A fingerprint sensing system. The fingerprint sensing system includes: at least one sensor; at least one display device; at least one application processor; and at least one secure enclave processor. The application processor(s) receives fingerprint data from the sensor(s) and provides the fingerprint data to the secure enclave processor(s). The secure enclave processor(s) decodes the fingerprint data and provides a signal indicative of at least one matched node. The application processor(s), responsive to receipt of the signal indicative of the matched node(s), presents at least a portion of a synthetic fingerprint image via at least one display device corresponding to the matched node(s).

A fingerprint recognition module according to an embodiment includes a substrate; a conductive pattern portion disposed on the substrate; a protective layer partially disposed on the substrate and the conductive pattern portion; a first connection portion disposed on a conductive pattern portion exposed through a first open region of the protective layer; and a first chip disposed on the first connection portion; wherein the first connection portion includes an anisotropic conductive adhesive disposed on the conductive pattern portion exposed through the first open region and having a closed loop shape and including conductive particles.

Disclosed are a fingerprint identification structure, a driving method thereof and an electronic device. The fingerprint identification structure includes: a driving electrode layer; a piezoelectric material layer; a receiving electrode layer, which includes M receiving electrodes; an auxiliary driving electrode layer, which is located at the side of the piezoelectric material layer away from the receiving electrode layer, and is arranged in a layer different from the driving electrode layer; and a first insulating layer, the auxiliary driving electrode layer includes N auxiliary driving electrodes; the N driving electrodes and the N auxiliary driving electrodes are alternately arranged; and the orthographic projection, on the piezoelectric material layer, of an i-th auxiliary driving electrode overlaps with an interval between the orthographic projections, on the piezoelectric material layer, of an i-th driving electrode and an (i+1)-th driving electrode.

An input sensing circuit includes a plurality of sensors to sense a touch event and to recognize a fingerprint. Among the sensors, at least one sensor includes two transistors and one capacitor. One electrode of electrodes of the capacitor makes contact with a finger of a person to form a capacitance, and the input sensing circuit senses the capacitance to sense the touch event and to recognize the fingerprint.

Provided are an ultrasonic fingerprint identification circuit, a driving method thereof, and a display device. The ultrasonic fingerprint identification circuit comprises fingerprint identification units each including an ultrasonic fingerprint identification sensor connected to a first node; a control module connected to a composite signal line, a first control signal line and the first node and configured to provide a reset potential to the first node and to provide a pull-up potential to the first node in response to a first level provided by the composite signal line; a reading module connected to a second control signal line, the first node and a reading signal line, and configured to read a detection signal of the first node. The first control signal line connected to one fingerprint identification unit is reused as the second control signal line connected to another fingerprint identification unit.

Systems, devices, and methods that ensures that an ultrasonic fingerprint detection process is not interfered with by using a screen protector. An example screen protector for a mobile device is disclosed that is capable of an in-screen fingerprint detection. The screen protector includes a first layer made of a clear rigid material and configured to be touched by a user. The screen protector also includes a second layer beneath the first layer and made of a film. Additionally, the screen protector includes a third layer beneath the second layer and configured to contact the mobile device. The third layer includes a fingerprint conduit configured to facilitate the in-screen fingerprint detection.

An electronic device includes a flexible display, a capacitive fingerprint sensor, a driving circuit and a plurality of signal lines. The flexible display includes a plurality of light emitting diodes. The capacitive fingerprint sensor is disposed on the flexible display. The plurality of the signal lines is electrically connected to the capacitive fingerprint sensor and the driving circuit.

Improving the accuracy of ultrasonic touch sensing and fingerprint imaging using acoustic impedance matching is disclosed. Acoustic impedance mismatches between an ultrasonic transducer array and a sensing plate can be reduced to maximize energy transfer and minimize parasitic reflections. A reduction in acoustic impedance mismatches can be accomplished using (i) a composite epoxy having a higher acoustic impedance than epoxy alone, (ii) one or more matching layers having an acoustic impedance that is approximately the geometric mean of the acoustic impedance of the sensing plate and the acoustic impedance of the transducer array, (iii) pores or perforations in the sensing plate, or (iv) geometric structures formed in the sensing plate. In addition, parasitic reflections can be suppressed using an absorbent layer.

A flexible sensing device includes a flexible substrate selected from a bismaleimide-triazine resin substrate, an ajinomoto build-up film substrate, and a polyimide film substrate. A plurality of first sensing stripes are formed on the flexible substrate and are spaced apart from each other in a first direction. A dielectric film is superposed on the first sensing stripes. A plurality of second sensing stripes are formed on the dielectric film and are spaced apart from each other in a second direction. Each second sensing stripe crosses over the first sensing stripes and is spaced apart from the first sensing stripes by the dielectric film. A method of making the same is also disclosed.

A fingerprint sensing device includes a double-sided substrate between first and second flexible substrate, and first strip electrodes formed on the double-sided substrate and contacting first electroconductive pads disposed on the first flexible substrate and downwardly contacting connecting pads on a second flexible substrate. Second strip electrodes are formed on the double-sided substrate and downwardly contacting second electroconductive pads disposed on the second substrate. The connecting pads and the second electroconductive pads are electrically connected to a chip unit. A method of making the same is also disclosed.