49.2: Image Sticking Reduction of Fringe Field Switching LCDs

Abstract

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P‐207: Late‐News Poster: Optimized Pixel Design to Improve Image Sticking in Full‐Screen LCDs with Ultra Narrow Border

“…In order to achieve excellent panel quality and IS performance simultaneously, an optimized alignment film [3][4] as well as other improvement based on the research of Flicker, liquid crystal material, DC bias [5] , optical alignment [6] and twist angle [7] have been presented. This paper uses the design of Super Fine TFT-Pro(SFT-Pro) to reduce R DC, in order to improve IS, for reducing the ion concentration requires a long verification process.…”

“…As a result, the size of down border has been continuously compressed from 2.0 to 1.4, or even smaller, just as shown in Fig.1. The Ultra Narrow Border makes ion concentration increasing .At the same time, the continuously pursuing of higher brightness on mobile phone screens leads to the addition number of LEDs in BLU, the higher temperature of the BLU caused by addition LEDs and narrower border, increasing the rate of ion diffusion , and then IS is deteriorated [1][2][3] .The screen with Ultra Narrow Border undoubtedly poses a great challenge to exceeding the capacity of panel display performance, especially in the IS.…”

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

“…Ions are inherently present in molecular liquid crystals and are the origin of their finite electrical conductivity [2,[8][9][10][11][12][13][14][15][16][17][18][19].…”

“…In the considered example, the screening electric field compensates for the applied electric field in less than 2 s, resulting in the substantial alteration of the liquid crystal performance. An extensive discussion of the ion-related phenomena in liquid crystals are beyond the scope of this paper, and readers are referred to the original publications [9][10][11][12][13][14][15][16][17][18][19][20][21][22] and references therein] for more details. …”

“…However, ions are always present in liquid crystals [2,8]. Their negative impact on the overall performance of liquid crystal devices was reported in many publications [9][10][11][12][13][14][15][16][17][18]. For example, ions in liquid crystals can cause slow response, image sticking, image flickering, the reduction of the voltage holding ratio, and color staining and non-uniformity of the image, to name a few.…”