Multiple Voltage Driving Method for Reducing Invalid Power Caused by Unlighted Lines in PDPs

Sustain power consumed by unlighted lines in displayed image in each subfield is totally wasted. To improve the power efficiency, multiple sustain voltages applied to lighted and unlighted lines separately are proposed, which can reduce invalid power by decreasing the sustain voltage in unlighted lines. Different sustain voltages are used to testify the proposed method. The instance circuit operation mode is analyzed. The experimental results show that power saving efficiency can be improved by 4.5% when 10-min-long standard video supplied by the International Electrotechnical Commission displays in 50-in plasma display panel. The proposed method is easy implemented and the additional cost is very low compared with conventional circuit.