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. 22, 2011
Filed:
Jun. 26, 2008
Manabu Furugori, Kanagawa-ken, JP;
Shinjiro Okada, Kanagawa-ken, JP;
Akira Tsuboyama, Kanagawa-ken, JP;
Takao Takiguchi, Tokyo, JP;
Seishi Miura, Kanagawa-ken, JP;
Takashi Moriyama, Kanagawa-ken, JP;
Satoshi Igawa, Kanagawa-ken, JP;
Jun Kamatani, Kanagawa-ken, JP;
Hironobu Iwawaki, Kanagawa-ken, JP;
Manabu Furugori, Kanagawa-ken, JP;
Shinjiro Okada, Kanagawa-ken, JP;
Akira Tsuboyama, Kanagawa-ken, JP;
Takao Takiguchi, Tokyo, JP;
Seishi Miura, Kanagawa-ken, JP;
Takashi Moriyama, Kanagawa-ken, JP;
Satoshi Igawa, Kanagawa-ken, JP;
Jun Kamatani, Kanagawa-ken, JP;
Hironobu Iwawaki, Kanagawa-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A light emitting device having an anode and a cathode provided on a substrate, and an organic light emitting layer between the anode and the cathode, where the organic light emitting layer includes a light emitting material and first and second dopants for improving the dispersability thereof. As the first dopant, there is employed a phosphorescent dopant. The amount of the second dopant is greater than the amount of the first dopant.