Patent Publication Number: US-2018046031-A1

Title: Lighting device, display device, and television device

Description:
TECHNICAL FIELD 
     The present invention relates to a lighting device, a display device, and a television device. 
     BACKGROUND ART 
     A liquid crystal display device includes a liquid crystal panel and a lighting device (a backlight unit) for supplying light to the liquid crystal panel. An edge light type backlight unit (or a side light type backlight unit) has been known for such a backlight unit. In such a backlight unit, light emitting diodes (LEDs) are disposed along an end surface of a light guide plate. Such a backlight unit is disposed behind the liquid crystal panel to supply planar light to the back surface of the liquid crystal panel. 
     Recently, a lighting device including a wavelength converting member as an optical member that covers a light guide plate is present (e.g., Patent Document 1). The wavelength converting member is a phosphor sheet containing quantum dot phosphors. In such a lighting device, some of primary light rays emitted by LEDs (e.g., blue light rays) which reach the phosphor sheet excite the quantum dot phosphors in the phosphor sheet and the rest of the light rays pass through the phosphor sheet. When the quantum dot phosphors are excited by the primary light rays, the quantum dot phosphors emit secondary light rays with wavelengths different from those of the primary light rays (e.g., green light rays and red light rays). The secondary light rays exiting from the phosphor sheet are mixed with the primary light rays that pass through the film, resulting in emission of white light from the phosphor sheet. 
     An edge light type lighting device described in Patent Document 2 is present. The lighting device includes a wavelength converting member that is a phosphor tube including quantum dot phosphors dispersed in a resin and sealed in a tubular container made of glass. Such a lighting device has a configuration in which the phosphor tube is disposed between LEDs and an end surface (a light entering surface) of a light guide plate to which light enters. The phosphor tube is configured to convert primary light emitted by the LEDs (e.g., blue light) into secondary light (green light and red light) and to direct the secondary light to the light entering surface of the light guide plate. 
     A liquid crystal display device described in Patent Document 3 includes a liquid crystal panel and a direct type backlight unit configured to irradiate the liquid crystal panel with light. The direct type backlight unit includes a light source, a chassis, and a light reflection sheet. The chassis holds the light source therein. The light reflection sheet is configured to reflect light from the light source. The light reflection sheet includes a sheet bottom and sheet slopes. The sheet bottom extends along a front surface of a bottom plate of the chassis. The sheet slopes extend from edges of the sheet bottom at an angle of the sheet bottom. The light reflection sheet includes boundary portions along boundaries between the sheet bottom and the sheet slopes including the boundaries. The boundary portions have light reflectivity higher than that of adjacent portions adjacent to the boundary portions and away from the boundaries. The boundaries are cranked in a plan view. 
     RELATED ART DOCUMENT 
     Patent Document 
     Patent Document 1: Japanese Translation of PCT international Application Publication No. 2013-544018 
     Patent Document 2: Japanese Unexamined Patent Publication No. 2014-225379 
     Patent Document 3: Japanese Patent Publication No. 5292476 
     DISCLOSURE OF THE PRESENT INVENTION 
     Problem to be Solved by the Invention 
     In the edge light type lighting device using the phosphor sheet, an intensity of light is the highest around the LEDs. When primary light rays are directed to an end of the phosphor sheet near the LEDs, a large number of the primary light rays without the wavelength conversion exit from the end. For example, if a space is provided between the LEDs and the end surface (the light entering surface) of the light guide plate opposed to the LEDs, some of the light rays emitted by the LEDs (the primary light) do not enter the light guide plate and travel toward the end of the phosphor sheet through the space. A rate of such rays of the primary light is higher. If the end of the reflection sheet placed under the light guide plate is arranged near the LEDs, the light emitted by the LEDs (the primary light) may enter the light guide plate but some of the light rays may be reflected by the end of the reflection sheet to rise. The rays of the light pass through the light guide plate and travel to the end of the phosphor sheet. A rate of such rays of the primary light is higher. Namely, when the primary light is directed to the end of the phosphor sheet, light tinted with a color of the primary light (e.g., blue light) may be emitted from an end of the lighting device rather than a center portion. 
     In the edge light type lighting device including the phosphor tube, some of the light rays emitted by the LEDs (the primary light) do not pass through the quantum dot phosphors and pass only a wall of the tubular container which surrounds the quantum dot phosphors. The phosphor tube includes an elongated transparent portion on the front side of the lighting device and an elongated transparent portion on the rear side of the lighting device. The elongated portions include only the wall of the tubular container and do not include the quantum dot phosphors in the light emitting direction of the LEDs (the light axis direction). If the primary light is directed to the portion of the phosphor tube on the front side not including the quantum dot phosphors, the primary light rays are less likely to be converted to light rays with other wavelengths by the phosphor tube and the primary light rays exit through the end near the light entering surface of the light guide plate. If the primary light rays are directed to the portion of the phosphor tube on the rear side not including the quantum dot phosphors, the primary light rays are less likely to be converted to light rays with other wavelengths by the phosphor tube and are reflected by the end of the reflection sheet to rise. The primary light passes through the light guide plate and exits from the end near the light entering surface of the light guide plate without the conversion. In the edge light type lighting device including the phosphor tube, when the light without the wavelength conversion by the phosphor tube passing through the phosphor tube is directed to the end of the light guide plate, planar light exiting from an end of the lighting device is tinted a color of the primary light rays (e.g., blue light rays) more than light exiting from a center portion of the lighting device. 
     If the phosphor sheet described in the Patent Document 1 (a remote phosphor film) is used in the edge light type backlight device, the following problem may occur. The edge light type backlight includes a light source and a light guide plate that is configured to direct the light from the light source. The light guide plate includes a light entering end surface, a non-light-entering end surface, and a light exiting plate surface. The light from the light source directly enters the light entering end surface but the light from the light source do not directly enter the non-light-entering end surface. The light exits through the light exiting plate surface. Some of the light rays exiting through the light exiting plate surface of the light guide plate are not converted to light rays with other wavelengths. Such light rays may not be included in light exiting from a display backlight unit. Such light rays may be retroreflected and returned to the light guide plate and included in the light exiting from the display backlight unit. The number of reflection tends to be smaller in the peripheral portion of the display backlight unit than the center portion of the display backlight unit and thus the number of times that the retroreflected rays of light pass through the remote phosphor film. Namely, the retroreflected rays of light are less likely to be converted to light rays with other wavelengths. Furthermore, some of light rays traveling through the light guide plate may not exit through the light exiting plate surface and may exit through the non-light-exiting end surface of peripheral end surface of the light guide plate. Therefore, a color of light exiting from peripheral portion of the edge light type backlight unit tends to be different from a color of light exiting from a center portion of the backlight unit. 
     Furthermore, not only in the direct type backlight unit described in Patent Document 3 but also in the edge light type backlight unit, a gap is more likely to be present between components of the backlight unit in the peripheral portion. Therefore, light may leak through the gap. In a configuration including a light source configured to emit a single color of light and an optical member including a wavelength converting sheet, a large number of light rays in the single color of the light source may be included in the light leaking through the gap between the components in the peripheral portion. The optical member is configured to exert optical effects on the light from the light source. The wavelength converting sheet is configured to convert the light rays from the light source to light rays with other wavelengths. According to the configuration, in the peripheral portion of the backlight unit, the light tinted with a color similar to the single color of the light source may be observed. 
     One object of the present invention is to provide a technology for reducing unevenness in color in an edge light type lighting device including a wavelength converting member, especially, reducing unevenness in color caused by exiting light more tinted with primary light from a light source in an end than in a center portion. 
     First Means for Solving the Problem 
     A lighting device according to the present invention includes a light source, a light guide plate, a wavelength converting member, and a complementary color member. The light source is configured to emit primary light rays in a predefined wavelength range. The light guide plate includes a light entering surface, a light exiting surface, and an opposite surface. The primary light rays enter the light guide plate through the light entering surface and exit through the light exiting surface. The opposite surface is on a side opposite from the light exiting surface. The wavelength converting member contains phosphors that are configured to emit secondary light rays in a wavelength range different from the wavelength range of the primary light rays when excited by the primary light rays. The wavelength converting member is configured to pass some of the primary light rays. The complementary color member is disposed to cover a space between the light source and a light entering end of the light guide plate that includes the light entering surface at least from a light exiting surface side or the light entering end at least from an opposite surface side. The complementary color member exhibits a color that makes a complementary color pair with a reference color that is exhibited by the primary light rays. Because the lighting device have such a configuration, color unevenness such that an end is tinted a color of the primary light rays from the light source more than a center portion can be reduced. 
     The following configurations are preferable embodiments of the first means. 
     The lighting device may further include a frame that is held against a peripheral portion of the light guide plate including the light entering end from the light exiting surface side to cover the light source and the light entering end from the light entering surface side. The complementary color portion may be disposed on a surface of the frame facing the light entering surface. 
     In the lighting device, the complementary color member may be formed across the space between the light source and the light entering end. 
     In the lighting device, the frame may be white in color. 
     The lighting device may further include a reflection member that is disposed to cover the opposite surface and configured to reflect light rays including the primary light rays. The complementary color member may be disposed at least on an end of the reflection member on a light source side. 
     In the lighting device, the reflection member may include a reflection body and a reflection extended portion. The reflection body may overlap the opposite surface. The reflection extended portion may extend from the reflection body to the light source side and project outer than the opposite surface. The complementary color member may be disposed over an entire area of the reflection extended portion and an end of the reflection bod on the light source side. 
     In the lighting device, the reflection member may be white in color. 
     In the lighting device, the light guide plate may include a light source non-opposed surface that is not opposed to the light source. The lighting device may further include an opposed member that is opposed to the light source non-opposed surface. The lighting device may further include a second complementary color member that is disposed to cover a second space formed between the opposed member and a light source non-opposed end of the light guide plate including the light source non-opposed surface at least from the light exiting surface side or to cover the light source non-opposed end at least from the opposite surface side. The second complementary color member may exhibit a color that makes a complementary color pair with a reference color that is exhibited by the primary light rays. 
     In the lighting device, the light source non-opposed surface may include an opposite-side light source non-opposed surface on a side opposite from the light entering surface. 
     In the lighting device, the primary light rays from the light source may be blue light rays. The wavelength converting member may contain at least one of green phosphors, red phosphors, and yellow phosphors. The green phosphors may be configured to emit green light rays as the secondary light rays when excited by the blue light rays, which are the primary light rays. The red phosphors may be configured to emit red light rays as the secondary light rays when excited by the blue light, which are the primary light rays. The yellow phosphors may be configured to emit yellow light rays as the secondary light rays when excited by the blue light rays, which are the primary light rays. The complementary color member may exhibit yellow. 
     In the lighting device, the wavelength converting member may be disposed to cover the light exiting surface. In the lighting device, the primary light rays emitted by the light source may enter the light guide plate through the light entering surface and transmit through the light guide plate. The primary light rays may be reflected by the reflection member while transmitting through the light guide plate. The primary light rays may exit the light guide plate through the light exiting surface. The light rays that have exited through the light exiting surface may converted to light rays with other wavelengths by the phosphors contained in the wavelength converting member. The wavelength converting member may emit secondary light rays obtained through the wavelength conversion. Some of the light rays that have exited through the light exiting surface pass through the wavelength converting member without the wavelength conversion. If a gap is created between an end of the light guide plate including the light entering surface and the reflection member, the light rays passing through the gap may be reflected by the reflection member. The reflected light rays may exit toward the wavelength converting member without totally reflected by the light exiting surface. Furthermore, some of the light rays emitted by the light source may travel toward the wavelength converting member without entering the light guide plate through the light entering surface. In any of the above cases, the light rays passing through an edge portion of the wavelength converting member closer to the light source tends to include a higher percentage of the light rays that are not the light rays with other wavelengths obtained through the wavelength conversion by the phosphors. Therefore, a color of the light rays that have passed through the edge portion of the wavelength converting member may be different from a color of the light rays that have passed through a center portion of the wavelength converting member. The complementary color member may be disposed over the light source and the end of the light guide plate including the light entering surface at least one of the light exiting surface side and the opposite plate surface side. The complementary color member may exhibit the color that makes the complementary color pair with the color of the light rays from the light source. According to the configuration, the light rays from the light source may be reduced by the complementary color member to a certain extent and become whitish. Even if leak of light occur, the color of the primary light rays included in the leak is faded to make an overall color of the leak of light whitish. Therefore, a difference in color between the light rays that have passed through the end portion of the wavelength converting member closer to the light source and the light rays that have passed through the center portion of the wavelength converting member is less likely to occur. Namely, the color unevenness can be reduced. 
     In the lighting device, the wavelength converting member may include a wavelength converting portion and an elongated holding portion. The wavelength converting portion may contain the phosphors. The holding portion may surround and hold the wavelength converting portion. The holding portion may have light transmissivity. The wavelength converting member may be disposed between the light source and the light entering surface. 
     Second Means for Solving the Problem 
     A lighting device according to the present invention includes, as a different embodiment, a light source, a light guide plate, a plate surface wavelength converting member, an end surface wavelength converting member, and an end surface reflection member. The light guide plate includes a light entering end surface, a non-light-entering end surface, and a light exiting plate surface. Light rays from the light source enter the light guide plate through the light entering end surface and exit the light guide plate through the light exiting plate surface. The light entering end surface is at least one of peripheral surfaces of the light guide plate. The light rays from the light source do not directly enter the light guide plate through the non-light-entering surface. The non-light-entering end surface is one of the peripheral surfaces of the light guide plate excluding the light entering end surface. The light exiting plate surface is one of the plate surfaces. The plate surface wavelength converting member overlaps the light exiting plate surface of the light guide plate. The plate surface wavelength converting member contains phosphors that are configured to convert the light rays from the light source to light rays with other wavelengths. The end surface wavelength converting member overlaps at least a portion of the non-light-entering end surface of the light guide plate. The end surface wavelength converting member contains phosphors that are configured to convert the light rays from the light source to light rays with other wavelengths. The end surface reflection member is disposed on a side opposite from a non-light-entering end surface side relative to the end surface wavelength converting member to overlap the end surface wavelength converting member. The end surface reflection member is configured to reflect light rays that have passed through the end surface wavelength converting member. 
     According to the configuration, the light rays emitted by the light source enter the light guide plate through the light entering end surface of the peripheral surfaces, transmit through the light guide plate, and exit the light guide plate through the light exiting plate surface. The light rays that have exited through the light exiting plate surface are converted to the light rays with other wavelengths by the phosphors contained in the plate surface wavelength converting member that is placed over the light exit plate surface. Some of the light rays that have exited the light guide plate through the light exiting plate surface may not be converted to the light rays with other wavelengths by the plate surface wavelength converting member and included in emitting light from the lighting device. The light rays may be retroreflected and returned to the light guide plate and then included in the emitting light from the lighting device. The number of times of reflection tends to be smaller in the peripheral portion of the lighting device in comparison to the center portion of the lighting device. Therefore, the retroreflected light rays pass through the plate surface wavelength converting member for the smaller number of times and thus the retroreflected light rays are less likely to be converted to light rays with other wavelengths. Some of the light rays transmitting through the light guide plate do not exit the light guide plate through the light exiting plate surface. Some of the light rays may exit the light guide plate through the non-light-entering end surface of the peripheral surfaces of the light guide plate. 
     The end surface wavelength converting member is placed over at least one of the non-light-entering surface of the light guide plate. Therefore, the light rays in the peripheral portion of the light guide plate and exiting the light guide plate through the non-light-entering end surface are converted to the light rays with other wavelengths by the phosphors in the end surface wavelength converting member. Furthermore, the light rays that have passed through the end surface wavelength converting member are reflected by the end surface reflection member that is disposed on the side opposite from the non-light-entering end surface side relative to the end surface wavelength converting member. The light rays are returned to the end surface wavelength converting member and enter the light guide plate through the non-light-entering end surface and exit the light guide plate through the light exiting plate surface. The light rays in the peripheral portion of the light guide plate may be reflected for the smaller number of times during the retroreflection. However, the light rays are properly converted to light rays with other wavelengths by the end surface wavelength converting member after exited through the non-light-entering end surface and returned by the end surface reflection member so that the light rays do not exit from the non-light-entering end surface to the outside. According to the configuration, a difference in color of exiting light between the center portion of the lighting device and the peripheral portion of the lighting device is less likely to occur. The color unevenness can be reduced and the high light use efficiency can be achieved. 
     The following configurations are preferable embodiments of the second means. 
     The light guide plate may include a non-light-entering lateral end surface that may be one of the peripheral surfaces adjacent to the light entering end surface. The end surface wavelength converting member may overlap at least the non-light-entering lateral end surface. The end surface reflection member may overlap the end surface wavelength converting member on a side opposite from a non-light-entering lateral end surface side. More light rays among the light rays emitted by the light source, entering the light guide plate through the light entering end surface, and transmitting through the light guide plate may exit the light guide plate through the non-non-light-entering lateral end surface of the peripheral surfaces of the light guide plate adjacent to the non-light-entering lateral end surface. Because the end surface wavelength converting member is over at least the non-non-light-entering lateral end surface, the light rays that have emitted through the non-light-entering lateral end surface are efficiently converted to the light rays with other wavelengths by the end surface wavelength converting member. Furthermore, the end surface reflection member is over at least the end surface wavelength converting member on the side opposite from the non-light-entering lateral end surface side. Therefore, the light rays exiting through the non-light-entering lateral end surface can be reflected by the end surface reflection member and returned to the light guide plate. According to the configuration, the color unevenness is properly reduced and the high light use efficiency can be achieved. 
     The light guide plate may include a non-light-entering opposite end surface that may be one of the peripheral surfaces on a side opposite from the light entering end surface. The end surface wavelength converting member may overlap at least the non-light-entering opposite end surface. The end surface reflection member may overlap the end surface wavelength converting member on the side opposite from the non-light-entering end surface side. More light rays among the light rays emitted by the light source, entering the light guide plate through the light entering end surface, and transmitting through the light guide plate may exit the light guide plate through the non-non-light-entering opposite end surface of the peripheral surfaces of the light guide plate on the side opposite from the light entering end surface. Because the end surface wavelength converting member is over at least the non-non-light-entering opposite end surface, the light rays that have emitted through the non-light-entering opposite end surface are efficiently converted to the light rays with other wavelengths by the end surface wavelength converting member. Furthermore, the end surface reflection member is over at least the end surface wavelength converting member on the side opposite from the non-light-entering opposite end surface side. Therefore, the light rays exiting through the non-light-entering opposite end surface can be reflected by the end surface reflection member and returned to the light guide plate. According to the configuration, the color unevenness is properly reduced and the high light use efficiency can be achieved. 
     The end surface wavelength converting member may cover an entire area of the non-light-entering end surface of the light guide plate. The end surface reflection member may be disposed on a side opposite from the non-light-entering end surface side relative to an entire area of the end surface wavelength converting member to cover the entire area of the end surface wavelength converting member. More light rays among the light rays emitted by the light source, entering the light guide plate through the light entering end surface, and transmitting through the light guide plate may exit the light guide plate through the non-non-light-entering end surface of the peripheral surfaces of the light guide plate on the side opposite from the light entering end surface. Because the end surface wavelength converting member is over the entire area of the non-non-light-entering end surface, the light rays that have emitted through the non-light-entering end surface are efficiently converted to the light rays with other wavelengths by the end surface wavelength converting member. Furthermore, the end surface reflection member is over the entire area of the end surface wavelength converting member on the side opposite from the non-light-entering end surface side. Therefore, the light rays exiting through the non-light-entering end surface can be reflected by the end surface reflection member and returned to the light guide plate. According to the configuration, the color unevenness is properly reduced and the high light use efficiency can be achieved. 
     The lighting device may further include a plate surface reflection member opposed to an opposite plate surface on a side opposite from the light exiting plate surface of the light guide plate and configured to reflect light rays. According to the configuration, light rays traveling from a light exiting plate surface side to an opposite plate surface side during the transmission through the light guide plate may be reflected by the plate surface reflection member to the light exiting plate surface side. Therefore, efficiency in transmission of the light rays improves. 
     The end surface reflection member may be integrally formed with the plate surface reflection member. According to the configuration, the end surface reflection member and the plate surface reflection member are provided as a single component. Therefore, the number of components can be reduced. Furthermore, a gap is less likely to be created between the end surface reflection member and the plate surface reflection member. Therefore, the leak of light from the light guide plate is further less likely to occur. 
     The end surface wavelength converting member may be integrally formed with the non-light-entering end surface of the light guide plate. According to the configuration, an interface such as an air layer is less likely to be created between the non-light-entering end surface of the light guide plate and the end surface wavelength converting member. The light rays that have emitted through the non-light-entering end surface are less likely to be improperly refracted before reaching the end surface wavelength converting member. Therefore, the light rays that have exited the light guide plate through the non-light-entering end surface more properly pass through the end surface wavelength converting member. The wavelength converting efficiency further improves. This configuration is preferable for reducing the color unevenness. 
     The end surface wavelength converting member may be applied to a surface of the non-light-entering end surface of the light guide plate. According to the configuration, the end surface wavelength converting member is integrated with the non-light-entering end surface of the light guide plate without an interface such as an air layer. 
     The end surface wavelength converting member may be integrally formed with the end surface reflection member. According to the configuration, an interface such as an air layer is less likely to be crated between the end surface wavelength converting member. The light rays that have transmitted through the end surface wavelength converting member are less likely to be improperly refracted before reaching the end surface reflection member. Therefore, the light rays that have transmitted through the end surface wavelength converting member are more properly reflected by the end surface reflection member. The light use efficiency further improves. 
     The end surface wavelength converting member may be applied to a surface of the end surface reflection member. According to the configuration, the end surface wavelength converting member is integrated with the end surface reflection member without an interface such as an air layer. In comparison to a configuration in which the end surface wavelength converting member is applied to the non-light-entering end surface of the light guide plate and provided integrally with the non-light-entering end surface, the end surface wavelength converting member can be more easily provided. 
     The plate surface wavelength converting member and the end surface wavelength converting member may contain quantum dot phosphors as the phosphors. According to the configuration, the efficiency in the wavelength conversion by the plate surface wavelength converting member and the end surface wavelength converting member improves. Furthermore, the light rays obtained through the wavelength conversion have high purity. 
     Third Means for Solving the Problem 
     A lighting device according to the present invention includes, as a different embodiment, a light source, a light guide plate, a reflection member, a wavelength converting member, and a first complementary color member. The light source is configured to emit primary light rays in a predefined wavelength range. The light guide plate includes a light entering surface, a light exiting surface, and an opposite surface. The light entering surface through which the primary light rays from the light source enter the light guide plate is opposed to the light source. The primary light rays entering through the light entering surface exit through the light exiting surface. The opposite surface is on a side opposite from the light exiting surface. The reflection member is disposed to cover the opposite surface and configured to reflect light rays. The wavelength converting member contains phosphors that are configured to emit secondary light rays in a wavelength range different from the wavelength range of the primary light rays when excited by the primary light rays. The wavelength converting member is disposed to cover the light exiting surface and configured to pass some of the primary light rays and to emit planar light. The first complementary color member is disposed between the opposite surface and the reflection member to cover an end of the light guide plate. The first complementary color member exhibits a color that makes a complementary color pair with a reference color exhibited by the primary color rays. 
     According to the above configuration, in the lighting device, a percentage of the light rays in a color that makes a complementary color pair with the reference color the is exhibited by the primary light rays can be increased and a percentage of the primary light rays can be reduced. Therefore, in the lighting device, the light rays included in the planar light emitted by the wavelength converting member in the peripheral portion is less likely to be tinted the color of the primary light rays more than the center portion. 
     The following configurations are preferable embodiments of the third means. 
     The first complementary color member may be disposed on a light source non-opposed end that is one of ends of the light guide plate other than a light entering end of the light guide plate including the light entering surface. 
     In the lighting device, the light source non-opposed end may include a light source non-opposed adjacent end that includes an adjacent end surface that is adjacent to the light entering surface. 
     In the lighting device, the first complementary color member may have light transmissivity and contain phosphors that are configured to emit the secondary light rays when excited by the primary light rays. With the first complementary color member, the primary light rays are efficiently converted to the secondary light. The percentage of the light rays that exhibit a color that makes a complementary color pair with the reference color exhibited by the primary light rays can be increased and the percentage of the primary light rays can be reduced. 
     In the lighting device, the first complementary color member may have light transmissivity. The first complementary color member may be configured to selectively absorb the primary light rays. With the first complementary color member, the primary light rays can be selectively absorbed and thus the percentage of the light rays that exhibit a color that makes a complementary color pair with the reference color exhibited by the primary light rays can be increased and the percentage of the primary light rays can be reduced. 
     In the lighting device, the primary light rays from the light source may be blue light rays. The wavelength converting member may contain at least green phosphors and red phosphors as the phosphors. The green phosphors may be configured to emit green light rays as the secondary light rays when excited by the blue light rays that are the primary light rays. The red phosphors may be configured to emit red light rays as the secondary light rays when excited by the blue light rays that are the primary light rays. The first complementary color member may exhibit yellow. 
     The lighting device may include a light source, a light guide plate, a wavelength converting member, and a second complementary color member. The light source may be configured to emit primary light rays in a predefined wavelength range. The light guide plate may include a light entering surface, a light exiting surface, and an opposite surface. The light entering surface through which the primary light rays from the light source enter may be opposed to the light source. The primary light rays that have entered through the light entering surface may exit through the light exiting surface. The opposite surface may be on a side opposite from the light exiting surface. The wavelength converting member may contain phosphors that are configured to emit secondary light rays in a wavelength range different from the wavelength range of the primary light rays when excited by the primary light rays. The wavelength converting member may be disposed to cover the light exiting surface and configured to pass some of the primary light rays and to emit planar light. The second complementary color member may be disposed between the opposite surface and the reflection member to cover an end of the light guide plate. The second complementary color member may exhibit a color that makes a complementary color pair with a reference color that is exhibited by the primary color rays. 
     According to the configuration, in the light exiting surface at the end of the light guide plate in the lighting device, a percentage of the light rays in a color that makes a complementary color pair with the reference color that is exhibited by the primary light rays can be increased and a percentage of the primary light rays can be reduced. Therefore, in the lighting device, the light rays included in the planar light emitted by the wavelength converting member in the peripheral portion is less likely to be tinted the color of the primary light rays more than the center portion. 
     The second complementary color member may be disposed on a light source non-opposed end among ends of the light guide plate other than a light entering end of the light guide plate that includes the light entering surface. 
     The light source non-opposed end may include a light source non-opposed adjacent end that may include an adjacent end surface that is adjacent to the light entering surface. 
     In the lighting device, the second complementary light member may have light transmissivity. The second complementary light member may contain phosphors that are configured to emit the secondary light rays when excited by the primary light rays. With the second complementary color member, the primary light rays can be efficiently converted to the secondary light rays. Therefore, a percentage of the light rays in a color that makes a complementary color pair with the reference color that is exhibited by the primary light rays can be increased and a percentage of the primary light rays can be reduced. 
     In the lighting device, the second complementary color member may have light transmissivity. The second complementary color member may be configured to selectively absorb the primary light rays. With the second complementary color member, the primary light rays can be selectively absorbed. Therefore, a percentage of the light rays in a color that makes a complementary color pair with the reference color that is exhibited by the primary light rays can be increased and a percentage of the primary light rays can be reduced. 
     In the lighting device, the primary light rays from the light source may be blue light rays. The wavelength converting member may contain at least green phosphors and red phosphors as the phosphors. The green phosphors may be configured to emit green light rays as the secondary light rays when excited by the blue light rays that are the primary light rays. The red phosphors may be configured to emit red light rays as the secondary light rays when excited by the blue light rays that are the primary light rays. The second complementary color member may exhibit yellow. 
     Fourth Means for Solving the Problem 
     A lighting device according to the present invention includes, as a different embodiment, a light source, a chassis, a wavelength converting member, and a retroreflector. The chassis holds the light source and includes a light exiting portion having an opening on a light exiting side to open toward an outside. The wavelength converting member is disposed to cover the light exiting portion and contains phosphors for converting light rays from the light source to light rays with other wavelengths. The retroreflector is disposed to at least partially overlap a peripheral portion of the wavelength converting member but not a center portion of the wavelength converting member when the wavelength converting member is sectioned into the center portion and the peripheral portion. The retroreflector is configured to retroreflect some of the light rays to a side opposite from the light exiting side. 
     According to the configuration, the light rays emitted by the light source are converted to light rays with other wavelengths by the phosphors contained in the wavelength converting member disposed to cover the light exiting portion of the chassis that holds the light source. The light exiting portion of the chassis opens toward the outside. In the peripheral portion of the lighting device, a gap is more likely to be created between components of the lighting device. Light may leak through the gap. The retroreflector is disposed to at least partially overlap the peripheral portion of the wavelength converting member although the retroreflector does not overlap the center portion of the wavelength converting member. Therefore, some of the light rays in the peripheral portion can be retroreflected to the side opposite from the light exiting side by the retroreflector. The light rays that are retroreflected to the side opposite from the light exiting side are more likely to pass through the wavelength converting member and more likely to be converted to light rays with other wavelengths. Therefore, even if the light leaks through the gap, emitting light from the peripheral portion of the lighting device is less likely to be tinted a color similar to the color of the light rays from the light source and thus the color unevenness can be reduced. 
     The following configurations are preferable embodiments of the fourth means. 
     The retroreflector may be disposed to overlap the wavelength converting member on the light exiting side. According to the configuration, the light rays that have passed through the wavelength converting member and have been retroreflected by the retroreflector pass through the wavelength converting member immediately after the retroreflection. Therefore, the light rays pass through the wavelength converting member for the larger number of times and thus the wavelength conversion are actively performed. This configuration is preferable for reducing the color unevenness. 
     The lighting device may further include a positioning portion for positioning the wavelength converting member and the retroreflector. The wavelength converting member may include a first mating positioning portion that contact the positioning portion. The retroreflector may include a second mating positioning portion that is disposed to correspond with the first mating portion and to contact the positioning portion. According to the configuration, the wavelength converting member and the retroreflector are positioned by the first mating positioning portion and the second mating positioning portion that contact the common positioning portion. High accuracy is achieved in positioning of the retroreflector relative to the wavelength converting member and the structures are simplified. 
     The retroreflector may contain light scattering particles for reflecting and scattering light rays. By reflecting and scattering the light rays in the peripheral portion of the wavelength converting member by the light scattering particles contained in the retroreflector, some of the light rays are retroreflected to the side opposite from the light exiting side. According to the configuration, the color unevenness resulting from leak of light through a gap between components of the lighting device can be properly reduced. The light scattering particles are less likely to absorb the light rays and retroreflect some of the light rays to the side opposite from the light exiting side. Therefore, high light use efficiency can be achieved and chronological deterioration in performance is less likely to occur. 
     The retroreflector may include a refractive optical component for refracting light rays. The light rays in the peripheral portion of the wavelength converting member can be refracted by the refractive optical component in the retroreflector and some of the light rays can be retroreflected to the side opposite from the light exiting side. According to the configuration, the color unevenness resulting from leak of light trough a gap between components of the lighting device can be properly reduced. Furthermore, the refractive optical component refracts the light rays without absorbing and retroreflects some of the light rays to the side opposite from the light exiting side. Therefore, high light use efficiency can be achieved and chronological deterioration in performance is less likely to occur. 
     The lighting device may further include a light guide plate that is disposed on a side opposite from the light exiting side relative to the wavelength converting member. The light guide plate may include a light entering end surface and a light exiting plate surface. The light entering end surface may be one of end surfaces of the light guide plate through which the light rays from the light source enter. The light exiting plate surface may be one of plate surfaces of the light guide plate through which light rays exit. The light rays emitted by the light source enter the light guide plate through the light entering end surface, transmit through the light guide plate, and exit through the light exiting plate surface. Because the wavelength converting member is disposed on the light exiting side relative to the light guide plate, the light rays that have emitted through the light exiting plate surface are converted to light rays with other wavelengths by the phosphors contained in the wavelength converting member. According to the edge light type lighting device, in comparison to a direct type lighting device including multiple light sources, the number of light sources can be reduced and sufficiently high evenness can achieved in brightness of emitting light. 
