Patents by Inventor Wenpeng DAI

Wenpeng DAI 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: 11309527
    Abstract: Provided are a display panel and a display apparatus. The display panel includes an organic light-emitting device, which includes an anode, a cathode, a light-emitting layer between the anode and the cathode, and a capping layer located on a side of a light-exiting side electrode facing away from the light-emitting layer and containing an ultraviolet absorber for absorbing ultraviolet light. After absorbing the ultraviolet light, a molecular volume of the ultraviolet absorber is reduced. By adding the ultraviolet absorber, the organic material in the organic light-emitting device is protected from being damaged, and the service life of the organic light-emitting device is prolonged. Since the molecular volume of the ultraviolet absorber is reduced after absorbing ultraviolet light, the refractive index of the capping layer is increased, improving the light extraction efficiency and the light-emitting efficiency of the organic light-emitting device, and also prolonging the service life.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: April 19, 2022
    Assignee: WuHan TianMa Micro-Electronics Co., Ltd.
    Inventors: Wenpeng Dai, Wei Gao, Lei Zhang, Jinghua Niu, Gaojun Huang
  • Publication number: 20220093871
    Abstract: Provided are a compound, a material for an organic electroluminescent device and an application thereof. The compound has a structure which is formed by substituting at any substitutable position of a structure represented by Formula I with at least one cyano group. The compound has a relatively high refractive index in the region of visible light (400-750 nm) and a reduced extinction coefficient K. When used in the organic electroluminescent device especially as a material for a capping layer, the compound can effectively improve the light extraction efficiency of an organic optoelectronic device, improve external quantum efficiency (EQE), implement display at various angles, and can effectively alleviate a color cast.
    Type: Application
    Filed: December 1, 2021
    Publication date: March 24, 2022
    Inventors: Wenpeng Dai, Wei Gao, Lu Zhai, Lei Zhang, Xia Li
  • Publication number: 20210355142
    Abstract: The present disclosure relates to a compound, a material for an organic electroluminescent device and an application thereof. The compound provided by the present disclosure has a relatively high refractive index and can effectively improve the light extraction efficiency and the external quantum efficiency of an organic electroluminescent device when used in the organic electroluminescent device especially as a material for the capping layer. The compound has a relatively high refractive index in the region of visible light (400-750 nm), which is conducive to improving the light-emitting efficiency. The compound has a relatively large extinction coefficient in the ultraviolet region (less than 400 nm), which is conducive to absorbing harmful light and protecting eyesight and has a relatively small extinction coefficient in the region of blue light (400-450 nm) and hardly absorbs blue light, which is conducive to improve the light-emitting efficiency.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Lu ZHAI, Wei Gao, Wenpeng Dai, Lei Zhang, Quan Ran
  • Publication number: 20210309675
    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 spirt 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: Application
    Filed: July 7, 2020
    Publication date: October 7, 2021
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Wei GAO, Wenpeng DAI, Lei ZHANG, Quan RAN, Jinghua NIU, Xia LI
  • Publication number: 20210296621
    Abstract: Provided are a display panel and a display apparatus. The display panel includes an organic light-emitting device, which includes an anode, a cathode, a light-emitting layer between the anode and the cathode, and a capping layer located on a side of a light-exiting side electrode facing away from the light-emitting layer and containing an ultraviolet absorber for absorbing ultraviolet light. After absorbing the ultraviolet light, a molecular volume of the ultraviolet absorber is reduced. By adding the ultraviolet absorber, the organic material in the organic light-emitting device is protected from being damaged, and the service life of the organic light-emitting device is prolonged. Since the molecular volume of the ultraviolet absorber is reduced after absorbing ultraviolet light, the refractive index of the capping layer is increased, improving the light extraction efficiency and the light-emitting efficiency of the organic light-emitting device, and also prolonging the service life.
