Patent Publication Number: US-10782550-B2

Title: Liquid crystal display device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to and is a continuation of U.S. application Ser. No. 15/992,191 filed on May 30, 2018 which is claiming benefit of U.S. application Ser. No. 15/009,839 filed on Jan. 29, 2016. The contents of each of the above documents are incorporated herein by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present application relates to a liquid crystal display device. 
     2. Description of the Related Art 
     In Japanese Patent Application Laid-open No. 2009-48178, there is disclosed a liquid crystal display device in which a black matrix (non-light transmitting layer) configured to block light is formed in a non-display region surrounding a display region. It is known that electric charges are generated in the non-display region due to wiring coupling of a gate line. When an electric field formed between the electric charges and a pixel electrode is applied to a liquid crystal layer, the molecule alignment in the liquid crystal layer may be changed to cause unintended color display (color change). 
     SUMMARY OF THE INVENTION 
     Along with reduction in size and increase in density of the liquid crystal display device, the number of wirings arranged in the non-display region is increased. Therefore, it is desired to more effectively suppress the influence an a display image due to the electric charges generated by the wiring coupling. 
     The present application has been made in view of the above-mentioned problem, and has an object to provide a liquid crystal display device capable of reducing the influence on the display image due to the electric charges generated by the wiring coupling. 
     In order to solve the above-mentioned problem, according to one embodiment of the present application, there is provided a liquid crystal display device, including: a display panel including a plurality of gate lines extending in a row direction, and a plurality of data lines extending in a column direction; a gate driver configured to supply a gate signal to the plurality of gate lines; and a source driver configured to supply a source signal to the plurality of source lines, the display panel including a display region in which an image is to be displayed, and a non-display region formed into a frame shape surrounding the display region, the non-display region including a first region in which the gate driver is arranged, and a second region in which the source driver is arranged, the non-display region having a non-light transmitting layer formed therein, which is configured to restrict transmission of light, the non-light transmitting layer having a first slit formed therein, which extends through the first region and the second region and passes through the non-light transmitting layer. 
     In the liquid crystal display device according to the one embodiment of the present application, the non-display region may further include a third region opposed to the second region across the display region, and the first slit may further extend through the first region and the third region. 
     In the liquid crystal display device according to the one embodiment of the present application, the non-display region may further include a fourth region opposed to the first region across the display region, and the first slit may further extend through the second region and the fourth region and through the third region and the fourth region. 
     In the liquid crystal display device according to the one embodiment of the present application, the non-light transmitting layer may further have a second slit formed therein, which is different from the first slit, and a part of the second slit may be formed along the first slit and between the first slit and the display region. 
     In the liquid crystal display device according to the one embodiment of the present application, when the non-display region is viewed from the display region, the second slit may be formed so as to cover an end portion of the first slit. 
     In the liquid crystal display device according to the one embodiment of the present application, at least one of the first region or the second region may include a region in which the first slit and the second slit extend in parallel with each other, and a region in which only the first slit extends. 
     The liquid crystal display device according to the one embodiment of the present application may further include an upper frame arranged on a front surface side of the display panel. In the liquid crystal display device according to the one embodiment of the present application, the non-light transmitting layer may include an overlapping region overlapping with the upper frame in plan view, and a non-overlapping region free from overlapping with the upper frame in plan view, and the first slit formed in the overlapping region may have a width larger than a width of the first slit formed in the non-overlapping region. 
     According to one embodiment of the present application, there is provided a liquid crystal display device, including a display panel including a plurality of gate lines extending in a row direction, and a plurality of data lines extending in a column direction, the display panel including a display region in which an image is to be displayed, and a non-display region formed into a frame shape surrounding the display region, the non-display region having a non-light transmitting layer formed therein, which is configured to restrict transmission of light, the non-light transmitting layer having, at least on one side of the non-display region, a first slit and a second slit formed therein, which pass through the non-light transmitting layer, the non-display region including a region in which the first slit and the second slit extend in parallel with each other, and a region in which only the first slit extends. 
     According to one embodiment of the present application, there is provided a liquid crystal display device, including: a display panel including a plurality of gate lines extending in a row direction, and a plurality of data lines extending in a column direction; and an upper frame arranged on a front surface side of the display panel, the display panel including a display region in which an image is to be displayed, and a non-display region formed into a frame shape surrounding the display region, the non-display region having a non-light transmitting layer formed therein, which is configured to restrict transmission of light, the non-display region including an overlapping region overlapping with the upper frame in plan view, and a non-overlapping region free from overlapping with the upper frame in plan view, the non-light transmitting layer having a first slit formed therein, which passes through the non-light transmitting layer, the first slit formed in the overlapping region having a width larger than a width of the first slit formed in the non-overlapping region. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view for illustrating an entire configuration of a liquid crystal display device according to an embodiment of the present application. 
         FIG. 2  is a plan view for illustrating a schematic structure of a display panel according to the embodiment. 
         FIG. 3  is a sectional view for illustrating an example of a configuration of a liquid crystal display device according to a first embodiment of the present invention. 
         FIG. 4  is a view for illustrating a first example of a first slit formed in a non-light transmitting layer according to the first embodiment. 
         FIG. 5  is a view for illustrating a second example of the first slit formed in the non-light transmitting layer according to the first embodiment. 
         FIG. 6  is a view for illustrating a third example of the first slit formed in the non-light transmitting layer according to the first embodiment. 
         FIG. 7  is a view for illustrating a fourth example of the first slit formed in the non-light transmitting layer according to the first embodiment. 
         FIG. 8  is a view for illustrating a fifth example of the first slit formed in the non-light transmitting layer according to the first embodiment. 
         FIG. 9  is a sectional view for illustrating an example of a configuration of a liquid crystal display device according to a second embodiment of the present invention. 
         FIG. 10  is a view for illustrating a first example of a second slit formed in a non-light transmitting layer according to the second embodiment. 
         FIG. 11  is a view for illustrating a second example of the second slit formed in the non-light transmitting layer according to the second embodiment. 
         FIG. 12  is a view for illustrating a third example of the second slit formed in the non-light transmitting layer according to the second embodiment. 
