Display substrate and preparation method therefor, and display device

Abstract

A display substrate and a preparation method therefor, and a display device. The display substrate comprises: a base substrate (101); first electrodes disposed on the base substrate (101); a pixel defining layer (40) disposed on the side of the first electrodes away from the base substrate (101), wherein the pixel defining layer (40) defines pixel openings (100), and each pixel opening (100) exposes at least part of one first electrode; isolation columns (50) disposed on the side of the pixel defining layer (40) away from the base substrate (101); a light-emitting functional layer which is at least partially located in the pixel openings (100) and disposed on the side of the first electrodes away from the base substrate (101), wherein the light-emitting functional layer comprises at least one charge production layer (31), and the charge production layer (31) is separated from the isolation columns (50) at the pixel defining layer (40); and second electrodes disposed on the side of the light-emitting functional layer away from the base substrate (101) and connected to the isolation columns (50).

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