JP2006235425A - Thin display device and assembling method for thin display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a thin display device and a liquid crystal display device lightweight and thin. <P>SOLUTION: The liquid crystal display device in such a structure that the front and rear of a liquid crystal panel and a back light device disposed behind it are clamped and held by front and rear cabinets formed of moldings is equipped with a frame-shaped liquid crystal panel front abutting portion which is formed in one body at an inner peripheral portion of an opening portion corresponding to the liquid crystal panel of the front cabinet and abuts against the front of an outer peripheral edge of the liquid crystal panel across a buffer member and a liquid crystal panel rear abutting portion which is fastened and supported on the front cabinet on an outer peripheral side of the liquid crystal panel front abutting portion and abuts against the rear of the outer peripheral edge of the liquid crystal panel across a buffer member. A fitting flange is projected at the outer periphery of the back light device and fastened to the front cabinet together with the liquid crystal panel rear abutting part one over the other to support the liquid crystal panel and back light device by the front cabinet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

    The present invention relates to a thin display device, a liquid crystal display device, and a method for assembling a liquid crystal display device, and more specifically, a display panel such as a liquid crystal panel disposed on the front surface of a backlight device without using a bezel that is a dedicated holding member. The present invention relates to a thin display device, a liquid crystal display device, and a method for assembling a liquid crystal display device, which are further reduced in thickness and weight and shortened in an assembly process by being directly pressed and held by a front cabinet.

2. Description of the Related Art Conventionally, a liquid crystal display device such as a liquid crystal television has a frame-shaped panel holder assembled to a casing portion on the outer periphery of a backlight device, and the outer peripheral portion of the liquid crystal panel is overlapped on the front surface of the panel holder. It was covered with a frame-shaped bezel shaped like a letter, and the bezel was supported by the front cabinet. As a liquid crystal display device configured to hold the outer periphery of the liquid crystal panel with a bezel and support the outside with a cabinet, there is a “liquid crystal display device” described in Patent Document 1.
Japanese Patent Laid-Open No. 06-222335

  By the way, in the liquid crystal television, as the screen size increases, the weight of the main body is required. Increasing the screen and reducing the weight of the main body are contradictory. When the screen is enlarged, the main body that supports it becomes structurally robust and increases its weight in order to support the larger screen. Become. Therefore, even if the screen is enlarged, it has been a big problem to reduce the weight of the main body. In view of the above, an object of the present invention is to propose a thin display device and a liquid crystal display device in which the main body can be reduced in weight and thickness even when the screen is enlarged.

  In order to solve the above-described problems, a thin display device according to the present invention is a thin display device having a structure in which a device main body is sandwiched and held by a front and rear cabinet made of a molded product, and an edge of the display panel is attached to the display panel. The front cabinet having the corresponding opening and the display panel rear surface abutting body are held and held by a buffer member. Here, it is preferable that a portion of the front cabinet that is indirectly pressed through at least the buffer member has a honeycomb structure or other cell structure by projecting a hexagonal rib continuous on the back side. Further, the outer side of the front side buffer member and the rear side buffer member may be continuously integrated to form a U-shaped cross section.

  The thin display device according to the present invention is a thin display device having a structure in which a display panel, a backlight device positioned behind the display panel, a drive circuit unit of the display device, and the like are sandwiched and held by a front and rear cabinet made of a molded product. The edge of the display panel is sandwiched and held by the front cabinet having an opening corresponding to the display panel and the display panel rear surface abutting body via a buffer member. Here, a mounting flange is projected on the outer periphery of the backlight device, and the mounting flange is overlapped with the display panel rear surface contact portion and fastened to the front cabinet, and the display panel and the backlight device are supported by the front cabinet. Is possible. In addition, it is preferable that a portion of the front cabinet that is pressed indirectly through at least the buffer member is provided with a honeycomb structure or other cell structure by projecting a hexagonal rib continuous on the back side. Further, the outer side of the front side buffer member and the rear side buffer member may be continuously integrated to form a U-shaped cross section.