         FIG. 13  is a view for illustrating a fourth example of the second slit formed in the non-light transmitting layer according to the second embodiment. 
         FIG. 14  is a view for illustrating an example of the first slit formed in a non-overlapping region. 
         FIG. 15  is a view for illustrating an example of the second slit formed on the outer side with respect to the first slit. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring to the accompanying drawings, embodiments of the present invention are described below, in the drawings, the same or similar components are denoted by the same reference symbols, and redundant description thereof is omitted herein. 
     First Embodiment 
       FIG. 1  is a perspective view for illustrating an entire configuration of a liquid crystal display device  1  according to this embodiment. As illustrated in  FIG. 1 , the liquid crystal display device  1  according to this embodiment includes a display panel  10 , an upper frame  20 , and a lower frame  30 . The display panel  10  includes a TFT substrate  11 , a CF substrate  12 , a liquid crystal layer (not shown) sandwiched between both the substrates, and a backlight unit (not shown) configured to radiate light from the back surface side. Further, the display panel  10  as supported between the upper frame  20  arranged on the front surface side of the display panel  10  (front surface side of the CF substrate  12 ) and the lower frame  30  arranged on the back surface side of the display panel  10  (back surface side of the TFT substrate  11 ). 
       FIG. 2  is a plan view for illustrating a schematic configuration of the display panel  10  according to this embodiment. The display panel  10  includes a display region  101  in which an image is to be displayed, and a non-display region  102  formed into a frame shape surrounding the display region  101 . 
     The display region  101  includes a plurality of data lines  13  extending in a column direction, and a plurality of gate lines  14  extending in a row direction. The respective data lines  13  are electrically connected to a source driver  230 . The respective gate lines  14  are electrically connected to a gate driver  240 . A plurality of pixels  15  are arranged in matrix (row direction and column direction) so as to correspond to respective intersecting portions of the respective data lines  13  and the respective gate lines  14 . For each pixel  15 , a thin film transistor  16 , a pixel electrode  17 , and a common electrode  18  are formed. The thin film transistor  16  is formed at each intersecting portion between each data line  13  and each gate line  14 . Note that, the direction in which the data line  13  extends is referred to as the column direction, and the direction in which the gate line  14  extends is referred to as the row direction. 
     The non-display region  102  includes a driving circuit (source driver  230  and gate driver  240 ) configured to cause image display in the display region  101 . The driving circuit is arranged at a peripheral portion of the display region  101  in plan view. Specifically, in plan view, the gate driver  240  is arranged on the left side of the display region  101 , and the source driver  230  is arranged on the upper side of the display region  101 . Note that, the arrangement of the driving circuit is not limited to the example illustrated in  FIG. 2 . For example, in plan view, the gate driver  240  may be arranged on each of the left side and the right side of the display region  101 , or the gate driver  240  may be arranged on any one of the left side and the right side of the display region  101 . Further, in plan view, the source driver  230  may be arranged on each of the upper side and the lower side of the display region  101 , or the source driver  230  may be arranged on any one of the upper side and the lower side of the display region  101 . 
       FIG. 3  is a sectional view for illustrating an example of the configuration of the liquid crystal display device  1  according to a first embodiment of the present invention. The liquid crystal display device  1  includes the display panel  10 , the upper frame  20 , and the lower frame  30 . The display panel  10  includes the TFT substrate  11  arranged on the back surface side, the CF substrate  12  arranged on the front surface side, a liquid crystal layer  130  sandwiched between the TFT substrate  11  and the CF substrate  12 , a sealing member  140  surrounding the liquid crystal layer  130  and being sandwiched between the TFT substrate  11  and the CF substrate  12 , and a backlight unit  150  configured to radiate light from the back surface side. 
     In the TFT substrate  11 , the gate lines  14  are formed on a glass substrate  111 , and an insulating film  112  is formed so as to cover the gate lines  14 . Further, the data lines  13  are formed on the insulating film  112 , and an insulating film  113  is formed so as to cover the data lines  13 . Further, the common electrode  13  is formed on the insulating film  113 , and an insulating film  114  is formed so as to cover the common electrode  18 . Further, the pixel electrode  27  is formed on the insulating film  114 , and an alignment film (not shown) is formed so as to cover the pixel electrode  17 . Although not shown, a polarizing plate and the like are further formed in the TFT substrate  11 . 
     In the CF substrate  12 , a non-light transmitting layer  122  (black matrix) configured to restrict the transmission of light and a colored layer  123  (for example, a red color filter  123   r , a green color filter  123   g , and a blue color filter  123   b ) configured to transmit light are formed on a glass substrate  121 , and an overcoat layer  124  is formed so as to cover those layers. Further, an alignment film (not shown) is formed on the overcoat layer  124 . Although not shown, a polarizing plate and the like are further formed in the CF substrate  12 . Further, in the CF substrate  12 , the non-light transmitting layer  122  and the colored layer  123  are formed an a stripe pattern in the display region  101 , and the non-light transmitting layer  122  is formed in the non-display region  102 . 
     The TFT substrate  11  is formed into a rectangular shape that is larger than the CF substrate  12 , and terminals to be electrically connected to various wirings such as the data lines  13  and the gate lines  14  are arranged at a peripheral, edge portion that does not overlap with the CF substrate  12 . In  FIG. 3 , a gate terminal  241  electrically connected to the gate line  14  is arranged, and the gate driver  240  is mounted on the gate terminal  241 . Note that, the gate terminal  241  may be electrically connected to a flexible printed board having the gate driver  240  mounted thereon. 
     A method of driving the liquid crystal display device  1  is simply described. A data signal (data voltage) is supplied to each of the data lines  13  from the source driver  230 . A gate signal (gate voltage) is supplied to each of the gate lines  14  from the gate driver  240 . A common voltage Vcom is supplied to the common electrode  18  via a common wiring (not shown). When an ON voltage of a gate signal (gate ON voltage) is supplied to a gate line  14 , a thin film transistor  16  connected to the gate line  14  is turned on, and the data voltage is supplied to a pixel electrode  17  via a data line  13  connected to the thin film transistor  16 . An electric field is generated due to a difference between the data voltage supplied to the pixel electrode  17  and the common voltage Vcom supplied to the common electrode  19 . The electric field drives the liquid crystal to control transmittance of light emitted from the backlight unit  150 , thereby displaying an image. Note that, when color display is performed, the display is realized by supplying a desired data voltage to each of the data lines  13  connected to pixel electrodes  17  of pixels  15  corresponding to a red color filter  123   r , a green color filter  123   g , and a blue color filter  123   b  formed with stripe-like color filters. Note that, the common electrode  18  may be formed on the TFT substrate  11 , or may be formed on the CF substrate  12 . The above-mentioned method of driving the liquid crystal, display device  1  is merely an example, and other known methods can also be employed. 
