Composite pane comprising a functional inlay element

Patent metadata

Field	Value
Publication number	US-12447722-B2
Application number	US-202017440524-A
Country	US
Kind code	B2
Filing date	Mar 9, 2020
Priority date	Mar 19, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A composite pane includes a first pane and a second pane joined to one another via at least one thermoplastic intermediate layer and a functional inlay element arranged between the first pane and the second pane. The functional inlay element includes a carrier layer and at least one electrically conductive element.

First claim

The invention claimed is:

1. A composite pane, comprising:
a first pane and a second pane joined to one another via at least one thermoplastic intermediate layer and
a functional inlay element, at least comprising a carrier layer and at least one electrically conductive element arranged on said carrier layer,
wherein the functional inlay element is arranged between the first pane and the second pane,
wherein the carrier layer comprises a transparent substrate layer and an opaque layer, the transparent substrate layer and the opaque layer being arranged one atop the other and in contact with each other, and
wherein the transparent substrate layer and the opaque layer have the same external dimensions.

2. The composite pane according to claim 1 , wherein in the functional inlay element, the at least one electrically conductive element is arranged on the transparent substrate layer.

3. The composite pane according to claim 1 , wherein in the functional inlay element, the at least one electrically conductive element is arranged between the transparent substrate layer and the opaque layer.

4. The composite pane according to claim 1 , wherein the at least one electrically conductive element, independently of one another, is implemented as an electrically heatable element, a moisture sensor, a pressure sensor, an antenna, or a carrier for electronic lines and components.

5. The composite pane according to claim 1 , wherein the opaque layer has at least one cutout.

6. The composite pane according to claim 5 , wherein the at least one cutout is a sensor window for an optical sensor.

7. The composite pane according to claim 1 , wherein the at least one electrically conductive element is an electrically conductive coating, a carbon-containing layer, or a metallic layer, or contains or is made of an electrically conductive polymer.

8. The composite pane according to claim 1 , wherein the functional inlay element has at least two electrically conductive elements that are structured differently.

9. The composite pane according to claim 1 , wherein the opaque layer or the opaquely colored region of the transparent substrate layer is, at least in sections, transparent to infrared radiation with a wavelength in the range between 800 nm and 1100 nm.

10. The composite pane according to claim 1 , wherein the composite pane is a windshield that is mirror-symmetric along a center line, and the inlay element is arranged on the center line in the vicinity of the upper edge of the windshield.

11. The composite pane according to claim 1 , wherein the composite pane is a windshield of a motor vehicle.

12. A method for producing a composite pane according to claim 1 , the method comprising:
(a) providing the first pane, the second pane, the at least one thermoplastic intermediate layer and the functional inlay element, at least comprising the carrier layer and the at least one electrically conductive element;
(b) arranging the at least one thermoplastic intermediate layer and the functional inlay element between the first pane and the second pane; and
(c) joining the first pane to the second pane via the at least one thermoplastic intermediate layer by lamination.

13. A method comprising forming a vehicle pane with a composite pane according to claim 1 .

14. The composite pane according to claim 1 ,
wherein the transparent substrate layer comprises a thermoplastic or a thermosetting plastic or is a glass layer that has a thickness less than or equal to 0.5 mm.

15. A composite pane, comprising:
a first pane and a second pane joined to one another via at least one thermoplastic intermediate layer and
a functional inlay element, at least comprising a carrier layer and at least one electrically conductive element arranged on said carrier layer,
wherein the functional inlay element is arranged between the first pane and the second pane,
wherein the carrier layer comprises a transparent substrate layer and an opaque layer, the transparent substrate layer and the opaque layer being arranged one atop the other and in contact with each other,
wherein the opaque layer has at least one cutout, and
wherein an electrically conductive element implemented as an electrically heatable element is arranged in through-vision at least within a region of the cutout.

16. The method according to claim 13 , wherein the vehicle pane is a windshield of a motor vehicle.

17. The composite pane according to claim 15 , wherein in the functional inlay element, the at least one electrically conductive element is arranged on the transparent substrate layer.

18. The composite pane according to claim 15 , wherein in the functional inlay element, the at least one electrically conductive element is arranged between the transparent substrate layer and the opaque layer.

19. The composite pane according to claim 15 , wherein the at least one electrically conductive element, independently of one another, is implemented as an electrically heatable element, a moisture sensor, a pressure sensor, an antenna, or a carrier for electronic lines and components.

20. The composite pane according to claim 15 , wherein the at least one cutout is a sensor window for an optical sensor.

Assignees

• Saint Gobain
• Saint Gobain Sekurit France

Inventors

• Kolf Michael
• Wohlfeil Dirk
• Varga Gabor
• Matheisen Christopher

Classifications

• H01Q1/1271

  for mounting on windscreens · CPC title

• B60S1/026

  using electrical means · CPC title

• B60J1/002

  with means for clear vision, e.g. anti-frost or defog panes, rain shields (window heating in H05B3/84, H05B3/86) · CPC title

• B60J1/001

  Double glazing for vehicles · CPC title

• B32B2605/006

  Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings · CPC title