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Touch input device

  • US 9,547,388 B2
  • Filed: 01/29/2016
  • Issued: 01/17/2017
  • Est. Priority Date: 08/01/2014
  • Status: Active Grant
First Claim
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1. A touch input device capable of detecting a pressure of a touch on a touch surface, the touch input device comprising:

  • a display module comprising a display panel;

    a substrate which is located under the display module; and

    a pressure electrode which is directly formed on the display module,wherein a gap is formed between the display module and the substrate, the gap maintained only by a support structure located only in an edge portion of the substrate, the edge portion having no pressure electrode formed thereon,wherein an electrical signal which is changed according to a capacitance between the pressure electrode and the substrate is detected from the pressure electrode,wherein the capacitance changes depending on a change of a relative distance between the pressure electrode and the substrate,wherein, when the pressure is applied, the display module is bent, and wherein the distance between the pressure electrode and the substrate is changed by the bending of the display module,and wherein the pressure of the touch is detected based on the capacitance.

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