Aromatic compounds and organic light emitting diodes

Details Aromatic compounds and organic light emitting diodes Aromatic compounds and organic light emitting diodes

2005-03-01

2005-03-01

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000

Reexamination Certificate

active

06861163

ABSTRACT:
A blue organic light emitting diode (LED) comprises a cathode formed on a substrate, a light emitting layer formed on said cathode, and an anode formed on said light emitting layer, which is characterized in that said light emitting layer comprises a compound of the following formulas I or II:wherein Ar1and Ar2independently are substituted or unsubstituted isochrysenylin-line-formulae description="In-line Formulae" end="lead"?Ar1—Ar2  Iin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Ar1—Ar3—Ar2  IIin-line-formulae description="In-line Formulae" end="tail"?(triphenylenyl), anthracenyl, naphthalyl, biphenyl, pyrenyl, or phenanthrenyl; Ar3is substituted or unsubstituted phenylene, biphenylene, naphthylene, anthracenylene, or fluorenylene.

REFERENCES:
patent: 5621131 (1997-04-01), Kreuder et al.
patent: 6582837 (2003-06-01), Toguchi et al.
patent: 20020177009 (2002-11-01), Suzuki et al.

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