WO2012141528A2 - Procédé pour le traitement de surface de particule de papier électronique utilisant un additif de dioxyde de titane et particule de papier électronique utilisant un additif de dioxyde de titane fabriqué ainsi - Google Patents

Procédé pour le traitement de surface de particule de papier électronique utilisant un additif de dioxyde de titane et particule de papier électronique utilisant un additif de dioxyde de titane fabriqué ainsi Download PDF

Info

Publication number
WO2012141528A2
WO2012141528A2 PCT/KR2012/002818 KR2012002818W WO2012141528A2 WO 2012141528 A2 WO2012141528 A2 WO 2012141528A2 KR 2012002818 W KR2012002818 W KR 2012002818W WO 2012141528 A2 WO2012141528 A2 WO 2012141528A2
Authority
WO
WIPO (PCT)
Prior art keywords
titanium dioxide
particles
electronic paper
surface treatment
external additive
Prior art date
Application number
PCT/KR2012/002818
Other languages
English (en)
Korean (ko)
Other versions
WO2012141528A3 (fr
Inventor
이상국
최경호
신교직
김은경
정승용
Original Assignee
한국생산기술연구원
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 한국생산기술연구원 filed Critical 한국생산기술연구원
Publication of WO2012141528A2 publication Critical patent/WO2012141528A2/fr
Publication of WO2012141528A3 publication Critical patent/WO2012141528A3/fr

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F2001/1678—Constructional details characterised by the composition or particle type

