6σ_concept.pptx

6σ_concept.pptx

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s61/16LGEConfidentialUnderstanding6（SixSigma）LGElectronics/PCDiv.QAGroupLGEInternalOnlys62/16LGEConfidentialContents.Whatis6activity?

1.Whatarethestatistics?

2.SolutionofthePracticalProblem3.Whatisthe6concept?

4.6Application5.6ActivityProcess6.Comparewithothertools7.6Philosophy.Whyshouldwedo6?

Quality&FailureRate.HowtoLaunch6?

KeyFactorforSuccessof6?

.WhatisRolledThroughputYield?

s63/16LGEConfidential1.Whatarethestatistics?

Population&SampleSamplePopulationN1,000Measure10samples（Spec.:

1004）Youmaysay“ThisPopulationisGoodbecauseallthesamplesdataarelocatedbetweenLSL&USL.BUT,Ifyouestimatethedefectrateusingstatisticalanalysis,thispopulationhastheprobabilityof2.8%defectsperunit.Thenthisis-wecall-“Anepidemic”qualitydefectlevel.Measuringdefectrateonprocessthroughanexpandingstatisticalconcept,wecanusemeasuringprocesscapability.USL（UpperSpecLimit）LSL（LowerSpecLimit）.Whatis6activity?

96979899100104101102103Totalinspectionisimpossible!

Statisticalvariables（mean,variance）estimatepopulations64/16LGEConfidentialUSLUSLTUSLUSLTUSLUSLTPrecisebutnotAccurateAccuratebutnotPreciseShiftingtoTarget&ReducingVariationShifttoTargetReducingVariation2.SolutionofthePracticalProblem.Whatis6activity?

Objectof6isShifttoTargetReducingvariations65/16LGEConfidential6QualitymeansthatareaoftheestimatednormaldistributionislocatedbetweenUSL&LSLwith6.Inthatcaseareaoftheoutlierspec.（Inotherwordsestimateddefects）isjust3.4PPM.*:

StandardDeviationStatisticindexmeasureshowmuchdataapartfromtargetvalue3.4ppmTargetUSLLSL+6-6+3-36.68%3.whatisthe6concept?

.Whatis6activity?

StatisticalDefinitionof636s66/16LGEConfidential63.4523346,210366,8072308,537PPM1misspelledwordinallofthebookscontainedinasmalllibrary$340indebtednessper$100millionsassets1.8minutesperyear1.5misspelledwordsperpageinabook$6.7millionsindebtednessper$100millionsassets24daysperyear.Whatis6activity?

6astheBusinessStrategy3.whatisthe6concept?

s67/16LGEConfidentialInallDesign,Manufacturing,andSVCprocessesApplyingfor6statisticTools&ProcessesTofindfactorscausingdefectsActingtheAnalysisandImprovementThroughtheDefectReduction,IncreaseYield&TotalCustomerSatisfactionManagementInnovationToolcontributestoManagementOutputAchieving3.4PPM（3.4DefectsPerMillion）Whatis6activity?

PPM:

PartsperMillion.Whatis6activity?

6astheActivity3.whatisthe6concept?

s68/16LGEConfidential4.6ApplicationSelectingCTQtomeetcustomerneedsDecisionreasonableToleranceGuaranteeoftheCTQscapabilityanalysisImprovementseriousproblemusingS/WRealTimeMonitoringsystemCTQControlsystemImprovementcycletimeandaccuracyCostImprovementGuaranteefortheDesigncompletionindevelopingstageQualityassuranceinmanufacturingstageMaximizingforsales&SVC6isatoolthatappliestoallbusinesssystems-Design,Manufacturing,SalesandSVC.Whatis6activity?

R&D6Manufacturing6De-signSales&SVCMfg.6Transaction6DesignMfg.Sales&SVCs69/16LGEConfidentialIdentifyCustomer-DrivenCTQ（CriticaltoQuality）CharacteristicsIdentifyKeyProcessesthatcauseDefectsinaCTQCharacteristicsForEachProductorProcessCTQMeasure,Analyze,Improve,&Control6isarigorousanalyticalprocessforsolvingproblem!

5.6ActivityProcess.Whatis6activity?

1.Whoareyourcustomers?

-Internal/External2.Whatdoyouprovideyourcustomers?

3.Whatiscriticaltoqualityforyourcustomers?

1.WhatareyourinternalprocessesforprovidingyourproductorserviceCTQstoyourcustomers?

2.Wheredodefectsoccurintheseprocesses?

