I'm not sure about the LCD screens keeping me awake (probably though).
But I definitely notice a discomfort around intense LED lighting. I suspect it's the very narrow bandwidth that the LED's operate on.
Some festivals I go to have so switched to LED lighting that I have to wear sunglasses at night
What annoys me mostly is the current fashion to have glaring bright LED's on pretty much everything, where something simple as a wifi-extender can light up a room at night like a disco.
But I definitely notice a discomfort around intense LED lighting. I suspect it's the very narrow bandwidth that the LED's operate on.
Some festivals I go to have so switched to LED lighting that I have to wear sunglasses at night