Abstract: A display substrate and a manufacture method thereof, and a display apparatus are provided. The base substrate includes a base substrate, the base substrate is provided with a plurality of pixels in an array, one pixel includes a plurality of sub-pixels, each sub-pixel includes a light-emitting device and a pixel circuit driving the light-emitting device to emit light, and the pixel circuit includes a storage capacitor, a driving transistor and a data writing transistor; the first electrode of the driving transistor receives a first power voltage; the second electrode of the driving transistor is connected to the light-emitting device; at least part of the plurality of sub-pixels includes a first via hole, and the first electrode of the data writing transistor is electrically connected to the gate electrode of the driving transistor and the active layer of the data writing transistor through the first via hole.

Abstract: Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.

Abstract: Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.