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:
Jan. 21, 2020
Filed:
Jan. 16, 2012
Norimasa Yokoyama, Tokyo, JP;
Daizou Kanda, Tokyo, JP;
Shuichi Hayashi, Tokyo, JP;
Eiji Takahashi, Tsukuba, JP;
Norimasa Yokoyama, Tokyo, JP;
Daizou Kanda, Tokyo, JP;
Shuichi Hayashi, Tokyo, JP;
Eiji Takahashi, Tsukuba, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
To provide an organic compound of excellent characteristics that exhibits excellent electron-injecting/transporting performance with hole blocking ability, and has high stability in the thin-film state, as material for an organic electroluminescent device having high efficiency and high durability, and to provide the organic electroluminescent device having high efficiency and high durability using the compound. An organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, wherein the compound of general formula (1) in which a substituted bipyridyl group and a pyridoindole ring structure are bonded via a phenylene group, is used as a constituent material of at least one organic layer.