Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-07-12
2005-07-12
Yamnitzky, Marie (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C546S004000
Reexamination Certificate
active
06916554
ABSTRACT:
An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprises an emissive material having the structure:M may be a metal having an atomic weight greater than 40. R3may be a substituent having a Hammett value less than about −0.17, between about −0.15 and 0.05, or greater than about 0.07. R5may be H or any substituent. A may be a 5 or 6 member heteroaryl ring system. “m” may be at least 1. “n” may be at least zero. (X-Y) may be an ancillary ligand. The emissive material itself is also provided. The emissive material may have improved stability, and may provide a saturated blue emission.
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Djurovich Peter I.
Knowles David B.
Kwong Raymond
Ma Bin
Thompson Mark E.
Kenyon & Kenyon
The University of Southern California
Universal Display Corporation
Yamnitzky Marie
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