Patent ID: 9041683
Filing Date: 2015-05-26
Classification: G06F

Abstract:
1. An electrostatic capacity type touch sensor, comprising: a touch sensor pad; a sensor line connected to the touch sensor pad; a charge amplifier having a first input connected to the sensor line and outputting an output voltage corresponding to a change of a capacitance at the touch sensor pad; a signal line disposed adjacent to the sensor line that connects a vibration motor associated with the touch sensor pad that indicates touch detection to a drive transistor that drives the signal line between a first potential and a second potential in correspondence with the output voltage of the charge amplifier, wherein the vibration motor is connected between the first potential and the signal line; a parasitic capacitor formed between the sensor line and the signal line; and a bias resistor connected in parallel with the vibration motor associated with the touch sensor pad that biases the signal line to a first potential so as to avoid floating of the signal line.