TCL first discussed flexible smartphone screens which rolled up earlier this year, and today a video surfaced showing the concept being developed in their labs.

The short video shows a 4.5 smartphone which can expand to 6.7 inches without compromising device thickness.

TCL is developing the technology based on OLED screens printed by an inkjet printer on a flexible substrate, and says the technology can currently withstand being furled and unfurled 200,000 times.

At IFA TCL said they do not expect to bring devices using the screens to market this year, but DisplaySearch’s Ross Young says there is a race to get these devices to market, suggesting we may not have to wait too long.