广视角技术介绍-.课件.ppt

1、Quanta Display Inc.2002/9/27, p1廣視角相關技術介紹廣視角相關技術介紹Quanta Display Inc.2002/9/27, p2LCD應用產品的現況與未來Cellular Phones1.42.5吋吋STN/TFT反射型反射型Navigator5.810吋吋高耐久性高耐久性TFT/LTPSOfficeFamilyMobileLCD TV1530吋吋TFT高解析度高解析度 HDTV廣視角、高亮度廣視角、高亮度高反應時間高反應時間高對比、色純度高高對比、色純度高PDA310吋吋反射型反射型 STN/TFT輕、低耗電量輕、低耗電量Notebook PC12.1“(

2、SVGA)、13.3”(XGA)、 14.1”(XGASXGA)、15”(XGASXGA+)STN/TFT/LTPS薄型、重量輕、低耗電量薄型、重量輕、低耗電量LCD Monitor15“(XGASXGA)、17.1”(SXGA) 18.1”(SXGAUXGA)、20”(UXGA)TFT/LTPS薄型、重量輕、低耗電量薄型、重量輕、低耗電量DSC1.82.5吋吋TFT/LTPS低耗電量低耗電量Portable Game1.54吋吋反射型反射型STN/TFT重量輕、低耗電量重量輕、低耗電量Mini NB10.4”(SVGAXGA) 11.3”(SVGAXGA)TFT/LTPS輕輕薄薄、低耗電量、

3、低耗電量LCD Monitor15”(XGASXGA) 18”(XGAUXGA)TFT大畫面大畫面高解析度高解析度eBook6”10”(XGA)輕薄、低耗電輕薄、低耗電STN/TFT/plasticInternetQuanta Display Inc.2002/9/27, p3LCD之技術趨勢-反應時間與對比50ms25ms15msTN模式1995 1998 2001 2003IPS模式50ms25ms10ms 影響反應時間的關鍵影響反應時間的關鍵 液晶液晶低低黏度化，以及高極性液晶材料的開發黏度化，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中間色調的反應時間與黑

4、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驅動主動矩陣時的等價液晶容量大小提升對比提升對比 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視角-60 -40 -20 0 20 40 60350300200100500Quanta Display Inc.2002/9/27, p4Viewing Angle Gray scale viewing angleUniform LC alignment gives difference intransmitted light int

5、ensity with viewing anglesQuanta Display Inc.2002/9/27, p5Wide Viewing Angle Technology Negative compensated film mode ( Fuji film ) In-Plane Switching (IPS) mode (Hitachi, Matsushita, Mitsubishi) Multi-Domain Vertical Alignment (MVA) mode (Fujitsu)OCB ( Optically Compensated Bend ) modeOCB ( Optica

6、lly Compensated Bend ) mode Quanta Display Inc.2002/9/27, p6LCD之技術趨勢-廣視角 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 Alignment） FFS（Fringe Field Switching

7、）配向分割無分割2分割4分割廣視角 / 高畫質TNTN+薄膜VA+薄膜TN+薄膜VA+薄膜VA+薄膜PVA+薄膜HA/TN+薄膜Super-IPSIPSFFS資料來源：Nikkei MicrodevicesQuanta Display Inc.2002/9/27, p7TN+Film(TN+視角擴大膜視角擴大膜) Quanta Display Inc.2002/9/27, p8PixelUV area with low pre-tileNon-UV area with high pre-tile20 %80 %*Viewing angle:160 *Response time:15 ms *C

8、ontrast ratio:350:1 Quanta Display Inc.2002/9/27, p9IPS (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 Quanta Display Inc.2002/9/27, p10ElectrodePolarizerLCPolarizerOFFON Quanta Display Inc.2002/9/27, p11 OnSuper IPSIPSNTSC： 50 60 upContrast ratio: 200 350 Viewing angle(35:1):110.150160.16

9、0 Response time: 40 30 msQuanta Display Inc.2002/9/27, p12Basic Concept of IPS and MVAMVA-LCDProtrusionIPS-LCDQuanta Display Inc.2002/9/27, p13MVA(Multi-Domain Vertical Alignment,畫素分割垂直配向畫素分割垂直配向) 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Quanta Display Inc.2002/9/27, p14Multi-Domain Vertical Alignment (

10、MVA; Fujitsu Ltd.)Quanta Display Inc.2002/9/27, p15Structure of MVA-LCDQuanta Display Inc.2002/9/27, p162-Domain MVA-LCDQuanta Display Inc.2002/9/27, p174-Domain Protrusion pattern of MVA-LCDQuanta Display Inc.2002/9/27, p18Display characteristics of MVA cellsQuanta Display Inc.2002/9/27, p19Undesir

11、able disclination in the pixelQuanta Display Inc.2002/9/27, p20New protrusion wings to remove disclination Quanta Display Inc.2002/9/27, p21Protrusion without and with wingQuanta Display Inc.2002/9/27, p22Combination of protrusions and slitQuanta Display Inc.2002/9/27, p23Transmittance V.S. Slit wid

12、thQuanta Display Inc.2002/9/27, p24Off state of MVA modeQuanta Display Inc.2002/9/27, p25Viewing Angle of MVA-LCDsQuanta Display Inc.2002/9/27, p26Quanta Display Inc.2002/9/27, p27Quanta Display Inc.2002/9/27, p28Wide Viewing Angle Technology ComparisonQuanta Display Inc.2002/9/27, p29Wide Viewing Angle Technology ComparisonKey TechnologyWV-TNIPSSuper IPSMVAASVView Angle Left- Right Up- Down 45- 225 degrees 135- 315 degreesGray Scale ReverseColor VariationContrastXResponse Time (ms)Panel TransmittanceXXManufacturability