Abstract: Provided is a display backplate including an array substrate and a plurality of pairs of connection structures on the array substrate, wherein the array substrate includes a plurality of thin-film transistors and a common electrode signal line, wherein at least one of the plurality of thin-film transistors is connected to one of a pair of connection structures and the common electrode signal line is connected to the other of the pair of connection structures; and an area of a first section of the connection structure is negatively correlated with a distance between the first section and a surface of the array substrate, and the first section is parallel to the surface of the array substrate.

Abstract: A rotary weeding device is disclosed and includes: a cylindrical shell; a motor and a transmission connected to the motor, both of which are provided within the shell; a shaft driven by the transmission; and a composite cutter arranged at a distal end of the shaft; the motor may be driven by a DC battery or AC to drive the transmission, and thus rotating the composite cutter through the shaft; a proximal end of the shell is provided with a connecting rod connected to a control handle, with power lines of the DC battery passing through the connecting rod; and the control handle is provided with a speed tuning switch and a charging socket. The weeding device is advantageous over the existing weeding device for the manner of rotary drilling-cut and breaking of both leaves and roots of individual weeds. The nearby grassland may not be damaged during the weeding operation because the composite cutter is small.

Abstract: A rotary weeding device is disclosed and includes: a cylindrical shell; a motor and a transmission connected to the motor, both of which are provided within the shell; a shaft driven by the transmission; and a composite cutter arranged at a distal end of the shaft; the motor may be driven by a DC battery or AC to drive the transmission, and thus rotating the composite cutter through the shaft; a proximal end of the shell is provided with a connecting rod connected to a control handle, with power lines of the DC battery passing through the connecting rod; and the control handle is provided with a speed tuning switch and a charging socket. The weeding device is advantageous over the existing weeding device for the manner of rotary drilling-cut and breaking of both leaves and roots of individual weeds. The nearby grassland may not be damaged during the weeding operation because the composite cutter is small.