No it isn't it uses Liquid Crystals:
An LCD panel is made up of two pieces of polarized glass. A special
polymer that creates microscopic grooves in the surface is rubbed on the
side of the glass that does not have the polarizing film on it. The
grooves must be in the same direction as the polarizing film. You then
add a coating of nematic liquid crystals to one of the filters. The
grooves will cause the first layer of molecules to align with the
filter's orientation. Then add the second piece of glass with the
polarizing film at a right angle to the first piece. Each successive
layer of TN molecules will gradually twist until the uppermost layer is
at a 90-degree angle to the bottom, matching the polarized glass filters.
As light strikes the first filter, it is polarized. The molecules in
each layer then guide the light they receive to the next layer. As the
light passes through the liquid crystal layers, the molecules also
change the light's plane of vibration to match their own angle. When the
light reaches the far side of the liquid crystal substance, it vibrates
at the same angle as the final layer of molecules. If the final layer is
matched up with the second polarized glass filter, then the light will
If we apply an electric charge to liquid crystal molecules, they
untwist! When they straighten out, they change the angle of the light
passing through them so that it no longer matches the angle of the top
polarizing filter. Consequently, no light can pass through that area of
the LCD, which makes that area darker than the surrounding areas.
LCD displays use polerized light, yes. But they DON'T use Light Emitting
Some laptops use Light-Emitting Diode (LED) and plasma displays, but
they are not as common. LED and plasma displays need more power, which
drains the battery even more. This also makes them a less popular
solution for laptop displays.
While they make that statement (about there being LED and Plasma display
laptops) on the hows it done website, I have never seen or
heard of one (doesn't mean there isn't) and I have owned, used and seen a LOT of
laptops. A google search did not come up with a
single laptop model that had either of those available. Please show me a model
of laptop that has an LED or Plasma display.
Darn those people, don't they know better than to publish that kind of
thing when it can't be proven. Not much future in hunting up
information to prove what another site says that they felt was
correct. Best thing to do is to ask them. If they can't prove what
they have posted you might ask them to remove it and apologize to all
of the people they've mislead.
The research underway to improve the LED display is there but mostly
in cell phones, and believe it or not, an electric razor, and the
Kodak 633 camera. In fact they are in the marketplace now. In the past
they have worked with the LED display for outdoor use by civil
engineers and photographers laptops.
Seems like that would be the type of display the military would use.
If that is so maybe someone in the know about their laptops could let
Can't remember the trade magazine I was reading a few years back that
had an LED display they could roll up it was so thin. Think it was an
organic LED or maybe a polymer, both of which will kill the present
LCD market if they can get the market to get with the program.
Long way off the Corvette topic but interesting.
Speaking of diodes, does anyone happen to know what Diode is up to? I
haven't seen him in a long while. I hope he wasn't in the path of Katrina.
He was a pretty active group member for a long while. Does anyone have the
I couldn't say other than he said he was dealing with some issues and I took
it that he didn't want to share any more than that. I just hope everything
is going well and that it will allow him to join us again soon.
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