Flexible liquid-crystal display stabilized by pixel walls directly bonded via ion-beam irradiation

Young Hwan Kim; Hong Gyu Park; Byeong Yun Oh; Byoung Yong Kim; Kyeong Kap Paek; Dae Shik Seo

doi:10.1149/1.2994632

Flexible liquid-crystal display stabilized by pixel walls directly bonded via ion-beam irradiation

Young Hwan Kim, Hong Gyu Park, Byeong Yun Oh, Byoung Yong Kim, Kyeong Kap Paek, Dae Shik Seo

Department of Electrical and Electronic Engineering

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

6 Citations (Scopus)

Abstract

We characterize a flexible self-assembled liquid crystal display (LCD) fabricated from a polyimide (PI) alignment layer with polydimethylsiloxane (PDMS) pixel walls. Ion-beam irradiation aligned liquid crystal molecules in the PI layer and bonded two flexible plastic substrates in a one-step assembly of the pixel walls. X-ray photoelectron spectroscopic analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy provided chemical and physical evidence for the formation of stable chemical bonds between the PI layer and the PDMS pixel walls, in addition to the important maintenance of a uniform 6 μm gap between the two substrates without the use of any epoxy resins or other polymers. Electro-optical performance of our flexible device was highly reliable, even under deformation conditions, and is comparable to that of conventional rigid glass substrate LCDs.

Original language	English
Pages (from-to)	J371-J374
Journal	Journal of the Electrochemical Society
Volume	155
Issue number	12
DOIs	https://doi.org/10.1149/1.2994632
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1.2994632

Cite this

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title = "Flexible liquid-crystal display stabilized by pixel walls directly bonded via ion-beam irradiation",

abstract = "We characterize a flexible self-assembled liquid crystal display (LCD) fabricated from a polyimide (PI) alignment layer with polydimethylsiloxane (PDMS) pixel walls. Ion-beam irradiation aligned liquid crystal molecules in the PI layer and bonded two flexible plastic substrates in a one-step assembly of the pixel walls. X-ray photoelectron spectroscopic analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy provided chemical and physical evidence for the formation of stable chemical bonds between the PI layer and the PDMS pixel walls, in addition to the important maintenance of a uniform 6 μm gap between the two substrates without the use of any epoxy resins or other polymers. Electro-optical performance of our flexible device was highly reliable, even under deformation conditions, and is comparable to that of conventional rigid glass substrate LCDs.",

author = "Kim, {Young Hwan} and Park, {Hong Gyu} and Oh, {Byeong Yun} and Kim, {Byoung Yong} and Paek, {Kyeong Kap} and Seo, {Dae Shik}",

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T1 - Flexible liquid-crystal display stabilized by pixel walls directly bonded via ion-beam irradiation

AU - Kim, Young Hwan

AU - Park, Hong Gyu

AU - Oh, Byeong Yun

AU - Kim, Byoung Yong

AU - Paek, Kyeong Kap

AU - Seo, Dae Shik

PY - 2008

Y1 - 2008

N2 - We characterize a flexible self-assembled liquid crystal display (LCD) fabricated from a polyimide (PI) alignment layer with polydimethylsiloxane (PDMS) pixel walls. Ion-beam irradiation aligned liquid crystal molecules in the PI layer and bonded two flexible plastic substrates in a one-step assembly of the pixel walls. X-ray photoelectron spectroscopic analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy provided chemical and physical evidence for the formation of stable chemical bonds between the PI layer and the PDMS pixel walls, in addition to the important maintenance of a uniform 6 μm gap between the two substrates without the use of any epoxy resins or other polymers. Electro-optical performance of our flexible device was highly reliable, even under deformation conditions, and is comparable to that of conventional rigid glass substrate LCDs.

AB - We characterize a flexible self-assembled liquid crystal display (LCD) fabricated from a polyimide (PI) alignment layer with polydimethylsiloxane (PDMS) pixel walls. Ion-beam irradiation aligned liquid crystal molecules in the PI layer and bonded two flexible plastic substrates in a one-step assembly of the pixel walls. X-ray photoelectron spectroscopic analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy provided chemical and physical evidence for the formation of stable chemical bonds between the PI layer and the PDMS pixel walls, in addition to the important maintenance of a uniform 6 μm gap between the two substrates without the use of any epoxy resins or other polymers. Electro-optical performance of our flexible device was highly reliable, even under deformation conditions, and is comparable to that of conventional rigid glass substrate LCDs.

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Flexible liquid-crystal display stabilized by pixel walls directly bonded via ion-beam irradiation

Abstract

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