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:
Aug. 15, 2000
Filed:
Dec. 23, 1997
Applicant:
Inventor:
Hisamitsu Suzuki, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
438202 ; 438234 ;
Abstract
Implantation of a high concentration of P type impurity in an emitter electrode can be prevented during forming a source-drain of PMOS and a extrinsic base, by keeping an insulating film intact only on an emitter electrode and simultaneously patterning the insulating electrode and a gate electrode, leading to prevention of increase and dispersion of an emitter resistance.