Touch sensor arrays with integrated inter-layer contacts

A touch sensor panel, comprising:

• a substrate;
• one or more conductive interconnect lines formed on the substrate from at least one of a patterned upper conductive ink layer and a patterned lower conductive ink layer;
• and
• a layer of insulator;
• wherein some of the layer of insulator is interposed between the patterned upper conductive ink layer and the substrate, and some of the layer of insulator is interposed between the patterned upper conductive ink layer and the patterned lower conductive ink layer;
• wherein at least one of the conductive interconnect lines includes patterned lower and upper conductive ink layers electrically connected at a contact region, an upper line segment formed from the patterned upper conductive ink layer and a lower line segment formed from the patterned lower conductive ink layer having widths at the contact region that are substantially the same width as at least a portion of the patterned upper conductive ink layer outside the contact region;
• and
• wherein the patterned lower conductive ink layer of at least one of the conductive interconnect lines having electrically connected first and second layers of conductive material at the contact region is at least partially uncovered by a layer of insulator.