Effects of Rubbing Condition and Soaking Time on Surface Crystallization of Rubbed Polyimide Film by Soaking into Acetone
Summary :
Rubbed polyimide films have been widely used as liquid crystal alignment films for liquid crystal displays. Washing after rubbing is essential to fabricate liquid crystal displays, and should affect alignment of liquid crystal as well as rubbing. We investigated the effects of rubbing condition and soaking in acetone on polyimide films by grazing incidence X-ray diffraction. It was found that soaking in acetone promoted crystallization of surface aligned polymers, and that the crystallization by acetone was dependent on the initial polymer alignment. The larger initial crystalline phase was, the more newly crystallization occurred by soaking. It was also revealed that the crystallization by soaking in acetone was completed within 1 min.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E91-C No.10 pp.1593-1598
- Publication Date
- 2008/10/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1093/ietele/e91-c.10.1593
- Type of Manuscript
- Special Section PAPER (Special Section on Electronic Displays)
- Category
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Ichiro HIROSAWA, Tomoyuki KOGANEZAWA, Takahiro SAKAI, "Effects of Rubbing Condition and Soaking Time on Surface Crystallization of Rubbed Polyimide Film by Soaking into Acetone" in IEICE TRANSACTIONS on Electronics,
vol. E91-C, no. 10, pp. 1593-1598, October 2008, doi: 10.1093/ietele/e91-c.10.1593.
Abstract: Rubbed polyimide films have been widely used as liquid crystal alignment films for liquid crystal displays. Washing after rubbing is essential to fabricate liquid crystal displays, and should affect alignment of liquid crystal as well as rubbing. We investigated the effects of rubbing condition and soaking in acetone on polyimide films by grazing incidence X-ray diffraction. It was found that soaking in acetone promoted crystallization of surface aligned polymers, and that the crystallization by acetone was dependent on the initial polymer alignment. The larger initial crystalline phase was, the more newly crystallization occurred by soaking. It was also revealed that the crystallization by soaking in acetone was completed within 1 min.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.10.1593/_p
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@ARTICLE{e91-c_10_1593,
author={Ichiro HIROSAWA, Tomoyuki KOGANEZAWA, Takahiro SAKAI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Effects of Rubbing Condition and Soaking Time on Surface Crystallization of Rubbed Polyimide Film by Soaking into Acetone},
year={2008},
volume={E91-C},
number={10},
pages={1593-1598},
abstract={Rubbed polyimide films have been widely used as liquid crystal alignment films for liquid crystal displays. Washing after rubbing is essential to fabricate liquid crystal displays, and should affect alignment of liquid crystal as well as rubbing. We investigated the effects of rubbing condition and soaking in acetone on polyimide films by grazing incidence X-ray diffraction. It was found that soaking in acetone promoted crystallization of surface aligned polymers, and that the crystallization by acetone was dependent on the initial polymer alignment. The larger initial crystalline phase was, the more newly crystallization occurred by soaking. It was also revealed that the crystallization by soaking in acetone was completed within 1 min.},
keywords={},
doi={10.1093/ietele/e91-c.10.1593},
ISSN={1745-1353},
month={October},}
Copy
TY - JOUR
TI - Effects of Rubbing Condition and Soaking Time on Surface Crystallization of Rubbed Polyimide Film by Soaking into Acetone
T2 - IEICE TRANSACTIONS on Electronics
SP - 1593
EP - 1598
AU - Ichiro HIROSAWA
AU - Tomoyuki KOGANEZAWA
AU - Takahiro SAKAI
PY - 2008
DO - 10.1093/ietele/e91-c.10.1593
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2008
AB - Rubbed polyimide films have been widely used as liquid crystal alignment films for liquid crystal displays. Washing after rubbing is essential to fabricate liquid crystal displays, and should affect alignment of liquid crystal as well as rubbing. We investigated the effects of rubbing condition and soaking in acetone on polyimide films by grazing incidence X-ray diffraction. It was found that soaking in acetone promoted crystallization of surface aligned polymers, and that the crystallization by acetone was dependent on the initial polymer alignment. The larger initial crystalline phase was, the more newly crystallization occurred by soaking. It was also revealed that the crystallization by soaking in acetone was completed within 1 min.
ER -
English
