SEOUL (Reuters) – South Koreas LG Display Co Ltd said operating profit more than halved in the fourth quarter as soft demand for TVs continued to compress screen prices, outweighing a sales rebound in displays for Apple Incs iPhones. The worlds biggest maker of liquid crystal displays on Thursday posted operating profit of 257 billion won ($241 million) for October-December, down 56 percent from a year earlier. That compared with a 238 billion won mean estimate of 31 analysts polled by Thomson Reuters I/B/E/S. Shares of LG Display, worth $11.15 billion, closed down 0. …