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. 18, 2001
Filed:
Nov. 26, 1997
Applicant:
Inventors:
Toshiya Uemura, Aichi, JP;
Naoki Shibata, Aichi, JP;
Shizuyo Noiri, Aichi, JP;
Masanori Murakami, Kyoto, JP;
Yasuo Koide, Kyoto, JP;
Jun Ito, Aichi, JP;
Assignee:
Toyoda Gosei Co., Ltd., Nishikasugai-Gun, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 3/300 ;
U.S. Cl.
CPC ...
H01L 3/300 ;
Abstract
A layer comprising cobalt (Co) is formed on a p,layer by vapor deposition, and layer comprising gold (Au) is formed thereon. The two layers are alloyed by a heat treatment to form a light-transmitting electrode. The light-transmitting electrode therefore has reduced contact resistance and improved light transmission properties, and gives a light-emitting patten which is stable over a long time. Furthermore, since cobalt (Co) is an element having a large work function, satisfactory ohmic properties are obtained.