| 主权项 |
1. A transparent pane comprising:
an electrically heatable coating electrically connected to at least two first electrodes provided for electrical connection to two terminals of a voltage source such that by applying a feed voltage, a heating current flows over a heating field formed between the at least two first electrodes, wherein the heating field includes at least one coating-free zone, which is bounded by a zone edge formed by the electrically heatable coating, characterized by at least one second electrode provided for electrical connection to one of the two terminals of the voltage source, the at least one second electrode having at least one supply tract disposed at least partially in the at least one coating-free zone and at least one electrode trace connected to the at least one supply tract, and wherein the at least one electrode trace extends starting from the at least one coating-free zone, beyond an edge of the zone edge, the edge being formed by a part of the heating field that is situated between the at least one coating-free zone and the at least two first electrodes provided for connection to a second one of the two terminals of the voltage source, wherein: the at least one second electrode has a resistance such that upon applying the feed voltage, the heating current flowing through the heating field has an at least approximately homogeneous current density distribution, and a length of the at least one supply tract is dimensioned such that the second electrode has a predefinable electric resistance, the electric resistance being equivalent to the sheet resistance of the heatable coating in a surface area that corresponds to the at least one coating-free zone. |
