Abstract: The display panel comprises: a display substrate and a touch detection device; wherein the touch detection device comprises: a touch substrate located on a side of the display substrate away from a display surface, and a plurality of ultrasonic detection units located on a side of the touch substrate away from the display substrate; the ultrasonic detection unit comprises: a first electrode located on a side of the touch substrate away from the display substrate, a plurality of second electrodes between the touch substrate and the first electrode, and a piezoelectric induction layer between the first electrode and the second electrodes; in a fingerprint recognition stage, at least a part of the ultrasonic detection units in a fingerprint recognition area are used as an ultrasonic-generating source, and the second electrodes in at least a part of the ultrasonic detection units in the fingerprint recognition area respectively output fingerprint recognition signals.

Abstract: The present disclosure provides an ultrasonic sensor, a display panel and a display apparatus. The ultrasonic sensor includes: a bearing substrate; an ultrasonic emission structure on the bearing substrate, wherein the ultrasonic emission structure includes a first piezoelectric film layer; and an ultrasonic receiving structure on the bearing substrate, wherein the ultrasonic receiving structure includes a second piezoelectric film layer. The piezoelectric constant of the first piezoelectric film layer is greater than the piezoelectric constant of the second piezoelectric film layer.

Abstract: A display panel includes a base substrate; light-emitting devices on the base substrate; photosensitive devices between a layer where the light-emitting devices are located and the base substrate, the photosensitive devices being configured to collect light emitted by the light emitting devices and reflected by a fingerprint, and orthographic projections of the photosensitive devices on the base substrate being located in gaps between orthographic projections of the light-emitting devices on the base substrate; and a light-shielding portion on a light-incident side of the photosensitive devices, an orthographic projection of the light-shielding portion on the base substrate overlapping with edge regions of the orthographic projections of the photosensitive devices, the light-shielding portion being provided with first openings, and the orthographic projections of the first openings on the base substrate overlapping with middle regions of the orthographic projections of the photosensitive devices.

Abstract: The present disclosure provides a backlight substrate, a manufacturing method thereof, and a display device. The backlight substrate includes: a base substrate; a plurality of first light emitting elements on the base substrate and configured to emit first light; a plurality of second light emitting elements on the base substrate and configured to emit second light having a different wavelength from the first light; a plurality of depth sensors on the base substrate and configured to receive the second light emitted from the plurality of second light emitting elements and reflected by an object and determine depth information of the object based on the received second light; and a diffusion layer in direct contact with light emitting surfaces of the plurality of first light emitting elements and configured to diffuse the first light emitted from the plurality of first light emitting elements.

Abstract: The present disclosure relates to the field of fingerprint identification technology, and provides a fingerprint identification substrate, a fingerprint identification method and a display device. The fingerprint identification substrate includes: a base substrate; at least one point light source arranged on the base substrate and configured to emit signal light; and at least one photosensitive unit arranged at a side of the base substrate away from the point light source, and configured to receive the signal light reflected by a finger and identify a fingerprint. Each photosensitive unit includes a first photosensitive sensor and a second photosensitive sensor independent of each other, a light filtration structure is arranged at a side of the second photosensitive sensor facing the point light source and configured to merely allow light in a first direction to pass therethrough, and the first direction is perpendicular to the base substrate.

Abstract: A fingerprint identification sensor includes a base, and at least one light sensing unit disposed on the base. The at least one light sensing unit is configured to collect at least two different monochromatic lights of light reflected by a finger to identify a fingerprint.

Abstract: The present disclosure provides an array substrate and a display device. The array substrate includes a substrate, a pixel unit and a measurement unit on the substrate, and a compensation element. The measurement unit includes: a photosensitive device configured to detect a luminous intensity of the pixel unit; a thermosensitive device configured to measure an operating temperature of the photosensitive device; and a light source device configured to provide light to the thermosensitive device. An orthographic projection of the light source device on the substrate is within an orthographic projection of the thermosensitive device on the substrate. The compensation element is configured to compensate the luminous intensity of the pixel unit according to the luminous intensity of the pixel unit detected by the photosensitive device and the operating temperature of the photosensitive device measured by the thermosensitive device.

Abstract: An array substrate is provided. The array substrate includes a base substrate and a plurality of gate lines, a plurality of data lines, a common electrode layer and a plurality of pixel units arranged in an array disposed on the base substrate. Each of the pixel units includes a plurality of sub-pixel units defined by gate lines and data lines disposed to intersect each other laterally and vertically. The common electrode layer includes a plurality of common electrode blocks that double as self-capacitance electrodes, each of the common electrode blocks is connected with at least one wire, and the wires are in the middle of sub-pixel units of a same column.

Abstract: A driving method and a driving device of a display panel and a display apparatus are provided. The driving method includes: loading, within a fingerprint recognition phase (t), a plurality of operating signals to a plurality of operating signal leads (20) connected to a gate driving circuit (200), each operating signal (VGH_G) including first level signals and second level signals which are loaded alternately, and a time that the operating signal (VGH_G) switches between the first level signal and the second level signal being a switching time; and loading, within the fingerprint recognition phase (t), a plurality of fingerprint pulse signals to a plurality of fingerprint scanning leads (30), respectively, and for any fingerprint scanning lead (30), a time when the fingerprint scanning lead is loaded with a fingerprint pulse signal and is in an active level state does not overlap with the switching time.

Abstract: A method for fabricating a touch display substrate and a touch display substrate are provided to solve the problem that existing touch electrodes of the micron-scale line width cannot meet the high PPI requirement. The fabrication method includes forming functional layers of an organic light-emitting diode (OLED) device on a base substrate sequentially to obtain an OLED substrate; and forming a linear touch electrode with a nano-scale line width on the OLED substrate by electronic sputtering and transferring.

