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The blue LEDs Epistar with 110 lumens per watt to achieve a brightness led tool 1800-2000 milli candela (mcd). For the mobile phone keypad lights are 800 to 900 mcd necessary, for seven-inch led tool LCD panels 1200 to 1300 mcd, for mobile phone screens 1400-1500 mcd and for the notebook backlight 1700-1800 mcd.
Powerful yellowish-orange glowing LEDs with wavelength (Wd) of 610 or 615 nanometers led tool (nm) are usually led tool made of aluminum gallium indium phosphide (AlGaInP), bluish-white high-power LEDs from indium gallium nitride led tool (InGaN). The following led tool list shows the developmental steps leading manufacturers:
Because of the high production cost of high power LEDs are quite expensive. The brighter they are, the less the manufacturers of displays, mobile phones and lighting technology have to use it, noticed "Digitimes".
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