Patent ID: 9195352
Filing Date: 2015-11-24
Classification: G02F,G06F,G09G

Abstract:
1. A touch sensor panel controller for a touch sensor panel having Y electrodes, X electrodes, and a capacitance formed at each of intersections of the X and Y electrodes, the controller comprising: a drive circuit which drives the Y electrodes of the touch sensor panel; a detection circuit which accepts input of signals from the X electrodes, and detects a capacitance value of the capacitance at each intersection; and a control part which controls the drive circuit and the detection circuit, wherein the drive circuit applies a pulse of AC drive voltage to the Y electrodes, a low level of said pulse having a negative voltage and a high level of said pulse having a positive voltage, wherein the control part selects a value for the negative voltage of the low level from among a plurality of predetermined voltage levels based on select data supplied from outside.