Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-02-24
2009-10-13
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000
Reexamination Certificate
active
07602118
ABSTRACT:
An organic light-emitting diode (OLED) device, comprising: a substrate; an OLED comprising first and second electrodes and one or more layers of organic light-emitting material formed between the electrodes, wherein at least one electrode comprises a transparent electrode, the transparent electrode and layer(s) of organic light-emitting material having a first refractive index range; and an encapsulating cover; wherein at least one of the substrate or cover comprises a transparent substrate or cover having a second refractive index and through which light from the OLED is emitted; and further comprising a light scattering layer located between the substrate and cover, and a transparent low-index element having a third refractive index lower than each of the first refractive index range and second refractive index and located between the scattering layer and the transparent substrate or cover.
REFERENCES:
patent: 4476292 (1984-10-01), Ham et al.
patent: 4769292 (1988-09-01), Tang et al.
patent: 5247190 (1993-09-01), Friend et al.
patent: 5834893 (1998-11-01), Bulovic et al.
patent: 5955837 (1999-09-01), Horikx et al.
patent: 6091195 (2000-07-01), Forrest et al.
patent: 6144429 (2000-11-01), Nakai et al.
patent: 6472804 (2002-10-01), Mueller et al.
patent: 6777871 (2004-08-01), Duggal et al.
patent: 6787796 (2004-09-01), Do et al.
patent: 7109652 (2006-09-01), Tsai et al.
patent: 2001/0026124 (2001-10-01), Liu et al.
patent: 2002/0011783 (2002-01-01), Hosokawa
patent: 2002/0061418 (2002-05-01), Imanishi
patent: 2003/0071569 (2003-04-01), Chung et al.
patent: 2003/0146453 (2003-08-01), Beck et al.
patent: 2003/0203551 (2003-10-01), Cok et al.
patent: 2003/0209972 (2003-11-01), Holmes et al.
patent: 2004/0031977 (2004-02-01), Brown et al.
patent: 2004/0061136 (2004-04-01), Tyan et al.
patent: 2004/0119400 (2004-06-01), Takahashi et al.
patent: 2004/0217702 (2004-11-01), Garner et al.
patent: 2005/0018431 (2005-01-01), Shiang
patent: 2005/0142379 (2005-06-01), Juni et al.
patent: 1 100 129 (2001-05-01), None
patent: 1 406 474 (2004-04-01), None
patent: 02/37568 (2002-05-01), None
patent: 02/67580 (2002-05-01), None
patent: 02080626 (2002-10-01), None
patent: WO 03/001490 (2003-01-01), None
“Light Scattering and Other Optical Methods,” Langley, et al., in Methods of the Physics of Porous Media, edited Po-zen Wong, Academic Press, 1999, 263-297.
Negative refraction index article: http://physicsworld.com/cws/article/print/17398.
C. W. Tang et al; “Organic Electroluminescent Diodes”; Applied Physics Letters; vol. 51; No. 12; Sep. 21, 1987; pp. 913-915.
C. W. Tang et al; “Electroluminescence Of Doped Organic Thin Films”; Journal of Applied Physics; vol. 65; No. 9; May 1, 1989; pp. 3610-3616.
A. N. Safonov et al; “Modification Of Polymer Light Emission By Lateral Microstructure”; Synthetic Metals; 116; 2001; pp.145-148.
John M. Lupton et al; “Bragg Scattering From Periodically Microstructured Light Emitting Diodes”; Applied Physics Letters; vol. 77; No. 21; Nov. 20, 2000; pp. 3340-3342.
Tetsuo Tsutsui et al; “Sharply Directed Emission In Organic Electroluminescent Diodes With An Optical-Microcavity Structure”; Applied Physics Letters; vol. 65; No. 15; Oct. 10, 1994; pp. 1868-1870 .
Cok Ronald S.
Preuss Donald R.
Tyan Yuan-Sheng
Anderson Andrew J.
Eastman Kodak Company
Hines Anne M
Owens Raymond L.
Patel Nimeshkumar D.
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