Heatable composite pane having a safety function
First Claim
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1. A composite pane, comprising:
- a first pane, at least one intermediate layer, and second pane;
a transparent, electrically conductive first coating between the at least one intermediate layer and the first pane and/or between the at least one intermediate layer and the second pane;
a first busbar and a second busbar connected to the transparent, electrically conductive first coating, the first busbar being adapted for connection to a ground potential and the second busbar being adapted for connection to a DC voltage or an AC voltage; and
a transparent, electrically conductive second coating that is connected via at least one third busbar to the ground potential,wherein an area of the transparent, electrically conductive first coating and an area of the transparent, electrically conductive second coating are arranged one over another and insulated from each other,andwherein the transparent, electrically conductive second coating has an emissivity of less than 50% that is provided by a layer system that includes;
i) at least one functional layer based on at least one metal from the group, consisting of niobium, tantalum, and zirconium, andii) a dielectric layer configured to be arranged on a vehicle interior side of the at least one functional layer.
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Abstract
A composite pane is described. The composite pane has a first pane, at least one intermediate layer, a second pane, a transparent, electrically conductive first coating between the intermediate layer and the first pane and/or between the intermediate layer and the second pane, a first busbar and a second busbar, and a transparent, electrically conductive second coating.
21 Citations
20 Claims
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1. A composite pane, comprising:
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a first pane, at least one intermediate layer, and second pane; a transparent, electrically conductive first coating between the at least one intermediate layer and the first pane and/or between the at least one intermediate layer and the second pane; a first busbar and a second busbar connected to the transparent, electrically conductive first coating, the first busbar being adapted for connection to a ground potential and the second busbar being adapted for connection to a DC voltage or an AC voltage; and a transparent, electrically conductive second coating that is connected via at least one third busbar to the ground potential, wherein an area of the transparent, electrically conductive first coating and an area of the transparent, electrically conductive second coating are arranged one over another and insulated from each other, and wherein the transparent, electrically conductive second coating has an emissivity of less than 50% that is provided by a layer system that includes; i) at least one functional layer based on at least one metal from the group, consisting of niobium, tantalum, and zirconium, and ii) a dielectric layer configured to be arranged on a vehicle interior side of the at least one functional layer. - View Dependent Claims (2, 3, 4)
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5. A composite pane, comprising:
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a first pane, at least one intermediate layer, and second pane; a transparent, electrically conductive first coating between the at least one intermediate layer and the first pane and/or between the at least one intermediate layer and the second pane; a first busbar and a second busbar connected to the transparent, electrically conductive first coating, the first busbar adapted for connection to a ground potential and the second busbar adapted for connection to a DC voltage or an AC voltage; a transparent, electrically conductive second coating that is connected via at least one third busbar to the ground potential, wherein an area of the transparent, electrically conductive first coating and an area of the transparent, electrically conductive second coating are arranged one over another with a protrusion of the area of the second coating beyond the area of the first coating by at least 10% and insulated from each other, and wherein the transparent, electrically conductive second coating has an emissivity, and comprises a layer system having at least one functional layer based on at least one metal from the group, consisting of niobium, tantalum, and zirconium. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for producing the composite pane, the method comprising:
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laminating a first pane, an intermediate layer, a second pane, at least one transparent, electrically conductive first coating, at least one transparent, electrically conductive second coating, a first busbar, a second busbar, and a third busbar to each other; connecting the at least one transparent, electrically conductive first coating to the first busbar; connecting the at least one transparent, electrically conductive second coating via the third busbar to a ground potential; and connecting the at least one transparent, electrically conductive first coating via the second busbar to a DC voltage of 75 V to 450 V or an AC voltage of 25 V to 450 V, wherein an area of the transparent, electrically conductive first coating and an area of the transparent, electrically conductive second coating are arranged one over another and insulated from each other, and wherein the transparent, electrically conductive second coating has an emissivity of less than 50% that is provided by a layer system that includes; i) at least one functional layer based on at least one metal from the group, consisting of niobium, tantalum, and zirconium, and ii) a dielectric layer configured to be arranged on a vehicle interior side of the at least one functional layer.
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20. A method for producing the composite pane, the method comprising:
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laminating a first pane, an intermediate layer, a second pane, at least one transparent, electrically conductive first coating, at least one transparent, electrically conductive second coating, a first busbar, a second busbar, and a third busbar to each other; connecting the at least one transparent, electrically conductive first coating to the first busbar; connecting the at least one transparent, electrically conductive second coating via the third busbar to a ground potential; and connecting the at least one transparent, electrically conductive first coating via the second busbar to a DC voltage of 75 V to 450 V or an AC voltage of 25 V to 450 V, wherein an area of the transparent, electrically conductive first coating and an area of the transparent, electrically conductive second coating are arranged one over another with a protrusion of the area of the second coating beyond the area of the first coating by at least 10% and insulated from each other, and wherein the transparent, electrically conductive second coating has emissivity, and comprises a layer system having at least one functional layer based on at least one metal from the group, consisting of niobium, tantalum, and zirconium.
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Specification