Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same

A diffusion structure and diffusion plate technology, which is applied in the field of diffusion plates, can solve the problems of low production feasibility and uneven light output of dot matrix LEDs, and achieve the effect of improving the uneven distribution of singular light and dark

Active Publication Date: 2012-11-07
TPV DISPLAY TECH (XIAMEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the above-mentioned non-uniform light emission of dot-matrix LEDs, the existing technology (patent application number is CN201010002819.3) designs a diffusion structure on the diffusion plate. The diffusion structure is composed of a single pattern and has low production feasibility.

Method used

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  • Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same
  • Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same
  • Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same

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Embodiment Construction

[0034] In this embodiment, a single matrix diffusion structure and 4 matrix lattice diffusion structures, and the speckle pattern as dots are used for illustration. The diffusion plate is provided with a dot-matrix diffusion structure, and the center of the dot-matrix diffusion structure corresponds to the light source center of the backlight one by one.

[0035] The diffusion structure includes two structures:

[0036] Such as figure 1 As shown, the central area of ​​structure one is a disc 1, and the disc 1 is provided with hollow spots arranged in concentric rings, and the outside of the central area is solid spots 2 arranged in concentric rings, wherein the solid spots and non-hollow spot areas of the disk are coated with diffusion structures.

[0037] Such as figure 2 As shown, the central area of ​​structure 2 is rings 3 arranged in concentric rings, and the outside of the central area is solid spots 4 arranged in concentric rings, wherein the rings 3 and the solid s...

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Abstract

The invention discloses a diffusion plate with dot-matrix diffusion structures. The dot-matrix diffusion structures are arranged on an out-light surface or an in-light surface of the diffusion plate, and centers of the diffusion structures correspond to light source centers of backlight sources one by one. The diffusion structures include two structures: the first structure includes that the center area of the first diffusion structure is a circular disc, hollow spots arranged in concentric circles are arranged on the circular disc, solid spots arranged in concentric circles are arranged outside the central area, and the first diffusion structure is coated on the solid spots and positions around the hollow spots on the circular disc; the second structure includes that circular rings arranged in concentric circles are distributed in the central area of the second diffusion structure, solid spots arranged in concentric circles are arranged outside the central area, and the second diffusion structure is coated on the circular rings and the solid spot areas. Intensities of diffusion structures on all circles of the first and the second structures become smaller and smaller from the center to the outside.

Description

technical field [0001] The invention relates to a diffusion plate in a backlight module, in particular to a diffusion plate with a dot-matrix diffusion structure applied in a backlight module adopting a dot-matrix backlight source. Background technique [0002] Currently, liquid crystal modules used in flat panel displays mostly use TFT-LCD technology. TFT-LCD is a non-active light-emitting display, usually with a white backlight module (Backlight Module) to provide uniform system brightness, and then through a color filter (Color Filter) to obtain rich color display. [0003] The current white light direct type backlight module includes a light source and an optical film set. Light-emitting diodes (LEDs) have become one of the light sources of LCD backlight modules due to their small size and low energy consumption. The light source of light-emitting diode (LED) has a Lambertian distribution, and its light distribution curve is characterized by a gradual attenuation accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/08F21S8/00
Inventor 郑俊义林韡林博瑛
Owner TPV DISPLAY TECH (XIAMEN) CO LTD
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