JP4019381B2 - Liquid crystal television and liquid crystal display device - Google Patents

Description

  The present invention relates to a liquid crystal television and a liquid crystal display device, and more particularly to a liquid crystal television or a liquid crystal display device including a metal chassis to which a wiring board for a liquid crystal television or a liquid crystal display device is attached.

  Conventionally, various structures in which a liquid crystal display panel and a light source for backlight are unitized have been proposed (see, for example, Patent Documents 1 to 4).

  In Patent Document 1, a display panel including a liquid crystal cell and polarizing plates disposed on the front side and the back side of the liquid crystal cell, and a metal bezel cover (metal frame) disposed on the front side of the display panel. In addition, a flat display device is disclosed that includes a backlight disposed on the back side of the display panel and a chassis disposed on the back side of the backlight. In the flat display device disclosed in Patent Document 1, a protrusion is integrally provided outside the polarizing plate, and the protrusion of the polarizing plate, the bezel cover, and the resin frame that supports the backlight are screwed to the chassis. Thus, the display panel is securely fixed.

  Patent Document 2 discloses a light guide unit (backlight unit), a resin frame for fixing the light guide unit, a metal plate attached to the surface side of the resin frame with screws, and a metal plate. A liquid crystal panel (display panel) placed on the surface, a metal frame that is provided so as to cover from the surface side of the liquid crystal panel, and is fixed to the locking claws of the resin frame, and screwed to the back side of the resin frame A structure of a liquid crystal module composed of a metal back plate is disclosed. In the liquid crystal module disclosed in Patent Document 2, a panel guide rib formed so as to protrude from the resin frame to the surface side is inserted into a hole of a metal plate, and the position of the liquid crystal panel is regulated by the panel guide rib. Yes.

  Further, in Patent Document 3, a metal fitting screwed to a substrate for driving a liquid crystal panel (display panel) is provided through a hole in a resin case disposed between the liquid crystal panel and the substrate. In addition, there is disclosed a liquid crystal panel conductive connection structure capable of grounding a metal shell by bringing it into contact with a metal shell (metal frame) attached to the liquid crystal panel.

  Patent Document 4 discloses a liquid crystal display device in which a liquid crystal panel unit and a backlight unit are disposed between a metal casing and a mask frame (metal frame). In the liquid crystal display device disclosed in Patent Document 4, ribs are provided at the four corners of the light guide plate for guiding the light of the lamp of the backlight unit to the liquid crystal panel unit, and by holding the liquid crystal panel unit on the ribs, The LCD panel unit is fixed.

  FIG. 6 is a perspective view showing an entire configuration of a liquid crystal television according to a conventional example. 7 to 10 are diagrams for explaining the detailed structure of the conventional liquid crystal television shown in FIG. The structure of the conventional liquid crystal television 100 will be described with reference to FIGS.

As shown in FIG. 6, the liquid crystal television 100 according to the conventional example includes a housing 110, a stand 120 that supports the housing 110, and a liquid crystal display unit 130 that is housed in the housing 110. . 7 and 9, the liquid crystal display unit 130, the TV wiring board 140 for the liquid crystal television 100, and the TV wiring board 140 are arranged on the back surface. Attached metal chassis 150
And are arranged.

  In addition, the liquid crystal display unit 130 includes a metal surface-side frame 131 disposed on the front surface side, a display panel 132 having a display area 160 on which images such as characters and images are displayed, and a metal disposed on the back side. And a back frame 133 made of metal.

  Further, as shown in FIG. 8, the metal surface side frame 131 includes a surface portion 131a having an opening 131b in which a portion corresponding to the display area 160 (see FIGS. 6 and 7) of the display panel 132 is opened. And four side portions 131c. In addition, two screw insertion holes 131d into which the screws 161 are inserted are formed in two opposing side surface portions 131c, respectively. In addition, a display panel 132 in which liquid crystal (not shown) is enclosed is disposed inside the front side frame 131.

  Moreover, the metal back side frame 133 has a bottom surface portion 133a and four side surface portions 133b. The bottom surface portion 133 a is provided with a screw hole 133 c for attaching the metal chassis 150 with screws 162. The side surface 133b is provided with a screw hole 133d at a position corresponding to the screw insertion hole 131d of the side surface 131c of the front surface side frame 131.

