Abstract
This article provides a review on the experimental aspects of the alignment of nematic liquid crystal (NLC) in the pretilted homogeneous form in the sandwich cells; most of the contents of this paper are the results of research done by the authors in these few years. For simplicity and convenience, we used nematic liquid crystal (5CB) only; however, we have explored several polymer orientation films such as alkylbranched or alkylbranchless polyimide (PI), PI-Langmuir-Blodgett (LB) films, and those of polypyrrole. All these films were rubbed prior to assemble the cells except for some cases of PI-LB films. These films were characterized in terms of the atomic force microscope (AFM) observation and the optical retardation that are induced by the rubbing or unidirectional pulling up of the substrates in the LB process. Aligning capabilities of these orientation films for 5CB have been evaluated in terms of the texture of the NLC media, generation of pretilt angles, and temperature dependence of the anchoring strength (energies). Some results of this investigation is thought to partially contribute to provide several practical techniques for LCD technologies and to have some understanding the complicated surface anchoring phenomena.
| Original language | English |
|---|---|
| Pages (from-to) | 13-31 |
| Number of pages | 19 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals |
| Volume | 224 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
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Alignment of Nematic Liquid Crystal(5CB) on the Treated Substrates : Characterization of Orientation Films, Generation of Pretilt Angles, and Surface Anchoring Strength. / Seo, Dae-Shik; Matsuda, H.; Oh-Ide, T.; Kobayashi, S.
In: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol. 224, No. 1, 01.01.1993, p. 13-31.Research output: Contribution to journal › Article
TY - JOUR
T1 - Alignment of Nematic Liquid Crystal(5CB) on the Treated Substrates
T2 - Characterization of Orientation Films, Generation of Pretilt Angles, and Surface Anchoring Strength
AU - Seo, Dae-Shik
AU - Matsuda, H.
AU - Oh-Ide, T.
AU - Kobayashi, S.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - This article provides a review on the experimental aspects of the alignment of nematic liquid crystal (NLC) in the pretilted homogeneous form in the sandwich cells; most of the contents of this paper are the results of research done by the authors in these few years. For simplicity and convenience, we used nematic liquid crystal (5CB) only; however, we have explored several polymer orientation films such as alkylbranched or alkylbranchless polyimide (PI), PI-Langmuir-Blodgett (LB) films, and those of polypyrrole. All these films were rubbed prior to assemble the cells except for some cases of PI-LB films. These films were characterized in terms of the atomic force microscope (AFM) observation and the optical retardation that are induced by the rubbing or unidirectional pulling up of the substrates in the LB process. Aligning capabilities of these orientation films for 5CB have been evaluated in terms of the texture of the NLC media, generation of pretilt angles, and temperature dependence of the anchoring strength (energies). Some results of this investigation is thought to partially contribute to provide several practical techniques for LCD technologies and to have some understanding the complicated surface anchoring phenomena.
AB - This article provides a review on the experimental aspects of the alignment of nematic liquid crystal (NLC) in the pretilted homogeneous form in the sandwich cells; most of the contents of this paper are the results of research done by the authors in these few years. For simplicity and convenience, we used nematic liquid crystal (5CB) only; however, we have explored several polymer orientation films such as alkylbranched or alkylbranchless polyimide (PI), PI-Langmuir-Blodgett (LB) films, and those of polypyrrole. All these films were rubbed prior to assemble the cells except for some cases of PI-LB films. These films were characterized in terms of the atomic force microscope (AFM) observation and the optical retardation that are induced by the rubbing or unidirectional pulling up of the substrates in the LB process. Aligning capabilities of these orientation films for 5CB have been evaluated in terms of the texture of the NLC media, generation of pretilt angles, and temperature dependence of the anchoring strength (energies). Some results of this investigation is thought to partially contribute to provide several practical techniques for LCD technologies and to have some understanding the complicated surface anchoring phenomena.
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UR - http://www.scopus.com/inward/citedby.url?scp=0002930842&partnerID=8YFLogxK
U2 - 10.1080/10587259308032475
DO - 10.1080/10587259308032475
M3 - Article
AN - SCOPUS:0002930842
VL - 224
SP - 13
EP - 31
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
SN - 1542-1406
IS - 1
ER -