Print Image Acquisition TRIZ Cases
- Optical Sensing Module Light-Blocking Element Stray Noise
A light-blocking element integrates between the display panel and optical sensing layer to filter stray radiation.
- Capacitive Fingerprint Sensor Defective Pixel Correction
Two-step filtering replaces corrupted charge values in capacitive fingerprint sensors using optimized spatial windows.
- Optical Fingerprint Module Without Light Focusing Lens
Removing the light focusing lens reduces module size and improves mechanical reliability while maintaining imaging quality through direct light reflection.
- Fingerprint Module Light Shading Layer Design
A fingerprint module light shading layer connects to a fixed potential signal line at the same level as the photosensitive diode.
- Biometric Image Sensing Using Orthogonal Impedance Electrodes
Orthogonal drive and pickup lines form intrinsic impedance sensing pairs for high-resolution fingerprint capture.
- Acoustic Fingerprint Sensor with Isolated Drive and Sense Circuits
A piezoelectric acoustic fingerprint sensor uses independent drive and sense circuits to isolate high voltage signals from low voltage detection paths.
- Under-screen Optical Fingerprint Identification with Multi-angle Light Emission
A multi-angle light-emitting layer illuminates fingerprint ridges to capture three-dimensional stereoscopic images for under-screen optical identification.
- Pixel Photodetector Color Filter Wavelength Selection
A pixel photodetector uses a color filter layer to transmit specific wavelength bands for selective light detection.
- Fingerprint Sensing Circuit Temporal Weighting for Ridge Valley Identification
A fingerprint sensing circuit uses temporal weighting summation across multiple periods to obtain grey levels from column row sensing units.
- Touch Panel Mistouch Recognition via Area Fraction Thresholds
A gesture detection method evaluates touch area fractions against defined thresholds to validate input events on capacitive panels.
- Coplanar Sensor Electrode Arrangement for Capacitance Detection
A coplanar sensor positions first and second electrode blocks on the same plane to enhance capacitance change detection.
- Side-Illuminated Fingerprint Sensor Using Total Internal Reflection
A fingerprint identification device uses a transparent cover plate with an inclined side surface to direct light via total internal reflection.
- Biometric Enrollment Fraud Detection via Multi-Modal Verification
Multi-modal biometric verification prevents enrollment fraud by comparing fingerprint ridges against hand context images to detect fake fingers.
- Fingerprint Identification Module Using Touch Panel Electrodes
A fingerprint identification module integrates sensing electrodes into touch panel signal lines to detect biometric data via electric field intensity.
- Mobile Fingerprint Authentication via Multi-Template Score Fusion
Fusing match scores from multiple enrollment templates enables biometric authentication on small mobile sensors.