  Further, as shown in FIGS. 8 and 10, a reflection sheet 134 is disposed on the front surface side of the back frame 133. Further, a cathode tube 135 functioning as a light source is disposed on the surface side of the reflection sheet 134. The cathode tube 135 is disposed so as to emit light toward the display panel 132. A resin frame 136 is disposed on the surface side of the cathode tube 135. The resin frame 136 is formed in a frame shape by side portions 136a and 136b. Further, a concave support portion 136c for supporting the cathode tube 135 is provided at the lower end of the side surface portion 136a.

  A diffusion plate 137 is provided on the surface side of the cathode tube 135. The diffusion plate 137 has a function of uniformly diffusing light emitted from the cathode tube 135 toward the surface side toward the display region 160 (see FIGS. 6 and 7) of the display panel 132. Further, a diffusion sheet 138 and a prism sheet 139 are arranged on the front surface side of the diffusion plate 137 from the back side. The diffusion sheet 138 has a function of transmitting and diffusing light traveling toward the display panel 132. The prism sheet 139 has a function of transmitting and condensing light traveling toward the display panel 132. As shown in FIG. 10, the display panel 132, the diffusion plate 137, the diffusion sheet 138, and the prism sheet 139 are accommodated in a resin frame 136 formed in a frame shape.

As shown in FIG. 8, the television wiring board 140 is provided with a screw insertion hole 140 a for attaching the television wiring board 140 to the back surface of the metal chassis 150 with screws 163. In addition, screw holes 150 a are formed in the metal chassis 150 at positions corresponding to the screw insertion holes 140 a of the television wiring board 140. Further, the metal chassis 150 is provided with a screw insertion hole 150b at a position corresponding to the screw hole 133c of the bottom surface portion 133a of the metal back frame 133.
JP 2002-341318 A JP 2000-258756 A JP 2003-15150 A JP-A-11-102160

  In the conventional liquid crystal television 100 shown in FIGS. 6 to 10, the rear-side frame 133 of the liquid crystal display unit 130 in which the display panel 132 and the cathode tube 135 are unitized is used as a television wiring board for the liquid crystal television 100. Since the four screws 162 are used to attach the metal chassis 150 to which the 140 is attached, the metal chassis 150 and the rear frame 133 of the liquid crystal display unit 130 are separately required, and the four are provided. The screw 162 is also inconvenient. Therefore, there has been a problem that the number of parts increases. In the conventional liquid crystal television 100 shown in FIGS. 6 to 10, the resin frame 136 is not fixed to either the metal front side frame 131 or the rear side frame 133, so that an impact is applied. In addition, there is a problem in that the display panel 132 and the cathode tube 135 housed in the resin frame 136 may move together with the resin frame 136 and be damaged.

  Further, in the flat display device disclosed in the above-mentioned Patent Document 1, although not specified, when the chassis arranged on the back side of the backlight is formed of resin, it is arranged on the surface side of the display panel. Even if the metal bezel cover is attached to the chassis with screws, there is a problem that it is difficult to ground the bezel cover.

  Further, in the liquid crystal module disclosed in the above-mentioned Patent Document 2, although not specified, when the liquid crystal module is mounted inside the device, a back plate screwed to the back side of the liquid crystal module is placed on the device side. Since it is necessary to attach to the provided chassis, there is a disadvantage that a chassis provided on the apparatus side, a back plate of the liquid crystal module, and screws for attaching the back plate to the chassis are required. As a result, there is a problem that the number of parts increases. In this case, the metal frame provided so as to cover the liquid crystal panel and the chassis on the apparatus side are not electrically connected, so that there is a problem that it is difficult to ground the metal frame.

  Further, in the liquid crystal panel conductive connection structure disclosed in Patent Document 3, it is necessary to separately provide a metal fitting for grounding a metal outer portion (metal frame) attached to the liquid crystal panel. There is a problem that the number of parts increases.

