Patent ID: 7589703

Claim:
A method to improve performance of a liquid-crystal display having a liquid crystal layer defining a plurality of pixels, the liquid crystal layer having a first side and an opposing second side, wherein at least some of the pixels comprises a plurality of sub-pixels, each sub-pixel is divided into at least a first region and a second region, and each of the sub-pixels is driven by a gate line and a data line, said method comprising: disposing a first pair of electrodes on opposing sides of the liquid crystal layer in the first region in each of said sub-pixels, wherein the first pair electrodes comprises a first electrode operatively connected to the data line via a switching device driven by a signal on the gate line, and a second electrode operatively connected to a first common line; disposing a second pair of electrodes on opposing sides of the liquid crystal in the second region in said sub-pixel, wherein the second pair of electrodes comprises a first electrode operatively connected to the data line via a switching device driven by the signal on the gate line, and a second electrode operatively connected to a second common line; applying a first voltage to the first common line; and applying a second voltage to the second common line, wherein the second voltage is different from the first voltage by a differential voltage, the differential voltage having a waveform substantially alternating between a first value and a second value.