Monitors
are made of invariably 2 layers - a front layer of LCD (Liquid Crystal Display
or Liquid Crystal Diode) that makes up the dots you see as pixels, along with
the display of color.
This
LCD layer is then back-lighted using light tubes at the back, giving it
brightness. Formerly, LCD displays use to use CCFL (Cold Cathode Flourescent
Lamp) as a light source at the back, but however in recent years there has been
a marked shift towards the use of LED (Light Emitting Diode) as a back-light
source.
The advantages of LEDs are as follows:
1.
Faster
Turn On: LEDs
can reach maximum brightness faster than CCFLs, in fact almost instantly.
2.
More
Neutral Colors: CCFLs
are known to give a warm/yellowish tint. LEDs have a more neutral whitepoint.
3.
Brighter: LEDs are brighter generally
than CCFLs, thus allowing a display to achieve even higher maximum brightness.
4.
Thinner: The reason LEDs are coming
into prominence is that it was driven by the notebook sectors - LED
back-lighting can be made thinner than CCFL back-lighting.
5.
Longer-Lasting: Apparently, LEDs are rated
for more life than CCFLs. Also the degradation over time is less severe than
CCFLs.
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