  In addition, the thin display device assembly method according to the present invention is a thin structure having a structure in which the display panel, the backlight device positioned behind the display panel, the drive circuit portion of the display device, and the like are sandwiched and held by front and rear cabinets made of molded products. In the display device, the outer peripheral edge of the display panel is placed via a buffer member on a front cabinet placed with the back side as the upper surface, and the display panel rear surface abutting body is placed on the outer peripheral edge of the display panel via the buffer member. After the backlight device is stacked on the display panel rear surface contact body, the backlight device is screwed to the front cabinet from the backlight device side with the display panel rear surface contact body sandwiched therebetween. did.

  In addition, the thin display device assembly method according to the present invention is a thin structure having a structure in which the display panel, the backlight device positioned behind the display panel, the drive circuit portion of the display device, and the like are sandwiched and held by front and rear cabinets made of molded products. In the display device, a display panel whose outer peripheral edge is covered with an integrated cushioning member having a U-shaped outer cross section is placed on a front cabinet placed with the back side as the upper surface, and then one of the outer peripheral edges of the display panel is integrated. After the display panel rear surface abutting body is overlaid on the display buffering member, and the backlight device is overlaid on the display panel rear surface abutting body, the backlight device side holds the display panel rear surface abutting body in between. It is characterized in that screws are fastened to the front cabinet.

  As described above, according to the present invention, the display panel rear surface abutting portion is directly attached to the front cabinet without using the conventionally used bezel, so the number of parts is reduced, and accordingly, Weight reduction and thickness reduction are possible. In addition, the thin display device has a structure in which the backlight device is supported by the front cabinet, so the assembly procedure of the thin display device can be assembled in order from the front cabinet, and the assembly process is consistent and simple. As a result, the cost can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 are external views of a liquid crystal television according to the present invention, FIG. 4 is a cross-sectional view showing the main components of the backlight of the liquid crystal television and the liquid crystal panel, and FIG. 5 shows the front cabinet of FIG. FIG. 6 is an exploded perspective view showing a procedure for assembling the liquid crystal television. 1 to 3, reference numeral 100 denotes a liquid crystal panel for displaying an image, 101 denotes a front cabinet, 102 denotes a rear cabinet, 103 denotes operation buttons of the liquid crystal television body, 104 denotes a speaker, and 105 denotes a stand.

  Next, the support structure of the liquid crystal panel in the liquid crystal television of the present invention will be described. In FIG. 4, reference numeral 1 denotes a sheet metal backlight chassis. A fluorescent tube 2 as a light source is provided on the inner upper surface thereof, and a fluorescent tube electrode 2a is connected to an inverter circuit (not shown) via a lead wire 2c. The tube electrode 2a portion and the lead wire 2c are covered with an insulating rubber cap 2b, and the rubber cap 2b is fixed to the backlight chassis opening 1a. The resin lamp holder 3 covers the end of the fluorescent tube 2 and is screwed to the backlight chassis 1 in a state where the rubber cap 2b is pressed by the lamp holder contact surface 3a. Above the fluorescent tube 2, a diffusing plate 4 and an optical sheet 5 whose ends are placed on the lamp holder flat part 3b are arranged. These constitute a backlight device. Between the rising part of the backlight chassis 1 and the lamp holder 3, one side of a panel frame 6 made of a sheet metal having an L-shaped cross section is sandwiched.

  On the upper surface of the panel frame 6, a resin panel holder 7 having a cross-sectional crank shape and a frame shape is overlaid. The inner peripheral portion of the panel holder 7 that is the rear surface contact portion of the liquid crystal panel is formed one step lower, and the liquid crystal panel 9 (corresponding to the liquid crystal panel 100 in FIG. 1) is interposed in the stepped portion 7 a via the buffer member 8. The outer peripheral edge is pressed and fixed. The inner peripheral portion of the opening of the front cabinet 11 (corresponding to the front cabinet 101 in FIGS. 1 to 3) is formed in a frame shape, and the front end of the frame shape is a buffer member attached to the lower surface as the liquid crystal panel front contact portion 12 10, the liquid crystal panel 9 is pressed and fixed by the buffer member 8 and the buffer member 10.

