The present disclosure relates to a position detecting system. The position detecting system includes a display panel including a plurality of pixels. The position detecting system also includes a data driving unit configured to apply a first data voltage and a second data voltage to the display panel, wherein the first data voltage is associated with display of an image on the display panel during a first frame and the second data voltage is associated with display of patterns on the display panel during a second frame. The position detecting system further includes a position detecting sensor configured to capture an image of the patterns when a position detecting mode of the position detecting sensor is turned on.