Flat-Panel Displays
How
does LCD work?
p. 300 Fig. 6-12
Next
Step 1. Panel
of fluorescent
tubes emits
light waves
through
polarizing glass filter, which guides light toward layer of liquid crystal cells.
of fluorescent
tubes emits
light waves
through
polarizing glass filter, which guides light toward layer of liquid crystal cells.
Step 2. As light passes through liquid crystal, electrical charge causes some of
the cells to twist, making light waves bend as they pass
through color filter.
Step 3. When light reaches second polarizing glass filter, light is allowed to pass
through any cells that line up at the first polarizing glass
filter. Absence and presence of colored light cause image to display on the
screen.
Liquid crystal cells
Color
filter
Transparent
electrodes
Alignment
layer
Polarizing
glass filter
Fluorescent
tube panel
ØUses liquid
compound to present information on a display
Click to view Web
Link,
click Chapter 6, Click Web Link
from left navigation, then click LCD Technology
below Chapter 6
click Chapter 6, Click Web Link
from left navigation, then click LCD Technology
below Chapter 6