Electroluminescent device with improved light output

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

Reexamination Certificate

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C313S506000, C428S917000

Reexamination Certificate

active

07495386

ABSTRACT:
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.

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By R.J. Visser; Entitled: “Application of Polymer Light-Emitting Materials in Light-Emitting Diodes, Backlights and Displays”; Philips Journal of Research Laboratories, Eindhoven, The Netherlands, vol. 51 No. 4, 1998, pp. 467-477.

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