Polarizing Fabric Screen for Liquid Crystal Display System.

Using a polarizing fiber of poly(vinyl alcohol) and a nonpolarizing fiber of 6-nylon as a weft and a warp, respectively, a polarizing fabric was woven in a satin fashion. After calendering the fabric and coating with a transparent resin, aluminum vapor was deposited on the rear surface to produce a reflective layer. The outer surface of the aluminum layer was pasted with a poly(vinyl chloride) sheet to complete the polarizing fabric screen, which filtered nonpolarized illuminant light to facilitate visualization of dim images from a liquid crystal projector. When the polarizing fiber array was oriented vertically, the light forming the image was diffused trapezoidally in a horizontal plane to increase the viewing angle and the light recurrence of the projected image giving a clear picture with no hotspot even in a relatively bright room.