9 Visual display Screens, namely screens for use in mobile telephones, screens for use in portable computers, screens for providing back lighting, screens for use in flat panel displays, screens for use in televisions, and screens comprising glass coated with an electroluminescent material, screens comprising glass coated with a photoluminescent material, screens comprising tin oxide coated with an electroluminescent material, screens comprising tin oxide coated with a photoluminescent material, all for use in mobile telephones, portable computers, flat panel displays, video monitors and televisions