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:
Dec. 08, 2009
Filed:
Dec. 11, 2008
Takashi Moriyama, Kanagawa, JP;
Shinjiro Okada, Kanagawa, JP;
Akira Tsuboyama, Kanagawa, JP;
Takao Takiguchi, Tokyo, JP;
Seishi Miura, Kanagawa, JP;
Satoshi Igawa, Kanagawa, JP;
Jun Kamatani, Kanagawa, JP;
Hironobu Iwawaki, Kanagawa, JP;
Takashi Moriyama, Kanagawa, JP;
Shinjiro Okada, Kanagawa, JP;
Akira Tsuboyama, Kanagawa, JP;
Takao Takiguchi, Tokyo, JP;
Seishi Miura, Kanagawa, JP;
Satoshi Igawa, Kanagawa, JP;
Jun Kamatani, Kanagawa, JP;
Hironobu Iwawaki, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided an organic light-emitting element comprising at least one light-emitting layer between a pair of electrodes formed on a substrate and at least two or more light emission center materials included in the light-emitting layer, and that the at least one or more light emission center materials include a phosphorescent light-emitting material, and an excitation lifetime of the light emission center material that emits light having a shortest wavelength is shorter than an excitation lifetime of the other light emission center material, whereby a high-efficiency organic light-emitting element without decreasing a color purity of white light emission can be obtained.