The advertisements show a smartphone with a high screen-to-body ratio, with little bezel on the top and bottom. There is also no home button found the handset, and the fingerprint sensor could be built into the display, CNET noted.
See also: Samsung Galaxy S8 rumor roundup
It's likely the handset in Samsung Display's advertisements is a dummy unit to show the display to other OEMs.
Samsung is prone to using an AMOLED display as rumors have suggested will be inside the Galaxy S8, giving us a hint of what could come at the rumored February event.
Samsung wasn't immediately available for comment. The advertisements were posted directly to YouTube earlier in the week.
It's inevitable: Samsung will build a phone with a foldable display: