Patent ID: 7492339

Claim:
A method of driving a bistable electro-optic display having at least one pixel which comprises applying to the pixel a waveform V(t) such that: J = ∫ 0 T ⁢ V ⁡ ( t ) ⁢ M ⁡ ( T - t ) ⁢ ⅆ t is less than about 1 volt sec, where: T is the length of the waveform, the integral is over the duration of the waveform, V(t) is the waveform voltage as a function of time t, and M(t) is a memory function that characterizes the reduction in efficacy of the remnant voltage to induce dwell-time-dependence arising from a short pulse at time zero, the waveform comprising a first pulse having a voltage, polarity and duration, and a second pulse having substantially the same voltage magnitude, a polarity opposite to that of the first pulse and a duration substantially less than that of the first pulse.