Patents by Inventor Wang Liduo

Wang Liduo 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).

  • Electron injection layer material for organic electroluminescence device
    Patent number: 7501755
    Abstract: The present invention relates to an organic electroluminescence device and provides a new material composition scheme for an electron injection layer. The organic electroluminescence device of the present invention includes an electron injection layer which contains a material represented by formula AxByOz, wherein A is one of an alkali metal and an alkali earth metal, B is one of group VIII metals and 0<x?2, 0<y?3, 0<z?6. A is selected from one of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba. B is selected from one of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt. The electron injection layer can be formed of Al and AxByOz. The electron injection layer has high electron injection ability, and the device has low threshold voltage, high luminance, high efficiency and long life.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: March 10, 2009
    Assignees: Tsinghua University, Beijing Visionox Technology Co., Ltd.
    Inventors: Yong Qiu, Yudi Gao, Deqiang Zhang, Wang Liduo
  • Organic electroluminescence device
    Publication number: 20060152145
    Abstract: The present invention relates to an organic electroluminescence device and provides a new material composition scheme for an electron injection layer. The organic electroluminescence device of the present invention includes an electron injection layer which contains a material represented by formula AxByOz, wherein A is one of an alkali metal and an alkali earth metal, B is one of group VIII metals and 0<x?2, 0<y?3, 0<z?6. A is selected from one of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba. B is selected from one of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt. The electron injection layer can be formed of Al and AxByOz. The electron injection layer has high electron injection ability, and the device has low threshold voltage, high luminance, high efficiency and long life.
    Type: Application
    Filed: July 28, 2005
    Publication date: July 13, 2006
    Inventors: Yong Qiu, Yudi Gao, Deqiang Zhang, Wang Liduo