CN1979319A - Method for preparing black-white electrophoresis display liquid used for electronic ink - Google Patents
Method for preparing black-white electrophoresis display liquid used for electronic ink Download PDFInfo
- Publication number
- CN1979319A CN1979319A CN 200510126160 CN200510126160A CN1979319A CN 1979319 A CN1979319 A CN 1979319A CN 200510126160 CN200510126160 CN 200510126160 CN 200510126160 A CN200510126160 A CN 200510126160A CN 1979319 A CN1979319 A CN 1979319A
- Authority
- CN
- China
- Prior art keywords
- electrophoresis
- black
- electrophoretic particles
- white
- particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention is a method for preparing black and white electrophoretic display liquid for electronic ink. And the adopted electrophoretic particles are composed of white and black electrophoretic particles, where the white electrophoretic particles are inorganic or organic modified TiO2 particles and the black electrophoretic particles are charcoal black nano particles, and the mass ratio of black to white electrophoretic particles is 1:15-1:30; the dispersant adopts polymer dispersant and 10%-40% of the electroporetic particles in quantity; the quantity of the electrophoretic particles is 0.2%-5% of the mass of tetrachloro ethylene; and the obtained electrophoretic display liquid is black and white double-display electrophoretic display liquid. And the electrophoretic display liquid has better dispersivity and electric charge, able to be used to prepare electronic ink microcapsules.
Description
Technical field
The present invention relates to a kind of preparation method who is used for the electrophoresis disclosing solution of electric ink, being particularly related to modifying titanium dioxide and nano carbon black is electrophoresis particle, zellon is a dispersion medium, the two apparent electrophoresis disclosing solutions of the black and white that is formed by electrophoresis particle, dispersion medium and spreading agent.
Background technology
Display technique mainly contains: modern cathode-ray tube display, liquid crystal display, thin-film electroluminescence (TFEL) flat pannel display and electrophoresis showed etc.Electrophoresis showed is proposed by Japanese Ota at the seventies, utilizes coloured charged particle to move under electric field and develops the color.The principle of work of electrophoretic display technology is to utilize the principle of electrophoresis, is clipped in two interelectrode charge specieses and moves under effect of electric field, makes two kinds of different colors of charge species Alternation Display of motion.This can form the single-particle electrophoresis disclosing solution by a kind of electrophoresis particle and dyestuff.
Electrophoresis disclosing solution is to be made of electrophoresis particle, dispersion medium and spreading agent, and therefore selecting suitable electrophoresis particle, dispersion medium and spreading agent is the key issue of preparation electrophoresis disclosing solution.And the density that corresponding dispersion medium also will meet transparent and stable and be complementary with electrophoresis particle, as zellon.Electrophoresis particle, dispersion medium and spreading agent are uniformly mixed into stable electrophoresis disclosing solution, can be directly used in the preparation electron ink microcapsule.If be encapsulated in the microcapsules after electrophoresis disclosing solution emulsification is dispersed into thin dripping, can prevent the gathering of particulate effectively, improve picture quality, serviceable life and the reflectivity of electrophoretic display device (EPD).Because being placed in the discontinuous one by one microcapsules tiny particulate, electrophoresis disclosing solution kept apart by microcapsule wall, collision and interaction force between the particulate have been significantly reduced, stop the large-area deposition of particulate effectively, but also can satisfy the needs of typographical display equipment simultaneously.
The electro-rheological technology research institute of Northwestern Polytechnical University has researched and developed the electric ink of different colours.People such as Zhao Xiaopeng are at " white electrophoresis disclosing solution " (Chinese patent publication number: 1492275A) disclose the preparation method of organically-modified titania, adopt with the reprecipitation method and wrap up methyl methacrylate and urea-formaldehyde resin at particle surface at titanium dioxide surface parcel tygon and polyvinyl alcohol (PVA) or with emulsion polymerization, this organically-modified titania has good dispersiveness in organic media, can be used as electrophoresis particle.People such as Wang Yuntao are at " preparation of electrophoretic ink using urea-formaldehyde oligomer " [" functional material " (2004,35 (1): 105-108)] reported that the nano titanium oxide selected for use with methyl methacrylate and methacrylic acid copolymer parcel is as electrophoretic particles, the zellon that disperses blue dyes is as dispersion medium, and Span-80 is that spreading agent makes electrophoresis disclosing solution.Electrophoresis disclosing solution is dispersed in the water-soluble low molecular weight ureaformaldehyde condensed polymer, stirs and form emulsion.Add thermal-initiated polymerization then, reaction finish rear electrophoresis show liquid just by dispersed encapsulated in Lauxite, prepared the urea-formaldehyde resin base electric ink of transparent densification thus.Use parallel-plate electrode that electronic ink material is carried out preliminary electric field response experiment, can show moving of particle.The related electrophoresis disclosing solution of above-mentioned patent and article is all by a kind of dispersion medium of develop the color particle and disperse dyes and the single-particle color development system that spreading agent is formed.Because the dispersion medium of disperse dyes is transparent, and certain light transmission is arranged, its parcel is prepared into when being applied to electrophoresis showed behind the microcapsules (particle diameter is 50～150 μ m), exist the lower problem of contrast.We are learnt by experiment, if with in the electrophoresis disclosing solution of method for preparing, even if adding carbon black particle, can not form stable two apparent electrophoresis disclosing solution, observe this electrophoresis disclosing solution, obvious layering just occurs less than 12h, the upper strata is a clear liquid, particle precipitation can not be used to prepare electron ink microcapsule as electrophoresis disclosing solution in the bottom.
