Input Sensing Electrode Layout for Uniform Capacitance Near Display Hole

The patent applies local quality by introducing dummy electrodes specifically at edge regions where sensing electrodes have non-uniform shapes. These dummy electrodes are positioned adjacent to the sensing electrodes and have sizes specifically designed to compensate for the reduced capacitance at edge positions. This localized compensation maintains uniform capacitance across all sensing electrodes while preserving the adaptability to different display edge shapes.

The patent changes the size parameter of dummy electrodes based on the specific shape and position of sensing electrodes. By adjusting the size of dummy electrodes according to the capacitance deficiency at different edge positions, the system achieves uniform capacitance values across sensing electrodes with varying shapes, thus resolving the contradiction between shape adaptability and capacitance uniformity.

The patent merges the dummy electrodes with the existing sensing electrode structure by forming them on the same substrate and integrating them into the capacitive sensing system. The dummy electrodes are electrically connected to the sensing electrodes through conductive layers, creating a unified structure that compensates for capacitance non-uniformity without requiring separate compensation circuits or additional complex components.

The dummy electrodes serve as intermediary elements between the sensing electrodes and the underlying substrate. They mediate the capacitance distribution by providing additional capacitive coupling at edge positions where sensing electrodes have reduced effective area, thereby achieving uniform capacitance values without modifying the sensing electrode shapes or adding complex control mechanisms.