Electronic ink, electronic paper and display method of electronic paper

An electronic ink and electrophoretic display technology, applied in the field of electronic paper, can solve the problems of reducing the first resistance and increasing the second resistance, etc., to reduce resistance, solve the problem of poor ability to maintain static images, and fast dynamic image switching Effect

Inactive Publication Date: 2012-09-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the existing electrophoretic fluid cannot reduce the first resistance and increase the second resistance

Method used

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  • Electronic ink, electronic paper and display method of electronic paper
  • Electronic ink, electronic paper and display method of electronic paper
  • Electronic ink, electronic paper and display method of electronic paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1 Preparation method of negative electrorheological fluid-polyamic acid salt / silicone oil system

[0058] 1. Synthesis of polyamic acid

[0059] Add 0.01mol each of pyromellitic dianhydride and ether diamine to a three-necked flask, add N, N-dimethylformamide to form a solution with a mass concentration of reactants of 15%, stir in an ice-water bath for about 10 hours, and then After stirring at room temperature for about 12 hours, a bright yellow transparent polyamic acid was obtained.

[0060] The polyamic acid that polymerizes is obtained with the Ca(OH) of 1L 0.02mol / L 2 The solution is processed to precipitate out of the solution to obtain polyamic acid calcium salt.

[0061] The mass fractions of several main elements in polyamic acid particles obtained by photoelectron spectroscopy analysis are: ω(C) is 66%; ω(O) is 25.7%; ω(N) is 8.3%. The average diameter of the particles was 6.71 μm.

[0062] figure 2 It is the infrared spectrogram of polyamic ac...

Embodiment 2

[0066] Example 2 Preparation method of negative electrorheological fluid-polyamic acid salt / silicone oil system

[0067] 1. Synthesis of polyamic acid

[0068] Add 0.003mol 4,4'-diaminodiphenylmethane monomer (MDA) to a dry four-neck flask equipped with a magnetic stirrer, a thermometer, and a nitrogen inlet tube, and then add the solvent dimethylformamide (DMF), fully After dissolving, slowly add a DMF solution containing 0.001mol 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA) and 0.002mol pyromellitic dianhydride (PMDA) dropwise with a syringe, drop within 1h Finished adding. During the reaction, N was continuously passed 2 , keep the reaction at 30°C, and keep the temperature constant. After 24 hours of reaction, pour the mixed solution into deionized water to precipitate the polymer, filter it with suction, wash it with deionized water first, then wash it with methanol several times, and put the obtained solid in Dry at room temperature in a vacuum drying oven...

Embodiment 3

[0074] Embodiment 3 electronic ink

[0075] The electronic ink of the present invention is made of a plurality of electronic ink microcapsules, and the electronic ink microcapsules contain a negative electrorheological fluid polyamic acid salt / silicone oil system as an electrophoretic display liquid; wherein, the polyamic acid salt accounts for a negative current The mass volume percentage of the changing solution is 50%.

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Abstract

The invention discloses an electronic ink. The electronic ink comprises an electrophoretic disclosing solution, wherein the electrophoretic disclosing solution is electrorheological fluid which essentially consists of basal fluid, solid particles and an additive, wherein the volume percent of the solid particles in the mass of the electrorheological fluid is 5%-50%, and negative electrorheological fluid is preferably selected as the electrophoretic disclosing solution. The invention also discloses electronic paper containing the electronic ink. The invention further discloses a display method of the electronic paper. The viscosity of the electrophoretic disclosing solution is changed by changing the strength of an electric field applied to the electrophoretic disclosing solution, so that the viscosity of the electrophoretic disclosing solution can be reduced when dynamic images are switched and increased when static images are maintained so as to realize faster dynamic image switching and better static image maintaining with the electronic ink.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to electronic ink, electronic paper containing the electronic ink, and a display method for the electronic paper. Background technique [0002] Display technology has profoundly affected people's production and life, and the emergence of electronic paper will undoubtedly cause a revolution in the display field. [0003] A very remarkable advantage of e-paper is image retention. That is, the final image can be maintained for a long time without power supply. Only when the displayed image needs to be changed, the electric field is applied through the electrodes, which can achieve great energy saving. [0004] E-ink is critical to the performance impact of e-paper. Electronic ink includes electronic ink microcapsules, microcups and rotating balls. Taking electronic ink microcapsules as an example, many small "microcapsules" are attached to the surface of the electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167G09G3/34C10M169/04C10N40/14
CPCC09B69/109G02F1/1681G02F1/167
Inventor 田肖雄舒适薛建设赵吉生李琳
Owner BOE TECH GRP CO LTD
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