We have studied a field-sequential stereoscopic display system with 42-inch HDTV PDP and confirmed that a field-sequential stereoscopic image can be displayed with currently available PDP panels. But in our experiments, we found that the cross-talk impairment between left and right images is more visible for a PDP display than a CRT display. We investigated the cause of the cross-talk and concluded that it is mainly caused by the decay time of phosphor emission of the PDPs. We estimate the amount of cross-talk from the decay time of phosphor and compare it with the measured values. We also propose a method to reduce the cross-talk by signal processing.