AMOLED

Advanced--mobilephonetechnologyReal•SamsungYOUMThekeytechnologies:1.SoftwareRadioTechnology2.3Ddisplaytechnologyofthemobileterminal3.Mobilesingle-chip4.TransparentOLEDtechnology5.AMOLEDTechnologyOLEDDisplay1.PassiveMatrix(PMOLED)2.ActiveMatrix(AMOLED)Foreachpixel,theelectroncurrentflowsfromthecathodetotheanode，whilethesocalledholecurrentflowsinthereverseway．Electron-Holerecombinationreleasesphotonsintheorganicemissionmateriallayer.Thisshowsthatthelightisdirectlyproportionaltocurrent．MakingOLEDdisplaycurrentdrivendevices．OLEDStructureAMOLEDStructureAMOLEDTechnologyAMOLEDActiveMatrix/OrganicLightEmittingDiodeAMOLEDAdvantages1.ComparedtotraditionalLCD,AMOLEDscreenisverythinandcanbeintegratedtouchscreenlayer,anadvantagefortheultra-thinmachine.2.AMOLEDhasacertaindegreeofflexibility,comparedtotheglasssubstrateoftheLCDscreenshouldnotbedamaged.•DifferentfromLCDwhich,inprinciple,needstwoglasspanels,AMOLEDneedsnotupperglasspaneliftheorganicmaterialsandmetalcathodelayerinOLEDdeviceareprotectedfromenvironmentalwatervaporsorothergases.•ThesingleglassdevicegivesmanyuniquecharacteristicstoAMOLED.Owingtothesecharacteristics,paper-thinandbendablecarddisplayorfoldabledisplaycanberealized.3.HighresolutionAMOLEDwithpentilearrangement,differentfromtraditionalLCDasapixelisequaltothecollectionofthreesub-pixel,includered,greenandblue,forAMOLED,onepixelequaltoonegreen,0.5(blueandred),asubstantialemphasisongreen,makethepicturelookmorevivid.Video1.Pentile,withthisarrangement,theresolutionislessthanthenominal70%,inthecaseofalowerdpi,grainywillobvious,re-closelookcanclearlyseethecolorpointandtheedgeofthetextmade​​virtual.2.TheAMOLEDstressedgreen,whichcancauseitstoobrighteffect.3.AMOLEDisself-luminous,sointheprocessofagingandtheagingofthedifferentpixelsisnotthesamecausethebrightnessisnotthesame,sothatthecolorcastproblemevenmoreserious.AMOLEDWeaknessesTFT-LCDAMOLEDLCDandAMOLEDThecomparisonofcharacteristicsbetweenAMOLED(solidline)andAMLCD(dashedline)formobiledisplayVideoTHEAPPLICATIONSOFAMOLED1.Paper-thin,foldable,flexibleAMOLEDDifferentfromLCDwhich,inprinciple,needstwoglasspanels,AMOLEDneedsnotupperglasspaneliftheorganicmaterialsandmetalcathodelayerinOLEDdeviceareprotectedfromenvironmentalwatervaporsorothergases.ThesingleglassdevicegivesmanyuniquecharacteristicstoAMOLED.Owingtothesecharacteristics,paper-thinandbendablecarddisplayorfoldabledisplaycanberealized2.TransparentAMOLEDIfyou'veseenthemovieMinorityReportandamazedwiththetransparentdisplaycontrolledbyTomCruise,youcanexpecttoseetransparentOLEDpixelssoonerorlater.TransparentOLEDisdividedintotwotypesofboth-directionemittingtypeandsee-thoughtype.BothdirectionemittingtypeoftransparentOLEDshaveonlytransparentcomponents(substrate,cathodeandanode)and,whenturnedoff,areupto85percentastransparentastheirsubstrateandelectrode.WhenatransparentOLEDdisplayisturnedon,itallowslighttopassinbothdirections.MostapproachforthistypeoftransparentOLEDistousetransparentTFTs(thin-filmtransistors)madeofa100-nanometer-thicklayerofzinc-tinoxide,whichtransmitsmorethan90percentofvisiblelight.3.Technologicalissuesforlarge-sizedAMOLEDSincetheAMOLEDisself-emitting,lightemissioncanbecontrolledforeachpixelatextremelyhighspeed.Therefore,itisintrinsicallypossibleforAMOLEDtoexpresshighcontrast,blur-lessmotionfeatures,vividcolors,andwideviewingangle.Inthatsense,manypeoplesympathizethatAMOLEDcouldbeanultimatesolutionforfuture.However,thereshouldbesometechnologicalprogressesforthemassproduction,thekeytechnologicalissuesofTFTbackplane,colorpatterning,encapsulationandmaterialsforthelarge-sizedAMOLEDwillbediscussed.Technologicalissueofbackplane1.Amorphoussilicon(α-Si)TFT2.Low-temperaturepolycrystallinesilicon(LTPS)TFT3.OrganicTFT(OTFT)AMOLEDFeatureThankyou!FUTURE