TiO
2Contrast is about 2.7, and higher refractive index and better chemical stability are arranged, and is suitable as white electrophoretic particles.Because TiO
2Hydroxyl is contained on the surface, and fabulous water wettability is arranged, and can not well be dispersed in the organic media, therefore has only the TiO through modification
2Just can be used for electrophoresis showed.TiO
2Modification be divided into organically-modified and inorganic modified two kinds.
Inorganic coating is inorganic modified a kind of, and its principle is at TiO
2Add inorganic salts in the slurries, make TiO
2The oxide or the hydroxide film of particle surface plated metal ion.Inorganic coating method commonly used mainly contains alclad modification, bag silicon modification and sial modification etc." nano-TiO
2Alumina surface modification and sign " (Arms Material scientific and engineering, 2004,27 (3): 46-49) describe TiO in detail
2Surface inorganic coating process, its method of operating: getting 400ml concentration is 65g/l Na Neimi titania slurry, regulates pH value to 10 with 10%NaOH, it is moved in 80～90 ℃ of tanks, under stirring fast, add the 1.3ml sodium hexametaphosphate as the system spreading agent, fully stirring keeps 1h.Adopt the mode that slowly drips in one hour, the 13ml sodium metaaluminate to be joined in the system then, use 1%H simultaneously
2SO
4Regulate the pH value, make reaction remain on pH and finish in 8～9 environment, regulate pH to 7.2 at last, behind the ageing 120min, carry out vacuum filtration, and repeatedly washing, filter cake is dried 24h down at 105 ℃, fully grind, can obtain the titania that particle diameter is the alclad modification of the 57nm left and right sides.This alclad modification is in order to improve the photocatalysis of titania, improves its dispersed and stable in organic solvent, thereby improves the weatherability of pigment, gives full play to good optical property.
Physisorphtion is TiO
2Organically-modified method commonly used is by organic modifiers and TiO
2Molecule is in conjunction with improving TiO
2Compatibility with organic media.Organically-modified agent molecule generally is made up of nonpolar group two parts of hydrophilic polar group and oleophylic, as it and TiO
2During the particle contact, its polar group is attracted to particle surface, and the nonpolar group demonstration is affine with other organic medias outside, thereby surface tension is reduced, and the organic phase molecule is penetrated in the aggregated particle, and particle is separated from each other the effect that reaches dispersion.
Be used for the common dispersants that pigment particles disperses at organic media and be divided into traditional spreading agent and hyper-dispersant two classes.The tradition spreading agent adopts an end oleophylic, the hydrophilic structure of an end.Germany Degussa company produces pigment dispersing agent, as Dispers 650, Dispers 710, Dispers 655, UV681 etc.Hyper-dispersant is the multi-functional wetting dispersing agent of a class specific polymers type.The CH series auxiliary agent of ShangHai SanZheng polymer Materials Co., Ltd research and development can effectively solve the surface treatment and the scattering problem of ceramic powder, mineral filler, functional stuffing, magnetic slurry, electric slurry, lubricant, super-fine metal powder and other extraordinary powder, but does not see with UV681 or CH-6 type hyper-dispersant TiO
2Modification is used for the report of electrophoresis particle.
Summary of the invention
The purpose of this invention is to provide the two electrophoresis showed liquid and preparation method thereofs that show of a kind of black and white, use the two black-white electrophoresis display liquids that show of modifying titanium dioxide and carbon black particle preparation, this electrophoresis disclosing solution has dispersiveness and charging property preferably, can be used to prepare electron ink microcapsule.
