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Light guide plate and back light module using same

A technology of a backlight module and a light guide plate, applied in the field of optical plates, can solve the problems of wear and tear of the light emitting diode 124 and the semi-cylindrical body 116 and easy occurrence of light leakage, so as to achieve the effect of preventing mutual wear and preventing wear and tear.

Inactive Publication Date: 2011-08-03
CANYU OPTICAL NANJING
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In the known technology, since the light-emitting diode 124 will contact these semi-cylinders 116, and the light-emitting diode 124 and the semi-cylindrical body 116 may move relative to each other along the X direction or along the Y direction, causing the light-emitting diode 124 and the semi-cylindrical body to 116 wear each other
In addition, since there is a gap S1 between the LED 124 and the semi-cylindrical body 116, light leakage is likely to occur.

Method used

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  • Light guide plate and back light module using same
  • Light guide plate and back light module using same
  • Light guide plate and back light module using same

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Embodiment Construction

[0027] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0028] Please refer to figure 2 and image 3 , the backlight module 200 of this embodiment includes a light guide plate 210 and a light source group 220 . The light guide plate 210 has a light incident surface 212 , a protruding portion 214 is formed on an edge of the light incident surface 212 , and a microstructure 216 is formed on the light incident surface 212 . The height D1 of the microstructure 216 relative to the light incident surface 212 is smaller than the height D2 of the protr...

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Abstract

The invention relates to a light guide plate which is provided with a light entering surface, wherein the edge of the light entering surface is provided with a lug boss; the light entering surface is provided with a micro structure; the height of the micro structure relative to the light entering surface is less than that of the lug boss relative to the light entering surface; and the lug boss of the light guide plate can be used for supporting a light source group so as to avoid the mutual friction of the light source group and the micro structure and then protect the micro structure and the light source group. In addition, the invention also provides a back light module using the light guide plate.

Description

technical field [0001] The present invention relates to an optical plate, and in particular to a light guide plate and a backlight module using the same. Background technique [0002] The backlight module is used in the liquid crystal display device to provide the display light source required by the liquid crystal display panel. Backlight modules can be divided into direct-lit backlight modules and side-illuminated backlight modules. The technology of side-illuminated backlight modules has been disclosed in many patents, such as Taiwan Patent No. I253523 and I275846 , M292707, M312679 and M317584 and other patents. [0003] Please refer to figure 1 , the known backlight module 100 includes a light guide plate 110 and a light source group 120 . The light guide plate 110 has a light incident surface 112 and a light exit surface 114 , and the light incident surface 112 is provided with a plurality of semi-cylindrical bodies 116 to avoid the obvious bright and dark situation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00G02F1/13357
Inventor 陈俊伟
Owner CANYU OPTICAL NANJING
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