公开(公告)号：US20220020931A1

公开(公告)日：2022-01-20

申请号：US17374908

申请日：2021-07-13

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Hyun-Ju KANG ,  So-Young JUNG ,  Eun-Joung CHOI ,  Hong-Yeop NA ,  Sang-Hee CHO ,  Su-Hyun LEE ,  Jin-Ri HONG

IPC: H01L51/00 ,  C07D413/14 ,  C07D413/12 ,  C07D487/04

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound represented by formula 1 and at least one second host compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising the host materials according to the present disclosure, an organic electroluminescent device having low driving voltage and/or high luminous efficiency and/or long lifespan can be provided.

公开(公告)号：US20210305519A1

公开(公告)日：2021-09-30

申请号：US17203629

申请日：2021-03-16

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： So-Young Jung ,  Su-Hyun LEE ,  Jin-Ri HONG ,  Ji-Song JUN ,  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 the specific combination of the compound as host materials, an organic electroluminescent device having low driving voltage and/or high luminous efficiency and/or long lifespan can be provided compared with a conventional organic electroluminescent device.

公开(公告)号：US20210159444A1

公开(公告)日：2021-05-27

申请号：US16610536

申请日：2018-05-31

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Sung-Woo JANG ,  Dong-Hyung LEE ,  Sang-Hee CHO ,  Nam-Kyun KIM

IPC: H01L51/52 ,  H01L51/50

Abstract: The present disclosure relates to an organic electroluminescent device comprising an organic electroluminescent compound of high refractive index. According to the present disclosure, an organic electroluminescent device having decreased thickness while implementing a desired color coordinate, or implementing deeper color coordinate in the same device thickness can be provided. As such, the production efficiency of the device can be increased by decreasing the material amount used in the organic electroluminescent device or a broader light-emitting zone can be obtained due to deeper color characteristic in the same device thickness.

公开(公告)号：US20210020849A1

公开(公告)日：2021-01-21

申请号：US16886820

申请日：2020-05-29

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Bitnari KIM ,  Doo-Hyeon MOON ,  Su-Hyun LEE ,  Du-Yong PARK ,  So-Young JUNG ,  Hae-Yeon KIM ,  Sang-Hee CHO

IPC: H01L51/00

Abstract: The present disclosure relates to a plurality of host materials comprising a first host material having a compound represented by formula 1, and a second host material having 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 long lifetime properties while having an equivalent or improved level of power efficiency compared to conventional organic electroluminescent devices.

公开(公告)号：US20200152885A1

公开(公告)日：2020-05-14

申请号：US16630871

申请日：2018-07-19

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Hyun KIM ,  Doo-Hyeon MOON ,  Sang-Hee CHO ,  Sung-Wook CHO

IPC: H01L51/00 ,  C07D401/10 ,  C09K11/06

Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. An organic electroluminescent device having a low driving voltage, a high luminous efficiency and/or excellent color coordinates can be provided by comprising the organic electroluminescent compound according to the present disclosure.

公开(公告)号：US20200028089A1

公开(公告)日：2020-01-23

申请号：US16481644

申请日：2018-02-23

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

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

IPC: H01L51/00

Abstract: The present disclosure relates to a plurality of host materials and an organic electroluminescent device comprising the same. The organic electroluminescent device of the present disclosure can exhibit excellent lifespan characteristics while maintaining high luminous efficiency by including a specific combination of a plurality of host compounds.

公开(公告)号：US20200013964A1

公开(公告)日：2020-01-09

申请号：US16483062

申请日：2018-02-27

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Tae-Jin LEE ,  Jeong-Eun YANG ,  Dong-Hyung LEE ,  Sang-Hee CHO

IPC: H01L51/00

Abstract: The present disclosure relates to an organic electroluminescent device comprising a light-emitting layer and a hole transport zone. By comprising a specific combination of a light-emitting layer and a hole transport zone, it is possible to provide an organic electroluminescent device having low driving voltage, high luminous efficiency and/or long lifespan properties.

公开(公告)号：US20240341178A1

公开(公告)日：2024-10-10

申请号：US18592645

申请日：2024-03-01

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Hee-Ryong KANG ,  So-Young JUNG ,  Hyo-Soon PARK ,  Jeong-Eun YANG ,  Sang-Hee CHO ,  So-Mi PARK

IPC: H10K85/60 ,  C07D413/04 ,  C07D413/14 ,  C09K11/06 ,  H10K50/11 ,  H10K101/00

CPC classification number: H10K85/657 ,  C07D413/04 ,  C07D413/14 ,  C09K11/06 ,  H10K85/615 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6574 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/90

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

公开(公告)号：US20240298528A1

公开(公告)日：2024-09-05

申请号：US18433577

申请日：2024-02-06

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： So-Young JUNG ,  Tae-Jun HAN ,  YeJin JEON ,  Dong-Gil KIM ,  Young-Jae KIM ,  Hyun-Ju KANG ,  Sang-Hee CHO ,  Bitnari KIM

IPC: H10K85/60 ,  C07D413/12 ,  C09K11/06 ,  H10K50/11 ,  H10K101/00

CPC classification number: H10K85/636 ,  C07D413/12 ,  C09K11/06 ,  H10K85/622 ,  H10K85/626 ,  H10K85/654 ,  H10K85/6574 ,  C09K2211/1018 ,  H10K50/11 ,  H10K85/657 ,  H10K85/6572 ,  H10K2101/90

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 a host material, an organic electroluminescent device having a lower driving voltage and/or higher luminous efficiency and/or improved lifespan properties compared to a conventional organic electroluminescent device may be provided.

公开(公告)号：US20240065099A1

公开(公告)日：2024-02-22

申请号：US18352549

申请日：2023-07-14

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Hee-Ryong KANG ,  So-Young JUNG ,  Eun-Joung CHOI ,  Sang-Hee CHO ,  So-Mi PARK

IPC: H10K85/60 ,  H10K50/11

CPC classification number: H10K85/654 ,  H10K85/6574 ,  H10K85/6572 ,  H10K85/656 ,  H10K50/11

Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1, an organic electroluminescent material comprising the same and an organic electroluminescent device. By comprising an organic electroluminescent compound according to the present disclosure as a host material or an electron buffer material, or a specific combination of compounds as host materials, an organic electroluminescent device having improved drive voltage, luminous efficiency, and/or lifespan characteristics can be provided.