Backlight module, preparation method thereof and display module

Abstract

The embodiment of the invention provides a backlight module, a preparation method thereof and a display module. The backlight module comprises a light-emitting substrate and a diffusion layer. The light-emitting substrate comprises a substrate body and a plurality of light-emitting elements arranged on the substrate body. The diffusion layer is located on the light-emitting side surface of the light-emitting substrate and comprises a first adhesive material layer and a plurality of diffusion particles distributed in the first adhesive material layer in a doped mode, and the refractive index of the diffusion particles is larger than that of the first adhesive material layer. According to the technical scheme, the diffusion particles can be doped and distributed in the first adhesive material layer to replace a diffusion film material, the number of optical film materials is reduced, and the cost of the backlight module is reduced.

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