Patent Document

CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is the national phase under 35 U.S.C. §371 of PCT International Application No. PCT/JP2013/079394 which has an International filing date of Oct. 30, 2013 and designated the United States of America. 
     
    
     BACKGROUND 
       [0002]    1. Technical Field 
         [0003]    The present invention relates to a display apparatus having an edge light type backlight. 
         [0004]    2. Description of Related Art 
         [0005]    A liquid crystal display apparatus has characteristics such as thin, and low power consumption, recently, due to an improvement of display quality thereof, has been widely distributed as a display alternative to a conventional CRT, and is widely used as an image display apparatus of a television receiving apparatus (hereinafter, referred to as a TV receiving apparatus). Unlike a self-luminous device, the liquid crystal display apparatus needs a backlight as a light source, and displays an image by controlling light transmittance which is determined by electro-optical characteristics of liquid crystals. 
         [0006]    The backlight has types of an edge light type (side light type, or light guide plate type), and a direct type. 
         [0007]    As a liquid crystal display apparatus having the edge light type backlight, in order to achieve thinning, weight lightening, and narrowing of a frame, there may be a display apparatus in which a backlight unit formed by housing a light guide plate, optical sheets, and a light emitting diode (LED) substrate in a rectangular box-shaped chassis is disposed at a back surface of a liquid crystal display panel (hereinafter, referred to as a display panel) to form a display module, and the display module is covered with a frame. The LED substrate includes a plurality of LEDs mounted on a flat surface of an elongated substrate. When the backlight unit is an edge light type from one side, the LED substrate is disposed to face, for example, one long side surface of a rectangular plate-shaped light guide plate. Light which is emitted from the LEDs and has entered from the long side surface of the light guide plate is emitted from a main surface of the light guide plate, and the back surface of the liquid crystal panel is irradiated with the light. 
         [0008]    There are cases that the LED substrate is mounted on a side plate facing the long side surface of the light guide plate of the chassis; and the LED substrate is mounted on a short side portion of an LED holding plate formed in an L shape in a side view, while the chassis does not have the side plate. In the latter case, the long side portion of the LED holding plate is connected to the chassis. 
         [0009]    The display panel is configured so as to be held by a holding member formed in a rectangular plate shape, and the holding member covers the LED substrate, as well as the LED holding plate. 
         [0010]    In addition, a peripheral edge part of the display panel and the holding member are covered with a bezel formed in a rectangular plate shape. 
         [0011]    In order to fix the holding member and the bezel to a portion which holds the LED substrate of the backlight unit such as the LED holding plate, screws are used. 
         [0012]    There are restrictions on a design of the above-described thinning and narrowing of a frame, and recently, to realize high resolution and high definition such as 4K2K, a source substrate, or the like which is disposed on an outer surface of the holding member is increased in a size (increased in an area). Thereby, there is a problem that, when the LED substrate is disposed on an inner surface inside of the outer surface of the holding member, it is not possible to sufficiently secure a space for fixing the screws. 
         [0013]    As a liquid crystal display apparatus which has achieved narrowing of the frame, there is an invention disclosed in Japanese Patent Laid-Open Publication No. 2001-356321. 
         [0014]      FIG. 13  is a partial cross-sectional view illustrating a liquid crystal display apparatus of Japanese Patent Laid-Open Publication No. 2001-356321. 
         [0015]    The liquid crystal display apparatus includes a display panel  21 , a holding member  26 , a bezel  27 , and a mounting member  39 . The holding member  26  has a side part, and holds the display panel  21 . The bezel  27  has a front plate  272  which covers a peripheral edge part of the display panel  21 , and a side plate  271  which extends substantially parallel to the side part of the holding member  26 , and has a screw insertion hole  275 . The mounting member  39  is formed in substantially a U shape, is detachably mounted on the side part of the holding member  26 , and has a female screw  391  to which a screw  40  inserted into the screw insertion hole  275  of the bezel  27  is screwed. 
         [0016]    The display apparatus includes the mounting member  39  as described above, and a frame region is reduced by as much as an amount disposing the mounting member  39 , such that there are problems of not being able to narrow the frame, as well as an increase in manufacturing costs. 
         [0017]    In addition, the mounting member  39  formed in substantially a U shape is configured to be screwed to the side part of the holding member  26 , and it is conceivable that, when fastening the screw  40  to the female screw  391 , a positional shift may occur therebetween, and fixation of the mounting member  39  to the holding member  26  may be weakened. 
         [0018]    Further, the mounting structure has a problem that it is not possible to cope with a demand for disposing a plurality of source substrates while decreasing an interval between the outer surface of the holding member  26 . 
         [0019]      FIG. 14  is a partial cross-sectional view illustrating another conventional display module. 
         [0020]    The display module includes a display panel  21 , an optical sheet group  22  including, for example, three optical sheets, a light guide plate  23 , a holding plate  24 , a holding member  26 , a bezel  27 , an LED substrate  30 , a reflection sheet  38 , and a mounting member  41 . 
