Control of electric equi-potential in a liquid crystal film on a grating surface

Tae Young Yoon, Chang Jae Yu, Won Je Lee, Jae Sung Sim, Jae Hong Park, Sin Doo Lee

Research output: Contribution to journalArticle


We report theoretical results for the distortions of electric equi-potential (EEP) planes in a liquid crystal (LC) film in the presence of surface geometrical grating (SGG). A scaled parameter, the ratio of capacitance per unit area of a LC to that of SGG, is introduced into a simple model to predict the distortions of EEP planes. It is found that the distortions of EEP planes are enhanced by increasing the spatial variations of this scaled parameter inside LC cell. These spatial variations naturally induce the spatially periodic deformations of the LC director which can be employed as a voltage-controlled optical grating.

Original languageEnglish
Pages (from-to)647-650
Number of pages4
JournalOptical Materials
Issue number1-3
Publication statusPublished - 2003 Jan



  • Electrooptic properties
  • Liquid crystal
  • Liquid crystal display
  • Wide viewing

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