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:
Aug. 01, 2006
Filed:
Feb. 18, 2002
Tetsuya Satou, Osaka, JP;
Mikiko Matsuo, Nara, JP;
Hisanori Sugiura, Osaka, JP;
Tsuyoshi Uemura, Osaka, JP;
Tetsuya Satou, Osaka, JP;
Mikiko Matsuo, Nara, JP;
Hisanori Sugiura, Osaka, JP;
Tsuyoshi Uemura, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A light-emitting element having at least a light-emitting region arranged between a pair of electrodes is provided, in which the light-emitting region contains either (A) a light-emitting material, a compound capable of sustaining the charge transport, and a heavy metal as a mixture, or (B) a compound that is capable of sustaining the charge transport and that includes both of a portion for contributing to the charge transport and a portion for contributing to the light emission within the compound, and a heavy metal as a mixture. A method for producing the light-emitting element, and a display device in which a plurality of the light-emitting elements are used, are provided also. With the light-emitting element of the present invention, it is possible to provide an organic thin film electroluminescent element that has a high emission efficiency, whose materials are easy to synthesize as compared with a heavy metal complex-doped element that has been studied widely in recent years, that has a small concentration quenching, and that is stable and uniform. Therefore, the light-emitting element of the present invention is applicable as a light source for use in a flat-panel-type self-luminous display device and for other various purposes such as communication and illumination.