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1、廣視角相關技術介紹,LCD應用產品的現況與未來,Cellular Phones1.42.5吋STN/TFT反射型,Navigator5.810吋高耐久性TFT/LTPS,Office,Family,Mobile,LCD TV1530吋TFT高解析度 HDTV廣視角、高亮度高反應時間高對比、色純度高,PDA310吋反射型 STN/TFT輕、低耗電量,Notebook PC12.1“(SVGA)、13.3”(XGA)、14.1”(XGASXGA)、15”(XGASXGA+)STN/TFT/LTPS薄型、重量輕、低耗電量,LCD Monitor15“(XGASXGA)、17.1”(SXGA)18.1
2、”(SXGAUXGA)、20”(UXGA)TFT/LTPS薄型、重量輕、低耗電量,DSC1.82.5吋TFT/LTPS低耗電量,Portable Game1.54吋反射型STN/TFT重量輕、低耗電量,Mini NB10.4”(SVGAXGA)11.3”(SVGAXGA)TFT/LTPS輕薄、低耗電量,LCD Monitor15”(XGASXGA)18”(XGAUXGA)TFT大畫面高解析度,eBook6”10”(XGA)輕薄、低耗電STN/TFT/plastic,Internet,LCD之技術趨勢-反應時間與對比,50ms,25ms,15ms,TN模式,1995 1998 2001 2003
3、,IPS模式,50ms,25ms,10ms,影響反應時間的關鍵液晶低黏度化,以及高極性液晶材料的開發中間色調的反應時間與黑白顯示之間的反應速度差距驅動主動矩陣時的等價液晶容量大小,提升對比以前是200:1(IPS),現在已經提高至350:1(Super-IPS)以前MVA是300:1,現在已經提高至400:1,是因為降低漏光而使其提高,Viewing Angle,Wide Viewing Angle Technology,Negative compensated film mode(Fuji film)In-Plane Switching(IPS)mode(Hitachi,Matsushita
4、,Mitsubishi)Multi-Domain Vertical Alignment(MVA)mode(Fujitsu)OCB(Optically Compensated Bend)mode,LCD之技術趨勢-廣視角,技術來源Hitachi:IPS(1995)Super-IPS(1999)Fujitsu:MVA(1995)Hyundai:FFS(1998)Samsung:PVA(1998)LG-Philips:UVA(1998)NEC:SFT(IPS)Sharp:ASV(TN+薄膜),註:IPS(In-Plane Switching);MVA(Multi-domain Vertical Al
5、ignment)FFS(Fringe Field Switching),資料來源:Nikkei Microdevices,TN+Film(TN+視角擴大膜),ASV(Advanced Super-V:Sharp),*Viewing angle:160*Response time:15 ms*Contrast ratio:350:1,IPS(In-Plane Switching or Super-TFT),當施加電壓,液晶分子的配向方向平行於玻璃基版,IPS(in-plane switching),Electrode,Polarizer,LC,Polarizer,OFF,ON,Super IPS
6、(Hitachi),NTSC:50 60 upContrast ratio:200 350 Viewing angle(35:1):110.150160.160 Response time:40 30 ms,Basic Concept of IPS and MVA,MVA(Multi-Domain Vertical Alignment,畫素分割垂直配向),液晶分子在靜態時並不是真的垂直配向。當施加電壓時,液晶分子變成接近水平配向,Multi-Domain Vertical Alignment(MVA;Fujitsu Ltd.),Structure of MVA-LCD,2-Domain MVA
7、-LCD,4-Domain Protrusion pattern of MVA-LCD,Display characteristics of MVA cells,Undesirable disclination in the pixel,New protrusion wings to remove disclination,Protrusion without and with wing,Combination of protrusions and slit,Transmittance V.S.Slit width,Off state of MVA mode,Viewing Angle of MVA-LCDs,Wide Viewing Angle Technology Comparison,Wide Viewing Angle Technology Comparison,