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Touch pad with flexible substrate

  • US 10,254,860 B2
  • Filed: 05/31/2018
  • Issued: 04/09/2019
  • Est. Priority Date: 06/01/2005
  • Status: Active Grant
First Claim
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1. A touch screen device comprising:

  • a flexible circuit substrate that is dimensionally stable up to a first temperature, wherein the flexible circuit substrate comprises at least one selected from a group consisting of a condensate film, a thermoset material, polyimide, epoxy resin, and a liquid crystal polymer film;

    a first plurality of conductive pads disposed on the flexible circuit substrate;

    a touch controller affixed to the flexible circuit substrate and coupled to the first plurality of conductive pads via a first plurality of conductors;

    a sensor component comprising;

    a first flexible sensor substrate that is dimensionally stable up to a second temperature that is lower than the first temperature, wherein the first flexible sensor substrate is not dimensionally stable at the first temperature, and wherein the first flexible sensor substrate comprises at least one selected from a group consisting of a thermoplastic material, vinyl, polyethylene terephthalate (PET), polystyrene (PS), polyvinylchloride (PVC), and polycarbonate;

    a second plurality of conductive pads disposed on the first flexible sensor substrate, wherein at least one of the first plurality of conductive pads is coupled to at least one of the second plurality of conductive pads;

    a first plurality of capacitive sensing elements disposed on the first flexible sensor substrate and coupled to the second plurality of conductive pads via a second plurality of conductors; and

    a display coupled with the sensor component.

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