Display device including display panel using AC discharge
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsTakahiro Urakabe, Takashi Hashimoto, Akihiko Iwata
Life of this patent
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Abstract
A wall-voltage generation period is provided once in every several tens or hundreds of frames. A wall voltage (broken line) generated in the wall-voltage generation period does no disappear irrespective of the presence or absence of discharge emission. The presence or absence of discharge emission is controlled by varying the baseline of a voltage across electrodes (solid line) depending on variations in an address voltage (Va) during a display period. The number of priming reset discharges which has been necessary at least once in each frame can be reduced.
Claims15
A display device comprising:
- a display panel using AC discharge;
- and
- a driving circuit, wherein
- said display panel includes a discharge cell provided with a first electrode and a second electrode covered with a dielectric, said first and second electrodes being connected to said driving circuit and said driving circuit being configured to apply voltages to said first and second electrodes including a sustain voltage applied to said first electrode in the presence of a wall voltage stored by said discharge cell to cause light emission from said discharge cell by inducing AC gas discharge,
- said driving circuit being further configured to apply voltages across said first and second electrodes to prevent said AC gas discharge light emission from occurring in said discharge cell without erasing said wall voltage, even if said sustain voltage is applied to said first electrode.
A method of driving a display panel using ac discharge which includes a discharge cell provided with a first electrode and a second electrode covered with a dielectric and causing light emission from said discharge cell by inducing ac gas discharge by said first and second electrodes,
- said method comprising the steps of:
- (a) causing a discharge emission in said discharge cell by applying a sustain voltage to said first electrode by the use of a wall voltage generated in said discharge cell;
- and
- (b) preventing said discharge emission from occurring in said discharge cell without erasing said wall voltage, even if said sustain voltage is applied to said first electrode.
Dependencies are inferred from the claim text.