Samsung plans $1 billion debt sale to fund U.S. chip plant SEOUL (Reuters) - Samsung Electronics Co (005930.KS) said on Monday its U.S. operation plans to sell around $1 billion in bonds, its first major overseas debt sale in more than a decade, to fund its chip plant operations. Samsung, which supplies semiconductors to Apple's (AAPL.O) iPhone and iPad tablet, is considering selling the 5-year bond to secure operational funds for its chip operations in Austin, Texas, and has sent requests for proposals to banks to manage the deal, a Samsung spokesman said. The South Korean firm had around 22 trillion won ($19.2 billion) in cash as of end-September and mainly uses its internal cash to fund investments. The company plans to increase investment this year mainly to boost production of mobile chips and next-generation OLED (organic light-emitting diode) display panels. It has yet to announce detailed investment plans for 2012. $1 = 1148.2000 Korean won