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Backlight module and liquid crystal display equipment

A technology of backlight module and optical film, applied in optics, nonlinear optics, instruments, etc.

Active Publication Date: 2016-08-31
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the backlight module needs to be equipped with multi-layer optical films, including a variety of film combinations such as brightness enhancement film and diffusion film, among them, the surface of the brightness enhancement film is provided with microstructures arranged horizontally, which will form light rays on the plastic frame. The dark area is stretched horizontally, and the dark area after passing through the optical film will still expand to the visible area. Therefore, the dark area on the visible area will form a display shadow problem

Method used

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  • Backlight module and liquid crystal display equipment
  • Backlight module and liquid crystal display equipment
  • Backlight module and liquid crystal display equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] image 3 It is a schematic diagram of fixing the diaphragm of the backlight module in Embodiment 1 of the present invention; Figure 4 It is a schematic diagram of the A-A section of the backlight module in Embodiment 1 of the present invention; Figure 5 It is a schematic diagram of the C-C section of the backlight module in Embodiment 1 of the present invention; Image 6 It is a B-B cross-sectional schematic view of the backlight module in Embodiment 1 of the present invention. like image 3 , Figure 4 , Figure 5 and Image 6 As shown, Embodiment 1 of the present invention provides a backlight module 200 , including a fixing frame 70 and an optical film set 60 .

[0033] The backlight module 200 in the first embodiment can be applied to a liquid crystal display device. Specifically, the liquid crystal panel is placed on the backlight module 200, and the backlight module 200 and the liquid crystal panel are assembled together by a fixing device to form a liquid...

Embodiment 2

[0046] like Figure 9 As shown, the difference from Embodiment 1 is that the second optical film 603, the first optical film 602, the brightness enhancement film 601 and the fourth optical film 604 sequentially form a staggered layer structure on the protruding part of the edge of the film. . Wherein, the shape and size of the edge protrusion 6011 of the incremental film 601 and the edge protrusion 6031 of the second optical film 603 are the same, and the shape and size of the edge protrusion 6021 of the first optical film 602 and the edge protrusion 6041 of the fourth optical film 604 are the same same size.

[0047] Further, the area of ​​the edge protrusion 6011 of the incremental film 601 is larger than the area of ​​the edge protrusion 6021 of the first optical film 602 .

[0048] On the one hand, on the protruding portion of the film that is not covered by the brightness enhancing film 601, the dark area will not be expanded by the brightness enhancing film 601, and th...

Embodiment 3

[0051] like Figure 10 As shown, the same as in the second embodiment, the second optical film 603, the first optical film 602, the brightness enhancement film 601 and the fourth optical film 604 form interlaced staggered layers sequentially on the protruding part of the edge of the film. structure. Wherein, the shape and size of the edge protrusion 6011 of the incremental film 601 and the edge protrusion 6031 of the second optical film 603 are the same, and the shape and size of the edge protrusion 6021 of the first optical film 602 and the edge protrusion 6041 of the fourth optical film 604 are the same same size.

[0052] Different from the second embodiment, the area of ​​the edge protrusion 6011 of the incremental film 601 is smaller than the area of ​​the edge protrusion 6021 of the first optical film 602 .

[0053] On the one hand, on the protruding portion of the film that is not covered by the brightness enhancing film 601, the dark area will not be expanded by the ...

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Abstract

The invention provides a backlight module and liquid crystal display equipment. The backlight module comprises a fixing frame and optical membrane sets. The fixing frame comprises a side wall and a supporting arm extending in the vertical direction of the side wall. The upper surface of the supporting arm is provided with membrane fixing parts. Each optical membrane set comprises a brightening film and a first optical membrane, wherein the first optical membrane is arranged on the side, close to the fixing frame, of the brightening film and is adjacent to the brightening film. Each optical membrane is provided with a membrane edge protruding part. The optical membrane sets are matched with the membrane fixing parts through the membrane edge protruding parts to be fixed to the fixing frame. Parts, on the membrane edge protruding parts, of the brightening films and the first optical membranes do not overlap. The problem of shadow display in a visual area is reduced..

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display device. Background technique [0002] The liquid crystal display device includes a liquid crystal panel and a backlight module that provides a light source for the liquid crystal panel. Optical components (such as: light guide plate, optical film, etc.) and fixing components (backlight and plastic frame, etc.) that provide fixing and supporting functions. [0003] In the prior art, in order to narrow the frame of the liquid crystal display device and reduce the frame space reserved for the diaphragm lugs, the technical solution of placing the diaphragm on top is usually adopted, for example: the diaphragm is fixed on the glue through the diaphragm lugs. on the upper surface of the frame support arm, such as figure 1 As shown, the backlight module 100 includes: a plastic frame 20, a back plate (not shown in the figur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
Inventor 刘敏胡小龙
Owner HISENSE VISUAL TECH CO LTD
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