TCL CSoT shows new foldable and rollable inkjet-printed OLED prototypes

TCL CSoT had several interesting new OLED demonstrations at SID DisplayWeek 2023, all of which were produced by inkjet printing, which shows the company's commitment to the new production process.

First up is the company latest inkjet-printed panel, this time CSoT showed a 8K (7680 × 4320) 65" TV panel that is foldable (with a bending radius of 25 mm). The panel offers a peak brightness of 800 nits, a response time of under 1 ms and a refresh rate of 120Hz.


CSoT demonstrated a 8K 65" inkjet printed OLED back in 2021, but then it was not a flexible panel, and CSoT says that the latest display is the world's first printable foldable 65" 8K panel ever produced, which is likely true. CSoT says it will start production of inkjet-printed OLED TV in 2023, but it is likely the company will not be ready for mass production by the end of this year.

The second display in the video above is a 14" rollable OLED panel, that offers a 4K resolution, a sliding distance of 60 mm (when closed the display is 12.6" in size) and a refresh rate of 120Hz.

Another display on show is a 4K 31" inkjet-printed rollable display produced on an IGZO backplane. This one offers a 120Hz refresh rate, a rolling radius of 20 mm, and low reflectance (2%).

Finally, CSoT showed a 17" foldable (4 mm) inkjet-printed OLED. This panel offers a resolution of 1200x1600, and an IGZO backplane, a brightness of 400 nits and a refresh rate of 90Hz. CSoT says that this panel have been tested for over 200,000 folding cycles. CSoT also says that this panel uses a new compensation circuit technology at its IGZO backplane, but did not detail more.

CSoT used to collaborate with JOLED, but as the Japanese inkjet-printing producer went bankrupt a couple of months ago, the future of CSoT's program is unclear. The company did not provide much, beyond saying that it is continueing the production process development and commercialization on its own.

Besides these interesting printed OLEDs, CSoT also had a new microLED display on show - a tiled 18.8" 960x540 display, that offers a pixel-pitch of 0.43 mm, an IGZO backplane and a peak brightness of 1200 nits. CSoT says that there's zero bezel on the display, but one could actually see the seams between the different modules.

Posted: May 31,2023 by Ron Mertens