For many serious AV enthusiasts, OLED screen technology is quite simply the future of television. It's all about OLED's self-emissive pixel design - where every dot in the picture produces its own light level and color independent of its neighbors. It has proved consistently capable of producing levels of contrast miles beyond what's possible with LCD TVs and slightly beyond even the best efforts of its closest technological cousin - Panasonic's much-loved and sorely missed plasma screens. Two significant problems, though, have stopped OLED TVs from finding their way into AV fans' living rooms in large numbers.