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1、AResearch&FabricationofPackagingTechnologyforHighPowerWhiteLEDComparingwiththetraditionalincandescentandfluorescentlighting,thehighPowerwhiteLEDhasmanysignificantincomparableadvantagessuchasenergysaving,envirorunentalprotection,longlifeandsoon.Itrepresentsthedevelopmentdirectionofgreenlighting,
2、andismovingintothefieldoflightingrapidly.Fromthepackagingtechnologyof1Whigh-bowerwhiteLED,thecostandperformanceofseveralmethodswereanalyzedandcomparedforwhitelightLED.Basedonthis,usingthe“bluechip&YAGphosphor"forproducingwhitelightLEDisthefinalselectionwithitsgoodperfounanceandproperprice.There
3、sultsshowthatinimprovingthelightemittingefficiency,unilounityandstabilityofhigh-powerwhiteLED,itneedsfurtherdevelopmentofnewmaterialsandnewtechnology.IntroductionLEDusesemiconductorchipsofsolidaslightemittingmaterials,theuseofelectriclight-emitting.Asalightsource,LED'sadvantagesisinenergysaving
4、,environmentalprotectionandlong-livedthreeaspects.LEDdoesnotdependonheatingfilamenttolight-emitting,energyconversionefficiencyisveryhigh,intheoryonly10%oftheenergyconsumptionofincandescent.comparedwithfluorescent,LEDcanbeupto50%oftheenergysavingeffect.Specialsurveyshowedthattheannualelectricity
5、consumptionofChina'slightingismorethan300billion,toreplaceallincandescentlampswithLEDorinpartortoreplacethefluorescentlamp,cansave1/3ofthelightingelectricity,meansthatthesavingof1000billionkwh,representingthefull-year'sgeneratingcapacityofThreeGorgesProjectwhichinvestmentofmorethan200billion.Us
6、ingLEDtoreplacefluorescentlamps,bamboolampstoavoidthebreakdownofaspillofmercurypollution,moreoverwasteandmanufacturingbackplaneLED(CopperCladAluminum)reusecanberecycled.LEDbysolidpackage,thestructureisdeep-set,lifeexpectancycanbeuptoh.Inaddition,LEDalsohasalowoperatingvoltage,powerconsumptionin
7、small,highluminousefficiency,responsetimeisveryshort(ns-grade),purelightcolor,lightweight,smallsize,suchasaseriesofcharacteristicsofrapiddevelopment,especiallyhigh-powerhigh-brightnesswhitelightLEDoftheinvention,bytheinsiderasthe"
