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:
Feb. 12, 1991
Filed:
Oct. 07, 1988
Applicant:
Inventor:
Nan-Hsiung Tsai, Cupertino, CA (US);
Assignee:
MOS Electronics Corporation, Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338314 ; 357 51 ;
Abstract
A resistor located above the semiconductive substrate of an integrated circuit chip can be made smaller than prior art resistors because no area is allocated for resistor contacts. During manufacture, a resistive strip having the width of the intended resistor is formed. A photoresist mask protects the top and sides of the resistive strip where the resistor is located, and etching exposes the ends but not the top and sides of the resistor. Contact to the resistor occurs at the upwardly extending (usually near vertical) end surfaces of the resistor.