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7. Comparison between TN, STN and FSTN technologies:
ITEM
TN
Contrast Ratio
View Angle
COST
3
2
1
3
2
1
3
2
1
STN
FSTN
Remarks: with 1 being the best or most expensive and 3 the worst or least expensive.
8. Differences between reflective, transflective and transmissive displays
: Such display includes a diffuser. This layer reflects the light that enters the
Reflective
front of the display. Reflective displays require ambient light for the light source since
there is no backlight.
: As type of backing which is bonded to the rear polarizer. Enables light
Transflective
to pass through the back, as well as reflecting light from the front.
: A type of LCD which does not have a reflector or transflector
Transmissive
laminated to the rear polarizer. A backlight must be used with this type of LCD
configuration. The most common is a transmissive negative image.
9. Considerations for attaining a 3.0 Volt LCD module:
IC: Choose the ICs that can be driven at 3.3V or less. Below is a list of IC's that can
accomplish this requirement:
Controller:
KS0066U 2.7 ~ 5.5V
KS0070B 2.7 ~ 5.5V
HD44780U 2.7 ~ 5.5V
Driver:
http://www.powertipusa.com/qa.htm
11/10/2004
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