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Substrate having thermal management coating for an insulating glass unit

  • US 7,910,229 B2
  • Filed: 09/11/2006
  • Issued: 03/22/2011
  • Est. Priority Date: 05/03/2002
  • Status: Expired due to Term
First Claim
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1. An insulating glass unit, comprising:

  • a first pane defining a #1 surface and a #2 surface;

    at least one second pane comprising clear glass and defining a #3 surface and a #4 surface, with the #2 surface facing the #3 surface; and

    a coating formed over at least a portion of the #3 surface;

    wherein the coating comprisesa first separation layer comprising a zinc oxide layer over a zinc stannate layer, wherein the zinc oxide layer has a thickness in the range of 75 Å

    to 150 Å

    ;

    a first infrared reflective layer deposited over the first separation layer;

    a second separation layer comprising a first zinc oxide layer having a thickness in the range of 75 Å

    to 150 Å

    , a zinc stannate layer deposited over the first zinc oxide layer, and a second zinc oxide layer having a thickness in the range of 75 Å

    to 150 Å

    deposited over the zinc stannate layer;

    a second infrared reflective layer deposited over the second separation layer;

    a third separation layer comprising a first zinc oxide layer having a thickness in the range of 75 Å

    to 150 Å

    , a zinc stannate layer deposited over the first zinc oxide layer, and a second zinc oxide layer having a thickness in the range of 75 Å

    to 150 Å

    deposited over the zinc stannate layer; and

    a third infrared reflective layer deposited over the third separation layer; and

    wherein the coating provides the unit with a reference solar heat gain coefficient of less than or equal to 0.36.

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