Patents by Inventor Kuo-Chao Liao

Kuo-Chao 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).

  • Touch detection method and associated apparatus
    Patent number: 9280232
    Abstract: A method for touch detection is provided for detecting a touch point on a display device. The method includes: providing a display signal, according to which the display device has two parts of a vertical blanking interval within each frame period, wherein the two parts of the vertical blanking interval are discontinuous; and performing a touch detection in the two parts of the vertical blanking interval, respectively. The touch detection method is capable of performing multiple touch detections within one frame period.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: March 8, 2016
    Assignee: MStar Semiconductor, Inc.
    Inventors: Guo-Kiang Hung, Hsuan-I Pan, Chao-Cheng Wen, Hsien-Keng Lin, Kuo-Chao Liao
  • TOUCH DETECTION METHOD AND ASSOCIATED APPARATUS
    Publication number: 20140218323
    Abstract: A method for touch detection is provided for detecting a touch point on a display device. The method includes: providing a display signal, according to which the display device has two parts of a vertical blanking interval within each frame period, wherein the two parts of the vertical blanking interval are discontinuous; and performing a touch detection in the two parts of the vertical blanking interval, respectively. The touch detection method is capable of performing multiple touch detections within one frame period.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 7, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Guo-Kiang Hung, Hsuan-I Pan, Chao-Cheng Wen, Hsien-Keng Lin, Kuo-Chao Liao
  • Driving circuit and a pixel circuit incorporating the same
    Patent number: 8279243
    Abstract: A driving circuit includes: a switch unit operable according to a scan signal, and adapted for permitting transfer of a data signal when operating in an on state; a capacitor having a first end that is coupled to the switch unit, and a second end; a first transistor having a first terminal that is adapted for coupling to a voltage source, a second terminal that is coupled to the second end of the capacitor and that is adapted to be coupled to a load, and a control terminal that is coupled to the first end of the capacitor; and a second transistor having a first terminal that is adapted for coupling to the voltage source, a second terminal coupled to the second terminal of the first transistor, and a control terminal that is adapted for receiving a bias voltage. Each of the first and second transistors operates in the linear region.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: October 2, 2012
    Assignee: National Cheng Kung University
    Inventors: Chih-Lung Lin, Tsung-Ting Tsai, Kuo-Chao Liao
  • DRIVING CIRCUIT AND A PIXEL CIRCUIT INCORPORATING THE SAME
    Publication number: 20090146698
    Abstract: A driving circuit includes: a switch unit operable according to a scan signal, and adapted for permitting transfer of a data signal when operating in an on state; a capacitor having a first end that is coupled to the switch unit, and a second end; a first transistor having a first terminal that is adapted for coupling to a voltage source, a second terminal that is coupled to the second end of the capacitor and that is adapted to be coupled to a load, and a control terminal that is coupled to the first end of the capacitor; and a second transistor having a first terminal that is adapted for coupling to the voltage source, a second terminal coupled to the second terminal of the first transistor, and a control terminal that is adapted for receiving a bias voltage. Each of the first and second transistors operates in the linear region.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 11, 2009
    Inventors: Chih-Lung LIN, Tsung-Ting TSAI, Kuo-Chao LIAO