公开(公告)号：US20220399518A1

公开(公告)日：2022-12-15

申请号：US17776649

申请日：2021-06-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueqin CHEN ,  Congcong JIA ,  Yuqian SUN

IPC: H01L51/50 ,  H01L27/32

Abstract: The present disclosure provides a blue organic light-emitting diode. The blue organic light-emitting diode comprises a hole transport layer, a co-evaporation layer, a blue light-emitting auxiliary layer, a blue light-emitting layer, and an electron transport layer which are sequentially stacked. A material of the co-evaporation layer includes a mixture of a material of the hole transport layer and a material of the blue light-emitting auxiliary layer. The present disclosure also provides a display device. The display device has a good display effect under a low gray scale.

公开(公告)号：US20230200230A1

公开(公告)日：2023-06-22

申请号：US17927463

申请日：2021-11-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yang LIU ,  Yuqian SUN

IPC: H10K85/60 ,  H10K59/35 ,  C09K11/06

CPC classification number: H10K85/6572 ,  H10K59/35 ,  C09K11/06 ,  H10K85/657 ,  H10K85/654 ,  H10K85/622 ,  H10K50/11

Abstract: A light-emitting device includes a first electrode and a second electrode that are arranged sequentially, and a light-emitting layer disposed between the first electrode and the second electrode; a material of the light-emitting layer includes a host material and a guest material; the host material includes a p-type material and an n-type material, the p-type material and the n-type material form an exciplex, and the p-type material and the n-type material satisfy a following condition: |HOMOp-type−HOMOn-type|≤0.2 eV; HOMOp-type represents a highest occupied molecular orbital (HOMO) energy level of the p-type material, and HOMOn-type represents a HOMO energy level of the n-type material.

公开(公告)号：US20240147751A1

公开(公告)日：2024-05-02

申请号：US18023691

申请日：2022-03-03

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yuqian SUN ,  Dongxu ZHANG

IPC: H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K71/12 ,  H10K85/60

CPC classification number: H10K50/15 ,  H10K50/16 ,  H10K50/171 ,  H10K50/181 ,  H10K71/12 ,  H10K85/615 ,  H10K85/631 ,  H10K85/6572 ,  H10K85/6574 ,  H10K2101/30

Abstract: Disclosed in the embodiments of the present disclosure are a blue-light-emitting device and a manufacturing method therefor, and a display apparatus. The blue-light-emitting device comprises a hole transport layer, an electron blocking layer and a light-emitting layer, which are arranged in a stacked manner, wherein the electron blocking layer comprises a first material and a second material, the mobility of the first material is a first mobility, and the mobility of the second material is a second mobility; and the mobility of the hole transport layer is greater than the mobility of the first material, and the mobility of the hole transport layer is greater than the mobility of the second material; and the general structural formula of the material of the hole transport layer is formula (I), the general structural formulae of the first material and the second material are both formula (II), the first material and the second material have different bond energies, and n is equal to 0 or 1.

公开(公告)号：US20250092007A1

公开(公告)日：2025-03-20

申请号：US18291588

申请日：2022-09-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yuqian SUN ,  Lixia QIU ,  Yang LIU

IPC: C07D311/96 ,  C07C211/61 ,  C07D217/18 ,  C07D263/64 ,  C07D405/12 ,  C07D413/14 ,  H10K50/15 ,  H10K50/17 ,  H10K50/18

Abstract: An arylamine compound and use thereof, an electroluminescent device and a display apparatus are provided, the arylamine compound has a general structural formula of Formula I; wherein each group and substituent have the same meaning as that in the description.

公开(公告)号：US20230413591A1

公开(公告)日：2023-12-21

申请号：US18036153

申请日：2020-11-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yang LIU ,  Xueqin CHEN ,  Yuqian SUN ,  Lixia QIU ,  Dongxu ZHANG

IPC: H10K50/12 ,  H10K50/18 ,  H10K71/60 ,  H10K85/60

CPC classification number: H10K50/12 ,  H10K50/181 ,  H10K71/60 ,  H10K85/633 ,  H10K85/622 ,  H10K85/6574 ,  H10K2101/40

Abstract: An organic light-emitting diode includes: an anode, a cathode and a light-emitting layer between the anode and the cathode. The light-emitting layer has a blue light host material; on the side of the light-emitting layer facing the anode, an electron blocking layer is provided in the direction away from the light-emitting layer; the electron blocking layer has a hole material; and the hole material has a structural formula as shown in the following formula (I), and the blue light host material has a structural formula as shown in the following formula (II).

