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:
Sep. 22, 2015
Filed:
Nov. 28, 2005
Harue Nakashima, Atsugi, JP;
Sachiko Kawakami, Isehara, JP;
Daisuke Kumaki, Tokamachi, JP;
Satoshi Seo, Kawasaki, JP;
Hisao Ikeda, Atsugi, JP;
Junichiro Sakata, Atsugi, JP;
Yuji Iwaki, Atsugi, JP;
Harue Nakashima, Atsugi, JP;
Sachiko Kawakami, Isehara, JP;
Daisuke Kumaki, Tokamachi, JP;
Satoshi Seo, Kawasaki, JP;
Hisao Ikeda, Atsugi, JP;
Junichiro Sakata, Atsugi, JP;
Yuji Iwaki, Atsugi, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
One object of the present invention is to provide a light emitting element that includes an organic compound and an inorganic compound and has low driving voltage. The light emitting element of the invention includes a plurality of layers between a pair of electrodes, wherein the plurality of layers includes a layer that contains a carbazole derivative represented by a general formula (1) and an inorganic compound exhibiting an electron accepting property with respect to the carbazole derivative. By utilizing this structure, electrons are transported between the carbazole derivative and the inorganic compound and carriers are internally generated, and hence, the driving voltage of the light emitting element can be reduced.