Samsung had already given notice of the changes but now the spin-off company Samsung Display if official. Samsung Display will operate as a separate company and is the world’s largest display manufacturer, Samsung says.
Samsung Display official
LG has had a separate company for their display operations since 1999 called LG.Display (originally LG.Philips Display) and Samsung has now also decided to separate their display manufacturing and research into a new company.

Samsung Display will be responsible for display research and manufacturing in the future
The new company called Samsung Display will be responsible for all research, development and manufacturing of display panels in the future. The company will also be merged with Samsung Mobile Display that has been responsible for all Samsung's OLED operations.
It is not exactly clear what the new Samsung Display company will change for Samsung’s loss-making LCD business but we already know that Samsung will focus on OLED display technology in the years to come. Samsung also says that the new Samsung Display is the world’s largest display manufacturer.
The new official site for Samsung Display is www.samsungdisplay.com.