The preparation method of prior art for preparing electrophoresis disclosing solution is that electrophoresis particle, dispersion medium zellon and spreading agent are equipped with electrophoresis disclosing solution through mixing, ultrasonic decentralized system.Technical characterictic of the present invention is:
(1) electrophoresis particle is made of white electrophoretic particles and black electrophoretic particles, white electrophoresis
Particle is inorganic modified titanium dioxide granule or organically-modified titanium dioxide granule, black
The swimming particle is the carbon black nano particle; The mass ratio of black electrophoretic particles and white electrophoretic particles
It is 1: 15～1: 30;
(2) spreading agent polymer dispersant, dispersant dosage are the electrophoresis particle consumption
10％～40％；
(3) the electrophoresis particle consumption is 0.2%～5% of a zellon quality;
(4) electrophoresis disclosing solution that obtains is the two apparent electrophoresis disclosing solutions of black and white.
The particle diameter of the white electrophoretic particles that the present invention adopts is at 100～200nm.
The particle diameter of the black electrophoretic particles that the present invention adopts is at 30～70nm.
Method of the present invention is mixed spreading agent earlier with zellon, and then adds black electrophoretic particles and the ultrasonic dispersion of white electrophoretic particles 20min, obtains electrophoresis disclosing solution.
The organically-modified titanium dioxide granule that the present invention adopts is the organically-modified titania of following method preparation: with particle diameter is that the titania of 100～200nm is added to and is mixed with suspending liquid in the aqueous solution, and to regulate pH with concentration 1%HCl be 4～12, through ultrasonic pre-dispersed; And then add the organic modifiers neopelex, and the mass ratio of organic modifiers and titania is 1: 4～1: 20, through ultrasonic dispersion, drying, screening, can obtain particle diameter is the organically-modified TiO 2 particles of 100～200nm.
The inorganic modified titanium dioxide granule that the present invention adopts is the alclad modifying titanium dioxide.
The polymer dispersant that the present invention adopts is polyester dispersants or CH-6 hyper-dispersant.
Electrophoresis disclosing solution of the present invention is put into the sedimentation bottle, place the 24h observation and show that liquid still keeps stable.Electrophoresis disclosing solution is put into the electrophoresis showed box, adds positive voltage switches to equality strength after the several seconds reverse voltage, and electrophoresis disclosing solution has significantly black and white change color.
In order to make titanium dioxide granule can be used for the two apparent electrophoresis disclosing solutions of black and white, need carry out surface modification to titanium dioxide granule.Organic modifiers commonly used has anionic surfactant, anionic surfactant, non-ionics and high molecular type surfactant.We pass through experiment and learn, are not to show all modifier to TiO
2The surface modification of particle can both be used for the two apparent electrophoresis disclosing solutions of black and white.The present invention adopts known alclad modifying titanium dioxide or organically-modified titanium dioxide granule of the present invention.For used modifier of organically-modified titanium dioxide granule and consumption is the surface modifier that is suitable for that preferably comes out from numerous modifier.
Inorganic modified titanium dioxide granule of the present invention is the titania of alclad modification, adopts known liquid phase deposition preparation, and operation steps is as follows: with TiO
2With water mixed preparing suspending liquid, regulate pH value to 10 with NaOH, it is moved in 80～90 ℃ of tanks, under stirring fast, the adding sodium hexametaphosphate fully stirs and keeps 1h.Adopt the mode that slowly drips in 1h, sodium metaaluminate to be joined in the system then, use H simultaneously
2SO
4Regulate the pH value, make reaction remain on pH and finish in 8～9 environment, regulate pH to 7.2 at last, ageing, suction filtration, dry back fully grinding can obtain the TiO that particle diameter is the modification of 100～200nm alclad
2Modification TiO
2Dispersiveness and charging property characterize by static sedimentation and electrophoretic characteristic instrument: with modification TiO
2Be mixed in the 30ml zellon, ultrasonic dispersion 20min leaves standstill observation in the sedimentation bottle, obtain alclad modification TiO
2The complete settling time in zellon.With modification TiO
2Being mixed in 10ml contains in the zellon of oil red, ultrasonic dispersion 20 min, get the 0.5ml dispersion liquid and put into the electrophoresis showed box, add positive voltage switches to equality strength after the several seconds reverse voltage, dispersion liquid has more tangible red white colour to change generation, electrophoresis apparatus receives the change color in the display box, obtains alclad modification TiO
2Response time in zellon.
