Patent ID: 8680877

Claim:
A touch sensing apparatus comprising: an approach sensing electrode unit comprising a plurality of first approach sensing electrode arrays disposed on a substrate and a plurality of second approach sensing arrays disposed adjacent to the plurality of first approach sensing electrode arrays; a voltage supply unit to supply a voltage to at least one of the plurality of first approach sensing electrode arrays and the plurality of second approach sensing electrode arrays; a signal generation unit to generate an approach sensing signal by detecting a variation of capacitance generated between the plurality of first approach sensing electrode arrays and the plurality of second approach sensing electrode arrays, the variation of capacitance occurring in a 3-dimensional (3D) approach sensing region; and an information generation unit to generate contact information corresponding to the approach sensing signal generated by the signal generation unit, wherein the plurality of second approach sensing electrode arrays intersect the plurality of first approach sensing electrode arrays, and a through hole is formed in the plurality of second approach sensing electrode arrays at intersection positions with respect to the plurality of first approach sensing electrode arrays.