公开(公告)号：US12262575B2

公开(公告)日：2025-03-25

申请号：US17312030

申请日：2020-08-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haiyan Sun ,  Xiaojin Zhang ,  Dan Wang ,  Changho Lee

IPC: H10K50/12 ,  H10K85/40 ,  H10K85/60

Abstract: Provided is a display substrate including a base substrate, an anode layer, a light-emitting layer, an electron diffusion layer, a hole block layer and a cathode layer which are sequentially stacked along a direction away from the base substrate, wherein a material of the electron diffusion layer comprises a first luminescent material, and a transport speed of holes generated by the anode layer in the electron diffusion layer is less than a transport speed of the holes in the light-emitting layer.

公开(公告)号：US12239017B2

公开(公告)日：2025-02-25

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 ,  C09K11/06 ,  H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/20 ,  H10K101/40

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.

公开(公告)号：US20240306415A1

公开(公告)日：2024-09-12

申请号：US18271058

申请日：2022-07-01

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan Sun ,  Xiaojin Zhang

IPC: H10K50/15 ,  H10K50/115 ,  H10K50/16 ,  H10K71/12 ,  H10K71/60 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40 ,  H10K102/00

CPC classification number: H10K50/15 ,  H10K50/115 ,  H10K50/16 ,  H10K71/12 ,  H10K71/60 ,  H10K85/6572 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/351

Abstract: A light-emitting-diode device and a fabricating method thereof, a light emitting base plate and a light emitting apparatus. The light-emitting-diode device includes: an anode layer, a luminescent layer, a charge-carrier balancing layer, an electron transporting layer and a cathode layer that are arranged in stack; and a hole mobility of the charge-carrier balancing layer is greater than an electron mobility of the charge-carrier balancing layer, an LUMO energy level of the charge-carrier balancing layer is shallower than an LUMO energy level of the electron transporting layer, and an HOMO energy level of the charge-carrier balancing layer is shallower than an HOMO energy level of the luminescent layer.

公开(公告)号：US11997871B2

公开(公告)日：2024-05-28

申请号：US17733289

申请日：2022-04-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan Sun

IPC: H10K50/856 ,  H10K50/844 ,  H10K50/85 ,  H10K50/858 ,  H10K71/00 ,  H10K59/35

CPC classification number: H10K50/856 ,  H10K50/844 ,  H10K50/85 ,  H10K50/858 ,  H10K71/00 ,  H10K59/351

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.

公开(公告)号：US11345855B2

公开(公告)日：2022-05-31

申请号：US16607217

申请日：2019-04-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Rui Li ,  Haiyan Sun ,  Hao Miao ,  Pengju Zhang ,  Mingxing Liu ,  Hong Zhu ,  Yajie Wang ,  Jingzhe Fang

IPC: C09K19/34 ,  C09K19/30 ,  C09K19/04

Abstract: A liquid crystal composition and a display device are provided. The liquid crystal composition includes a compound having a structure represented by general formula (I) and a compound having a structure represented by general formula (II), and L1, L2, L3 and L4 are independently selected from Z1 is selected from a single bond or —C≡C—; R1, R2 and R3 are independently selected from alkyl, alkenyl, alkynyl, haloalkyl or OR4; and R4 is selected from alkyl, alkenyl, alkynyl or haloalkyl.

公开(公告)号：US10976622B2

公开(公告)日：2021-04-13

申请号：US16638923

申请日：2019-03-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengju Zhang ,  Hao Miao ,  Haiyan Sun ,  Mingxing Liu ,  Hong Zhu

IPC: G02F1/00 ,  G02F1/169 ,  G02F1/1362 ,  G02F1/1335

Abstract: A display panel, a manufacturing method thereof and a display device are provided. The display panel includes an array substrate and a color filter substrate disposed oppositely. A light transmission medium layer is provided between the array substrate and the color filter substrate, the light transmission medium layer being made of graphene oxide.

