| abstract |
The present invention provides a method for producing a reflective film comprising a layer of polymerized mesogenic material having a spirally twisted structure, wherein the helix axis is perpendicular to the film plane, and containing a region having a variable spiral pitch, obtained by this method. The use of such reflective films as reflective films, reflective broadband or notched polarizers, or as multicolor films or multicolor images in liquid crystal displays, as color filters, as effect pigments, as decorative or security purposes, and as disclosed above and after A liquid crystal display comprising a reflective polarizer and a liquid crystal film and optionally further comprising one or more correction layers or polarizers. |