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. 06, 2001
Filed:
Dec. 18, 1998
Koji Kobashi, Kobe, JP;
Yoshihiro Yokota, Kobe, JP;
Takeshi Tachibana, Kobe, JP;
Kazushi Hayashi, Kobe, JP;
Maki Hamaguchi, Kobe, JP;
Katsumi Yoshino, Kishiwada, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
An organic LED is provided that can stably and efficiently emit light as a result of a heat resistant hole drift layer. The organic LED can include, in order, a substrate, a hole injection electrode layer, a hole drift layer, an organic light emitting layer, an electron drift layer and an electron injection electrode layer. The hole drift layer comprises a diamond film with a boron concentration of between about 1.0×10,and about 1.0×10,/cm,. An optically transparent layer can be formed on the electron injection electrode layer.