工廠地址:深圳(zhen)市寶安(an)區福(fu)永街(jie)道鳳凰興業一路華倫科(ke)技園(yuan)21棟(dong)2樓
楊 總:13828709518
雷 總(zong):13923457816
郵箱:yangdekai@pianyun.com.cn
QQ:417594796
2018-06-11 16:47:59
一(yi)個液(ye)晶(jing)(jing)顯示器的(de)好(hao)壞決定性(xing)要看(kan)它的(de)面(mian)板(ban),因為面(mian)板(ban)的(de)好(hao)壞直接影響到(dao)畫面(mian)的(de)觀看(kan)效果(guo),并且液(ye)晶(jing)(jing)電視(shi)面(mian)板(ban)占到(dao)了(le)整(zheng)機成(cheng)本的(de)一(yi)半(ban)以(yi)上,是(shi)影響液(ye)晶(jing)(jing)電視(shi)的(de)造價的(de)主要因素,所以(yi)要選一(yi)款好(hao)的(de)液(ye)晶(jing)(jing)顯示器,首先要選好(hao)它的(de)面(mian)板(ban)。液(ye)晶(jing)(jing)面(mian)板(ban)可(ke)以(yi)在很大程度(du)(du)上決定液(ye)晶(jing)(jing)顯示器的(de)亮度(du)(du)、對比度(du)(du)、色彩、可(ke)視(shi)角(jiao)度(du)(du)等非常(chang)重要的(de)參數。
就目前液晶面板(ban)市場(chang)來看,占據主(zhu)流(liu)地(di)位的主(zhu)要有以下(xia)三(san)種:TN、VA和(he)IPS。它們(men)各自(zi)所采用(yong)的液晶材料和(he)面板(ban)結構都不(bu)盡相同,也(ye)是各有優缺點。
TN型液(ye)(ye)(ye)晶(jing)面(mian)板:Twisted Nematic(扭曲向列型)面(mian)板這種類型的(de)(de)液(ye)(ye)(ye)晶(jing)面(mian)板,最大(da)(da)的(de)(de)特點就是(shi)(shi)價(jia)(jia)格低廉,被普(pu)遍應(ying)用于中(zhong)低端液(ye)(ye)(ye)晶(jing)顯示(shi)器(qi)上。大(da)(da)家現(xian)在能(neng)夠購(gou)買到(dao)的(de)(de)19英寸寬(kuan)屏液(ye)(ye)(ye)晶(jing)顯示(shi)器(qi),就全部是(shi)(shi)采用TN面(mian)板的(de)(de)。另外(wai)(wai),TN面(mian)板不僅售價(jia)(jia)便宜(yi),而且(qie)響應(ying)時間更快,這也(ye)(ye)(ye)是(shi)(shi)TN面(mian)板受廠商青(qing)睞(lai)的(de)(de)原因之一。不過,這種面(mian)板雖(sui)然(ran)價(jia)(jia)格便宜(yi),響應(ying)時間也(ye)(ye)(ye)夠快,但也(ye)(ye)(ye)存在著(zhu)顯示(shi)色彩不足(zu)、可視角度(du)低等(deng)缺陷。首先,TN面(mian)板天然(ran)只能(neng)表現(xian)16.2M色,雖(sui)然(ran)目(mu)前市面(mian)上有改進(jin)的(de)(de)TN面(mian)板或是(shi)(shi)加裝8bit驅動,也(ye)(ye)(ye)能(neng)夠顯示(shi)16.7M色,但在效果(guo)方面(mian)還是(shi)(shi)無法和物理可顯示(shi)16.7M色的(de)(de)面(mian)板相比;另外(wai)(wai),早期(qi)技術的(de)(de)TN面(mian)板可視角度(du)最大(da)(da)其實只有90度(du),后(hou)來,通過在面(mian)板上增加了一層補償膜(film),將(jiang)可視角度(du)提高到(dao)了160度(du)左右(you)。TN+film面(mian)板也(ye)(ye)(ye)是(shi)(shi)時下液(ye)(ye)(ye)晶(jing)顯示(shi)器(qi)市場的(de)(de)絕(jue)對主流。
VA型液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban):是(shi)(shi)(shi)高(gao)(gao)端液(ye)(ye)晶應(ying)用(yong)(yong)較多(duo)的(de)(de)(de)面(mian)(mian)(mian)板(ban)(ban)(ban)類型,屬于廣(guang)(guang)視(shi)(shi)角面(mian)(mian)(mian)板(ban)(ban)(ban),VA型液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban)應(ying)用(yong)(yong)得相當廣(guang)(guang)泛。物8bit的(de)(de)(de)面(mian)(mian)(mian)板(ban)(ban)(ban)可(ke)(ke)以(yi)(yi)(yi)提(ti)供16.7M色彩和(he)大(da)可(ke)(ke)視(shi)(shi)角度(du)(du)是(shi)(shi)(shi)該類面(mian)(mian)(mian)板(ban)(ban)(ban)定位高(gao)(gao)端的(de)(de)(de)資本(ben),大(da)可(ke)(ke)視(shi)(shi)角度(du)(du)和(he)對(dui)比度(du)(du)高(gao)(gao)(TN面(mian)(mian)(mian)板(ban)(ban)(ban)對(dui)比度(du)(du)如(ru)果不(bu)使(shi)用(yong)(yong)軟件技(ji)術(shu)一(yi)般只有在1000∶1以(yi)(yi)(yi)下(xia))是(shi)(shi)(shi)它(ta)的(de)(de)(de)特(te)點。不(bu)過,目(mu)前(qian)市(shi)(shi)面(mian)(mian)(mian)上的(de)(de)(de)VA型液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban),又有MVA和(he)PVA之分。MVA(Multi-domain Vertical Alignment)是(shi)(shi)(shi)最早出現的(de)(de)(de)廣(guang)(guang)視(shi)(shi)角液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban)技(ji)術(shu),主(zhu)要(yao)由(you)富士通主(zhu)導。改良后的(de)(de)(de)P-MVA類面(mian)(mian)(mian)板(ban)(ban)(ban)可(ke)(ke)視(shi)(shi)角度(du)(du)可(ke)(ke)達(da)接近水平的(de)(de)(de)178°,并且灰階響應(ying)時間可(ke)(ke)以(yi)(yi)(yi)達(da)到8ms以(yi)(yi)(yi)下(xia)。因為奇美、友(you)達(da)光電等廠商在生產中(zhong)高(gao)(gao)端液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban)時,都(dou)采(cai)用(yong)(yong)了(le)MVA技(ji)術(shu),因為目(mu)前(qian)市(shi)(shi)面(mian)(mian)(mian)上采(cai)用(yong)(yong)MVA面(mian)(mian)(mian)板(ban)(ban)(ban)的(de)(de)(de)中(zhong)高(gao)(gao)端液(ye)(ye)晶顯示較多(duo),如(ru)許多(duo)品牌(pai)的(de)(de)(de)20英(ying)寸、22英(ying)寸寬屏,就多(duo)采(cai)用(yong)(yong)了(le)MVA液(ye)(ye)晶面(mian)(mian)(mian)板(ban)(ban)(ban)。但是(shi)(shi)(shi)價格也相對(dui)TN面(mian)(mian)(mian)板(ban)(ban)(ban)要(yao)昂貴一(yi)些(xie)。
IPS(In-Plane Switching,平面(mian)(mian)轉換)面(mian)(mian)板最大的特點(dian)就是它的兩(liang)極都(dou)在(zai)(zai)同一(yi)個面(mian)(mian)上(shang),而不(bu)象其(qi)它液(ye)晶(jing)模式的電極是在(zai)(zai)上(shang)下(xia)兩(liang)面(mian)(mian),立(li)體排列。由于(yu)電極在(zai)(zai)同一(yi)平面(mian)(mian)上(shang),不(bu)管在(zai)(zai)何種(zhong)狀態下(xia)液(ye)晶(jing)分(fen)子始(shi)終(zhong)都(dou)與屏幕平行,會(hui)使(shi)開(kai)口率降(jiang)低,減少透光率,所以IPS應用(yong)在(zai)(zai)LCD TV上(shang)會(hui)需要更多的背光燈(deng)。此外還(huan)有一(yi)種(zhong)S-IPS面(mian)(mian)板屬于(yu)IPS的改(gai)良型
IPS面(mian)(mian)板(ban)的優勢(shi)是(shi)可(ke)視角度高、響應(ying)速度快,色彩還(huan)原準確(que),價格便宜。不(bu)(bu)過缺點是(shi)漏光問(wen)題比(bi)較嚴重,黑色純度不(bu)(bu)夠,要比(bi)PVA稍差,因(yin)此需(xu)要依(yi)靠光學膜的補償來實現更好的黑色。IPS面(mian)(mian)板(ban)主要由LG-飛利浦(pu)生產。和其他類型的面(mian)(mian)板(ban)相比(bi),IPS面(mian)(mian)板(ban)的屏(ping)幕較為(wei)“硬(ying)(ying)(ying)”,用手輕輕劃一下不(bu)(bu)容易出(chu)現水(shui)紋樣變(bian)形,因(yin)此又有(you)硬(ying)(ying)(ying)屏(ping)之稱(cheng)。仔細看(kan)(kan)屏(ping)幕時,如果(guo)看(kan)(kan)到是(shi)方向朝左的魚(yu)鱗狀象素,加上硬(ying)(ying)(ying)屏(ping)的話,那么(me)就(jiu)可(ke)以確(que)定(ding)是(shi)IPS面(mian)(mian)板(ban)了(le)。
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工廠地址:深圳(zhen)市寶安(an)區福(fu)永街(jie)道鳳凰興業一路華倫科(ke)技園(yuan)21棟(dong)2樓
楊 總:13828709518
雷 總(zong):13923457816
郵箱:yangdekai@pianyun.com.cn
QQ:417594796