SEOUL, May 16 (Reuters) – South Korea's LG Display Co Ltd (034220.KS) will start supplying high-end TV panels to Samsung Electronic Co Ltd (005930.KS) from as early as this quarter, three sources said, in a deal that would help the loss-making flat-screen maker turn profitable. LG Display aims to supply 2 million units next year and boost shipments to 3 million and 5 million units in subsequent years, two sources with direct knowledge of the matter said. Initial supplies to Samsung would likely be 77-inch and 83-inch white OLED (WOLED) TV panels. For Samsung, the deal highlights how it is…