The organically-modified TiO that the present invention adopts
2, adopt the physisorphtion preparation.Organically-modified TiO
2Dispersiveness and charging property characterize by static sedimentation and electrophoretic characteristic instrument: with organically-modified TiO
2Be scattered in the 30mL zellon, ultrasonic dispersion 20min pours in the sedimentation bottle and leaves standstill observation, obtains organically-modified TiO after 200 hours
2Rate of descent in zellon.With modification TiO
2Be scattered in the zellon that 10ml contains oil red, ultrasonic dispersion 20 min, get the 0.5ml dispersion liquid and put into the electrophoresis showed box, add positive voltage switches to equality strength after the several seconds reverse voltage, dispersion liquid has more tangible red white colour to change generation, electrophoresis apparatus receives the change color in the display box, obtains organically-modified TiO
2Response time in zellon.
TiO
2Be suitable as white electrophoretic particles; Carbon black particle has high-absorbility, can form obvious contrast with white particles and density lower, can be used as black particles.
The mass ratio of black electrophoretic particles of the present invention and white electrophoretic particles is 1: 15～1: 30, if the black electrophoretic particles ratio is excessive, electrophoresis disclosing solution is grey black, and change color is not obvious; If the black electrophoretic particles ratio is too small, the white electrophoretic particles ratio is excessive, and black electrophoretic particles is difficult to hide fully white electrophoretic particles, and the contrast that forms electrophoresis disclosing solution is very low.
Electrophoresis particle quality of the present invention is 0.2%～5% of a solution quality, if less than 0.2% of solution quality, then the electrophoresis disclosing solution shape that is translucent does not reach sufficient contrast; If the electrophoresis particle quality is greater than 5% of solution quality, and then electrophoresis disclosing solution concentration is too high, and electrophoresis particle is arranged too tight, behind the bag microcapsules, influences contrast.
The UV681 type pigment dispersing agent that the present invention produces with German Degussa company, it can improve the dispersion stabilization of titania in organic media.The molecular structure of the hyper-dispersant that the present invention adopts can be divided into two parts, and a part is an anchoring group, its mainly act on be with the hyper-dispersant adsorbed close in titanium dioxide surface, prevent the hyper-dispersant desorption; Another part is a solvent chain, and it mainly acts on is to form certain thickness protective seam at titanium dioxide surface.The maximum characteristics of hyper-dispersant have been to weaken the interaction between the titanium dioxide granule in the dispersion medium, have increased wetting lubricant nature and the dispersion stabilization of titania in medium.CH-6 type hyper-dispersant can effectively improve the dispersion stabilization of titania in organic media.
The consumption of spreading agent of the present invention is 10%～40% of an electrophoresis particle quality, if dispersant dosage was less than 10% o'clock of the electrophoresis particle quality, spreading agent contacts insufficient with the electrophoresis particle surface, electrophoresis particle can not well be scattered in the zellon, and electrophoresis disclosing solution does not reach stable performance requirement; If the consumption of spreading agent is excessive, then make too thickness of electrophoresis disclosing solution, electrophoresis particle is easy to cohesion and is difficult for being caused the electrophoresis disclosing solution performance to descend by electric field driven.
The electrophoresis disclosing solution of the present invention's preparation is put into the sedimentation bottle, places 24h and still keeps stable.Electrophoresis disclosing solution is put into the electrophoresis showed box, adds positive voltage switches to equality strength after the several seconds reverse voltage, shows that liquid has significantly black and white change color generation.The electrophoresis disclosing solution of the present invention's preparation can be used to prepare electron ink microcapsule.
Embodiment
Adopting commercially available particle diameter is that titania, the particle diameter of 100～200nm is the carbon black of 30～70nm; Spreading agent is the polyester dispersants that contains amino functional group (681UV that German Degussa company produces) or CH hyper-dispersant (the CH-6 type hyper-dispersant that ShangHai SanZheng polymer Materials Co., Ltd produces).
Embodiment 1 is the preparation of inorganic modified titania; Embodiment 2～embodiment 4 is preparations of organically-modified titania; Embodiment 5～embodiment 16 is preparations of electrophoresis disclosing solution, and its process conditions are listed in the table 1.Layering does not all appear in the electrophoresis disclosing solution of embodiment 5～embodiment 16 preparations during 24h; In the electrophoresis showed box of added electric field, dispersion liquid has significantly black and white change color generation.
