Piezoresistive type touch panel; manufacturing method thereof; and display device, touch pad, pressure sensor, touch sensor, game console and keyboard having the panel

A manufacturing method of a piezoresistive type touch panel comprising:

• manufacturing a polymer membrane in which a piezoresistive type film pattern, of which resistance varies with applied pressure, is embedded;
• manufacturing a spacer layer and attaching one side of the spacer layer to a surface of the polymer membrane;
• and
• attaching a bottom substrate to the other side of the spacer layer,
• wherein the step of manufacturing a polymer membrane comprises:
• (a) forming a intermediate layer on a substrate;
• (b) forming a carbon nanotube film layer or a metal nanowire film layer on the intermediate layer;
• (c) patterning the carbon nanotube film layer or the metal nanowire film layer to form a carbon nanotube film pattern or a metal nanowire film pattern on the intermediate layer;
• (d) applying a polymer solution over the intermediate layer on which the carbon nanotube film pattern or the metal nanowire film pattern is formed, and curing the applied polymer solution to form a polymer membrane including the carbon nanotube film pattern or the metal nanowire film pattern;
• and
• (e) separating the polymer membrane including the carbon nanotube film pattern or the metal nanowire film pattern from the intermediate layer.