         [0021]    The LED substrate  30  including a plurality of LEDs  31  mounted thereon is supported by the holding plate  24 , with being disposed to face a long side surface of the light guide plate  23 . 
         [0022]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241  which covers a lower long side surface of the light guide plate  23 , and a back plate part  242  which is provided perpendicular to the lower plate part  241  and extends in a longitudinal direction of the light guide plate  23 . 
         [0023]    The reflection sheet  38  is a white sheet, and is made of, for example, a resin material having an optical reflectivity such as polyethylene terephthalate (PET), polycarbonate (PC) or the like. The reflection sheet  38  is provided at the back plate part  242  through a spacer  29 . The reflection sheet  38  is provided on the outer surface of the light guide plate  23 . 
         [0024]    The optical sheet group  22  is a sheet group including a diffusion sheet, lens sheet, reflection type polarizing sheet, and the like, and is disposed at a front of the main surface of the light guide plate  23 . 
         [0025]    The holding member  26  has a lower plate part  261 , a panel abutting part  262 , and a sheet abutting part  263 . 
         [0026]    The lower plate part  261  extends in a horizontal direction, and abuts the lower plate part  241  of the holding plate  24  to support the lower plate part  241 . The lower plate part  261  has four source substrates (not illustrated) disposed beside a lower surface thereof. A screw insertion hole  268  is provided in a gap portion of the lower plate part  241 , in which an adjacent source substrate is disposed. 
         [0027]    The panel abutting part  262  is erected on the lower plate part  261 , and abuts against a lower end edge part of a back surface of the display panel  21  through a buffer member  33 . 
         [0028]    The sheet abutting part  263  extends from an upper side of the panel abutting part  262 , and a back surface of the sheet abutting part  263  abuts on a lower portion of a front surface of the optical sheet group  22  through a buffer member  34 . 
         [0029]    The bezel  27  is a frame body formed in an L shape in the side view, and has a side plate  271 , and a front plate  272 . The side plate  271  extends in the horizontal direction, and covers the source substrate and the lower plate part  261  of the holding member  26 . The front plate  272  is provided perpendicular to the side plate  271 , and the back surface thereof abuts a lower end edge part of the front surface of the display panel  21  through a buffer member  28 . The front plate  272  is provided with a plurality of screw insertion holes  278  in the lower portion thereof. 
         [0030]    The mounting member  41  is provided with a plurality of female screws  411  in the lower portion thereof. The mounting member  41  is mounted on the back surface of the back plate part  242  of the holding plate  24 . 
         [0031]    In addition, the bezel  27  and the holding member  26  are configured so as to be mounted to the holding plate  24 , by inserting a screw  42  into the screw insertion holes  278  and  268  to be screwed to the female screws  411 . 
         [0032]    The display module has problems that, since the mounting member  41  is provided, a thickness of the display module is thickened and the manufacturing costs are increased, as well as, since the screw insertion structure is provided in the gap between the lower plate part  261  of the holding member  26 , in which the source substrate is disposed, it is not possible to cope with a demand for decreasing the gap. 
         [0033]    As a fixing structure of another bezel  27  and the holding member  26  to the holding plate  24 , there is a structure in which a stud is caulked to the lower plate part  241  of the holding plate  24 , a female screw is formed in the stud, a screw penetrates the side plate  271  from an outside of the side plate  271  of the bezel  27 , and in this state, the screw is screwed to the female screw. 
         [0034]    In this case, there are problems that, since the stud is provided in the lower plate part  241 , manufacturing processes become complicated, and since the screw insertion structure is provided in the gap between the lower plate part  261 , in which the source substrate is disposed, it is not possible to cope with a demand for decreasing the gap. 
         [0035]    Further, as a fixing structure of the bezel  27  and the holding member  26  to the backlight unit, a structure, in which a female screw is provided in a gap between LEDs  31  of the LED substrate  30 , a screw penetrates the side plate  271  from the outside of the side plate  271  of the bezel  27 , and in this state, the screw is screwed to the female screw, may be conceived. 
         [0036]    In this case, there are problems that, engagement of the screw to the female screw is decreased, and the screw abuts on the LED substrate  30 , such that the LED substrate  30  may be damaged. 
       SUMMARY 
       [0037]    In consideration of the above-mentioned problems, it is an object of the present invention to provide a display apparatus which is capable of reliably mounting at least one of a holding member and a bezel to a holding plate with no damage to a light emitting element mounting substrate by a simple structure without adding a separate part for mounting, and coping with an increase in an area of a driving circuit board disposed to the holding member. 
         [0038]    A display apparatus according to one embodiment of the present invention comprises: a light guide plate; a holding plate which holds a substrate having a plurality of light emitting elements, and is disposed to face a side surface of the light guide plate; a display panel disposed to face a main surface of the light guide plate; a holding member which holds the display panel and covers the holding plate; and a bezel which covers a peripheral edge part of the display panel and the holding member, wherein the holding plate is provided with a mounting part which extends and protrudes in a direction which is away from the display panel, and at least one of the holding member and the bezel is mounted to the mounting part by a fastener. 
