Patent Publication Number: US-2013235298-A1

Title: Display device

Description:
TECHNICAL FIELD 
     The present invention relates to a display device equipped with a bezel. 
     BACKGROUND ART 
     In a liquid crystal display device, for example, a liquid crystal panel and a backlight device that illuminates the liquid crystal panel are housed in a frame (resin or metal frame), thereby being held as one component. Around this frame, a supporting frame called bezel is attached. The bezel is formed by stamping a metal plate into a frame shape. By providing such a metal bezel, the strength of a liquid crystal display device can be improved, and it is also possible to prevent contamination and light leakage that are likely to occur at the periphery of a liquid crystal panel. In particular, many of 10-inch to 20-inch liquid crystal panels employ a configuration in which the above-mentioned frame assembly including a liquid crystal panel and a backlight device is held between a front bezel and a rear bezel. 
     A conventional bezel structure as described above will be explained with reference to  FIG. 11 .  FIG. 11A  is an exploded perspective view of a liquid crystal display device that uses a conventional bezel. In  FIG. 11A , a frame (not shown), a backlight device (not shown), and a liquid crystal panel  220  are stacked in this order in a rear bezel  240 . 
     The rear bezel  240  has a plurality of tabs  242  formed on the side faces on the periphery thereof. On the inner walls around a front bezel  210 , a plurality of tabs  212  are formed. Although  FIG. 11A  only shows the tabs on one side of each of the front bezel  210  and the rear bezel  240 , a plurality of tabs are also formed on sides opposite to the respective one sides of the front bezel  210  and the rear bezel  240 . 
       FIG. 11B  is a front cross-sectional view of a cross section cutting through the tab  212  and the tab  242  when the front bezel  210  is moved in the direction Y and is placed on the rear bezel  240 . In  FIG. 11B , in a recessed portion formed on the top side of the rear bezel  240 , a frame  250 , a backlight device  230 , and a liquid crystal panel  220  are stacked and placed in this order. 
     When the front bezel  210  is placed on the rear bezel  240 , the tab  212  formed on the side wall  211  of the front bezel  210  makes contact with a side face  241  of the rear bezel  240 , and the tab  212  is elastically deformed away from the side face  241  as a result of being pressed by the side face  241  of the rear bezel  240 . When the front bezel  210  is further pushed down, and the tab  212  reaches the bottom of the tab  242  of the rear bezel  240 , the tab  212  engages with the tab  242  due to elastic recovery. As a result, the rear bezel  240  is fixed to the front bezel  210 , sandwiching the frame  250 , the backlight device  230 , and the liquid crystal panel  220  therebetween. 
     A liquid crystal display device configured such that after a liquid crystal display panel is placed in a frame body, a connecting portion between the liquid crystal display panel and a flexible printed circuit is supported from above and below is also known (see Patent Document 1, for example). 
     RELATED ART DOCUMENT 
     Patent Document 
     
         
         Patent Document 1 Japanese Patent Application Laid-Open Publication No. 2003-28004 
       
    
     SUMMARY OF THE INVENTION 
     Problems to be Solved by the Invention 
     However, the above-mentioned conventional technologies have the following problems, respectively. First, in the configuration using a front bezel and a rear bezel, it is necessary to have the plurality of tabs  212  of the front bezel  210  engaged with the plurality of tabs  242  of the rear bezel  240 , and the engaging state of each tab needs to be confirmed thereafter. As a result, a step of attaching the front bezel  210  and the rear bezel  240  to the liquid crystal display panel  220 , which are assembled with a frame and a backlight device, is made complex, which causes a problem. For example, if the tabs  212  and  242  are not engaged properly due to an error in the process, the front bezel  210  and the rear bezel  240  cannot be securely fixed to each other. 
     Also, if the tabs are disengaged due to a defect in bezel components after attaching the front bezel  210  and the rear bezel  240  to the liquid crystal display panel  220 , the front bezel  210  and the rear bezel  240  cannot be securely fixed to each other, similar to above. 
     If the front bezel  210  and the rear bezel  240  are not securely fixed, the strength of the liquid crystal display device cannot be maintained, possibly causing damage to the liquid crystal display panel  220 . It is also possible to cause degradation of display quality due to contamination and light leakage that occur at the periphery of the liquid crystal display panel  220 . 
     On the other hand, in the configuration of Patent Document 1, because there is no component that corresponds to tabs for fixing bezels, the process of placing a liquid crystal display panel in a frame body is not likely to be made complex, or a problem of disengaging tabs due to a defect in bezel components does not occur. 
