Diffusion film and preparation method and application thereof

The invention relates to the technical field of optical thin films, in particular to a diffusion film and a preparation method and application thereof, and provides a diffusion film which comprises a base material and a diffusion film body arranged on any surface of the base material, and the diffusion film body is prepared from, by mass, 0.5%-10% of diffusion particles and 90%-99.5% of solvent. The obtained diffusion film has the characteristics of high haze, high definition and high light transmittance; the provided formula is simple, the use of other components is reduced, the cost is low, dispersion of diffusion particles is facilitated, an ideal light diffusion effect can be achieved, and wide application is facilitated. 本申请涉及光学薄膜技术领域，尤其涉及一种扩散膜及其制备方法与应用，提供了一种扩散膜，该扩散膜包括基材以及设置在所述基材任一表面的扩散薄膜，其中，所述扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子0.5％～10％，溶剂90～99.5％。得到的扩散膜具有高雾度，高清晰度，高透光率的特性；提供的配方简单，减少了其他组分的使用，成本低，有利于扩散粒子的分散，能够达到理想的光扩散效果，有利于广泛使用。