Dual zone bus bar arrangement for heatable vehicle window

摘要

A bus bar arrangement for a heatable vehicle window. An electroconductive coating is divided into two separate coating portions which represent two different respective heating zones. A single bottom bus bar is common to both heating zones, while a first upper/top bus bar portion is provided for the first heating zone and a different second upper/top bus bar portion is provided for the second heating zone. The two upper/top bus bars are spaced apart and electrically insulated from one another. Conductive bus bar extension portions lead from the respective upper bus bars down to a bottom edge of the window (e.g., vehicle windshield) so that electrical connectors for all three bus bars can be located along or proximate a single edge of the window.