Heat-treatable coating having reduced haze
AssigneeVitro Flat Glass LLC
InventorsJessica Smith, Neil Curliss, Maryanne Griffin, Martin Bracamonte
Life of this patent
Estimating the term…
Abstract
A coated article includes a substrate with a first surface and a second surface and a functional coating applied over the surface. The functional coating includes a base layer over at least a portion of the substrate; a metallic layer over at least a portion of the base layer; and a top layer over at least a portion of the metallic layer. The base layer includes a first film of tin oxide over at least a portion of the substrate and a second film covering the entire portion of the first film. Methods of making a coated article, reducing scattering center formation, and reducing red haze formation are also provided.
Claims33
A heat-treated coated article comprising:
- a substrate comprising a first surface and second surface opposite the first surface;
- and
- a functional coating applied over at least a portion of the first surface, the functional coating comprising:
- a base layer over at least a portion of the first surface;
- a metallic layer over at least a portion of the base layer;
- and
- a top layer over at least a portion of the metallic layer,
- wherein the base layer comprises a first film comprising tin oxide in direct contact with the portion of the first surface and a second film comprising zinc covering the entire portion of the first film,
- wherein the heat-treated coated article comprises a red haze that is less than a red haze of a second heat-treated coated article comprising a base layer without a first film comprising tin oxide after heating, and
- wherein the tin oxide of the first film comprises at least 80 weight percent (wt. %) tin and at most 20 wt. % zinc oxide.
An insulated glass unit comprising:
- a first ply comprising a No. 1 surface and a No. 2 surface opposite the No. 1 surface;
- a second ply comprising a No. 3 surface and a No. 4 surface,
- wherein the second ply is spaced from the first ply, and
- wherein the first ply and second ply are connected together;
- and
- a heat-treated functional coating over at least a portion of the No. 2 surface or the No. 3 surface, the heat-treated functional coating comprising:
- a base layer over at least a portion of the No. 2 surface or the No. 3 surface;
- a metallic layer over at least a portion of the base layer;
- and
- a top layer over at least a portion of the metallic layer,
- wherein the base layer comprises a first film comprising tin oxide in direct contact with the portion of the No. 2 surface or the No. 3 surface and a second film comprising zinc covering the entire portion of the first film,
- wherein the first ply or the second ply comprising the heat-treated functional coating has a red haze that is less than a red haze of a first ply or second ply comprising a heat-treated functional coating comprising a base layer without a first film comprising tin oxide after heating, and
- wherein the tin oxide of the first film comprises at least 80 wt. % tin and at most 20 wt. % zinc oxide.
Dependencies are inferred from the claim text.