Electroluminescent device with improved light output
First Claim
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1. An electroluminescent device comprising:
- a substrate,a colloidal layer, anda laminated body composed of a first electrode, an electroluminescent layer and a second electrode, whereinthe colloidal layer has a varying refractive index.
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Abstract
The invention relates to an electroluminescent device comprising a substrate (1) and a laminated body composed of a first electrode (3), an electroluminescent layer (4) and a second electrode (5). The light output out of the electroluminescent device is increased by arranging a colloidal layer (2) between the substrate (1) and the laminated body. By using pigments in the colloidal layer (2), the emmission color of the electroluminescent device can be changed and the daylight contrast improved.
9 Citations
3 Claims
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1. An electroluminescent device comprising:
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a substrate, a colloidal layer, and a laminated body composed of a first electrode, an electroluminescent layer and a second electrode, wherein the colloidal layer has a varying refractive index. - View Dependent Claims (2, 3)
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Specification
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Current AssigneeNXP B.V. (NXP Semiconductors NV)
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Original AssigneeKoninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
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InventorsBusselt, Wolfgang, Opitz, Joachim, Bertram, Dietrich, Klein, Markus Heinrich, Gläser, Harald, Bechtel, Hans Helmut
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Primary Examiner(s)Patel; Ashok
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Application NumberUS10/518,842Publication NumberTime in Patent Office1,532 DaysField of Search313/501, 313/506, 428/917, 428/690, 315/169.3, 345/45, 345/46, 345/76US Class Current313/506CPC Class CodesH10K 2102/3026 Top emissionH10K 50/85 Arrangements for extracting...H10K 50/86 Arrangements for improving ...H10K 59/8791 Arrangements for improving ...Y10S 428/917 Electroluminescent