Definitions

  • the present invention relates to a surface treatment method for particles of electronic paper using titanium dioxide external additives and to particles for electronic paper using titanium dioxide external additives prepared using the same. More specifically, unlike the conventional method, a solution adsorption method is used. By chemically adsorbing the external additives to the particles, forming functional groups, and surface treating them, the titanium dioxide external additives which not only impart strong charges to the particles and prevent aggregation among the particles, but also significantly improve durability and flowability
  • the present invention relates to a surface treatment method of particles for electronic paper using, and to particles for electronic paper using titanium dioxide external additive prepared using the same.
  • the dual electronic paper technology uses the rapid movement of microparticles by an electric field to electrostatically move charged particles floating in a certain space to display colors. Therefore, even if the voltage is removed, the image does not disappear because there is no change in the position of the particles, so that the effect as if printed on paper is printed. In other words, it does not emit light by itself, but the visual fatigue is very low, so it is possible to enjoy a comfortable viewing like a real book, and the panel's flexibility is high enough to bend and the thickness can be formed very thin. There is great expectation as a display device technology. In addition, as mentioned, power consumption is extremely low since the displayed image is maintained for a long time unless the panel is reset, thereby making it excellent as a portable display device. In particular, low prices due to simple processes and low cost materials are expected to contribute to the popularization of electronic paper.
  • Electronic paper techniques generally used include electrophoretic methods for microencapsulating a dispersion consisting of dispersed particles and a colored solution, and disposing the dispersion liquid between opposing substrates to cause particles to move in the liquid; Without using a solution, two or more kinds of particles having different colors and charging characteristics are enclosed between at least one transparent substrate, and an electric field is applied to the particles from an electrode pair consisting of electrodes formed on one or both of the substrates.
  • a collision charging method has been proposed in which an charged particle having a different polarity is moved and moved in different directions by a Coulomb force to display an image.
  • a technique for forming a charged particle having a fluidity (hereinafter referred to as a 'fluid particle') should be accompanied, and the fluid particle may have a coupling agent or the like on the surface of the particle.
  • liquidity is shown by coating the same external additive.
  • the flowable particles include an external blending method using a mixer by adding an external additive to a dispersion solvent containing the particles.
  • the flowable particles in this manner, the particles and the external additives are physically bonded, due to the limitation of the durability of the physical bonds, there is a problem that the external components easily fall off.
  • a polymerization method according to emulsion polymerization, dispersion polymerization or suspension polymerization is used. Since the polymer particles thus prepared mostly exhibit lipophilic surface properties, hydrophilic functional groups are formed on the surface. It is difficult to apply a new polymerization method for the introduction of the hydrophilic functional group in order to obtain the polymer particles bound, and unlike most commercial lipophilic polymer particles, very high in order to obtain the polymer particles into which the hydrophilic functional groups are introduced. In addition to the cost, there is a problem in that a cumbersome and inexpensive manufacturing method such as using a surfactant is used.
  • the present invention is to solve the above problems, unlike the prior art, by using a solution adsorption method, not only can adsorb the external additives to the particles more quantitatively and uniformly, but also due to chemical bonding, significantly improve the durability
  • An object of the present invention is to provide a surface treatment method for an electronic paper particle using a titanium dioxide external additive, and an electronic paper particle using a titanium dioxide external additive prepared using the same.
  • the surface treatment of the particles for electronic paper using titanium dioxide external additive which enhances the durability and fluidity of the particles by reacting the titanium dioxide formed with hydrochloric acid, glutaraldehyde and amino groups in the optimum content ratio by the solution adsorption method It is an object of the present invention to provide an electronic paper particle using the method and the titanium dioxide external additive prepared using the same.
  • An object of the present invention is to provide an electronic paper particle additive for electronic paper using titanium dioxide and an electronic paper particle additive for titanium paper prepared using the same.
  • the surface treatment method of the particle for electronic paper using the titanium dioxide external additive according to the present invention comprises adding bare particles to a second solvent to which titanium dioxide having an amino group is added, followed by dispersion and reaction.
  • the reaction preparation step the titanium dioxide having the amino group
  • the purification step of purifying the titanium dioxide by heat treatment at 300 to 500 °C for 15 to 30 hours
  • an amino group substitution step of adding titanium dioxide to the first solvent and reacting to produce titanium dioxide having an amino group.
  • the second solvent is characterized in that the isopropyl alcohol (Isopropyl Alcohol), in the reaction preparation step, the bare particles are prepared by synthesizing a monomer, a polymerization initiator and an ionic monomer.
  • the ionic monomer is characterized in that any one of styrene sulfonic acid (Styrene sulfonic acid) or [2- (methacryloxy) ethyl] trimethyl ammonium chloride.
  • the monomer is at least one of methyl methacrylate, ethylene terephthalate, styrenesulfonate, vinyl acetate, methyl styrene, acrylic acid, butyl methacrylate, ethyl methacrylate, 2-ethylhexyl acrylate or N-vinyl caprolactam
  • the polymerization initiator is at least one of a peroxide compound or an azo compound.
  • the titanium dioxide having the amino group is added to 0.1 parts by weight based on 100 parts by weight of the second solvent, with respect to 100 parts by weight of the second solvent, the bare particles Is characterized by adding 1 to 5 parts by weight.
  • the hydrochloric acid and glutaraldehyde are added to 60 parts by weight to 90 parts by weight, respectively, with respect to 100 parts by weight of the second solvent.
  • the hydrochloric acid and glutaraldehyde are added while stirring using a magnetic bar at 10 to 30 ° C.
  • the reaction time is characterized in that 1 to 3 hours
  • the first solvent is characterized in that toluene.
