Samsung Display plans to spend 13 trillion won ($11 billion) to upgrade a South Korean liquid crystal display (LCD) plant, Yonhap news agency reported on Tuesday.
The Apple supplier will announce the investment next month, Yonhap said, citing unidentified industry sources.
Samsung Display said nothing had been decided on its future investment plans.
Samsung will be eager to set up production lines for its quantum dot QD display panels, as the profitability of its LCD business has been falling in the face of competition with Chinese rivals.
In August, Samsung Display said it was looking at suspending one of its South Korean LCD production lines due to a supply glut.
LG Display last week announced a voluntary redundancy program for domestic production line employees amid mounting financial losses.