COATED ARTICLE WITH HIGH VISIBLE TRANSMISSION AND LOW EMISSIVITY

• US 20130323514A1
• Filed: 07/08/2013
• Published: 12/05/2013
• Est. Priority Date: 10/17/2001
• Status: Abandoned Application

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: LAIRD, Ronald E., KRILTZ, Uwe
• Application Number:
  US13/936,238
• Publication Number:
  US 20130323514A1
• Time in Patent Office: Days
• US Class Current: 428/432
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3618 Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3636 one layer at least containing silicon, hydrogenated silicon or a silicide
• CPC Class Codes: C03C 17/3639 Multilayers containing at least two functional metal layers
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 2217/78 Coatings specially designed to be durable, e.g. scratch-resistant
• CPC Class Codes: Y10T 428/12896 Ag-base component

Abstract

A coated article that can be used in applications such as insulating glass (IG) units, so that resulting IG units can achieve high visible transmission of at least 70% (e.g., when using clear glass substrates from 1.0 to 3.5 mm thick), combined with at least one of: (a) SHGC no greater than about 0.45, more preferably no greater than about 0.40; (b) SC no greater than about 0.49, more preferably no greater than about 0.46; (c) chemical and/or mechanical durability; (d) neutral transmissive color such that transmissive a* is from −5.0 to 0 (more preferably from −3.5 to −1.5), and transmissive b* is from −2.0 to 4.0 (more preferably from 1.0 to 3.0); and (e) neutral reflective color from the exterior of the IG unit (i.e., R_g/R_out) such that reflective a* is from −3.0 to 2.0 (more preferably from −2.0 to 0.5), and reflective b* is from −5.0 to 1.0 (more preferably from −4.0 to −1.0). In certain example non-limiting embodiments, coated articles herein comprise: substrate/TiO_x/ZnO_x/Ag/NiCrO_x/SnO_x/ZnO_x/Ag/NiCrO_x/SnO_x/Si_xN_y.

Claims

1-40. -40. (canceled)

41. A coated article including a coating supported by a glass substrate, the coating comprising from the glass substrate outwardly:

sputtering a coating on the glass substrate, the coating comprising at least the following layers on the glass substrate;

a layer comprising titanium oxide on and directly contacting the glass substrate;

a first layer comprising silver over at least the layer comprising titanium oxide;

a first layer comprising nickel chromium oxide over and contacting the layer comprising silver;

a layer comprising tin oxide on and directly contacting the first layer comprising nickel chromium oxide;

a layer comprising zinc oxide on and directly contacting the layer comprising tin oxide;

a second layer comprising silver on and directly contacting the layer comprising zinc oxide;

a layer comprising tin oxide over at least the second layer comprising silver; and

a layer comprising silicon nitride on and directly contacting the layer comprising tin oxide.