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:
Sep. 04, 1984
Filed:
Dec. 01, 1982
Applicant:
Inventors:
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
Japan Electronic Industry Development Association, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ; H01L / ;
U.S. Cl.
CPC ...
204 351 ; 29571 ; 29591 ; 156655 ; 204 / ; 357-4 ; 357 23 ;
Abstract
A method for making a thin-film transistor wherein a gate insulating layer is formed by anodizing two oxide layers on the substrate and then etching the assembly to completely remove the uppermost one of these layers to leave the lowermost layer so as to serve as the gate insulating layer.