WO2013075537A1 - 制备彩色微胶囊膜材及含有该膜材的显示器件的方法 - Google Patents

制备彩色微胶囊膜材及含有该膜材的显示器件的方法 Download PDF

Info

Publication number
WO2013075537A1
WO2013075537A1 PCT/CN2012/081361 CN2012081361W WO2013075537A1 WO 2013075537 A1 WO2013075537 A1 WO 2013075537A1 CN 2012081361 W CN2012081361 W CN 2012081361W WO 2013075537 A1 WO2013075537 A1 WO 2013075537A1
Authority
WO
WIPO (PCT)
Prior art keywords
microcapsule
film
color
electrophoretic display
monochromatic
Prior art date
Application number
PCT/CN2012/081361
Other languages
English (en)
French (fr)
Inventor
刘则
Original Assignee
京东方科技集团股份有限公司
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 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US13/700,977 priority Critical patent/US9079387B2/en
Priority to JP2014541515A priority patent/JP6077557B2/ja
Priority to EP12788102.7A priority patent/EP2793075B1/en
Priority to KR1020127030800A priority patent/KR101443998B1/ko
Publication of WO2013075537A1 publication Critical patent/WO2013075537A1/zh

Links

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
    • G02F1/1675—Constructional details
    • G02F1/16757—Microcapsules
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/142—Laminating of sheets, panels or inserts, e.g. stiffeners, by wrapping in at least one outer layer, or inserting into a preformed pocket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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 
    • G02F1/17—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 variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/54—Filled microcapsules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing

Definitions

  • Embodiments of the present invention relate to a method of preparing a color microcapsule electrophoretic display film and a color microcapsule electrophoretic display device. Background technique
  • Electrophoretic Display Technology is one of the most promising electronic display technologies due to the combination of the advantages of plain paper and electronic displays.
  • the electrophoretic display is usually a two-color display, that is, it can only display two different colors, such as black-white, red-blue, and the like. Therefore, the development of color electrophoretic display technology can not only meet people's demand for colorization, but also has great economic benefits, which is an inevitable development direction for electrophoretic display in the future.
  • methods for realizing electrophoretic display colorization include: adding a color filter film, controlling the speed of electrophoresis, and adding sub-pixels.
  • the color filter film method is to add a color filter film on the surface of the upper transparent electrode plate of the two-color electrophoretic display to realize color display, and the color interval between the filter films is prevented by black color.
  • the color electrophoretic display device thus produced has a higher resolution, the color filter film in the method causes about 70% of the reflected light loss, and the color saturation of the image is greatly affected, in a weak light environment. , the display ⁇ is dark.
  • the electrophoresis speed control method is to suspend three kinds of pigment particles of the same kind in different colors and different Zeta potentials in a transparent electrophoresis liquid, and the particles have different electrophoresis speeds by applying a voltage, thereby realizing color display.
  • the method of controlling the electrophoresis speed method for preparing a color display is relatively simple, but it is difficult to accurately control the Zeta potential of the three kinds of pigment particles, and it is difficult to obtain high contrast and brightness of the image.
  • the sub-pixel method uses microcapsule technology to encapsulate electrophoretic fluids containing three different color pigment particles (such as red, green, and blue) to form microcapsules displaying different colors.
  • a color microcapsule such as red microcapsule
  • the selective ultraviolet light is irradiated through the photomask.
  • the exposure is cured, and then the cured microcapsules are partially removed with a solvent that dissolves the radiation curable material, and the red microcapsules are applied to specific positions of the electrode plates. Repeat the above steps to arrange the green and blue microcapsules regularly at the electrodes. On the board.
  • color display can be realized by adjusting the voltage between the electrode plates. Although a better display effect can be obtained, the microcapsule coating process is complicated, requires repeated exposure, solvent soaking, and has great damage to the microcapsules, and the yield is low.
  • Coloring can be achieved by the technique of coating a color filter on the microcapsule.
  • the light enters and reflects out, it needs to pass through the film twice and pass through the color film and the micro-adhesive film, that is, through the four-layer film, the light loss is large, the light reflectance is reduced to 35%, and even reduced to 20%.
  • the contrast between light and dark is significantly reduced.
  • One of the technical problems to be solved by the embodiments of the present invention is how to improve the light reflectance of a color microcapsule electrophoresis display.
  • One embodiment of the present invention provides a method for preparing a color microcapsule electrophoretic display film by separately preparing different monochromatic microgel films, and then sequentially superposing each monochromatic microcapsule film with a binder. Bonded together, a plurality of film layer units are formed, and the plurality of laminated film layer units are cut in the longitudinal direction perpendicular to the surface to obtain a color microcapsule electrophoretic display film.
