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The characteristics of light and LCD polarized panels
LCD devices use the unique characteristics of
light and how it travels through polarized panels
for its control.
Light
Light vibration
Figure 6-3.
-Polarized panels
Polarized panels are used in LCD devices to filter
or pass light waves vibrating only along a specific
plane. Light waves vibrating along different
planes are 'blocked' or do not pass through the
polarized panel. Only the light that passes the two
Liquid Crystal
Alignment Film
Polarized panel
Light
Figure 6-4.
-The characteristics of light
Light consists of a number of waves that vibrate in
a 90-degree angle to the direction that they travel.
In other words, one beam of light is formed of
many waves that vibrate along many different
planes. When light enters the Liquid Crystal, the
vibration planes of these waves are twisted to
match the long direction of the Liquid Crystal
molecules.
Polarized panel
polarized panels sandwiching the Liquid Crystal
will be seen on the display.
In LCDs, the polarized panels are aligned in the
same direction as the alignment films.
A deeper look into LCDs
Direction of light vibration
Alignment Film
RGB Color Filters
Polarized panel
Product Information Manual Sony Professional LCD Monitors
31
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