Abstract: Various aspects of the present disclosure relate generally to ultrasonic fingerprint sensor. In some aspects, a device may include a flexible display. The device may include an ultrasonic fingerprint sensor that is configured to transmit and receive an ultrasonic signal in an acoustic path through the flexible display. The device may include an acoustics configuration layer that is situated between the display and the ultrasonic fingerprint sensor. The acoustics configuration layer may be configured to optimize a signal strength of the ultrasonic signal based at least in part on a configuration of one or more layers of the flexible display. Numerous other aspects are provided.

Abstract: A gate driver includes a plurality of stages. A stage of the stages includes a pull-up circuit which applies a high voltage to an output node which outputs a gate signal, a pull-down circuit which applies a low voltage lower than the high voltage to the output node, a gate signal control circuit which controls the pull-up circuit and the pull-down circuit, and a stabilization transistor connected to the pull-down circuit. The stabilization transistor is turned off when the gate signal has the low voltage.

Abstract: An input device includes a plurality of sensor electrodes and a processing system. The plurality of sensor electrodes includes transmitter electrodes and receiver electrodes. The processing system configured to: drive the transmitter electrodes using multiple frequencies and multiple zero-row-sum code-division-multiplexing (CDM) drive matrices, wherein respective subsets of the transmitter electrodes are driven with sensing signals at respective frequencies of the multiple frequencies, and wherein each of the zero-row-sum CDM drive matrices corresponds to a respective frequency of the multiple frequencies; obtain resulting signals via the receiver electrodes based on the transmitter electrodes being driven with the zero-row-sum CDM drive matrix; decode the resulting signals, wherein decoding the resulting signals includes performing a signal level recovery process; and determine presence, location and/or motion of one or more input objects based on the decoded resulting signals.

Abstract: A display device may include a display panel and an input sensor. Mesh lines of the input sensor may include first mesh lines extending in a first direction and second mesh lines extending in a second direction crossing the first direction. The first mesh lines and the second mesh lines may cross each other at a plurality of cross points. In a unit region of the sensing electrode, first cutting points may be defined in the first mesh lines and the second mesh lines, and second cutting points may be defined in the first mesh lines and the second mesh lines.

Abstract: A display device includes a plurality of pixels and at least one scanning-line driver circuit. The plurality of pixels each includes a light-emitting element and a pixel circuit electrically connected to the light-emitting element. The scanning-line driver circuit is electrically connected to the plurality of pixels. The pixel circuits each do not overlap the scanning-line driver circuit. A display region partly overlaps the scanning-line driver circuit. The pixel circuits are arranged in a matrix form having a plurality of rows and a plurality of columns. The pixel circuits each include a driving transistor configured to supply a current to the light-emitting element and a switching transistor configured to supply the current from the driving transistor to the light-emitting element. The switching transistor and the light-emitting element are electrically connected to each other through a relay wiring in each pixel.

Abstract: A display device includes a substrate including an emission area and a non-emission area; a thin film transistor layer positioned on the substrate; a touch buffer layer positioned on the thin film transistor layer; a connection electrode positioned on the touch buffer layer; a touch insulating layer positioned on the connection electrode; a first electrode positioned on the touch insulating layer, and overlapping the non-emission area; and a first touch sacrificial layer positioned between the touch insulating layer and the first electrode, wherein the first touch sacrificial layer does not overlap the emission area, and is positioned in an island shape while overlapping the non-emission area, and an inclination angle formed between the touch insulating layer and a side surface of the first touch sacrificial layer has an acute angle.

Abstract: A display substrate and a display device. In the display substrate, a plurality of first output ends of the plurality of straight edge gate driving structures are connected to the plurality of first signal lines through a plurality of first connection structures, and a plurality of second output ends of the plurality of rounded corner gate driving structures are connected to the plurality of second signal lines through a plurality of second connection structures; the first conductive part and the second conductive part are located in a same conductive layer, and a number and a type of the plurality of via connection structures in each of the plurality of first connection structures are the same as a number and a type of the plurality of via connection structures in each of the plurality of second connection structures.

Abstract: A light-emitting module and a display apparatus are provided. The light-emitting module includes a drive substrate including a substrate and a drive layer located at a side of the substrate, cell structures arranged in an array of m rows and n columns and located at a side of the drive layer facing away from the substrate, and drive chips. The drive layer includes thin film transistors, and the substrate is an integral structure. Both m and n are positive integers and m and n are not both 1. The cell structures each include light-emitting devices, and the cell structures are driven independently from each other. One of the cell structures corresponds to at least one of the drive chips.

Abstract: According to an embodiment, a first wearable device includes at least one sensor, a communication circuit, and a processor operably coupled to the at least one sensor and the communication circuit. The processor is configured to obtain, using the at least one sensor, first information on orientation of the first wearable device worn on a first part of a body of a user. The processor is configured to receive, from a second wearable device connected to the first wearable device and worn on a second part of the body of the user, second information on orientation of the second wearable device. Based on the first information and the second information, the processor is configured to provide a notification to guide changing at least one of a position or a direction of the second wearable device on the second part.

Abstract: A drive control circuit includes an input circuit, a first output circuit and a first output control circuit. An input circuit is configured to control the potentials of a first node and a second node under the control of a signal input terminal and a clock signal terminal. The first output circuit is configured to provide a first power supply signal to a third node under the control of a first node or to provide a second power supply signal to a first output terminal under the control of a second node. The first output control circuit is configured to turn on or turn off the third node and the first output terminal under the control of the first control terminal.

