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1、led发光原理与芯片制造（PrincipleofLEDluminescenceandchipmanufacturing）Thisarticleiscontributedbyluckyzcy1985PdfdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.From:www.wikisemi.comTheprincipleofLEDluminescenceandchipmanufacturing
2、Reporter:......Www.wikisemi.com/bbsFrom:www.wikisemi.comThemaincontentsofthisreportincludethedevelopmentofLED,especiallythedevelopmentofchip,thestructureandluminescenceprincipleofLEDchip,themanufacturingprocessofLEDchip,thefutureofLEDpackagingandApplicationWww.wikisemi.com/bbsFrom:www.wikisem
3、i.comLEDdevelopment,chipdevelopmentThelight-emittingdiodeLight-EmittingDiodeismadeofafewlayersofdopedsemiconductormaterial.Whentheforwardcurrentisapplied,theelectronsintheNregionacquireenergy,andthebandgapoverthePNjunctioniscombinedwiththeholesinthepregiontoreleaseenergyintheformoflight.Devel
4、opmentofLEDInearly90s19651968197180s,red,yellowandgreencolorsredorangeyellowgreenblue,Geluminousefficiencyoflm/w0.111Luminousefficiencylm/wGaAsP,GaP,AlGaAs,GaAlInP,GaInNGaN101005020012.55590s90sWww.wikisemi.com/bbsFrom:www.wikisemi.comThedevelopmenthistoryofvisiblelightLEDWww.wikisemi.com/bbs
5、TheadvantagesofFrom:www.wikisemi.comLEDHighluminousefficiencyandenergysavingPowerconsumptionofincandescentlampsforthesamebrightness,10%-20%,1/2offluorescentlamps.GreenenvironmentalprotectionColdlightsourceisnoteasytobreak,noelectromagneticinterference,wastelessLongservicelifeLifeupto100thousa
6、ndhoursSolidlightsource,smallsize,lightweightandgooddirectivityAsingleunitsizeisonly3~5mmFastresponse,andcanwithstandallkindsofharshconditions,lowvoltage,smallcurrentWww.wikisemi.com/bbsFrom:www.wikisemi.comLightemittingdiodeindustrystructureRelatedmanufacturersUpstreamprocessdownstreampackag
7、eSubstrateLPEVPEMOVPESinglecrystal--GaAs,GaPwafer,--GaAs,AlGaAs,GaAsP,AlGaInPmanufacturingequipment,--LPE,VPE,MOVPEcrystalJapan:NichiaToyota,Gosei(TOYOTA)America:Lumileds,Cree:OsramTaiwan:JingyuanEurope,Yuanarsenic,Guangjia,china...Themainlan
