Optical waveguide display substrate, manufacturing method thereof, and display apparatus

An optical waveguide display substrate, comprising a side light source, an alternating-electric-field electrode structure, and a light scattering layer, wherein the side light source is provided at at least one side of the light scattering layer, the light scattering layer is configured to be switchable between a transparent state and a light scattering state under influence of an alternating electric field applied by the alternating-electric-field electrode structure, so that incident light from the side light source is scattered out of the optical waveguide display substrate to form a display image, and the light scattering layer comprises a polymer network and a light scattering liquid crystal material;

• wherein the polymer network is formed of polymeric monomers having liquid crystal phase;
• and
• wherein a mass proportion of the polymer network and the light scattering liquid crystal material is within a range of (1-10):
• (99-90),
• wherein the polymeric monomers are bi-acrylate monomers, and the light scattering liquid crystal material is a ferroelectric liquid crystal material of SCE-9, a phase transition sequence of which is Iso(114° C.)N*-(91° C.) SA- (59° C.) Sc*.