Abstract: A backlight module includes a light guide plate having a bottom surface, a light exit surface, and a light incident surface a substrate located on a side of the bottom surface away from the light exit surface; first light-emitting devices located on a side of the substrate proximate to the bottom surface second light-emitting devices disposed opposite to the light incident surface; and a prism sheet located on a side of the light guide plate away from the substrate. The first light-emitting devices are configured to emit first light, so that the first light passes through the light guide plate and the prism sheet to become light of a first viewing angle. The prism sheet is configured to cooperate with the light guide plate to modulate second light emitted by the second light-emitting devices into light of a second viewing angle which is smaller than the first viewing angle.

Abstract: A detection method includes acquiring a first shot image of a long-side weld of a battery cell under detection by using a first structured light camera on a long side of the battery cell under detection, acquiring a second shot image of a short-side weld of the battery cell under detection by using a second structured light camera on the short side of the battery cell under detection, detecting a defect of the long-side weld of the battery cell under detection based on the first shot image, and detecting a defect of the short-side weld of the battery cell under detection based on the second shot image.

Abstract: A backlight module, and a display device and a driving method thereof, which relate to the technical field of displaying. The backlight module includes a substrate, and a plurality of light sources and a plurality of reflector cups arranged at one side of the substrate; each reflector cup includes a lower port, an upper port, a cup body connected between the lower port and the upper port, and a plurality of micro structures arranged on an inner wall surface of the cup body; the plurality of light sources are separately located at the lower ports of the different reflector cups; and light-emitting surfaces of the light sources face the upper ports; the micro structures have a plurality of reflecting surfaces: the reflecting surfaces are configured for reflecting light emitted by the light sources.

Abstract: The embodiments of the present disclosure provide a lens, a lens array, a displaying module and a displaying device. The lens includes a main lens body and a light emitting member; the main lens body is a conical housing having an inner cavity, and the light emitting member is disposed at a first end of the main lens body; a first quadric surface is disposed in the inner cavity of the main lens body; a second quadric surface is disposed on an inner wall of the main lens body; the first quadric surface is convex toward the first end of the main lens body, and the second quadric surface is convex toward a second end of the main lens body.

Abstract: Disclosed is a backlight assembly, including first and second light guide plates, and first and second light sources; light emitted by the first light source can be emitted from a surface of the first light guide plate facing the second light guide plate at a first set emitting angle, after being incident into the first light guide plate and reflected by a plurality of first microstructures disposed on a surface of the first light guide plate facing away from the second light guide plate; light emitted by the second light source can be emitted from a surface of the second light guide plate facing away from the first light guide plate at a second set emitting angle, after being incident into the second light guide plate and reflected by a plurality of second microstructures disposed on a surface of the second light guide plate facing the first light guide plate.

Abstract: Provided are a robot control method and apparatus, and a storage medium. The robot control method includes: detecting whether a first scene image captured by a camera of a robot includes a foot; obtaining, in response to detecting the foot in multiple consecutive frames of first scene images, multiple frames of second scene images captured by the camera; and recognizing a foot posture based on the multiple frames of second scene images, and controlling the robot based on a control manner corresponding to the recognized foot posture. In a scene image captured by the camera mounted at the robot, when the foot is captured within a field of view, the foot posture is recognized using a video captured by the camera. Intelligent control of the robot is realized based on the recognized foot posture.

Abstract: The present invention relates to the field of hand trolleys, and specifically, to a bottom support structure of a hand trolley and the hand trolley. The bottom support structure includes a bottom frame and ground wheels. The bottom frame includes one central joint, at least three groups of connection assemblies, and at least three corner joints, one end of each connection assembly is hingedly connected to the central joint, the other end of the connection assembly is hingedly connected to one corner joint, and the corner joint is connected to the ground wheel, so that a foldable structure that is selectively unfolded or folded of the bottom frame is formed. One of the connection assemblies includes a first connection piece and a second connection piece, and when the bottom frame is unfolded, the first connection piece is located on the second connection piece, so that a double-layer structure of the bottom frame is formed.

