Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Opt Express. 2008 Mar 17;16(6):3859-64.

Switching of polymer-stabilized vertical alignment liquid crystal cell.

Author information

  • 1Graduate Institute of Photonics and Department of Physics, National Changhua University of Education, Changhua, Taiwan, 500, Republic of China. chiyen@cc.ncue.edu.tw

Abstract

This work investigates the switching characteristics of the polymer-stabilized vertical alignment (VA) liquid crystal (LC) cell. The experimental results reveal that the fall time of the cell declines as the monomer concentration increases because the vertically-aligned polymer networks accelerate the relaxation of the LC molecules. Furthermore, the formed polymer networks impede the growth and annihilation of LC defects, suppressing the optical bounce in the time dependent transmittance curve of the cell when the voltage is applied to the cell, substantially reducing the rise time of the cell. A step-voltage driving scheme is demonstrated to eliminate completely the optical bounce and hence improve further the rise time of the VA LC cell. The rise times of the pristine and the polymer-stabilized VA LC cells under the step-voltage driving scheme are less than 50% of those under the conventional driving scheme.

PMID:
18542482
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk