Abstract: An ultrasonic sensor, a preparation method of the ultrasonic sensor, and a display apparatus are provided. The ultrasonic sensor includes a texture recognition region and a contrast region. The contrast region is located on at least one side of the texture recognition region. The texture recognition region includes at least one recognizing unit, and the contrast region includes at least one contrast unit. The at least one recognizing unit includes a first dielectric material layer, and the at least one contrast unit includes a second dielectric material layer. The first dielectric material layer and the second dielectric material layer are made of a same material. The first dielectric material layer exhibits piezoelectric properties. A piezoelectric strain constant of the first dielectric material layer is greater than a piezoelectric strain constant of the second dielectric material layer.

Abstract: A display device and an operation method of the display device are provided in the present disclosure. The display device includes a display screen a sound-generation driving module, and further includes an acoustic scanning module, arranged on a non-display side of the display screen and configured to determine a spatial contour of a space where the display device is located through acoustic scanning; a viewer position detection module, configured to detect viewer coordinates in the space where the display device is located; and a control module, configured to control the sound-generation driving module to generate sound in accordance with the spatial contour and the viewer coordinates.

Abstract: The present disclosure provides a display panel, a fabricating method and a control method thereof and a display device. Display panel includes a display assembly and sound generation assemblies. Display assembly includes a display assembly substrate and pixel components disposed on a side of display assembly substrate. Each sound generation assembly includes a vibrating membrane, an exciter, and a support structure. Support structure is disposed on a side of vibrating membrane and has a cavity. Exciter includes a motion part in contact with vibrating membrane and a drive part disposed in cavity. Drive part drives motion part to vibrate, and motion part vibrates to drive vibrating membrane to vibrate. Display assembly substrate and vibrating membrane are the same structure, and pixel components are disposed on a side of vibrating membrane facing away from support structure. Display device includes the display panel above.

Abstract: A method for identifying a potential landslide hazard of a reservoir bank based on a rock mass degradation feature, includes: determining a remote sensing interpretation identification mark of a potential landslide hazard site induced by rock mass degradation of a hydro-fluctuation belt of a bank slope, and establishing a potential landslide hazard site catastrophe evolution identification model; obtaining an orthoimage of a degradation belt, performing preliminary remote sensing interpretation on the orthoimage, and delineating an area prone to landslide; obtaining an oblique real-scene three-dimensional model of the area prone to landslide by the orthoimage, generating digital elevation model (DEM) data according to the oblique real-scene three-dimensional model for remote sensing fine interpretation, and identifying and extracting the mark; and inputting the mark into the potential landslide hazard site catastrophe evolution identification model to identify a catastrophe evolution mode of the potential lan

Abstract: A light-emitting diode (LED) chip includes a plurality of epitaxial structures, at least one first electrode, and a plurality of second electrodes. Any two adjacent epitaxial structures of the plurality of epitaxial structures have a gap therebetween. Each epitaxial structure includes a first semiconductor pattern, a light-emitting pattern and a second semiconductor pattern stacked in sequence. First semiconductor patterns in at least two of the plurality of epitaxial structures are connected to each other to form a first semiconductor layer. A first electrode is electrically connected to the first semiconductor layer. Each second electrode is electrically connected to the second semiconductor pattern in at least one of the plurality of epitaxial structures.

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: The disclosure provides a display substrate, a display panel and a display device. The display substrate has a display area and a peripheral area surrounding the display area, and includes: a first base; multiple pixel units in the display area and on the first base, each pixel units includes a thin film transistor and a first electrode, in each pixel unit, a second electrode of the thin film transistor is electrically coupled with the first electrode through a first via hole penetrating through an interlayer insulating layer; and an auxiliary functional layer located in the display area and on a side, away from the first base, of the first electrode; an orthographic projection of the auxiliary functional layer on the first base covers at least a part of an orthographic projection of the first via hole on the first base, and defines an active display area of each first electrode.

Abstract: The present disclosure provides a sound producing device, a method for driving the sound producing device, a display panel and a display apparatus. The sound producing device includes a recognition element, a directional sound production element and a control element, where the recognition element is connected with the control element and is configured to acquire information relating to a person in a preset range and transmit the acquired information relating to the person to the control element; the control element is connected with the directional sound production element and is configured to acquire a corresponding audio signal according to the acquired information relating to the person and control the directional sound production element to send out a sound wave according to the acquired audio signal.