  • the amino group substitution step the reaction solution manufacturing step of preparing a reaction solution by adding the titanium dioxide to the first solvent, and then dispersing; A heating step of heating the reaction solution under a nitrogen atmosphere; An ethoxysilane addition step of adding (3-aminopropyl) triethoxysilane to the reaction solution; And a stirring step of stirring the reaction solution.
  • the titanium dioxide is characterized in that 20 to 50 parts by weight with respect to 100 parts by weight of the first solvent, the heating step, the temperature of the reaction solution of 60 °C to 90 °C It is characterized by maintaining at a temperature.
  • the (3-aminepropyl) triethoxysilane is characterized in that 20 to 50 parts by weight, the stirring step, the reaction solution 60 It is characterized by stirring for 15 to 30 hours at a temperature of °C to 90 °C.
  • the surface treatment method of the particle for electronic paper using the titanium dioxide external additive of the present invention and the particle for electronic paper using the titanium dioxide external additive prepared by using the same unlike the conventional method, by using a solution adsorption method, Not only can the external additive be adsorbed to the particles uniformly, but also due to the chemical bonding, the durability can be significantly improved.
  • the external additive improves the contrast ratio in the electronic paper apparatus. There is an advantage to this.
  • 1 is a flow chart sequentially showing a manufacturing method of the particle external additive for electronic paper using titanium dioxide according to the present invention.
  • Figure 2 is a cross-sectional view showing the particles for electronic paper using the titanium dioxide external additive prepared by using the surface treatment method of the electronic paper particles using the titanium dioxide external additive according to the present invention.
  • the surface treatment method of the electronic paper particles using the titanium dioxide external additive according to the present invention the purification step (S10), amino-substituted step (S20), reaction preparation step (S30) and particle surface treatment It characterized in that it comprises a step (S40).
  • the reaction preparation step (S30) is a step of preparing a reaction preparation solution by adding the bare particles to the second solvent to which titanium dioxide having an amino group is added, and then dispersed. This is a step of preparing a reaction by dispersing bare particles and an external additive in a solvent before starting the particle surface treatment reaction.
  • the second solvent may be any solvent that facilitates the dispersion of the titanium dioxide external additive and the bare particles, and may help the particle surface treatment reaction thereafter, but several experiment results In the present invention, it is most effective to use isopropyl alcohol, which is preferably used.
  • the bare particles are preferably prepared by synthesizing a monomer, a polymerization initiator and an ionic monomer.
  • the monomers, the polymerization initiator, and the ionic monomer are added to the solvent, followed by stirring to synthesize the bare particles.
  • the solvent may be any material that does not interfere with particle synthesis and may help the reaction, but methanol is most preferably used.
  • the monomer is methyl methacrylate, ethylene terephthalate, styrene sulfonate, vinyl acetate, methyl styrene, acrylic acid, butyl methacrylate, ethyl methacrylate, 2-ethylhexyl acrylate or N-vinyl caprolactam It is preferable to use at least one, and the above materials may be copolymerized.
  • the polymerization initiator may use any free radical polymerization initiator capable of triggering an emulsion-free polymerization, but in the present invention, at least one of a peroxide compound or an azo compound is preferable, and the peroxide compound is, in principle, an inorganic peroxide, For example alkyl hydroperoxides, examples being tert-butyl, p-mentyl and cumyl hydroperoxide, and also dialkyl or diaryl peroxides such as di-tert-butyl peroxide or dicumyl peroxide Azo compounds are mainly 2,2'-azobis (isobutylonitrile), 2,2'-azobis (isobutyramidine) hydrochloride (2,2'-azobis (isobutyramidine) hydrochloride) It is most efficient to use 'AIBN') as a polymerization initiator.
  • a peroxide compound or an azo compound is preferable, and the peroxide compound is, in principle, an inorgan
  • the ionic monomer is preferably either styrene sulfonic acid or [2- (methacryloxy) ethyl] trimethyl ammonium chloride.
  • styrene sulfonic acid serves to impart a negative charge to the bare particles
  • [2- (methacryloxy) ethyl] trimethyl ammonium chloride serves to impart a (+) charge to the bare particles.
  • Styrene sulfonic acid or [2- (methacryloxy) ethyl] trimethyl ammonium chloride is very effective in the present invention because it is easy to synthesize particles and can impart an appropriate amount of charge.
  • the external additives of the particles having a (+), (-) charge is one charge
  • the titanium dioxide having the amino group is preferably added to 0.1 to 1 parts by weight, more preferably 0.3 to 0.5 parts by weight based on 100 parts by weight of the second solvent. If it is less than 0.1 part by weight, it is difficult to function as an external additive because it is not sufficiently bonded to bare particles. If it exceeds 1 part by weight, it is an excessive amount, rather the reactivity with particles is lowered, and it is difficult to be externally evenly added to the particles. There is.
  • the external additive is less than 1 part by weight, there is a problem of excessive amount of external additives, etc., relative to the particles, which is not economical, but rather inferior in reactivity with the particles.
  • the external additive is less than the amount to be evenly bonded to the bare particles, there is a problem that the external additive is not sufficiently bonded and the function of the external additive is significantly reduced.
  • the particle surface treatment step (S40) is a step of reacting by adding hydrochloric acid and glutaraldehyde to the reaction preparation solution. This is a particle surface treatment step of effectively binding the external additive to the particles by reacting the external additive with the particles.
  • the particle surface treatment step (S40) it is preferable to add the hydrochloric acid and glutaraldehyde while stirring the reaction preparation solution using a magnetic bar at 10 to 30 °C. That is, it is preferable that reaction temperature is 10-30 degreeC, More preferably, it is effective that it is 20-25 degreeC. In this temperature range, the reaction is maximized, and when it is out of the temperature range, there is a problem that the reaction does not occur, or even when the reaction occurs, the binding force between the particles and the external additives is lowered.
  • the reaction time is preferably 1 to 3 hours, more preferably 2 hours. If less than 1 hour does not occur a sufficient reaction, if more than 3 hours there is a problem that not only the economic efficiency is lowered, but rather the impurities are bonded to the surface of the particles to reduce the durability.
