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1.发明公开公开(公告)号：US20240237380A1
公开(公告)日：2024-07-11
申请号：US17913474
申请日：2021-09-14
Inventor： Wenhai MEI , Jingwen FENG
IPC: H10K50/115 , H10K59/35 , H10K71/20 , H10K85/10 , H10K50/16
CPC classification number: H10K50/115 , H10K59/35 , H10K71/231 , H10K85/111 , H10K50/16
Abstract: A light-emitting substrate includes a plurality of light-emitting devices including at least one first light-emitting device and at least one second light-emitting device. A first light-emitting device in the at least one first light-emitting device includes a first color light-emitting layer. A second light-emitting device in the at least one second light-emitting device includes another first color light-emitting layer, and a first material layer and a second color light-emitting layer that are sequentially stacked on the another first color light-emitting layer. The first material layer is configured to transport holes transported from the first color light-emitting layer to the second color light-emitting layer, and to block electrons transported from the second color light-emitting layer; or the first material layer is configured to transport electrons transported from the first color light-emitting layer to the second color light-emitting layer, and to block holes transported from the second color light-emitting layer.
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2.发明公开公开(公告)号：US20240237379A1
公开(公告)日：2024-07-11
申请号：US17913224
申请日：2021-08-27
Inventor： Wenhai MEI
IPC: H10K50/115 , C09K11/06 , H10K71/12 , H10K85/60
CPC classification number: H10K50/115 , C09K11/06 , H10K71/12 , H10K85/631
Abstract: The present disclosure provides a light emitting device, a manufacturing method thereof, a display substrate, and a display apparatus. The light emitting device includes a first carrier transport layer, a light emitting layer and a second carrier transport layer sequentially stacked on a substrate, wherein the light emitting layer includes at least two quantum dot film layers, each of which includes quantum dots; the quantum dot film layer close to the first carrier transport layer further includes carrier auxiliary ligands, each of which is configured to be attached to a surface of a body of the quantum dot, and/or the quantum dot film layer close to the second carrier transport layer further includes carrier auxiliary ligands, each of which is configured to be attached to a surface of a body of the quantum dot.
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公开(公告)号：US20240224598A1
公开(公告)日：2024-07-04
申请号：US17916427
申请日：2021-11-09
Inventor： Wenhai MEI
IPC: H10K59/122 , H10K59/12 , H10K71/13 , H10K102/00
CPC classification number: H10K59/122 , H10K59/1201 , H10K71/135 , H10K2102/331
Abstract: A display substrate includes a substrate, first electrodes on the substrate, a first pixel defining layer on the substrate and having first openings, a second pixel defining layer on the first pixel defining layer and having second openings, and light-emitting functional layers on the first electrodes. Each first opening exposes at least a portion of a corresponding first electrode. A sidewall of the first opening is recessed in a direction away from a center of the first opening. On the substrate, an orthographic projection of each second opening at least partially overlaps with an orthographic projection of a corresponding first opening. On the substrate, a border of an orthographic projection of an end of the second opening proximate to the substrate is within a border of an orthographic projection of an end of the second opening away from the substrate. A light-emitting functional layer is in a first opening.
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公开(公告)号：US20240224573A1
公开(公告)日：2024-07-04
申请号：US18602672
申请日：2024-03-12
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Wenhai MEI , Yichi ZHANG
IPC: H10K50/165 , H10K50/11 , H10K50/115 , H10K59/12 , H10K59/35 , H10K71/00 , H10K101/00 , H10K101/30 , H10K101/40 , H10K102/00
CPC classification number: H10K50/165 , H10K50/11 , H10K59/35 , H10K71/00 , H10K50/115 , H10K59/1201 , H10K2101/30 , H10K2101/40 , H10K2101/80 , H10K2102/00 , H10K2102/331
Abstract: A light-emitting device includes: a first electrode and a second electrode that are superposed; a light-emitting layer (EML) located between the first electrode and the second electrode; and an electron transport layer (ETL) located between the first electrode and the EML. The ETL includes a first surface proximate to the EML and a second surface proximate to the first electrode, the ETL includes oxygen vacancies, and a concentration of oxygen vacancies in the first surface is greater than a concentration of oxygen vacancies in the second surface.
