| CPC G06F 3/04166 (2019.05) [G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); G09G 3/32 (2013.01)] | 23 Claims |
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1. A touch sensor, comprising:
a touch sensing area including driving electrodes and sensing electrodes;
a driving signal generator which determines phases of driving signals based on a reference code and supplies the driving signals to the sensing electrodes, wherein the driving signals are sine waves; and
a touch processor which receives sensing signals according to the driving signals from the sensing electrodes and determines a touch position based on the sensing signals and the reference code,
wherein the driving signal generator controls the phases of the driving signals by updating the reference code at a predetermined time point, and
wherein the time point is determined so that a maximum phase delay of the driving signals to the time point is less than π/4.
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