LG is apparently tired of this tiny OLED stuff. 15-inch TVs and 4-inch cellphones? What is this, 2009? The company has decided it's time to super-size the organically-powered panels and plans to introduce a 55-inch HDTV in mid 2012. We've got faith it can deliver too -- last summer the Korean manufacturer was showing off a 31-inch model (above) and it sounds like it's shifting focus c