Liquid crystal composition, polymer dispersion liquid crystals, display panel and preparation method
A liquid crystal composition and display panel technology, which are applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as inability to present color, and achieve the effects of simple preparation method, wide source and low cost
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Embodiment 1
[0046] This embodiment provides a liquid crystal composition, including a twisted grain boundary phase liquid crystal system, a polymerization system, and nanoparticles; the polymerization system includes a first polymerizable monomer and a second polymerizable monomer with different polymerization rates.
[0047] The liquid crystal composition of this embodiment includes a wide temperature twisted grain boundary phase liquid crystal system, at least two polymerizable monomers with different polymerization rates and nanoparticles; since the polymerization rates of different polymerizable monomers are different, the formed Polymer dispersed liquid crystals have a gradient distribution of polymer networks. When the liquid crystal composition is added into a liquid crystal cell and cured for display, under the condition of applied voltage, the liquid crystal droplets in the polymer with gradient distribution in the system will form a pitch gradient distribution, which can present ...
Embodiment 2
[0049] This embodiment provides a liquid crystal composition, including a twisted grain boundary phase liquid crystal system, a polymerization system, and nanoparticles; the polymerization system includes a first polymerizable monomer and a second polymerizable monomer with different polymerization rates.
[0050] That is to say, two monomers with different polymerization rates are selected so that the polymer network formed by the polymerization of the two monomers can be distributed in a gradient. Under certain conditions, it can present a color screen state or a transparent or opaque state.
[0051] Preferably, the polymerization system further includes an initiator.
[0052] That is to say, the initiator corresponding to the monomer is included in the polymerization system, for example, when the polymerizable monomer is ionic polymerized, the initiator for initiating the ionic polymerization should be added correspondingly, and when the polymerizable monomer undergoes radi...
Embodiment 3
[0067] This embodiment provides a polymer dispersed liquid crystal, such as figure 1 As shown, it is formed by the polymerization of the liquid crystal composition of Example 1. The liquid crystal composition includes a twisted grain boundary phase liquid crystal system 1, a polymerization system and nanoparticles 2; the polymerization system includes a first polymerizable monomer with different polymerization rates , the second polymerizable monomer. The first polymerizable monomer and the second polymerizable monomer form a polymer network 3, and due to the different polymerization rates of the first polymerizable monomer and the second polymerizable monomer, the two monomers are self-polymerized or copolymerized to form Gradient distributed polymer network 3; thereby obtaining polymer dispersed liquid crystals.
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