Film Compensation of the Optically Compensated Splay Liquid Crystal Device

ABSTRACT

Optically compensated splay (OCS) mode, where the LCs are almost homeotropically aligned with a rubbed parallel at both surfaces, and where a mid-director orients itself parallel to the substrate, is known to show a wide-viewing-angle, due to self-compensation effect. Since a cell retardation value exists in the presence of an electric field, film compensation is necessary to realize a wide-viewing-angle and high contrast ratio. In this paper, we show various electro-optic characteristics, depending on cell configurations with optical compensation films.

Keywords:

• fast response time
• splay
• vertical alignment
• wide viewing angle

Acknowledgments

This work was supported by grant No. R01-2004-000-10014-0 from the Basic Research program of the Korea Science & Engineering Foundation.