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, 1996
Filed:
Jan. 13, 1994
Applicant:
Inventor:
Nobuyoshi Fujimaki, Annaka, JP;
Assignee:
Shin-Etsu Handotai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 40 ; 437233247 ; 148D / ;
Abstract
In a method of manufacturing a MOS device, of the type wherein an electrode film is deposited on a gate oxide film, after which a plurality of heat-treating steps are carried out in ambient gases and at a temperature range between 800.degree. and 110.degree. C., at least one of the heat-treating steps is carried out in a hydrogen atmosphere. The resultant MOS device has improved a time-dependent dielectric breakdown characteristics and maintained an improved time-zero dielectric breakdown characteristics which is comparable to that provided by the conventional hydrogen annealing.