LED yog ib qho khoom siv semiconductor, uas muaj cov hauv qab no:
Teeb pom kev zoo diodes: Thaum cov hluav taws xob hauv LED raug txhaj rau hauv P-type semiconductor siv lead ua, cov electrons thiab kab noj hniav yuav ua rau cov nyhuv sib xyaw thiab tsim cov photons.
 
Lub hom phiaj: LED tuaj yeem ua tiav cov xim sib txawv thiab ci ntsa iab los ntawm kev siv tshuab ua haujlwm.
 
Tswj: LED tuaj yeem tswj tsis tau xws li glowing xim thiab brightness los ntawm kev tswj voltage, tam sim no thiab lwm txoj kev.