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Anti-newton ring film, method for producing same, and use thereof

An anti-Newton ring film and Newton ring technology, which is applied in optics, instruments, electrical digital data processing, etc., can solve the problems of shallow bumps and the inability to fully suppress the Newton rings of the resistive film touch panel, so as to improve hardness and transparency performance, durability improvement effect

Active Publication Date: 2020-12-22
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, the films of Patent Documents 2 and 3 are intended to prevent watermarking on capacitive touch panels, and cannot Sufficient suppression of Newton rings in resistive touch panels

Method used

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  • Anti-newton ring film, method for producing same, and use thereof
  • Anti-newton ring film, method for producing same, and use thereof
  • Anti-newton ring film, method for producing same, and use thereof

Examples

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Embodiment

[0148] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. The raw materials used in Examples and Comparative Examples are as follows, and the anti-Newton ring films obtained in Examples and Comparative Examples were evaluated by the following items.

[0149] [raw material]

[0150] Acrylic resin having a polymerizable group in the side chain (ACAZ322M): obtained by adding 3,4-epoxycyclohexenylmethyl acrylate to a part of the carboxyl group of (meth)acrylic acid-(meth)acrylate copolymer The compound; manufactured by Daicel Co., Ltd., trade name "CYCLOMER P (ACA) Z322M", solid content 40% by weight, solvent: 1-methoxy-2-propanol (MMPG) (boiling point 119°C)

[0151] Cellulose acetate propionate (CAP): degree of acetylation = 2.5%, degree of propionylation = 46%, number average molecular weight in terms of polystyrene: 75,000; manufactured by EASTMAN, trade name "CAP-482-20"

[0152]...

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Abstract

According to the present invention, a liquid phase containing one or more polymers, one or more curable resin precursors, a solvent, and silica nanoparticles having a polymerizable group is phase-separated by spinodal decomposition following evaporation of the solvent to form a phase-separated structure, and the curable resin precursor is cured to form an anti-Newton ring layer of which the surface has an arithmetic average surface roughness Ra of at least 60 nm, an average concavo-convex spacing Sm of at least 35 [mu]m, and a kurtosis Rku of at least 3. This anti-Newton ring layer contains one or more polymers, one or more cured curable resin precursors, and silica nanoparticles having a polymerizable group, and may have a phase-separated structure. An anti-Newton ring film including theanti-Newton ring layer may have a haze of 9% or less. The anti-Newton ring film can suppress the generation of Newton rings in resistive touch panels, and also has high transparency.

Description

technical field [0001] The present invention relates to a film for preventing or suppressing Newton rings generated in a resistive film type touch panel, its production method, use method and application. Background technique [0002] In recent years, with the development of electronic displays as human-machine interfaces, interactive input systems have been popularized. Among them, devices that integrate touch panels (coordinate input devices) and displays have been widely used in ATMs (automatic storage / cash machine), commodity management, outworking (diplomacy, sales), guide display, entertainment equipment, etc. Lightweight and thin displays such as liquid crystal displays have the advantage of being able to omit a keyboard, so the use of touch panels in mobile devices has also been increasing. Depending on the position detection method, touch panels can be classified into optical methods, ultrasonic methods, electrostatic capacitance methods, and resistive film method...

Claims

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Application Information

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IPC IPC(8): G02B5/02B32B3/30B32B7/023G02B5/00G06F3/041G06F3/045
CPCG02B5/00G02B5/02B32B7/023B32B3/30G06F3/045G06F3/041
Inventor 横山将史
Owner DAICEL CHEM IND LTD
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