A kind of electrical response dimming device and its preparation method
An electrical response and device technology, applied in instruments, optics, nonlinear optics, etc., can solve the problem of high threshold voltage of dimming glass, and achieve the effect of reducing the threshold voltage
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Embodiment 1
[0036] figure 1 It is a structural schematic diagram of an electrical response light adjustment device according to an embodiment of the present invention. Such as figure 1 As shown, it includes a first light-transmitting conductive substrate 21, a second light-transmitting conductive substrate 22 and a power supply assembly 1 which are arranged oppositely. sexual connection. The sealing plastic frame 4 between the first light-transmitting conductive substrate 21 and the second light-transmitting conductive substrate 22 seals between the two light-transmitting conductive substrates to form an adjustment area 3, and the adjustment area 3 is filled with a liquid crystal mixture.
[0037] The detailed preparation steps of the electro-responsive dimming device are as follows:
[0038] (1) Prepare two light-transmitting conductive substrates. The two light-transmitting conductive substrates are composed of glass and an ITO electrode coated on one of the surfaces of the glass. On...
Embodiment 2
[0054] Comparative experiments of monoester liquid crystal monomers with different contents
[0055] Dimming devices were prepared according to the following liquid crystal monomers with different ratios. The difference in each scheme is only the internal ratio of the liquid crystal monomers, and the contents of other components are the same as those in Example 1. The specific formula is shown in the table below, where the numerical values represent the percentage of each component in the total mass of the liquid crystal mixture. After the preparation is completed, parameters such as threshold voltage, saturation voltage, light transmittance, and response time of the dimming device are measured.
[0056] Table 1. Liquid crystal monomer ratio table
[0057]
[0058] Figure 5 It is a comparison diagram of the threshold voltage and saturation voltage of the dimming device in the comparative experiment of another embodiment of the present invention, the upper part is the s...
Embodiment 3
[0062] A dimming device, the difference from Example 1 is that the specific formula and ratio of the liquid crystal mixture are:
[0063] 95.8wt% negative liquid crystal, choose HNG30400-200 produced by Jiangsu Hecheng Display Technology Co., Ltd.;
[0064] 1.9wt% monoacrylate liquid crystal monomer, choose HCM-020 produced by Jiangsu Hecheng Display Technology Co., Ltd., and its structural formula is as follows:
[0065] 2wt% diacrylate liquid crystal monomer, choose HCM-009 produced by Jiangsu Hecheng Display Technology Co., Ltd., and its structural formula is as follows:
[0066]
[0067] 0.3wt% photoinitiator, select Irgacure-651 (CAS: 24650-42-8), its structural formula is as follows:
[0068] HCM-020 in this example also has only one double bond that can be opened, and polymerization reaction occurs between HCM-009 and HCM-009 under ultraviolet light irradiation, but cannot be cross-linked, and thus cannot form a continuous network. HCM-020, which cannot be cros...
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