Display substrate, display apparatus, and method of fabricating display substrate

A method of fabricating a display substrate having a display area and a peripheral area, comprising, in the peripheral area:

• forming a first insulating layer on a flexible base substrate;
• forming a first signal line layer on a side of the first insulating layer away from the flexible base substrate, the first signal line layer formed to comprise a plurality of first signal lines;
• forming a plurality of first vias extending through a respective one of the plurality of first signal lines, exposing a first surface of the first insulating layer;
• forming a second insulating layer on a side of the first signal line layer away from the flexible base substrate, the second insulating layer formed to extend through the plurality of first vias to be in direct contact with the first surface of the first insulating layer forming a second signal line layer on a side of the second insulating layer away from the first insulating layer, the second signal line layer formed to comprise a plurality of second signal lines;
• forming a plurality of second vias extending through a respective one of the plurality of second signal lines, exposing a second surface of the second insulating layer;
• and
• forming a third insulating layer on a side of the second signal line layer away from the flexible base substrate, the third insulating layer formed to extend through the plurality of second vias to be in direct contact with the second surface of the second insulating layer.