         [0039]    According to the embodiment, without newly providing a member for mounting, by changing a shape of the holding plate, a mounting structure of at least one of the holding member and the bezel to the holding plate is obtained, and when the fastener is, for example, a screw, it is possible to minimize a positional shift between a female screw and a screw insertion hole, and maintain a strength of fixation. 
         [0040]    In addition, the mounting part is located at a rearward region from a position in which a substrate having light emitting elements is disposed, and is apart from a portion in which the substrate having the light emitting elements is disposed to have a complicated mounting structure, and thereby, it is possible to easily and reliably fix at least one of the holding member and the bezel to the holding plate, and narrow the frame. 
         [0041]    Further, when disposing the driving circuit board such as a source substrate to the holding member, it is possible to cope with an increase in an area of the driving circuit board. 
         [0042]    The display apparatus according to one embodiment of the present invention may comprise a covering plate which covers a flat surface of the light guide plate, and is provided perpendicular to the holding plate. 
         [0043]    According to the embodiment, it is possible to stably dissipate heat generated by the light emitting elements. 
         [0044]    In the display apparatus according to one embodiment of the present invention, the holding member may be provided, on the outside of the portion with which the holding plate is covered, with a plurality of driving circuit boards to drive the display panel, and a portion between the driving circuit boards of the holding member may be mounted to the mounting part by the fastener. 
         [0045]    According to the embodiment, the mounting position by the fastener is located between the driving circuit boards, and is located at a forward region, rather than a rearward region from an end portion of the back side of the driving circuit board, such that it is possible to narrow a thickness of the display apparatus. In addition, a width (vertical width) of the driving circuit board is not restricted by the mounting structure, such that it is possible to increase the width thereof, and cope with an increase in the size of the driving circuit board. 
         [0046]    In the display apparatus according to one embodiment of the present invention, the holding member may be provided, on the outside of the portion with which the holding plate is covered, with a plurality of driving circuit boards to drive the display panel, the driving circuit board has a concave on the distal part from the display panel in a portion facing the adjacent driving circuit board, and the portion of the holding member corresponding to the concave may be mounted to the mounting part by the fastener. 
         [0047]    According to the embodiment, the driving circuit board has the concave part on the distal region in the portion facing the adjacent driving circuit board, and the mounting structure is disposed in the concave part. Accordingly, the front portions of the concave parts of the driving circuit boards may be disposed closely each other, and the area of the driving circuit boards may be increased. 
         [0048]    In the display apparatus according to one embodiment of the present invention, the holding member may be provided, on the outside of the portion with which the holding plate is covered, with a plurality of driving circuit boards to drive the display panel, and an end portion in the longitudinal direction of the holding member in which the driving circuit board is not provided may be mounted to the mounting part by the fastener. 
         [0049]    According to the embodiment, the driving circuit board may be fixed to the holding member, without being restricted to the mounting structure. 
         [0050]    In the display apparatus according to one embodiment of the present invention, the holding member may be provided, on the outside of the portion with which the holding plate is covered, with a plurality of driving circuit boards to drive the display panel, and with respect to the portion in which the driving circuit board of the holding member is provided, the distal portion from the display panel may be mounted to the mounting part by the fastener. 
         [0051]    According to the embodiment, the driving circuit board may be fixed to the holding member, without being restricted to the mounting structure. 
         [0052]    In the display apparatus according to one embodiment of the present invention, the mounting part may be provided with an abutting part which protrudes in a direction close to the bezel to abut on a rear surface of the bezel. 
         [0053]    According to the embodiment, the abutting part abuts on a rear surface of the bezel, such that, when mounting the bezel to the holding plate by the fastener, the front portion of the bezel being opened outwardly is prevented. 
         [0054]    In the display apparatus according to one embodiment of the present invention, the mounting part may be provided with fins to dissipate heat. 
         [0055]    According to the embodiment, it is possible to stably dissipate heat from the light emitting elements. 
         [0056]    According to the present invention, since the holding plate is provided with the mounting part which extends and protrudes to the rearward region, and at least one of the holding member and the bezel is configured so as to be mounted to the mounting part by the fastener, it is possible to reliably mount at least one of the holding member and the bezel to the holding plate with no damage to the light emitting element mounting substrate by a simple structure, without newly providing a mounting part. In addition, it is possible to cope with an increase in the area of the driving circuit board disposed to the holding member. 
         [0057]    The above and further objects and features will more fully be apparent from the following detailed description with accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0058]      FIG. 1  is a front perspective view illustrating an appearance of a TV receiving apparatus according to Embodiment 1 of the present invention. 
           [0059]      FIG. 2  is a rear view illustrating a display module according to Embodiment 1 of the present invention. 
           [0060]      FIG. 3  is a cross-sectional view taken on line III-III of  FIG. 2 . 
           [0061]      FIG. 4  is a partial sectional view in the longitudinal direction illustrating the display module according to Embodiment 1 of the present invention. 
