A method of generating full color in a liquid crystal display using birefringent filters

Color generation in a typical liquid crystal device (LCD) is usually done v ia an array of absorptive color filers placed over the LC subpixels. These filters offer at best 33%, transmission resulting in dark displays and the need for high intensity backlights. In this paper we clearly explain a new method of color generation based on a polarization interference filter (PIF ) scheme called the Sole filter. The design offers high throughput and chro maticity due to its non-absorptive nature. The design is based on work done by ColorLink Inc. and is extended to show possible use in a display device .