  Further, in the liquid crystal display device disclosed in Patent Document 4, when a shock is applied to the liquid crystal display, the liquid crystal panel unit that is not fixed to either the metal casing or the mask frame is made of the metal casing. There is a problem that the liquid crystal panel unit may be damaged by contact with the body or the mask frame.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to reduce the number of components and to ground a metal frame for fixing a display panel. And it is providing the liquid crystal television and liquid crystal display device which can suppress that a display panel breaks.

In order to achieve the above object, a liquid crystal television according to a first aspect of the present invention is provided with a display panel, a backlight light source disposed on the back side of the display panel, and a display panel. A metal frame for fixing the panel, a resin frame arranged on the back side of the metal frame and supporting the light source for the backlight, and arranged on the back side of the resin frame, on the back side for liquid crystal television In a liquid crystal television including a metal chassis to which a wiring board is attached, the metal chassis has a box shape including a bottom surface and side surfaces provided so as to extend substantially vertically from four sides of the bottom surface. And a bent portion that is bent outward from the side surface. The metal chassis is arranged so as to support the backlight light source from the back side, and the resin frame is provided with an edge protruding in the outer direction. The frame has a protruding part that protrudes outward, and the protruding part of the metal frame and the bent part of the metal chassis are fixed with metal screws so as to sandwich the edge of the resin frame Has been.

In order to achieve the above object, a liquid crystal television according to a first aspect of the present invention is provided with a display panel, a backlight light source disposed on the back side of the display panel, and a display panel. A metal frame for fixing the panel, a resin frame arranged on the back side of the metal frame and supporting the light source for the backlight, and arranged on the back side of the resin frame, on the back side for liquid crystal television In a liquid crystal television including a metal chassis to which a wiring board is attached, the metal chassis has a box shape including a bottom surface and side surfaces provided so as to extend substantially vertically from four sides of the bottom surface. And a bent portion that is bent outward from the side surface. Together are arranged on the side of the area, metal chassis are arranged to support the light source for backlight from the rear side, the resin frame has a first side surface portion formed in a frame shape, a first side surface parts and have an edge portion which projects outwardly is provided from the edge is formed with a boss having a screw insertion hole, the metal frame, a portion corresponding to the display panel is opened surface , A second side surface portion that extends substantially vertically from the surface portion, and a protruding portion that protrudes outward from the second side surface portion, a protruding portion of the metal frame, and a metal chassis The bent part is fixed with a metal screw so as to sandwich the boss formed at the edge of the resin frame, and the protruding part and the bent part are fixed with the screw so as to sandwich the boss. The first side of the frame And the bottom surface of the over sheet, and is fixed to the insertion direction of the screw by the lower surface of the surface portion of the metal frame.

  In the first aspect, the metal chassis is formed to have a box shape including a bottom surface and side surfaces provided so as to extend in the vertical direction from the four sides of the bottom surface, thereby mechanically Strength can be improved. Also, the metal chassis formed in a box shape by fixing the protruding part of the metal frame and the bent part of the metal chassis with metal screws so as to sandwich the edge of the resin frame Even in the state where the resin frame is disposed inside the resin frame, the resin frame can be easily fixed by the metal chassis and the metal frame. In addition, the backlight light source is arranged in the area on the back side of the display panel corresponding to the display area of the display panel, and the metal chassis is arranged so as to support the backlight light source from the back side. Even if the backlight light source is arranged on the back side of the display panel corresponding to the display area of the display panel, the backlight source is supported from the back side by a metal chassis. Can do.

  A liquid crystal display device according to a second aspect of the present invention includes a display panel, a backlight light source disposed on the back side of the display panel, and a metal which is disposed on the surface side of the display panel and fixes the display panel. The frame is disposed on the back side of the metal frame, and is disposed on the back side of the resin frame so as to face the metal frame with the resin frame sandwiched between the resin frame for supporting the display panel and the backlight light source. A metal chassis to which a wiring board for a liquid crystal display device is attached is provided on the back surface, and the metal frame and the metal chassis are fixed by metal screws so as to sandwich the resin frame.