公开(公告)号：US20220320451A1

公开(公告)日：2022-10-06

申请号：US17512547

申请日：2021-10-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei CHEN ,  Xueqin CHEN ,  Yuqian SUN

IPC: H01L51/50

Abstract: The present disclosure provides a light emitting device, a display substrate and a display equipment. The light emitting device includes a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer and an electron injection layer that are stacked in sequence; the light emitting layer includes a plurality of light emitting units, and the wavelengths of lights emitted by at least two of the plurality of light emitting units are different from each other; a hole mobility of the electron blocking layer is greater than or equal to a hole mobility of the hole injection layer or the hole transport layer; and a square resistance of the hole injection layer and a square resistance of the hole transport layer are both greater than or equal to 5×1010 Ω/sq.

公开(公告)号：US20250081846A1

公开(公告)日：2025-03-06

申请号：US18279218

申请日：2022-11-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Rongrong GAO ,  Dan WANG ,  Lei CHEN ,  Lixia QIU ,  Yuqian SUN

IPC: H10K85/60 ,  H10K50/15 ,  H10K50/18 ,  H10K101/40

Abstract: An organic light emitting device includes an anode, a cathode, and a first hole transport layer and a first light emitting layer arranged between the anode and the cathode, wherein the first hole transport layer is located between the first light emitting layer and the anode; the first hole transport layer at least includes a first hole sublayer and a second hole sublayer; a material of the first hole sublayer includes a first material and a second material, and a material of the second hole sublayer includes at least one of the first material and the second material.

公开(公告)号：US20230255107A1

公开(公告)日：2023-08-10

申请号：US18014378

申请日：2021-11-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongxu ZHANG ,  Yuqian SUN ,  Rongrong GAO

IPC: H10K85/60 ,  H10K50/18 ,  H10K50/858

CPC classification number: H10K85/6572 ,  H10K50/181 ,  H10K85/633 ,  H10K85/658 ,  H10K85/636 ,  H10K85/657 ,  H10K50/858 ,  H10K2101/30

Abstract: A light-emitting device, comprising: a first electrode and a second electrode arranged in a stacked manner; and multiple functional layers provided between the first electrode and the second electrode. The multiple functional layers comprise a light-emitting layer, at least two material layers having a hole transport function between the light-emitting layer and the first electrode, and at least one material layer having an electron transport function between the light-emitting layer and the second electrode. The at least two material layers having the hole transport function comprise an electron blocking layer, and the material of the light-emitting layer comprises a guest material. The difference between the LUMO energy level of the material of the electron blocking layer and the LUMO energy level of a host material is greater than or equal to a threshold. Under the same test condition, the ratio of the magnitude of the value of a hole mobility of the material of the electron blocking layer to the magnitude of the value of an electron mobility of the material of the at least one material layer having the electron transport function is greater than or equal to 1.

公开(公告)号：US20220085314A1

公开(公告)日：2022-03-17

申请号：US17344864

申请日：2021-06-10

Applicant: BOE Technology Group Co., Ltd.

Inventor： Rongrong GAO ,  Dongxu ZHANG ,  Yuqian SUN

IPC: H01L51/50 ,  H01L51/00 ,  H01L27/32

Abstract: A light emitting device and a displaying device. The light emitting device includes a luminescent layer, wherein the luminescent layer includes a thermally activated delayed-fluorescence material; the thermally activated delayed-fluorescence material includes a donor group, a receptor group and a linking group; the donor group and the receptor group bond to the linking group; and a torsion angle between a plane where the donor group is located and a plane where the linking group is located is θ1, and a torsion angle between a plane where the receptor group is located and the plane where the linking group is located is θ2; wherein θ1 and θ2 enable an energy-level difference between a singlet-state energy level of the thermally activated delayed-fluorescence material and a triplet-state energy level of the thermally activated delayed-fluorescence material to be less than a constant quantity T, wherein 0 eV