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A Study on the director distribution of In-Plane Switching liquid crystal cell by finite element method  

Jeong, Ju-Sik (Dept.of Electronics Electric Engineering, Inha University)
Yun, Sang-Ho (Dept.of Electronics Electric Engineering, Inha University)
Lee, Cheol-Su (Dept.of Electronics Electric Engineering, Inha University)
Won, Tae-Yeong (Dept.of Electronics Electric Engineering, Inha University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.39, no.4, 2002 , pp. 10-18 More about this Journal
Abstract
This paper reports a methodology for calculating distribution of the director in an In-plane switching liquid crystal cell by a numerical technique. To calculate distribution of the director, we developed a three dimensional finite element method (FEM) and calculated the distribution of electric potential and electric field in the liquid crystal cell. We have considered the free-energy density composed of electric potential and strain energy in the bulk of liquid crystal cell and calculated the switching property of liquid crystal cell by the Ericksen-Leslie equation and the Laplace equation We generated 1,859 nodes and 8,640 elements for IPS mode cell with 24${\mu}{\textrm}{m}$$\times$12${\mu}{\textrm}{m}$$\times$4.5${\mu}{\textrm}{m}$ and performed transient analysis until 16ms. As a result, horizontal electric field occurred at cell region except liquid crystal region above electrodes and the disclination occured on electrodes.
Keywords
finite element method; liquid crystal; In-plane switching; Ericksen-Leslie equation;
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