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. 22, 1994
Filed:
Apr. 24, 1991
Applicant:
Inventor:
Kesao Noguchi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257 57 ; 257 59 ; 257 66 ; 257 72 ; 257641 ; 359 59 ;
Abstract
The thin-film transistor for liquid crystal display according to the present invention has an inverted-staggered structure in which source and drain electrodes are formed above a gate electrode on a glass substrate, and comprises a nondoped amorphous silicon film as a channel region just above the gate electrode, and a borosilicate glass film formed on the amorphous silicon film. Preferably, the transistor further includes a silicon nitride film formed over the borosilicate glass film.