Abstract: Disclosed are systems, devices and methods for providing fingerprint sensors based on ultrasound imaging techniques in electronic devices and fabrication techniques for producing ultrasound-based fingerprint sensors. In some aspects, an ultrasound fingerprint sensor device includes an intermediate layer coupled to a base chip including an integrated circuit having conducive contacts at a surface of the base chip, the intermediate layer including an insulation layer formed on the base chip and a corresponding array of channeling electrode structures coupled to the conductive contacts and passing through the insulation layer, in which the channeling electrodes terminate at or above a top surface of the insulation layer to provide bottom electrodes; a plurality of ultrasonic transducer elements including an acoustic transducer material coupled to the bottom electrodes; and a plurality of top electrodes positioned on the ultrasonic transducer elements.

Abstract: An image sensor includes a controller and a plurality of pixel clusters. Each of the pixel clusters includes a plurality of pixels coupled to a reset transistor, a floating diffusion node, a source follower, and a select transistor. Each pixel of a pixel cluster includes a photodiode, and a transfer transistor having a first terminal coupled to the photodiode, a second terminal coupled to the floating diffusion node, and a gate. The controller is configured to apply a transfer control signal to the gate of the transfer transistor in response to a pixel operation, the transfer control signal being one of a positive voltage level, a negative voltage level, and a ground voltage level.

Abstract: The present application discloses a vibrating motor, which includes a housing having a receiving cavity, a stator received in the receiving cavity, a vibrator received in the receiving cavity, and a flexible assembly received in the receiving cavity. The flexible assembly is configured for elastically supporting the vibrator. The housing includes a top wall, a bottom wall facing the top wall, and a side wall connecting the top wall and the bottom wall. The stator includes an iron core, a coil sleeved on the iron core, and pole shoes positioned at two ends of the iron core. Each the pole shoe has a surface close to the iron core recessed to form an avoiding portion, and the iron core is inserted in the avoiding portion.

Abstract: An electronic device, a touch detection circuit and an update method for a reference value of a touch screen are provided. The update method includes: acquiring a temperature value of an environment of the touch screen; when determining that the acquired temperature value is less than a preset temperature threshold and determining that a continuously touched area exists in the touch screen, collecting N data frames of the continuously touched area; calculating N feature values of the N data frames; and updating N reference values corresponding to the N data frames according to the N feature values; wherein, N is greater than 1 and N is an integer. A difference between a reference value and a sensed value of the continuously touched area may not be decreased with a temperature rise due to the heat transferred by a touched object, thus point elimination at a low temperature is avoided.

Abstract: An ultrasound scanning apparatus comprises an ultrasound scanning unit, an ultrasound controller for controlling the operation of the ultrasound scanning unit, detecting the operation state of the ultrasound scanning unit, generating a first enable signal when detecting that the operation state of the ultrasound scanning unit is transferred from an operating state to a non-operating state and generating a second enable signal when detecting that the operation state of the ultrasound scanning unit is transferred from the non-operating state to the operating state, and an enable output end for transmitting the first enable signal or the second enable signal to the breathing machine to control the running of the breathing machine.

Abstract: A card use system includes a first client configured to send a card use request including card information of a card, and display a payment code including a first resource account number corresponding to the first client; a second client configured to send a payment request to transfer a first quantity of resources from the first resource account number to a second resource account number corresponding to the second client; a card server configured to validate the card according to the card information; and in response to successfully validating the card, send a confirmation indication to the payment server; and a payment server configured to, in response to receiving the confirmation indication from the card server, transfer a second quantity of resources in the first resource account number corresponding to the first client to the second resource account number corresponding to the second client.

Abstract: The invention provides a matrix material for the gas diffusion layer of the polymer electrolyte membrane fuel cell, which is composed of three-dimensional porous and strip-shaped hexagonal chambers connected to each other, wherein the six-sided ribs are composed of two metal layers, the inside is metal nickel, and the outside is tungsten-nickel alloy. The total mass of metal per square meter of the material is: 1500˜3000 grams, the mass content of metal nickel in the material is 88˜92%, the mass content of metal tungsten is 8˜12%, and the rest are impurities; the thickness of the matrix material is 0.1˜0.2 mm, specific surface area is (1˜2)×105 m2/m3; longitudinal air permeability ?2000 m/mm/(cm2hmmAq), longitudinal thermal conductivity ?1.7W/(m·k), transverse thermal conductivity ?21W/(m·K). The porous nickel-tungsten metal material of the invention, as the matrix material of the gas diffusion layer, has the advantages of lower electrical resistance and higher strength compared with carbon paper.

Abstract: A method for manufacturing an antenna printed circuit board includes the following steps: providing a flexible-rigid printed circuit board comprising a flexible region and a rigid region. The flexible region comprises at least one first connecting pad and at least one second connecting pad arranged opposite sides of the rigid region. At least one antenna module is attached to the first connecting pad through a conductive paste. The antenna module is fixed on the rigid region by a first reflow soldering process. At least one radio frequency integrated circuit structure is attached to the second connecting pad through a conductive paste. The radio frequency integrated circuit is fixed on the rigid region by a second reflow soldering process. A gap between the antenna module and the rigid region and a gap between the radio frequency integrated circuit structure and the rigid region are filled with dielectric materials and cured.

Abstract: The present disclosure provides a liquid crystal display panel and a display device. The liquid crystal display panel comprises a display region and a non-display region disposed around the display region, and the display region comprises a center region and edge regions located at four corners of the center region. Pixels in the liquid crystal display panel comprise a main-pixel region and a sub-pixel region, wherein the pixels comprise first pixels intersecting a boundary line between the edge regions and the non-display region, and at least two first pixels are symmetrical about a horizontal centerline. Brightness of an upper portion and a lower portion of the horizontal center line are same in the present disclosure.

Abstract: This application discloses methods and apparatus for rendering a virtual channel in a multi-world virtual scene. The method includes generating a virtual scene for displaying a virtual channel, a first world, and a second world, the virtual channel being used for a render camera to move between the first and second worlds; and receiving a control request for triggering the render camera to move in the virtual scene; and identifying a location of the render camera in response to the control request to obtain a movement trajectory of the render camera during movement in the virtual scene. The method further includes detecting a world state according to the movement trajectory; determining whether the world state is an intermediate state; in response to determining the world state is the intermediate state, generating a room for accommodating the render camera; and displaying in the virtual scene the room.