           [0062]      FIG. 5  is a partial sectional view in the longitudinal direction illustrating a display module according to Embodiment 2 of the present invention. 
           [0063]      FIG. 6  is a partial perspective view illustrating a holding member of a display module according to Embodiment 3 of the present invention. 
           [0064]      FIG. 7  is a partial sectional view in the longitudinal direction illustrating the display module according to Embodiment 3 of the present invention. 
           [0065]      FIG. 8  is a partial perspective view illustrating a holding member according to Embodiment 4 of the present invention. 
           [0066]      FIG. 9  is a partial perspective view illustrating a holding member according to Embodiment 5 of the present invention. 
           [0067]      FIG. 10  is a partial sectional view in the longitudinal direction illustrating a display module according to Embodiment 6 of the present invention. 
           [0068]      FIG. 11  is a partial cross-sectional view illustrating a display module according to Embodiment 7 of the present invention. 
           [0069]      FIG. 12  is a partial sectional view in the longitudinal direction illustrating a display module according to Embodiment 8 of the present invention. 
           [0070]      FIG. 13  is a partial cross-sectional view illustrating a liquid crystal display apparatus of Japanese Patent Laid-Open Publication No. 2001-356321. 
           [0071]      FIG. 14  is a partial sectional view in the longitudinal direction illustrating another conventional display module. 
       
    
    
     DETAILED DESCRIPTION 
     Embodiment 1 
       [0072]      FIG. 1  is a front perspective view illustrating an appearance of a TV receiving apparatus  1  according to Embodiment 1 of the present invention,  FIG. 2  is a rear view illustrating a display module  2 ,  FIG. 3  is a cross-sectional view taken on line III-III of  FIG. 2 , and  FIG. 4  is a partial sectional view in the longitudinal direction illustrating the display module  2 . 
         [0073]    The TV receiving apparatus  1  includes the laterally long display module  2  which has a display panel  21  for displaying an image thereon, a tuner  5  which receives a broadcast wave from an antenna (not illustrated), and a decoder  6  which decodes the encoded broadcast wave. In the TV receiving apparatus  1 , the decoder  6  decodes the broadcast wave received by the tuner  5 , and the display module  2  displays an image based on decoded information. The TV receiving apparatus  1  is provided with a stand  7  for supporting the TV receiving apparatus  1  at a lower side thereof. 
         [0074]    The display module  2  is housed in a vertical position between a front cabinet  3  and a rear cabinet  4  which are disposed in back and front in the vertical position. The front cabinet  3  is a rectangular frame body which covers a peripheral edge part of the display module  2 , and has a rectangular opening  3   a  in the center thereof. The front cabinet  3  is made of, for example, a synthetic resin. The rear cabinet  4  is formed in a shape of a rectangular tray of which the front being opened, and is made of, for example, a synthetic resin. Further, the front cabinet  3  and the rear cabinet  4  may be made of other material as well. 
         [0075]    Vertical and lateral dimensions of the front cabinet  3  and the rear cabinet  4  are substantially the same as each other, and peripheral edge portions thereof face each other. The vertical and lateral dimensions of the display panel  21  are slightly larger than those of the opening  3   a  of the front cabinet  3 , and the peripheral edge portions of the display panel  21  face inner edge portions of the front cabinet  3 . 
         [0076]    As illustrated in  FIGS. 3 and 4 , the display module  2  includes the display panel  21 , an optical sheet group  22  including three optical sheets, for example, a light guide plate  23 , a holding plate  24 , a chassis  25 , a holding member  26 , a bezel  27 , an LED substrate  30 , a source substrate  35 , and a reflection sheet  38 . 
         [0077]    A backlight unit is formed by the optical sheet group  22 , the light guide plate  23 , the holding plate  24 , the chassis  25 , the LED substrate  30 , and the reflection sheet  38 . 
         [0078]    The display panel  21  includes a color filter substrate having a plurality of color filters, an active matrix substrate (a thin film transistor (hereinafter, referred to as a TFT) substrate) which is disposed to face the color filter substrate and has a plurality of TFTs which are active elements, and a liquid crystal layer provided between the color filter substrate and the active matrix substrate as a display medium layer. 
         [0079]    The light guide plate  23  is formed in a rectangular plate shape (rectangular parallelepiped shape), and has a main surface facing the display panel  21 , a rear surface which is an opposite surface of the main surface and faces the chassis  25 , a pair of long side surfaces, and a pair of short side surfaces. In addition, a lower long side surface functions as a light incident surface for guiding light into the light guide plate  23 , and the light guided from the long side surface into the light guide plate  23  is emitted toward the display panel  21  from the main surface (a light emitting surface) of the light guide plate  23 . 
         [0080]    The chassis  25  is made of, for example, iron, and is formed in a shape of a tray being opened towards the display panel  21 . 
         [0081]    As illustrated in  FIGS. 2 and 3 , a lower portion of the chassis  25  is connected with the holding plate  24  by using a plurality of screws  37 . 
