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公开(公告)号：US20230380278A1
公开(公告)日：2023-11-23
申请号：US18027500
申请日：2021-01-06
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xinghua LIU , Xiaojin ZHANG , Haiyan SUN , Yong WU
CPC classification number: H10K85/6572 , H10K85/631 , H10K85/654 , H10K50/15 , H10K50/181
Abstract: Provided is a light-emitting diode. The light-emitting diode includes: an anode; a hole transport layer, disposed on a side of the anode and containing a hole transport material, wherein the hole transport material includes an organic small molecule material with a molecular weight less than 4000, and a hole mobility of the hole transport material is not less than 1×E−5 cm2/(VS); a light-emitting layer, disposed on a side, distal from the anode, of the hole transport layer, and containing a quantum dot material; an electron buffer layer, disposed on a side, distal from the hole transport layer, of the light-emitting layer, and containing a thermally activated delayed fluorescent material; and a cathode, disposed on a side, distal from the light-emitting layer, of the electron buffer layer.
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2.发明公开公开(公告)号：US20230301172A1
公开(公告)日：2023-09-21
申请号：US18021548
申请日：2022-03-03
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xinghua LIU , Xiaojin ZHANG , Haiyan SUN
CPC classification number: H10K85/40 , H10K85/654 , H10K85/6572 , H10K85/633 , H10K85/658 , C09K11/02 , C09K11/06 , H10K85/615 , H10K85/6574 , H10K50/157 , H10K50/181 , H10K50/171 , H10K2101/20
Abstract: Provided in the present disclosure are a thermally activated delayed fluorescent material, an organic light-emitting device and a display apparatus. The energy level difference between a singlet energy level and a triplet energy level of the thermally activated delayed fluorescent material is less than 0.3 eV, and a spin-orbit coupling value SOC between a singlet state and a triplet state of the thermally activated delayed fluorescent material is SOC≤0.05 cm−1.
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公开(公告)号：US20220271252A1
公开(公告)日：2022-08-25
申请号：US17532502
申请日：2021-11-22
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xinghua LIU , Xiaojin ZHANG , Haiyan SUN
Abstract: The present disclosure relates to an organic light emitting device, a display device, a preparation method, a storage medium and a computer equipment. The organic light emitting device includes an anode, an organic layer and a cathode, in which the organic layer includes a hole injection layer, a hole transport layer, an electron blocking layer, an organic light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, which are sequentially arranged in a stack on the anode, in which the hole injection layer includes a first host material and a first doping material doped in the first host material, a doping concentration of the first doping material gradually decreases in a direction away from the anode, and a doping ratio of the first doping material in the hole injection layer is less than or equal to 6%.
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4.发明申请公开(公告)号：US20220263052A1
公开(公告)日：2022-08-18
申请号：US17733289
申请日：2022-04-29
Applicant: BOE Technology Group Co., Ltd.
Inventor： Haiyan SUN
Abstract: The present disclosure provides an organic light-emitting diode display panel, a method for preparing the same, and a display device. The organic light-emitting diode display panel includes a substrate, a light-emitting structure layer arranged on the substrate, and a light modulation layer arranged on a light exiting path of the light-emitting structure layer and configured to adjust a direction of an emergent light beam.
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公开(公告)号：US20220102648A1
公开(公告)日：2022-03-31
申请号：US17462859
申请日：2021-08-31
Applicant: BOE Technology Group Co., Ltd.
Inventor： Siqi WANG , Haiyan SUN , Xiaojin ZHANG
IPC: H01L51/00
Abstract: Organic light-emitting devices, display panels and display apparatuses are provided. An organic light-emitting device includes: a first electrode layer; a first light-emitting layer provided on the first electrode layer and including a first host material and a first guest material; a second light-emitting layer provided on the first light-emitting layer and including a second host material and a second guest material; and a second electrode layer provided on the second light-emitting layer. The first guest material has a general structural formula as indicated in Formula I. X is selected from carbon, nitrogen, oxygen, sulfur, or boron; Y is selected from nitrogen or boron, and Y is different from X; and R1 and R2 are selected from hydrogen, methyl, isopropyl, tert-butyl, substituted or unsubstituted aryl, substituted or unsubstituted alkyl aryl, or substituted or unsubstituted nitrogen-containing aryl, respectively.
