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1、附录AResearch&FabricationofPackagingTechnologyforHighPowerWhiteLEDComparingwiththetraditionalincandescentandfluorescentlighting,thehighPowerwhiteLEDhasmanysignificantincomparableadvantagessuchasenergysaving,envirorunentalprotection,longlifeandsoon.Itrepresentsthedev
2、elopmentdirectionofgreenlighting,andismovingintothefieldoflightingrapidly.Fromthepackagingtechnologyof1Whigh-bowerwhiteLED,thecostandperformanceofseveralmethodswereanalyzedandcomparedforwhitelightLED.Basedonthis,usingthe“bluechip&YAGphosphor"forproducingwhitelight
3、LEDisthefinalselectionwithitsgoodperfounanceandproperprice.Theresultsshowthatinimprovingthelightemittingefficiency,unilounityandstabilityofhigh-powerwhiteLED,itneedsfurtherdevelopmentofnewmaterialsandnewtechnology.IntroductionLEDusesemiconductorchipsofsolidaslight
4、emittingmaterials,theuseofelectriclight-emitting.Asalightsource,LED'sadvantagesisinenergysaving,environmentalprotectionandlong-livedthreeaspects.LEDdoesnotdependonheatingfilamenttolight-emitting,energyconversionefficiencyisveryhigh,intheoryonly10%oftheenergyconsum
5、ptionofincandescent.comparedwithfluorescent,LEDcanbeupto50%oftheenergysavingeffect.SpecialsurveyshowedthattheannualelectricityconsumptionofChina'slightingismorethan300billion,toreplaceallincandescentlampswithLEDorinpartortoreplacethefluorescentlamp,cansave1/3ofthe
6、lightingelectricity,meansthatthesavingof1000billionkwh,representingthefull-year'sgeneratingcapacityofThreeGorgesProjectwhichinvestmentofmorethan200billion.UsingLEDtoreplacefluorescentlamps,bamboolampstoavoidthebreakdownofaspillofmercurypollution,moreoverwasteandma
7、nufacturingbackplaneLED(CopperCladAluminum)reusecanberecycled.LEDbysolidpackage,thestructureisdeep-set,lifeexpectancycanbeuptoh.Inaddition,LEDalsohasalowoperatingvoltage,powerconsumptioninsmall,highluminousefficiency,responsetimeisveryshort(ns-grade),purelightcolo
8、r,lightweight,smallsize,suchasaseriesofcharacteristicsofrapiddevelopment,especiallyhigh-powerhigh-brightnesswhitelightLEDoftheinvention,bytheinsiderasth
