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Diffusion sheet for backlight module

A technology of backlight module and diffuser, applied in the field of diffuser, can solve the problems of uniform coating of nano-particle layer, easy to be scratched, etc., and achieve the effect of improving rigidity, preventing brightness loss, concealing or offsetting

Active Publication Date: 2011-07-13
CCS (SHANGHAI) FUNCTIONAL FILMS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this prior art is that it is difficult to evenly coat the nanoparticle layer on the surface of the light guide plate made of hard materials, which requires chemical deposition and other methods to achieve
[0010] In other prior art, it is only limited to provide nanoparticles inside the light guide plate or inside the fine structure surface of the prism, therefore, there is still the problem of being easily scratched due to the contact between other optical sheets and the protective sheet

Method used

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  • Diffusion sheet for backlight module
  • Diffusion sheet for backlight module
  • Diffusion sheet for backlight module

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are intended to describe the implementation of the present invention in detail for those skilled in the technical field of the present invention, rather than to limit the protection scope of the present invention.

[0037] figure 2 It is a transverse cross-sectional view of a diffusion...

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Abstract

The invention relates to a diffusion sheet for a backlight module. The diffusion sheet comprises a base material layer and a diffusion layer, wherein the base material layer is made of a light-transmitting material; and the diffusion layer is laminated on the upper part of the base material layer and comprises an adhesive, nanoparticles and microparticles. Through the diffusion sheet with the structure, the rigidity of the diffusion layer can be improved so as to avoid the distortion and curling phenomena of the diffusion layer. In addition, the diffusion sheet has excellent diffusion effect according to the nanoparticle content of the diffusion layer, so that the defects of a light guide plate and an optical sheet can be effectively concealed or overcome and the luminance loss can be avoided.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a diffusion sheet used in a backlight module. Background technique [0002] In general, in order to improve the back surface of liquid crystal display devices (Liquid Crystal Display, LCD) including not only electronic light-emitting panels, notebook computer monitors, word processors, desktop computer monitors, TVs, video cameras, but also automotive and aircraft displays, etc. To illuminate the brightness of flat panel displays, backlight modules of various structures are used. The backlight module includes a light source, a light guide plate, and multiple optical sheets. The light from the light source passes through the light guide plate and multiple optical sheets and then exits to the display. [0003] figure 1 It is a schematic diagram of an existing backlight module. Such as figure 1 As shown, the backlight module includes: a light source 4; a light guide plate 5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B5/02
CPCG02B5/0226G02F1/133606G02B5/0268G02B5/0278
Inventor 金长松金青松
Owner CCS (SHANGHAI) FUNCTIONAL FILMS IND CO LTD
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