Exemplary embodiments of the present disclosure provide methods of manufacturing driving substrates, including: obtaining a first thickness value of the first dielectric layer based on a difference between loads of all first storage capacitors of a specially-shaped display driving area and loads of all second storage capacitors of a normal display driving area; providing a substrate and depositing a first metal layer on a surface of the substrate; controlling a film forming process parameter by using a film thickness control model, and depositing the first dielectric layer and the second dielectric layer on a surface of the first metal layer, so that a thickness of the first dielectric layer reaches a first thickness value and a thickness of the second dielectric layer reaches a second thickness value larger than the first thickness value. A driving substrate and a display apparatus are also disclosed.