     However, in the configuration of Patent Document 1, the periphery of an upper polarizing plate (display surface side) of the liquid crystal display panel is not covered by a frame body. This makes contamination and light leakage more likely to occur at the periphery of the liquid crystal display panel, resulting in degradation of display quality. 
     The present invention was made in view of the above-mentioned problems, and an object thereof is to provide a display device that can make a process of attaching a bezel to a display panel simpler and that can prevent degradation of display quality due to damage of the display panel, contamination, or light leakage. 
     Means for Solving the Problems 
     A display device of the present invention includes: a display panel; a first bezel; and second bezels, wherein the display panel is formed in a rectangular plate shape having a display surface, a rear surface opposite to the display surface, and four end faces continued from the display surface and the rear surface, wherein the first bezel covers at least a part of the rear surface of the display panel, opposite end faces of the display panel, and peripheral portions of the display surface along the opposite end faces, wherein the second bezels are respectively formed in a box shape having an opening that opens in one direction only, and wherein the openings of the second bezels respectively enclose end faces of the display panel not covered by the first bezel, peripheral portions of the display surface along the end faces not covered by the first bezel, and side end portions of the first bezel that covers the opposite end faces of the display panel. 
     Effects of the Invention 
     According to the display device of the present invention, the first bezel covers at least a part of the rear surface of the display panel, opposite end faces of the display panel, and peripheral portions of the display surface along the opposite end faces. The second bezels are respectively formed in a box shape having an opening that opens in one direction only, and the openings of the second bezels respectively enclose end faces of the display panel not covered by the first bezel, peripheral portions of the display surface along the end faces not covered by the first bezel, and side end portions of the first bezel covering the opposite end faces of the display panel. First, at least a part of the rear surface of the display panel, opposite end faces, and peripheral portions of the display surface along the opposite end faces are covered by the first bezel, and then end faces of the display panel not covered by the first bezel, peripheral portions of the display surface along the end faces not covered by the first bezel, and side end portions of the first bezel covering the opposite end faces of the display panel are placed in the openings of the second bezels, respectively. This makes it possible to make a process of attaching bezels to the display panel simpler. 
     Also, because the first bezel can be placed and pressed in the openings of the box-shaped second bezels, damage to a liquid crystal panel caused by the bezels coming off is not unlikely to occur. Further, by covering the peripheral portions of the display panel with the first bezel and the second bezels, it is possible to prevent contamination and light leakage at the periphery of the display panel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view of a liquid crystal display device  1  that includes a first bezel  10  and a display panel  30 . 
         FIG. 2A  is an enlarged front view around an end portion  13  when the display panel  30  is placed on the first bezel  10 . 
         FIG. 2B  is an enlarged front view showing a state after the first bezel  10  is folded along the bottom portion  331  of an end face  33 . 
         FIG. 3  is a perspective view showing a state in which the display panel  30  and the first bezel  10  are assembled, and showing second bezels  20  and  40 . 
         FIG. 4A  is an enlarged perspective view of the second bezel  20  shown in  FIG. 3 . 
         FIG. 4B  is an enlarged perspective view of the second bezel  40  shown in  FIG. 3 . 
         FIG. 5  is a perspective view of the liquid crystal display device  1  provided with the second bezels  20  and  40  after attaching the first bezel  10  to the display panel  30 . 
         FIG. 6  shows an end portion of a cross-sectional view along the portion  6 - 6  of  FIG. 5 . 
         FIG. 7A  is an exploded plan view for illustrating a display device according to Embodiment 2. 
         FIG. 7B  is a plan view of the liquid crystal display device  1  provided with the second bezels  20  and  40  after attaching the first bezel  10  to the display panel  30 . 
         FIG. 8  is a partial enlarged view around a tab  27  of the second bezel  20 . 
         FIG. 9A  is a partial enlarged view around a tab  17  of the first bezel  10 . 
         FIG. 9B  is a partial enlarged view of a modification example in which a hole  19  is provided instead of the tab  17  of the first bezel  10 . 
         FIG. 10A  is an exploded perspective view for illustrating a display device according to Embodiment 3. 
         FIG. 10B  is a perspective view of the liquid crystal display device  1  in which two third bezels  80  are attached to the display panel  30  that has the first bezel  10  (not shown) and the second bezels  20  and  40  attached thereto. 
