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Backlight module and liquid crystal display device

A liquid crystal display device and backlight module technology, which is applied to lighting devices, fixed lighting devices, optics, etc., can solve problems such as local dark areas, poor optical quality, uneven light mixing, etc., and achieve increased coverage and improved The effect of optical taste

Inactive Publication Date: 2013-10-23
XINCHENG TECH CHENGDU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of uneven light mixing, poor optical quality and local dark areas when liquid crystal display devices display images in the prior art, it is necessary to provide a backlight module that can improve the light mixing effect and improve the optical quality

Method used

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  • Backlight module and liquid crystal display device
  • Backlight module and liquid crystal display device
  • Backlight module and liquid crystal display device

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Embodiment Construction

[0029] Please refer to figure 1 , is a three-dimensional exploded schematic diagram of a preferred embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 1 includes a liquid crystal display panel 10 and a backlight module 30 opposite to the liquid crystal display panel. The backlight module 30 provides planar light for the liquid crystal display panel 10 .

[0030] The backlight module 30 includes a light guide plate 31 , a reflection sheet 33 , at least one point light source 35 and at least one optical film 37 . In this embodiment, the light guide plate 31 is a flat light guide plate, and at least one corner of the light guide plate 31 is cut off, so as to form a corresponding cut surface 317 on the light guide plate 31 . The cut surface 317 has at least one bending unit 319, one point light source 35 is provided corresponding to one bending unit 319, and the cut surface 317 is used as the light incident surface of the li...

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Abstract

The invention relates to a backlight module and a liquid crystal display device with the backlight module. The liquid crystal display device comprises a liquid crystal display panel and the backlight module which is arranged adjacent to the liquid crystal display panel. The backlight module comprises a light guide plate and at least one point light source, wherein the light guide plate comprises at least one corner cut, so that a corresponding cut face is formed on the corner cut of the light guide plate, and the cut face serves as a light entering face of the light guide plate. The light guide plate further comprises a top face and a bottom face, wherein the top face serves as a light outgoing face of the light guide plate, and is connected with each cut face, and the bottom face is arranged opposite to the top face. The point light source comprises a light outgoing face used for outgoing light. The cut face comprises at least one bent unit, the point light source is arranged corresponding to the bent unit, and the bent unit is a concave curved surface.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device. Background technique [0002] In the field of display devices, such as liquid crystal displays, since liquid crystal itself does not have light-emitting properties, in order to achieve display effects, it is necessary to provide a light-emitting device for the liquid crystal display panel, such as a backlight module, whose function is to provide a surface light source for the liquid crystal display panel. [0003] Currently, the light source in the backlight module usually adopts a point light source, such as an LED light source. Because the light emitted by the point light source is directional, the angle at which the light emitted by the light source enters the light guide plate is limited, which may easily cause uneven light mixing and local dark areas of the liquid crystal panel, which makes the optical quality of the liquid crystal display device poor and unsuitable f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V8/00G02F1/13357
Inventor 潘钧允王智勇
Owner XINCHENG TECH CHENGDU
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