A plasma display adopting a sub-field scheme drive, which seeks to reduce light intensity level variation when the input video signal field frequency is varied. A sub-field setter 2 sets a plurality of sub-fields from the 1-st one (SF1) to an n-th one (SFn) with light intensity level ratios of 2.sup.n-1...http://www.google.de/patents/US6037917?utm_source=gb-gplus-sharePatent US6037917 - Plasma display system
