Coated article having ceramic paint modified surface(s), and/or associated methods

Patent metadata

Field	Value
Publication number	US-10472274-B2
Application number	US-201715651479-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Jul 17, 2017
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

Certain example embodiments relate to heating a ceramic paint applied to a portion of a coated article in order to at least partially “eat through” the underlying coating, with any remaining materials being removable by washing, and associated articles. In certain example embodiments, the coatings are multilayer sputter-deposited coatings formed on a glass or other substrate. The heat may be provided in connection with conventional heat treatment (e.g., thermal tempering) and/or heat bending processes that otherwise would be performed on the coated article.

First claim

What is claimed is:

1. A method of making a coated article including a sputter-deposited coating supported by a glass substrate, the method comprising:
applying a coating-dissolving material comprising ceramic paint over and contacting the sputter-deposited coating in one or more areas in which the sputter-deposited coating is to be removed, wherein the ceramic paint comprises oxides of phosphorous and sodium;
heating the glass substrate with the coating-dissolving material comprising ceramic paint applied over and contacting the sputter-deposited coating at a temperature of 580-650 degrees C. for no more than 10 minutes, the heating causing the sputter-deposited coating under the coating-dissolving material to be at least partially damaged in the one or more areas in which the sputter-deposited coating is to be removed but not causing undesired damage to the sputter-deposited coating in other areas; and
following the heating, washing the glass substrate to remove excess material(s) from the glass substrate in the one or more areas in which the sputter-deposited coating is to be removed, in making the coated article,
wherein the coating comprises a plurality of dielectric layers.

2. The method of claim 1 , wherein the sputter-deposited coating is a multilayer silver-inclusive low-emissivity coating comprising at least first and second Ag-based layers, a first set of dielectric layers being located between the first Ag-based layer and the substrate, a second set of dielectric layers being located between the first and second Ag-based layers, and a third set of dielectric layers being located over the second Ag-based layer; and
wherein the first, second, and third sets of dielectric layers differ from one another in terms of number and/or types of layers therein.

3. The method of claim 1 , wherein the sputter-deposited coating is an antireflective coating.

4. The method of claim 1 , wherein the sputter-deposited coating blocks and/or reflects UV light.

5. The method of claim 1 , wherein the one or more areas in which the sputter-deposited coating is to be removed include peripheral edges of the glass substrate.

6. The method of claim 1 , wherein the one or more areas in which the sputter-deposited coating is to be removed at least partially define one or more electrically isolating regions of the glass substrate.

7. The method of claim 1 , wherein the heating is performed in connection with bending of the glass substrate.

8. The method of claim 1 , wherein the coating is non-conductive and lacks any layers comprising ITO.

9. The method of claim 1 , wherein the heating is performed in connection with thermal tempering of the glass substrate.

Assignees

• Guardian Europe Sarl

Inventors

• Greiner Ralf
• Olbrich Mario
• Knolle Sabine
• Kriltz Uwe

Classifications

• C03C2218/328

  Partly or completely removing a coating · CPC title

• C03C17/36 Primary

  at least one coating being a metal · CPC title

• C03C2218/34

  Masking · CPC title

• C03C2218/156

  by magnetron sputtering · CPC title

• C09K13/00

  Etching, surface-brightening or pickling compositions (for glass C03C15/00, {C03C25/66; for mortars, concrete, artificial or natural stone or ceramics C04B41/5338}; for metallic material C23F, C23G1/00, C25F1/00; {for semi-conductors H10P52/40}) · CPC title