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Light guiding plate

A technology of light guide plate and light collection, applied in the field of light guide plate, can solve the problem of high cost of the backlight module 100, and achieve the effects of increasing concentration, reducing cost, and limiting the angle of light exiting

Inactive Publication Date: 2008-07-16
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional backlight module 100 needs to use multiple optical films, and the cost of these films accounts for 30% to 40% of the cost of the entire backlight module 100, resulting in high cost of the backlight module 100.

Method used

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Embodiment Construction

[0043] FIG. 2 is a perspective view of a light guide plate according to an embodiment of the present invention. Referring to FIG. 2 , the light guide plate 200 has a light emitting surface S10 , a bottom surface S20 and at least one light incident surface S30 connecting the light emitting surface S10 and the bottom surface S20 . The light guide plate 200 is formed by stacking multiple material layers (two material layers 210 and 220 are taken as an example in this embodiment), and each material layer 210 and 220 is substantially parallel to the light emitting surface S10 . That is, the part of the light guide plate 200 close to the light-emitting surface S10 is made of the same material layer (such as the material layer 210), and the part of the light guide plate 200 close to the bottom surface S20 is also made of the same material layer (such as the material layer 220). ) constitutes.

[0044] Roughly speaking, both the light-emitting surface S10 and the bottom surface S20 o...

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Abstract

The invention discloses a light guiding plate which is provided with a light exiting surface, a bottom surface and at least one light injecting surface connecting the light exiting surface and the bottom surface. The light guiding plate is essentially formed by the overlapping of a plurality of layers of materials parallel to the light exiting surface. The light exiting surface is provided with a plurality of strip-shaped complex beam adjusting and control mechanisms and the bottom surface is provided with a plurality of light reflection structures. The light guiding plate can provide a surface light source with high brightness and excellent uniformity in the direction vertical to the light guiding plate.

Description

technical field [0001] The present invention relates to a light guide plate, in particular to a light guide plate with multi-layer materials. Background technique [0002] Since the liquid crystal display panel is a non-self-illuminating display panel, it needs a backlight module to provide a planar light source. The side-illuminated backlight module uses a light guide plate to form a plane light source. The function of the light guide plate is to reflect the point light source or the line light source entering from the light incident side of the light guide plate and emit it from the light exit surface of the light guide plate to become a plane light source. FIG. 1 is a schematic diagram of a conventional side-illuminated backlight module. Please refer to FIG. 1. In addition to the light source 110, the light guide plate 120 and the reflection sheet 130, the existing side-illuminated backlight module 100 also uses two diffusion sheets 140 and two prism sheets 150 perpendi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/1335
Inventor 张延瑜杨文勋
Owner IND TECH RES INST