Touch Display Polarizer Dielectric Elastomer Parasitic Capacitance

The patent combines touch sensing and pressure sensing functions into a single integrated sensing electrode structure. The same sensing electrode is used for both touch detection and pressure detection, eliminating the need for separate sensing patterns. This merging approach ensures uniform parasitic capacitance distribution across the entire electrode, thereby eliminating touch distortion at peripheral regions while maintaining accurate touch and pressure sensing capabilities.

The patent implements a universal sensing electrode that performs multiple functions: touch sensing, pressure sensing, and proximity sensing. By designing the sensing electrode with appropriate electrical connection configurations, the same physical structure can detect different types of user interactions. This multi-functional approach maintains sensing versatility while significantly reducing device complexity and eliminating the need for separate touch and pressure sensing electrode structures.

The patent extracts and eliminates the root cause of parasitic capacitance differences by using a single unified sensing electrode structure instead of multiple separate sensing patterns. By removing the need for additional dielectric layers that would be required to compensate for capacitance differences, the solution simplifies the manufacturing process, reduces device thickness, and lowers production costs while achieving uniform parasitic capacitance distribution across the sensing surface.