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Composition for forming polymer-dispersed liquid crystal, polymer-dispersed liquid crystal coating and self-illuminating dimming film

A technology for dispersing liquid crystals and compositions, applied in coatings, liquid crystal materials, optics, etc., can solve problems such as the inability to truly realize color changes, and achieve high open-state transmittance, reversible color changes, and good separation and formability

Active Publication Date: 2017-10-27
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a composition for forming polymer-dispersed liquid crystals, a polymer-dispersed liquid crystal coating, and a self-illuminating dimming film, so as to solve the defect that the color change cannot be truly realized by using the existing technology

Method used

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  • Composition for forming polymer-dispersed liquid crystal, polymer-dispersed liquid crystal coating and self-illuminating dimming film
  • Composition for forming polymer-dispersed liquid crystal, polymer-dispersed liquid crystal coating and self-illuminating dimming film
  • Composition for forming polymer-dispersed liquid crystal, polymer-dispersed liquid crystal coating and self-illuminating dimming film

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preparation example Construction

[0053] The preparation method of each layer of the dimming film provided by the present invention is as follows:

[0054] The transparent substrate layer and the transparent electrode layer adopt commercially available materials, and the transparent electrode layer is a well-known conductive layer for those skilled in the art, including but not limited to the nano-indium tin metal oxide conductive layer; the transparent substrate layer is a technology in the art The material of the transparent substrate known to personnel includes, but is not limited to, one of glass, polycarbonate, and polyethylene terephthalate.

[0055] The preparation method of the PDLC / electroluminescent color-changing layer is as follows: the PDLC / electroluminescent color-changing layer is prepared by the polymerization-induced phase separation method (PISP), which is to mix the prepolymer UV glue with the liquid crystal to form a homogeneous solution. Radiation polymerization or direct photoinitiated po...

Embodiment 1

[0060] like figure 1 , the structure of the self-luminous dimming film in this embodiment is as follows from top to bottom: the first transparent substrate 110; the first transparent electrode 210; the polymer dispersed liquid crystal coating 300; the second transparent electrode 220; Material 120.

[0061] The composition of the PDLC composition is shown in Table 1; the light transmittance, haze, luminous color, and brightness properties of the self-luminous dimming film are shown in Table 2.

Embodiment 2

[0063] like figure 1 , the structure of the self-luminous dimming film in this embodiment is as follows from top to bottom: the first transparent substrate 110; the first transparent electrode 210; the polymer dispersed liquid crystal coating 300; the second transparent electrode 220; Material 120.

[0064] The composition of the PDLC composition is shown in Table 1; the light transmittance, haze, luminous color, and brightness properties of the self-luminous dimming film are shown in Table 2.

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Abstract

The invention provides a composition for forming polymer-dispersed liquid crystals, a polymer-dispersed liquid crystal coating and a self-illuminating dimming film. The composition includes adhesive, inorganic electroluminescent material, liquid crystal material and photoinitiator. The polymer-dispersed liquid crystal coating formed by the above composition can undergo stable and reversible color changes, and is manifested as reversible changes in light of different colors and transparency in appearance, so that the polymer-dispersed liquid crystal coating formed by the composition realizes a real sense of color change. Compared with dyes, inorganic electroluminescent materials have little effect on the curing speed and degree of curing of the binder polymer, and at the same time, under the irradiation of ultraviolet light, the liquid crystal microparticles formed by separating from the mixture of the binder polymer and liquid crystal The drop separation formability is good, and liquid crystal microdroplets with larger apertures can be formed, so that the polymer dispersed liquid crystal coating formed by the composition has the advantages of low driving voltage and high open-state transmittance.

Description

technical field [0001] The invention relates to the field of electroluminescent components, in particular to a composition for forming polymer-dispersed liquid crystals, a polymer-dispersed liquid crystal coating and a self-illuminating dimming film. Background technique [0002] Polymer dispersed liquid crystal (polymer dispersed liquid crystal, hereinafter replaced by PDLC) is to mix low-molecular liquid crystal with prepolymer, and undergo polymerization reaction under certain process conditions to form micron-scale liquid crystal particles uniformly dispersed in solid polymer matrix middle. The obtained liquid crystal particles have dielectric anisotropy. Under the condition of an external electric field, the polymer dispersed liquid crystal can realize the transition between transparent and opaque, so that the light transmittance of the film can be adjusted. [0003] The PDLC structure usually consists of upper and lower layers of transparent conductive films (or glass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D4/00C09D7/12C09K19/52G02F1/1333
Inventor 丁清华吴泓辉马文涛
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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