Patent ID: 8988378
Filing Date: 2015-03-24
Classification: G06F

Abstract:
1. A touch device, comprising: a touch panel comprising a plurality of scanning lines and a plurality of sensing lines; a driving unit coupled to the touch panel and driving the scanning lines of the touch panel; a sensing unit coupled to the touch panel and performing a touch sensing on the touch panel to generate a touch signal, wherein the driving unit and the sensing unit perform the touch sensing on the touch panel by first performing a self-capacitance touch sensing and then performing a mutual-capacitance touch sensing, wherein when performing the self-capacitance touch sensing, the driving unit simultaneously drives all the scanning lines on the touch panel, and when performing the mutual-capacitance touch sensing, the driving unit sequentially drives all the scanning lines; a storage unit storing a plurality of driving frequency setting data groups, wherein the driving frequency setting data groups correspond to a plurality of different scanning line driving frequencies; and a control unit coupled to the driving unit, the sensing unit, and the storage unit and determining whether the touch device is affected by noise interference according to the touch signal and the driving frequency setting data group that corresponds to the scanning line driving frequency of the driving unit, wherein when the control unit determines that the touch device is affected by noise interference, the driving unit is controlled to switch the frequency that drives the scanning lines to another scanning line driving frequency.