PB31 Characteristics of Bistable Twist Nematic LCD with Δε<0 Nematic LC Material

Abstract

The BTN mode with the nematic LC with Δε<0 is known as one of the bistable LCD modes. The pretilt angle on the substrate is a low pretilt angle in this mode. In this paper, the BTN mode with the LC with Δε<0 was investigated. This type of the cell has a pretilt angle with almost normal to the substrate. And the director orientation is also vertical alignment without the applied voltage. When the voltage is applied, the director in the center of the cell is parallel to the substrate and the twisted structure appears. The fundamental electro-optical characteristics were measured.