11.2: Fast Ferroelectric Liquid Crystal Modes for Field ‐Sequential‐ Color and 3D Displays

Abstract

The development of novel photoaligned fast ferroelectric LCD based on Deformed Helix Ferroelectric (DHF) and Electrically Suppressed Helix (ESH) mode is discussed. A high quality dark state of DHF FLCD has been obtained as well as V‐shape switching with a high frequency. A fast response time and a high contrast ratio in ESH mode was observed. The applications in Field Sequential Color (FSC) and 3D LCD are envisaged.

Photoalignment of Liquid Crystals: Applications to Fast Response Ferroelectric Liquid Crystals and Rewritable Photonic Devices

“…Recently we have obtained a very effective new VS-FLC mode, which we called ESH (Electrically Suppressed Helix) mode. 7,33,34 The switching times was 130 µs at the voltage of ±7 V with the contrast ratio of 800 : 1. 3.…”

Photoaligning and Photopatterning — A New Challenge in Liquid Crystal Photonics

“…The photoalignment technique enables us to produce highly uniform FLC cells over a sufficiently large surface area. Recently, we have obtained a very effective new volume-stabilized (VS) FLC mode, which we called ESH (electrically suppressed helix) mode [10,11]. The switching times were 130 μs at the voltage of ±7 V with the contrast ratio of 8000:1 [10,11].…”

New Ferroelectric Liquid Crystalline Materials with Properties Suitable for Surface Stabilized and Deformed Helix Effects

“…FLCs are characterized by fast electro-optical response, low driving voltage and memory effects, which make them suitable candidates for many advanced applications, such as displays, gratings or sensors [22][23][24][25]. Different electro-optical modes can be successfully used for these applications: (i) Surface Stabilized (SS) FLC [26,27]; (ii) Deformed Helix (DH) FLC [28][29][30]; (iii) Electrically Suppressed Helix (ESH) of FLC [29]; (iv) modulation of light in the diffraction FLC grating [31]; (v) orientational electro-optical Kerr effect [32,33] and others. This mini-review summarises results on recently prepared ferroelectric liquid crystalline materials and their multicomponent mixtures [34][35][36][37][38][39].…”