Patent ID: 8866787

Claim:
A touch screen having a touch sensor panel and a display device, the touch screen configured to perform both a display and a touch sensing functionality comprising: a plurality of pixels, each pixel including a storage capacitor comprising a first electrode and a second electrode, the plurality of pixels forming drive regions and sense regions; one or more opaque display elements used to perform the display functionality of the touch screen; and a plurality of common lines made from a non-transparent conductor, connected to the first electrode of one or more of the plurality of pixels and positioned at a different layer in the touch screen than the opaque display elements such that the opaque display elements and the common lines substantially overlap one another; wherein the opaque display elements contribute to an aperture ratio of the display device and the plurality of common lines substantially maintain the aperture ratio of the display device; and wherein the first electrodes connected to the common lines are used in the touch sensing functionality for drive signals in the drive regions and sense signals in the sense regions, the sense signals generated by capacitive coupling between the drive and sense regions; and wherein the first electrodes connected to the common lines are used in the display functionality for display data signals.