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Scratch-resistant diffusion film, backlight module set and liquid crystal display

A technology of backlight module and diffusion film, which is applied in the field of diffusion film, can solve the problem that the optical diffusion film is difficult to take into account the scratch resistance of other contact components, and achieve the effect of not easy to expand and deform, high sphericity, and good solvent resistance

Inactive Publication Date: 2018-11-02
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, the existing optical diffusion film has the problem that it is difficult to take into account the anti-scratch of other contact components and ensure that it is not easy to be scratched

Method used

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  • Scratch-resistant diffusion film, backlight module set and liquid crystal display
  • Scratch-resistant diffusion film, backlight module set and liquid crystal display
  • Scratch-resistant diffusion film, backlight module set and liquid crystal display

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preparation example Construction

[0041] The preparation process of the back coating of the anti-scratch diffusion film is as follows: After the semi-finished product of the diffusion film has been unwound, it is cleaned by a sticky roller and then to the area of ​​the coating head, the second acrylic resin, the second diffusion particles, the second After the coating solution mixed with the second curing agent is coated on the other side of the substrate with a micro-gravure roller with a mesh number of 110, the solvent is evaporated in a drying oven, and the coating solution is cured on the other side of the substrate to form a back coating , and then through winding to obtain the finished diffusion film. The length of the oven is 20-60m, preferably a five-section sectional oven, the temperature setting range of the oven is 70-110°C, and the production speed is 15-35m / min.

[0042] The present invention also provides a backlight module and a liquid crystal display, such as figure 2 As shown, the backlight ...

Embodiment 1

[0045] A kind of anti-scratch diffusion film 1, such as figure 1 As shown, it includes a substrate 10, a diffusion layer 20 disposed on one side of the substrate, and a backcoat layer 30 disposed on the other side of the substrate. The diffusion layer is formed by coating and curing the coating solution of the following components on the surface of the substrate. The coating liquid components are: 22 parts by weight of acrylic resin AA-911 (manufactured by Aekyung Chemical, TG point about 40°C), 3.2 parts by weight of 5 μm polydisperse PMMA particles (CV value 40%), 0.5 parts by weight of 15 μm Medium dispersed PMMA particles (CV value 30%), 12 parts by weight of ethyl acetate, 18 parts by weight of butyl acetate, 1.3 parts by weight of isocyanate curing agent, 0.2 parts by weight of dispersant BYK-111, 0.05 parts by weight of fluid Leveling agent BYK333. Wherein, the particle strength of the PMMA diffusion particle composition is 20 MPa, the degree of crosslinking is 25%, t...

Embodiment 2

[0047] An anti-scratch diffusion film comprises a base material, a diffusion layer arranged on one side of the base material and a back coating layer arranged on the other side of the base material. The diffusion layer is formed by coating and curing the coating solution of the following components on the surface of the substrate. The coating solution components are: 48 parts by weight of acrylic resin AA-911 (manufactured by Aekyung Chemical, TG point about 40°C), 5.0 parts by weight of 5 μm polydisperse PMMA particles (CV value 45%), 4.1 parts by weight of 10 μm Monodisperse PMMA particle (CV value 3%), disperse PMMA particle (CV value 15%) in the 20 μm of 2 weight parts, the ethyl acetate of 20 weight parts, the butyl acetate of 30 weight parts, the isocyanate solidifying agent of 2.3 weight parts , 0.2 parts by weight of dispersant BYK-111, 0.05 parts by weight of leveling agent BYK333. Wherein, the particle strength of the PMMA diffusion particle composition is 24 MPa, t...

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Abstract

The invention discloses a scratch-resistant diffusion film, a backlight module set and a liquid crystal display. The scratch-resistant diffusion film comprises a base material, a diffusion layer disposed on one side of the base material, and a back coating disposed on the other side of the base material; the diffusion layer includes first acrylic resin, first diffusion particles and a first curingagent; the vitrification conversion temperature of the first acrylic resin is lower than 50 DEG C; the particle diameter of the first diffusion particles ranges from 5 to 20 microns; the first diffusion particles comprise at least two kinds of polymethyl methacrylate with different particle sizes; the polymethyl methacrylate with the largest particle size is medium dispersed particles; and the value of the variation coefficient of the particle diameter of the medium dispersed particles ranges from 15% to 30%. With the scratch-resistant diffusion film of the invention adopted, a component in contact with the scratch-resistant diffusion film can be prevented from being scratched, and it can be also ensured that the scratch-resistant diffusion film itself has little possibility of being scratched. The scratch-resistant performance of the scratch-resistant diffusion film is excellent; and the scratch-resistant diffusion film can be applied to a backlight module sset and a liquid crystal display.

Description

technical field [0001] The invention belongs to the field of diffusion films, and in particular relates to a scratch-resistant diffusion film, a backlight module and a liquid crystal display. Background technique [0002] Liquid Crystal Display technology (LCD, Liquid Crystal Display) has become the most common display technology in today's society due to its advantages such as right-angle display, low power consumption, and small size. The main components of a liquid crystal display include: a backlight unit (BLU for short), a liquid crystal panel (Panel), peripheral circuits such as control and drive, connectors, and packaging materials. [0003] The structure of the panel is to place a liquid crystal in the middle of two parallel glasses, and then paste a polarizing film (Polarizing Film, hereinafter referred to as POL) on the front of the upper glass and the bottom of the lower glass respectively. The POL on the front of the upper glass is called the upper POL. The POL ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02F1/13357
Inventor 张琼
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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