A templated polymer stabilized cholesteric phase liquid crystal energy saving window device and its preparation method and application

By stabilizing the cholesteric phase liquid crystal structure with templated polymers, multi-band light reflection and transmission modulation of a single-layer smart window was achieved, solving the problems of slow transparency and response speed in existing technologies, reducing energy consumption and improving regulation capability.

CN116560146BActive Publication Date: 2026-05-26SHANGHAI JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Filing Date
2023-05-22
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing polymer-stabilized liquid crystal smart windows suffer from reduced transparency due to their multi-layered structure, increased manufacturing complexity and cost, inability to dynamically control infrared light, slow response speed and low stability, and limited visible light band adjustment capability, making it impossible to dynamically adjust the color and intensity of light according to needs.

Method used

By employing a templated polymer-stabilized cholesteric liquid crystal structure, and combining Bragg reflection in the infrared and visible light bands in a single-layer device, dynamic switching of light energy and color is achieved through temperature and electric field modulation, including electric field-driven modes such as vertical, fog, and focal conic states.

Benefits of technology

It improves response sensitivity, reduces energy consumption, enables flexible control of multi-band light reflection and transmission, enhances transparency and response speed, and is suitable for large-scale promotion.

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Abstract

This invention relates to the field of liquid crystal energy-saving window device technology, and particularly to a templated polymer-stabilized cholesteric liquid crystal energy-saving window device, its preparation method, and its application. This invention combines an infrared-band polymer template with adjacent-band cholesteric liquid crystals to achieve a single-layer structure that broadens the infrared Bragg reflection bandwidth. It also combines a visible-band polymer template with cholesteric liquid crystals of different bands to achieve a single-layer structure with multi-band Bragg reflection, thereby improving device transparency and reducing cost. By applying cholesteric liquid crystals of different Bragg reflection bands to the device structure, and by controlling the energy of the transmitted light beam and the tristable switching of the scattering transparency in the visible to infrared bands through temperature and electric field modulation, the response sensitivity is improved and energy consumption is reduced.
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