A touch display device comprising: a first substrate, a second substrate and a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of sensing electrodes disposed on the upper surface of the first substrate, wherein the plurality of sensing electrodes are arranged in a two-dimensional array; and a touch control chip bound onto the upper surface of the first substrate, wherein each of the sensing electrodes is connected to the touch control chip via an independent wire; wherein the touch control chip configured to detect the capacitance of each sensing electrode; characterized that the touch control chip is configured to detect each sensing electrode (19, 57) with a simultaneous driving mode, the touch control chip being configured in the simultaneous driving mode to detect the self-capacitance of each sensing electrode (19, 57) by: driving and detecting a sensing electrode (19, 57) and driving the rest of the sensing electrodes (19, 56, 58) simultaneously; or driving and detecting a sensing electrode (19, 57) and driving sensing electrodes (19, 56, 58) peripheral to the sensing electrode simultaneously; wherein a signal for driving the sensing electrode and signals for driving the rest of the sensing electrodes and for driving the sensing electrodes peripheral to the sensing electrode simultaneously are same voltage or current signals. a first substrate, a second substrate and a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of sensing electrodes disposed on the upper surface of the first substrate, wherein the plurality of sensing electrodes are arranged in a two-dimensional array; and a touch control chip bound onto the upper surface of the first substrate, wherein each of the sensing electrodes is connected to the touch control chip via an independent wire; wherein the touch control chip configured to detect the capacitance of each sensing electrode; characterized that the touch control chip is configured to detect each sensing electrode (19, 57) with a simultaneous driving mode, the touch control chip being configured in the simultaneous driving mode to detect the self-capacitance of each sensing electrode (19, 57) by: driving and detecting a sensing electrode (19, 57) and driving the rest of the sensing electrodes (19, 56, 58) simultaneously; or driving and detecting a sensing electrode (19, 57) and driving sensing electrodes (19, 56, 58) peripheral to the sensing electrode simultaneously; wherein a signal for driving the sensing electrode and signals for driving the rest of the sensing electrodes and for driving the sensing electrodes peripheral to the sensing electrode simultaneously are same voltage or current signals. driving and detecting a sensing electrode (19, 57) and driving the rest of the sensing electrodes (19, 56, 58) simultaneously; or driving and detecting a sensing electrode (19, 57) and driving sensing electrodes (19, 56, 58) peripheral to the sensing electrode simultaneously; wherein a signal for driving the sensing electrode and signals for driving the rest of the sensing electrodes and for driving the sensing electrodes peripheral to the sensing electrode simultaneously are same voltage or current signals.