Touch Screen Fingerprint Recognition Active Area Integration

The patent merges the fingerprint recognition function with the touch sensing area by integrating fingerprint recognition lines and sub-electrodes within the same active area where touch sensing electrodes are located. This allows both touch sensing and fingerprint recognition to occur simultaneously in the same spatial region, eliminating the need for separate fingerprint recognition areas and thereby maintaining the full active touch sensing area.

The active area of the touch screen is designed to serve multiple functions: it acts as both the touch sensing area for general touch input and as the fingerprint recognition area for biometric authentication. By making the active area universal for both purposes, the patent avoids reducing the area dedicated to touch sensing while still achieving fingerprint recognition capability.

The patent applies local quality by increasing wiring density only in the specific regions where fingerprint recognition is needed, rather than uniformly across the entire screen. Fingerprint recognition lines and sub-electrodes are concentrated in the active area where fingerprint patterns are most likely to be captured, allowing efficient fingerprint recognition while minimizing overall wiring complexity in non-critical regions.

The patent utilizes multiple layers and dimensions in the electrode structure, with fingerprint recognition lines and sub-electrodes arranged in specific spatial configurations within the active area. By organizing the wiring in multiple dimensions and layers rather than simple planar arrangements, the patent achieves efficient fingerprint recognition coverage while managing wiring complexity through three-dimensional spatial optimization.