Patent ID: 7817113
Filing Date: 2010-10-19
Classification: G09G

Abstract:
1. A method for driving an AC type surface-discharge display device having a plurality of cells arranged in a matrix, each of the cells having a pair of a first main electrode and a second main electrode disposed on every line of the matrix and an address electrode disposed on every column of the matrix, the method comprising: providing an address preparation period in which a charge producing pulse and a charge adjusting pulse are applied, and also providing an addressing period in which each line of the matrix is scanned; applying the charge producing pulse, which has a positive polarity, to the second main electrode used as a scan electrode to generate discharges accompanied by accumulation of wall charges both between the first main electrode and the second main electrode and between the second main electrode and the address electrode, due to a potential difference between the second main electrode and the first main electrode and a potential difference between the second main electrode and the address electrode; applying the charge adjusting pulse, which has a waveform monotonously changing from a first set value potential to a second set value potential in a negative direction and has a negative polarity, to the second main electrode used as a scan electrode, to generate discharges accompanied by a decrease of wall charges produced by application of the charge producing pulse both between the first main electrode and the second main electrode and between the second main electrode and the address electrode, due to a potential difference between the second main electrode and the first main electrode and a potential difference between the second main electrode and the address electrode; and applying a negative scan pulse, which has a potential lower than the second set value potential at the completion of the charge adjusting pulse, to the second main electrode in the addressing period.