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One-step cover closing method of electronic paper micro-cup and cover closing material

A technology of electronic paper and conductive materials, applied in identification devices, nonlinear optics, instruments, etc., can solve the problems of difficult implementation, fragile microcup structure, inapplicability, etc., and achieve the effect of cheap equipment, simple and fast method

Inactive Publication Date: 2009-05-27
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] ① In order to prevent the microcup structure from being very fragile due to the mutual cross-linking and shrinkage of the internal materials of the microcup, Xianhai Chen from the US SiPix Imaging (image) company added rubber materials with a mass concentration of 8% to 15% in thermosetting plastics. (such as SBR, PBR, NBR, etc.) effectively improve the flexibility of the microcup array; but because the rubber material used will dissolve or swell in solvents such as tetrachloroethylene, it is not suitable for colorants containing tetrachloroethylene Capping of dispersion systems
[0013] ③Tetrachlorethylene is different from the above-mentioned fluorine-containing solvents. It is miscible with most unsaturated ester glues. In this miscible state, either no curing occurs, or the entire microcup is cured. Only the surface layer is cured; and because of the excellent solubility of tetrachlorethylene, it can dissolve fat, oil, rubber, natural resin, most synthetic resins and aromatic organic acids, even if it is cured by crosslinking or polymerization, it will not change after a long time. Will form the capping layer to gradually dissolve; due to the volatility and strong solubility of tetrachlorethylene, means such as heating, interfacial polymerization or humidity changes adopted by SiPix Imaging (image) company in the United States are used as electrophoretic medium for tetrachlorethylene in the microcup. It is difficult to implement the curing and capping of the pigment dispersion
[0014] ④ There are many researches related to electronic paper and electronic ink in China, but most of them follow the example of E-ink and other companies (020139592.6) to do research on microcapsules. Zhejiang University Wang Mang and Chen Hongzheng et al. Preliminary research on the fabrication of microcups using acrylate, but no reports on flexible substrates and microcup caps

Method used

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  • One-step cover closing method of electronic paper micro-cup and cover closing material
  • One-step cover closing method of electronic paper micro-cup and cover closing material
  • One-step cover closing method of electronic paper micro-cup and cover closing material

Examples

Experimental program
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Effect test

Embodiment 1

[0058] See Figure 1~5 .

[0059] In the capping glue: photoinitiator: 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, the concentration is 0.5wt%, 2-(4-(2-hydroxyl-2-methylpropane Oxy)phenoxy)acetic acid at a concentration of 0.5 wt%, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide at a concentration of 1 wt%, monomer: maleic anhydride modified Methacrylate at 8 wt%, Methacrylate Phosphate at 3 wt%, Polyethylene Glycol (600) Acrylate at 2 wt%, Ditrimethylol Propylene Tetraacrylate at 2 wt% %, oligomer: SB401 (aromatic acid methacrylic acid half ester) (Sartomer Company, U.S.), concentration is 5wt%, CN966 (amino ester / acrylic acid ester) (Sartomer Company, U.S.), concentration is 10wt%, Conductive material: 5 μm flake-shaped hollow aluminum powder, concentration is 50wt%, surfactant: CD9051 (acrylic acid ester containing three unsaturated carbon-carbon double bonds) (Sartomer, USA), concentration is 4wt%, BYK115 ( High-molecular-weight block copolymer solution with a molecu...

Embodiment 2

[0064] See Figure 1~5 .

[0065] In the capping glue: photoinitiator: 2-hydroxyl-1-(4-(2-hydroxyethoxy)phenyl)-2-methylpropyl-1-one, the concentration is 0.5wt%, 1- Hydroxycyclohexyl phenyl ketone, the concentration is 0.5wt%, monomer: polyethylene glycol (200) acrylate, the concentration is 5wt%, triglycerol triacrylate, the concentration is 3wt%, ethylene glycol bis Methacrylate, concentration is 2wt%, oligomer: EB2002 (water-soluble urethane acrylate, U.S. Cytec), concentration is 30wt%, CN2256 (water-soluble polyester acrylic acid, U.S. Sartomer Company), concentration is 10wt%, CN972 (aromatic amino ester acrylate) (Sartomer, U.S.), concentration is 10wt%, conductive material: 500nm flake silver-coated silica ball, concentration is 10wt%, polyaniline, concentration is 10wt% %, surfactant: silane coupling agent 570, concentration is 1wt%, BYK110 (Germany BYK chemical company), concentration is 2wt%, BYK154 (molecular weight is greater than the ammonium salt solution of ...

Embodiment 3

[0070] See Figure 1~5 .

[0071] In the capping glue solution: photoinitiator: benzoin dimethyl ether, the concentration is 1wt%, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, the concentration is 1wt%, monomer: acrylic acid modified Acrylate, concentration is 10wt%, isobornyl acrylate, concentration is 15wt%, ditrimethylol propylene tetraacrylate, concentration is 20wt%, oligomer: PE55WN (water-soluble polyester acrylate, Germany BASF company ), concentration is 25wt%, CN988 (Sartomer Company of the U.S.), concentration is 7wt%, surfactant: CD9051 (acrylic acid ester containing three unsaturated carbon-carbon double bonds in the molecule) (Sartomer Company of the United States), Concentration is 1wt%, BYK115 (Germany BYK chemical company), concentration is 2wt%, BYK181 (having the molecular weight of anionic / non-ionic character is greater than the solution of the alkanolammonium salt polymer of 10000 less than 3000000) (Germany BYK chemical company) , concentration is 5w...

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Abstract

The invention relates to an electronic paper micro-cup, in particular to a method for the one-step sealing of the electronic paper micro-cup on flexible basal material in solvent with strong dissolution or swelling such as tetrachlorethylene, and sealing material thereof. According to the invention, unsaturated acrylic ester derivatives are taken as main material to prepare sealing glue liquor together with oligomers, monomers, a photoinitiator, a modifier, a surfactant and conductive material. The sealing glue liquor is mixed with pigment dispersing liquor according to certain proportion and is used for completing the sealing through emulsification and dispersion, delamination, and photo solidification. The sealing thickness can be accurately controlled through the volumetric ratio of the sealing glue liquor and the pigment dispersing liquor. The invention can not only be suitable for sealing electronic ink or liquid crystal to realize flexible or rigid plate display, but also be used for the micro-flow control, cell or tissue culture, synthesis and preparation in the fields of biology, medicine and chemistry.

Description

technical field [0001] The invention relates to an electronic paper microcup displayed on a flat panel, in particular to a one-step capping method and a capping material for realizing the electronic paper microcup on a flexible base material in a strong dissolving or swelling solvent such as tetrachlorethylene. Background technique [0002] Electrophoretic display (EPD), commonly known as electronic paper, has many advantages compared with other flat panel displays, such as comfortable reading, high contrast, low bistable power consumption (display when power off), high resolution (>200dpi), light and thin ( Thickness 0.5 mm), wide substrate (flexible display), wide viewing angle (180 degrees); therefore, it has a wide range of application prospects, not only will bring revolutionary changes to information recording related industries, but also in e-books, e-libraries, There are broad and far-reaching application prospects in low-power sustainable displays, large outdoor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167G09F9/37
Inventor 唐芳琼王健孟宪伟杨永源
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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