A Photo Alignment Technology using a Vertical Alignment Film

Abstract

We have studied the dependence of the pretilt angle on the preparing conditions of a vertical alignment film and on NLC materials in a photo alignment, method. From this study, we showed that the high temperature baking of the alignment film and using a NLC material with large An are needed to create a low pretilt angle. And we succeeded in controlling the pretilt angle as low as 70 degrees without any alignment defects.