Articles including anticondensation coatings and/or methods of making the same

• US 9,469,767 B2
• Filed: 02/19/2015
• Issued: 10/18/2016
• Est. Priority Date: 02/26/2010
• Status: Active Grant

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Lemmer, Jean-Marc, Murphy, Nestor P.
• Primary Examiner(s): SAMPLE, DAVID R
• Application Number:
  US14/625,888
• Publication Number:
  US 20150159021A1
• Time in Patent Office: 607 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B60J 1/002 with means for clear vision, e.g. anti-frost or defog panes, rain shields window heating in H05B3/84, H05B3/86
• CPC Class Codes: C03C 17/3417 all coatings being oxide coatings
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 2217/214 Al2O3
• CPC Class Codes: C03C 2217/22 ZrO2
• CPC Class Codes: C03C 2217/231 In2O3/SnO2
• CPC Class Codes: C03C 2217/281 Nitrides
• CPC Class Codes: C03C 2218/154 by sputtering
• CPC Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: C23C 14/0652 Silicon nitride
• CPC Class Codes: C23C 14/081 of aluminium, magnesium or beryllium
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: C23C 14/086 of zinc, germanium, cadmium, indium, tin, thallium or bismuth
• CPC Class Codes: C23C 14/34 Sputtering
• CPC Class Codes: C23C 28/04 only coatings of inorganic non-metallic material
• CPC Class Codes: E06B 3/6715 specially adapted for increased thermal insulation or for controlled passage of light E06B3/66323 takes precedence; coating of glass pains C03C17/00; devices or arrangements for controlling the intensity, colour, phase, polarisation or direction of light G02F1/00
• CPC Class Codes: Y10T 428/2495 Thickness [relative or absolute]

Abstract

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.

Claims

1. A window comprising:

a coating supported by a glass substrate, the coating being exposed to an adjacent external environment, wherein the coating comprises the following layers moving away from the glass substrate;

a transparent layer comprising indium-tin-oxide (ITO) having a physical thickness of from 75-175 nm,

a dielectric layer comprising silicon and nitrogen and being doped with aluminum, and

a dielectric layer comprising oxygen and aluminum, the dielectric layer comprising oxygen and aluminum being located directly on and contacting the dielectric layer comprising silicon and nitrogen,

wherein said layer comprising ITO is located directly under and contacting said dielectric layer comprising silicon and nitrogen,

wherein the layer comprising silicon and nitrogen is thinner than is the layer comprising ITO,

wherein a visible transmission of the coating and the glass substrate is 80% or higher, and

the coating has a sheet resistance of less than 30 ohms/square, and

wherein said dielectric layer comprising oxygen and aluminum is an outermost layer of the coating and is exposed to the external environment.

2. The window of claim 1, further comprising a dielectric layer located directly between and contacting the glass substrate and the layer comprising ITO.

3. The window of claim 1, wherein the external environment is the inside of a house or vehicle.

4. The window of claim 1, wherein the external environment is the outside environment.

5. The window of claim 1, wherein each of said layers is sputter-deposited.

6. A coated article comprising:

a coating supported by a glass substrate, the coating being exposed to an adjacent external environment, wherein the coating comprises the following layers moving away from the glass substrate;

a transparent layer comprising indium-tin-oxide (ITO) having a physical thickness of from 75-175 nm,

a dielectric layer comprising silicon and nitrogen and being doped with aluminum, and

a dielectric layer comprising oxygen and aluminum, the dielectric layer comprising oxygen and aluminum being located directly on and contacting the dielectric layer comprising silicon and nitrogen,

wherein said layer comprising ITO is located directly under and contacting said dielectric layer comprising silicon and nitrogen,

wherein the layer comprising silicon and nitrogen is thinner than is the layer comprising ITO,

wherein a visible transmission of the coated article is 80% or higher, and

the coating has a sheet resistance of less than 30 ohms/square, and

wherein said dielectric layer comprising oxygen and aluminum is an outermost layer of the coating and is exposed to the external environment.

7. The coated article of claim 6, further comprising a dielectric layer located directly between and contacting the glass substrate and the layer comprising ITO.

8. The coated article of claim 6, wherein the external environment is the inside of a house or vehicle.

9. The coated article of claim 6, wherein the external environment is the outside environment.