  • the particle surface treatment step (S40) After washing the particles using isopropyl alcohol or ethanol, it is effective to dry at 10 to 30 °C. Although not essential as a process to prevent aggregation or bonding between the particles, washing and drying are more effective.
  • reaction preparation step (S30) a process for preparing the titanium dioxide external additive having the amino group used in the reaction preparation step (S30) must first proceed, and the manufacturing process of the titanium dioxide external additive having such an amino group It consists of a purification step (S10) and an amino group substitution step (S20).
  • the purification step (S10) is a step of purifying titanium dioxide by heat treatment at 300 to 500 °C for 15 to 30 hours. This is a heat treatment process that effectively removes and purifies moisture and impurities in titanium dioxide without damaging titanium dioxide.
  • the heat treatment temperature is preferably 300 to 500 ° C, more preferably 350 to 450 ° C. If the temperature is less than 300 ° C., there is a problem in that the moisture and impurities are not sufficiently purified, and if the temperature exceeds 500 ° C., there is a problem that damage may occur to the titanium dioxide itself.
  • the heat treatment time is preferably 15 to 30 hours, more preferably 20 to 25 hours. If less than 15 hours, there is a problem that can not be sufficiently refined, if more than 30 hours there is a problem that not only economic efficiency, but also damage to titanium dioxide.
  • titanium dioxide is used as the external additive of the particles for electronic paper, since it is white, there is an advantage that the contrast ratio with respect to the white particles can be increased, and it is easy to combine with the electronic paper particles, and the durability is effective as an external additive. to be.
  • the amino group substitution step (S20) is a step of preparing titanium dioxide having an amino group by reacting by adding the titanium dioxide to the first solvent. This is a process for remarkably improving the fluidity of particles and preventing agglomeration by providing amino groups to titanium dioxide.
  • the first solvent does not interfere with the amino group substitution reaction, any solvent that can help, any number of experiments in the present invention, it is most preferable to use toluene. Do.
  • the amino group substitution step (S20) preferably comprises a reaction solution preparation step (S21), heating step (S22), ethoxysilane addition step (S23) and stirring step (S24).
  • the reaction solution preparation step (S21) is a step of preparing the reaction solution by adding and dispersing the titanium dioxide to the first solvent. This is a reaction preparation process in which titanium dioxide is mixed with the first solvent in an optimum amount and then dispersed to facilitate the reaction.
  • the titanium dioxide is preferably added to 20 to 50 parts by weight, more preferably 30 to 40 parts by weight based on 100 parts by weight of the first solvent. to be. If the amount of titanium dioxide is less than 20 parts by weight, the amount contained in the first solvent is too small, there is a problem that the substitution reactivity of the amino group is inferior, if more than 50 parts by weight titanium dioxide is not sufficiently dispersed in the first solvent is effective Not only is the reaction difficult, but there is a problem that a sufficient amino group is not provided to titanium dioxide.
  • the heating step (S22) is a step of heating the reaction solution under a nitrogen atmosphere. This is a process for creating an effective reaction environment for amino group substitution by maintaining a constant high temperature under a nitrogen atmosphere.
  • the temperature of the reaction solution it is preferable to maintain the temperature of the reaction solution at a temperature of 60 °C to 90 °C, more preferably it is effective to maintain a temperature of 70 °C to 80 °C. If it is less than 60 °C there is a problem that the reaction between the nitrogen and the reaction solution is difficult to occur, and if it exceeds 90 °C there is a problem that the reaction solution is difficult to maintain the optimum content ratio due to the high temperature.
  • the ethoxysilane addition step (S23) is a step of adding (3-aminopropyl) triethoxysilane ((3-aminopropyl) triethoxysilane) to the reaction solution. This is a step of adding a reactant of a substitution reaction to give an amino group to titanium dioxide particles.
  • the (3-aminepropyl) triethoxysilane is preferably 20 to 50 parts by weight, more preferably 30 to 40 parts by weight based on 100 parts by weight of the first solvent. Denial is effective. If it is less than 20 parts by weight, there is a problem that a sufficient amino group is difficult to be imparted to the titanium dioxide phase, and if it exceeds 50 parts by weight, it is difficult to uniformly distribute an appropriate amount of the amino groups imparted onto the titanium dioxide, rather the fluidity of the particles is lowered. There is a problem.
  • the stirring step (S24) is a step of stirring the reaction solution. This is a process of reacting (3-aminepropyl) triethoxysilane with titanium dioxide under a nitrogen atmosphere.
  • the reaction solution is preferably stirred for 15 to 30 hours at a temperature of 60 °C to 90 °C, more preferably for 20 to 25 hours at a temperature of 70 °C to 80 °C Is effective. If the temperature is lower than 70 ° C., the temperature is low, and the reactivity decreases, thereby making it difficult to sufficiently bond the amino group to titanium dioxide. If the temperature exceeds 90 ° C., the reaction rate is increased, but the amino group is uniformly bound to the titanium dioxide. It is difficult to achieve, and there is a problem that the reactants are damaged.
  • Drying step (S25) is divided into a step of washing the titanium dioxide having the reaction- terminated amino group with toluene and after washing, the step of sufficiently drying at 15 to 30 °C for 24 to 48 hours. First, by washing, by removing the unreacted material, thereby improving the external reactivity to the particles, and serves to facilitate the subsequent particle surface treatment process through the drying process.
  • the particles for electronic paper using the titanium dioxide external additive prepared according to the present invention as shown in Figure 2, bare particles (Bare particle) 10, and the external additive particles attached to the bare particles (10) (20), and the chemical bond 30 between the external additive particles 20 and the amino group 40 attached to the external additive particles 20.
  • the bare particles 10 are preferably white particles in accordance with the color of the particle external additive for electronic paper using titanium dioxide of the present invention.
  • the charge of the external additive particle 20 is negative (-), and by externally externalizing the external additive particle 20 of the present invention, which bears (-) charge to both the (+) and (-) bare particles 10, Aggregation between particles can be completely prevented.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

