this post was submitted on 24 Jan 2025
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Actually, the pixels go completely black and do not consume any electricity at all in that state.
You might be thinking of early OLEDs, which had to stay on at all times to prevent blur/smearing. But panel manufacturers solved that problem a few years ago. Don't remember exactly when the change happened, but I remember first seeing true black OLEDs sometime around 2017/2018.
When a lamp turns off it doesn't become a black hole. Previous commenter was correct, though I appreciate your info about OLED
The light doesn't become true black, it's dark but not a complete nothingness. So yes, it'll still consume power.