Embodiment 1
With 13g TiO
2Be mixed in the 200ml water, the NaOH with 10% regulates pH value to 10, and it is moved in 80～90 ℃ of tanks, and under stirring fast, adding 0.65ml sodium hexametaphosphate fully stirs and keeps 1h.Adopting the mode that slowly drips in 1h the 6.5ml sodium metaaluminate to be joined in the system then, is 1%H with concentration simultaneously
2SO
4Regulate the pH value, make reaction remain on pH and finish in 8～9 environment, regulate pH to 7.2 at last, ageing 3h is through obtaining the TiO that particle diameter is the modification of 100～200nm alclad after suction filtration, drying, the grinding
2Alclad modification TiO
2Dispersiveness and charging property characterize by static sedimentation and electrophoretic characteristic instrument: with 500mg alclad modification TiO
2Be mixed in the 30ml zellon, ultrasonic dispersion 20min pours in the sedimentation bottle and leaves standstill observation, alclad modification TiO
2The complete settling time in zellon is 120h.With 200mg alclad modification TiO
2Being mixed in 10ml contains in the zellon of oil red, ultrasonic dispersion 20min, get the 0.5ml dispersion liquid and put into the electrophoresis showed box, add positive voltage switches to equality strength after 30 seconds reverse voltage, dispersion liquid has more tangible red white colour to change generation, electrophoresis apparatus receives the change color in the display box, obtains alclad modification TiO
2Response time is 35s in zellon.
Embodiment 2
10g titania is added in the 150ml aqueous solution, regulating pH with 1%HCl is 4, ultrasonic pre-dispersed 15min, and then the organic modifiers neopelex (SDBS) of adding 0.5g, ultrasonic dispersion 1h, through filtration, dry, screening, can obtain particle diameter at the organically-modified titania of 100～200nm.Organically-modified TiO
2Dispersiveness and charging property characterize by static sedimentation and electrophoretic characteristic instrument: with the organically-modified TiO of 500mg
2Be mixed in the 30ml zellon, ultrasonic dispersion 20min pours in the sedimentation bottle and leaves standstill observation, obtains organically-modified TiO
2Rate of descent in zellon behind the 200h is 0.33.With the organically-modified TiO of 200mg
2Be scattered in the zellon that 10ml contains oil red, ultrasonic dispersion 20min, get the 0.5ml dispersion liquid and put into the electrophoresis showed box, add positive voltage switches to equality strength after 30 seconds reverse voltage, dispersion liquid has more tangible red white colour to change generation, electrophoresis apparatus receives the change color in the display box, obtains organically-modified TiO
2Response time is 44s in zellon.
Embodiment 3:
Method of operating is identical with embodiment 2, removing regulator solution pH is 12, add outside the 2.5g organic modifiers neopelex (SDBD), all the other operation stepss are with embodiment 2, can obtain particle diameter at the organically-modified titania of 100～200nm, this modified particle in zellon behind the 200h rate of descent be 0.583, electric field response is 52s.
Embodiment 4:
Method of operating is identical with embodiment 2, removing regulator solution pH is 6, adding the 1.5g organic modifiers is outside the neopelex (SDBD), all the other operation stepss are with embodiment 2, can obtain particle diameter at the organically-modified titania of 100～200nm, this modified particle in zellon behind the 200h rate of descent be 0.23, electric field response is 30s.
Embodiment 5:
The 0.5g polyester dispersants is dissolved in the 30ml zellon, the 4.84g alclad modifying titanium dioxide that adds the 0.16g carbon black then and obtain by embodiment 1, ultrasonic dispersion 20min obtains electrophoresis disclosing solution.Get the 29.5ml electrophoresis disclosing solution and pour in the sedimentation bottle and leave standstill observation, do not occur obvious layering during 24h.Get the 0.5ml electrophoresis disclosing solution and put into the electrophoresis showed box, add positive voltage switches to equality strength after 30 seconds reverse voltage, dispersion liquid has significantly black and white change color generation.
Comparative Examples 1:
Under stirring condition, with 15gTiO
2Be blended in the 150mL water, be warming up to 70 ℃, add 15mL methyl methacrylate and 1mL methacrylic acid as reaction monomers, the 2.5g sodium bisulfite adds the 100mg sodium bisulfite again behind the reaction 2h and is warming up to 80 ℃ of maintenance 1h as initiating agent.Naturally cool to room temperature then, be placed on again in the blast drier and descend dry 4h, obtained polymethylmethacrylate modifying titanium dioxide particle at 50 ℃.0.225g Span-80 spreading agent is dissolved in the 30mL zellon, adds 0.024g carbon black and 0.476g polymethylmethacrylate modifying titanium dioxide then, ultrasonic dispersion 20min obtains electrophoresis disclosing solution.Observes electrophoresis disclosing solution 12h and obvious layering occurs, and the upper strata is clear liquid that particle precipitation is in the bottom.This electrophoresis disclosing solution can not be used to prepare electron ink microcapsule.
