| abstract |
A method of passivating organic devices (12) positioned on a supporting transparent plastic substrate (11) including the steps of overcoating the plastic substrate with a multi-layer overcoating (16), composed of alternating layers of a transparent polymer film (17) and a transparent dielectric material (18), forming an organic device (12) on the overcoated transparent plastic substrate (11) and sealing the organic device (12) formed on the overcoated plastic substrate (11). The polymer film layer (17) used in overcoating the plastic substrate acts as a means of improving the barrier properties of the multi-layer overcoating (16) and the dielectric material (18) acts as a physical barrier to atmospheric elements which can corrode the organic device (12) and are a detriment to the reliability of organic LEDs. |