     The lighting device may include a frame that supports an outer edge portion of the light guide plate from the light exiting side. The retroreflector may include a portion that overlaps the frame and a portion that is disposed inner than an inner edge of the frame. The outer edge portion of the light guide plate may be supported by the frame from the light exiting side. The retroreflector may include the portion that overlaps the frame and the portion that is disposed inner than the inner edge of the frame. Therefore, some of the light rays inner than the inner edge of the frame can be retroreflected to the side opposite from the light exiting side by the retroreflector. The light rays around the peripheral portion of the wavelength converting member can be efficiently retroreflected. The color unevenness resulting from leak of light through a gap between the frame and the light guide plate or a gap between the frame and the wavelength converting member can be properly reduced. 
     The end surfaces of the light guide plate excluding the light entering end surface may be configured as non-light-entering end surfaces through which the light rays from the light source do not directly enter. The retroreflector may be disposed to overlap at least sections of the peripheral portion of the wavelength converting member parallel to the non-light-entering end surfaces. The light rays emitted by the light source, entering the light guide plate through the light entering end surface, and transmitting through the light guide plate tend to exit the light guide plate through the non-light-entering end surfaces among the end surfaces excluding the light entering end surface. Such light rays may leak through a gap that is created between components of the lighting device. Because the retroreflector is disposed to overlap at least the sections of the peripheral portion of the wavelength converting member parallel to the non-light-entering end surfaces, the retroreflector can retroreflect some of the light rays at least around the sections of the peripheral portion of the wavelength converting member parallel to the non-light-entering end surfaces to the side opposite from the light exiting side. Therefore, the color evenness resulting from the leak of light that includes the light rays exiting the light guide plate through the non-light-entering end surfaces thought the gap can be properly reduced. 
     The chassis may include a bottom that is disposed on a side opposite from a light emitting surface side of the light source. The lighting device may further include a reflection member that is configured to reflect light rays from the light source. The reflection member may include at least a bottom-side reflecting portion and a projected reflecting portion. The bottom-side reflecting portion may be disposed along the bottom. The projected reflecting portion may project from the bottom-side reflecting portion to the light exiting side. The wavelength converting member may be disposed opposite and away from the light emitting surface of the light source on the light exiting side. The retroreflector may be disposed outer than an outer edge or the projected reflecting portion not to overlap the projected reflecting portion. According to the configuration, the light rays emitted by the light source that is held in the chassis may be reflected by the bottom-side reflecting portion and the projected reflecting portion of the reflection member and converted to light rays with other wavelengths by the phosphors contained in the wavelength converting member that is disposed opposite and away from the light emitting surface of the light source. Then, the light rays may exit from the lighting device. According to such a direct type lighting device, the light rays emitted by the light source exit without passing through the components such as a light guide plate included in the edge light type lighting device. Therefore, high light use efficiency can be achieved. 
     The retroreflector may be disposed outer than the outer edge of the projected reflecting portion not to overlap the projected reflecting portion. Some of the light rays that have passed through the wavelength converting member may not be included in light exiting from the lighting device. Some of the light rays may be retroreflected and returned to the reflection member and then included in the light exiting from the lighting device. The light lays tend to be retroreflected for the larger number of times in the peripheral portion of the reflection member in which the projected reflecting portions are disposed than in the center portion in which the bottom-side reflecting portion of the reflection member is disposed. The retroreflected light rays in the peripheral portion pass through the wavelength converting member for the larger number of times. Namely, the retroreflected light rays in the peripheral portion are more likely to be converted to the light rays with other wavelengths. The retroreflector may be disposed outer than the outer edges of the projected reflecting portion not to overlap the projected reflecting portion. Therefore, the light rays reflected by the projected reflecting portion are less likely to be retroreflected for the excessive number of times. 
     The retroreflector may be disposed to overlap the peripheral portion of the wavelength converting member for an entire periphery. According to the configuration, some of the light rays in the peripheral portion of the wavelength converting member can be retroreflected to the side opposite from the light exiting side by the retroreflector for the entire periphery. Therefore, the color unevenness resulting from the leak of light through a gap between components of the lighting device can be reduced regardless of a position of the gap with respect to the peripheral direction. 
     The light source may be configured to emit blue light rays. The wavelength converting member may contain at least either a combination of green phosphors an red phosphors or yellow phosphors as the phosphors. The green phosphors may be configured to convert the blue light rays to green light rays through wavelength conversion. The red phosphors may be configured to convert the blue light rays to red light rays through wavelength conversion. The yellow phosphors may be configured to convert the blue light rays to yellow light rays through wavelength conversion. The blue light rays emitted by the light source are converted to the green light rays and the red light rays if the green phosphors and the red phosphors are contained in the wavelength converting member. The blue light rays emitted by the light source are converted to the yellow light rays if the yellow phosphors are contained in the wavelength converting member. If a gap is created between components of the lighting device in the peripheral portion, the blue light rays may leak through the gap without the wavelength conversion. The exiting light rays from the peripheral portion of the lighting device may become more bluish in comparison to exiting light rays from the center portion of the lighting device. The retroreflector can retroreflect some of the light rays around the peripheral portion of the wavelength converting member to the side opposite from the light exiting side. The retroreflected light rays pass through the wavelength converting member again and thus the wavelength conversion is actively performed. Therefore, even if the light rays leak through the gap, the exiting light from the peripheral portion of the lighting device is less likely to become bluish and thus the color unevenness can be reduced. 
     The wavelength converting member may contain quantum dot phosphors as the phosphors. According to the configuration, higher efficiency can be achieved in the wavelength converting by the wavelength converting member. Furthermore, the light rays obtained through the wavelength conversion have high color purity. 
     A display device according to the present invention includes the lighting device according to any one of the first to the fourth means and a display panel that is configured to display an image using light from the lighting device. 
     The display panel may be a liquid crystal panel. 
     A television device according to the present invention includes the above display device. 
     Advantageous Effect of the Invention 
     According to the present invention, technologies for reducing color unevenness in an edge light type lighting device including a wavelength converting member are provided. Especially, technologies for reducing color unevenness in exiting light including light rays that are tinted a color of primary light rays from a light source more at an end than in a center portion are provided. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view illustrating a general configuration of a television device according to a first embodiment of the present invention. 
         FIG. 2  is a cross-sectional view along line A-A in  FIG. 1 . 
         FIG. 3  is a plan view schematically illustrating positional relationships of a complementary color member, a light guide plate, and LEDs with one another. 
         FIG. 4  is a magnified cross-sectional view illustrating a light entering surface and therearound illustrated in  FIG. 2 . 
         FIG. 5  is a cross-sectional view of a liquid crystal display device according to a second embodiment along a longitudinal direction thereof. 
         FIG. 6  is a magnified cross-sectional view illustrating a light entering surface and therearound illustrated in  FIG. 6 . 
         FIG. 7  is a plan view schematically illustrating positional relationships of complementary color members, a light guide plate, a reflection sheet, and LEDs with one another. 
         FIG. 8  is a magnified cross-sectional view illustrating a light entering surface and therearound illustrated in FIG.  6 . 
         FIG. 9  is a magnified cross-sectional view illustrating an opposite-side light source non-opposed surface and therearound illustrated in  FIG. 6 . 
         FIG. 10  is a partial plan view schematically illustrating a lighting unit according to a third embodiment. 
         FIG. 11  is a magnified cross-sectional view illustrating a light entering surface and therearound in a liquid crystal display device according to the third embodiment. 
         FIG. 12  is a magnified cross-sectional view illustrating a light entering surface and therearound in a liquid crystal display device according to a fourth embodiment. 
         FIG. 13  is a magnified cross-sectional view illustrating a light entering surface and therearound in a liquid crystal display device according to a fifth embodiment. 
         FIG. 14  is a front view of a holder. 
         FIG. 15  is a magnified cross-sectional view illustrating a light entering surface and therearound in a liquid crystal display device according to a sixth embodiment. 
         FIG. 16  is an exploded perspective view illustrating a schematic configuration of a liquid crystal display device according to a seventh embodiment. 
         FIG. 17  is a plan view of a backlight unit included in the liquid crystal display device. 
         FIG. 18  is a cross-sectional view along line iv-iv in FIG.  17 . 
         FIG. 19  is a cross-sectional view along line v-v in  FIG. 17 . 
         FIG. 20  is a cross-sectional view of a plate surface wavelength converting sheet or an end surface wavelength converting sheet. 
         FIG. 21  is a magnified cross-sectional view illustrating a non-light-entering opposite end surface and therearound of a light guide plate. 
         FIG. 22  is a magnified cross-sectional view illustrating a non-light-entering opposite end surface and therearound of a light guide plate according to an eighth embodiment. 
         FIG. 23  is a magnified cross-sectional view illustrating a non-light-entering opposite end surface and therearound of a light guide plate according to a ninth embodiment. 
         FIG. 24  is a magnified cross-sectional view illustrating a non-light-entering opposite end surface and therearound of a light guide plate according to a tenth embodiment. 
         FIG. 25  is a magnified cross-sectional view illustrating a non-light-entering opposite end surface and therearound of a light guide plate according to an eleventh embodiment. 
         FIG. 26  is a plan view of a backlight unit according to a twelfth embodiment. 
         FIG. 27  is a plan view of a backlight unit according to a thirteenth embodiment. 
         FIG. 28  is a plan view of a backlight unit according to a fourteenth embodiment. 
         FIG. 29  is a plan view of a backlight unit according to a fifteenth embodiment. 
         FIG. 30  is a plan view of a backlight unit according to a sixteenth embodiment. 
         FIG. 31  is a plan view of a backlight unit according to a seventeenth embodiment. 
         FIG. 32  is a plan view of a backlight unit according to an eighteenth embodiment. 
         FIG. 33  is a cross-sectional view illustrating a schematic configuration of a liquid crystal display device according to a nineteenth embodiment. 
         FIG. 34  is a magnified cross-sectional view illustrating an LED and therearound. 
         FIG. 35  is a plan view schematically illustrating positional relationships of a light guide plate with LEDs viewed from the front surface side. 
         FIG. 36  is a plan view schematically illustrating positional relationships of the light guide plate with the LEDs viewed from the back surface side. 
         FIG. 37  is a plan view schematically illustrating positional relationships of the LEDs, the light guide plate, complementary color members, and a reflection sheet with one another viewed from the front surface side. 
         FIG. 38  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end and therearound of a liquid crystal display device. 
         FIG. 39  is an explanatory drawing illustrating positional relationships of LEDs, a light guide plate, a complementary color member, and a reflection sheet with one another in a lighting unit according to a twentieth embodiment. 
         FIG. 40  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end and therearound of a liquid crystal display device according to the twenty-first embodiment. 
         FIG. 41  is an explanatory drawing illustrating positional relationships of LEDs, a light guide plate, a complementary color member, and a reflection sheet with one another in a lighting unit according to a twenty-second embodiment. 
         FIG. 42  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end and therearound of a liquid crystal display device according to the twenty-second embodiment. 
         FIG. 43  is an explanatory drawing illustrating positional relationships of LEDs, a light guide plate, a complementary color member, and a reflection sheet with one another in a lighting unit according to a twenty-third embodiment. 
         FIG. 44  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end and therearound of a liquid crystal display device of a twenty-fourth embodiment. 
         FIG. 45  is an exploded perspective view illustrating a schematic configuration of a liquid crystal display device according to a twenty-fifth embodiment. 
         FIG. 46  is a plan view illustrating a chassis, an LED board, and a light guide plate of a backlight unit in the liquid crystal display device. 
         FIG. 47  is a cross-sectional view illustrating a cross-sectional configuration of the liquid crystal display device along a transverse direction of the liquid crystal display device. 
         FIG. 48  is a cross-sectional view illustrating a cross-sectional configuration of the liquid crystal display device along a longitudinal direction of the liquid crystal display device. 
         FIG. 49  is a cross-sectional view illustrating an LED and an LED board. 
         FIG. 50  is a cross-sectional view of a wavelength converting sheet. 
         FIG. 51  is a plan view illustrating the wavelength converting sheet and a retroreflector mounted to a frame. 
         FIG. 52  is a plan view of the retroreflector. 
         FIG. 53  is a plan view of the frame. 
         FIG. 54  is a plan view of the wavelength converting sheet. 
         FIG. 55  is a cross-sectional view of the wavelength converting sheet. 
         FIG. 56  is an exploded perspective view illustrating a schematic configuration of a liquid crystal display device according to a twenty-sixth embodiment of the present invention. 
         FIG. 57  is a plan view of a backlight unit. 
         FIG. 58  is a cross-sectional view illustrating a cross-sectional configuration of the liquid crystal display device along a longitudinal direction of the liquid crystal display device. 
         FIG. 59  is a cross-sectional view illustrating a cross-sectional configuration of the liquid crystal display device along a transverse direction of the liquid crystal display device. 
         FIG. 60  is a cross-sectional view illustrating a cross-sectional configuration of an end of the liquid crystal display device along the longitudinal direction. 
         FIG. 61  is a cross-sectional view illustrating a cross-sectional configuration of an end of the liquid crystal display device along the transverse direction. 
         FIG. 62  is a cross-sectional view of a retroreflector according to a twenty-seventh embodiment of the present invention. 
         FIG. 63  is a cross-sectional view of a retroreflector according to a twenty-eighth embodiment of the present invention. 
         FIG. 64  is a cross-sectional view of a retroreflector according to a twenty-ninth embodiment of the present invention. 
     
    
    
     MODE FOR CARRYING OUT THE INVENTION 
     First Embodiment 
     The first embodiment of this technology will be described with reference to  FIGS. 1 to 5 . In this section, a television device  10 TV (an example of a liquid crystal display device  10 ) including a lighting unit  12  (a backlight unit) will be described. An X-axis, a Y-axis, and a Z-axis are present in some drawings for the purpose of illustration. 
     The television device  10 TV and the liquid crystal display device  10  will be described.  FIG. 1  an exploded perspective view illustrating a schematic configuration of the television display device  10 TV.  FIG. 2  is a cross-sectional view along line A-A in  FIG. 1 . 
     As illustrated in  FIG. 1 , the television device  10 TV includes the liquid crystal display device  10  (an example of a display device), a front cabinet  10 Ca, a rear cabinet  10 Cb, a power supply  10 P, a tuner  10 T (a receiver), and a stand  10 S. 
     The liquid crystal display device  10  in this embodiment has a horizontally-long rectangular overall shape elongated in the horizontal direction. As illustrated in FIG.  2 , the liquid crystal display device  10  mainly includes a liquid crystal panel  11 , the lighting unit  12  (the backlight unit), and a bezel  13 . The liquid crystal panel  11  is used as a display panel. The lighting unit  12  is an external light source configured to supply light to the liquid crystal panel  11 . The bezel  13  has a frame shape and holds the liquid crystal panel  11  and the lighting unit  12 . 
     The liquid crystal panel  11  includes a pair of transparent boards and a liquid crystal layer sealed between the substrates. The liquid crystal panel  11  is configured to display an image visible on a panel surface using the light emitted by the lighting unit  12 . The liquid crystal panel  11  has a horizontally-long rectangular shape in a plan view. One of the boards of the liquid crystal panel  11  is an array board including a transparent glass substrate, thin film transistors (TFTs) which are switching components, and pixel electrodes. The TFTs and the pixel electrodes are arranged in a matrix on the substrate. The other board is a color filter (CF) board including a transparent glass substrate and color filters. The color filters include red, green, and blue color filters arranged in a matrix on the glass substrate. 
     The lighting unit  12  is a device disposed behind the liquid crystal panel  11  for supplying light to the liquid crystal panel  11 . The lighting unit  12  is configured to emit white light rays. In this embodiment, the lighting unit  12  is an edge light type (or a side light type) lighting device. 
     As illustrated in  FIG. 2 , the lighting unit  12  includes a chassis  14 , an optical member  15 , a frame  16 , LEDs  17 , an LED board  18 , a light guide plate  19 , a reflection sheet  20 , and complementary color members  22 . 
     The chassis  14  has a box-like overall shape. The chassis  14  is formed from a metal sheet such as an aluminum sheet and an electro galvanized steel sheet (SECC). The chassis  14  includes a bottom plate  14   a  and sidewall plates  14   b . The bottom plate  14   a  has a rectangular shape similar to the liquid crystal panel in the plan view. The sidewall plates  14   b  rise from edges of the bottom plate  14   a  and surround the bottom plate  14   a.    
     The chassis  14  holds various kinds of components including the LEDs  17 , the LED board  18 , the reflection sheet  20 , the light guide plate  19 , and the optical member  15 . Circuit boards including a control board and an LED driver board, which are not illustrated, are attached to an external surface of the chassis  14 . 
     The reflection sheet  20  is placed to cover a surface of the bottom plate  14   a  inside the chassis  14 . The reflection sheet  20  (an example of a reflecting member) is a sheet shaped member having light reflectivity. The reflection sheet  20  may be made of white foamed polyethylene terephthalate (an example of a white plastic sheet). The light guide plate  19  is place on the reflection sheet  20  and held in the chassis  14 . 
     The light guide plate  19  is made of transparent synthetic resin having high light transmissivity and a refraction index sufficiently higher than that of air (e.g., acrylic resin such as PMMA, polycarbonate resin). The light guide plate  19  is a plate shaped member having a rectangular shape similar to the liquid crystal panel in the plan view. The light guide plate  19  is held in the chassis  14  such that a front surface  19   a  thereof is opposed to the liquid crystal panel  11  and a back surface (an opposite surface)  19   b  thereof are opposed to the reflection sheet  20 . 
     The front surface  19   a  of the light guide plate  19  is configured as a light exiting surface  19   a  through which light rays exit toward the liquid crystal panel  11 . In this specification, the back surface  19   b  on a side opposite from the light exiting surface  19   a  may be referred to as “the opposite surface.” 
     The optical member  15  is supported by the frame  16  between the light exiting surface  19   a  and the liquid crystal panel  11 . A first short end surface  19   c  of the light guide plate  19  is configured as a light entering surface  19   c  through which light rays from LEDs  17  enter. 
     A second short end surface  19   d  and two long end surfaces  19   e  and  19   f  of the light guide plate  19  are not opposed to the LEDs  17  and the light source (the LEDs  17 ). Therefore, they may be referred to as light source non-opposed surfaces. Especially, the light source non-opposed surface on a side opposite from the light entering surface  19   c  (the second short end surface  19   d ) may be referred to as “an opposite-side light source non-opposed surface.” 
     The frame  16  has a frame shape (a picture frame shape) as a whole to cover a peripheral portion of the light guide plate  19  from the front side. The frame  16  is fitted in an opening of the chassis  14 . The frame  16  is made of synthetic resin and painted in white to have light reflectivity. The frame  16  includes a frame portion  161  and a projected wall portion  162 . The frame portion  161  has a frame shape in the plan view. The frame portion  161  includes an inner end held against the peripheral portion of the light guide plate  19  in the chassis  14  from the front side. The projected wall portion  162  projects from the frame portion  161  toward the bottom plate  14   a  of the chassis  14 . The projected wall portion  162  is held in the chassis  14 . 
     The frame portion  161  has the frame shape such that the inner end overlaps the peripheral portion of the light guide plate  19  and the peripheral portion overlaps upper ends of the sidewall plates  14   b  of the chassis  14 . An elastic member  21  made of urethane foam is attached to a back surface of the inner end of the frame portion  161 . The elastic member  21  in this embodiment is in black and has a light blocking property. The elastic member  21  has a frame shape (or a ring shape) as a whole. The elastic member  21  is brought into contact with the peripheral portion of the light guide plate  19  from the front side. 
     The inner end of the frame portion  161  is configured such that the front surface thereof is one step lower than the front surface of the peripheral portion. The end of the optical member  15  is placed on the surface that is one step lower. The front surface of the inner end of the frame portion includes protrusions that are not illustrated. The end of the optical member  15  includes holes in which the protrusions are fitted and the optical member  15  is supported by the frame portion  161 . 
     The projected wall portion  162  has a plate shape that extends from the outer end of the frame portion  161  toward the bottom plate  14   a  of the chassis  14  to be opposed to the end surface  19   c  of the light guide plate  19 . The LED board  18  on which the LEDs  17  are mounted are attached to a portion of the projected wall portion  162  opposed to the first short end surface  19   c  of the light guide plate  19 . A portion of the projected wall portion  162  other than the portion to which the LED board  18  is attached is placed between the end surface of the light guide plate  19  and the sidewall plate  14   b  and held in the chassis  14 . 
     Each LED  17  (an example of a light source) includes a blue LED component (a blue light emitting component), a transparent sealing member, and a case. The blue LED component is a light emitting source in a form of a chip. The sealing member seals the blue LED component. The case has a box-like shape and holds the blue LED component and the sealing member therein. Each LED  17  is configured to emit blue light rays. The blue LED component is a semiconductor made of InGaN, for example. When a forward bias is applied, the blue LED component emits light rays in a wavelength range of blue light (about 420 nm to about 500 nm), that is, blue light rays. In this specification, the light rays emitted by each LED  17  may be referred to as primary light rays. 
     Each LED  17  is a so-called top surface emitting type LED. The LEDs  17  are surface-mounted on the LED board  18  having an elongated shape. The LEDs  17  are arranged in line at equal intervals on the LED board  18 . The LED board  18  on which the LEDs  17  are mounted is attached to the projected wall portion  162  of the frame  16  such that the light emitting surfaces  17   a  are opposed to the first short end surface  19   c  of the light guide plate  19  and held in the chassis  14 . The LEDs  17  are configured to emit light rays (blue light rays) toward the light entering surface  19   c  of the light guide plate  19 . 
     The optical member  15  has a horizontally-long rectangular shape similar to the liquid crystal panel  11  in the plan view. The optical member  15  is disposed between the light exiting surface  19   a  of the light guide plate  19  and the back surface of the liquid crystal panel  11  with the outer end placed on the frame portion  161  of the frame  16  from the front side. The optical member  15  has a function for exerting predefined optical effects on the light rays exiting from the light guide plate  19  and directs the light rays toward the liquid crystal panel  11 . The optical member  15  includes multiple sheets that are placed in layers (optical sheets). 
     The sheets of the optical member  15  (the optical sheets) may be a diffuser sheet, a lens sheet, and a reflective type polarizing sheet. The optical member  15  in this embodiment includes a phosphor sheet  150  containing quantum dot phosphors (an example of a wavelength converting member) as a mandatory member (optical sheet). The phosphor sheet  150  is disposed the closest to the light exiting surface  19   a  among the sheets of the optical member  15 . 
     The phosphor sheet  150  will be described. The phosphor sheet  150  has a rectangular shape similar to the liquid crystal panel  11  in the plan view. The phosphor sheet  150  passes some of the light rays from the LEDs  17  in the thickness direction thereof. The phosphor sheet  150  absorbs some of the light rays from the LEDs  17 , converts the light rays into light rays in a different wavelength range, and releases the light rays. The phosphor sheet  150  includes a wavelength converting layer, a pair of supporting layers, and a pair of barrier layers. The supporting layers sandwich the wavelength converting layer. The barrier layers are formed on outer sides of the supporting layers to sandwich the wavelength converting layer and the supporting layers. 
     The wavelength converting layer contains an acrylic resin as a binder resin and the quantum dot phosphors (an example of phosphors) dispersed in the acrylic resin. The acrylic resin is transparent and has light transmissivity. The acrylic resin has adhesiveness to the supporting layers. The supporting layers are sheet (or film) members made of polyester based resin such as polyethylene terephthalate (PET). 
     The quantum dot phosphors are phosphors having high quantum efficiency. The quantum dot phosphors include semiconductor nanocrystals (e.g., diameters in a range from 2 nm to 10 nm) which tightly confine electrons, electron holes, or excitons with respect to all direction of a three dimensional space to have discrete energy levels. A peak wavelength of emitting light rays (a color of emitting light rays) is freely selectable by changing the dot size. 
     In this embodiment, the wavelength converting layer includes green quantum dot phosphors and red quantum dot phosphors as quantum dot phosphors. The green quantum dot phosphors emit green light (in a wavelength range from about 500 nm to about 570 nm). The red quantum dot phosphors emit red light rays (in a wavelength range from about 600 nm to about 780 nm). An emitting light spectrum of the green light rays emitted by the green quantum dot phosphors and an emitting light spectrum of the red light rays emitted by the red quantum dot phosphors have sharp peaks, respectively. A half width of each peak is small, that is, purity of green and purity of red are very high and their color gamut is large. 
     The green quantum dot phosphors absorb the light rays from the LEDs  17  (the blue light rays, the primary light rays, exciting light rays). The green quantum dot phosphors are excited by the light rays and emit green light rays (in the wavelength range from about 500 nm to 570 nm). Namely, the green quantum dot phosphors have functions for converting the light rays from the LEDs  17  (the blue light rays, the primary light rays, the exciting light rays) to light rays in the different wavelength range (the green light rays). 
     The red quantum dot phosphors absorb the light rays from the LEDs  17  (the blue light rays, the primary light rays, exciting light rays). The red quantum dot phosphors are excited by the light rays and emit red light rays (in the wavelength range from about 600 nm to 780 nm). Namely, the red quantum dot phosphors have functions for converting the light rays from the LEDs  17  (the blue light rays, the primary light rays, the exciting light rays) to light rays in the different wavelength range (the red light rays). 
     Materials used for the quantum dot phosphors include a material prepared by combining elements that could be divalent cations such as Zn, Cd, and Pb and elements that could be divalent anions such as O, S, Se, and Te (e.g., cadmium selenide (CdCe), zinc sulfide (ZnS), a material prepared by combining elements that could be trivalent cations such as Ga and In and elements that could be trivalent anions such as P, As, and Sb (e.g., indium phosphide (InP), gallium arsenide (GaAs), and chalcopyrite type compounds (CuInSe2). In this embodiment, CdSe is used for the material of the quantum dot phosphors. 
     In this embodiment, the quantum dot phosphors (the green quantum dot phosphors and the red quantum dot phosphors) are evenly dispersed in the acrylic resin in the wavelength converting layer. The wavelength converting layer may contain other components such as a scattering agent. 
     The barrier layers are formed from metal oxide films such as alumina films and silicon oxide films. The barrier layers have functions for protecting the quantum dot phosphors in the wavelength converting layer from moisture (water) and oxygen. The barrier layers may be formed on the supporting layers by a vacuum deposition method. 
     The complementary color members  22  will be described with reference to  FIGS. 3 to 5 .  FIG. 3  is a plan view schematically illustrating positional relationships of the complementary color members  22 , the light guide plate  19 , and the LEDs  17  with one another.  FIG. 4  is a magnified cross-sectional view illustrating the light entering surface  19   c  and therearound illustrated in  FIG. 2 .  FIG. 5  is a magnified cross-sectional view illustrating the opposite-side light source non-opposed surface  19   d  and therearound illustrated in  FIG. 2 . 
     The complementary color members  22  are in color that makes a complementary color pair with the color of light rays emitted by the LEDs  17  (the primary light rays, the blue light rays), that is, blue (reference color). In this embodiment, the color is yellow. The complementary color members  22  have functions for absorbing light rays in blue (the blue light rays, the primary light rays) which makes the complementary color pair with yellow exhibited by the complementary color members  22  and for reflecting light rays in color other than blue. 
     The complementary color members  22  are not limited to a specific configuration as long as surfaces of the complementary color members  22  exhibit yellow. The complementary color members  22  may include thin resin base sheets (or films) colored by forming yellow coating films on surfaces of the resin base sheets. 
     In the lighting unit  12  in this embodiment, the complementary color members  22  are disposed on the light entering surface  19   c  side and on the opposite-side light source non-opposed surface  19   d  side opposite from the light entering surface  19   c  side with respect to the light guide plate  19 , respectively. In this specification, the complementary color member  22  on the light entering surface  19   c  side may be referred to as “the complementary color member  22 A” and the complementary color member  22  in the opposite-side light source non-opposed surface  19   d  side may be referred to as “a complementary color member  22 B.” 
     As illustrated in  FIGS. 3 and 4 , a complementary color member  22 A on the light entering surface  19   c  side is formed to cover the space S 1  between the LEDs  17  and a light entering end  190  of the light guide plate  19  including the light entering surface  19   c  at least from the light exiting surface  19   a  side. The light entering end  190  is one of the short ends of the light guide plate  19  including the light entering surface  19   c  opposed to the LEDs  17 . 
     The complementary color member  22 A has an elongated rectangular shape (a band shape) along the transverse direction of the light guide plate  19  from the LEDs  17  to the light entering end  190  across the space S 1 . In this embodiment, the complementary color member  22 A extends from a mounting surface  18   a  of the LED board  18  to the light entering end  190 . As illustrated in  FIG. 3 , the complementary color member  22 A extends along the transverse direction of the light guide plate  19  without breaks. 
     The complementary color member  22 A is fixed to a back surface  161 Aa of a frame section  161 A of the frame portion  161  of the frame  16  along the light entering end  190  with a fixing member such as a double-sided adhesive tape (not illustrated). 
     Some of the light rays emitted by the LEDs  17  (the primary light rays, the blue light rays) travel toward the frame section  161 A of the frame  16  through the space S 1  between the LEDs  17  and the light entering surface  19   c  (or a space between the mounting surface  18   a  of the LED board  18  and the light entering surface  19   c ) without entering the light guide plate  19  through the light entering surface  19   c . The light rays that travel toward the frame section  161 A are mainly the light rays without the wavelength conversion after emitted by the LEDs  17  (the blue light rays). 
     Light intensity is higher in the area closer to the LEDs  17  in comparison to other areas. Furthermore, a percentage of the light rays without the wavelength conversion by the phosphor sheet  150  (i.e., the primary light rays) is higher in the area closer to the LEDs  17  in comparison to other areas. In such a condition, some of the blue light rays (the primary light rays) traveling toward the frame section  161 A of the frame  16  and reaching the complementary color member  22 A are absorbed by the complementary color member  22 A. 
     Some of the light rays reaching the complementary color member  22 A are in a state after the wavelength conversion by the phosphor sheet  150 . Such rays are retroreflected by the optical member  15  after the wavelength conversion and returned to the light guide plate  19 . If the light rays after the wavelength conversion are reflected by the reflection sheet  20  toward the frame section  161 A of the frame  16 , the light rays are reflected by the complementary color member  22 A and returned to the light guide plate  19 . 
     An inner end of the frame section  161 A of the frame  16  is placed on the light entering end  190  on the front side (the light exiting surface  19   a  side) via the elastic member  21  having the light blocking property. The elastic member  21  linearly elongates along the transverse direction of the light guide plate  19 . Ideally, the elastic member  21  seals the gap between the frame section  161 A and the light entering end  190 . If the components of the frame  16  and the light guide plate  19  are deformed, for example, warped or curved, a small gap may be formed between the elastic member  21  and the light entering end  190  (i.e., between the frame section  161 A and the light entering end  190 ). In this case, the primary light rays (the blue light rays) with the higher percentage may leak through the gap and travel toward an end  150   a  of the phosphor sheet  150 . 
     In this embodiment, the complementary color member  22 A is attached to the back surface  161 Aa of the frame section  161 A of the frame  16  as described above. Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  22 A and other rays of the primary light rays are reflected. Therefore, light supplied to the end  150   a  of the phosphor sheet  150  includes a relatively low percentage of the primary light rays (the blue light rays). Furthermore, the light supplied to the end  150   a  of the phosphor sheet  150  is whitish. The primary light rays (the blue light rays) passing through the end  150   a  of the phosphor sheet  150  without the wavelength conversion can be reduced. Therefore, light passing through the optical member  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. Namely, the light rays exiting from an end portion of the lighting unit  12  in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 . Therefore, the planar light emitted by the lighting unit  12  including the light rays is less likely to have color unevenness. 
     Next, the complementary color member  22 B on the opposite-side light source non-opposed surface  19   d  side will be described with reference to  FIGS. 3 and 5 . As illustrated in  FIGS. 3 and 5 , the complementary color member  22 B is formed to cover the space S 2  (the second space) between a light source non-opposed end  191  of the light guide plate  19  including the opposite-side light source non-opposed surface  19   d  (an example of the light source non-opposed surface) and a projected wall  162 B (an example of an opposed member) of the frame  16  opposed to the opposite-side light source non-opposed surface  19   d  at least from the light exiting surface  19   a  side. The light source non-opposed end  191  is one of the short ends of the light guide plate  19  including the opposite-side light source non-opposed surface  19   d  opposed to the projected wall  162 B (an example of the opposed member). 
     The complementary color member  22 B has an elongated rectangular shape (a band shape) along the transverse direction of the light guide plate  19 , similar to the complementary color member  22 A described above. The complementary color portion  22 B extends from the projected wall  162 B to the light source non-opposed end  191  across the space S 2 . In this embodiment, the complementary color member  22 B has a width smaller than the width of the complementary color member  22 A. As illustrated in  FIG. 3 , the complementary color member  22 B extends along the transverse direction of the light guide plate  19  without breaks. 
