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Light guide board and backlight module

A technology of backlight module and light guide plate, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of increasing the production cost of backlight module and so on.

Inactive Publication Date: 2014-10-22
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the luminance of the backlight module, it is usually necessary to use a light source with higher brightness, thus increasing the production cost of the backlight module

Method used

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  • Light guide board and backlight module
  • Light guide board and backlight module
  • Light guide board and backlight module

Examples

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Embodiment Construction

[0014] see figure 1 and figure 2 , the backlight module 100 provided by the first embodiment of the present invention includes a light guide plate 10 , a plurality of light sources 20 and a reflective sheet 30 .

[0015] The light guide plate 10 is disposed above the plurality of light sources 20 , that is, the light guide plate 10 is opposite to the plurality of light sources 20 . The light guide plate 10 is roughly plate-shaped, and has a light-incident surface 11 and a light-exit surface 12 opposite to each other. The light incident surface 11 and the light exit surface 12 are arranged parallel to each other. The light incident surface 11 is opposite to the light source 20 .

[0016] The light guide plate 10 is made of a light-transmitting material, and the material of the light guide plate 10 can be polycarbonate (PC), polymethyl methacrylate (PMMA), methyl methacrylate, styrene copolymer ( MS), polyethylene terephthalate (PETG), polystyrene (PS) or a mixture of two o...

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Abstract

The invention relates to a light guide board. The light guide board has a light incoming face and a light outgoing face which are opposite to each other, wherein a micro structure is formed on the light outgoing face, the micro structure is multiple tri-prism-shaped convex projections which are parallel and are arranged with intervals, each of the tri-prism-shaped convex projections has a first side face and a second side face which are mutually connected, the first side face and the second side face are respectively connected with the light outgoing face, the first side face and the second side face have an included angle in a range of 130-170 DEG, a crossing line of the first side face and the second side face is in parallel with the light outgoing face, a distance from the crossing line of the first side face and the second side face to the light outgoing face is in a range of 1.3-5.5mum, and a distance between two crossing lines of the first side faces and the second side faces of the two adjacent tri-prism-shaped convex projections is in a range of 30-50mum. The invention further relates to a backlight module having the light guide board.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module, in particular to a light guide plate used for a direct type backlight module and a backlight module with the light guide plate. Background technique [0002] As a light source module, the backlight module is often used to illuminate electronic devices such as instruments and display devices. A typical direct-lit backlight module includes a plurality of light sources and a light guide plate opposite to the plurality of light sources. In order to increase the luminance of the backlight module, it is usually necessary to use a light source with higher brightness, which increases the production cost of the backlight module. Therefore, it is necessary to provide a light guide plate and a backlight module, which can improve the luminance of light emitted from the backlight module. Contents of the invention [0003] In view of this, it is necessary to provide a light guide plate capable ...

Claims

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Application Information

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IPC IPC(8): G02B6/00F21V8/00
Inventor 林辰翰
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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