1、Driver IC 簡(jiǎn)介簡(jiǎn)介作者作者:黃新富黃新富 2002/8內(nèi)容大綱內(nèi)容大綱1. 目的2.Driver IC 材料構(gòu)成3. Driver IC 簡(jiǎn)介4. 總結(jié)P 3P 4P 9P10P15P161.目的:此課程針對(duì) TFT LCD的回路，做一簡(jiǎn)易的介紹，使參加研討會(huì)的人員，概略得知 TFT LCD的驅(qū)動(dòng)原理。2. Drive IC 材料購(gòu)成 Drive IC (單品) Chip IC Drive IC Film Drive IC (組品)PCB接合端 ( DATA INPUT端 )Cell 出力端 ( DATA OUTPUT端) Vsync frequencyfV-60.0075.00Hz

2、Hsync frequencyfH-48.3560.00KHzMain frequencyfDCLK-32.5039.37MHzItemSpecificationDisplay area304.128(W) x 228.096(H)Number of Pixel1024(H) x 768(V)Pixel pitch0.297(H) x 0.297(V)Pixel arrangementRGB Vertical stripeDisplay colorTrue 6 bitDisplay modeNormally whiteSurface treatmentAntiglare, Hard-Coati

3、ng(3H)Weight1500(max)Back-light4-CCFLs at up & Bottom sideInput signal2-ch TTLTFT LCD 規(guī)格TFT LCD 動(dòng)作頻率專業(yè)用語(yǔ)簡(jiǎn)介:光的三原色 : 紅(R)、綠(G)、藍(lán)(B)常用顯示模式 : VGA(640*480) SVGA(800*600) XGA(1024*768) SXGA+(1400*1050) UXGA(1600*1200)掃瞄頻率 : 每秒切換的頁(yè)數(shù)(動(dòng)畫的要求，每秒須切換60個(gè)畫面以上)掃瞄線:垂直掃瞄(Vertical-sync)、水平掃瞄(Horizontal-sync)全彩 : 1

4、千6百萬(wàn)色 ( R、G、B各為 8 Bits的Data，28 * 28 * 28 =16，777，216色) (現(xiàn)行公司的產(chǎn)品R、G、B各為 6 Bits的Data，26* 26* 26=262144色)CLK : 每個(gè) pixel 的掃瞄頻率POL : 反轉(zhuǎn)訊號(hào)OE : 遮蔽訊號(hào)MOS FET 驅(qū)動(dòng)方式 GateSourceDrain工作原理:Gate閘 : ON/OFF的控制開關(guān)Source閘 : Data InputDrain閘 : Data OutputCs on Gate Mode液晶電容儲(chǔ)存電容共通電極:Clc:Cs:Common:Cgd寄生電容液晶畫素電容:Clc+CsClcCs

5、Common (N-1)thScan LineNth Scan LineCgd Source Line 2資料電極ClcCsCommon (N-1)thScan LineNth Scan LineCgd Source Line 1資料電極ClcCsCommon (N-1)thScan LineNth Scan LineCgd Source Line 3資料電極 Gate Line 1Gate Line 2Source Driver ( X-TAB )Gate Driver ( Y-TAB )Cell 內(nèi)部線路圖1 2 3 4 512345Frame NColumnsLines+ + + + +

6、 + + + + + + + + + + + + + + + +1 2 3 4 512345Frame N+1 ColumnsLines 1 2 3 4 512345Frame NColumnsLines+ + + + + + + + + + + + +1 2 3 4 512345Frame N+1 ColumnsLines + + + + + + + + + 1 2 3 4 512345Frame NColumnsLines+ + +1 2 3 4 512345Frame N+1 ColumnsLines + + + + + + + + + + + + + + + + + + + 1 2 3

7、 4 512345Frame NColumnsLines+ + +1 2 3 4 512345Frame N+1 ColumnsLines+ + + + + + + + + + + + + + + + + + + +Column InversionDot InversionRow InversionFrame InversionTFT 驅(qū)動(dòng)方式1. Frame Inversion 2. Row Inversion 3. Column Inversion 4. Dot Inversion3. Driver IC 簡(jiǎn)介 X-TAB Functional Block DiagramOutput Bu

8、fferDigital to Analog Converter384 x 6 Bit x 2Line Latch64 Bit Shift RegisterBufferDF0 DF5DE0 DE5DD0 DD5DC0 DC5DB0 DB5DA0 DA5RVRS2RVRS1DEIO1DEIO2L/RDCLKVoltage ReferenceFor Gamma Correction(GH63/GH47/GH31/GH15/GH0GL63/GL47/GL31/GL15/GL0)LPLOADOUT1OUT384.66666666666666666POLC.10258 bits bidirection s

9、hift registerDecoderOutput BufferSTV1ASTV2ACPVL/ROSVLVEEOUT1OUT258OUT2 258 bits bidirection shift registerSTV1BSTV2BXOEXAOVCOMY-TAB Functional Block DiagramX-TAB(XGA Mode)OUT258OUT1OUT257OUT2 COM2COM2NCNCNCNCNCNCVEENCVLNCVcomNCSTV 1ASTV 2AOSL/RXOEVDDCPVVSSSTV 1BSTV 2BNCVcomNCVLNCCOM1COM1NCNCNCNCNCNC

10、VEEDriver IC 接線圖Y-TAB 配線圖 : Input 約40 Pin / Output約260 Pin(XGA 模式)X-TAB(XGA Mode)OUT384DEIO2DF5DF4DF3DF2DF1DF0DE5DE4DE3DE2DE1DE0DD5DD4DD3DD2DD1DD0LPVDD1L/RGL63GL47GL31GL15GL0VDD2VSSGH0GH15GH31GH47GH63VSSDCLKLOADPOLCRVRS1RVRS2DC5DC4DC3DC2DC1DC0DB5DB4DB3DB2DB1DB0DA5DA4DA3DA2DA1DA0DEIO1OUT1OUT383OUT2 X-TAB 配線圖 : Input 約70 Pin / Output約400 Pin(XGA 模式)TFT LCD 回路簡(jiǎn)介1024x768260K Color LCDWFP2373Gate DriverSource DriverSource Driver258WFP2373Gate Driver258LCD ControlASICReferencegeneratorDataControl fromGraphicsController4.總結(jié)