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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.:

US 8900728 B1

PDFFull Text
Date of Patent:
Dec. 02, 2014

Filed:

Apr. 18, 2013

Carbazole derivative, and light emitting element and light emitting device using the carbazole derivative

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Inventors:

Harue Nakashima, Atsugi, JP;

Sachiko Kawakami, Atsugi, JP;

Daisuke Kumaki, Tokamachi, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;

Attorneys:

Eric J. Robinson

Robinson Intellectual Property Law Office, P.C.

Primary Examiner:

Gregory Clark

Int. Cl.
CPC ...
H01L 51/54 (2006.01); C07D 401/12 (2006.01); C07D 401/14 (2006.01); H01L 51/50 (2006.01); C07D 409/14 (2006.01); C09K 11/06 (2006.01); C07D 417/12 (2006.01); H01L 51/00 (2006.01); C07D 209/88 (2006.01); C07D 417/14 (2006.01); C07D 409/12 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 401/12 (2013.01); C07D 401/14 (2013.01); C09K 2211/1037 (2013.01); H01L 51/5048 (2013.01); C07D 409/14 (2013.01); C09K 11/06 (2013.01); H01L 2251/308 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1022 (2013.01); C07D 417/12 (2013.01); H01L 51/006 (2013.01); C07D 209/88 (2013.01); C07D 417/14 (2013.01); H01L 51/0061 (2013.01); H01L 51/0059 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1092 (2013.01); C09K 2211/1014 (2013.01); H01L 51/0081 (2013.01); C07D 409/12 (2013.01); Y10S 428/917 (2013.01);
Abstract

It is an object of the present invention to provide a material which is excellent in a hole injecting property and a hole transporting property, and to provide a light emitting element and a light emitting device using a material which is excellent in a hole injecting property and a hole transporting property. The present invention provides a carbazole derivative represented by a general formula (1). The carbazole derivative according to the present invention is excellent in the hole injecting property. By using the carbazole derivative according to the present invention as a hole injecting material for a hole injecting layer of a light emitting element, a driving voltage can be reduced. In addition, a lower driving voltage, improvement of the luminous efficiency, a longer life time, and higher reliability can be realized by applying the material to a light emitting element or a light emitting device.

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