     In this case, when a pulsed gate signal is applied to the gate line  14  from the gate driver  240  to display an image on the liquid crystal display device  1 , electric charges  300  generated by wiring coupling in the gate line  14  propagate to the display region  101  through the non-light transmitting layer  122 , and an electric field is generated between the electric charges  300  and the pixel electrode  17 . As described above, in the liquid crystal display device  1 , an image is displayed by controlling the transmittance of light passing through the liquid crystal layer  130  based on the electric field formed between the pixel electrode  17  and the common electrode  18 . When the electric field formed between the electric charges  300  and the pixel electrode  17  is applied to the liquid crystal layer  130 , the molecule alignment of the liquid crystal is changed, with the result that an unintended color display (color change) may occur in the display image. 
     In the first embodiment, a first slit  125  is formed in the non-light transmitting layer  122  formed in the non-display region  102  of the CF substrate  12 . Thus, the influence on a display image due to propagation to the display region  101  of the electric charges  300  generated by wiring coupling of the gate line  14  is reduced. 
     Now, the configuration of the first slit  125  formed in the non-light transmitting layer  122  according to the first embodiment is specifically described. 
       FIG. 4  is a view for illustrating a first example of the first slit  125  formed in the non-light transmitting layer  122  according to the first embodiment.  FIG. 4  is a plan view of the display panel  10  as viewed from the CF substrate  12  side. As illustrated in  FIG. 4 , in the non-display region  102  formed into a frame shape surrounding the display region  101 , the source driver  230 , the gate driver  240 , the non-light transmitting layer  122 , and the first slit  125  are formed. In  FIG. 4 , the illustration of the inside of the display region  101  and the illustration of various wirings such as the data lines  13  and the gate lines  14  are emitted. 
     The display region  101  is a substantially rectangular region having four sides, specifically, a first side  161  to a fourth side  164 . The display region  101  includes two sides (first side  161  and fourth side  164 ) extending in the column direction, and two aides (second side  162  and third side  163 ) connecting together the first side  161  and the fourth side  164  and extending in the row direction. Further, the gate driver  240  is arranged on one or both of the first side  165  side and the fourth side  164  side. Further, the source driver  230  is arranged on one or both of the second side  162  side and the third side  163  side. 
     The non-display region  102  is a frame-shaped region having four regions, specifically, a first region  102 A to a fourth region  102 D. In the non-display region  102 , the first region  102 A refers to a region in which the gate driver  240  is arranged, and the second region  102 B refers to a region in which the source driver  230  is arranged. The second region  102 B refers to one of two regions in contact with the first region  102 A, and the third region  102 C refers to the other of the two regions in contact with the first region  102 A (region opposed to the second region across the display region). The fourth region  102 D refers to a region in contact with the second region  102 B and the third region  102 C and opposed to the first region  102 A (region opposed to the first region across the display region). Note that, in  FIG. 4 , there is illustrated an example in which the gate driver  240  is arranged on the first side  161  side of the display region  101 , but the gate driver  240  may be arranged on the fourth side  164  side of the display region  101 . In this case, the first region  102 A corresponds to the region on the fourth side  164  side, in which the gate driver  240  is arranged. Note that, the gate driver  240  may be arranged in both of the first region  101 A and the fourth region  104 D. Further, in  FIG. 4 , there is illustrated an example in which the source driver  230  is arranged on the second side  162  side of the display region  101 , but the source driver  230  may foe arranged on the third side  163  side or the display region  101 . In this case, the second region  102 B corresponds to the region on the third side  163  side, in which the source driver  230  is arranged. Note that, the source driver  230  may be arranged in both of the second region  102 B and the third region  102 C. 
     In the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 4 , the first slit  125  is formed, which extends through the first region  102 A in which the gate driver  210  is arranged and the second region  102 B. The first slit  125  is formed so as to pass through the non-light transmitting layer  122 . The first slit  125  illustrated in  FIG. 4  is a single continuous slit, which seamlessly extends through the first region  102 A and the second region  102 B. In other words, one of the two end portions (first end portion E 1 ) of the first slit  125  is included in the first region  102 A, and the other thereof (second end portion E 2 ) is included in the second region  102 B. Further, the first slit  125  illustrated in  FIG. 4  extends linearly along the first side  161  of the display region  101  in the first region  102 A, and extends linearly along the second side  162  of the display region  101  in the second region  102 B. Therefore, the first slit  125  is formed so as to be bent substantially at a right angle at a corner portion of the non-display region  102  (corner portion at which the first region  102 A and the second region  1028  are in contact). Note that, the first slit  125  is not limited to an example of being formed so as to be bent substantially at a right angle at the corner portion of the non-display region  102 . For example, the first slit  125  may be formed so as to be curved into an arc shape at the corner portion of the non-display region  102 . Further, the first slit  125  may be formed into a shape extending along the outer shape of the display region  301 . 
     Note that, in  FIG. 4 , the first slit  125  extends through two regions, specifically, the first region  102 A and the second region  102 B, but the first slit  125  is not limited to this example. For example, the first slit  125  may extend through the first region  102 A and the third region  102 C. 
     The first slit  325  is formed so as to extend through the first region  102 A in which the gate driver  240  is arranged and through the second region  102 B formed in contact with the first region  102 A. Thus, the electric charges  300  generated by the wiring coupling of the gate line  14  in the first, region  102 A move on the outer side of the first slit  125  to reach the first end portion E 1  included in the first region  102 A or the second end portion E 2  included in the second region  102 B, to thereby propagate to the display region  101 . As described above, with this configuration, as compared to the case where the slit is formed only in the region in which the gate driver  240  is arranged, a path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken longer. With this, the influence on the display image due to the electric charges generated by the wiring coupling of the gate line  14  is reduced. 
