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. 01, 2026
Filed:
Jan. 21, 2021
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Sfc Co., Ltd., Chungcheongbuk-do, KR;
Junichi Izumida, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
Kouki Kase, Tokyo, JP;
Kazuyuki Suruga, Tokyo, JP;
Shuichi Hayashi, Tokyo, JP;
Soon-Wook Cha, Cheongju-si, KR;
Sung-Hoon Joo, Cheongju-si, KR;
Byung-Sun Yang, Cheongju-si, KR;
Ji-Hwan Kim, Cheongju-si, KR;
HODOGAYA CHEMICAL CO., LTD., Tokyo, JP;
SFC CO., LTD., Chungcheongbuk-Do, KR;
Abstract
An organic electroluminescent element including an anode and a cathode and including, between the anode and the cathode, at least a first hole transport layer, a second hole transport layer, a blue-light-emitting layer, and an electron transport layer disposed in this order from the anode side, in which at least one of the layers disposed between the first hole transport layer and the electron transport layer includes an arylamine compound represented by general formula (1).