Low driving voltage fast response intelligent dimming film

By constructing a polymer network in the liquid crystal dimming film and utilizing the synergistic effect of the ferroelectric liquid crystal and the polymer network, a fast response under low driving voltage is achieved, solving the problems of high driving voltage and slow response speed of existing liquid crystal dimming film devices, and improving safety and energy efficiency.

CN120195906BActive Publication Date: 2026-07-07NANJING UNIV OF POSTS & TELECOMM
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Filing Date
2025-03-24
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing liquid crystal dimming film devices suffer from high driving voltage and slow response speed, which limits their application in applications with high safety requirements and makes it difficult to meet the energy conservation and emission reduction needs of modern society.

Method used

By performing ultraviolet light polymerization on a mixture of ferroelectric nematic liquid crystal, liquid crystal monomers and non-liquid crystal monomers, a polymer network is constructed. By utilizing the high dielectric constant of the ferroelectric liquid crystal and the pre-orientation effect of the polymer network, the switching between transparent and scattering states under low driving voltage can be achieved.

Benefits of technology

It achieves a fast response under low driving voltage, with a minimum threshold voltage of 0.5 V and a minimum saturation voltage of 9.0 V. It has a fast response speed, low energy consumption, high safety, and is simple to prepare and has a low cost.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120195906B_ABST
    Figure CN120195906B_ABST
Patent Text Reader

Abstract

The application provides a low driving voltage fast response intelligent dimming film, and belongs to the technical field of liquid crystal dimming films.The ferroelectric nematic liquid crystal DIO, liquid crystal monomer RM257, non-liquid crystal monomer EHA and photoinitiator IRG 651 are uniformly mixed in a certain proportion, then are poured into a liquid crystal cell with an indium tin oxide electrode at a certain temperature, wires are connected to the electrode and an alternating electric field with a certain intensity is applied, at the same time, ultraviolet irradiation is adopted to polymerize to complete curing, and thus an intelligent film based on polymer-restrained ferroelectric nematic liquid crystal with super-low driving voltage and fast response speed is obtained.The intelligent film has simple preparation, high yield, low driving voltage and stable performance, and can greatly reduce the energy consumption of building materials and improve the use safety.
Need to check novelty before this filing date? Find Prior Art