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 |
Section | 一般 |
Research Field |
Polymer/Textile materials
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Research Institution | Yamagata University |
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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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
|
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 / ホメオトロピック / 応答時間 |
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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Report
(4 results)
Research Products
(51 results)
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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)
Issue: 5
Pages: 934-943
DOI
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Peer Reviewed
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[Presentation] Alignment and Electro-Optical Properties of Nematic LCs by Using Dendrimers2013
Author(s)
Y. Takahashi, T. Sakuma, O. Haba, T. Koda, K. Yonetake, M. Kwak, N. Kim, S. Choi, D. Kang, Y. Choi, S. Jeon, Y. Momoi
Organizer
IDW’13
Place of Presentation
札幌コンベンションセンター、札幌
Related Report
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[Presentation] Monte Carlo Simulation for Molecular Orientation in Mixture of LC and Dendrimers Using Hard Repulsive Model Molecules2013
Author(s)
M. Uchida, T. Koda, A. Nishioka, O. Haba, K. Yonetake, M. Kwak, Y.Momoi, S. An, D. Kang, Y. Choi, S. Jeon
Organizer
IDW’13
Place of Presentation
札幌コンベンションセンター、札幌
Related Report
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[Presentation] Effects of dendrimers on liquid crystal alignment in liquid crystal display, 24th International Liquid Crystal Conference2012
Author(s)
N. Funakoshi, H. Awano, O. Haba, T. Koda, T. Takahashi, K. Yonetake, M. Kwak, Y. Momoi, K. Furuta
Organizer
24th International Liquid Crystal Conference
Place of Presentation
Convention Center Rheingoldhalle (Mainz, Germany)
Related Report
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[Presentation] Polyimide-Less Alignment by Dendrimers Dissolved in Liquid Crystal2012
Author(s)
T. Sakuma, N. Funakoshi, Y. Takahashi, M. Uchida, T. Koda, O. Haba, K. Yonetake, M. Kwak, Y. Momoi, J. Jeon, S. An, D. Choi, D. Kang, Y. Choi, S. Jeon
Organizer
The 19th International Display Workshops in conjunction with Asia Display 2012
Place of Presentation
International Conference Center (Kyoto, Japan)
Related Report
Invited
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