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Efficient diffuse reflection film and preparing method thereof

A technology of reflective film and diffuse reflection, applied in the field of reflective film, can solve the problems of large distance between LED lamp and diffuser plate, no edge-lit backlight module, thick backlight cavity, etc., to reduce the light mixing distance, low surface The effect of glossiness and good diffuse reflection

Active Publication Date: 2014-08-06
NINGBO DXC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain a uniform surface light source, the backlight cavity of the direct-type backlight module is required to be thicker, and the distance between the LED lamp and the diffuser plate is relatively large (that is, a certain light mixing distance is required to achieve a uniform surface light source)
If the direct-type backlight module does not mix enough light, there will be mura (spot) quality problems
In addition, the direct-lit backlight module does not have the thin feature of the edge-lit backlight module.

Method used

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  • Efficient diffuse reflection film and preparing method thereof
  • Efficient diffuse reflection film and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] refer to figure 1 , a high-efficiency diffuse reflective reflective film, including a reflective film body 1, microbubbles 2 are distributed in the reflective film body 1, an anti-adhesion layer 3 is provided on the back of the reflective film body 1, and the reflective film body 1 is provided with a diffuse reflection coating 4 on the front;

[0070] The reflective film body is composed of the following components:

[0071] Polyethylene terephthalate: 100 parts by mass;

[0072] Titanium dioxide particles: 10 parts by mass, with a particle size within the range of 1 to 5 μm;

[0073] Polyethylene glycol as dispersion aid: 1 mass part;

[0074] Poly 4-methyl-1-pentene: 15 parts by mass;

[0075] Benzotriazole ultraviolet absorber: 3 parts by mass;

[0076] The anti-blocking layer consists of the following components:

[0077] Polyethylene terephthalate: 100 parts by mass;

[0078] Silica particles: 2 parts by mass, with a particle size within the range of 1 to 4 ...

Embodiment 2

[0098] refer to figure 1 , a high-efficiency diffuse reflective reflective film, including a reflective film body 1, microbubbles 2 are distributed in the reflective film body 1, an anti-adhesion layer 3 is provided on the back of the reflective film body 1, and the reflective film body 1 is provided with a diffuse reflection coating 4 on the front;

[0099] The reflective film body is composed of the following components:

[0100] Polyethylene terephthalate: 100 parts by mass;

[0101] Titanium dioxide particles: 1 part by mass, with a particle size within the range of 1-5 μm;

[0102] Polyethylene glycol as dispersion aid: 1.5 parts by mass;

[0103] Poly 4-methyl-1-pentene: 10 parts by mass;

[0104] Benzotriazole ultraviolet absorber: 0.1 parts by mass;

[0105] The anti-blocking layer consists of the following components:

[0106] Polyethylene terephthalate: 100 parts by mass;

[0107] Silica particles: 0.5 parts by mass, with a particle size within the range of 1 ...

Embodiment 3

[0127] refer to figure 1 , a high-efficiency diffuse reflective reflective film, including a reflective film body 1, microbubbles 2 are distributed in the reflective film body 1, an anti-adhesion layer 3 is provided on the back of the reflective film body 1, and the reflective film body 1 is provided with a diffuse reflection coating 4 on the front;

[0128] The reflective film body is composed of the following components:

[0129] Polyethylene terephthalate: 100 parts by mass;

[0130] Titanium dioxide particles: 5 parts by mass, with a particle size within the range of 1 to 5 μm;

[0131] Polyethylene glycol as dispersing aid: 0.3 parts by mass;

[0132] Poly 4-methyl-1-pentene: 20 parts by mass;

[0133] Benzotriazole ultraviolet absorber: 1 mass part;

[0134] The anti-blocking layer consists of the following components:

[0135] Polyethylene terephthalate: 100 parts by mass;

[0136] Silica particles: 0.1 parts by mass, with a particle size within the range of 1 to...

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Abstract

An efficient diffuse reflection film comprises a reflection film body, wherein microbubbles are distributed in the reflection film body provided with a diffuse reflection coating; the diffuse reflection coating is composed of, by mass, 20 parts of butanone, 12 parts of ethyl acetate, 10 parts of acrylate resin, 1 part of isocyanate, 1-5 parts of diffusion particles with the particle diameter ranging from 20 microns to 50 microns, and 0.5-5 parts of extinction powder. A preparing method comprises the steps: A, preparing master batches of the reflection film body; B, preparing master batches of an anti-adhesive layer; C, preparing a bidirectional tension film; and D, preparing the diffuse reflection coating and performing coating. The efficient diffuse reflection white film has extremely low surface gloss and excellent diffuse reflectivity, and therefore the reflection performance is extremely good.

Description

technical field [0001] The invention relates to a reflection film and a preparation method of the reflection film. Background technique [0002] Liquid Crystal Display (LCD, Liquid Crystal Display) has become the most common display technology today. Because LCD has the advantages of environmental protection, low energy consumption, low radiation, soft picture, etc., LCD will be the mainstream display technology in the next few decades. The LCD is a non-luminescent display device, which requires the backlight module to achieve the display function, so the performance of the backlight module will directly affect the image quality of the LCD. The main components of the backlight module include: light source, light guide plate, and various optical films. [0003] At present, LCD backlight modules can be divided into side-light type and direct-light type according to the distribution position of the light source. Compared with the side-light type, the direct-type backlight mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08G02B5/02C08L67/02C08L23/20C08K3/22C09D167/02C09D133/04C09D7/12C08J7/04
Inventor 罗培栋江绍钏樊华伟靳钊
Owner NINGBO DXC NEW MATERIAL TECH
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