     The complementary color member  22 B is fixed to a back surface  161 Ba of a frame section  161 B of the frame portion  161  of the frame  16  along the light source non-opposed end  191  with a fixing member such as a double-sided adhesive tape (not illustrated). 
     Some of the light rays emitted by the LEDs  17  and traveling through the light guide plate  19  (the primary light rays, the blue light rays) exit through the opposite-side light source non-opposed surface  19   d  toward the space S 2 . The rays are reflected by the projected wall  162 B toward the frame section  161 B of the frame  16  through the space S 2 . Most of the light rays traveling toward the frame section  161 B are the light rays without the wavelength conversion (the primary light rays, the blue light rays). 
     A percentage of light rays without the wavelength conversion by the phosphor sheet  150  (i.e., the primary light rays) is higher in the area closer to the opposite-side light source non-opposed surface  19   d  opposite from the light entering surface  19   c  in comparison to the center area of the light guide plate  19 . In such a condition, some of the blue light rays (the primary light rays) traveling toward the frame section  161 B of the frame  16  and reaching the complementary color member  22 B on the back surface  161 Ba of the frame section  161 B are absorbed by the complementary color member  22 B. 
     Some of the light rays reaching the complementary color member  22 B are in a state after the wavelength conversion by the phosphor sheet  150 . Such rays are retroreflected by the optical member  15  after the wavelength conversion and returned to the light guide plate  19 . If the light rays after the wavelength conversion are reflected by the reflection sheet  20  toward the frame section  161 B of the frame  16 , the light rays are reflected by the complementary color member  22 B and returned to the light guide plate  19 . 
     An inner end of the frame section  161 B of the frame  16  is placed on the light source non-opposed end  191  on the front side (the light exiting surface  19   a  side) via the elastic member  21  having the light blocking property. The elastic member  21  linearly elongates along the transverse direction of the light guide plate  19 . Ideally, the elastic member  21  seals the gap between the frame section  161 B and the light source non-opposed end  191 . If the components of the frame  16  and the light guide plate  19  are deformed, for example, warped or curved, a small gap may be formed between the elastic member  21  and the light source non-opposed end  191  (i.e., between the frame section  161 B and the light source non-opposed end  191 ). In this case, light including the primary light rays (the blue light rays) with the higher percentage may leak through the gap and travel toward an end  150   b  of the phosphor sheet  150 . 
     In this embodiment, the complementary color member  22 B is attached to the back surface  161 Ba of the frame section  161 B of the frame  16  as described above. Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  22 B and other primary light rays are reflected. Therefore, light including the primary light rays (the blue light rays) with a relatively low percentage is supplied to the end  150   b  of the phosphor sheet  150 . The light supplied to the end  150   b  of the phosphor sheet  150  is whitish. The primary light rays (the blue light rays) passing through the end  150   b  of the phosphor sheet  150  without the wavelength conversion can be reduced. Therefore, the light including the light rays passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. Namely, the light rays exiting from an end portion of the lighting unit  12  on a side opposite from a side on which the LEDs  17  are disposed (on the light source non-opposed end  191  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 . Therefore, the planar light emitted by the lighting unit  12  including the light rays is less likely to have color unevenness. 
     Second Embodiment 
     A second embodiment of the technology will be described with reference to  FIGS. 6 to 9 . In this section, a liquid crystal display device  10 A including a lighting unit  12 A will be described. A basic configuration of the liquid crystal display device  10 A according to this embodiment is the same as that of the first embodiment. Components the same as those of the first embodiment will be indicated by the same symbols and will not be described. 
       FIG. 6  is a cross-sectional view of the liquid crystal display device  10 A according to the second embodiment along the longitudinal direction of the liquid crystal display device  10 A. The liquid crystal display device  10 A according to this embodiment include complementary color members  23  disposed on the back surface  19   b  (the opposite surface) of the light guide plate  19 , which is different from the first embodiment. 
     The complementary color members  23  are in color that makes a complementary color pair with the color of light rays emitted by the LEDs  17  (the primary light rays, the blue light rays), that is, blue (reference color). In this embodiment, the color is yellow. The complementary color members  23  have functions for absorbing the light rays in blue (the blue light rays, the primary light rays) which makes the complementary color pair with yellow that is the color of light the complementary color members  23  and for reflecting light rays in color other than blue. 
     In the lighting unit  12 A in this embodiment, the complementary color members  23  are disposed on the back surface  19   b  of the light guide plate  19  on the light entering surface  19   c  side and the back surface  19   b  on the opposite-side light source non-opposed surface  19   d  side opposite from the light entering surface  19   c  side with respect to the light guide plate  19 , respectively. In this specification, the complementary color member  23  on the light entering surface  19   c  side may be referred to as “the complementary color portion  23 A” and the complementary color member  23  in the opposite-side light source non-opposed surface  19   d  side may be referred to as “a complementary color portion  23 B.” 
       FIG. 7  is a plan view schematically illustrating positional relationships of the complementary color members  23 , the light guide plate  19 , a reflection sheet  20 A, and the LEDs  17  with one another.  FIG. 8  is a magnified cross-sectional view illustrating the light entering surface  19   c  and therearound illustrated in  FIG. 6 .  FIG. 9  is a magnified cross-sectional view illustrating the opposite-side light source non-opposed surface  19   d  and therearound illustrated in  FIG. 6 . 
     As illustrated in  FIGS. 7 and 8 , a complementary color member  23 A on the light entering surface  19   c  side is formed to cover the light entering end  190  of the light guide plate  19  including the light entering surface  19   c  at least from the back surface  19   b  (the opposite surface) side. 
     The complementary color member  23 A is fixed to an end of the reflection sheet  20 A (an example of a reflection member) on the LED  17  side with a fixing member such as a double-sided adhesive tape (not illustrated). The reflection sheet  20 A may be made of white foamed polyethylene terephthalate similar to the first embodiment. The reflection sheet  20 A includes a reflection body  200  and a reflection extended portion  201 . The reflection body  200  overlaps the back surface  19   b  (the opposite surface) of the light guide plate  19  in the chassis  14 . The reflection extended portion  201  extends from the reflection body  200  toward the LEDs  17  and projects outward from the back surface  19   b  (the opposite surface). 
     The complementary color member  23 A is formed over the entire front surface of the reflection extended portion  201  of the reflection sheet  20 A and the entire front surface of an end  200   a  of the reflection body  200  on the LED  17  side. The complementary color member  23 A has an elongated rectangular shape (a band shape) as a whole along the transverse direction of the light guide plate  19 . As illustrated in  FIG. 7 , the complementary color member  23 A extends along the transverse direction of the light guide plate  19  without breaks. 
     According to the configuration of this embodiment in which the end (the reflection extended portion  201 , the end  200   a  of the reflection body  200 ) of the reflection sheet  20 A placed under the light guide plate  19  is arranged closer to the LEDs  17 , some of the light rays emitted by the LEDs  17  (the primary light rays) are reflected to rise toward the liquid crystal panel  11  by the end (the reflection extended portion  201 ) of the reflection sheet  20 A without entering the light guide plate  19 . The light rays transmit through the light guide plate  19  and reach the end  150   a  of the phosphor sheet  150 . Similar to the first embodiment, if a gap is formed between the light guide plate  19  and the frame section  161 A of the frame  16  (between the light guide plate  19  and the elastic member  21 ), the light rays reflected by the end of the reflection sheet  20 A pass through the gap and reach the end  150   a  of the phosphor sheet  150 . 
     Some of the light rays emitted by the LEDs  17  (the primary light rays) that have entered the light guide plate  19  are reflected by the end of the reflection sheet  20 A (the reflection extended portion  201 , the end  200   a  of the reflection body  200 ) to rise toward the liquid crystal panel  11 . The light rays transmit through the light guide plate  19  and reach the end  150   a  of the phosphor sheet  150 . Some of the light rays reflected by the end of the reflection sheet  20 A may pass through the gap between the light guide plate  19  and the frame section  161 A of the frame  16  (between the light guide plate  19  and the elastic member  21 ). 
     If the end of the reflection sheet  20 A is warped and a gap is formed between the back surface  19   b  of the light guide plate  19  and the reflection sheet  20 A, the position (the arrangement angle) of the reflection sheet  20 A changes from the original position, resulting in more light rays traveling toward the end  150   a  of the phosphor sheet  150 . 
     A percentage of the primary light rays (the blue light rays) in the light reaching the end of the reflection sheet  20 A (the reflection extended portion  201 , the end  200   a  of the reflection body  200 ) is higher in comparison to other portions (e.g., the center of the reflection sheet  20 A). Intensity of the light in the area closer to the LEDs  17  is higher. 
     As described above, this embodiment includes the complementary color member  23 A on the front surface of the end of the reflection sheet  20 A (the reflection extended portion  201 , the end  200   a  of the reflection body  200 ). Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  23 A and other primary light rays are reflected. The light including the primary light rays (the blue light rays) with a lower percentage is supplied to the end  150   a  of the phosphor sheet  150 . The light supplied to the end  150   a  of the phosphor sheet  150  is whitish. The primary light rays (the blue light rays) passing through the end  150   a  of the phosphor sheet  150  without the wavelength conversion can be reduced. Therefore, light passing through the optical member  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. Namely, the light rays exiting from an end portion of the lighting unit  12 A in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 A. Therefore, the planar light emitted by the lighting unit  12 A including the light rays is less likely to have color unevenness. 
     Next, the complementary color member  23 B on the opposite-side light source non-opposed surface  19   d  side will be described with reference to  FIGS. 7 and 9 . As illustrated in  FIGS. 7 and 9 , the complementary color member  23 B is formed to cover the light source non-opposed end  191  of the light guide plate  19  including the opposite-side light source non-opposed surface  19   d  (an example of the light source non-opposed surface) at least from the back surface  19   b  (the opposite surface) side. 
     The complementary color member  23 B is fixed to an end of the reflection sheet  20 A (an example of a reflection member) on the projected wall  162 B side (an example of the opposed member) with a fixing member such as a double-sided adhesive tape (not illustrated). The reflection sheet  20 A includes a second reflection extended portion  202  that extends from the reflection body  200  toward the projected wall  162 B and projects outward from the back surface  19   b  (the opposite surface). 
     The complementary color member  23 B is formed over the entire front surface of the second reflection extended portion  202  of the reflection sheet  20 A and the entire front surface of an end  200   b  of the reflection body  200  on the projected wall  162 B side. The complementary color member  23 B has an elongated rectangular shape (a band shape) as a whole along the transverse direction of the light guide plate  19 . The complementary color member  23 B extends along the transverse direction of the light guide plate  19  without breaks. 
     Some of the light rays emitted by the LEDs  17  and traveling through the light guide plate  19  (the primary light rays, the blue light rays) travel toward the end of the reflection sheet  20 A (the second reflection extended portion  202 , the end  200   b  of the reflection body  200 ). A percentage of the light rays without the wavelength conversion by the phosphor sheet  150  (i.e., the primary light rays) is higher in the area closer to the opposite-side light source non-opposed surface  19   d  in comparison to the center of the light guide plate  19 . In such a condition, the light rays traveling toward the end of the reflection sheet  20 A (the second reflection extended portion  202 , the end  200   b  of the reflection body  200 ) reach the complementary color member  23 B and some rays of the blue light rays (the primary light rays) are absorbed by the complementary color member  23 B. 
     Some of the light rays reaching the complementary color member  23 B include the light rays after the wavelength conversion by the phosphor sheet  150 . Such rays are reflected by the complementary color member  23 B toward to the phosphor sheet  150 . 
     If a gap is formed between the light guide plate  19  and the frame section  161 B of the frame  16  (between the light guide plate  19  and the elastic member  21 ) as in the first embodiment, the light rays reflected by the end of the reflection sheet  20 A pass through the gap and reach the end  150   a  of the phosphor sheet  150 . 
     If the end of the reflection sheet  20 A is warped and a gap is formed between the back surface  19   b  of the light guide plate  19  and the reflection sheet  20 A, the position (the arrangement angle) of the reflection sheet  20 A changes from the original position, resulting in more light rays traveling toward the end  150   a  of the phosphor sheet  150 . 
     As described above, this embodiment includes the complementary color member  23 B on the front surface of the end of the reflection sheet  20 A (the second reflection extended portion  202 , the end  200   b  of the reflection body  200 ). Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  23 B and other primary light rays are reflected. The light including the primary light rays (the blue light rays) with a lower percentage is supplied to the end  150   a  of the phosphor sheet  150 . The light supplied to the end  150   a  of the phosphor sheet  150  is whitish. The primary light rays (the blue light rays) passing through the end  150   a  of the phosphor sheet  150  without the wavelength conversion can be reduced. Therefore, light passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. Namely, the light rays exiting from an end portion of the lighting unit  12 A in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 A. Therefore, the planar light emitted by the lighting unit  12 A including the light rays is less likely to have color unevenness. 
     Third Embodiment 
     A third embodiment of the present invention will be described with reference to  FIGS. 10 and 11 . In this section, a liquid crystal display device  10 B including a lighting unit  12 B will be described. 
       FIG. 10  is a partial plan view schematically illustrating a lighting unit  12 B according to the third embodiment.  FIG. 11  is a magnified cross-sectional view illustrating a light entering surface and therearound in the liquid crystal display device  10 B according to the third embodiment. The lighting unit  12 B in the liquid crystal display device  10 B according to this embodiment includes a phosphor tube  50  as a wavelength converting member. 
     The phosphor tube  50  has an elongated overall shape. The phosphor tube  50  is disposed along a direction in which the LEDs  17  are arranged in line (the transverse direction of the light guide plate  19  in this embodiment) between the light emitting surfaces  17   a  of the LEDs  17  and the light entering surface  19   c  of the light guide plate  19 . The phosphor tube  50  includes a wavelength converter  51  and a holder  52 . The wavelength converter  51  contains quantum dot phosphors (an example of phosphors). The holder  52  holds the wavelength converter  51  to surround the wavelength converter  51 . The holder  52  is an elongated member having light transmissivity. 
     The wavelength converter  51  has a function for converting the primary light rays emitted by the LEDs  17  (the blue light rays in this embodiment) into secondary light rays with wavelengths in a wavelength range different from a wavelength range of the primary light rays (the green light rays and the red light rays in this embodiment). The wavelength converter  51  is made of curable resin material with the quantum dot phosphors added. An example of the resin with the quantum dot phosphors added is an ultraviolet curable resin. The wavelength converter  51  held in the holder  52  having the elongated shape in this embodiment extends along the longitudinal direction of the holder  52 . The quantum dot phosphors used in the first embodiment may be used. 
     The holder  52  has the elongated overall shape. The holder  52  includes a tube having the light transmissivity. Ends of the holder  52  are closed when the wavelength converter  51  is inside the holder  52 . For example, a glass tube including one open end and one closed end is prepared and the open end is closed after the wavelength converter  51  is inserted. This completes the holder portion  52 . 
     The holder  52  includes a transparent wall in a tubular shape to surround the wavelength converter  51 . The holder  52  includes an elongated tubular body  53  and two sealing ends  54  and  55 . The tubular body  53  includes a space for holding the wavelength converter  51  therein. The sealing ends  54  and  55  close (seal) the respective ends of the tubular body  53  at ends in the long-side direction. The sealing ends  54  and  55  are ends of the holder  52  at ends in the long-side direction and ends of the phosphor tube  50  at ends in the long-side direction. 
     The phosphor tube  60  (the wavelength converting member) is produced by adding and mixing the quantum dot phosphors to and with the transparent ultraviolet curable resin having flowability, inserting the mixture into the glass tube, sealing (closing) the open end of the glass tube, and curing the resin in the glass tube through application of ultraviolet rays. 
     In this embodiment, the phosphor tube  50  is sandwiched between the bottom plate  14   a  of the chassis  14  and the frame section  161 A of the frame  16  and fixed at a position between the LEDs  17  and the light entering surface  19   c  using a holding member that is not illustrated. 
     As illustrated in  FIGS. 10 and 11 , the phosphor tube  50  is disposed in the lighting unit  12 B such that the wavelength converter  51  held in the holder  52  overlap the light emitting surfaces  17   a  of the LEDs  17  and the light entering surface  19   c  of the light guide plate  19  with respect to the light emitting direction of the LEDs  17  (an optical axis direction L of the LEDs  17 ). 
     The lighting unit  12  in the phosphor tube  50  includes a transparent portion  52   a  that is a portion of the wall of the holder  52  extending along the longitudinal direction on the front side of the lighting unit  12 B (the frame  16  side). The transparent portion  52   a  is made of material having light transmissivity (e.g., glass) and does not have the wavelength converting function. The transparent portion  52   a  is referred to as a front-side wavelength non-converting section  52   a . Furthermore, the phosphor tube  50  includes a transparent portion that is a portion of the wall of the holder  52  extending along the longitudinal direction on the rear side of the lighting unit  12 B (the bottom plate  14   a  side). The transparent portion is made of material having light transmissivity (e.g., glass) similar to the front-side wavelength non-converting section  52   a . The transparent portion is referred to as a rear-side wavelength non-converting section  52   b.    
     As illustrated in  FIG. 11 , the phosphor tube  50  include sections that do not overlap the light emitting surfaces  17   a  of the LEDs  17  and the light entering surface  19   c  of the light guide plate  19  in the light emitting direction of the LEDs  17  (the optical axis direction L of the LEDs  17 ). The sections are the front-side wavelength non-converting section  52   a  and a rear-side wavelength non-converting section  52   b.    
     In the lighting unit  12 B, the ends  54  and  55  (the sealing ends) of the phosphor tube  50  are made of material having the light transmissivity (e.g., glass) and do not have the wavelength converting function. In the light emitting direction of the LEDs  17  (the optical axis direction L of the LEDs  17 ), the ends  54  and  55  are arranged outer than the light entering surface  19   c  as illustrated in  FIG. 11  such that the ends  54  and  55  do not overlap the light emitting surface  17   a  of the LEDs  17  and the light entering surface  19   c  of the light guide plate  19 . 
     In the lighting unit  12 B in this embodiment, a complementary color member  122  is disposed above the light entering surface  19   c  of the light guide plate  19 . The complementary color member  122  is made of material in color that makes a complementary color pair with blue (the reference color), which is the color of the light rays emitted by the LEDs  17  (the primary light rays, the blue light rays), similar to the complementary color members  22  in the first embodiment. In this embodiment, the color is yellow. The complementary color member  122  has functions for absorbing light rays in blue (the blue light rays, the primary light rays) which makes the complementary color pair with yellow exhibited by the complementary color member  122  and for reflecting light rays in color other than blue. 
     The complementary color member  122  is not limited to a specific configuration as long as a surface of the complementary color member  122  exhibits yellow. Similar to the first embodiment, the complementary color member  122  may include a thin resin base sheet (or film) colored by forming yellow coating film on a surface of the resin base sheet. 
     As illustrated in  FIG. 11 , the complementary color member  122  is formed to cover the space between the LEDs  17  and the light entering end  190  of the light guide plate  19  including the light entering surface  19   c  at least from the light exiting surface  19   a  side. In this embodiment, the phosphor tube  50  (the wavelength converting member) is disposed between the LEDs  17  and the light entering surface  19   c . Therefore, the complementary color member  122  is formed to cover the phosphor tube  50  from above. The light entering end  190  is one of short ends of the light guide plate  19  including the light entering surface  19   c  opposed to the LEDs  17 . 
     The complementary color member  122  has an elongated rectangular shape (a band shape) along the transverse direction of the light guide plate  19  from the LEDs  17  to the light entering end  190  across the space. In this embodiment, the complementary color member  122  extends from the mounting surface  18   a  of the LED board  18  to the light entering end  190 . The complementary color member  122  extends along the transverse direction of the light guide plate  19  (in the direction in which the LEDs  17  are arranged in line) without breaks. 
     The complementary color member  122  is fixed to the back surface  161 Aa of the frame section  161 A of the frame portion  161  of the frame  16  arranged along the light entering end  190  with a fixing member such as a double-sided adhesive tape (not illustrated). 
     Some of the light rays emitted by the LEDs  17  (the primary light rays, the blue light rays) pass through the front-side wavelength non-converting section  52   a  without the wavelength conversion by the wavelength converter  51  of the phosphor tube  50  and travel toward the frame section  161 A of the frame  16 . 
     Intensity of light is larger in the area closer to the LEDs  17  in comparison to other areas. Furthermore, a percentage of the light rays without the wavelength conversion by the phosphor tube  50  (i.e., the primary light rays) is higher in the area closer to the LEDs  17  in comparison to other areas. In such a condition, some of the blue light rays (the primary light rays) traveling toward the back surface  161 Aa of the frame section  161 A and reaching the complementary color member  122  are absorbed by the complementary color member  122 . 
     Some of the light rays reaching the complementary color member  122  are in a state after the wavelength conversion by the phosphor tube  5 . If the light rays (secondary light rays) are reflected by the reflection sheet  20  toward the frame section  161 A of the frame  16  after the wavelength conversion, the light rays are reflected by the complementary color member  122  and returned to the light guide plate  19 . 
     An inner end of the frame section  161 A of the frame  16  is placed on the light entering end  190  on the front side (the light exiting surface  19   a  side) via the elastic member  21  having the light blocking property. The elastic member  21  linearly elongates along the transverse direction of the light guide plate  19 . Ideally, the elastic member  21  seals the gap between the frame section  161 A and the light entering end  190 . If the components of the frame  16  and the light guide plate  19  are deformed, for example, warped or curved, a small gap may be formed between the elastic member  21  and the light entering end  190  (i.e., between the frame section  161 A and the light entering end  190 ). In this case, the primary light rays (the blue light rays) with the higher percentage may leak through the gap. 
     In this embodiment, the complementary color member  122  is attached to the back surface  161 Aa of the frame section  161 A of the frame  16  as described above. Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  122 . Therefore, the primary light rays (the blue light rays) passing through the light entering end of the light guide plate  19  without the wavelength conversion can be reduced. The whitish light exits from the light entering end  190  of the light guide plate  19  similar to other portions. Therefore, light passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. With the complementary color member  122 , the light rays exiting from an end portion of the lighting unit  12 B in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 B. Therefore, the planar light emitted by the lighting unit  12 B including the light rays is less likely to have color unevenness. 
     Fourth Embodiment 
     A fourth embodiment of the present invention will be described with reference to  FIG. 12 . In this section, a liquid crystal display device  10 C including a lighting unit  12 C will be described. 
       FIG. 12  is a magnified cross-sectional view illustrating a light entering surface and therearound in the liquid crystal display device  10 C according to the fourth embodiment. The liquid crystal display device  10 C according to this embodiment includes the lighting unit  12 C that includes the phosphor tube  50  as the wavelength converting member as in the third embodiment. 
     In this embodiment, a complementary color member  123  is disposed to cover the light entering end  190  of the light guide plate  19  including the light entering surface  19   c  at least from the back surface  19   b  (the opposite surface) side, which is different from the third embodiment. 
     The complementary color member  123  is bonded to the end of the reflection sheet  20  (an example of a reflection member) on the LED  17  side using a fixing member such as a double-sided adhesive tape (not illustrated). The reflection sheet  20  is made of white foamed polyethylene terephthalate similar to the first embodiment. The reflection sheet  20  covers an entire back surface (the opposite surface) of the light guide plate  19  and includes an end disposed outer than the light entering surface  19   c  inside the chassis  14 . The complementary color member  123  is a thin member with a yellow surface similar to the third embodiment. 
     The complementary color member  123  is formed in an area corresponding to the end of the reflection sheet  20  disposed outer than the light entering surface  19   c  and a portion of the reflection sheet  20  overlapping the light entering end  190 . The complementary color member  123  has an elongated rectangular shape (a band shape) as a whole along the transverse direction of the light guide plate  19 . The complementary color member  123  extends along the transverse direction of the light guide plate  19  without breaks. 
     According to the configuration of this embodiment in which the end of the reflection sheet  20  placed under the light guide plate  19  is arranged closer to the LEDs  17 , some of the light rays exiting from the phosphor tube  50  are reflected by the end of the reflection sheet  20  disposed outer than the light entering surface  19   c  or the portion of the reflection sheet  20  covering the light entering end  190  from the rear side to rise toward the liquid crystal panel  11 . The light rays are directed to the light entering end  190  of the light guide plate  19  or therearound. 
     If the end of the reflection sheet  20  is warped and a gap is formed between the back surface  19   b  of the light guide plate  19  and the reflection sheet  20 , the position (the arrangement angle) of the reflection sheet  20  changes from the original position, resulting in more light rays reflected by the end of the reflection sheet  20  reach the light entering end  190  of the light guide plate  19  and therearound. Similar to the third embodiment, if a gap is formed between the light guide plate  19  and the frame section  161 A of the frame  16  (or between the light guide plate  19  and the elastic member  21 ), the light rays reflected by the end of the reflection sheet  20  leak through the gap. 
     Some of the primary light rays emitted by the LEDs  17  pass through the rear-side wavelength non-converting section  52   b  without the wavelength conversion by the wavelength convertor  51  of the phosphor tube  50  and reach the end of the reflection sheet  20  or therearound closer to the light entering end  190 . A percentage of the primary light rays (the blue light rays) in the light reaching the end of the reflection sheet  20 A is higher in comparison to other portions (e.g., the center of the reflection sheet  20 ). Intensity of light in the area closer to the LEDs  17  is high. 
     As described above, this embodiment includes the complementary color member  123  on the front surface of the end of the reflection sheet  20 . Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  123 . The primary light rays (the blue light rays) exiting from the phosphor tube  50  can be reduced in the area closer to the light entering end  190  of the light guide plate  19 . The whitish light exits from the light entering end  190  of the light guide plate  19  similar to other portions. Therefore, light passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. With the complementary color member  123 , the light rays exiting from an end portion of the lighting unit  12 C in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 C. Therefore, the planar light emitted by the lighting unit  12 C including the light rays is less likely to have color unevenness. 
     Fifth Embodiment 
     A fifth embodiment of the present invention will be described with reference to  FIGS. 13 and 14 . In this section, a liquid crystal display device  10 D including a lighting unit  12 D will be described. 
       FIG. 13  is a magnified cross-sectional view illustrating a light entering surface and therearound in the liquid crystal display device  10 D according to the fifth embodiment.  FIG. 14  is a front view of a holder  60 . The lighting unit  12 D in the liquid crystal display device  10 D according to this embodiment includes the phosphor tube  50  held with the holder  60  having an elongated shape. 
     As illustrated in  FIG. 13 , the phosphor tube  50  (the wavelength converting member) in this embodiment is disposed in a space between the LEDs  17  and the light entering surface  19   c  of the light guide plate  19  and held with the holder  60 . The holder  60  is a molded member made of white synthetic resin having high light reflectivity and formed in an elongated overall shape. The holder  60  has a C shaped cross section to sandwich a portion of the phosphor tube  50  holding the wavelength converter  51  in the vertical direction (the front-rear direction) for the entire length. The holder  60  includes a front-side holding wall  61 , a rear-side holding wall  62 , and a connecting wall  63 . The front-side holding wall  61  and the rear-side holding wall  62  sandwich the phosphor tube  50  in the vertical direction. The connecting wall  63  connects the front-side holding wall  61  to the rear-side holding wall  62  in the vertical direction (the front-rear direction). The connecting wall  63  is disposed closer to the LED  17  side (the LED board  18  side) than the phosphor tube  50 . The holder  60  holding the phosphor tube  50  in the vertical direction has an opening on the light entering surface  19   c  side. 
     The connecting wall  63  stands in the vertical direction inside the chassis  14  and extends along the direction in which the LEDs  17  are arranged in line. The connecting wall  63  includes holes  64  for exposing the LEDs  17  on the light entering surface  19   c  side. The connecting wall  63  is against the mounting surface  18   a  of the LED board  18  with the LEDs  17  exposed through the holes  64  inside the chassis  14 . 
     The phosphor tube  50  held with the holder  60  having such a configuration is fixed to the bottom plate  14   a  of the chassis  14  with a fixing member that is not illustrated. As illustrated in  FIG. 13 , the light emitting surfaces  17   a  of the LEDs  17  are closely attached to a wall surface of the holder  52  of the phosphor tube  50  in this embodiment. 
     In the lighting unit  12 D in this embodiment includes a thin complementary color member  222  with a yellow surface similar to the complementary color member  122  in the third embodiment. The complementary color member  222  is disposed above the light entering surface  19   c  of the light guide plate  19 . 
     The complementary color member  222  is formed to cover a gap between the light entering end  190  of the light guide plate  19  at least from the light exiting surface  19   a  side. In this embodiment, the phosphor tube  50  (the wavelength converting member) held with the holder is disposed between the LEDs  17  and the light entering surface  19   c . Therefore, the complementary color member  222  is formed to cover the holder  60  and the phosphor tube  50  from above. 
     The complementary color member  222  is fixed to the back surface  161 Aa of the frame section  161 A of the frame portion  161  of the frame  16  disposed along the light entering end  190  with a fixing member such as a double-sided adhesive tape (not illustrated). 
     Some of the light rays emitted by the LEDs  17  (the primary light rays, the blue light rays) pass the front-side wavelength non-converting section  52   a  without the wavelength conversion by the wavelength converter  51  of the phosphor tube  50  and travel toward the frame section  161 A of the frame  16 . 
     Because the phosphor tube  50  is held with the holder  60  in this embodiment, the wavelength conversion is not performed in spaces on the upper outer side and the lower outer side of the phosphor tube  50  corresponding to the holder  60  (by the thickness of the front-side holding wall  61  and by the thickness of the rear-side holding wall  62 ). Therefore, some of the primary light rays emitted by the LEDs  17  travel toward the frame section  161 A of the frame  16  without the wavelength conversion by the phosphor tube  50 . 
     In the area closer to the LEDs  17 , the intensity of light is higher in comparison to other areas. Furthermore, more light rays without the wavelength conversion by the phosphor tube  50  (i.e., more primary light rays) exist in the area closer to the LEDs  17  in comparison to other areas. In such a condition, the blue light rays (the primary light rays) traveling toward the frame section  161 A of the frame  16  and reaching the complementary color member  222  on the back surface  161 Aa of a frame section  151 A are absorbed by the complementary color member  122 . 
     In this embodiment, the primary light rays (the blue light rays) passing through the light entering end  190  of the light guide plate  19  without the wavelength conversion can be reduced. The whitish light exits from the light entering end  190  of the light guide plate  19 . Therefore, light passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. With the complementary color member  222 , the light rays exiting from an end portion of the lighting unit  12 D in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 D. Therefore, the planar light emitted by the lighting unit  12 D including the light rays is less likely to have color unevenness. 
     Sixth Embodiment 
     A sixth embodiment of the present invention will be described with reference to  FIG. 15 . In this section, a liquid crystal display device  10 E including a lighting unit  12 E will be described.  FIG. 15  is a magnified cross-sectional view illustrating a light entering surface and therearound in the liquid crystal display device  10 E according to the sixth embodiment. The lighting unit  12 E included in the liquid crystal display device  10  according to this embodiment includes the phosphor tube  50  held with the holder having the elongated shape similar to the fifth embodiment. 
     In this embodiment, similar to the fourth embodiment, a complementary color member  223  is disposed to cover the light entering end  190  of the light guide plate  19  including the light entering surface  19   c  at least from the back surface  19   b  (the opposite surface) side. The complementary color member  223  is the thin member including the yellow surface and extending in the transverse direction of the light guide plate  19  without breaks. 
     In this embodiment, the end of the reflection sheet  20  placed under the light guide plate  19  is arranged closer to the LEDs  17 . The light rays exiting from the phosphor tube  50  are reflected by the portion of the reflection sheet  20  disposed outer than the light entering surface  19   c  or the portion of the reflection sheet  20  covering the light entering end  190  from the rear side. The light rays reach the light entering end  190  or therearound of the light guide plate  19 . 
     Because the phosphor tube  50  is held with the holder  60  in this embodiment, the wavelength conversion is not performed in spaces formed on the upper outer side and the lower outer side of the phosphor tube  50  corresponding to the holder  60  (by the thickness of the front-side holding wall  61  and by the thickness of the rear-side holding wall  62 ). Therefore, the primary light rays emitted by the LEDs  17  travel toward the end of the reflection sheet  20  without the wavelength conversion by the phosphor tube  50 . 