       FIG. 5  is a view for illustrating a second example of the first slit  125  formed in the non-light transmitting layer  122  according to the first embodiment.  FIG. 5  is a plan view of the display panel  10  as viewed from the CF substrate  12  side. The second example of the first slit  125  illustrated in  FIG. 6  differs from the first example of the first slit  125  illustrated in  FIG. 4  in the shape of the first slit  125 , but other points are the same. Therefore, configurations similar to those in the first example of the first slit  125  illustrated in  FIG. 4  are denoted by the same reference symbols, and redundant description thereof is omitted herein. 
     In the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 5 , the first slit  125  is formed, which extends through the first region  102 A in which the gate driver  240  is arranged, the second region  102 B, and the fourth region  102 D. The first slit  125  is formed so as to pass through the non-light transmitting layer  122 . The first slit  125  illustrated in  FIG. 5  is a single continuous slit, which seamlessly extends through the first region  102 A, the second region  102 B, and the fourth region  102 D. In other words, one of the two end portions (first end portion E 1 ) of the first slit  12   b  is included in the first region  102 A, and the other thereof (second end portion E 2 ) is included in the fourth region  102 D. The first slit  125  illustrated in  FIG. 5  extends linearly along the first side  161  of the display region  101  in the first region  102 A, extends linearly along the second side  162  of the display region  101  in the second region  102 B, and extends linearly along the fourth side  164  of the display region  101  in the fourth region  102 D. Therefore, the first slit  125  is formed so as to be bent substantially at a right angle at a corner portion of the non-display region  102  (corner portion at which the first region  102 A and the second region  102 B are in contact and corner portion at which the second region  102 B and the fourth region  102 D are in contact). Note that, the first slit  125  is not limited to an example of being formed so as to be bent substantially at a right angle at each corner portion. For example, the first slit  125  may be formed so as to be curved into an arc shape at each corner portion. Further, the first slit  125  may be formed into a shape extending along the outer shape of the display region  101 . 
     The first slit  126  is formed so as to extend through the first region  102 A in which the gate driver  240  is arranged, the second region  102 B, and the fourth region  102 D. Thus, the electric charges  300  generated by the wiring coupling of the gate line  14  move on the outer side of the first slit  125  to reach the first end portion E 1  included in the first region  102 A or the second end portion E 2  included in the fourth region  102 D, to thereby propagate to the display region  301 . With this configuration, as compared to the case where the slit is formed only in the region in which the gate driver  240  is arranged, a path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken longer. With this, the influence on the display image due to the electric charges generated by the wiring coupling of the gate line  14  is reduced. 
     Note that, in  FIG. 5 , the first slit  125  extends through three regions, specifically, the first region  102 A, the second region  102 B, and the fourth region  102 D, but the first slit  125  is not limited to this example. For example, the first slit  125  may extend through the first region  102 A, the third region  102 C, and the fourth region  102 D. 
       FIG. 6  is a view for illustrating a third example of the first slit  125  formed in the non-light transmitting layer  122  according to the first embodiment.  FIG. 6  is a plan view of the display panel  10  as viewed from the CF substrate  12  side. The third example of the first slit  125  illustrated in  FIG. 6  differs from the first example of the first slit  125  illustrated in  FIG. 4  in the shape of the first slit  125 , but other points are the same. Therefore, configurations similar to those in the first example of the first slit  126  illustrated in  FIG. 4  are denoted by the same reference symbols, and redundant description thereof is omitted herein. 
     In the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 6 , the first slit  125  is formed, which extends through the first region  102 A in which the gate driver  240  is arranged and the second region  102 B, and further through the first region  102 A in which the gate driver  240  is arranged and the third region  102 C. The first slit  125  is formed so as to pass through the non-light transmitting layer  122 . The first slit  125  illustrated in  FIG. 6  is a single continuous slit, which seamlessly extends through the first region  102 A, the second region  102   b , and the third region  102 C. In other words, one of the two end portions (first end portion E 1 ) of the first slit  125  is included in the second region  102 B, and the other thereof (second end portion E 2 ) is included in the third region  102 C. Further, the first slit  125  illustrated in  FIG. 6  extends linearly along the first side  161  of the display region  101  in the first region  102 A, extends linearly along the second side  162  of the display region  101  in the second region  102 B, and extends linearly along the third side  163  of the display region  101  in the third region  102 C. Therefore, the first slit  125  is formed so as to be bent substantially at a right angle at a corner portion of the non-display region  102  (corner portion at which the first region  102 A and the second region  102 B are in contact and corner portion at which the first region  102 A and the third region  102 C are in contact). Note that, the first slit  125  is not limited to an example of being formed so as to be bent substantially at a right angle at each corner portion. For example, the first slit  125  may be formed so as to be curved into an arc shape at each corner portion. Further, the first slit  125  may be formed into a shape extending along the outer shape of the display region  101 . 
     The first slit  125  is formed so as to extend through the first region  102 A in which the gate driver  240  is arranged, the second region  102 B, and the third region  102 C. Thus, the electric charges  300  generated by the wiring coupling of the gate line  14  move on the outer side of the first slit  125  to reach the first end portion E 1  included in the second region  102 B or the second end portion E 2  included in the third region  102 C, to thereby propagate to the display region  101 . With this configuration, no matter which direction the electric charges  300  generated by the wiring coupling of the gate line  14  propagate between toward the first end portion E 1  and toward the second end portion E 2  of the first slit  125 , a distance for the electric charges  300  to propagate to the display region  101  can be taken long. With this, the influence on the display image duo to the electric charges  300  generated by the wiring coupling of the gate line  14  is reduced. 
       FIG. 7  is a view for illustrating a fourth example of the first slit  126  formed in the non-light transmitting layer  122  according to the first embodiment.  FIG. 7  is a plan view of the display panel  10  as viewed from the CF substrate  12  side. The fourth example of the first slit  125  illustrated in  FIG. 7  differs from the first example of the first slit  125  illustrated in  FIG. 4  in the shape of the first slit  125 , but other points are the same. Therefore, configurations similar to those in the first example of the first slit  125  illustrated in  FIG. 4  are denoted by the same reference symbols, and redundant description thereof is omitted herein. 
