Electrically controllable smart window with greyscale based on polymer-stabilised cholesteric texture films

ABSTRACT

The study reports a novel liquid crystal (LC) film that can be applied on the transmissive substrates or stuck on existing casement window to upgrade the shield. The shadow area and transmittance can be adjusted according to the condition of the outer sunshine. The window is energy saving for which maintains the transmittance after a once-off operation of pulse amplitude modulation (PAM) electric driving. Such a film can be applied in smart curtain, display frame edge and other transmissive electro-optical devices.

GRAPHICAL ABSTRACT

KEYWORDS:

• Liquid crystal
• cholesteric phase
• phase transition
• polymer liquid crystal composites

Acknowledgments

The authors would like to thank the National Science Council of Taiwan for financially supporting this research under Grant No. Ministry of science and technology (MOST) 102-2112-M-006-010-MY3.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Science Council of Taiwan; [grant number 102-2112-M-006-010-MY3]. The work was also partially supported by the Advanced Optoelectronic Technology Center.