信息与通信TFT LCD基本原理课件

TFT-LCD基本原理与设计

课程大纲TFT-LCD簡介液晶的光电特性TFTLCDsA/C架构

TFTLCDs模組架构TFT-LCD驱动原理DrivingmethodDrivingwaveform电容效应TFT-LCD设计TFT-LCD基本原理与设计

课程大纲1主动矩阵式液晶显示器

AM-LCDsMonitorSystemLCDTimingControllerLCDPanelDataDriverScanDriverRGBDigitalDataGMA1~GMA181818PowerSupplyCircuitBacklightPowerSupplyBacklightR[5:0]G[5:0]B[5:0]HsVsCLKDE+5VGNDData&ScanDriverPowerSupplyDataDriversControlSignalsPCInterfacePCRGBHsVsTFT-LCDModulePCGMA1~GMA184A/DInterfaceorDigitalInterfaceScanControlSignals主动矩阵式液晶显示器

AM-LCDsMonitorSys2主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc3主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc4主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc5主动矩阵式液晶显示器

AM-LCDsPanelStructureClcTFTSubstrateColorFilterSubstrateRGBClcClcRBG主动矩阵式液晶显示器

AM-LCDsPanelStruc6主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc7TN型LCDs显示原理TN型LCDs显示原理8TNModeLCDsFieldON入射光偏光板液晶分子玻璃基板出射光之极化状态解偏板出射光未加电场OFF状态TNModeLCDsFieldON入射光偏光板液晶分9TN&STN电光转移曲线V-TCurve100%90%10%VnsSTNVsSTNVsTNVnsTNVTN&STN电光转移曲线V-TCurve100%9010In-Plane-SwitchModeLCDs偏光板解偏板液晶分子作用电极玻璃基板入射光作用电场方向出射光之极化状态未加电场“OFF”状态施加电场“ON”状态出射光In-Plane-SwitchModeLCDs偏光板解偏11VerticalAlignmentModeLCDs未加电场OFF状态施加电场ON状态入射光偏光板液晶分子玻璃基板出射光之极化狀态解偏板出射光VerticalAlignmentModeLCDs未加12ComparisonofLCModesStronglydependentonviewingangle低驱动电压視角窄小Off(White)On(Black)Slightlydependentonviewingangle广视角液晶反应速度慢Off(Black)On(White)画面对比低画面品质差Slightlydependentonviewingangle画面对比高广視角Off(Black)On(White)液晶反应速度快彩色画面显像佳TNIPSVAComparisonofLCModesStrongly13主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc14TFT-LCDModuleTTLLVDSPanelLinkSingalControllerDC/DCDirverICinvertorTFT-LCDBLX-PCDYPCBGammaGen.ComponentEMITFT-LCDModuleTTLControllerinv15TFTCharacteristicId1020Vg10E-610E-1110E-12-5-10TFTCharacteristicId1020Vg10E-16TFTLCDs等效电路RowDriversColumnDriver1H1HClcCsCsCsCsCsCsCsCsCsClcClcClcClcClcClcClcClcTFTLCDs等效电路RowDriversColumn17TimingChartofTFTLCDsFrameTimeGate123N1HL1L2L3DATATimingChartofTFTLCDsFrame18TFTLCDsDrivingMethodColumnInversionDotInversionRowInversionFrameInversionTFTLCDsDrivingMethodColumn19DirectDrivingofTFTLCDsDCBiasofCommonGrayScaleVoltageV0V1V2V62V63V63V62V2V1V01Frame/1LineDirectDrivingofTFTLCDsD20ACModulationAddressingofTFTLCDsV0V1V2V62V63V63V62V2V1V0CommonWaveformGraylevelVoltage1Frame/1LineACModulationAddressingofTF21TFTLCDs的电光效应

DirectAddressingTFTLCDs的电光效应

DirectAddressi22TFTLCDs的电光效应

ACAddressingTFTLCDs的电光效应

ACAddressing23PixelStructureofTFTLCDsClcCsClcCsCommonCommon(N-1)thScanLine(N-1)thScanLineNthScanLineNthScanLineCsonCommonModeCsonGateModeCgdCgd液晶电容儲存电容扫描电极资料电极共通电極MthDataLineMthDataLine资料电极扫描电极:Clc:Cs:Common:Cgd寄生电容液晶画素电容:Clc+CsPixelStructureofTFTLCDsClc24CsonCommon与CsonGate液晶画素TFTGateLineDataLineCsCs液晶画素TFTCommonCommonGateLineDataLineCsCsCsonCommonCsonGateCsonCommon与CsonGate液晶画素25TFTLCDsDrivingWaveform

CsonCommon(一)TFTLCD驱动波形(CsonCommon,Common=DCBias)TFTLCDsDrivingWaveform

Cs26TFTLCDsDrivingWaveform

CsonGateTFTLCDsDrivingWaveform

Cs27TFT电容效应的响应PixelCgdCgsCsdCsdbCsdbTFT电容效应的响应PixelCgdCgsCsdCsdbC28二階驱动方式的效应CsClcCgdCsdCgsVctCh(N-1)Ch(N)Vs垂直影像讯号水平扫描讯号Vg水平扫描讯号VgVshVslVstVthVth正极性驱动负极性驱动负极性驱动正极性驱动资料驱动晶片输出讯号电位液晶画素电位Vct=Vst-ΔVpΔVpBlack(+)White(+)White(+)Black(+)Black(-)Black(-)White(-)White(-)二階驱动方式的效应CsClcCgdCsdCgsVctCh(N29TFT补偿驱动法Ch(N-1)Ch(N)Vst=Vct影像讯号波形Vs水平脉波扫描波形VgeVgeVghl3LevelAddressingTFT补偿驱动法Ch(N-1)Ch(N)Vst=Vct影像30TFT-LCDModule设计(一)订定TFT-LCDModuleSpec--Resolution/Power/Dimension.VideoSignalFormat/ScanLinePeriod(Hs)/FramePeriod(Vs)TFT的ION/IOFF电流ION必须于一条水平扫描线时间将影像电压充入液晶电容(Clc)IOFF必须使充入液晶电容中的影像电容维持一个Frame的时间直流漂移(DCOffset)当ScanLine上GatePule关闭时,透过离散电容(Cgd,Cgs,Cds),对画素电极(PixelElectrode)所造成的Feedthrough效应.TFT-LCDModule设计(一)订定TFT-LCD31TFT-LCDModule设计(二)水平扫描脉线的RC时间常数高解析度时,必须降低RC时间常数,以利液晶电容之充放电.液晶的电光转移特性曲线(V-TCurve)必须量测LCDPanel正确之V-TCurve,以利GammaCorrection选择适合的驱动方式(CsonGateorCOM)考虑FeedThrough效应的补偿及VCOM电压的调整.驱动IC(Scan&Data)的选取针对LCM的解析度及LCDPanel的元件参数选用DriverIC.ControlPCB的设计

针对所选定的DriverIC,ControlPCB提供其所须之控制讯号.TFT-LCDModule设计(二)水平扫描脉线的RC32TFT-LCD基本原理与设计

课程大纲TFT-LCD簡介液晶的光电特性TFTLCDsA/C架构

TFTLCDs模組架构TFT-LCD驱动原理DrivingmethodDrivingwaveform电容效应TFT-LCD设计TFT-LCD基本原理与设计

课程大纲33主动矩阵式液晶显示器

AM-LCDsMonitorSystemLCDTimingControllerLCDPanelDataDriverScanDriverRGBDigitalDataGMA1~GMA181818PowerSupplyCircuitBacklightPowerSupplyBacklightR[5:0]G[5:0]B[5:0]HsVsCLKDE+5VGNDData&ScanDriverPowerSupplyDataDriversControlSignalsPCInterfacePCRGBHsVsTFT-LCDModulePCGMA1~GMA184A/DInterfaceorDigitalInterfaceScanControlSignals主动矩阵式液晶显示器

AM-LCDsMonitorSys34主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc35主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc36主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc37主动矩阵式液晶显示器

