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Thin film capable of improving brightness of brightness enhancement film

A brightness-enhancing film and luminance technology, which is applied in optics, instruments, optical components, etc., can solve the problems of increased resin cost, poor hardness and scratch resistance performance, and achieve chemical cost saving, scratch resistance improvement, high brightness effect

Inactive Publication Date: 2016-03-30
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general refractive index of UV curable resin is 1.48-1.52. To increase its refractive index, it is necessary to introduce new groups into the resin, resulting in poor hardness and scratch resistance; and with the increase of resin refractive index , the resin cost will increase exponentially

Method used

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  • Thin film capable of improving brightness of brightness enhancement film
  • Thin film capable of improving brightness of brightness enhancement film
  • Thin film capable of improving brightness of brightness enhancement film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of release layer coating solution:

[0034]

[0035] Add 45 grams of fluorine-modified UV acrylic resin HFC-1 [refractive index 1.34; resistant to coating], 5 grams of UV acrylic resin 6196-100 [15 functionality; Changxing Chemical], 5 grams of photoinitiator in the container 184 [Tianjin Tianjiao Chemical Co., Ltd.], 0.01 g of leveling agent BYK-377 [Bike], 0.5 g of silica particles with a particle size of 20 μm [Degussa], 40 g of tetrafluoroethane and 15 gram of methyl ethyl ketone, stirred to obtain the anti-adhesive layer coating liquid, stand-by.

[0036] The above-prepared coating solution was coated on one adhesive layer of a polyethylene terephthalate film [PG32B; Lucky] having a double-sided adhesive layer having a thickness of 25 μm, and the formed coating was dried at 80° C. After 2min, at 400mJ / cm 2 The amount of light was cured by ultraviolet irradiation to form a release layer with a thickness of 15 μm to obtain a film that can be used as ...

Embodiment 2

[0038] Preparation of release layer coating solution:

[0039]

[0040]

[0041] Add 37 grams of fluorine-modified UV acrylic resin HFC-1 [refractive index 1.34; resistant to coating], 8 grams of UV acrylic resin CN8000NS [6 functionality; Sartomer], 3.7 grams of photoinitiator TPO in the container [Tianjin Tianjiao Chemical Co., Ltd.], 0.15 grams of leveling agent BYK-307 [Bike], 1.8 grams of PMMA particles with a particle size of 15 μm [Sekisui Chemical], 35 grams of (perfluorohexyloxy) methane and 20 grams of ethyl acetate, stirred to obtain the anti-adhesive layer coating solution, stand-by.

[0042] The above-prepared coating solution was coated on one adhesive layer of a polyethylene terephthalate film [PG32B; Lucky] having a double-sided adhesive layer having a thickness of 75 μm, and the formed coating was dried at 80° C. After 2min, at 400mJ / cm 2 The amount of light was cured by ultraviolet irradiation to form a release layer with a thickness of 11 μm, and a f...

Embodiment 3

[0044] Preparation of release layer coating solution:

[0045]

[0046] Add 30 grams of fluorine-modified UV acrylic resin SFMA [refractive index 1.38; Sabis], 12.5 grams of UV acrylic resin CN9013NS [9 functionality; Sartomer], 2.75 grams of photoinitiator 184 [Tianjin Tianjiao Chemical Co., Ltd.], 0.26 grams of leveling agent Levaslip410 [Deqian], 2.75 grams of PBMA particles with a particle size of 11 μm [Japan Aike], 27.5 grams of trifluorohexane and 27.5 grams of toluene, stirred to obtain Anti-adhesive layer coating liquid, ready for use.

[0047] The above-prepared coating liquid was coated on one adhesive layer of a polyethylene terephthalate film [PG32B; Lucky] having a double-sided adhesive layer having a thickness of 125 μm, and the formed coating was dried at 80° C. After 2min, at 400mJ / cm 2 The amount of light was cured by ultraviolet irradiation to form a release layer with a thickness of 8 μm to obtain a film that can be used as a brightness enhancing film....

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Abstract

The invention discloses a thin film capable of improving the brightness of a brightness enhancement film. The thin film comprises a transparent substrate and connecting layers which coat two surfaces of the substrate; one of the connecting layers is provided with an anti-sticking layer; the refractive index of the anti-sticking layer ranges from 1.38 to 1.48; and micro-particles 4 of which the particle size ranges from 2 microns to 20 microns are randomly distributed in the anti-sticking layer. According to the thin film of the invention, the low-refractive index anti-sticking layer is adopted, when a brightness enhancement film is produced on the thin film, a prism layer can be effectively protected, and higher brightness can be realized. The thin film is widely applied to the field of brightness enhancement films of various kinds of structures.

Description

technical field [0001] The invention relates to the field of optical films, in particular to a film capable of improving the luminance of a brightness enhancing film. Background technique [0002] The backlight module used for liquid crystal display is composed of a variety of optical films. In the general structure, from bottom to top (based on the direction of the liquid crystal screen), it includes reflective film, diffusion film, brightness enhancement film, and brightness enhancement film. , Diffusion film, the role of the combination of these films is to use the light energy in the backlight module with maximum efficiency, utilize the light and concentrate it on the direction of the user with maximum efficiency. A common brightness enhancement film is composed of a flat substrate and multiple prisms that can gather light. [0003] Brightness enhancement film (such as figure 2 ) In order to be able to roll normally during the production process, an anti-adhesive layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B1/14
CPCG02B5/0231G02B5/0226
Inventor 刘玉磊王辉李恒张强万金龙程晓静朱用国
Owner HEFEI LUCKY SCI & TECH IND