TFT LCD 驱动原理与系统

按一下以編輯母片標題樣式,按一下以編輯母片,第二層,第三層,第四層,第五層,*,TFT LCD,驅動原理與系統,TFT LCD,驅動原理與系統,液晶及液晶顯示器簡介,TFT LCD,驅動原理,影響,TFT LCD,畫面品質的因素,TFT LCD Driver IC,LCD,數位界面簡介,背光板簡介,未來趨勢與走向,被動式,/,主動矩陣式液晶顯示器,Passive/Active Matrix LCD,Y,electrode,X,electrode,Pixel,The Color Pixel of TFT LCD,Color Filter Substrate,TFT Substrate,White Light,Color Light,R,G,B,B,G,R,Clc,Clc,Clc,Arrangement of Color Filter,R,G,B,R,G,B,R,G,B,R,G,B,R,G,B,R,G,B,G,R,B,G,R,B,G,R,B,R,B,G,R,B,G,R,B,G,R,G,R,G,G,B,G,B,R,G,R,G,G,B,G,B,R,G,R,G,W,B,W,B,R,G,R,G,W,B,W,B,Stripe,Triangle,G,R,B,G,R,B,G,R,B,G,R,B,G,Mosaic,Aperture Ratio,a-,Si,Drain electrode,Gate electrode,Insulator,Source electrode,n,+,a-,Si,Adjacent gate electrode,Insulator (dielectric substance),Display electrodes,TFT pixel,Effective area: 40.7%,Capacitor,TFT LCD,驅動,基本驅動波形,極性反轉,(polarity inversion),- Frame, row, column, dot,電容耦合驅動,-,二階,三階,四階,Timing Chart of TFT LCD,S,Frame Time,Time,Gate,1,2,3,N,1H,TFTL LCD,S,Driving Method,1,2,3,4,5,1,+,+,+,+,+,2,+,+,+,+,+,3,+,+,+,+,+,4,+,+,+,+,+,5,+,+,+,+,+,1,2,3,4,5,1,2,3,4,5,1,2,3,4,5,1,+,+,+,+,+,2,3,+,+,+,+,+,4,5,+,+,+,+,+,1,2,3,4,5,1,2,+,+,+,+,+,3,4,+,+,+,+,+,5,1,2,3,4,5,1,+,+,+,2,+,+,+,3,+,+,+,4,+,+,+,5,+,+,+,1,2,3,4,5,1,+,+,2,+,+,3,+,+,4,+,+,5,+,+,1,2,3,4,5,1,+,+,+,2,+,+,3,+,+,+,4,+,+,5,+,+,+,1,2,3,4,5,1,+,+,2,+,+,+,3,+,+,4,+,+,+,5,+,+,Frame N Columns,Frame N+1 Columns,Frame N Columns,Frame N+1 Columns,Column Inversion,Dot Inversion,Frame N Columns,Frame N+1 Columns,Frame N Columns,Frame N+1 Columns,Frame Inversion,Row Inversion,Direct Driving of TFT,LCDs,DC Bias,of Common,1 Frame / 1 Line,GaryScal,Voltage,V63,V62,.,.,.,.,.,.,.,.,V1,V0,V0,V1,.,.,.,.,.,.,.,.,V62,V63,Vcom,Ac ModulationAddressing of TFT,LCDs,1 Frame / 1 Line,Common,Waveform,Graylevel,Voltage,V0,V0,V1,V1,V2,V2,V63,V62,V62,V63,Direct Driving Vs,Vcom,Modulation,Direct Driving,Frame , Row , Column & pixel inversion available,Cancel crosstalk & remove flicker,：,image quality,Improve Power dissipation,Vcom,Modulation,Available Frame & Row inversion,Poor Power dissipation,影響,LCD,畫面品質的因素,Horizontal Crosstalk,Vertical Crosstalk,Shading Crosstalk,液晶電容的效應,液晶電容,C,LC,會隨液晶作用電壓的改變而變化,，,因此在驅動液晶時會有殘存的,DC,成份,，,其所造成的影響,Image Sticking.,Picture Flicker.,液晶作用電壓大時，液晶分子趨向平行電場方向排列,液晶作用電場小時，液晶分子趨向垂直電場方向排列,V,p,= ,V,gd,V,gd,C,gd,V,ghl,C,gd,+ C,s,+ C,C,gd,V,ghl,C,gd,+ C,s,+ C,Horizontal Line Crosstalk,R,G,B,Csc,Csc,Csc,Color Filter Substrate,B,A,Signal of A Line,Signal of B Line,Common Waveform,Difference of Effective Voltage in B Line,Black Level,Gray Level,Gray Level,Horizontal Area Crosstalk,B,A,Signal of A Line,Signal of B Line,Common,Waveform,V15m),Data-to-data skew tolerance 1 clock cycle,TMDS,TMDS (Transition Minimized Differential Signaling)is an interface standard based on PanelLink Technology developed by Silicon Image, Inc.,Swing,Control,Encoder/,Serialized,PLL,Graphic,Controller,Termination,Control,Recovery/,Decorder,/,Desirializer,PLL,LCD,Panel,Data,Data,DE,DE,Controls,Controls,Clock,Clock,TX1(Green),TX0(Blue),TX2(Red),Clock,24,5,24/36,5,VCC,VCC,Parallel,Data,(CMOS),Parallel,Data,(CMOS),TMDS I/F,Host,Monitor,Block Diagram of TNDS,DVI,DVI (digital visual interface),Promoted by DDWG,Intel, IBM, HP, Compaq, NEC, Fujitsu, silicon image,Dual channel TMDS,Support VGA to QXGA,Pixel clock：25mhz 330mhz,DVI,DVI:,Molex 24 + 5 pin connector pin assignment,pin,Signal Assignment,pin,Signal Assignment,pin,Signal Assignment,1,TMDS Data2-,9,TMDS Data1-,17,TMDS Data0-,2,TMDS Data2+,10,TMDS Data1+,18,TMDS Data0+,3,TMDS Data2/4 Shield,11,TMDS Data1/3 Shield,19,TMDS Data0/5 Shield,4,TMDS Data4-,12,TMDS Data3-,20,TMDS Data5-,5,TMDS Data4+,13,TMDS Data3+,21,TMDS Data5+,6,DDC Clock,14,+5V power,22,TMDS Clock Shield,7,DDC Data,15,Ground(return for +5V,Hsync,and Vsync),23,TMDS Clock+,8,Analog Vertical Sync,16,Hot Plug Detect,24,TMDS Clock-,C1,Analog Red,C2,Analog Green,C3,Analog Blue,C4,Analog Horizontal Hync,C5,Analog Ground (analog,R,G,&Breturn,),Pin 1,Pin 24,Pin 8,Pin 17,C1 C2,C4,GVIF,GVIF(gigabit video interface),Promoted by SONY,Allows using small connector and long cable(10m),Only one pair differential signal used,Support 24bit/pixel, XGA,Pixel clock：25mhz 65mhz,400mv voltage swing,DC balancing,Using 2pair, support to SXGA,Conclusion,Interface transits from analog to digital,Cost dominate transition time,Notebook LVDS,LCD monitor, PC graphics card DVI,EMC is still a big issue,High resolution is digitals world!,