Note:

This secondary metal

plating not only reduces reflection, but is also expected to

further enhance robustness of the sensor under

environmental stress conditions. XTouch™ is also highly

appropriate for 2.5D curved and flexible designs. In

addition, the use of copper allows the possibility of an

integrated connection tail thereby eliminating a separate tail

to sensor connection. Figure 2.3-1 shows a SEM picture of

the hybrid-metal mesh.

Conclusion:

''Hybrid Copper Mesh – reasonably low reflectance and

haze with higher transmission. In addition provides

thin tracking borders, integrated tail, and the lowest

resistivity for superior touch performance.''

http://www.visteon.com/products/documents/touch_sensor_transparent_conductor_optical_comparison.pdf

And what about that Cost savings?

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