Optical films having structured surfaces are used, inter alia, for managing the propagation of light within a display. As displays become larger, it becomes more important that the film be reinforced so as to maintain rigidity. An optical film of the invention has a first layer comprising inorganic fibers...http://www.google.com/patents/US20070237938?utm_source=gb-gplus-sharePatent US20070237938 - Reinforced Optical Films