    Type: Application
    Filed: June 24, 2020
    Publication date: September 23, 2021
    Inventors: Wenpeng DAI, Wei GAO, Lei ZHANG, Jinghua NIU, Gaojun HUANG
  • Patent number: 11124512
    Abstract: The present disclosure provides an azapyrene compound, a display panel and a display apparatus. The compound has a structure represented by Chemical Formula 1, in which X1-X4 are each a nitrogen atom or C—Ra, one or two of X1-X4 are a nitrogen atom; only one of X1 and X2 is a nitrogen atom; only one of X3 and X4 is N; Ra is mainly hydrogen, deuterium, or C1-C10 alkyl; Ar1 and Ar2 are each C6-C30 aryl or C3-C30 heteroaryl; m and n are 0, 1, 2, or 3, and when one of m and n is 0, the other one of m and n is not 0; and L1 and L2 are a single bond, C6-C30 arylene, or C3-C30 heteroarylene; p and q are 0, 1, or 2. The compound can be used as a CPL material to improve external quantum efficiency (EQE) of an organic light-emitting device and light-emitting efficiency.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 21, 2021
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang
  • Publication number: 20210261531
    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: Application
    Filed: April 13, 2020
    Publication date: August 26, 2021
    Inventors: Wenpeng DAI, Jinghua NIU, Wei GAO, Lei ZHANG, Gaojun HUANG
  • Publication number: 20210202898
    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: Application
    Filed: June 16, 2020
    Publication date: July 1, 2021
    Inventors: Wei Gao, Lei Zhang, Wenjing Xiao, Wenpeng Dai, Jinghua Niu, Ping An
  • Publication number: 20210147442
    Abstract: Provided are an organic compound, an electroluminescent material and an application thereof. The organic compound has a structure represented by Formula I. With the design of the spiro parent structure and the introduction of specific substituents, the organic compound can prevent materials from stacking and reduce the crystallinity of the molecule. The design of the spiro structure and substituents make the organic material have a high triplet state energy level Ti, and the nitrogen heterocycle and its linking groups make the organic compound have characteristics of good electron and hole transport performances. The organic compound has suitable HOMO and LUMO energy levels, facilitating the coordination of adjacent layers in terms of energy level. The organic compound also has advantages of high glass-transition temperature and good molecular thermal stability. Therefore, the organic compound can effectively improve the light emitting efficiency and lifetime of the device.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 20, 2021
    Inventors: Quan Ran, Wei Gao, Lei Zhang, Wenpeng Dai
  • Publication number: 20210130355
    Abstract: The present disclosure provides a compound having a structure represented by Formula 1, where X1-X4 are each independently selected from a carbon atom or a nitrogen atom, and at least two of X1-X4 are each a nitrogen atom; R1-R4 are independently absent or selected from hydrogen, C1-C20 alkyl, C1-C20 alkoxy, C1-C20 alkylthio, C1-C20 alkylamino, C6-C30 aryl, or C2-C30 heteroaryl; m is 1 or 2; n and q are each independently selected from 0, 1, or 2, n+q?1, and m+n+q=3; Ar is C6-C30 aryl. The molecular structure of the compound has a nitrogen-containing multidentate ligand suitable to form complexes with metal Yb or LiQ to form a metal organic complex having multidentate bondings. When applied to an OLED device, it can effectively lower the turn-on voltage and operating voltage, improve the efficiency, and prolong lifetime of the OLED device.