         FIG. 11A  is an exploded perspective view of a liquid crystal display device that uses a conventional bezel. 
         FIG. 11B  is a front cross-sectional view of a cross section cutting through a tab  212  and a tab  242 . 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     In a display device according to one embodiment of the present invention, it is preferable that a first bezel be folded in advance at a substantially right angle at a position that faces a boundary between an end face and a display surface covered by the first bezel. This makes it possible to improve a work efficiency in attaching the first bezel to the display panel. 
     In the display device according to one embodiment of the present invention, it is preferable that an engaging structure that holds the first bezel and the second bezel be provided at a position where the first bezel and the second bezel make contact with each other. This makes it possible to hold the first bezel and the second bezel more reliably. 
     The display device according to one embodiment of the present invention may further include third bezels respectively formed in a box shape having an opening in one direction only, and end faces of the first bezel that covers the opposite end faces, end portions of the first bezel that covers the peripheral portions of the display surface along the opposite end faces, and end portions of the second bezels in a lengthwise direction may be placed in the openings of the third bezels, respectively. This makes it possible to further improve the strength of the display device, and it is possible to effectively prevent contamination from the end faces of the liquid crystal panel and light leakage from the end portions thereof. 
     Below, embodiments of the present invention will be specifically explained with reference to figures. In the descriptions below, an example of using the present invention for a transmissive liquid crystal display device will be explained. The dimensions of constituting members in respective figures do not truthfully represent the dimensions of actual constituting members, dimensional ratios of the respective constituting members, and the like. 
     Embodiment 1 
       FIGS. 1 to 6  schematically show a manufacturing process of a liquid crystal display device  1  of one embodiment of the present invention. 
       FIG. 1  is an exploded perspective view of a liquid crystal display device  1  that includes a first bezel  10  and a display panel  30 . The display panel  30  shown in  FIG. 1  is formed by stacking a backlight device and a liquid crystal panel in this order and holding them as one component, for example. The display panel  30  is formed in a rectangular plate shape that has a display surface  31  displaying images, a rear surface  39  opposite to the display surface, and four end faces  32 ,  33 ,  34 , and  35  continued from the display surface  31  and the rear surface  39 . A part of the periphery of the display surface  31  along the end face  32  is a peripheral portion  31   b , and a part of the periphery of the display surface  31  along the end face  33  is a peripheral portion  31   a.    
     As shown in  FIG. 1 , the end faces  32  and  33  opposite to each other are end faces that are continued from the shorter sides of the display surface  31 , and the end faces  34  and  35  opposite to each other are end faces that are continued from the longer sides of the display surface  31 . On the outer side of the end face  35  of the display panel  30 , a flexible substrate  36  connected to the liquid crystal panel is folded along the end face  35 . 
     The first bezel  10  shown in  FIG. 1  is a substantially rectangular plate-shaped member formed by stamping a metal such as aluminum or stainless steel, for example. A penetrating hole  18  is formed in the center of the first bezel  10 . In the present invention, it is not necessary to form the penetrating hole  18  in the first bezel  10 , but by forming the penetrating hole  18 , weight reduction and heat discharge effect can be achieved. 
     In the first bezel  10 , opposite end portions  12  and  13  are folded at a substantially right angle in advance so as to improve the efficiency in the attachment process of the first bezel. The first bezel  10  also has a notch  14  formed at a position that faces the flexible substrate  36  of the display panel  30  such that the flexible substrate  36  can be led out. 
     On the flat table in work space that is larger than the outer shape of the display panel  30 , the first bezel  10  is placed with the end portions  12  and  13  facing up. The display panel  30  is placed on the first bezel  10  such that the first bezel  10  covers at least part of the rear surface  39  of the display panel  30 . In this case, because it is possible to place the display panel  30  after aligning it to the first bezel  10  from above, the work accuracy in attaching the first bezel to the display panel  30  is unlikely to be reduced. 
       FIG. 2A  is an enlarged front view around the end portion  13  of the first bezel  10  after the display panel  30  is placed on the first bezel  10 . In the end portion  13 , a portion  131  that will face the boundary between the end face  33  and the display surface  31  to be covered by the first bezel when the first bezel  10  is attached to the display panel  30  is folded in advance at a substantially right angle. 
