Abstract: An array substrate and an OLED display panel are provided. The array substrate includes a base substrate, a first film layer set and a second film layer set. A bending area of the array substrate has a first trench throughout the first film layer set and a second trench throughout the second film layer set. The first film layer set close to the second film layer set has a blocking part having an etching opening corresponding to the first trench. The etching opening is throughout the blocking part. A bottom of the etching opening connects to a top of the first trench. A bottom of the second trench connects to a top of the blocking part.

Abstract: An intelligent optimized power monitoring shutoff device includes a power conversion module, first current detection module, second current detection module, switch module, measure control module, and bypass module coupled with each other. The power conversion module enables one of the power generation devices to supply power to each module. The first and second current detection modules detect the power generation current value of the power generation device and the overall current value of the power generation system. The measure control module compares the two current values, and switches the switch module to the open-circuit status when the power generation current value is smaller than the overall current value, such that current of the power generation system flows through the bypass module. An intelligent optimized power monitoring shutoff system is provided for monitoring the operation status and maintaining the maximum power generation efficiency.

Abstract: The present disclosure provides a method, an Internet of Things system, and a medium for seat management of a smart gas call center. The method includes: obtaining gas usage data, the gas usage data including at least a historical gas usage rate; generating, based on the gas usage data, a predicted call feature of a smart gas call center within a target time period; generating, based on the predicted call feature, a preferred seat feature of the smart gas call center within the target time period; and transmitting the preferred seat feature to a terminal of the smart gas call center.

Abstract: Three-dimensional (3D) memory devices and methods for forming the 3D memory devices are provided. In one example, a 3D memory device includes a substrate and a memory stack including interleaved conductive layers and dielectric layers on the substrate. The memory stack includes a core structure and a staircase structure. The staircase structure is on one side of the memory stack. The 3D memory device also includes a dummy channel structure extending vertically through the staircase structure. The dummy channel structure includes a plurality of sections along a vertical side of the dummy channel structure. The plurality of sections respectively interface with the interleaved conductive layers in the staircase structure. At least one of the plurality of sections includes a non-flat surface at an interface between the at least one of the plurality of sections and a corresponding conductive layer.

Abstract: A device for visible puncture includes a balloon, a canula, a needle tube, an image acquisition device, and a fluid injection tube. The balloon includes a first end including a first hole, and a second end including a second hole. The canula includes a first axial through hole. The needle tube includes a second axial through hole and is disposed in the first axial through hole. The image acquisition device is disposed in the second axial through hole. The balloon is axially disposed on the canula. The first end of the balloon is disposed on the outer wall of the front end of the needle tube, and the second end of the balloon is disposed on the outer wall of the front end of the canula. The second axial through hole includes a fluid channel disposed between the outer wall of the needle tube and the canula.

Abstract: A method for preparing quartz glass with low content of hydroxyl and high purity, includes providing silica powders including hydroxyl groups. The silica powders are dehydroxylated, which includes drying the silica powders at a first temperature, heating the silica powders up to a second temperature and introducing a first oxidizing gas including halogen gas, thereby obtaining first dehydroxylated powders, and heating the first dehydroxylated powders up to a third temperature and introducing a second oxidizing gas including oxygen or ozone, thereby obtaining second dehydroxylated powders. The second dehydroxylated powders are heated up to a fourth temperature to obtain a vitrified body. The vitrified body is cooled to obtain the quartz glass with low content of hydroxyl and high purity. The quartz glass prepared by the above method has low content of hydroxyl and high purity. A quartz glass with low content of hydroxyl and high purity is also provided.

Abstract: An electric driveline for an electric vehicle, comprising: a battery unit, a motor unit and a motor control unit which are fixed to a vehicle chassis. A drive axle unit supporting the vehicle chassis. The motor unit placed in a cradle member, and directly coupled to the drive axle unit by means of a coupling member. The electric driveline allowing for a transmission to be eliminated from vehicles, thereby simplifying the production process of the vehicles and reducing manufacturing costs of the vehicles.

