Homeotropic alignment of liquid crystals on a nano-patterned polyimide surface using nanoimprint lithography

Hong Gyu Park; Jong Jin Lee; Ki Young Dong; Byeong Yun Oh; Young Hwan Kim; Hae Yoon Jeong; Byeong Kwon Ju; Dae Shik Seo

doi:10.1039/c1sm05083d

Homeotropic alignment of liquid crystals on a nano-patterned polyimide surface using nanoimprint lithography

Hong Gyu Park
, Jong Jin Lee
, Ki Young Dong
, Byeong Yun Oh
, Young Hwan Kim
, Hae Yoon Jeong
, Byeong Kwon Ju^*
, Dae Shik Seo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

80 Citations (Scopus)

Abstract

In this paper, nanoimprint lithography was utilized to transfer a nano-pattern (NP) onto a homeotropic polyimide (PI) surface for use in liquid crystal displays (LCDs). The nano-patterned silicon mold was fabricated by laser interference lithography. A NP PI layer acted as the homeotropic alignment layer to easily and uniformly align the liquid crystal (LC) molecules. A NP LC cell with a NP PI layer was successfully operated as a vertical aligned LCD, and its performance was evaluated. The threshold voltage and response time of the NP LC cell were 2.472 V and 22.7 ms, respectively. In addition, the NP LC cell was characterized by a high thermal budget. Therefore, the competitive performance of the NP LC cell could allow new approaches to replace the conventional rubbing process in display technology.

Original language	English
Pages (from-to)	5610-5614
Number of pages	5
Journal	Soft Matter
Volume	7
Issue number	12
DOIs	https://doi.org/10.1039/c1sm05083d
Publication status	Published - 2011 Jun 21

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics

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title = "Homeotropic alignment of liquid crystals on a nano-patterned polyimide surface using nanoimprint lithography",

abstract = "In this paper, nanoimprint lithography was utilized to transfer a nano-pattern (NP) onto a homeotropic polyimide (PI) surface for use in liquid crystal displays (LCDs). The nano-patterned silicon mold was fabricated by laser interference lithography. A NP PI layer acted as the homeotropic alignment layer to easily and uniformly align the liquid crystal (LC) molecules. A NP LC cell with a NP PI layer was successfully operated as a vertical aligned LCD, and its performance was evaluated. The threshold voltage and response time of the NP LC cell were 2.472 V and 22.7 ms, respectively. In addition, the NP LC cell was characterized by a high thermal budget. Therefore, the competitive performance of the NP LC cell could allow new approaches to replace the conventional rubbing process in display technology.",

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year = "2011",

month = jun,

day = "21",

doi = "10.1039/c1sm05083d",

language = "English",

volume = "7",

pages = "5610--5614",

journal = "Soft Matter",

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TY - JOUR

T1 - Homeotropic alignment of liquid crystals on a nano-patterned polyimide surface using nanoimprint lithography

AU - Park, Hong Gyu

AU - Lee, Jong Jin

AU - Dong, Ki Young

AU - Oh, Byeong Yun

AU - Kim, Young Hwan

AU - Jeong, Hae Yoon

AU - Ju, Byeong Kwon

AU - Seo, Dae Shik

PY - 2011/6/21

Y1 - 2011/6/21

N2 - In this paper, nanoimprint lithography was utilized to transfer a nano-pattern (NP) onto a homeotropic polyimide (PI) surface for use in liquid crystal displays (LCDs). The nano-patterned silicon mold was fabricated by laser interference lithography. A NP PI layer acted as the homeotropic alignment layer to easily and uniformly align the liquid crystal (LC) molecules. A NP LC cell with a NP PI layer was successfully operated as a vertical aligned LCD, and its performance was evaluated. The threshold voltage and response time of the NP LC cell were 2.472 V and 22.7 ms, respectively. In addition, the NP LC cell was characterized by a high thermal budget. Therefore, the competitive performance of the NP LC cell could allow new approaches to replace the conventional rubbing process in display technology.

AB - In this paper, nanoimprint lithography was utilized to transfer a nano-pattern (NP) onto a homeotropic polyimide (PI) surface for use in liquid crystal displays (LCDs). The nano-patterned silicon mold was fabricated by laser interference lithography. A NP PI layer acted as the homeotropic alignment layer to easily and uniformly align the liquid crystal (LC) molecules. A NP LC cell with a NP PI layer was successfully operated as a vertical aligned LCD, and its performance was evaluated. The threshold voltage and response time of the NP LC cell were 2.472 V and 22.7 ms, respectively. In addition, the NP LC cell was characterized by a high thermal budget. Therefore, the competitive performance of the NP LC cell could allow new approaches to replace the conventional rubbing process in display technology.

UR - https://www.scopus.com/pages/publications/79959204803

U2 - 10.1039/c1sm05083d

DO - 10.1039/c1sm05083d

M3 - Article

AN - SCOPUS:79959204803

SN - 1744-683X

VL - 7

SP - 5610

EP - 5614

JO - Soft Matter

JF - Soft Matter

IS - 12

ER -

Homeotropic alignment of liquid crystals on a nano-patterned polyimide surface using nanoimprint lithography

Abstract

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