A China-based company (maybe called Interim, it's not clear) has demonstrated a new fully-bendable smartphone. The company claims that this smartphone has a "graphene-based screen", 5.2" in size.
It's not clear what the meaning of a "graphene-based" display is, in this case. While graphene can theoretically be used to make light emitting devices, it's highly unlikely that this is the case here. My guess would be that this is a flexible OLED display (could also be a flexible LCD, but that's unlikely) with a graphene-based touch panel.
Other possibilities include a graphene encapsulation layer (not likely), a graphene-based substrate (which is something that is claimed in one of the Chinese sources of this story), or perhaps an OLED display with graphene electrodes. While these solutions are possible, it's not likely as these technologies are quite far from commercialization.
Another possibility is that the phone case itself is based on a graphene composite, and in this case there is no graphene used in the display.
Graphene is indeed a great material that will find many uses in the display (and lighting) industry. To learn more, check out our market report that focuses on graphene for display and lighting.