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1、TFT-LCD驱动原理简介TFT-LCD驱动原理简介NPD_EE:査敏佳 Data:2009-8-6上海天马上海天马显示原理显示原理上海天马上海天马TFT-LCD面板等效电路TFT-LCD面板等效电路上海天马上海天马One of Sub-PixelOne of Sub-Pixel上海天马上海天马驱动波形驱动波形上海天马上海天马驱动波形-Feedthrough驱动波形-Feedthrough上海天马上海天马Feedthrough计算公式Feedthrough计算公式上海天马上海天马Driver IC Function BlockDriver IC Function Block上海天马上海天马Ga
2、te/Source/Com电压产生Gate/Source/Com电压产生上海天马上海天马Gamma(Source)参考电压设置Gamma(Source)参考电压设置上海天马上海天马Gate参考电压设置Gate参考电压设置上海天马上海天马VCOMPP参考电压设置VCOMPP参考电压设置上海天马上海天马VCOMC参考电压设置VCOMC参考电压设置上海天马上海天马模式选择模式选择上海天马上海天马18Bit CPU Interface18Bit CPU Interface上海天马上海天马16Bit CPU Interface16Bit CPU Interface上海天马上海天马9Bit CPU Int
3、erface9Bit CPU Interface上海天马上海天马8Bit CPU Interface8Bit CPU Interface上海天马上海天马CPU InterfaceCPU Interface驱 动 ICF P CLCD PanelD15:0CS,RD,WR,RSFMARKRESETVCC,IOVCC,GNDBLULCM_IDLEDA, LEDK1, LEDK2, LEDK3, LEDK4Aging board51 Board /fpga boardTPXL,XR,YU,YD上海天马上海天马18/16Bit Register读写18/16Bit Register读写上海天马上海天马
4、8/9Bit Register读写8/9Bit Register读写上海天马上海天马18/16Bit GRAM读写18/16Bit GRAM读写上海天马上海天马8/9Bit GRAM读写8/9Bit GRAM读写上海天马上海天马RGB InterfaceRGB Interface驱 动 ICF P CLCD PanelD23:0VS,HS,DE,DCLKSPIRESETVCC,IOVCC,GNDBLULCM_IDLEDA, LEDK1, LEDK2, LEDK3, LEDK4Aging board51 Board /fpga boardTPXL,XR,YU,YD上海天马上海天马SPI Inte
5、rface Timing-WriteSPI Interface Timing-Write上海天马上海天马SPI Interface Timing-ReadSPI Interface Timing-Read上海天马上海天马RGB TIMING-DE ModeRGB TIMING-DE ModeCLKDEDATAInvalid Data1st line2nd linelast lineInvalid Data12*525=6300 CLK1050CLKNext Frame272*525=142800 CLKOne FrameTotal 525 CLK Per line480 CLK43 CLK2 CLK12345480InvalidInvalid Data480 pixels per lineCLKDEDATA271 linePre Framelast line1050CLK2 CLK上海天马上海天马THE ENDTHE ENDQ & A