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Coated article with IR reflecting layer and method of making same

  • US 9,403,345 B2
  • Filed: 09/15/2015
  • Issued: 08/02/2016
  • Est. Priority Date: 04/21/2008
  • Status: Expired due to Fees
First Claim
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1. An IG window unit including a coating supported by a glass substrate, the coating from the glass substrate outwardly comprising at least the following:

  • a dielectric layer comprising silicon nitride;

    a dielectric layer comprising an oxide of titanium;

    another dielectric layer;

    a layer comprising zinc oxide;

    an infrared (IR) reflecting layer comprising silver on the glass substrate, located over and directly contacting the layer comprising zinc oxide, wherein the coating includes only one IR reflecting layer;

    an overcoat comprising (i) a layer comprising tin oxide and (ii) a layer comprising silicon nitride located over and contacting the layer comprising tin oxide;

    wherein the IG unit has an SHGC value of at least 0.65, a visible transmission of at least 70%, and an Energy Rating of at least 25; and

    wherein said glass substrate is an interior glass substrate, the IG unit further comprising an exterior glass substrate to be located adjacent an exterior of a building in which the IG unit is provided, wherein the coating is provided on a surface of the interior glass substrate facing a gap between the interior and exterior glass substrates, and wherein the IG unit has, as viewed from an exterior of the building, a reflective a* value of from about −

    4 to 0 and a reflective b* value of from about −

    1 to +2.5.

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