Print Image Acquisition TRIZ Cases

A light-blocking element integrates between the display panel and optical sensing layer to filter stray radiation.

Two-step filtering replaces corrupted charge values in capacitive fingerprint sensors using optimized spatial windows.

Removing the light focusing lens reduces module size and improves mechanical reliability while maintaining imaging quality through direct light reflection.

A fingerprint module light shading layer connects to a fixed potential signal line at the same level as the photosensitive diode.

Orthogonal drive and pickup lines form intrinsic impedance sensing pairs for high-resolution fingerprint capture.

A piezoelectric acoustic fingerprint sensor uses independent drive and sense circuits to isolate high voltage signals from low voltage detection paths.

A multi-angle light-emitting layer illuminates fingerprint ridges to capture three-dimensional stereoscopic images for under-screen optical identification.

A pixel photodetector uses a color filter layer to transmit specific wavelength bands for selective light detection.

A fingerprint sensing circuit uses temporal weighting summation across multiple periods to obtain grey levels from column row sensing units.

A gesture detection method evaluates touch area fractions against defined thresholds to validate input events on capacitive panels.

A coplanar sensor positions first and second electrode blocks on the same plane to enhance capacitance change detection.

A fingerprint identification device uses a transparent cover plate with an inclined side surface to direct light via total internal reflection.

Multi-modal biometric verification prevents enrollment fraud by comparing fingerprint ridges against hand context images to detect fake fingers.

A fingerprint identification module integrates sensing electrodes into touch panel signal lines to detect biometric data via electric field intensity.

Fusing match scores from multiple enrollment templates enables biometric authentication on small mobile sensors.

Segmenting the sensor into distinct substrates resolves the trade-off between high measurement precision and low production cost.

Oblique light routing enables polarization comparison that distinguishes real three-dimensional fingers from planar fake prints.

A touch display panel uses a shared common electrode layer for both pixel driving and fingerprint sensing via capacitive coupling.

An optical film with alternating light-transmitting and light-blocking regions directs reflected fingerprint light to an imaging sensor.

Multi-phase scanning with pseudo-random sequences reconstructs fingerprint images despite weak signal strength and high circuitry sensitivity requirements.

Folded flexible substrates connect sensing parts to chips, reducing noise from distance differences and improving touch sensitivity.

Stacks the fingerprint sensor layer within the touch layer structure to reduce manufacturing costs while maintaining recognition reliability.

Display blocks emit specific wavelengths to enable sensing blocks to detect reflected light intensity for fingerprint authentication.

Capacitive coupling between charge amplifiers suppresses common mode components to extract fingerprint data through thick protective coatings.

A multi-sided fingerprint sensor array uses alternating voltage cycles to measure resistance and charged skin voltage differences across pixel electrodes.

A touch panel design merges fingerprint and touch layers using a shared second electrode to consolidate wiring paths.

A fingerprint sensing circuit uses programmable data structures to drive sensing elements via sequential I/O interconnects.

Positioning members wrap a flexible sensor around the finger to capture rolled-equivalent fingerprint images without manual rotation or rocking.

Spaced linear arrays capture partial fingerprint images that a processor combines into a complete image, reducing device complexity and manufacturing cost.

Dual-phase scanning reduces detection time by focusing detailed analysis only on regions identified during initial coarse scans.

A finger biometric sensor adjusts drive signal levels based on initial data to enhance measurement resolution.

A touch-fingerprint complex sensor uses distinct electrode layers to maintain low resistance for fast touch response and high capacitance for fingerprint detection.

Merges display and sensing functions using backlight reflection to resolve the trade-off between uniform illumination and biometric acquisition capability.

A detachable fingerprint sensor module integrates metal terminals for reliable electrical connection and precise positioning within the device case.

An edge reflector injects light into the cover glass for total internal reflection, ensuring sufficient illumination for optical fingerprint sensing.

Electromagnetic field stimulation induces dermal fluorescence to detect sweat gland pores, preventing spoofing via artificial samples.

Analog sampling circuitry captures voltage samples at specific drive signal levels to suppress common mode interference before digital conversion.

An interface circuit stabilizes amplifier operation by compensating for substrate capacitance, enabling reliable fingerprint recognition in mobile devices.

A fingerprint sensor cover structure integrates conductive traces and wire bonds to connect the sensing array directly to external circuitry.

Processing system captures and compares sensing region images to reject residual fingerprint spoofing attempts.

A single chip merges touch and fingerprint modules to generate refined output data for improved sensing accuracy.

Placing the illumination element behind the image forming layer reduces device size while maintaining effective close-up photography brightness.

Alternating bright and dark zones from an anti-fake illuminator distinguish real cutaneous imprints from false ones by analyzing light intensity variations.

A self-capacitive touch panel design merges row electrodes onto a single sensing line to simplify structure and lower manufacturing costs.

Merges ultrasonic fingerprint sensing with pixelated displays via shared backplanes to resolve device complexity while maintaining design aesthetics.

A fingerprint sensor integrated touch screen device groups electrode lines to reduce mutual capacitance.

A method isolates fingerprint optical signals by identifying the finger coverage area within sensor data to enhance recognition accuracy.

A display screen serves as a light source for an optical fingerprint sensor to capture images.