Plasma display device and drive method

[0021] Example 1:

[0022] like figure 1 As shown, the time of the first slowly rising staircase waveform is extended by 2~5 subfields on the basis of the standard slowly rising staircase waveform time. The principle is: in the process of the slow rise of the driving voltage, the weak discharge is continuously carried out, and the Y electrode can accumulate enough negative charge, which creates favorable conditions for the normal operation of the waveform in the subsequent reset period, so that all discharge cells can achieve consistent discharge. State, in order to reduce MD defects to create conditions, the macroscopic performance of MD defects is improved.

[0023] Example 2:

[0024] like figure 2 As shown, the time of the first slowly falling staircase waveform is extended by 2~5 subfields on the basis of the standard slowly falling staircase waveform time. The principle is: the first slow-declining staircase waveform is lengthened and then a part of the accumulated negative wall charge is cut off, so that no false discharge occurs during the addressing period.

[0025] Example 3:

[0026] like image 3 As shown, the voltage value of the sustain voltage is lowered below its reference value during the first phase of the slowly rising staircase waveform. Its reference value is 205±3 V, and / or the voltage value of the sustaining voltage is raised above its reference value at the first slowly decreasing step-like waveform, and its reference value is -150V~-170V.

[0027] The principle is: as far as the waveform is concerned, lengthening the first slowly rising stair-like waveform or the first slowly falling stair-like waveform is equivalent to shifting it closer to the image 3 The middle dotted line part, and the realization of this process must use the maintenance voltage as the carrier, that is, reduce the maintenance voltage, so that all discharge cells can reach a consistent discharge state, so that the MD defect can be improved. Of course, the rising amplitude or the falling amplitude of the sustain voltage should extend the time of