Polymer dispersed liquid crystal composition, polymer dispersed liquid crystal layer and preparation method, polymer dispersed liquid crystal film and preparation method

A technology for dispersing liquid crystals and polymers, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of reduced on-state transmittance, difficulty in obtaining, and increased driving voltage, etc., and achieve the reduction of on-state transmittance Effect
CN101768449AActive Publication Date: 2010-07-07BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BYD CO LTD
Publication Date
2010-07-07

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Abstract

The invention provides a polymer dispersed liquid crystal layer and a polymer dispersed liquid crystal film containing the polymer dispersed liquid crystal layer. The polymer dispersed liquid crystal layer is non-white. A polymer dispersed liquid crystal composition comprises a polymer monomer, a liquid crystal and a dye. The polymer dispersed liquid crystal layer comprises a three-dimensional porous structure formed by polymers. The pores are filled with liquid crystal droplets and have an average pore size of 2-5mu m. The invention also provides the polymer dispersed liquid crystal composition and methods for preparing the polymer dispersed liquid crystal layer and the polymer dispersed liquid crystal film. By adopting the non-white polymer dispersed liquid crystal layer or the polymer dispersed liquid crystal film containing the polymer dispersed liquid crystal layer, the driving voltage can be simultaneously less than or equal to 40V and the on-state transmittance under 40V can bemore than 75%.
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Description

technical field

[0001] The invention relates to a polymer dispersed liquid crystal composition, a polymer dispersed liquid crystal layer and a preparation method thereof, a polymer dispersed liquid crystal film and a preparation method thereof. Background technique

[0002] Polymer dispersed liquid crystals (Polymer dispersed liquid crystals, PDLC) film is a kind of photoelectric composite material, in polymer dispersed liquid crystal film, liquid crystal droplets of micron scale are dispersed in solid polymer matrix. The polymer-dispersed liquid crystal film is changed from opaque to transparent by applying an electric field, so that the light transmittance of the film can be adjusted.

[0003] During preparation, when the mixture of polymer monomer and liquid crystal is heated to a temperature above the clearing point, the liquid crystal is transformed from a crystalline state to a liquid state, fully mixed with the polymer monomer, and the external ambient temperature coo...

Claims

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