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:
May. 17, 1988
Filed:
Aug. 26, 1986
Applicant:
Inventor:
Yoshihisa Mizutani, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 42 ; 357 68 ;
Abstract
A semiconductor device has P-type semiconductor body, a plurality of N-type wells formed in a surface area of the semiconductor body, and potential setting member for setting the potentials of the wells. This member has an N.sup.+ -type layer formed in the semiconductor body in contact with bottom surfaces of the wells, and an electrode formed on one of the wells.