     As described above, this embodiment includes the complementary color member  223  on the front surface of the end of the reflection sheet  20 . Some of the primary light rays (the blue light rays) are absorbed by the complementary color member  223 . The primary light rays (the blue light rays) exiting from the phosphor tube  50  can be reduced in the area closer to the light entering end  190  of the light guide plate  19 . The whitish light exits from the light entering end  190  of the light guide plate  19  similar to other portions. Therefore, light passing through the optical members  15  and reaching the liquid crystal panel  11  is less likely to have color unevenness. With the complementary color member  223 , the light rays exiting from an end portion of the lighting unit  12 C in which the LEDs  17  are disposed (on the light entering end  190  side of the light guide plate  19 ) are less likely to be tinted blue (the color of the primary light rays from the LEDs  17 ) more than the light rays exiting from the center portion of the lighting unit  12 C. Therefore, the planar light emitted by the lighting unit  12 C including the light rays is less likely to have color unevenness. 
     Seventh Embodiment 
     A seventh embodiment of the present invention will be described with reference to  FIGS. 16 to 21 . 
     A liquid crystal panel  411  (a display panel) included in a liquid crystal display device  410  has a configuration similar to that of the liquid crystal panel  11  in the first embodiment. As illustrated in  FIG. 16 , a backlight unit  412  includes a chassis  414  and an optical member  415  (optical sheets). The chassis  414  has a box-like shape and includes a light exiting portion  414   b  that opens toward the front side (the liquid crystal panel  411  side). The optical member  415  is disposed to cover the light exiting portion  414   b  of the chassis  414 . In the chassis  414 , LEDs  417  that are a light source, an LED board  418  on which the LEDs  417  are mounted, a light guide plate  419 , and a frame  416  are disposed. The light guide plate  419  is configured to direct the light rays from the LEDs  417  to the optical member  415  (the liquid crystal panel  411 ). The frame  416  holds the light guide plate  419  from the front side. 
     The chassis  414  is made of metal. As illustrated in  FIGS. 16 and 17 , the chassis  414  includes a bottom  414   a  and sides  414   c . The bottom  414   a  has a horizontally-long rectangular shape similar to the liquid crystal panel  411 . The sides  414   c  project from outer edges of the bottom  414   a  at an angle, respectively. The chassis  414  has a shallow box-like overall shape with an opening on the front side. The chassis  414  (the bottom  414   a ) is oriented with the longitudinal direction corresponding with the X-axis direction (the horizontal direction) and the transverse direction corresponding with the Y-axis direction (the vertical direction). The frame  416  and a bezel  413  can be fixed to the sides  414   c.    
     As illustrated in  FIG. 16 , the optical member  415  has a horizontally-long rectangular shape in a plan view similar to the liquid crystal panel  411  and the chassis  414 . The optical member  415  is disposed between the liquid crystal panel  411  and the light guide plate  419  to cover a light exiting portion  414   b  of the chassis  414 . The optical member  415  includes a total of four sheets. Specifically, the optical member  415  includes a plate surface wavelength converting sheet  420  (a plate surface wavelength converting member), a micro lens sheet  421 , a prism sheet  422 , and a reflective type polarizing sheet  423 . The plate surface wavelength converting sheet  420  is configured to convert the light rays emitted by the LEDs  417  (the primary light rays) into light rays with different wavelengths (secondary light rays). The micro lens sheet  421  is configured exert isotropic light collecting effects on light rays. The prism sheet  422  is configured to exert anisotropic light collecting effects on light rays. The reflective type polarizing sheet  423  is configured to reflect and polarize light rays. As illustrated in  FIGS. 18 and 19 , the optical member  415  is prepared by placing the plate surface wavelength converting sheet  420 , the micro lens sheet  421 , the prism sheet  422 , and the reflective type polarizing sheet  423  on top of one another in this sequence from the rear side. The peripheral portion of the optical member  415  is placed on the front surface of the frame  416 . 
     As illustrated in  FIG. 16 , the frame  416  includes a horizontally-long frame portion  416   a  (a picture frame portion) extending along the peripheral portions of the light guide plate  419  and the optical member  415 . The frame portion  416   a  holds the peripheral portion of the light guide plate  419  from the front side for about an entire periphery. As illustrated in  FIG. 18 , a frame-side reflection sheet  424  is attached to a back surface of one of long edge sections of the frame portion  416   a , that is, a surface opposed to the light guide plate  419  and the LED board  418  (the LEDs  417 ). The frame-side reflection sheet  424  includes a white surface having high light reflectivity. The frame-side reflection sheet  424  has a length to extend for about an entire length of the long edge section of the frame portion  416   a . The frame-side reflection sheet  424  directly contact the end of the light guide plate  419  on the LED  417  side to collectively cover the end and the LED board  418  from the front side. The frame portion  416   a  of the frame  416  is disposed between the optical member  415  (the plate surface wavelength converting sheet  420 ) and the light guide plate  419 . The frame portion  416   a  supports the peripheral portion of the optical member  415  from the rear side to maintain the optical member  415  and the light guide plate  419  away from each other by the frame portion  416   a . Cushioning members are disposed on back surfaces of three other edge sections of the frame portion  416   a  of the frame  416  other than the long edge section on which the frame-side reflection sheet  424  is disposed (on the light guide plate  419  side). The cushions are made of PORON (registered trademark), for example. The frame  416  includes a liquid crystal panel supporting portion  416   b  that project from the frame portion  416   a  toward the front side and supports the peripheral portion of the liquid crystal panel  411  from the rear side. 
     The LEDs  417  and the LED board  418  on which the LEDs  417  have configurations similar to those of the LEDs  17  and the LED board  18  in the first embodiment. 
     The light guide plate  419  is made of synthetic resin (e.g., acrylic resin such as PMMA) which has a refractive index sufficiently higher than that of the air and is substantially transparent (with high light transmissivity). As illustrated in  FIGS. 16 and 17 , the light guide plate  419  has a horizontally-long rectangular shape similar to the liquid crystal panel  411  and the chassis  414  in the plan view. The light guide plate  419  is formed in a plate shape with a thickness larger than that of the optical member  415 . As illustrated in  FIGS. 18 and 19 , the light guide plate  419  is disposed directly below the liquid crystal panel  411  and the optical member  415  in the chassis  414 . A first long end surface of the long end surfaces of the peripheral surfaces (on the lower side in  FIGS. 16 and 17 , the left side in  FIG. 18 ) is opposed to the LEDs  417  on the LED board  418  disposed one of the long ends of the chassis  414 . The light guide plate  419  receives the light rays emitted by the LEDs  417  in the Y-axis direction, transmits the light rays therethrough, and directs the light rays toward the optical member  415  (the front side). 
     As illustrated in  FIGS. 18 and 19 , the front plate surface of the light guide plate  419  is configured as a light exiting plate surface  419   a  (a light exiting surface) through which the light rays traveling through the light guide plate  419  exit toward the optical member  415  and the liquid crystal panel  411 . The long end surfaces of the peripheral surfaces of the light guide plate  419  adjacent to the plate surface have elongated shapes along the X-axis direction (a direction in which the LEDs  417  are arranged, the longitudinal direction of the LED board  418 ). The first long end surfaces (on the lower side in  FIGS. 16 and 17 ) is disposed to the LEDs  417  (the LED board  418 ) with a predefined distance therebetween. The first long end surface is a light entering end surface  419   b  (a light entering surface) through which the light rays emitted by the LEDs  417  directly enters. Because the light entering end surface  419   b  is opposed to the LEDs  417 , it may be referred to as “an LED opposed end surface (a light source opposed end surface).” The light entering end surface  419   b  is a surface parallel to the X-axis direction and the Z-axis direction and substantially perpendicular to the light exiting plate surface  419   a . The peripheral surfaces of the light guide plate  419  other than the light entering end surface  419   b  (a second long end surface and short end surfaces) are non-light-entering end surfaces  419   d  through which the light rays emitted by the LEDs  417  do not directly enter. Because the non-light-entering surfaces  419   d  are not opposed to the LEDs  417 , they may be referred to as “LED non-opposed end surfaces (light source non-opposed end surfaces).” The non-light-entering end surfaces  419   d  include a non-light-entering opposite end surface  419   d   1  and a pair of non-light-entering lateral end surfaces  419   d   2 . The non-light-entering opposite end surface  419   d   1  is the long end surface of the light guide plate  419  on the opposite side from the light entering end surface  419   b , that is, the second long end surface of the light guide plate  419 . The non-light-entering lateral end surfaces  419   d   2  are the short end surfaces of the light guide plate  419  adjacent to the light entering end surface  419   b  and the non-light-entering opposite end surface. In this embodiment, the LED non-opposed end surfaces are referred to as “the non-light-entering end surfaces  419   d .” However, some light rays may enter therethrough. For example, light rays that leak from the non-light-entering end surface  419   d  to the outside may be reflected by the sides  414   c  of the chassis  414  and returned to the light guide plate  419 . Such light rays may enter the light guide plate  419  through the non-light-entering end surface  419   d.    
     A plate surface reflection sheet  425  (a plate surface reflection member) is disposed on an opposite plate surface  419   c  of the light guide plate  419  on the side opposite from the light exiting plate surface  419   a  to cover the opposite plate surface  419   c  on the rear side. The plate surface reflection sheet  425  is made of synthetic resin (e.g., foamed PET) including a white surface having high light reflectivity. The plate surface reflection sheet  425  reflects light rays traveling through the light guide plate  419  and reach the opposite plate surface  419   c  to direct the light rays to the front side, that is, toward the light exiting plate surface  419   a . The plate surface reflection sheet  425  is disposed to cover substantially an entire area of the opposite plate surface  419   c  of the light guide plate  419 . The plate surface reflection sheet  425  includes an extended portion that overlaps the LED board  418  (the LEDs  417 ) in the plan view. The extended portion and the frame-side reflection sheet  424  on the front side sandwich the LED board  418  (the LEDs  417 ). According to the configuration, the light rays from the LEDs  417  are repeatedly reflected by the reflection sheets  424  and  425  and thus the light entering end surface  419   b  efficiently receives the light rays. A light reflecting pattern (not illustrated) are formed on the opposite plate surface  419   c  of the light guide plate  419  for reflecting the light rays inside the light guide plate  419  toward the light exiting plate surface  419   a  to increase the light rays exiting through the light exiting plate surface  419   a . The light reflecting pattern includes light reflectors. The light reflectors in the light reflecting pattern are light reflecting dots with distribution density that changes according to a distance from the light entering end surface  419   b  (the LEDs  417 ). Specifically, the distribution density of the light reflecting dots of the light reflectors becomes higher as the distance from the light entering end surface  419   b  in the Y-axis direction becomes larger (closer to the non-light-entering opposite end surface  419   d   1 ). The distribution density becomes lower as the distance to the light entering end surface  419   b  becomes smaller (farther from the non-light-entering opposite end surface). According to the configuration, the light rays from the light exiting plate surface  419   a  are evenly distributed within a plane. 
     The plate surface wavelength converting sheet  420  has a configuration similar to that of the phosphor sheet  150  in the first embodiment. As illustrated in  FIG. 20 , the plate surface wavelength converting sheet  420  includes a wavelength converting layer  420   a  (a phosphor film) and a pair of protective layers  420   b  (protective films). The wavelength converting layer  420   a  contains phosphors (wavelength converting substances) for performing the wavelength conversion on the light rays from the LEDs  417 . The protective layers  420   b  sandwich the wavelength converting layer  420   a  in the front-rear direction to protect the wavelength converting layer  420   a . In the wavelength converting layer  420   a , red phosphors and green phosphors are dispersed. The red phosphors emit red light rays (visible light rays in a specific wavelength range to exhibit red) when exited by single color of blue light rays that is excitation light rays. The green phosphors emit green light rays (visible light rays in a specific wavelength range to exhibit blue) when exited by single color of blue light rays that is excitation light rays. The plate surface wavelength converting sheet  420  performs the wavelength conversion on the light rays emitted by the LEDs  417  (the blue light rays, the primary light rays) into secondary light rays (green light rays and red light rays) which exhibits color (yellow) which makes a complementary color pair with the color of light rays emitted by the LEDs  417  (blue). The plate surface wavelength converting sheet  420  is prepared by applying a phosphor layer  420   a   2  including the red phosphors and the green phosphors dispersed therein to a base  420   a   1  (a phosphor base) made of substantially transparent synthetic resin and in a film form. The protective layers  420   b  are made of substantially transparent synthetic resin and in film forms. The protective layers  420   b  have high moisture resistance. 
     More specifically, the phosphors contained in the wavelength converting layer  420   a  are down conversion type (down shifting type) phosphors, excitation wavelengths of which are shorter than fluorescence wavelengths. The down conversion type phosphors convert excitation light rays having shorter wavelengths and high energy levels into fluorescence light rays having longer wavelengths and lower energy levels. In comparison to a configuration in which up conversion type phosphors, the excitation wavelengths of which are longer than the fluorescent wavelengths (e.g., about 28% of quantum efficiency), the quantum efficiency (light conversion efficiency) is higher, which is about 30% to 50%. The phosphors are quantum dot phosphors. The quantum dot phosphors in this embodiment are core-shell type quantum dot phosphors. Each core-shell type quantum dot phosphor includes a quantum dot and a shell that is made of a semiconductor material having a relatively large bandgap and covering the quantum dot. An example of the core-shell type quantum dot phosphor is Lumidot (trademark) CdSe/ZnSj manufactured by Sigma-Aldrich Japan LLC. 
     As illustrated in  FIGS. 18 and 19 , in the edge-light type backlight unit  412  in this embodiment, some of light rays exiting from the light guide plate  419  through the light exiting plate surface  419   a  are not converted to light rays with other wavelengths by the plate surface wavelength converting sheet  420  and such light rays may not be included in exiting light from the backlight unit  412 . The light rays may be retroreflected and returned to the light guide plate  419 , and then included in the exiting light from the backlight unit  412 . The number of times at which the retroreflected light rays are reflected tends to be smaller in the outer area than the center portion of the light guide plate  419 , namely, the number of times at which the retroreflected light rays pass through the plate surface wavelength converting sheet  420  tends to be smaller. Therefore, the retroreflected light rays are less likely to be converted to light rays with other wavelengths by the plate surface wavelength converting sheet  420 . The color of the retroreflected light rays exiting from the peripheral portion of the light guide plate  419  (including the non-light-entering end surfaces  419   d ) are closer to the color of the light from the LEDs  417 , that is, closer to blue in comparison to the color of the retroreflected light rays exiting from the center portion of the light guide plate  419 . Some light rays transmitting through the light guide plate  419  may not exit through the light exiting plate surface  419   a . Some light rays may exit through the non-light-entering end surfaces  419   d . Especially, some of the light rays emitting by the LEDs  417  entering the light guide plate  419  through the light entering end surface  419   b  and transmitting through the light guide plate  419  exit through the non-light-entering surfaces  419   d . Such light rays exhibit blue. The light rays exiting from the peripheral portion of the light guide plate  419  are less likely to be converted to light rays with other wavelengths by the plate surface wavelength converting sheet  420  according to the known technology. If the light rays leak to the outside via the gap between a cushion  426  and the light guide plate  419 , the light exiting from the backlight unit  412  may be bluish only in the peripheral portion. Namely, the color of the light exiting from the peripheral portion of the backlight unit  412  and the color of the light exiting from the center portion of the backlight unit  412  tend to be different. 
     As illustrated in  FIGS. 17 to 19 , the backlight unit  412  in this embodiment includes an end surface wavelength converting sheets  427  (an end surface wavelength converting member) and an end surface reflection sheets  428  (an end surface reflection member). The end surface wavelength converting sheets  427  are disposed to overlap the non-light-entering end surfaces  419   d  of the light guide plate  419 . Each end surface wavelength converting sheet  427  contains phosphors to convert the light rays from the LEDs  417  to light rays with other wavelengths. Each end surface reflection sheet  428  is disposed on a side opposite from the non-light-entering end surface  419   d  side relative to the corresponding end surface wavelength converting sheet  427  to overlap the end surface wavelength converting sheet  427 . The end surface reflection sheets  428  reflect the light rays that have passed through the end surface wavelength converting sheets  427 . Each end surface wavelength converting sheets  427  contains phosphors (green phosphors and red phosphors) which emit secondary light rays exhibiting the same color as or a similar color to the color of the secondary light rays obtained through the wavelength conversion by the plate surface wavelength converting sheet  420 , that is, a color (yellow) which makes a complementary color pair with the color of light rays emitted by the LEDs  417  (the blue light rays, the primary light rays). According to the configuration, the light rays in the peripheral portions of the light guide plate  419  and exiting through the non-light-entering end surfaces  419   d  are less likely to be converted to light rays with other wavelengths by the phosphors contained in the end surface wavelength converting sheets  427 . Some blue light rays emitted by the LEDs  417  and transmitting through the light guide plate  419  after entering the light guide plate  419  through the light entering end surface  419   b  may exit through the non-light-entering end surface  419   d . Some retroreflected light rays are bluish because the number of times at which the light rays are reflected is small (a containing rate of the blue light rays is high). When such light rays pass through the end surface wavelength converting sheets  27 , such light rays are converted to light rays with other wavelengths by the green phosphors and the red phosphors contained in the end surface wavelength converting sheets  427 , that is, to green light rays and red light rays. The light rays passed through the end surface wavelength converting sheets  427  are reflected by the end surface reflection sheets  428  each disposed on the side opposite from the non-light-entering end surface  419   d  relative to the corresponding end surface wavelength converting sheet  427  to overlap the end surface wavelength converting sheet  427  and returned to the end surface wavelength converting sheet  427 . The light rays are converted to light rays with other wavelengths. The light rays enter through the non-light-entering end surfaces  419   d  and exit through the light exiting plate surface  419   a . Even if the light rays are retroreflected for the smaller number of times in the peripheral portion of the light guide plate  419  is small, the light rays are properly converted to light rays with other wavelengths by the end surface wavelength converting sheets  427  after exited through the non-light-entering end surfaces  419   d . Furthermore, the light rays are returned to the light guide plate  419  by the end surface reflection sheets  428  so that the light rays do not exit to the outside through the non-light-entering end surfaces  419   d . According to the configuration, a difference between the color of the light exiting from the center portion of the backlight unit  412  and the color of the light exiting from the peripheral portion of the backlight unit  412  is less likely to occur. Therefore, color unevenness is less likely to occur and high light use efficiency can be achieved. In  FIG. 17 , the end surface wavelength converting sheets  427  and the end surface reflection sheets  428  are indicated with fine dots and coarse dots, respectively, to distinguish the end surface wavelength converting sheets  427  from the end surface reflection sheets  428 . 
     Each end surface wavelength converting sheet  427  has a configuration similar to that of the plate surface wavelength converting sheet  420  described earlier. As illustrated in  FIG. 20 , the end surface wavelength converting sheet  427  includes a wavelength converting layer  427   a  and a pair of protective layers  427   b . The wavelength converting layer  427   a  contains phosphors to convert the light rays from the LEDs  417  to light rays with other wavelengths. The protective layers  427   b  sandwich the wavelength converting layer  427   a  from the front-rear direction to protect the wavelength converting layer  427   a . In  FIG. 20 , detailed cross-sectional configurations of the plate surface wavelength converting sheet  420  and the end surface wavelength converting sheets  427  are commonly illustrated. Reference numbers related to the configuration of the end surface wavelength converting sheets  427  are enclosed in parentheses. As illustrated in  FIGS. 18 and 19 , each end surface reflection sheet  428  has a configuration similar to that of the plate surface reflection sheet  425  described earlier. The end surface reflection sheet  428  is made of synthetic resin (e.g., foamed PET) with a white surface having high light reflectivity. 
     As illustrated in  FIG. 21 , the end surface wavelength converting sheets  427  are bonded to the non-light-entering end surfaces  419   d  of the light guide plate  419  with light guide plate-side adhesive layers  429  and provided integrally with the light guide plate  419 . A surface boundary such as an air layer is less likely to be created between each non-light-entering end surface  419   d  of the light guide plate  419  and the corresponding end surface wavelength converting sheet  427 . Therefore, the light rays exiting through the non-light-entering end surfaces  419   d  are less likely to be improperly refracted before reaching the end surface wavelength converting sheets  427 . Because the light rays exiting from the light guide plate  419  through the non-light-entering end surfaces  419   d  properly pass through the end surface wavelength converting sheets  427 , high wavelength converting efficiency can be achieved. This is preferable for reducing the color unevenness. The end surface wavelength converting sheets  427  are bonded to the end surface reflection sheets  428  with end surface reflection sheet-side adhesive layers  430  (end surface reflection member-side adhesive layers) and provided integrally with the end surface reflection sheets  428 . A surface boundary such as an air layer is less likely to be created between each end surface wavelength converting sheet  427  and the corresponding end surface reflection sheet  428 . Therefore, the light rays exiting through the end surface wavelength converting sheets  427  are less likely to be improperly refracted before reaching the end surface reflection sheets  428 . Because the light rays transmitting through the end surface wavelength converting sheets  427  are properly reflected by the end surface reflection sheets  428 , high light use efficiency can be achieved. 
     As illustrated in  FIGS. 17 to 19 , each end surface wavelength converting sheets  427  is disposed to cover the corresponding non-light-entering end surface  419   d  of the light guide plate  419  for the entire length of the non-light-entering end surface  419   d  in the height direction (the Z-axis direction) and for the entire length of the non-light-entering end surface  419   d  in the length direction (the X-axis direction or the Y-axis direction). Namely, each end surface wavelength converting sheet  427  has an area about the same as an area of the corresponding non-light-entering end surface  419   d  or larger. Each end surface reflection sheet  428  is disposed to cover the corresponding end surface wavelength converting sheet  427  for the entire length of the end surface wavelength converting sheet  427  in the width direction (the Z-axis direction) and for the entire length of the end surface wavelength converting sheet  427  in the length direction (the X-axis direction or the Y-axis direction). Namely, each end surface reflection sheet  428  has an area about the same as the area of the end surface wavelength converting sheet  427  or larger. 
     As illustrated in  FIGS. 17 to 19 , three end surface wavelength converting sheets  427  are disposed to a non-light-entering opposite end surface  419   d   1  and the non-light-entering lateral end surfaces  419   d   2  of the non-light-entering end surfaces  419   d  of the light guide plate  419 , respectively, on the outer sides. The end surface wavelength converting sheets  427  include an opposite end surface wavelength converting sheet  427 A and lateral end surface wavelength converting sheets  427 B. The opposite end surface wavelength converting sheet  427 A overlaps the non-light-entering opposite end surface  419   d   1 . The lateral end surface wavelength converting sheets  427 B overlap the non-light-entering lateral end surfaces  419   d   2 , respectively. Three end surface reflection sheets  428  are disposed to overlap the end surface wavelength converting sheets  427 , respectively, on the outer sides. 
     As illustrated in  FIGS. 17 to 19 , the end surface wavelength converting sheets  427  are disposed over the entire areas of the non-light-entering end surfaces  419   d  of the light guide plate  419 . Furthermore, the end surface reflection sheets  428  are disposed over the entire areas of the end surface wavelength converting sheets  427 . Some of the light rays transmitting through the light guide plate  419  exit through the non-light-entering opposite end surface  419   d   1  of the non-light-entering end surfaces  419   d  of the light guide plate  419  and some of the light rays exit through the non-light-entering lateral end surfaces  419   d   2 . According to the configuration, the light rays exiting through the non-light-entering opposite end surface  419   d   1  and the non-light-entering lateral end surfaces  419   d   2  are efficiently converted to light rays with other wavelengths by the phosphors in the end surface wavelength converting sheets  427 . The end surface reflection sheets  428  are disposed on the side opposite from the non-light-entering opposite end surface  419   d   1  side relative to the end surface wavelength converting sheets  427  that are disposed over the non-light-entering opposite end surface  419   d   1 . Therefore, the light rays exiting through the non-light-entering opposite end surface  419   d   1  and the non-light-entering lateral end surfaces  419   d   2  are reflected by the end surface reflection sheets  428  and returned to the light guide plate  419 . This configuration is preferable for reducing the color unevenness. 
     Next, functions of this embodiment having the configuration will be described. When the liquid crystal display device  410  having the configuration described above is turned on, the driving of the liquid crystal panel  411  is controlled by the panel controller circuit on the control circuit board, which is not illustrated. The LED driver circuit on the LED driver circuit board, which is not illustrated, supplies driving power to the LEDs  417  on the LED board  418  to control the driving of the LEDs  417 . The light from the LEDs  417  are guided by the light guide plate  419  to travel to the liquid crystal panel  411  via the optical member  415 . With the light, a specific image is displayed on the liquid crystal panel  411 . Functions of the backlight unit  412  will be described in detail. 
     When the LEDs  417  are turned on, the light rays emitted by the LEDs  417  enter the light guide plate  419  through the light entering end surface  419   b  as illustrated in  FIG. 18 . The space provided between the LEDs  417  and the light entering end surface  419   b  is closed with the frame-side reflection sheet  424  on the front side and the extended portion of the plate surface reflection sheet  425  on the rear side. Therefore, the light rays are repeatedly reflected by portions of the reflection sheets  424  and  425  opposed to each other. The light rays enter through the light entering end surface  419   b  with efficiency. The light rays entering through the light entering end surface  419   b  may be totally reflected by the interface between the light guide plate  419  and the air layer on the outside or reflected by the plate surface reflection sheet  425  to transmit through the light guide plate  419 . The light rays transmitting through the light guide plate  419  are reflected by the light reflectors of the light reflecting pattern to different directions. The light rays enter the light exiting plate surface  419   a  with incidence smaller than the critical angle. More light rays exit through the light exiting plate surface  419   a . The optical effects are exerted on the light rays exiting from the light guide plate  419  through the light exiting plate surface  419   a  and passing through the optical members  415 . The light rays on which the optical effects are exerted are applied to the liquid crystal panel  411 . Some of the light rays are retroreflected by the optical member  415  and returned to the light guide plate  419 . The retroreflected light rays exit through the light exiting plate surface  419   a  and provided as emitting light of the backlight unit  412 . 
     Next, optical effects of the optical member  415  will be described in detail. The blue light rays exiting from the light guide plate  419  through the light exiting plate surface  419   a  are converted into the green light rays and the red light rays (secondary light) by the green phosphors and the red phosphors contained in the plate surface wavelength converting sheet  420  that is disposed on the front side relative to the light exiting plate surface  419   a  with the distance therebetween as illustrated in  FIG. 18 . With the green light rays and the red light rays obtained through the wavelength conversion, that is, the yellow light rays (secondary light) and the blue light from the LEDs  417  (primary light), light rays in substantially white are obtained. Light collecting effects are isotropically exerted on the blue light rays (primary light) from the LEDs  417  and the green light rays and the red light rays obtained through the wavelength conversion (secondary light) with respect to the X-axis direction and the Y-axis direction (isotropic light collecting effects) by the micro lens sheet  421 . Then, light collecting effects are selectively exerted on the light rays with respect to the Y-axis direction by the prism sheet  422  (anisotropic light collecting effects). The light rays exiting from the prism sheet  422  to the reflective type polarizing sheet  423  and specific polarized light rays (p-wave) are selectively passed to exit toward the liquid crystal panel  411 . Different specific polarized light rays (s-wave) are selectively reflected to the rear side. The s-wave reflected by the reflective type polarizing sheet  423  or the light rays reflected to the rear side without light collecting effects by the prism sheet  422  or the micro lens sheet  421  are returned to the light guide plate  419 . While transmitting through the light guide plate  419 , the light rays are reflected again by the plate surface reflection sheet  425  to exit again through the light exiting plate surface  419   a  to the front side. 
     As illustrated in  FIGS. 18 and 19 , the light rays transmitting through the light guide plate  419  include the retroreflected light rays that are reflected after exiting through the light exiting plate surface  419   a  and returned to the light guide plate  419 . The number of reflection of the retroreflected light rays, that is, the number of times at which the retroreflected light rays pass through the plate surface wavelength converting sheet  420  tends to be smaller in the center portion of the light guide plate  419  than the peripheral portion of the light guide plate  419 . Therefore, the retroreflected light rays exiting from the peripheral portion of the light guide plate  419  (including the peripheral surfaces) tend to be bluish closer to the color of the blue light from the LEDs  417  in comparison to the retroreflected light exiting from the center portion of the light guide plate  419 . Some of the blue light rays emitted by the LEDs  417  and transmitting through the light guide plate  419  (primary light) may not exit through the light exiting plate surface  419   a  and may exit the light guide plate  419  through the non-light-entering end surfaces  419   d  of the peripheral surfaces. 
     As illustrated in  FIG. 21 , the backlight unit  412  in this embodiment includes the end surface wavelength converting sheets  427  and the end surface reflection sheets  428 . The end surface wavelength converting sheets  427  are disposed over the non-light-entering end surfaces  419   d  of the light guide plate  419 . The end surface wavelength converting sheets  427  contain the phosphors (the green phosphors and the red phosphors) which emit the secondary light (the green light and the blue light). The secondary light exhibits the color the same as or similar to the secondary light obtained through the wavelength conversion by the plate surface wavelength converting sheet  420 , that is, the color (yellow) which makes the complementary color pair with the color of the light emitted by the LEDs  417  (the blue light, the primary color). The end surface reflection sheets  428  are disposed on the sides opposite from the non-light-entering end surface  419   d  sides relative to the end surface wavelength converting sheets  427  over the end surface wavelength converting sheets  427 . The wavelength of the light rays in the peripheral portion of the light guide plate  419  and exiting through the non-light-entering end surfaces  419   d  can be converted by the phosphors contained in the end surface wavelength converting sheets  427 . Some of the blue light rays emitted by the LEDs  417  enter the light guide plate  419  through the light entering end surface  419   b , transmit through the light guide plate, and exit through the non-light-entering end surfaces  419   d . Some of the retroreflected light rays are bluish (high blue light component rate) because the number of times of the reflection is small. When passing through the end surface wavelength converting sheets  427 , those light rays are converted to the green light rays and the red light rays (the light rays in the color that makes the complementary color pair with the color of the primary light rays, the light rays in the color the same as or similar to the color of the secondary light rays regarding the plate surface wavelength converting sheet  420 ) by the green phosphors and the red phosphors contained in the end surface wavelength converting sheets  427 . 
     The light rays passed through the end surface wavelength converting sheets  427  are reflected by the end surface reflection sheets  428  disposed on the opposite side from the non-light-entering end surface  419   d  sides relative to the end surface wavelength converting sheets  427  over the end surface wavelength converting sheets  427 . The light rays are returned to the end surface wavelength converting sheets  427  and the wavelengths of the light rays are converted. The light rays enter through the non-light-entering end surfaces  419   d  and exit through the light exiting plate surface  419   a . Even though the number of reflection of the light rays in the peripheral portion of the light guide plate  419  when they are retroreflected is small, the wavelength of the light rays are properly converted by the end surface wavelength converting sheets  427  after exiting through the non-light-entering end surfaces  419   d . Furthermore, the light rays are returned to the light guide plate  419  by the end surface reflection sheets  428  so that the light rays exiting through the non-light-entering end surfaces  419   d  do not exit to the outside. Even if the light rays exiting through the non-light-entering end surfaces  419   d  leak to the outside through the gap between the cushion  426  and the light guide plate  419 , the difference in color between the light exiting from the center portion of the backlight unit  412  and the light exiting from the peripheral portion of the backlight unit  412  is less likely to occur. This configuration is preferable for reducing the color unevenness. 
     As illustrated in  FIG. 21 , the end surface wavelength converting sheets  427  are bonded to the non-light-entering end surfaces  429   d  of the light guide plate  419  via the light guide plate-side adhesive layers  429 . The end surface wavelength converting sheets  427  are provided integrally with the light guide plate  419 . The non-light-entering end surfaces  419   d  of the light guide plate  419  and the end surface wavelength converting sheets  427  are less likely to have interfaces such as air layers therebetween. Therefore, the light rays exiting through the non-light-entering end surfaces  419   d  are less likely to be improperly refracted before reaching the end surface wavelength converting sheets  427 . The light rays exiting from the light guide plate  419  through the non-light-entering end surfaces  419   d  are more likely to pass through the end surface wavelength converting sheets  427 . Higher wavelength converting efficiency can be achieved. This configuration is preferable for reducing the color unevenness. The end surface wavelength converting sheets  427  are bonded to the end surface reflection sheets  428  via the end surface reflection sheet-side adhesive layers  430  (the end surface reflecting member-side adhesive). The end surface wavelength converting sheets  427  are provided integrally with the end surface reflection sheets  428 . The end surface wavelength converting sheets  427  and the end surface reflection sheets  428  are less likely to have interfaces such as air layers therebetween. The light rays passing through the end surface wavelength converting sheets  427  are less likely to be improperly refracted before reaching the end surface reflection sheets  428 . The light rays passing through the end surface wavelength converting sheets  427  are more likely to be reflected by the end surface reflection sheets  428 . Higher wavelength converting efficiency can be achieved. 
