Low-reflection film, display substrate and manufacturing method therefor, and display apparatus

A manufacturing method for a display substrate, the method comprising:

• forming a base substrate, wherein the base substrate is defined to have light-emitting regions and a non-light-emitting region other than the light-emitting regions;
• forming a plurality of metal wires on a side of the base substrate, wherein the plurality of metal wires are disposed in the non-light-emitting region;
• and
• forming light-emitting units on a side of the plurality of metal wires away from the base substrate, wherein the light-emitting units are disposed in the light-emitting regions, wherein
• the method further comprises:
• after forming the light-emitting units, forming a low-reflection film on a side of the light-emitting units away from the base substrate;
• and/or before forming the light-emitting units, forming a low-reflection film on the side of the base substrate, wherein
• the low-reflection film is disposed in the non-light-emitting region;
• the low-reflection film includes a first metal layer, a first inorganic layer, a second metal layer and a second inorganic layer;
• the first inorganic layer is located on a side of the first metal layer, and a refractive index of the first inorganic layer is less than a refractive index of the first metal layer;
• the second metal layer is located on a side of the first inorganic layer away from the first metal layer, and a refractive index of the second metal layer is greater than the refractive index of the first inorganic layer;
• the second inorganic layer is located on a side of the second metal layer away from the first inorganic layer, and a refractive index of the second inorganic layer is less than the refractive index of the second metal layer.