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1、附录AResearch&FabricationofPackagingTechnologyforHighPowerWhiteLEDComparingwiththetraditionalincandescentandfluorescentlighting,thehighPowerwhiteLEDhasmanysignificantincomparableadvantagessuchasenergysaving,envirorunentalprotection,longlifeandsoon.Itrepresentsthedevelopmentdirectiono
2、fgreenlighting,andismovingintothefieldoflightingrapidly.Fromthepackagingtechnologyof1Whigh-bowerwhiteLED,thecostandperformanceofseveralmethodswereanalyzedandcomparedforwhitelightLED.Basedonthis,usingthe“bluechip&YAGphosphor"forproducingwhitelightLEDisthefinalselectionwithitsgoodper
3、founanceandproperprice.Theresultsshowthatinimprovingthelightemittingefficiency,unilounityandstabilityofhigh-powerwhiteLED,itneedsfurtherdevelopmentofnewmaterialsandnewtechnology.IntroductionLEDusesemiconductorchipsofsolidaslightemittingmaterials,theuseofelectriclight-emitting.Asali
4、ghtsource,LED'sadvantagesisinenergysaving,environmentalprotectionandlong-livedthreeaspects.LEDdoesnotdependonheatingfilamenttolight-emitting,energyconversionefficiencyisveryhigh,intheoryonly10%oftheenergyconsumptionofincandescent.comparedwithfluorescent,LEDcanbeupto50%oftheenergysa
5、vingeffect.SpecialsurveyshowedthattheannualelectricityconsumptionofChina'slightingismorethan300billion,toreplaceallincandescentlampswithLEDorinpartortoreplacethefluorescentlamp,cansave1/3ofthelightingelectricity,meansthatthesavingof1000billionkwh,representingthefull-year'sgeneratin
6、gcapacityofThreeGorgesProjectwhichinvestmentofmorethan200billion.UsingLEDtoreplacefluorescentlamps,bamboolampstoavoidthebreakdownofaspillofmercurypollution,moreoverwasteandmanufacturingbackplaneLED(CopperCladAluminum)reusecanberecycled.LEDbysolidpackage,thestructureisdeep-set,lifee
7、xpectancycanbeuptoh.Inaddition,LEDalsohasalowoperatingvoltage,powerconsumptioninsmall,highluminousefficiency,responsetimeisveryshort(ns-grade),purelightcolor,lightweight,smallsize,suchasaseriesofcharacteristicsofrapiddevelopment,especiallyhigh-powerhigh-brightnesswhitelightLEDofthe
8、invention,bytheinsiderasth