Table 1
| Embodiment | Modification TiO 2 | C and TiO 2Amount ratio | Electrophoresis particle accounts for solution quality number percent (%) | Spreading agent | Spreading agent accounts for electrophoresis particle quality (%) |
| 5 | Embodiment 1 | 1∶30 | 5 | UV681 | 10 |
| 6 | Embodiment 1 | 1∶20 | 1 | CH-6 type hyper-dispersant | 40 |
| 7 | Embodiment 1 | 1∶15 | 0.2 | CH-6 type hyper-dispersant | 20 |
| 8 | Embodiment 2 | 1∶15 | 0.2 | CH-6 type hyper-dispersant | 40 |
| 9 | Embodiment 2 | 1∶20 | 1 | UV681 | 20 |
| 10 | Embodiment 2 | 1∶30 | 5 | CH-6 type hyper-dispersant | 10 |
| 11 | Embodiment 3 | 1∶15 | 1 | CH-6 type hyper-dispersant | 10 |
| 12 | Embodiment 3 | 1∶20 | 5 | CH-6 type hyper-dispersant | 40 |
| 13 | Embodiment 3 | 1∶30 | 0.2 | UV681 | 20 |
| 14 | Embodiment 4 | 1∶15 | 0.2 | CH-6 type hyper-dispersant | 10 |
| 15 | Embodiment 4 | 1∶20 | 1 | UV681 | 40 |
| 16 | Embodiment 4 | 1∶30 | 5 | CH-6 type hyper-dispersant | 20 |
Claims (7)
1, a kind of preparation method who is used for the black-white electrophoresis display liquid of electric ink is equipped with electrophoresis disclosing solution with electrophoresis particle, dispersion medium zellon and spreading agent through mixing, ultrasonic decentralized system, it is characterized in that:
(1) electrophoresis particle is made of white electrophoretic particles and black electrophoretic particles, and white electrophoretic particles is inorganic modified titanium dioxide granule or organically-modified titanium dioxide granule, and black electrophoretic particles is the carbon black nano particle; The mass ratio of black electrophoretic particles and white electrophoretic particles is 1: 15～1: 30;
(2) spreading agent polymer dispersant, dispersant dosage are 10%～40% of electrophoresis particle consumption;
(3) the electrophoresis particle consumption is 0.2%～5% of a zellon quality;
(4) electrophoresis disclosing solution that obtains is the two apparent electrophoresis disclosing solutions of black and white.
2, according to the described preparation method of claim 1, it is characterized in that: the particle diameter of white electrophoretic particles is at 100～200nm.
3, according to the described preparation method of claim 1, it is characterized in that: the particle diameter of black electrophoretic particles is at 30～70nm.
4, according to the described preparation method of claim 1, it is characterized in that: earlier spreading agent is mixed with zellon, and then add black electrophoretic particles and the ultrasonic dispersion of white electrophoretic particles 20min, obtain electrophoresis disclosing solution.
5, according to the described preparation method of claim 1, it is characterized in that: organically-modified titanium dioxide granule prepares with the following method: with particle diameter is that the titania of 100～200nm is added to and is mixed with suspending liquid in the aqueous solution, and to regulate pH with concentration 1%HCl be 4～12, through ultrasonic pre-dispersed; And then add the organic modifiers neopelex, and the mass ratio of organic modifiers and titania is 1: 4～1: 20, through ultrasonic dispersion, drying, screening, can obtain particle diameter is the organically-modified TiO 2 particles of 100～200nm.
6, according to the described preparation method of claim 1, it is characterized in that: inorganic modified titanium dioxide granule is the alclad modifying titanium dioxide.
