Light emitting diode with improved efficiency

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

Reexamination Certificate

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Details

C313S498000, C313S512000, C427S066000, C257S040000, C257S089000, C257S099000, C362S800000

Reexamination Certificate

active

06967437

ABSTRACT:
An LED, and in particular an LED employing emissive semi-conductors such as conjugated polymeric materials, consists of a pair of electrodes, one or more intermediate semi-conductor layers arranged therebetween and optionally one or more futher layers, and incorporates a microstructured feature adapted to manipulate spontaneous emission or propagation of light. The invention also consists of a method for the production of such an LED and the use of such a LED as an light emitting display.

REFERENCES:
patent: 3739217 (1973-06-01), Bergh et al.
patent: 4080245 (1978-03-01), Yamanaka et al.
patent: 4856014 (1989-08-01), Figueroa et al.
patent: 5405710 (1995-04-01), Dodabalapur et al.
patent: 5804919 (1998-09-01), Jacobsen et al.
patent: 6060826 (2000-05-01), Ueda et al.
patent: 6133692 (2000-10-01), Xu et al.
patent: 6140764 (2000-10-01), Xu et al.
patent: 6278237 (2001-08-01), Campos
patent: 6362566 (2002-03-01), Xu et al.
patent: 6441551 (2002-08-01), Abe et al.
patent: 6476550 (2002-11-01), Oda
patent: 6504180 (2003-01-01), Heremans et al.
patent: 11-283751 (1999-10-01), None
patent: 98/25313 (1998-06-01), None
patent: 98/25314 (1998-06-01), None
M.G. Salt et al., “Photonic band gaps in guided modes of textured metallic microcavities”, Optics Communications, Vo. 166 (1-6), 22, Feb. 1999, pp. 151-162, (Abstract Only).
B. J. Matterson et al., “Effect of Lateral Microstructure on Conjugated Polymer Luminescence”, International Conference On Science and Technology of Synthetic Metals, Montpellier, France, Jul. 12-18, 1998, vol. 101, No. 1-3, pp. 250-251, XP-000931170.
Shanhui Fan et al., “high Extraction Efficiency of Spontaneous Emission from Slabs of Photonic Crystals”, Physical Review Letters, Apr. 28, 1997, vol. 79, No. 17, pp. 3294-3297, XP-000931171.
R. Windisch et al., “Light-emitting diodes with 31% external quantum efficiency by outcoupling of lateral waveguide modes”, Applied Physics Letters, Apr. 19, 1999, vol. 74, No. 16, pp. 2256-2258, XP002145910.
D.G. Lidzey et al., “Control of photoluminescence emission from a conjugated polymer using an optimised microcavity structure”, Chemical Physics Letters 263, Dec. 20, 1996, pp. 655-660.
M.G. Salt et al., “Photonic band gaps in guided modes of textured metallic microcavities”, Optics Communications, Vo. 166 (1-6), Feb. 22, 1999, pp. 151-162, (Abstract Only).
M. D. McGehee et al., “Semiconducting polymer distributed feedback lasers”, Applied Physics Letters, Mar. 30, 1998, vol. 72, No. 13, pp. 1536-1538.
A. Kock et al., “Strongly directional emission from AlGaAs/GaAs light-emitting diodes”, Appl. Phys. Lett., vol. 57 (22), Nov. 26, 1990, pp. 2327-2329.
T. Yamasaki et al., “Spontaneous emission from fluorescent molecules embedded in photonic crystals consisting of polystyrene microsphere”, Appl. Phys. Lett., vol. 72, No. 16, Apr. 20, 1998, pp. 1957-1959.

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