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:
Nov. 17, 2009
Filed:
Feb. 23, 2005
Masayuki Mishima, Minami-Ashigara, JP;
Tatsuya Igarashi, Minami-Ashigara, JP;
Kazumi Nii, Minami-Ashigara, JP;
Tetsuo Nakamura, Minami-Ashigara, JP;
Masayuki Mishima, Minami-Ashigara, JP;
Tatsuya Igarashi, Minami-Ashigara, JP;
Kazumi Nii, Minami-Ashigara, JP;
Tetsuo Nakamura, Minami-Ashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
To provide an organic electroluminescent device having excellent durability and having high luminous efficiency and luminance, which can be effectively utilized for surface light sources such as full color displays, backlights, and illuminating light sources and light source arrays such as printers, the organic electroluminescent device includes at least one organic compound layer containing a light emitting layer between a pair of electrodes, wherein the light emitting layer contains a host material and a phosphorescent material; the host material is a five-coordinate metal complex; and the phosphorescent material is at least one Ir complex having a specific partial structure.