Display substrate having pixel definition layer comprises a lyophilic and lyophobic materials

A display apparatus, comprising:

• a display substrate,
• wherein the display substrate comprises a driving substrate, a first electrode, an auxiliary electrode, a pixel definition layer and a hole injection layer,
• the driving substrate comprises a driving circuit and a dielectric layer covering the driving circuit;
• the first electrode and the auxiliary electrode are on a side of the dielectric layer of the driving substrate away from the driving circuit;
• the auxiliary electrode at least partially surrounds the first electrode;
• the pixel definition layer is on a side of the first electrode and the auxiliary electrode away from the driving substrate;
• the pixel definition layer comprises a pixel opening, and the first electrode is at least partially exposed through the pixel opening and is electrically connected to the driving circuit;
• and
• the hole injection layer is in the pixel opening and stacked with the first electrode;
• the pixel definition layer comprises a lyophilic material layer on a side of the first electrode and the auxiliary electrode facing away from the driving substrate, and a lyophobic material layer on a side of the lyophilic material layer facing away from the driving substrate.