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Crucial influence of polar alignment on the dynamics of in-plane switching cells |
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| Authors: | Yu-Bao Sun Zhi-Dong Zhang |
| Institution: | 1. Laboratoire de Physique de la Matière Condensée, Université Hassan II, F.S.T., Mohammadia B.P. 146, Mohammadia, Maroc;2. Laboratoire d'Etude des Matériaux et des Composants pour l'Electronique, E.A. 2601, Université du Littoral-C?te d'Opale B.P. 717, Calais, France;3. Laboratoire de Dynamique et Structures des Matériaux Moléculaires, U.R.A. n° 801, Université de Lille 1, 59655 Villeneuve d'Ascq, France;4. Centre de Recherche Paul Pascal, Université de Bordeaux 1, 33600 Pessac, France |
| Abstract: | We investigated theoretically the dynamics of in-plane switching (IPS) cells with small pretilt angle and found that the liquid crystal director variation causes optical bounce after switching on an applied voltage. We analysed the behaviour of the director by computer simulation and found that the optical bounce occurs during the rising period with the normal twist and tilt angles of the directors in the IPS cell in the absence of the field-induced backflow effect. Pretilt angle is the source of this optical bounce. |
| Keywords: | liquid crystals reentrant phenomena phase transitions Landau–de Gennes theory |