7, according to the described preparation method of claim 1, it is characterized in that: polymer dispersant is polyester dispersants or CH-6 hyper-dispersant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101261601A CN100397228C (en) | 2005-12-01 | 2005-12-01 | Method for preparing black-white electrophoresis display liquid used for electronic ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101261601A CN100397228C (en) | 2005-12-01 | 2005-12-01 | Method for preparing black-white electrophoresis display liquid used for electronic ink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1979319A true CN1979319A (en) | 2007-06-13 |
| CN100397228C CN100397228C (en) | 2008-06-25 |
Family
ID=38130525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101261601A Expired - Fee Related CN100397228C (en) | 2005-12-01 | 2005-12-01 | Method for preparing black-white electrophoresis display liquid used for electronic ink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397228C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870827A (en) * | 2010-05-28 | 2010-10-27 | 北京化工大学 | Preparation method of stable double-particle system electronic ink display solution |
| CN101333352B (en) * | 2007-06-29 | 2010-12-08 | 中国科学院理化技术研究所 | Method for preparing electronic ink by adopting light composite functional ball with sub-optical wavelength |
| CN101916024A (en) * | 2010-08-06 | 2010-12-15 | 浙江大学 | Preparation method of electrophoretic liquid containing two-way phoresis particles |
| CN102314039A (en) * | 2011-08-18 | 2012-01-11 | 天津大学 | Composition of black and white electrophoretic display liquid for electrophoretic display and preparation method thereof |
| CN102654709A (en) * | 2011-08-15 | 2012-09-05 | 京东方科技集团股份有限公司 | Electronic ink, electronic paper and display method of electronic paper |
| CN101550288B (en) * | 2009-05-15 | 2012-10-17 | 北京化工大学 | Preparation method of colourful electrophoresis disclosing solution for electronic ink display |
| CN103193916A (en) * | 2013-04-02 | 2013-07-10 | 复旦大学 | Preparation method of polymeric microspheres for electrophoretic display |
| CN107092149A (en) * | 2016-02-17 | 2017-08-25 | 精工爱普生株式会社 | Electrophoresis dispersion, electrophoretic sheet, electrophoretic apparatus and electronic equipment |
| CN111323983A (en) * | 2020-03-19 | 2020-06-23 | 深圳秋田微电子股份有限公司 | Electrophoresis liquid for improving low-temperature resistance of electronic paper |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2733677B2 (en) * | 1989-02-25 | 1998-03-30 | エヌオーケー株式会社 | Electrophoretic display device, display dispersion system, and method for producing the dispersion system |
| US7079305B2 (en) * | 2001-03-19 | 2006-07-18 | E Ink Corporation | Electrophoretic medium and process for the production thereof |
| US6721083B2 (en) * | 1996-07-19 | 2004-04-13 | E Ink Corporation | Electrophoretic displays using nanoparticles |
| ATE280963T1 (en) * | 1997-08-28 | 2004-11-15 | E Ink Corp | NEW ADDRESSING CIRCUIT FOR ELECTROPHORETIC DISPLAY DEVICES |
| EP1393122B1 (en) * | 2001-05-15 | 2018-03-28 | E Ink Corporation | Electrophoretic particles |
| TW527529B (en) * | 2001-07-27 | 2003-04-11 | Sipix Imaging Inc | An improved electrophoretic display with color filters |
| CN1216948C (en) * | 2002-10-21 | 2005-08-31 | 西北工业大学 | Red electronic ink display material and its preparing technology |
| CN100361017C (en) * | 2002-10-21 | 2008-01-09 | 西北工业大学 | White electronic ink micro capsule |
| CN1239643C (en) * | 2002-12-09 | 2006-02-01 | 西北工业大学 | Prepn of field electronic ink |
| JP2005004185A (en) * | 2003-05-21 | 2005-01-06 | Mitsubishi Chemicals Corp | Dispersion liquid for electrophoresis display, and display device using the same |
| JP2005037851A (en) * | 2003-06-24 | 2005-02-10 | Seiko Epson Corp | Electrophoretic dispersion, electrophoresis display device, method for manufacturing electrophoresis display device, and electronic appliance |
| JP4501393B2 (en) * | 2003-10-01 | 2010-07-14 | 富士ゼロックス株式会社 | Particles for display device, image display medium and image forming apparatus |
| JP2005309079A (en) * | 2004-04-21 | 2005-11-04 | Mitsubishi Chemicals Corp | Dispersion liquid for electrophoresis display, and particle for electrophoresis display and electrophoresis display device using the same |
-
2005
- 2005-12-01 CN CNB2005101261601A patent/CN100397228C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333352B (en) * | 2007-06-29 | 2010-12-08 | 中国科学院理化技术研究所 | Method for preparing electronic ink by adopting light composite functional ball with sub-optical wavelength |
| CN101550288B (en) * | 2009-05-15 | 2012-10-17 | 北京化工大学 | Preparation method of colourful electrophoresis disclosing solution for electronic ink display |
