Patent ID: 7567183
Filing Date: 2009-07-28
Classification: B32B,B60H,B60J,B60S

Abstract:
1. A window assembly for a vehicle, the window assembly comprising: a multilayer polycarbonate panel of the vehicle; a sensor formed of a conductive ink printed onto the multilayer polycarbonate panel to form a plurality of traces and configured to sense environmental changes, wherein a first portion of the sensor is located on a first layer of the multilayer polycarbonate panel and a second portion of the sensor is located on a second layer of the multilayer polycarbonate panel, a first portion of the plurality traces forming a resistive element and a second portion of the plurality of traces forming a capacitive element, the resistive element and capacitive element being in parallel electrical connection, the resistive element and capacitive element forming a time constant and affecting a driving signal based on the time constant; a controller configured to sense the change in time constant to detect a change in the environmental conditions.