White and colored organic electroluminescent devices using single emitting material by novel color change technique
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United States of America Patent
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Feb 18, 2003
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N/A
app pub date -
Sep 14, 2001
filing date -
Jun 8, 1999
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Abstract
An organic electroluminescent device such as a light-emitting diode is disclosed, in which the emission layer comprises a single emitting material at different aggregate state to obtain constant chromaticity white emission. Correspondingly, a novel configuration has been developed to get white emission and color change in the organic EL devices.
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