It appears to be a Burroughs Self-Scan plasma display.
The display in action on a Q1: https://www.1000bit.it/lista/q/q1europe/q1microlite.png
Close-up shot in a Q1: https://www.peel.dk/Q1/img/SN615-05.jpg
Brochure: https://archive.org/details/TNM_Self-Scan_II_panels_for_data...
There are videos of the display being demonstrated on YouTube. Search for Burroughs Self-Scan.