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:
Jul. 20, 1976
Filed:
May. 15, 1974
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 52 ; 357 20 ; 357 38 ; 357 54 ; 357 58 ; 357 59 ; 357 90 ;
Abstract
A semiconductor device is provided having at least two semiconductor regions of opposite conductivity type and forming a planar-type PN junction. A field limiting ring is disposed spaced from the PN junction. A high-resistivity polycrystalline silicon layer covers the PN junction and the field limiting ring.