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,Technology for Easy Living !,Page,*,STN,工作原理讲解,LCD,技术支援部,沈文全,2006/02/27,1、STN-LCD,工作原理,STN,工作原理,STN,产品的驱动波形,字符,IC,的应用问题,2、,SUNPLUS Driver,认识,2,LCD,的基本结构：,液晶盒中间会均匀撒布间隙物质,spacer,支撑两片玻璃，使之间间隙均匀。,Glass Substrate,Liquid Crystal,Glass Substrate,Polarizer,/Diffusive Reflector,Polarizer,spacer,3,偏光片的功能：,4,定向层的作用：,可使液晶分子呈,现规则,的排列,达,到扭,转,的功能,；,不同型,态,之,LCD,有不同的扭,转,角,。,5,LCD,的工作原理：,液晶与偏光片的效应组合,未加电压,:,当光线通过上层偏光片,以一特定的方向进入,LCD,后,藉由液,晶的扭转将光路径旋转至特定之角度,而得以穿透下层偏光片的轴向,。,施加电压,:,原有液晶分子排列的状态经过施加电压后,已失去了旋转光,路径的功能,因此光线无法透过直交的偏光片,。,6,T,V,100%,90%,10%,TN,TN,STN,STN,Vns,Vs,Vns,Vs,Bright,Dark,V = T,TN & STN V-T Curve,7,BIAS,的波形算法：,A type、 B type,波形1/,a,从,COM,算出： (,Vlcd, V1)/(,Vlcd, V5)=1/a,A type,B type,STN,驱动波形,8,BTYPE,：,com,seg,1,frame,v0,v1,v2,v3,v4,v5,9,LCD Bias Circuit Structure,VLCD,V1,V2,V3,V4,OP,OP,OP,OP,R,R,R,R,NR,V0,OP,Bias Adjust,V,1,V,2,V,3,V,4,V,5,V,LCD,The Optimum LCD Bias Voltage equation :,(,V,1,2,-,V,2,2,) + (,V,5,2,-,V,4,2,) = 0,VSS,STN IC,常见应用问题-,crosstalk,10,字符,IC,框图：,11,CGRAM,字符,code,编辑：,12,字符,IC Time ：,13,字符,IC,应用电路图：,14,SUNPLUS Driver IC,介绍：,15,SUNPLUS Driver IC,介绍：,SPLC095A SPLC093CD,字符型,IC,SPLC501C SPLC502A,点阵型,IC,SPLC782A (SPLC783A SPLC780D),字符型,IC,16,SPLCxxx,SEG,COM,CGROM,(,Chr,.),Vdd,VLCD,(V),IF,Internal,OSC.,Boost,Package,Ref.,SPLC100A,40,-,-,2.7/5.5,11,1,-,-,COB,QFP,KS0065,HD44100,SPLC063A,80,-,-,2.7/5.5,11,1,-,-,COB,QFP,KS0063,HD66100,SPLC780D,40,16,(256),2.7/5.5,11,4/8,Y,-,COB,QFP,KS0066,SED1278,HD44780,SPLC782A,80,16,(256),2.4/5.5,6,4/8,Y,-,COG,-,SPLC783A,80,16,(256),2.7/5.5,12,4/8,Y,-,COB,KS0070,SPLC093C,80,26,(256),2.4/5/5,6,1/4/8,Y,7.2,V,COG,KS0093,SPLC095A,80,24,10080,(252),2.4/3.6,7,1,Y,-,COG,NJU6637,FCS2339,SPLC701B,120,54,1072896,(8128),18432,(256),2.0/3.6,12,1/4/8,Y,2/3/4,COG,HD66732,17,SPLCxxx,SEG,COM,DDRAM,(bits),Vdd,VLCD,(V),IF,Internal,OSC.,Boost,Package,Ref.,SPLC501C,132,65,8,580,2.85/5.5,12,1/8,Y,2/3/4,COG,SED1565,SPLC502A,132,65,8,580,1.8/3.6,12,1/8,Y,2/3/4/5/6,COG,TCP,SED1565,SPLC506B,102,65,6,630,1.8/3.6,9,I2C,Y,2/-/5,COG,PCF8548,SPLC560C,160,0,-,2.5/5.5,30,4/8,-,-,COG,TCP,LH1560 ST8016,0,160,SPLC562C,240,0,-,2.5/5.5,30,4/8,-,-,COG,TCP,LH1562 ST8024,0,240,SPLC563A,240 320,0,-,2.5/5.5,5.5,4/8,-,-,COG,TCP,HD66130 ST8632,SPLC564A,0,160/200 /240,-,2.5/5.5,43,-,-,-,COG,TCP,HD66137 ST8600,SPLC086A,80,0,-,28,1/4,-,-,COB,QFP,KS0086,0,80,SPLC320A,Pure controller,410,880,2.7/3.6,-,1/8/16,-,-,LQFP,-,18,ITEM,KS0093,SPLC093C,SPLC093D,VDD,2.4 5.5,V,2.4 5.5,V,2.4 5.5,V,VLCD,4.0V 6.0V,4.0V 6.0V,4.0V 6.0V,LCD Frame Rate,100,Hz,100,Hz,75,Hz,Cursor Blink Speed,1.0,sec,1.6,sec,1.0,sec,VLCD Accuracy, 3%, 3.5%, 1.5%,PAD Pitch,80u,75.6,u,47,u,Software,Instruction Set,Compatible with KS0093,Compatible with KS0093,Reduce Capacitor,NO,NO,V1, V2, V3, V4,No capacitor Need,SPLC093D Competitive Table,相关厂商,IC,比对介绍,19,ITEM,NT7532,ST7565S,S1D15605,SPLC501C,SPLC502A,VDD,2.4 3.5,V,1.8 3.3,V,2.4 5.5,V,2.8 5.5,V,1.8 3.6,V,Booster,x2, x3, x4,x2, x3, x4, x5,x6,x2, x3, x4,x2, x3, x4,x2, x3, x4, x5,x6,LCD Bias,1/5, 1/6, 1/7, 1/8, 1/9,1/5, 1/6, 1/7, 1/8, 1/9,1/7, 1/9,1/7, 1/9,1/5, 1/6, 1/7, 1/8, 1/9,LCD Duty,1/33, 1/49, 1/55, 1/65,1/33, 1/49, 1/53, 1/55, 1/65,1/65,1/65,1/33, 1/49, 1/55, 1/65,VLCD Accuracy, 3%, 1.5%, 3%, 3%, 1%,PAD Pitch,55,u,58,u,71u,60,u,50,u,Software Instruction Set,Compatible with SED1565,Compatible with SED1565,Compatible with SED1565,Compatible with SED1565,Compatible with SED1565,Reduce Capacitor,NO,NO,NO,NO,V1, V2, V3, V4,No capacitor Need,SPLC502A Competitive Table,相关厂商,IC,比对介绍,20,SPLC701B vs. HD66732,相关厂商,IC,比对介绍,21,SPLC506B vs. PCF8548,相关厂商,IC,比对介绍,22,SPLC5,50A,vs.,SSD1788,SPLC56,3A,/SPLC56,4A,相关厂商,IC,比对介绍,23,SPLC56,0C,/SPLC56,2C,相关厂商,IC,比对介绍,24,Thanks!,25,
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