Hantronix, Inc.

TFT LCD Modules
OLED Modules
Graphic Modules
Character Module
Custom Glass LCD Panel

Back Light

The following table compares the various back light options. Use this as a guide in choosing the type of back light, if any, you want with your LCD.
 
TYPE OF BACKLIGHT VISIBILITY POWER CONSUMPTION COST RFI GENERATION BRIGHTNESS CONTROL COMMENTS
None
Not usable in low ambient light conditions
Best
(no power used)
Lowest
None
N/A
N/A
EL
Usable in all lighting conditions
Very good 30mW
Good
Some (at low frequency)
Fixed brightness
Best for battery powered instruments
LED
Useable in all lighting conditions
Good 60mW
Good
None
Adjustable over wide range
Most popular on small displays
CCFL
Not usable in high ambient light conditions
Fair 700mW
Most costly
Some (at high frequency)
Adjustable over limited range
Most popular on larger graphic displays
 
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