Touch display device for controlling offset capacitance calibration

A touch display device, comprising:

• a touch screen panel including a gate line extended in a first direction and a data line extended in a second direction;
• and
• a touch screen sensor block configured to control the touch screen panel, and detect a touch position with a capacitance detected using the gate line and the data line as line sensors,
• wherein an offset capacitance of the touch screen panel is compensated in a first plurality of steps using a plurality of offset capacitance control switches,
• wherein the touch screen sensor block comprises:
• a voltage converter configured to, when sensing a change in capacitance through the gate line and the data line, convert the change in capacitance into a voltage in a second plurality of steps;
• an offset controller configured to control an offset capacitance of a signal line with the first plurality of steps while the voltage converter senses the change in capacitance;
• and
• a voltage controller disposed between the voltage converter and the offset controller, and configured to control a voltage range of the offset controller.

A touch display device, comprising:

• a touch screen panel including a gate line extended in a first direction and a data line extended in a second direction;
• and
• a touch screen sensor block configured to control the touch screen panel and detect a touch position with a capacitance detected using the gate line and the data line as line sensors,
• wherein sensing of a signal line is performed in a first plurality of steps, and an offset capacitance of the touch screen panel is compensated in a second plurality steps,
• wherein the first plurality of steps corresponds to a sequentially increased voltage signal and the second plurality of steps corresponds to offset signals that are sequentially enabled in correspondence with the sequential increase of the voltage signal.