Glazing panel
First Claim
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1. A heat treatable glazing panel carrying a coating stack comprising in sequence at least:
- a glass substrate a base antireflective layer an infra-red reflecting layer, and a top antireflective layer characterised in that the base antireflective layer comprises at least one layer comprising a nitride of aluminium;
wherein said infra-red reflecting layer comprises Ag as the main component and Pd in an amount of from 0.3 to 5.0 at % to Ag.
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Abstract
A glazing panel carrying a solar control coating stack comprising in sequence at least: a glass substrate base antireflective layer comprising at least one layer comprising a nitride of aluminium an infra-red reflecting layer; and a top antireflective layer. The nitride of aluminium confers, inter alia, good thermal stability on the coating, particularly during heat treatment.
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Citations
25 Claims
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1. A heat treatable glazing panel carrying a coating stack comprising in sequence at least:
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a glass substrate a base antireflective layer an infra-red reflecting layer, and a top antireflective layer characterised in that the base antireflective layer comprises at least one layer comprising a nitride of aluminium;
whereinsaid infra-red reflecting layer comprises Ag as the main component and Pd in an amount of from 0.3 to 5.0 at % to Ag. - View Dependent Claims (2, 4, 5, 6, 7, 14, 15, 17, 18, 19)
a glass substrate a base antireflective layer an infra-red reflecting layer a central antireflective layer an infra-red reflecting layer a top antireflective layer characterised in that the base antireflective layer comprises at least one layer comprising a nitride of aluminium;
whereineach of said infra-red reflecting layers comprise Ag as the main component and Pd in an amount of from 0.3 to 5.0 at % to Ag.
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4. A heat treatable glazing panel in accordance with claim 1, in which heat treatment of the heat treatable glazing panel to form the substantially haze free heat treated glazing panel provokes an increase of the value of TL of the glazing panel of at least 2.5%.
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5. A method of manufacturing a glazing panel having a haze of less than about 0.5 comprising the step of manufacturing a glazing panel in accordance with claim 1, to a heat treatment process at least 570°
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6. A heat treatable glazing panel in accordance with claim 1, wherein said Pd is present in said infra-red reflecting layer in an amount of from 0.3 to 2.0 at %.
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7. A heat treatable glazing panel in accordance with claim 1, wherein said Pd is present in said infra-red reflecting layer in an amount of from 0.3 to 1.0 at %.
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14. A substantially haze free glazing panel obtained by heat treating the heat treatable glazing panel of claim 1.
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15. A substantially haze free glazing panel obtained by heat treating the heat treatable glazing panel of claim 2.
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17. A substantially haze free glazing panel obtained by heat treating the heat treatable glazing panel of claim 4.
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18. A substantially haze free glazing panel obtained by heat treating the heat treatable glazing panel of claim 6.
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19. A substantially haze free glazing panel obtained by heat treating the heat treatable glazing panel of claim 7.
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3. A heat treatable glazing panel carrying a solar control coating stack comprising in sequence at least:
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a glass substrate a base antireflective layer an infra-red reflecting layer, and a top antireflective layer characterised in that the top antireflective layer comprises at least one layer comprising a nitride of aluminium having a geometrical thickness of less than 100 Å
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wherein the base antireflective layer comprises a first layer adjacent to the substrate comprising a nitride of aluminium and an overlying layer comprising a mixed oxide of zinc and aluminium having an atomic ratio Al/Zn of greater than or equal to 0.05 and less than or equal to 0.25. - View Dependent Claims (8, 9, 10, 11, 12, 16, 20, 21, 22, 23, 24)
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13. A heat treatable glazing panel carrying a coating stack comprising in sequence at least:
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a glass substrate a base antireflective layer an infra-red reflecting layer, and a top antireflective layer characterised in that the base antireflective layer comprises at least one layer comprising a nitride of aluminium, which is adjacent the glass substrate;
whereinsaid infra-red reflecting layer comprises Ag as the main component and Pd in an amount of from 0.3 to 5.0 at % to Ag. - View Dependent Claims (25)
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Specification
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Current AssigneeAsahi Glass Company, Limited (AGC, Inc.)
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Original AssigneeAsahi Glass Company, Limited (AGC, Inc.)
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InventorsDecroupet, Daniel, Aomine, Nobutaka, Takeda, Satoshi, Noda, Kazuyoshi, Ebisawa, Junichi
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Primary Examiner(s)Jones, Deborah
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Assistant Examiner(s)Blackwell-Rudasill, G. A.
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Application NumberUS09/881,762Publication NumberTime in Patent Office799 DaysField of Search428/426, 428/432-434, 428/688, 428/689, 428/698, 428/699, 428/701, 428/702, 522/045, 65/95, 359/359, 359/356US Class Current428/432CPC Class CodesC03C 17/36 at least one coating being ...C03C 17/3618 Coatings of type glass/inor...C03C 17/3626 one layer at least containi...C03C 17/3639 Multilayers containing at l...C03C 17/3642 the multilayer coating cont...C03C 17/3644 the metal being silverC03C 17/3652 the coating stack containin...C03C 17/366 Low-emissivity or solar con...C03C 17/3681 the multilayer coating bein...C03C 2217/73 Anti-reflective coatings wi...