Abstract: A backlight module, including: a surface light source; a first light guide plate laminated with the surface light source in a thickness direction, wherein the first light guide plate is on a light-exiting side of the surface light source, and a side of the first light guide plate proximal to the surface light source comprises a plurality of first networks; and a first light source on a side surface of the first light guide plate, in which an orthographic projection of the first light source onto a plane, where a light-exiting surface of the surface light source is located, does not overlap with that of the first light guide plate onto the plane.

Abstract: Provided is a method for manufacturing a light-mixing plate. The method includes disposing a plurality of shielding structures on a transparent substrate; forming a light-shielding film layer on the transparent substrate where the plurality of shielding structures are disposed, wherein a hole is formed at a position, corresponding to each of the plurality of shielding structures, of the light-shielding film layer; and removing the plurality of shielding structures.

Abstract: Provided in the present disclosure are a backlight module and a display device. The backlight module includes: a first light guide plate, including: a first surface, a second surface, and a first side surface, where the second surface includes a plurality of first mesh points arranged in arrays; at least one first light source, adjacent to the first side surface; a first reverse prism, located on a side of the first surface away from the second surface; a first privacy filter, located on a side of the first reverse prism away from the first light guide plate; a second light guide plate, located on a side of the first privacy filter away from the first reverse prism, and including: a third surface and a fourth surface that are opposite, and a second side surface connecting the third surface and the fourth surface.

Abstract: The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.

Abstract: Provided in the present disclosure are a backlight module and a display device. The backlight module includes: a first light guide plate, including: a first surface, a second surface, and a first side surface, where the second surface includes a plurality of first mesh points arranged in arrays; at least one first light source, adjacent to the first side surface; a first reverse prism, located on a side of the first surface away from the second surface; a first privacy filter, located on a side of the first reverse prism away from the first light guide plate; a second light guide plate, located on a side of the first privacy filter away from the first reverse prism, and including: a third surface and a fourth surface that are opposite, and a second side surface connecting the third surface and the fourth surface.

Abstract: Disclosed is a backlight assembly, including first and second light guide plates, and first and second light sources; light emitted by the first light source can be emitted from a surface of the first light guide plate facing the second light guide plate at a first set emitting angle, after being incident into the first light guide plate and reflected by a plurality of first microstructures disposed on a surface of the first light guide plate facing away from the second light guide plate; light emitted by the second light source can be emitted from a surface of the second light guide plate facing away from the first light guide plate at a second set emitting angle, after being incident into the second light guide plate and reflected by a plurality of second microstructures disposed on a surface of the second light guide plate facing the first light guide plate.

Abstract: Provided is a method for manufacturing a light-mixing plate. The method includes disposing a plurality of shielding structures on a transparent substrate; forming a light-shielding film layer on the transparent substrate where the plurality of shielding structures are disposed, wherein a hole is formed at a position, corresponding to each of the plurality of shielding structures, of the light-shielding film layer; and removing the plurality of shielding structures.

Abstract: Provided is a display module, including: a back panel including a bottom board and a side frame disposed on the bottom board; a display assembly at least partially located in an accommodation space enclosed by the side frame and the bottom board; a cover board located on a side of the display assembly away from the bottom board and supported by the side frame; and a bonding layer bonding the cover board to the side frame. The side frame is detachably coupled to the bottom board.

Abstract: A detection method includes acquiring a first shot image of a long-side weld of a battery cell under detection by using a first structured light camera on a long side of the battery cell under detection, acquiring a second shot image of a short-side weld of the battery cell under detection by using a second structured light camera on the short side of the battery cell under detection, detecting a defect of the long-side weld of the battery cell under detection based on the first shot image, and detecting a defect of the short-side weld of the battery cell under detection based on the second shot image.

Abstract: An electronic device includes an enclosure and a keyboard positioned within the enclosure. The keyboard includes a substrate and a key mechanism. The key mechanism includes a keycap support mechanism, a keycap supported by the keycap support mechanism and movable relative to the substrate, a ferromagnetic component attached to the keycap support mechanism, and a selectively magnetizable magnet. The selectively magnetizable magnet system may include a magnetizable material and a coil configured to selectively magnetize and demagnetize the magnetizable material. The key mechanism may include a collapsible dome biasing the keycap toward the extended position.