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. 14, 1992
Filed:
May. 10, 1991
Nobutaka Shimizu, Kawasaki, JP;
Takehisa Tsujimura, Kawasaki, JP;
Masahiro Sugimoto, Yokosuka, JP;
Shigeki Harada, Musashino, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A ceramic package type semiconductor device comprising: a ceramic substrate having a wiring pattern layer formed on a top surface thereof; at least one semiconductor element mounted on the ceramic substrate with a top face thereof facing downward and electrically connected to the wiring patttern layer; a metal cap having at least one through-hole corresponding to an external size of the semiconductor element and an end portion thereof soldered to the top surface of the ceramic substrate, so that a top surface of the metal cap and a bottom surface of the semiconductor element fitting into the through-hole form a flat plane: and a heatsink member comprising a plate portion which is soldered to the flat plane of the metal cap and the semiconductor element to complete a hermetic sealing of the semiconductor element.