Sony may have killed production of its groundbreaking XEL-1 OLED TV, but that doesn't mean it isn't necessarily working on a followup -- it's just unveiled a new and improved, and similarly sized OLED panel at SID 2010 last week. Apparently, the big advance with this display comes courtesy of the oxide semiconductor TFT (also known as IGZO) used for the OLED panel, which Sony was able to tweak enough to deliver a ten year lifespan -- with averag