DETAILED DESCRIPTION These needs are met by the present invention which is an encapsulated organic light emitting device (OLED).
In one embodiment, the encapsulated OLED includes a substrate, an organic light emitting device adjacent to the substrate, and at least one first barrier stack adjacent to the organic light emitting device, the at least one first barrier stack comprising at least one first barrier layer and at least one first decoupling layer, wherein the at least one first barrier stack encapsulates the organic light emitting device.
By `adjacent,` we mean next to, but not necessarily directly next to.
There can be additional layers intervening between the adjacent layers.
Optionally, there can be at least one second barrier stack adjacent to the organic light emitting layer device and located between the substrate and the organic light emitting device.
The second barrier stack has at least one second barrier layer and at least one second decoupling layer.
The first barrier stack can be substantially transparent, the second barrier stack can be substantially transparent, or both the first and second barrier stacks can be substantially transparent, depending upon the particular application.
At least one of the first or second barrier layers may be made from a material including, but not limited to, metals, metal oxides, metal nitrides, metal carbides, metal oxynitrides, metal oxyborides, and combinations thereof.
Metals include, but are not limited to, aluminum, titanium, indium, tin, tantalum, zirconium, niobium, hafnium, yttrium, nickel, tungsten, chromium, zinc, alloys thereof, and combinations thereof.
Metal oxides include, but are not limited to, silicon oxide, aluminum oxide, titanium oxide, indium oxide, tin oxide, indium tin oxide, tantalum oxide, zirconium oxide, niobium oxide, hafnium oxide, yttrium oxide, nickel oxide, tungsten oxide, chromium oxide, zinc oxide, and combinations thereof.
Metal nitrides include, but are not limited to, aluminum nitride, silicon nitride, boron nitride, germanium nitride, chromium nitride, nickel nitride, and combinations thereof
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