A sensor detects conductive objects and environmental parameters using variable capacitance and resistance.
Segmenting constant current and AC voltage stages detects signal line breakages without interfering with capacitance measurement accuracy.
A liquid crystal display integrates a measurement tag with common and pixel voltage portions to verify capacitance values.
A two-port test apparatus measures common-mode parasitic capacitance using signal generation and reception devices.
Equipotential circuit matches unused control line potentials to the measured sensor, reducing cross-influence and improving capacitance detection accuracy.
A fingerprint identification device uses separate signal input and reading lines to load detection signals while reading identification signals simultaneously.
A capacitive sensor uses a three-dimensional wiring structure to arrange electrode and jumper layers non-planarly.
A sub-threshold transistor stabilizes input bias voltage through body effect in integrated low-noise sensing circuits.