RF interference reduction for functional glazings
First Claim
1. Automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material, the plies of interlayer material being laminated between a first ply of glazing material facing out of the vehicle and a second ply of glazing material facing into the vehicle, is fitted, the switchable film comprising first and second electrodes, both in electrical connection with a power supply, wherein the first electrode is capacitively connected to electrical ground on the vehicle body, wherein the capacitive connection comprises a capacitor formed from the first electrode and an electrically conductive element, and wherein the electrically conductive element comprises at least one of a functional coating on a portion of one surface of at least one ply of glazing material, a ply of polymer material having a functional infrared coating that is laminated between the switchable film and the first ply of glazing material, a busbar connected to a non-electrically conducting surface of the first electrode, and a part of the vehicle body that extends into the aperture to overlap the first electrode.
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Accused Products
Abstract
An automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material is fitted is disclosed. The plies of interlayer material are laminated between a first ply of glazing material, preferably glass, facing out of the vehicle and a second ply of glazing material, preferably glass, facing into the vehicle. The switchable film comprises first and second electrodes, both in electrical connection with a power supply. The first electrode is capacitively connected to electrical ground on the vehicle body.
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Citations
29 Claims
- 1. Automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material, the plies of interlayer material being laminated between a first ply of glazing material facing out of the vehicle and a second ply of glazing material facing into the vehicle, is fitted, the switchable film comprising first and second electrodes, both in electrical connection with a power supply, wherein the first electrode is capacitively connected to electrical ground on the vehicle body, wherein the capacitive connection comprises a capacitor formed from the first electrode and an electrically conductive element, and wherein the electrically conductive element comprises at least one of a functional coating on a portion of one surface of at least one ply of glazing material, a ply of polymer material having a functional infrared coating that is laminated between the switchable film and the first ply of glazing material, a busbar connected to a non-electrically conducting surface of the first electrode, and a part of the vehicle body that extends into the aperture to overlap the first electrode.
- 17. An automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material, the plies of interlayer material being laminated between a first ply of glazing material facing out of the vehicle and a second ply of glazing material facing into the vehicle, is fitted, the switchable film comprising first and second electrodes, both in electrical connection with a power supply, wherein the first electrode is capacitively connected to electrical ground on the vehicle body, wherein at least one ply of glazing material has a functional coating on a portion of one surface, wherein the laminated glazing comprises at least one layer of interlayer material interposed between the first electrode and the functional coating, wherein the functional coating is provided with a busbar, wherein the busbar is connected to electrical ground on the vehicle body, and wherein the first electrode and the functional coating form a capacitor.
- 21. An automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material, the plies of interlayer material being laminated between a first ply of glazing material facing out of the vehicle and a second ply of glazing material facing into the vehicle, is fitted, the switchable film comprising first and second electrodes, both in electrical connection with a power supply, wherein the first electrode is capacitively connected to electrical ground on the vehicle body, and wherein the first electrode overlaps the edges of the aperture in the vehicle body.
- 25. An automotive vehicle having an aperture in the vehicle body in which a glazing, comprising a switchable film laminated between at least two plies of an interlayer material, the plies of interlayer material being laminated between a first ply of glazing material facing out of the vehicle and a second ply of glazing material facing into the vehicle, is fitted, the switchable film comprising first and second electrodes, both in electrical connection with a power supply, wherein the first electrode is capacitively connected to electrical ground on the vehicle body, and wherein the switchable film is provided with first and second busbars connected to the first and second electrodes, and a third busbar, connected to a non-electrically conductive surface of the first or second electrode, forming a capacitor.
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28. A method of reducing interference in radio frequency signals caused by glazings comprising switchable films, the switchable film comprising first and second electrodes in electrical connection with a power supply, comprising connecting at least the first electrode capacitively to electrical ground, wherein the capacitive connection comprises a capacitor formed from the first electrode and an electrically conductive element, and wherein the electrically conductive element comprises at least one of a functional coating on a portion of one surface of at least one ply of glazing material, a ply of polymer material having a functional infrared coating that is laminated between the switchable film and a ply of glazing material, a busbar connected to a non-electrically conducting surface of the first electrode, and a part of a vehicle body that extends into an aperture to overlap the first electrode.
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29. A method of reducing interference in radio frequency signals caused by vehicle glazings comprising liquid crystal device type or suspended particle device type switchable films, the switchable films comprising first and second electrodes in electrical connection with a power supply, the method comprising connecting at least the first electrode capacitively to electrical ground, wherein the capacitive connection comprises a capacitor formed from the first electrode and an electrically conductive element, and wherein the electrically conductive element comprises at least one of a functional coating on a portion of one surface of at least one ply of glazing material, a ply of polymer material having a functional infrared coating that is laminated between the switchable film and a ply of glazing material, a busbar connected to a non-electrically conducting surface of the first electrode, and a part of a vehicle body that extends into an aperture to overlap the first electrode.
Specification