Glazing unit

Patent metadata

Field	Value
Publication number	US-11803277-B2
Application number	US-201917272841-A
Country	US
Kind code	B2
Filing date	Jul 22, 2019
Priority date	Sep 3, 2018
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

A glazing unit of a vehicle or building, which has at least one glass pane or polymer film, wherein a capacitive sensor is arranged on a first surface of the or a glass pane or polymer film, which sensor includes a first sensor section and a second sensor section spaced at a distance therefrom on the first surface, which second sensor section acts as a signal readout section, wherein during operation of the sensor, an electrical field is generated between the first and second sensor section, which field partially penetrates the glass pane or polymer film, wherein a material property compensation electrode is provided on the second surface of the same glass pane or polymer film, opposite the second sensor section.

First claim

The invention claimed is:

1. A glazing unit of a vehicle or building, which has at least one glass pane or polymer film, wherein a capacitive sensor is arranged on a first surface of the glass pane or polymer film, which sensor comprises a first sensor section and a second sensor section spaced at a distance therefrom on the first surface, which second sensor section acts as a signal readout section, wherein during operation of the sensor, an electrical field is generated between the first and second sensor section, which field partially penetrates the glass pane or polymer film,
wherein a material property compensation electrode is provided locally on the second surface of the same glass pane or polymer film, opposite the second sensor section, and
wherein the glazing unit comprises a first connecting line that is connected to the first sensor section to apply a first potential to the first sensor section and a common second connecting line that is connected to both the second sensor section and the material property compensation electrode to apply a same second potential to both the second sensor section and the material property compensation electrode.

2. The glazing unit according to claim 1 , implemented as a composite glass pane, which has a first and second glass pane and a polymer film bonded therebetween, wherein the first and second sensor section are arranged on an inner surface of the first glass pane, adjacent the first surface of the polymer film, and the material property compensation electrode is arranged on an inner surface of the second glass pane, adjacent the second surface of the polymer film, or on an outer surface of the second glass pane.

3. The glazing unit according to claim 1 , implemented as a single-pane glazing unit, wherein the first and second sensor section are arranged on the first surface and the material property compensation electrode is arranged on the second surface of the single glass pane.

4. The glazing unit according to claim 1 , wherein the capacitive sensor is implemented as a moisture sensor for sensing moisture on the inside and/or the outside of the glazing unit or its respective environment.

5. The glazing unit according to claim 1 , wherein the capacitive sensor is implemented as a touch sensor for detecting touches or the application of pressure on the inside and/or the outside of the glazing unit.

6. The glazing unit according to claim 1 , wherein the first and second sensor section and/or the material property compensation electrode and the optionally provided first and second connecting line have a conductor structure printed or glued onto the respective surface of the glass pane or polymer film or onto a surface of another component adjacent thereto.

7. The glazing unit according to claim 6 , wherein the printed or glued-on conductor structure is transparent at least in sections.

8. A detection arrangement for capacitive detection of a physical variable on the inside and/or the outside of a vehicle window or building window or in its immediate environment, comprising:
a glazing unit according to claim 1 for forming the vehicle window or building window, and
a voltage supply unit connected to the second sensor section of the capacitive sensor and to the material property compensation electrode voltage supply unit, which is designed for applying the same potential to the second sensor section and to the material property compensation electrode, and
a readout and evaluation device for reading a capacitance signal from the second sensor section of the capacitive sensor and for processing the signal to determine a value of the physical variable,

wherein the readout and evaluation device is implemented to take into account a voltage signal originating from the material property compensation electrode.

9. A vehicle with a detection arrangement according to claim 8 .

Assignees

• Saint Gobain

Inventors

• Varga Gabor
• Klauss Bastian
• Zeiss Michael
• Effertz Christian

Classifications

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• B32B17/10036 Primary

  comprising two outer glass sheets · CPC title

• B32B17/10183

  being not continuous, e.g. in edge regions · CPC title

• B32B17/10761

  containing vinyl acetal · CPC title

• B60J1/001

  Double glazing for vehicles · CPC title