Light-emitting substrate and manufacturing method thereof, and light-emitting apparatus

A manufacturing method of a light-emitting substrate, the light-emitting substrate having a plurality of light-emitting regions and a non-light-emitting region except the plurality of light-emitting regions, the non-light-emitting region including at least one auxiliary cathode region;

• the manufacturing method comprising:
• forming at least one coupling portion and at least one auxiliary cathode pattern on a substrate;
• wherein each auxiliary cathode region is provided with a coupling portion in the at least one coupling portion and an auxiliary cathode pattern in the at least one auxiliary cathode pattern therein;
• the coupling portion is located on a side of the auxiliary cathode pattern proximate to the substrate, and the auxiliary cathode pattern is coupled to the coupling portion;
• wherein
• the auxiliary cathode pattern includes at least one disconnection portion, and each disconnection portion includes a first conductive pattern layer, a second conductive pattern layer and a third conductive pattern layer stacked in sequence in a direction away from the substrate;
• an orthographic projection of an edge of the second conductive pattern layer on the substrate is located within an orthographic projection of an edge of the third conductive pattern layer on the substrate, and is located within an orthographic projection of an edge of the first conductive pattern layer on the substrate;
• and the orthographic projection of the edge of the second conductive pattern layer on the substrate and the orthographic projection of the edge of the third conductive pattern layer on the substrate have a first gap therebetween, and the orthographic projection of the edge of the second conductive pattern layer on the substrate and the orthographic projection of the edge of the first conductive pattern layer on the substrate have a second gap therebetween;
• a total perimeter of at least one orthographic projection, on the substrate, of at least one edge of one or more third conductive pattern layers in the at least one disconnection portion is greater than a perimeter of an orthographic projection of an edge of the auxiliary cathode region;
• and
• the at least one disconnection portion includes a first disconnection portion and a second disconnection portion arranged in sequence in a first direction;
• an edge of a third conductive pattern layer in the first disconnection portion and an edge of a third conductive pattern layer in the second disconnection portion each include a first sub-edge and a second sub-edge arranged in sequence in the first direction, and a third sub-edge and a fourth sub-edge that are connected between the first sub-edge and the second sub-edge;
• wherein
• the two first sub-edges are respectively overlapped with two sub-edges of the edge of the auxiliary cathode region arranged in the first direction, and the two second sub-edges are located between the two first sub-edges;
• and
• the first direction is an extending direction of a sub-edge of the edge of the auxiliary cathode region except the two sub-edges respectively overlapped with the two first sub-edges.