Abstract: An array substrate, a touch panel and a manufacturing method of an array substrate are provided. The array substrate includes a base substrate and a plurality of gate lines, a plurality of data lines, a common electrode layer and a plurality of pixel units arranged in an array disposed on the base substrate. Each of the pixel units includes a plurality of sub-pixel units defined by gate lines and data lines disposed to intersect each other laterally and vertically. The common electrode layer includes a plurality of common electrode blocks that double as self-capacitance electrodes, each of the common electrode blocks is connected with at least one wire, and the wires are in the middle of sub-pixel units of a same column.

Abstract: An ultrasonic fingerprint sensor apparatus is provided. The ultrasonic fingerprint sensor apparatus includes a base substrate; a first electrode layer on the base substrate, and including an array of a plurality of first electrodes spaced apart from each other by an inter-electrode region; a piezoelectric layer on a side of the first electrode layer away from the base substrate; a second electrode layer on a side of the piezoelectric layer away from the base substrate, and including one or more second electrodes; and a first reference electrode layer configured to provide a first reference voltage. An orthographic projection of the first electrode layer on the base substrate is substantially non-overlapping with an orthographic projection of the second electrode layer on the base substrate. The first electrode layer and the first reference electrode layer are between the base substrate and the piezoelectric layer.

Abstract: Disclosed are a display substrate, a display device and a detection method by using a display device. The display substrate includes at least one sub-pixel, the at least one sub-pixel includes a first region and a second region, and the at least one sub-pixel includes a light emitting element which is arranged in the first region, and a pixel circuit structure and a photosensitive structure which are arranged in the second region; the pixel circuit structure and the photosensitive structure are stacked, and the photosensitive structure is closer to a light exiting side of the display substrate than the pixel circuit structure.

Abstract: An ultrasonic generator includes a substrate, a lower electrode on the substrate, an upper electrode on the lower electrode, and an ultrasonic generation unit between the lower electrode and the upper electrode. The ultrasonic generation unit includes a vibration chamber and an ultrasonic generation layer on the vibration chamber. The ultrasonic generation layer is configured to propel a surrounding medium to vibrate to generate ultrasonic waves in response to a voltage difference between the upper electrode and the lower electrode.

Abstract: The disclosure provides a fingerprint identification panel. The fingerprint identification panel includes an encapsulation layer, a light emitting element, a light sensing element and a dielectric layer. The light emitting element and the light sensing element are on a same side of the encapsulation layer, and the encapsulation layer is configured to enable light emitted from the light emitting element to be totally reflected in the encapsulation layer; the dielectric layer is between the encapsulation layer and the light sensing element and in direct contact with the encapsulation layer, and is configured to enable the light totally reflected by the encapsulation layer to be received by the light sensing element after passing through the dielectric layer, and a refractive index of the dielectric layer is smaller than that of the encapsulation layer.

Abstract: The present disclosure provides a microfluidic device, a driving method thereof and a microfluidic system. The microfluidic device includes a first substrate and a second substrate disposed opposite to each other, and a microcavity provided between the first and second substrates for accommodating droplets. The microfluidic device further includes at least one ultrasonic layer provided between the first and second substrates. The at least one ultrasonic layer includes a plurality of ultrasonic sensors configured to perform at least one of detection operation and driving operation to the droplets accommodated in the microcavity.

Abstract: A texture recognition pixel circuit includes a photosensitive sub-circuit, a potential raising sub-circuit and a driving output sub-circuit. The photosensitive sub-circuit is configured to, under control of a first voltage transmitted by a first voltage terminal and a potential of the reading node, sense an optical signal including texture information, convert the optical signal into a first detection signal, and transmit the first detection signal to a reading node. The potential raising sub-circuit is configured to, due to an action of a second voltage signal transmitted by a second voltage signal terminal, raise the potential of the reading node. The driving output sub-circuit is configured to, due to an action of the first detection signal that is raised, a third voltage signal transmitted by a third voltage signal terminal and a fourth voltage signal transmitted by a fourth voltage signal terminal, generate and output a second detection signal.

Abstract: Embodiments of the present disclosure provide an array substrate, a display device and a spatial positioning method of a display device. The display device includes a base substrate, a pixel layer arranged at a side of the base substrate, a light source structure having a same light exit direction as the pixel layer, a processing element. The light source structure emits collimation invisible light, the pixel layer includes a plurality of sub-pixels and at least one sensing pixel arranged between the sub-pixels, the at least one sensing pixel receives reflected light of the collimation invisible light emitted by the light source structure and reflected by an object to be positioned, the processing element is coupled with the sensing pixel and the light source structure, a distance from the object to the display device is calculated according to relevant data information of the collimation invisible light and the reflected light.

Abstract: The present disclosure provides an ultrasonic sensor, a display panel and a display apparatus. The ultrasonic sensor includes: a bearing substrate; an ultrasonic emission structure on the bearing substrate, wherein the ultrasonic emission structure includes a first piezoelectric film layer; and an ultrasonic receiving structure on the bearing substrate, wherein the ultrasonic receiving structure includes a second piezoelectric film layer. The piezoelectric constant of the first piezoelectric film layer is greater than the piezoelectric constant of the second piezoelectric film layer.

Abstract: A fingerprint identification sensor includes a base, and at least one light sensing unit disposed on the base. The at least one light sensing unit is configured to collect at least two different monochromatic lights of light reflected by a finger to identify a fingerprint.