Transparent substrate provided with a thin-film stack with properties in the infrared
First Claim
1. Transparent coated substrate provided with a thin-film stack, said thin film stack comprising:
- at least one lower anti-reflection film made of a dielectric material;
at least one upper anti-reflection film made of a dielectric material;
at least one metal film having low emissivity in the infrared disposed between said lower anti-reflection film and said upper anti-reflection film;
at least one protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy disposed between said metal film and said upper anti-reflection film; and
an anti-reflection film containing a noble metal component comprising Pd, Au, Ir, Pt, Rh or mixtures thereof in an amount of between about 0.05% and 10% by weight which is disposed directly below said metal film.
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Accused Products
Abstract
The invention relates to a transparent substrate, in particular glass substrate, provided with a thin-film stack including at least one metal film with properties in the infrared, in particular a low-emissivity one, arranged between two coatings which each include at least one anti-reflection film based on dielectric material, and at least one protective film based on a sacrificial metal or a partially or fully oxidized sacrificial metal or a sacrificial metal alloy placed between the said metal film and one of the said coatings. According to the invention, the film placed directly below and/or above the said metal film contains at least one of the noble metals Pd, Au, Ir, Pt and Rh. The low-level addition of one or more of these metals to the others, namely the film placed below and/or above the metal film, leads to an increase in the chemical stability and the hardness of the thin-film stack.
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Citations
25 Claims
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1. Transparent coated substrate provided with a thin-film stack, said thin film stack comprising:
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at least one lower anti-reflection film made of a dielectric material; at least one upper anti-reflection film made of a dielectric material; at least one metal film having low emissivity in the infrared disposed between said lower anti-reflection film and said upper anti-reflection film; at least one protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy disposed between said metal film and said upper anti-reflection film; and an anti-reflection film containing a noble metal component comprising Pd, Au, Ir, Pt, Rh or mixtures thereof in an amount of between about 0.05% and 10% by weight which is disposed directly below said metal film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 22)
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11. Transparent coated substrate provided with a thin-film stack, said thin film stack comprising:
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at least one lower anti-reflection film made of a dielectric material; at least one upper anti-reflection film made of a dielectric material; at least one metal film having low emissivity in the infrared disposed between said lower anti-reflection film and said upper anti-reflection film; at least one lower protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy, which is disposed between said metal film and said lower anti-reflection film directly below said metal film and which contains at least on noble metal selected from the group consisting of Pd, Au, Ir, Pt, and Rh in an amount of between about 0.05% and 10% by weight; and at least one upper protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy disposed between said metal film and said upper anti-reflection film. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23)
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24. Transparent coated substrate provided with a thin-film stack, said thin film stack comprising:
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at least one lower anti-reflection film made of a dielectric material; at least one upper anti-reflection film made of a dielectric material; at least one metal film having low emissivity in the infrared disposed between said lower anti-reflection film and said upper anti-reflection film; at least one protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy disposed between said metal film and said upper anti-reflection film; and an anti-reflection film containing a noble metal component comprising Au, Ir, Rh or mixtures thereof which is disposed directly below said metal film.
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25. Transparent coated substrate provided with a thin-film stack, said thin film stack comprising:
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at least one lower anti-reflection film made of a dielectric material; at least one upper anti-reflection film made of a dielectric material; at least one metal film having low emissivity in the infrared disposed between said lower anti-reflection film and said upper anti-reflection film; at least one lower protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy, which is disposed between said metal film and said lower anti-reflection film directly below said metal film and which contains at least on noble metal selected from the group consisting of Au, Ir, and Rh; and at least one upper protective film made of a sacrificial metal, a partially or fully oxidized sacrificial metal, or a sacrificial metal alloy disposed between said metal film and said upper anti-reflection film.
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Specification