La présente invention concerne un procédé pour le traitement de surface d'une particule de papier électronique utilisant un additif de dioxyde de titane, et la particule de papier électronique utilisant l'additif de dioxyde de titane fabriqué ainsi, et comprend : une étape de préparation de réaction d'ajout d'une particule nue à un deuxième solvant dans lequel un dioxyde de titane ayant un groupe amino est ajouté, et ensuite la dispersion de celle-ci pour fabriquer une solution de préparation de réaction; et une étape de traitement de surface de particule d'ajout d'acide chlorhydrique et de glutaraldéhyde à la solution de préparation de réaction et réaction de celle-ci. Selon la présente invention, en utilisant un procédé d'adsorption de solution au lieu d'un procédé existant, l'additif externe peut être adsorbé plus quantitativement et uniformément sur la particule, et une combinaison chimique peut augmenter significativement la durabilité. De plus, la durabilité et la mobilité des particules peuvent être significativement augmentées par réaction de l'acide chlorhydrique, du glutaraldéhyde, du dioxyde de titane ayant le groupe amino, et des particules dans une proportion optimale selon le procédé d'adsorption en solution.
PCT/KR2012/002818 2011-04-14 2012-04-13 Procédé pour le traitement de surface de particule de papier électronique utilisant un additif de dioxyde de titane et particule de papier électronique utilisant un additif de dioxyde de titane fabriqué ainsi WO2012141528A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0034888 2011-04-14
KR1020110034888A KR101227470B1 (ko) 2011-04-14 2011-04-14 이산화티타늄 외첨제를 이용한 전자종이용 입자의 표면처리방법 및 이를 이용하여 제조된 이산화티타늄 외첨제를 이용한 전자종이용 입자

