Fast driving device and method for ferroelectric nematic liquid crystal

By using a non-orthogonal angle planar electrode design and control circuit to actively drive ferroelectric nematic liquid crystals, the problems of slow response speed and high energy consumption of traditional liquid crystals have been solved, achieving microsecond-level fast response and low energy consumption liquid crystal driving, thus expanding the application range.

CN121918331APending Publication Date: 2026-04-24NANCHANG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANCHANG UNIV
Filing Date
2026-02-28
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Traditional nematic liquid crystals have long response times and large driving electric fields, which limit their development in liquid crystal electro-optic devices. Furthermore, ferroelectric nematic liquid crystals have poor fluidity, which restricts their applications.

Method used

By employing a planar electrode design and control circuit with non-orthogonal included angles, the ferroelectric nematic liquid crystal is actively driven by alternating non-orthogonal planar electric fields, achieving rapid switching and recovery.

Benefits of technology

It achieves microsecond-level full-cycle fast response, eliminates the need for traditional alignment processes, improves response speed and reduces energy consumption, and expands the application prospects of ferroelectric nematic liquid crystals.

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Abstract

The invention provides a rapid driving device and method for ferroelectric nematic liquid crystals. The device comprises an upper substrate, a lower substrate and a ferroelectric nematic phase liquid crystal layer without an alignment layer, wherein the upper substrate and the lower substrate are oppositely arranged. The lower substrate is provided with a first electrode group for generating a first-direction planar electric field, the upper substrate is provided with a second electrode group for generating a second-direction planar electric field, and the first direction and the second direction intersect at a non-zero and non-right-angle included angle theta. The liquid crystal layer can be actively driven to be quickly switched between the first orientation state and the second orientation state by switching the driving voltage applied to different electrode groups through the control circuit. A double-electric-field active driving mechanism is utilized, the bottleneck that ferroelectric nematic phase liquid crystals are slow to close and recover is solved, the overall response speed is increased to the microsecond level, meanwhile, a PI alignment layer is omitted, the technology is simplified, and the continuous light intensity adjusting capacity is achieved.
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