Driver Chip介绍.ppt

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1、Driver Chip介紹 4/2/20231OutlineBasic acknowledgeAttention for choosing IC The principle of gate driver IC The principle of source driver IC Q&A4/2/20232Block Diagram of LCD Module4/2/20233TFT LCD Driving IntroductionSource DriverGate DriverClcdCstoreTFT LCDs Pixel Schematic-Cs on Common CstoreCommonC

2、storeCommonPixelGate LineSource LineTFT4/2/20234The Panel Structure:Package PCBLSIGlass Substrate(TFT LCD)TCPCopper-foil lead lineSoldering AnisotropicConducting filmGold bumpGate electrode conducting lineSource electrode conducting lineSealantTFTLiauid crystalTCP:Tape Carrier PackageCOG:Chip On Gla

3、ssCOF:Chip On Film4/2/20235Driver IC RequiredGate Driver Output FormatVGASVGAXGASXGAUXGA120/128456810150/154458192/200346256/25834No.of Drivers RequiredSource Driver Output FormatVGASVGAXGASXGAUXGA2408101620300/309103845810402612No.of Drivers Required4/2/20236Typical LCD Voltage 4/2/20237Gate Driver

4、 IntroductionAlso call scan driver or row driverFunctionRead in start signal or first line mark signal.Progressively turn on the TFT pixel gate line by lineLet the analog voltage of data line write into pixelTurn off the pixel during the hold period 4/2/20238Gate Driver Key Spec.Driver scheme:2/3 le

5、velChannel:240/256/300/308Operation digital voltage:2.5/3.3Analogy voltage range:max.35/40/45 VOperation frequency:max.200k HzOE function:XON function:Package:TCP/COF/COG4/2/20239Block Diagram of Gate IC4/2/202310Power Sequence for Gate IC4/2/202311Example of I/O TimingCPVSTV1OEOUT1OUT2OUT3OUT4OUT5O

6、UT6OUT263STV2XON123 4 5 6 7 262 263 264 2654/2/202312RC Load Simulation4/2/202313Affection of RC DelayGN-1-OutputGN-OutputS-Output6V2V6V4/2/202314How to Use OE Function4/2/202315How to Use OE FunctionGN-1-OutputGN-OutputS-OutputOEDisadvantage：Charge time reduce4/2/202316Application of XON4/2/202317D

7、C Driving of TFT-LCDVcomV6V5V4V3V2V1V0V0V1V2V3V4V5V6Gary levelone line4/2/202318AC Driving of TFT-LCDGate SignalVcomV6V5V4V3V2V1V0V0V1V2V3V4V5V6V7V74/2/202319Source Driver Key Spec.Interface:TTL/RSDS/mini-LVDSBits:6/8Channel:384/402/420/480Operation voltage:2.5/3.3Operation frequency:max.85M HzInver

8、sion mode:dot/column/row/frameAnalogy power:8 11/13.5/16.5Gamma reference voltage:10/14/16/18Gamma curve:normal white/normal blackCharging sharing function:Repair line function:Package:TCP/COF/COG4/2/202320Block Diagram of Source IC4/2/202321RSDS Timing Diagram4/2/202322Charge Sharing4/2/202323Timing of Source Driver4/2/202324R-String&DAC4/2/202325Column Inversion4/2/202326Repair Line Function4/2/202327Q&A4/2/202328