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世(shi)界(jie)上(shang)第(di)一(yi)台(tai)液(ye)晶(jing)顯(xian)示(shi)器(qi)出(chu)現(xian)在(zai)七(qi)十(shi)年(nian)代(dai)初(chu),被(bei)稱(chen)之(zhi)為(wei)TN型(xing)液(ye)晶(jing)顯(xian)示(shi)器(qi)(Twisted Nematic,扭(niu)曲(qu)向(xiang))。八(ba)十(shi)年(nian)代(dai),STN型(xing)液(ye)晶(jing)顯(xian)示(shi)器(qi)(Super Twisted Nematic,超(chao)扭(niu)曲(qu)向(xiang)列(lie))出(chu)現(xian),同(tong)時(shi)TFT液(ye)晶(jing)顯(xian)示(shi)器(qi)(Thin Film Transistor,薄(bao)膜(mo)晶(jing)體(ti)管(guan))技(ji)術(zhu)被(bei)提(ti)出(chu)STN和(hu)TN的(di)顯(xian)示(shi)原(yuan)理(li)相(xiang)同(tong),隻(zhi)是(shi)液(ye)晶(jing)分(fen)子(zi)的(di)扭(niu)曲(qu)角(jue)度(duo)不(bu)同(tong)。
向(xiang)列(lie)型(xing)液(ye)晶(jing)夾(jia)在(zai)兩(liang)片(pian)玻(bo)璃(li)中(zhong)間(jian),這(zhe)種(zhong)玻(bo)璃(li)的(di)表(biao)麵(mian)上(shang)先(xian)鍍(du)有(you)一(yi)層(ceng)透(tou)明(ming)而(er)導(dao)電(dian)的(di)薄(bao)膜(mo)以(yi)作(zuo)電(dian)極(ji)之(zhi)用(yong),然(ran)後(hou)在(zai)有(you)薄(bao)膜(mo)電(dian)極(ji)的(di)玻(bo)璃(li)上(shang)鍍(du)表(biao)麵(mian)配(pei)向(xiang)劑(ji),以(yi)使(shi)液(ye)晶(jing)順(shun)著(zhuo)一(yi)個(ge)特(te)定(ding)且(qie)平(ping)行(hang)玻(bo)璃(li)表(biao)麵(mian)的(di)方(fang)向(xiang)排(pai)列(lie)。液(ye)晶(jing)的(di)自(zi)然(ran)狀(zhuang)態(tai)具(ju)有(you)90度(duo)的(di)扭(niu)曲(qu),利(li)用(yong)電(dian)場(chang)可(ke)使(shi)液(ye)晶(jing)旋(xuan)轉(zhuan),液(ye)晶(jing)的(di)折(she)射(she)係(ji)數(shuo)隨(sui)液(ye)晶(jing)的(di)方(fang)向(xiang)而(er)改(gai)變(bian),影(ying)響(xiang)的(di)結(jie)果(guo)是(shi)光(guang)經(jing)過(guo)TN型(xing)液(ye)晶(jing)後(hou)偏(pian)極(ji)性(xing)發(fa)生(sheng)變(bian)化(hua)。
隻(zhi)要(yao)選(xuan)擇(ze)適(kuo)當(dang)的(di)厚(hou)度(duo)使(shi)光(guang)的(di)偏(pian)極(ji)性(xing)剛(gang)好(hao)改(gai)變(bian)90°,就(jiu)可(ke)利(li)用(yong)兩(liang)個(ge)平(ping)行(hang)偏(pian)光(guang)片(pian)使(shi)得(dei)光(guang)完(wan)全(quan)不(bu)能(neng)通(tong)過(guo)。而(er)足(ju)夠(gou)大(dai)的(di)電(dian)壓(ya)又(you)可(ke)以(yi)使(shi)得(dei)液(ye)晶(jing)方(fang)向(xiang)與(yu)電(dian)場(chang)方(fang)向(xiang)平(ping)行(hang),這(zhe)樣(yang)光(guang)的(di)偏(pian)極(ji)性(xing)就(jiu)不(bu)會(kuai)改(gai)變(bian),光(guang)就(jiu)可(ke)通(tong)過(guo)第(di)二(er)個(ge)偏(pian)光(guang)片(pian)。
於(yu)是(shi),就(jiu)可(ke)控(kong)製(zhi)光(guang)的(di)明(ming)暗(an)了(liao)。前(qian)麵(mian)說(shui)了(liao),STN型(xing)液(ye)晶(jing)與(yu)TN型(xing)液(ye)晶(jing)的(di)顯(xian)示(shi)原(yuan)理(li)相(xiang)同(tong),隻(zhi)是(shi)它(ta)將(qiang)入(ru)射(she)光(guang)旋(xuan)轉(zhuan)180~270度(duo),而(er)不(bu)是(shi)90度(duo)。而(er)且(qie),單(shan)純(chun)的(di)TN型(xing)液(ye)晶(jing)顯(xian)示(shi)器(qi)本(ben)身(shen)隻(zhi)有(you)明(ming)暗(an)兩(liang)種(zhong)變(bian)化(hua)。而(er)STN液(ye)晶(jing)則(ze)以(yi)淡(dan)綠(lv)色(shai)和(hu)橘(ju)色(shai)為(wei)主(zhu)。但(dan)如(ru)果(guo)在(zai)傳(zhuan)統(tong)單(shan)色(shai)STN液(ye)晶(jing)顯(xian)示(shi)器(qi)加(jia)上(shang)一(yi)彩(cai)色(shai)濾(lv)光(guang)片(pian),並(bing)將(qiang)單(shan)色(shai)顯(xian)示(shi)矩(ju)陣(zhen)中(zhong)的(di)每(mei)一(yi)像(xiang)素(su)分(fen)成(cheng)三(san)個(ge)子(zi)像(xiang)素(su),分(fen)別(bie)通(tong)過(guo)彩(cai)色(shai)濾(lv)光(guang)片(pian)顯(xian)示(shi)紅(hong)、綠(lv)、藍(lan)三(san)原(yuan)色(shai),就(jiu)可(ke)以(yi)顯(xian)示(shi)出(chu)色(shai)彩(cai)了(liao)。
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