Drive circuit for display panel
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHironobu Arimoto, Atsushi Ito
Life of this patent
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Abstract
In a display panel drive circuit, discharge is caused by applying a positive display pulse to a common electrode. The discharge is inhibited by applying a positive control voltage to the individual electrodes. Applying an opposite polarity pulse to the common electrode erases any charge remaining after an unstable discharge and effectively prevents unstable discharges.
Claims4
A drive circuit for a display panel having an individual electrode in each of a plurality of display cells arranged in a matrix configuration together with a common electrode that is common to the plurality of display cells, for controlling gas discharges in each display cell by applying a display pulse to the common electrode to perform display operations and by individually applying control voltages to the individual electrodes to control the discharge in each display cell, wherein:
- a reset pulse having a polarity opposite to that of the display pulse is applied in intervals between applied display pulses to the common electrode;
- and wherein
- said display pulse is formed from voltages of two levels, the voltages rising and falling in a stepwise fashion, with the absolute voltage value of said reset pulse greater than or equal to the first level voltage value of the display pulse.
Dependencies are inferred from the claim text.