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METHOD FOR MAKING A TWO-LAYER CAPACITIVE TOUCH SENSOR PANEL

  • US 20140041904A1
  • Filed: 02/10/2012
  • Published: 02/13/2014
  • Est. Priority Date: 02/11/2011
  • Status: Abandoned Application
First Claim
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1. A method of fabricating a two-layer capacitive touch sensor panel comprising the following steps:

  • a) depositing a first transparent electrically conductive layer on a transparent cover sheet;

    b) forming a first pattern in the first transparent electrically conductive layer to create a first set of discrete electrode structures therein;

    c) depositing a transparent dielectric layer over the first discrete electrode structure of the first transparent electrically conductive layer;

    d) depositing a second transparent electrically conductive layer onto the transparent dielectric layer;

    e) forming a second pattern in the second transparent electrically conductive layer to create a second set of discrete electrode structures therein by laser ablation, the second pattern not penetrating or penetrating only part way through the dielectric layer so as not to damage the first set of discrete electrode structures;

    f) forming electrical connections or vias between the first and second transparent electrically conductive layers through the dielectric layer; and

    g) forming electrical connections between the first and/or second transparent electrically conductive layer and an electrical track or busbar formed at or adjacent the periphery of the panel.

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