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Backlight module and optical plate thereof

A technology for backlight modules and optical boards, applied in optics, optical components, nonlinear optics, etc., can solve the problems of increasing the number of light interfaces, reducing light utilization, and increasing the loss of light transmission interfaces, so as to avoid interface losses and improve The effect of light utilization

Inactive Publication Date: 2012-12-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when the light is transmitted in the prism sheet 10 and the upper diffusion sheet 14, part of the light will be absorbed and cause light loss; The number of interfaces increases the interface loss of light transmission and reduces light utilization

Method used

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  • Backlight module and optical plate thereof
  • Backlight module and optical plate thereof
  • Backlight module and optical plate thereof

Examples

Experimental program
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Embodiment Construction

[0022] The backlight module and its optical board of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0023] see Figure 3 to Figure 5 , shows the optical plate 20 according to the preferred embodiment 1 of the present invention, which is composed of a transparent body, and the transparent body includes a first surface 201 and a second surface 202 opposite to the first surface 201 . The first surface 201 has a plurality of elongated V-shaped protrusions 203 and elongated arc-shaped protrusions 205 arranged alternately and parallel to each other. The second surface 202 has a plurality of parallel elongated arc-shaped grooves 206 . The extending direction of the plurality of elongated V-shaped protrusions 203 or the elongated arc-shaped protrusions 205 intersects the extending direction of the plurality of elongated arc-shaped grooves 206 . In this embodiment, the extending direction of the plurality of elongated...

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Abstract

An exemplary optical plate has a first surface and an opposite second surface. A plurality of elongated V-shaped protrusions and a plurality of elongated arc-shaped protrusions are arranged in an alternating manner. Each elongated V-shaped protrusion is substantially parallel to each arc-shaped protrusion. A plurality of elongated arc-shaped grooves is defined on the second surface. An extending direction of each elongated arc-shaped protrusion intersects with an extending direction of each elongated arc-shaped groove. A backlight module using the optical plate is also provided.

Description

technical field [0001] The invention relates to a backlight module and its optical board, in particular to a backlight module for liquid crystal display and its optical board. Background technique [0002] See figure 1 , shows a conventional direct-lit backlight module 100, which includes a frame 11, a plurality of light sources 12 disposed inside the frame 11, and a diffusion plate 13 disposed above the light sources 12 and covering the frame 11. [0003] In use, the light generated by the plurality of light sources 12 can be diffused after entering the diffuser plate 13 . However, after being diffused by the diffuser plate 13, the angles at which light emerges from the diffuser plate 13 become more chaotic, so that its brightness in a specific viewing angle range is not high; It is still often difficult for the plate 13 to directly diffuse the light from the light source 12 evenly, so that the light emitted from the diffuser plate 13 is prone to light source afterimages,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B6/00F21V8/00
CPCG02B5/045G02F2001/133607G02B6/0053G02F1/133607Y10T428/2457
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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