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:
Mar. 22, 1988
Filed:
Jul. 24, 1985
Applicant:
Inventors:
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 2313 ; 357 41 ; 357 51 ; 357 59 ;
Abstract
An MOSIC is provided with an input and/or output protective circuit which includes a first semiconductor region formed in a semiconductor substrate with a PN junction and electrically coupled between an input or output terminal and a transistor to be protected and a second semiconductor region formed so as to surround the first region. The PN junction formed between the second region and the substrate is reverse-biased, whereby the second region absorbs carriers which are undesirably injected from the first region into the substrate in an electrical operation of the IC.