Extrusion type diffusion membrane and preparation method thereof

摘要: The invention relates to a diffusion membrane used for backlight source in liquid crystal displayer, particular an extrusion type and preparation method thereof order solve the problem that existing coating is complex fabricating technology. sequentially composed of layer A, base B, C D. A D are located on outside B respectively; four-layer co-extrusion structure. high light transmittance, haze, brightness performance, shielding property balance performance has function guide plate cannot be scratched, after module, lamp shadow can effectively solved. simple technology convenient implement, production efficiency improved, cost reduced, environmental health improved.