  • a method of preparing a color microcapsule electrophoretic display film comprises the steps of:
  • each of the obtained monochromatic electrophoretic dispersion liquids is separately encapsulated into a monochromatic microcapsule display particle;
  • the above-mentioned package may be realized by a complex coacervation method or an in-situ polymerization method;
  • the complex coacervation method refers to the embedding of two oppositely charged wall materials. After the core material is dispersed therein, the two wall materials are interacted by changing the pH, temperature or aqueous solution concentration of the system. The formation of a complex results in a decrease in solubility and agglomeration to form microcapsules.
  • the in-situ polymerization method refers to dehydration of urea and furfural molecules under alkaline conditions to form a water-soluble prepolymer, and then emulsifying and dispersing the electrophoresis liquid in the prepolymer to adjust the pH of the solution to acidity.
  • the prepolymer further removes small molecules (water, etc.) between molecules, forms a water-insoluble polycondensate of a crosslinked three-dimensional network structure, and wraps the core to form a capsule.
  • the microcapsules are arranged in a regular manner, and the thinner the film, the better the thickness, and the preferred thickness is 1-3 microcapsules, and A preferred thickness is one microcapsule particle size.
  • different monochromatic microcapsule electrophoretic display films are superimposed and bonded in order by color, and then the laminate is cut in the longitudinal direction, and the cross-sections are sequentially presented in different colors, which can realize the gel electrophoresis display. Colorization.
  • the longitudinal cutting can make the section regular and achieve the precise technical effect of the alignment.
  • the adhesive may be selected from one of a water-soluble alkyd resin, a water-soluble epoxy ester resin, and an alkyl acrylate copolymer dispersion emulsion.
  • the adhesive may be selected from aqueous or solvent based adhesives including, but not limited to, acrylics (eg, decyl acrylate), waterborne polyurethanes, vinyl acetate resins, or epoxy resins. Type of adhesive.
  • the longitudinally cut size is 1-10 capsule sizes; preferably, the longitudinal cut size is 1-5 capsule sizes; more preferably, the longitudinal cut The cut size is 1-3 microgel size.
  • the microcapsule has a particle diameter of 10 to 100 ⁇ m; preferably, the microcapsule has a particle diameter of 20 to 50 ⁇ m; more preferably, the microcapsule has a particle diameter of 20 to 30 ⁇ m. .
  • Another embodiment of the present invention further provides a method for preparing a color microcapsule electrophoretic display device, the method comprising the steps of: cutting a color microcapsule electrophoresis display film prepared by the above method according to a required size specification; The cut color microcapsule electrophoretic display film is attached to the driving back plate to form a color microcapsule electrophoretic display device.
  • the adhesive is selected from the group consisting of water soluble alkyd resins, water soluble epoxy ester resins, and One of the alkyl acrylate copolymer dispersion emulsions.
  • the binder may be selected from an aqueous binder or a solvent-based binder including, but not limited to, acrylic resins (eg, decyl acrylate), waterborne polyurethanes, vinyl acetate resins, or epoxy resins. Resin adhesive.
  • the longitudinally cut size is 1-10 capsule sizes; preferably, the longitudinal cut size is 1-5 capsule sizes; more preferably, the longitudinal cut The cut size is 1-3 microgel size.
  • the microcapsule has a particle diameter of 10 to 100 ⁇ m; preferably, the microcapsule has a particle diameter of 20 to 50 ⁇ m; more preferably, the microcapsule has a particle diameter of 20 to 30 ⁇ m. .
  • the embodiments of the present invention firstly prepare different monochromatic microcapsule electrophoretic display films, and then superimpose and bond each monochromatic film according to the specifications of the color display, and realize the simple preparation of color micro by means of longitudinal cutting. Capsule electrophoresis shows the technical effect of the membrane. DRAWINGS
  • FIG. 1 is a schematic view of a monochromatic microcapsule electrophoresis display film
  • FIG. 2 is a schematic view showing the bonding of a monochromatic microcapsule electrophoresis display film
  • FIG. 3 is a schematic view of a color micro-adhesive enamel film formed by longitudinally cutting a laminated multi-layer monochromatic microcapsule electrophoresis display film; the monochromatic microcapsule electrophoresis display film to be laminated is longitudinally cut and rotated 90.
  • FIG. 4 is a schematic view of a color microcapsule electrophoretic display device containing a color microcapsule electrophoretic display film.
  • 1. Indicates that the blue microcapsules show particles; 2. Indicates white dotted particles; 3. Indicates that red microcapsules show particles; 4. Indicates that green microcapsules show particles; 5.
  • Red, blue and black microcapsules containing white charged particles were prepared in the same manner as above by using oil-soluble red 101, oil-soluble blue 501 and oil-soluble black 601, respectively.
  • the obtained film unit is cut in the longitudinal direction perpendicular to the horizontal direction (ie, the surface of the film layer),
  • the size of the longitudinal cutting is, for example, 3 capsule diameters.
