| 摘要 |
A technique which relates to discharge in sustain operation of a PDP device and a driving waveform thereof, and which can improve luminous efficiency to achieve stability while reducing a possibility of failure of discharge is provided. In a generating operation of a sustain pulse in a sustain pulse generating circuit, after LU-ON (t 1 to t 2 ), a voltage applied on electrodes is raised up to a sufficiently-high voltage, namely, a sustain voltage according to an ON state of a CU circuit (t 2 to t 3 ), and discharge is started, CU is once turned OFF (t 3 ), then a first discharge peak is formed (t 11 ). Thereafter, CU is turned ON again before discharge is converged (t 12 ) to raise a voltage value and form a second discharge peak (t 14 ). Since a voltage Vi to start discharge is sufficiently high, a possibility of discharge failure is suppressed, and an effect of improvement in luminous efficiency is not ruined.
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