Patent ID: 9297831
Filing Date: 2016-03-29
CPC Classification: G01R,G06F

Claim Text:
1. A touch sensor for simultaneously detecting a pressure and a position, comprising: first graphene electrode patterns formed on an insulating substrate and comprising a plurality of graphene line electrodes formed in parallel with one another, and second graphene electrode patterns formed on the first graphene electrode patterns and comprising a plurality of graphene line electrodes vertically crossing the respective plurality of the graphene line electrodes of the first graphene electrode patterns and formed in parallel with one another; a plurality of graphene strain gauges formed to be connected to respective crossing points between the plurality of the graphene line electrodes of the first graphene electrode patterns and the plurality of the graphene line electrodes of the second graphene electrode patterns; and a controller that applies a voltage to each of the graphene line electrodes of the first graphene electrode patterns and the second graphene electrode patterns, and senses a change in resistance generated in the graphene strain gauges corresponding to a position of an outside touch on the insulating substrate according to a pressure applied by the outside touch to determine X and Y coordinates of the position of the outside touch and senses a degree of the pressure applied by the outside touch.