  • the monochromatic capsule electrophoresis of each color shows that the transverse dimension of the film is, for example, M capsule size.
  • the color microcapsule electrophoresis display film After cutting, it is rotated to obtain a single color microcapsule electrophoresis display film, as shown in Fig. 3.
  • the color microcapsule electrophoresis display film has a thickness of three microgels in the vertical direction in Fig. 3 and N microgel particles in the horizontal direction. Adjacent blue, green, red, and black monochromatic microcapsules, for example, each correspond to one sub-pixel, and generally correspond to one pixel unit.
  • the color microcapsule electrophoretic display film is adhered to the driving back plate 10 containing the circuit device, and the protective film 20 is attached to obtain a color microcapsule electrophoresis display (as shown in Fig. 4).
  • the driving backplane 10 can be prepared by any known method, and the circuit device is, for example, an active driving circuit or a passive driving circuit, and the active driving circuit includes, for example, a thin film transistor (TFT) as a switching element. At this time, it is necessary to align and associate the microcapsules for each sub-pixel with the respective sub-pixel driving circuits on the driving backplane.
  • TFT thin film transistor
  • the protective film 20 is, for example, a glass piece or an organic film, for example, a polyethylene (PE) film, a polypropylene (PP) film, or the like.
  • PE polyethylene
  • PP polypropylene
  • Embodiments of the present invention are not limited to the use of blue, green, red, and black monochromatic microcapsules, and other color schemes may be employed.
  • Another 25ml water add OP10 emulsifier 48mg, sodium dodecyl benzoate 10m g , stir to dissolve, add the electrophoresis suspension prepared in step 1) 3ml, at room temperature After vigorously stirring for 45 min, the emulsion was prepared, and then the prepolymer was added, and the pH was adjusted to 3.5 with a 3% aqueous solution of hydrochloric acid, and then reacted at 70 °C for 5 hours. A diameter of 25 ⁇ 15 ⁇ red microcapsules was obtained.
  • Solvent green 7, oil-soluble blue 122 and oil-soluble black 601 were respectively used to prepare green, blue and black microcapsule-display particles containing white charged particles (titanium dioxide particles) in the same manner as above.
  • the water-soluble epoxy ester resin of the adhesive is mixed with each of the monochromatic microcapsule display particles to obtain a monochromatic microcapsule electrophoretic display film.
  • the thickness of the film in the direction perpendicular to the horizontal direction was 2 microgel particle diameters.
  • a binder aqueous polyurethane to superimpose and bond different monochromatic microcapsule electrophoretic display materials in the order of blue, green, red, and black colors as a film unit, thus repeating multiple steps to form a plurality of layers.
  • a binder aqueous polyurethane to superimpose and bond different monochromatic microcapsule electrophoretic display materials in the order of blue, green, red, and black colors as a film unit, thus repeating multiple steps to form a plurality of layers. (eg N1) film unit.
  • the resulting laminate of the plurality of film layer units was then cut in a direction (longitudinal direction) perpendicular to the surface of the film layer, and the size of the longitudinal cut was 5 microgel particle sizes. After cutting, it is rotated to obtain a color microcapsule electrophoresis display film.
  • the color microcapsule electrophoresis showed that the thickness of the film in the direction perpendicular to the surface thereof was 5 microgel particles, and in the horizontal direction, N1 microgel particles. Adjacent blue, green, red, and black monochromatic microcapsules, for example, each correspond to one sub-pixel, and generally correspond to one pixel unit.
  • the color microcapsule electrophoretic display film is adhered to the driving back plate containing the circuit device, and a protective film is attached to obtain a color microcapsule electrophoresis display.
  • the driving backplane can be prepared by any known method, and the circuit device is, for example, an active driving circuit or a passive driving circuit, and the active driving circuit includes, for example, a thin film transistor as a switching element. At this time, it is necessary to align and associate the microcapsules for the respective sub-pixels with the respective sub-pixel driving circuits on the driving backplane.
  • the protective film is, for example, a glass flake or an organic film, for example, a polyethylene (ruthenium) film, a polypropylene (ruthenium) film, or the like.
  • Embodiments of the present invention are not limited to the use of blue, green, red, and black monochromatic microcapsules, and other color schemes may be employed.
  • the gelatin was cross-linked and stirring was continued for 12 h to obtain black microcapsules containing white charged particles.
  • the microcapsule has a particle size of 30 ⁇ 10 ⁇ m.
  • Red, blue and green microcapsules containing white charged particles were prepared in the same manner as above by using oil-soluble red 0, oil-soluble blue 59 and oil-soluble green 402, respectively.
  • the color microcapsule electrophoresis shows that the thickness of the film in the direction perpendicular to the surface thereof is 3 microcapsules, and in the horizontal direction is 2 microcapsules.
  • the color microcapsule electrophoretic display film is adhered to the driving back plate containing the circuit device, and a protective film is attached to obtain a color microcapsule electrophoresis display.
