A manufacturing method for square meter of large duennfilm - electronics dies on glass for flue sig crystal - flat screens by vacuum vapor deposition of a white piece by means of small perforated metal foils masks

摘要

Active matrix addressed liquid crystal TV sets configurated in the way described by A.G. Fischer in US-Pat. 3,840,695 can be enlarged to monolithic square-meter-sized wall TV panels. The large-area thin-film-electronic matrix circuit needed to address the superimposed liquid crystal layer can be vacuum-deposited from a multiple source evaporator onto one coherent glass pane through a number of exchanged small reticulated perforated sheet metal masks which are held successively against a chosen reticle of the large glass pane, in exact registration with each other and neighbouring reticles. The large glass pane must be precision-shifted in X-Y-reticle-steps for repeated vacuum depositions, in exact registration. The novel machinery required is described.