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Particles for electronic paper and manufacturing method thereof

A technology of electronic paper and particles, applied in chemical instruments and methods, preparation of microspheres, microcapsule preparations, etc., can solve problems such as unsatisfactory display stability

Inactive Publication Date: 2011-10-12
SK PLANET CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in-plane electrophoresis does not satisfy the display stability, so it is suggested to use microcapsule electrophoresis to solve the problem of in-plane electrophoresis

Method used

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  • Particles for electronic paper and manufacturing method thereof
  • Particles for electronic paper and manufacturing method thereof
  • Particles for electronic paper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0063] The electronic paper particle composition is dispersed using a solvent to obtain a sprayable composition. Here, the electronic paper particle composition includes a polymer resin, a charge control agent, and a pigment. A styrene-acrylate copolymer was used as a polymer resin, p-50 (a plasticizer having a positive charge) was added to the polymer resin at a content of 0.5%, and carbon black (black pigment) was used as a pigment.

[0064] The sprayable composition was sprayed through a two-fluid nozzle at a pressure of 3 MPa to produce droplets.

[0065] The droplets were dried by using air at 90° C. until the solvent content of the droplets became less than 1%, and electronic paper particles were obtained from the dried droplets.

Embodiment approach 2

[0067] A sprayable composition is obtained by dispersing the electronic paper particle composition using a solvent. Here, the electronic paper particle composition includes a polymer resin, a charge control agent, and a pigment. A polyester resin was used as a polymer resin, E-88 (Morflex 130) (a plasticizer having a negative charge sold by Orient Chemical in Japan) was added to the polymer resin at a content of 0.5%, and titanium dioxide (white pigment) was used as a pigment.

[0068] The sprayable composition was sprayed through a two-fluid nozzle at a pressure of 5 MPa to produce droplets.

[0069] The droplets were dried by using air at 80° C. until the solvent content of the droplets became less than 1%, and electronic paper particles were obtained from the dried droplets.

Embodiment approach 3

[0071] A sprayable composition is obtained by dispersing the electronic paper particle composition using a solvent. Here, the electronic paper particle composition includes a polymer resin, a charge control agent, and a pigment. Styrene-butadiene copolymer was used as the polymer resin, E-80 (Kesscoflex DBT) (plasticizer having a negative charge) was added to the polymer resin at a content of 0.5%, and titanium dioxide (white pigment) was used as the pigment .

[0072] The sprayable composition is sprayed through a two-fluid nozzle at 4 MPa to produce droplets.

[0073] The droplets were dried by using air at 100° C. until the solvent content of the droplets became less than 1%, and electronic paper particles were obtained from the dried droplets.

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Abstract

The present invention relates to particles for electronic paper and to a manufacturing method thereof. The method for manufacturing particles for electronic paper, comprises the steps of: dispersing electronic paper particle compositions containing a polymer resin, a charge controlling agent, and a pigment by using a solvent to obtain sprayable compositions; spraying the sprayable compositions at a predetermined pressure to generate a liquid droplet; drying the liquid droplet; and obtaining particles for electronic paper from the dried liquid droplet. The method of the present invention can manufacture particles for electronic paper without using a stabilizer or an emulsifier, thereby improving charge stability of particles for electronic paper, and providing better environmental stability against contamination.

Description

technical field [0001] The present invention relates to particles for electronic paper and a manufacturing method thereof, more specifically, to a method for manufacturing particles for electronic paper and particles for electronic paper obtained according to the manufacturing method, the manufacturing method comprising the following Steps: dispersing an electronic paper particle composition comprising a polymer resin, a charge control agent, and a pigment using a solvent to obtain a sprayable composition; spraying the sprayable composition at a predetermined pressure to generate liquid droplets; Droplets to obtain particles for electronic paper. Background technique [0002] Electronic paper provides a feeling of paper and is used as a tool for displaying digital information such as characters or images processed on an electronic device. Electronic paper is also known as e-paper, paper-like display, e-book and e-paper. [0003] E-paper is a flexible liquid crystal display...

Claims

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Application Information

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IPC IPC(8): G02F1/167
CPCB01J13/043C08J3/122C09C3/00G02F2001/1678G02F1/167
Inventor 尹尚帅全用夏韩上劝杨重根
Owner SK PLANET CO LTD
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