Liquid crystal handwriting diaphragm, preparation method thereof, and liquid crystal handwriting board
A liquid crystal handwriting and membrane technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as the influence of liquid crystal layer thickness and uniformity, abnormal writing performance of liquid crystal handwriting boards, etc.
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[0027] The preparation method of the liquid crystal layer comprises the following steps:
[0028] mixing liquid crystal slurry with spacers to obtain liquid crystal coating slurry;
[0029] Applying a liquid crystal slurry between the first conductive layer and the second conductive layer by extrusion coating, and performing photocuring to obtain the liquid crystal layer;
[0030] The photocuring is stepwise photocuring.
[0031] In the present invention, the liquid crystal handwriting film includes a first substrate and a second substrate; the material of the first substrate is preferably polycarbonate (PC) or polyethylene terephthalate (PET). In the present invention, the transmittance of the first substrate is preferably 20%-95%, more preferably 50%-95%, most preferably 80%-90%. In a specific embodiment of the present invention, the first substrate is specifically Mitsubishi Chemical polyester SM07-X12 or light gray AG-T03 with a transmittance of 70%. In the present inve...
Embodiment 1
[0049] Use Mitsubishi Chemical polyester SM07-X12 as the first substrate and the second substrate with a black base material model AG-LWB-B01 (thicknesses are 125 μm and 188 μm respectively);
[0050] Sputtering an ITO layer on the surfaces of the first substrate and the second substrate respectively, to obtain the first substrate with the first conductive layer and the second substrate with the second conductive layer respectively;
[0051] According to the mass ratio of 75:10:10:3:2, 750g cholesteric liquid crystal material (Yantai Xianhua, liquid crystal model is LC-6T486), 100g tetrahydrofuran acrylate, 100g isobornyl acrylate, 30g tris(2- Hydroxyethyl) isocyanurate triacrylate and 20g ethyl 2,4,6-trimethylbenzoylphenyl phosphonate, mixed under stirring (mixing temperature is 60°C, time is 12h) , to obtain liquid crystal paste;
[0052] According to the mass ratio of 500:4, 500g of liquid crystal slurry and 4g of spacers (5 μm, TN-500 microspheres of Zhenjiang Aitiao Comp...
Embodiment 2
[0055] Use Mitsubishi Chemical polyester SM07-X12 as the first substrate and the second substrate with a black base material model AG-LWB-B01 (thicknesses are 125 μm and 188 μm respectively);
[0056] Using dimple coating, apply Clevios PH 1000 (pedot: pss solution) respectively (coating speed: 20m / min) to the surface of the first substrate and the second substrate (the thickness of the obtained wet film is 15μm) , curing (140°C, 2min) to obtain the first substrate with the first conductive layer and the second substrate with the second conductive layer;
[0057] According to the mass ratio of 80:15:5:2:1.5, 800g cholesteric liquid crystal material (Hebei Milstone Electronic Material Co., Ltd., MS-N06), 150g isotridecylmethacrylate, 50g ethyl Oxidized 1,6-hexanediol diacrylate, 20 g DR-E522 acrylic medium molecular weight prepolymer (Taiwan Changxing Chemical Industry Co., Ltd.) and 15 g 2-methyl-2-(4-morpholinyl)-1- [4-(methylthio)phenyl]-1-propanone, mixed under stirring co...
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