▎ 摘　　要

NOVELTY - The screen has a function layer (11), a Fresnel lens layer (12) and a reflective layer (13) laminated with each other, where a material of the function layer includes hydrophobic material. The function layer is provided with a central part (111) and an edge part (112). The edge part surrounds the central part. The hydrophobic material is distributed on the central part, where the material of the edge part comprises a graphene sheet, and component ratio of the hydrophobic material in the central part is 5 to 15 percentage. USE - Projection screen for use in a projection device i.e. ultra-short focus laser projection display device, for displaying an image projected by a projector. ADVANTAGE - The hydrophobic material does not react with the water hydrolysis reaction, and has characteristic of repelling water molecule, so that the function layer is not easy to absorb water molecule and has good moisture resistance, thus, the projection screen has better moisture resistance. The projection screen can keep good physical performance in the storage process, and can be better stored, and is prevented from being easy to warp and distortion. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a projection screen for use in a projection device. Projector (2) Dear viewers (3) Function layer (11) Fresnel lens layer (12) Reflection layer (13) Diffusion particles (14) Surface layer (15) Centre part (111) Edge part (112)