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:
Mar. 26, 2013
Filed:
Feb. 04, 2008
Takumi Nakahata, Tokyo, JP;
Kazunori Inoue, Tokyo, JP;
Koji Oda, Tokyo, JP;
Naoki Nakagawa, Tokyo, JP;
Nobuaki Ishiga, Kumamoto, JP;
Takumi Nakahata, Tokyo, JP;
Kazunori Inoue, Tokyo, JP;
Koji Oda, Tokyo, JP;
Naoki Nakagawa, Tokyo, JP;
Nobuaki Ishiga, Kumamoto, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A display device includes a metal conductive layer formed on a substrate, a transparent electrode film formed on the substrate and joined to the metal conductive layer and an interlayer insulating film isolating the metal conductive layer and the transparent conductive film. The metal conductive layer has a lower aluminum layer made of aluminum or aluminum alloy, an intermediate impurity containing layer made of aluminum or aluminum alloy containing impurities and formed on a substantially entire upper surface of the lower aluminum layer and an upper aluminum layer made of aluminum or aluminum alloy and formed on the intermediate impurity containing layer. In the interlayer insulating film and the upper aluminum layer, a contact hole penetrates therethrough and locally exposes the intermediate impurity containing layer, and the transparent electrode film is joined to the metal conductive layer in the intermediate impurity containing layer exposed from the contact hole.