Optical composite film and preparation method thereof

A technology of optical composite film and diffusion film, which is applied in the field of optical materials, can solve the problems of low production efficiency and large batch-to-batch differences, and achieve the effects of high production efficiency, low cost and improved yield

Active Publication Date: 2018-11-27
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide an optical composite film, which integrates various optical films into one, has the multi-functional feature of all-in-one, can meet the optical requirements of the backlight assembly, and solves the problems caused by multiple laminations. Large batch-to-batch differences and low production efficiency

Method used

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  • Optical composite film and preparation method thereof
  • Optical composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as figure 1 As shown, an optical composite film comprises from bottom to top:

[0084] Diffusion membrane 1,

[0085] a prism layer 2,

[0086] DBEF layer 3,

[0087] And the PSA layer 4 containing particles inside.

[0088] Both the diffusion film 1 and the prism layer 2 have a thickness of 60 μm.

[0089] The optical composite film is composed of four layers of optical films and integrates multiple functions.

[0090] Every two layers are bonded by polyurethane glue.

[0091] Among them, the diffusion film 1 has the function of structural diffusion, which adopts a combination of a pillar-shaped structure (ie, the prism layer 2) and sandblasting on the surface of the pillars to form a certain roughness, thereby improving the diffusion effect and reducing the luminance. Specifically, the diffusion film 1 has a prism structure, and there is a concave-convex structure imitating a diffusion structure between the prism peak structures, and the Rz is about 30um. ...

Embodiment 2

[0102] Such as figure 2 As shown, an optical composite film comprises from bottom to top:

[0103] Diffusion membrane 1,

[0104] two prism layers 2,

[0105] DBEF layer 3,

[0106] And the PSA layer 4 containing particles inside.

[0107] Both the diffusion film 1 and the prism layer 2 have a thickness of 60 μm.

[0108] The optical composite film is composed of four layers of optical films and integrates multiple functions.

[0109] Every two layers are bonded by polyurethane glue.

[0110] Among them, the diffusion film 1 has the function of structural diffusion, which adopts a combination of a pillar-shaped structure (ie, the prism layer 2) and sandblasting on the surface of the pillars to form a certain roughness, thereby improving the diffusion effect and reducing the luminance. Specifically, the diffusion film 1 has a prism structure, and there is a concave-convex structure imitating a diffusion structure between the prism peak structures, and the Rz is about 30u...

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Abstract

The invention provides an optical composite film and a preparation method thereof. The optical composite film comprises a diffusion film, one or more prism layers, a DBEF (Dual Brightness EnhancementFilm) layer and a PSA layer from bottom to top. According to the optical composite film provided by the invention, various optical films are integrated, so that the composite film has an all-in-one multifunctional characteristic; the optical composite film can meet optical requirements of a backlight assembly and the problems of great in-batch difference, low production efficiency and the like, caused by a plurality of times of adhesion, are solved.

Description

technical field [0001] The invention relates to the field of optical materials, in particular to an optical composite film and a preparation method thereof. Background technique [0002] Generally speaking, the main structure of a liquid crystal display includes two parts: a panel and a backlight assembly. Among them, the panel part includes, for example, indium tin oxide conductive glass, liquid crystal, alignment film, color filter, and driver integrated circuit, etc.; and the backlight component includes, for example, lamp tubes, light guide plates, and various optical films. [0003] Among them, the optical film usually includes a variety of films, and different films have different functions, such as brightness enhancement and diffusion. The multilayer film can enhance the optical effect after stacking, but it brings difficulties to production. In the prior art, each independent optical film has only partial functions and cannot meet the performance requirements of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B5/04G02B5/30G02F1/13357
CPCG02B5/0226G02B5/0231G02B5/0242G02B5/045G02B5/30G02F1/133606G02F1/13362G02F1/133607
Inventor 季德维
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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