场发射显示器能量消耗研究(英文)-豆柴文库

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场发射显示器能量消耗研究(英文)
ResearchonEnergyConsumptionofFieldEmissionDisplays
Introduction
Aselectronicdeviceshavebecomeanindispensablepartofdailylife,energyconsumptionhasbecomeanimportantconsiderationformanufacturersandconsumers.Amongelectronicdevices,displaydevicesconsumeasignificantamountofenergy,andreducingtheirenergyconsumptionhasbecomeanimportantchallenge.Fieldemissiondisplays(FEDs)areapromisingalternativetotraditionaldisplaytechnologiesduetotheirlowpowerconsumption.ThispaperwilldiscusstheenergyconsumptionofFEDsindetail.
PrincipleofFEDs
FEDsworkontheprincipleoffieldemission,whereelectronsareemittedfromasharptipandacceleratedtowardsaphosphor-coatedscreenbyastrongelectricfield.Thistechnologyeliminatestheneedforbulkycathoderaytubes(CRTs)andbacklightunits(BLUs)usedinliquidcrystaldisplays(LCDs)andorganiclight-emittingdiodes(OLEDs),respectively.FEDsconsistofanarrayofmicroscopictipsarrangedonacathodeandaphosphor-coatedanodeplacedatashortdistancefromthetips.Whenavoltageisappliedacrossthecathodeandanode,electronsareemittedfromthetipsandstrikethephosphor-coatedanode,producinglight.
EnergyConsumptionofFEDs
TheenergyconsumptionofFEDsisaffectedbyvariousfactors,suchasthesizeandnumberoftheFEDs,thevoltageappliedacrossthecathodeandanode,andtheefficiencyofthephosphorcoating.ThepowerconsumptionofFEDscanbecalculatedasfollows:
PowerConsumption=VoltagexCurrent
ThevoltageappliedtoFEDsrangesfromafewhundredvoltstoafewkilovolts,dependingonthesizeandnumberoftheFEDs.ThecurrentrequiredtoilluminatethephosphorcoatingofFEDsisintheorderofafewmicroamperes,makingFEDsconsumesignificantlylesspowerthanotherdisplaytechnologies.Forexample,a24-inchLCDmonitorconsumesaround50wattsofpower,whileanFEDmonitorofthesamesizeconsumesonlyaround20watts.
AdvantagesofFEDs
ThelowpowerconsumptionofFEDsoffersseveraladvantages,suchaslongerbatterylifeforportabledevices,reducedenergycostsforbusinesses,andreducedcarbonfootprintforindustries.Inaddition,FEDsofferseveralotheradvantagesoverLCDsandOLEDs,suchasfasterresponsetime,widervi