# US 12,006,250 B2 · Glazing and method of its production > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,250 B2 - Document ID: US12006250B2 - Status: Granted - Kind: B2 - Application number: 18/199,124 - Filed: 2023-05-18 - Published: 2023-10-05 - Granted: 2024-06-11 - Earliest claimed: 2018-10-22 - Assignees: Mimsi Materials AB - Applicants: MIMSI Materials AB - Inventors: Viktor John Elofsson; Mattias Samuelsson; Sankara Pillay - Web page: https://patentgrep.com/patent/US12006250B2 ## CPC - C03C 17/36: at least one coating being a metal - C03C 17/3647: {in combination with other metals, silver being more than 50%} - C03C 17/09: by deposition from the vapour phase - C03C 17/3639: {Multilayers containing at least two functional metal layers} - C03C 17/366: {Low-emissivity or solar control coatings} - C03C 17/3681: {the multilayer coating being used in glazing, e.g. windows or windscreens} - C22C 5/06: Alloys based on silver - C23C 14/18: on other inorganic substrates - C23C 14/185: {by cathodic sputtering} - C23C 14/35: by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)} - G02B 1/113: using inorganic layer materials only - C03C 2217/73: Anti-reflective coatings with specific characteristics - C03C 2218/156: by magnetron sputtering - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - C22C: ALLOYS (treatment of alloys C21D, C22F) - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present document discloses a glazing in the form of a window glass or vehicle glass which comprises a transparent glass substrate, and a coating, which comprises at least one functional metal Ag alloy coating layer. The alloy coating layer consists essentially of Ag with an alloying agent selected from a group consisting of Mg, Al, Si, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ge, Zr, Nb, Mo, In, Sn, Hf, Ta or W. An alloying agent concentration is 0.15-1.35 at. %, preferably 0.20-1.00 at. % or 0.25-0.80 at. % of the Ag alloy coating layer, the rest being Ag, and the Ag alloy coating layer has a thickness of 5-20 nm, preferably 8-15 nm or more preferably 8-12 nm. ## Claims ### Claim 1 A glazing in the form of a window glass or vehicle glass, comprising: a transparent glass substrate, and a coating, comprising at least one functional metal Ag alloy coating layer, wherein the Ag alloy coating layer consists of Ag with an Al alloying agent and inevitable impurities, wherein the alloying agent is present in a concentration of 0.15 to 0.77 at. % of the Ag alloy coating layer, the rest being Ag, and wherein the Ag alloy coating layer has a thickness of 5-20 nm. ### Claim 2 (depends on 1) The glazing as claimed in claim 1 wherein the glazing presents a direct solar transmittance, as determined according to the European standard EN 410, which is lower than a direct solar transmittance of a glazing having a comparative coating with the same layer structure and layer thicknesses as the Ag alloy coating layer, wherein in the comparative coating, the Ag alloy coating layer is replaced by an unalloyed Ag functional metal layer. ### Claim 3 (depends on 1) The glazing as claimed in claim 1, wherein the glazing presents a direct solar reflectance, as determined according to the European standard EN 410, which is higher than a direct solar reflectance of a glazing having a comparative coating with the same layer structure and layer thicknesses as the Ag alloy coating layer, wherein in the comparative coating, the Ag alloy coating layer is replaced by an unalloyed Ag functional metal layer. ### Claim 4 (depends on 1) The glazing as claimed in claim 1, wherein the coating further comprises at least two anti-reflective layers, each having at least one dielectric layer, wherein each Ag alloy coating layer is sandwiched between two anti-reflective layers. ### Claim 5 (depends on 1) The glazing as claimed in claim 1, wherein the coating further comprises at least one blocker layer located immediately above and in direct contact with the Ag alloy coating layer. ### Claim 6 (depends on 1) The glazing as claimed in claim 1, wherein the coating further comprises at least one seed layer located immediately below and in contact with the Ag alloy coating layer. ### Claim 7 (depends on 1) The glazing as claimed in claim 1, wherein the coating further comprises at least one diffusion barrier layer located immediately on top of the transparent glass substrate. ### Claim 8 (depends on 4) The glazing as claimed in claim 4, wherein the coating further comprises at least one top layer located immediately onto the outermost anti-reflective layer. ### Claim 9 (depends on 1) The glazing as claimed in claim 1, further comprising at least one further functional metal Ag alloy coating layer, wherein the at least one further Ag alloy coating layer consists of Ag with an Al alloying agent and inevitable impurities, wherein the alloying agent is present in a concentration of 0.15-1.35 at. % of the at least one further Ag alloy coating layer, the rest being Ag, and wherein the at least one further Ag alloy coating layer has a thickness of 5-20 nm. ### Claim 10 (depends on 1) The glazing as claimed in claim 1, wherein the glazing has a light transmittance of at least 20% as determined according to the standard EN 410. ### Claim 11 A method of producing a glazing in the form of window glass or vehicle glass, comprising: providing a transparent glass substrate, applying, by Physical Vapor Deposition, at least one functional metal Ag alloy coating layer to the substrate, such that the Ag alloy coating layer consists of Ag with an Al alloying agent and inevitable impurities, wherein the alloying agent is present in a concentration of 0.15 to 0.77 at. % of the coating layer, the rest being Ag, and the Ag alloy coating layer has a thickness of 5-20 nm. ### Claim 12 (depends on 11) The method as claimed in claim 11, wherein the method further comprises providing at least two anti-reflective layers, each having at least one dielectric layer, such that each Ag alloy coating layer is sandwiched between two anti-reflective layers. ### Claim 13 (depends on 11) The method claimed in claim 11, wherein the method further comprises providing at least one blocker layer immediately above and in direct contact with the Ag alloy coating layer. ### Claim 14 (depends on 11) The method as claimed in claim 11, wherein the method further comprises providing at least one seed layer immediately below and in contact with the Ag alloy coating layer. ### Claim 15 (depends on 11) The method as claimed in claim 11, wherein the method further comprises providing at least one diffusion barrier layer immediately on top of the transparent glass substrate. ### Claim 16 (depends on 12) The method as claimed in claim 12, wherein the method further comprises providing at least one top layer immediately onto the outermost anti-reflective layer. ### Claim 17 (depends on 11) The method as claimed in claim 11 wherein the functional metal Ag alloy coating layer is deposited from an Ag alloy sputtering target, wherein the Ag alloy sputtering target consists of Ag with an Al alloying agent and inevitable impurities, wherein the alloying agent is present in a concentration of 0.15 to 0.77 at. % of the Ag alloy sputtering target, the rest being Ag.