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:
Jun. 23, 1992
Filed:
Apr. 20, 1990
Applicant:
Inventors:
Yasunari Umemoto, Hachioji, JP;
Kiichi Ueyanagi, Kokubunji, JP;
Junji Shigeta, Fuchu, JP;
Norikazu Hashimoto, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 22 ; 357 16 ; 357 236 ; 357 41 ;
Abstract
An FET structure with improved .alpha.-particle immunity or soft error immunity particularly provided in a semi-insulating substrate. This structure includes some layer which can prevent both electrons and holes generated in a substrate by the incidence of .alpha.-particles from being injected into the FET.