Alignment Control of Liquid Crystal Molecules using Photo-Dimerization Reaction of Poly(Vinyl Cinnamate)
Summary :
We have studied liquid crystal (LC) alignment on UV-irradiated poly(vinyl cinnamate)(PVCi)films by using the texture observations and the anchoring energy measurements. Irradiation of the PVCi films with linearly-polarized UV light creates the optical anisotropy in the films, and the anisotropy can well align LCs perpendicular to the UV polarization. We discuss the LC alignment mechanisms and point out the important contribution from non-dimerized side chains of PVCi molecules. The anchoring energies on photo-processed PVCi films are shown to be smaller than those on conventional rubbed polyimide films. We propose a new method to generate pretilt angle on the photo-processed PVCi films, and successful results of pretilt angle generation are demonstrated. This method is applied to fabricate TN- and super-multidomain TN-LCDs, and the good electro-optical performance of the LCDs is confirmed.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E79-C No.8 pp.1040-1046
- Publication Date
- 1996/08/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section INVITED PAPER (Special Issue on Liquid-Crystal Displays)
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Yasufumi IIMURA, Shunsuke KOBAYASHI, Toru HASHIMOTO, Takashi SUGIYAMA, Kazuhisa KATOH, "Alignment Control of Liquid Crystal Molecules using Photo-Dimerization Reaction of Poly(Vinyl Cinnamate)" in IEICE TRANSACTIONS on Electronics,
vol. E79-C, no. 8, pp. 1040-1046, August 1996, doi: .
Abstract: We have studied liquid crystal (LC) alignment on UV-irradiated poly(vinyl cinnamate)(PVCi)films by using the texture observations and the anchoring energy measurements. Irradiation of the PVCi films with linearly-polarized UV light creates the optical anisotropy in the films, and the anisotropy can well align LCs perpendicular to the UV polarization. We discuss the LC alignment mechanisms and point out the important contribution from non-dimerized side chains of PVCi molecules. The anchoring energies on photo-processed PVCi films are shown to be smaller than those on conventional rubbed polyimide films. We propose a new method to generate pretilt angle on the photo-processed PVCi films, and successful results of pretilt angle generation are demonstrated. This method is applied to fabricate TN- and super-multidomain TN-LCDs, and the good electro-optical performance of the LCDs is confirmed.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e79-c_8_1040/_p
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@ARTICLE{e79-c_8_1040,
author={Yasufumi IIMURA, Shunsuke KOBAYASHI, Toru HASHIMOTO, Takashi SUGIYAMA, Kazuhisa KATOH, },
journal={IEICE TRANSACTIONS on Electronics},
title={Alignment Control of Liquid Crystal Molecules using Photo-Dimerization Reaction of Poly(Vinyl Cinnamate)},
year={1996},
volume={E79-C},
number={8},
pages={1040-1046},
abstract={We have studied liquid crystal (LC) alignment on UV-irradiated poly(vinyl cinnamate)(PVCi)films by using the texture observations and the anchoring energy measurements. Irradiation of the PVCi films with linearly-polarized UV light creates the optical anisotropy in the films, and the anisotropy can well align LCs perpendicular to the UV polarization. We discuss the LC alignment mechanisms and point out the important contribution from non-dimerized side chains of PVCi molecules. The anchoring energies on photo-processed PVCi films are shown to be smaller than those on conventional rubbed polyimide films. We propose a new method to generate pretilt angle on the photo-processed PVCi films, and successful results of pretilt angle generation are demonstrated. This method is applied to fabricate TN- and super-multidomain TN-LCDs, and the good electro-optical performance of the LCDs is confirmed.},
keywords={},
doi={},
ISSN={},
month={August},}
Copy
TY - JOUR
TI - Alignment Control of Liquid Crystal Molecules using Photo-Dimerization Reaction of Poly(Vinyl Cinnamate)
T2 - IEICE TRANSACTIONS on Electronics
SP - 1040
EP - 1046
AU - Yasufumi IIMURA
AU - Shunsuke KOBAYASHI
AU - Toru HASHIMOTO
AU - Takashi SUGIYAMA
AU - Kazuhisa KATOH
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E79-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 1996
AB - We have studied liquid crystal (LC) alignment on UV-irradiated poly(vinyl cinnamate)(PVCi)films by using the texture observations and the anchoring energy measurements. Irradiation of the PVCi films with linearly-polarized UV light creates the optical anisotropy in the films, and the anisotropy can well align LCs perpendicular to the UV polarization. We discuss the LC alignment mechanisms and point out the important contribution from non-dimerized side chains of PVCi molecules. The anchoring energies on photo-processed PVCi films are shown to be smaller than those on conventional rubbed polyimide films. We propose a new method to generate pretilt angle on the photo-processed PVCi films, and successful results of pretilt angle generation are demonstrated. This method is applied to fabricate TN- and super-multidomain TN-LCDs, and the good electro-optical performance of the LCDs is confirmed.
ER -
English
