james h
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| posted on 27/2/08 at 01:58 AM |
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Friday question early - Transparent LCDs
A friday question early:
Can you remove the backing of a simple LCD to achieve a transparent display? Like an
alarm clock
If so, is this possible only with these types of simple LCD, or can it be applied further to other things like phone displays? (I assume not tbh -
otherwise I probably would have seen it already)
Sorry for the randomness!
James
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RazMan
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| posted on 27/2/08 at 08:25 AM |
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As LCDs depend on light projected from behind to make them visible, you might be able to use ambient light in some situations.
The backing might be difficult to remove with damaging the LCD though.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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blakep82
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| posted on 27/2/08 at 08:41 AM |
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ibm used to do a laptop (when colour LCD screens were new for computers) where you could remove the back and use it on a overhaed projector, so i
guess it can be done, again though, whether you'd damage the LCD though...
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Mr Whippy
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| posted on 27/2/08 at 08:44 AM |
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man don't do that nearly gave me a heart attack!
ITS FRIDAY!!!!!
Anyway yes LCD's can work either with a reflective backing i.e. mirrored or with the light going straight through like a LCD TV. There are two
polarized films on the glass sheet with the direction of polarisation being the same. The liquid crystal when charged bends the light so it is as
though one of the polarized sheets has been turned 90 degs so no light gets through.
[Edited on 27/2/08 by Mr Whippy]
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smart51
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| posted on 27/2/08 at 09:56 AM |
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I've seen a transparent LCD alarm clock. It was almost impossible to read unless you held it up to the light. Clever but useless.
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02GF74
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| posted on 27/2/08 at 10:13 AM |
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quote:
Originally posted by RazMan
As LCDs depend on light projected from behind to make them visible, you might be able to use ambient light in some situations.
The backing might be difficult to remove with damaging the LCD though.
hmmm, not sure about that.
as Whipopy said, the LCD itself is transparent and becomes opaque.
To be able to see this there are at least two types - back lit ones (e.g. mobile phone, lap top) and reflective ones (watches, calculators) - the
latter work by having some sort of reflector behind them and use ambient light.
Depending on what ^^^ wants to do, it may be possible to strip the LCD display down.
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