Passivated organic device having alternating layers of polymer and dielectric
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United States of America Patent
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May 26, 1998
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app pub date -
Jun 30, 1997
filing date -
Nov 30, 1995
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Abstract
A method of passivating organic devices positioned on a supporting transparent plastic substrate including the steps of overcoating the plastic substrate with a multi-layer overcoating, composed of alternating layers of a transparent polymer film and a transparent dielectric material, forming an organic device on the overcoated transparent plastic substrate and sealing the organic device formed on the overcoated plastic substrate. The polymer film layer used in overcoating the plastic substrate acts as a means of improving the barrier properties of the multi-layer overcoating and the dielectric material acts as a physical barrier to atmospheric elements which can corrode the organic device and are a detriment to the reliability of organic LEDs.
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