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:
Oct. 20, 1987
Filed:
Dec. 30, 1986
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; G11C / ;
U.S. Cl.
CPC ...
357 42 ; 357 43 ; 357 45 ; 357 2311 ; 365 51 ;
Abstract
A gate array type semiconductor device including at least a plurality of basic cell arrays and diffusion regions for suppressing latchup in the basic cells forming the basic cell arrays. Each of the diffusion regions has a comb-shaped structure, i.e., wide tooth parts, narrow tooth parts, and a base part, formed as an integral structure. These parts partially surround each basic cell.