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US 2009/0021150 A1Published application
Barrier coatings
AssigneeGeneral Electric Company
InventorsTae Won KIM, Christian Maria Anton Heller, Marc Schaepkens, Ahmet Gun Erlat, Min Yan
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Abstract
A barrier coating of organic-inorganic composition, the barrier coating having optical properties that are substantially uniform along an axis of light transmission, said axis oriented substantially perpendicular to the surface of the coating.
Claims32
A composite article comprising:
- a barrier coating of organic-inorganic composition, the barrier coating having optical properties that are substantially uniform along an axis of light transmission, said axis oriented substantially perpendicular to the surface of the coating.
A method for depositing a barrier coating, comprising the steps of:
- providing at least one surface for deposition;
- depositing reaction or recombination products of reacting species on the surface;
- changing the compositions of the reactants fed into the reactor chamber during the deposition to form a compositionally organic-inorganic coating;
- said coating comprising at least one substantially organic zone and at least one substantially inorganic zone;
- performing refractive index modification of the at least one inorganic zone by varying the precursor gas composition, said refractive index of the inorganic zone being adjusted to provide a substantially uniform refractive index along an axis of light transmission through said barrier coating.
2 more elements
A device assembly comprising a device, at least one surface of which is coated with a barrier coating of organic-inorganic composition;
- said barrier coating of organic-inorganic composition having substantially uniform refractive index along the axis of light transmission perpendicular to the surface of the coating and said composition varying across the thickness of the coating.
Dependencies are inferred from the claim text.