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公开(公告)号：US20250081722A1
公开(公告)日：2025-03-06
申请号：US18561324
申请日：2023-02-28
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xueqin CHEN , Lei CHEN , Dan WANG , Lixia QIU
IPC: H10K50/19 , H10K50/16 , H10K50/18 , H10K85/60 , H10K101/40 , H10K102/00
Abstract: The present disclosure provides a light emitting device and a display panel, and belongs to the field of display technology. The light emitting device includes an anode, a cathode, a plurality of light emitting units between the anode and the cathode, and a charge separation generation unit between every two adjacent light emitting units; the plurality of light emitting units include a first light emitting unit and a second light emitting unit, and the first light emitting unit is closer to the anode than the second light emitting unit; and the first light emitting unit at least includes a first electron transport sub-unit, the second light emitting unit at least includes a second electron transport sub-unit, and a thickness of the first electron transport sub-unit is less than that of the second electron transport sub-unit.
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公开(公告)号：US20240334817A1
公开(公告)日：2024-10-03
申请号：US18577245
申请日：2022-07-01
Applicant: BOE Technology Group Co., Ltd.
Inventor： Lixia QIU , Lei CHEN , Dongxu ZHANG , Bingyan LIANG
IPC: H10K85/60 , H10K50/12 , H10K50/125 , H10K85/30 , H10K101/25 , H10K101/30 , H10K101/40 , H10K102/00
CPC classification number: H10K85/633 , H10K50/12 , H10K50/125 , H10K85/324 , H10K85/342 , H10K85/346 , H10K85/371 , H10K85/623 , H10K85/636 , H10K85/6574 , H10K85/6576 , H10K2101/25 , H10K2101/30 , H10K2101/40 , H10K2102/351
Abstract: An organic electroluminescent device, a display panel, and a display device are disclosed. The organic electroluminescent device includes: an anode and a cathode disposed opposite to each other, a light emitting layer located between the anode and the cathode, an electron blocking layer located between the light emitting layer and the anode, and a hole transport layer located between the electron blocking layer and the anode. The light emitting layer includes an exciplex formed by mixing an electron-type host material and a hole-type host material, and a guest material with which the exciplex is doped. The electron mobility of the hole transport layer is greater than that of the electron blocking layer.
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公开(公告)号：US20230209855A1
公开(公告)日：2023-06-29
申请号：US17927954
申请日：2021-10-25
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yang LIU , Xueqin CHEN , Lixia QIU
CPC classification number: H10K50/121 , H10K85/626 , H10K85/633 , H10K85/636 , H10K85/6574 , H10K2101/25
Abstract: A light-emitting device includes a light-emitting layer. The light-emitting layer includes a host material. The host material includes a p-type material and an n-type material. The p-type material and the n-type material are configured to form an exciplex. An absolute value of a difference between a wavelength corresponding to a peak of a normalized fluorescence emission spectrum of the exciplex and a wavelength corresponding to a peak of a normalized fluorescence emission spectrum of the n-type material being less than or equal to 5 nm.
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公开(公告)号：US20220376198A1
公开(公告)日：2022-11-24
申请号：US17439406
申请日：2020-12-11
Applicant: BOE Technology Group Co., Ltd.
Abstract: Provided are an organic light emitting device and a display apparatus. An organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material includes a first host material and a second host material, and the first host material, the second host material, the electron block layer, and the hole block layer satisfy: |HOMO1-host-HOMOEBL|≤0.2 eV,|LUMOHBL-LUMO2-host|≤0.2 eV, wherein, HOMO1-host is a HOMO energy level of the first host material; HOMOEBL is a HOMO energy level of the electron block layer; LUMO2-host is a LUMO energy level of the second host material, and LUMOHBL is a LUMO energy level of the hole block layer.
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公开(公告)号：US20250092007A1
公开(公告)日：2025-03-20
申请号：US18291588
申请日：2022-09-14
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yuqian SUN , Lixia QIU , Yang LIU
IPC: C07D311/96 , C07C211/61 , C07D217/18 , C07D263/64 , C07D405/12 , C07D413/14 , H10K50/15 , H10K50/17 , H10K50/18
Abstract: An arylamine compound and use thereof, an electroluminescent device and a display apparatus are provided, the arylamine compound has a general structural formula of Formula I; wherein each group and substituent have the same meaning as that in the description.