Publications (2)

Publication Number Publication Date
WO2012141528A2 true WO2012141528A2 (fr) 2012-10-18
WO2012141528A3 WO2012141528A3 (fr) 2013-01-10

Family

ID=47009858

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/002818 WO2012141528A2 (fr) 2011-04-14 2012-04-13 Procédé pour le traitement de surface de particule de papier électronique utilisant un additif de dioxyde de titane et particule de papier électronique utilisant un additif de dioxyde de titane fabriqué ainsi

Country Status (2)

Country Link
KR (1) KR101227470B1 (fr)
WO (1) WO2012141528A2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040033332A (ko) * 2002-10-09 2004-04-28 한국전자통신연구원 기능성 유기화합물로 코팅된 전기영동 디스플레이용 대전입자 및 그 제조 방법
KR20050054794A (ko) * 2003-12-06 2005-06-10 이비텍(주) 전기영동 디스플레이용 유색 하전입자 슬러리 조성물 및 그의 제조 방법
KR20090050249A (ko) * 2007-11-15 2009-05-20 주식회사 엘지화학 전자종이용 화상표시입자의 제조방법, 이에 의해 제조된화상표시입자 및 이를 포함하는 전자종이
KR20090127554A (ko) * 2008-06-09 2009-12-14 한국생산기술연구원 유동성 입자 조성물 및 이를 이용한 유동성 입자의제조방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100564877B1 (ko) * 2003-07-04 2006-03-30 주식회사 신성엔지니어링 초친수 코팅 조성물, 초친수성 전열관 및 그 코팅 방법
KR101272318B1 (ko) * 2010-06-11 2013-06-07 이화여자대학교 산학협력단 이산화티타늄 또는 금-이산화티타늄을 껍질로 갖는 핵/껍질 구조의 나노구조체의 제조방법 및 이에 의하여 제조되는 나노구조체
KR101297627B1 (ko) * 2010-07-06 2013-08-19 한국세라믹기술원 이산화티타늄 잉크 제조 방법 및 그 방법에 의해 제조된 잉크를 이용한 염료감응형 태양전지 제조 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040033332A (ko) * 2002-10-09 2004-04-28 한국전자통신연구원 기능성 유기화합물로 코팅된 전기영동 디스플레이용 대전입자 및 그 제조 방법
KR20050054794A (ko) * 2003-12-06 2005-06-10 이비텍(주) 전기영동 디스플레이용 유색 하전입자 슬러리 조성물 및 그의 제조 방법
KR20090050249A (ko) * 2007-11-15 2009-05-20 주식회사 엘지화학 전자종이용 화상표시입자의 제조방법, 이에 의해 제조된화상표시입자 및 이를 포함하는 전자종이
KR20090127554A (ko) * 2008-06-09 2009-12-14 한국생산기술연구원 유동성 입자 조성물 및 이를 이용한 유동성 입자의제조방법

