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. 20, 1990
Filed:
Jul. 18, 1988
Applicant:
Inventor:
Paolo Picco, Monza, IT;
Assignee:
SGS-Thomson Microelectronics S.p.A., Catania, IT;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
437 34 ; 437 41 ; 437 56 ; 437 58 ; 148D / ; 357 42 ; 357 44 ;
Abstract
A process for manufacturing CMOS devices is described, wherein two separate masks are used for the production of the gate regions of the two complementary transistors of the CMOS device, each of said masks allowing the formation of the gate region of only one of the two complementary transistors and being also used for the implantation of ions adapted to form the source and drain regions of said transistor. Accordingly only two masking steps are sufficient for the production of the gate, drain and source regions of the CMOS devices, with a reduction of the costs related to the production of integrated circuits executed in CMOS technology.