  • the driving backplane can be prepared by any known method, and the circuit device is, for example, an active driving circuit or a passive driving circuit, and the active driving circuit includes, for example, a thin film transistor as a switching element. At this time, it is necessary to align and associate the microcapsules for each sub-pixel with the respective sub-pixel driving circuits on the driving backplane.
  • the protective film is, for example, a glass flake or an organic film, for example, a polyethylene (PE) film, a polypropylene (PP) film, or the like.
  • PE polyethylene
  • PP polypropylene
  • Embodiments of the present invention are not limited to the use of blue, green, red, and black monochromatic microcapsules, and other color schemes may be employed.
  • the microcapsule particles of the embodiment of the invention are white, and the electrophoretic dispersion liquid is colored, so when the light enters and reflects the film, it only needs to pass through twice, reducing the light loss, and making the color of the film bright, light and dark. High contrast. Therefore, compared with the light source, the color micro-rubber film obtained by the method of the invention does not reduce the light reflectance, or the degree of the reduction is very small, and the display effect is improved; compared with the micro-film which is coated with the color film.
  • the light microcapsule film obtained by the method of the invention has a greatly improved light reflectivity; compared with the photolithography method, the method of the invention is simple, controllable, easy to operate, and avoids light. The etching process repeatedly damages the microcapsules during the etching process.
  • the color microcapsule electrophoretic display film prepared by the method has the advantages of high light reflectivity, wide color contrast, and accurate color alignment. Therefore, the problem of low light reflectance and narrow color contrast of the existing color film microcapsule electrophoretic display device is improved, and at the same time, the process is simple in the preparation process, and industrial production can be realized.

