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:
Aug. 05, 2014
Filed:
Dec. 23, 2009
Tomoyuki Ishimatsu, Tochigi, JP;
Hiroki Ozeki, Tochigi, JP;
Tomoyuki Ishimatsu, Tochigi, JP;
Hiroki Ozeki, Tochigi, JP;
Dexerials Corporation, Shinagawa-ku, Tokyo, JP;
Abstract
An adhesive film, containing a first adhesive layer in which conductive particles are dispersed, and a second adhesive layer adhered to the first adhesive layer, wherein the lowest viscosity of the first adhesive layer attained at or below the curing temperature is higher than that of the second adhesive layer attained at or below the curing temperature, where the curing temperature is a temperature at which the adhesive layer starts to cure, wherein the first and second adhesive layers are respectively disposed to a substrate side and an electronic part side, and the adhesive film is configured to join the electronic part and the substrate by heating and pressurizing the substrate and the electronic part with the adhesive layer being therebetween, and wherein the first adhesive layer has a thickness which is less than two times of an average particle diameter of the conductive particles.