Patents by Inventor Min-Jong Chang

Min-Jong Chang 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).

  • Efficient organic electroluminescent devices with red fluorescent dopants
    Patent number: 6838194
    Abstract: An organic electroluminescent (EL) device (10) in accordance with the present invention comprises, in sequence, a glass substrate (11), an anode layer (12), a hole-injecting layer (13), a hole-transporting layer (14), an luminescent layer (15), an electron-transporting layer (16), an electron-injecting layer (17) and a cathode layer (18). The luminescent layer (15) is doped with a guest fluorescent doping material, and the guest fluorescent doping material for the luminescent layer (15) comprises a compound represented by Formula I: wherein R1, R2, R3, R4, R5, and R6 each independently represents a linear or branched aliphatic group having from 1 to 10 carbon atoms or an aromatic group having from 5 to 20 carbon atoms.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: January 4, 2005
    Assignee: E-Ray Optoelectronics Technology Co., Ltd.
    Inventors: Wen-Yao Huang, Min-Jong Chang, Wen-Chin Huang
  • Red organic electroluminescent materials
    Patent number: 6649089
    Abstract: A red fluorescent material comprising a compound of Formula I: wherein R1, R2, R3, R4, R5, and R6 each independently represents a linear or branched aliphatic group having from 1 to 10 carbon atoms or an aromatic group having from 5 to 20 carbon atoms.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: November 18, 2003
    Assignee: E-Ray Optoelectronics Technology Co., Ltd.
    Inventors: Min-Jong Chang, Wen-Yao Huang, Wen-Chin Huang
  • RED ORGANIC ELECTROLUMINESCENT MATERIALS
    Publication number: 20030193043
    Abstract: A red fluorescent material comprising a compound of Formula I: 1
    Type: Application
    Filed: January 20, 2003
    Publication date: October 16, 2003
    Inventors: Min-Jong Chang, Wen-Yao Huang, Wen-Chin Huang
  • Efficient organic electroluminescent devices with red fluorescent dopants
    Publication number: 20030180574
    Abstract: An organic electroluminescent (EL) device (10) in accordance with the present invention comprises, in sequence, a glass substrate (11), an anode layer (12), a hole-injecting layer (13), a hole-transporting layer (14), an luminescent layer (15), an electron-transporting layer (16), an electron-injecting layer (17) and a cathode layer (18).
    Type: Application
    Filed: January 20, 2003
    Publication date: September 25, 2003
    Inventors: Wen-Yao Huang, Min-Jong Chang, Wen-Chin Huang