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Alignment Technologies and Applications of Liquid Crystals by Kohki Takatoh, Masanori Sakamoto, Ray Hasegawa, Mitsushiro

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

Written by means of a bunch of authors, who've released greatly within the overseas examine literature, the publication takes an in depth examine a severe point of Liquid Crystal know-how - the alignment features and houses of the fabrics utilized in the development and use of LCDs. The booklet examines the chemical, actual and mechanical houses of the fabrics and relates them to functional functionality matters within the glossy Liquid Crystal. This authoritative sourcebook might be of significant worth for all fascinated with the sensible and theoretical problems with alignment phenomena in Liquid Crystals.

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Extra info for Alignment Technologies and Applications of Liquid Crystals

Example text

This depth is in good agreement with Aerle’s estimate [22]. 5 nm in depth, and it was assumed that the alignment layer was reoriented uniformly by the rubbing in the analysis of the results [50]. The relationship between the pretilt angle of the LC and the tilt angle of the main chains of PMDA-ODA, with different lengths of alkyl chain, was studied, and the generation of the pretilt angle of the LC was discussed [41, 54, 59]. 18 shows the relationship between the pretilt angle of the LC and the inclination angle of the polyimide main chain.

Reported that the phase retardation increased steadily with pile impression. The influence of the pile impression of the rubbing cloth on the rubbing-induced optical retardation Àr of the orienting layer, and on the normal force FN exerted by the rubbing cloth on the samples is shown in Fig. 7. Geary et al. 0 Pile impression (mm) Fig. 7 Influence of the pile impression of the rubbing cloth on the rubbinginduced optical retardation Àr of the orienting layer, and on the normal force FN exerted by the rubbing cloth on the samples.

This assumption was also confirmed by the IR measurements. He calculated the distribution of the alignment molecules by assuming a three layer structure consisting of a vacuum, an alignment layer, and a substrate. The planar stack model of three dielectric layers used for molecular orientation calculations is shown in Fig. 9. The analysis showed that the main chain of the polymer is oriented in the rubbing direction, and in the case of PMDA-ODA, it generated a tilt angle of 9. This result was in good agreement with the result from IR measurements [51].

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