With the launch of a large-screen smartphone-tablet hybrid on Thursday, LG Electronics is attempting to achieve an ambitious goal: regain the No. 3 spot in the global smartphone market place. It may be a long shot. Last month, Chinese PC maker Lenovo announced plans to buy Google’s Motorola Mobility handset unit for $2.9 billion. There has been a lot of coverage in the press about the recent Lenovo-Motorola deal, but internally LG has been focusing on boosting their own…