“Can touching an LCD screen cause damage?”

(Answer requested by Ian Sandoval)

Touching with what, and how hard?

Even on screens that aren’t meant to be touched (e.g. not a touchscreen!) a simple tap or swipe with a fingertip, where the screen is not visibly deformed, won’t do any harm except maybe to leave behind a little skin oil.

A harder touch may cause the LCDs to visibly react with swirls and whorls, but if you don’t press too hard, no permanent damage accrues.

But — of course! — if you press any screen with a sharp object, you may damage its covering; and if you press very hard even with your finger you may damage the internal components of the screen.

BTW: Most screens sold as “LEDs” are still actually LCDs, but with an LED backlight. Only “emissive” technologies, such as xOLED, are true LEDs with no backlight.

But in any case, they’re all fine with common-sense handling: The no-sharp-object, gentle-touch rule is pretty universal.

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