South Korea has been dominating the LCD market for several years now on the high end, supplying display panels for Apple with fabs in South East Asia. China is flooding the market with cheap panels.
Taiwan is in no mans land playing catch up and labor is too expensive to compete in an industry where margins are razor thin. $6.2 Billion buys you maybe one or two LCD fabs, this is just a drop in the bucket.
Sharp is dull and has been for years, and all the money in the world won't resurrect this corpse.