Material coated with a functional coating comprising a high-index layer
AssigneeSaint-Gobain Glass France
InventorsThomas Barres, Alexandra Toumar, Véronique Rondeau
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Abstract
A material includes a transparent substrate coated with a functional coating including only two functional metal layers based on silver which are called, starting from the substrate, the first and second functional layers, and three dielectric coatings which are called, starting from the substrate, Di1, Di2 and Di3, each dielectric coating including at least one dielectric layer, such that each functional metal layer is arranged between two dielectric coatings, wherein the first dielectric coating Di1 includes a layer based on silicon zirconium nitride with a high refractive index, SixZryNz, and with an atomic ratio of Zr to the sum of Si+Zr, y/(x+y), higher than 0.20.
Claims20
A material comprising a transparent substrate coated with a functional coating comprising only two silver-based functional metallic layers and comprising three dielectric coatings, each dielectric coating comprising at least one dielectric layer, so that each silver-based functional metallic layer is positioned between two dielectric coatings such that the functional coating comprises, starting from the substrate, a first dielectric coating Di1, a first silver-based functional metallic coating, a second dielectric coating Di2, a second silver-based functional metallic coating and a third dielectric coating Di3, wherein the first dielectric coating Di1 comprises:
- a layer based on silicon zirconium nitride with a high refractive index, SixZryNz, and with an atomic ratio of Zr to the sum of Si+Zr, y/(x+y), higher than 0.20,
- a layer based on silicon oxynitride located below the layer based on silicon zirconium nitride with the high refractive index, and
- a layer based on zinc tin oxide or zinc oxide located above and in contact with the layer based on silicon zirconium nitride with the high refractive index.
A material comprising a transparent substrate coated with a functional coating comprising only two silver-based functional metallic layers and comprising three dielectric coatings, each dielectric coating comprising at least one dielectric layer, so that each silver-based functional metallic layer is positioned between two dielectric coatings such that the functional coating comprises, starting from the substrate, a first dielectric coating Di1, a first silver-based functional metallic coating, a second dielectric coating Di2, a second silver-based functional metallic coating and a third dielectric coating Di3, wherein:
- the first dielectric coating Di1 comprises, in this order:
- a layer based on silicon oxynitride of 0 to 20 nm,
- a layer based on silicon nitride of 0 to 20 nm,
- a high refractive index silicon zirconium nitride layer, SixZryNz, of 5 to 25 nm, the high refractive index silicon zirconium nitride layer having an atomic ratio of Zr to the sum of Si+Zr, y/(x+y), higher than 0.20,
- a layer based on zinc tin oxide of 0 to 15 nm,
- a layer based on zinc oxide of 2 to 12 nm,
- the second dielectric coating Di2 comprises, in this order:
- a layer based on zinc oxide of 2 to 12 nm,
- a layer based on silicon nitride of 15 to 100 nm,
- a layer based on zinc tin oxide of 0 to 20 nm,
- a layer based on zinc oxide of 2 to 12 nm,
- the third dielectric coating Di3 comprises, in this order:
- a layer based on zinc oxide of 2 to 12 nm,
- one or more layers based on silicon nitride, the thickness of all these layers based on silicon nitride is from 15 to 75 nm or from 20 to 45 nm,
- an upper protective layer of 0 to 5 nm,
- all these thicknesses being physical thicknesses.
Dependencies are inferred from the claim text.