Abstract: The present disclosure provides a fingerprint sensing sub-circuit, a fingerprint sensing circuit, a fingerprint recognition method, a sensor, a touch display panel and a display device. The fingerprint sensing sub-circuit includes an acoustic wave generation circuit and an acoustic wave reception circuit. The acoustic wave generation circuit is configured to generate an ultrasonic wave. The acoustic wave reception circuit is configured to collect a voltage signal, convert the voltage signal into a current signal, and output the current signal to a signal output end. The acoustic wave generation circuit and the acoustic wave reception circuit are separated from each other, so that the fingerprint sensing sub-circuit operates in a mode where a transmitting operation and a receiving operation are separated from each other.

Abstract: Provided are a display substrate, a preparation method thereof, and a display apparatus. The display substrate includes a substrate, an array structure layer disposed on the substrate, a plurality of emitting units and a plurality of ultrasonic transducers disposed at intervals on a side of the array structure layer away from the substrate, wherein the ultrasonic transducers are disposed between adjacent emitting units, and the array structure layer includes a transducer drive circuit connected to the ultrasonic transducer, and the transducer drive circuit is configured to control the ultrasonic transducer to transmit ultrasonic waves and receive voltage signals generated by the ultrasonic transducer receiving echoes.

Abstract: The present application provides a display device, a sounding control method and a sounding control device. The display device includes: a display panel including a plurality of display pixel groups, wherein each display pixel group includes at least one pixel unit; a plurality of sounding units arranged in an array at one side of the display panel away from a display screen; and sound transmission channels in spacing regions between adjacent ones of the display pixel groups. Sound produced by the sounding units is output from the display panel through the sound transmission channels, and sound produced by different ones of the sounding units is output through different ones of the sound transmission channels.

Abstract: A fingerprint identification module, a manufacturing method and driving method thereof, and a display device. The fingerprint identification module includes: a driving backplate, including a substrate, identification circuits on the substrate, the identification circuits having a first electrode pad, a second electrode pad; acoustic units including: a first electrode; a piezoelectric film layer positioned on the side, close to the driving backplate, of the first electrode; a second electrode positioned on the side, close to the driving backplate, of the piezoelectric film layer; a first lead-out terminal electrically connected with the first electrode; a second lead-out terminal electrically connected with the second electrode; cavities being in one-to-one correspondence to the acoustic units, the cavities positioned between the second electrodes and the substrate, and one side face, away from the substrate, of cavity being defined by at least one side face, close to the substrate, of the second electrode.

Abstract: A display module, a display device and a method of forming a display module are provided. The display module includes: a display sounding structure including a display panel and an auxiliary layer connected to the display panel; an excitation source configured to drive the display panel, the display module further includes a supporting frame, and the display panel is connected to the supporting frame through the auxiliary layer; or an excitation source configured to drive the auxiliary layer to vibrate and sound, the auxiliary layer is a transparent film layer arranged at a light-emitting side of the display panel cooperating with the display panel to form a sounding chamber in an enclosing manner.

Abstract: A fingerprint identification module and a driving method therefor, and a display apparatus. The fingerprint identification module includes a base substrate and a plurality of fingerprint identification regions located on the base substrate, each fingerprint identification region includes a plurality of receiving electrodes, a piezoelectric material layer and a plurality of driving electrodes; and the plurality of receiving electrodes, the piezoelectric material layer and the plurality of driving electrodes form a plurality of ultrasonic sensors.

Abstract: Embodiments of the present disclosure provide a flexible acoustic-electric substrate and a preparation method thereof, and a flexible acoustic-electric device. The preparation method of a flexible acoustic-electric substrate includes: forming a flexible substrate; forming a plurality of piezoelectric components on the flexible substrate; and forming a plurality of chambers on the flexible substrate in a one-to-one correspondence relationship with the plurality of piezoelectric components, and the plurality of chambers are located on a side of the flexible substrate away from the plurality of piezoelectric components.

