Transparent substrate provided with a heat-reflective multilayer stack
AssigneeSaint-Gobain Glass France
InventorsMarc Maurer, Norbert Huhn, Pascal Le Masson
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Abstract
The subject of the invention is a flexible or rigid, transparent substrate provided with a stack of thin layers, which includes at least one functional layer predominantly based on silver Ag placed between two coatings of dielectric material, at least one of the coatings comprising a layer predominantly based on aluminum nitride AlN. The functional layer or at least one of the functional layers is modified by incorporating at least one minor metal M other than Ag and/or the said AlN-based layer, or at least one of them, is modified by incorporating at least one metal M′ in a minor amount compared with the aluminum.
Claims24
A transparent substrate comprising a base and a stack of thin layers, wherein said stack of thin layers comprises:
- (i) a first coating of dielectric material;
- (ii) a second coating of dielectric material;
- and
- (iii) a functional layer wherein the functional layer comprises silver, has a first face and a second face, is disposed between the first coating of dielectric material and the second coating of dielectric material, and at least one of the first coating of dielectric material or the second coating of dielectric material contacts the functional layer at an interface;
- wherein at least one of the first coating of dielectric material or the second coating of dielectric material that contacts the functional layer at an interface comprises AlN;
- and
- wherein the functional layer comprises a first metal other than silver and/or at least one of the first coating of dielectric material or the second coating of dielectric material comprising AlN that contacts the functional layer at an interface comprises a second metal other than Al.
A transparent substrate comprising a base and a stack of thin layers, wherein said stack of thin layers comprises:
- (i) a first coating of dielectric material;
- (ii) a second coating of dielectric material;
- and
- (iii) a functional layer wherein the functional layer comprises silver, has a first face and a second face, is disposed between the first coating of dielectric material and the second coating of dielectric material, and at least one of the first coating of dielectric material or the second coating of dielectric material contacts the functional layer at an interface;
- wherein at least one of the first coating of dielectric material or the second coating of dielectric material that contacts the functional layer comprises AlN and a second metal in an amount less than the aluminum, and the concentration of the second metal in the dielectric material comprising AlN is greatest near the interface.
Dependencies are inferred from the claim text.