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:
Apr. 18, 1995
Filed:
Jun. 23, 1992
Applicant:
Inventors:
Moiz Khambaty, Sunnyvale, CA (US);
Corey D Petersen, Pleasanton, CA (US);
Assignee:
IMP, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 45 ; 437 30 ; 437 57 ; 148D / ;
Abstract
A method of threshold adjust implantation which involves the implanting of some of the PMOS FETs' channels on a CMOS circuit so the PMOS FETs have a threshold voltage of substantially zero volts, the implanting involves an additional implantation of ions into the PMOS FETs' channels in addition to the implantation required to raise the PMOS FETs' threshold voltage from the native threshold voltage to the normal threshold voltage.