Patent ID: 7639212
Filing Date: 2009-12-29
Classification: G09G

Abstract:
1. An AC-type gas-discharge display device, comprising: an AC-type gas-discharge panel having a plurality of first and second electrodes extending in a first direction and arranged by turns substantially in parallel and a plurality of third electrodes extending in a direction perpendicular to the first direction and arranged so as to intersect the first and second electrodes and in which a cell is formed at the intersection of a combination of the first and second electrodes and the third electrode, wherein: during an address period, an address discharge is caused to occur between the second electrode and the third electrode to select a cell to be lit; during a sustain discharge period, sustain pulses of opposite polarities are applied alternately between the plurality of the first electrodes and the plurality of the second electrodes to cause a discharge to occur for the display of the cell selected during the address period; the plurality of the third electrodes are divided into first and second groups; and during the sustain discharge period, a fixed voltage is applied to the third electrode in one of the first and second groups and the third electrode in the other of the first and second groups is caused to have a high impedance.