Abstract: A touch display device is provided. The touch display device includes a display panel, a plurality of horizontal sensing lines, a plurality of vertical sensing lines, a horizontal voltage selector, a vertical voltage selector, and a control chip. The display panel includes a plurality of sensing elements arranged in matrix form, and the plurality of the horizontal sensing lines and the plurality of vertical sensing lines are connected with the plurality of the sensing elements, respectively. The horizontal voltage selector is configured to receive a plurality of horizontal sensing signals from the plurality of horizontal sensing lines, and the vertical voltage selector is configured to receive a plurality of vertical sensing signals from the plurality of vertical sensing lines.

Abstract: A touch display device is provided. The touch display device includes a display panel, a plurality of horizontal sensing lines, a plurality of vertical sensing lines, a horizontal encoder, a vertical encoder, and a control chip. The display panel includes a plurality of sensing elements arranged in matrix form, and the plurality of the horizontal sensing lines and the plurality of vertical sensing lines are connected with the plurality of the sensing elements, respectively. The horizontal encoder receives and encodes a plurality of horizontal sensing signals from the plurality of horizontal sensing lines and thereby forms a plurality of horizontal encoded signals whose number is less than that of the horizontal sensing signals. The vertical encoder receives and encodes a plurality of vertical sensing signals from the plurality of vertical sensing lines and thereby forms a plurality of vertical encoded signals whose number is less than that of the vertical sensing signals.