A new RMSP reset pulse for improved reset discharge controllability in AC PDP

We are proposing a new ramp-biased multiple short pulse (RMSP) for AC plasma-display panels, which is composed of multiple short pulses with fast ramp bias up to 5 V/μs. Through adjustment of the period and duty ratio of RMSP and using the tail effect, we have succeeded in controlling the final wall voltage level by ±10 V from the level of (peak RMSP voltage)-(discharge breakdown voltage). We applied RMSP to the reset period and achieved stable discharge, higher address margin, and lower background luminance as well as shorter reset time. When compared with the conventional ramp reset method, the new reset method using RMSP could improve the darkroom contrast ratio by 52% and shorten the reset time by 215 μs for each subfield.