TCL's latest generation of mini-LED panel is called OD Zero, ostensibly as the OEM claims to have reduced the distance between the backlight and diffuser layers in these panels to "zero millimeters". This could improve on luminance and color-depth for the devices based on it, not to mention their form-factor. TCL has also announced that its 2021 smart TVs will launch with Google's new UI.
https://www.notebookcheck.net/TCL-announces-its-new-form-of-OD-Zero-mini-LED-alongside-upcoming-Google-TVs-at-CES-2021.514839.0.html