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Touch input device

  • US 10,983,648 B2
  • Filed: 10/22/2019
  • Issued: 04/20/2021
  • Est. Priority Date: 08/01/2014
  • Status: Active Grant
First Claim
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1. A touch input device which detects a pressure of a touch on a touch surface, the touch input device comprising:

  • a display module;

    a substrate for blocking electrical noise or for separating the display module from a circuit board or battery for operation of the touch input device; and

    a first electrode disposed on the display module and a second electrode disposed on the substrate,wherein a spacer layer is disposed between the first electrode and the second electrode,wherein a pressure magnitude of the touch is detected based on a capacitance between the first electrode and the second electrode, and the capacitance is changed depending on the distance between the first electrode and the second electrode,wherein the display module is bent by the touch, and the distance between the first electrode and the second electrode is changed due to the bending of the display module,wherein the first electrode is disposed on a bendable surface of the display module, andwherein the spacer layer is maintained with a predetermined thickness only by a supporting structure which is made of inelastic material and located only in an edge portion of the substrate, andwherein the supporting structure is located between the display module and the substrate which is under the display module,wherein the second electrode is positioned between a first insulation layer and a second insulation layer, and the second electrode, together with the first insulation layer and the second insulation layer, is fixed as an integral electrode sheet to the substrate.

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