公开(公告)号：US12256592B2

公开(公告)日：2025-03-18

申请号：US17509788

申请日：2021-10-25

Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Huiyun Yang ,  Xiaojin Zhang ,  Haiyan Sun

IPC: H01L51/50 ,  H01L51/56 ,  H10K50/12 ,  H10K71/00 ,  H10K101/30 ,  H10K102/00

Abstract: Provided is an organic light emitting device, including a p-type host layer, an n-type host layer, and an interlayer disposed between the p-type host layer and the n-type host layer, wherein at least one of the p-type host layer and the n-type host layer includes a fluorescent dopant, and a preset distance is present between the fluorescent dopant and the interlayer; the p-type host layer and the n-type host layer are configured to form, together with the interlayer, a spatially separated exciplex under an action of driving voltage; and the fluorescent dopant is configured to absorb energy of singlet excitons generated by the exciplex to emit light.

公开(公告)号：US12178062B2

公开(公告)日：2024-12-24

申请号：US17260563

申请日：2020-04-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan Sun ,  Meishan Xu ,  Xiaojin Zhang ,  Changho Lee ,  Dan Wang

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K59/122 ,  H10K101/30 ,  H10K101/40

Abstract: An OLED display substrate includes a base substrate with a display region arranged thereon. First, second and third sub-pixels are arranged in the display region. A first electrode layer, a pixel defining layer, a second electrode layer, and organic functional layers are arranged in the display region. The organic functional layers include first, second and third light-emitting layers. The first light-emitting layer covers the display region and is an integral structure. The second and third light-emitting layers are arranged on a side of the first light-emitting layer towards the second electrode layer. An orthographic projection of each sub light-emitting layer of the second and third light-emitting layers on the base substrate completely covers an orthographic projection of an opening of the pixel defining layer on the base substrate, and does not overlap with orthographic projections of other openings of the pixel defining layer on the base substrate.

公开(公告)号：US11930651B2

公开(公告)日：2024-03-12

申请号：US17344809

申请日：2021-06-10

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xinghua Liu ,  Xiaojin Zhang ,  Haiyan Sun

IPC: H10K50/11 ,  H10K50/18 ,  H10K101/40 ,  H10K101/10 ,  H10K101/30

CPC classification number: H10K50/11 ,  H10K50/18 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2101/40

Abstract: Organic luminescent material, includes: host material, TADF sensitizer, and fluorescent-luminescent material; wherein absolute value of difference between LUMO level of the host material and LUMO level of the TADF sensitizer is not more than 0.4 eV, and absolute-value of difference between HOMO level of the host material and HOMO level of the TADF sensitizer is not more than 0.4 eV; absolute-value of LUMO level of the fluorescent-luminescent material is not more than absolute-value of the LUMO level of the host material and the LUMO level of the TADF sensitizer, and/or absolute-value of HOMO level of the fluorescent-luminescent material is not less than an absolute-value of the HOMO level of the host material and absolute-value of the HOMO level of the TADF sensitizer; and emission-spectrum of the host material overlaps an absorption-spectrum of the TADF sensitizer, and emission-spectrum of the TADF sensitizer overlaps absorption-spectrum of the fluorescent-luminescent material.

公开(公告)号：US11162029B2

公开(公告)日：2021-11-02

申请号：US16387004

申请日：2019-04-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Rui Li ,  Pengju Zhang ,  Mingxing Liu ,  Haiyan Sun ,  Xiaochuan Chen

IPC: G02F1/1333 ,  C09K19/44 ,  C09K19/12 ,  C09K19/20 ,  C09K19/30

Abstract: Embodiments of the present disclosure provide a liquid crystal composition and its manufacturing method, a display panel and a display device. The liquid crystal composition includes: at least three organic compounds having a general formula of in which R1 is selected from C1 to C12 alkyl or C2 to C12 alkenyl; R2 is selected from C1 to C12 alkyl, C2 to C12 alkenyl or CF3; are independently selected from j, k and m are independently selected from 0, 1, 2 and 3; l and n are independently selected from 1, 2 and 3; and Z is selected from a single bond, C1 to C12 alkyl, C2 to C12 alkenyl, C2 to C12 alkynyl, CF2O or COO.