US Patent No. 10,694,587

ELECTRICALLY HEATABLE COMPOSITE PANE HAVING A CAPACITIVE SWITCHING REGION


Patent No. 10,694,587
Issue Date June 23, 2020
Title Electrically Heatable Composite Pane Having A Capacitive Switching Region
Inventorship Marcel Klein, Baesweiler (DE)
Dirk Doerner, Aachen (DE)
Assignee SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)

Claim of US Patent No. 10,694,587

1. A heatable composite pane having a capacitive switching region, comprising:a substrate and a cover pane;
at least one intermediate layer, arranged between the substrate and the cover pane; and
at least one heating wire and at least two busbars, arranged between the cover pane and the intermediate layer, wherein the heating wire is electrically connected to the at least two busbars in a conducting manner, such that upon application of an electrical voltage to the at least two busbars, a heating current flows through the heating wire, whereby the heating wire is heated,
wherein an electrically conductive contact wire, different from the at least one heating wire, is arranged between the substrate and the intermediate layer or between the cover pane and the intermediate layer,
wherein at least one region of the electrically conductive contact wire forms a capacitive switching region,
wherein the capacitive switching region has at least one contact region and one connection region, the contact region is electrically connected to the connection region, and the connection region is configured to be electrically connected to a sensor electronics system, and
wherein the contact wire is galvanically connected to one of the at least two busbars at precisely one connection region.