A:Answer I can't find anything that tells me if the screen is LED and if it has a mercury switch. But my guess would be the screen seems to me. It a good, clear, crisp picture while watching movies. Also, I would not think it has a mercury switch. Thats old technology and as far as I know isn't used anymore. If it does, its internal and enclosed. So, it wouldn't be of any harm to anyone. Thats really all I know. I hope that helps.