TFT-LCD驱动原理简介.ppt

驅動原理簡介系統設計 TFT LCD CircuitPlate WhydoesLCinversion FrameInversion LineInversion ColumnInversion DotInversion DrivingMethod Drivingmethodcomparison DrivingMethod DotInversion 1 2 3 4 B A A1 A3 A2 A4 B1 B3 B2 B4 Feed throughVoltage Cs Vgh Vgl 電荷守恒定理 LVDS Timing Controller Gamma Generator DC DC Converter V COM Driver UserConnector SourceDriver TFT LCDPanel GateDriver G1 G2 G3 G1050 D1 D2 D3 D4200 Source ControllerPCB ControlSignal VCOM Gamma DVDD AVDD Von Voff VideoSignal FPC Connector EEPROM I2C SXGA BlockDiagram 1 Sourcedrivera P01 SD LH165415 Feature 1 6bitdigitalinput 262 144colors R 0 0 0 0 0 0 1 1 1 1 1 1 G 0 0 0 0 0 0 1 1 1 1 1 1 B 0 0 0 0 0 0 1 1 1 1 1 1 2 Singleportinput3 11referencevoltages4 Modeselect 309 300output5 Shiftclockfrequency 55MHz Max 6 Lineinversion b P03 LH168A05 Feature 1 6bitdigitalinput 262 144colors 2 Dualportinput3 10referencevoltages4 384output5 Shiftclockfrequency 55MHz Max 6 Lineinversion 2 Gatedrivera P01 LH169402 Feature 1 256output2 Outputsignalmaskingfunction b P03 LH169203 Feature 1 Output 3002 Internalcountingsystem3 Modeselection 3modes 18 P03Drivingstructure Sourcedriver Tcon GSP1 GSP2 GCK GD1 GD2 GD3 GD4 CE1 LCE2 H CE1 HCE2 H CE1 HCE2 H CE1 LCE2 H Tcon GCK GSP GD1 GD2 GD3 P03Drivingstructure Gatedriver P01Drivingstructure Gatedriver VcomDCdriving Frame Row ColumnandDotinversionavailable VcomACdriving Frame Rowinversionavailable VESAVideoTimingSpec V Sync H Sync Data TimeScale放大 H Sync DotClock Data V Sync H Sync Vtotal 16 67ms TxIN12 17 TxIN0 5 TxIN6 11 R0 R5 B0 B5 Hsync Vsync ENAB G0 G5 RXIN0 6 RXIN0 5 TxIN18 TxIN19 TxIN20 Controller TTLPARALLEL TO LVDS PLL DS90C 363 LVDS TO PARALLELTTL PLL DS90CF364 RXIN1 9 RXIN1 8 RXIN2 12 10 RXIN2 11 RXCLKIN 15 10 RXCLKIN 14 RxOUT12 17 RxOUT18 RxOUT19 RxOUT20 RxOUT0 5 RxOUT6 11 R0 R5 B0 B5 Hsync Vsync ENAB G0 G5 Internalcircuits RxCLKOUT CK CLK TxCLKIN Computerside TFT LCDside InterfaceblockdiagramUsingreceiver DS90CF364 Nationalsemiconductor CorrespondingTransmitter DS90C363 DS90C383 Nationalsemiconductor GammacorrectionVoltage CRT GammacorrectionVoltage LCD GammacorrectionVoltage DAC DriverIC DigitalData AnalogSignal s1 s2 sn VG1 Dn GammaVoltage VGn D1 GammacorrectionVoltage 0 32 64 128 192 240 254 255 DC DCConverterCircuit ASICCircuit