         [0082]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241  which covers the lower long side surface of the light guide plate  23 , a back plate part  242  which is provided perpendicular to the lower plate part  241  and extends in a longitudinal direction of the light guide plate  23 , and a mounting part  243  which protrudes rearward from an end portion of the back side of the lower plate part  241 . The mounting part  243  extends along a lower peripheral edge part of the lower plate part  241 . The holding plate  24  is formed in a reverse T shape. The mounting part  243  is provided with a plurality of female screws  244 . 
         [0083]    The holding plate  24  is made of aluminum, and functions as a heat spreader to dissipate heat generated from LEDs  31 . 
         [0084]    Further, the mounting part  243  is not limited to the case of a continuous plate shape, and a plurality of mounting parts may be discontinuously provided depending on fastening positions of screws  32 . 
         [0085]    A main substrate holding member  251  is mounted at a lateral central part of a connection portion between the chassis  25  and the holding plate  24 . The main substrate holding member  251  is provided with the tuner  5 , a CPU and the like. 
         [0086]    The optical sheet group  22 , the light guide plate  23 , and the LED substrate  30  are housed in the chassis  25  and the holding plate  24 . Further, a light source of the backlight unit is not limited to the LED. 
         [0087]    The reflection sheet  38  is a white sheet, and is made of, for example, a resin material having an optical reflectivity such as PET, PC or the like. The reflection sheet  38  is provided at the back plate part  242  of the holding plate  24  and a bottom of the chassis  25  through a plurality of spacers  29 . 
         [0088]    The reflection sheet  38  is provided on the outer surface of the light guide plate  23 . 
         [0089]    The optical sheet group  22  is a sheet group including a diffusion sheet, lens sheet, reflection type polarizing sheet, and the like, and is disposed at a front of the main surface of the light guide plate  23 . In addition, the light emitted from the main surface of the light guide plate  23  is diffused, collected, or the like by the optical sheet group  22 . 
         [0090]    The LED substrate  30  includes a plurality of LEDs  31  mounted on the flat surface of the substrate made of, for example, aluminum to emit the light guided into the light guide plate  23 , and as described above, is disposed beside a long side surface of the lower side of the light guide plate  23 . The LED substrate  30  extends along the long side surface, and each LED  31  faces the long side surface of the light guide plate  23 . 
         [0091]    The LED substrate  30  is held on an upper surface of the lower plate part  241  of the holding plate  24 . 
         [0092]    The holding member  26  is a frame body made of, for example, a synthetic resin and formed in an L shape in a side view, and has a lower plate part  261 , a panel abutting part  262 , a sheet abutting part  263 , and a bezel abutting part  264 . 
         [0093]    The lower plate part  261  extends in a horizontal direction, and abuts on the lower plate part  241  of the holding plate  24  to support the lower plate part  241 . The lower plate part  261  has, for example, four source substrates  35  disposed beside a lower surface thereof. The source substrate  35  is connected to the active matrix substrate of the display panel  21  by a flexible wiring plate  36 . 
         [0094]    The panel abutting part  262  has an erected part which is erected on the lower plate part  261 , and an abutting part which extends from an upper side of the erected part and is formed in a lateral U shape in the side view. In a state in which the buffer member  33  is applied to a U-shaped opening portion of the abutting part, the abutting part abuts the lower end edge part of the back surface of the display panel  21  to support the display panel  21 . In addition, a back surface of the abutting part abuts on the lower end edge part of a front surface of the light guide plate  23  through a buffer member  34 . Further, an upper surface of the abutting part abuts a lower surface of the optical sheet group  22  to support the optical sheet group  22 . 
         [0095]    The sheet abutting part  263  extends from an upper side of the panel abutting part  262 , and abuts on a lower portion of a back surface of the optical sheet group  22 . 
         [0096]    The bezel abutting part  264  is vertically provided at an end portion of the back side of the lower plate part  261 , and is configured so as to abut on a screw head locking  273  of the bezel  27  to be described below. 
         [0097]    The bezel  27  is a frame body made of, for example, iron and formed in an L shape in the side view, and has a side plate  271 , a front plate  272 , and the screw head locking  273 . The side plate  271  extends in the horizontal direction, and covers the source substrate  35 , and the lower plate part  261  of the holding member  26 . The front plate  272  is provided perpendicular to the side plate  271 , and the back surface thereof abuts on the lower end edge part of the front surface of the display panel  21  through a buffer member  28 . That is, the display panel  21  is sandwiched between the bezel  27  and the holding member  26  through the buffer members  28  and  33 . 
         [0098]    The side plate  271  is provided with the screw head locking  273  at an end portion of the back side thereof, which extends rearward with being recessed inwardly. The screw head locking  273  is provided with a screw insertion hole  274 . 
         [0099]    In the present embodiment, in a state in which a peripheral edge part of a head portion of a screw  32  is locked to the screw head locking  273 , and a leg portion thereof is inserted into the screw insertion hole  274 , the screw is screwed to a female screw  244  of the holding plate  24 . 
