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:
Oct. 06, 2009
Filed:
Apr. 26, 2004
Applicants:
Hisayuki Kawamura, Sodegaura, JP;
Tetsuya Inoue, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Inventors:
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); H05B 33/14 (2006.01); C09K 11/06 (2006.01); C07C 211/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.