LED and CCFL – TFT-LCD backlight, CCFL and LED two sources. Between CCFL and LED, the LED is a DC, low voltage; CCFL is the high voltage (600 V), of course, a smallarea of the CCFL has low pressure, but generally there are more than 300-400 volts.LED light source depending on the size and application, and free distribution. CCFL is relatively fixed, it needs high beam led, more diffusion material to achieve the dispersion of light,brightness uniformity to meet the requirements.
From the extension perspective, (a) LED wider color gamut and color saturation can be done more than 105%, high beam led, the contrary CCFL is relatively narrow, the most they can do about 70%; (b) LED very fast, can help the LCD to eliminate tailing phenomenon; and (c)a defect in the LCD is the “black screen” is not black with LED dynamic control can solve this problem; (d) The LED current can be adjusted; (e) The LED is green products do not contain mercury, it is a solid light, shock resistance, high beam led, low voltage safety. LED in the future is likely to be a wide range of applications.
On the problems of life, the life of the LED, although very long, but if the user is overheating, high beam led, or will lead to a decline in service life, and now we take a dynamic approach to control, to make the life of the LED can be done more than 100,000 hours, led high bay, according to the drive different to meet different needs. CCFL typically only 20,000 to 50,000 hours of life.
Characteristics of the CCFL and LED, high beam led, CCFL breakdown voltage and operating voltage is relatively high, the voltage of the LED is very low. So the LED’s safety performance is very good.
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The classification of high beam led and CCFL