A thin film transistor liquid crystal device with color capabilities can be fabricated using polychromatic glass. Polychromatic glass is a full-color photosensitive glass in which colored regions can be established through exposure to ultraviolet radiation either concurrently with or followed by heat...http://www.google.de/patents/US4743099?utm_source=gb-gplus-sharePatent US4743099 - Method of making a TFT LC display having polychromatic glass color filters
