Print Image Acquisition TRIZ Cases

A guidance interface displays a movable element that dynamically adjusts its position to indicate the required palm-to-device distance for verification.

A prism-based fingerprint sensor uses dual light sources to capture comparative images for identifying spoofed biometric inputs.

A fingerprint sensor package uses thermocompression bonding between composite substrates to join the controller chip securely.

Thin film piezoelectric transducers transmit ultrasound signals to generate high-resolution fingerprint images, eliminating waveguide insertion loss.

Parallel mixed-signal ASICs convert analogue transducer signals to digital data locally within the sensor module.

Superimposing optical and ultrasonic signals widens the ridge-valley difference, enabling accurate identification through water stains or smears.

A search system uses fingerprint collation on handrails to detect targets beyond camera view.

An aperture array aligns microlenses and light-blocking structures to filter angular light ranges, improving image detection accuracy behind displays.

Segmented grounding isolates inactive transmitting elements via a quiet ground, reducing parasitic capacitive coupling and improving fingerprint image quality.

Dual light-shielding layers with transmissive holes form a collimation structure that reduces ambient light reflection while preserving display brightness.

A mediator interposer resolves adhesion conflicts between micro lenses and light-shielding layers, reducing stray light incidence to improve image clarity.

Aligned through holes in laminated light-shielding layers collimate reflected light to resolve fingerprint image blurring and crosstalk.

A fingerprint sensor uses two bonded glass substrates to protect internal electrodes while maintaining detection sensitivity.

Segmented light-shielding regions improve sensor MTF without imparting undesired color in the oblique field of view.

Strategic openings in a light shielding layer block ambient interference while transmitting signal light, improving texture recognition accuracy.

A thermosensitive current generation circuit detects ridge and valley temperature differences to produce a fingerprint signal.

A light sensing unit on a display substrate enables biological recognition without occupying device surface space.

A fingerprint recognizable touch sensor uses a printed circuit board with alternately arranged first and second bonding pads connected via vias.

A pixel and correlated double sampling circuit control current flow to enable high-speed image capturing.

A fingerprint sensing array uses interleaved touch driving lines to detect capacitance changes for simultaneous touch and fingerprint recognition.

Replacing optical backlight modules with capacitive pixels reduces sensor thickness and hardware costs while maintaining high-resolution fingerprint collection.

A fingerprint sensor array merges transparent and low-resistance metal electrodes to detect biometric patterns while maintaining display resolution.

Segmented light-blocking layers with slits accommodate thermal expansion, preventing shape defects while blocking oblique light to improve detection accuracy.

A 3-port piezoelectric micromechanical ultrasonic transducer uses distinct electrode configurations to reduce background signals in imaging sensors.