Invention Grant
- Patent Title: Anti-Newton ring film, and manufacturing method and use thereof
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Application No.: US16961526Application Date: 2019-02-15
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Publication No.: US11947136B2Publication Date: 2024-04-02
- Inventor: Masashi Yokoyama
- Applicant: DAICEL CORPORATION
- Applicant Address: JP Osaka
- Assignee: DAICEL CORPORATION
- Current Assignee: DAICEL CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP 18058876 2018.03.26
- International Application: PCT/JP2019/005461 2019.02.15
- International Announcement: WO2019/187746A 2019.10.03
- Date entered country: 2020-07-10
- Main IPC: G02B5/02
- IPC: G02B5/02 ; C08F265/06 ; C08J5/18 ; G02B1/04 ; G06F3/045

Abstract:
The anti-Newton ring film of the present invention is manufactured by subjecting a liquid phase containing one or a plurality of polymers, one or a plurality of curable resin precursors, and a solvent to phase separation through spinodal decomposition in association with evaporation of the solvent to thereby form a phase-separated structure, and then curing the curable resin precursor to form an anti-Newton ring layer having an arithmetic mean roughness Ra of 30 nm or less. This film may have a parallel light transmittance of 90% or greater, a haze of 3% or less, and a transmission image clarity of 90% or higher as measured by an image clarity meter using an optical comb with a width of 0.5 mm. The anti-Newton ring layer may contain the polymer and the curable resin precursor at a ratio (weight ratio) of from 1/99 to 60/40. This film can effectively suppress the occurrence of a Newton's ring in a resistive touch screen, and can suppress glare even in a high-definition LCD and an organic EL display.
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