     In the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 7 , the first slit  125  is formed, which extends through the first region  102 A in which the gate driver  240  is arranged, the second region  102 B, and the fourth region  102 D, and further through the first region  102 A, the third region  102 C, and the fourth region  102 D. The first slit  125  is formed so as to pass through the non-light transmitting layer  122 . The first slit  125  illustrated in  FIG. 7  is a single continuous slit, which seamlessly extends through the first region  102 A, the second region  102 B, the third region  102 C, and the fourth region  102 D. In other words, the two end portions (first end portion E 1  and second end portion E 2 ) of the first slit  125  are included in the fourth region  102 D. In this case, the first end portion E 1  and the second end portion E 2  are formed for the purpose of releasing the static electricity generated in the display region  101  to the outside of the display region  101 , and the first slit  125  does not surround the entire circumference of the display region  101  in the present invention. Further, the first slit  125  illustrated in  FIG. 7  extends linearly along the first side  161  of the display region  101  in the first region  102 A, extends linearly along the second side  162  of the display region  101  in the second region  102 B, extends linearly along the third side  163  of the display region  101  in the third region  102 C, and extends linearly along the fourth side  164  of the display region  101  in the fourth region  102 D. Therefore, the first slit  125  is formed so as to be bent substantially at a right angle at a corner portion of the non-display region  102  (corner portion at which the first region  102 A and the second region  102 B are in contact, corner portion at which the first region  102 A and the third region  102 C are in contact, corner portion at which the second region  102 B and the fourth region  102 D are in contact, and corner portion at which the third region  102 C and the fourth region  102 D are in contact). Note that, the first slit  125  is not limited to an example of being formed so as to be bent substantially at a right angle at each corner portion. For example, the first slit  125  may be formed so as to be curved into an arc shape at each corner portion. Further, the first slit  125  may be formed into a shape extending along the outer shape of the display region  101 . 
     The first slit  125  is formed so as to extend through the first region  102 A in which the gate driver  240  is arranged, the second region  102 B, the third region  102 C, and the fourth region  102 D. Thus, the electric charges  300  generated by the wiring coupling of the gate line  14  move on the outer side of the first slit  125  to reach the first end portion E 1  or the second end portion E 2  included in the fourth region  102 D, to thereby propagate to the display region  101 . With this configuration, no matter which direction the electric charges  300  generated by the wiring coupling of the gate line  14  propagate between toward the first end portion E 1  and toward the second end portion E 2  of the first slit  125 , a distance for the electric charges  300  to propagate to the display region  101  can be taken long. With this, the influence on the display image due to the electric charges  300  generated by the wiring coupling of the gate line  14  is reduced. 
     Note that, in  FIG. 7 , the first slit  125  extends through four regions, specifically, the first region  102 A, the second region  102 B, the third region  102 C, and the fourth region  102 D, and the two end portions of the first slit  125  are arranged in the fourth region  102 D. However, the first slit  125  is not limited to this example. For example, the two end portions of the first slit  125  may be arranged in the second region  102 B, or may be arranged in the third region  102 C. 
     Further, in the third example of the first slit  125  illustrated in  FIG. 6  and the fourth example of the first slit  125  illustrated in  FIG. 7 , the first slit  125  may be arranged so as to be line symmetric with respect to the center line in the column direction of the display region  101 . When the first slit  125  is arranged to be line symmetric with respect to the center line in the column direction of the display region  101 , the distance that the electric charges  300  generated by the wiring coupling of the gate line  14  move can be equalized between the case where the electric charges  300  propagate to the display region  101  from the first end portion E 1  and the case where the electric charges  300  propagate to the display region  101  from the second end portion E 2 . 
     In the examples of the first slit  12   b  according to the first embodiment described above, there is described an example in which the single first slit  125  is formed, but a plurality of first slits  125  may be formed. 
       FIG. 8  is a view for illustrating a fifth example of the first slit  125  formed in the non-light transmitting layer  122  according to the first embodiment. In  FIG. 8 , the gate drivers  240  (gate driver  240   a  and gate driver  240   b ) are arranged in both of the first region  102 A and the fourth region  102 D. In this case, each of the two gate drivers  240  applies a pulsed gate signal to the gate line  14 , and hence the electric charges  300  are generated by the wiring coupling of the gate line  14  in each of the first region  102 A and the fourth region  102 D. In view of this, as illustrated in  FIG. 8 , two first slits  125  (first slit  125   a  and first slit  125   b ) are formed so as to correspond to the regions (first region  102 A and fourth region  102 D) in which the two gate drivers  240  are arranged. For example, in the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 8 , the first slit  125   a  is formed, which extends through the first region  102 A in which the gate driver  240   a  is arranged and the second region  102 B, and further through the first region  102 A and the third region  102 C. The first silt  125   a  is a single continuous slit, which seamlessly extends through the first region  102 A, the second region  102 B, and the third region  102 C. One of the two end portions (first end portion E 1   a ) of the first slit  125   a  is included in the second region  102 B, and the other thereof (second end portion E 2   a ) is included in the third region  102 C. 
     Further, in the non-light transmitting layer  122  formed in the non-display region  102 , the first slit  125   b  is formed, which extends through the fourth region  102 D in which the gate driver  240   b  is arranged and the second region  102 B, and further through the fourth region  102 D and the third region  102 C. The first slit  125   b  is a single continuous slit, which seamlessly extends through the second region  102 B, the third region  102 C, and the fourth region  102 D. One of the two end portions (first end portion E 1   b ) of the first slit  125   b  is included in the second region  102 B, and the other thereof (second end portion E 2   b ) is included in the third region  102 C. 
     Further, the length of the first slit  125   a  may be equal to the length of the first slit  125   b . For example, as illustrated in  FIG. 8 , the first slit  125   a  and the first slit  125   b  may be arranged so as to be line symmetric with respect to the center line in the row direction of the display region  101 . When the length of the first slit  125   a  is set equal to the length of the first slit  125   b  as described above, the distance for the electric charges  300  generated in the first region  102 A to propagate to the display region  101  can be set equal to the distance for the electric charges  300  generated in the fourth region  102 D to propagate to the display region  101 . 
