LCD Monitor

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LCD Monitor

• -What is LCD Monitor?
• -How LCD Monitors work?
• -Why LCD Monitors?
• -Comparing with CRT Monitors
• -So, CRT or LCD

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What is LCD Monitor?
LCD Monitor is a kind of monitor using Liquid
Crystal to glow red, green and blue. Liquid
Crystal was found in 1888, but the people at that
time dont know how to use them to form a
monitor, and they dont have computer at that
time.
A typical LCD monitor
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How LCD Monitors Work?
They are simple, simply one liquid crystal
between two polarized panels.
When there is electricity go through the liquid
crystal, the crystal will change the Properties
of the light wave, such as from horizontal to
vertical.
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How LCD Monitors Work?
Page 2
When LCDs are connected to Electricity, the light
waves are Able to get through the polarized
panels. (shown above)
The picture in the left is the close up (60x)
of The LCD monitor.
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Why LCD?
Why LCD? Why dont we use the traditional CRT
Monitors? We use LCD monitor because it is
completely conserve of space. -It is flat and
thin. -LCD monitor images wont get blur after
years because it dont need focus. -With LCD
monitor, you can put a 21 inch monitor in your
room! Because it is thin.
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Comparing with CRT
Vs.
LCD
CRT
Advantage
-Light -Thin -No focusing problem -Conserve
Space -Cyber look -Less radiation problem
-Highest resolution Usually 16001200 or
higher -Cheap -Mature -Sufficient
brightness -High refresh frequency usually 200Hz
Disadvantage
-Highest Resolution Usually 12801024 -Expensive
-Not mature yet -Not bright enough compare with
CRT -Low refresh frequency usually 75Hz
-Heavy -Thick (related to the monitor
size) -There is focus problem if aged -Waste
Space -Old looking -Radiation problem
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So, CRT or LCD?
Your decision.
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The End
Thanks for looking..?