Coated pane with partially de-coated regions

Patent metadata

Field	Value
Publication number	US-9873169-B2
Application number	US-201414773009-A
Country	US
Kind code	B2
Filing date	Jan 20, 2014
Priority date	Mar 7, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A coated pane with a communication window includes a base pane, a metal-containing coating on the base pane, a grid area made of intersecting, de-coated inner gridlines in the metal-containing coating, wherein the grid area has a grid area edge, and the grid area edge has intersecting outer gridlines, wherein the outer gridlines have interruptions increasing in size from the outer edge of the grid area all the way to the end of the grid surface edge.

First claim

The invention claimed is:

1. Coated pane with a communication window comprising:
a base pane;
a metal-containing coating on the base pane;
a grid area made of intersecting, de-coated inner gridlines in the metal-containing coating having no interruptions, wherein the grid area is surrounded completely or partially by a grid area edge, said grid area being delimited by an outermost grid line, wherein
the grid area edge has intersecting outer gridlines, wherein the outer gridlines have interruptions increasing in size from the outermost grid line of the grid area all the way to an end of the grid area edge.

2. Coated pane according to claim 1 , wherein the outer gridlines are extensions of the inner gridlines.

3. Coated pane according to claim 2 , wherein the outer gridlines further include gridlines that are arranged parallel to the outermost grid line bordering the grid area.

4. Coated pane according to claim 1 , wherein the inner and/or outer gridlines have a width from 30 μm to 200 μm.

5. Coated pane according to claim 4 , wherein the inner and/or outer gridlines have a width from 70 μm to 120 μm.

6. Coated pane according to claim 1 , wherein the inner and/or outer gridlines form squares, rhombuses, parallelograms, and/or rectangles.

7. Coated pane according to claim 1 , wherein the inner and/or outer gridlines are from 0.1 mm to 15 mm apart.

8. Coated pane according to claim 7 , wherein the inner and/or outer gridlines are from 0.7 mm to 3 mm apart.

9. Coated pane according to claim 1 , wherein the grid area edge has a width from 1 mm to 30 mm.

10. Coated pane according to claim 1 , wherein the base pane comprises float glass.

11. Coated pane according to claim 10 , wherein the inner gridlines and the outer gridlines have an angle of 30° to 60° relative to the float glass production direction of the base pane.

12. Windshield comprising a coated pane according to claim 1 .

13. Method for producing a coated pane with a communication window, comprising:
providing a base pane with a metal-containing coating,
de-coating the metal-containing coating locally with a laser in gridlines to obtain a grid area made of intersecting, de-coated inner gridlines in the metal-containing coating having no interruptions and a grid area edge surrounding completely or partially the grid area, said grid area being delimited by an outermost grid line, wherein
outer gridlines of the grid area edge have interruptions increasing in size from the outermost grid line of the grid area all the way to an end of the grid area edge, and
bending the base pane.

14. Method according to claim 13 , wherein the laser is guided at a speed from 0.100 m/sec to 10 m/sec along the metal-containing coating.

15. Method according to claim 13 , wherein the laser comprises a carbon dioxide, YAG, Nd-YAG, or diode laser.

16. Method according to claim 15 , wherein the laser has an output from 0.001 kW to 10 kW.

17. Method according to claim 13 , wherein the laser is guided by a plotter.

Assignees

• Saint Gobain

Inventors

• Arslan Ilkay
• Behmke Michael
• Droste Stefan
• Von Der Weiden Ingo
• Wohlfeil Dirk

Classifications

• C03C2218/328

  Partly or completely removing a coating · CPC title

• B23K26/362 Primary

  Laser etching · CPC title

• B23K2103/10

  Aluminium or alloys thereof · CPC title

• B23K26/361

  for deburring or mechanical trimming (B23K26/351 takes precedence) · CPC title

• B23K2103/50

  Inorganic materials other than metals or composite materials · CPC title