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:
Dec. 17, 1991
Filed:
Mar. 29, 1989
Applicant:
Inventors:
Salvatore Musumeci, Riposto, IT;
Cesare Ronsisvalle, Catania, IT;
Assignee:
SGS-Thomson Microelectronics S.r.L., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 40 ; 437 29 ; 437 81 ; 437 95 ; 148D / ;
Abstract
The thin buffer layer, very often present in HIMOS devices, is achieved by ion implantation or predeposition of the dopant followed by subsequent diffusion.