     Furthermore, as illustrated in  FIGS. 18 and 19 , the entire areas of the non-light-entering end surfaces  419   d  of the light guide plate  419  (the non-light-entering opposite end surface  419   d   1  and a pair of the non-light-entering lateral end surfaces  419   d   2 ) are covered with the end surface wavelength converting sheets  427 . The entire areas of the end surface wavelength converting sheets  427  are covered with the end surface reflection sheets  428 . Therefore, the wavelengths of the light rays exiting through the non-light-entering end surfaces  419   d  are converted with high wavelength converting efficiency and returned to the light guide plate  419 . This configuration is preferable for further reducing the color unevenness. 
     Eighth Embodiment 
     An eighth embodiment of the present invention will be described with reference to  FIG. 22 . The eighth embodiment includes a plate surface reflection sheet  4125  and an end surface reflection sheets  4128  that are integrated. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 22 , the end surface reflection sheets  4128  are integrally formed with the plate surface reflection sheet  4125  in this embodiment. Namely, the end surface reflection sheets  4128  project at about right angle from outer edges of the plate surface reflection sheet  4125  toward the front side. The end surface reflection sheets  4128  are disposed over end surface wavelength converting sheets  4127  that are over non-light-entering end surfaces  4119   d  on the outer sides (the sides opposite from the non-light-entering end surfaces  4119   d ). The plate surface reflection sheet  4125  includes extended portions that extend outward from the non-light-entering end surfaces  4119   d  of a light guide plate  4119  in an unfolded state (before bending the end surface reflection sheets  4128 ). The extended portions are configured as the end surface reflection sheets  4128 . Because the end surface reflection sheets  4128  and the plate surface reflection sheet  4125  are provided as a single component, the number of components can be reduced. Furthermore, because the end surface reflection sheets  4128  and the plate surface reflection sheet  4125  are less likely to have gaps therebetween, leak of light from the light guide plate  4119  is less likely to occur. The end surface wavelength converting sheets  4127  are bonded to the end surface reflection sheets  4128  (the extended portions of the plate surface reflection sheet  4125 ) via end surface reflection sheet-side adhesive layers  4130  and bonded to the non-light-entering end surfaces  4119   d  of the light guide plate  4119  via light guide plate-side adhesive layers  4129 . 
     As described above, in this embodiment, the end surface reflection sheets  4128  are integrally formed with the plate surface reflection sheet  4125 . Because the end surface reflection sheets  4128  and the plate surface reflection sheet  4125  are provided as a single component, the number of components can be reduced. Furthermore, the end surface reflection sheets  4128  and the plate surface reflection sheet  4125  are less likely to have gaps therebetween. Therefore, leak of light from the light guide plate  4119  is less likely to occur. 
     Ninth Embodiment 
     A ninth embodiment of the present invention will be described with reference to  FIG. 23 . The ninth embodiment includes end surface wavelength converting members  431  instead of the end surface wavelength converting sheets  4127  in the eighth embodiment. Configurations, functions, and effects similar to those of the eighth embodiment will not be described. 
     As illustrated in  FIG. 23 , the end surface wavelength converting members  431  in this embodiment are directly applied to non-light-entering end surfaces  4219   d  of a light guide plate  4219  and integrally provided with the light guide plate  4219 . The end surface wavelength converting members  431  are made of fluorescent paint (fluorescent dispersion liquid) containing red phosphors and green phosphors dispersed in a binder. The red phosphors and the green phosphors emit red light and green light, respectively, when excited by a single color of blue light from LEDs that are not illustrated. Specifically, the fluorescent paint is applied to the non-light-entering end surfaces  4219   d  of the light guide plate  4219  with substantially even thickness. The end surface wavelength converting members  431  are integrally formed with the non-light-entering end surfaces  4219   d  of the light guide plate  4219  without the light guide plate-side adhesive layers  429  (see  FIG. 21 ) in the seventh embodiment or the interfaces such as the air layers. The end surface wavelength converting members  431  are bonded to end surface reflection sheets  4228  via end surface reflection sheet-side adhesive layers  4230 . The following phosphors may be preferable for the phosphors contained in the fluorescent paint of the end surface wavelength converting members  431 . The green phosphor may be (Ca, Sr, Ba) 3 SiO 4 :Eu 2+ , β-SiAlON:Eu, Ca 3 Sc 2 Si 3 O 12 :Ce 3+ . The red phosphor may be (Ca, Sr, Ba) 2 SiO 5 N 8 :Eu 2+ , CaAlSiN 3 :Ce 2+  or a complex fluoride fluorescent material (e.g., manganese-activated potassium fluorosilicate (K 2 TiF 6 )). 
     As described above, in this embodiment, the end surface wavelength converting members  431  are applied to the non-light-entering end surfaces  4219   d  of the light guide plate  4219 . According to the configuration, the end surface wavelength converting members  431  and the non-light-entering end surfaces  4219   d  of the light guide plate  4219  are integrated without interfaces such as the air layers. 
     Tenth Embodiment 
     A tenth embodiment of the present invention will be described with reference to  FIG. 24 . The tenth embodiment includes end surface wavelength converting members arranged differently from those of the ninth embodiment. Configurations, functions, and effects similar to those of the ninth embodiment will not be described. 
     As illustrated in  FIG. 24 , end surface wavelength converting members  4331  in this embodiment are directly applied to end surface reflection sheets  4328  and provided integrally with the end surface reflection sheets  4328 . Specifically, the end surface wavelength converting members  4331  made of fluorescent paint are applied to surfaces of the end surface reflection sheets  4328  with substantially even thickness. The end surface wavelength converting members  4331  and the end surface reflection sheets  4328  are integrated without the end surface reflection sheet-side adhesive layers  430  (see  FIG. 21 ) in the seventh embodiment or the air layers. Furthermore, the end surface wavelength converting members  4331  are bonded to a non-light-entering end surfaces  4319   d  of a light guide plate  4319  via light guide plate-side adhesive layers  4329 . In comparison to the configuration of the ninth embodiment, the end surface wavelength converting members  4331  are more easily set. 
     As described above, in this embodiment, the end surface wavelength converting members  4331  are applied to the surfaces of the end surface reflection sheets  4328 . According to the configuration, the end surface wavelength converting members  4331  and the end surface reflection sheets  4328  can be integrated without the interfaces such as the air layers. In comparison to a configuration in which the end surface wavelength converting members are applied to the non-light-entering end surfaces  4319   d  of the light guide plate  4319  to integrate, the end surface wavelength converting members  4331  are more easily set. 
     Eleventh Embodiment 
     An eleventh embodiment of the present invention will be described with reference to  FIG. 25 . The eleventh embodiment has a configuration including the configuration of the tenth embodiment combined into the configuration of the eighth embodiment. Configurations, functions, and effects similar to those of the eighth and the tenth embodiments will not be described. 
     As illustrated in  FIG. 25 , end surface reflection sheets  4228  in this embodiment are integrally formed with a plate surface reflection sheet  4425 . Furthermore, end surface wavelength converting members  4431  are directly applied to surfaces of the end surface reflection sheets  4228  such that the end surface reflection sheets  4228  and the end surface wavelength converting members  4431  are integrated. 
     Twelfth Embodiment 
     A twelfth embodiment of the present invention will be described with reference to  FIG. 26 . The twelfth embodiment includes end surface wavelength converting sheets and the end surface reflection sheets that are integrated, which is different from the seventh embodiment. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 26 , end surface wavelength converting sheets  4527  include opposite end surface wavelength converting sheet  4527 A and a pair of lateral end surface wavelength converting sheets  4527 B that continue from one another to be provided as a signal component. An opposite end surface wavelength converting sheet  452 A is over a non-light-entering opposite end surface  4519   d   1  of a light guide plate  4519 . The lateral end surface wavelength converting sheets  4527 B are over non-light-entering lateral end surfaces  4519   d   2  of a light guide plate  4529 , respectively. Namely, the end surface wavelength converting sheets  4527  are disposed to cover entire areas of the non-light-entering end surfaces  4519   d  that extend along in a peripheral direction of the light guide plate  4519 . A end surface reflection sheets  4528  include an opposite end surface reflection sheet  4528 A and a pair of lateral end surface reflection sheets  4528 B. The opposite end surface reflection sheet  4528 A is over the opposite end surface wavelength converting sheet  4527 A. The lateral end surface wavelength converting sheets  4527 B are over the lateral end surface wavelength converting sheets  4527 B, respectively. The opposite end surface reflection sheet  4528 A and the lateral end surface wavelength converting sheets  4527 B continue from one another to be provided as a single component. Namely, the end surface reflection sheets  4528  are disposed to cover entire areas of the end surface wavelength converting sheets  4527  that extend along the peripheral direction of the light guide plate  4519 . 
     Thirteenth Embodiment 
     A thirteenth embodiment of the present invention will be described with reference to  FIG. 27 . The thirteenth embodiment includes the different number of end surface wavelength converting sheets from that of the seventh embodiment. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 27 , end surface wavelength converting sheets  4627  in this embodiment are disposed to overlap only non-light-entering lateral end surfaces  4619   d   2  but not to overlap a non-light-entering opposite end surface  4619   d   1  of non-light-entering end surfaces  4619   d  of a light guide plate  4619 . The end surface wavelength converting sheets  4627  in this embodiment include a pair of lateral end surface wavelength converting sheets  4627 B. An opposite end surface reflection sheet  4628 A of end surface reflection sheets  4628  is bonded to the non-light-entering opposite end surface  4619   d   1  of the light guide plate  4619  with an adhesive layer that is not illustrated. 
     Fourteenth Embodiment 
     A fourteenth embodiment of the present invention will be described with reference to  FIG. 28 . The fourteenth embodiment includes the different number of an end surface wavelength converting sheet and the different number of an end surface reflection sheet from those of the seventh embodiment. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 28 , end surface wavelength converting sheets  4727  in this embodiment are disposed over non-light-entering opposite end surface  4719   d   1  but not over non-light-entering lateral end surfaces  4719   d   2 . An end surface wavelength converting sheet  4727  in this embodiment includes only an opposite end surface wavelength converting sheet  4727 A. An end surface reflection sheet  4728  includes only an opposite end surface reflection sheet  4728 A disposed over the opposite end surface wavelength converting sheet  4727 A. 
     Fifteenth Embodiment 
     A fifteenth embodiment of the present invention will be described with reference to  FIG. 29 . The fifteenth embodiment includes LEDs and an LED board arranged differently from those of the seventh embodiment. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 29 , a backlight unit  4812  in this embodiment includes LEDs  4817  and an LED board  4818  disposed on a first short edge side of a chassis  4814  (on the left in  FIG. 29 ). Specifically, the LED board  4818  is attached to a sidewall  4814   c  of sidewalls  4814   c  of the chassis  4814  on the first short edge side (on the left in  FIG. 29 ). The LEDs  4817  are mounted on the LED board  4818 . The LEDs  4817  are opposed to a first short end surface of peripheral surfaces of a light guide plate  4819 . In this embodiment, the first short end surface of the peripheral surfaces of the light guide plate  4819  is configured as a light entering end surface  4819   b  through which light from the LEDs  4817  enters. Other three end surfaces (a second short end surface and a pair of long end surfaces) are configured as non-light-entering end surfaces  4819   d . Among the non-light-entering end surfaces  4819   d , the second short end surface is configured as a non-light-entering opposite end surface  4819   d   1  that is arranged on a side opposite from the light entering end surface  4819   b . The long end surfaces are configured as non-light-entering lateral end surfaces  4819   d   2  that are adjacent to a light entering end surfaces  4819   b.    
     End surface wavelength converting sheets  4827  include an opposite end surface wavelength converting sheet  4827 A and a pair of lateral end surface wavelength converting sheets  4827 B. The opposite end surface wavelength converting sheet  4827 A is disposed over the second short end surface of the peripheral surfaces of the light guide plate  4819 , that is, the non-light-entering opposite end surface  4819   d   1 . The lateral end surface wavelength converting sheets  4827 B is disposed over the long end surfaces, that is, the non-light-entering lateral end surfaces  4819   d   2 . End surface reflection sheets  4828  include an opposite end surface reflection sheet  4828 A and a pair of opposite end surface reflection sheets  4828 B. The opposite end surface reflection sheet  4828 A is disposed over the opposite end surface wavelength converting sheet  4827 A on the outer side. The opposite end surface reflection sheets  4828 B is disposed over the lateral end surface wavelength converting sheets  4827 B on the outer sides. According to the configuration, the same functions and effects as those of the seventh embodiment are achieved. 
     Sixteenth Embodiment 
     A sixteenth embodiment of the present invention will be described with reference to  FIG. 30 . The sixteenth embodiment includes a double-edge lighting type backlight unit, which is different from the seventh embodiment. Configurations, functions, and effects similar to those of the seventh embodiment will not be described. 
     As illustrated in  FIG. 30 , a backlight unit  4912  in this embodiment includes LEDs  4917  and LED boards  4918  are disposed on long sides of a chassis  4914 . Specifically, LED boards  4918  are attached to a first long sidewall  4914   c  of the chassis  4914  (on the lower side in  FIG. 30 ) and a second long sidewall  4914   c  (on the upper side in  FIG. 30 ). The LEDs  4917  mounted on the LED boards  4918  are opposed to long end surfaces of peripheral surfaces of a light guide plate  4919 . In this embodiment, the long end surfaces of the peripheral surfaces of the light guide plate  4919  are configured as light entering end surfaces  4919   b  through which light from the LEDs  4917  enters. Short end surfaces are configured as non-light-entering end surfaces. Non-light-entering end surfaces  4919   d  in this embodiment do not include the non-light-entering opposite end surface  419   d   1  in the seventh embodiment (see  FIG. 17 ). The non-light-entering end surfaces  4919   d  include only non-light-entering lateral end surfaces  4919   d   2  adjacent to the light entering end surfaces  4919   b . In the backlight unit  4912  in this embodiment, the light guide plate  4919  is sandwiched between the LED boards  4918  on which the LEDs  4917  are mounted from the sides with respect to the short-side direction (the Y-axis direction). Namely, the backlight unit  4912  is a double-edge lighting type backlight unit. 
     End surface wavelength converting sheets  4927  do not include the opposite end surface wavelength converting sheet  427 A in the seventh embodiment (see  FIG. 17 ). The end surface wavelength converting sheets  4927  include only a pair of lateral end surface wavelength converting sheets  4927 B. The lateral end surface wavelength converting sheets  4927 B are disposed over the short end surfaces, that is, the non-light-entering lateral end surfaces  4919   d   2 . End surface reflection sheets  4928  do not include an opposite end surface reflecting sheets  428 A in the seventh embodiment (see  FIG. 17 ). The end surface reflection sheets  4928  include only a pair of opposite end surface reflection sheets  4928 B. The opposite end surface reflection sheets  4928 B are disposed over the lateral end surface wavelength converting sheets  4927 B on the outer sides. According to the configuration, functions and effects similar to those of the seventh embodiment are achieved. 
     Seventeenth Embodiment 
     A seventeenth embodiment of the present invention will be described with reference to  FIG. 31 . The seventeenth embodiment includes LEDs and LED boards arranged differently from those of the sixteenth embodiment. Configurations, functions, and effects similar to those of the sixteenth embodiment will not be described. 
     As illustrated in  FIG. 31 , a backlight unit  41012  in this embodiment includes LEDs  41017  and LED boards  41018  disposed on short sides of a chassis  41014 . Specifically, LED boards  41018  are attached to a first short sidewall  41014   c  of the chassis  41014  (on the left side in  FIG. 31 ) and a second short sidewall  41014   c  (on the right side in  FIG. 31 ). The LEDs  41017  mounted on the LED boards  41018  are opposed to short end surfaces of peripheral surfaces of the light guide plate  41019 . The short end surfaces of the peripheral surfaces of the light guide plate  41019  are configured as light-entering end surfaces  41019   b  through which light from the LEDs  41017  enters. The long end surfaces are configured as non-light-entering end surfaces  41019   d  (a pair of non-light-entering lateral end surfaces  41019   d   2 ). In the backlight unit  41012  in this embodiment, the light guide plate  41019  is sandwiched between the LED boards  41018  on which the LEDs  41017  are mounted from the sides with respect to the long-side direction along the long sides of a light guide plate  41010  (the X-axis direction). Namely, the backlight unit  41012  is a double-edge lighting type backlight unit. 
     End surface wavelength converting sheets  41027  include only a pair of lateral end surface wavelength converting sheets  41027 B. The lateral end surface wavelength converting sheets  41027 B are disposed over the long end surfaces, that is, the non-light-entering lateral end surfaces  41019   d   2 . End surface reflection sheets  41028  include only a pair of opposite end surface reflection sheets  41028 B. The opposite end surface reflection sheets  41028 B are disposed over the lateral end surface wavelength converting sheets  41027 B on the outer sides. According to the configuration, functions and effects similar to those of the seventh embodiment are achieved. 
     Eighteenth Embodiment 
     An eighteenth embodiment of the present invention will be described with reference to  FIG. 32 . The eighteenth embodiment includes LEDs and LED boards, the numbers of which are different from those of the sixteenth embodiment. Configurations, functions, and effects similar to those of the sixteenth embodiment will not be described. 
     As illustrated in  FIG. 32 , a backlight unit  41112  in this embodiment includes LEDs  41117  and LED boards  41118  disposed on long sides and a first short side (on the left side in  FIG. 32 ) of a chassis  41114 . Specifically, the LED boards  41118  are attached to a first long sidewall  41114   c  (on the lower side in  FIG. 32 ), a second long sidewall  41114   c  (on the upper side in  FIG. 32 ), and a first short sidewall  4111   c  of the chassis  41114 . The LEDs  41117  mounted on the LED boards  41118  are opposed to long end surfaces and a first short end surfaces of peripheral surfaces of a light guide plate  41119 . In this embodiment, a non-light-entering end surface  41119   d  could be a non-light-entering opposite end surface  41119   d   1  relative to a short light entering end surface  41119   b  and could be a non-light-entering lateral end surface  41119   d   2  relative to the long light entering end surfaces  41119   b . Only one end surface wavelength converting sheet  41127  is disposed over the non-light-entering end surface  41119   d . Only one end surface reflection sheet  41128  is disposed over the end surface wavelength converting sheet  41127  on the outer side. The backlight unit  41112  in this embodiment is a triple-edge lighting type backlight unit in which light entering the light guide plate  41119  is provided by the LEDs  41117  mounted on three LED boards  41118  that are disposed along three sides of the light guide plate  41119 . 
     Nineteenth Embodiment 
     A nineteenth embodiment of the present invention will be described with reference to  FIGS. 33 to 38 . 
     A liquid crystal display device  510  according to this embodiment has a horizontally-long rectangular overall shape that extends in horizontal direction. As illustrated in  FIG. 33 , the liquid crystal display device  510  includes a liquid crystal panel  511 , a lighting unit  512  (a backlight unit), and a bezel  513 . The liquid crystal panel  511  is a display panel. The lighting unit is an external light source for supplying light to the liquid crystal panel  511 . The bezel  513  has a frame shape and holds the liquid crystal panel  511  and the lighting unit  512 . The liquid crystal panel  511  has a configuration similar to that of the liquid crystal panel  11  in the first embodiment. 
     As illustrated in  FIG. 33 , the lighting unit  512  includes a chassis  514 , optical members  515 , a frame  516 , LEDs  517 , an LED board  518 , a light guide plate  519 , a reflection sheet  520 , and complementary color members  523 . The chassis  514 , the optical members  515 , the frame  516 , the LEDs  517 , the LED board  518 , and the light guide plate  519  have configurations similar to those of the chassis  14 , the optical member  15 , the frame  16 , the LEDs  17 , the LED board  18 , and the light guide plate  19  in the first embodiment. The complementary color members  523  are disposed between ends of the light guide plate  519  and the reflection sheet  520 . 
     A front surface  519   a  of the light guide plate  519  is configured as a light exiting surface  519   a  through which light exits toward the liquid crystal panel  511 . The optical members  515  are disposed between the light exiting surface  519   a  and the liquid crystal panel  511  and supported by the frame  516 . A first long end surface of the light guide plate  519  is configured as a light entering surface  519   c  through which light from the LEDs  517  enters. An end of the light guide plate  519  including the light entering surface  519   c  may be referred to as a light entering end  5190 . 
     A second long end surface  519   d  of the light guide plate  519 , two short end surfaces  519   e  and  519   f  of the light guide plate  519  are not opposed to a light source (the LEDs  517 ) and thus they may be referred to as “light source non-opposed surfaces.” The light source non-opposed surface (the long end surface  519   d ) opposite from the light entering surface  519   c  may be referred to as “an opposite-side light source non-opposed surface.” In this specification, ends  5191 ,  5192 , and  5193  of the light guide plate including the light source non-opposed surfaces may be referred to as “light source non-opposed ends” and an end  5191  of the light guide plate  519  including the opposite-side light source non-opposed surface may be referred to as “an opposite-side light source non-opposed portion.” Furthermore, the ends  5192  and  5193  of the light guide plate including adjacent end surfaces  519   e  and  519   f  (short end surfaces) which are the light source non-opposed surfaces adjacent to the light entering surface  519   c  may be referred to as “light source non-opposed adjacent ends). 
     The optical members  515  have horizontally-long substantially rectangular shape similar to the liquid crystal panel  511  in a plan view. Examples (optical sheets) of the optical members  515  include a diffuser sheet, a lens sheet, and a reflective type polarizing sheet. The optical members  515  in this embodiment includes a phosphor sheet  5150  containing quantum dot phosphors (an example of a wavelength converting member) as a necessary component (an optical sheet). The phosphor sheet  5150  is disposed the closest to the light exiting surface  519   a  among the optical members  515 . The phosphor sheet  5150  has a substantially rectangular shape similar to the liquid crystal panel  511  in the plan view. The phosphor sheet  5150  passes some light rays from the LEDs  517  in the thickness direction and absorbs some light rays from the LEDs  517 . The phosphor sheet  5150  converts the absorbed light rays into light rays in a different wavelengths range (secondary light) and releases the light rays. The phosphor sheet  5150  may include a wavelength converting layer, supporting layers and barrier layers. The supporting layers sandwich the wavelength converting layer. The barrier layers are over the respective supporting layers on the outer sides to sandwich the wavelength converting layer and the supporting layers. 
     The wavelength converting layer contains an acrylic resin as a binder resin and the quantum dot phosphors (an example of phosphors) dispersed in the acrylic resin. The acrylic resin is transparent and has light transmissivity. The acrylic resin has adhesiveness for the supporting layers. The supporting layers are sheet shaped members made of polyester resin such as polyethylene terephthalate (PET). The quantum dot phosphors are phosphors having high quantum efficiency. The quantum dot phosphors include semiconductor nanocrystals (e.g., diameters in a range from 2 nm to 10 nm) which tightly confine electrons, electron holes, or excitons with respect to all direction of a three dimensional space to have discrete energy levels. A peak wavelength of emitting light (a color of emitting light) is freely selectable by changing the dot size. 
       FIG. 36  is a plan view schematically illustrating a positional relationship between the LEDs  517  and the light guide plate  519  viewed from the back side. As illustrated in  FIG. 36 , a light reflecting and scattering pattern  522  is formed on a back surface  519   b  of the light guide plate  519 . The light reflecting and scattering pattern  522  includes dots  522   a  each having light reflectivity and light scattering properties. Each dot  522   a  is a white coating formed in a circular shape. The dots  522   a  are formed on the back surface  519   b  of the light guide plate  519  by a known method such as a printing technology. In the light reflecting and scattering pattern  522 , the dots  522   a  closer to the LEDS  517  (i.e., closer to the light entering surface  519   c ) are smaller and in lower density (per unit area). As a distance from the LEDs  517  increases, the size of the dots  522   a  increases and the density of the dots  522   a  increases. When the light rays entering the light guide plate  519  through the light entering surface  519   c  reach the dots  522   a , the light rays are reflected or scattered by the dots  522   a . Then, the light rays exit through the light exiting surface  519   a.    
     Next, the complementary color members  523  will be described with reference to  FIGS. 37 and 38 .  FIG. 37  is a plan view schematically illustrating positional relationships among the LEDs  517 , the light guide plate  519 , the complementary color members  523 , the reflection sheet  520  viewed from the front side.  FIG. 38  is a magnified cross-sectional view illustrating the light source non-opposed adjacent end  5192  and therearound of the liquid crystal display device  510 .  FIG. 38  is a cross-sectional view along line B-B in  FIG. 37 . 
     Each complementary color member  523  is a sheet shaped member that exhibits a color (yellow in this embodiment) which makes a complementary color pair with blue (reference color) exhibited by light emitted by the LEDs  517  (primary light, blue light). The complementary color member  523  in this embodiment (an example of a first complementary color member) has light transmissivity similar to the phosphor sheet  5150 . The complementary color member  523  has a function for absorbing some light rays emitted by the LEDs  517  (primary light, blue light), converting the light rays into light rays in a different wavelength range (secondary light), and releasing the light rays. The complementary color member  523  contains phosphors that emit light rays in a different wavelength range when excited by the light rays emitted by the LEDs  517  (primary light, blue light). 
     Each complementary color member  523  in this embodiment has a configuration similar to that of the phosphor sheet  5150 . The complementary color member  523  may include a wavelength converting layer, supporting layers, and barrier layers. The supporting layers sandwich the wavelength converting layer. The barrier layers are over the supporting layers on the outer sides to sandwich the wavelength converting layer and the supporting layers. The wavelength converting layer of the complementary color member  523  includes an acrylic resin as a binder resin and quantum dot phosphors scattered in the acrylic resin. The supporting layers of the complementary color member  523  are sheet shaped (film shaped) members made of polyester resin such as PET similar to the supporting layers of the phosphor sheet  5150 . 
     As illustrated in  FIGS. 37 and 38 , the complementary color members  523  are disposed between the back surface  519   b  (the opposite surface) and the reflection sheet  520  to overlap ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed adjacent ends) on the back surface  519   b  (the opposite surface) of the light guide plate  519 . The complementary color members  523  are disposed to cover the ends  5192  and  5193  (the light source non-opposed adjacent ends) on the left and the right side of the light entering surface  519   c  from the back surface  519   b  side (the opposite surface side), respectively. Portions of the complementary color members  523  project outward from the respective ends  5192  and  5193  (the light source non-opposed adjacent ends). The back surfaces of the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed adjacent ends) are completely covered with the complementary color members  523 . 
     In such a lighting unit  512 , when power is supplied to the LEDs  517 , the LEDs  517  are turned on. The light rays emitted by the LEDs  517  (primary light, blue light) enter the light guide plate  519  through the light entering surface  519   c . The light rays in the light guide plate  519  transmit through the light guide plate  519  while repeatedly reflected. During the transmission through the light guide plate  519 , the light rays reaching the light reflecting and scattering pattern  522  (the dots  522   a ) on the back surface  519   b  are directed toward the light exiting surface  519   a , and then to the phosphor sheet  5150  via the light exiting surface  519   a.    
     As described earlier, some blue light rays pass through the phosphor sheet  5150  but some blue light rays are converted into yellow light rays with the different wavelength and released. The light rays (the blue light rays, the yellow light rays) exiting from the phosphor sheet  5150  may reach the other optical members  515  (the optical sheets) over the phosphor sheet  5150  or the reflection sheet  520  on the back surface  519   b  side. Such light rays are retroreflected for several times and pass through the phosphor sheet  5150  for several times. The light rays exiting from the optical members  515  form a planar light that travels toward the back surface of the liquid crystal panel  511 . 
       FIG. 35  illustrates the light guide plate  519  viewed from the light exiting surface  519   a  side. The light rays exiting from regions R 1  and R 2  of the light exiting surface  519   a  having the rectangular shape closer to the short end surfaces  519   e  and  519   f  (the light source non-opposed surfaces) adjacent to the light entering surface  519   c  are retroreflected for the smaller number of times in comparison to the light rays exiting from the center region of the light exiting surface  519   a . Light is supplied to the center region of the light exiting surface  519   a  mainly by the LEDs  517  in the middle of line of the LEDs  517 . Light is supplied to the regions R 1  and R 2  of the light exiting surface  519   a  on the left side and the right side by the LEDs  517  closer to the ends of line of the LEDs  517 . Although the light rays emitted by the LEDs  517  exhibit orientation distribution with a certain angle, the light rays exhibit high straightforwardness. Therefore, the light is less likely to be supplied to the ends of the light guide plate  519  (the portions on the light source non-opposed surface  519   e  side and on the light source non-opposed surface  519   f  side adjacent to the light entering surface  519   c ) by the LEDs  517  in the middle of the LED board  518 . 
     In  FIG. 35 , a rectangle  5130  (a chain line) along the outer edges of the light exiting surface  519   a  indicates an inner edge position of the frame  516  (an inner edge position of a frame body  5161 , an inner edge position of the bezel  513 ). The light rays exiting from the light guide plate  519  through the light exiting surface  519   a  and reaching the liquid crystal panel  511  (i.e., the light rays emitted by the lighting unit  512 ) pass inside the inner edges of the frame  516 . When the lighting unit  512  is viewed in plan from the light exiting side, a region R 11  surrounded by the rectangle  5130  and the region R 1  and a region R 22  surrounded by the rectangle  5130  and the region R 2  are regions in which the number of the retroreflection is smaller in comparison to the center region. 
     In this embodiment, the complementary color members  523  are disposed between the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed adjacent ends) and the reflection sheet  520  to overlap at least the portions from which the light rays that are retroreflected for less times exit (the region R 11  and the region R 22 ). The region R 11  covers an entire area of a portion of the back surface  519   b  (the opposite surface) of the light guide plate  519  corresponding to the light source non-opposed adjacent ends  5192  when viewed in plan. The region R 22  covers an entire area of a portion of the back surface  519   b  (the opposite surface) of the light guide plate  519  corresponding to the light source non-opposed end  5193  when viewed in plan. 
     If the complementary color members  523  are removed and light is supplied by the LEDs  517 , the percentage of the blue light rays in light exiting from the regions R 11  and R 12  of the light guide plate  519  is higher than that in light exiting from the center portion. The edge sections of the display surface of the liquid crystal panel  511  (corresponding to the regions R 11  and R 22 ) look bluish in comparison to the center section. 
     In the lighting unit  512  in this embodiment, the complementary color members  523  similar to the phosphor sheet  5150  are disposed on the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed adjacent portions) on the back surface  519   b  side (the opposite surface side) with the reflection sheet  520  placed thereon. According to the configuration, the wavelength conversion efficiency for converting the primary light (the blue light) to the secondary light (the red light, the green light) can be improved even through the number of times of the retroreflection is small in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a . In this embodiment, the wavelengths of the light rays exiting from the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a  are converted by the complementary color members  523  other than the phosphor sheet  5150 . 
     Among the light rays of the primary light (the blue light) entering the light guide plate  519 , some of the light rays reaching the complementary color members  523  via the back surface  519   b  (the opposite surface) are converted into the secondary light rays with other wavelengths (yellow light rays obtained through mixture of the green light rays and the red light rays) by the phosphors in the complementary color members  523 . The secondary light rays obtained through the wavelength conversion by the complementary color members  523  reaching the reflection sheet  520  are reflected by the reflection sheet  520  and returned to the light guide plate  519 . The secondary light rays reaching the complementary color members  523  and passing through the complementary color members  523  are reflected by the reflection sheet  520  and returned to the light guide plate  519 . 
     As described above, the complementary color members  523  are disposed on the ends  5192  and  5192  of the light guide plate  519  on the left side and the right side (the light source non-opposed adjacent ends) on the back surface  519   b  with the reflection sheet  520  placed thereon. According to the configuration, the percentage of the light rays in yellow (complementary color light rays) which makes a complementary color pair with blue can be increased and the percentage of the light rays in blue (the blue light rays) can be reduced in the regions R 11  and R 22  (R 1  and R 2 ). Therefore, light rays in whitish color exit not only from the center regions but also from the ends of the lighting unit  512 . In the lighting unit  512 , tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side and the light source non-opposed adjacent ends  5193  side) more in blue (the color of the primary light) in comparison to the center portion is less likely to occur. 
