Touch simulation system and method

A method for use with a touch screen sensor having a first surface, a second surface opposing the first surface, and a plurality of electrodes disposed on or proximate to the second surface, the method comprising:

• applying a first signal to the first surface of the touch screen sensor;
• applying one of a plurality of second signals to each of the plurality of electrodes disposed on or proximate to the second surface of the touch screen sensor;
• and
• simulating a touch on the touch screen sensor by changing a characteristic of at least one of the plurality of second signals relative to the first signal.

A method for use with a touch screen sensor comprising a substrate having a first surface and a second surface opposing the first surface, and an electrically conductive structure coupled to, or positioned proximate, the substrate and situated proximate the second surface, the method comprising:

• applying first and second voltage signals of substantially equal amplitude respectively to the first surface and conductive structure;
• changing one or both of the first and second voltage signal amplitudes to develop a potential difference between the first surface and conductive structure of the touch screen sensor;
• and
• detecting a response to the potential difference as the simulated touch.

A touch sensing system, comprising:

• a touch screen sensor comprising a substrate having a first surface and a second surface opposing the first surface;
• an electrically conductive structure coupled to, or positioned proximate, the substrate and situated proximate the second surface;
• and
• a controller coupled to the touch screen sensor, the controller configured to apply first and second signals respectively to the first surface of the touch screen sensor and the electrically conductive structure, the first and second signals comprising AC voltage signals, the controller configured to simulate a touch on the touch screen sensor by changing one of the first and second signals relative to the other of the first and second signals.