Print Image Acquisition TRIZ Cases

Optimized distance between the light-shielding layer and sensor balances overlapped areas, improving fingerprint recognition accuracy.

Liquid crystal deflection directs fingerprint reflections to the sensor, reducing spacer layers and lowering cost compared to external CMOS sensors.

Merging scanning lines into a single unit controls exposure time periods uniformly, resolving non-uniform brightness in fingerprint images.

A display switch and sensor electrode configuration positions components to minimize light obstruction.

Isolated light emitting structures in a fingerprint detector ensure uniform light distribution, resolving accuracy issues caused by uneven backlight incidence.

An integrated ultrasound and infrared sensor system captures thermal radiation to verify biological authenticity.

A three-element imaging lens system with negative and positive focal powers reduces total optical length.

An optical angular selecting structure reduces crosstalk and improves image resolution by blocking large-angle light in compact biometric devices.

Dual matrix openings filter ambient noise and internal reflection by directing only critical angle light to the photo sensor, improving contrast ratio.

An overlapping light-shielding layer reduces optical noise interference from LCD backlight, increasing fingerprint identification accuracy on display panels.

Composite protection layers resolve the tradeoff between sensing accuracy and durability in display devices.

Dynamic luminance calibration isolates ambient light noise from chip dark current, resolving inaccurate calibration in varying environments.

OLED display panel uses light-transmitting holes in the black matrix and electrode layer to route light to under-screen fingerprint sensors.

A finger vein authentication system calculates position and shape without capturing the contour.

A fingerprint identification module integrates a wire grid polarizer as the second electrode layer to reduce structural thickness.

A touch screen integrates fingerprint recognition within the active area using sub electrodes and conductive lines.

An impedance ratio-based current conveyor scales sensor signals using staging circuits and current mirrors.

Median filtering fuses multi-source NIR images to extract vein maps, reducing computational load for handheld authentication.

A fingerprint sensor chip mounts on a support plate fixed to an electronic device middle frame, reducing assembly complexity and precision requirements.

Shutting down the digital device during analog sampling settles parasitic capacitive coupling, improving fingerprint image quality.

A biometric sensor uses a scanning light source to illuminate fingerprint regions on the device surface.

An optical filter assembly uses angle-dependent visible cut-off wavelengths to detect spoof biometric objects.

Probes extend through the glass overlay to maintain signal quality despite dielectric thickness, resolving reliability issues caused by environmental exposure.

A display panel uses a polarizer and phase retarder to shape light for fingerprint sensing.

Masking electrode portions with a secondary conductive layer standardizes sensitivity across capacitive sensors by controlling geometric parameters.

An ultrasonic system detects touch inputs by analyzing reflected signal changes across diverse surfaces.

A metal collimating layer on a display substrate directs parallel light into an optical sensor.

Adjusting the optical sensing array spatial period below half the light-emitting pixel array period divided by zoom ratio.

A fingerprint recognition module merges sensing film layers and a processing unit onto a single adaptor board substrate.

Merging fingerprint sensors into display substrates eliminates separate hardware costs while dynamic electrode driving maintains accuracy.

A half-bridge fingerprint detection circuit uses buried capacitors and a listener electrode to reject common mode noise.

An optical fingerprint sensor employs blocked pixels and a differential amplifier to correct temperature-induced signal distortions in OLED panels.

A flexible transparent block matches finger contours, resolving the trade-off between rigid plate deformation and complex 3D immobilization requirements.

Integrating fingerprint electrodes parallel to display circuits reduces module thickness and manufacturing costs.

Segmented near-infrared LED arrays adjust individual intensities to penetrate deeper veins, resolving lighting uniformity contradictions.

A biometric detection system compares palm images against exclusion data to identify fraudulent inputs.

Common auxiliary layers merge light emission and photosensing on one substrate, resolving recognition degradation from vertical film stacking.

A sensor pixel circuit applies a coupling pulse to modulate detection signals, compensating for reduced capacitance caused by thick protective layers.

Grouping pixel circuits with switching units reduces chip area and power consumption while maintaining detection accuracy.

Merges fingerprint identification and touch control structures into one layer to reduce OLED device thickness and manufacturing costs.

A fingerprint recognition driving circuit adjusts gate potentials to offset threshold voltage variations in ultrasonic sensors.

Dynamic compression sequences capture elevation variations lost in flat scans, enabling accurate identification of Level III features like pores and notches.

A fingerprint sensor chip sits in a substrate groove to reduce module thickness and protect fragile OLED screens from direct attachment damage.

Fourier transform extracts moire frequency components to cancel interference patterns, enabling accurate recognition without mechanical rotation.

A capacitive sensing device integrates touch and fingerprint electrode groups with a shared control circuit to detect capacitance changes.

Specular reflection contrast detection replaces FTIR limitations, enabling high-contrast fingerprint imaging without extensive post-processing.

A photoreactive sensor uses an optical amplification phototransistor to enhance photoconductivity through a non-overlapping region.

An additional shift register addresses localized matrix regions, reducing token propagation delays across the entire TFT panel.

Offset angular diaphragms constrain reflection angles to restore isotropic contrast in millimeter-thick cover layers, resolving resolution trade-offs.

Separating the ultrasonic generator from the detector array with a delay layer resolves interference that reduces image clarity in fingerprint scanning systems.