Touch Panel LPWG Signal Control to Reduce Wake-Up Noise

The patent applies dynamics by making the voltage levels of signals dynamic rather than static. During the second stage (elevating signal potential stage), the gate driver circuit dynamically adjusts voltage levels: the reset signal and low voltage signal are controlled to a first level signal, while the start pulse signal, clock signal, and latch signal are controlled to a second level signal with lower voltage. This dynamic voltage adjustment reduces disturbances to touch scanning signals while maintaining gesture detection capability.

The patent changes the voltage parameter of control signals to resolve the contradiction. By controlling reset and low voltage signals to a first level signal and start pulse, clock, and latch signals to a second level signal (where first level voltage > second level voltage), the patent optimizes signal integrity during the second stage, reducing touch noise while preserving gesture detection functionality.

The patent applies preliminary action by preparing the gate driver circuit in advance for stage transitions. Before transitioning from the first stage to the second stage, the circuit is configured with appropriate voltage levels for each signal. The reset signal and low voltage signal are set to the first level signal, while other control signals are set to the second level signal, ensuring proper charge discharge conditions are established before the transition occurs, thereby preventing screen flashing.

The patent applies preliminary anti-action by implementing voltage level control that counteracts potential screen flashing issues before they occur. By carefully managing the voltage levels of different signals during stage transitions, the patent prevents charge accumulation that would cause screen flashing, rather than correcting it after it occurs.