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:
Jun. 16, 1987
Filed:
May. 27, 1986
Applicant:
Inventors:
Konrad Hieber, Bernau, DE;
Franz Neppl, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 71 ; 357 231 ; 357 2315 ; 427 93 ; 4271263 ;
Abstract
Chemical reactions between a tantalum or tantalum silicide metallization layer and an underlying thin gate oxide are avoided by the interposition of an intermediate layer of oxygen-doped tantalum or tantalum silicide whose thickness amounts to about 1/20 to 1/5 of the layer thickness of the entire gate metallization. The metallization layer is produced by high-frequency sputtering in which oxygen is added at the beginning of the process and argon is used as a sputtering gas. Low specific resistance values are accomplished by means of this gate metallization.