Touch display panel including second lead between electrode unit and common lead and method for driving the same

A method for driving a touch display panel comprising a first substrate;

• an electrode array disposed on the first substrate, wherein the electrode array comprises a plurality of electrode units arranged in an array structure, and wherein the plurality of electrode units serve as touch sensing electrodes during a touch sensing period, and serve as common electrodes during a display period;
• a touch display circuit;
• a plurality of first leads, wherein each of the first leads is connected with the corresponding electrode unit through a contact hole, each of the plurality of electrode units is electrically connected with the touch display circuit through one of the plurality of first leads, and the first leads extend from the contact hole in a direction toward the touch display circuit;
• a common lead disposed on the first substrate;
• a plurality of second leads, wherein each of the plurality of electrode units is electrically connected with the common lead through one of the plurality of second leads;
• and a plurality of switches, wherein each of the plurality of switches is disposed between one of the plurality of second leads and the common lead, wherein one end of each of the second leads is connected with the corresponding electrode unit via the contact hole, the other end of each of the second leads is connected with the common lead via the switch, and the second leads extend from the contact hole in a direction away from the touch display circuit, the method comprising
• turning on the plurality of switches, and applying a common signal to the plurality of electrode units through both the plurality of first leads and the plurality of second leads;
• and
• turning off the plurality of switches, and applying a touch signal to the plurality of electrode units through the plurality of first leads.