Display substrate including an auxiliary cathode structure and display apparatus having the same

A display apparatus, comprising a display substrate, wherein the display substrate comprises:

• a base substrate and an auxiliary cathode structure located on a side of the base substrate;
• the auxiliary cathode structure comprises a first conductive layer, an intermediate support layer located on a side of the first conductive layer away from the base substrate, and a second conductive layer located on a side of the intermediate support layer away from the first conductive layer;
• wherein,
• a side of the intermediate support layer close to the first conductive layer comprises any one or more of at least one first protrusion and at least one first groove, and a side of the first conductive layer close to the intermediate support layer comprises any one or more of at least one second groove engaged with the at least one first protrusion and at least one second protrusion engaged with the at least one first groove which are correspondingly disposed;
• and/or,
• a side of the intermediate support layer away from the first conductive layer comprises any one or more of at least one third protrusion and at least one third groove, and a side of the second conductive layer close to the intermediate support layer comprises any one or more of at least one fourth groove engaged with the at least one third protrusion and at least one fourth protrusion engaged with the at least one third groove which are correspondingly disposed;
• wherein an area of an orthographic projection of the first conductive layer on the base substrate is larger than an area of an orthographic projection of the second conductive layer on the base substrate, and the area of the orthographic projection of the second conductive layer on the base substrate is larger than an area of an orthographic projection of the intermediate support layer on the base substrate.