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公开(公告)号：US20250126970A1
公开(公告)日：2025-04-17
申请号：US18577969
申请日：2023-03-16
Inventor： Shun Wang , Hao Gao , Yansong Li , Cheng Han , Yan Fan , Xiangmin Wen , Bingwei Yang
Abstract: A light-emitting device includes a first electrode; a second electrode; N light-emitting units stacked between the first electrode and the second electrode; and a connection layer disposed between any two adjacent light-emitting units. A peak of an intrinsic spectrum of at least part of light-emitting units is in a range from 400 nm to 480 nm. A sum of peaks of intrinsic spectra of the N light-emitting units is in a range from N×400 nm to N×480 nm; N≥2, and N is a positive integer. A difference between a color coordinate y value of the light-emitting device under a blue image at a preset viewing angle that is in a range from 60° to 75° and a color coordinate y value of the light-emitting device under the blue image at a viewing angle of 0° is in a range from 0 to 0.07.
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公开(公告)号：US12058883B2
公开(公告)日：2024-08-06
申请号：US17509760
申请日：2021-10-25
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Zhihui Zhang , Yan Fan , Hao Gao , Xing Fan
IPC: H01L51/52 , H01L51/56 , H10K50/15 , H10K50/852 , H10K71/00 , H10K102/00
CPC classification number: H10K50/852 , H10K50/156 , H10K71/00 , H10K2102/351
Abstract: Provided are a light-emitting device and a manufacturing method thereof, a display panel and a display device. The light-emitting device includes a plurality of light-emitting units including a first, a second, and a third light-emitting unit. Each light-emitting unit includes a micro-cavity structure including an anode, a hole transport layer, a functional layer, and a cathode. The functional layer of the first light-emitting unit includes a first light-emitting layer, a first buffer layer between the first light-emitting layer and the hole transport layer of the first light-emitting unit, and a second buffer layer between the first buffer layer and the first light-emitting layer. The material of the second buffer layer is different from that of the first buffer layer, the second buffer layer has a physical thickness less than or equal to 30 nanometers and an optical thickness less than or equal to 60 nanometers.
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公开(公告)号：US11899303B2
公开(公告)日：2024-02-13
申请号：US17628160
申请日：2021-01-19
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Hao Gao , Yansong Li
IPC: G02F1/1335
CPC classification number: G02F1/133516 , G02F1/133504 , G02F1/133512 , G02F1/133553
Abstract: A color film structure includes a black matrix, a color film layer and a reflective layer. The black matrix has a plurality of openings. The color film layer includes a plurality of filter portions, and at least a portion of each filter portion is located in an opening of the black matrix. The reflective layer is located on a side of the black matrix configured to be proximate to a light-emitting substrate, and an orthographic projection of the reflective layer on a plane where the black matrix is located is covered by the black matrix. The reflective layer is configured to reflect at least a part of light emitted from the light-emitting substrate to the black matrix back to the light-emitting substrate, so that at least a part of the light reflected back to the light-emitting substrate is emitted through the color film layer.
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公开(公告)号：US11882721B2
公开(公告)日：2024-01-23
申请号：US17483253
申请日：2021-09-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: H10K50/844 , H10K50/85
CPC classification number: H10K50/844 , H10K50/85
Abstract: The present disclosure provides a display panel and a display device. The display panel includes: a substrate; and a light-emitting device and a packaging structure on the substrate, the packaging structure sealing the light-emitting device on the substrate. The light-emitting device includes a cathode, an anode, and a light-emitting layer between the cathode and the anode; the packaging structure includes a first inorganic packaging layer, and the first inorganic packaging layer includes a first inorganic packaging sublayer, a second inorganic packaging sublayer, and a third inorganic packaging sublayer that are sequentially stacked; and a refractive index of the second inorganic packaging sublayer is greater than a refractive index of the first inorganic packaging sublayer, and a difference between the refractive index of the second inorganic packaging sublayer and the refractive index of the first inorganic packaging sublayer is greater than 0.1, the refractive index of the second inorganic packaging sublayer is greater than a refractive index of the third inorganic packaging sublayer, and a difference between the refractive index of the second inorganic packaging sublayer and the refractive index of the third inorganic packaging sublayer is greater than 0.1.
