Light emitting polymer samples in UV light, October 2002.
© Science Museum / Science & Society Picture Library
The most important raw materials used in the manufacture of lightweight screens are special plastics called light-emitting polymers, made in four key colours: red, green, blue and yellow. Scientists disolve these to turn them into liquids and coat them onto glas or plastic sheets. Then by adding metal contacts and connections, a thin, bright and lightweight display screen is made.