公开(公告)号：US20210328154A1

公开(公告)日：2021-10-21

申请号：US17264742

申请日：2019-07-26

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Bitnari KIM ,  Su-Hyun LEE ,  Doo-Hyeon MOON ,  Sang-Hee CHO

IPC: H01L51/00

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having higher luminous efficiency and/or longer lifetime properties as compared with a conventional organic electroluminescent device.

公开(公告)号：US20210265569A1

公开(公告)日：2021-08-26

申请号：US17259909

申请日：2019-06-05

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Bitnari KIM ,  Jeong-Eun YANG ,  Doo-Hyeon MOON ,  Su-Hyun LEE ,  Hyo-Soon PARK ,  Sang-Hee CHO

IPC: H01L51/00

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.

公开(公告)号：US20210135127A1

公开(公告)日：2021-05-06

申请号：US17075602

申请日：2020-10-20

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD

Inventor： So-Young Jung ,  Su-Hyun LEE ,  Mi-Ja LEE ,  Sang-Hee CHO ,  Doo-Hyeon MOON

IPC: H01L51/00

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.

公开(公告)号：US20210043848A1

公开(公告)日：2021-02-11

申请号：US16981243

申请日：2019-03-15

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Bitrtari Kim ,  Sang-Hee CHO ,  Hyo-Jung LEE ,  Hyun-Ju KANG ,  Jeong-Eun YANG ,  Su-Hyun LEE

IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  C07D403/10 ,  C07D209/94 ,  C07D405/10 ,  C07D405/04 ,  C07D487/04 ,  C07D487/16

Abstract: The present disclosure relates to a composition material for an organic electroluminescent device, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the composition material for an organic electroluminescent device comprising a specific combination of compounds, an organic electroluminescent device having high luminous efficiency and/or long lifespan characteristics can be produced.

公开(公告)号：US20210005822A1

公开(公告)日：2021-01-07

申请号：US16886822

申请日：2020-05-29

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Doo-Hyeon MOON ,  Su-Hyun LEE ,  Jin-Ri HONG ,  So-Young JUNG ,  Dong-Hyung LEE ,  Sang-Hee CHO

IPC: H01L51/00

Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound, an organic electroluminescent device having a low driving voltage and/or a high luminous efficiency and/or a long lifespan can be provided.

公开(公告)号：US20200212310A1

公开(公告)日：2020-07-02

申请号：US16640082

申请日：2018-09-21

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Bitnari KIM ,  Su-Hyun LEE ,  So-Young JUNG ,  Hyo-Soon PARK ,  Tae-Jun HAN ,  Young-Jun CHO ,  Sang-Hee CHO

IPC: H01L51/00 ,  C07D487/04 ,  C07D251/24 ,  C07D239/74 ,  C07D241/42 ,  C09K11/02 ,  C09K11/06

Abstract: The present disclosure relates to a plurality of host materials and organic electroluminescent devices comprising the same. The present disclosure may provide a plurality of host materials having a composition favorable to thermal denaturation due to a low deposition temperature, while improving hole properties and electronic properties of HOMO and LUMO, by comprising separate compounds represented by formulas 1 and 2 into a light-emitting layer. By comprising the plurality of host materials of the present disclosure, it is possible to provide an organic electroluminescent device having a lower driving voltage, higher luminous efficiency and/or longer lifetime.