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Patent Agency Ranking
公开(公告)号：US20250098400A1
公开(公告)日：2025-03-20
申请号：US18576367
申请日：2023-05-17
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Haiyan SUN , Xiaojin ZHANG , Dan WANG
IPC: H10K50/125 , H10K50/12 , H10K85/30 , H10K101/00 , H10K101/10 , H10K101/40
Abstract: A light-emitting device is provided, and the light-emitting device includes a first electrode, a second electrode and at least two light-emitting units. The first electrode and the second electrode are arranged in a first direction in sequence. The at least two light-emitting units are disposed between the first electrode and the second electrode, and are arranged in a second direction, and the second direction intersects the first direction. Photons emitted by each light-emitting unit of the at least two light-emitting units include first luminescent photons and second luminescent photons. Emission time of the first luminescent photons is less than emission time of the second luminescent photons. The number of second luminescent photons emitted by at least one light-emitting unit is less than or equal to the number of first luminescent photons emitted by the at least one light-emitting unit.
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公开(公告)号：US20220310920A1
公开(公告)日：2022-09-29
申请号：US17419306
申请日：2020-09-28
Applicant: BOE Technology Group Co., Ltd.
Inventor： Haiyan SUN , Meishan XU , Dan WANG , Changho LEE
IPC: H01L51/00
Abstract: An organic light emitting device and a display apparatus are provided. The organic light emitting device includes an anode, a cathode and a light-emitting layer arranged between the anode and the cathode, wherein a doped structure layer is arranged between the anode and the light-emitting layer, the doped structure layer comprises a host material and a guest material doped in the host material, and the host material and the guest material satisfy: −1.5eV
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公开(公告)号：US20250133898A1
公开(公告)日：2025-04-24
申请号：US18705592
申请日：2023-05-17
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Haiyan SUN , Xiaojin ZHANG , Dan WANG
IPC: H10K50/12 , H10K85/30 , H10K85/40 , H10K85/60 , H10K101/00 , H10K101/10 , H10K101/40
Abstract: A light-emitting device includes at least one light-emitting unit. A light-emitting layer of the at least one light-emitting unit includes a first host material, a second host material, and a first light-emitting material. Photons emitted by the first light-emitting material include photons emitted due to energy obtained by fluorescence resonance energy transfer of the first and/or second host material and photons emitted due to excitons formed by recombination of electrons and holes. A ratio of a number of the photons emitted by the first light-emitting material to a number of photons emitted by the light-emitting layer is greater than 80%; a ratio of a number of the photons emitted by the first light-emitting material due to the energy obtained by fluorescence resonance energy transfer of the first and/or second host material to the number of the photons emitted by the first light-emitting material is greater than 60%.
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公开(公告)号：US20240206296A1
公开(公告)日：2024-06-20
申请号：US17794628
申请日：2021-08-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xiaojin ZHANG , Siqi WANG , Haiyan SUN
IPC: H10K59/80 , H10K59/50 , H10K85/10 , H10K102/00
CPC classification number: H10K59/8791 , H10K59/50 , H10K59/879 , H10K85/111 , H10K2102/351
Abstract: A display substrate includes a light emitting element disposed on a base substrate, and a light dimming structure layer and an anti-reflection layer stacked sequentially at a light exiting side of the light emitting element, wherein the light dimming structure layer includes a polarizing film layer configured to convert at least a portion of light emitted by the light emitting element incident onto the polarizing film layer into circularly polarized light with a set rotational direction to pass through the polarizing film layer; the anti-reflection layer includes a phase retarder and a linear polarizer which are stacked sequentially along a direction away from the base substrate, the phase retarder being configured to convert the circularly polarized light passing through the polarizing film layer into linearly polarized light, a polarization direction of which is parallel to a direction of a light transmission axis of the linear polarizer.
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公开(公告)号：US20220310955A1
公开(公告)日：2022-09-29
申请号：US17419307
申请日：2020-09-28
Applicant: BOE Technology Group Co., Ltd.
Inventor： Meishan XU , Haiyan SUN , Dan WANG , Changho LEE
Abstract: An organic light emitting device and a display apparatus are provided. The organic light emitting device includes an anode, a cathode and a light-emitting layer arranged between the anode and the cathode, wherein a first hole injection layer and a second hole injection layer are arranged between the anode and the light-emitting layer. The first hole injection layer and the second hole injection layer are different in structure, including one or more of the following: the first hole injection layer and the second hole injection layer are different in thickness, different in material structure, different in quantity of the material and number of types of the material, and different in energy level of the material.
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