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:
Nov. 05, 1991
Filed:
Nov. 22, 1989
Satoru Okamoto, Hyogo, JP;
Kazufumi Terazi, Tokyo, JP;
Seiichi Nishino, Tokyo, JP;
Manabu Bonkohara, Tokyo, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention relates to a semiconductor casing which permits transmitting ultraviolet rays to a semiconductor chip within the casing. The semiconductor casing includes the substrate formed by a thin metal plate for mounting the semiconductor chip, a ceramic frame fixed to the periphery of the substrate, a ceramic cap which covers the semiconductor chip, is mounted on the ceramic frame and allows transmission of ultraviolet rays, and leads which are sandwiched between the ceramic frame and the ceramic cap to allow the electrical connection of the semiconductor chip.