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1、ABSTRACTABSTRACTWiththerapiddevelopmentofMobilefield，thevalueofmovableprojectorhasbeenattractedmoreandmoreattentionintermsofitsapplication.Withthein-depthresearches,theuseofmicro-projectormovefromconceptstateintopeople’sdailylife.Therearevariouskindsofpro
2、jector,likemulti-functionprojector,cellphoneprojectorcomeintopeople’severydaylife,whichunveiltheneweraofprojector.Althoughtheprojectorhasbeenwidelyusedforsometime,unavoidableproblem,however,comesalong.ThepapercomesfromtheUESTC-NOKIAinternationalcooperatio
3、n.Consideringthematurityofbothprojectorstechnologyandapplication,itisstillnotmatureenoughintopracticaluse.Therefore,thetechnologyofmicro-projectorhasalongwaytogo,andwhichattractsusmostintermsofresearchesisheatdissipationproblem.Thispaperfocusontheheatdiss
4、ipationandrelevantproblemofprojector,usingDLPimbeddedmicro-projectorforstructurethermalanalysis.Inordertoensurethereliabilityofthemicro-projector,theheatdissipationstructuresareoptimizedthroughtransientthermalmodelingaswellasthecomparisonwithsteadystateth
5、ermaldissipationdesign.Themaincontentoftheresearchworkwereasfollows:1.Summarizetheprincipleofimbeddedmicro-projectoranditsinternalstructures,identifythemainheatsource,andanalyzesteadystateheatdissipationofmicro-projectorfortheresearchesintransientheatdiss
6、ipation.2.Establishequivalentthermalmodelformicro-projectorthoughtheintroductionofcomparativesimpleandprecisePLCC，andlumpedparametermodel.3.Establishtransientthermalmodel,setparameters,partitionlocalgridforDLP.Describethetemperaturedistributionofmicro-pro
7、jectorunderlinerconditionat1.3timesoftheratedpower.Thengivethetransientthermaldistributionundertheconditionofsteptype.Testandverifytheaccuracyofthetransientthermaldistributionanddiscussthepossiblefactorsforerrors.4.Optimizetheeffectofheatdissipationbyadju
8、stingstructuralparametersofheatsinksandincreasingheatdissipationareasothatitmayaffordabetterthermalIIABSTRACTreliabilityandfulfillabetterexperienceforenduser.Keywords:Micro-projector,Transientthermalmodel,FLOTHERM,H
