Touch display device

A touch display device, comprising:

• a circuit board having a first surface and a second surface opposite to each other, wherein the circuit board is provided with a first control unit, a first driver group, a second control unit, and a second driver group;
• a backlight module, disposed on the first surface of the circuit board;
• a plurality of light-emitting elements, disposed in arrays on the first surface of the circuit board, wherein each of the plurality of light-emitting elements is surrounded by the backlight module;
• a plurality of piezoelectric elements, disposed on the second surface of the circuit board;
• and
• a panel, stacked on the backlight module, wherein the first surface faces the panel, and
• wherein the first control unit is adapted to control the first driver group to drive at least one of the plurality of piezoelectric elements to vibrate, and the second control unit is adapted to control the second driver group to drive at least one of the plurality of light-emitting elements to emit light.