  These buffer members 8 and 10 are preferably band-shaped elastomers having a rectangular cross section. The buffer members 8 and 10 are attached to the stepped portion 7a and the liquid crystal panel front surface contact portion 12 in advance, thereby improving the assembly workability. The buffer members 8 and 10 may be integrated by extending the outer peripheral portion thereof and fitted to the outer peripheral edge of the liquid crystal panel 9 as a buffer member having a U-shaped cross section. In that case, the sticking work becomes unnecessary, and the workability of the assembly is further improved.

  A stepped portion 7b formed on the outer periphery of the panel holder 7 is overlaid on a mounting flange 13 protruding from the rising portion of the backlight chassis 1, and further, the lower surface of the boss portion 14 of the front cabinet 11 is applied to the upper surface. It is touched. In this state, the screw 15 is screwed to the boss portion 14 from the lower surface side of the mounting flange 13, so that the backlight chassis 1 that supports the backlight device and the panel holder 7 that supports the lower surface of the liquid crystal panel 9 are attached to the front cabinet 11. It is concluded. As shown in FIG. 5, a honeycomb structure in which ribs project in a hexagonal shape on the surface on the liquid crystal panel 9 side of the region including at least the liquid crystal panel front surface contact portion 12 formed in the frame shape of the front cabinet 11 By doing so, weight reduction of the front cabinet 11 is achieved, maintaining required rigidity. In FIG. 4, the honeycomb structure is applied from the panel holder 7 contact portion to the liquid crystal panel front contact portion 12.

  As described above, since the liquid crystal panel 9 of the liquid crystal television is directly attached to and supported by the front cabinet 11, the conventionally used bezel is unnecessary, and the number of parts is reduced, and the weight and thickness are reduced accordingly. It becomes possible. Also, with this structure, as shown in FIG. 6, the assembly procedure for the liquid crystal television is also such that the front cabinet 11 is first placed with the back side up, The liquid crystal panel 9 is placed at the position of the buffer member 10, and the panel holder 7 is placed on the liquid crystal panel 9 while aligning the buffer member 8 portion of the panel holder 7 with the end of the liquid crystal panel 9. A backlight device in which the lamp holder 3 and the panel frame 6 are incorporated in the backlight chassis 1 is prepared, and the mounting flange 13 portion of the backlight chassis 1 is overlaid on the panel holder 7.

  At this time, the diffusion plate 4 and the optical sheet 5 are mounted on the front surface of the backlight device, and the liquid crystal panel 9 is disposed in front of the optical sheet 5. Next, a screw 15 is inserted through a mounting flange 13 projecting from the side of the backlight chassis 1 and fastened to the boss portion 14. Next, although not shown, the circuit board and other components are attached to the surface opposite to the surface of the liquid crystal panel 9 of the backlight chassis 1, and then the rear cabinet 102 is fitted and fastened to the front cabinet 11. By assembling in this way, the integrated production of the liquid crystal television becomes possible, and the cost can be reduced as the assembly process is shortened.

  In the illustrated example, the lower surface portion of the liquid crystal panel front surface abutting portion 12 has a honeycomb structure, but it is also possible to adopt a cell structure in which the arrangement pattern of ribs is a lattice shape, a brickwork, or other pattern. Further, in the present embodiment, the panel frame 6 and the panel holder 7 have been described as separate parts, but they can also be formed as an integral molded product, and the lamp holder 3, the panel frame 6 and the panel holder 7 are integrally molded. It is also possible to do. In the illustrated example, the liquid crystal television has been described. However, the structure of the portion excluding the backlight device can be applied to thin display devices such as other PDP televisions, and the device body can be made thin and light. Become.

  The present invention can be used for all thin display devices such as a PDP television in addition to a liquid crystal television.

