Invention Grant
- Patent Title: Optical film
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Application No.: US16573260Application Date: 2019-09-17
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Publication No.: US11550179B2Publication Date: 2023-01-10
- Inventor: Kazuki Daimatsu , Hitoshi Fukui , Masayoshi Karasawa
- Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
- Applicant Address: JP Tokyo
- Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2018-184777 20180928,JPJP2019-093099 20190516
- Main IPC: G02F1/1333
- IPC: G02F1/1333 ; C08L79/08 ; G02F1/1335 ; G02B1/10 ; G02B5/30

Abstract:
To provide an optical film having excellent visibility in the wide angle direction. An optical film including at least one resin selected from the group consisting of a polyimide-based resin and a polyamide-based resin, wherein the optical film satisfies Formula (1): 0≤Ts≤0.35 (1) wherein Ts represents a scattered light ratio (%) and is defined as Ts=Td/Tt×100, Td and Tt represent a diffuse light transmittance (%) and a total light transmittance (%), measured in accordance with JIS K-7136, respectively.
Information query
IPC分类: