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FUJIPOLY403.DESIGNINGTHECONNECTORHOLDEROncetheZEBRAstyleanddesignhavebeendecidedupontwolastconsiderationsshouldberesolvednamely-SupportoftheZEBRAconnectorinitsoperatingposition-Applicationofpressureontoconnectorheightdimensiontocausedeflectionandpropercontacttotheconductivecontactpads.ThemostcommonalternativesareamongthefollowingASelf-SupportingZEBRAconnectorACustomHolder-foryourspecificconfigurationClampingorfasteningdevices3.1STANDARDSUPPORTEDSIZES3.2DIMENSIONINGASTANDARDORCUSTOMCONNECTORHOLDERThesupportedconnectortypicallycontainsathinelastomeric0.020x1d.51mmwidestripattachedtoeitheroneorbothsides.Itisaspongeorsolidsiliconerubbersupportmediumwhichallowsalowercompressionforceoverawiderangewhilealsoprovidingagreaterwidth-to-heightratio.Thusthefree-standingstanceismorestableespeciallyascompressionisintroduced.CarbonandSilverFilledStandardDimensionsin.mmmin.max.width0.0501.270.1573.44height0.0501.271.00025.4length0.2506.359.000229.0carbon5.000127.0silver3.3DESIGNINGTHEBEZELa.holderwidthlipwidthb.holderlengtha.HolderRetainerwidthDetermineLCDlipwidthaswellasclearanceonthePCboardallowedtoaccommodatetheLCD.b.HolderlengthHoldershouldextendaminimumof0.1x1d2.5mmbeyondtheedgesofthefrontoftheglassoftheLCDandorthePCboardpadlengthsinordertoprovidesupportandproperpositioningandplacementofaligningpinsoftheholder.Wherewallthicknessoftheholdermustbethinandlengthofcontactareaisinexcessof2.5x1d63.5mmitmaybenecessarytoprovideabridgeorseparatorintheholderslotat2.5x1d63.5mmintervalsorthewallthicknessoftheframeoneithersideoftheslotmustbeadequatetoinhibitinwardx1cbowingx1d.DesignconsiderationsshouldprecludesuchbridgesorseparatorsfrominterferingwiththecontactsdesignedtobebetweenLCDandPCboard.ThedifferencebetweenslotwidthandZEBRAwidthshouldbeapproximately0.005x1d0.13mmtoallowforeasyinsertionandremoval.c.ThefollowingdesignconsiderationsshouldbeevaluatedPlasticHoldersReinforcedplasticispreferablebecauseitaffordssuperiorphysicalandelectricaldesignproperties.TemperaturerangeofLCDshouldbeconsistentwithtemperaturespecificationsofplasticselected.Chamfertheslotintheholderasshownintheillustration.Add0.005x1d0.13mmtothewidthoftheslotforinsertionoftheZEBRAconnector.Allowaminimumof0.050x1d1.3mmwallthicknessorgreaterasheightapproaches0.150x1d3.8mmLocatingpinsshouldbemoldedtobottomofZEBRAconnectorholdertoprovideregistrationbetweenLCDandthePCboardcontacts.SeeFigure1.MetalHoldersIndesigningmetalholdersspecifyaninsulatingbarrierorsupportsonthesidesoftheZEBRAconnectortoassureelectricalinsulationtoeliminateshortingetc.LocatingpinsShouldbeprovidedontheZEBRAconnectorholdertoprovideregistrationbetweenLCDandPCboardcontacts.CheckwiththeLCDmanufacturerregardingtheglasssealindesigningeitherplasticormetalholders.ProvideroomintheZEBRAconnectorholderfortheseal.Provisionshouldbemadetoaccommodateloosepolarizersandreflectorsifsuchelementsareincludedinthedesign.SupportorInsulationBarrierZEBRAConnectorIndeterminingdesignrequirementsforthebezelspecificdesignelementsshouldbeconsidereda.Usingseparationdistancefactorsdeterminerequiredheightofthebezel.LengthandwidthoftheLCDplusholdertoleranceswillestablishlengthandwidthdimensions.b.MusttheLCDbeprotectedIfsothebezelshouldincorporateacoverelement.c.IssealingrequiredtopreventdustandormoistureintrusionUnderwhatenvironmentalconditionswilltheLCDbeexpectedtofunctiond.WhatistheLCDviewingareaBesurethatbezeledgesdonotinterfere.e.IsmaskingrequiredforanyportionoftheLCDviewingareaf.CanthehousingorcaseoftheendproductbeusedtoprovidethenecessarypressureandprotectionrequiredfortheLCDPCboardconnectionIfsoabezelmaynotbenecessary.g.WilltherebeaneedforclampsorfastenersConsultFujipolyasadesignreferencesourceforbezelconfigurations.ZEBRADesignGuidelines-Connectors