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. 15, 2017
Filed:
Aug. 25, 2010
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Tsukuba, JP;
Kazunori Togashi, Tokyo, JP;
Shigeru Kusano, Tsukuba, JP;
Norimasa Yokoyama, Tokyo, JP;
Makoto Nagaoka, Tsukuba, JP;
Kazunori Togashi, Tokyo, JP;
Shigeru Kusano, Tsukuba, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
[Problem]An organic compound of excellent characteristics is provided that exhibits excellent hole-injecting/transporting performance with electron blocking ability, and that has high stability in the thin-film state and high luminous efficiency, the organic compound being provided as material for an organic electroluminescent device having high efficiency and high durability. The invention also provides a high-efficient, high-durable organic electroluminescent device using the compound. [Means for Resolution] The compound is of the following general formula having a carbazole ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and the compound is used as a constituent material of at least one organic layer.