Patents by Inventor Cheng-Neng Liao

Cheng-Neng Liao 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: 8390210
    Abstract: A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 5, 2013
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Neng Liao, Chia-Hung Sun, Huang-Ti Lin, Chin-Chuang Chueh
  • Publication number: 20110298388
    Abstract: A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
    Type: Application
    Filed: August 17, 2011
    Publication date: December 8, 2011
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Cheng-Neng Liao, Chia-Hung Sun, Huang-Ti Lin, Chin-Chuang Chueh
  • Patent number: 8030852
    Abstract: A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: October 4, 2011
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Neng Liao, Chia-Hung Sun, Huang-Ti Lin, Chin-Chuang Chueh
  • Patent number: 7872424
    Abstract: A lighting apparatus comprises a plurality of light sources, a power conversion circuit, a plurality of load-driving coils and a feedback generation coil. The power conversion circuit generates a driving signal for the load-driving coils to generate substantially identical driving currents for driving every light source. Furthermore, the feedback generation coil generates a feedback signal based on the inductions of the currents flowing though the plurality of load driving coils.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: January 18, 2011
    Assignee: Au Optronics Corporation
    Inventors: Chia-Hung Sun, Tsung-Shiun Lee, Hsing-Ju Chen, Cheng-Neng Liao
  • Publication number: 20090206771
    Abstract: A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
    Type: Application
    Filed: July 1, 2008
    Publication date: August 20, 2009
    Applicant: Au Optronics Corporation
    Inventors: Cheng-Neng Liao, Chia-Hung Sun, Huang-Ti Lin, Chin-Chuang Chueh
  • Publication number: 20080203944
    Abstract: A lighting apparatus comprises a plurality of light sources, a power conversion circuit, a plurality of load-driving coils and a feedback generation coil. The power conversion circuit generates a driving signal for the load-driving coils to generate substantially identical driving currents for driving every light source. Furthermore, the feedback generation coil generates a feedback signal based on the inductions of the currents flowing though the plurality of load driving coils.
    Type: Application
    Filed: June 25, 2007
    Publication date: August 28, 2008
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chia-Hung Sun, Tsung-Shiun Lee, Hsing-Ju Chen, Cheng-Neng Liao