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High-brightness and wide-viewing-angle brightness enhancing film

A brightness-enhancing film and wide viewing angle technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of insufficient brightness and small viewing angle of large-size displays, achieve high scratch resistance, solve serious energy consumption, and high brightness performance effect

Active Publication Date: 2017-09-19
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of insufficient brightness and small viewing angle of large-size displays, the present invention provides a brightness-enhancing film with high luminance and wide viewing angle

Method used

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  • High-brightness and wide-viewing-angle brightness enhancing film

Examples

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Effect test

preparation example Construction

[0052] The preparation method of the high-brightness wide viewing angle brightness enhancement film provided by the present invention comprises the following steps:

[0053] (1) Mix solvent-free UV-curable polyester acrylic resin glue and inorganic oxide particles evenly;

[0054] (2) coating the mixture obtained in step (1) on one surface of the substrate layer by means of a structural stick, embossing the microstructure, and curing the microstructure under UV light to obtain a prism structure layer;

[0055] (3) Mix solvent-based UV-curable resin glue, acrylic particles and solvents to prepare a back coating solution;

[0056] (4) Coating the back coating liquid on the other surface of the substrate layer by an anilox roller, and curing the back coating under UV light after baking in an oven.

[0057] The test method of the brightness enhancing film provided by the invention is as follows:

[0058] 1. Brightness enhancement film luminance: BM-7A luminance meter is used, an...

Embodiment 1

[0062] The invention provides a high-brightness and wide-angle brightness enhancement film, wherein the brightness enhancement film comprises a brightness enhancement structure layer, a base material layer and a back coating in sequence; the brightness enhancement structure layer is a prism structure, and the transverse width of the prism structure The cross section is an isosceles triangle, and the top angle of the isosceles triangle is a circular arc. Among them, the height of the isosceles triangle is 25 μm, the apex angle of the isosceles triangle is 120°, and the radius of the arc is 2 μm; the brightening structure layer includes inorganic oxide particles TiO 2 ,TiO 2 The particle size is 150nm, and its content is 3% of the polyester acrylic resin. The substrate layer is PET with a thickness of 188um. The back coating includes 19% of solvent-based UV-curable acrylic resin glue, 1% of acrylic (polymethyl methacrylate) particles, the particle size of acrylic particles is ...

Embodiment 2

[0064] Brightness enhancing film as provided in Example 1. Among them, the height of the isosceles triangle is 25 μm, the apex angle of the isosceles triangle is 120°, and the arc radius is 3 μm; the brightening structure layer includes inorganic oxide particles TiO 2 ,TiO 2 The particle size is 150nm, and its content is 3% of the polyester acrylic resin. The substrate layer is PET with a thickness of 188um. The back coating includes 19% of solvent-based UV-curable acrylic resin glue, 1% of acrylic (polymethyl methacrylate) particles, the particle size of acrylic particles is 5 μm, and 80% of solvents, including butanone, toluene, propylene glycol methyl ether, The mass ratio is 1:1:2, and the mixed back coating is coated on the substrate layer by an anilox roller.

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Abstract

The present invention relates to a brightness enhancing film applied to the backlight source of a liquid crystal display and particularly relates to a high-brightness and wide-viewing-angle brightness enhancing film. The brightness enhancing film solves the problem in the prior art that a large-size display is insufficient in brightness and small in viewing angle. The high-brightness and wide-viewing-angle brightness enhancing film sequentially comprises a brightness-enhancing structure layer, a substrate layer and a back coating layer. The brightness enhancing film is higher in brightness, highly scratch-resistant, and wide in viewing angle. When the brightness enhancing film applied to a backlight module, the problems of a display, such as serious energy consumption, insufficient brightness, small viewing angle and the like, can be effectively solved.

Description

technical field [0001] The invention relates to a brightness enhancement film used in a backlight source in a liquid crystal display, in particular to a brightness enhancement film with high luminance and wide viewing angle. Background technique [0002] Brightness enhancement film is one of the most important optical films widely used in backlight modules of liquid crystal displays. The main function of brightness enhancement film is to concentrate the light from all directions emitted from the light source to the front, thereby improving light utilization and reducing light loss. , so as to increase the brightness of the backlight or reduce power consumption. Its brightening principle is to use its special triangular structure. When the light scattered by the diffuser reaches the surface of the structure, the light that is smaller than the key angle of refraction of the light enhancement film material is emitted through the structural surface, and the light that is larger ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G02F1/13357
CPCG02B5/045G02F1/133606G02F1/133607
Inventor 金亚东熊斐
Owner NINGBO CHANGYANG TECH
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