Bistable SmA liquid-crystal display driven by a two-direction electric field

Hui Yu Chen*, Renfan Shao, Eva Korblova, David Walba, Noel A. Clark, Wei Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A new operation mode of a bistable smectic A(SmA) display using two sets of electrodes, one without specific features to induce homeotropic orientation of the director and the other with an in-plane pattern to induce planar orientation of the director, has been demonstrated. Both statements of the director orientation are the stable states of SmA liquid crystals. Compared with the electrical addressing mode of a conventional SmA display, the SmA display mode presented in this study exhibits a high contrast ratio, excellent bistability, and reasonably fast switching under the employment of two crossed polarizers. Moreover, gray level can be achieved by regulating the frequency, owing to the formation of the focal-conic defect. This operation mode of a bistable SmA device demonstrated great potential for the further application in flexible displays.

Original languageEnglish
Pages (from-to)675-681
Number of pages7
JournalJournal of the Society for Information Display
Issue number6
StatePublished - 1 Jun 2008


  • Bistable display
  • Nanoparticle
  • Smectic liquid crystal

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