     As shown in  FIG. 2B , after placing the display panel  30  on the first bezel  10 , a part of the first bezel  10  around a portion  132  is folded along the bottom portion  331  of the end face  33  such that the first bezel  10  covers the end face  33  of the display panel  30 . A slit may be formed in advance in the inner surface or the outer surface of the portion  132  that faces the bottom portion  331  of the end face  33  so as to make it easier to fold the first bezel  10 . As shown in  FIG. 2B , in order to prevent light leakage and contamination at the end face  33 , the first bezel is formed in a shape that covers the peripheral portion  31   a  of the display surface  31  along the end face  33 . 
     It is preferable to fold the portion  132  at a right angle with a slight elastic deformation in the folding direction. This is because, when boxed-shaped second bezels  20  and  40 , which will be described later, are attached, an elastic recovery occurs at the portion  132  in the direction of the arrow X of  FIG. 2B , which brings a portion  133  of first bezel  10  into contact with an inner wall of each of the second bezels  20  and  40 , making it easier to hold them in place. 
     The structure at the end portion  13  of the first bezel  10  was described above, but the end portion  12 , located at the opposite side to the end portion  12  has a similar structure. 
     As described above, the first bezel is attached so as to cover at least a part of the rear surface  39  of the display panel  30 , the opposite end faces  32  and  33  of the display panel  30 , and the peripheral portions  31   a  and  31   b  of the display surface  31  along the opposite end faces  32  and  33 , and as shown in  FIG. 3 , the display panel  30  and the first bezel  10  are assembled. 
     After assembling the display panel  30  and the first bezel  10 , as shown in  FIG. 3 , box-shaped second bezels  20  and  40  are attached to the respective end faces  34  and  35  that are not covered by the first bezel  10  out of the end faces of the display panel  30 . A part of the periphery of the display surface  31  along the end face  35  is a peripheral portion  31   c , and a part of the periphery of the display surface  31  along the end face  34  is a peripheral portion  31   d . The length of the second bezels  20  and  40  in the lengthwise direction is substantially the same as that of the end faces  34  and  35  in the lengthwise direction. 
       FIG. 4A  is an enlarged perspective view of the second bezel  20  of  FIG. 3 . As shown in  FIG. 4A , the second bezel  20  is formed in a box shape that has an opening  22  that opens in one direction only. The edge of the opening  22  is formed in a rectangular frame shape. The second bezel  20  is formed by stamping a metal such as aluminum or stainless steel, for example. Alternatively, the second bezel  20  may be formed of a resin such as polycarbonate by injection-forming. 
     As shown in  FIG. 3 , the second bezel  20  is attached such that the opening  22  thereof encloses the end face  34  not covered by the first bezel  10  of the end faces of the display panel  30 , the peripheral portion  31   d  of the display surface  31  along the end face  34  not covered by the first bezel  10 , and side end portions  101  and  104  of the first bezel  10  that covers the end face  32  of the display panel  10 . 
       FIG. 4B  is an enlarged perspective view of the second bezel  40  of  FIG. 3 . As shown in  FIG. 4B , the second bezel  40  is formed in a box shape that has an opening  42  that opens in one direction only in a manner similar to the second bezel  20  of  FIG. 4A . However, the second bezel  40  differs from the second bezel  20  in that a notch  44  for leading out the flexible substrate  36  is provided. The notch  44  is formed in a position that faces the flexible substrate  36 . The second bezel  40  is obtained by forming a metal or a resin, similar to the second bezel  20 . 
     As shown in  FIG. 3 , the second bezel  40  is attached such that the opening  42  thereof encloses the end face  35  not covered by the first bezel  10  of the end faces of the display panel  30 , the peripheral portion  31   c  of the display surface  31  along the end face  35  not covered by the first bezel  10 , the flexible substrate  36  provided on the outer side of the end face  35 , and side end portions  102  and  103  of the first bezel  10  covering the end face  33  of the display panel  10 . 
       FIG. 5  is a perspective view of the liquid crystal display device  1  in which the second bezel  20  and the second bezel  40  are provided after attaching the first bezel  10  to the display panel  30 . In the liquid crystal display device  1 , the edges of the openings  22  and  42  of the second bezels  20  and  40  are formed in a rectangular frame shape, and therefore, the first bezel  10  and the second bezels  20  and  40  are engaged more strongly, thereby increasing the strength of the device. 
       FIG. 6  shows an end portion of a cross-sectional view along the portion  6 - 6  of  FIG. 5 . As shown in  FIG. 6 , the second bezel  40  is attached to the display panel  30  such that a connector  38  of the flexible substrate  36  can be connected to the outside through the notch  44 . 
