METHOD FOR PREPARING INTELLIGENT DISPLAY FILM HAVING SWITCHABLE VIEWING ANGLE AND COMPOSITE FILM CONTAINING DISPLAY FILM

摘要

A method for preparing an intelligent display film having switchable viewing angles and a composite film containing said display film. The preparation method comprises the following steps: mixing liquid crystal and a photopolymerizable monomer according to certain percentage contents, selecting a ratio of raw materials according to the refractive index matching performance of a conductive film and a polymer-dispersed liquid crystal layer as well as material component characteristics, wherein the percentage content of the liquid crystal is 30-60%, the percentage content of the photopolymerizable monomer is 38-70%, the percentage content of a photoinitiator is 0.1-3.5%, the percentage content of a spacer is 0.1-5%; stirring the liquid crystal, the photopolymerizable monomer, the photoinitiator and the spacer evenly at room temperature, and pressing the mixed material between two indium tin-coated conductive films by using a rolling process as to form a thin layer, and illuminating the same for 5-10 minutes by using ultraviolet light, so as to prepare and obtain the intelligent display film having switchable viewing angles. The film may be switched between a wide viewing angle state and a narrow viewing angle state under an externally-applied electric field, and may be applied to the fields of optical displays such as computers, smart phones, and ATM displays.