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:
Dec. 20, 1977
Filed:
Sep. 20, 1976
Applicant:
Inventor:
John S Shier, Sunnyvale, CA (US);
Assignee:
Intersil, Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 48 ; 357 50 ; 357 51 ; 357 91 ;
Abstract
A buried load device in an integrated circuit extends between two regions of like conductivity isolated from each other by thick oxide and substrate comprises a channel beneath the oxide and having dimensions defined by a diffused region of opposite conductivity type. The buried channel is formed by impurity migration from an upper epitaxial layer that is oxidized to separate two regions and the connecting channel width is defined by diffused strip regions of opposite conductivity to establish a desired current-voltage relationship thereof.