Display substrate and manufacturing method therefor, display panel and display device

A display substrate, comprising:

• a base substrate;
• and
• an organic layer disposed at a side of the base substrate and comprising a planarization layer and a plurality of support structures, wherein the planarization layer comprises a plurality of vias, the plurality of support structures are disposed on a side of the planarization layer away from the base substrate and integrated with the planarization layer, and orthographic projections of the plurality of support structures on the base substrate do not overlap with orthographic projections of the plurality of vias on the base substrate;
• wherein the support structure is configured to support a spacer;
• the organic layer further comprises a plurality of platform structures disposed on the side of the planarization layer away from the base substrate and integrated with the planarization layer, and the plurality of vias extend along a direction from the base substrate to the organic layer to pass through the platform structures;
• the platform structure is disposed around the via;
• the plurality of support structures and the plurality of platform structures protrude relative to other regions of the planarization layer;
• a thickness of the platform structure protruding from the planarization layer is substantially same as a thickness of the support structure protruding from the planarization layer in the direction from the base substrate to the organic layer;
• a sum of the thickness of the platform structure protruding from the planarization layer and a thickness of the planarization layer is greater than a thickness of a region of the planarization layer where neither the platform structure nor the support structure is provided, and a sum of the thickness of the support structure protruding from the planarization layer and the thickness of the planarization layer is greater than the thickness of the region of the planarization layer where neither the platform structure nor the support structure is provided;
• a minimum distance between an outer surface of the platform structure away from the via and the via is greater than or equal to 5 μm;
• the plurality of platform structures comprise a plurality of first platform structures;
• a part of the plurality of first platform structures is integrated with the plurality of support structures.