Patents by Inventor Hongling Yang

Hongling Yang 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: 20160141517
    Abstract: The present invention provides a compound having the following formula (I): R2 is an electron withdrawing group; A represents a structure with 0 to 20 benzene rings connected in sequence, R1 is an electron donating group or to form a cyclic electron donating group with parts of C atoms of the last benzene ring. The present invention also provides an organic layer of OLED devices. The present invention also provides a method for synthesizing the compound represented by formula (I). The OLED material with the novel structure provided by the present invention can be applied to an electron-transporting layer, a light emitting layer, a hole transporting layer. Hence, the display devices consisting of the aforesaid OLED material have the advantages of swift response, low power consumption, and wide viewing angle.
    Type: Application
    Filed: November 12, 2015
    Publication date: May 19, 2016
    Applicant: EverDisplay Optonics (Shanghai) Limited
    Inventor: Hongling YANG
  • Publication number: 20160141503
    Abstract: The present invention provides a compound having the following formula (I): R2 is an electron withdrawing group; A represents a structure with 0 to 20 benzene rings connected in sequence, R1 is an electron donating group or to form a cyclic electron donating group with parts of carbon atoms of the last benzene ring. The present invention also provides an organic layer of OLED devices. The present invention also provides a method for synthesizing the compound represented by formula (I). The OLED material with the novel structure provided by the present invention can be applied to an electron-transporting layer, a light emitting layer, a hole transporting layer. Hence, the display devices consisting of the aforesaid OLED material have the advantages of swift response, low power consumption, and wide viewing angle.
    Type: Application
    Filed: November 12, 2015
    Publication date: May 19, 2016
    Applicant: EverDisplay Optonics (Shanghai) Limited
    Inventor: HONGLING YANG
  • Patent number: 9296738
    Abstract: The present invention provides an organic electroluminescent material, the process for preparing same and an OLED device using same. The organic electroluminescent material has a general formula (I): wherein, each of R1, R2, R3 and R4 is independently selected from the group consisting of H, C1-C20 alkyl, C1-C20 alkoxy, ether groups and aromatic amino groups; each of Z is carbon atom or each of Z is nitrogen atom; R is carbazolyl, wherein, n is an integer ranging from 1 to 3 when each of Z is carbon atom, and n is an integer ranging from 1 to 2 when each of Z is nitrogen atom. The organic electroluminescent material of the invention can be used as emitting layer material in an OLED device and improve the luminescent efficiency and lifetime of the device. The luminescence spectral peakmay be adjusted by changing the group on the molecular structure.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: March 29, 2016
    Assignee: EverDisplay Optronics (Shanghai) Limited
    Inventors: Chihhao Gung, Hongling Yang
  • Publication number: 20150203485
    Abstract: The present invention provides an organic electroluminescent material, the process for preparing same and an OLED device using same. The organic electroluminescent material has a general formula (I): wherein, each of R1, R2, R3 and R4 is independently selected from the group consisting of H, C1-C20 alkyl, C1-C20 alkoxy, ether groups and aromatic amino groups; each of Z is carbon atom or each of Z is nitrogen atom; R is carbazolyl, wherein, n is an integer ranging from 1 to 3 when each of Z is carbon atom, and n is an integer ranging from 1 to 2 when each of Z is nitrogen atom. The organic electroluminescent material of the invention can be used as emitting layer material in an OLED device and improve the luminescent efficiency and lifetime of the device. The luminescence spectral peak may be adjusted by changing the group on the molecular structure.
    Type: Application
    Filed: January 13, 2015
    Publication date: July 23, 2015
    Inventors: Chihhao Gung, Hongling Yang