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:
Sep. 07, 1999
Filed:
Apr. 28, 1998
Applicant:
Inventor:
Howard D Bartlow, West Linn, OR (US);
Assignee:
Spectrian, Inc., Sunnyvale, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361704 ; 361707 ; 361708 ; 361709 ; 361711 ; 361719 ; 361760 ; 361767 ; 174 163 ; 174 521 ; 174252 ; 165 803 ;
Abstract
A power semiconductor device package in which a semiconductor chip is mounted on a ceramic platform and sealed thereon by a lid. The platform has opposing end portions which receive fasteners for directly fastening the platform and semiconductor device to a heat sink without the requirement of a separate mounting clamp. In one embodiment, metal films are provided on a surface of the platform adjacent to recesses for receiving the fasteners. The metal films function to distribute the stress of the fasteners over the surface of the end portions thereby minimizing the possibility of fracture of the ceramic platform.