     The percentage of the blue light rays in the light exiting from a section of the light exiting surface  519   a  closer to the long end surface  519   d  opposite from the light entering surface  519   c  (the opposite-side light source non-opposed surface) may be higher in comparison to the center section depending on a condition of the light reflecting and scattering pattern  522  formed on the back surface  519   b  of the light guide plate  519 . An area in which the bluish light rays exiting from the section closer to the long end surface  519   d  (the opposite-side light source non-opposed surface) exit is significantly smaller than areas in which the light rays exiting from the ends of the light guide plate  519  (on the light source non-opposed surface  519   e  side and the light source non-opposed surface  519   f  side adjacent to the light entering surface  519   c ). Furthermore, such light rays can be ignored as a problem in viewing an image displayed on the liquid crystal panel  511 . 
     The percentage of the blue light rays in the light exiting from a section of the light exiting surface  519   a  closer to the light entering surface  519   c  may be higher in comparison to the center section depending on a condition of the light reflecting and scattering pattern  522 . An area in which the bluish light rays exiting from the section closer to the light entering surface  519   c  is small. Furthermore, such light rays can be ignored as a problem in viewing an image displayed on the liquid crystal panel  511 . 
     Twentieth Embodiment 
     A twentieth embodiment of the present invention will be described with reference to  FIG. 39 . In this section, a lighting unit (a liquid crystal display unit) including a complementary color member  523 A instead of the complementary color members  523  of the nineteenth embodiment will be described. Components that are the same as those of the nineteenth embodiment will be indicated with the same symbols as those of the nineteenth embodiment and will not be described. 
       FIG. 39  is an explanatory view illustrating positional relationships among the LEDs  517 , the light guide plate  519 , the complementary color member  523 A, and the reflection sheet  520 . The complementary color member  523 A in this embodiment (an example of a first complementary color member) is made of material the same as that of the nineteenth embodiment. The complementary color member  523 A has light transmissivity and a function for absorbing some light rays emitted by the LEDs  517  (primary light rays, blue light rays), converting the light rays into light rays having wavelengths in a different wavelength range (secondary light rays, red light rays, green light rays), and releasing the light rays. 
     The complementary color member  523 A is disposed between the light guide plate  519  and a reflection sheet  521  to overlap not only the ends  5192  and  5193  of the light guide plate  519  on the left side and the right side (the light source non-opposed ends) but also the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). The complementary color member  523 A includes two short-side complementary color members  5230  and a long-side complementary color member  5231 . The short-side complementary color members  5230  are placed in the ends  5192  and  5193  on the left side and the right side (the light source non-opposed ends) similar to the complementary color member  523  in the nineteenth embodiment. The long-side complementary color member  5231  is placed in the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). The long-side complementary color member  5231  connects one of the short-side complementary color members  5230  to another. The short-side complementary color members  5230  have shapes the same as the shapes of the complementary color members  523  in the nineteenth embodiment. 
     In this embodiment, bluish light rays exit from a section of the light guide plate  519  closer to the long end surface  519   d  (the opposite-side light source non-opposed surface) due to differences in the light reflecting and scattering pattern formed on the back surface of the light guide plate  519 . An area in which the bluish light rays exiting from the section closer to the long end surface  519   d  (the opposite-side light source non-opposed surface) exit is smaller than sections in which the light rays exiting from the ends of the light guide plate  519  (on the light source non-opposed surface  519   e  side and the light source non-opposed surface  519   f  side). Therefore, the long-side complementary color member  5231  has a width smaller than that of the short-side complementary color members  230 . 
     As in this embodiment, the complementary color member  523 A can be placed on not only the ends  5192  and  5193  on the left side and the right side (the light source non-opposed ends) but also the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). In the lighting unit including such a complementary color member  523 A, tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side, the light source non-opposed adjacent ends  5193  side, and the opposite-side light source non-opposed end  5191  side) more in the color of the primary light from the LEDs  517  (blue) in comparison to the center portion is less likely to occur. 
     Twenty-First Embodiment 
     A twenty-first embodiment of the present invention will be described with reference to  FIG. 40 . In this section, a liquid crystal display device  510 B including a lighting unit  512 B that includes complementary color members  523 B instead of the complementary color members  523  of the nineteenth embodiment described above.  FIG. 40  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end  5192  and therearound of the liquid crystal display device  510 B according to the twenty-second embodiment.  FIG. 40  includes a portion corresponding to a portion of the nineteenth embodiment in  FIG. 38 . 
     Similar to the above-described embodiment  519 , each complementary color member  523 B in this embodiment is a sheet shaped member in the color (yellow in this embodiment) which makes a complementary color pair with blue (reference color) exhibited by light rays (primary light rays, blue light rays) emitted by the LEDs  517 . Unlike the nineteenth embodiment, each complementary color member  523 B has a function for selectively absorbing light rays from the LEDs  517  (the primary light rays, the blue light rays). Furthermore, the complementary color member  523 B has a function for passing the secondary light rays (green light rays, red light rays) with wavelengths converted by the phosphors contained in the phosphor sheet  5150  (light transmissivity). Yellow cellophane films may be used for the complementary color members  523 B. 
     Similar to the nineteenth embodiment, in this embodiment, the complementary color members  523  are disposed between the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed ends) and the reflection sheet  520  (see  FIG. 35 ) to overlap at least the regions (the region R 11  and the region R 22 ) from which the light rays that are retroreflected for the smaller number of times exit. Some light rays passing through the back surface  519   b  (the opposite surface) and reaching the complementary color members  523 B among the light rays entering the light guide plate  519  are absorbed by the complementary color members  523 B. The secondary light rays (the green light rays, the red light rays) reaching the complementary color members  523 B and passing through the complementary color members  523 B are reflected by the reflection sheet  520  and returned to the light guide plate  19 . 
     In the lighting unit  512 B in this embodiment, the complementary color members  523 B are disposed on the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed adjacent portions) on the back surface  519   b  side (the opposite surface side) with the reflection sheet  520  placed thereon. The complementary color members  523 B are configured to selectively absorb the primary light rays (the blue light rays) and selectively pass the secondary light rays (the yellow light rays obtained from the green light rays and the red light rays). According to the configuration, even though the light rays are retroreflected for the smaller number of times in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a , the percentage of the light rays in yellow that makes a complementary color pair with blue (the complementary color light rays) can be increased and the percentage of the light rays in blue (the blue light rays) in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a.    
     Whitish light rays exit from the ends of the lighting unit  512 B as from the center portion. In the lighting unit  512 B, tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side and the light source non-opposed adjacent ends  5193  side) more in the color of the primary light from the LEDs  517  (blue) in comparison to the center portion is less likely to occur. The complementary color members  523 B having the function for selectively absorbing the light rays from the LEDs  517  (the primary light rays, the blue light rays) and the function for selectively passing the secondary light rays (the green light rays, the red light rays) (the light transmissivity) may be used. 
     Twenty-Second Embodiment 
     A twenty-second embodiment of the present invention will be described with reference to  FIGS. 41 and 42 . In this section, a liquid crystal display device  510 C including a lighting unit  512 C that includes complementary color members  524  (an example of a second complementary color member) instead of the complementary color members  523  of the nineteenth embodiment will be described.  FIG. 41  is an explanatory drawing illustrating positional relationships among LEDs  517 , a light guide plate  519 , complementary color members  524 , and the reflection sheet  520  with one another in the lighting unit  512 C according to the twenty-second embodiment.  FIG. 42  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end  5192  and therearound of the liquid crystal display device  510 C according to the twenty-second embodiment.  FIG. 42  is a cross-sectional view of a portion corresponding to a portion illustrated in  FIG. 41  along line C-C. 
     The complementary color members  524  in this embodiment are made of the same material as that of the nineteenth embodiment. Namely, each complementary color members  524  has the light transmissivity and the function for absorbing some light rays emitted by the LEDs  517  (the primary light rays, the blue light rays), converting the light rays into the light rays with the wavelengths in the different wavelength range (the red light rays and the green light rays provided as the secondary light rays), and releasing the light rays, similar to the phosphor sheet  5150  in the nineteenth embodiment. Furthermore, each complementary color members  524  has a shape the same as that of the c complementary color members  523  in the nineteenth embodiment. 
     Unlike the nineteenth embodiment, the complementary color members  524  are disposed between sections of the light exiting surface  519   a  overlapping the ends of the light guide plate  519  on the left and the right (the light source non-opposed adjacent ends  5192  and  5193 ) and the phosphor sheet  5150 . As illustrated in  FIG. 41 , portions of the complementary color members  524  project outward from the ends of the light guide plate on the left side and the right side (the light source non-opposed adjacent ends  5192  and  5193 ). 
     In this embodiment, the complementary color members  524  are disposed between the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed ends) and the phosphor sheet  5150  to overlap at least the regions (the region R 11  and the region R 22 ) from which the light rays that are retroreflected for the smaller number of times exit. In the lighting unit  512 C in this embodiment, the complementary color members  524  similar to the phosphor sheet  5150  are disposed on the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed ends) on the light exiting surface  519   a  side. According to the configuration, the wavelength conversion efficiency for converting the primary light (the blue light) to the secondary light (the red light, the green light) can be improved even through the number of times of the retroreflection is small in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a . In this embodiment, the light rays exiting from the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a  are converted into light rays with other wavelengths by the complementary color members  524  other than the phosphor sheet  5150 . 
     The complementary color members  524  are disposed on the light exiting surface  519   a  side to overlap the ends  5192  and  5192  of the light guide plate  519  on the left side and the right side (the light source non-opposed ends). According to the configuration, the percentage of the light rays in yellow that makes a complementary color pair with blue (the complementary color light rays) can be increased and the percentage of the light rays in blue (the blue light rays) can be decreased in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a . Therefore, whitish color rays exit from the ends of the lighting unit  512 C as from the center portion. Namely, in the lighting unit  512 C in this embodiment, tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side and the light source non-opposed adjacent ends  5193  side) more in the color of the primary light from the LEDs  517  (blue) in comparison to the center portion is less likely to occur. As described above, the complementary color members  524  may be disposed between the light exiting surface  519   a  of the light guide plate  519  and the phosphor sheet  5150 . 
     Twenty-Third Embodiment 
     A twenty-third embodiment of the present invention will be described with reference to  FIG. 43 . In this section, a lighting unit including a complementary color member  524 D (an example of a second complementary color member) instead of the complementary color members  524  of the twenty-second embodiment will be described.  FIG. 43  is an explanatory drawing illustrating positional relationships among the LEDs  517 , the light guide plate  519 , the complementary color member  524 , and the reflection sheet  520  in the lighting device in the twenty-third embodiment. 
     The complementary color member  524 D is made of the same material that of the twenty-second embodiment. The complementary color member  524 D is disposed on the light exiting surface  519   a  side to overlap not only the ends  5192  and  5193  of the light guide plate  519  on the left side and the right side but also the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). The complementary color member  524 D includes two short-side complementary color members  5240  and a long-side complementary color member  5241 . The short-side complementary color members  5240  are placed on the ends  5192  and  5193  on the left side and the right side (the light source non-opposed portions) similar to the complementary color members  524  in the twenty-second embodiment. The long-side complementary color member  5241  is placed on the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). The long-side complementary color member  5241  connects one of the short-side complementary color members  5230  to another. Each short-side complementary color member  5240  has a shape the same as that of the complementary color member  524  in the twenty-second embodiment. 
     In this embodiment, bluish light rays exit from a section of the light guide plate  519  closer to the long end surface  519   d  (the opposite-side light source non-opposed surface) due to differences in the light reflecting and scattering pattern formed on the back surface of the light guide plate  519 . An area in which the bluish light rays exiting from the section closer to the long end surface  519   d  (the opposite-side light source non-opposed surface) exit is smaller than sections in which the light rays exiting from the ends of the light guide plate  519  (on the light source non-opposed surface  519   e  side and the light source non-opposed surface  519   f  side). Therefore, the long-side complementary color member  5241  has a width smaller than that of the short-side complementary color members  240 . 
     As in this embodiment, the complementary color member  524 D can be placed on not only the ends  5192  and  5193  of the light guide plate  519  on the left side and the right side (the light source non-opposed ends) but also the end  5191  on the side opposite from the light entering end  5190  (the opposite-side light source non-opposed end). In the lighting unit including such a complementary color member  524 D, tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side, the light source non-opposed adjacent ends  5193  side, and the opposite-side light source non-opposed end  5191  side) more in the color of the primary light from the LEDs  517  (blue) in comparison to the center portion is less likely to occur. 
     Twenty-Fourth Embodiment 
     A twenty-fourth embodiment of the present invention will be described with reference to  FIG. 44 . In this section, a lighting unit  512 E including complementary color members  524 E (an example of a second complementary color member) instead of the complementary color members  524  of the twenty-second embodiment described above.  FIG. 44  is a magnified cross-sectional view illustrating a light source non-opposed adjacent end  5192  and therearound of a liquid crystal display device  510 E according to the twenty-fourth embodiment. FIG.  44  includes a portion corresponding to a portion of the twenty-second embodiment in  FIG. 42 . 
     Similar to the twenty-second embodiment, each complementary color member  524 E in this embodiment is a sheet shaped member in the color (yellow in this embodiment) which makes a complementary color pair with blue (the reference color) exhibited by light rays emitted by the LEDs  517  (primary light rays, blue light rays). Unlike the twenty-second embodiment, each complementary color member  524 E has a function for selectively absorbing light rays from the LEDs  517  (the primary light rays, the blue light rays). Furthermore, the complementary color member  524 E has a function for passing the secondary light rays (green light rays, red light rays) with wavelengths converted by the phosphors contained in the phosphor sheet  5150  (light transmissivity). Yellow cellophane films may be used for the complementary color members  524 E similar to the twenty-first embodiment. 
     Similar to the twenty-second embodiment, in this embodiment, the complementary color members  524 E are disposed between the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed ends) and the phosphor sheet  5150  to overlap at least the regions (the region R 11  and the region R 22 ) from which the light rays that are retroreflected for the smaller number of times exit. Some light rays passing through the light exiting surface  519   a  and reaching the complementary color member  524 E among the primary light rays (blue light rays) entering the light guide plate  519  are absorbed by the complementary color member  524 E. The secondary light rays (green light rays, red light rays) reaching the complementary color member  524 E pass through the complementary color member  524 E and reach the phosphor sheet  5150 . 
     In the lighting unit  512 E in this embodiment, the complementary color member  524 E are disposed on the ends  5192  and  5193  of the light guide plate  519  (the light source non-opposed ends) on the light exiting surface  519   a  side. The complementary color member  524 E has the function for selectively absorbing the primary light rays (the blue light rays) and selectively passing the secondary light rays (the yellow light rays obtained from the green light rays and the red light rays). According to the configuration, the percentage of the light rays in yellow that makes a complementary color pair with blue can be increased and the percentage of the light rays in blue (the blue light rays) can be reduced in the regions R 11  and R 22  (R 1  and R 2 ) even through the number of times of the retroreflection is small in the regions R 11  and R 22  (R 1  and R 2 ) of the light exiting surface  519   a.    
     Whitish light rays exit from the ends of the lighting unit  512 E as from the center portion. In the lighting unit  512 E, tinting the light rays of the planar exiting light in the ends (on the light source non-opposed adjacent ends  5192  side and the light source non-opposed adjacent ends  5193  side) more in the color of the primary light from the LEDs  517  (blue) in comparison to the center portion is less likely to occur. The complementary color members  524 E having the function for selectively absorbing the light rays from the LEDs  517  (the primary light rays, the blue light rays) and the function for selectively passing the secondary light rays (the green light rays, the red light rays) (the light transmissivity) may be used. 
     Twenty-Fifth Embodiment 
     A twenty-fifth embodiment of the present invention will be described with reference to  FIGS. 45 to 55 . A liquid crystal panel  611  included in a liquid crystal display device  610  according to the twenty-fifth embodiment has a configuration similar to that of the liquid crystal panel  11  of the first embodiment. 
     As illustrated in  FIG. 45 , a backlight unit  612  includes a chassis  614 , optical members  615  (optical sheets), LEDs  617  that are a light source, an LED board  618  on which the LEDs  617  are mounted, a light guide plate  619 , and a frame  616 . The light guide plate  619  is configured to direct light from the LEDs  617  to the optical members  615  (the liquid crystal panel  611 ). The frame  616  holds the light guide plate  619  from the front side and supports the optical members  615  from the rear side. The configurations of the chassis  614 , the LEDs  617 , the LED board  618 , and the light guide plate  619  are similar to those of the chassis  14 , the LEDs  17 , the LED board  18 , and the light guide plate  19  in the first embodiment. 
     As illustrated in  FIG. 45 , the optical members  615  include four sheets. Specifically, the optical members  615  include a wavelength converting sheet  620  (a wavelength converting member), a micro lens sheet  621 , a prism sheet  622 , and a reflective type polarizing sheet  623 . The wavelength converting sheet  620  is configured to convert some light rays emitted by the LEDs  617  (primary light rays) into light rays with other wavelengths (secondary light rays). The micro lens sheet  621  is configured to exert isotropic light collecting effects on light rays. The prism sheet  622  is configured to exert anisotropic light collecting effects on light rays. The reflective type polarizing sheet  623  is configured to polarize and reflect the light rays. As illustrated in  FIGS. 47 and 48 , he wavelength converting sheet  620 , the micro lens sheet  621 , the prism sheet  622 , and the reflective type polarizing sheet  623  of the optical members  615  are placed on top of each other in this sequence from the rear side with ends of the optical members  615  placed on the front surface of the frame  616 . 
     As illustrated in  FIG. 45 , the frame  616  includes a horizontally-long frame portion  616   a  (a picture frame portion, a frame shaped supporting portion) which extends along the outer edges of the light guide plate  619  and the optical members  615 . An peripheral portion of the light guide plate  619  is held with the frame portion  616   a  from the front side for about an entire periphery. The frame portion  616   a  of the frame  616  is disposed between the optical member  615  (the wavelength converting sheet  20 ) and the light guide plate  619 . The frame portion  616   a  receives the peripheral portions of the optical members  615  from the rear side to support them. According to the configuration, the optical members  615  are held at a position away from the light guide plate  619  by a distance corresponding to the frame portion  616   a . A cushion  624  is disposed on the back surface of the frame portion  616   a  of the frame  616  (on the light guide plate  619  side). The cushion  624  are made of PORON (registered trademark), for example. The cushion  624  has a frame shape to extend for an entire periphery of the frame portion  616   a . The frame  616  includes a liquid crystal panel supporting portion  616   b  that project frontward from the frame portion  616   a  to support an peripheral portion of the liquid crystal panel  611  from the rear side. 
     As illustrated in  FIGS. 47 and 48 , the peripheral portion of the wavelength converting sheet  620  is placed directly on the frame portion  616   a  of the frame  616  from the front side. As illustrated in  FIG. 50 , the wavelength converting sheet  620  includes at least a wavelength converting layer  620   a  (a phosphor film) and a pair of protective layers  620   b  (protective films). The wavelength converting layer  620   a  contains phosphors (wavelength converting substances) for converting the light rays from the LEDs  617  into light rays with other wavelengths. The protective layers  620   b  sandwich the wavelength converting layer  620   a  from the front and the rear sides to protect the wavelength converting layer  620   a . In the wavelength converting layer  620   a , red phosphors and green phosphors are dispersed. The red phosphors emit red light rays (visible light rays in a specific wavelength range corresponding to the color range of red) when excited by a single color of blue light rays from the LEDs  617 . The green phosphors emit green light rays (visible light rays in a specific wavelength range corresponding to the color range of green) when excited by the blue light rays from the LEDs  617 . According to the configuration, the wavelength converting sheet  620  converts the light rays emitted by the LEDs  617  (the blue light rays, the primary light rays) into secondary light rays in a color (yellow) which makes a complementary color pair with the color (blue) of the emitted light rays (green light rays and red light rays). The wavelength converting layer  620   a  includes a base  620   a   1  (a phosphor base) and a phosphor layer  620   a   2  applied to the base  620   a   1 . The base  620   al  is a film made of substantially transparent synthetic resin. The phosphor layer  620   a   2  includes the red phosphors and the green phosphors dispersed therein. The protective layer  620   b  is a film made of substantially transparent synthetic resin having high resistance to moisture. As described above, the wavelength converting sheet  620  has the configuration similar to that of the wavelength converting sheet  420  in the seventh embodiment (see  FIG. 20 ). 
     As illustrated in  FIGS. 47 and 48 , a gap tends to be created between components in an outer area of the backlight unit  612 . Light may leak through such a gap. The light leaking through the gap in the outer area of the backlight unit  612  may include many primary light rays before the wavelength conversion by the wavelength converting sheet  620 , that is, blue light rays emitted by the LEDs  617 . In comparison to the center portion, the peripheral portion looks bluish similar to the color of light emitted by the LEDs  617 , that is, color evenness may be observed. 
     As illustrated in  FIGS. 47, 48, and 51 , the backlight unit  612  in this embodiment includes a retroreflector  631 . The retroreflector  631  is disposed to at least partially overlap a peripheral portion  630  of the wavelength converting sheet  620  that includes the peripheral portion  630  and a center portion  629 . The retroreflector  631  does not overlap the center portion  629 . The retroreflector  631  is configured to retroreflect some light rays to the side opposite from the light exiting side, that is, to the rear side. According to the configuration, some light rays around the peripheral portion of the wavelength converting sheet  620  are retroreflected to the rear side by the retroreflector  631 . The light rays retroreflected to the rear side by the retroreflector  631  are more likely to pass through the wavelength converting sheet  620  and converted into light rays with other wavelengths. Therefore, even if light leaks through the gap between the components in the outer area of the backlight unit  612 , exiting light is less likely to be bluish similar to the color of light emitted by the LEDs  617  (the primary light) in the outer area of the backlight unit  612  and thus the color unevenness is less likely to occur in the exiting light. 
     As illustrated in  FIG. 55 , the retroreflector  631  includes a base  632  that is a sheet (or a film) and a large number of light scattering particles  633  (light diffusing particles) dispersed in the base  632  for scattering and reflecting (diffusely reflecting) light rays. The retroreflector  631  has the configuration similar to a configuration of a light scattering reflecting sheet (a light diffusing reflecting sheet), which is one kind of ordinary optical members. Namely, the retroreflector  631  can be produced using such an ordinary optical member. This configuration is preferable for reducing the production cost. The base  632  of the retroreflector  631  is mainly made of substantially transparent synthetic rein having high light transmissivity such as acrylic resin, polyurethane, polyester, silicone resin, epoxy resin, and ultraviolet curing resin. The light scattering particles  633  of the retroreflector  631  is made of white or substantially transparent material. The material may be inorganic material such as silica, aluminum hydroxide, and zinc oxide or organic material such as acrylic resin, polyurethane, and polystyrene. The retroreflector  631  includes a surface for scattering and reflecting the light rays (Lambertian reflectance). The light scattering particles  633  scatter and reflect the light rays without absorbing. Some light rays of the scattered and reflected light rays are retroreflected to the rear side. High light use efficiency can be achieved and thus chronological reduction in performance is less likely to occur. Each light scatting particle  633  has a spherical shape. The light scattering particles  633  are scatted in the base  632  with a predefined concentration distribution. 
     As illustrated in  FIGS. 47 and 48 , the retroreflector  631  is disposed to overlap the wavelength converting sheet  620  on the light exiting side, that is, on the front side. According to the configuration, the light rays passed through the wavelength converting sheet  620  and retroreflected by the retroreflector  631  pass through the wavelength converting sheet  620  immediately after retroreflected. Namely, the light rays pass through the wavelength converting sheet  620  for the larger number of times. The light rays are more likely to be converted to light rays with other wavelengths. This configuration is more preferable for reducing the color unevenness. As illustrated in  FIG. 52 , the retroreflector  631  has a horizontally-long rectangular overall shape in a plan view to extend for an entire periphery of the peripheral portion  630  of the wavelength converting sheet  620 . The retroreflector  631  is disposed to overlap the peripheral portion  630  of the wavelength converting sheet  620  for the entire periphery of the peripheral portion  630 . The retroreflector  631  overlaps a section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the non-light-entering end surface  619   d , which is the peripheral surface of the light guide plate  619 . The retroreflector  631  further overlaps a section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the light entering end surface  619   b . According to the configuration, some of the light rays in an area around the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the non-light-entering end surface  619   d  of the light guide plate  619  and some of the light rays in an area around the section of the peripheral portion  630  parallel to the light entering end surface  619   b  of the light guide plate  619  are retroreflected to the rear side by the retroreflector  631 . The light rays transmitting through the light guide plate  619  may exit through the non-light-entering end surface  619   d  of the light guide plate  619  or through the light entering end surface  619   b  and the light rays leak through the gap between the components of the backlight unit  612 . Even in such a case, the color unevenness can be properly reduced. Furthermore, regardless of the location of the gap between the components of the backlight unit  612  on the periphery, the color unevenness resulting from the leak of light through the gap can be properly reduced. 
     As illustrated in  FIGS. 47, 48, and 51 , the retroreflector  631  includes a section that overlaps the frame portion  616   a  of the frame  616  and a section disposed inner than the inner edge of the frame portion  616   a  of the frame  616 . The frame portion  616   a  supports the peripheral portion of the light guide plate  619  from the front side. The retroreflector  631  is disposed to cross the inner edge of the frame portion  616   a . The inner edge of the frame portion  616   a  of the frame  616  is at a boundary between an effective light exiting area and a non-effective light exiting area. The retroreflector  631  is disposed in an area of the light exiting plate surface  619   a  of the light guide plate  619  across the boundary between effective light exiting area and the non-effective light exiting area. According to the configuration, some of the light rays in the effective light exiting area inside the inner edge of the frame portion  616   a  of the frame  616  can be retroreflected to the rear side by the retroreflector  631 . The light rays in the area around the peripheral portion  630  of the wavelength converting sheet  620  can be efficiently retroreflected. Therefore, the color unevenness resulting from the leak of light through a gap between the frame  616  and the light guide plate  619  or a gap between the frame  616  and the wavelength converting sheet  620  can be properly reduced. 
     The retroreflector  631  having the configuration described above is positioned relative to the frame  616  together with the optical members  615  (including the wavelength converting sheet  620 ). A positioning structure will be described in detail. As illustrated in  FIGS. 47, 48, and 53 , the frame  616  includes positioning portions  634  for positioning the optical members  615  and the retroreflector  631 . The positioning portions  634  protrude from the front surface of the frame portion  616   a  of the frame  616  to the front side. Each positioning portion  634  has a horizontally-long or a vertically long oval shape in a plan view. A dimension of each positioning portion  634  in a direction in which the positioning portion  634  projects from the frame portion  616   a  is larger than a total thickness of the optical members  615  and the retroreflector  631 . The positioning portions  634  are arranged at intervals along the periphery of the frame portion  616   a . Specifically, three positioning portions  634  are provided in a first long edge section of the frame portion  616   a  (on the upper side in  FIG. 53 ), two positioning portions  634  are provided in a second long edge section of the frame portion  616   a  (on the lower side in  FIG. 53 , and one positioning portion  634  is provided in each short edge section of the frame portion  616   a . A total of seven positioning portions  634  are arranged asymmetrically with respect to the vertical direction as illustrated in  FIG. 53 . 
     The optical members  615  include first mating positioning portions  635  positioned with the positioning portions  634  of the frame  616 . As illustrated in  FIG. 54 , the first mating positioning portions  635  project (extend) outward from sections of the outer edges of the optical members  615  parallel to the plate surfaces of the optical members  615 . Each of the wavelength converting sheet  620 , the micro lens sheet  621 , the prism sheet  622 , and the reflective type polarizing sheet  623  of the optical members  615  includes the first mating positioning portions  635 . Positions of the first mating positioning portions  635  arranged at intervals along the periphery of the optical members  615  in the plan view correspond to the positions of the positioning portions  634  of the frame  616 . The arrangement of the first mating positioning portions  635  is asymmetric with respect to the vertical direction as illustrated in  FIG. 54 . Each first mating positioning portion  635  has a horizontally-long or a vertically-long rectangular shape in the plan view. A size of each mating positioning portion  635  in the plan view is significantly larger than that of the corresponding positioning portion  634 . Each first mating positioning portion  635  includes a first positioning hole  635   a  at the center. The corresponding positioning portion  634  can be passed through the first positioning hole  635   a . The first positioning hole  635   a  has a horizontally-long or a vertically-long rectangular shape similar to that of the first mating positioning portion  635  and slightly smaller than the positioning portion  634  in the plan view. As illustrated in  FIGS. 47, 48, and 51 , at least portions of outer peripheries of the positioning portions  634  are in contact with inner peripheries (hole edges) of the first positioning holes  635   a  of the first mating positioning portions  635 . In this condition, the optical members  615  is positioned relative to the frame  616  with respect to a direction parallel to the plate surface thereof (the X-axis direction and the Y-axis direction). 
     The retroreflector  631  includes second mating positioning portions  636  that are positioned with the positioning portions  634  of the frame  616 . As illustrated in  FIG. 52 , the second mating positioning portions  636  project (extend) outward from sections of the outer end of the retroreflector  631  parallel to the plate surface of the retroreflector  631 . The second mating positioning portions  636  are arranged at intervals along the periphery of the retroreflector  631 . The arrangement of the second mating positioning portions  636  in the plan view is similar to that of the positioning portions  634  of the frame  616  (the arrangement of the first mating positioning portions  635  of the optical members  615 ). The arrangement of the second mating positioning portions  636  is asymmetric with respect to the vertical direction. Each second mating positioning portion  636  has a horizontally-long or a vertically-long rectangular shape in the plan view. The size of the second mating positioning portion  636  in the plan view is significantly larger than the positioning portion  634  and about the same as the first mating positioning portion  635 . Each mating positioning portion  636  includes a second positioning hole  636   a  at the center. The corresponding positioning portion  634  can be passed through the second positioning hole  636   a . The second positioning hole  636   a  has a horizontally-long or a vertically-long rectangular shape similar to the second mating positioning portion  636  in the plan view. The size of the second positioning hole  636   a  in the plan view is slightly smaller than that of the positioning portion  634  and about the same as that of the first positioning hole  635   a . When the second mating positioning portions  636  are arranged to correspond with the first mating positioning portions  635  in the plan view, the second positioning hole  636   a  correspond with the first positioning holes  635   a  such that the inner walls of the second positioning holes  636   a  are flush with the inner wall of the respective first positioning holes  635   a  (see  FIGS. 47 and 48 ). As illustrated in  FIGS. 47, 48, and 51 , at least portions of outer peripheries of the positioning portions  634  are in contact with inner peripheries (hole edges) of the second positioning holes  636   a  of the second mating positioning portions  636 . In this condition, the retroreflector  631  is positioned relative to the frame  616  with respect to a direction parallel to the plate surface thereof (the X-axis direction and the Y-axis direction). Because the retroreflector  631  is positioned using the positioning portions  634  that are shared with the optical members  615 , the position of the retroreflector  631  relative to the wavelength converting sheet  620  is maintained with high positioning accuracy without using an adhesive or other methods. Furthermore, this configuration is preferable for simplifying the positioning structure. 
     This embodiment has the configuration described above. Next, the functions of this embodiment will be described. In the production of the liquid crystal display device  610  having the configuration described above, the liquid crystal panel  611  and the backlight unit  612  are produced and bound together with the bezel  613 . A method of producing the backlight unit  612  will be described. In the production of the backlight unit  612 , the reflection sheet  625 , the light guide plate  619 , and the LED board  618  are placed in the chassis  614  through a light exiting portion  614   b , and the frame  616  is attached to the chassis  614 . The optical members  615  and the retroreflector  631  are attached to the frame  616  that is attached to the chassis  614 . Specifically, the wavelength converting sheet  620 , the retroreflector  631 , the micro lens sheet  621 , the prism sheet  622 , and the reflective type polarizing sheet  623  are placed in this sequence on the frame portion  616   a  of the frame  616 . 
