Touch Panel Display Synchronous Controller Noise Reduction

The patent implements periodic action by alternating between display driving periods and sensing driving periods. During display driving, high voltage/current is applied to update display content; during sensing driving, the touch sensor is actively scanned. This temporal separation ensures that when one component is actively driven, the other is in a low-activity state, minimizing mutual noise interference while maintaining compact overlapping positioning.

The patent applies dynamics by making the driving frequencies of display and sensing adjustable and adaptive. The controller dynamically modifies the driving frequency of either display or sensing based on real-time conditions, such as touch detection states or noise levels, to optimize the balance between compact positioning and noise reduction.

The patent uses periodic action by implementing distinct display driving periods and sensing driving periods. During display driving periods, high voltage/current is applied to achieve fast display refreshing; during sensing driving periods, the display driving is reduced or paused while touch sensing is actively performed. This temporal multiplexing allows high-power display operation without continuous noise coupling to the sensor.

The patent applies preliminary action by performing sensing operations at specific timing points before or during display refresh cycles when noise coupling is minimized. The controller proactively schedules sensing operations during periods when display voltage transitions are complete or during horizontal/vertical blanking intervals, preventing noise interference before it affects sensing accuracy.

The patent applies dynamics by dynamically adjusting driving parameters based on detected proximity or contact pressure states. When contact pressure is detected indicating close positioning, the controller increases sensing driving frequency or modifies display driving timing to minimize noise coupling. This adaptive response maintains measurement precision despite varying physical distances caused by device flexibility.

The patent implements feedback by continuously monitoring sensing signal quality and noise levels, then using this information to adjust driving frequencies and timing. When noise interference increases due to close positioning from contact pressure, the feedback mechanism triggers adjustments in driving parameters to restore sensing accuracy, enabling the device to maintain performance across different physical states.