Anti-solar and low emissivity functioning multi-layer coatings on transparent substrates

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer
• wherein the first anti-reflection layer of dielectric material is tungsten oxide.
• the first anti-reflection layer of tungsten oxide and the second anti-reflection layer of tungsten oxide each has a substantially uniform thickness from 300.ANG. to 450.ANG., and
• the thickness of the first anti-reflection layer of tungsten oxide is from 6% to 12% less than the thickness of the second anti-reflection layer of tungsten oxide.

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer,
• wherein the first anti-reflection layer is WO.sub.x, where x is from 2.5 to 2.99 and the second anti-reflection layer is WO.sub.3.

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer,
• wherein the first anti-reflection layer is WO.sub.x and the second anti-reflection layer is WO.sub.x,
• where x is independently in each instance from 2.5 to 2.99.

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer
• wherein the first anti-reflection layer is WO.sub.3 and the second anti-reflection layer is WO.sub.x, where x is from 2.5 to 2.99.

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer, and inner buffer layer positioned between the first anti-reflection layer and the infra-red reflective layer of silver metal.

A coated article of manufacture comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer,
• a second infra-red reflective layer of silver metal overlying the second anti-reflection layer of tungsten oxide,
• a second buffer layer directly overlying the second infra-red reflective layer of silver metal, and
• a third anti-reflection layer of tungsten oxide overlying the second buffer layer.

A glazing unit having normal emissivity not greater than 0.01 and comprising a substantially transparent substrate with a substantially transparent coating on a surface of the substrate, the substantially transparent coating comprising:

• a first anti-reflection layer of dielectric material,
• an infra-red reflective layer of silver metal overlying the anti-reflection dielectric layer,
• a buffer layer directly overlying the infra-red reflective layer of silver metal, and
• a second anti-reflection layer of tungsten oxide overlying the buffer layer.

A method of manufacturing a coated article comprising:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by:
• A) depositing a first anti-reflection layer of dielectric material,
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer,
• C) subsequently depositing a buffer layer directly onto the infra-red reflective layer, wherein the buffer layer comprises material selected from silica, silicon, silicon nitride and tungsten nitride materials, and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer.

A method of manufacturing a coated article comprising:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by:
• A) depositing a first anti-reflection layer of dielectric material,
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer,
• C) subsequently depositing a buffer layer directly onto the infra-red reflective layer, and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer,
• wherein the step of depositing the buffer layer comprises sputtering silicon from a doped silicon target in a non-reactive atmosphere directly onto the infra-red reflective layer.

A method of manufacturing a coated article comprising:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by:
• A) depositing a first anti-reflection layer of dielectric material,
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer,
• C) subsequently depositing a buffer layer directly onto the infra-red reflective layer, and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer,
• and further comprising, between step (A) and step (B), the step of depositing an inner buffer layer over the first anti-reflection layer.

A method of manufacturing a coated article comprising:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by:
• A) depositing a first anti-reflection layer of dielectric material,
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer,
• C) subsequently depositing a buffer layer directly onto the infra-red reflective layer, and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer,
• and further comprising, prior to step (A), the step of depositing a color control layer over the surface of the substrate.

A method of manufacturing a coated article comprising:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by:
• A) depositing a first anti-reflection layer of dielectric material,
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer,
• C) subsequently depositing a buffer layer directly onto the infra-red reflective layer, and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer,
• and further comprising, subsequent to step (D), the steps of:
• depositing tungsten oxide onto the second anti-reflection layer;
• subsequently depositing silver metal to form a second infra-red reflective layer;
• subsequently depositing a second buffer layer directly overlying the second infra-red reflective layer;
• and
• subsequently depositing a third anti-reflection layer of tungsten oxide over the second buffer layer.

A method of manufacturing a coated article comprising the steps of:

• providing a substantially transparent substrate;
• and
• forming a substantially transparent coating on a surface of the substrate by passing the substrate through a multi-station sputtering chamber, with continuous travel of the substrate through the chamber from station to station, including:
• A) depositing a first anti-reflection-layer of tungsten oxide directly onto the surface of the substrate by sputtering tungsten metal in an atmosphere comprising oxygen at a first station of the multi-station chamber;
• B) subsequently depositing silver metal over the anti-reflection dielectric layer to form an anti-reflection layer by sputtering silver metal in a substantially inert atmosphere at a subsequent station of the multi-station chamber;
• C) subsequently depositing-a buffer layer directly onto the infra-red reflective layer by sputtering silicon in a substantially inert atmosphere at a subsequent station of the multi-station chamber;
• and
• D) subsequently depositing tungsten oxide over the buffer layer to form a second anti-reflection layer by sputtering tungsten metal in an atmosphere comprising oxygen at a subsequent station of the multi-station chamber.