Composite pane with a capacitive switching zone

US10525673B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN GLASS FRANCE · FR

Inventors

• Patrick Weber · Alsdorf, DE
• Stefan Droste · Herzogenrath, DE

Key dates

• Filing date: Jan 15, 2016
• Grant date: Jan 7, 2020
• Expiry date: Jan 29, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K2217/960755
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A composite pane with a capacitive switching zone includes a substrate, a first intermediate layer areally bonded to the substrate, a second intermediate layer areally bonded to the first intermediate layer, and a cover pane areally bonded to the second intermediate layer. A carrier film with an electrically conductive layer is arranged between the first and second intermediate layers. A capacitive switching zone is electrically isolated from the electrically conductive layer by a coating-free separating line, the capacitive switching zone has a contact zone, a supply line zone, and a connection zone; the supply line zone electrically connects the contact zone to the connection zone, and the connection zone is electrically connectable to sensor electronics. The surface capacitance between the contact zone and the outside surface of the substrate is greater than the surface capacitance between the contact zone and the outside surface of the cover pane.