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).

  • Publication number: 20200407383
    Abstract: The present disclosure relates to the field of organic electroluminescence, in particular to a compound, an organic electroluminescence device and a display device. The compound has a structure shown in a formula (I): and X is selected from O atom or S atom; X1-X8 are each independently selected from C atoms or N atoms, and at least one of X1-X8 is N atoms; A and B are each independently selected from any one or more of the substituted or unsubstituted C6-C40 aryl, and substituted or unsubstituted C4-C40 heteroaryl; R1 is selected from C1-C9 alkyl, substituted or unsubstituted C6-C18 aryl, substituted or unsubstituted C4-C30 heteroaryl.
    Type: Application
    Filed: October 3, 2019
    Publication date: December 31, 2020
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Wenpeng DAI, Wei Gao, Lei Zhang, Jinghua Niu, Ying Liu, Ping An
  • Publication number: 20200411769
    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: Application
    Filed: October 1, 2019
    Publication date: December 31, 2020
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Wei GAO, Ying LIU, Lei ZHANG, Wenpeng DAI, Jinghua NIU, Gaojun HUANG
  • Publication number: 20200403161
    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: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Inventors: Quan RAN, Wei GAO, Jinghua NIU, Lei ZHANG, Wenpeng DAI
  • Publication number: 20200403159
    Abstract: Provided are a compound having a structure represented by Formula I, and an organic light-emitting element, a display panel and a display device including the same. The organic light-emitting element includes an anode, a cathode and an organic thin film disposed between the anode and the cathode; where the organic thin film includes any one or a combination of at least two of a light-emitting layer, an electron transport layer and a hole blocking layer, and includes at least the light-emitting layer, and at least one of the light-emitting layer, the electron transport layer or the hole blocking layer contains at least one of the compounds. The compound has a relatively deep LUMO energy level, a relatively deep HOMO energy level, a relatively high triplet energy level, a high electron mobility, a high Tg, and good thermal and chemical stability, and is not easy to crystallize.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Inventors: Lei ZHANG, Wei Gao, Jinghua Niu, Wenpeng Dai, Quan Ran, Xia Li
  • Publication number: 20200395554
    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: Application
    Filed: August 31, 2020
    Publication date: December 17, 2020
    Inventors: Wenjing XIAO, Wei Gao, Lei Zhang, Wenpeng Dai, Quan Ran, Jinghua Niu
  • Publication number: 20200388764
    Abstract: The present disclosure relates to the field of OLED technologies, and provides a light-emitting host material including an adamantane structure, and having a structure represented by Formula (I). L1 and L2 are each independently selected from a single bond, phenyl, naphthyl or the like. The electron donor D is selected from carbazolyl and its derivative groups, diphenylamino and its derivative groups, or acridinyl and its derivative groups. The electron acceptor A is mainly selected from a nitrogen-containing heterocyclic substituent, a cyano-containing substituent, a triarylboron-based substituent. The D-(?)-?-(?)-A structure in the compound has a bipolar property, and the intermediate ? bond can effectively interrupt the intramolecular charge transmission between the electron donor D and the electron acceptor A. The compound is used as a host material of the light-emitting layer in an OLED to reduce the efficiency roll-off of the blue light material, and enhance luminance and efficiency.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 10, 2020
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang, Yan Lu, Dongyang Deng
  • Publication number: 20200381631
    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: Application
    Filed: December 31, 2019
    Publication date: December 3, 2020
    Inventors: Wei GAO, Lei ZHANG, Wenpeng DAI, Yang LI, Jinghua NIU
  • Publication number: 20200373493
    Abstract: A compound having a D-(?)-?-(?)-A chemical structure and improving brightness and efficiency of light-emitting is described.
    Type: Application
    Filed: December 31, 2019
    Publication date: November 26, 2020
    Inventors: Wenpeng DAI, Wei GAO, Jinghua NIU, Lei ZHANG, Yang LI, Dongyang DENG, Ping AN
  • Publication number: 20200373501
    Abstract: The present disclosure belongs to the technical field of organic light-emitting diods (OLEDs), and provides a compound used as an electron transmission material of OLEDs. Molecules of the compounds include an aromatic ring (or aromatic fused ring) and a phenanthroline group that are connected to each other. In an embodiment, the compound according to the present disclosure includes two types of groups, i.e., an aromatic ring (or aromatic fused ring) and a phenanthroline (or benzoquinoline) group. These two groups not only have good electron accepting ability, but also can be well doped with metals. The planarity of the two groups is conducive to the stacking of molecules, which facilitates the combination of holes and electrons and generates excitons, thereby increasing the electron mobility of the material and improving efficiency of device.
    Type: Application
    Filed: October 30, 2019
    Publication date: November 26, 2020
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Yan Lu
  • Publication number: 20200347081
    Abstract: A compound according to Formula (1), in which D is an electron donor containing a nitrogen atom and is bonded to a benzene ring through the nitrogen atom; A is an electron acceptor containing a boron atom and is bonded to a benzene ring through the boron atom; m and n are each an integer selected from 1, 2 or 3; and R11, R12, R13, R14 are each independently selected from the group consisting of a hydrogen atom, alkyl, alkoxy, cyano, trifluoromethyl, an electron acceptor A?, and a nitrogen-containing electron donor D. In the compound, biphenyl acts as a linking unit between the electron donor D and the electron acceptor A, such that units D and A are located at different positions of the molecule, realizing effective separation between HOMO and LUMO. In addition, the light absorption and vibration strength of the molecule are enhanced.
    Type: Application
    Filed: October 15, 2019
    Publication date: November 5, 2020
    Applicant: Shanghai Tianma AM-OLED Co.,Ltd.
