Plasma display apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNobuaki Nagao, Junpei Hashiguchi, Katsutoshi Shindo, Toshikazu Wakabayashi
Life of this patent
Estimating the term…
Abstract
A plasma display apparatus has a waveform of a driving voltage supplied from a driver. The waveform has a sustaining period when a sustaining pulse is alternately applied to scanning electrodes and sustain electrodes for keeping discharge. Besides, the waveform has an erasing period when a ramp voltage pulse whose polarity differs from that of a sustaining pulse is applied to an electrode, which differs from an electrode where a last pulse of the sustaining pulse is applied. As a result, false discharge is prevented, and a stable image can be displayed.
Claims11
A plasma display apparatus including:
- (A) a panel section including:
- (A-1) a first board having a plurality of scanning electrodes and sustain electrodes in pairs;
- and
- (A-2) a second board having data electrodes which cross the scanning electrodes and the sustain electrodes, and faced the first board;
- and
- (B) a driver for outputting a driving voltage for driving the panel section,
- the plasma display apparatus comprising:
- a sustaining period when a sustaining pulse is alternately applied to the scanning electrodes and the sustain electrodes for keeping discharge,
- wherein a voltage Vsh of a last pulse of the sustaining pulse has a following relation for a voltage Vst of the sustaining pulse before the last pulse and a discharge-starting voltage Vf2 between one of the scanning electrodes and one of the sustain electrodes
- Vst≦Vsh<Vf2.
A plasma display apparatus including:
- (A) a panel section including:
- (A-1) a first board having a plurality of scanning electrodes and sustain electrodes in pairs;
- and
- (A-2) a second board having data electrodes which cross the scanning electrodes and the sustain electrodes, and faced the first board;
- and
- (B) a driver for outputting a driving voltage for driving the panel section,
- the plasma display apparatus comprising:
- a sustaining period when a sustaining pulse is alternately applied to the scanning electrodes and the sustain electrodes for keeping discharge,
- wherein a pulse width ts2 of a last pulse of the sustaining pulse is wider than a pulse width ts1 of the sustaining pulse before the last pulse.
A plasma display apparatus including:
- (A) a panel section including:
- (A-1) a first board having a plurality of scanning electrodes and sustain electrodes in pairs;
- and
- (A-2) a second board having data electrodes which cross the scanning electrodes and the sustain electrodes, and faced the first board;
- and
- (B) a driver for outputting a driving voltage for driving the panel section,
- the plasma display apparatus comprising:
- (a) a sustaining period when a sustaining pulse is alternately applied to the scanning electrodes and the sustain electrodes for keeping discharge;
- and
- (b) an erasing period when a ramp voltage pulse whose polarity differs from polarity of the sustaining pulse is applied to one of said scanning or sustain electrodes, which differs from another of said scanning or sustain electrodes where a last pulse of the sustaining pulse is applied.
Dependencies are inferred from the claim text.