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I recently purchased an Asus UL30Vt-X1, which according to the specs has an LED backlight for the screen. It definitely appears to be an LED backlight, but the laptop still has a sticker that the lamp in the display contains mercury.

Why is this warning sticker there if it has an LED backlight?

Edit: The exact wording from the sticker:

The lamp in this display contains mercury. Recycle or dispose according to local, state and federal law.

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2 Answers

up vote 6 down vote accepted

My best guess, and it's only a guess, is that they just stick them onto all the cases anyway, and then decide whether to put a LED backlight or a fluorescent one, or just stick them on because of inertia. Also, so that they accidentally don't leave one that needs a sticker without. It's corporate logic.

And recycling is good advice anyway. :)

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Your guess is as good as any (and better than mine) +1 for corporate logic –  Ivo Flipse Feb 10 '10 at 14:51
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I belive LCD (liquid-crystal display) could not generate light on their own, so a LED was placed behind it, then the LCD just filtered the light into different paterns, see picture here: http://byteshopstyle.files.wordpress.com/2009/10/lcd-cross-section.jpg?w=510

The LED backlight did not contain mercury, but the LCD did.

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1. The liquids used in LCDs do not contain mercury. 2. The sticker says that the lamp contains mercury. –  Ignacio Vazquez-Abrams Aug 13 '13 at 0:29
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Ignacio is correct; LCDs don’t use mercury and the sticker specifically implicates the backlight: The lamp in this display contains mercury. Recycle or dispose according to local, state and federal law. –  Synetech Aug 13 '13 at 0:40
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