    Type: Application
    Filed: January 12, 2021
    Publication date: May 6, 2021
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Wei GAO, Lu ZHAI, Lei ZHANG, Quan RAN, Wenpeng DAI, Yuyang GUO, Xia LI
  • Publication number: 20210122723
    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: Application
    Filed: December 30, 2019
    Publication date: April 29, 2021
    Inventors: Lei ZHANG, Wei GAO, Jinghua NIU, Wenpeng DAI, Wenjing XIAO, Yan LU, Hongyan ZHU
  • Publication number: 20210126201
    Abstract: The present disclosure provides a compound having a formula (I): where A represents a nitrogen-containing heteroaromatic ring substituent; and L is one or more selected from a single bond, substituted or unsubstituted C1-C12 alkyl, substituted or unsubstituted C3-C8 cycloalkyl, substituted or unsubstituted C1-C8 alkoxy, substituted or unsubstituted C3-C8 heterocyclyl, substituted or unsubstituted C6-C40 aryl, and substituted or unsubstituted C4-C40 heteroaryl.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 29, 2021
    Inventors: Yang LI, Lei ZHANG, Jinghua NIU, Wei GAO, Wenpeng DAI, Ying LIU
  • Publication number: 20210115059
    Abstract: Provided is a compound including a moiety A and one or two moieties B fused with the moiety A at fusing sites, in which X is N, O, S or C; and when X is O or S, Ar2-L1- is absent; Y1-Y4 are each independently C or N; L1 and L2 are each independently a single bond, a substituted or unsubstituted C6-C30 arylene, a substituted or unsubstituted C10-C40 fused arylene, or a substituted or unsubstituted C4-C30 heteroarylene; Ar1 and Ar2 are each independently a substituted or unsubstituted C6-C30 aryl, a substituted or unsubstituted C10-C40 fused aryl, a substituted or unsubstituted C4-C30 heteroaryl, or a substituted or unsubstituted C6-C40 fused heteroaryl, and * represents one of the fusing sites, N or CRa, where Ra is a substituted or unsubstituted C1-C20 alkyl, a substituted or unsubstituted C6-C30 aryl, or a substituted or unsubstituted C3-C30 heteroaryl.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 22, 2021
    Inventors: Wenpeng DAI, Wei GAO, Lei ZHANG, Quan RAN
  • Publication number: 20210098709
    Abstract: The present disclosure relates to a compound, an organic electroluminescent device, and a display device. The compound has a structure of formula (I) X is selected from a C atom, a Si atom, a B atom, or a P atom; Y1 to Y4 are each independently selected from a C atom or an N atom; A and B are each independently selected from any one or more of a substituted or unsubstituted C6-C40 aryl group and a substituted or unsubstituted C4-C40 heteroaryl group; R1 is selected from carbonyl, C1-C9 alkyl, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group; and R2 and R3 are each independently selected from any one of a C1-C9 alkyl group, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group, and n is selected from 0 or 1.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 1, 2021
    Inventors: Wenpeng DAI, Jinghua NIU, Wei GAO, Lei ZHANG, Wenjing XIAO
  • Publication number: 20210098710
    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: Application
    Filed: December 31, 2019
    Publication date: April 1, 2021
    Inventors: Lei ZHANG, Wei GAO, Wenpeng DAI, Jinghua NIU
  • Publication number: 20210098705
    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: Application
    Filed: December 18, 2019
    Publication date: April 1, 2021
    Inventors: Lei ZHANG, Wei GAO, Jinghua NIU, Wenpeng DAI, Wenjing XIAO, Xia LI
  • Publication number: 20210098712
    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: Application
    Filed: December 31, 2019
    Publication date: April 1, 2021
    Inventors: Wei GAO, Wenjing XIAO, Lei ZHANG, Jinghua NIU, Wenpeng DAI
  • Publication number: 20210024511
    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: Application
    Filed: September 29, 2020
    Publication date: January 28, 2021
    Inventors: Wei GAO, Lei ZHANG, Wenpeng DAI, Quan RAN, Lu ZHAI, Wenjing XIAO, Jinghua NIU
  • Publication number: 20210017196
    Abstract: Provided are a compound represented by formula 1, a display panel and display apparatus. In formula 1, L1-L5 are each a linking group independently selected from the group consisting of a single bond, C1-C10 alkylene, C6-C30 arylene, C6-C30 fused arylene, C4-C30 heteroarylene, and C4-C30 fused heteroarylene; R1-R5 are each independently selected from the group consisting of hydrogen, aryl and heteroaryl; and a, b, c, d, and e are each independently 0, 1, 2, or 3. The compound has a spirane structure containing a boron heterocyclic ring and can be used as a light-emitting host material of OLEDs. By introducing the bipolar host material into the OLED, charge transfer balance is beneficially balanced in the light-emitting layer, which broadens exciton recombination region, simplifies device structure, and improves device efficiency.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 21, 2021
    Inventors: Ying LIU, Wenpeng DAI, Dongyang DENG, Dong JIANG, Yang LI, Yan LU, Hongyan ZHU, Jinghua NIU
  • Publication number: 20200407359
    Abstract: The present disclosure relates to the field of organic electroluminescence materials and particularly relates to a compound, an OLED display panel and a display device.
    Type: Application
    Filed: October 3, 2019
    Publication date: December 31, 2020
    Inventors: Wenpeng Dai, Wei Gao, Lei Zhang, Jinghua Niu, Ying Liu, Ping An