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Display device

  • US 9,285,931 B2
  • Filed: 04/14/2009
  • Issued: 03/15/2016
  • Est. Priority Date: 04/15/2008
  • Status: Active Grant
First Claim
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1. A display device having an electrostatic capacity touch panel for detecting touch position coordinates in a display region by an electrostatic capacity coupling method, wherein the electrostatic capacity touch panel comprises:

  • a plurality of X electrodes which extend in a first direction in a first plane, wherein each of the X electrodes is formed by thin line parts and pad parts which are alternately arranged in the first direction;

    a plurality of Y electrodes which extend in a second direction, which intersects the first direction, in a second plane, wherein each of the Y electrodes is formed by thin line parts and pad parts which are alternately arranged in the second direction;

    a plurality of Z electrodes which are in a third plane, and are at an electrically floating state with respect to each other;

    a first insulating layer which is located between the first plane and the second plane; and

    a second insulating layer which is located between the second plane and the third plane;

    wherein the first, second and third planes are planes different from one another;

    wherein each of the plurality of X electrodes and each of the plurality of Y electrodes intersect each other via the first insulating layer;

    wherein the pad part of the each of the plurality of X electrodes and the pad part of the each of the plurality of Y electrodes are disposed without overlapping each other in plan view;

    wherein each of the plurality of Z electrodes overlaps both an X electrode and a Y electrode which are adjacent to each other in plan view; and

    wherein a difference between a combined capacity between the X electrode and the Y electrode during a touch operation of the electrostatic capacity touch panel, and during a no touch operation of the electrostatic capacity touch panel, corresponds to a difference between a serially connected capacity of;

    a capacity between the Z electrode and the X electrode, and a capacity between the Z electrode and the Y electrode.

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