Patents by Inventor Feng-Shu Chang

Feng-Shu Chang 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).

  • Optical touch module and optical touch display panel
    Patent number: 8766951
    Abstract: An optical touch module and an optical touch display panel are provided. The optical touch module includes a first photo sensor, a second photo sensor, and a signal processing unit. The first photo sensor is disposed in one of the plurality of pixels of a pixel array. A first terminal and a control terminal of the first photo sensor are coupled to a first scan line. The second photo sensor has a first terminal coupled to a second terminal of the first photo sensor and outputting a sensing voltage, a control terminal coupled to the first terminal of the second photo sensor, and a second terminal receiving a first voltage. The signal processing unit is coupled to the first terminal of the second photo sensor, so as to convert the sensing voltage to a touch signal.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: July 1, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Feng-Shu Chang
  • OPTICAL TOUCH MODULE AND OPTICAL TOUCH DISPLAY PANEL
    Publication number: 20120044207
    Abstract: An optical touch module and an optical touch display panel are provided. The optical touch module includes a first photo sensor, a second photo sensor, and a signal processing unit. The first photo sensor is disposed in one of the plurality of pixels of a pixel array. A first terminal and a control terminal of the first photo sensor are coupled to a first scan line. The second photo sensor has a first terminal coupled to a second terminal of the first photo sensor and outputting a sensing voltage, a control terminal coupled to the first terminal of the second photo sensor, and a second terminal receiving a first voltage. The signal processing unit is coupled to the first terminal of the second photo sensor, so as to convert the sensing voltage to a touch signal.
    Type: Application
    Filed: October 8, 2010
    Publication date: February 23, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Tung-Hsin Lan, Mu-Shan Liao, Tien-Yung Huang, Feng-Shu Chang