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. 12, 2021
Filed:
Nov. 06, 2015
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Sfc Co., Ltd., Cheongju-si, KR;
Shuichi Hayashi, Tokyo, JP;
Naoaki Kabasawa, Tokyo, JP;
Soon-wook Cha, Cheongju-si, KR;
Sang-woo Park, Cheongju-si, KR;
Ju-man Song, Cheongju-si, KR;
Kyung-seok Jeon, Cheongju-si, KR;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
SFC Co., Ltd., Cheongju-si, KR;
Abstract
An organic electroluminescent device having low driving voltage, high luminous efficiency, and a long lifetime is provided by combining various materials for an organic EL device, which are excellent, as materials for an organic electroluminescent device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound represented by the following general formula (1), and the light emitting layer includes an amine derivative of the following general formula (2) having a condensed ring structure.[Chemical Formula 1]