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.:
Date of Patent:
Feb. 21, 2012
Filed:
Jul. 31, 2009
Katsuhiko Kamiya, Ibaraki, JP;
Takeshi Matsumura, Ibaraki, JP;
Shuuhei Murata, Ibaraki, JP;
Hironao Ootake, Ibaraki, JP;
Katsuhiko Kamiya, Ibaraki, JP;
Takeshi Matsumura, Ibaraki, JP;
Shuuhei Murata, Ibaraki, JP;
Hironao Ootake, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A dicing die-bonding film having a pressure-sensitive adhesive layer on a base and a die-bonding film on the pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer comprising an acrylic polymer comprising acrylic ester A represented by CH═CHCOOR(where Ris an alkyl group having 6-10 carbon atoms), acrylic ester B represented by CH═CHCOOR(where Ris an alkyl group having 11 carbon atoms or more), a hydroxyl group-containing monomer, and an isocyanate compound having a radical reactive carbon-carbon double bond where the ratios of components are 40-10 mol % of the acrylic ester B with respect to 60-90 mol % of the acrylic ester A, 10-30 mol % hydroxyl group-containing monomer with respect to 100 mol % of the total of the acrylic ester A and the acrylic ester B, and 70-90 mol % isocyanate compound with respect to 100 mol % of the monomer containing a hydroxl group.