A capacitive proximity sensor 1 comprises an oscillation means 33; a sensor circuit 10, which includes a sensor electrode 11; a detection circuit 20, which outputs a determination voltage signal corresponding to the capacitance of the sensor electrode 11, based on the electrical signal output from the sensor circuit 10; and a control unit 32. The sensor electrode 11 is connected in parallel to a connection point P1 between a coil L and a capacitor C in an LCR series resonance circuit. The detection circuit 20 outputs a determination voltage signal S.sub.1 based on the electrical signal at the detection point P3 between the capacitor C and the resistor R. The control unit 32 detects the proximity of a human body to the sensor electrode 11, based on the determination voltage signal S.sub.1.

A sensor device which can be used, for example, for an operating device, for example of an electronic household appliance, in order to detect a movement and/or position of a first component relative to a second component. The first component can be moved about a or in the direction of an axis of movement along a movement path, includes a sensor electrode arrangement on the second component and a signal element on the first component opposite and at a distance to the sensor electrode arrangement. The signal element has electrically conductive sections and electrically non-conductive sections, as well as a sensor control system for inputting sensor signals and receiving measurement signals at/from the sensor electrode arrangement and an evaluation unit for determining a movement and/or position of the first component relative to the second component based on the measurement signals of the sensor control system.

Provided is a foldable display device, including a display screen body and a rotating shaft; wherein the rotating shaft divides the display screen body into a first screen body and a second screen body; wherein the display screen body is used to be folded along the rotating shaft, and the display screen body is provided with capacitance detecting electrodes for detecting a folded state of the display screen body, and the capacitance detecting electrodes include a first electrode disposed on the first screen body and a second electrode disposed on the second screen body corresponding to the first electrode.

At a rim portion of a steering wheel, a shielding layer is disposed between a sensor electrode and a rim metal core portion. The shielding layer extends with respect to the sensor electrode. Therefore, generation of capacitive coupling between the sensor electrode and the rim metal core portion can be suppressed properly by the shielding layer, and parasitic capacitance that is generated at the sensor electrode can be reduced.

A capacitance detection apparatus and an electronic device are disclosed. The capacitance detection apparatus includes: a sensing module, a connecting circuit, and a differential detection circuit for detecting changes in capacitance of the sensing module; the sensing module comprises: a substrate, and a first sensing layer and a second sensing layer respectively located on two sides of the substrate; a first sensing unit of the first sensing layer is opposite to a second sensing unit of the second sensing layer, and the first sensing unit covers the second sensing unit; the first sensing unit and the second sensing unit are electrically connected to the differential detection circuit. When a detection object approaches the capacitance detection apparatus, the capacitance of the first sensing unit is influenced by the temperature and the detection object, and the capacitance of the second sensing unit is only influenced by the temperature.

An occupant or object sensing system in a vehicle includes electrical circuits for capacitive sensing and corresponding circuits shielding the sensing system from interference. A sensing circuit and a shielding circuit may be printed by screen printing with conductive ink on opposite sides of a non-conductive substrate. The substrate is a plastic film or other fabric that has an elastic memory structure that is resilient to stretching. The conductive inks used to print circuits onto the substrate have a similar resilience to stretching such that the substrate and the circuits thereon can be subject to deforming forces without breaking the printed circuits. The substrate may be covered with a carbon polymer layer to provide alternative conductive paths that enable fast recovery for conduction in the presence of any break in the printed conductive traces on the substrate.

A display device includes a flexible substrate, a display layer disposed on the flexible substrate and including a plurality of light emitting units, a plurality of first conductive lines disposed on the display layer, at least one of which comprises a plurality of first openings, and a plurality of second conductive lines disposed on the display layer and intersecting the plurality of first conductive lines to form a plurality of bending sensor units. At least one of the plurality of bending sensor units is disposed between and does not overlap at least two adjacent light emitting units of the plurality of light emitting units in a top view of the display device. At least one of the plurality of first openings does not overlap the at least two adjacent light emitting units.

A capacitance detection method of a touch display panel, a capacitance detection circuit, and an electronic device are provided. The method includes: receiving a real-time sync signal sent from a display panel, and generating a trigger signal in a period in which a display driving noise is avoided based on the real-time sync signal (S1); generating a sync driving signal in the period in which the display driving noise is avoided based on the received trigger signal, to drive a driving electrode of the touch display panel (S2); and detecting a signal value of a capacitance sensor in the touch display panel in the period in which the display driving noise is avoided based on the received trigger signal (S3). This method is little affected by the display driving operation, and improves the signal-to-noise ratio (SNR) of a finally detected effective signal, thus greatly improving the touch sensitivity.

A capacitive proximity measurement system may include a sensor electrode configured to be positioned proximate to a conductive measurement area on a test surface of a sample, a plate connector configured to provide an electrical connection between a system ground and a conductive plate parallel to the test surface, and a controller. A measurement circuit may be formed between the sensor electrode and the conductive plate, where the test surface is electrically floating with respect to the sensor electrode and the conductive plate. The controller may further adjust a voltage of the sensor electrode with respect to the conductive plate, determine a capacitance associated with the measurement circuit, and determine a distance between the electrode and the measurement area based on the capacitance associated with the measurement circuit.

A capacitive proximity measurement system may include a sensor electrode configured to be positioned proximate to a conductive measurement area on a test surface of a sample, a plate connector configured to provide an electrical connection between a system ground and a conductive plate parallel to the test surface, and a controller. A measurement circuit may be formed between the sensor electrode and the conductive plate, where the test surface is electrically floating with respect to the sensor electrode and the conductive plate. The controller may further adjust a voltage of the sensor electrode with respect to the conductive plate, determine a capacitance associated with the measurement circuit, and determine a distance between the electrode and the measurement area based on the capacitance associated with the measurement circuit.