Patents by Inventor Yu-Zhong Chen

Yu-Zhong Chen 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).

  • Driving method and circuit of organic light emitting diode
    Patent number: 6686898
    Abstract: Driving method and circuit of an organic light emitting diode, applied to an array of a plurality of organic light emitting diode. The array has several rows and columns of organic light emitting diodes. The row and column corresponding to the organic light emitting selected to illuminate are selected. A first voltage is applied to the selected column, and a second voltage is applied to the selected row. The difference between the first and second voltages is larger than the conducting voltage of the organic light emitting diode, so that the light emitting diode can illuminate. A third voltage and a fourth voltages are applied to other rows and columns which are not connected to the selected organic light emitting diode to provide a reverse bias to all the remaining light emitting diodes.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: February 3, 2004
    Assignee: Delta Optoelectronics, Inc.
    Inventors: Yu-Zhong Chen, Chih-Jung Yu, Chen-Ting Tsai, Chieu-Yao Chin
  • Driving method and circuit of organic light emitting diode
    Publication number: 20030038761
    Abstract: Driving method and circuit of an organic light emitting diode, applied to an array of a plurality of organic light emitting diode. The array has several rows and columns of organic light emitting diodes. The row and column corresponding to the organic light emitting selected to illuminate are selected. A first voltage is applied to the selected column, and a second voltage is applied to the selected row. The difference between the first and second voltages is larger than the conducting voltage of the organic light emitting diode, so that the light emitting diode can illuminate. A third voltage and a fourth voltages are applied to other rows and columns which are not connected to the selected organic light emitting diode to provide a reverse bias to all the remaining light emitting diodes.
    Type: Application
    Filed: November 27, 2001
    Publication date: February 27, 2003
    Inventors: Yu-Zhong Chen, Chih-Jung Yu, Chen-Ting Tsai, Chieu-Yao Chin