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公开(公告)号：US20240172467A1
公开(公告)日：2024-05-23
申请号：US17778869
申请日：2021-06-01
Inventor： Wenhai MEI
IPC: H10K50/16 , H10K71/10 , H10K85/10 , H10K102/00
CPC classification number: H10K50/16 , H10K71/10 , H10K85/111 , H10K85/1135 , H10K85/115 , H10K2102/331
Abstract: A material of an electron transport layer is provided in an embodiment of the present disclosure, wherein the electron transport layer material is a nanocomposite material formed of multiple carrier transport materials with different refractive indexes, and the refractive indexes of the multiple carrier transport materials increase or decrease along one direction, and refractive indexes of two adjacent carrier transport materials differ by more than 0.2.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20230263040A1
公开(公告)日：2023-08-17
申请号：US18139277
申请日：2023-04-25
Applicant: BOE Technology Group Co., Ltd.
Inventor： Wenhai MEI , Zhenqi ZHANG , Zhihong Wu
IPC: H10K71/00 , H10K50/115 , H10K71/20
CPC classification number: H10K71/00 , H10K50/115 , H10K71/20
Abstract: A method of patterning quantum dot layer includes: forming, on a substrate, a film layer including a photosensitive material and quantum dots with ligands on surfaces of the quantum dots; irradiating a quantum dot reserved area with light of a preset wavelength; where under irradiation with light of the preset wavelength, the photosensitive material or a product of the photosensitive material after light irradiation reacts with the ligands on the surfaces of the quantum dots, to allow the ligands to fall off from the surfaces of the quantum dots, so that solubility of the quantum dots is changed to cause the quantum dots to undergo coagulation; and removing a portion of the film layer which is not irradiated by the light of the preset wavelength, to form a patterned quantum dot portion of the quantum dot layer in the quantum dot reserved area.
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公开(公告)号：US20220165975A1
公开(公告)日：2022-05-26
申请号：US17427582
申请日：2020-09-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Wenhai MEI , Yichi ZHANG
Abstract: A light-emitting device includes: a first electrode and a second electrode that are superposed; an emitting layer (EML) located between the first electrode and the second electrode; and an electron transport layer (ETL) located between the first electrode and the EML. The ETL includes a first surface proximate to the EML and a second surface proximate to the first electrode, oxygen vacancies is formed in the ETL, and a concentration of oxygen vacancies in the ETL gradually increases from the second surface to the first surface.
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公开(公告)号：US20250145883A1
公开(公告)日：2025-05-08
申请号：US18578675
申请日：2022-07-01
Inventor： Wenhai MEI
IPC: C09K11/02 , H10K50/115
Abstract: Disclosed are a core-shell quantum dot, a quantum dot light-emitting device, a display apparatus and a manufacturing method. The core-shell quantum dot includes: a core part; a shell layer arranged on at least part of a surface of the core part, and including metal ions; and a chelating ligand connected with the metal ions, where the chelating ligand and the metal ions form a closed ring structure connected with the shell layer.
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9.发明公开公开(公告)号：US20240357848A1
公开(公告)日：2024-10-24
申请号：US18578666
申请日：2022-07-01
Inventor： Wenhai MEI
IPC: H10K50/115 , C07B59/00 , C09K11/02 , C09K11/06 , C09K11/58 , C09K11/60 , H10K50/15 , H10K101/30
CPC classification number: H10K50/115 , C07B59/004 , C09K11/02 , C09K11/06 , C09K11/58 , C09K11/60 , H10K50/15 , C09K2211/1007 , H10K2101/30
Abstract: Provided are a quantum dot material, a light-emitting device, a display apparatus, and a manufacturing method. The quantum dot material includes: a plurality of quantum dot bodies, a first ligand, and a second ligand. The first ligand is connected to the quantum dot body and includes: a first coordination group connected to the quantum dot body, a first connection structure, and a first coupling reaction structure. The first connection structure connected the first coordination group and with the first coupling reaction structure. The first coupling reaction structure includes a halide. The second ligand is connected to the quantum dot body and includes: a second coordination group connected to the quantum dot body, a second connection structure, and a second coupling reaction structure. The second connection structure connects the second coordination group with the second coupling reaction structure.
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10.发明公开公开(公告)号：US20240209255A1
公开(公告)日：2024-06-27
申请号：US17796310
申请日：2021-08-30
Inventor： Wenhai MEI
Abstract: The disclosure provides quantum dot materials, quantum dot light-emitting devices and preparation methods thereof. The quantum dot material comprises a quantum dot body and a quantum dot ligand forming a coordination interaction therewith, the quantum dot ligand satisfying a first general formula comprising:
wherein A is a ligand group, B is a first linkage group, C1 is a first polar group, C2 is a second polar group, D1 is a second linkage group, D2 is a third linkage group, E is a terminal group; m is an integer greater than or equal to 1; i is an integer greater than or equal to 1; the first linkage group comprises —(CH2)n—; the second and third linkage groups each comprise at least one of
and n is an integer greater than or equal to 0.
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