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1、红、黄、绿、蓝led的正常工作电压,和电流(Normalworkingvoltageandcurrentofred,yellow,greenandblueLED)Normalworkingvoltageandcurrentofred,yellow,greenandblueLEDlight-emittingdiodeLED(Light,Emitting,Diode)ledisasolidstatesemiconductordevicethatconvertselectricitydirectlyi
2、ntolight.TheheartofLEDisasemiconductorwafer,oneendofwhichisattachedtoabracket,oneendisnegative,andtheotherisconnectedtothepositiveelectrodeofthepowertoencapsulatetheentirewaferwithepoxyresin.Semiconductorwafersconsistoftwoparts,oneisPtypesemiconducto
3、r,inwhichtheholedominates,andtheotherendisNtypesemiconductor,whichismainlyelectronichere.Butwhenthetwosemiconductorsareconnected,theyformaP-Njunctionbetweenthem.Whenthecurrentpassesthroughthewireactingonthechip,theelectronsarepushedintothePregion.Int
4、hePregion,electronscombinewiththeholeandthenemitenergyintheformofphotons,whichistheprincipleofLEDluminescence.Thewavelengthoflight,thatis,thecoloroflight,isdeterminedbythematerialthatformstheP-Njunction.50yearsago,peoplehadalreadyunderstoodthebasickn
5、owledgethatsemiconductormaterialscanproducelight.Thefirstcommercialdiodewasproducedin1960.LEDisEnglishlightemittingdiode(lightemittingdiode)abbreviation,itsbasicstructureisanelectroluminescentsemiconductormaterials,placedonawirerack,thensealedwithepo
6、xyresinaroundthesolidpackage,sotoprotecttheinternalcorefunction,sotheseismicperformanceofLEDgood.ThecorepartoftheLEDisawaferconsistingoftypePsemiconductorsandtypeNsemiconductors.ThereisatransitionlayerbetweenthePtypesemiconductorandtheNtypesemiconduc
7、tor,calledthep-njunction.InsomePNjunctionsofsemiconductormaterials,theinjectedminoritycarrierscombinewiththemajoritycarrierstoreleaseexcessenergyintheformoflight,therebyconvertingtheelectricenergydirectlyintolightenergy.PNjunctionplusreversevoltage,t
8、heminoritycarrierisdifficulttoinject,soitdoesnotemitlight.Thediode,producedbyinjectionelectroluminescentprinciple,iscalledlight-emittingdiode,commonlyknownasLED.Whenitinapositivestateofthework(whichendswithforwardvoltage),thecurrentflowsfromtheLEDano