     During the attachment of the wavelength converting sheet  620 , the positioning portions  634  of the frame  616  are aligned with the first positioning holes  635   a  of the respective first mating positioning portions  635  at the peripheral portion of the wavelength converting sheet  620  and inserted in the first positioning holes  635   a . The outer peripheries of the positioning portions  634  are brought into contact with the inner walls (the hole edges) of the respective positioning holes  635   a  (see  FIGS. 47, 48, and 51 ). Shift of the position of the wavelength converting sheet  620  is restricted in directions parallel to the plate surface of the wavelength converting sheet  620 . The wavelength converting sheet  620  is positioned. During the attachment of the retroreflector  631  to the wavelength converting sheet  620  on the front side, the positioning portions  634  of the frame  616  are inserted in the second positioning holes  636   a  of the respective second mating positioning portions  636  at the outer end of the retroreflector  631 . Outer edges of the positioning portions  634  are bought into contact with the inner walls (the hole edges) of the respective second positioning holes  636   a  (see  FIGS. 47, 48, and 51 ). In this condition, the second positioning holes  636   a  are at the positions corresponding with the first positioning holes  635   a  in the plan view. Shifts of the positions of the retroreflector  631  and the wavelength converting sheet  620  are restricted in directions parallel to their plate surfaces. The retroreflector  631  is positioned together with the wavelength converting sheet  620 . The optical members  615  other than the wavelength converting sheet  620  (the micro lens sheet  621 , the prism sheet  622 , and the reflective type polarizing sheet  623 ) are positioned in the same manner using the positioning portions  634  and the first mating positioning portions  635 . Alternatively, the optical members  615  and the retroreflector  631  are bound are attached to the frame  616  before attaching the frame  616  to the chassis  614  and a unit including the frame  616 , the optical members  615 , and the retroreflector  631  may be collectively attached to the chassis  614 . 
     When the liquid crystal display device  610  produced as describe above is turned on, the driving of the liquid crystal panel  611  is controlled by a panel control circuit in a control circuit board, which is not illustrated. Furthermore, driving power is supplied to the LEDs  617  on the LED board  618  by an LED driver circuit in an LED driver circuit board, which is not illustrated, and the driving of the LEDs  617  is controlled. The light emitted by the LEDs  617  is guided by the light guide plate  619  to the liquid crystal panel  611  via the optical members  615 . A predefined image is displayed on the liquid crystal panel  611 . Functions of the backlight unit  612  will be described in detail. 
     When the LEDs  617  are turned on, the blue light rays emitted by the LEDs  617  enter the light guide plate  619  through the light entering end surface  619   b  as illustrated in  FIG. 47 . The light rays that have entered through the light entering end surface  619   b  may be totally reflected off the interface between the light guide plate  619  and the outside air layer or reflected by the reflection sheet  625  while transmitting through the light guide plate  619 . The light rays are reflected and scattered. The light rays enter the light exiting plate surface  619   a  with incidences smaller than the critical angle and thus the light rays are more likely to exit through the light exiting plate surface  619   a . The light rays that have exited from the light guide plate  619  through the light exiting plate surface  619   a  are directed to the liquid crystal panel  611  after the optical effects are exerted thereon while passing through the optical members  615 . Some of the light rays are retroreflected by the optical members  615  and returned to the light guide plate  619  and exit through the light exiting plate surface  619   a  as retroreflected light rays. The retroreflected light rays are included in the light exiting from the backlight unit  612 . 
     Next, the optical effects of the optical members  615  will be described in detail. Some of the blue light rays exiting from the light guide plate  619  through the light exiting plate surface  619   a  are converted into the green light rays and the red light rays (the secondary light rays) by the green phosphors and the red phosphors contained in the wavelength converting sheet  620  that is disposed on the front side relative to the light exiting plate surface  619   a  with the gap as illustrated in  FIG. 47 . Illumination light in substantially white is obtained from the green light rays and the red light rays obtained through the wavelength conversion and the blue light rays from the LEDs  617 . The isotropic light collecting effects are exerted on the blue light rays from the LEDs  617  and the green light rays and the red light rays obtained through the wavelength conversion by the wavelength converting sheet  620  with respect to the X-axis direction and the Y-axis direction by the micro lens sheet  621 . Then, the selective light collecting effects (the anisotropic light collecting effects) are exerted on those light rays with respect to the Y-axis direction by the prism sheet  622 . Specific polarized light rays (p-wave) among the light rays that have exited from the prism sheet  622  pass through the reflective type polarizing sheet  623  and exit toward the liquid crystal panel  611 . Other specific polarized light rays (s-wave) are selectively returned to the rear side. The s-wave reflected by the reflective type polarizing sheet  623  or the light rays reflected to the rear side without the light collecting effect exerted by the prism sheet  622  and the micro lens sheet  621  are returned to the light guide plate  619 . While traveling through the light guide plate  619 , the light rays may be reflected again by the reflection sheet  625 . Then, the light rays exit to the front side through the light exiting plate surface  619   a.    
     The light rays emitted by the LEDs  617  travel through the light exiting path described above and exit from the backlight unit  612 . In the outer area of the backlight unit  612 , a gap may be created between the components and thus the light may leak through such a gap. Specifically, a gap may be created between the light guide plate  619  and the cushion  624  (the frame  616 ) or between the frame  616  and the optical members  615  due to backlash. If such a gap is created, the blue light rays that have not been converted by the wavelength converting sheet  620  may leak through the gap. If that occurs, the color in the outer area of the backlight unit  612  looks more bluish than the color in the center area, that is, the color unevenness may be observed. As illustrated in  FIGS. 47, 48, and 51 , the wavelength converting sheet  620  in this embodiment is disposed over the retroreflector  631  to overlap the peripheral portion  630  but not the center portion  629 . Therefore, the some of the light rays around the peripheral portion  630  are retroreflected to the rear side by the retroreflector  631 . The light rays retroreflected by the retroreflector  631  may include the leaking light rays and the blue light rays that have not been converted other than the leaking light rays. The light rays retroreflected to the rear side by the retroreflector  631  are more likely to pass the wavelength converting sheet  620  and thus more likely to be converted to light rays with other wavelengths. Therefore, even if leaking of light through the gap occurs, the light rays exiting from the peripheral portion of the backlight unit  612  are less likely to be in a color similar to the color of the light rays from the LEDs  617 , that is, less likely to be in blue. The color unevenness can be reduced. Furthermore, the retroreflector  631  is disposed to overlap the wavelength converting sheet  620  on the front side. Therefore, the light rays retroreflected by the retroreflector  631  immediately enter the wavelength converting sheet  620 . The light rays are more likely to be converted to light rays with other wavelengths. According to the configuration, the light rays pass through the wavelength converting sheet  620  for the larger number of times. Therefore, the light rays are more likely to be converted to the light rays with the other wavelengths. This configuration is more preferable for reducing the color unevenness. 
     The blue light rays that have not converted and traveling through the light guide plate  619  may exit the light guide plate  619  through the peripheral surfaces. The leaking light through the gap between the components of the backlight unit  612  includes such light rays. Especially, the light rays are more likely to exit thought the non-light-entering end surface  629   d  among the peripheral surfaces of the light guide plate  619 . As illustrated in  FIGS. 47 and 48 , the retroreflector  631  is disposed to overlap the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the non-light-entering end surface  619   d  of the light guide plate  619 . Therefore, some of the light rays around the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the non-light-entering end surface  619   d  of the light guide plate  619  are retroreflected to the rear side by the retroreflector  631 . Even if the light rays traveling through the light guide plate  619  exit from the light guide plate  619  through the non-light-entering end surface  619   d  and leak through the gap between the components of the backlight unit  612 , the color unevenness is properly reduced. Furthermore, the retroreflector  631  is disposed to overlap the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the light-entering end surface  619   b  of the light guide plate  619  in addition to the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the non-light-entering end surface  619   d  of the light guide plate  619 . Therefore, the light rays around the section of the peripheral portion  630  of the wavelength converting sheet  620  parallel to the light-entering end surface  619   b  of the light guide plate  619  are retroreflected to the rear side by the retroreflector  631 . Even if the light rays traveling through the light guide plate  619  exit from the light guide plate  619  through the light-entering end surface  619   b  and leak through the gap between the components of the backlight unit  612 , the color unevenness is properly reduced. Because the retroreflector  631  is disposed to extend for the entire periphery of the peripheral portion  630  of the wavelength converting sheet  620 , the color unevenness resulting from the light leaking through the gap between the components of the backlight unit  612  which is created at any positions on the periphery can e properly reduced. 
     As illustrated in  FIGS. 47, 48, and 51 , the retroreflector  631  includes the section that overlaps the frame portion  616   a  of the frame  616  that supports the end of the light guide plate  619  from the front side and the section located inner than the inner edge of the frame portion  616   a  of the frame  616 . Some of the light rays in the effective light exiting area inside the inner edge of the frame portion  616   a  of the frame  616  can be retroreflected to the rear side by the retroreflector  631 . According to the configuration, the light rays around the peripheral portion  630  of the wavelength converting sheet  620  are more efficiently retroreflected. Therefore, the color unevenness resulting from the light leaking through the gap between the frame  616  and the light guide plate  619  or the gap between the frame  616  and the wavelength converting sheet  620  can be properly reduced. 
     Twenty-Sixth Embodiment 
     A twenty-sixth embodiment of the present invention will be described with reference to  FIGS. 56 to 61 . The twenty-sixth embodiment includes a direct type backlight unit  6112 . Configurations, functions, and effects similar to those of the twenty-fifth embodiment will not be described. 
     As illustrated in  FIG. 56 , a liquid crystal display device  6110  according to this embodiment includes a liquid crystal panel  6111 , the direct type backlight unit  6112 , and a bezel  6113  that binds the liquid crystal panel  6111  and the backlight unit  6112 . The configuration of the liquid crystal panel  6111  is similar to that of the twenty-fifth embodiment and will not be described. The configuration of the direct type backlight unit  6112  will be described. 
     As illustrated in  FIG. 57 , the backlight unit  6112  includes a chassis  6114 , optical members  6115 , and a frame  6116 . The chassis  6114  has a box-like shape. The chassis  6114  includes a light exiting portion  6114   b  that opens to the outside on the front side, that is, on the light exiting side (the liquid crystal panel  6111  side). The optical members  6115  are disposed to cover the light exiting portion  6114   b  of the chassis  6114 . The frame  6116  is disposed along outer edges of the chassis  6114 . The frame  6116  and the chassis  6114  sandwich peripheral portions of the optical members  6115  to hold the peripheral portions therebetween. In the chassis  6114 , LEDs  6117 , LED boards  6118 , and diffuser lenses  637  (light sources) are disposed. The LEDs  6117  are disposed immediately below the optical members  6115  (the liquid crystal panel  6111 ) and opposed to the optical members  6115 . The LEDs  6117  are mounted on the LED boards  6118 . The diffuser lenses  637  are mounted to the LED boards  6118  at positions corresponding to the LEDs  6117 . Furthermore, in the chassis  6114 , a reflection sheet  638  is disposed. The reflection sheet  638  reflects light rays inside the chassis  6114  toward the optical members  6115 . Because the backlight unit  6112  in this embodiment is the direct type backlight unit, the light guide plate  619  (see  FIG. 47 ) used in the edge-light type backlight unit  612  in the twenty-fifth embodiment is not included in the backlight unit  6112 . This embodiment does not include the cushion  624  and the liquid crystal panel supporting portions  616   b  (see  FIG. 47 ) included in the twenty-fifth embodiment. In this regard, the configuration of the frame  6116  is different from that of the twenty-fifth embodiment. Next, components of the backlight unit  6112  will be described in detail. 
     The chassis  6114  is made of metal. The chassis  6114  has a shallow box-like overall shape with an opening on the front side. As illustrated in  FIGS. 57 and 59 , the chassis  6114  includes a bottom  6114   a  and sidewalls  6114   c . The bottom  6114   a  has a horizontally-long rectangular shape similar to the liquid crystal panel  6111 . The sidewalls  6114   c  project frontward (toward the light exiting side) from the outer edges of the bottom  6114   a , respectively. The long edges and the short edges of the chassis  6114  correspond with the X-axis direction (the horizontal direction) and the Y-axis direction (the vertical direction), respectively. The bottom  6114   a  is disposed on the rear side relative to the LED boards  6118 , that is, on the side opposite from the light exiting surface  6117   a  side (the light exiting side) relative to the LEDs  6117 . The sidewalls  6114   c  form a tubular shape continuing from the outer edges of the bottom  6114   a  for the entire periphery of the bottom  6114   a . A dimension of the opening is larger on the opening edge side on the front (the light exiting portion  6114   b  side, the side opposite from the bottom  6114   a  side). The sidewalls  6114   c  include first steps  6114   c   1  and second steps  6114   c   2 . The first steps  6114   c   1  are located lower and the second steps  6114   c   2  are located higher. Outer ends of the optical members  6115  (specifically, a diffuser plate  639 ) and the reflection sheet  638 , which will be described later, are placed on the first steps  6114   c   1 . The peripheral portion of the liquid crystal panel  6111  is placed on the second steps  6114   c   2 . The frame  6116  and the bezel  6113  are fixed to the sidewalls  6114   c.    
     As illustrated in  FIGS. 58 and 59 , the optical members  6115  include a wavelength converting sheet  6120 , a micro lens sheet  6121 , a prism sheet  6122 , a reflective type polarizing sheet  6123 , which are similar to those in the twenty-fifth embodiment, and the diffuser plate  639 . The diffuser plate  639  has a thickness larger than thickness of other optical members  6120  to  6123 . The diffuser plate  639  is disposed on the rearmost, namely, the closest to the LEDs  6117  and the diffuser lenses  637 . The peripheral portion of the diffuser plate  639  is placed directly on the first steps  6114   c   1  of the sidewalls  6114   c  of the chassis  6114 . The optical members  6115  are disposed to cover the light exiting portion  6114   b  of the chassis  6114 , that is, on an exit side of the light exiting path relative to the LEDs  6117  and the diffuser lenses  637 . Therefore, optical effects are exerted on the light rays from the LEDs  617  and the diffuser lenses  637  in a process to exit through the light exiting portion  6114   b . The optical members  6120  to  6123  other than the diffuser plate  639  have the configurations similar to those of the twenty-fifth embodiment. 
     Next, the LED boards  6118  on which the LEDs  6117  are mounted will be described. The LEDs  6117  mounted on the LED boards  6118  have the configurations similar to those of the twenty-fifth embodiment. As illustrated in  FIGS. 57 to 59 , each LED board  6118  has a horizontally-long rectangular shape in a plan view. The LED boards  6118  are held in the chassis  6114  such that the LED boards  6118  extend along the bottom  6114   a  with the long-side directions and the short-side directions correspond with the X-axis direction and the Y-axis direction, respectively. The LEDs  6117  are surface mounted on plate surfaces of the LED boards  6118  facing the front side (plate surfaces facing the optical member  6115  side). The plate surfaces are referred to as mounting surfaces  6118   a . The LEDs  6117  are linearly arranged at intervals within the plane of the mounting surface  6118   a  of each LED board  6118 . The LEDs  6117  are electrically connected to each other with a wiring pattern formed on the mounting surface  6118   a  within the plate of the mounting surface  6118   a . Specifically, eight LEDs  6117  are arranged on the mounting surface  6118   a  of each LED board  6118  along the long-side direction (the X-axis direction) of the LED board  6118 . The intervals of the LEDs  6117  on the LED board  6118  are substantially constant. The LEDs  6117  are arranged at about equal intervals in the X-axis direction. 
     As illustrated in  FIG. 57 , the LED boards  6118  having the configurations described above are arranged in the Y-axis direction within the chassis  6114 . The LED boards  6118  are arranged parallel to each other with the long-side directions and the short-side direction aligned with each other. Specifically, four LED boards  6118  are arranged along the Y-axis direction within the chassis  6114 . The arrangement direction of the LED boards  6118  corresponds with the Y-axis direction. The intervals of the LED boards  6118  adjacent to one another in the Y-axis direction are substantially constant. The LEDs  6117  are arranged at about equal intervals in the X-axis direction (a row direction) and the Y-axis direction (a column direction) within a plane of the bottom  6114   a  of the chassis  6114  to form a grid in a plan view. Specifically, eight LEDs  6117  along the long-side direction (the X-axis direction) by four LEDs  6117  along the short-side direction (the Y-axis direction) are arranged within the plane of the bottom  6114   a  of the chassis  6114  to form a grid in the plan view. The optical members  6115  disposed to cover the light exiting portion  6114   b  of the chassis  6114  are opposed to the light emitting surfaces  6117   a  of all LEDs  6117  with a predetermined gap on the front side. The LED boards  6118  include connectors to which wiring members (not illustrated) are connected. Driving power is supplied from an LED driver board (a light source driver board), which is not illustrated, to the LED boards  6118  via the wiring members. 
     The diffuser lenses  637  are made of substantially transparent synthetic resin (e.g., polycarbonate, acrylic) having high light transmissivity and a refractive index larger than that of the air. As illustrated in  FIGS. 57 to 59 , each diffuser lens  637  has a predefined thickness and a round shape in the plan view. The diffuser lenses  637  are attached to the LED boards  6118  to cover the light emitting surfaces  6117   a  of the LEDs  6117  from the front side (the light exiting side), respectively. Namely, the diffuser lenses  637  are attached to the LED boards  6118  to overlap the LEDs  6117 , respectively in the plan view. The number and the arrangement of the diffuser lenses  637  in the backlight unit  6112  are the same as the number and the arrangement of the LEDs  6117  that are described earlier. The diffuser lenses  637  are configured to diffuse and pass the light rays emitted by the LEDs  6117  and having high directivity. The directivity of the light rays emitted by the LEDs  6117  is reduced when passing through the diffuser lenses  637  and then the light rays are directed to the optical members  6115 . Even if the LEDs  6117  are arranged at larger intervals, each area between the adjacent LEDs  6117  is less likely to be recognized as a dark spot. Namely, the diffuser lenses  637  perform optical functions as fake light sources for diffusing the light rays from the LEDs  6117 . According to the configuration, the number of the LEDs  6117  can be reduced. The diffuser lenses  637  are disposed substantially concentrically with the respective LEDs  6117  in the plan view. 
     As illustrated in  FIGS. 60 and 61 , the diffuser lenses  637  include surfaces facing the rear side and opposed to the LED boards  6118  (the LEDs  6117 ). The surfaces are referred to as light entering surfaces  637   a  through which the light rays from the LEDs  6117  enter. The diffuser lenses  637  include surfaces facing the front side and opposed to the optical members  6115 . The surfaces are referred to as light exiting surfaces  637   b  (light emitting surfaces) through which the light rays exit. The light entering surfaces  637   a  are basically parallel to the plate surfaces of the LED boards  6118  (the X-axis direction and the Y-axis direction). The diffuser lenses  637  include light entering-side recesses  637   c  in areas overlapping the LEDs  6117  in the plan view, that is, the light entering surfaces  637   a  include sloped surfaces that are angled relative to optical axes of the LEDs  6117  (the Z-axis direction). Each light entering-side recess  637   c  has a cone shape with a V shape cross section. The light entering-side recesses  637   c  are formed substantially concentrically with the respective diffuser lenses  637 . The light rays emitted by the LEDs  6117  entering the light entering-side recesses  637   c  are refracted at wide angles by the sloped surfaces and enter the diffuser lenses  637 . Mounting legs  637   d  protrude from the light entering surfaces  637   a . The mounting legs  637   d  are mounting structures for mounting the diffuser lenses  637  to the LED boards  6118 . Each light exiting surface  637   b  is a spherical surface of a flattened sphere. According to the configuration, the light rays refracted and exiting from the diffuser lens  637  spread in wide angles. The diffuser lenses  637  include substantially cone shaped light exiting-side recesses  637   e  in areas of the light exiting surfaces  637   b  overlapping the LEDs  6117  in the plan view. With the light exiting-side recesses  637   e , many light rays from the LEDs  6117  are refracted with wide angles and exit. 
     The reflection sheet  638  includes a white surface having high light reflectivity. As illustrated in  FIGS. 56 to 59 , the reflection sheet  638  has a size to cover a substantially entire area of the inner surface of the chassis  6114 , that is, to collectively cover all the LED boards  6118  that are two-dimensionally arranged along the bottom  6114   a . The reflection sheet  638  reflects the light rays inside the chassis  6114  toward the front (the light exiting side, the optical member  6115  side). The reflection sheet  638  has a cone-like overall shape. The reflection sheet  638  includes a bottom-side reflecting portion  638   a , four projected reflecting portions  638   b , and extended portions  638   c  (peripheral portions). The bottom-side reflecting portion  638   a  extends along the LED boards  6118  and the bottom  6114   a . The bottom-side reflecting portion  638   a  has a size to collectively cover substantially entire areas of the LED boards  6118 . The projected reflecting portions  638   b  project frontward from the outer edges of the bottom-side reflecting portion  638   a . The projected reflecting portions  638   b  are angled to the bottom-side reflecting portion  638   a . The extended portions  638   c  extend outward from the outer edges of the projected reflecting portions  638   b . The extended portions  638   c  are placed on the first steps  6114   c   1 . 
     As illustrated in  FIGS. 57 to 59 , the bottom-side reflecting portion  638   a  of the reflection sheet  638  is disposed over the front surfaces of the LED boards  6118 , that is, the mounting surfaces  6118   a  of the LED boards  6118  on the front side. Because the bottom-side reflecting portion  638   a  extends parallel to the plate surfaces of the bottom  6114   a  of the chassis  6114  and the optical members  6115 , a distance between the bottom-side reflecting portion  638   a  and the optical member  6115  in the Z-axis direction is substantially constant for the entire area in the plane. The bottom-side reflecting portion  638   a  includes insertion holes  638   d  (light source insertion holes) at positions overlapping the LEDs  6117  in the plan view, respectively. The insertion holes  638   d  are through holes through which the respective LEDs  6117  and the respective diffuser lenses  637  are inserted. The insertion holes  638   d  are arranged in the X-axis direction and the Y-axis direction in a matrix to correspond to the LEDs  6117  and the diffuser lenses  637 . The bottom-side reflecting portion  638   a  is disposed to overlap the LEDs  6117  and the diffuser lenses  637  in the plan view and thus referred to as “an LED arranged area (a light source arranged area)” of the reflection sheet  638 . The projected reflecting portions  638   b  linearly extend from bases of projection to distal ends. The projected reflecting portions  638   b  are angled to the plate surfaces of the bottom-side reflecting portion  638   a  and the optical member  6115 . A distance between each projected reflecting portion  638   b  and the optical member  6115  in the Z-axis direction continuously and gradually decreases from the base of projection to the distal end. The distance is the maximum at the base of projection (about equal to the distance between the bottom-side reflecting portion  638   a  and the optical member  6115  in the Z-axis direction). The distance is the minimum at the distal end. The projected reflecting portions  638   b  are disposed not to overlap the LEDs  6117  in the plan view and referred to as “LED non-arranged areas (light source non-arranged areas)” of the reflection sheet  638 . 
     As illustrated in  FIGS. 60 and 61 , a retroreflector  6131  in this embodiment is disposed outer than the outer edges of the projected reflecting portions  638   b  of the reflection sheet  638  such that the retroreflector  6131  does not overlap the projected reflecting portions  638   b . Specifically, the retroreflector  6131  is disposed not to overlap a center portion  6129  of the wavelength converting sheet  6120  but to overlap the peripheral portion  6130  for the entire periphery on the front side. The retroreflector  6131  is disposed to overlap the extended portions  638   c  that are located outer than the projected reflecting portions  638   b  of the reflection sheet  638  in the plan view. According to the configuration, some of light rays around the peripheral portion  6130  of the wavelength converting sheet  6120  are retroreflected to the rear side by the retroreflector  6131 . The retroreflected light rays are more likely to pass through the wavelength converting sheet  6120  again and more likely to be converted to light rays with other wavelengths. Even if light rays leak through a gap between the sidewall  6114   c  of the chassis  6114  and the extended portion  638   c  of the reflection sheet  638  or through a bap between the diffuser plate  639  and the extended portion  638   c , the light rays exiting from the peripheral portion of the backlight unit  6112  are less likely to be in a color similar to the color of the light rays from the LEDs  6117 , that is, less likely to be bluish. This configuration can reduce the color unevenness. 
     Some of the light rays that have passed through the wavelength converting sheet  6120  are not directly included in the emitting light from the backlight unit  6112 . Such light rays may be retroreflected to the reflection sheet  638  and included in the emitting light from the backlight unit  6112 . The light lays tend to be retroreflected for the larger number of times in the peripheral portion in which the projected reflecting portions  638   b  are disposed than in the center portion in which the bottom-side reflecting portion  638   a  of the reflection sheet  638  is disposed. The retroreflected light rays in the peripheral portion pass through the wavelength converting sheet  6120  for the larger number of times. Namely, the retroreflected light rays in the peripheral portion are more likely to be converted to the light rays with other wavelengths. The retroreflector  6131  is disposed outer than the outer edges of the projected reflecting portions  638   b  not to overlap the projected reflecting portions  638   b . Therefore, the light rays reflected by the projected reflecting portions  638   b  are less likely to be retroreflected for the excessive number of times. Therefore, the emitting light rays from the backlight unit  6112  around the projected reflecting portions  638   b  are less likely to be in a color similar to the color that makes the complementary color pair with the color of light rays emitted by the LEDs  6117  (a color of light rays converted to light rays with other wavelengths by the wavelength converting sheet  6120 ), that is, less likely to be yellowish. This configuration is preferable for reducing the color unevenness. Furthermore, the retroreflector  6131  is disposed to extend for the entire periphery of the peripheral portion  6130  of the wavelength converting sheet  6120 . Even if a gap is created between the components of the backlight unit  6112 , regardless of the location of the gap between the components of the backlight unit  612  on the periphery, the color unevenness resulting from the leak of light through the gap can be properly reduced. 
     This embodiment has the configuration described above. Next, functions of this embodiment will be described. When the liquid crystal display device  6110  having the configuration described above is turned on, the driving of the liquid crystal panel  6111  is controlled by the panel controller circuit of the controller board that is not illustrated. Furthermore, driving power is supplied from the LED driver circuit of the LED driver circuit board that is not illustrated to the LEDs  6117  on the LED boards  6118  and the driving of the LEDs  6117  is controlled. As illustrated in  FIGS. 58 and 59 , the light rays from the LEDs  6117  that are turned on are directly applied to the optical members  6115  or reflected by the reflection sheet  638  and indirectly applied to the optical members  6115 . After the predefined optical effects are exerted by the optical members  6115 , the light rays are applied to the liquid crystal panel  6111  and used for displaying an image in the display are of the liquid crystal panel  6111 . Functions of the backlight unit  6112  will be described. 
     As illustrated in  FIGS. 58 and 59 , the diffusing effects are exerted on the blue light rays emitted by the LEDs  6117  by the diffuser plate  639  of the optical members  6115  and some of the blue light rays are converted to the green light rays and the red light rays by the wavelength converting sheet  6120 . The green light rays and the red light rays (secondary light rays) obtained through the wavelength conversion and the blue light rays (primary light rays) from the LEDs  6117  form substantially white illumination light. The isotropic light collecting effects are exerted on the blue light rays from the LEDs  6117  and the green light rays and the red light rays obtained through the wavelength conversion with respect to the X-axis direction and the Y-axis direction by the micro lens sheet  6121 . The selective light collecting effects (the anisotropic light collecting effects) are exerted on the light rays on which the isotropic light collecting effects are exerted by the prism sheet  6122  with respect to the Y-axis direction. Specific polarized light rays (p-wave) among the light rays that have exited from the prism sheet  6122  are selectively passed through the reflective type polarizing sheet  6123  and directed to the liquid crystal panel  6111 . Specific polarized light rays (s-wave) other than the specific polarized light rays described above are selectively reflected to the rear side. The s-wave reflected by the reflective type polarizing sheet  6123 , the light rays reflected to the rear side without the light collecting effects by the micro lens sheet  6121  or the prism sheet  6122 , or the light rays reflected to the rear side by the diffuser sheet  628  are reflected again by the reflection sheet  638  to travel to the front side. According to the direct type backlight unit  6112 , the light rays emitted by the LEDs  6117  exit from the backlight unit  6112  without passing through the light guide plate or other members used in the edge light type backlight unit. Therefore, high light use efficiency can be achieved. 
     The light rays emitted by the LEDs  6117  travel through the light exiting path described above are included in the emitting light from the backlight unit  6112 . In the peripheral portion of the backlight unit  6112 , a gap may be created between the components of the backlight unit  6112  and light rays may leak through the gap. Specifically, a gap may be created between the sidewall  6114   c  of the chassis  6114  and the extended portion  638   c  of the reflection sheet  638  or between the diffuser plate  639  and the extended portion  638   c  due to backlash between the components. If such a gap is created, the blue light rays that have not been converted by the wavelength converting sheet  6120  may leak. The peripheral portion of the backlight unit  6112  looks more bluish than the center portion, that is, the color unevenness may be observed. As illustrated in  FIGS. 60 and 61 , the retroreflector  6131  is disposed over the wavelength converting sheet  6120  in this embodiment to overlap the peripheral portion  6130  but not to overlap the center portion  6129 . Therefore, some of the light rays around the peripheral portion  6130  are retroreflected to the rear side by the retroreflector  6131 . The light rays that are retroreflected by the retroreflector  6131  include the leaking light rays and the blue light rays that are not the leaking light and not yet converted. The light rays that are retroreflected to the rear side by the retroreflector  6131  are more likely to pass through the wavelength converting sheet  6120  and thus more likely to be converted to light rays with other wavelengths. Therefore, even if the leaking of the light rays occurs, the exiting light rays from the peripheral portion of the backlight unit  6112  are less likely to be in the color similar to the color of the light rays emitted by the LEDs  6117 , that is, less likely to be bluish. The color unevenness can be reduced. 
     The distance between each projected reflecting portion  638   b  of the reflection sheet  638  and the optical member  6115  is smaller than the distance between the bottom-side reflecting portion  638   a  and the optical member  6115 . The light rays reflected by the projected reflecting portions  638   b  tend to be retroreflected for the larger number of times in comparison to the light rays reflected by the bottom-side reflecting portion  638   a . Namely, the light rays reflected by the projected reflecting portions  638   b  tend to pass through the wavelength converting sheet  6120  for the larger number of times. The retroreflector  6131  is disposed to overlap outer than the outer edges of the projected reflecting portions  638   b  (to overlap the extended portions  638   c ) of the reflection sheet  638 . Therefore, the light rays reflected by the projected reflection portions  638   b  are less likely to be excessively retroreflected. The exiting light rays around the projected reflecting portions  638   b  of the backlight unit  6112  are less likely to be yellowish. This configuration is preferable for reducing the color unevenness. 
     In this embodiment, as described above, the chassis  6114  includes the bottom  6114   a  disposed on the side opposite from the light emitting surface  6117   a  sides of the LEDs  6117 . This embodiment includes the reflection sheet  638  (the reflection member) configured to reflect the light rays from the LEDs  6117 . The reflection sheet  638  includes at least the bottom-side reflecting portion  638   a  and the projected reflecting portions  638   b . The bottom-side reflecting portion  638   a  is disposed along the bottom  6114   a . The projected reflecting portions  638   b  project from the bottom-side reflecting portion  638   a  to the light exiting side. The wavelength converting sheet  6120  is disposed opposite and away from the light emitting surfaces  6117   a  of the LEDs  6117  on the light exiting side. The light rays emitted by the LEDs  6117  that are held in the chassis  6114  are reflected by the bottom-side reflecting portion  638   a  and the projected reflecting portions  638   b  of the reflection sheet  638 . The light rays are converted to light rays with other wavelengths by the phosphors contained in the wavelength converting sheet  6120  that is disposed opposite and away from the light emitting surfaces  6117   a  of the LEDs  6117  on the light exiting side and exit the wavelength converting sheet  6120 . According to the direct type backlight unit  6112 , the light rays from the LEDs  6117  exit without passing through the light guide plate or other components used in the edge light type backlight unit. Therefore, the high light use efficiency can be achieved. 
     The retroreflector  631  is disposed outer than the outer edges of the projected reflecting portions  638   b  not to overlap the projected reflecting portions  638   b . Some of the light rays that have passed through the wavelength converting sheet  6120  may not be directly included in the exiting light from the backlight unit  6112 . Some of the light rays may be retroreflected and returned to the reflection sheet  638  and then included in the exiting light from the backlight unit  6112 . The light rays in the peripheral portion in which the projected reflecting portions  638   b  are disposed tend to be retroreflected for the larger number of times in comparison to the center portion in which the bottom-side reflecting portion  638   a  of the reflection sheet  638  is disposed. Therefore, the light rays in the peripheral portion pass through the wavelength converting sheet  6120  for the larger number of times. Namely, the light rays in the peripheral portion are more likely to be converted to light rays with other wavelengths. The retroreflector  631  is disposed outer than the outer edges of the projected reflecting portions  638   b  not to overlap the projected reflecting portions  638   b . Therefore, the light rays reflected by the projected reflecting portions  638   b  are less likely to be excessively retroreflected. 
