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.

Pending Publication Date: 2020-06-05
东莞市宝立创电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the deformation is restored, the spacer cannot return to its original position, resulting in no spacer in the position, so that the thickness and uniformity of the liquid crystal layer are affected; or for large-size liquid crystal tablet, most of them are hung on the wall On the above, due to the gravity of the liquid crystal itself, it will flow downward, causing the spacers to reunite, which will affect the thickness and uniformity of the liquid crystal layer, and eventually cause abnormal writing performance of the liquid crystal tablet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[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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Abstract

The invention relates to the technical field of liquid crystal handwriting boards, in particular to a liquid crystal handwriting diaphragm, a preparation method thereof, and a liquid crystal handwriting board. The liquid crystal handwriting diaphragm comprises a first substrate, a first conducting layer, a liquid crystal layer, a second conducting layer and a second substrate which are sequentially stacked; the liquid crystal layer comprises a polymer layer and a polymer + liquid crystal layer; the polymer layer includes a layer of polymer material and a spacer secured in the layer of polymermaterial. According to the invention, the liquid crystal layer is divided into the polymer layer and the polymer + liquid crystal layer with clear boundaries by adopting a step-by-step photocuring process, and the spacers are fixed in the polymer layer, so the problem of abnormal function of the handwriting board caused by non-uniform dispersion of the spacers in the handwriting diaphragm due to spacer movement of the spacers caused by writing, cold and hot shrinkage and the like is avoided.

Description

technical field [0001] The invention relates to the technical field of liquid crystal handwriting boards, in particular to a liquid crystal handwriting film, a preparation method thereof, and a liquid crystal handwriting board. Background technique [0002] At present, in the production and preparation process of the existing liquid crystal tablet, the cholesteric liquid crystal, the spacer and the prepolymer material are generally mixed evenly, and then sandwiched between two plastic substrates with conductive materials by coating. . Due to the thermal shrinkage of the plastic substrate, the upper and lower plastic substrates will cause the spacers to flow due to short-term deformation. However, after the deformation is restored, the spacer cannot return to its original position, resulting in no spacer in the position, so that the thickness and uniformity of the liquid crystal layer are affected; or for large-size liquid crystal tablet, most of them are hung on the wall O...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/1334G02F1/1339G02F1/1343C09K19/54
CPCC09K19/542G02F1/1333G02F1/1334G02F1/13392G02F1/1343
Inventor 夏亮吴飞袁玲玉沈隆军
Owner 东莞市宝立创电子科技有限公司
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