Abstract: An ultrasonic fingerprint recognition module is described that includes sensing units distributed in the form of array, where the sensing units include: a receiving electrode layer having a plurality of receiving electrodes distributed in the form of array; a piezoelectric material layer disposed on one side of the receiving electrode layer; an emission electrode layer disposed on a side of the piezoelectric material layer distal to the receiving electrode layer, and including a plurality of rows of emission electrodes; a selection circuit having an input terminal which is connected with an excitation signal and an output terminal which is connected with the emission electrode for selecting to transmit the excitation signal to the plurality of emission electrodes; and a pixel receiving circuit connected to the receiving electrode layer that receives a fingerprint signal.

Abstract: A fingerprint identification circuit and a driving method thereof, a fingerprint identification module, and a display device are provided. The fingerprint identification circuit includes a plurality of first signal receiving circuit groups, a plurality of second signal receiving circuit groups, and a plurality of first signal acquisition lines. The plurality of first signal acquisition lines are arranged in one-to-one correspondence with the plurality of first signal receiving circuit groups, and each first signal acquisition line is connected with multiple first acquisition signal input terminals of multiple signal receiving circuits in a corresponding one of the first signal receiving circuit groups.

Abstract: A circuit for generating and detecting ultrasonic sensing signals is provided. A piezoelectric device having a transmitting electrode and a receiving electrode is coupled to a biasing-and-sampling sub-circuit configured to set different bias voltages to the receiving electrode. The piezoelectric device is configured to transmit an ultrasonic signal upon applying an exciting pulse signal to the transmitting electrode and alternatively to generate a voltage signal at the receiving electrode upon receiving an echo signal based on the ultrasonic signal. A signal-collecting sub-circuit is coupled to the receiving electrode to determine a first sampling voltage based on the voltage signal at the receiving electrode in a first sampling period and a second sampling voltage based on the voltage signal at the receiving electrode in a second sampling period. An output sub-circuit is coupled to the signal-collecting sub-circuit for outputting the first sampling voltage and the second sampling voltage at a same time.

Abstract: The present disclosure provides a touch panel including: a touch region having a plurality of ultrasonic signal detection circuits and a reference region having a plurality of reference circuits, each ultrasonic signal detection circuit includes an ultrasonic sensor and a first driving circuit; the ultrasonic sensor includes a first electrode, a second electrode, and a dielectric layer between the first electrode and the second electrode, the first driving circuit is configured to drive the ultrasonic sensor; each of the plurality of reference circuits includes a reference transceiver and a second driving circuit, the reference transceiver includes a third electrode, a fourth electrode, and a dielectric layer between the third electrode and the fourth electrode; the second driving circuit is configured to drive the reference transceiver; the dielectric layer of the ultrasonic sensor has piezoelectric sensitivity; the dielectric layer of the reference transceiver does not have the piezoelectric sensitivity.

Abstract: A piezoelectric sensor assembly, a manufacturing method thereof, a display panel and an electronic device including the same are provided. The piezoelectric sensor assembly includes: a base substrate; a plurality of ultrasonic transducers, wherein a spacing area is provided between two adjacent ultrasonic transducers; and an acoustic matching layer, wherein the acoustic matching layer includes a plurality of acoustic matching areas, and an orthographic projection of at least one acoustic matching area on the base substrate falls into an orthographic projection of the ultrasonic transducer corresponding to the acoustic matching area on the base substrate, wherein an isolation cavity is provided between two adjacent acoustic matching areas.

Abstract: A piezoelectric sensor and a manufacturing method thereof, a method for recognizing a fingerprint, and an electronic device are disclosed. The piezoelectric sensor includes a first electrode layer and a second electrode layer which are opposite to each other and a piezoelectric layer. The piezoelectric layer is between the first electrode layer and the second electrode layer and includes a plurality of piezoelectric units arranged at intervals and an insulation layer between adjacent piezoelectric units of the plurality of piezoelectric units. The first electrode layer includes a plurality of sub-electrodes corresponding to the plurality of piezoelectric units, or the second electrode layer includes a plurality of sub-electrodes corresponding to the plurality of piezoelectric units; or both the first electrode layer and the second electrode layer include a plurality of sub-electrodes corresponding to the plurality of piezoelectric units.

