Backlight module and liquid crystal display device

A backlight module and light technology, which is applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve problems such as uneven light output, and achieve uniform light output, extended propagation paths, and good light mixing effects.

Inactive Publication Date: 2013-12-04
XINCHENG TECH CHENGDU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of uneven light output after the miniaturization of the prior art back

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] see figure 2 , figure 2 It is a three-dimensional exploded schematic view of the first embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 2 includes a liquid crystal panel 22 and a backlight module 23 . The backlight module 23 is adjacent to the liquid crystal panel 22 and provides backlight for the liquid crystal panel 22 .

[0022] The backlight module 23 includes a plastic frame 25 , an optical film set 24 , a light guide plate 26 , a light source 27 and a reflective structure 28 . In this embodiment, the reflective structure 28 is an independent reflective sheet covering part of the light guide plate 26 . In other implementation manners, the reflective structure 28 may also be directly formed on the outer surface of the light guide plate 26 and part of the inner surface of the plastic frame 25 .

[0023] see image 3 , the light guide plate 26 includes a first portion 269 and a second portion 268 adjace...

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Abstract

The invention relates to a backlight module and a liquid crystal display device. The backlight module comprises point light sources, a light guide plate and a reflection structure. The light guide plate comprises a light incident face, a first surface with a light emergent area, and a bottom face arranged opposite to the first surface, wherein the light incident face is used for receiving light emitted by the point light sources, the light emergent area is used for leading light inside the light guide plate out of the light guide plate, the light guide plate is divided into a first portion and a second portion by the plane where the first surface is located, the bottom face is arranged on the second portion, the first portion is arranged on one side, far away from the bottom face, of the light guide plate divided by the plane, the light incident face is arranged on one surface of the first portion, one end of the light incident face intersects with one end of the first surface, the other end of the light incident face is connected with the bottom face through connecting faces, the reflection structure covers the bottom face and the connecting faces, and the light emitted by the point light sources enters the light guide plate through the light incident face, is reflected by the reflection structure, and goes out of the light guide plate through the light emergent area. The backlight module is even in light emergence.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device. Background technique [0002] In recent years, liquid crystal display devices have gradually occupied the mainstream of display products and gradually replaced traditional cathode ray tube display devices due to the advantages of light and thin volume, small space occupation, and low radiation. A liquid crystal display device usually includes a side light source, such as a backlight module, to provide a plane light with sufficient brightness and uniformity for the liquid crystal panel. [0003] see figure 1 , is a perspective schematic diagram of a backlight module in the prior art. The backlight module 1 includes a light guide plate 12 and three point light sources 13. Each point light source 13 has a light emitting side 131. The three point light sources 13 are arranged side by side and have the same light emitting direction. The light guide plate 12 includes a light ...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V13/04F21V19/00G02F1/13357
Inventor 王智勇黄星童
Owner XINCHENG TECH CHENGDU
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