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Polymer and liquid crystal composition, liquid crystal handwriting display device and preparation methods of polymer and liquid crystal composition and liquid crystal handwriting display device

A liquid crystal composition and liquid crystal handwriting technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of easy cracking and damage of handwriting devices, low display contrast, weak adhesion, etc., and achieve sensitive writing and display High-contrast, easy-to-handle effects

Active Publication Date: 2015-11-18
青岛诚志光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that in the prior art, the bistable cholesteric liquid crystal handwriting display device shows low contrast, high driving voltage, weak cohesion between the liquid crystal and the polymer and the upper and lower films, The handwriting device is easy to crack and damage, so a polymer liquid crystal composition for handwriting liquid crystal display device and its preparation method are proposed

Method used

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  • Polymer and liquid crystal composition, liquid crystal handwriting display device and preparation methods of polymer and liquid crystal composition and liquid crystal handwriting display device
  • Polymer and liquid crystal composition, liquid crystal handwriting display device and preparation methods of polymer and liquid crystal composition and liquid crystal handwriting display device
  • Polymer and liquid crystal composition, liquid crystal handwriting display device and preparation methods of polymer and liquid crystal composition and liquid crystal handwriting display device

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Embodiment 1

[0040] This embodiment provides a polymer liquid crystal composition, which includes a mass ratio of 15%:85% miscible polymer and cholesteric liquid crystal, wherein the polymer includes the following components in parts by weight:

[0041] Oligomer monomer: 30 parts of lauric acid acrylate, its molecular formula is:

[0042]

[0043] Photoinitiator: 0.5 parts of 2,4,6,-trimethylbenzoyl-diphenylphosphine oxide, its molecular formula is:

[0044]

[0045] Oligomers: 30 parts of oligomers purchased from Taiwan Changxing Chemical Co., Ltd. are 6127 oligomers, and the hardness after curing is 90A;

[0046] Diluent: 5 parts of ethoxyethoxyethyl acrylate with a viscosity of 150CPS, and its molecular formula is:

[0047]

[0048] Adhesion enhancer: 0.1 part of 2-hydroxyethyl methacrylate phosphate, and the molecular formula of 2-hydroxyethyl methacrylate phosphate is:

[0049]

[0050] This embodiment also provides a preparation method of the polymer liquid crystal comp...

Embodiment 2

[0061] This embodiment provides a polymer liquid crystal composition, which includes a mass ratio of 60%: 40% miscible polymer and cholesteric liquid crystal, wherein the polymer includes the following components in parts by weight:

[0062] Oligomer monomer: 30 parts of 2-(p-cumyl-phenoxy)-ethyl acrylate, 40 parts of tetrahydrofurfuryl acrylate, wherein, the 2-(p-cumyl -phenoxy)-ethyl acrylate molecular formula is:

[0063]

[0064] Described tetrahydrofurfuryl acrylate molecular formula is:

[0065]

[0066] Photoinitiator: 3 parts of 1-hydroxy-cyclohexyl-phenyl ketone, its molecular formula is:

[0067]

[0068] Oligomers: 20 parts of oligomers purchased from Taiwan Changxing Chemical Co., Ltd. are 20 parts of 6070, and the hardness after curing is 87A. The model is 20 parts of oligomers of DR-028FS. 30 parts of oligomers of 6113, the hardness after curing is 40A;

[0069] Diluent: 50 parts of 2-phenoxyethyl acrylate with a viscosity of 180CPS, its molecular for...

Embodiment 3

[0084] This embodiment provides a polymer liquid crystal composition, which includes a mass ratio of 40%: 60% miscible polymer and cholesteric liquid crystal, wherein the polymer includes the following components in parts by weight:

[0085] Oligomer monomer: 20 parts of stearic acid acrylate, 30 parts of isobornyl methacrylate, wherein, the molecular formula of said stearic acid acrylate is:

[0086]

[0087] The molecular formula of described isobornyl methacrylate is:

[0088]

[0089] Photoinitiator: 1.5 parts of 2-hydroxy-2-methyl-1-phenyl-1-propanone, its molecular formula is:

[0090]

[0091] Oligomers: 20 parts of oligomers purchased from Taiwan Changxing Chemical Co., Ltd. are 20 parts of DR-U390, whose hardness after curing is 70A, and 10 parts of oligomers whose model is 6148, whose hardness after curing is 21A, and the model is 20 parts of oligomers of 6176, the hardness after curing is 21A;

[0092] Thinner: 20 parts of ethoxyethoxyethyl acrylate with ...

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Abstract

The invention discloses polymer and liquid crystal composition and liquid crystal handwriting display device using the same. The polymer and liquid crystal composition comprises a polymer and a liquid crystal which are mutually soluble, wherein the polymer comprises 30-70 parts of an oligomer monomer, 0.5-3 parts of a photoinitiator, 30-70 parts of an oligomer, 0.1-1 part of an adhesion promoter and 5-50 parts of a diluent. The invention further discloses a preparation method of the liquid crystal handwriting display device. The liquid crystal handwriting display device adopting the polymer and the bi-stable cholesteric liquid crystal has high display contrast, low driving voltage and sensitivity in handwriting, furthermore, electricity is not consumed in a handwriting displaying process and is only consumed at a refresh moment, handwriting refresh can be performed for millions of times, and the handwriting display device is environment-friendly.

Description

technical field [0001] The invention belongs to the field of liquid crystal display, and in particular relates to a polymer liquid crystal composition for a liquid crystal handwriting display device and a preparation method of the handwriting display device. Background technique [0002] Liquid crystal is a state of matter between solid and liquid. It has the fluidity of liquid and the order of crystal to a certain extent. According to the arrangement of molecules, it can be divided into nematic type, smectic type, There are three types of cholesteric liquid crystals, among which cholesteric liquid crystals are flat and arranged in layers. The molecules in the layers are parallel to each other, and the long axis of the molecules is parallel to the layer plane. The direction of the long axis of the molecules in different layers changes slightly, along the normal of the layer. The directions are arranged in a helical structure. The thread pitch of cholesteric liquid crystal i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/52G02F1/1333G02F1/1334G06F3/041
CPCC09K19/52G02F1/1333G02F1/1334G06F3/041
Inventor 何应军
Owner 青岛诚志光电科技有限公司
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