Abstract: A device, for contactless optical recording of a papillary structure of a hand or parts thereof, includes a lighting unit illuminating the hand or parts thereof with emitted structured light, and a camera detecting structured light emitted from the lighting unit, which is diffusely reflected from the hand or parts thereof in an object plane of the camera. A nonzero difference in distances between the camera along an optical axis of an optical path of the camera and the lighting unit along an optical axis of an optical path of the lighting unit from the object plane of the camera is present in order to determine a position of the hand or parts thereof along the optical axis of the optical path of the camera in relation to a range of depth of field of the camera using a structure size determined in the light detected by the camera.

Abstract: A display device includes a first pixel, a second pixel, and a third pixel. The first pixel includes a first light emitting element of a first group including a first pixel electrode disposed in a first area, a second light emitting element of the first group including a second pixel electrode electrically connected to the first pixel electrode and disposed in the first area, and a first pixel circuit electrically connected to the first light emitting element of the first group and the second light emitting element of the first group and disposed in the second area.

Abstract: Disclosed is a display device with integrated touch screen, which prevents external light from being reflected by touch electrodes without a polarizer. The display device includes an organic light emitting device layer disposed on a substrate, a plurality of color filters disposed on the organic light emitting device layer, a plurality of first touch electrodes and a plurality of second touch electrodes disposed on the plurality of color filters to overlap a boundary portion between the plurality of color filters, and a black matrix disposed on the plurality of first touch electrodes and the plurality of second touch electrodes to overlap the plurality of first touch electrodes and the plurality of second touch electrodes.

Abstract: A display device includes: a plurality of pixels; a plurality of write signal lines to which a control signal for selecting a pixel row in which a data voltage is to be written is supplied; a WS signal gate driver that supplies the control signal; a plurality of data voltage lines for writing a data voltage; a data driver that supplies the data voltage; a selector circuit that switches a data voltage line to which the data voltage is supplied; a selector control line to which a control signal for controlling the selector circuit is supplied; and a controller that supplies the control signal. The plurality of pixels include a first pixel and a second pixel belonging to a same pixel row. The WS signal gate driver supplies the control signal in a first direction. The controller supplies the control signal in a second direction opposite to the first direction.

Abstract: A method is provided to facilitate the collecting and preserving a piece of physical evidence. The method includes the steps of providing a collection card with inner and outer layers laminated to each other and removing a first portion of the inner layer to expose an adhesive on a first portion of the outer layer. The piece of physical evidence is positioned between a second portion of the inner layer and the first portion of the outer layer. Thereafter, the first portion of the outer layer is folded over the second portion of the inner layer so as to capture the piece of physical evidence therebetween.

Abstract: An electro-optic display having a plurality of pixels is driven from a first image to a second image using a first drive scheme, and then from the second image to a third image using a second drive scheme different from the first drive scheme and having at least one impulse differential gray level having an impulse potential different from the corresponding gray level in the first drive scheme. Each pixel which is in an impulse differential gray level in the second image is driven from the second image to the third image using a modified version of the second drive scheme which reduces its impulse differential The subsequent transition from the third image to a fourth image is also conducted using the modified second drive scheme but after a limited number of transitions using the modified second drive scheme, all subsequent transitions are conducted using the unmodified second drive scheme.

Abstract: A backlight processing method and device of a display screen, a storage medium, and an electronic device are provided. The method includes: controlling a luminance value of a first type backlight region to be a target luminance value determined according to an image to be displayed; controlling a luminance value of the second type backlight region to be a preset luminance value, the preset luminance value is greater than the target luminance value, and a difference between the preset luminance value and the target luminance value is greater than a preset difference value; and controlling the display panel to display the image to be displayed based on luminance of the first type backlight region and the second type backlight region.

Abstract: Provided are a pixel driving circuit (110) and a driving method, a display panel (610) and a display device (900). The pixel driving circuit (110) includes: a driving sub-circuit (111) connected to a light-emitting element (120); a data writing sub-circuit (112) configured to write a data signal from the data signal terminal (Vdata) into the driving sub-circuit (111) and apply the data signal to a leakage current compensation point (M), under control of the scanning signal terminal (Vscan); and a light-emitting control sub-circuit (113) configured to control the driving sub-circuit (111) to output a driving current related to the data signal to the light-emitting element (120) under control of the light-emitting control signal terminal (EM). In a process of emitting light by the light-emitting element (120), a voltage of a control electrode of the driving sub-circuit (113) is compensated by a voltage of the leakage current compensation point (M).

Abstract: A display device according to an exemplary embodiment of the present disclosure includes a light emitting diode and a pixel driving circuit which drives the light emitting diode, the pixel driving circuit includes a driving transistor which applies a driving current to the light emitting diode, a first transistor which applies a first reference voltage to a gate electrode of the driving transistor, a second transistor which applies a data voltage to the gate electrode of the driving transistor, a third transistor which applies a second reference voltage to a source electrode of the driving transistor, and a storage capacitor connected to the gate electrode and the source electrode of the driving transistor. According to the present disclosure, the threshold voltage Vth and the mobility of the driving transistors are internally compensated to improve an image quality.

Abstract: An electronic device may include a display and an optical sensor formed underneath the display. The display may have both a full pixel density region and a high-transmittance region that overlaps the optical sensor. To increase the transmittance of light through the high-transmittance region of the display, emissive sub-pixels in the high-transmittance region may be shorted together. Each emissive sub-pixel may be shorted to an emissive sub-pixel of the same color. The emissive sub-pixels in the high-transmittance region of the display may have the same layout but smaller sizes relative to the full pixel density region of the display. The thin-film transistor sub-pixels in the high-transmittance region may be consolidated horizontally and/or vertically to produce larger continuous high-transmittance areas.