     Twenty-Seventh Embodiment 
     A twenty-seventh embodiment of the present invention will be described with reference to  FIG. 62 . The twenty-seventh embodiment includes a retroreflector having a configuration different from the twenty-fifth embodiment described above. Configurations, functions, and effects similar to those of the twenty-fifth embodiment will not be described. 
     As illustrated in  FIG. 62 , a retroreflector  6231  in this embodiment includes a micro lens portion  640  (a refractive optical component) configured to exert refractive effects on light rays. Specifically, the retroreflector  6231  includes a base portion  6232  that is a sheet (a film) and the micro lens portion  640  on the front plate surface of the base portion  6232 . The micro lens portion  640  includes unit micro lenses  640   a  that arranged in a matrix each line along the X-axis direction and each line along the Y-axis direction include a large number of the unit micro lenses  640   a . Each unit micro lens  640   a  has a round shape in a plan view. Each unit micro lens  640   a  is a convex lens having a hemisphere overall shape. The retroreflector  6231  has a configuration similar to that of a micro lens sheet, which is one kind of general optical members (e.g., the micro lens sheet  621  in the twenty-fifth embodiment). The retroreflector  6231  can be produced using such a general optical member and thus it is preferable for reducing the production cost. 
     The micro lens portion  640  of the retroreflector  6231  is configured to refract light rays around an peripheral portion of a wavelength converting sheet, which is not illustrated, and to retroreflect some of the light rays to the rear side. According to the configuration, color unevenness created by light rays leaking through a gap between components of the backlight unit is properly reduced. The micro lens portion  640  retroreflect some of the light rays to the rear side without absorbing the light rays. Therefore, high light use efficiency can be achieved. Because the micro lens portion  640  is less likely to absorb the light rays, chronological deterioration of performance due to the absorption of the light rays is less likely to occur. This configuration is preferable for enhancing the longevity of the product. 
     In this embodiment, as described above, the retroreflector  6231  includes the micro lens portion  640  (the refractive optical component) configured to refract light rays. The light rays around the peripheral portion of the wavelength converting sheet are refracted by the micro lens portion  640  of the retroreflector  6231  to retroreflect some of the light rays to the side opposite from the light exiting side. According to the configuration, the color unevenness due to the leak of light rays through the gap between the components of the backlight unit can be properly reduced. Because the micro lens portion  640  retroreflect some of the light rays that are refracted by the micro lens portion  640  to the side opposite from the light exiting side without absorbing the light rays, high light use efficiency can be achieved. Furthermore, the chronological deterioration of performance is less likely to occur. 
     Twenty-Eighth Embodiment 
     A twenty-eighth embodiment of the present invention will be described with reference to  FIG. 63 . The twenty-eighth embodiment includes a retroreflector having a configuration different from the twenty-fifth embodiment described above. Configurations, functions, and effects similar to those of the twenty-fifth embodiment will not be described. 
     As illustrated in  FIG. 63 , a retroreflector  6331  in this embodiment includes a prism portion  641  (a refractive optical component) configured to exert refractive effects on light rays. Specifically, the retroreflector  6331  includes a base  6332  that is a sheet (a film) and the prism portion  641  formed on the front surface of the base  6332 . The prism portion  641  includes unit prisms  641   a  that extend along the X-axis direction or the Y-axis direction. A large number of the unit prisms  641   a  are arranged along the Y-axis direction or the X-axis direction. Each unit prism  641   a  has a rail shape (a linear shape) parallel to the X-axis direction or the Y-axis direction in the plan view. Each unit prism  641   a  has an isosceles triangular cross-section along the Y-axis direction or the X-axis direction. The retroreflector  6331  is one kind of general optical members (e.g., the prism sheet  622  in the twenty-fifth embodiment). The retroreflector  6331  can be produced using such a general optical member and thus it is preferable for reducing the production cost. 
     The prism portion  641  of the retroreflector  6331  is configured to refract light rays around an peripheral portion of a wavelength converting sheet, which is not illustrated, and to retroreflect some of the light rays to the rear side. According to the configuration, color unevenness created by light rays leaking through a gap between components of the backlight unit is properly reduced. The prism portion  641  retroreflect some of the light rays to the rear side without absorbing the light rays. Therefore, high light use efficiency can be achieved. Because the prism portion  641  is less likely to absorb the light rays, chronological deterioration of performance due to the absorption of the light rays is less likely to occur. This configuration is preferable for enhancing the longevity of the product. 
     Twenty-Ninth Embodiment 
     A twenty-ninth embodiment of the present invention will be described with reference to  FIG. 64 . The twenty-ninth embodiment includes a retroreflector having a configuration different from the twenty-fifth embodiment described above. Configurations, functions, and effects similar to those of the twenty-fifth embodiment will not be described. 
     As illustrated in  FIG. 64 , a retroreflector  6431  in this embodiment is disposed to overlap sections of an peripheral portion  6430  of a wavelength converting sheet  6420  excluding a long edge section on the LED  6417  side or a LED board  6418  side. Namely, the retroreflector  6431  is disposed to overlap a pair of short edge sections and a long edge section on a side opposite from the LED  6417  side or the LED board  6418  side. The long edge section of the peripheral portion  6430  of the wavelength converting sheet  6420  on the LED  6417  side or the LED board  6418  side is parallel to a light entering end surface of a light guide plate that is not illustrated. Other sections of the peripheral portion  6430  are parallel to non-light-entering end surfaces of the light guide plate. The retroreflector  6431  is disposed to overlap the sections of the peripheral portion  6430  of the wavelength converting sheet  6420  parallel to the non-light-entering end surfaces of the light guide plate. According to the configuration, some of the light rays around the sections of the peripheral portion  6430  of the wavelength converting sheet  6420  parallel to the non-light-entering end surfaces of the light guide plate are retroreflected to the rear side by the retroreflector  6431 . Even if the light rays transmitting through the light guide plate exit the light guide plate through the non-light-entering end surfaces leak through a gap between components of the backlight unit, color unevenness is properly reduced. In  FIG. 64 , the LEDs  6417 , an LED board  6418 , and the wavelength converting sheet  6420  are depicted with two-dot chain lines. 
     Other Embodiments 
     The present invention is not limited to the above embodiments described in the above sections and the drawings. For example, the following embodiments may be included in technical scopes of the technology. 
     (1) In each of the first, the third, and the fifth embodiments, the complementary color members  22  are bonded to the frame  16  with the fixing member such as a double-sided adhesive tape. In each of the second, the fourth, and the sixth embodiments, the complementary color members  23  are bonded to the reflection sheet  20 A with the fixing member such as a double-sided adhesive tape. However, the present invention is not limited to those. For example, a paint in a predefined color (a color that makes a complementary color pair with blue that is the color of the primary light rays from the LEDs  17  (the reference color)) may be directly applied to the frame portion  161  of the frame  16  or the end of the reflection sheet  20 A to form the complementary color portion  22  or  23 . 
     (2) In each of the first to the sixth embodiments, each complementary color member has the continuous longitudinal shape. The present invention is not limited to that. For example, complementary color members may be provided only in front of the LEDs  17 . 
     (3) In each of the first to the sixth embodiments, each complementary color member is formed by applying a paint to the surface of the base. However, a complementary color member including a base and pigments contained in the base with a predefined concentration may be used. The base may be a transparent base having light transmissivity (e.g., cellophane). The pigments may have properties for selectively absorbing light in a specific wavelength range. 
     (4) In each of the above embodiments, the LEDs configured to emit light rays in a single color of blue are used as the light source. However, LEDs configured to emit light in a color other than blue may be used as a light source. In such a case, the color of the complementary color members may be altered according to the color of the light from the LEDs. For example, LEDs configured to emit magenta light and complementary color portions including green surfaces may be used. In this case, green phosphors may be used for phosphors contained in a phosphor sheet (a wavelength converting member) so that a lighting unit emits white light. 
     (5) Other than the above (4), LEDs configured to emit violet light and complementary color members including chartreuse surfaces may be used. In this case, yellow phosphors and green phosphors with a predefined ratio may be used for phosphors contained in a phosphor sheet (a wavelength converting member) so that a lighting unit emits white light. 
     (6) Other than the above (4) or (5), LEDs configured to emit cyan light and complementary color members including red surfaces may be used. In this case, red phosphors may be used for phosphors contained in a phosphor sheet (a wavelength converting member) so that a lighting unit emits white light. 
     (7) In each of the first to the sixth embodiments, the quantum dot phosphors are contained in the phosphor sheet or the phosphor tube (a wavelength converting member). However, other type of phosphors may be contained in the phosphor sheet or the phosphor tube (the wavelength converting member). For example, sulfide phosphors may be contained in the optical sheet or the phosphor tube (the wavelength converting member). Specifically, SrGa 2 S 4 :Eu 2+  may be used for the green phosphors and (Ca, Sr, Ba)S:Eu 2+  may be used for the red phosphors. 
     (8) Other than the above (7), (Ca, Sr, Ba) 3 SiO 4 :Eu 2+ , β-SiAlON:Eu 2+ , or Ca 3 Sc 2 Si 3 O 12 :Ce 3+  may be used for the green phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). (Ca, Sr, Ba) 2 SiO 5 N 8 :Eu 2+  or CaAlSiN 3 :Eu 2+  may be used for the red phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce 3+  (so-called YAG:Ce 3+ ), α-SiAlON:Eu 2+ , or (Ca, Sr, Br) 3 SiO 4 :Eu 2+  may be used for the yellow phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). Other than the above, a complex fluoride fluorescent material (e.g., manganese-activated potassium fluorosilicate (K 2 TiF 6 )) may be used for the phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). 
     (9) Other than the above (7) and (8), organic phosphors may be used for the phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). The organic phosphors may be low molecular organic phosphors including triazole or oxadiazole as a basic skeleton. 
     (10) Other than the above (7), (8), and (9), phosphors configured to convert wavelengths through energy transfer via dressed photons (near-field light) may be used for the phosphors contained in the phosphor sheet or the phosphor tube (the wavelength converting member). Preferable phosphors of this kind may be phosphors including zinc oxide quantum dots (ZnO-QD) with diameters from 3 nm to 5 nm (preferably about 4 nm) and DCM pigments dispersed in the zinc oxide quantum dots. 
     (11) In each of the seventh to the eighteenth embodiments, the end surface wavelength converting sheet (a wavelength converting member) and the end surface reflection sheet have the lengths to extend for the total length of the sections of the peripheral surfaces of the light guide plate. The end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet may have lengths smaller than the total length of the sections of the peripheral surfaces of the light guide plate. Namely, the end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet may partially overlap the sections of the peripheral surfaces of the light guide plate in the length direction. In such a case, it is preferable that the end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet overlap four corners of the peripheral surfaces of the light guide plate. 
     (12) In each of the seventh to the eighteenth embodiments, the end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet have the widths to cover the sections of the peripheral surfaces of the light guide plate for the entire heights of the sections. However, the end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet may have widths smaller than the heights of the sections of the peripheral surfaces of the light guide plate. Namely, the end surface wavelength converting sheet (the wavelength converting member) and the end surface reflection sheet may partially overlap the sections of the peripheral surfaces of the light guide plate with respect to the height direction of the sections. 
     (13) In each of the seventh to the eighteenth embodiments, the end surface reflection sheet is provided separately from the chassis. However, the end surface reflection sheet may be omitted and at least the sidewall of the chassis may be colored in white having high light reflectivity to reflect the light rays that have passed through the end surface wavelength converting sheet. Namely, the end surface reflection sheet can be omitted by arranging the sidewall of the chassis having the light reflectivity to overlap the outside of the end surface wavelength converting sheet (on the side opposite from the non-light-entering end surface side). In this case, it is preferable to set the sidewall having the light reflectivity in contact with the end surface wavelength converting sheet. 
     (14) Examples of the light guide plate-side adhesive layer and the end surface reflection sheet-side adhesive layer in each of the seventh to the eighteenth embodiments include a transparent optical adhesive film such as an OCA, a substantially transparent adhesive, a substantially transparent light curing resin (including an ultraviolet curing resin), and a substantially transparent double-sided tape. Other than the above, an appropriate method may be used. 
     (15) In each of the seventh to the eighteenth embodiments, the plate surface wavelength converting sheet and the end surface wavelength converting sheet are prepared from the same base material. However, the plate surface wavelength converting sheet and the end surface wavelength converting sheet may be prepared from different base materials. In such a case, contents of phosphors, ratios of the phosphors, kinds of the phosphors, colors of light rays emitted by the phosphors (peak wavelengths and half width of each peak of emission spectrum) may be different between the plate surface wavelength converting sheet and the end surface wavelength converting sheet. As long as the color of the secondary light rays from the end surface wavelength converting sheet is similar to the color of the secondary light rays from the plate surface wavelength, a small difference in color is acceptable. 
     (16) In each of the ninth to the eleventh embodiments, the color of the secondary light rays obtained through the wavelength conversion by the end surface wavelength converting member can be slightly different from the color of the secondary light from the plate surface wavelength converting sheet as long as they are similar. 
     (17) In each of the ninth to the eleventh embodiments, the end surface wavelength converting member is applied to either one of the non-light-entering end surface of the light guide plate and the end surface reflection sheet. The end surface wavelength converting member may be applied to both the non-light-entering end surface of the light guide plate and the end surface reflection sheet. 
     (18) In the twelfth embodiment, the plate surface wavelength converting sheet and the end surface wavelength converting sheet are provided as a single component. However, any one of the plate surface wavelength converting sheet and the end surface wavelength converting sheet may be provided as a single component. 
     (19) In the thirteenth embodiment, the opposite end surface wavelength converting sheet is omitted and the end surface reflection sheet is disposed similarly to the first embodiment. However, the opposite end surface reflection sheet may be omitted. 
     (20) The configuration of the eighth embodiment may be combined with the configuration of any one of the ninth and the twelfth to the sixteenth embodiments. The configuration of the ninth embodiment may be combined with the configuration of any one of the twelfth to the sixteenth embodiments. The configuration of the tenth embodiment may be combined with the configuration of any one of the twelfth to the sixteenth embodiments. The configuration of the eleventh embodiment may be combined with the configuration of any one of the twelfth to the sixteenth embodiments. The configuration of the twelfth embodiment may be combined with the configuration of the fifteenth embodiment. The configuration of the thirteenth embodiment may be combined with the configuration of the fifteenth embodiment. The configuration of the fourteenth embodiment may be combined with the configuration of the fifteenth embodiment. 
     (21) In each of the seventh to the eighteenth embodiments, the LEDs configured to emit the light rays in a single color of blue are used as the light source. However LEDs configured to emit light rays in a color other than blue may be used as a light source. In such a case, the color of the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet (the end surface wavelength converting members) may be altered according to the color of the light rays from the LEDs. For example, if LEDs configured to emit magenta light rays, green phosphors that exhibit light rays in green that makes a complementary color pair with magenta may be used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet (the end surface wavelength converting sheets). According to the configuration the backlight emits white illumination light (exiting light). 
     (22) In each of the above embodiments, the plate surface wavelength converting sheet and the end surface wavelength converting sheet (the end surface wavelength converting members) contain the green phosphors and the red phosphors. However, the plate surface wavelength converting sheet and the end surface wavelength converting sheet (the end surface wavelength converting members) may contain yellow phosphors or contain the red phosphors and the green phosphors in addition to the yellow phosphors. Specifically, (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce 3+  (so-called YAG:Ce 3+ ), α-SiAlON:Eu 2+ , or (Ca, Sr, Br) 3 SiO 4 :Eu 2+  may be used for the yellow phosphors contained in the end surface wavelength converting member in each of the third to the fifth embodiments. 
     (23) In each of the above embodiments (except for the ninth to the eleventh embodiments), the quantum dot phosphors used for the phosphors contained the plate surface wavelength converting sheet and the end surface wavelength converting sheet are the core-shell type phosphors including CdSe and ZnS. However, core type quantum dot phosphors each having a single internal composition may be used. For example, a material (CdSe, CdS, ZnS) prepared by combining Zn, Cd, Hg, or Pb that could be a divalent cation with O, S, Se, or Te that could be a dianion may be singly used. A material (indium phosphide (InP), gallium arsenide (GaAs)) prepared by combining Ga or In that could be a tervalent cation with P, As, or Sb that could be a tervalent anion or chalcopyrite type compounds (CuInSe2) may be singly used. Other than the core-shell type quantum dot phosphors and the core type quantum dot phosphors, alloy type quantum dot phosphors may be used. Furthermore, quantum dot phosphors that do not contain cadmium may be used. 
     (24) In each of the above embodiments (except for the ninth to the eleventh embodiments), the quantum dot phosphors used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet are the core-shell type quantum dot phosphors including CdSe and ZnS. However, core-shell type quantum dot phosphors including a combination of other materials may be used. 
     (25) In each of the above embodiments, the plate surface wavelength converting sheet and the end surface wavelength converting sheet contain the quantum dot phosphors. However, the plate surface wavelength converting sheet and the end surface wavelength converting sheet may contain other type of phosphors. For example, sulfide phosphors may be used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. Specifically, SrGa 2 S 4 :Eu 2+  may be used for the green phosphors and (Ca, Sr, Ba)S:Eu 2+  may be used for the red phosphors. 
     (26) Other than the above (25), (Ca, Sr, Ba) 3 SiO 4 :Eu 2+ , β-SiAlON:Eu 2+ , or Ca 3 Sc 2 Si 3 O 12 :Ce 3+  may be used for the green phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. (Ca, Sr, Ba) 2 SiO 5 N 8 :Eu 2+  or CaAlSiN 3 :Eu 2+  may be used for the red phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce 3+  (so-called YAG:Ce 3+ ), α-SiAlON:Eu 2+ , or (Ca, Sr, Br) 3 SiO 4 :Eu 2+  may be used for the yellow phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. Other than the above, a complex fluoride fluorescent material (e.g., manganese-activated potassium fluorosilicate (K 2 TiF 6 )) may be used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. 
     (27) Other than the above (25) and (26), organic phosphors may be used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. The organic phosphors may be low molecular organic phosphors including triazole or oxadiazole as a basic skeleton. 
     (28) Other than the above (25), (26), and (27), phosphors configured to convert wavelengths through energy transfer via dressed photons (near-field light) may be used for the phosphors contained in the plate surface wavelength converting sheet and the end surface wavelength converting sheet. Preferable phosphors of this kind may be phosphors including zinc oxide quantum dots (ZnO-QD) with diameters from 3 nm to 5 nm (preferably about 4 nm) and DCM pigments dispersed in the zinc oxide quantum dots. 
     (29) In each of the nineteenth to the twenty-fourth embodiments, one of the long end surfaces among the end surfaces of the light guide plate is configured as the light entering surface. However, both long end surfaces may be configured as light entering surfaces or one or both of the short end surfaces may be configured as light entering surfaces. 
     (30) In each of the nineteenth to the twenty-fourth embodiments, the first complementary color members  523  and the second complementary color members  524  are separately used. However, the first complementary color members  523  and the second complementary color members  524  may be used in combination. 
     (31) In each of the nineteenth to the twenty-fourth embodiments, the first complementary color members  523  and the second complementary color members  524  may be positioned relative to the light guide plate  19  or the reflection sheet  20  by partially fixing with the fixing members such as the double-sided adhesive tapes to reduce displacement relative to the light guide plate  19 . 
     (32) In each of the nineteenth to the twenty-fourth embodiments, the LEDs configured to emit light rays in a single color of blue are used as a light source that emits primary light rays. However, LEDs configured to emit light rays in a color other than blue may be used as a light source. For example, LEDs configured to emit magenta light rays as primary light rays may be used. In this case, green phosphors may be used for phosphors contained in the phosphor sheet (the wavelength converting member) and the complementary color member so that the lighting unit emits white light. 
     (33) In each of the nineteenth to the twenty-fourth embodiments, the quantum dot phosphors used for the phosphors contained in the phosphor sheet (the wavelength converting member) and the complementary color member can be core-shell type quantum dot phosphors or core type quantum dot phosphors each having a single internal composition. 
     (34) In each of the nineteenth to the twenty-fourth embodiments, the quantum dot phosphors are contained in the phosphor sheet (the wavelength converting member) and the complementary color member. In other embodiments, other types of phosphors may be contained in the phosphor sheets (the wavelength converting members) and the complementary color members. For example, sulfide phosphors may be used for the phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. Specifically, SrGa 2 S 4 :Eu 2+  may be used for the green phosphors and (Ca, Sr, Ba)S:Eu 2+  may be used for the red phosphors. 
     (35) Other than the above (34), (Ca, Sr, Ba) 3 SiO 4 :Eu 2+ , β-SiAlON:Eu 2+ , or Ca 3 Sc 2 Si 3 O 12 :Ce 3+  may be used for the green phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. (Ca, Sr, Ba) 2 SiON 5 :Eu 2+  or CaAlSiN 3 :Eu 2+  may be used for the red phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce 3+  (so-called YAG:Ce 3+ ), α-SiAlON:Eu 2+ , or (Ca, Sr, Br) 3 SiO 4 :Eu 2+  may be used for the yellow phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. Other than the above, a complex fluoride fluorescent material (e.g., manganese-activated potassium fluorosilicate (K 2 TiF 6 )) may be used for the phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. 
     (36) Other than the above (34) and (35), organic phosphors may be used for the phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. The organic phosphors may be low molecular organic phosphors including triazole or oxadiazole as a basic skeleton. 
     (37) Other than the above (34), (35), and (36), phosphors configured to convert wavelengths through energy transfer via dressed photons (near-field light) may be used for the phosphors contained in the phosphor sheets (the wavelength converting members) and the complementary color members. Preferable phosphors of this kind may be phosphors including zinc oxide quantum dots (ZnO-QD) with diameters from 3 nm to 5 nm (preferably about 4 nm) and DCM pigments dispersed in the zinc oxide quantum dots. 
     (38) In each of the twenty-fifth to the twenty-ninth embodiments, the retroreflector includes the light scattering particles and the micro lens portion or the prism portion. The retroreflector may include a reflective type polarizer (a refractive optical component) for refracting and reflecting light rays. Such a reflective type polarizer has a configuration similar to that of the reflective type polarizing sheet in the twenty-fifth embodiment. The retroreflector can be produced using the reflective type polarizing sheet. This configuration is preferable for reducing the production cost. The retroreflector may have a configuration including a refractive optical component other than the reflective type polarizer. 
     (39) In each of the twenty-fifth to the twenty-ninth embodiments, the retroreflector is disposed to overlap the wavelength converting sheet on the front side. However, the retroreflector may be disposed to overlap the wavelength converting sheet on the rear side. 
     (40) In each of the twenty-fifth to the twenty-ninth embodiments, the retroreflector is disposed to directly on the wavelength converting sheet. However, the retroreflector may be disposed over the wavelength converting sheet via other optical members (such as the micro lens sheet, the prism sheet, the reflective type polarizing sheet, and the diffuser plate). 
     (41) In each of the twenty-fifth to the twenty-ninth embodiments, the retroreflector is disposed in the area across the inner edges of the frame in the edge-light type backlight unit. The dimensions of the portions of the retroreflector extending from the inner edges of the frame can be altered as appropriate. The retroreflector may be disposed such that the inner edges of the retroreflector may be flush with the inner edges of the frame. The retroreflector may be disposed such that the inner edges of the retroreflector are outer than the inner edges of the frame. 
     (42) The number, the arrangement, and the size in the plan view of the positioning structures for positioning the optical members and the retroreflector relative to the frame (the positioning portions, the first mating positioning portions, and the second mating positioning portions) may be altered from those of the twenty-fifth embodiment as appropriate. 
     (43) In the twenty-ninth embodiment, the retroreflector is disposed in the sections of the peripheral portion of the wavelength converting sheet parallel to the non-light-entering end surfaces of the light guide plate in the edge-light type backlight unit. However, retroreflectors may be disposed in the sections of the peripheral portion of the wavelength converting sheet parallel to a pair of the non-light-entering end surfaces of the light guide plate. Alternatively, a retroreflector may be disposed in the section of the peripheral portion of the wavelength converting sheet parallel to the non-light-entering opposite end surface of the light guide plate. 
     (44) In each of the twenty-fifth to the twenty-ninth embodiments, the LEDs include the blue LED components. However, LEDs including violet LED components configured to emit violet light rays that are visible light rays or ultraviolet LED components (near-ultraviolet LED components) configured to emit ultraviolet rays (e.g., near-ultraviolet rays) may be used instead of the blue LED components. It is preferable that a wavelength converting sheet used with the LEDs including the violet LED components or the ultraviolet LED components contains red phosphors, green phosphors, and blue phosphors. The wavelength converting sheet used with the LEDs including the violet LED components or the ultraviolet LED components may contain one or two of the red phosphors, the green phosphors, and the blue phosphors and the sealing members of the LEDs may contain the phosphors that are not contained in the wavelength converting sheet. The colors of the phosphors may be altered as appropriate. 
     (45) In each of the twenty-fifth to the twenty-ninth embodiments, the LEDs include the blue LED components and the wavelength converting sheet includes the green phosphors and the red phosphors. However, the LEDs may include red LED components configured to emit red light rays instead of the blue LED components to emit magenta light rays. A wavelength converting sheet used with the LEDs may include green phosphors. Instead of the red LED components, the sealing member of the LEDs may contain red phosphors configured to emit red light rays when excited by blue light rays, which are exciting light rays. 
     (46) Other than the above (45), the LEDs may include green LED components configured to emit green light rays in addition to the blue LED component to emit cyan light rays. A wavelength converting sheet used with the LEDs may include red phosphors. Instead of the green LED components, the sealing member of the LEDs may contain green phosphors configured to emit green light rays when exited by the blue light rays, which are exciting light rays. 
     (47) The configuration of the twenty-sixth embodiment may be combined with any one of the configurations of the twenty-seventh to the twenty-ninth embodiments. The configuration of the twenty-seventh embodiment may be combined with the configuration of the twenty-ninth embodiment. The configuration of the twenty-eighth embodiment may be combined with the configuration of the twenty-ninth embodiment. 
     (48) In each of the twenty-fifth to the twenty-ninth embodiments, the wavelength converting sheet contains the green phosphors and the red phosphors. However a wavelength converting sheet containing only yellow phosphors or a wavelength converting sheet containing red phosphors and green phosphors in addition to the yellow phosphors may be used. 
     (49) In each of the twenty-fifth to the twenty-ninth embodiments, the quantum dot phosphors are used for the phosphors contained in the wavelength converting sheet are the core-shell type quantum dot phosphors including CdSe and ZnS. However, core type quantum dot phosphors each having a single internal composition may be used. For example, a material (CdSe, CdS, ZnS) prepared by combining Zn, Cd, Hg, or Pb that could be a divalent cation with O, S, Se, or Te that could be a dianion may be singly used. A material (indium phosphide (InP), gallium arsenide (GaAs)) prepared by combining Ga or In that could be a tervalent cation with P, As, or Sb that could be a tervalent anion or chalcopyrite type compounds (CuInSe2) may be singly used. Other than the core-shell type quantum dot phosphors and the core type quantum dot phosphors, alloy type quantum dot phosphors may be used. Furthermore, quantum dot phosphors that do not contain cadmium may be used. 
     (50) In each of the twenty-fifth to the twenty-ninth embodiments, the quantum dot phosphors used for the phosphors contained in the wavelength converting sheet are the core-shell type quantum dot phosphors including CdSe and ZnS. However, core-shell type quantum dot phosphors including a combination of other materials may be used. Furthermore, quantum dot phosphors that do not contain cadmium (Cd) may be used. 
     (51) In each of the twenty-fifth to the twenty-ninth embodiments, the quantum dot phosphors are contained in the wavelength converting sheet. Other types of phosphors may be contained in the wavelength converting sheet. For example, sulfide phosphors may be used for the phosphors contained in the wavelength converting sheet. Specifically, SrGa 2 S 4 :Eu 2+  may be used for the green phosphors and (Ca, Sr, Ba)S:Eu 2+  may be used for the red phosphors. 
     (52) Other than the above (51), (Ca, Sr, Ba) 3 SiO 4 :Eu 2+ , β-SiAlON:Eu 2+ , or Ca 3 Sc 2 Si 3 O 12 :Ce 3+  may be used for the green phosphors contained in the wavelength converting sheet. (Ca, Sr, Ba) 2 SiO 5 N 8 :Eu 2+ , CaAlSiN 3 :Eu 2+ , or a complex fluoride fluorescent material (e.g., manganese-activated potassium fluorosilicate (K 2 TiF 6 )) may be used for the red phosphors contained in the wavelength converting sheet. (Y, Gd) 3 (Al, Ga) 5 O 12 :Ce 3+  (so-called YAG:Ce 3+ ), α-SiAlON:Eu 2+ , or (Ca, Sr, Br) 3 SiO 4 :Eu 2+  may be used for the yellow phosphors contained in the wavelength converting sheet. 
     (53) Other than the above (51) and (52), organic phosphors may be used for the phosphors contained in the wavelength converting sheet. The organic phosphors may be low molecular organic phosphors including triazole or oxadiazole as a basic skeleton. 
     (54) Other than the above (51), (52), and (53), phosphors configured to convert wavelengths through energy transfer via dressed photons (near-field light) may be used for the phosphors contained in the wavelength converting sheet. Preferable phosphors of this kind may be phosphors including zinc oxide quantum dots (ZnO-QD) with diameters from 3 nm to 5 nm (preferably about 4 nm) and DCM pigments dispersed in the zinc oxide quantum dots. 
     (55) In each of the above embodiments, the emission spectrum of the LEDs (peak wavelengths, half width of each peak) and the emission spectrum of the phosphors contained in the phosphor layer (peak wavelengths, half width of each peak) may be altered as appropriate. 
     (56) In each of the above embodiments, InGaN is used for the material of the LED components in the LEDs. However, GaN, AlGaN, GaF, ZnSe, ZnO, or AlGaInP may be used for the material of the LED components. 
     (57) In each of the above embodiments, the liquid crystal panel and the chassis are in the upright position with the short-side directions corresponding with the vertical direction. However, the liquid crystal panel and the chassis may be in the upright portion with the long-side directions corresponding with the vertical direction. 
     (58) In each of the above embodiments, the TFTs are used for the switching components of the liquid crystal display device. However, the present invention can be applied to a liquid crystal display device including switching components other than the TFTs (e.g., thin film diodes (TFD)). Furthermore, the present invention can be applied to a black-and-white liquid crystal display other than the color liquid crystal display. 
     (59) In each of the above embodiments, the transmissive type liquid crystal display device is provided. However, the present invention can be applied to a reflective type liquid crystal display device or a semitransmissive type liquid crystal display device. 
     (60) In each of the above embodiments, the liquid crystal display device including the liquid crystal panel as a display panel is provided. However, the present invention can be applied to display devices including other types of display panels. 
     (61) In each of the above embodiments, the television device including the tuner is provided is provided. However, the present invention can be applied to a display device without a tuner. Specifically, the present invention can be applied to a liquid crystal display panel used in an digital signage or an electronic blackboard. 
     EXPLANATION OF SYMBOLS 
     
         
         
           
               10 : Liquid crystal display device (display device) 
               12 : Lighting unit (backlight unit) 
               13 : Bezel 
               14 : Chassis 
               15 : Optical member 
               150 : Phosphor sheet (wavelength converting member) 
               16 : Frame 
               17 : LED (light source) 
               18 : LED board 
               19 : Light guide plate 
               19   a : Light exiting surface 
               19   b : Back surface (opposite surface) 
               19   c : Light entering surface 
               19   d : Opposite-side light source non-opposed surface 
               20 : Reflection sheet 
               21 : Elastic member 
               22 ,  122 ,  222 ,  23 ,  123 ,  223 : complementary color member 
               50 : Phosphor tube (wavelength converting member) 
               60 : Holder 
             S 1 : Space 
               419   a : Light exiting plate surface 
               419   b : Light entering end surface 
               419   d : Non-light-entering end surface 
               419   d   1 : Non-light-entering opposite end surface 
               419   d   2 : Non-light-entering lateral end surface 
               420 : Plate surface wavelength converting sheet (plate surface wavelength converting member) 
               425 : Plate surface reflection sheet (plate surface reflection member) 
               427 : End surface wavelength converting sheet (end surface wavelength converting member) 
               428 : End surface reflection sheet (end surface reflection member) 
               431 : End surface wavelength converting member 
               522 : Light reflecting and scattering pattern 
               523 : First complementary color member 
               524 : Second complementary color member 
               629 : Center portion 
               630 : Peripheral portion 
               631 : Retroreflector 
               633 : Light scattering particle 
               634 : Positioning portion 
               635 : First mating positioning portion 
               636 : First mating positioning portion