1 is an external view of a liquid crystal television according to the present invention. 1 is an external view of a liquid crystal television according to the present invention. 1 is an external view of a liquid crystal television according to the present invention. It is sectional drawing which shows the principal part of a liquid crystal television. FIG. 5 is a partial rear view showing the front cabinet of FIG. 4 as a single unit. It is a disassembled perspective view which shows the assembly procedure of a liquid crystal television.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backlight chassis 2 Fluorescent tube 3 Lamp holder 4 Diffusion plate 5 Optical sheet 6 Panel frame 7 Panel holder 7a, 7b Step part 8 Buffer member 9 Liquid crystal panel 10 Buffer member 11 Front cabinet 12 Liquid crystal panel front contact part 13 Mounting flange 14 Boss part 15 Screw 100 Liquid crystal panel 101 Front cabinet 102 Rear cabinet 103 Operation buttons 104 of LCD TV main body Speaker 105 Stand

Claims (10)

In a thin display device having a structure in which the apparatus main body is sandwiched and held by front and rear cabinets made of molded products,
A thin display device characterized in that the edge of the display panel is held between the front cabinet having an opening corresponding to the display panel and the display panel rear surface abutting member via a buffer member. In a thin display device having a structure in which a display panel, a backlight device positioned behind the display panel, a drive circuit unit of the display device, and the like are sandwiched and held by a front and rear cabinet made of a molded product,
A thin display device characterized in that the edge of the display panel is held between the front cabinet having an opening corresponding to the display panel and the display panel rear surface abutting member via a buffer member. The thin display device according to claim 2,
A mounting flange is provided on the outer periphery of the backlight device, the mounting flange is overlapped with the display panel rear contact body and fastened to the front cabinet, and the display panel and the backlight device are supported by the front cabinet. A thin display device. The thin display device according to claim 3.
The display panel rear surface abutting body has one surface that abuts the edge of the display panel via a buffer member, and the other surface has a slight gap and faces the optical sheet of the backlight device. A thin display device. The thin display device according to claim 3.
The display panel rear surface abutting body includes a surface that abuts against an edge of the display panel via a buffer member, a surface that has a slight gap and faces the optical sheet of the backlight device, and the backlight device. A thin display device having a surface that presses a rubber cap that covers the fluorescent tube electrode portion. The thin display device according to any one of claims 1 to 5,
The thin display device according to claim 1, wherein the front cabinet side buffer member and the display panel side buffer member are formed in a U-shaped cross-section by continuously integrating their outer sides. The thin display device according to any one of claims 1 to 5,
The surface of the front cabinet facing the display panel has a cell structure in which a continuous rib protrudes at least indirectly through the buffer member to project the display panel. A thin display device. The thin display device according to claim 7,
The liquid crystal display device according to claim 1, wherein the cell structure has a honeycomb structure by protruding continuous hexagonal ribs. In a thin display device having a structure in which a display panel, a backlight device positioned behind the display panel, a drive circuit unit of the display device, and the like are sandwiched and held by a front and rear cabinet made of a molded product,
An outer peripheral edge of the display panel is placed through a buffer member on a front cabinet placed with the back side as an upper surface, and a display panel rear surface contact body is stacked on the outer peripheral edge of the display panel through the buffer member. A thin display device comprising: a backlight device overlaid on a panel rear surface contact body; and a screw fastening from the backlight device side to the front cabinet with the backlight device sandwiching the display panel rear surface contact body. Assembly method. In a thin display device having a structure in which a display panel, a backlight device positioned behind the display panel, a drive circuit unit of the display device, and the like are sandwiched and held by a front and rear cabinet made of a molded product,
A display panel covered with an integrated buffer member whose outer peripheral edge is U-shaped is placed on the front cabinet placed with the back side as the upper surface. Next, the display panel is placed on one of the integrated buffer members on the outer peripheral edge of the display panel. After the display panel rear surface contact body is overlaid and the backlight device is stacked on the display panel rear surface contact body, the backlight device is inserted from the backlight device side to the front cabinet with the display panel rear surface contact body sandwiched therebetween. A method of assembling a thin display device, characterized in that a screw is fastened.

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