A liquid crystal display device according to a second aspect of the present invention includes a display panel, a backlight light source disposed on the back side of the display panel, and a metal which is disposed on the surface side of the display panel and fixes the display panel. The frame is disposed on the back side of the metal frame, and is disposed on the back side of the resin frame so as to face the metal frame with the resin frame sandwiched between the resin frame for supporting the display panel and the backlight light source. A metal chassis to which a wiring board for a liquid crystal display device is attached on the back surface, the metal chassis including a bottom surface and side surfaces provided so as to extend substantially vertically from four sides of the bottom surface. It has a box shape and includes a bent portion bent outward from the side surface. The resin frame has a first side surface formed in a frame shape and a first side surface portion. And a boss having a screw insertion hole is formed on the edge, and the metal frame has a surface portion in which a portion corresponding to the display panel is opened. A second side surface portion extending in a substantially vertical direction from the surface portion, and a projecting portion projecting outward from the second side surface portion, and the projecting portion of the metal frame and the bent portion of the chassis are: The first side surface of the resin frame is fixed with a metal screw so as to sandwich the boss formed at the edge of the resin frame, and the protruding portion and the bent portion are fixed with the screw so as to sandwich the boss. The portion is fixed in the screw insertion direction by the bottom surface of the chassis and the lower surface of the surface portion of the metal frame .

In the liquid crystal display device according to the second aspect, as described above, the liquid crystal display device is fixed so that the resin frame is sandwiched between the metal chassis to which the wiring substrate for the liquid crystal display device is attached and the metal frame. A resin frame and a metal frame can be attached to a metal chassis to which a wiring board for a display device is attached. As a result, compared to the case where the display panel and the light source for the backlight are attached to the metal chassis to which the wiring board for the liquid crystal display device is attached, with the front side and the rear side of the light source for the display panel being sandwiched by the metal frame, respectively. Since the back side metal frame and the plurality of screws for attaching the back side metal frame to the metal chassis are not required, the number of parts can be reduced. Further, in this case, the work of attaching the metal frame on the back side to the metal chassis with a plurality of screws is not required, so that the number of assembling steps of the liquid crystal display device can be reduced correspondingly. Further, the resin frame can be reinforced by fixing the metal frame and the metal chassis with screws so as to sandwich the resin frame. Accordingly, even when an impact is applied to the liquid crystal display device, the resin frame can be prevented from being deformed even when the resin frame is warped or bent, so that the resin frame is prevented from being damaged. Can do. As a result, the display panel supported by the resin frame and the backlight light source can be prevented from being damaged. Also, by fixing the metal frame and the metal chassis with metal screws, the metal frame and the metal chassis can be electrically connected, so that the display panel can be fixed. The metal frame can be grounded. As a result, the metal frame can be grounded by the metal screw for attaching the metal frame to the metal chassis, so that the metal frame can be grounded without increasing the number of parts. it can. Further, the metal chassis has a box shape including a bottom surface and side surfaces provided so as to extend substantially vertically from four sides of the bottom surface. If comprised in this way, the mechanical strength of a chassis can be improved. Further, the metal chassis includes a bent portion that is bent outward from the side surface of the metal chassis, and the resin frame is provided with an edge so as to protrude in the outer direction. Protrusions projecting outward are provided, and the projecting part of the metal frame and the bent part of the chassis sandwich the edge of the resin frame.
It is fixed with metal screws. If comprised in this way, even if it is in the state which has arrange | positioned the resin frame inside the metal chassis formed in the box shape, the resin frame is easily fixed by the metal chassis and the metal frame. be able to.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the overall configuration of a liquid crystal television according to an embodiment of the present invention. 2 to 5 are diagrams for explaining the detailed structure of the liquid crystal television according to the embodiment of the present invention shown in FIG. With reference to FIGS. 1-5, the structure of the liquid crystal television 1 by one Embodiment of this invention is demonstrated.

As shown in FIG. 1, the liquid crystal television 1 according to an embodiment of the present invention includes a housing 10, a stand 20 that supports the housing 10, and a liquid crystal display unit 30 that is housed in the housing 10. I have. Further, as shown in FIGS. 2 to 4, the liquid crystal television 1 includes a liquid crystal display unit 30, a television wiring board 40 for the liquid crystal television 1, and a panel for a display panel 32 to be described later. A wiring board 50 (see FIG. 3) and a metal chassis 60 to which the TV wiring board 40 is attached on the back surface are arranged.

