US 5,942,338 A · Coated articles

Abstract

Multilayer high transmittance, low emissivity coatings deposited over transparent substrates have improved mechanical durability, e.g. scratch resistance by the inclusion of at least one mechanical durability enhancing layer (hereinafter "MDE layer"). The MDE layer includes one or more pairs of a zinc oxide sublayer having deposited thereover a sublayer of an oxide of zinc and tin. In one embodiment of the present invention, the MDE layer is composed of two sublayers which includes a first sublayer of an oxide of zinc having deposited thereover a second sublayer of an oxide of zinc and tin. In another embodiment of the invention, the MDE layer is composed of four sublayers which includes a first sublayer of an oxide of zinc, having deposited thereover a second sublayer of an oxide of zinc and tin, having deposited thereover a third sublayer of an oxide of zinc, having deposited thereover a fourth sublayer of an oxide of zinc and tin. Coated articles having the MDE layer of the invention can be thermally processed for tempering, heat strengthening, annealing or bending without haze formation and can be manipulated prior to such thermal processing with little or no surface scratching appearing after such thermal processing.

Claims19

Dependent claims

A high transmittance, low emissivity mechanically durable coated article comprising:

a transparent, nonmetallic substrate;
a dielectric, antireflective base layer deposited over the substrate;
a metallic reflective layer deposited over the base layer;
a primer layer deposited over the metallic reflective layer;
and
a mechanical durability enhancing layer deposited over the primer layer, wherein the mechanical durability enhancing layer comprises at least two sublayers, wherein a first sublayer deposited over the primer layer includes an oxide of zinc and a second sublayer deposited over the first sublayer includes an oxide of zinc and tin.

3 more elements

A high transmittance, low emissivity mechanically durable coated article comprising:

a transparent, nonmetallic substrate;
a first dielectric, antireflective base layer deposited over the substrate,
a first metallic reflective layer deposited over the base layer;
a first primer layer deposited over the metallic reflective layer;
a second dielectric, antireflective base layer deposited over the first primer layer;
a second metallic reflective layer deposited over the second base layer;
a second primer layer deposited over the second metallic reflective film;
and
a dielectric, antireflective mechanical durability enhancing layer deposited over the second primer layer, wherein the mechanical durability enhancing layer includes at least two sublayers, wherein a first sublayer deposited over the second primer layer includes an oxide of zinc and a second sublayer deposited over the first sublayer includes an oxide of zinc and tin.

6 more elements

A high transmittance, low emissivity coated article with improved shelf life and enhanced mechanical durability comprising:

a transparent, nonmetallic substrate;
a first dielectric, antireflective base layer deposited over the substrate;
a first metallic reflective layer deposited over the first base layer;
a first primer layer deposited over the metallic reflective film;
a second dielectric, antireflective base layer deposited over the first primer layer, the second base layer including a crystalline metal-contacting film-part which is a zinc oxide film, and a support part, wherein the support part is further comprised of a first layer of a zinc oxide film in contact with the first primer layer and a second layer of a zinc stannate film in contact with the crystalline metal-contacting film part;
a second metallic reflective layer deposited over the crystalline metal-contacting film-part of the second base layer;
a second primer layer deposited over the second metallic reflective film;
and
a dielectric, antireflective mechanical durability enhancing layer deposited over the second primer layer, wherein the mechanical durability enhancing layer includes at least two sublayers, wherein a first sublayer deposited over the second primer layer includes an oxide of zinc and a second sublayer deposited over the first sublayer includes an oxide of zinc and tin.

6 more elements

Dependencies are inferred from the claim text.

Coated articles

Life of this patent

Coated articles

Life of this patent

Abstract

Claims19