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IPS panel

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state), the inner surfaces of the glass plates are treated to align the bordering LC molecules at a right angle. This molecular structure is practically the same as in TN LCDs. However, the arrangement of the electrodes e1 and e2 is different. Electrodes are in the same plane and on a single glass
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technology). Performance and specs remained very similar to LG Display's IPS and Samsung's PLS offerings. The first 144 Hz compatible IPS-type panels were produced in late 2014 (used first in early 2015) by AUO, beating Samsung and LG Display to providing high refresh rate IPS-type panels.
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introduced Super PLS (Plane-to-Line Switching) with the intent of providing an alternative to the popular IPS technology which is primarily manufactured by LG Display. It is an "IPS-type" panel technology, and is very similar in performance features, specs and characteristics to LG Display's
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in the late 1980s and early 1990s. Early panels showed grayscale inversion from up to down, and had a high response time (for this kind of transition, 1 ms is visually better than 5 ms). In the mid-1990s new technologies were developed—typically IPS and
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and Hitachi became early manufacturers of active-matrix addressed LCDs based on the IPS technology. This is a milestone for implementing large-screen LCDs having acceptable visual performance for flat-panel computer monitors and television screens. In 1996,
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of Japan filed patents to improve this technology. A leader in this field was Katsumi Kondo, who worked at the Hitachi Research Center. In 1992, engineers at Hitachi worked out various practical details of the IPS technology to interconnect the
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state (shown on the left), entering light L1 becomes linearly polarized by polarizer P. The twisted nematic LC layer rotates the polarization axis of the passing light by 90 degrees, so that ideally no light passes through polarizer A. In the
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state, a sufficient voltage is applied between electrodes and a corresponding electric field E is generated that realigns the LC molecules as shown on the right of the diagram. Here, light L2 can pass through polarizer A.
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Improves contrast ratio by twisting electrode plane layout. Also introduces an optional Advanced True White polarizing film from NEC, to make white look more natural. This is used in professional/photography LCDs.
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However, suffers from the phenomenon called gray scale inversion. This means that the display has one viewing side in which the image colors suddenly change after exceeding the specified viewing angle. (see image
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IPS panels display consistent, accurate color from all viewing angles. A comparison in 2014 of IPS vs. TN panels concerning color consistency under different viewing angles can be seen on the website of
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P and A have their axes of transmission in the same direction. To obtain the 90 degree twisted nematic structure of the LC layer between the two glass plates without an applied electric field (
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array as a matrix and to avoid undesirable stray fields in between pixels. Hitachi also improved the viewing angle dependence further by optimizing the shape of the electrodes (
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Wider aperture for light transmission, enabling the use of lower-power, cheaper backlights. Improves diagonal viewing angle and further reduce response time to 5 ms.
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developed the optical patterning technique that enables multi-domain LCD. Multi-domain and in-plane switching subsequently remain the dominant LCD designs through 2006.
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In 2012 AU Optronics began investment in their own IPS-type technology, dubbed AHVA. This should not be confused with their long standing AMVA technology (which is a
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Offer 1.07 billion colours (30-bit colour depth). More possible orientations per sub-pixel (1024 as opposed to 256) and produces a better true colour depth.
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In practice, other schemes of implementation exist with a different structure of the LC molecules – for example without any twist in the
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The latest panel from IPS Alpha Technology with a wider colour gamut and contrast ratio matching PVA and ASV displays without off-angle glowing.
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state. As both electrodes are on the same substrate, they take more space than TN matrix electrodes. This also reduces contrast and brightness.
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essentially parallel to the glass substrates. However, the inventor was not yet able to implement such IPS-LCDs superior to TN displays.
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plate, so they generate an electric field essentially parallel to this plate. The diagram is not to scale: the LC layer is only a few
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IPS panels offer clear and razor-sharp images without reflections, a wide viewing range, stable response time and better coloring.
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in 2002, improves substantially on the contrast ratio of traditional S-IPS panels to the point where they are second only to some
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Unlike TN LCDs, IPS panels do not lighten or show tailing when touched. This is important for touch-screen devices, such as
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Improved colour accuracy, increased resolution and PPI, and greater light transmission for lower power consumption.
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in 1998), which has all the benefits of IPS technology with the addition of improved pixel refresh timing.
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Samsung asserted the following benefits of Super PLS (commonly referred to as just "PLS") over IPS:
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by Guenter Baur et al. and patented in various countries including the US on 9 January 1990. The
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and align themselves with their long axis parallel to an applied electrical field. In the
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and other South Korean, Japanese, and Taiwanese LCD manufacturers adopted IPS technology.
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After thorough analysis, details of advantageous molecular arrangements were filed in
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Super-IPS was later introduced with better response times and colour reproduction.
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panels, because in the past AMOLED panels had difficulties in realizing full
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IPS panels are sometimes vulnerable to a defect called backlight bleeding.
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Liquid crystal electric field sensing measurement and display device
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thick, very thin compared with the distance between the electrodes.
209:. Statements consisting only of original research should be removed. 305:(VA)—that could resolve these weaknesses and were applied to large 1842: 912: 526: 271: 1680:"144Hz IPS-type Panels Developed – 1440p as Well" 1860: 1726: 1636:"Samsung PLS improves on IPS displays like iPad's, costs less" 391: 360: 174: 72: 31: 1662:"AU Optronics develops 144Hz refresh IPS-type display panels" 758:
Inc. Also, compare to TN panels, IPS panels can display more
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Visual comparison of IPS and TN done by Japan Display Inc.
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One approach patented in 1974 was to use inter-digitated
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The True depth method was the only viable technology for
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IPS panels are more expensive to produce than TN panels.
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IPS panels require up to 15% more power than TN panels.
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Thick-film dielectric electroluminescent technology
1927: 1822: 1769: 1760: 1009:. Riverdi (TFT Module Manufacturer). Archived from 901:(mentioned as largest supplier of IPS LCDs in 2012) 103:. Unsourced material may be challenged and removed. 27:Screen technology used for liquid crystal displays 2302:Comparison of CRT, LCD, plasma, and OLED displays 1181:"Espacenet – Bibliographic data" 1107:"Bibliographic data: US5576867 (A) ― 1996-11-19" 1064:"Bibliographic data: US3834794 (A) ― 1974-09-10" 818:offering. Samsung adopted PLS panels instead of 1214:, filed 18 September 1992 and 20 January 1993. 285:(TN) matrix LCDs prevalent in the late 1980s. 1738: 1007:"TFT Technology: Enhancing the viewing angle" 970: 968: 843:Up to 15 percent decrease in production costs 8: 1606:"Samsung Adopts IPS instead of AMOLED: Why?" 1586:. The University of Pennsylvania. 3 May 2017 735:This pixel layout is found in S-IPS LCDs. A 704:The LC molecules have a positive dielectric 679:Schematic diagram IPS liquid crystal display 378:IPS technology is widely used in panels for 1956:Surface-conduction electron-emitter display 1379:: CS1 maint: numeric names: authors list ( 66:Learn how and when to remove these messages 1867:Active-Matrix Organic light-emitting diode 1766: 1745: 1731: 1723: 909:Panasonic Liquid Crystal Display Co., Ltd 243:Learn how and when to remove this message 225:Learn how and when to remove this message 163:Learn how and when to remove this message 1392: 1390: 730: 674: 591: 423: 964: 1372: 1334:: CS1 maint: archived copy as title ( 1327: 1044: 1043: 1032: 408:products were marketed with the label 1616:from the original on 21 December 2012 1361:from the original on 11 December 2015 400:from 2004 to 2008 with IPS LCDs with 7: 2003:Ferroelectric liquid crystal display 1642:from the original on 27 October 2012 1427:. PChardwarehelp.com. Archived from 837:Further improvement in viewing angle 101:adding citations to reliable sources 2077:Light-emitting electrochemical cell 854:Advanced Hyper-Viewing Angle (AHVA) 425:Hitachi IPS technology development 2276:Large-screen television technology 1552:Ivankov, Alex (1 September 2016). 1249:Technical specifications iPhone 5c 25: 1950:Organic light-emitting transistor 1686:from the original on 18 May 2015. 1668:from the original on 17 May 2015. 1405:from the original on 29 June 2017 1285:IPS-Pro (Evolving IPS technology) 987:from the original on 2 April 2015 840:10 percent increase in brightness 493:IPS has since been superseded by 47:This article has multiple issues. 