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:
Dec. 28, 1999
Filed:
Dec. 13, 1995
Yasuhisa Oana, Yokohama, JP;
Nobuki Ibaraki, Kanagawa-ken, JP;
Masayuki Dohjo, Himeji, JP;
Yoshitaka Kamata, Yokoham, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention provides a display device substrate includes a first wiring layer formed on a substrate made of an insulating material, a second wiring layer formed to cross the first wiring layer, and an insulating film interposed between the first and second wiring layers at a cross point portion therebetween, wherein the first wiring layer is constituted by an electrode wiring layer made of a material containing aluminum as a main component and a surface covering layer formed by causing a refractory metal to denature the electrode wiring layer. The present invention also provides a method of manufacturing a display device substrate in which an electrode wiring layer made of a material containing aluminum as a main component is formed on a substrate made of an insulating material, a thin film made of a refractory metal is formed on the electrode wiring layer, and heat treatment is performed to cause the refractory metal to denature a surface portion of the electrode wiring layer, thereby forming a surface covering layer.