Title

Effect of Chiral Dopant Concentration on the Time Response of a Twisted Nematic Cell

Publication Title

Molecular Crystals and Liquid Crystals

Publication Date

1987

Document Type

Article

DOI

10.1080/15421408708084209

Keywords

twisted nematic cell, TN cell, temperature dependence, chiral dopant, 3π/2 cell

Disciplines

Physics

Abstract

The dependence of the turn-off time, Toff, of a twisted nematic cell on the cell thickness and the chiral dopant concentration has been measured. Toff dropped and the optical bounce disappeared when the cell thickness exceeded p/2, where p is the induced pitch length. Under these conditions a 3π/2 cell was obtained. It appears possible, on the basis of our results, to reduce the temperature dependence of Toff by adding the correct amount of chiral dopant.

Share

COinS