Protective membrane of optical material for display device
A technology for display devices and optical materials, applied in optics, optical components, optical/shielding devices, etc., can solve problems such as pollution and deterioration of the appearance of AR films
Inactive Publication Date: 2012-05-02
TORAY ADVANCED MATERIALS KOREA
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the reliability inspection of heat resistance and moisture resistance is performed on a protective film with such air bubbles and wrinkles, the appearance of the AR film will be deteriorated and stained due to traces caused by air bubbles and wrinkles
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0042] An adhesive composition (gel fraction 95%) serving as a protective film, comprising an epoxy hardener and an acrylic copolymer resin (weight average molecular weight 1,270,000), was applied at a thickness of 10 μm on a polypropylene substrate. , molecular weight distribution is 2.3, glass transition temperature -37°C), and then the obtained film is aged to prepare a protective film.
Embodiment 2
[0044] An adhesive composition (gel fraction 93%) serving as a protective film, comprising an amino hardener and an acrylic copolymer resin (weight average molecular weight 970,000, Molecular weight distribution is 2.2, glass transition temperature -36° C.), and the obtained film is aged to prepare a protective film.
Embodiment 3
[0046] An adhesive composition (gel fraction 96%) serving as a protective film, comprising an aziridine hardener and an acrylic copolymer resin (weight average molecular weight), was applied on a polypropylene substrate at a thickness of 10 μm. 680,000, a molecular weight distribution of 2.9, a glass transition temperature of -33°C), and then aging the obtained film to prepare a protective film.
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Abstract
The invention relates to a protective film for displaying optical material in the device, more specifically, the invention relates to a protective film, for reducing or almost eliminating the problems of the presence of minute smear, wherein the presence of the minute smear is caused by bad thermal endurance and dampness endurance of the adhesive layer in the protective layer, which is transferred to a base of the optical materials of a display, accordingly, the reduction of the anti soil ability is improved. In the protective film (wherein the adhesive composition is applied to the base plate) of the optical materials in the display, the protective layer is characterized in that, the adhesive composition comprises crylic acid copolymer resin of 1000 amount by weight and hardener of 0.1-20 amount by weight. The weight-average molecular weight of crylic acid copolymer resin is 300,000 to 2,000,000, and molecular weight distribution is 1 to 4. Preferably, the invention is characterized in that, the glass-transition temperature of crylic acid copolymer resin is -50 DEG C to -20 DEG C. Preferably, the invention is characterized in that, the degree of hardening (gel fraction) of the adhesive composition is 60% to 99%. The invention is characterized that isocyanate is not used as hardener.
Description
technical field [0001] The present invention relates to a protective film for an optical material of a display device. More particularly, the present invention relates to a protective film which minimizes or nearly eliminates the problem of microsmudges and improves anti-smudge performance degradation due to adhesives in the protective film. The heat resistance and moisture resistance of the layer are poor, so the adhesive layer in the protective film is transferred to the substrate of the optical material layer of the display device. Background technique [0002] In general, resistance to plasma display devices in processing or equipping optical sheets for optical purposes such as displays for plasma display panels (PDPs), computer monitors, LCD TVs, car navigation systems, cellular phones, etc. In the case of reflective film (AR film)), a surface protective film is laminated on one side of the sheet to prevent damage or stains on the sheet, an adhesive is applied on the p...
Claims
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IPC IPC(8): C09J133/20C09J11/06G02B1/10C08J5/18G02B5/20H01J11/44
CPCC08J5/18C08J2323/06C08J2323/12C08J2367/03C08L23/06C08L23/12C08L67/03C08L2203/16C09J11/06C09J133/06G02B1/04
Inventor 金相弼李文馥徐基奉严相烈崔圭夏崔淳旭
Owner TORAY ADVANCED MATERIALS KOREA