Articles including anticondensation coatings and/or methods of making the same
View Patent ↗Certain example embodiments of this invention relate to articles including anticondensation coatings that are exposed to an external environment, and/or methods of making the same. In certain example embodiments, the anticondensation coatings may be survivable in an outside environment. The coatings also may have a sufficiently low sheet resistance and hemispherical emissivity such that the glass surface is more likely to retain heat from the interior area, thereby reducing (and sometimes completely eliminating) the presence condensation thereon. The articles of certain example embodiments may be, for example, skylights, vehicle windows or windshields, IG units, VIG units, refrigerator/freezer doors, and/or the like.
1. A skylight, comprising:
first and second substantially parallel, spaced apart glass substrates;
a plurality of spacers arranged to help maintain the first and second substrates in substantially parallel, spaced apart relation to one another;
an edge seal sealing together the first and second substrates; and
an anticondensation coating provided on an exterior surface of the first substrate exposed to an environment external to the skylight, the anticondensation coating comprising the following layers moving away from the first substrate:
a layer comprising silicon oxynitride,
a transparent conductive layer comprising indium-tin-oxide (ITO), and
another layer comprising silicon nitride,
wherein the anticondensation coating has a hemispherical emissivity of less than 0.23 and a sheet resistance of less than 30 ohms/square.
2. The skylight of claim 1 , wherein the another layer comprising silicon nitride further comprises oxygen.
3. The skylight of claim 1 , wherein the layer comprising silicon oxynitride is doped with aluminum.
4. The skylight of claim 1 , wherein the anticondensation coating further comprises a further layer comprising silicon nitride and a layer comprising titanium oxide that are located between the glass substrate and said layer comprising silicon oxynitride.
5. The skylight of claim 1 , wherein a low emissivity coating including at least one infrared (IR) reflecting layer comprising silver is disposed on an inner surface of the first substrate and/or an inner surface of the second substrate.
6. A window comprising:
a coating supported by a glass substrate, wherein the coating is an anticondensation coating comprising the following layers moving away from the glass substrate:
a dielectric layer comprising silicon oxynitride,
a transparent conductive layer comprising indium-tin-oxide (ITO),
a layer comprising silicon nitride, and
wherein said layer comprising ITO is located between and directly contacting said dielectric layer comprising silicon oxynitride and said layer comprising silicon nitride,
wherein the anticondensation coating is disposed on an exterior surface of the substrate such that the anticondensation coating is exposed to an external environment, and
the anticondensation coating has a hemispherical emissivity of less than 0.23 and a sheet resistance of less than 30 ohms/square.
7. The window of claim 6 , wherein the another layer comprising silicon nitride further comprises oxygen.
8. The window of claim 6 , wherein the layer comprising silicon oxynitride is doped with aluminum.
9. The window of claim 6 , wherein the anticondensation coating further comprises a further layer comprising silicon nitride and a layer comprising titanium oxide that are located between the glass substrate and said layer comprising silicon oxynitride.
10. The window of claim 6 , wherein a low emissivity coating including at least one infrared (IR) reflecting layer comprising silver is also disposed on the glass substrate so that the low emissivity coating and the layer comprising ITO are located on opposite sides of the glass substrate.
11. The window of claim 6 , wherein the external environment is the inside of a house or vehicle.
12. The window of claim 6 , wherein the external environment is the outside environment.
13. The window of claim 6 , wherein the window is an insulating glass (IG) window unit.
14. The window of claim 6 , wherein the window is provided as part of a refrigerator/freezer door.