    Inventors: Wei Gao, Lei Zhang, Wenpeng Dai, Jinghua Niu, Hongyan Zhu
  • Publication number: 20200339608
    Abstract: The present disclosure describes a compound, a light-emitting material, an organic light-emitting display panel and an organic light-emitting display device. The compound has the structure of Formula I. The light-emitting material comprises any one or a combination of at least two of the compounds. The organic light-emitting display panel comprises an anode and a cathode disposed opposite to each other, and an organic layer disposed between the anode and the cathode. The material of the organic layer comprises any one or a combination of at least two of the compounds. The organic light-emitting display device comprises the organic light-emitting display panel. The compound has an energy level difference between a singlet and a triplet states as ?Est?0.30 eV, and, when used in an organic light-emitting display panel, can further increase the luminous efficiency of the device.
    Type: Application
    Filed: November 21, 2019
    Publication date: October 29, 2020
    Inventors: Wei Gao, Lei Zhang, Wenpeng Dai, Jinghua Niu, Dongyang Deng
  • Patent number: 10818215
    Abstract: The present disclosure provides a display panel and a display apparatus. The display panel includes: light-emitting elements which include a first light-emitting element that emits light of a first color having a wavelength ranging from ?1 to ?2, a second light-emitting element that emits light of a second color having a wavelength ranging from ?3 to ?4, and a third light-emitting element that emits light of a third color having a wavelength ranging from ?5 to ?6; and first to third capping layers respectively covering light-exiting sides of the first to third light-emitting elements. At least one of the first to third capping layers contains an ultraviolet light absorber that can absorb light having a wavelength ranging from 380 nm to 410 nm with an absorption rate greater than or equal to 20%.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: October 27, 2020
    Assignee: WuHan TianMa Micro-Electronics Co., Ltd.
    Inventors: Wei Gao, Ping An, Lei Zhang, Jinghua Niu, Wenpeng Dai, Mingzhi Dai
  • Publication number: 20200283448
    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: Application
    Filed: May 27, 2020
    Publication date: September 10, 2020
    Inventors: Wenpeng DAI, Wei GAO, Jinghua NIU, Lei ZHANG, Wenjing Xiao
  • Publication number: 20200270278
    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: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Wei Gao, Wenpeng Dai, Lei Zhang, Wenjing Xiao, Jinghua Niu, Sha Lin
  • Publication number: 20200227648
    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: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Wenjing XIAO, Wei Gao, Wenpeng Dai, Lei Zhang, Jinghua Niu, Yi Liu
  • Publication number: 20200227655
    Abstract: The present disclosure relates provides an compound represented by Chemical Formula 1, in which Ar1, Ar2, Ar3 and Ar4 are C6-C40 aryl, or C5-C40 heteroaryl; R1 and R2 are —C(R)2—, —N(R)—, —O—, or —S—; X1, X2 and X3 are C or N; L1 and L2 are phenylene, naphthylene, or biphenylene; Y1 and Y2 are each an electron-withdrawing group selected from a N-containing heterocyclic group, or a cyano-containing group. The compound of the present disclosure has bipolar characteristics of simultaneously transmitting holes and electrons. The bipolar transmission host is beneficial to charge transmission balance in the light-emitting layer, and can widen the exciton recombination region, to simplify the device structure and improving device efficiency. The present disclosure further provides a display panel and a display apparatus.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: Quan RAN, Lei ZHANG, Wei GAO, Jinghua NIU, Wenpeng DAI
  • Publication number: 20200227654
    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: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Inventors: Lei ZHANG, Wei Gao, Jinghua Niu, Wenpeng Dai, Wenjing Xiao
  • Publication number: 20200207767
    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: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang
  • Publication number: 20200203626
    Abstract: An organic compound, a display panel, and a display apparatus are provided. The organic compound has a structure represented by Chemical Formula 1, in which R1 to R8 are each independently selected from hydrogen, substituted or unsubstituted C6-C18 aryl, pyridyl, quinolyl, C1-C16 alkyl, C1-C16 alkoxy, hydroxyl, and carboxyl; m, n, x and y each independently represent 0 or 1, where m+x?1, n+y?1, m+n?1, and x+y?1; L1 and L2 are each independently selected from substituted or unsubstituted C6-C30 arylene, substituted or unsubstituted C5-C30 heteroarylene, substituted or unsubstituted C1-C8 alkylene, and substituted or unsubstituted C1-C8 alkyleneoxy; Ar1 and Ar2 each independently have a structure shown in Chemical Formula 2, in which R21 to R27 are each independently selected from hydrogen, substituted or unsubstituted C6-C18 aryl, pyridyl, quinolyl, C1-C16 alkyl, C1-C16 alkoxy, hydroxyl, and carboxyl.
    Type: Application
    Filed: July 3, 2019
    Publication date: June 25, 2020
    Inventors: Lei ZHANG, Wei GAO, Jinghua NIU, Wenpeng DAI, Ping AN
  • Publication number: 20200140416
    Abstract: The present disclosure describes an electroluminescent material which is formed of a compound having a structure of Formula (I), an OLED display panel utilizing the compound and an electronic device having the OLED display panel. The OLED display panel includes a first electrode, a second electrode, and an organic thin film layer disposed between the first electrode and the second electrode. The organic thin film layer comprises an electron transport layer which comprises any one or a combination of at least two of the compounds. The electroluminescent material has a triplet energy level ET of ?2.7 eV, a HOMO energy level of ??5.85 eV, and a glass transition temperature of >120° C. This compound improves luminous efficiency in the OLED display panel and the electronic device.
    Type: Application
    Filed: December 31, 2019
    Publication date: May 7, 2020
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Yan Lu, Yang Li, Ying Liu