Koninklijke Philips Corporation N.v.

Harald Gläser

Markus Heinrich Klein

Wolfgang Busselt

Joachim F Opitz

Dietrich Bertram

Hans Helmut Bechtel

An electroluminescent device includes a substrate and a laminated body composed of a first electrode, an electroluminescent layer and a second electrode. The light output out of the electroluminescent device is increased by arranging a colloidal layer between the substrate and the laminated body. By using pigments in the colloidal layer, the emission color of the electroluminescent device can be changed and the daylight contrast improved.

Electroluminescent device with improved light output

The invention relates to an electroluminescent device comprising a substrate () and a laminated body composed of a first electrode (), an electroluminescent layer () and a second electrode (). The light output out of the electroluminescent device is increased by arranging a colloidal layer () between the substrate () and the laminated body. By using pigments in the colloidal layer (), the emmission color of the electroluminescent device can be changed and the daylight contrast improved.

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Freiburg, Germany

Harald Gläser