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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9989848 B1

PDFFull Text
Date of Patent:
Jun. 05, 2018

Filed:

Apr. 14, 2015

Photosensitive resin composition for optical waveguide, photocurable film for formation of optical waveguide core layer, optical waveguide produced by using the resin composition or the photocurable film, and hybrid flexible printed wiring board for optical/electrical transmission

Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventors:

Tomoyuki Hirayama, Ibaraki, JP;

Naoya Sugimoto, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Tina Wong

Int. Cl.
CPC ...
G02B 6/12 (2006.01); G03F 7/004 (2006.01); C08G 59/68 (2006.01); G02B 1/04 (2006.01); G03F 7/038 (2006.01); G03F 7/16 (2006.01); G03F 7/20 (2006.01); G03F 7/32 (2006.01); H05K 1/02 (2006.01); H05K 1/03 (2006.01); H05K 3/00 (2006.01); G03F 7/00 (2006.01);
U.S. Cl.
CPC ...
G03F 7/0045 (2013.01); C08G 59/68 (2013.01); G02B 1/046 (2013.01); G02B 6/12 (2013.01); G03F 7/0005 (2013.01); G03F 7/038 (2013.01); G03F 7/162 (2013.01); G03F 7/20 (2013.01); G03F 7/325 (2013.01); H05K 1/0274 (2013.01); H05K 1/0326 (2013.01); H05K 1/0393 (2013.01); H05K 3/0023 (2013.01); G02B 2006/12073 (2013.01); H05K 2201/0108 (2013.01);
Abstract

The present invention provides an optical waveguide photosensitive resin composition containing a resin component and a photoacid generator, wherein the photoacid generator has a characteristic property (x) such that an absorption limit (O—O transition energy) calculated based on the shape of an ultraviolet spectrum obtained by spectrometrically analyzing a 0.1 wt % propylene carbonate solution of the photoacid generator by means of an ultraviolet/visible spectrophotometer is 3.5 to 4.1 eV. Where an optical waveguide core layer is formed by using the inventive optical waveguide photosensitive resin composition, for example, the optical waveguide core layer has a lower loss, and is excellent in patternability and reflow resistance.

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