Patent ID: 6406803
Filing Date: 2002-06-18
Classification: H05B,Y10S,Y10T

Abstract:
An electroluminescent device comprising:a) a transparent substrate, b) a transparent conductive layer placed on the back surface of said transparent substrate, c) a luminescent layer comprising luminescent particles and a matrix resin and being placed on the back surface of said transparent conductive layer, and d) a rear electrode placed on the back surface of said luminescent layer, wherein said luminescent layer comprises:(c-1) a transparent support layer comprising a matrix resin and being placed on the side of said transparent conductive layer, (c-2) an insulating layer comprising an insulating material and being placed on the side of said rear electrode, wherein the insulating material includes insulating particles and a polymer having a high dielectric constant, and (c-3) a luminescent particle layer consisting essentially of particles which comprise luminescent particles and are embedded in both said support layer and said insulating layer.