| CN101870827A (en) * | 2010-05-28 | 2010-10-27 | 北京化工大学 | Preparation method of stable double-particle system electronic ink display solution |
| CN101870827B (en) * | 2010-05-28 | 2013-04-10 | 北京化工大学 | Preparation method of stable double-particle system electronic ink display solution |
| CN101916024A (en) * | 2010-08-06 | 2010-12-15 | 浙江大学 | Preparation method of electrophoretic liquid containing two-way phoresis particles |
| US9523903B2 (en) | 2011-08-15 | 2016-12-20 | Boe Technology Group Co., Ltd. | Electrophoretic ink, electronic paper and display method for electronic paper |
| CN102654709A (en) * | 2011-08-15 | 2012-09-05 | 京东方科技集团股份有限公司 | Electronic ink, electronic paper and display method of electronic paper |
| WO2013023598A1 (en) * | 2011-08-15 | 2013-02-21 | 京东方科技集团股份有限公司 | Electronic ink, electronic paper, and displaying method for electronic paper |
| CN102314039A (en) * | 2011-08-18 | 2012-01-11 | 天津大学 | Composition of black and white electrophoretic display liquid for electrophoretic display and preparation method thereof |
| CN102314039B (en) * | 2011-08-18 | 2013-11-06 | 天津大学 | Composition of black and white electrophoretic display liquid for electrophoretic display and preparation method thereof |
| CN103193916B (en) * | 2013-04-02 | 2015-06-17 | 复旦大学 | Preparation method of polymeric microspheres for electrophoretic display |
| CN103193916A (en) * | 2013-04-02 | 2013-07-10 | 复旦大学 | Preparation method of polymeric microspheres for electrophoretic display |
| CN107092149A (en) * | 2016-02-17 | 2017-08-25 | 精工爱普生株式会社 | Electrophoresis dispersion, electrophoretic sheet, electrophoretic apparatus and electronic equipment |
| CN111323983A (en) * | 2020-03-19 | 2020-06-23 | 深圳秋田微电子股份有限公司 | Electrophoresis liquid for improving low-temperature resistance of electronic paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100397228C (en) | 2008-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100397228C (en) | Method for preparing black-white electrophoresis display liquid used for electronic ink | |
| CN101293936B (en) | Preparation method of monodisperse polystyrene microsphere with controllable particle size | |
| CN102391410B (en) | Inorganic nano particle modified composite waterproof emulsion and preparation method thereof | |
| CN1243801C (en) | Dispersions having improved stability | |
| CN101633786B (en) | Structural color film material and method for preparing same | |
| CN105700265B (en) | Color electrophoretic display with electric field response photonic crystal properties and preparation method thereof and display methods | |
| CN1817981A (en) | Nanometer painting ink-jetting printing oil ink and production thereof | |
| TW200411036A (en) | Method for dispersing and grinding ultrafine particles | |
| CN104212197B (en) | The method preparing amphipathic modified organic pigment based on the discontinuous deposition of Ludox | |
| CN100366683C (en) | Process for preparing nano-grade disperse blue 2BLN dye by reprecipitation-homogenization method | |
| CN1922277A (en) | Method for improving the storage stability of composite particle dispersions | |
| CN106757412B (en) | A method of nano fluorescence fiber material is prepared using rare earth compounding | |
| CN102847497A (en) | Preparation method and application of nanometer pigment microcapsule | |
| CN102816456A (en) | Method for preparing core pigment red 170 by inorganic nano material modification | |
| CN109943202A (en) | A kind of aqueous epoxy nano fiber anticorrosive paint and preparation method thereof | |
| EP2449039A1 (en) | Ink-jet overcoats including latex polymers and inorganic nano particles | |
| CN102532938B (en) | Preparation method of pigment preparations containing superfine phthalocyanine pigment particles | |
| CN101798477A (en) | Thermal transfer ink jet ink nano capsule and preparation method thereof | |
| CN101033353A (en) | Color type water-based ink compositions and preparation method thereof | |
| CN1398284A (en) | Surface-modified pearl pigment and process for producing same | |
| CN111925670B (en) | Preparation method of ultraviolet-proof polymer-coated nano aluminum oxide pigment | |
| CN107778991B (en) | Zirconium-free ultra-white water-based ceramic ink for ink-jet printing and preparation method thereof | |
| CN108997912A (en) | A kind of aqueous double-component polyurethane finishing coat and preparation method thereof | |
| CN102532943B (en) | Preparation method for reverse phase microemulsion of dye solution | |
| CN1299159C (en) | Preparation method of microcapsule |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |