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OLED新一代顯示技術開始展現魅力

編輯:songqiuxia 2017-06-01 10:24:01 瀏覽:1291  來源(yuan):中投證(zheng)券

  新一代顯(xian)(xian)示(shi)(shi)技(ji)(ji)術(shu)OLED 走向商用(yong)。OLED 極有(you)(you)可(ke)(ke)能(neng)成為實用(yong)的(de)第三代顯(xian)(xian)示(shi)(shi)技(ji)(ji)術(shu)。人類(lei)(lei)80%的(de)信息量來自(zi)眼(yan)睛,顯(xian)(xian)示(shi)(shi)技(ji)(ji)術(shu)是(shi)當前人類(lei)(lei)獲取(qu)信息的(de)重要(yao)途(tu)徑,新一代顯(xian)(xian)示(shi)(shi)技(ji)(ji)術(shu)會給人類(lei)(lei)的(de)社會生活帶(dai)來巨大(da)變革,全球市(shi)場空間可(ke)(ke)能(neng)近萬億。OLED 的(de)核心競爭力是(shi)更(geng)輕(qing)薄和(he)可(ke)(ke)彎(wan)曲,由(you)此有(you)(you)望開啟柔性(xing)顯(xian)(xian)示(shi)(shi)時代的(de)大(da)門,成為VR 等新應(ying)用(yong)的(de)必選技(ji)(ji)術(shu)。OLED(OrganicLight-Emitting Diode)又稱為有(you)(you)機電激光(guang)(guang)(guang)(guang)(guang)顯(xian)(xian)示(shi)(shi)、有(you)(you)機發光(guang)(guang)(guang)(guang)(guang)半導體,與液晶顯(xian)(xian)示(shi)(shi)(LiquidCrystal Display, LCD)是(shi)不同類(lei)(lei)型的(de)發光(guang)(guang)(guang)(guang)(guang)原(yuan)理。OLED 無需(xu)背光(guang)(guang)(guang)(guang)(guang)燈,采(cai)(cai)用(yong)非常薄的(de)有(you)(you)機材(cai)料涂層和(he)玻璃基板,當有(you)(you)電流通過時,這些(xie)有(you)(you)機材(cai)料就會發光(guang)(guang)(guang)(guang)(guang)。而LCD 自(zi)身不能(neng)發光(guang)(guang)(guang)(guang)(guang),采(cai)(cai)取(qu)LED 作為其(qi)背光(guang)(guang)(guang)(guang)(guang)源,其(qi)結(jie)構自(zi)下而上包括:背光(guang)(guang)(guang)(guang)(guang)層、偏光(guang)(guang)(guang)(guang)(guang)片、TFT 基板、液晶層、彩色濾光(guang)(guang)(guang)(guang)(guang)片和(he)第二層偏光(guang)(guang)(guang)(guang)(guang)片,結(jie)構及(ji)其(qi)復(fu)雜。

  OLED 將成(cheng)為未(wei)(wei)來主流顯(xian)(xian)(xian)示(shi)(shi)(shi)技術。相(xiang)對于LCD,OLED 顯(xian)(xian)(xian)示(shi)(shi)(shi)具有幾(ji)大優勢(shi):1,OLED 自(zi)身發光(guang),相(xiang)對LCD 無(wu)(wu)需背(bei)光(guang)層和(he)液晶層,偏光(guang)片數量也會(hui)減少,因(yin)而(er)(er)結(jie)構(gou)(gou)更(geng)簡(jian)(jian)單(dan),更(geng)輕(qing)薄,其厚度僅為0.4mm,不及TFT-LCD 的一半;2 可(ke)(ke)(ke)靠性強(qiang):OLED 結(jie)構(gou)(gou)簡(jian)(jian)潔、全固(gu)態結(jie)構(gou)(gou),無(wu)(wu)真空、液體物質、可(ke)(ke)(ke)靠性強(qiang),抗(kang)震性優于LCD 器件(jian);3 可(ke)(ke)(ke)彎曲:可(ke)(ke)(ke)以做在柔(rou)性材料基板上,實現可(ke)(ke)(ke)彎曲顯(xian)(xian)(xian)示(shi)(shi)(shi);4 色域(yu)廣(guang),響(xiang)應(ying)快(kuai),適(shi)應(ying)穿戴(dai)設(she)備需求,色域(yu)范(fan)圍(wei)更(geng)廣(guang),NTSC 標(biao)準(zhun)色域(yu)可(ke)(ke)(ke)以達(da)(da)到110%,而(er)(er)LCD 只有70%~90%;5 視角(jiao)更(geng)廣(guang):OLED 自(zi)發光(guang)使得可(ke)(ke)(ke)視角(jiao)度可(ke)(ke)(ke)以達(da)(da)170度;6 響(xiang)應(ying)速度更(geng)快(kuai):OLED 顯(xian)(xian)(xian)示(shi)(shi)(shi)屏(ping)(ping)響(xiang)應(ying)速度遠遠超過液晶屏(ping)(ping),在顯(xian)(xian)(xian)示(shi)(shi)(shi)動態畫面時(shi)無(wu)(wu)拖尾現象,能(neng)夠明顯(xian)(xian)(xian)減輕(qing)播放運動畫面出現模糊現象,更(geng)適(shi)合VR 顯(xian)(xian)(xian)示(shi)(shi)(shi),防止眩暈;7、未(wei)(wei)來成(cheng)本可(ke)(ke)(ke)能(neng)會(hui)低于LCD, 由于結(jie)構(gou)(gou)簡(jian)(jian)單(dan),未(wei)(wei)來隨(sui)著(zhu)技術發展,成(cheng)本可(ke)(ke)(ke)能(neng)更(geng)低。因(yin)此在未(wei)(wei)來OLED逐漸替(ti)代LCD 是大概率事件(jian)。

  OLED 的(de)(de)技術(shu)(shu)發展及(ji)應(ying)用(yong):OLED 面(mian)板可以分(fen)為AMOLED 和PMOLED,其中AMOLED 使用(yong)TFT 陣列獨立(li)驅(qu)動(dong)控制每(mei)個像素(su),驅(qu)動(dong)電壓低(di),發光材料(liao)壽命較長;PMOLED 在(zai)(zai)工(gong)(gong)業方面(mian)也有很(hen)(hen)廣泛(fan)的(de)(de)應(ying)用(yong)。AMOLED 技術(shu)(shu)優勢明顯(xian),尤其是輕薄,低(di)功耗以及(ji)柔性(xing)技術(shu)(shu)優勢能夠(gou)(gou)滿足移動(dong)終端(duan)產品對于待機時(shi)間,產品便攜性(xing)等要求(qiu),正在(zai)(zai)成為智(zhi)能手機等中小尺寸高端(duan)顯(xian)示(shi)主流(liu)方案,技術(shu)(shu)演(yan)進(jin)路(lu)徑明確。PMOLED 在(zai)(zai)工(gong)(gong)業方面(mian)也有很(hen)(hen)廣泛(fan)的(de)(de)應(ying)用(yong)。VR/AR、可穿(chuan)戴(dai)設(she)(she)(she)備(bei)等新興(xing)應(ying)用(yong)領域(yu)也對顯(xian)示(shi)提出了新的(de)(de)技術(shu)(shu)需(xu)求(qiu),VR/AR 設(she)(she)(she)備(bei)由于頭(tou)顯(xian)視距(ju)較短以及(ji)需(xu)要穿(chuan)透顯(xian)示(shi)等,傳統面(mian)板不再適用(yong), AMOLED 面(mian)板的(de)(de)廣視角,高刷新頻率的(de)(de)特點恰好能夠(gou)(gou)滿足需(xu)求(qiu),目前主流(liu)VR 設(she)(she)(she)備(bei)均采用(yong)AMOLED 面(mian)板。

  蘋果(guo)計劃采(cai)用(yong)OLED: 目前OLED 面(mian)板產(chan)能(neng)主要集中(zhong)在(zai)日本和韓國(guo)企業。日本顯(xian)示JDI、樂金顯(xian)示LGD 和夏普SHARP 在(zai)全球LTPS 領域的市占率(lv)超(chao)過75%,而在(zai)AMOLED 領域韓國(guo)三星(xing)則一枝獨(du)大,市場份額超(chao)過95%。蘋果(guo)計劃在(zai)2017 年的iphone 開始采(cai)用(yong)OLED,并(bing)于業內唯一供應商(shang)三星(xing)簽訂了供貨(huo)協(xie)議,蘋果(guo)是(shi)引領消費電(dian)子的龍(long)頭公司,可以想(xiang)象必定(ding)不(bu)會(hui)容忍(ren)重要零部件(jian)長期(qi)受制(zhi)于競爭(zheng)對(dui)手三星(xing),未來蘋果(guo)很(hen)可能(neng)會(hui)培養(yang)其他OLED 供貨(huo)商(shang),國(guo)內OLED 發展商(shang)仍然有(you)很(hen)大市場機會(hui)

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