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:
Jun. 22, 1976
Filed:
Dec. 27, 1974
Applicant:
Inventors:
Thomas Edward Seidel, Berkeley Heights, NJ (US);
Masakazu Shoji, Warren, NJ (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338 13 ; 338-2 ;
Abstract
In semiconductor integrated circuits, piezoresistance is recognized as a factor affecting production yield and circuit performance. Current flow in a circuit resistor is aligned with one of the <100> family of equivalent directions. When current is flowing along such a direction the change in resistance due to any combination of stress components is at a minimum. Additionally, variation of resistance due to stress and strain may be reduced by an increase of the total impurity concentration in a resistor.