Touch display device and gate driver thereof

A touch display device, comprising:

• a gate driver at least comprising:
• a pull-up control circuit configured to set a voltage level of a first node to a first voltage level;
• a pull-down control circuit configured to set the voltage level of the first node to a second voltage level that is lower than the first voltage level and comprising:
• a first transistor receiving an operation voltage;
• and
• a second transistor connected to the first transistor in series and coupled to the first node, wherein the first transistor and the second transistor are coupled to a second node;
• and
• a pull-up output circuit generating a scan signal according to the voltage level of the first node;
• a data driver generating at least one data signal;
• a timing controller configured to provide a first clock signal to the pull-up output circuit during a first display period and a second display period;
• and
• a display region displaying an image according to the scan signal and the data signal, wherein during the first display period and the second display period, the operation voltage is equal to a first gate voltage, and during a touch-sensing period, the operation voltage is equal to a second gate voltage that is lower than the first gate voltage, and
• wherein the pull-down control circuit further comprises:
• a third transistor setting the voltage level of the first node to be equal to the second voltage level according to a second clock signal, and the second clock signal is generated by the timing controller,
• wherein during the second display period, phases of the first clock signal and the second clock signal are opposite at all times.