Formation of Polymer Walls by Monomer Aggregation Control Utilizing Substrate-Surface Wettability for Flexible LCDs

Seiya KAWAMORITA; Yosei SHIBATA; Takahiro ISHINABE; Hideo FUJIKAKE

doi:10.1587/transele.E100.C.1005

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Formation of Polymer Walls by Monomer Aggregation Control Utilizing Substrate-Surface Wettability for Flexible LCDs

Seiya KAWAMORITA, Yosei SHIBATA, Takahiro ISHINABE, Hideo FUJIKAKE

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Summary :

We examined the novel aggregation control of the LC and monomer during formation of the polymer walls from a LC/monomer mixture in order to suppress the presence of the residual monomers and polymer networks in the pixel areas. The method is utilization of the differing wettabilities among LC and monomer molecules on a substrate surface. We patterned a substrate surface with a fluororesin and a polyimide film, and promoted phase separation of the LC and monomer by cooling process. This resulted in the LC and monomer aggregates primarily existing in the pixel areas and non-pixel areas, respectively. Moreover, the polymer-walls structure which was formed in this method partitioned into individual pixels in a lattice region and prevented the LC from flowing. This polymer-walls formation technique will be useful for developing high-quality flexible LCDs.

Publication: IEICE TRANSACTIONS on Electronics Vol.E100-C No.11 pp.1005-1011

Publication Date: 2017/11/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E100.C.1005

Type of Manuscript: Special Section INVITED PAPER (Special Section on Electronic Displays)

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Authors

Seiya KAWAMORITA
  Tohoku University
Yosei SHIBATA
  Tohoku University
Takahiro ISHINABE
  Tohoku University
Hideo FUJIKAKE
  Tohoku University

Keyword

polymer wall, wettability, phase separation, fluororesin, polyimide film

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Seiya KAWAMORITA, Yosei SHIBATA, Takahiro ISHINABE, Hideo FUJIKAKE, "Formation of Polymer Walls by Monomer Aggregation Control Utilizing Substrate-Surface Wettability for Flexible LCDs" in IEICE TRANSACTIONS on Electronics, vol. E100-C, no. 11, pp. 1005-1011, November 2017, doi: 10.1587/transele.E100.C.1005.
Abstract: We examined the novel aggregation control of the LC and monomer during formation of the polymer walls from a LC/monomer mixture in order to suppress the presence of the residual monomers and polymer networks in the pixel areas. The method is utilization of the differing wettabilities among LC and monomer molecules on a substrate surface. We patterned a substrate surface with a fluororesin and a polyimide film, and promoted phase separation of the LC and monomer by cooling process. This resulted in the LC and monomer aggregates primarily existing in the pixel areas and non-pixel areas, respectively. Moreover, the polymer-walls structure which was formed in this method partitioned into individual pixels in a lattice region and prevented the LC from flowing. This polymer-walls formation technique will be useful for developing high-quality flexible LCDs.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E100.C.1005/_p

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@ARTICLE{e100-c_11_1005,
author={Seiya KAWAMORITA, Yosei SHIBATA, Takahiro ISHINABE, Hideo FUJIKAKE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Formation of Polymer Walls by Monomer Aggregation Control Utilizing Substrate-Surface Wettability for Flexible LCDs},
year={2017},
volume={E100-C},
number={11},
pages={1005-1011},
abstract={We examined the novel aggregation control of the LC and monomer during formation of the polymer walls from a LC/monomer mixture in order to suppress the presence of the residual monomers and polymer networks in the pixel areas. The method is utilization of the differing wettabilities among LC and monomer molecules on a substrate surface. We patterned a substrate surface with a fluororesin and a polyimide film, and promoted phase separation of the LC and monomer by cooling process. This resulted in the LC and monomer aggregates primarily existing in the pixel areas and non-pixel areas, respectively. Moreover, the polymer-walls structure which was formed in this method partitioned into individual pixels in a lattice region and prevented the LC from flowing. This polymer-walls formation technique will be useful for developing high-quality flexible LCDs.},
keywords={},
doi={10.1587/transele.E100.C.1005},
ISSN={1745-1353},
month={November},}

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TY - JOUR
TI - Formation of Polymer Walls by Monomer Aggregation Control Utilizing Substrate-Surface Wettability for Flexible LCDs
T2 - IEICE TRANSACTIONS on Electronics
SP - 1005
EP - 1011
AU - Seiya KAWAMORITA
AU - Yosei SHIBATA
AU - Takahiro ISHINABE
AU - Hideo FUJIKAKE
PY - 2017
DO - 10.1587/transele.E100.C.1005
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E100-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2017
AB - We examined the novel aggregation control of the LC and monomer during formation of the polymer walls from a LC/monomer mixture in order to suppress the presence of the residual monomers and polymer networks in the pixel areas. The method is utilization of the differing wettabilities among LC and monomer molecules on a substrate surface. We patterned a substrate surface with a fluororesin and a polyimide film, and promoted phase separation of the LC and monomer by cooling process. This resulted in the LC and monomer aggregates primarily existing in the pixel areas and non-pixel areas, respectively. Moreover, the polymer-walls structure which was formed in this method partitioned into individual pixels in a lattice region and prevented the LC from flowing. This polymer-walls formation technique will be useful for developing high-quality flexible LCDs.
ER -