Patents by Inventor Jinghua NIU

Jinghua NIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12289989
    Abstract: The present disclosure belongs to technical field of OLEDs, and provides a compound suitable as a hole transport material and an electron blocking material of OLEDs. The compound has a general structure according to [Chemical Formula 1], in which Ar1 and Ar2 are each independently selected from a hydrogen atom, a substituted or unsubstituted C5-C40 aryl, or a substituted or unsubstituted C5-C40 heteroaryl; m and n are each an integer independently selected from 0, 1, or 2; X is selected from O, S, or —NR—; R is selected from hydrogen, or a substituted or unsubstituted C5-C40 aryl; Ar3 has a structure according to [Chemical Formula 2], in which R1-R8 are each independently selected from a hydrogen atom, or a substituted or unsubstituted C5-C40 aryl; Y is selected from O, S, or —NR?—; and R? is selected from a hydrogen atom, or a substituted or unsubstituted C5-C40 aryl.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 29, 2025
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Wenjing Xiao, Xia Li
  • Patent number: 12144248
    Abstract: The present disclosure relates to the technical field of OLED, and provides a compound having TADF property. In an embodiment the compound has a structure according to Formula (1), in which X1-X5 are each independently selected from a carbon atom and a nitrogen atom, and at least one of X1-X5 is a nitrogen atom; R11-R20 are each selected from the group consisting of a hydrogen atom, a fluorine atom, alkyl, alkoxy, cyano, trifluoromethyl, an electron-accepting group, and an electron-donating group; at least one of R11-R15 is an electron-donating group or an electron-accepting group, and at least one of R16-R20 is an electron-donating group or an electron-accepting group; when each of R11-R15 is an electron-accepting group, at least one of R16-R20 is an electron-donating group, and each of R11-R15 is an electron-donating group, at least one of R16-R20 is an electron-accepting group.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: November 12, 2024
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wei Gao, Lei Zhang, Wenpeng Dai, Yang Li, Jinghua Niu
  • Patent number: 12091401
    Abstract: Provided are a nitrogen-heterocyclic compound, a display panel and a display apparatus. In an embodiment, the compound has a structure of Chemical Formula 1, in which X1 and X2 are each C or N, and at least one of X1 and X2 is N; X3 to X7 are N or —CRa, and one, two, three or four of X3 to X7 are N, where Ra is hydrogen, deuterium, a substituted or unsubstituted C1-C20 alkyl, C1-C20 alkoxy, C1-C20 thioalkyl, C6-C30 aryl, or C3-C30 heteroaryl; and Ra is independently present or forms an aliphatic ring, an aromatic ring, or a heteroaromatic ring with adjacent carbon atoms; Ar1 and Ar2 are each C6-C30 aryl or C3-C30 heteroaryl; and L1 and L2 are each a single bond, C6-C30 arylene, or C3-C30 heteroarylene. The compound is suitable as a CPL material to improve external quantum efficiency (EQE) of an organic light-emitting device and light-emitting efficiency.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: September 17, 2024
    Assignee: WuHan TianMa Micro-electronics CO., LTD.
    Inventors: Wenpeng Dai, Jinghua Niu, Wei Gao, Lei Zhang, Gaojun Huang
  • Patent number: 12082499
    Abstract: An organic compound has a structure as shown in Formula (I). The compound has a phosphorus-oxygen five-membered ring combined with a five-membered ring as an electron acceptor unit. The compound has a high luminous efficiency and a lower material cost than phosphorescent metal complexes. The compound can be built into a stack structure of organic optoelectronic device, such as OLED. The resultant organic optoelectronic device includes an anode, a cathode, and at least one organic thin film located between the anode and the cathode, the organic thin film contains the compound as shown in Formula (I).
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: September 3, 2024
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenjing Xiao, Wei Gao, Wenpeng Dai, Lei Zhang, Jinghua Niu, Yi Liu
  • Patent number: 12048245
    Abstract: Provided are a compound, an organic light-emitting element including the same, a display panel and a display device. The compound has a structure represented by Formula I. The organic light-emitting element includes an anode, a cathode and an organic thin film layer disposed between the anode and the cathode; where the organic thin film layer includes a light-emitting layer, and further includes any one or a combination of at least two of a hole transport layer, an electron blocking layer and an auxiliary light-emitting layer, and at least one of the hole transport layer, the electron blocking layer and the auxiliary light-emitting layer contains at least one of the compounds. The compound has a relatively shallow HOMO energy level, a relatively shallow LUMO energy level, a relatively high triplet energy level, an appropriate hole mobility, a relatively high Tg, a large molecular torque and good thermal stability.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: July 23, 2024
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Quan Ran, Wei Gao, Jinghua Niu, Lei Zhang, Wenpeng Dai
  • Patent number: 11917850
    Abstract: The display panel includes a plurality of light-emitting areas and a plurality of non-light-emitting areas, the plurality of light-emitting areas being space apart from each other by the plurality of non-light-emitting area; light-emitting elements each located in one of the plurality of light-emitting areas and including an anode and a cathode that are opposite to each other, and a light-emitting layer located therebetween; a cover layer covering a light-emission side of the light-emitting element. The cover layer includes a substrate and first dopants doped in the substrate, the first dopants are magnetic. When an external magnetic field intensity applied to the cover layer is changed by an amount greater than a preset magnetic field intensity, the first dopants in the substrate are rearranged from a first mode to a second mode.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: February 27, 2024
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Wei Gao, Lei Zhang, Wenjing Xiao, Wenpeng Dai, Jinghua Niu, Ping An
  • Patent number: 11912729
    Abstract: Provided are a boron-silicon heterocyclic compound having a structure represented by formula 1, a display device and a display apparatus. In formula 1, L1 and L2 are each a single bond, C6-C30 arylene, C6-C30 fused arylene, C4-C30 heteroarylene, or C4-C30 fused heteroarylene; D1 and D2 are each a substituted or unsubstituted C6-C60 aryl, a substituted or unsubstituted C4-C60 heteroaryl, a substituted or unsubstituted C10-C60 fused aryl, a substituted or unsubstituted C8-C30 fused heteroaryl, or a substituted or unsubstituted diphenylamino. The compound has a strong inductive effect and can reduce the driving voltage of the device. The silacyclopentadiene having a silicon atom as spiro-atom can effectively improve the solubility of the material, which is beneficial to the cleaning of the vapor deposition mask. In addition, the compound has a higher triplet energy level to effectively transfer energy to the luminous body, and improves the efficiency of the device.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: February 27, 2024
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Ying Liu, Dongyang Deng, Yan Lu, Hongyan Zhu, Xia Li
  • Publication number: 20240008362
    Abstract: A light-emitting layer, a light-emitting device and a light-emitting apparatus are provided. The light-emitting layer includes a thermally activated delayed fluorescence (TADF) material, a phosphorescent material, a multiple resonance fluorescent material and a host material.
    Type: Application
    Filed: August 29, 2022
    Publication date: January 4, 2024
    Inventors: Wanming HUA, Jinghua NIU, Yafei LIN, Jianyun WANG, Shaoli ZHANG
  • Patent number: 11807615
    Abstract: The present disclosure provides a compound having a formula (I): wherein Cy represents substituted or unsubstituted C5-C40 aryl; X represents oxygen atom or sulfur atom; L1 is selected from substituted or unsubstituted C5-C40 aryl, or substituted or unsubstituted C3-C40 heteroaryl; A includes a structure represented by formula (II): wherein each of L2 and L3 is independently selected from substituted or unsubstituted C5-C40 aryl, or substituted or unsubstituted C3-C40 heteroaryl; each of Ar1, Ar2, and Ar3 is independently selected from substituted or unsubstituted C5-C40 aryl, substituted or unsubstituted C3-C40 heteroaryl, or substituted or unsubstituted arylamine containing one or two nitrogen atoms; each of m, q, and r is independently selected from 0 or 1; and * indicates a connection position.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: November 7, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Wenjing Xiao, Yan Lu, Hongyan Zhu
  • Patent number: 11780831