         [0100]    Thereby, both of the holding member  26  and the bezel  27  are fixed to the holding plate  24 . That is, without newly providing a member, by changing a shape of the holding plate  24 , a mounting structure of the holding member  26  and the bezel  27  to the holding plate  24  is obtained, as well as, it is possible to minimize a positional shift between the female screw  244  and the screw insertion hole  274 , and maintain a strength of fixation. 
         [0101]    A fastening position of the screw  32  is located at the rearward region from the source substrate  35 , and is apart from a portion in which the LED substrate  30  is disposed to have a complicated mounting structure, such that it is possible to easily and reliably fix the holding member  26  and the bezel  27  to the holding plate  24 , without being restricted to an arrangement of the source substrate  35 . Further, it is possible to narrow the frame. Furthermore, by decreasing a gap between the source substrates  35 , it is possible to cope with an increase in a size of the source substrate  35 , and realize high resolution, etc. 
       Embodiment 2 
       [0102]    A display module  12  according to Embodiment 2 of the present invention has the same configuration as the display module  2  according to Embodiment 1, except that the shape of a holding plate  24  is different therefrom. 
         [0103]      FIG. 5  is a partial sectional view in the longitudinal direction illustrating the display module  12  according to Embodiment 2. In the drawing, the same parts as  FIG. 4  will be denoted by the same reference numerals, and will not be described. 
         [0104]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241  which covers the lower long side surface of the light guide plate  23 , a back plate part  242  which is provided perpendicular to the lower plate part  241  and extends in the longitudinal direction of the light guide plate  23 , a mounting part  243  which protrudes rearward from an end portion of the back side of the lower plate part  241 , and a bezel abutting part  245  which is provided perpendicular to the lower surface of the mounting part  243  and abuts on an upper surface of the screw head locking  273  of the bezel  27 . 
         [0105]    In the present embodiment, the bezel abutting part  245  abuts a rear surface of the screw head locking  273 , such that, when fastening the screw  32  to the female screw  244  of the holding plate  24 , the front plate  272  of the bezel  27  being opened outwardly is prevented. 
       Embodiment 3 
       [0106]    A display module  13  according to Embodiment 3 of the present invention has the same configuration as the display module  2  according to Embodiment 1, except that the fastening position of the screw  32  is different therefrom. 
         [0107]      FIG. 6  is a partial perspective view illustrating a holding member  26  of the display module  13 , and  FIG. 7  is a partial sectional view in the longitudinal direction illustrating the display module  13 . In the drawings, the same parts as  FIG. 4  will be denoted by the same reference numerals, and will not be described. 
         [0108]    A bezel abutting part  264  of the holding member  26  of the display module  13  includes a rectangular parallelepiped-shaped portion and a reverse U shaped-portion. The bezel  27  abuts on the bezel abutting part  264 , then the screw  32  is inserted into the screw insertion hole  274  and the bezel abutting part  264 , and is screwed to the female screw  244  of the mounting part  243 , such that the bezel  27  and the holding member  26  are fixed to the holding plate  24 . 
         [0109]    As illustrated in  FIG. 6 , the source substrates  35  and  35  are disposed to the holding member  26 , so that the source substrates  35  and  35  sandwich the bezel abutting part  264 . That is, the fastening position of the screw  32  is located between the source substrates  35  and  35 , and is located at a forward region, rather than a rearward region from an end portion of the back side of the source substrate  35  as Embodiment 1. Accordingly, a thickness of the display module  13  may be reduced. In addition, when the display module has the same thickness as the display module  2  according to Embodiment 1, it is possible to increase the width of the source substrate  35 , and cope with an increase in the size of the source substrate  35 . 
       Embodiment 4 
       [0110]    A display module according to Embodiment 4 of the present invention has the same configuration as the display module  13  according to Embodiment 3, except that the shape of a source substrate  35  is different therefrom. 
         [0111]      FIG. 8  is a partial perspective view illustrating a holding member  26  according to Embodiment 4. In the drawings, the same parts as  FIG. 6  will be denoted by the same reference numerals, and will not be described. Furthermore, the display module has the same configuration of cross-section as the configuration of  FIG. 7 . 
         [0112]    The source substrate  35  of the present embodiment has a notch  351  on a rearward region in a portion facing the adjacent source substrate  35 . As illustrated in  FIG. 8 , the upper sides (front sides) of the notches  351  may be disposed closely each other, thereby it is possible to increase the area of the source substrate  35 , and realize high resolution, etc. 
       Embodiment 5 
       [0113]    A display module according to Embodiment 5 of the present invention has the same configuration as the display module  13  according to Embodiment 3, except that the fastening position of the screw  32  is different therefrom. 
         [0114]      FIG. 9  is a partial perspective view illustrating a holding member  26  according to Embodiment 5. In the drawing, the same parts as  FIG. 6  will be denoted by the same reference numerals, and will not be described. Furthermore, the display module has the same configuration of cross-section as the configuration of  FIG. 7 . 
