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公开(公告)号：US20230413666A1
公开(公告)日：2023-12-21
申请号：US18249997
申请日：2020-12-08
Applicant: BOE Technology Group Co., Ltd.
Inventor： Rongrong GAO , Xinghua LIU , Dongxu ZHANG
CPC classification number: H10K85/654 , H10K71/16 , H10K85/6574 , H10K85/615 , H10K85/624 , H10K85/40 , H10K85/6576 , H10K85/657 , H10K50/16
Abstract: Embodiments of the present invention provide an OLED device and a manufacturing method. The OLED device comprises: an anode; a hole transport layer; a light-emitting layer; an electron transport layer comprising a first electron transport body and a second electron transport body, wherein the first electron transport body has a spiral structure, the second electron transport body has a continuous π conjugated system formed by fusing a dioxin structure and a benzoheterocyclic structure, the electron mobility of the first electron transport body is less than the electron mobility of the second electron transport body, the electron mobility of the second electron transport body is 10−5-10−8 cm2V−1s−1@5000 V1/2/m1/2, the triplet-state energy level of the first electron transport body is greater than the triplet-state energy level of the second electron transport body, and the triplet-state energy level of the first electron transport body is greater than 2.4 eV; and a cathode.
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公开(公告)号：US20230125001A1
公开(公告)日：2023-04-20
申请号：US17610690
申请日：2021-01-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Kun MA , Lei CHEN , Rongrong GAO
Abstract: The present disclosure provides an organic light emitting device, including a first electrode, a second electrode and an emitting layer disposed between the first electrode and the second electrode. A hole transporting layer is disposed between the first electrode and the emitting layer. An electron transporting layer is disposed between the second electrode and the emitting layer. The ratio of the hole mobility of the hole transporting layer to the electron mobility of the electron transporting layer is about 10 to 500.
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公开(公告)号：US20220320468A1
公开(公告)日：2022-10-06
申请号：US17526867
申请日：2021-11-15
Inventor： Junming ZHU , Lei CHEN , Kun MA , Rongrong GAO , Juncong LI
IPC: H01L51/52
Abstract: A display substrate and a display device are provided. The display substrate includes: a base substrate; and a light-emitting element arranged on the base substrate, and including a first electrode, an organic functional layer and a second electrode arranged sequentially in that order in a direction away from the base substrate. The light-emitting element includes a first surface proximate to the base substrate, a second surface distal to the base substrate, and a side surface arranged between the first surface and the second surface. The display substrate further includes a reflection layer covering at least a part of the side surface and configured to reflect light from the organic functional layer.
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公开(公告)号：US20250048919A1
公开(公告)日：2025-02-06
申请号：US18710615
申请日：2023-07-18
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Rongrong GAO , Dan WANG , Lei CHEN
IPC: H10K85/60 , C07C211/60 , C07C211/61 , C07D251/24 , C07D311/96 , C07D401/14 , C07D405/04 , C07D405/10 , C07F9/46 , C07F9/6521 , H10K50/13 , H10K50/19
Abstract: A functional layer material includes a compound centered on an sp3 hybridized carbon atom which includes a first type of compound. The first type of compound is selected from any of structures represented by a general formula (I), wherein at least one of a, b, m and n is not 0; A1 and A2 are independently selected from any of a substituted or unsubstituted trivalent aryl group, fused ring trivalent aryl group and fused ring trivalent heteroaryl group; B1 and B2 are independently selected from any of a substituted or unsubstituted alkylene group, arylene group and heteroarylene group; L1 to L4 are independently selected from any of a single bond, a substituted or unsubstituted phenylene group and biphenylene group; and Ar1 to Ar8 are independently selected from any one of a substituted or unsubstituted alkyl group, aryl group, heteroaryl group, fused ring aryl group and fused ring heteroaryl group.
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公开(公告)号：US20240298463A1
公开(公告)日：2024-09-05
申请号：US18662938
申请日：2024-05-13
Inventor： Junming ZHU , Lei CHEN , Kun MA , Rongrong GAO , Juncong LI
IPC: H10K50/856 , H10K102/00
CPC classification number: H10K50/856 , H10K2102/351
Abstract: A display substrate and a display device are provided. The display substrate includes: a base substrate; and a light-emitting element arranged on the base substrate, and including a first electrode, an organic functional layer and a second electrode arranged sequentially in that order in a direction away from the base substrate. The light-emitting element includes a first surface proximate to the base substrate, a second surface distal to the base substrate, and a side surface arranged between the first surface and the second surface. The display substrate further includes a reflection layer covering at least a part of the side surface and configured to reflect light from the organic functional layer.
