Touch Electrode Area Variation for Capacitance Consistency

The patent applies local quality by designing touch electrodes with varying areas along the first direction based on local capacitance requirements. Specifically, touch electrodes in regions requiring higher capacitance have larger areas, while those requiring lower capacitance have smaller areas. This non-uniform distribution compensates for positional variations in electrostatic capacitance across the display panel, ensuring consistent touch sensitivity throughout the entire display area.

The patent applies parameter changes by systematically varying the area parameter of touch electrodes along the first direction. The design specifies that touch electrodes have different areas in different regions, with larger areas in capacitance-deficient regions and smaller areas in capacitance-sufficient regions. This parameter variation is achieved through controlled patterning processes, resulting in a complex but optimized electrode configuration that balances manufacturing feasibility with performance requirements.

The patent resolves this contradiction through local quality by optimizing touch electrode areas for each specific region. Touch electrodes are designed with larger areas in regions where capacitance is naturally lower (such as edge regions), and smaller areas in regions where capacitance is naturally higher (such as center regions). This localized optimization ensures uniform capacitance distribution across the display panel while preserving the ability to accurately detect touch position through capacitance changes, as each electrode maintains appropriate size for its specific location.