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Patent Agency Ranking
公开(公告)号：US20240389453A1
公开(公告)日：2024-11-21
申请号：US18271050
申请日：2022-04-28
Applicant: BOE Technology Group Co., Ltd.
Inventor： Haiyan SUN , Xiaojin ZHANG , Lixia QIU , Dan WANG
IPC: H10K85/60 , C09K11/06 , H10K50/11 , H10K50/16 , H10K101/40 , H10K102/00
Abstract: The present disclosure provides an organic electroluminescent diode, and belongs to the field of display technology. The organic electroluminescent diode includes an anode, a light emitting layer, a hole blocking layer, an electron transport layer, and a cathode, which are stacked in sequence; wherein the light emitting layer comprises a host material, a TADF material, and a fluorescent dopant material; the host material is selected from the compound represented by Chemical Formula 1, and the material of the hole blocking layer is selected from the compound represented by Chemical Formula 2: The organic electroluminescence diode can improve the lifetime of the diode.
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7.发明公开公开(公告)号：US20230413591A1
公开(公告)日：2023-12-21
申请号：US18036153
申请日：2020-11-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yang LIU , Xueqin CHEN , Yuqian SUN , Lixia QIU , Dongxu ZHANG
CPC classification number: H10K50/12 , H10K50/181 , H10K71/60 , H10K85/633 , H10K85/622 , H10K85/6574 , H10K2101/40
Abstract: An organic light-emitting diode includes: an anode, a cathode and a light-emitting layer between the anode and the cathode. The light-emitting layer has a blue light host material; on the side of the light-emitting layer facing the anode, an electron blocking layer is provided in the direction away from the light-emitting layer; the electron blocking layer has a hole material; and the hole material has a structural formula as shown in the following formula (I), and the blue light host material has a structural formula as shown in the following formula (II).
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公开(公告)号：US20230269957A1
公开(公告)日：2023-08-24
申请号：US17921318
申请日：2021-07-05
Applicant: BOE Technology Group Co., Ltd.
CPC classification number: H10K50/16 , H10K50/12 , H10K50/18 , H10K59/35 , H10K2101/30
Abstract: An organic electroluminescent device, a display panel and a display apparatus. The organic electroluminescent device comprises: an anode and a cathode, which are arranged opposite each other; an organic electroluminescent layer, which is located between the anode and the cathode; a hole blocking layer, which is located between the organic electroluminescent layer and the cathode; and an electron transport layer, which is located between the hole blocking layer and the cathode, wherein the organic electroluminescent layer comprises: an exciplex formed by means of mixing an electron-type light-emitting host material and a hole-type light-emitting host material, and a light-emitting guest material doped in the exciplex; and the electron mobility of the electron transport layer is greater than that of the hole blocking layer, and the electron mobility of the hole blocking layer is greater than that of the electron-type light-emitting host material.
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公开(公告)号：US20220367826A1
公开(公告)日：2022-11-17
申请号：US17432161
申请日：2020-11-19
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Abstract: The present disclosure provides an organic light-emitting diode and a display panel, the organic light-emitting diode including: a first electrode, a second electrode, a light-emitting layer, a hole blocking layer and an electron transport layer; the first electrode and the second electrode are oppositely arranged; the light-emitting layer is between the first electrode and the second electrode; the hole blocking layer is between the light-emitting layer and the second electrode; the electron transport layer is between the hole transport layer and the second electrode, wherein the energy level difference between the HOMO energy level of the hole blocking layer and the HOMO energy level of the light-emitting layer is larger than or equal to 0.1 eV, and the energy level difference between the HOMO energy level of the electron transport layer and the HOMO energy level of the hole blocking layer is larger than or equal to 0.1 eV.
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公开(公告)号：US20250081846A1
公开(公告)日：2025-03-06
申请号：US18279218
申请日：2022-11-29
Applicant: BOE Technology Group Co., Ltd.
Inventor： Rongrong GAO , Dan WANG , Lei CHEN , Lixia QIU , Yuqian SUN
IPC: H10K85/60 , H10K50/15 , H10K50/18 , H10K101/40
Abstract: An organic light emitting device includes an anode, a cathode, and a first hole transport layer and a first light emitting layer arranged between the anode and the cathode, wherein the first hole transport layer is located between the first light emitting layer and the anode; the first hole transport layer at least includes a first hole sublayer and a second hole sublayer; a material of the first hole sublayer includes a first material and a second material, and a material of the second hole sublayer includes at least one of the first material and the second material.
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