Concurrent Driving Method with Fast Scan Rate for Large Mutual Capacitance Touch Screens

Figure 2

Proposed concurrent driving method with differential sensing. (a) Step  1: concurrent driving with differential sensing. (b) Step  2: single-line driving with differential sensing. The output of integrator is positive if one of the even cells marked in purple color is touched, negative if one of the odd cells marked in green color is touched, and zero if there is no touch.