Patent ID: 8647519

Claim:
A manufacturing method of touchpad, comprising steps of: providing a substrate and disposing a shield layer on the substrate, a section of the substrate, where the shield layer is positioned being defined as a non-touch section, a section of the substrate, which is free from the shield layer being defined as a touch section; disposing a touch electrode layer with multiple touch electrodes on the substrate; disposing a metal wiring layer with multiple metal wires on the touch electrode layer; performing a first time of lithography and etching processes to the metal wiring layer so as to form multiple metal wires on the non-touch section; performing a second time of lithography and etching processes to the touch electrode layer so as to form multiple touch electrodes on the non-touch section and the touch section; disposing an insulation layer on the touch electrodes, the insulation layer being formed with multiple electrical connection holes corresponding to the touch electrodes; disposing a lead layer with multiple metal leads on the insulation layer, the metal leads passing through the electrical connection holes to electrically connect with the touch electrodes; and disposing a protection layer on the touch electrode layer and the lead layer and the insulation layer.