     In the manner described above, the first bezel  10 , the second bezel  20 , and the second bezel  40  are attached to the display panel  30 . The liquid crystal display device  1  of the present embodiment is completed in this way. 
     In the descriptions above, the end faces  32  and  33  on the shorter sides of the display surface  31  in the display panel  30  are covered by the first bezel, and the end faces  34  and  35  on the longer sides thereof are covered by the second bezels, respectively. However, alternatively, it is possible switch the end faces on the shorter sides with the end faces on the longer sides, and the end faces  34  and  35  on the longer sides may be covered with the first bezel, and the end faces  32  and  33  on the shorter sides may be covered with the second bezels, respectively. 
     Embodiment 2 
     In Embodiment 2, an engaging structure is provided at a position where the first bezel  10  and the second bezel  20  or  40  are in contact with each other. Examples of the engaging structure include a structure in which tabs are engaged, a structure in which a tab and a hole are engaged, and the like.  FIG. 7A  is an exploded plan view for illustrating a display device according to Embodiment 2. The same reference characters are given to components and elements that are common with Embodiment 1 above, and duplicative descriptions are omitted. 
     As shown in  FIG. 7A , in the present embodiment, the first bezel  10  has a plurality of first tabs  17  formed on the back side of the portions thereof that face the end faces  32  and  33  of the display panel  30 . The second bezel  20  has second tabs  27  that are formed to engage with the first tabs  17  on the inner side walls  25  in the side end portions of the opening  22 . The second tabs  27  are formed in positions that face the first tabs  17 . Similarly, the second bezel  40  has second tabs  47  that are formed to engage with the first tabs  17  on the inner side walls  45  in the side end portions of the opening  42 . The second tabs  47  are formed in positions that face the first tabs  17 . 
       FIG. 8  is a partial enlarged view around the second tab  27  of the second bezel  20 . The second tab  47  of the second bezel  40  has the same shape as the second tab  27 .  FIG. 9A  is a partial enlarged view around the first tab  17  of the first bezel  10 . 
     In  FIG. 7A , by moving the second bezel  20  in the direction of the arrow Z 1 , the second bezel  20  is attached to the display panel  30  that has the first bezel  10  attached thereto. Also, by moving the second bezel  40  in the direction of the arrow Z 2 , the second bezel  40  is attached to the display panel  30  that has the first bezel  10  attached thereto. 
     In this manner, the first tabs  17  of the first bezel  10  and the second tabs  27  of the second bezel  20  are engaged with each other, and the first tabs  17  of the first bezel  10  and the second tabs  47  of the second bezel  40  are engaged with each other, thereby obtaining the state shown in  FIG. 7B . 
     In this case, the first bezel  10  and the second bezels  20  and  40  are fixed to each other by the engaging structures provided at four locations only, and therefore, as compared to the conventional configuration in which a plurality of tabs are provided to each side of the bezel, it is possible to reduce the number of tabs that need to be checked. As a result, the process time can be shortened, and the occurrence of overlooking erroneous engagement can be reduced. 
     Also, as described above, it is preferable to fold the portion  132  (shown in  FIG. 2 ) in the end portion  13  of the first bezel  10  at approximately a right angle with a slight elastic deformation in the folding direction. As shown in  FIG. 7B , when the second bezels  20  and  40  are attached, elastic recovery occurs at the portion  132  in the direction of the arrow X 1  of  FIG. 7B , and therefore, it makes it easier for the tabs  17  of the first bezel  10  and the tabs  27  and  47  of the second bezels  20  and  40  to engage with each other. As a result, it is possible to provide a margin in the processing accuracy of each tab. Similarly, in the end portion  12  of the first bezel, it is preferable to fold a portion of the first bezel  10  such that elastic recovery occurs in the direction of the arrow X 2 , thereby making it easier for the tabs  17  of the first bezel  10  and the tabs  27  and  47  of the second bezel  20  and  40  to engage with each other. 
     In the manner described above, the first bezel  10 , the second bezel  20 , and the second bezel  40  are attached to the display panel  30 . The liquid crystal display device  1  of the present embodiment is completed in this way. 
     As shown in  FIG. 9B , a hole  19  may be formed instead of the first tab  17  of the first bezel  10 . By having the second tab  27  of the second bezel  20  and the second tab  47  of the second bezel  40  engage with the holes  19  of the first bezel  10 , it is possible to make a gap between the first bezel  10  and the second bezel  20  or between the first bezel  10  and the second bezel  40  smaller as compared with the case in which the first tabs  17  are provided. This makes it possible to hold the first bezel and the second bezel more securely. 
