Patent ID: 7046223

Claim:
A method for driving a display for sequentially feeding a scanning signal to a plurality of scanning electrodes and a data signal to a plurality of data electrodes to drive said display in which a cell is arranged at a point of intersection between each of said plurality of said scanning electrodes placed at regular intervals in a row direction and each of said plurality of said data electrodes placed at regular intervals in a column direction, said method comprising: outputting digital video data, with or without said digital video data being inverted, based on a polarity signal which is inverted in every one horizontal sync period or in every one vertical sync period; selecting, based on said polarity signal, one of a first voltage set and a second voltage set, said first voltage set comprising a plurality of gray scale voltages configured to match transmittance versus applied positive voltage characteristics of said display, and said second voltage set comprising a plurality of gray scale voltages configured to match transmittance versus applied negative voltage characteristics of said display which is different from said transmittance versus applied positive voltage characteristics; selecting, based on the inverted digital video data or the non-inverted digital video data, any one of said plurality of said gray scale voltages making up the selected one of said first and second voltage sets to apply the selected one gray scale voltage as said data signal to a corresponding data electrode; and amplifying said selected one gray scale voltage only for a first period of said one horizontal sync period and applying the amplified said selected one gray scale voltage as said data signal to said corresponding data electrode and feeding said selected one gray scale voltage as said data signal, as it is, to said corresponding data electrode during a period other than said first period of said one horizontal sync period.