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CCFL Backlight
Cold
Cathode Fluorescent Lamp, or CCFL, backlights offer low
power consumption and a very bright white light. The primary CCFL
configuration used in LCD backlighting is edge lighting. A cold cathode
fluorescent lamp is the light source with a diffuser distributing the light
evenly across the viewing area. CCFLs require an inverter to supply the 270
to 300 VAC @ 35KHz used by the CCFL tube. They are used primarily in graphic
LCDs and have a longer life - 10,000 to 20,000 hours - than EL backlights do.
Their biggest drawbacks are: cold weather will reduce the light output by as
much as 60%, they require an inverter to generate the 350VAC
please note that the inverters do not function well at low
temperatures, the light
intensity cannot be varied (it is either on or off), and vibration can
reduce the life expectancy of up to 50%.
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Office
in North America
Orient Display (North America) Limited
145 Royal Crest Court, Unit 42,
Markham, Ontario, Canada
L3R 9Z4
Tel: (905) 477-1166
Fax: (905) 477-1782
Email: services@orientdisplay.com
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