    Abstract: Provided is a compound represented by formula 1, and a display panel and a display apparatus including the compound. In formula 1, L1 and L2 are each independently selected from the group consisting of a single bond, C6-C30 aryl, and C4-C30 heteroaryl; a and b are each independently selected from 0, 1, 2, 3, or 4; D1 and D2 are each independently a nitrogen-containing electron donor unit selected from the group consisting of carbazolyl and derivative groups thereof, acridinyl and derivative groups thereof, diarylamino and derivative groups thereof, and triarylamino and derivative groups thereof; and c and d are each independently selected from 0, 1, 2, 3, or 4, and c+d?1.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: October 10, 2023
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., WUHAN TIANMA MICRO-ELECTRONICS CO., LTD
    Inventors: Wei Gao, Lei Zhang, Wenpeng Dai, Quan Ran, Lu Zhai, Wenjing Xiao, Jinghua Niu
  • Patent number: 11780846
    Abstract: A compound having a structure represented by Formula I, and an organic electroluminescent device and an electronic apparatus including the same. The compound may be used as a hole transport material of an organic electroluminescent device. The compound provided by the present disclosure has a shallow LUMO, an appropriate HOMO energy level and a high triplet energy level ET, and can effectively improve hole transport ability, and block electron transition and exciton transport; meanwhile, the compound has high electron mobility, and excellent thermal stability and thin film stability. The compound provided by the present disclosure is used as the hole transport material of an organic electroluminescent device, so that the material has good solubility and appropriate mobility and the inter-pixel cross-talk is effectively avoided, which is conducive to improving light emitting efficiency and lifetime of the device.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: October 10, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang, Wenjing Xiao
  • Patent number: 11785841
    Abstract: A compound having a D-(?)-?-(?)-A chemical structure and improving brightness and efficiency of light-emitting is described.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 10, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang, Yang Li, Dongyang Deng, Ping An
  • Patent number: 11758809
    Abstract: A compound having a structure shown in Chemical Formula 1 is described. In an embodiment, Ar is C6-C20 aryl or C5-C20 heteroaryl; D1 and D2 are electron-donating groups, A1 and A2 are electron-accepting groups, and m, n, p and q are 1, 2, or 3; D1 and D2 are a substituted or unsubstituted C1-C20 alkyl, a substituted or unsubstituted C3-C20 cycloalkyl, a substituted or unsubstituted C1-C20 alkoxy, a substituted or unsubstituted C3-C20 heterocyclic group, a substituted or unsubstituted C6-C40 aryl, a substituted or unsubstituted C4-C40 heteroaryl, a substituted or unsubstituted C10-C60 fused aryl, a substituted or unsubstituted C10-C60 fused heteroaryl, a substituted or unsubstituted C12-C40 carbazolyl, a substituted or unsubstituted C12-C40 diphenylamino group, or a C13-C40 acridinyl; and A1 and A2 are each a nitrogen-containing heterocyclic group, a cyano-containing group, a carbonyl-containing group, a sulfone-based group, and a phosphoroso-containing group.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: September 12, 2023
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wei Gao, Wenjing Xiao, Lei Zhang, Jinghua Niu, Wenpeng Dai
  • Patent number: 11751474
    Abstract: The present disclosure relates to the field of organic electroluminescence materials and particularly relates to a compound and an organic light emitting display device. The compound has a structure represented by Formula (I): and, m, n, p, q, r, s, u, and v are each independently selected from 0 or 1, at least one of r and s is 1, at least one of u and v is 1, L1, L2, L3, and L4 are each independently selected from substituted or unsubstituted C6-C40 aryl, or substituted or unsubstituted C3-C40 heterocyclyl, and A1, A2, A3, and A4 each are independently selected from an electron acceptor unit.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: September 5, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wei Gao, Ying Liu, Lei Zhang, Wenpeng Dai, Jinghua Niu, Gaojun Huang
  • Patent number: 11751475
    Abstract: The present disclosure provides an organic compound, having a structure represented by Formula 1, in which L1, L2, and L3 are each independently selected from a single bond, or C4-C30 arylene; X1, X2, and X3 are each independently selected from CRa, or N, and at least one of X1, X2, or X3 is N; Ar1, Ar2, and Ar3 are each independently selected from C6-C60 aryl, a structure represented by Formula 2, or a structure represented by Formula 3; at least one of Ar1, Ar2, or Ar3 is the structure represented by Formula 2, and at least one of Ar1, Ar2, or Ar3 is the structure represented by Formula 3; X4, X5, X6, and X7 are each independently selected from CRb, or N, and at least one of X4, X5, X6, or X7 is N; # indicates a bonding position; and Ra and Rb are specifically defined in the specification.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: September 5, 2023
