CNET has posted images of a phone that has a slide-out screen instead of one you can bend in half, like the Galaxy Z Flip and Motorola Razr.
The TCL prototype has a flexible display, but according to the pictures, it has a screen that you pull out from the device's body, and esssentialy turn it into a tablet.
Looking at the photos, the design of this TCL concept phone appears to use one continuous display, with curved screens on either side. When the device is expanded the screen seems to stretch continuously from one edge to the other. Through a break in the chassis you can pull the two sides apart to expose the surplus screen.
It isn't clear exactly how the mechanism inside would work.
TCL has shown off its prototype foldable devices at some shows, but it’s yet to announce a consumer-ready product.