Dual-response dimming device, preparation method thereof, dimming method and optical device

Abstract

The invention discloses a dimming device capable of simultaneously realizing electric response and temperature response, a preparation method thereof, a dimming method and an optical device. The dual-response dimming device comprises a first light transmitting substrate, a first electrode layer, a temperature response type polymer stabilized liquid crystal layer, an electric response type cholesteric liquid crystal layer, a second electrode layer and a second light transmitting substrate which are laminated in sequence, and the second electrode layer comprises an interdigitated electrode array. Compared with the technical scheme of singly using a polymer stabilized cholesteric liquid crystal layer to realize temperature response and the technical scheme of singly using a cholesteric liquidcrystal layer to realize electric response, the dual-response dimming device provided by the invention can achieve dual coupling of temperature response and electric response so as to meet the requirements of people for energy conservation, emission reduction and privacy protection. The dual-response dimming device provided by the invention has a variety of different light transmission states, thereby having rich modes, saving energy, protecting the environment and having a better application prospect in the fields of window glass, home glass windows, glass curtain walls and the like.

Description

technical field [0001] The invention relates to the technical field of smart home, in particular to a dual-response dimming device, a preparation method thereof, a dimming method and an optical device. Background technique [0002] Temperature-responsive dimming devices prepared from polymer-stabilized liquid crystal materials generally use liquid crystal materials with smectic phase-cholesteric phase transition. The molecular arrangement in vertical orientation under the stabilization effect, the dimming device is transparent and does not reflect infrared light; and under high temperature conditions, the smectic phase liquid crystal molecules will transform into cholesteric liquid crystals, and the cholesteric phase liquid crystals have periodic Helical structure, when the light is incident on the temperature-responsive dimming device, part of the polarized light in the same direction as the optical rotation is reflected, and part of the polarized light in the opposite dire...

AI Technical Summary

Problems solved by technology

However, due to the constraints of the currently used structure, the electric response dimming device cannot perform intelligent dimming like the temperature responsive dimming device; and the temperature responsive dimming device cannot realize the fuzzy state and the transparent state like the electric response dimming device conversion between

If the two are simply combined, they will affect each other under pressurized and / or heated conditions, and the electrical response and temperature response cannot be achieved separately at the same time

At the same time, the formed device has a complex structure and a large thickness, which will lead to low transmittance of the device, so it lacks practical feasibility.

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