公开(公告)号：US20240251665A1

公开(公告)日：2024-07-25

申请号：US18285084

申请日：2022-03-31

Applicant: TOSOH CORPORATION

Inventor： Masaya HIRANO ,  Naoki MATSUMOTO ,  Hirokazu SHINYA ,  Shintaro NOMURA ,  Hiroyuki KAWASHIMA ,  Kenji KOIKE

IPC: H10K85/60 ,  C07D209/88 ,  C07D405/04 ,  C07D405/10 ,  C07D405/12 ,  C07D405/14 ,  C07D409/04 ,  C07D409/10 ,  C07D409/12 ,  C07D409/14 ,  C09K11/06 ,  H10K50/15 ,  H10K50/17 ,  H10K85/40

CPC classification number: H10K85/636 ,  C07D209/88 ,  C07D405/04 ,  C07D405/10 ,  C07D405/12 ,  C07D405/14 ,  C07D409/04 ,  C07D409/10 ,  C07D409/12 ,  C07D409/14 ,  C09K11/06 ,  H10K85/40 ,  H10K85/633 ,  C09K2211/1018 ,  H10K50/15 ,  H10K50/17 ,  H10K85/615 ,  H10K85/622 ,  H10K85/624 ,  H10K85/626 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576

Abstract: There is provided a transverse current suppressing material that suppresses a transverse current of an organic electroluminescent element, a carbazole compound, a hole-injection layer containing the transverse current suppressing material and the carbazole compound and an organic electroluminescent element that has good drive voltage, luminous efficiency and durability and has a lower transverse current. A transverse current suppressing material for an organic electroluminescent element, represented by the formula (1) [In the formula (1), A is represented by the formula (2) or (3), and B is represented by the formula (4)].

公开(公告)号：US20220274952A1

公开(公告)日：2022-09-01

申请号：US17630859

申请日：2020-07-22

Applicant: TOSOH CORPORATION ,  SAGAMI CHEMICAL RESEARCH INSTITUTE

Inventor： Naoki UCHIDA ,  Hidenori AIHARA ,  Takuya YAMAGATA ,  Naoki HAYAKAWA ,  Natsumi NAKAJIMA ,  Kazuki HATTORI ,  Fuminari UEHARA ,  Yohei ONO ,  Masaya HIRANO ,  Yuta MORINAKA ,  Keisuke NOMURA ,  Eriko OHTA ,  Tomohiro SHONO ,  Kana OIKE ,  Kazushi HAYASHI ,  Keiya AOYAGI ,  Kosuke SATO ,  Toshiki NISHIURA

IPC: C07D401/10 ,  H01L51/50 ,  H01L51/00 ,  C07D209/86 ,  C07D487/14 ,  C07D307/91 ,  C07D251/24 ,  C07D401/14 ,  C07F5/02 ,  C07F7/08 ,  C07C255/46

Abstract: An object of the present invention is to provide a cyclic azine compound exhibiting both excellent driving voltage characteristics and excellent current efficiency characteristics. The desired cyclic azine compound has a specific structure represented by formula (1).