Patents by Inventor Kuo-Chung Lo

Kuo-Chung Lo 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).

  • Patent number: 8157606
    Abstract: A fabricating method of an electron-emitting device is provided. The fabricating method of the electron-emitting device includes at least following procedures. Firstly, a substrate is provided. Next, a first electrode and a second electrode are formed on the substrate. Afterward, a conductive layer covering the first electrode and the second electrode is formed on the substrate. Then, a first conductive layer, a second conductive layer and a gap are formed by patterning the conductive layer. The gap is disposed between the first conductive layer and the second conductive layer. After that, a plasma process is performed at the first conductive layer and second conductive layer.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: April 17, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chih-Hao Tsai, Kuan-Jung Chen, Fu-Ming Pan, Chi-Neng Mo, Kuo-Chung Lo, Mei-Tsao Chiang
  • Patent number: 8120288
    Abstract: A light emitting diode (LED) driving circuit is provided. The LED driving circuit includes a voltage adjusting unit, a switch unit, and a control unit. The control unit is coupled to the voltage adjusting unit and the switch unit. The voltage adjusting unit outputs a driving voltage to a first end of each of a plurality of load units. The switch unit is coupled to a second end of each of the load units. When one LED string in the load units is coupled to a current source, the voltage adjusting unit adjusts the voltage level of the driving voltage so that the voltage level of the driving voltage of the driving voltage corresponds to the driven LED string. Thereby, a driving problem caused by the variation in electrical characteristics of the LEDs is alleviated.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: February 21, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chia-Lin Liu, Ling Li, Chia-Ling Peng, Kuo-Chung Lo, Chi-Neng Mo
  • Publication number: 20110031895
    Abstract: A light emitting diode (LED) driving circuit is provided. The LED driving circuit includes a voltage adjusting unit, a switch unit, and a control unit. The control unit is coupled to the voltage adjusting unit and the switch unit. The voltage adjusting unit outputs a driving voltage to a first end of each of a plurality of load units. The switch unit is coupled to a second end of each of the load units. When one LED string in the load units is coupled to a current source, the voltage adjusting unit adjusts the voltage level of the driving voltage so that the voltage level of the driving voltage of the driving voltage corresponds to the driven LED string. Thereby, a driving problem caused by the variation in electrical characteristics of the LEDs is alleviated.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 10, 2011
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chia-Lin Liu, Ling Li, Chia-Ling Peng, Kuo-Chung Lo, Chi-Neng Mo
  • Publication number: 20100216366
    Abstract: A fabricating method of an electron-emitting device is provided. The fabricating method of the electron-emitting device includes at least following procedures. Firstly, a substrate is provided. Next, a first electrode and a second electrode are formed on the substrate. Afterward, a conductive layer covering the first electrode and the second electrode is formed on the substrate. Then, a first conductive layer, a second conductive layer and a gap are formed by patterning the conductive layer. The gap is disposed between the first conductive layer and the second conductive layer. After that, a plasma process is performed at the first conductive layer and second conductive layer.
    Type: Application
    Filed: July 10, 2009
    Publication date: August 26, 2010
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chih-Hao Tsai, Kuan-Jung Chen, Fu-Ming Pan, Chi-Neng Mo, Kuo-Chung Lo, Mei-Tsao Chiang