2013 Fiscal Year Final Research Report
Development on novel liquid crystal displays without using any alignment layers by surface structural arrangement of dendrimers
| Project/Area Number |
23350108
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KODA Tomonori 山形大学, 大学院・理工学研究科, 准教授 (60261715)
HABA Osamu 山形大学, 大学院・理工学研究科, 准教授 (70261328)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAHASHI Tatsuhiro 山形大学, 大学院・理工学研究科, 教授 (60344818)
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| Project Period (FY) |
2011-11-18 – 2014-03-31
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| Keywords | デンドリマー / 液晶 / ディスプレイ / 配向膜 / 垂直配向 / ホメオトロピック配向 / ネマチック液晶 / プラスチック基板 |
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| Research Abstract |
Liquid crystalline displays (LCDs) generally use polyimide alignment layers to determine the director orientation of liquid crystal molecules on voltage-off state. The preparation of the alignment layer usually requires large quantities of solvent, high temperature operation, and rubbing process, which has harmful influence on integrated circuits of LCDs and cleanliness of clean rooms. We have developed LCDs without any polyimide layers simply by dissolving liquid crystalline dendrimers into nematic liquid crystal. The liquid crystalline dendrimers induced vertical alignment of liquid crystal molecules on the bare glass and ITO glass. And we have successfully developed LCDs with plastic substrates instead of glasses, because the novel preparation process of LCDs needs no high-temperature process.
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[Journal Article] Homeotropic Orientation of Nematic Liquid Crystals Induced by Dissolving Polypropyleneimine Dendrimer Having Peripheral Mesogens2014
Author(s)
O. Haba, D. Hiratsuka, T. Shiraiwa, N. Funakoshi, H. Awano, T. Koda, T. Takahashi, K. Yonetake, M. Kwak, Y. Momoi, N. Kim, S. Hong, D. Kang, and Y. Choi
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Journal Title
Optical Materials Express
Volume: 4 (5)
Pages: 934-943
DOI
Peer Reviewed
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