Alignment Technology and Applications of Liquid Crystal Devices: 1st Edition (Hardback) book cover

Alignment Technology and Applications of Liquid Crystal Devices

1st Edition

By Kohki Takatoh, Masanori Sakamoto, Ray Hasegawa, Mitsushiro Koden, Nobuyuki Itoh, Masaki Hasegawa

CRC Press

320 pages

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Hardback: 9780748409020
pub: 2005-07-21
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Alignment phenomena are characteristic of liquid crystalline materials, and understanding them is critically important in understanding the essential features and behavior of liquid crystals and the performance of Liquid Crystal Devices (LCDs). Furthermore, in LCD production lines, the alignment process is of practical importance. Alignment Technologies and Applications of Liquid Crystal Devices demonstrates both the fundamental and practical aspects of alignment phenomena in liquid crystals. The physical basis of alignment phenomena is first introduced in order to aid the understanding of the various physical phenomena observed in the interface between liquid crystalline materials and alignment layer surfaces. Methods for the characterization of surfaces, which induce the alignment phenomena, and of the alignment layer itself are introduced. These methods are useful for the research of liquid crystalline materials and devices in academic research as well as in industry. In the practical sections, the alignment methods used in the LCD production lines are introduced with various other trials for the alignment technologies. LCD performances are also discussed in relation to alignment phenomena.

The authors have a wide range of experience in both academic research and in industry. This book will be of interest to researchers and engineers working in the LCD industry, and for physics and chemistry researchers studying liquid crystalline materials.


“… the book does provide valuable information concerning the relationship between chemical structure of the alignment agent, its physical treatments and the resulting liquid crystal alignment. … The present book is certainly valuable to a wider readership of students, researchers and technologists involved with liquid crystals, their alignment and device applications. It gives a first introduction into various alignment techniques, as well as fundamental device geometries. … it represents a good basic introduction into alignment techniques and liquid crystal displays, giving valuable information on alignment materials, their treatment and effective results. …”

— Dr. Ingo Dierking, School of Physics and Astronomy, University of Manchester, UK, in ChemPhysChem, 2006

Table of Contents



Overview, Kohki Takatoh

Development of the LCD Market

Improvement of Viewing Angle Dependence of the Contrast Ratio

Ferroelectric and Antiferroelectric Liquid Crystals

Development of Novel Alignment Method

The Characteristics of this Book

RubbingTechnologies: Mechanisms and Applications,

Masaki Hasegawa


Rubbing Mechanisms


Non-rubbing Methods

Introduction, Masaki Hasegawa

Photoalignment, Masaki Hasegawa

Oblique Evaporation Method, Masanori Sakamoto

Liquid Crystal Alignment on Microgroove Surfaces, Kohki Takatoh

LB Membranes for the Alignment Layer, Kohki Takatoh

PTFE Drawn Films for Alignment Layers, Kohki Takatoh

Liquid Crystalline Alignment on Chemically Treated Surfaces, Kohki Takatoh

Applications of Nematic Liquid Crystals

Summary of Molecular Alignment and Device Applications, Ray Hasegawa

Twisted Nematic (TN), Ray Hasegawa

Super Twisted Nematic (STN), Nobuyuki Itoh

The IPS (In-Plane Switching) Mode, Mitsuhiro Koden

Vertical Alignment (VA) Mode and Multi-domain Vertical Alignment (MVA) Mode, Kohki Takatoh

Pi Cell, Masaki Hasegawa

Multi-domain Mode, Kohki Takatoh

Polymer Dispersed Liquid Crystals (PDLC), Ray Hasegawa

Alignment Phenomena of Smectic Liquid Crystals

Layer Structure and Molecular Orientation of Ferroelectric

Liquid Crystals, Nobuyuki Itoh

Alignment and Bistability of Ferroelectric Liquid Crystals, Kohki Takatoh

Applications of Ferroelectric and Antiferroelectric

Liquid Crystals

Molecular Orientations and Display Performance in FLC Displays, Mitsuhiro Koden

Alignment and Performance of AFLCD, Kohki Takatoh

Application of FLC/AFLC Materials to Active-matrix Devices, Kohki Takatoh


About the Series

Liquid Crystals Book Series

The Liquid Crystals Book Series publishes authoritative accounts of all aspects of the field, ranging from the basic fundamentals to the forefront of research, from the physics of liquid crystals to their chemical and biological properties, and from their self-assembling structures to their applications in devices. The series provides readers new to liquid crystals with a firm grounding in the subject, while offering experienced scientists and liquid crystallographers an indispensable resource to enhance their own research.

Learn more…

Subject Categories

BISAC Subject Codes/Headings:
SCIENCE / Chemistry / General
SCIENCE / Chemistry / Physical & Theoretical
SCIENCE / Chemistry / Industrial & Technical
SCIENCE / Solid State Physics