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Anti-blue-ray protective film

A technology of anti-blue light and protective film, applied in the direction of coating, etc., can solve the problems of cumbersome process, color deviation, high cost, etc., and achieve good anti-blue light effect, excellent applicability, and anti-sedimentation effect

Active Publication Date: 2019-05-21
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of blue light absorber directly added has a high degree of yellowishness. When used in high-definition electronic products, it will bring color deviation and uncomfortable eyes to the user, which seriously affects the product quality; The method of layering different refractive index films, the process is cumbersome and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 10 grams of acrylate oligomer A-848-RN [refractive index 1.53, DIC], 3 grams of indium oxide [refractive index 1.7; average particle size 60 nm], 53 grams of methyl ethyl ketone and 27 grams of Isobutyl acetate, 1.6 grams of dispersant CA 394-60S [Eastman], 1.1 grams of curing agent BL3175SN [Bayer], stirred to obtain the anti-blue light layer coating solution, ready for use.

[0035] Coating the prepared coating liquid on any optical surface of a polyethylene terephthalate (PET) film with a thickness of 250 μm, through the first curing temperature of 60 ° C, the curing time is 5 min; the second curing temperature is 90°C, curing time is 5min; the third curing temperature is 110°C, curing time is 5min; the fourth curing temperature is 150°C, curing time is 3min. Blu-ray layer.

[0036] Coating is performed on the anti-blue light layer to prepare a hardened protective layer with a thickness of 10um to obtain an anti-blue light protective film.

Embodiment 2

[0038] Add 10 grams of acrylate oligomer A-1300 [refractive index 1.50, DIC], 2.5 grams of tin oxide [refractive index 2; average particle size 50nm], 56 grams of cyclopentanone and 29 grams of Propylene glycol methyl ether, 1.3 g of dispersant CAB 171-15 [Eastman], and 0.9 g of curing agent IL1351 [Bayer] were stirred to obtain a coating solution for the anti-blue light layer, which was set aside.

[0039]Coating the prepared coating liquid on any optical surface of a triacetylcellulose (TAC) film with a thickness of 200 μm, after the first curing temperature of 60 ° C, the curing time is 4 minutes; the second curing temperature is 80 ° C, the curing time The third curing temperature is 110°C, and the curing time is 4 minutes; the fourth curing temperature is 140°C, and the curing time is 3 minutes. Thermal curing is performed under different temperature conditions to form an anti-blue light layer with a thickness of 600nm.

[0040] Coating is performed on the anti-blue light...

Embodiment 3

[0042] Add 10 grams of acrylate oligomer Miramer SC2152 [refractive index 1.58, Meiyuan Special Chemicals], 2 grams of antimony pentoxide [refractive index 2.3; average particle size is 45nm], 45 grams of isopropanol and 43 grams of butyl acetate, 1 gram of dispersant CAB 381-2.0 [Eastman], and 0.7 gram of curing agent Aradur9506 [Hunsman] were stirred to obtain an anti-blue light layer coating solution, which was set aside.

[0043] Coating the prepared coating solution on any optical surface of a triacetylcellulose (TAC) film with a thickness of 180 μm, after the first curing temperature of 55 ° C, the curing time is 3 minutes; the second curing temperature is 75 ° C, the curing time The third curing temperature is 100°C, and the curing time is 3 minutes; the fourth curing temperature is 130°C, and the curing time is 3 minutes. Thermal curing is performed under different temperature conditions to form an anti-blue light layer with a thickness of 500nm.

[0044] Coating is pe...

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Abstract

An anti-blue-ray protective film comprises a transparent substrate, an anti-blue-ray layer and a hardening protective layer, wherein the anti-blue-ray layer and the hardening protective layer are sequentially laminated; the anti-blue-ray layer is prepared by coating with a coating solution and then carrying out thermal curing, the coating solution comprises the following components in parts by weight: 2-10 parts of thermosetting resin, 0.5-3 parts of nano metal oxide, 80-98 parts of an organic solvent, 0.3-1.6 parts of a dispersing agent and 0.4-1.1 parts of a curing agent; the difference between the refractive index of the nano metal oxide and the thermosetting resin is 0.1-1.3, the viscosity of the thermosetting resin is 5000 cps-10000 cps, parameters in curing are successively as follows: in the first step, the curing temperature is 40 DEG C-60 DEG C, and the curing time is 1 min-5 min; in the second step, the curing temperature is 60 DEG C-90 DEG C, and the curing time is 1 min-5 min; in the third step, the curing temperature is 90 DEG C-110 DEG C, and the curing time is 1 min-5 min; in the fourth step, the curing temperature is 110 DEG C-150 DEG C, and the curing time is 1 min-3 min. According to the invention, an internal structure in which a high refractive index is matched with a low refractive index is formed, so that the transmittance of blue ray with the wavelength of 400 nm-450 nm is less than 40%, and a good anti-blue-ray effect is achieved.

Description

technical field [0001] The invention relates to the technical field of thin films, in particular to a protective film for electronic display that can prevent blue light damage. Background technique [0002] With the rapid development of the Internet age, people's work and life are inseparable from electronic products such as computers and mobile phones. So frequent text messages, writing emails and other forms of communication have become increasingly prominent. However, the use of electronic products will also affect people's health. For example, blue light exists in a large amount in computer monitors, fluorescent lamps, mobile phones, digital products, display screens, LEDs, etc., among which harmful blue light (400nm ~ 450nm) is a high Visible light with energy can directly penetrate the cornea and crystal, reach the macular area, accelerate the oxidation of cells in the macular area, and cause damage to the retina. Harmful blue light damages children's retinas more se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D133/04C09D7/61C09D7/65
Inventor 范义胜刘玉磊李恒王巧胡甲元
Owner HEFEI LUCKY SCI & TECH IND
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