         [0115]    In the present embodiment, a bezel abutting part  264  is provided at a portion of both end portions in the lateral direction of the lower plate part  261 , in which the source substrate  35  is not disposed. The bezel  27  abuts on the bezel abutting part  264 , then the screw  32  is inserted into the screw insertion hole  274  and the bezel abutting part  264 , and is screwed to the female screw  244  of the mounting part  243 . That is, the fastening position of the screw  32  is located close to the end portion from the arrangement position of the source substrate  35 , and the bezel  27  and the holding member  26  may be fixed to the holding plate  24 , without being restricted to the arrangement of the source substrate  35 . 
       Embodiment 6 
       [0116]    A display module  14  according to Embodiment 6 of the present invention has the same configuration as the display module  2  according to Embodiment 1, except that the shape of a holding plate  24  is different therefrom. 
         [0117]      FIG. 10  is a partial sectional view in the longitudinal direction illustrating the display module  14  according to Embodiment 6. In the drawing, the same parts as  FIG. 4  will be denoted by the same reference numerals, and will not be described. 
         [0118]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241  which covers the lower long side surface of the light guide plate  23 , a back plate part  242  which is provided perpendicular to the lower plate part  241  and extends in the longitudinal direction of the light guide plate  23 , and a mounting part  243  which protrudes rearward from an end portion of the back side of the lower plate part  241 . The mounting part  243  extends along the lower end edge portion of the lower plate part  241 . The mounting part  243  is provided with a plurality of female screws  244  (not illustrated), and a plurality of fins  246  are arranged in a back-front direction at portions in which the female screws  244  are not provided. 
         [0119]    In the present embodiment, heat form the LEDs  31  are efficiently dissipated by the fins  246 . 
       Embodiment 7 
       [0120]    A display module  15  according to Embodiment 7 of the present invention has the same configuration as the display module  2  according to Embodiment 1, except that the shape of a holding member  26  is different therefrom. 
         [0121]      FIG. 11  is a partial cross-sectional view illustrating the display module  15  according to Embodiment 7. In the drawing, the same parts as  FIG. 4  will be denoted by the same reference numerals, and will not be described. 
         [0122]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241  which covers the lower long side surface of the light guide plate  23 , a back plate part  242  which is provided perpendicular to the lower plate part  241  and extends in the longitudinal direction of the light guide plate  23 , and a mounting part  243  which protrudes rearward from an end portion of the back side of the lower plate part  241 . The mounting part  243  is provided with a plurality of female screws  244 . 
         [0123]    The holding member  26  is a frame body formed in an L shape in the side view, and has a lower plate part  261 , a panel abutting part  262 , and a sheet abutting part  263 . Unlike the holding member  26  according to Embodiment 1, the holding member does not have the bezel abutting part  264 . 
         [0124]    The lower plate part  261  abuts on the lower plate part  241  of the holding plate  24  to support the lower plate part  241 . A source substrate (not illustrated) is disposed to a lower surface of the lower plate part  261 . 
         [0125]    The panel abutting part  262  has an erected part which is erected on the lower plate part  261 , and an abutting part which extends from an upper side of the erected part and is formed in a lateral U shape in the side view. In a state in which the buffer member  33  is applied to a U-shaped opening portion of the abutting part, the abutting part abuts on the lower end edge part of the back surface of the display panel  21  to support the display panel  21 . In addition, an upper surface of the abutting part abuts on the lower surface of the optical sheet group  22  to support the optical sheet group  22 . 
         [0126]    The sheet abutting part  263  extends from an upper side of the panel abutting part  262 , and abuts on the lower portion of the back surface of the optical sheet group  22 . 
         [0127]    The bezel  27  is a frame body formed in an L shape in the side view, and has a side plate  271 , a front plate  272 , and a screw head locking  273 . The side plate  271  extends in the horizontal direction, and covers the source substrate and the lower plate part  261  of the holding member  26 . The front plate  272  is provided perpendicular to the side plate  271 , and the back surface thereof abuts on the lower end edge part of the front surface of display panel  21  through the buffer member  28 . 
         [0128]    The side plate  271  is provided with the screw head locking  273  at an end portion of the back side thereof, which extends rearward with being recessed inwardly. The screw head locking  273  is provided with a screw insertion hole  274 . 
         [0129]    In the present embodiment, the bezel  27  is mounted to the holding plate  24 , by inserting the screw  32  into the screw insertion hole  274  to be screwed to the female screw  244  of the mounting part  243 . That is, without newly providing a member, by changing the shape of the holding plate  24 , the mounting structure of the bezel  27  to the holding plate  24  is obtained, as well as, it is possible to minimize the positional shift between the female screw  244  and the screw insertion hole  274 , and maintain a strength of fixation. 
         [0130]    The fastening position of the screw  32  is apart from the portion in which the LED substrate  30  is disposed to have a complicated mounting structure, such that it is possible to easily and reliably fix the bezel  27  to the holding plate  24 , without being restricted to the arrangement of the source substrate. Further, it is possible to narrow the frame, and cope with an increase in the size of the source substrate. 
