Simultaneous control of haze and transmittance using a dye-doped cholesteric liquid crystal cell

Abstract

We propose a light shutter device using dye-doped cholesteric liquid crystals for a high-visibility see-through display. In the focal-conic state, the proposed device can perfectly block the background image through simultaneous use of light scattering and absorption effects in a single-layered structure. By switching the proposed device placed at the backside of a see-through display, we can choose transparent or high-visibility display modes in a see-through display.

Keywords:

• liquid crystals
• light shutter
• see-through display
• smart window

Additional information

Funding

This work was supported by the IT R&D programme of MOTIE/KEIT [10042412, More than 60˝ Transparent Flexible Display with UD Resolution, Transparency 40% for Transparent Flexible Display in Large Area] and the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) [No. 2015021717].