Patents by Inventor Wu-Tung KAO

Wu-Tung KAO 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: 9367192
    Abstract: A surface capacitive touch panel including a panel body, four electrodes, a power supply module, a grounding and measuring module, and a computation control module. The electrodes are disposed on four sides of the panel body, respectively, and each have a first end portion and a second end portion. In response to a control signal, the power supply module selects one of the electrodes to function as an electrode under test. The power supply module connects with the first end portion of the electrode under test to supply a power to the electrode under test. The grounding and measuring module connects with the second end portion of the electrode under test to create a grounded loop for measuring currents under test. The computation control module computes touch coordinate positions with values of currents under test measured at the electrodes. Hence, single-touch and multi-touch coordinate positions are accurately determined.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 14, 2016
    Assignee: MIDAS TECHNOLOGY INC.
    Inventors: Da-Lee Chang, Wu-Tung Kao, Chien-Hao Huang
  • Publication number: 20160117011
    Abstract: A surface capacitive touch panel including a panel body, four electrodes, a power supply module, a grounding and measuring module, and a computation control module. The electrodes are disposed on four sides of the panel body, respectively, and each have a first end portion and a second end portion. In response to a control signal, the power supply module selects one of the electrodes to function as an electrode under test. The power supply module connects with the first end portion of the electrode under test to supply a power to the electrode under test. The grounding and measuring module connects with the second end portion of the electrode under test to create a grounded loop for measuring currents under test. The computation control module computes touch coordinate positions with values of currents under test measured at the electrodes. Hence, single-touch and multi-touch coordinate positions are accurately determined.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 28, 2016
    Inventors: DA-LEE CHANG, WU-TUNG KAO, CHIEN-HAO HUANG
  • Publication number: 20120050202
    Abstract: The invention relates to a surface capacitive touch panel capable of simultaneously determining different touch points, and a method thereof. The touch panel includes a transparent substrate, a transparent electroconductive layer and an electrode pattern layer. The electrode pattern layer includes at least one first X-side electrode, at least one second X-side electrode, at least one first Y-side electrode and at least one second Y-side electrode, which surround a rectangular area and are formed on a surface periphery of the transparent electroconductive layer. The impedances of the X-side and Y-side electrodes are configured in an ascending manner or a descending manner with a common difference or a common ratio toward the same side, so that impedances of two touch points on the same horizontal or vertical line of the touch panel have a gradient phenomenon to prevent currents from offsetting each other when the two touch points are moved.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventors: Wu-Tung KAO, Chih-Ping Shu, Chi-Feng Chiu
  • Publication number: 20120050204
    Abstract: A touch panel of a display has an impedance adjusting structure for enhancing the detection precision of touch points and includes a transparent substrate, a transparent electroconductive layer and an electrode pattern layer. The electrode pattern layer includes two parallel X-side electrodes and two parallel Y-side electrodes, which surround a rectangular area and are formed on a periphery portion of the electroconductive layer. Each of the X-side and Y-side electrodes is composed of carbon paste sections and silver paste sections arranged in a neighboring manner. Output currents of the X-side and Y-side electrodes are adjusted according to ratios of the carbon paste sections to the silver paste sections, wherein the carbon/silver paste sections are spaced apart by gaps, which are the same, ascend or descend. According to the design, the specific impedance adjustment of the electrode pattern layer can be performed according to the special requirement in the used environment.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventors: Wu-Tung KAO, Chih-Ping Shu, Chi-Feng Chiu
  • Publication number: 20120050175
    Abstract: A touch panel of a display disposed on a display panel includes a transparent substrate, a transparent electroconductive layer and an electrode pattern layer vertically stacked together. The electrode pattern layer includes two opposite parallel X-side electrodes and two opposite parallel Y-side electrodes, all of which surround a rectangular area and are disposed on a periphery of the transparent electroconductive layer. Also, a plastic film is disposed on a side surface of the electrode pattern layer opposite the transparent electroconductive layer. Thus, the touch panel needs not the processing of the surface hard layer, so that the manufacturing processes are simplified, the production yield is increased and the manufacturing cost is reduced when the large-scale touch panel is manufactured. Meanwhile, the interference of electromagnetic waves on the transparent electroconductive layer and the electrode pattern layer can be reduced, and the touch certainty and precision can be enhanced.
    Type: Application
    Filed: August 28, 2010
    Publication date: March 1, 2012
    Inventors: Wu-Tung KAO, Chih-Ping Shu, Chi-Feng Chiu
  • Publication number: 20120050174
    Abstract: A display includes a display panel and a touch panel with a multilayer structure disposed on the display panel. The touch panel includes an ITO film, a transparent electroconductive layer and an electrode pattern layer stacked vertically. The electrode pattern layer includes two parallel X-side electrodes and two parallel Y-side electrodes, all of which surround a rectangular area and are disposed on a peripheral portion of the transparent electroconductive layer. A mother glass layer is stacked above a side surface of the electrode pattern layer opposite to the transparent electroconductive layer. Thus, the touch panel needs not the processing of the surface hard layer, so that the manufacturing processes are simplified, the production yield is increased and the manufacturing cost is reduced. Meanwhile, the interference of electromagnetic waves on the transparent electroconductive layer and the electrode pattern layer can be reduced, and the touch certainty and precision can be enhanced.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventors: Wu-Tung KAO, Chih-Ping Shu, Chi-Feng Chiu
  • Publication number: 20120050205
    Abstract: A display includes a display panel and a touch panel with a multilayer structure. The touch panel includes a transparent substrate, a transparent electroconductive layer and an electrode pattern layer stacked vertically. The electrode pattern layer includes two parallel X-side electrodes and two parallel Y-side electrodes, all of which surround a rectangular area and are disposed on a peripheral portion of the transparent electroconductive layer. A mother glass layer is stacked above a side surface of the electrode pattern layer opposite to the transparent electroconductive layer. Thus, the touch panel needs not the processing of the surface hard layer, so that the manufacturing processes are simplified, the production yield is increased and the manufacturing cost is reduced. Meanwhile, the interference of electromagnetic waves on the transparent electroconductive layer and the electrode pattern layer can be reduced, and the touch certainty and precision can be enhanced.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventors: Wu-Tung KAO, Chih-Ping Shu, Chi-Feng Chiu