  As shown in FIGS. 2 and 4, the liquid crystal display unit 30 includes a metal surface-side frame 31 disposed on the surface side, and a display panel 70 having a display area 70 on which images such as characters and images are displayed. 32 and a metal chassis 60 disposed on the back side. That is, in this embodiment, the metal chassis 60 to which the television wiring board 40 for the liquid crystal television 1 is attached supports the display panel 32 and the like as members constituting the liquid crystal display unit 30 from the back side. .

  As shown in FIG. 3, the metal surface side frame 31 includes a surface portion 31 a having an opening 31 b in which a portion corresponding to the display area 70 (see FIGS. 1 and 2) of the display panel 32 is opened. And four side portions 31c. The front side frame 31 is an example of the “metal frame” in the present invention.

  Here, in this embodiment, the metal surface side frame 31 is formed with a plurality (eight) protruding portions 31d protruding outward from the three side surface portions 31c. Each protrusion 31d is formed with a screw insertion hole 31e into which the screw 71 is inserted.

  Further, as shown in FIGS. 3 and 5, a display panel 32 in which liquid crystal (not shown) is enclosed is disposed on the back side of the front side frame 31. A reflective sheet 33 is disposed on the surface side of the metal chassis 60. A cathode tube 34 that functions as a light source is disposed on the surface side of the reflection sheet 33. The cathode tube 34 is disposed at a lower position corresponding to the display area 70 (see FIGS. 1 and 2) of the display panel 32 so as to irradiate light toward the display area 70 of the display panel 32. The cathode tube 34 is an example of the “backlight light source” in the present invention.

  A resin frame 35 is disposed on the surface side of the cathode tube 34. The resin frame 35 is formed in a frame shape by the side surface portions 35a and 35b. A concave support portion 35c for supporting the cathode tube 34 is provided at the lower end of the side surface portion 35a.

  In the present embodiment, the resin frame 35 is provided with an edge portion 35d that protrudes outward from the side surface portions 35a and 35b. A boss portion 35e is provided on the edge portion 35d at a position corresponding to the protruding portion 31d of the front side frame 31. Each boss portion 35e is provided with a screw insertion hole 35f. Further, the outermost peripheral portion of the edge portion 35d is formed in a rib shape extending substantially perpendicularly to the surface side of the display panel 32 with respect to the surface of the edge portion 35d. Thereby, the mechanical strength of the edge 35d is improved.

  A diffusion plate 36 is provided on the surface side of the cathode tube 34. The diffusion plate 36 has a function of uniformly diffusing light irradiated from the cathode tube 34 toward the surface side toward the display area 70 (see FIGS. 1 and 2) of the display panel 32. A diffusion sheet 37 and a prism sheet 38 are disposed on the front surface side of the diffusion plate 36 from the back side. The diffusion sheet 37 has a function of transmitting and diffusing light traveling toward the display panel 32. The prism sheet 38 has a function of transmitting and condensing light traveling toward the display panel 32. As shown in FIG. 5, the display panel 32, the diffusion plate 36, the diffusion sheet 37, and the prism sheet 38 are arranged inside a resin frame 35 that is formed in a frame shape.

  As shown in FIG. 3, the television wiring board 40 is provided with a screw insertion hole 40 a for attaching the television wiring board 40 to the back surface of the metal chassis 60 with screws 72. The panel wiring board 50 is attached to a metal chassis 60.

  Here, in this embodiment, as shown in FIG. 3, the metal chassis 60 includes a bottom surface portion 60a and a side surface portion 60b formed so as to extend in the vertical direction from the four sides of the bottom surface portion 60a. Yes. The metal chassis 60 has a box shape with a bottom surface portion 60a and a side surface portion 60b. Thereby, the mechanical strength of the metal chassis 60 can be improved. The metal chassis 60 includes a bent portion 60c that is bent outward from the side surface portion 60b. The bent portion 60c has a screw hole 60d at a position corresponding to a screw insertion hole 31e provided in the protruding portion 31d of the front side frame 31 and a screw insertion hole 35f formed in the boss portion 35e of the resin frame 35. Is provided. As a result, as shown in FIGS. 2 and 4, the protruding portion 31 d of the metal surface-side frame 31 and the bent portion 60 c of the metal chassis 60 are arranged so as to sandwich the edge portion 35 d of the resin frame 35. It is fixed with screws 71 made of.

