Invention Grant
- Patent Title: Optical waveguide-forming epoxy resin composition, optical waveguide-forming curable film, optical-transmitting flexible printed circuit, and electronic information device
- Patent Title (中): 光波导形成环氧树脂组合物，光波导形成固化膜，光传输柔性印刷电路和电子信息装置
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Application No.: US13258517Application Date: 2010-03-26
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Publication No.: US08532442B2Publication Date: 2013-09-10
- Inventor: Naoyuki Kondou , Junko Yashiro , Shinji Hashimoto , Tohru Nakashiba
- Applicant: Naoyuki Kondou , Junko Yashiro , Shinji Hashimoto , Tohru Nakashiba
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2009-077788 20090326
- International Application: PCT/JP2010/056039 WO 20100326
- International Announcement: WO2010/110495 WO 20100930
- Main IPC: G02B6/12
- IPC: G02B6/12 ; G02B6/00
Abstract:
An optical waveguide of excellent flex resistance which is to be formed on the surface of a flexible printed circuit is obtained by using an epoxy resin composition includes (A) a liquid epoxy compound, (B) a solid epoxy compound, and (C) a cationic curing initiator, wherein as the liquid epoxy compound (A), (A1) a liquid epoxy compound represented by general formula (I) below is included: (where R1 and R2 are each independently a hydrogen atom or a methyl group; R3 to R6 are each independently a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; R7 is an alkyleneoxy group or alkylene group of 1 to 15 carbons; p is 0 or 1; q is 1 to 25; r and s are 0 when p is 0, and are 1 when p is 1; and n is a positive integer which averages from 1 to 5).
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