A High-Retardation Polymer Film for Viewing Liquid Crystal Displays through Polarized Sunglasses without Chromaticity Change in the Image

Daisuke Kobayashi, Akihiro Tagaya, Yasuhiro Koike

Research output: Contribution to journalArticle

5 Citations (Scopus)


We describe a high-retardation polymer film (HRPF) that enables liquid crystal displays (LCDs) to be viewed through polarized sunglasses at all rotation angles without any chromaticity changes in the image. We investigated the relationship between retardation and polymer interference color after developing a program that simulates the interference colors of polymers taking into consideration the polymer birefringence dispersion and LCD emission light spectrum. As a result, we confirmed that the retardation value required for our HRPF made of polyethylene terephthalate and applied to an LCD with white LED backlight was not less than 7832 nm. We also confirmed that the image quality was not degraded by attaching the HRPF to the LCD, and chromaticity change in the image observed through HRPF and polarized sunglasses was negligible compared to the LCD image.

Original languageEnglish
Article number042602
JournalJapanese journal of applied physics
Issue number4 PART 1
Publication statusPublished - 2011 Apr 1


ASJC Scopus subject areas

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

Cite this