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A study on pretilt angle of liquid crystal with polarized UV light irradiation on soluble polyimide alignment films
- Issue Date
- 1999
- Publisher
- GORDON BREACH PUBLISHING, TAYLOR & FRANCIS GROUP
- Keywords
- photo-alignment layer; photocrosslinkable polyimide; pretilt angle
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.327, pp.153 - 156
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 327
- Start Page
- 153
- End Page
- 156
- ISSN
- 1058-725X
- Abstract
- We prepared photo-crosslinkable polyimide(PI) film, which contains CF(3) moiety. The ketone peak (at 1678cm(-1)) of PI was decreased and broad hydroxyl bond appeared. The decrease of ketone peak was also confirmed with UV-visible spectroscopy. The dichroic ratio of LC cell was obtained. The LC molecules are uniformly aligned perpendicular to polarization direction of irradiated light on PI layers. The pretilt angle of LC on alignment PI films was obtained to be about 3.3 degrees.
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Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
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