Evaluation of curving characteristics of flexible liquid crystal displays fabricated using polycarbonate substrates

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Abstract

The improvement of the contrast ratio of flexible liquid crystal displays (LCDs) fabricated using plastic substrates in a curved state is an important problem to achieve high-quality flexible LCDs. In this study, we evaluated the distributions of in-plane phase retardation and slow axis direction of polycarbonate substrates and the effects of curvature on the electro-optical properties of flexible LCDs. As a result, we clarified that the polycarbonate substrates have high uniformity in the in-plane phase retardation and slow axis direction, and that the change in the phase retardation of the polycarbonate substrate caused by the curvature deformation has a small effect on the electro-optical characteristics of flexible LCDs. We successfully achieved a high contrast ratio of 1042 : 1 by fabricating the device using polycarbonate substrates. This result indicates that it is possible to realize high-quality images in flexible LCDs fabricated using polycarbonate substrates even in the curved state.

Original languageEnglish
Article number011701
JournalJapanese journal of applied physics
Volume55
Issue number1
DOIs
Publication statusPublished - 2016 Jan

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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