Also Published As

Publication number Publication date
WO2012141528A3 (fr) 2013-01-10
KR20120117248A (ko) 2012-10-24
KR101227470B1 (ko) 2013-01-29

Similar Documents

Publication Publication Date Title
US9732231B2 (en) Method of making electrophoretic dispersion
JP4816703B2 (ja) 表示媒体、及び表示装置
US20130193385A1 (en) Electrophoretic dispersion
JP2005300969A (ja) 電気泳動粒子、電気泳動分散液及びそれらを用いた電気泳動表示素子
KR20150013295A (ko) 전기영동 디스플레이용 입자
WO2012141528A2 (fr) Procédé pour le traitement de surface de particule de papier électronique utilisant un additif de dioxyde de titane et particule de papier électronique utilisant un additif de dioxyde de titane fabriqué ainsi
WO2012141529A2 (fr) Additif externe pour particule de papier électronique pour traitement de surface en duplex utilisant du noir de carbone et du dioxyde de silicium, et particules de papier électronique traitées en surface en duplex utilisant celui-ci
WO2012141527A2 (fr) Additif externe pour particule de papier électronique pour traitement de surface en duplex utilisant du dioxyde de titane et du dioxyde de silicium, et papier électronique traité en surface en duplex en utilisant celui-ci
CN102411244B (zh) 显示媒介和显示装置
KR101248014B1 (ko) 이산화규소 외첨제를 이용한 전자종이용 입자의 표면처리방법 및 이를 이용하여 제조된 이산화규소 외첨제를 이용한 전자종이용 입자
WO2012141530A2 (fr) Procédé pour fabriquer un additif externe pour une particule de papier électronique utilisant du dioxyde de titane et un additif externe pour particule de papier électronique utilisant du dioxyde de titane fabriqué ainsi
KR101265097B1 (ko) 이산화티타늄 및 이산화규소를 이용한 전자종이용 입자의 복합표면처리방법 및 이를 이용하여 복합표면처리된 전자종이용 입자
KR101214973B1 (ko) 카본블랙 외첨제를 이용한 전자종이용 입자의 표면처리방법 및 이를 이용하여 제조된 카본블랙 외첨제를 이용한 전자종이용 입자
KR20130045648A (ko) 카본블랙 및 이산화규소를 이용한 전자종이용 입자의 복합표면처리방법 및 이를 이용하여 복합표면처리된 전자종이용 입자
KR101248012B1 (ko) 이산화규소를 이용한 전자종이용 입자 외첨제의 제조방법 및 이를 이용하여 제조된 이산화규소를 이용한 전자종이용 입자 외첨제
KR101039127B1 (ko) 유동성 입자 조성물 및 이를 이용한 유동성 입자의 제조방법
WO2015183040A1 (fr) Poudre anisotrope amphiphile et son procédé de fabrication
WO2010126218A1 (fr) Composition de particules fluidiques et méthode d'élaboration de particules fluidiques l'utilisant
KR101098536B1 (ko) 테트라놀말부틸티타네이트를 이용한 유동성 입자의 제조방법
KR101202804B1 (ko) 카본블랙을 이용한 전자종이용 입자 외첨제의 제조방법 및 이를 이용하여 제조된 카본블랙을 이용한 전자종이용 입자 외첨제
JP3636908B2 (ja) 液晶表示素子用スペーサ及び液晶表示素子
JPH11326916A (ja) 液晶表示素子用スペーサ及び液晶表示素子
KR101937998B1 (ko) 전기영동 입자, 이를 포함하는 전기영동 소자 및 전기영동 표시장치
KR101098538B1 (ko) Ｔｅｏｓ를 이용한 유동성 입자조성물 및 이를 이용한 유동성 입자의 제조방법
JP5396840B2 (ja) 帯電制御材料、表示用粒子分散液、表示媒体、及び表示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12770715

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12770715

Country of ref document: EP

Kind code of ref document: A2