2313:Comparison of display technology 1425:"LCD Panel Technology Explained" 1349:tech2 News Staff (19 May 2011). 179: 77: 36: 1944:Electroluminescent Quantum Dots 88:needs additional citations for 55:or discuss these issues on the 2015:Laser-powered phosphor display 1529:Mark, Winston (30 June 2021). 1450:Comparisons done by LG Display 1397:Baker, Simon (30 April 2011). 975:Cross, Jason (18 March 2012). 792:IPS panels have slower/longer 593:LG IPS technology development 469:Most panels also support true 1: 2281:Optimum HDTV viewing distance 2271:History of display technology 2159:Computer-generated holography 1212:Liquid crystal display device 809:Plane to Line Switching (PLS) 655:Advanced High Performance IPS 262:) is a screen technology for 1861:Organic light-emitting diode 1855:Light-emitting diode display 1584:"Display and Graphics Guide" 1151:"2014 SID Honors and Awards" 977:"Digital Displays Explained" 283:twisted nematic field effect 739:shape is used to widen the 568:Next generation of IPS-Pro 266:(LCDs). In IPS, a layer of 205:the claims made and adding 2368: 2071:Vacuum fluorescent display 1795:Electroluminescent display 688:In this case, both linear 521:AS-IPS, also developed by 394:products were marketed as 270:is sandwiched between two 2310: 1918:Liquid crystal on silicon 1267:Comparison of iPad models 917:Sony Professional Display 2109:Fourteen-segment display 1912:Digital Light Processing 1711:Full Form of IPS Display 1230:. Nature. 22 August 1996 804:Alternative technologies 471:8-bit-per-channel colour 2352:South Korean inventions 2337:Liquid crystal displays 2115:Sixteen-segment display 1801:Rear-projection display 1455:13 January 2013 at the 1272:24 October 2012 at the 1254:31 October 2013 at the 1185:Worldwide.espacenet.com 983:. PC World. p. 4. 888:Chi Mei Optoelectronics 846:Increased image quality 813:Toward the end of 2010 264:liquid-crystal displays 1962:Field-emission display 1877:Liquid-crystal display 1155:InformationDisplay.org 943:Liquid-crystal display 744: 680: 390:. In particular, most 343:, Darmstadt, Germany. 2099:Eight-segment display 2093:Seven-segment display 1716:4 August 2019 at the 1473:28 March 2014 at the 1290:29 March 2010 at the 1207:U.S. patent 5,598,285 1096:, filed 28 June 1973. 1089:U.S. patent 3,834,794 734: 678: 2221:Display capabilities 2104:Nine-segment display 1806:Plasma display panel 1682:. 8 September 2014. 1664:. 8 September 2014. 1638:. electronista.com. 1564:on 26 September 2017 1401:. Tftcentral.co.uk. 1225:"Optical Patterning" 353:thin-film transistor 346:Shortly thereafter, 97:improve this article 2347:Japanese inventions 2250:See-through display 2154:Holographic display 1832:Quantum dot display 1612:. 9 November 2012. 1316:on 15 November 2012 815:Samsung Electronics 594: 582:High contrast ratio 563:High contrast ratio 543:High contrast ratio 426: 320:only to produce an 2332:Display technology 2292:Color Light Output 2286:High Dynamic Range 2088:Dot-matrix display 2083:Lightguide display 1754:Display technology 1701:Panel Technologies 1533:. EsportSource.net 1531:"IPS or TN panel?" 1491:2 May 2015 at the 1486:IPS "Stable Panel" 1431:on 14 January 2012 745: 690:polarizing filters 681: 592: 573:IPS Alpha Next-Gen 515:High transmittance 506:Advanced Super-IPS 461:Wide viewing angle 424: 333:Fraunhofer Society 303:vertical alignment 260:in-plane switching 190:possibly contains 18:In Plane Switching 2342:German inventions 2319: 2318: 2245:Always-on display 2036:Electromechanical 2024: 2023: 1187:. 28 January 1997 1042:External link in 668: 667: 590: 589: 487:Colour shift free 402:CCFL backlighting 253: 252: 245: 235: 234: 227: 192:original research 173: 172: 165: 147: 70: 16:(Redirected from 2359: 2297:Flexible display 2259:Related articles 2139:Autostereoscopic 1838:Electronic paper 1784:Cathode-ray tube 1767: 1747: 1740: 1733: 1724: 1706:IPS vs. VA Panel 1688: 1687: 1676: 1670: 1669: 1658: 1652: 1651: 1649: 1647: 1632: 1626: 1625: 1623: 1621: 1602: 1596: 1595: 1593: 1591: 1580: 1574: 1573: 1571: 1569: 1560:. 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In Plane Switching
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liquid-crystal displays
liquid crystals
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surfaces
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active matrix
TFT LCDs
vertical alignment
computer monitor

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