LG has launched a 55in (140cm) OLED TV - kickstarting a battle over the next-generation of high-quality screens. OLED - which means organic light-emitting diode - is more energy efficient than LCD (liquid crystal display) and plasma-based alternatives. LG's model will be sold in South Korea first with other markets, including Europe, to follow thereafter. Both LG and Samsung announced 55in OLEDs last year, but LG is the first to make its available. The firms showcased their televisions at last January's Consumer Electronics Show (CES) in Las Vegas, but until now neither company had managed to get a product to market. Read more http://www.bbc.co.uk/news/technology-20888689
