Abstract: The present disclosure provides a display substrate including: a base substrate, and a thin film transistor, an oxygen supplementing functional layer and an oxygen containing layer formed on the base substrate. The thin film transistor includes: an active layer in direct contact with the oxygen containing layer, and the active layer includes an oxide semiconductor material. The oxygen supplementing functional layer includes a metal oxide material and serves as a first electrode of the display substrate. The oxygen containing layer is between the oxygen supplementing functional layer and the base substrate.

Abstract: A hollow fiber ultrafiltration membrane filter is provided. The hollow fiber ultrafiltration membrane filter includes a main membrane body, wherein outer cylinders are sleeved at an upper end and a lower end of the main membrane body, and a hollow fiber is arranged in the main membrane body. The hollow fiber ultrafiltration membrane filter has the advantages of beautiful appearance, convenient fabrication and assembly, high flux, good sealing performance, and small space occupation, thus being particularly applicable to industrial water purification.