     Note that, the first slit  125   a  may be formed so as to extend through the first region  102 A and the second region  102 B, and the first slit  125   b  may be formed so as to extend through the third region  102 C and the fourth region  102 D. Further, the first slit  125   a  may be formed so as to extend through the first region  102 A and the third region  102 C, and the first slit  125   b  may be formed so as to extend through the second region  102 B and the fourth region  102 D. 
     Further, the first slit  125  may be formed so as to extend through the region in which the gate driver  240  is arranged and the region in which the source driver  230  is arranged. Specifically, for example, when the gate driver  240  is arranged in the first region  102 A and the source driver  230  is arranged in the third region  102 C, the first slit  125  may be formed so as to extend through the first region  102 A and the third region  102 C. Further, when the gate driver  240  is arranged in each of the first region  102 A and the fourth region  102 D and the source driver  230  is arranged in the second region  102 B, as illustrated in  FIG. 5 , the first slit  125  may be formed so as to extend through the first region  102 A, the second region  102 B, and the fourth region  102 D. In the liquid crystal display device  1 , there is a case where the source driver  230  supplies a control signal to the gate driver  240 . In this case, a control signal line configured to supply a control signal from the source driver  230  to the gate driver  240  is arranged at the corner portion of the non-display region  102 , and hence there is a fear in that the electric charges  300  generated by the wiring coupling of the control signal line arranged at the corner portion may propagate to the display region  101 . In such a case, when the first slit  125  is formed so as to extend through the region in which the gate driver  240  is arranged and the region in which the source driver  230  is arranged, the influence on the display image due to the electric charges  300  generated by the wiring coupling of the control signal line arranged at the corner portion of the non-display region  102  can be reduced. 
     Second Embodiment 
     In a second embodiment of the present invention, in addition to the first slit  125  described in the first embodiment, a second slit  126  different from the first slit  125  is formed.  FIG. 9  is a sectional view for illustrating an example of the configuration of the liquid crystal display device  1  according to the second embodiment. The sectional structure of the liquid crystal display device  1  according to the second embodiment illustrated in  FIG. 9  differs from the sectional structure of the liquid crystal display device  1  according to the first embodiment illustrated in  FIG. 3  in the point that the second slit  126  is included, but other points are the same.  FIG. 10  is a view for illustrating a first example of the second slit  126  formed in the non-light transmitting layer  122  according to the second embodiment.  FIG. 10  is a plan view of the display panel  10  as viewed from the CF substrate  12  side. The second embodiment illustrated in  FIG. 10  differs from the first embodiment illustrated in  FIG. 4  in the point that the second slit  126  is included, but other points are the same. Therefore, in  FIG. 9  and  FIG. 10 , configurations similar to those in the first embodiment are denoted by the same reference symbols, and redundant description thereof is emitted herein. 
     In the non-light transmitting layer  122  formed in the non-display region  102  illustrated in  FIG. 10 , first, the first slit  125  is formed. For example, as illustrated in  FIG. 10 , the first slit  125  is formed so as to extend through the first region  102 A in which the gate driver  240  is arranged and the second region  102 B. Note that, the first slit  125  may be formed into the shape illustrated in  FIG. 5  to  FIG. 8 . Then, in the non-light transmitting layer  122  formed in the non-display region  102 , the second slit  126  different from the first slit  125  is formed in addition to tire first slit  125 . The second slit  126  illustrated in  FIG. 10  is a single continuous slit, which is formed through the first region  102 A, the second region  102 B, the third region  102 C, and the fourth region  102 D. 
     The second slit  126  is formed so as to extend on the inner side (display region  101  side) of each of the two end portions of the first slit  125 . When the second slit  126  is not formed, the electric charges  300  generated by the wiring coupling of the gate line  34  move to the display region  101  from the first end portion E 1 , for example. In order to avoid such movement of the electric charges  300  to the display region  101  from the end portion of the first slit  125 , the second slit  126  may be formed so as to extend at least on the inner side (display region  101  side) of each of the two end portions of the first slit  125 . In other words, in a direction in which the end portion of the first slit  125  reaches the display region  101  at a shortest distance (in this case, the column direction), the end portion of the first slit  125  is prevented from overlapping with the end portion of the second slit  126 . In other words, the second slit  126  is formed so that, when the non-display region  102  is viewed from the display region  101 , the second slit  126  covers the end port ion of the first slit  125 . Further, a part of the second silt  326  is formed along the first slit  125  and between the first slit  125  and the display region  101 . With this, the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  103  can be taken long. 
     Further, it is preferred that a part of the second slit  126  be formed in a region in which the first slit  125  is not formed in the non-display region  102 . With this, in the non-display region  102 , the first slit  125  and the second slit  126  are formed so that at least one of the first slit  125  or the second slit  126  surrounds the display region  101 . Therefore, the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken long. Further, in the non-display region  102 , the first slit  125  and the second slit  126  are formed so that at least one of the first slit  125  or the second slit  126  surrounds the display region  101 , and hence propagation to the display region  101  of the electric charges generated by the wiring coupling of various wirings other than the gate line  14  can be reduced. Note that, the second slit  126  may be formed in a region in which wiring other than the gate line  14  (for example, testing wiring) is arranged, in which the electric charges are generated by the wiring coupling. 
     Further, it is preferred that each of the two end portions of the second slit  126  be arranged in a region in which the first slit  125  is formed, and each of the two end portions of the second slit  126  overlap with the first slit  125  in a direction opposite to the direction in which the end portion of the second slit  126  reaches the display region  101  at the shortest distance. With this, the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken long. Further, the end portion of the first slit  125  and the end portion of the second slit  126  may be arranged so that the distance therebetween is long. For example, each of the two end portions of the second slit  126  may be arranged in a region in which the first slit  125  is formed, and each of the two end portions of the second slit  126  may overlap with the center portion of the first slit  125  in the direction opposite to the direction in which the end portion of the second slit  126  reaches the display region  101  at the shortest distance. With this, the movement distance of the electric charges  300  moving from the first end portion E 1  of the first slit  125  to a first end portion E 11  of the second slit  126  and the movement distance of the electric charges  300  moving from the second end portion E 2  of the first slit  125  to a second end portion E 12  of the second slit  126  can be set equal to each other. 
