A color cathode ray tube has a coating film formed over an outer surface of a face plate. The coating film prevents a charge-up phenomenon of the face plate and also has a function for improving a contrast performance of the color cathode ray tube. The coating film is composed of a polymer of silicon...http://www.google.de/patents/US5200667?utm_source=gb-gplus-sharePatent US5200667 - Color cathode-ray-tube with electrical and optical coating film