Abstract: A method for switching a base station, a mower and a multi-base station working system are provided. The method includes: obtaining, when the number of first common-view satellites between the mower and a first base station is less than a first threshold, the number of second common-view satellites between the mower and a second base station; when the number of the first common-view satellites is less than a second threshold and the number of the second common-view satellites is greater than the second threshold, obtaining the first trajectory of the mower based on the first base station and the second trajectory of the mower based on the second base station; determining, based on the first and second trajectories, a coordinate transformation matrix; and switching from the first base station to the second base station based on the coordinate transformation matrix, the second threshold being less than the first threshold.

Abstract: The present disclosure relates to an insulation unit based on an array substrate and a manufacturing method thereof, an array substrate and a manufacturing method thereof, and a display mechanism. The method for manufacturing the insulation unit based on the array substrate includes: providing an aluminum layer on a substrate; and anodizing the aluminum layer to oxidize the aluminum layer to form the insulation unit. The method for manufacturing the insulation unit based on the array substrate can manufacture an insulation unit with a better corrosion resistance.

Abstract: An electronic device includes a first part and a second part that can be folded or expanded relative to each other. The electronic device has a closed state and an open state When the electronic device is in the closed state, a frame of the first part and a frame of the second part partially or totally overlap. The first part includes a first feeding antenna. The second part includes a first parasitic antenna, and when the electronic device is in the closed state, the first parasitic antenna is not grounded and can be coupled to the first feeding antenna.

Abstract: Systems and methods for performing optical distance measurement are provided. In one aspect, a system for measuring a distance to an object comprises a light emitter configured to emit an outbound light pulse, and a light sensor configured to receive a returning light pulse reflected from the object and output an analog pulse signal representing the returning light pulse. The system also comprises a field-programmable gate array (FPGA) coupled to the light sensor. The FPGA is configured to convert the analog pulse signal to a plurality of digital signal values, and generate a plurality of time measurements corresponding to the plurality of digital signal values. The system also comprises a controller configured to calculate the distance to the object based on the plurality of digital signal values and the plurality of time measurements.

Abstract: A structure for performing analysis includes a first opening formed on a back side of a substrate and passing through the substrate, a second opening connected with a bottom of the first opening and penetrating into a first dielectric layer formed on a front side of the substrate, a first conductive layer formed on a sidewall of the second opening and a contact element in the first dielectric layer, and a second conductive layer formed on a second dielectric layer. The first conductive layer contacts the second conductive layer electrically.

Abstract: A method is provided. The method includes: creating at least two projected-screen receiving sources according to a local IP address and at least two idle port numbers, and generating respective stream pushing addresses of the at least two projected-screen receiving sources, so that at least two screen projecting terminals obtain the respective stream pushing addresses in a one-to-one correspondence; establishing, for each of the at least two projected-screen receiving sources, a screen-projection connection between the projected-screen receiving source and a screen projecting terminal obtaining a stream pushing address of the projected-screen receiving source; and receiving, by each of the at least two projected-screen receiving sources, projected-screen data pushed by the corresponding screen projecting terminals in screen-projection connection with the projected-screen receiving source.

Abstract: An electric drive power transmission system box assembly is provided having stepped pin positioning and a mounting method of the electric drive power transmission system box assembly. The box assembly includes a housing shaft string assembly, stepped pins, a first housing, and a first bearing. The housing shaft string assembly includes a housing and a shaft string supported on the housing. Each stepped pin includes a matching section and a guide section, the diameter of the matching section is greater than the diameter of the guide section, a tail end portion of the matching section is fixed in a fixing pin hole of the housing, the first housing is mounted and fixed to the housing shaft string assembly under the guide of the guide section, and a rear end of the shaft string is supported on the first housing by means of the first bearing.

Abstract: The present disclosure provides a display substrate and a display device. The display substrate includes a display region and a frame region surrounding the display region. The display region includes a first region and a second region, and the quantity of sub-pixels connected to each gate line in the first region is less than the quantity of sub-pixels connected to each gate line in the second region. The display substrate includes a signal line arranged in the frame region, an orthogonal projection of each gate line in the first region onto a base substrate of the display substrate partially overlaps an orthogonal projection of the signal line onto the base substrate, and a capacitor is formed between the signal line and the gate line in the first region to increase a load capacitance of the gate line in the first region.