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Two-way stretching light diffusion film and preparation method thereof

A light-diffusing film and biaxial stretching technology, applied in optics, nonlinear optics, diffuser elements, etc., can solve problems such as potential safety hazards and environmental damage from organic solvents, and achieve human and environmental health and environmental protection, not easy to warp and heat High effect of shrinkage and dimensional stability

Active Publication Date: 2014-01-22
NINGBO DXC NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation cost of thermal curing method is lower, but the organic solvent will cause certain harm to the environment and the practitioners; the ultraviolet curing method has the characteristics of fast production speed, but for the practitioners, there may be certain safety hazards in the use of ultraviolet curing process

Method used

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  • Two-way stretching light diffusion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , a biaxially stretched light diffusion film, the biaxially stretched light diffusion film is composed of a diffusion layer 1, a support layer 2 and an anti-adhesion layer 3, the diffusion layer 1 covers the upper surface of the support layer 2, the The anti-adhesion layer 3 is covered on the lower surface of the support layer 2;

[0030] The support layer is PET; the diffusion layer is composed of the following components:

[0031] PET: 100 parts by mass;

[0032] Cationic antistatic agent: 0.01 parts by mass;

[0033] The floating series model produced by 3M Company (Minnesota Mining and Manufacturing Company) is the glass microsphere of H50 / 10000: 1.5 parts by mass;

[0034] Described anti-adhesion layer is made up of following components:

[0035] PET: 100 parts by mass;

[0036] Silica particles: 0.8 parts by mass;

[0037] Cationic antistatic agent: 0.1 parts by mass.

[0038] In this embodiment, the particle diameter of the glass microsph...

Embodiment 2

[0047] refer to figure 1 , a biaxially stretched light diffusion film, the biaxially stretched light diffusion film is composed of a diffusion layer 1, a support layer 2 and an anti-adhesion layer 3, the diffusion layer 1 covers the upper surface of the support layer 2, the The anti-adhesion layer 3 is covered on the lower surface of the support layer 2;

[0048] The support layer is PET; the diffusion layer is composed of the following components:

[0049] PET: 100 parts by mass;

[0050] Anionic antistatic agent: 0.8 parts by mass;

[0051] Glass beads of the floating series model H50 / 10000 produced by 3M: 1.5 parts by mass;

[0052] Described anti-adhesion layer is made up of following components:

[0053] PET: 100 parts by mass;

[0054] Silica particles: 0.08 parts by mass;

[0055] Anionic antistatic agent: 0.8 parts by mass.

[0056] In this embodiment, the particle diameter of the glass microspheres is 1-10 μm, and the particle diameter of the silicon dioxide pa...

Embodiment 3

[0065] refer to figure 1 , a biaxially stretched light diffusion film, the biaxially stretched light diffusion film is composed of a diffusion layer 1, a support layer 2 and an anti-adhesion layer 3, the diffusion layer 1 covers the upper surface of the support layer 2, the The anti-adhesion layer 3 is covered on the lower surface of the support layer 2;

[0066] The support layer is PET; the diffusion layer is composed of the following components:

[0067] PET: 100 parts by mass;

[0068] Nonionic antistatic agent: 1.5 parts by mass;

[0069] Glass beads of the floating series model H50 / 10000 produced by 3M: 0.8 parts by mass;

[0070] Described anti-adhesion layer is made up of following components:

[0071] PET: 100 parts by mass;

[0072] Silica particles: 0.2 parts by mass;

[0073] Nonionic antistatic agent: 1 part by mass.

[0074] In this embodiment, the particle diameter of the glass microspheres is 30-40 μm, and the particle diameter of the silicon dioxide par...

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Abstract

The invention provides a two-way stretching light diffusion film. The two-way stretching light diffusion film is characterized by comprising a diffusion layer, a supporting layer and an anti-adhesion layer, wherein the diffusion layer covers the upper surface of the supporting layer; the anti-adhesion layer covers the lower surface of the supporting layer; the supporting layer is made of PET (polyethylene glycol terephthalate); the diffusion layer consists of PET, an anti-static agent and glass beads; the anti-adhesion layer consists of PET, silicon dioxide particles and an anti-static agent. A manufacturing method comprises the following steps of (A) preparing diffusion master particles; (B) preparing anti-adhesion master particles; (C) preparing the diffusion film: co-extrusion, longitudinal stretching and horizontal stretching. The two-way stretching light diffusion film provided by the invention has the advantages that due to no obvious concave-convex structure on the surface of the light diffusion film, no damage is caused to a prismatic lens and other components of a backlight module.

Description

(1) Technical field [0001] The invention relates to a light diffusion film and a preparation method of the light diffusion film. (2) Background technology [0002] A 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-luminous display device, which needs a backlight to achieve the display function, so the performance of the backlight will directly affect the image quality of the LCD. [0003] The main components of the backlight system include: light source, light guide plate, and various optical films. At present, there are mainly three types of light sources: EL, CCFL and LED, which can be divided into side-light type and direct-light type according to the different distribution positions of the light source. With...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02F1/13357
Inventor 罗培栋江绍钏樊华伟
Owner NINGBO DXC NEW MATERIAL TECH
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