초록 ▼

The present invention is an environmental barrier for an OLED. The environmental barrier has a foundation and a cover. Both the foundation and the cover have a top of three layers of (a) a first polymer layer, (b) a ceramic layer, and (c) a second polymer layer. The foundation and/or the cover may h

The present invention is an environmental barrier for an OLED. The environmental barrier has a foundation and a cover. Both the foundation and the cover have a top of three layers of (a) a first polymer layer, (b) a ceramic layer, and (c) a second polymer layer. The foundation and/or the cover may have a at least one set of intermediate barrier each having (a) an intermediate polymer layer with (b) an intermediate ceramic layer thereon. In a preferred embodiment, the foundation has a substrate upon which at least a top is deposited. An OLED is constructed upon the top, opposite the substrate. The cover of at least a top then placed over the OLED. The placement may be by gluing or preferably by vacuum deposition. For use as a display, it is preferred that either the ceramic layer(s) in the foundation, cover or both is substantially transparent to the light emitted by the OLED. Each layer of the foundation and the cover is preferably vacuum deposited. Vacuum deposition includes monolayer spreading under vacuum, plasma deposition, flash evaporation and combinations thereof. It is further preferred that all layers are deposited and cured between rolls or rollers to avoid the defects that may be caused by abrasion over a roll or roller.

대표청구항 ▼

1. A method of making a flexible environmental barrier for an organic light emitting device, comprising the steps of:(a) assembling a foundation by (i) providing a substrate; (ii) vacuum depositing a top by vacuum depositing a first polymer layer on the substrate, followed by vacuum depositing a fir

1. A method of making a flexible environmental barrier for an organic light emitting device, comprising the steps of:(a) assembling a foundation by (i) providing a substrate; (ii) vacuum depositing a top by vacuum depositing a first polymer layer on the substrate, followed by vacuum depositing a first ceramic layer on the first polymer layer, then vacuum depositing a second polymer layer on the first ceramic layer; (b) constructing said organic light emitting device on the second polymer layer; (c) forming a cover by vacuum depositing a third polymer layer followed by vacuum depositing a second ceramic layer on the third polymer layer, then vacuum depositing a fourth polymer layer on the second ceramic layer; and (d) encapsulating said organic light emitting device by placing said cover over said organic light emitting device thereby forming said flexible environmental barrier encapsulating said organic light emitting device.