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1、附录AResearch&FabricationofPackagingTechnologyforHighPowerWhiteLEDComparingwiththetraditionalincandescentandfluorescentlighting,thehighPowerwhiteLEDhasmanysignificantincomparableadvantagessuchasenergysaving,envirorunentalprotection,longlifeandsoon.Itrepresentsthedevelopmentdirectionofgreenlig
2、hting,andismovingintothefieldoflightingrapidly.Fromthepackagingtechnologyof1Whigh-bowerwhiteLED,thecostandperformanceofseveralmethodswereanalyzedandcomparedforwhitelightLED.Basedonthis,usingthe“bluechip&YAGphosphor"forproducingwhitelightLEDisthefinalselectionwithitsgoodperfounanceandproperp
3、rice.Theresultsshowthatinimprovingthelightemittingefficiency,unilounityandstabilityofhigh-powerwhiteLED,itneedsfurtherdevelopmentofnewmaterialsandnewtechnology.IntroductionLEDusesemiconductorchipsofsolidaslightemittingmaterials,theuseofelectriclight-emitting.Asalightsource,LED'sadvantagesis
4、inenergysaving,environmentalprotectionandlong-livedthreeaspects.LEDdoesnotdependonheatingfilamenttolight-emitting,energyconversionefficiencyisveryhigh,intheoryonly10%oftheenergyconsumptionofincandescent.comparedwithfluorescent,LEDcanbeupto50%oftheenergysavingeffect.Specialsurveyshowedthatth
5、eannualelectricityconsumptionofChina'slightingismorethan300billion,toreplaceallincandescentlampswithLEDorinpartortoreplacethefluorescentlamp,cansave1/3ofthelightingelectricity,meansthatthesavingof1000billionkwh,representingthefull-year'sgeneratingcapacityofThreeGorgesProjectwhichinvestmento
6、fmorethan200billion.UsingLEDtoreplacefluorescentlamps,bamboolampstoavoidthebreakdownofaspillofmercurypollution,moreoverwasteandmanufacturingbackplaneLED(CopperCladAluminum)reusecanberecycled.LEDbysolidpackage,thestructureisdeep-set,lifeexpectancycanbeuptoh.Inaddition,LEDalsohasalowoperating
7、voltage,powerconsumptioninsmall,highluminousefficiency,responsetimeisveryshort(ns-grade),purelightcolor,lightweight,smallsize,suchasaseriesofcharacteristicsofrapiddevelopment,especiallyhigh-powerhigh-brightnesswhitelightLEDoftheinvention,bytheinsiderasth
