Integrated Touch Display Gate Driver Reset for Capacitance Noise

The patent applies preliminary action by performing a reset operation before touch sensing to clear the initial capacitance value caused by display gray levels. The reset phase sets all pixel electrodes to a reference potential (black level), eliminating the capacitance interference before touch data acquisition begins. This preliminary reset action ensures that subsequent touch measurements start from a known baseline, improving measurement precision while maintaining the integrated slim design.

The patent extracts the harmful initial capacitance component by separating the touch sensing process into distinct phases: a reset phase that removes the display-related capacitance, and a sensing phase that measures only touch-induced capacitance changes. By taking out the problematic initial capacitance through the reset operation, the system eliminates ghost noise while preserving the ability to display varying gray levels for content presentation.

The patent implements periodic action by dividing each frame into multiple periodic phases: reset phase, sensing phase, and data transmission phase. Within each frame period, the system periodically performs reset operations and sensing measurements, allowing multiple touch data acquisitions per frame. This periodic structuring enables faster touch response while maintaining relatively simple control logic through systematic phase division.