Abstract: A display panel including: a first substrate and a second substrate disposed oppositely and a liquid crystal layer disposed between the first substrate and the second substrate; a material of the liquid crystal layer includes a cholesteric liquid crystal; the display panel further includes: a microstructure optical film layer located on a side of the second substrate facing away from the first substrate; incident light is incident from a side of the microstructure optical film layer, reflected by the cholesteric liquid crystal, and then emerged from the microstructure optical film layer; the microstructure optical film layer includes multiple wedge structures; at least part of the wedge structures have different angles and sizes, so that light emerged from side view angles with different emergent angles are adjusted to a center view angle.

Abstract: A method for micro-ridge mixed-sowing cultivation of dryland crops includes the following steps: S1: cleaning ditches and draining away water in dryland; S2: harvesting the preceding crop, leaving the stubble, smashing the stalks of the preceding crop, and then spreading the smashed stalks on the stubble; S3: trenching the dryland to form ecological trenches; S4: flattening the standing stubble and the smashed stalks on the seedbed surface to form an underlying surface, molding seed-fertilizer-soil compounds into a ridge shape and allowing the seed-fertilizer-soil compounds to fall on the underlying surface to form ecological ridges, wherein a plurality of ecological ridges are formed between adjacent ecological trenches, an ecological depression is formed between adjacent ecological ridges, and after sowing, an irrigation is carried out, including: draining water shortly after the irrigation, without leaving a water layer in the field.

Abstract: A method for extracting web page content in a terminal device, where a system service in a framework of an operating system drives a web page display component execution environment to complete a control layout and control rendering on a user interface of an application program, where a web page display component is identified from a view control included in the user interface, and then instructions for content extraction and instructions for information feedback are inserted, through an interface of the identified web page display component, into a web page embedded in the user interface of the application program. The instructions for content extraction extract content at a specified location on the web page based on a custom web event, and the instructions for information feedback transfer the extracted web page content to the operating system.

Abstract: A photolithography system utilizes tin droplets to generate extreme ultraviolet radiation for photolithography. The photolithography system irradiates the droplets with a laser. The droplets become a plasma and emit extreme ultraviolet radiation. The photolithography system senses contamination of a collector mirror by the tin droplets and adjusts the flow of a buffer fluid to reduce the contamination.

Abstract: A light source is provided capable of maintaining the temperature of a collector surface at or below a predetermined temperature. The light source in accordance with various embodiments of the present disclosure includes a processor, a droplet generator for generating a droplet to create extreme ultraviolet light, a collector for reflecting the extreme ultraviolet light into an intermediate focus point, a light generator for generating pre-pulse light and main pulse light, and a thermal image capture device for capturing a thermal image from a reflective surface of the collector.

Abstract: Embodiments of this specification provide account registration processing methods and apparatuses. The account registration processing method includes following: A contact method of a target user submitted by a first terminal is received, and an information collection page is returned to the first terminal; an invitation list is generated based on registration information entered based on the information collection page and submitted by the first terminal, and an invitation link generated based on the invitation list is sent to a second terminal based on the contact method; a display configuration parameter of the target user is determined based on the registration information after the invitation link is triggered; and account registration is performed based on the registration information and a registration result is sent to the first terminal if a registration confirmation instruction submitted after the second terminal displays information based on the display configuration parameter is received.

Abstract: The present disclosure describes a method of fabricating a semiconductor structure that includes forming a dummy gate structure over a substrate, forming a first spacer on a sidewall of the dummy gate structure and a second spacer on the first spacer, forming a source/drain structure on the substrate, removing the second spacer, forming a dielectric structure over the source/drain structure, replacing the dummy gate structure with a metal gate structure and a capping structure on the metal gate structure, and forming an opening in the dielectric structure. The opening exposes the source/drain structure. The method further includes forming a dummy spacer on a sidewall of the opening, forming a contact structure in the opening, and removing the dummy spacer to form an air gap between the contact structure and the metal gate structure. The contact structure is in contact with the source/drain structure in the opening.

Abstract: The present disclosure relates to the field of information identification. Disclosed are a method and terminal for identifying a barcode. The method comprises: obtaining an image of a barcode, and according to the calibration information of a preset calibration region, identifying the position of the calibration region in the image; identifying the position of an information code region in the image according to the position of the calibration region in the image, and a preset position relationship between the calibration region and the information code region in the image; and acquiring information on the position of the information code region in the image to obtain the information of the information code region.

Abstract: A light source is provided capable of maintaining the temperature of a collector surface at or below a predetermined temperature. The light source in accordance with various embodiments of the present disclosure includes a processor, a droplet generator for generating a droplet to create extreme ultraviolet light, a collector for reflecting the extreme ultraviolet light into an intermediate focus point, a light generator for generating pre-pulse light and main pulse light, and a thermal image capture device for capturing a thermal image from a reflective surface of the collector.

Abstract: A multi-level direct current converter includes a direct current conversion unit, a switching unit, a voltage management unit, and a controller. The direct current conversion unit includes a flying capacitor, a first power transistor, and a second power transistor. A first end of the first power transistor is connected to a voltage input end of the multi-level direct current converter, a second end of the first power transistor is connected to a first end of the second power transistor by using the flying capacitor, and a second end of the second power transistor is connected to a reference ground.

