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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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 languageEnglish
Pages (from-to)J371-J374
JournalJournal of the Electrochemical Society
Issue number12
Publication statusPublished - 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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