公开(公告)号：US20220376199A1

公开(公告)日：2022-11-24

申请号：US17607381

申请日：2020-12-11

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei CHEN ,  Dan WANG ,  Rongrong GAO

IPC: H01L51/50 ,  H01L51/00

Abstract: Provided are an organic light emitting device and a display apparatus. An organic light emitting device, including an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein a hole transport layer and an electron blocking layer are disposed between the anode and the emitting layer; the hole transport layer and the electron blocking layer satisfy: |HOMOHTL−HOMOEBL|≤0.2 eV wherein HOMOHTL is a highest occupied molecular orbital, HOMO energy level of the hole transport layer and HOMOEBL is a HOMO energy level of the electron blocking layer.

公开(公告)号：US20220315540A1

公开(公告)日：2022-10-06

申请号：US17615498

申请日：2020-10-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Bingyan LIANG ,  Rongrong GAO

IPC: C07D251/24 ,  C07D471/04 ,  C07D277/64 ,  C07D241/12 ,  H01L51/00

Abstract: A light-emitting device includes a hole blocking layer including one or more of compounds shown in following formula (1)a and formula (1)b. Z1 to Z11 are selected from H or R. R, R1 and R2 are each selected independently from deuterium, halogen, cyano, nitryl, amino, C1-C40 alkyl, C2-C40 alkenyl, C2-C40 alkynyl, C3-C40 cycloalkyl, C3-C40 heterocycloalkyl, C6-C60 aryl, C5-C60 heteroaryl, C1-C40 alkoxy, C6-C60 aryloxy, C3-C40 alkylsilyl, C6-C60 arylsilyl, C1-C40 alkylboron, C6-C60 arylboron, C6-C60 arylphosphinylene, C6-C60 monoaryl or diaryl phosphino and C6-C60 arylamino. R3 is selected from heterocyclyl and fused heterocyclyl.

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：US20240237510A1

公开(公告)日：2024-07-11

申请号：US17913791

申请日：2021-11-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Rongrong GAO ,  Lei CHEN

IPC: H10K85/60 ,  H10K50/11 ,  H10K50/16 ,  H10K101/40 ,  H10K101/60

CPC classification number: H10K85/615 ,  H10K85/624 ,  H10K85/626 ,  H10K85/654 ,  H10K85/6574 ,  H10K50/11 ,  H10K50/16 ,  H10K2101/40 ,  H10K2101/60

Abstract: The present disclosure provides an organic light-emitting diode structure and a display device. In the organic light-emitting diode structure, the light-emitting layer, the hole blocking layer and the electron blocking layer satisfy the following conditions: T1 (HBL)>T1 (Host); T1 (EBL)>T1 (Host); T1 (Dopant)>T1 (Host); S1 (Host)>S1 (Dopant); wherein T1 (HBL) is the lowest triplet energy of the hole blocking layer material, T1 (Host) is the lowest triplet energy of the host material, T1 (EBL) is the lowest triplet energy of the electron blocking layer material, T1 (Dopant) is the lowest triplet energy of the guest material, S1 (Host) is the lowest singlet energy of the host material, and S1 (Dopant) is the lowest singlet energy of the guest 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：US20230232651A1

公开(公告)日：2023-07-20

申请号：US17626147

申请日：2021-01-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Rongrong GAO ,  Lei CHEN

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

CPC classification number: H10K50/18 ,  H10K85/654 ,  H10K85/6574 ,  H10K85/40 ,  H10K85/6576 ,  H10K85/658 ,  H10K85/6572 ,  H10K50/181 ,  H10K50/15 ,  H10K2101/30

Abstract: An organic light-emitting device includes: an anode, an emitting layer, and a cathode that are stacked; a first functional material layer located between the emitting layer and the anode; and a second functional material layer located between the emitting layer and the cathode. Under a same test condition, a hole mobility of a material of the first functional material layer is at least ten times an electron mobility of a material of the second functional material layer.

公开(公告)号：US20220418059A1

公开(公告)日：2022-12-29

申请号：US17606840

申请日：2020-12-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongxu ZHANG ,  Rongrong GAO ,  Lixia QIU ,  Yang LIU

IPC: H05B33/14 ,  H05B33/10 ,  H01L51/00 ,  H01L51/50

Abstract: The present disclosure provides a blue organic electroluminescence device, a display panel, and a display apparatus. A blue organic electroluminescence device includes a light-emitting layer having a matrix material and a blue fluorescent doping material doped in the matrix material, where dipole moments of the matrix material and the blue fluorescent doping material are both 0 to 1 D, which can ensure higher energy transfer efficiency and charge balance, ensure that an emission spectrum is a narrow spectrum, and thus have better color purity and higher external quantum Efficiency (EQE) to obtain the blue organic electroluminescence devices with high color purity and high luminous efficiency.

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

公开(公告)号：US20220073491A1

公开(公告)日：2022-03-10

申请号：US17359457

申请日：2021-06-25

Applicant: BOE Technology Group Co., Ltd.

Inventor： Rongrong GAO ,  Dongxu ZHANG

IPC: C07D319/24 ,  H01L51/00

Abstract: The present application provides a dioxin derivative, a preparation method thereof, an electron transport layer, an OLED device and a display panel. The dioxin derivative has a formula of where X is O, S or NR; L represents a direct bond, or L is a substituted or unsubstituted C6-C60 arylene, or L is a C2-C60 heteroaryl including a first heteroatom; A has a formula of Ar1 and Ar2 independently are substituted or unsubstituted aryl, phenyl, biphenyl, or hererocyclyl comprising a second heteroatom, B is O, S or Se, X1, X2 and X3 independently are C or N, and at least one of X1, X2 or X3 is N, R4, R5 and R6 independently are C5-C30 aromatic or heteroaromatic group ring.