Organic electroluminescent devices with a doped co-host emitter
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United States of America Patent
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Issued Date -
Dec 9, 2004
app pub date -
Nov 24, 2003
filing date -
Jun 3, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An organic electroluminescent (EL) device comprising a pair of electrodes and at least one luminescent layer interposed between the pair of electrodes. The luminescent layer comprises a condensed polycyclic aromatic compound, an organic metal chelate and a luminescent dye. The device according to the invention exhibits excellent resistance to current-induced quenching effect, so its luminance efficiency will not decrease as the input current density increases. The device also can emit light with high efficiency and high color saturation in red. The organic EL device is advantageously used in an organic EL display.
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