# US 2010/0167034 A1 · Low-emissivity glazing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167034 A1 - Document ID: US20100167034A1 - Status: Published application - Kind: A1 - Application number: 12/532,318 - Filed: 2008-03-17 - Published: 2010-07-01 - Earliest claimed: 2007-03-19 - Assignees: AGC Flat Glass Europe SA - Inventors: Jean-Michel Depauw; Gaetan Di Stefano - Web page: https://patentgrep.com/patent/US20100167034A1 ## CPC - C03C 17/36: at least one coating being a metal - C03C 17/3613: {Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other} - C03C 17/3626: {one layer at least containing a nitride, oxynitride, boronitride or carbonitride} - C03C 17/3639: {Multilayers containing at least two functional metal layers} - C03C 17/3644: {the metal being silver} - C03C 17/366: {Low-emissivity or solar control coatings} - C03C 17/3681: {the multilayer coating being used in glazing, e.g. windows or windscreens} - C03C 2218/154: by sputtering - C03C 2218/155: by reactive sputtering - Y10T 428/24975: No layer or component greater than 5 mils thick - Y10T 428/265: 1 mil or less - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention relates to a glazing coated with an assembly of thin layers using vacuum deposition, said glazing having reflective properties for infrared radiation, while retaining a high transmission in the visible range, and retaining its properties when subjected to a thermal treatment such as bending/toughening. The glazing comprises one or more silver-based layers and dielectric layers, of which at least one underlying dielectric layer in relation to at least one silver-based layer is a titanium oxide- or oxynitride-based layer such as TiMOx or TiMOxNy, in which M is a metal or a plurality of metals or silicon, wherein these metals or silicon are contained in sufficient atomic proportions to prevent a significant transformation of the crystallographic structure of the previously deposited titanium oxide-based layer under the action of the thermal treatment. ## Claims ### Claim 1 A glazing unit comprising an assembly of thin layers obtained by a vacuum deposition technique wherein the assembly of thin layers has a reflective property for infrared radiation and a high transmission in the visible range, wherein the properties of the assembly of thin layers, are not substantially changed when the glazing unit is subjected to a thermal treatment, and wherein the assembly of thin layers comprises one or more silver-based layers and dielectric layers, of which at least one underlying dielectric layer is a titanium oxide- or oxynitride-based layer of TiMOx or TiMOxNy, wherein M is a metal or a plurality of metals or silicon, wherein the metals or silicon are in sufficient atomic proportions to prevent a significant transformation of the crystallographic structure of the previously deposited titanium oxide-based layer under the thermal treatment. ### Claim 2 (depends on 1) The glazing unit according to claim 1, wherein the metal or metals included in the composition of the titanium oxide- or oxynitride-based layer is selected from the group consisting of Zr, Nb, Hf, Ta, Nd, V, Ce, W, Mo, La, Y, and Al. ### Claim 3 (depends on 1) The glazing unit according to claim 1, wherein the atomic proportion of the metal or metals or the silicon in association with the titanium in the titanium oxide- or oxynitride-based layer, M/Ti, is not less than 10. ### Claim 4 (depends on 1) The glazing unit according to claim 1, wherein the proportion of N2/O2 in the titanium oxynitride-based layer is not higher than 30. ### Claim 5 (depends on 1) The glazing unit according to claim 1, wherein the titanium oxide- or oxynitride-based layer has a thickness of not less than 6 nm. ### Claim 6 (depends on 1) The glazing unit according to claim 1, wherein the metal or metals or silicon in the composition of the titanium oxide- or oxynitride-based layer has a refractive index higher than 2.2. ### Claim 7 (depends on 1) The glazing unit according to claim 1, wherein a zinc oxide-based layer with a thickness at most equal to 10 nm is located below the at least one silver-based layer and in contact therewith. ### Claim 8 (depends on 7) The glazing unit according to claim 7, wherein the zinc oxide-based layer is a layer of ZnO, ZnAlOz, ZnSnOz or ZnMgOz, in which the atomic proportion of Al/Zn, Sn/Zn or Mg/Zn is not higher than 15%. ### Claim 9 (depends on 1) The glazing unit according to claim 1, wherein at least one silver-based layer is covered by at least one TiOw titanium-based barrier layer with w≦2, or an NiCrOv layer or both. ### Claim 10 (depends on 9) The glazing unit according to claim 9, wherein the TiOw and NiCrOv layer, or both have a thickness of not more than 10 nm, and each of the layers individually has a thickness of not more than 6 nm. ### Claim 11 (depends on 1) The glazing unit according to claim 1, comprising a single silver-based layer in a quantity in the range of between 80 and 160 mg/m2. ### Claim 12 (depends on 11) The glazing unit according to claim 11, wherein after a thermal treatment at a temperature higher than 650° C. and for a period of at least 3 minutes, the quality of the silver-based layer or layers is such that Q×∈<5.0 wherein Q is expressed in mg/m2 and ∈ is the normal emissivity. ### Claim 13 (depends on 1) The glazing unit according to claim 1, comprising a layer assembly: glass/TiMOx, or TiMOxNy/ZnO or ZnAlOz or ZnSnOz or ZnMgOz/Ag/barrier/dielectric II. ### Claim 14 (depends on 13) The glazing unit according to claim 13 additionally comprising one or more dielectric layers located between the glass and the TiMOx or TiMOxNy layer and/or above this layer below the ZnO or ZnAlOz or ZnSnOz or ZnMgOz layer. ### Claim 15 (depends on 14) The glazing unit according to claim 14, comprising one of the following structures: glass/dielectric/TiMOx or TiMOxNy/ZnO or ZnAlOz or ZnSnOz or ZnMgOz/Ag/barrier/dielectric II, glass/TiMOx or TiMOxNy/dielectric/ZnO or ZnAlOz or ZnSnOz or ZnMgOz/Ag/barrier/dielectric II, and glass/dielectric/TiMOx or TiMOxNy/dielectric/ZnO or ZnAlOz or ZnSnOz or ZnMgOz/Ag/barrier/dielectric II, wherein the additional dielectric layers for the last structure are identical or different. ### Claim 16 (depends on 15) The glazing unit according to claim 15, wherein the additional dielectric layer or layers is at least one zinc and tin mixed oxide-based layer with a proportion by weight of Zn/Sn in the range of between 30 and 70%. ### Claim 17 (depends on 1) The glazing unit according to claim 1, comprising at least two silver-based layers, each of these layers having at least one assembly of layers of TiMOx or TiMOxNy/ZnO, ZnAlOz, ZnSnOz, or ZnMgOz. ### Claim 18 (depends on 16) The glazing unit according to claim 16, wherein in addition to the TiMOx or TiMOxNy layer one or more additional dielectric layers are located above and/or below this TiMOx or TiMOxNy layer.