Patent ID: 6806642
Filing Date: 2004-10-19
Classification: G02F

Abstract:
An electroluminescent lamp producing a substantially white light, said lamp comprising:a transparent substrate and a transparent front electrode overlying said substrate; a phosphor layer overlying said front electrode, said phosphor layer producing light having a maximum emission at a wavelength shorter than 550 nm.; a dielectric layer overlying said phosphor layer; and a conductive layer overlying said dielectric layer; a first cascading dye in said substrate, said first cascading dye absorbing blue light and emitting green light; a second cascading dye in said substrate, said second cascading dye absorbing light and emitting red light; and at least one layer of brightness enhancing film overlying said substrate for redirecting light at least to said second layer for enhancing emission of red light without increasing the amount of dye necessary to produce the same proportion of red light without the brightness enhancing film; whereby said lamp produces light having substantially equal amounts of red, green and blue light.