A reflective polarizer-free electro-optical switch using dye-doped polymer-stabilized blue phase liquid crystals

Yi-Hsin Lin*, Hung Shan Chen, Tsung Han Chiang, Chun Hung Wu, Hsu Kuan Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

We demonstrate a reflective polarizer-free electro-optical switch using dye-doped polymer-stabilized blue phase liquid crystals (DDPSBP-LC). At the voltage-off state, the dye molecules and liquid crystals form the structure of the double twist cylinders. As a result, the DDPSBP-LC is in dark state due to the combination of Bragg reflection and light absorption. At the voltage-on state, the blue phase structure is unwound locally. The DDPSBP-LC is then in bright state because of the small light absorption only. The applications of such a switch are shutter glass of 3D displays, and electronic papers.

Original languageEnglish
Pages (from-to)2556-2561
Number of pages6
JournalOptics Express
Volume19
Issue number3
DOIs
StatePublished - 31 Jan 2011

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