Abstract: A sounding device, a manufacturing method thereof and a display device are provided. The sounding device includes at least two sounding units. Each of the sounding units includes: a transparent structural layer, including a recess and a supporting member located around the recess; and a piezoelectric vibrating film covering the recess, a cavity is formed by the piezoelectric vibrating film and the supporting member. The piezoelectric vibrating film includes a base film covering the recess; and at least one piezoelectric structure located on a side of the cavity away from the transparent structural layer. Each of the at least one piezoelectric structure includes: a first electrode; a piezoelectric material layer located on a side of the first electrode away from the cavity; and a second electrode located on a side of the piezoelectric material layer away from the first electrode.

Abstract: Embodiments of the present disclosure provide an ultrasonic fingerprint identification circuit, a driving method thereof, and a fingerprint identification device. The circuit includes a transmitting electrode, a receiving electrode, a piezoelectric layer disposed between the transmitting electrode and the receiving electrode, and a signal output unit, the transmitting electrode is configured to receive an alternating current signal in a transmitting stage; the receiving electrode is connected with the signal output unit. The circuit further includes a photosensitive unit, with an anode connected with the receiving electrode and a cathode connected with a first fixed electric level so that the photosensitive unit is in a reverse bias state.

Abstract: A fingerprint identification module, a manufacturing method thereof, a driving method thereof, and a display device are disclosed. The fingerprint identification module includes: a plurality of ultrasonic wave receiving sensors, configured to receive an ultrasonic wave; and at least one ultrasonic wave emission sensor, configured to emit an ultrasonic wave, each of the plurality of ultrasonic wave receiving sensors includes a first piezoelectric material layer, each of the at least one ultrasonic wave emission sensor includes a second piezoelectric material layer, and a material of the first piezoelectric material layer is different from a material of the second piezoelectric material layer.

Abstract: The present disclosure provides an ultrasonic sensor, a method for driving the same, and a method for manufacturing the same. The ultrasonic sensor includes a back plate, a sounding structure on the back plate and a backing layer on a side of the sounding structure distal to the back plate; the sounding structure includes a plurality of emitting electrodes, an opposite electrode, a piezoelectric layer and a plurality of signal leads, and the plurality of emitting electrodes and the opposite electrode are respectively arranged on two sides of the piezoelectric layer; and the plurality of emitting electrodes are arranged in an array, and each of the emitting electrodes is individually coupled to one of the signal leads. The ultrasonic sensor may achieve an independent control for each patterned electrode such that the ultrasonic sensor may be used as a point sound source.

Abstract: A fingerprint identification module and a driving method thereof and an electronic device are provided. In the fingerprint identification module, a receiving electrode layer includes a plurality of receiving electrodes; a first driving electrode layer is arranged at a side of a piezoelectric material layer away from the receiving electrode layer and includes a plurality of first driving electrodes; a second driving electrode layer is arranged at a side of the receiving electrode layer away from the piezoelectric material layer and includes a plurality of second driving electrodes; the plurality of first driving electrodes and the plurality of second driving electrodes form a plurality of driving electrode pairs, and in each driving electrode pair, an orthographic projection of the first driving electrode on the piezoelectric material layer is at least partially overlapped with an orthographic projection of the second driving electrode on the piezoelectric material layer.

Abstract: A fingerprint identification module, a manufacturing method thereof and an electronic device are disclosed.

Abstract: An ultrasonic fingerprint recognition module is described that includes sensing units distributed in the form of array, where the sensing units include: a receiving electrode layer having a plurality of receiving electrodes distributed in the form of array; a piezoelectric material layer disposed on one side of the receiving electrode layer; an emission electrode layer disposed on a side of the piezoelectric material layer distal to the receiving electrode layer, and including a plurality of rows of emission electrodes; a selection circuit having an input terminal which is connected with an excitation signal and an output terminal which is connected with the emission electrode for selecting to transmit the excitation signal to the plurality of emission electrodes; and a pixel receiving circuit connected to the receiving electrode layer that receives a fingerprint signal.