Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-06-14
2005-06-14
Garrett, Dawn (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C313S112000, C313S113000, C257S098000
Reexamination Certificate
active
06905788
ABSTRACT:
A stabilized OLED device for emitting light of a specific color includes a metallic anode and a metallic cathode spaced from the metallic anode. The device also includes a light-emitting layer including a host and a dopant, the dopant selected to produce light having a spectrum including light of the specific color, and a stabilizer provided in one of the device layers which improves the useful lifetime of the OLED device, wherein the stabilizer has an emission spectrum different from that of the light-emitting layer. One of the electrode layers is semitransparent and the other one is substantially opaque and reflective such that the stabilized OLED device forms a microcavity that emits a narrow band light with the specific color.
REFERENCES:
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patent: 5126214 (1992-06-01), Tokailin et al.
patent: 6692846 (2004-02-01), Hatwar et al.
patent: 2003/0068524 (2003-04-01), Hatwar
Takada et al., “Control of emission characteristics in organic thin-film electroluminescent diodes using an optical-microcavity structure”, Appl. Phys. Lett. 63 (15), Oct. 11, 1993, p. 2032-2034.
Dirr et al., “Luminescence enhancement in microcavity organi multilayer structures”, Synthetic Metals, 91 (1997), pp. 53-56.
Tang et al. in Applied Physics Letters vol. 51, No. 12, p. 913-915, (1987).
Journal of Applied Physics, vol. 65, No. 9, p. 3610-3616, (1989).
Farruggia Giuseppe
Hatwar Tukaram K.
Shore Joel D.
Tyan Yuan-Sheng
Eastman Kodak Company
Garrett Dawn
Owens Raymond L.
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