Football on television at the same time as the evening sitcoms? No problem. Sharp has developed a liquid crystal display panel that allows viewers on the right and left side of a sofa to watch different TV programs staring at the same screen. Earphones are still required, but the Japanese firm, the world’s top maker of LCD sets, says directional sound would be examined. In the interim, couch potatoes now have a dual-view display that means fewer battles for control of the zapper, and indeed a TV for two.