     Specifically, as illustrated in  FIG. 10 , the second slit  126  is formed so as to cover the end portion of the first slit  125  when the non-display region  102  is viewed from the display region  101 . Further, a part of the second slit  126  extends along the first slit  125  and between the first slit  125  and the display region  101 . Further, a part of the second slit  126  is formed through the third region  102 C and the fourth region  1025  in which the first slit  125  is not formed. Further, each of the first end portion E 11  and the second end portion E 12  of the second slit  126  is included in the first region  102 A. Further, the first end portion E 11  is arranged so as to overlap with the first slit  125  in the direction opposite to the direction in which the first end portion E 11  reaches the display region  101  at the shortest distance. Further, the second end portion E 12  is arranged so as to overlap with the first slit in the direction opposite to the direction in which the second end portion E 12  reaches the display region  101  at the shortest distance. In this case, the first end portion E 11  and the second end portion E 12  are formed so at to release the static electricity generated in the display region  101  to the outside of the display region  101 , and the second slit  126  does not surround the entire circumference of the display region  101  in the present invention. 
     As described above, the shape and the arrangement position of the second slit  126  are determined based on the shape and the arrangement position of the first slit  125  (in particular, the position of the end portion of the first slit  125 ). When the second slit  126  is formed as described above, the electric charges moving on the outer side of the first slit  125  can be prevented from moving toward the display region  101  at the first end portion E 1  or the second end portion E 2 . Then, the electric charges reaching first end portion E 1  or the second end portion E 2  move between the first slit  125  and the second slit  126 , and then move toward the display region  101  from the and portion of the second slit  126 . As described above, the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken long, and hence the influence on the display image due to the electric charges generated by the wiring coupling of the gate line  14  further reduced. 
     Note that, the second slit  126  is not limited to the shape illustrated in  FIG. 10 . The shape of the second slit  126  can be changed as appropriate as long as the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken long. For example, when the second slit  126  is further formed in addition to the first slit  125  illustrated in  FIG. 5 , the second slit  126  as illustrated in  FIG. 11  may be formed.  FIG. 11  is a view for illustrating a second example of the second slit  126  formed in the non-light transmitting layer  122  according to the second embodiment. As illustrated in  FIG. 11 , the second slit  126  is formed based on the shave and the arrangement position of the first slit  125 . Specifically, the second slit  126  is formed so as to cover the end portions (first end portion E 1  and second end portion E 2 ) of the first slit  125  when the non-display region  102  is viewed from the display region  101 . Farther, a part of the second slit  126  is formed along the first slit  125  and between the first slit  125  and the display region  101 . Further, a part of the second slit  126  is formed through the third region  102 C in which the first  125  is not formed. Further, the first end portion E 11  of the second slit  126  is included in the first region  102 A. Further, the second end portion E 12  of the second slit  126  is included in the fourth region  102 D. Further, the first end portion E 11  is arranged so as to overlap with the first slit  125  in the direction opposite to the direction in which the first end portion E 11  reaches the display region  101  at the shortest distance. Further, the second end portion E 12  is arranged so as to overlap with the first slit  125  in the direction opposite to the direction in which the second end portion E 12  reaches the display region  101  at the shortest distance. Note that, in  FIG. 11 , the first end portion E 11  and the second end portion E 12  of the second slit  126  may be included in the second region  102 B. 
     When the second slit  126  is further formed in addition to the first slit  125  illustrated in  FIG. 7 , the second slit  126  as illustrated in  FIG. 12  may be formed.  FIG. 12  is a view for illustrating a third example of the second slit  126  formed in the non-light transmitting layer  122  according to the second embodiment. As illustrated in  FIG. 12 , the second slit  126  is formed based on the shape and the arrangement position of the first slit  125 . Specifically, the second slit  126  is formed so as to cover the end portions (first end portion E 1  and second end portion E 2 ) of the first slit  125  when the non-display region  102  viewed from the display region  101 . Further, a part of the second slit  126  is formed along the first slit  125  and between the first slit  125  and the display region  101 . Further, each of the first end portion E 11  and the second end portion E 12  of the second slit  126  is included in the first region  102 A. Further, the first end portion E 11  is arranged so as to overlap with the center portion of the first slit  125  in the direction opposite to the direction in which the first end portion E 11  reaches the display region  101  at the shortest distance. Further, the second end portion  112  is arranged so as to overlap with the center portion of first slit  125  in the direction opposite to the direction in which the second end portion  112  reaches the display region  101  at the shortest distance. Note that, in  FIG. 12 , the first end portion E 11  of the second slit  126  man be formed in the second region  102 B, and the second end portion E 12  of the second slit  126  may be formed in the third region  102 C. Further, the first end portion E 11  of the second slit  126  may be formed in the fourth region  102 D, and the second end portion E 12  of the second slit  126  may be formed in the third region  102 C. Further, first end portion E 11  of the second slit  125  may be formed in the fourth region  102 D, and the second end portion  112  of the second slit  126  may be formed in the first region  102 A. 
     Further, the second slit  126  may include a plurality of slits. For example, in  FIG. 10  and  FIG. 11 , the second slit  125  may include two slits, specifically, a slit formed so as to cover the first end portion E 1  of the first slit  125  when the non-display region  102  is viewed from the display region  101 , and a slit formed so as to cover the second end portion E 2  of the first slit  125  when the non-display region  102  is viewed from the display region  101 . Further,  FIG. 13  is a view for illustrating a fourth example of the second slit  126  formed in the non-light transmitting layer  122  according to the second embodiment. As illustrated in  FIG. 13 , for example, when the second slit  126  is further formed in addition to the plurality of first slits  125  illustrated in  FIG. 8 , the second slit  126  may include two second slits  126  (second slit  126   a  and second slit  126   b ). The two second slits  126  may be formed based on the shapes and the arrangement positions of the respective two first slit  125  (first slit  125   a  and first slit  125   b ). Specifically, when the non-display region  102  is viewed from the display region  101 , the second slit  126  (second slit  126   a  and second slit  126   b ) is formed so as to cover end portion of the first slit  125  (first slit  125   a  and first slit  125   b ). In  FIG. 13 , the second slit  126   a  is formed so as to extend through the first region  102 A, the second region  102 B, and the fourth region  102 D, and the second slit  126   b  is formed so as to extend through the first region  102 A, the third region  102 C, and the fourth region  102 D. Note that, in  FIG. 13 , the second slit  125   a  may be formed in the second region  102 B, and the second slit  126   b  may be formed in the third region  102 C. 
