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A Brighter Solution
BACKLIGHTING




Technology

There are a variety of backlighting technologies available for LCD's. Whether a display requires backlighting depends upon the ambient light. The following are some common backlighting methods:

1. LED (matrix or edge lit)
2. EL Panel
3. Incandescent lamp
4. Fluorescent lamp
5. Light guide with reflector

TYPE

EL

LED

CCFL

FEATURE

  • Even brightness
  • Low heat
  • Thin and light
  • Inverter not required
  • Long life
  • High brightness
  • High heat generation
  • Long life time
  • Lower power consumption

LIFETIME

2,000 ~ 5,000 Hrs

20,000 ~ 100,000 Hrs

10,000 ~ 20,000 Hrs

INVERTER

Required when operating EL with battery or a DC power supply

Not required

Required

OPERATING TEMPERATURE
-20 C ~ 60 C

-20 C ~ 70 C

-20 C ~ 50 C

BACKLIGHT COLOR
  • Blue green
  • White
  • Yellow Green
  • Amber
  • Red
  • White
White
POWER CONSUMPTION Low power consumption Higher power consumption and heat generation for more LED diodes Power consumption 1.8 ~ 3W AC600 ~ 1000V / 30Khz
DRIVING VOLTAGE
AC 60 ~ 100V / 400Hz
2 ~ 24 V DC

DC-AC inverter

BRIGHTNESS

20 ~ 50 (cd/m2)

20 ~ 40 (cd/m2)

40 ~ 200 (cd/m2)

REMARKS

-

Bottom type:

- High brightness & applicable to middle size module

Edge lit type:

- Compact structure & low power consumption

CCFL inverter outputs very high voltage AC current. Please handle with care.


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