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公开(公告)号：US20240224584A1
公开(公告)日：2024-07-04
申请号：US17914155
申请日：2021-10-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Hao GAO , Yan FAN , Xing FAN , Xu LI , Zhihui ZHANG , Xiangmin WEN
IPC: H10K50/858 , H10K50/15 , H10K50/16 , H10K50/18 , H10K102/00
CPC classification number: H10K50/858 , H10K50/15 , H10K50/16 , H10K50/181 , H10K2102/3026
Abstract: A display device and a display panel thereof, and an OLED display device are provided. The OLED display device includes: a red light-emitting structure, a green light-emitting structure, and a blue light-emitting structure, where (n3z-n3xy)-(n1z-n1xy)≥a first preset value, and (n3z-n3xy)-(n2z-n2xy)≥a second preset value, where ranges of both the first preset value and the second preset value are 0.1˜0.3; n1z is a sum of refractive indexes of respective layers of the red light-emitting structure in a thickness direction; n1xy is a sum of refractive indexes of the respective layers of the red light-emitting structure in a vertical thickness direction; n2z is a sum of refractive indexes of respective layers of the green light-emitting structure in the thickness direction; n2xy is a sum of refractive indexes of the respective layers of the green light-emitting structure in the vertical thickness direction; n3z is a sum of refractive indexes of respective layers of the blue light-emitting structure in the thickness direction; and n3xy is a sum of refractive indexes of the respective layers of the blue light-emitting structure in the vertical thickness direction. According to embodiments of the present disclosure, a reflectance of an interface between the blue light-emitting structure and outside at a large angle of view can be reduced, a light transmittance can be increased, a brightness can be enhanced, and further a color shift can be improved.
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公开(公告)号：US20240057363A1
公开(公告)日：2024-02-15
申请号：US17638195
申请日：2021-04-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Zhihui ZHANG , Yan FAN , Xing FAN , Shu JING , Huameng LIU , Kuo SHEN
IPC: H10K50/11 , H10K71/12 , H10K50/16 , H10K50/858
CPC classification number: H10K50/11 , H10K71/12 , H10K50/16 , H10K50/858 , H10K2101/90
Abstract: An organic light emitting device, a preparation method therefor, and a display apparatus are provided. The organic light emitting device includes an anode, a cathode, and a light emitting layer and an electron transport layer arranged between the anode and the cathode. The electron transport layer is arranged between the light emitting layer and the cathode. The electron transport layer includes a first host material and a second host material. A mixing ratio of the first host material to the second host material of one side of the electron transport layer close to the light emitting layer is different from a mixing ratio of the first host material to the second host material of one side of the electron transport layer away from the light emitting layer.
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公开(公告)号：US20220302416A1
公开(公告)日：2022-09-22
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
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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Patent Agency Ranking
公开(公告)号：US20220293698A1
公开(公告)日：2022-09-15
申请号：US17539095
申请日：2021-11-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Hao GAO , Zhihui ZHANG , Xu LI , Xing FAN , Penghao GU
IPC: H01L27/32 , G02F1/1335 , G02F1/1343 , G02F1/137 , G02F1/01
Abstract: Embodiments of the disclosure provide a display panel and a display device. The display panel includes a substrate, a plurality of light emitting elements and at least one transmissive-reflective module, where the light emitting elements are arranged on the substrate; each of the light emitting elements includes a first electrode, a light emitting functional layer and a second electrode arranged along a direction vertical to the substrate and away from the substrate; the at least one transmissive-reflective module is arranged on a side, close to the substrate, of the first electrode of at least one of the light emitting elements, and/or on a side, away from the substrate, of the second electrode of at least one of the light emitting elements; the transmissive-reflective module is configured to switch between a transmissive state and a reflective state.
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公开(公告)号：US20240389439A1
公开(公告)日：2024-11-21
申请号：US18693533
申请日：2023-06-06
Applicant: BOE Technology Group Co., Ltd.
Inventor： Qixiao WU , Xu LI , Cheng HAN , Hao GAO , Zhihui ZHANG , Weiye ZHENG
Abstract: A display panel comprises: a base substrate; a display function layer, comprising multiple light-emitting elements; a light-exit angle limiting layer, comprising a first light-blocking region and multiple first light-exit regions corresponding to multiple light-emitting elements on a one-to-one basis, an orthographic projection of each first light-exit region on the base substrate overlapping with an orthographic projection of a corresponding light-emitting element on the base substrate; a dimming function layer, comprising multiple dimming structures corresponding to multiple light-emitting elements on a one-to-one basis, an orthographic projection of each dimming structure on the base substrate not overlapping with an orthographic projection of a corresponding light-emitting element on the base substrate, the dimming structure being configured to change a direction of propagation of part of the light that is emitted by the corresponding light-emitting element and directed toward the first light-blocking region into a direction toward the corresponding first light-exit region.
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公开(公告)号：US20240260411A1
公开(公告)日：2024-08-01
申请号：US18020420
申请日：2022-06-21
Applicant: BOE Technology Group Co., Ltd.
Inventor： Zhihui ZHANG , Bei WANG , Hao GAO , Yan FAN , Xiangmin WEN
CPC classification number: H10K59/875 , H10K50/13 , H10K59/35
Abstract: A light emitting substrate includes: a first base substrate, a plurality of light emitting devices located on the first base substrate, wherein the light emitting devices include a first light emitting device, a second light emitting device and a third light emitting device, each of the light emitting devices includes a first electrode layer, a light emitting functional layer and a second electrode layer which are stacked, the light emitting functional layer includes an emitting layer including a first emitting layer in the first light emitting device, a second emitting layer in the second light emitting device and a third emitting layer in the third light emitting device; the material of the first emitting layer is different from the material of the second emitting layer, and the material of the first emitting layer is different from the material of the third emitting layer.
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公开(公告)号：US20220310931A1
公开(公告)日：2022-09-29
申请号：US17519722
申请日：2021-11-05
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Shu JING , Xiaobo DU , Zhihui ZHANG
IPC: H01L51/00
Abstract: An organic light-emitting device, a manufacturing method and a display device are provided. The organic light-emitting device includes: a first electrode and a second electrode that are arranged oppositely; at least two light-emitting layers located between the first electrode and the second electrode, the at least two light-emitting layers include a first light-emitting layer and a second light-emitting layer that are stacked alternately. The first light-emitting layer is a blue light-emitting layer, the first light-emitting layer is doped with a first dopant material, and the second light-emitting layer is doped with a second dopant material. The first dopant material includes a blue light-emitting material with triplet-triplet annihilation effect, and the triplet energy level of the first dopant material is higher than the triplet energy level of the second dopant material.
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公开(公告)号：US20220173320A1
公开(公告)日：2022-06-02
申请号：US17478150
申请日：2021-09-17
Applicant: BOE Technology Group Co., Ltd.
Inventor： Kuo SHEN , Zhihui ZHANG
Abstract: A mask is provided. The mask is applicable to prepare an organic functional layer of a sub-pixel in a display panel. The display panel includes a plurality of pixel units and a pixel defining layer, wherein each pixel unit includes a plurality of sub-pixels, and the pixel defining layer surrounds each sub-pixel. The mask includes a substrate and at least one photo spacer, wherein the substrate includes an opening region and a light shielding region. The opening region exposes a light emitting region of part of the sub-pixels, and the light shielding region covers the remaining sub-pixels and the pixel defining layer. The photo spacer is disposed in the light shielding region.
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