2013年5月19日星期日

White LED light-emitting mechanism and characteristics TFT Display Module


A light-emitting mechanism
The single-chip white LED containing InGaN active layer the CaN emitting diode, it mainly has two light-emitting mechanism: one is a combination of a blue LED and a phosphor to produce white light, the yellow light emitted by blue and phosphorus mixed; another The species is through the combination of the ultraviolet LED and red, blue, and green phosphor to produce white light.OLED Module
2 Features
White LED main characteristics are: forward voltage drop to 3.5 V; luminous efficiency of 20lm / W, better than incandescent bulbs, inferior to fluorescent lamps (601m / W to 100 lm / W), 2004, the luminous efficiency can be increased to 60lm / w, close to the level of fluorescent lamps, which can be used extensively for the lighting market; the luminous flux 231m; small package size. White LED lighting market are enticing, the world LED manufacturers stepping up the development of high-power white LED, such as the development of high-power InGaN LED power up to 1 W to 2 W the existing LED 10 times. University of California, solid state lighting and display center plan developed before 2007 departure optical efficiency of 200lm / W white LED.TFT LCD Display

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