Abstract: An expandable sintered neodymium-iron-boron magnet, a preparation method, and an application are provided. The magnet has a sintered neodymium-iron-boron magnet and an expandable coating coated on the surface of the sintered neodymium-iron-boron magnet. The sintered neodymium-iron-boron magnet coated with the expandable coating is used to replace a conventional assembly method of an epoxy resin adhesive coating magnet and potting resin glue, so that the magnet coated with the expandable coating may be inserted into a magnetic steel groove. The irreversible expansion of the coating itself is used to fix the magnet in the magnetic steel groove. Meanwhile, the use of the expandable coating shortens the assembly time of motors and improves the assembly accuracy of the motors.

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes a first substrate, a second substrate, a third substrate, a first liquid crystal layer, and a second liquid crystal layer; wherein the first substrate includes: a first base, and a first pixel electrode and a transparent electrode, wherein the first pixel electrode is insulated from the transparent electrode, and the first pixel electrode is closer to the second substrate than the transparent electrode is; wherein the first substrate, the first liquid crystal layer and the second substrate are configured to form a display portion of the liquid crystal handwriting board; and the first substrate, the second liquid crystal layer and the third substrate are configured to form a writing portion of the liquid crystal handwriting board.

Abstract: The invention discloses a display substrate, a display panel and a display device.

Abstract: The present disclosure describes a method of fabricating a semiconductor structure that includes forming a dummy gate structure over a substrate, forming a first spacer on a sidewall of the dummy gate structure and a second spacer on the first spacer, forming a source/drain structure on the substrate, removing the second spacer, forming a dielectric structure over the source/drain structure, replacing the dummy gate structure with a metal gate structure and a capping structure on the metal gate structure, and forming an opening in the dielectric structure. The opening exposes the source/drain structure. The method further includes forming a dummy spacer on a sidewall of the opening, forming a contact structure in the opening, and removing the dummy spacer to form an air gap between the contact structure and the metal gate structure. The contact structure is in contact with the source/drain structure in the opening.

Abstract: A display panel includes a liquid crystal cell, a first polarizing assembly and a second polarizing assembly. The liquid crystal cell includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate. The first polarizing assembly is disposed on a side of the first substrate further away from the liquid crystal layer and includes at least a first polarizing layer having a first transmission axis, and the first polarizing assembly is configured for generating polarized light whose polarization direction is parallel to the first transmission axis. The second polarizing assembly is located on a side of the second substrate further away from the liquid crystal layer and includes at least a transflective layer and a light absorbing layer.

Abstract: An impact power tool includes a motor, an output shaft to which a tool bit is attachable for performing work on a workpiece, and an impact mechanism disposed between the motor and the output shaft for converting a continuous torque output from the motor to discrete pulses of torque upon the output shaft, the impact mechanism including a cylinder assembly, a cavity defined within the cylinder assembly containing a hydraulic fluid, and a collapsible member having a first end and a second end opposite the first end. The collapsible member is maintained in a shape coinciding with that of the cavity by fitment within the cavity, with the first and second ends being disconnected from each other. The collapsible member is collapsible to compensate for thermal expansion of the hydraulic fluid during operation of the impact mechanism.

Abstract: Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes: a liquid crystal panel, a photosensitive assembly, and a control assembly; wherein the liquid crystal panel includes a first substrate and a second substrate that are opposite; the photosensitive assembly includes a plurality of photosensitive elements; and the control assembly is electrically connected to the liquid crystal panel and the photosensitive assembly, and is configured to determine position information of a pixel region for erasure by detecting position information of target light irradiated to the liquid crystal panel by the photosensitive assembly and supply a pixel voltage to the plurality of pixel electrodes in the pixel region for erasure, such that a voltage difference is present between the plurality of pixel electrodes in the pixel region for erasure and the common electrode.

Abstract: A card rendering method includes that an electronic device sends a request for obtaining related information of a target card to a server, and receives related information that is of a target card and that is sent by the server. The electronic device renders the target card based on a first layout snapshot, displays the target card on a display screen, parses a first file package set of the target card to obtain a second rendering instruction set, selects a rendering instruction in the second rendering instruction set other than a first rendering instruction set, renders again the target card according to the selected rendering instruction, and updates the target card displayed on the display screen.

Abstract: A rotary power tool includes a main housing and a transmission housing coupled to the main housing. The transmission housing includes a bearing pocket open to a front of the transmission housing and defined at least partially by a radially inward-extending flange. The rotary power tool also includes an output shaft and a bearing positioned within the bearing pocket adjacent and in abutting relationship with the radially inward-extending flange for rotatably supporting the output shaft in the transmission housing. The rotary power tool also includes a radially outward-extending flange on the output shaft that radially overlaps at least a portion of the bearing on an opposite side of the bearing as the radially inward-extending flange. A line of action of an axial reaction force applied to the output shaft is directed to the transmission housing via the radially outwardly-extending flange, the bearing, and the radially inward-extending flange.

Abstract: The present disclosure provides a heat dissipation device of an energy storage system and a heat dissipation method for an energy storage system, wherein the heat dissipation device comprises: a housing, wherein at least one frame is provided in the housing, the energy storage system is placed in the at least one frame, a curved-surface guide plate is provided on the top of the at least one frame, at least one air conditioner is hung outside the housing, a cold air outlet of each air conditioner is connected to the curved-surface guide plate; a guide cavity is formed between a concave surface of the curved-surface guide plate and the at least one frame, a spreader plate is provided in the guide cavity, and the spreader plate is configured to adjust a flow direction of gas in the guide cavity.