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Patent Agency Ranking
公开(公告)号：US20230043738A1
公开(公告)日：2023-02-09
申请号：US17787471
申请日：2021-08-04
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yong WU , Siqi WANG , Rongrong GAO
IPC: H01L51/50
Abstract: The present invention provides an organic electroluminescent device, a display panel, and a display apparatus. A light-emitting layer comprises a first compound, a second compound, a third compound, and a fourth compound; the first compound and the second compound form a first exciplex under optical excitation and electric excitation; excitonic energy compounded by the first exciplex can be transferred to the third compound; then the third compound and the second compound are compounded to form a second exciplex; and excitonic energy compounded by the second exciplex can be transferred to the fourth compound. In the excitonic energy transfer process, triplet excitons improve a reverse intersystem crossing process and are converted into singlet excitons to radiate and emit fluorescence when an exciplex is formed by means of compounding; the singlet excitons are effectively used for Forster energy transfer, and Dexter energy transfer is inhibited, such that energy loss is avoided, the excitonic energy is effectively used, and the device efficiency is improved.
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公开(公告)号：US20250098405A1
公开(公告)日：2025-03-20
申请号：US18290032
申请日：2023-02-24
Inventor： Juncong LI , Rongrong GAO , Xianwen MENG
IPC: H10K50/852 , C09K11/06 , H10K50/16 , H10K50/858
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 a first electrode, a second electrode and a light emitting functional layer arranged between the first electrode and the second electrode; the light emitting functional layer at least includes an electron transport layer and a hole blocking layer; the electron transport layer has a refractive index between 1.6 and 1.9, and an optical thickness in a range from 540 Å to 700 Å; and a difference between the refractive index of the electron transport layer and a refractive index of the hole blocking layer is less than or equal to 0.1.
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8.发明公开公开(公告)号：US20230292537A1
公开(公告)日：2023-09-14
申请号：US18014853
申请日：2021-11-22
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Kun MA , Rongrong GAO , Dan WANG
CPC classification number: H10K50/11 , H10K59/95 , H10K85/6572 , H10K50/16 , H10K2101/25
Abstract: A light-emitting device that emits green light includes a first electrode and a second electrode that are arranged in sequence, and a light-emitting layer disposed between the first electrode and the second electrode, the light-emitting layer includes a first host material and a second host material; the first host material and the second host material form an exciplex, a difference between a lowest unoccupied molecular orbital (LUMO) energy level of the first host material and a LUMO energy level of the second host material is greater than or equal to 0.5 eV, under a same test condition, a difference between an order of magnitude of a hole mobility of the first host material and an order of magnitude of an electron mobility of the second host material is greater than or equal to 1.
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公开(公告)号：US20230100815A1
公开(公告)日：2023-03-30
申请号：US17788219
申请日：2021-05-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Rongrong GAO , Kun MA
Abstract: A light-emitting device includes a first electrode, a second electrode and a light-emitting layer arranged between the first electrode and the second electrode. The light-emitting layer includes a thermally activated delayed fluorescence (TADF) material, and the TADF material includes a donor, an acceptor, and a linking group connected between the donor and the acceptor. The donor includes a donor base unit, and a substituent connected to the donor base unit, and atoms in the donor base unit are located in a first plane. The acceptor includes an acceptor base unit, and a substituent connected to the acceptor base unit, and atoms in the acceptor base unit are located in a second plane. The linking group includes a linking base unit, and a substituent connected to the linking base unit, and atoms in the linking base unit are located in a third plane.
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公开(公告)号：US20230006008A1
公开(公告)日：2023-01-05
申请号：US17772449
申请日：2021-06-16
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Kun MA , Xiaojin ZHANG , Dan WANG , Meng ZHAO , Rongrong GAO
Abstract: A display substrate includes a backplane, a pixel defining layer, a gas absorption layer, and light-emitting layers. The pixel defining layer is disposed on a side of the backplane, and has a plurality of openings. The gas absorption layer is disposed on a side of the pixel defining layer away from the backplane, and is configured to absorb a gas generated by the pixel definition layer due to an action of ultraviolet rays. The gas absorption layer exposes at least part of regions of the plurality of openings. The light-emitting layers are each at least partially located in an opening in the plurality of openings.
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