Patent ID: 7161593

Claim:
A method of backplane charge sharing for power reduction for LCD, liquid crystal display, liquid crystal display drivers comprising the steps of: connecting a first backplane switch between a first backplane and a second backplane, connecting a second backplane switch between the second backplane and a third backplane, connecting an nth backplane switch between an nth backplane and an (n+1)th backplane, attaching a backplane control signal to each of said backplane switches which connect adjacent backplanes, wherein said first backplane switch is closed by a first backplane control signal, for a short period of time at the beginning of each backplane period, wherein a closed first backplane switch discharges one half of said first backplane's charge from said first backplane's capacitance into the capacitance of said second backplane, wherein said discharge of said first backplane and the charge of said second backplane results in the sharing of charge between said first backplane and said second backplane, wherein said first backplane is in a fully-charged state during a positive cycle, and wherein said first backplane is in a fully-discharged state during a negative cycle.