Transparent pane with heatable coating

• US 10,009,958 B2
• Filed: 03/05/2015
• Issued: 06/26/2018
• Est. Priority Date: 04/17/2014
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Dimitrijevic, Bojan, Schulz, Valentin, Schall, Guenther
• Primary Examiner(s): STAPLETON, ERIC S
• Application Number:
  US15/301,354
• Publication Number:
  US 20170118803A1
• Time in Patent Office: 1,209 Days
• Field of Search: 219522
• CPC Class Codes: B05D 1/28 performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: H05B 2203/008 with layout including a portion free of resistive material, e.g. communication window
• CPC Class Codes: H05B 2203/011 Heaters using laterally extending conductive material as connecting means
• CPC Class Codes: H05B 2203/013 Heaters using resistive films or coatings
• CPC Class Codes: H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
• CPC Class Codes: H05B 3/86 the heating conductors being embedded in the transparent or reflecting material H05B3/845 takes precedence

Abstract

A transparent pane having an electrically heatable coating and at least one coating-free zone that can be used, for example, as a communication window, is disclosed. The electrically heatable coating is connected to two collecting electrodes, such that a supply voltage applied to the electrodes generates a heating current that flows via a heating field formed between the collecting electrodes, the heating field containing the coating-free zone whose zone-edge is formed, at least in sections, by the heatable coating. Other implementation details include subdivision of one of the two collecting electrodes into separated subregions, each connected, via an electrical supply line, to an additional electrode. In one case, the electrical supply line runs, at least in sections, in the coating-free zone, in a coating-free edge strip, in a subregion of the coating outside the heating field, and/or in the zone-edge. Methods for producing the transparent pane are also disclosed.

Claims

1. A transparent pane, comprising:

at least one electrically heatable coating connected to at least two collecting electrodes configured to establish an electrical connection to two poles of a voltage source, so that an applied supply voltage of the voltage source causes a heating current to flow via a heating field formed between the two collecting electrodes, wherein the heating field contains at least one coating-free zone bordered by a zone edge of the coating-free zone, the zone edge being formed, at least in sections, by the heatable coating,

wherein at least one of the two collecting electrodes is subdivided into at least two subregions separated from one another,

wherein at least one electrical supply line, of at least two electrical supply lines, is guided from each of the at least two subregions to at least one additional electrode,

wherein the at least one electrical supply line runs, at least in sections,

i) in the at least one coating-free zone, and/or

ii) in a coating-free edge strip of the transparent pane, and/or

iii) in at least one subregion of the heatable coating outside the heating field, and/or

iv) at and/or in the zone edge of the at least one coating-free zone formed by the coating, and

wherein

a) the at least one additional electrode is electrically connected to ends of the at least two electrical supply lines and to a heating field section of the heating field between the two collecting electrodes, and/or

b) the at least one additional electrode is subdivided into at least two subregions separated from one another, wherein each of the at least two subregions is electrically connected to, in each case, one end of a respective at least one electrical supply line of the at least two electrical supply lines as well as to the heating field section of the heating field between the two collecting electrodes.

2. The transparent pane according to claim 1, wherein each of the at least two subregions of at least one of the two collecting electrodes is electrically connected via at least one flat conductor to a voltage source.

3. The transparent pane according to claim 2, wherein each of the at least two subregions is connected via at least one flat conductor to a common voltage source.

4. The transparent pane according to claim 1 wherein the at least one additional electrode and/or at least one subregion of the at least one additional electrode has at least two connection sections, which extend into the heating field section of the heating field, between the at least one additional electrode and/or its at least two subregions, and at least one collecting electrode of the two collecting electrodes.

5. The transparent pane according to claim 1, wherein the at least one electrical supply line is arranged predominantly or entirely in the coating-free edge strip and/or the coating-free zone.

6. The transparent pane according to claim 1, wherein the at least two electrical supply lines are guided in sections through the at least two subregions of the coating outside the heating field.

7. The transparent pane according to claim 1, wherein the at least two electrical supply lines are guided in sections through an upper region of the coating-free zone in an installed state of the transparent pane.

8. The transparent pane according to claim 1, wherein the at least two electrical supply lines extend in sections along lateral zone edges of the at least one coating-free zone in an installed state of the transparent pane.

9. The transparent pane according to claim 1, wherein the at least one additional electrode, and/or each of its at least two subregions, extends along a lower zone edge in an installed state of the transparent pane.

10. The transparent pane according to claim 1, wherein the at least two subregions are electrically conductively connected via at least one connecting part to at least one flat conductor connected to a voltage source, and wherein the at least one flat conductor and the at least one connecting part are electrically isolated from the at least two electrical supply lines.

11. The transparent pane according to claim 10, wherein the at least two subregions are electrically conductively connected via a common connecting part to the flat conductor.

12. The transparent pane according to claim 10, wherein electrical isolation between, the at least one flat conductor and the at least one connecting part, and the at least two electrical supply lines is accomplished by means of an electrically insulating layer.

13. A method for producing a transparent pane, the method comprising the following process steps:

A) producing an electrically heatable coating,

B) producing at least one coating-free zone in the electrically heatable coating and in a heating field of the electrically heatable coating,

C) forming at least two collecting electrodes provided for connection to two terminals of a voltage source, the at least two collecting electrodes being electrically connected to the electrically heatable coating so that by applying a supply voltage through the voltage source, a heating current flows via a heating field situated between the at least two collecting electrodes, wherein at least one of the two collecting electrodes is subdivided into at least two subregions separated from one another,

D) producing at least one additional electrode provided for electrically connecting to at least one of the two collecting electrodes and/or at least two subregions, separated from one another, of the at least one additional electrode, and

E) producing at least two electrical supply lines, which connect the at least one additional electrode and/or, in each case, one of its at least two subregions electrically to, in each case, at least one of the at least two subregions, separated from one another, of at least one of the collecting electrodes,

wherein at least one of the at least two electrical supply lines is produced running, at least in sections,

i) in the at least one coating-free zone, and/or

ii) in the coating-free edge strip, and/or

iii) in at least one subregion of the coating outside the heating field, and/or

iv) at and/or in the zone edge, formed by the coating, of the at least one coating-free zone.

14. The method according to claim 13, wherein the process steps (C, (D, and (E can be performed simultaneously using a screen printing method.

15. The method according to claim 13, further comprising applying the transparent pane to a functional and/or decorative individual piece and as a built-in component in furniture, devices, buildings, and means of transportation.