  Further, a screw hole 60e is provided on the bottom surface portion 60a of the metal chassis 60 at a position corresponding to the screw insertion hole 40a of the television wiring board 40.

  In the present embodiment, as described above, the resin frame 35 is sandwiched between the metal chassis 60 to which the television wiring board 40 for the liquid crystal television 1 is attached and the metal surface side frame 31. Thus, the resin frame 35 and the front-side frame 31 can be attached to the metal chassis 60 to which the television wiring board 40 for the liquid crystal television 1 is attached. As a result, as in the conventional liquid crystal television 100 shown in FIGS. 6 to 10, the display panel 132 and the cathode tube 135 are accommodated by the front side frame 131 and the back side frame 133 and unitized. The rear frame 133 and the screws 162 for attaching the rear frame 133 to the metal chassis 150 are not necessary as compared to the case of attaching to the metal chassis 150 to which the television wiring board 140 for John 100 is attached. As a result, the number of parts can be reduced. Further, in this case, the work of attaching the back frame 133 to the metal chassis 150 with the screws 162 becomes unnecessary, so that the number of assembling steps for the liquid crystal television 1 can be reduced accordingly.

  In the present embodiment, the resin frame 35 can be reinforced by fixing the metal surface side frame 31 and the metal chassis 60 with the screws 71 so as to sandwich the resin frame 35 therebetween. Thereby, even when an impact is applied to the liquid crystal television 1 and the resin frame 35 is about to bend or bend, the resin frame 35 can be prevented from being deformed, and therefore the resin frame 35 is damaged. Can be suppressed. As a result, the display panel 32 and the cathode tube 34 fixed to the resin frame 35 can be prevented from being damaged.

  In the present embodiment, the metal surface side frame 31 and the metal chassis 60 are fixed by the metal screws 71 to electrically connect the metal surface side frame 31 and the metal chassis 60 to each other. Therefore, the surface side frame 31 for fixing the display panel 32 can be grounded. Thereby, since the surface side frame 31 can be grounded by the metal screw 71 for attaching the resin frame 35 and the surface side frame 31 to the metal chassis 60, the surface side can be increased without increasing the number of parts. The side frame 31 can be grounded.

  In the present embodiment, the protruding portion 31d of the front frame 31 and the bent portion 60c of the metal chassis 60 are fixed by the metal screw 71 so as to sandwich the edge portion 35d of the resin frame 35. Even when the resin frame 35 is disposed inside the box-shaped metal chassis 60, the resin frame 35 can be easily fixed by the metal chassis 60 and the front-side frame 31. Can do.

  Further, in the present embodiment, the cathode tube 34 is disposed in a region on the back side of the display panel 32 corresponding to the display region 70 of the display panel 32 and the metal chassis 60 is supported from the back side. Thus, even if it is a direct type backlight structure in which the cathode tube 34 is arranged on the back side of the display panel 32 corresponding to the display area 70 of the display panel 32, the cathode 60 is made by the metal chassis 60. The tube 34 can be supported from the back side.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and all modifications within the meaning and scope equivalent to the scope of claims for patent are included.

  For example, in the above-described embodiment, an example in which a metal chassis is formed in a box shape is shown. However, the present invention is not limited to this, and the metal chassis is not formed in a box shape but is formed in a flat plate shape. Good.

  In the above-described embodiment, the direct-type backlight structure in which the cathode tube (light source for backlight) is arranged in the area on the back side of the display panel corresponding to the display area of the display panel has been described. Not limited to this, the present invention can also be applied to a backlight structure that guides light using a light guide plate.