       Embodiment 8 
       [0131]    A display module  16  according to Embodiment 8 of the present invention has the same configuration as the display module  2  according to Embodiment 1, except that the shape of a bezel  27  is different therefrom. 
         [0132]      FIG. 12  is a partial sectional view in the longitudinal direction illustrating the display module  16  according to Embodiment 8. In the drawing, the same parts as  FIG. 4  will be denoted by the same reference numerals, and will not be described. 
         [0133]    The holding plate  24  is made of, for example, aluminum, and includes a lower plate part  241 , a back plate part  242 , and a mounting part  243  which protrudes rearward from the end portion of the back side of the lower plate part  241 . The mounting part  243  is provided with a plurality of female screws  244 . 
         [0134]    The holding member  26  is a frame body formed in an L shape in the side view, and has a lower plate part  261 , a panel abutting part  262 , a sheet abutting part  263 , and a screw insertion hole  265 . Unlike the holding member  26  according to Embodiment 1, the holding member does not have the bezel abutting part  264 . 
         [0135]    The lower plate part  261  abuts on the lower plate part  241  of the holding plate  24  to support the lower plate part  241 . A plurality of source substrates (not illustrated) are disposed to the lower surface of the lower plate part  261 . The lower plate part  261  is provided with the plurality of screw insertion holes  265  in the end portion of the back side thereof. 
         [0136]    The panel abutting part  262  has an erected part which is erected on the lower plate part  261 , and an abutting part which extends from an upper side of the erected part and is formed in a lateral U shape in the side view. In a state in which the buffer member  33  is applied to a U-shaped opening portion of the abutting part, the abutting part abuts on the lower end edge part of the back surface of the display panel  21  to support the display panel  21 . In addition, an upper surface of the abutting part abuts on the lower surface of the optical sheet group  22  to support the optical sheet group  22 . 
         [0137]    The sheet abutting part  263  extends from an upper side of the panel abutting part  262 , and abuts the lower portion of the back surface of the optical sheet group  22 . 
         [0138]    The bezel  27  is a frame body formed in an L shape in the side view, and has a side plate  271 , and a front plate  272 . Unlike the display module  2  according to Embodiment 1, the bezel  27  does not have the screw head locking  273 . The side plate  271  extends in the horizontal direction, and covers the source substrate and the lower plate part  261  of the holding member  26 . The front plate  272  is provided perpendicular to the side plate  271 , and the back surface thereof abuts the lower end edge part of the front surface of display panel  21  through the buffer member  28 . 
         [0139]    In the present embodiment, the holding member  26  is mounted to the holding plate  24 , by inserting the screw  32  into the screw insertion hole  265  to be screwed to the female screw  244  of the mounting part  243 . That is, without newly providing a member, by changing the shape of the holding plate  24 , the mounting structure of the holding member  26  to the holding plate  24  is obtained, as well as, it is possible to minimize the positional shift between the female screw  244  and the screw insertion hole  265 , and maintain a strength of fixation. 
         [0140]    The fastening position of the screw  32  is apart from the portion in which the LED substrate  30  is disposed to have a complicated mounting structure, such that it is possible to easily and reliably fix the holding member  26  to the holding plate  24 , without being restricted to the arrangement of the source substrate. Further, it is possible to narrow the frame, and cope with an increase in the size of the source substrate. 
         [0141]    It should be understood that Embodiments 1 to 8 disclosed herein are illustrative and non-restrictive in every respect. Since the scope of the present invention is defined by the appended claims rather than by the description preceding them, and all changes that fall within metes and bounds of the claims, or equivalence of such metes and bounds thereof are therefore intended to be embraced by the claims. 
         [0142]    For example, in the above-described Embodiments 1 to 8, the case in which the display module  2  of the TV receiving apparatus  1  is an edge light type from one side has been described, but it is not limited thereto. The present invention may also be applied to an edge light type display module from both sides. 
         [0143]    In addition, the case in which the LED substrate  30  is disposed to face the long side surface side of the light guide plate  23  has been described, but it is not limited thereto. The present invention may be applied to a case in which the LED substrate  30  is disposed to face a short side surface of the light guide plate  23 , and may also be applied to a case in which a gate substrate is disposed to the outer surface of the holding member  26 . 
         [0144]    Further, the present invention is not limited to the case in which the LED substrate  30  is held by the holding plate  24 , and by using a chassis having a side plate on a lower side thereof, the LED substrate  30  may be held on the side plate. In this case, by including a mounting part which protrudes rearward from an end portion of the back side of the side plate, at least one of the bezel  27  and the holding member  26  may be mounted to the mounting part. 
         [0145]    Furthermore, in the above-described Embodiments 1 to 8, the case of using the screw  32  as a fastener has been described, but it is not limited thereto, and a pin or the like may be used. 
         [0146]    Furthermore, it is to be noted that, as used herein and in the appended claims, the singular forms “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise.

Technology Category: 3