Backlight module and liquid crystal display device

A backlight module and light technology, applied in lighting devices, fixed lighting devices, components of lighting devices, etc., can solve problems such as uneven light output, and achieve the effect of extending the propagation path and improving the light mixing effect.

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
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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 , a reflection structure 28 and a light guide strip 29 . In this embodiment, the reflection structure 28 is an independent reflection sheet, which covers part of the light guide plate 26 and the light guide strip 29 . In other embodiments, the reflective structure 28 may also be directly formed on the surface of the light guide plate 26 and the light guide strip 29 .

[0023] see image 3 The light guide plate 26 includes a top surface 260 , a bottom surface...

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Abstract

The invention relates to a backlight module and a liquid crystal display device. A light guide plate of the backlight module comprises a top face, a bottom face and a first side face through which the top face and the bottom face are connected. The top face includes an incident area and an emergent area. The incident area is adjacent to one end of the first side face in relation to the emergent face. A light guide bar of the backlight module comprises an incident face, an emergent face adjacent to the incident face and a connecting face. The incident face of the light guide bar faces a point source. The emergent face of the light guide bar faces the incident area of the light guide plate. Reflecting structures include the first reflecting structure and the second reflecting structure. The first reflecting structure covers part of the light guide plate. The second reflecting structure covers part of the light guide bar. Light of a point source enters the light guide bar through the incident face of the light guide bar, propagates in another way after being reflected by the second reflecting structure, and comes out of the light guide bar through the emergent face. The light from the emergent face enters the light guide plate through the incident area and then is then reflected by the first reflecting structure before coming out of the light guide plate.

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