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公开(公告)号：US10978664B2
公开(公告)日：2021-04-13
申请号：US16409369
申请日：2019-05-10
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yan Fan , Xing Fan , Hao Gao , Xiangmin Wen
Abstract: A display panel and a method for manufacturing the same and a display device are disclosed. The display substrate includes: a base substrate having a plurality of pixel areas, at least one of the plurality of pixel areas including a first electrode layer, an organic functional layer and a second electrode layer stacked in sequence on the base substrate; and a third electrode layer on a side of the second electrode layer facing away from the base substrate; wherein the third electrode layer is electrically connected to the second electrode layer.
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Patent Agency Ranking
公开(公告)号：US10916606B2
公开(公告)日：2021-02-09
申请号：US16611410
申请日：2019-04-02
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Hao Gao , Yansong Li
Abstract: The present disclosure provides an OLED light emitting device including a plurality of pixel defining structures disposed on a substrate, the plurality of pixel defining structures include a substrate layer and a plurality of particles randomly distributed in the substrate layer, the particles are capable of scattering light incident thereon, and the substrate layer of the pixel defining structures has a non-uniform density.
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公开(公告)号：US12035554B2
公开(公告)日：2024-07-09
申请号：US17483290
申请日：2021-09-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Xiangmin Wen , Xing Fan , Yan Fan , Hao Gao
IPC: H10K50/16 , H10K71/16 , H10K85/30 , H10K85/60 , H05B33/22 , H10K50/155 , H10K101/30
CPC classification number: H10K50/16 , H10K71/164 , H05B33/22 , H10K50/155 , H10K85/324 , H10K85/6572 , H10K2101/30
Abstract: The present disclosure provides an organic electroluminescent device and a manufacturing method thereof. The organic electroluminescent device includes an anode, an electron transport layer and a cathode. The material of the electron transport layer includes a mixture of a first electron transport material and a second electron transport material, the lowest unoccupied molecular orbital energy level of the first electron transport material is higher than that of the second electron transport material, and the ratio of the first electron transport material to the second electron transport material first decreases and then increases in the direction from the cathode to the anode.
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公开(公告)号：US11502143B2
公开(公告)日：2022-11-15
申请号：US16639039
申请日：2019-07-12
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Xing Fan , Hao Gao , Lujiang Huangfu , Yan Fan , Xiangmin Wen
Abstract: A display back panel may include a substrate, an insulating layer disposed on one side of the substrate and including a plurality of recesses, the plurality of recesses including a bottom surface, a first electrode disposed on a surface of the insulating layer away from the substrate, a pixel defining layer disposed on a surface of the first electrode away from the substrate and including a plurality of openings, a light-emitting layer disposed in the plurality of openings and covering the first electrode, and a second electrode disposed on a surface of the light-emitting layer away from the substrate. Therein, the first electrode may reflect waveguide light laterally propagated by the light-emitting layer, thereby improving a light-emitting efficiency of the light-emitting layer. Further, the reflected waveguide light may not be absorbed by the second electrode, thereby enhancing an external quantum effect of the light-emitting layer.
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公开(公告)号：US11196016B2
公开(公告)日：2021-12-07
申请号：US16632191
申请日：2018-11-20
Applicant: BOE Technology Group Co., Ltd.
Inventor： Lujiang Huangfu , Xing Fan , Zheng Liu , Yan Fan , Liangjian Li , Hao Gao
Abstract: A pixel structure includes a base substrate and a light emitting element on the base substrate. The light emitting element includes a reflective electrode, a light emitting layer on the reflective electrode, and a substantially transparent electrode on a side of the light emitting layer away from the reflective electrode. The reflective electrode has a reflective ridge configured to reflect light laterally transmitted through the light emitting layer to exit from a light emitting surface of the pixel structure. The reflective ridge has a first concave reflective sidewall extending from a peak of the reflective ridge to a base of the reflective ridge, and a second concave reflective sidewall extending from the peak of the reflective ridge to the base of the reflective ridge. The first concave reflective sidewall faces away from the second concave reflective sidewall.
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公开(公告)号：US10680196B1
公开(公告)日：2020-06-09
申请号：US16409369
申请日：2019-05-10
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yan Fan , Xing Fan , Hao Gao , Xiangmin Wen
Abstract: A display panel and a method for manufacturing the same and a display device are disclosed. The display substrate includes: a base substrate having a plurality of pixel areas, at least one of the plurality of pixel areas including a first electrode layer, an organic functional layer and a second electrode layer stacked in sequence on the base substrate; and a third electrode layer on a side of the second electrode layer facing away from the base substrate; wherein the third electrode layer is electrically connected to the second electrode layer.
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