US 5,821,001 A · Coated articles

Abstract

Multilayer high transmittance, low emissivity coatings on transparent substrates feature a special antireflective base film of at least two parts on the substrate-near side of a metallic, reflective film. A first of the two parts is in contact with the metallic film. This first film-part has crystalline properties for causing the metallic film to deposit in a low resistivity configuration. The second of the two film-parts supports the first part and is preferably amorphous. Coated articles of the invention also feature, in combination with the above-mentioned base film or independently thereof, a newly discovered, particularly advantageous subrange of thicker primer films for coated glass that can be thermally processed for tempering, heat strengthening, or bending.

Claims38

Dependent claims

A high transmittance, low emissivity coated article comprising:

a. a transparent, nonmetallic substrate;
b. a dielectric, antireflective base film overlying the substrate, the base film including a zinc-tin oxide support film-part overlying the substrate and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc-aluminum oxide, zinc oxide and mixtures thereof overlying the support film-part;
c. a metallic reflective film deposited on the crystalline metal-contacting film-part of the base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
d. a primer film overlying the metallic reflective film;
and
e. a dielectric, antireflective film overlying the primer film;
wherein the metal-contacting film-part directs said metallic film to the lower of said two levels.

4 more elements

A high transmittance, low emissivity coated article comprising:

a. a transparent, nonmetallic substrate;
b. a first dielectric, antireflective base film overlying the substrate, the first base film including a zinc-tin oxide support film-part overlying the substrate and a crystalline metal-contacting film part selected from the group consisting of indium tin oxide, zinc-aluminum oxide and zinc oxide overlying the support film-part;
c. a first metallic reflective film deposited on the crystalline metal-contacting film-part of the first base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
d. a first primer film overlying the first metallic reflective film;
e. a second dielectric, antireflective base film overlying the first primer film, the second base film including a zinc-tin oxide support film-part overlying the first primer film and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc aluminum oxide and zinc oxide overlying the support film-part;
f. a second metallic reflective film deposited on the crystalline metal-contacting film-part of the second base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
g. a second primer film overlying the second metallic reflective film;
and
h. a dielectric, antireflective film overlying the second primer film;
wherein the metal-contacting film-part of the first base film directs the first metallic film to the lower of said two levels and the metal-contacting film-part of the second base film directs the second metallic film to the lower of said two levels.

7 more elements

A high transmittance, low emissivity coated article comprising:

a. a transparent, nonmetallic substrate;
b. a first dielectric, antireflective base film overlying the substrate, the first base film including a zinc-tin oxide support film-part overlying the substrate and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc-aluminum oxide and zinc oxide overlying the support film-part;
c. a first metallic reflective film deposited on the crystalline metal-contacting film-part of the first base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
d. a first primer film overlying the first metallic reflective film;
e. a second dielectric, antireflective base film overlying the first primer film, the second base film including a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc aluminum oxide and zinc oxide overlying a support film-part, wherein the support film-part is further comprised of a first layer of a zinc oxide film overlying the first primer film and a second layer of a zinc stannate film overlying the first layer of said support film-part;
f. a second metallic reflective film deposited on the crystalline metal-contacting film-part of the second base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
g. a second primer film overlying the second metallic reflective film;
and
h. a dielectric, antireflective film overlying the second primer film wherein the dielectric, antireflective film includes a first layer of a zinc oxide film overlying the primer film and a second layer of a zinc stannate film overlying the first zinc oxide layer of the dielectric, antireflective film;
wherein the metal-contacting film-part of the first base film directs the first metallic film to the lower of said two levels and the metal-contacting film-part of the second base film directs the second metallic film to the lower of said two levels.

7 more elements

A method for making a high transmittance, low emissivity coated article comprising the steps of:

a. selecting a transparent, nonmetallic substrate;
b. depositing a first dielectric, antireflective base film over the substrate, the first base film including a zinc-tin oxide support film-part overlying the substrate and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc aluminum oxide and zinc oxide overlying the support film-part;
c. depositing a first metallic reflective film on the crystalline metal-contacting film-part of the first base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
d. depositing a first primer film on the first metallic reflective film;
e. depositing a second dielectric, antireflective base film over the first primer film, the second base film including a zinc-tin oxide support film-part overlying the first primer film and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc-aluminum oxide and zinc oxide overlying the support film-part;
f. depositing a second metallic reflective film on the crystalline metal-contacting film-part of the second base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
g. depositing a second primer film over the second metallic reflective film;
and
h. depositing a dielectric, antireflective film over the second primer film;
wherein the metal-contacting film-part of the first base film directs the first metallic film to the lower of said two levels and the metal-contacting film-part of the second base film directs the second metallic film to the lower of said two levels.

7 more elements

A method for making a high transmittance, low emissivity coated article comprising the steps of:

a. selecting a transparent, nonmetallic substrate;
b. depositing a first dielectric, antireflective base film over the substrate, the first base film including a zinc-tin oxide support film-part overlying the substrate and a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc-aluminum oxide and zinc oxide overlying the support film part;
c. depositing a first metallic reflective film on the crystalline metal-contacting film-part of the first base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
d. depositing a first primer film over the first metallic reflective film;
e. depositing a second dielectric, antireflective base film over the first primer film, the second dielectric antireflective base film including a crystalline metal-contacting film-part selected from the group consisting of indium tin oxide, zinc-aluminum oxide and zinc oxide overlying a support film-part, wherein the support film-part is further comprised of a first layer of a zinc oxide film overlying the first primer film and a second layer of a zinc stannate film overlying the first layer of said support film-part;
f. depositing a second metallic reflective film on the crystalline metal-contacting film-part of the second base film, the metallic film having two levels of electrical resistivity, one level being lower than the other;
g. depositing a second primer film over the second metallic reflective film;
and
h. depositing a dielectric, antireflective film over the second primer film wherein the dielectric, antireflective film includes a first layer of a zinc oxide film deposited over the primer film and a second layer of a zinc stannate film deposited on the first zinc oxide layer of the dielectric, antireflective film;
wherein the metal-contacting film-part of the first base film directs the first metallic film to the lower of said two levels and the metal-contacting film-part of the second base film directs the second metallic film to the lower of said two levels.

7 more elements

Dependencies are inferred from the claim text.

Coated articles

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Coated articles

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Abstract

Claims38