The Apple supplier posted an operating profit of 132 billion won ($98.67 million) for the October-December quarter, versus a loss of 876 billion won a year earlier.
The result matched LG Display's estimate of 132 billion won released earlier this month.
Revenue rose 1% from a year earlier, to 7.4 trillion won.
($1 = 1,337.7400 won)
(Reporting by Joyce Lee and Heekyong Yang)