公开(公告)号：US20210119168A1

公开(公告)日：2021-04-22

申请号：US17131555

申请日：2020-12-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： MINSOO CHOI ,  MINJE KIM ,  EUNG DO KIM ,  HYUNYOUNG KIM ,  HYOJEONG KIM ,  HYOSUP SHIN ,  SEOKGYU YOON ,  YOUNGKI LEE ,  JUNGSUB LEE ,  JIYOUNG LEE ,  HYEJIN JUNG ,  KUNWOOK CHO ,  HYEON GU CHO ,  YOUNGEUN CHOI ,  JAEJIN LYU

IPC: H01L51/50 ,  H01L51/00 ,  C09K11/06

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a host having a first luminescent onset wavelength, a first dopant having a second luminescent onset wavelength, and a second dopant different from the first dopant and having a third luminescent onset wavelength. The third luminescent onset wavelength is greater than each of the first luminescent onset wavelength and the second luminescent onset wavelength, and the device has improved emission efficiency and/or long-lifespan characteristics.

公开(公告)号：US20210098716A1

公开(公告)日：2021-04-01

申请号：US17035552

申请日：2020-09-28

Applicant: Samsung Display Co., Ltd.

Inventor： JUNGSUB LEE ,  HYUNYOUNG KIM ,  JIYOUNG LEE ,  HYEJIN JUNG ,  MINJE KIM ,  EUNG DO KIM ,  HYOJEONG KIM ,  HYOSUP SHIN ,  SEOKGYU YOON ,  YOUNGKI LEE ,  KUNWOOK CHO ,  HYEON GU CHO ,  MINSOO CHOI ,  YOUNGEUN CHOI ,  HYEIN JEONG ,  JAEJIN LYU

IPC: H01L51/00

Abstract: An organic electroluminescence device according to an embodiment of the present disclosure includes a first electrode, a second electrode, and an emission layer. The emission layer includes host compounds and dopant compounds. The hot compounds include a first host compound represented by Formula 1, and a second host compound represented by Formula 2, and the dopant compounds include an assistant dopant compound represented by Formula 3, and a light-emitting dopant compound represented by Formula 4: Accordingly, the organic electroluminescence device according to an embodiment may achieve high efficiency and long life.

公开(公告)号：US20240284794A1

公开(公告)日：2024-08-22

申请号：US18402544

申请日：2024-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： MINJE KIM ,  SERAN KIM ,  CHANSEOK OH ,  JIYOUNG LEE ,  EUNG DO KIM ,  CHANGWOONG CHU

IPC: H10K85/60 ,  C07F5/02 ,  C09K11/06

CPC classification number: H10K85/658 ,  C07F5/027 ,  C09K11/06 ,  C07B2200/05 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/90

Abstract: A light emitting element includes a first electrode, a second electrode, and an emission layer which is disposed between the first electrode and the second electrode and includes a compound represented by Formula 1, thereby exhibiting long service life and high efficiency characteristics.

公开(公告)号：US20210098714A1

公开(公告)日：2021-04-01

申请号：US16906991

申请日：2020-06-19

Applicant: Samsung Display Co., Ltd.

Inventor： MINSOO CHOI ,  MINJE KIM ,  EUNG DO KIM ,  HYUNYOUNG KIM ,  HYOJEONG KIM ,  HYOSUP SHIN ,  SEOKGYU YOON ,  YOUNGKI LEE ,  JUNGSUB LEE ,  JIYOUNG LEE ,  HYEJIN JUNG ,  KUNWOOK CHO ,  HYEON GU CHO ,  YOUNGEUN CHOI ,  JAEJIN LYU

IPC: H01L51/00

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a host having a first luminescent onset wavelength, a first dopant having a second luminescent onset wavelength, and a second dopant different from the first dopant and having a third luminescent onset wavelength. The third luminescent onset wavelength is greater than each of the first luminescent onset wavelength and the second luminescent onset wavelength, and the device has improved emission efficiency and/or long-lifespan characteristics.

公开(公告)号：US20230129321A1

公开(公告)日：2023-04-27

申请号：US17748389

申请日：2022-05-19

Applicant: Samsung Display Co., Ltd.

Inventor： HYUNAH UM ,  MINJE KIM ,  YOUNGJIN PARK ,  HEECHOON AHN ,  Juhui YUN ,  YESEUL LEE ,  YIRANG IM

IPC: H01L51/00

Abstract: A light emitting element according to an embodiment includes a first electrode, a second electrode disposed on the first electrode, an emission layer disposed between the first electrode and the second electrode, and a double buffer layer including a first layer disposed on the emission layer and a second layer disposed on the first layer. The first layer includes a first compound, the second layer includes a second compound which is different from the first compound, and the first compound and the second compound are each independently represented by Formula 1 or Formula 2, thereby contributing to increased efficiency and increased life of a light emitting element.

公开(公告)号：US20220131086A1

公开(公告)日：2022-04-28

申请号：US17365763

申请日：2021-07-01

Applicant: Samsung Display Co., Ltd.

Inventor： JIYOUNG LEE ,  HYOSUP SHIN ,  MINJE KIM ,  HYOJEONG KIM

IPC: H01L51/00 ,  C09K11/06

Abstract: An organic electroluminescence device includes a first electrode, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a first host, a first dopant, and a second dopant different from the first dopant, the first dopant and the second dopant are compounds each independently exhibiting thermally activated delayed fluorescence, the first dopant has a delayed fluorescence lifetime (τ) value of about 2.6 μs to about 5.0 μs, and the first host, the first dopant, and the second dopant satisfy Equation 1 defined in the detailed description, thereby exhibiting increased efficiency and lifetime characteristics.