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Liquid crystal display device

A technology of liquid crystal display devices and liquid crystal panels, which is applied in lighting devices, components of lighting devices, optics, etc., can solve the problems of light leakage at the edge of liquid crystal displays, light that cannot be absorbed, and black borders that cannot be printed, so as to reduce light, Improve the effect of side light leakage

Active Publication Date: 2013-04-24
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, black borders cannot be printed on the composite film and prism sheet, and the light emitted from the gap between the light guide plate and the optical film cannot be absorbed. Therefore, it will cause light leakage at the edge of the liquid crystal display with a three-layer film structure. Phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Figure 4 Shown is a schematic structural view of the liquid crystal display device in the first embodiment provided by the present invention. In the liquid crystal display device provided in this embodiment, the phenomenon of light leakage at the side of the liquid crystal display device is improved by forming a light absorbing layer on the bottom reflection sheet located on the side of the light guide plate close to the back plate.

[0045] Specifically, such as Figure 4 As shown, the liquid crystal display device provided in this embodiment includes:

[0046] LCD panel 100

[0047] a backplane 30 disposed opposite to the liquid crystal panel 100;

[0048] The bottom reflector 60, the light guide plate 40 and the optical film 50 arranged between the back plate 30 and the liquid crystal panel 100, wherein the bottom reflector 60, the light guide plate 40 and the optical film 50 are close to the liquid crystal from the side close to the back plate 30 One side of the ...

Embodiment 2

[0057] Figure 5 Shown is a schematic structural diagram of the second embodiment provided by the present invention. like Figure 5 As shown, in this embodiment, the light absorbing layer 200 is also arranged on the bottom reflection sheet 60. Compared with the first embodiment provided by the present invention, the only difference is that the end of the plastic frame 20 close to the light guide plate 40 is on the A concave cavity is formed at a position corresponding to the light guide plate 40 (that is, the second inner end surface 202 ), and the outer end surface of the light guide plate 40 close to the plastic frame 20 extends into the cavity, so that There will be a partial overlap between the light-emitting surface and the plastic frame 20, and the end of the bottom reflective sheet 60 close to the plastic frame 20 also extends into the concave cavity. From the edge of one end to the position corresponding to the slit A, the width and size of the light-absorbing layer ...

Embodiment 3

[0059] Image 6 Shown is a schematic structural view of the liquid crystal display device in the third embodiment provided by the present invention. In the liquid crystal display device provided in this embodiment, the light-absorbing layer 200 is formed on the lower diffusion sheet of the optical film 50 on the side of the light guide plate 40 away from the back plate 30 to improve side light leakage of the liquid crystal display device.

[0060] Specifically, such as Image 6 As shown, the liquid crystal display device provided in this embodiment includes:

[0061] LCD panel 100;

[0062] a backplane 30 disposed opposite to the liquid crystal panel 100;

[0063] The bottom reflector 60, the light guide plate 40 and the optical film 50 arranged between the back plate 30 and the liquid crystal panel 100, wherein the bottom reflector 60, the light guide plate 40 and the optical film 50 are close to the liquid crystal from the side close to the back plate 30 One side of the ...

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Abstract

The invention provides a liquid crystal display device. The liquid crystal display device comprises a liquid crystal display panel, a back plate, a bottom reflector, a light guide plate, an optical diaphragm and a rubber frame, wherein the back plate is opposite to the liquid crystal display panel, the bottom reflector, the light guide plate and the optical diaphragm are sequentially arranged from one side close to the back plate to one side close to the liquid crystal display panel, and the rubber frame is arranged outside the bottom reflector, the light guide plate and the optical diaphragm. A gap is reserved between the rubber frame and the optical diaphragm, and a light absorption layer for absorbing light emergent from the light guide plate to the gap is arranged at the position, corresponding the gap, on at least one of one side of the light guide plate far away from the back plate and one side of the light guide plate close to the back plate. Since the light absorption layer is arranged at the corresponding position of the gap between the rubber frame and the optical diaphragm, the light in the light guide plate can be absorbed at the light absorption layer, the light emergent from the gap between the rubber frame and the optical diaphragm is reduced, and the problem of lateral light leakage of the liquid crystal display device is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device. Background technique [0002] Liquid crystal display is the most commonly used flat-panel display at present, such as figure 1 As shown, a traditional liquid crystal display includes a liquid crystal panel 100 and a backlight module. The backlight module includes a frame 10, a plastic frame 20, a back plate 30, a light guide plate 40, an optical film 50, a bottom reflection sheet 60, etc., wherein the bottom reflection The sheet 60 , the light guide plate 40 and the optical film 50 are sequentially arranged from the side close to the back plate 30 to the side away from the back plate 30 . The optical film 50 usually adopts a four-layer film structure, consisting of an upper diffusion sheet 51 , an upper prism sheet 52 , a lower prism sheet 53 , and a lower diffusion sheet 54 arranged sequentially from the side near the light guide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357F21V13/00
Inventor 王小丽朴炳仁
Owner HEFEI BOE OPTOELECTRONICS TECH
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