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:
Jul. 30, 1991
Filed:
Jul. 02, 1990
Applicant:
Inventors:
Makoto Miyago, Higashiosaka, JP;
Hiroshi Oka, Shiki, JP;
Akihiko Imaya, Nara, JP;
Hiroaki Kato, Nara, JP;
Takayoshi Nagayasu, Nara, JP;
Toshihiko Hirobe, Sakai, JP;
Assignee:
Sharp Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357-4 ; 357 237 ; 357 2315 ; 357 71 ;
Abstract
The production of a thin film transistor array device having a gate wiring on an insulated substrate. The gate wiring has an inner gate wiring having a first metal layer formed on the insulated substrate and a second metal layer whose etching speed is faster than that of the first metal layer, the first metal layer and the second metal layer being overlapped so as to constitute a dual structure, and an outer gate wiring covering the inner gate wiring.