Patents by Inventor DEFENG BI

DEFENG BI 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).

  • Compound, preparation method thereof and organic light emitting display device
    Patent number: 10759802
    Abstract: The present disclosure relates to the field of technology of an OLED material and a device having the same, and particularly to a compound, a preparation method thereof and an organic light emitting display device, wherein the compound has a structure expressed by formula (I).
    Type: Grant
    Filed: November 5, 2017
    Date of Patent: September 1, 2020
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Zhengchuan Zhang, Hao Dai, Defeng Bi
  • Compound, luminescent material and organic light emitting device using same
    Patent number: 9991448
    Abstract: The present invention discloses a compound represented by the following Formula I, and a luminescent material and an organic light emitting device using the same. Said compound has a characteristic of thermally activated delayed fluorescence, and can be used in luminescent materials and in organic light emitting devices.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: June 5, 2018
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Zhengchuan Zhang, Hao Dai, Defeng Bi
  • COMPOUND, PREPARATION METHOD THEREOF AND ORGANIC LIGHT EMITTING DISPLAY DEVICE
    Publication number: 20180099968
    Abstract: The present disclosure relates to the field of technology of an OLED material and a device having the same, and particularly to a compound, a preparation method thereof and an organic light emitting display device, wherein the compound has a structure expressed by formula (I).
    Type: Application
    Filed: November 5, 2017
    Publication date: April 12, 2018
    Applicant: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Zhengchuan ZHANG, Hao Dai, Defeng Bi
  • Organic light-emitting display apparatus and fabrication method thereof
    Patent number: 9853241
    Abstract: The present disclosure provides an organic light-emitting display apparatus and a fabrication method thereof. The organic light-emitting display apparatus comprises a substrate having a device component layer; first electrodes disposed over the device component layer; a pixel-defining layer having opening regions to expose the first electrodes formed over the device component layer; photo spacers, disposed on the pixel-defining layer, and surrounding at least one opening region to provide a first photo spacer group along the at least one opening region in a first direction and provide a second photo spacer group along the at least one opening region in a second direction; an organic light-emitting layer disposed in the opening regions of the pixel-defining layer and in contact with the first electrodes; and a second electrode disposed on the light-emitting layer.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: December 26, 2017
    Assignees: SHANGHAI TIANMA AM-OLED CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Defeng Bi, Kaen Jiang
  • COMPOUND, LUMINESCENT MATERIAL AND ORGANIC LIGHT EMITTING DEVICE USING SAME
    Publication number: 20170288150
    Abstract: The present invention discloses a compound represented by the following Formula I, and a luminescent material and an organic light emitting device using the same. Said compound has a characteristic of thermally activated delayed fluorescence, and can be used in luminescent materials and in organic light emitting devices.
    Type: Application
    Filed: July 7, 2016
    Publication date: October 5, 2017
    Inventors: Zhengchuan ZHANG, Hao DAI, Defeng BI
  • ORGANIC LIGHT-EMITTING DISPLAY APPARATUS AND FABRICATION METHOD THEREOF
    Publication number: 20170155075
    Abstract: The present disclosure provides an organic light-emitting display apparatus and a fabrication method thereof. The organic light-emitting display apparatus comprises a substrate having a device component layer; first electrodes disposed over the device component layer; a pixel-defining layer having opening regions to expose the first electrodes formed over the device component layer; photo spacers, disposed on the pixel-defining layer, and surrounding at least one opening region to provide a first photo spacer group along the at least one opening region in a first direction and provide a second photo spacer group along the at least one opening region in a second direction; an organic light-emitting layer disposed in the opening regions of the pixel-defining layer and in contact with the first electrodes; and a second electrode disposed on the light-emitting layer.
    Type: Application
    Filed: May 16, 2016
    Publication date: June 1, 2017
    Inventors: DEFENG BI, KAEN JIANG