DDPracticalProblemMeasurementSystemYieldCalculationProcessMappingCalculationBenchmarkingParetoChart&StratificationCause&EffectDiagramDOEBrainstormingActionWorkoutTechniquesPilotingControlMechanismControlChartProceduresMMAAIICC6ActivityProcess（manufacturing&Transaction）*CTQ（CriticalToQuality）:

Yourcustomersfeelthatcharacteristicofproduct,serviceorprocessiscritical.*D:

Defines610/16LGEConfidentialExampleofdevelopmentprocessappliedbyR&D6ExampleofdevelopmentprocessappliedbyR&D6R&D6Kick-OffEvaluationmeetingforpresentconditionEvaluationmeetingforbasicconceptEvaluationmeetingforplanningconfirmE/SdrawingconfirmCusto-merNeedsSurveyQFDS-1SpareCTQSelec-tionSimilarprocessDatagatheringZValueofCTQAnalysisMeetingforCTQCheckZValueoptimize,DesignimproveQFDS-2DesignFMEAProcessFMEADevelopmentProcessE/SmakingDevelopmentdrawingconfirmIncomePartsE/SQualitymeetingP/LMakingP/LQualityMeetingIncomepartsP.PMakingP.PQualitymeetingCTQDatafornewpartsgatheringActivityforprocessimprove-mentCTQfornewpartsConfirmCTQdeci-sionZValueofCTQconfirm5.6ActivityProcess.Whatis6activity?

s611/16LGEConfidential-Define/Measurement-VarianceofCTQ-Presentcon-ditionAnalysis-ImprovedbyexpertsIdea-Controledbycontrolchart-Process4McontrolMeasure-Symptoms-Frequency-Analysisforstatistics-Effectanalysiscausedfactors-OptimizingconditionbystatisticalanalysisOthers6-DiscreteData-Difficulttoapplypracticalproblembecauseofcomplexity-Discrete+Continuousdata-Easytoapplybecauseofsupportingstatisticalsoftware.AnalysisImprovementControl-ControledbyPTS（CTQ,Benefits）Focusingexperience/technology*PTS:

ProjectTrackingSystem*ByImprovementProcess.Whatis6activity?

6.Comparewithothertoolss612/16LGEConfidential6.ComparewithothertoolsDetectingprocessdefectsProductmanagingcomparewithspec.JudgingeachpersonsKnow-HowManualDatagathering&analysisControlprocessvariationJudgingthestatisticDataSimple&EffectiveanalysisusingtheS/WPreventionControlvitalfewfactorsManagingToolImprovementToolSelectingLineDoprocessFMEA-SelectingCostissueprocessviewofcustomerConformCTQprocessSortingtheprocess-Justneedcontrolprocess-Importantcontrolprocess-Lawapplicationprocess-Variationimprovement100ppm/6applicationaccordingtosortingprocess100ppm/6.Whatis6activity?

100ppm6100ppm/6Applications613/16LGEConfidentialWedontknowwhatwedontknow.Ifwecantexpresswhatweknowintheformofnumbers,wereallydontknowmuchaboutit.Ifwedontknowmuchaboutit,wecantcontrolit.Ifwecantcontrolit,weareatthemercyofchance.7.6Philosophy.Whatis6activity?

s614/16LGEConfidentialOursurvivalisdependentupongrowingthebusiness.Ourbusinessgrowthislargelydeterminedbycustomersatisfaction.Customersatisfactionisgovernedbyquality,price,anddelivery.Quality,price,anddeliveryarecontrolledbyprocesscapability.OurProcesscapabilityisgreatlylimitedbyvariation.Processvariationleadstoanincreaseindefects,cost,andcycletime.Toeliminatevariation,wemustapplytherightknowledge.Inordertoapplytherightknowledge,wemustfirstmeasureit.Measuretheproblem,wellgettherightknowledge.Whatis6activity?

7.6Philosophys615/16LGEConfidential“GenerallycontrolledF-CosthassmallportionconsideringofHiddenLoss”TraditionalF-Cost（EasyDefinition）InspectionScrapReworkRejectSVCLossOpp.SalesDeliveryDelayBrandImageDownOfficeLossOverStorageOverReworkLongcycletimeDesignChangePotential（Additional）F-Cost（Difficulttomeasure）.Whyshouldwedo6?

Quality&FailureRates616/16LGEConfidentialKeyFactorforSuccessof6NeedTopDownDriveNeedTopmanagementsstrongwillfor6.Topmanagementsstrongandperiodicalannouncementabout6policy.Allemployeesmustparticipate.Notonlymanufacturingpart,butalsonon-manufacturingpartshouldjointheprogramFocusonCustomersrequirements.6asPan-Companyscommonstandard.Commonlanguage.（CTQ,Cp,Z.）Avoidpersonaltranslationabout6.AllofGoalandtargetarerepresentedasscale.Basicprocessforallofprojects.HowtoLaunch6?

StartatCustomersvoice.CTQsfromCustomersvoice,Improvetheitemwhichhasbigimpactfirst!

NeedTrainingProgramforAllemployeesCompleteunderstandingfor6program.Hardtrainingforallemployees.Needresourceinvestmentresolutely.ConstructInfraNeedsuccessfulcasestudyproject.Resourcereformationfororganizationandsystem.Reasonableappraisalandrewardsystem.SystemrequirementMethodologys617/16LGEConfidential.WhatisRolledThroughputYield?

Rolledthroughputyieldisprobabilityratiotoacceptforallprocesses.FinalGoodProcessDefectRatioLossbyun-controlInputProcess1:

99%AcceptratioProcess2:

92%Process3:

93%FinalInspection:

97%RTYControlProcessdefectratioControl*RTY:

RolledThroughputYieldRTY=0.99X0.92X0.97X0.97=85.7%ObjectProductivityelevationthroughqualityimprovementApplyDefectofallprocesses,EquipmentModelChangeLossTool6Method1person1Project,TeamactivityAddedImprovementforhiddenfactory