Organic light-emitting diode (oled) substrate and display device

An organic light-emitting diode (OLED) substrate, comprising a base substrate, a plurality of light-emitting sub-pixels disposed on the base substrate, and a pixel partition wall disposed on the base substrate and configured to separate the light-emitting sub-pixels, wherein

• each of the light-emitting sub-pixel includes an anode, a hole injection layer (HIL), a hole transport layer (HTL) and an organic light-emitting layer which are stacked on the substrate in sequence;
• the pixel partition wall includes lyophilic film layers and lyophobic film layers which are alternately stacked;
• a lyophilic film layer is disposed on the bottommost layer of the pixel partition wall;
• a lyophobic film layer is disposed on the upmost layer of the pixel partition wall;
• at least one layer among an HIL, an HTL and an organic light-emitting layers for at least two light-emitting sub-pixel has a different thickness;
• and upper surfaces of the HIL, the HTL and the organic light-emitting layer of any light-emitting sub-pixel are each parallel and level to an upper surface of one respective lyophilic film layer of the pixel partition wall.