| abstract |
(57) As described in the claims, a region of a variable helical pitch consisting of a layer of a helical twist oriented polymeric mesogenic material, the helical axis of which is perpendicular to the film. A method for producing a reflective film comprising, a reflective film obtained by such a process as a broadband reflective polarizer or a notch polarizer, or as a multi-colored film or image in a liquid crystal display, a color filter, a coloring material, decoration or The use of such a reflective film for security applications, and consisting of a liquid crystal cell, a reflective polarizer as described above and below, and in some cases, It further relates to a liquid crystal display comprising one or more compensators or polarizers. |