Skip to main content
Article
Approximate Description of the Three Dimensional Director and Electric Field in a Liquid Crystal Display at a High Voltage
Journal of Applied Physics
  • G. Panasyuk
  • David W Allender, Kent State University - Kent Campus
Publication Date
1-15-2000
Document Type
Article
DOI
10.1063/1.371921
Disciplines
Abstract

An approximate analytical approach for describing properties of a liquid crystal display associated with a homeotropic to multidomainlike transition for a liquid crystal with a positive dielectricanisotropy was developed. The electrode and surface coating of the display are prepared in such a way that in the absence of an electric field (dark state) the liquid crystal alignment is homeotropic. The bright state corresponds to a situation when a high voltage is applied to the interdigitated electrodes located on both substrates, which causes a director deformation of a multidomain type. Approximate solutions for the three dimensional electric field and director configuration in the case of strong homeotropic anchoring were obtained to describe the bright state. It was found that two different defect structures are possible for the director configuration: one corresponds to a wall defect and the other to two disclination lines. A first order phase transition between the two structures is predicted at a particular value of the voltage. An estimate of this critical voltage is obtained.

Comments

Copyright 2000 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 87, 649 (2000) and may be found at http://dx.doi.org/10.1063/1.371921.

Citation Information
G. Panasyuk and David W Allender. "Approximate Description of the Three Dimensional Director and Electric Field in a Liquid Crystal Display at a High Voltage" Journal of Applied Physics Vol. 87 Iss. 2 (2000) p. 649 - 657
Available at: http://works.bepress.com/david_allender/26/