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: 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
  • Publication number: 20200024245
    Abstract: The disclosure relates to the field of organic electroluminescence technologies, in particular to a compound, an organic electroluminescent device and a display device. The compound has a structure as shown in Formula (I), wherein X1-X9 are each independently a C or N atom, and at least one of X1-X9 is an N atom; L is selected from substituted or unsubstituted C5-C40 aryl, and substituted or unsubstituted C3-C40 heteroaryl; Ar is Formula (II), wherein X is selected from an O or S atom; R1-R6 are each independently selected from substituted or unsubstituted C5-C40 aryl, and substituted or unsubstituted C3-C40 heteroaryl; p1-p4 are each independently selected from 0 or 1; p5-p6 are each independently selected from 0, 1, 2, or 3; m is selected from 0, 1, 2, or 3; n is selected from 1, 2, or 3; and * represents a connection site.
    Type: Application
    Filed: September 29, 2019
    Publication date: January 23, 2020
    Applicant: Shanghai Tianma AM-OLED Co., Ltd.
    Inventors: Lei Zhang, Wei Gao, Wenpeng Dai, Jinghua Niu, Ping An, Ying Liu, Gaojun Huang
  • Publication number: 20190322623
    Abstract: Provided is a host material compound having a structure represented by Formula (I): in which m and n, respectively representing the number of electron donors D and the number of electron acceptors A, are each 1, 2 or 3; p and q, respectively representing the number of the group L1 and the number of the group L2, are each 0, 1, or 2. D, L1 and L2 are each alkyl, cycloalkyl, heterocyclic group, aryl, heteroaryl, fused aryl, or fused heteroaryl; and A is selected from nitrogen-containing heterocyclic substituents, cyano-containing substituents, triaryl-boron-derived substituents, and phosphorus oxygen double bond-containing substituents. The compound has a D-(?)-?-(?)-A structure with bipolarity, and the ? bond can interrupt an intramolecular charge transfer between D and A, so that the excited state is limited to a local excited state in moiety of D or A, and the compound has a small excited-state dipole moment.
    Type: Application
    Filed: July 4, 2019
    Publication date: October 24, 2019
    Applicant: WuHan TianMa Micro-Electronics Co., Ltd.
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Dongyang Deng, Hongyan Zhu
  • Publication number: 20190279548
    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: Application
    Filed: May 27, 2019
    Publication date: September 12, 2019
    Applicant: WuHan TianMa Micro-Electronics Co., Ltd.
    Inventors: Wei GAO, Ping AN, Lei ZHANG, Jinghua NIU, Wenpeng DAI, Mingzhi DAI