公开(公告)号：US11999818B2

公开(公告)日：2024-06-04

申请号：US16972672

申请日：2019-07-01

申请人： HODOGAYA CHEMICAL CO., LTD.

发明人： Kazunori Togashi ,  Hideyoshi Kitahara ,  Junichi Izumida ,  Hiroki Hirai ,  Mika Shinoda

IPC分类号： H01L51/50 ,  C08G61/12 ,  H10K85/60 ,  H10K50/11 ,  H10K50/15 ,  H10K50/17 ,  H10K50/18

CPC分类号： C08G61/12 ,  H10K85/631 ,  H10K50/11 ,  H10K50/15 ,  H10K50/17 ,  H10K50/18

摘要： It is an object of the present invention to provide a high molecular weight compound that has excellent hole injection and transport performance, is capable of blocking electrons, and is highly stable as a thin film. It is another object of the present invention to provide an organic EL element that includes an organic layer (thin film) made of the above-described high molecular weight compound, wherein the organic EL element has high light emission efficiency and a long lifespan. The high molecular weight compound according to the present invention includes a repeating unit represented by a general formula (3), that is constituted by a specific triarylamine structural unit and a specific bonding structural unit, and has a weight average molecular weight of 10,000 or more and less than 1,000,000 on a polystyrene basis.

公开(公告)号：US11968882B2

公开(公告)日：2024-04-23

申请号：US17616537

申请日：2020-05-29

申请人： HODOGAYA CHEMICAL CO., LTD.

发明人： Kazunori Togashi ,  Mika Shinoda ,  Hideyoshi Kitahara ,  Shunji Mochizuki ,  Hiroki Hirai ,  Yuta Saegusa

IPC分类号： H10K85/10 ,  C08G61/12 ,  H10K50/15

CPC分类号： H10K85/115 ,  C08G61/12 ,  H10K85/151 ,  C08G2261/124 ,  C08G2261/1412 ,  C08G2261/148 ,  C08G2261/18 ,  C08G2261/228 ,  C08G2261/314 ,  C08G2261/3142 ,  C08G2261/3162 ,  C08G2261/95 ,  H10K50/15

摘要： A high-molecular-weight compound having at least one substituted triarylamine structural unit represented by the following general formula (1), further including a structural unit having at least one aromatic hydrocarbon ring or a structural unit having a triarylamine skeleton in addition to the at least one substituted triarylamine structural unit, and having a weight average molecular weight of 10,000 or more and 1,000,000 or less in terms of polystyrene and no a crosslinker, wherein the high-molecular-weight compound is used in an organic EL device as a constituent material of at least one organic layer. A polymer material having excellent hole injection/transport performance, electron blocking capability, high heat resistance, and high stability in a thin-film state for use in a polymer organic EL device, and an organic EL device having a low drive voltage, high light emission efficiency, and a long lifetime using this polymer material.