AM-LCDsPanelStructureClcTFTSubstrateColorFilterSubstrateRGBClcClcRBG主动矩阵式液晶显示器

AM-LCDsPanelStruc38主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc39TN型LCDs显示原理TN型LCDs显示原理40TNModeLCDsFieldON入射光偏光板液晶分子玻璃基板出射光之极化状态解偏板出射光未加电场OFF状态TNModeLCDsFieldON入射光偏光板液晶分41TN&STN电光转移曲线V-TCurve100%90%10%VnsSTNVsSTNVsTNVnsTNVTN&STN电光转移曲线V-TCurve100%9042In-Plane-SwitchModeLCDs偏光板解偏板液晶分子作用电极玻璃基板入射光作用电场方向出射光之极化状态未加电场“OFF”状态施加电场“ON”状态出射光In-Plane-SwitchModeLCDs偏光板解偏43VerticalAlignmentModeLCDs未加电场OFF状态施加电场ON状态入射光偏光板液晶分子玻璃基板出射光之极化狀态解偏板出射光VerticalAlignmentModeLCDs未加44ComparisonofLCModesStronglydependentonviewingangle低驱动电压視角窄小Off(White)On(Black)Slightlydependentonviewingangle广视角液晶反应速度慢Off(Black)On(White)画面对比低画面品质差Slightlydependentonviewingangle画面对比高广視角Off(Black)On(White)液晶反应速度快彩色画面显像佳TNIPSVAComparisonofLCModesStrongly45主动矩阵式液晶显示器

AM-LCDsPanelStructure主动矩阵式液晶显示器

AM-LCDsPanelStruc46TFT-LCDModuleTTLLVDSPanelLinkSingalControllerDC/DCDirverICinvertorTFT-LCDBLX-PCDYPCBGammaGen.ComponentEMITFT-LCDModuleTTLControllerinv47TFTCharacteristicId1020Vg10E-610E-1110E-12-5-10TFTCharacteristicId1020Vg10E-48TFTLCDs等效电路RowDriversColumnDriver1H1HClcCsCsCsCsCsCsCsCsCsClcClcClcClcClcClcClcClcTFTLCDs等效电路RowDriversColumn49TimingChartofTFTLCDsFrameTimeGate123N1HL1L2L3DATATimingChartofTFTLCDsFrame50TFTLCDsDrivingMethodColumnInversionDotInversionRowInversionFrameInversionTFTLCDsDrivingMethodColumn51DirectDrivingofTFTLCDsDCBiasofCommonGrayScaleVoltageV0V1V2V62V63V63V62V2V1V01Frame/1LineDirectDrivingofTFTLCDsD52ACModulationAddressingofTFTLCDsV0V1V2V62V63V63V62V2V1V0CommonWaveformGraylevelVoltage1Frame/1LineACModulationAddressingofTF53TFTLCDs的电光效应

DirectAddressingTFTLCDs的电光效应

DirectAddressi54TFTLCDs的电光效应

ACAddressingTFTLCDs的电光效应

ACAddressing55PixelStructureofTFTLCDsClcCsClcCsCommonCommon(N-1)thScanLine(N-1)thScanLineNthScanLineNthScanLineCsonCommonModeCsonGateModeCgdCgd液晶电容儲存电容扫描电极资料电极共通电極MthDataLineMthDataLine资料电极扫描电极:Clc:Cs:Common:Cgd寄生电容液晶画素电容:Clc+CsPixelStructureofTFTLCDsClc56CsonCommon与CsonGate液晶画素TFTGateLineDataLineCsCs液晶画素TFTCommonCommonGateLineDataLineCsCsCsonCommonCsonGateCsonCommon与CsonGate液晶画素57TFTLCDsDrivingWaveform

CsonCommon(一)TFTLCD驱动波形(CsonCommon,Common=DCBias)TFTLCDsDrivingWaveform

Cs58TFTLCDsDrivingWaveform

CsonGateTFTLCDsDrivingWaveform

Cs59TFT电容效应的响应PixelCgdCgsCsdCsdbCsdbTFT电容效应的响应PixelCgdCgsCsdCsdbC60二階驱动方式的效应CsClcCgdCsdCgsVctCh(N-1)Ch(N)Vs垂直影像讯号水平扫描讯号Vg水平扫描讯号VgVshVslVstVthVth正极性驱动负极性驱动负极性驱动正极性驱动资料驱动晶片输出讯号电位液晶画素电位Vct=Vst-ΔVpΔVpBlack(+)Whi