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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 8846828 B1

PDFFull Text
Date of Patent:
Sep. 30, 2014

Filed:

Jun. 11, 2009

Curable organopolysiloxane composition and semiconductor device

Applicants:

Takashi Sagawa, Ichihara, JP;

Makoto Yoshitake, Funabashi, JP;

Inventors:

Takashi Sagawa, Ichihara, JP;

Makoto Yoshitake, Funabashi, JP;

Assignee:

Dow Corning Toray Co. Ltd., Chiyoda-Ku, Tokyo, JP;

Attorney:

Howard & Howard Attorneys PLLC

Primary Examiner:

Randy Gulakowski

Assistant Examiner:

Christopher M Rodd

Int. Cl.
CPC ...
C08G 77/38 (2006.01); C08L 83/04 (2006.01); C08L 83/05 (2006.01); C08L 83/07 (2006.01); C08K 5/54 (2006.01); G02B 1/04 (2006.01); H01L 23/29 (2006.01); C08G 77/12 (2006.01); C08G 77/20 (2006.01); H01L 33/48 (2010.01); C08G 77/00 (2006.01); H01L 33/56 (2010.01);
U.S. Cl.
CPC ...
H01L 23/296 (2013.01); C08G 77/12 (2013.01); H01L 2924/12044 (2013.01); C08G 77/20 (2013.01); H01L 33/483 (2013.01); C08L 83/04 (2013.01); C08G 77/70 (2013.01); H01L 33/56 (2013.01);
Abstract

A curable organopolysiloxane composition comprising: (A) a branched-chain organopolysiloxane that contains in one molecule at least three alkenyl groups and at least 30 mole % of all silicon-bonded organic groups in the form of aryl groups; (B) a linear-chain organopolysiloxane that contains aryl groups and has both molecular terminals capped with diorganohydrogensiloxy groups; (C) a branched-chain organopolysiloxane that contains in one molecule at least three diorganohydrogensiloxy groups and at least 15 mole % of all silicon-bonded organic groups in the form of aryl groups; and (D) a hydrosilylation catalyst. The composition is capable of forming a cured body that has a high index of refraction and strong adhesion to substrates.

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