Liquid crystal alignment on inorganic film by ion beam irradiation for flexible display applications

Jeoung Yeon Hwang, Dae Shik Seo, Liang Chy Chien

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Liquid crystal alignment using ion beam (IB) irradiated a-C:H films on either plastic or glass substrates can be affected by the type of topographical structure. Strong IB irradiation induces greater roughness to the micro-groove on a plastic substrate, leading to a device with increased pretilt angle, fast response time and reduced threshold voltage. In contrast to the hysteresis in the transmittance-voltage curve of the rubbed polyimide film, which rapidly increases with increasing thermal and UV stress time, study of the residual DC voltage revealed no hysteresis on an a-C:H film due either to thermal or UV stress.

Original languageEnglish
Pages (from-to)877-883
Number of pages7
JournalLiquid Crystals
Volume38
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

Fingerprint

Flexible displays
Liquid Crystals
Liquid crystals
Ion beams
ion beams
liquid crystals
alignment
Irradiation
thermal stresses
irradiation
Hysteresis
plastics
hysteresis
Plastics
Time and motion study
Electric potential
electric potential
Substrates
Threshold voltage
polyimides

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Liquid crystal alignment on inorganic film by ion beam irradiation for flexible display applications",
abstract = "Liquid crystal alignment using ion beam (IB) irradiated a-C:H films on either plastic or glass substrates can be affected by the type of topographical structure. Strong IB irradiation induces greater roughness to the micro-groove on a plastic substrate, leading to a device with increased pretilt angle, fast response time and reduced threshold voltage. In contrast to the hysteresis in the transmittance-voltage curve of the rubbed polyimide film, which rapidly increases with increasing thermal and UV stress time, study of the residual DC voltage revealed no hysteresis on an a-C:H film due either to thermal or UV stress.",
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Liquid crystal alignment on inorganic film by ion beam irradiation for flexible display applications. / Hwang, Jeoung Yeon; Seo, Dae Shik; Chien, Liang Chy.

In: Liquid Crystals, Vol. 38, No. 7, 01.07.2011, p. 877-883.

Research output: Contribution to journalArticle

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