Backlight module and light guide plate thereof

A technology of backlight module and light guide plate, applied in the direction of light guide, light guide of lighting system, optics, etc., can solve the problems of increased manufacturing cost and difficulty, prolonging product verification time, etc.

Inactive Publication Date: 2011-06-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods all require changing the mold, prolonging the product verification time, which in turn increases the manufacturing cost and difficulty

Method used

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  • Backlight module and light guide plate thereof
  • Backlight module and light guide plate thereof
  • Backlight module and light guide plate thereof

Examples

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention are exemplified below and described in detail in conjunction with the accompanying drawings. Furthermore, the directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., It is only for orientation with reference to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0038] Please refer to Figure 4 and Figure 5 as shown, Figure 4 is a three-dimensional schematic diagram of a light guide plate according to the first embodiment of the present invention, Figure 5 then Figure 4 side view. The light guide plate includes a light incident surface 10 , a light exit surface 11 and a microstructure combination 12 . The light ...

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Abstract

The invention discloses a backlight module and a light guide plate thereof. The light guide plate comprises a lateral light incident side, a light emergent side adjacent to the lateral light incident side and a microstructural combination adjacent to the lateral light incident side. The light incident side is used for receiving the incident light rays of a luminous source. The microstructural combination comprises a plurality of strip prisms arranged side by side, and one end of each prism is towards the lateral light incident side, thus the extension direction of the prism and the normal direction of the light emergent side of the luminous source are parallel or approximately parallel. The light guide plate can increase the propagation distance of light rays to provide uniform brightness, thus the structure of the prism can be maintained to be uniformly distributed, and the design of a prism mould is unnecessary to be changed according to the requirement of panels in different sizes.

Description

【Technical field】 [0001] The invention relates to a backlight module and its light guide plate, in particular to a prism structure and direction arrangement of the light guide plate, which can improve the luminance of the backlight module, increase the light propagation distance, and provide a backlight with uniform luminance Module and its light guide plate. 【Background technique】 [0002] Since the liquid crystal panel of the liquid crystal display does not have the function of self-illumination, the liquid crystal display needs to be further equipped with a backlight module to supply sufficient and evenly distributed surface light sources for the liquid crystal panel. Generally speaking, backlight modules can be mainly divided into two types: direct-type and side-type, and the light guide plate is a key component for the side-type backlight module to provide a uniform surface light source. The light guide plate uses the principle of total reflection to transmit the light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02B5/04F21V8/00F21S8/00G02F1/13357
CPCG02B6/0068G02F1/133615G02B6/0038G02B5/045
Inventor 张光耀方扩军
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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