Backlight module and diffusion plate thereof

A diffusion plate and dispersion technology, applied in the direction of optics, nonlinear optics, diffuser elements, etc., can solve the problems of light loss, reduce light utilization rate, increase light transmission interface loss, etc.

Inactive Publication Date: 2010-01-13
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

However, when the light is transmitted in the upper diffusion sheet 14, part of the light will be absorbed by the upper diffusion sheet 14 and cause part of the light loss; and the use of the upper diffusion sheet 14 will also increase the number

Method used

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  • Backlight module and diffusion plate thereof
  • Backlight module and diffusion plate thereof
  • Backlight module and diffusion plate thereof

Examples

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Embodiment Construction

[0025] The diffusion plate of the present invention will be further described in detail with reference to the drawings and embodiments.

[0026] See image 3 , shows the backlight module 200 of the preferred embodiment 1 of the present invention, which includes a diffuser plate 20, a plurality of light sources 21 and a frame 22 for accommodating a plurality of light sources 21, the light emitted by the light sources 21 is reflected directly or through the frame 22 Enter diffuser plate 20.

[0027] See Figure 4 and Figure 5 , the diffusion plate 20 is composed of a body containing scattering particles 201 , and the body includes a first surface 210 and a second surface 220 opposite to the first surface 210 . The first surface 210 has a plurality of first elongated arc-shaped grooves 212 and a plurality of second elongated arc-shaped grooves 214, the first elongated arc-shaped grooves 212 and the second elongated arc-shaped grooves The slots 214 are distributed alternately...

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Abstract

A diffusion plate comprises a body; wherein, the body is made of transparent materials in which scattering particles are dispersed and comprises a first surface and a second surface opposite to the first surface; the first surface is provided with a plurality of alternately distributed first long strip arc grooves and second long strip arc grooves; when the first long strip arc grooves and the second long strip arc grooves extend from one side of the diffusion plate to the other side, the width of the first long strip arc grooves gradually increases while the width of the second long strip arc grooves gradually decreases; the second surface is provided with a plurality of alternately distributed first long strip arc bulges and second long strip arc bulges; when the first long strip arc bulges and the second long strip arc bulges extend from one side of the diffusion plate to the other side, the width of the first long strip arc bulges gradually increases while the width of the second long strip arc bulges gradually decreases. The diffusion plate has the advantages of improving effective utilization ratio of light and enjoying uniformity of light emission. The invention also provides a backlight module adopting the diffusion plate.

Description

technical field [0001] The invention relates to a backlight module and a diffusion plate thereof, in particular to a backlight module for liquid crystal display and a diffusion plate thereof. Background technique [0002] See figure 1 and figure 2 , shows an existing direct-lit backlight module 100, which includes a frame 11, a plurality of light sources 12 arranged inside the frame 11, a diffusion plate 13 arranged above the light sources 12 and covering the frame 11, and A prism sheet 10. Wherein, the diffusion plate 13 generally contains scattering particles for diffusing light. The prism sheet 10 includes a transparent substrate 101 and a prism layer 103 formed on the transparent substrate 101 . The prism layer 103 has a plurality of elongated V-shaped protrusions 105 . [0003] When in use, the light generated by the plurality of light sources 12 enters the diffuser plate 13 and is uniformly diffused, then continues to enter the prism sheet 10, and under the actio...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02F1/13357
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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