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公开(公告)号：US20240130222A1
公开(公告)日：2024-04-18
申请号：US18528604
申请日：2023-12-04
Applicant: Samsung Display Co., Ltd.
Inventor： Hyejin JUNG , Minje KIM , EUNG DO KIM , Hyunyoung KIM , Hyojeong KIM , HYOSUP SHIN , SEOKGYU YOON , Youngki LEE , JUNGSUB LEE , Jiyoung LEE , Kunwook CHO , HYEON GU CHO , Minsoo CHOI , Youngeun CHOI , HYEIN JEONG
CPC classification number: H10K85/40 , H10K85/322 , H10K85/342 , H10K85/346 , H10K85/654 , H10K85/6572 , H10K85/6574 , H10K85/6576 , H10K50/11
Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode on the first electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a first host and a second host which are different from each other, a first dopant including an organic metal complex containing Ir, Ru, Rh, Pt, Pd, Cu, or Os as a central metal atom, and a second dopant represented by Formula D-2 below, and thereby the organic electroluminescence device may exhibit high luminous efficiency and long service life characteristics.
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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
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.
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公开(公告)号：US20230138754A1
公开(公告)日：2023-05-04
申请号：US17857616
申请日：2022-07-05
Applicant: Samsung Display Co., Ltd.
Inventor： JIYOUNG LEE , TSUYOSHI NAIJO , JANG YEOL BAEK , HYOSUP SHIN
Abstract: A light emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes a hole transporting host, an electron transporting host, a phosphorescent sensitizer, and a fluorescent dopant, wherein the fluorescent dopant emits light having a full width at half maximum (FWHM) equal to or less than about 20 nm. The fluorescent dopant may include a compound represented by Formula 1. Accordingly, the light emitting element according to an embodiment may exhibit enhanced color purity and long service life characteristics.
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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
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.
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公开(公告)号：US20240357852A1
公开(公告)日：2024-10-24
申请号：US18587624
申请日：2024-02-26
Applicant: Samsung Display Co., Ltd.
Inventor： SUNG-SOO BAE , TSUYOSHI NAIJO , SANG GYUN KIM , HOJUNG SYN , HYOSUP SHIN , JIYOUNG LEE , CHANGWOONG CHU
CPC classification number: H10K50/171 , C09K11/06 , H10K50/18 , H10K59/353 , H10K85/342 , H10K85/346 , H10K85/626 , H10K85/631 , H10K85/654 , H10K85/6572 , H10K2102/351
Abstract: A light emitting element includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region. The electron transport region includes an electron transport layer on the emission layer, a first electron injection layer on the electron transport layer, and a second electron injection layer on the first electron injection layer, the thicknesses of the first and second electron injection layers are each about 1 nm to about 5 nm, the first electron injection layer includes a phenanthroline derivative and/or a phosphine oxide derivative, and the second electron injection layer includes a metal material.
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Patent Agency Ranking
公开(公告)号：US20240341184A1
公开(公告)日：2024-10-10
申请号：US18436263
申请日：2024-02-08
Applicant: Samsung Display Co., Ltd.
Inventor： JIYOUNG LEE , TSUYOSHI NAIJO , YUNJEE PARK , SUNG-SOO BAE , HOJUNG SYN , HYOSUP SHIN , CHANGWOONG CHU
CPC classification number: H10K85/658 , C09K11/06 , H10K85/346 , H10K85/40 , H10K85/6572 , C09K2211/1018 , C09K2211/1044 , C09K2211/185 , H10K50/121 , H10K50/13 , H10K85/654
Abstract: Embodiments provide a light emitting element and a display device including the same. The light emitting element includes a first electrode, a second electrode, and a plurality of emission layers disposed between the first electrode and the second electrode, wherein at least one of the plurality of emission layers include a hole transporting host, an electron transporting host, a phosphorescent sensitizer, and a first fluorescent dopant. The first fluorescent dopant comprises a pentacyclic fused ring core that includes one boron atom and two heteroatoms as ring-forming atoms, and at least one amine substituent of the fused ring core; the at least one amine substituent is substituted with at least one substituted or unsubstituted pyrenyl group; and a difference between a triplet state energy level of the first fluorescent dopant and a singlet state energy level of the first fluorescent dopant is equal to or greater than about 0.4 eV.
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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.
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公开(公告)号：US20240215286A1
公开(公告)日：2024-06-27
申请号：US18518166
申请日：2023-11-22
Applicant: Samsung Display Co., LTD.
Inventor： HYOSUP SHIN , TSUYOSHI NAIJO , YUNJEE PARK , SUNG-SOO BAE , HOJUNG SYN , JIYOUNG LEE , CHANGWOONG CHU
IPC: H10K50/12
CPC classification number: H10K50/121 , H10K2101/90
Abstract: A light emitting device of an embodiment includes a first light emitting unit including a first emission layer, and a second light emitting unit including a second emission layer. The first emission layer includes a first host, a phosphorescence sensitizer, a first fluorescence dopant, the second emission layer includes a second host which is different from the first host, and a second fluorescence dopant, the first fluorescence dopant has a highest occupied molecular orbital (HOMO) energy level of about −5.2 eV or less, and the second fluorescence dopant has a HOMO energy level of about −5.2 eV or more.
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公开(公告)号：US20230127039A1
公开(公告)日：2023-04-27
申请号：US17889217
申请日：2022-08-16
Applicant: Samsung Display Co., Ltd.
Inventor： TSUYOSHI NAIJO , HYOSUP SHIN , JIYOUNG LEE
Abstract: A light emitting element includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a hole transporting host, an electron transporting host, a phosphorescent sensitizer, and a delayed fluorescent dopant. The delayed fluorescent dopant may have a greater absolute value of the HOMO energy level than the hole transporting host. Accordingly, the light emitting element including the delayed fluorescent dopant in an embodiment may exhibit long lifespan.
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公开(公告)号：US20220328766A1
公开(公告)日：2022-10-13
申请号：US17683546
申请日：2022-03-01
Applicant: Samsung Display Co., Ltd.
Inventor： HYOSUP SHIN , JIYOUNG LEE , HYUNYOUNG KIM , TSUYOSHI NAIJO
IPC: H01L51/00
Abstract: Provided is a light emitting diode including a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode and including a polycyclic compound represented by Formula 1, thereby exhibiting high luminous efficiency and improved lifespan characteristics.
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