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Wenjing Xiao
  • Patent number: 11691991
    Abstract: The present invention relates to a compound, a display panel and a display device. The compound has a structure represented by Formula I. The compound takes a spiro structure as a non-conjugated connecting unit, and a boron-containing group as an electron-accepting group. A light-emitting compound obtained by taking the group as a building block has a narrower half-peak width and higher color purity. The boron-containing spiro structure is connected with an electron-donating group to obtain a bipolar compound, and as a thermal activation delay fluorescence material, the bipolar compound can be used a light-emitting layer material, particularly a doped material, and can also be used as a fluorescent host material or a phosphorescent host material. The compound provided herein can achieve low drive voltages and high luminescence efficiencies when applied to organic electroluminescent devices.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: July 4, 2023
    Assignee: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Wei Gao, Wenpeng Dai, Lei Zhang, Quan Ran, Jinghua Niu, Xia Li
  • Patent number: 11667618
    Abstract: The present disclosure provides an azulene ring-containing compound, its use, and an organic photoelectric device including the same. The azulene ring-containing compound is a compound comprising a structure of Formula I. The organic photoelectric device includes an anode, a cathode, and one or more organic thin film layers located between the anode and the cathode; and at least one of the organic thin film layers contains the above-mentioned azulene ring-containing compound comprising the structure of Formula I. The azulene ring-containing compound provided by the present disclosure has an energy level difference ?Est?0.3 eV between the lowest singlet state S1 and the lowest triplet state T1, and has a light-emitting mechanism of a thermally activated delayed fluorescent material, and can be used as a thermally activated delayed fluorescent material for organic photoelectric device, so that the light-emitting efficiency of the device is improved.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: June 6, 2023
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Tiezhen Gao, Wei Gao, Jinghua Niu
  • Patent number: 11665959
    Abstract: The present disclosure relates to the field of organic electroluminescence technology, and in particular to a compound, an organic electroluminescent device, and a display equipment. The compound of the present disclosure has the structure shown in Formula (I).
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 30, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lei Zhang, Wei Gao, Wenpeng Dai, Jinghua Niu
  • Patent number: 11649254
    Abstract: The present disclosure provides a compound for a display panel. The compound includes elements selected from O, S or N, electron-donor groups and electron-accepting groups. The OLED device in the display panel includes an anode, a cathode, and at least one organic thin film layer between the anode and the cathode. The organic thin film layer includes a light emitting layer, the light emitting layer includes the compound of the present disclosure, and the compound is used to be any one of a host material, a doping material, and a co-doping material. The compound reduces energy level difference between singlet and triplet states ?EST through design of the compound molecular structure. The compound realizes an efficient reverse intersystem crossing process, has typical TADF characteristics, and can be used as a light-emitting layer material of an OLED device to improve luminous efficiency and working life.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: May 16, 2023
    Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wei Gao, Wenpeng Dai, Lei Zhang, Wenjing Xiao, Jinghua Niu, Sha Lin
  • Patent number: 11647671
    Abstract: Provided are a compound and an organic electro-optical device containing the same. The compound has a structure represented by Formula I. The organic electro-optical device comprises an anode, a cathode, and at least one organic thin film layer located between the cathode and the anode. The molecule of the compound provided by the present disclosure has higher rigidity, a large conjugated system, a deeper LUMO energy level, a higher triplet energy level and good molecular stability, and is not easy to crystallize, and thus the compound can be used as an electron transport material or a hole blocking material of the organic electro-optical device, facilitating the reduction of the turn-on voltage of the device, the improvement of current efficiency and the increase of service life.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 9, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenjing Xiao, Wei Gao, Lei Zhang, Wenpeng Dai, Quan Ran, Jinghua Niu