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Method of detecting a touch position and touch panel for performing the same

  • US 8,378,991 B2
  • Filed: 08/13/2008
  • Issued: 02/19/2013
  • Est. Priority Date: 08/21/2007
  • Status: Expired due to Fees
First Claim
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1. A method of detecting a touch position, the method comprising:

  • sequentially supplying a plurality of scan signals to a plurality of first sensor lines arranged in a first direction; and

    detecting at least one touch position where touch events are generated, by analyzing at least one of the scan signals transferred from the first sensor lines to a plurality of second sensor lines arranged in a second direction substantially crossing the first direction by the touch events,wherein the detecting at least one touch position comprises turning on of at least one touch switch by the touch event, so that the scan signal is transferred from the first sensor lines to the second sensor lines through the touch switch,wherein each of the touch switches comprises;

    a first sensor electrode formed on a first substrate to be electrically connected to one of the first sensor lines;

    a second sensor electrode formed on the first substrate adjacent to the first sensor electrode, the second sensor electrode being electrically connected to one of the second sensor lines; and

    a touch electrode formed on a second substrate opposite to the first substrate and the first and second sensor electrodes, the touch electrode being configured to be contacted with the first and second electrodes by the touch event to electrically connect the first and second sensor electrodes such that the scan signal is transferred from the first sensor lines to the second sensor lines;

    wherein the touch event is an external force applied from an outside of the panel unit, and when the external force is not applied to the panel, the touch electrode is not contacted with the first and second sensor electrodes;

    wherein the touch electrode is electrically isolated from a common electrode, the common electrode formed on the second substrate.

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