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:
Jan. 12, 1993
Filed:
May. 15, 1991
Applicant:
Inventors:
Yoshihiro Ishida, Tokorozawa, JP;
Katsuji Komatsu, Kawagoe, JP;
Seiichi Mimura, Kawagoe, JP;
Kikuo Takenouchi, Higashimurayama, JP;
Isao Yabe, Tokorozawa, JP;
Shingo Ichikawa, Sayama, JP;
Yoshihiro Shimada, Tanashi, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437212 ; 437211 ; 437215 ; 437902 ;
Abstract
A method of making a resin encapsulated pin grid array includes an IC chip mounted on a resin substrate having a plurality of contact pins on its lower surface and resin-encapsulated by injection molding. A metal heat radiating member is integrally formed on the upper surface of the encapsulating resin when the encapsulating resin is injection-molded.