Abstract: The present disclosure provides a fingerprint recognition module, a driving method thereof, a manufacturing method thereof, and a display device. The fingerprint recognition module includes a receiving electrode layer, a piezoelectric material layer, and a driving electrode layer. The receiving electrode layer includes a plurality of receiving electrodes arranged in an array along a first direction and a second direction. The piezoelectric material layer is disposed on a side of the receiving electrode layer. The driving electrode layer is disposed on a side of the piezoelectric material layer remote from the receiving electrode layer and includes a plurality of driving electrodes arranged along the second direction. Each driving electrode is a strip electrode extending along the first direction, and overlaps with multiple receiving electrodes arranged along the first direction.

Abstract: An ultrasonic pattern recognition assembly comprising: a substrate; a receiving member comprising at least one receiving electrode disposed on the substrate; a piezoelectric layer disposed on the substrate and covering the receiving member; a seed member comprising at least one seed block disposed on at least a portion of the piezoelectric layer; an insulating member disposed on the seed member and having at least one exposed portion, the at least one exposed portion exposing a portion of a surface of the seed member; and a transmitting member comprising at least one transmitting electrode disposed on the seed member, the at least one transmitting electrode extending from a surface of the seed member exposed by the exposed portion in a direction away from the substrate. A display device and a method of fabricating an ultrasonic pattern recognition assembly are also disclosed.

Abstract: An optical detection apparatus and method for detecting a display panel is provided. The apparatus includes photosensitive units arranged in an array. A minimum distance between adjacent photosensitive units is less than a sub-pixel size of the display panel; the photosensitive units in adjacent rows have a position offset in a first direction; and an offset distance corresponding to the position offset is less than the sub-pixel size of the display panel.

Abstract: A semiconductor apparatus and a method for manufacturing the semiconductor apparatus are provided. The semiconductor apparatus includes: a base substrate; a chip arranged on the base substrate, wherein the chip includes a chip main body and a plurality of terminals arranged on the chip main body; a terminal expansion layer arranged on the base substrate, the terminal expansion layer including a conductive material, and the terminal expansion layer and at least one terminal are located on a same side of the chip main body; and a plurality of expansion wires in the terminal expansion layer, wherein the plurality of expansion wires are electrically connected to the plurality of terminals, respectively, to lead out the plurality of terminals, wherein an orthographic projection of at least one expansion wire on the base substrate completely covers an orthographic projection of a terminal electrically connected to the expansion wire on the base substrate.

Abstract: A semiconductor apparatus and a method for manufacturing the semiconductor apparatus are provided. The semiconductor apparatus includes: a base substrate; a plurality of chips arranged on the base substrate each including a chip main body and a plurality of terminals arranged thereon; a plurality of fixed connection portions arranged on the base substrate, and adjacent to the plurality of chips; a terminal expansion layer arranged on the base substrate; and a plurality of expansion wires in the terminal expansion layer and configured to electrically connect the chips, wherein an expansion wire configured to electrically connect two chips includes at least a first wire segment and a second wire segment, and the first wire segment is configured to electrically connect a terminal of a chip and a fixed connection portion adjacent to the chip, and the second wire segment is configured to connect two fixed connection portions between the two chips.

Abstract: A detection panel, a display apparatus, a method for driving the detection panel, and a method for manufacturing the detection panel are provided. The detection panel includes an upper electrode layer, a piezoelectric material layer and a conductive backing layer which are sequentially stacked. The piezoelectric material layer is configured to change an electric field between the upper electrode layer and the conductive backing layer under an ultrasonic wave, and generate an ultrasonic wave under an electric field. The conductive backing layer includes a plurality of noise elimination members, and each of the noise elimination members has a dimension in a direction parallel to the detection panel that gradually decreases in a direction distal to the piezoelectric material layer.

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 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 display panel and an operation method thereof are disclosed. In the display panel, a second light-emitting device is configured to emit a second light ray to the non-display side, and a second photosensitive element is configured to allow the second light ray to be incident therein and detect the second light ray. A first light-emitting device and the second light-emitting device are configured to emit a first light ray to the display side, and a first photosensitive element is configured to allow the first light ray reflected by an external object to be incident therein and detect the reflected first light ray. The second light ray is of a type different from that of the first light ray.

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 panel, a display assembly, a display apparatus and a drive method therefor are disclosed. The display panel includes a first display area and at least one second display area. The first display area includes first sub-pixels, and the first sub-pixels are non-transparent sub-pixels. The at least one second display area includes second sub-pixels, and the second sub-pixels are transparent sub-pixels.