Patent ID: 8860685

Claim:
A touch sensor comprising: a touch drive electrode; a touch detection electrode provided in opposition to or side by side with the touch drive electrode and forming an electrostatic capacitance between the touch detection electrode and the touch drive electrode; and a touch detection circuit that performs a detection of a contact or proximity position of an object, on the basis of a detection signal obtained from the touch detection electrode by applying a touch sensor drive signal to the touch drive electrode, wherein the touch drive electrode is split into a plurality of electrode patterns in a stripe shape, and application of the touch sensor drive signal to part of the plurality of electrode patterns causes a drive line to be formed at that time, the touch detection circuit performs the detection on the basis of a first detection signal obtained from a first drive line formed in a first period, and a second detection signal obtained from a second drive line formed in a second period different from the first period and having a smaller line width than the first drive line, and the touch detection circuit performs the detection on the basis of a differential signal between the first detection signal and the second detection signal.