     Based on the example of the second slit  126  formed in the non-light transmitting layer  122  according to the second embodiment described above, it can be said that at least one side of the non-display region  102  (in other words, any one of the first region  102 A to the fourth region  102 D) includes a region in which the first slit  125  and the second slit  126  extend in parallel with each other, and a region in which only the first slit  125  extends. 
     Further, as illustrated in  FIG. 3  and  FIG. 9 , the non-light transmitting layer  122  includes an overlapping region  103  overlapping with the upper frame  201  in plan view, and a non-overlapping region  104  free from overlapping with the upper frame  20  in plan view. The non-overlapping region  104  can be easily viewed by a viewer, and hence it is preferred that the first slit  125  and the second slit  126  described above be formed in the overlapping region  103 . However, when there is no room for forming a slit in the overlapping region  103 , the first slit  125  and the second slit  126  are formed in the non-overlapping region  104 . Further, a part of the first slit  125  may be formed in the non-overlapping region  104 . When a part of the first slit  125  is formed in the non-overlapping region  104 , the end portion of the first slit  125  may be prevented from being arranged in the non-overlapping region  104 . 
       FIG. 14  is a view for illustrating an example of the first slit  125  formed in the non-overlapping region  104 . In  FIG. 14 , the gate driver  210  (gate driver  240   a  or gate driver  240   b ) is arranged in each of the first region  102 A and the fourth region  102 D. Further, the first slit  125  includes two first slits  125  (first slit  125   c  and first slit  125   d ). Further, the second slit  126  includes two second slits  126  (second slit  126   c  and second slit  126   d ). The first slit  125   c  is formed so as to extend through the first region  102 A, the second region  102 B, and the fourth region  102 D. The first slit  125   d  is formed so as to extend through the first region  102 A, the third region  102 C, and the fourth region  102 D. Further, a part of the first slit  125   c  (part included in the second region  102 B) is formed in the non-overlapping region  104 . Further, a part of the first slit  125   d  (part included in the third region  102 C) is formed in the non-overlapping region  104 . In this case, the two end portions of the first slit  125   c  are respectively arranged in the first region  102 A and the fourth region  102 D so as not to be arranged in the non-overlapping region  104 . Further, the two end portioned of the first slit  125   d  are respectively arranged in the first region  102 A and the fourth region  102 D so as not to be arranged in the non-overlapping region  104 . Further, the second slit  126   c  is formed so that, in the first region  102 A, the second slit  126   c  covers the end portion of the first slit  125   c  and the end portion of the first slit  125   d  when the non-display region  102  is viewed from the display region  101 . Further, the second slit  126   d  is formed so that, in the fourth region  102 D, the second slit  120   d  covers the end portion of the first slit  125   c  and the end portion of the first slit  125   d  when the non-display region  102  is viewed from the display region  101 . As described above, the end portion of the first slit  125  is prevented from being arranged in the non-overlapping region  104 , and thus the end portion of the first slit  125  is hardly viewed by the viewer. Further, even when the end portion of the first slit  125  is arranged in the region in which the gate driver  240  is arranged, the second slit  126  is formed so as to cover the end portion of the first slit  125  when the non-display region  102  is viewed from the display region  101 . Therefore, the path for the electric charges  300  generated by the wiring coupling of the gate line  14  to propagate to the display region  101  can be taken long. Further, similarly, a part of the second slit  126  may be formed in the non-overlapping region  104 . When a part of the second slit  126  is formed in the non-overlapping region  104 , the end portion of the second slit  126  may be prevented from hexing formed in the non-overlapping region  104 . 
     Further, the width of the slit formed in the overlapping region  103  may be larger than the width of the slit formed in the non-overlapping region  104 . With this, the passing through the slit formed in the non-overlapping region  104  is hardly viewed by the viewer. 
     Further, the second slit  126  may be formed on the outer side with respect to the first slit  125 .  FIG. 15  is a view for illustrating an example of the second slit  125  formed on the outer side with respect to the first slit  125 . In  FIG. 15 , the gate driver  240  gate driver  240  gate driver  240   b ) is arranged in of the first region  102 A and the fourth region  102 D. Further, the first slit  125  is formed so as to extend through the first region  102 A, the second region  102 B, the third region  102 C, and the fourth region  102 D. Each of the two end portions of the first slit  125  is arranged in the third region  102 C. A part of the first slit  125  (part included in the first region  102 A, the third region  103 C, and the fourth region  104 D) is formed in the non-overlapping region  104 . In this case, when wiring such as the testing wiring, in which the electric charges are generated by the wiring coupling, is arranged in the third region  102 D, the second slit  126  is formed on the outer side with respect to the first slit  125  in the third region  102 C. With this, the path for the electric charges generated by the wiring coupling of the testing wiring or the like to propagate to the display region  101  can be taken long, and hence the influence display image due to the electric charges can be reduced. 
     Further, each of the first slit  125  and the second slit  126  may be filled with a color resist of blue, red, green, or the like. For example, when each of the first slit  125  and the second slit  126  is filled with the blue resist, the color of the light passing through each of the first slit  125  and the second slit  126  is blue. Thus, when the viewer close to the display surface views the non-display region, the light passing through each of the first slit  125  and the second slit  126  is obscure. 
     Further, in the above mentioned embodiment, there is described an example in which the first slit  125  and the second slit  126  are formed the non-light transmitting layer  122 , but three or more slits may be formed in the non-light transmitting layer  122 . 
     While there have been described what are at present considered to be certain embodiments of the invention, it will be understood that various modifications may be made thereto, and it is intended that the appended claims cover all such modifications as fall within the true spirit and scope of the invention.