1 is a perspective view showing an overall configuration of a liquid crystal television according to an embodiment of the present invention. FIG. 2 is a perspective view of a liquid crystal display unit, chassis, and television wiring board of the liquid crystal television according to the embodiment of the present invention shown in FIG. 1. FIG. 2 is an exploded perspective view of the liquid crystal display unit, chassis, and television wiring board of the liquid crystal television according to the embodiment of the present invention shown in FIG. 1. FIG. 2 is an exploded perspective view of the liquid crystal display unit, chassis, and television wiring board of the liquid crystal television according to the embodiment of the present invention shown in FIG. 1. It is sectional drawing along the 200-200 line | wire of FIG. It is the perspective view which showed the whole structure of the liquid crystal television by an example of the past. FIG. 7 is a perspective view of the liquid crystal display unit, chassis, and television wiring board of the conventional liquid crystal television shown in FIG. 6. It is a disassembled perspective view of the liquid crystal display unit of the conventional liquid crystal television shown in FIG. 6, a chassis, and the wiring board for televisions. It is a disassembled perspective view of the liquid crystal display unit of the conventional liquid crystal television shown in FIG. 6, a chassis, and the wiring board for televisions. FIG. 10 is a cross-sectional view taken along line 300-300 in FIG. 9.

Explanation of symbols

1 LCD television 31 Front side frame (metal frame)
31d Projection 32 Display panel 34 Cathode tube (light source for backlight)
35 resin frame 35d edge 40 TV wiring board 60 chassis 60a bottom surface portion 60b side surface portion 60c bent portion 70 display area 71 screw

Claims (3)

A display panel; a backlight light source disposed on a back side of the display panel; a metal frame disposed on a surface side of the display panel for fixing the display panel; and a back side of the metal frame And a resin frame for supporting the light source for backlight, and a metal chassis disposed on the back side of the resin frame and having a wiring board for a liquid crystal television attached to the back side In John
The metal chassis has a box shape including a bottom surface and a side surface provided so as to extend substantially vertically from four sides of the bottom surface, and a bent portion that is bent outward from the side surface. Including
The backlight light source is disposed in a region on the back side of the display panel corresponding to the display region of the display panel, and the metal chassis supports the backlight light source from the back side. Arranged,
The resin frame has a first side surface portion formed in a frame shape, and is an edge portion projecting outward is provided from said first side portion,
A boss having a screw insertion hole is formed on the edge,
The metal frame has a surface portion where a portion corresponding to the display panel is opened, a second side surface portion extending in a substantially vertical direction from the surface portion, and an outer side protruding from the second side surface portion . A protrusion is provided,
The protruding portion of the metal frame and the bent portion of the metal chassis are fixed by metal screws so as to sandwich a boss formed at an edge of the resin frame ,
In a state where the projecting portion and the bent portion are fixed by the screws so as to sandwich the boss, the first side surface portion of the resin frame includes a bottom surface of the chassis and a lower surface of the surface portion of the metal frame. A liquid crystal television fixed in the screw insertion direction . A display panel;
A light source for backlight disposed on the back side of the display panel;
A metal frame disposed on the surface side of the display panel for fixing the display panel;
A resin frame disposed on the back side of the metal frame for supporting the display panel and the backlight light source;
A metal chassis that is disposed on the back side of the resin frame so as to face the metal frame across the resin frame, and a wiring board for a liquid crystal display device is attached to the back surface;
The metal chassis extends substantially vertically from a bottom surface and four sides of the bottom surface.
And a bent portion that is bent outward from the side surface.
The resin frame is provided with a first side surface portion formed in a frame shape and an edge portion protruding outward from the first side surface portion,
A boss having a screw insertion hole is formed on the edge,
The metal frame has a surface portion where a portion corresponding to the display panel is opened, a second side surface portion extending in a substantially vertical direction from the surface portion, and an outer side protruding from the second side surface portion. A protrusion is provided,
The protruding portion of the metal frame and the bent portion of the chassis are fixed by metal screws so as to sandwich a boss formed at an edge of the resin frame,
In a state where the projecting portion and the bent portion are fixed by the screws so as to sandwich the boss, the first side surface portion of the resin frame includes a bottom surface of the chassis and a lower surface of the surface portion of the metal frame. The liquid crystal display device fixed in the insertion direction of the screw by . The backlight light source is disposed in a region on the back side of the display panel corresponding to the display region of the display panel,
The liquid crystal display device according to claim 2, wherein the metal chassis is arranged to support the backlight light source from the back side.

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