       FIGS. 7A and 7B  above showed the configuration in which the first tabs  17  are provided at four locations in the first bezel  10 , and the second tabs  27  and  47  are provided in the second bezels  20  and  40  at respective positions that face the first tabs  17 , but the position and the number of each tab can be appropriately set. For example, one or two or more pairs of the first tabs and the second tabs may be provided on each surface where the first bezel  10  and the second bezel  20  or  40  make contact with each other. This makes it possible to fix the first bezel  10  and the second bezels  20  and  40  to each other more securely. 
     Embodiment 3 
     In Embodiment 3, the display device having the first bezel and the second bezel attached thereto is further provided with third bezels.  FIG. 10A  is an exploded perspective view illustrating a display device of Embodiment 3. The same reference characters are given to components and elements that are common with Embodiment 1 above, and duplicative descriptions are omitted. 
     As shown in  FIG. 10A , a third bezel  80   a  is formed in a box shape that has an opening  82   a  that opens in one direction only, in a manner similar to the second bezels  20  and  40 . The length of the third bezel  80   a  in the lengthwise direction is substantially the same as that of the end faces  32  and  33  of the display panel  30  in the lengthwise direction. 
     As shown in  FIG. 10A , the third bezel  80   a  is attached such that the opening  82   a  thereof encloses an end face  108  of the first bezel  10  covering the end face  32 , the end portion  12  of the first bezel  10  covering the peripheral portion  31   b  of the display surface  31  along the end face  32 , and end portions  201  and  202  of the second bezels  20  and  40  in the lengthwise direction. 
     Similarly, the other third bezel  80   b , which is opposite to the third bezel  80   a , is attached such that the opening  82   b  thereof encloses an end face  109  of the first bezel  10  covering the end face  33 , the end portion  13  of the first bezel  10  covering the peripheral portion  31   a  of the display surface  31  along the end face  33 , and end portions  204  and  203  of the second bezels  20  and  40  in the lengthwise direction. 
       FIG. 10B  is a perspective view of the liquid crystal display device  1  in which the two third bezels  80   a  and  80   b  are respectively attached to the display panel  30  having the first bezel  10  (not shown) and the second bezels  20  and  40  attached thereto. 
     In the manner described above, the first bezel  10 , the second bezel  20 , the second bezel  40 , the third bezel  80   a , and the third bezel  80   b  are attached to the display panel  30 . The liquid crystal display device  1  of the present embodiment is completed in this way. 
     The liquid crystal display device  1  of the present embodiment may also be provided with the engaging structure described in Embodiment 2 above. For example, an engaging structure using tabs or holes may be provided at each position where the third bezel  80   a  or the third bezel  80   b  makes contact with each of the first bezel  10 , the second bezel  20 , and the second bezel  40 . This makes it possible to fix the third bezel  80   a  or the third bezel  80   b  to each of the first bezel  10 , the second bezel  20 , and the second bezel  40  more securely. 
     INDUSTRIAL APPLICABILITY 
     There is no special limitation on the applicability of the present invention, and the present invention can be used for any display device having a display panel in a rectangular plate shape. 
     DESCRIPTION OF REFERENCE CHARACTERS 
     
         
         
           
               1  liquid crystal display device (display device) 
               10  first bezel 
               12 ,  13  end portions of the first bezel that covers peripheral portions of a display surface along the opposite end faces 
               17 ,  27 ,  47  engaging structure (tab) for fixing the first bezel and second bezel 
               20  second bezel 
               22  opening of the second bezel  20   
               30  display panel 
               31  display surface 
               31   a ,  31   b ,  31   c ,  31   d  peripheral portion of the display surface 
               32 ,  33 ,  34 ,  35  four end faces continued from display surface and rear surface 
               32 ,  33  opposite end faces of the display panel 
               34 ,  35  end faces not covered by the first bezel 
               39  rear surface opposite to the display surface 
               40  second bezel 
               42  opening of the second bezel  40   
               80   a ,  80   b  third bezel 
               82   a ,  82   b  opening of the third bezel 
               101 ,  102 ,  103 ,  104  side end portion of the first bezel 
               108 ,  109  end face of the first bezel 
               201 ,  202 ,  203 ,  204  end portion of the second bezel in the lengthwise direction