I was wrong. It still doesn’t. The only way to get the display to turn off is to press the power button. After the nightly reboot, the display turns back on and stays on.
This is now my biggest gripe with it! The display being on continuously means the battery doesn’t last very long. If the terminal isn’t plugged in at the end of the day then it doesn’t have enough charge to make it through the night and is completely dead in the morning, which is very inconvenient.
I can understand the desire for the display to be always-on in situations where the terminal is plugged in, but please make this configurable for those of us who use it under battery power!