Low-haze holographic polymer dispersed liquid crystal composition, grating device and preparation method

The invention discloses a low-haze holographic polymer dispersed liquid crystal composition, a grating device and a preparation method, and the low-haze holographic polymer dispersed liquid crystal composition comprises the following components in parts by mass: 0.5-2.0 parts of a photoinitiator, 2-6 parts of a co-initiator, 10-15 parts of a first monomer, 10-15 parts of a second monomer, 10-20 parts of a third monomer, 15-25 parts of high delta n nematic liquid crystal and 5-10 parts of a solvent, wherein the first monomer is a monofunctional acrylic acid monomer, the second monomer is a bifunctional acrylic acid monomer, the third monomer is a polyfunctional acrylic acid monomer, and the high delta n nematic liquid crystal is selected from one or more of BL038, GXP-6003, BL087 and TL213. The haze of a grating device prepared from the composition is greatly reduced on the premise that the diffraction efficiency is kept at the existing level, and the composition is particularly suitable for preparing holograp