Electronic ink, electronic paper and method for preparing electronic ink

A technology of electronic ink and electrophoresis, applied in nonlinear optics, instruments, optics, etc., can solve the problems of slow speed, poor image definition of display devices, and slow response speed of display devices, so as to improve response speed and image clarity Degree, the effect of purifying air quality

Active Publication Date: 2014-04-30
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing electronic paper made of electronic ink, due to the large particle size of the display particles forming the electronic ink, usually above 100nm, this makes the charged particles dispersed in the electrophoretic base liquid under the action of the electric field The directional movement of the display particles under the action of Coulomb force is slow, which not only affects the slow response speed of the display device, but also further leads to poor image clarity of the display device.

Method used

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  • Electronic ink, electronic paper and method for preparing electronic ink
  • Electronic ink, electronic paper and method for preparing electronic ink

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preparation example Construction

[0068] The embodiment of the present invention provides a preparation method of electronic ink. The various components in the white pigment used in the preparation method and the selected organic solvent come from a wide range of sources, and the process is simple and easy to operate. Since the display particles in the electronic ink are inorganic mixtures with a particle size between 20-50nm, the particle size of the display particles is small enough and the quality of the display particles thus formed is uniform. The charge shows that the particles are capable of uniform and rapid directional migration. The display device prepared by the method not only improves the response speed, but also further improves the image definition thereof. In addition, because the method can also generate high-concentration negative ions during the implementation process, it also has the function of purifying the air quality in the production workshop.

[0069] It should be noted here that, in...

Embodiment 1

[0081] Electronic Ink 1

[0082] First, weigh 9 parts of zinc oxide, 0.03 parts of boron oxide, 0.12 parts of lithium oxide and 0.15 parts of zirconia, add a small amount of Solsperse3250 to disperse, and then add 40.05 parts of bromobenzene for continuous stirring, and then place it on a three-roll machine Continue to disperse to obtain a dispersion; then add 0.12 parts of a fluorocarbon surfactant, 1.5 parts of a toluenesulfonate surfactant and 43.03 parts of bromobenzene to the dispersion to continuously stir to obtain an electrophoretic liquid; finally, add 6 parts of the microcapsule prepolymer were mixed with the electrophoretic solution and stirred continuously for 1 hour at 40° C. to obtain electronic ink 1 .

Embodiment 2

[0084] E Ink 2

[0085] First, weigh 9 parts of zinc sulfide, 0.03 parts of boron oxide, 0.22 parts of lithium oxide and 0.15 parts of zirconia, add a small amount of Solsperse3250 to disperse, and then add 39.78 parts of bromobenzene for constant stirring, and then place it on a three-roll machine Continue to disperse to obtain a dispersion; then add 0.12 parts of a fluorocarbon surfactant, 2 parts of a toluenesulfonate surfactant and 42.7 parts of bromobenzene to the dispersion to continuously stir to obtain an electrophoretic liquid; finally, add 6 parts of the microcapsule prepolymer were mixed with the electrophoretic liquid, and stirred continuously for 1 hour under the condition of 42° C. to obtain electronic ink 2 .

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Abstract

The invention provides electronic ink, electronic paper and a method for preparing the electronic ink, belongs to the field of displaying and aims to improve image definition of display devices. The electronic ink comprises display particles, electrophoresis base solution and microcapsule prepolymer, wherein the display particles are inorganic mixtures of white pigments, the particle size of the display particles is 20-50nm, and at least one of zinc oxide, zinc sulfide and lithopone is mixed with boric oxide, lithium oxide and zirconium oxide to form the inorganic mixtures of the white pigments. The electronic ink can be applied to producing the electronic paper.

Description

technical field [0001] The invention relates to the display field, in particular to an electronic ink, electronic paper and a preparation method of the electronic ink. Background technique [0002] With the development of computer technology and the popularization of the Internet, electronic paper can avoid visual fatigue when reading because its display effect is close to that of natural paper, so it has received more and more attention as a new generation of display devices. [0003] Electronic paper is a display panel made of electrophoretic electronic ink, wherein electronic ink is a key material of electronic paper. Electronic ink is usually composed of display particles, electrophoretic base liquid and capsule wall material, and the display particles and electrophoretic base liquid are wrapped in the capsule wall by the capsule wall material to avoid agglomeration and deposition of display particles, thereby improving the stability of electronic ink. [0004] In the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167
CPCG02F2001/1678G02F1/167
Inventor 杨久霞白峰赵一鸣
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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