Electroluminescent device with light extractor

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...

Reexamination Certificate

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Details

C257S099000, C257S095000, C372S045013, C372S099000, C372S102000

Reexamination Certificate

active

06987288

ABSTRACT:
The invention concerns an electroluminescent device comprising first and second substantially parallel mirrors for converting electron-hole pairs into photons, and means for generating electrons and holes. The converting means and the first and second mirrors are designed to ensure the confinement between the first and second mirrors of photons having at least a selected wavelength, associated with a guided propagation mode. Additionally, the device comprises light extracting means which communicate with part at least of the converting means and the generating means, comprised between the first and second mirrors, and are designed to extract therefrom part at least of the photons in guided mode, so that they reach outside.

REFERENCES:
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patent: 6683898 (2004-01-01), Østergaard et al.
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Delbeke et al., “Electrically pumped crystal micro-cavity light emitting diode”,1999 Digest of the Leos Summer Topical Meetings, pp. 11171-72.
Gourley et al., “Opitcal Properties of Two-Dimensional Photonic Lattices Fabricated as Honeycomp Nanostructures in Compound Semiconductors”,Applied Physics Letters, American Institute of Physics, vol. 64, No. 6, Feb. 7, 1994, pp. 687-689.
Boroditsky et al., “Light extraction from optically pumped light-emitting diode by thin-slab photonic crystals”,Applied Physics Letters, vol. 75, No. 8, Aug. 23, 1999, pp. 1036-1038.
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