Bistable bend-splay liquid crystal display

Abstract

A bistable liquid crystal display based on the bend and splay configurations has been demonstrated. This display can be switched between the bend and splay deformation in a three-electrode configuration and has infinite bistable lifetime. It also has wide viewing angles, excellent contrast ratios, and very fast selection. Selection electric pulse duration of 50μs can be used to switch this display, implying the possibility of a high information content applications.

Electrically induced and thermally erased properties of side‐chain liquid crystalline polymer/liquid crystal/chiral dopant composites

“…Recently, resulting from the stabilities of the planar and the focal conic textures at zero field, some kinds of N*-LC devices with two stable states have been investigated [6][7][8][9][10]. This kind of device has attracted much attention because power consumption can be reduced by two stable states, especially when the device does not require a frequent update [11].…”

P‐120: Nucleation‐control Bistable Twist Nematic Display

“…Different BTN-LCD structures were reported which including three terminals finger electrodes [6], comb-onplane (COP) electrodes [7] and simply two electrodes with dual-frequency LC [8] or controlled by backflow relaxation [9]. In this paper, a nucleation-control switching BTN-LCD is proposed.…”

Controlling the Alignment of Polyimide for Liquid Crystal Devices

“…Using a high pretilt angle of ~50 o is sufficient to provide a stable bend state in an OCB mode at no bias voltage (Yeung & Kwok, 2006a), and it has been successfully demonstrated to reach the no-bias OCB operation. In general, an alignment layer with a high pretilt angle of around 45 o ~ 58 o is required for a BBS LCD providing the same splay and bend deformation energies (Yu & Kwok, 2004); therefore bistability between bend and splay states are reached.…”