Abstract

一种制备彩色微胶囊电泳显示膜材的方法以及制备含有该彩色微胶囊电泳显示膜材的彩色微胶囊电泳显示器。该制备彩色微胶囊电泳显示膜材的方法包括：分别制备不同单色微胶囊膜材，然后用粘合剂（6）将各单色微胶囊膜材依次叠加粘合在一起，形成多个膜层单元，将层叠的多个膜层单元进行在垂直于表面的纵向上裁切，得到彩色微胶囊电泳显示膜材。该方法制得的彩色微胶囊电泳显示膜材的光反射率高、色彩对比度宽、颜色对位精准。

Description

制备彩色微胶嚢膜材及含有该膜材的显示器件的方法 技术领域
本发明的实施例涉及一种制备彩色微胶嚢电泳显示膜材以及彩色微胶嚢 电泳显示器件的方法。 背景技术
电泳显示技术（EPD ) 由于结合了普通纸张和电子显示器的优点而成为 极具发展潜力的电子显示技术之一。 电泳显示通常是双色显示， 即只能呈现 两种不同的颜色， 如黑 -白、 红-蓝等。 因此， 发展彩色电泳显示技术不仅能 满足人们对彩色化的需求， 而且具有极大的经济效益， 是未来电泳显示一个 必然的发展方向。
目前， 实现电泳显示彩色化的方法包括： 加铺彩色滤光膜、 控制电泳速 度、 增加子像素。
彩色滤光膜法是在双色电泳显示器的上层透明电极板表面再加铺一层彩 色滤光膜来实现彩色显示， 滤光膜之间用黑色间隔防止串色。 虽然这样制成 的彩色电泳显示器件具有较高的分辨率， 但是该方法中彩色滤光膜造成了约 70%的反射光损失， 成像的色饱和度受到很大影响， 在光线弱的环境下， 显 示屏^艮暗。
控制电泳速度法是在透明电泳液中悬浮 3种不同颜色、不同 Zeta电位的 带同种电荷的颜料粒子， 通过施加电压使粒子具有不同的电泳速度， 从而实 现彩色显示。 控制电泳速度法制备彩色显示器的方法比较简便， 但精确控制 3种颜料粒子的 Zeta电位比较困难， 图像难于获得高对比度和光亮度。
子像素法是利用微胶嚢技术对分别含有 3种不同颜色颜料粒子 （如红、 绿和蓝） 的电泳液进行封装， 形成显示不同颜色的微胶嚢。 之后， 以辐射同 化材料为粘合剂， 首先将一种颜色的微胶嚢（如红色微胶嚢）涂布在形成有 电极板的基扳上， 通过光掩膜对其进行选择性紫外光曝光固化， 然后用可溶 解辐射固化材料的溶剂将固化的微胶嚢部分清除， 将红色微胶嚢涂布在电极 板特定的位置。 重复以上步骤就可以使绿色和蓝色微胶嚢规则地排列在电极 板上。 对于所制备的显示器， 通过调节电极板之间的电压， 就可以实现彩色 显示。 虽然可以获得较好的显示效果， 但微胶嚢涂布工艺比较复杂， 需要经 过反复曝光、 溶剂浸泡， 对微胶嚢有很大损伤， 且良率低。
美国专利申请 US 2003 0 021 005公开了带有彩膜的电泳显示器。这种技 术虽然能够实现彩色化， 但是降低了显示器的光反射率， 影响了显示效果。
通过在微胶嚢上铺覆彩膜 ( color filter )的技术手段， 虽然能实现彩色化。 但是， 光在进入、 反射出时需两次透过、 穿出彩膜和微胶嚢， 即要通过四层 膜， 因此光损失较大， 光反射率降低至 35%, 甚至降低到 20%。 当光线弱时， 明暗对比度显著下降。
美国授权专利 US 6 583 780公开了彩色微胶嚢电泳显示器的实施方案。 这种技术主要釆用光刻蚀的手段， 需反复多次进行刻蚀操作， 工艺复杂， 不 易控制， 可操作性不高。 同时， 刻蚀对微胶嚢的损伤较大， 难以保证微胶嚢 的质量和显示器的显示效果。 发明内容
本发明的实施例要解决的技术问题之一是如何提高彩色微胶嚢电泳显示 的光反射率。
本发明的一个实施例提供了一种制备彩色微胶嚢电泳显示膜材的方法， 通过分别制备不同单色微胶嚢膜材， 然后用粘合剂将各单色微胶嚢膜材依次 叠加粘合在一起， 形成多个膜层单元， 将层叠的多个膜层单元进行在垂直于 表面的纵向上裁切， 得到彩色微胶嚢电泳显示膜材。
在本发明的一个实施方案中， 制备彩色微胶嚢电泳显示膜材的方法包括 如下步骤：
1 )分别制备含有白色带电粒子的红色、绿色、蓝色和黑色的单色电泳分 散液；
2 )将得到的各单色电泳分散液分别包裹成单色微胶嚢显示粒子； 例如， 可以釆用复凝聚法或原位聚合法实现上述包裹；
3 )将胶粘剂分别与各单色微胶嚢显示粒子混合，分别制备各单色微胶嚢 电泳显示膜材；
4 )釆用粘合剂将不同单色微胶嚢电泳显示膜材按颜色依次叠加粘合在一 起， 形成层叠的多个膜层单元。
在一个示例中， 复凝聚法是指以两种带相反电荷的壁材物质做包埋物， 芯材分散于其中后， 通过改变体系的 pH值、 温度或水溶液浓度， 使两壁材 相互作用形成一种复合物， 导致溶解度下降而凝聚析出形成微胶嚢。
在一个示例中， 原位聚合法是指在碱性条件下尿素和曱醛分子间脱水形 成溶于水的预聚体， 然后将电泳液在预聚体中乳化分散， 调节溶液 pH至酸 性， 预聚体分子间进一步脱去小分子（水等） ， 形成交联立体网状结构的非 水溶性缩聚物， 并包裹嚢心形成 胶嚢。
在一个示例中，制得的各单色微胶嚢电泳显示膜材中，微胶嚢排列规则， 膜材的厚度越薄越好， 优选的厚度为 1-3个微胶嚢粒径， 更优选的厚度为 1 个微胶嚢粒径。
在一个示例中， 对不同单色微胶嚢电泳显示膜材按颜色依次叠加粘合， 然后将叠层在纵向上裁切后， 断面按规律顺次呈现不同颜色， 能实现 胶嚢 电泳显示的彩色化。 另外， 纵向裁切可以使断面规整， 达到对位精准的技术 效果。
在一个示例中， 所述胶粘剂可以选自水溶性醇酸树脂、 水溶性环氧酯树 脂和丙烯酸烷基酯共聚分散乳液中的一种。
在一个示例中， 所述粘合剂可以选择水性粘合剂或溶剂型粘合剂， 包括 但不限于， 丙烯酸树脂类（如丙烯酸曱酯） 、 水性聚氨酯类、 醋酸乙烯树脂 类或环氧树脂类粘合剂。
在一个示例中， 所述纵向裁切的尺寸为 1-10个 胶嚢粒径； 优选地， 所 述纵向裁切的尺寸为 1-5个 胶嚢粒径； 更优选地， 所述纵向裁切的尺寸为 1-3个微胶嚢粒径。
在一个示例中， 所述微胶嚢的粒径为 10-100μπι; 优选地， 所述微胶嚢的 粒径为 20-50μπι; 更优选地， 所述微胶嚢的粒径为 20-30μπι。
本发明的另一个实施例还提供了一种制备彩色微胶嚢电泳显示器件的方 法， 该方法包括如下步骤： 按照需要的尺寸规格幅面切割上述方法制得的彩 色微胶嚢电泳显示膜材； 将切割后的彩色微胶嚢电泳显示膜材贴合在驱动背 板上制成彩色微胶嚢电泳显示器件。
在一个示例中， 所述胶粘剂选自水溶性醇酸树脂、 水溶性环氧酯树脂和 丙烯酸烷基酯共聚分散乳液中的一种。
在一个示例中， 所述粘合剂可以选自水性粘合剂或溶剂型粘合剂， 包括 但不限于， 丙烯酸树脂类（如丙烯酸曱酯） 、 水性聚氨酯类、 醋酸乙烯树脂 类或环氧树脂类粘合剂。
在一个示例中， 所述纵向裁切的尺寸为 1-10个 胶嚢粒径； 优选地， 所 述纵向裁切的尺寸为 1-5个 胶嚢粒径； 更优选地， 所述纵向裁切的尺寸为 1-3个微胶嚢粒径。
在一个示例中， 所述微胶嚢的粒径为 10-100μπι; 优选地， 所述微胶嚢的 粒径为 20-50μπι; 更优选地， 所述微胶嚢的粒径为 20-30μπι。
本发明的实施例首先分别制备不同单色微胶嚢电泳显示膜材， 然后将各 单色膜材按照彩色显示的规格要求叠加粘合， 通过纵向裁切的技术手段， 达 到了简单制备彩色微胶嚢电泳显示膜材的技术效果。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍， 显而易见地， 下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为单色微胶嚢电泳显示膜材示意图；
图 2为单色微胶嚢电泳显示膜材贴合示意图；
图 3为对贴合的多层单色微胶嚢电泳显示膜材纵向裁切后形成的彩色微 胶嚢膜材示意图； 即将贴合的单色微胶嚢电泳显示膜材纵向裁切后旋转 90。的 示意图；
图 4为含有彩色微胶嚢电泳显示膜材的彩色微胶嚢电泳显示器件示意图。 1、 表示蓝色微胶嚢显示粒子； 2、 表示白色带点粒子； 3、 表示红色微胶 嚢显示粒子； 4、表示绿色微胶嚢显示粒子； 5、表示黑色微胶嚢显示粒子； 6、 表示粘合剂； Μ、 表示单色微胶嚢电泳显示膜材的横向尺寸； Ν、 表示单色 微胶嚢电泳显示膜材的纵向膜层单元数。 Μ和 Ν均为大于 1的整数。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
实施例 1
1 )制备聚苯乙烯包覆的二氧化钛微球
取 2.0克（g )经曱基丙烯酰氧基丙基二曱氧苯硅烷（MPS ) 改性的二氧 化钛（Ti02 )、 50 g无水乙醇、 6 g苯乙烯单体和 0.2 g过氧化苯曱酰（BPO ) 引 发剂， 在氮气（N2 ) 气氛中， 于 78摄氏度（°C )磁力搅拌反应 18小时（h ), 将产物离心干燥后放入曱苯中回流， 离心提取， 反复多次， 直至离心提取液 在 FIR中看不到聚苯己烯的特征吸收， 由此得到聚苯乙烯包覆的二氧化钛微 球。
2 ) 电子墨水微胶嚢的制备
将 0.8 g聚苯二烯包覆二氧化钛微球和 0.08g溶剂绿 3分散于 20毫升（mL ) 四氯二烯和 5mL二曱苯的混合溶剂中， 于 50°C下超声分散 60分钟（min ), 得 到电泳悬浮液。将 30 g电泳悬浮液分散于 100 g水解苯乙烯-马米酸酐共聚物（质 量分数为 3% )溶液中， 保持体系温度 55°C , 搅拌速度为 900转 /分（r/min ) 的 状态下， 加入质量分数为 3%的等量明胶水溶液， 通过加入质量分数为 10%的 醋酸调节 pH值到 4.3, 使之发生复凝聚反应， 将体系温度降至 10°C , 加入质量 分数为 10%的戊二醛水溶液使明胶交联，继续搅拌 10 h得到含有白色带电粒子 的绿色微胶嚢显示粒子。 微胶嚢的粒径为 25±1微米（μπι )。
分别釆用油溶红 101、 油溶蓝 501和油溶黑 601按上述同法制备含有白色带 电粒子（二氧化钛粒子） 的红色、 蓝色和黑色的微胶嚢显示粒子。
3 )将胶粘剂水溶性醇酸树脂分别与各单色微胶嚢显示粒子混合， 分别得 到各单色微胶嚢电泳显示膜材。 如图 1所示， 该膜材在与表面向垂直的方向上 的厚度为 1个微胶嚢粒径。
4 )釆用粘合剂丙烯酸曱酯将不同单色微胶嚢电泳显示膜材在水平方向上 按蓝、 绿、 红、 黑的颜色顺序依次叠加粘合在一起， 以作为一个膜层单元， 如此重复多个步骤共形成 Ν个膜层单元， 如图 2所示。 然后， 在图 2中， 将 所得到的 Ν个膜层单元在与水平方向 （即膜层的表面）垂直的纵向上裁切， 纵向裁切的尺寸例如为 3个 胶嚢粒径。 每种颜色的单色 胶嚢电泳显示膜 材的横向尺寸例如为 M个 胶嚢粒径。
裁切后旋转， 得到单个彩色微胶嚢电泳显示膜材， 如图 3所示。 该彩色 微胶嚢电泳显示膜材在图 3中的垂直方向上的厚度为 3个微胶嚢粒径， 在水 平方向为 N个微胶嚢粒径。 相邻的蓝、 绿、 红、 黑的单色微胶嚢例如各自对 应于一个子像素， 总地对应于一个像素单元。
5 )按照需要的尺寸规格幅面切割步骤 4 )制得的彩色微胶嚢电泳显示膜 材。
6 )切割后的将彩色微胶嚢电泳显示膜材粘附到含有电路装置的驱动背板 10上， 贴上保护膜 20, 得到彩色微胶嚢电泳显示器（如图 4所示）。
驱动背板 10可以釆用任何已知的方法制备， 且该电路装置的例如为有源 驱动电路或无源驱动电路， 有源驱动电路例如包括作为开关元件的薄膜晶体 管 （TFT )。 此时， 需要将用于各子像素的微胶嚢与驱动背板上的各个子像素 驱动电路对齐、 关联。
该保护膜 20例如为玻璃片或有机膜，例如，聚乙烯（PE )膜、聚丙烯 （PP) 膜等。
本发明的实施例不限于仅釆用蓝、 绿、 红、 黑的单色微胶嚢， 还可以釆 用其他配色方案。
实施例 2
1 )制备聚乙烯醇表面修饰的二氧化钛微球
将 100毫克（mg )二氧化钛分散在溶有 35mg聚乙烯醇的 100毫升（ml )水 中， 搅拌 30min, 然后向上述体系中加入 500ml乙醇， 过滤后的溶液緩慢滴加 到 1000ml四氯乙烯中， 使得不溶解于四氯乙烯的聚乙烯醇慢慢包裹在二氧化 钛表面形成修饰层， 产物以沉淀形式析出。 将 0.8 g聚乙烯醇包覆的二氧化钛 微球和 0.08 g溶剂红 149分散于 20mL四氯乙烯和 5mL二曱苯的混合溶剂中，于 50 °C下超声分散 60min, 得到电泳悬浮液。
2 ) 电子墨水微胶嚢的制备
取 0.5g尿素溶解在 1.4ml 37%曱醛水溶液中， 加入三乙醇胺调节 pH=8.5, 80°C下反应 lh制得预聚体。 另取 25ml水， 加入 OP-10乳化剂 48mg, 十二烷基 苯横酸钠 10mg, 搅拌使其溶解， 加入步骤 1 )制得的电泳悬浮液 3ml, 在室温 下剧烈搅拌 45min, 制备成乳液后加入预聚体， 用 3%盐酸水溶液调节 pH值为 3.5 , 再 70士 5°C下反应 3h。 制得直径 25±15μπι红色微胶嚢。
分别釆用溶剂绿 7、 油溶蓝 122和油溶黑 601按上述同法制备含有白色带电 粒子（二氧化钛粒子） 的绿色、 蓝色和黑色的微胶嚢显示粒子。
3 )将胶粘剂水溶性环氧酯树脂分别与各单色微胶嚢显示粒子混合， 分别 得到各单色微胶嚢电泳显示膜材。 该膜材在垂直于水平方向的方向上的厚度 为 2个微胶嚢粒径。
4 )釆用粘合剂水性聚氨酯将不同单色微胶嚢电泳显示膜材按蓝、绿、红、 黑的颜色顺序依次叠加粘合在一起作为一个膜层单元， 如此重复多个步骤形 成多个（例如 N1 )膜层单元。 然后将所得到的多个膜层单元的叠层在垂直于 膜层表面的方向 （纵向）上裁切， 纵向裁切的尺寸为 5个微胶嚢粒径。 裁切 后旋转， 得到彩色微胶嚢电泳显示膜材。 该彩色微胶嚢电泳显示膜材在与其 表面垂直的方向上的厚度为 5个微胶嚢粒径，在水平方向为 N1个微胶嚢粒径。 相邻的蓝、 绿、 红、 黑的单色微胶嚢例如各自对应于一个子像素， 而总地对 应于一个像素单元。
5 )按照需要的尺寸规格幅面切割步骤 4 )制得的彩色微胶嚢电泳显示膜 材。
6 )切割后的将彩色微胶嚢电泳显示膜材粘附到含有电路装置的驱动背板 上， 贴上保护膜， 得到彩色微胶嚢电泳显示器。
驱动背板可以釆用任何已知的方法制备， 且该电路装置的例如为有源驱 动电路或无源驱动电路， 有源驱动电路例如包括作为开关元件的薄膜晶体管。 此时， 需要将用于各子像素的微胶嚢与驱动背板上的各个子像素驱动电路对 齐、 关联。
该保护膜例如为玻璃片或有机膜， 例如， 聚乙烯（ΡΕ )膜、 聚丙烯（ΡΡ) 膜等。
本发明的实施例不限于仅釆用蓝、 绿、 红、 黑的单色微胶嚢， 还可以釆 用其他配色方案。
实施例 3
1 )制备硬脂酸表面修饰的二氧化钛微球
将 50g二氧化钛分散在 200ml重量百分浓度为 3%的硬脂酸的曱苯溶液中， 在 20min内边搅拌边加热至 100°C , 恒温 lh, 趁热过滤， 并用正己烷反复洗涤， 然后在 50 °C的干燥箱中干燥得到修饰后的二氧化钛微球。
2 ) 电子墨水微胶嚢的制备
将 1.0 g经表面修饰后的二氧化钛微球和 0.1 g油溶黑 601分散于 25mL的四 氯二烯和 5mL的二曱苯的混合溶剂中， 于 50°C下超声分散 70min, 得到电泳悬 浮液。 将 30 g电泳悬浮液分散于 100 g水解苯乙烯-马米酸酐共聚物（质量分数 为 3% )溶液中， 保持体系温度 60°C ; 搅拌速度为 900r/min的状态下， 加入质 量分数为 3%的等量明胶水溶液； 通过加入质量分数为 10%醋酸调节 pH值到 4.5, 使之发生复凝聚反应； 将体系温度降至 10°C , 加入质量分数为 10%的戊 二醛水溶液使明胶交联，继续搅拌 12 h得到含有白色带电粒子的黑色微胶嚢显 示粒子。 微胶嚢的粒径为 30±10μπι。
分别釆用油溶红0、 油溶蓝 59和油溶绿 402按上述同法制备含有白色带电 粒子（二氧化钛粒子） 的红色、 蓝色和绿色的微胶嚢显示粒子。
3 )将胶粘剂丙烯酸烷基酯共聚分散乳液分别与各单色微胶嚢显示粒子混 合， 分别得到各单色微胶嚢电泳显示膜材； 该膜材在与表面向垂直的方向上 的厚度为 3个微胶嚢粒径。
4 )釆用粘合剂醋酸乙烯树脂将不同单色微胶嚢电泳显示膜材按蓝、 绿、 红、 黑的颜色顺序依次叠加粘合在一起作为一个膜层单元， 如此重复多个步 骤形成多个（例如 Ν2 )膜层单元， 然后将所得到的多个膜层单元的叠层在垂 直于膜层表面的方向 （纵向）上裁切， 纵向裁切的尺寸为 3个微胶嚢粒径。 裁切后旋转， 得到彩色微胶嚢电泳显示膜材。 该彩色微胶嚢电泳显示膜材在 与其表面垂直的方向上的厚度为 3个微胶嚢粒径，在水平方向为 Ν2个微胶嚢 粒径。 相邻的蓝、 绿、 红、 黑的单色微胶嚢例如各自对应于一个子像素， 而 总地对应于一个像素单元。
5 )按照需要的尺寸规格幅面切割步骤 4 )制得的彩色微胶嚢电泳显示膜 材。
6 )切割后的将彩色微胶嚢电泳显示膜材粘附到含有电路装置的驱动背板 上， 贴上保护膜， 得到彩色微胶嚢电泳显示器。
驱动背板可以釆用任何已知的方法制备， 且该电路装置的例如为有源驱 动电路或无源驱动电路， 有源驱动电路例如包括作为开关元件的薄膜晶体管。 此时， 需要将用于各子像素的微胶嚢与驱动背板上的各个子像素驱动电路对 齐、 关联。
该保护膜例如为玻璃片或有机膜， 例如， 聚乙烯（PE )膜、 聚丙烯（PP) 膜等。
本发明的实施例不限于仅釆用蓝、 绿、 红、 黑的单色微胶嚢， 还可以釆 用其他配色方案。
本发明的实施例的微胶嚢粒子是白色的， 电泳分散液是彩色的， 因此光 进入和反射出膜材时， 只需透过两次， 减少光损失， 使膜材的颜色亮， 明暗 对比度高。 因此， 与光源相比， 本发明的方法得到的彩色微胶嚢膜材不会降 低光反射率， 或者降低的程度非常小， 使显示效果得到改善； 与铺覆彩膜的 微胶嚢相比， 本发明的方法得到的彩色微胶嚢膜材的光反射率会较之有很大 提高； 与光刻蚀的方法相比， 本发明的方法工艺简单、 可控， 易操作， 避免 了光刻蚀过程中反复刻蚀操作对微胶嚢的损伤。
由该方法制得的彩色微胶嚢电泳显示膜材具有光反射率高、 色彩对比度 宽、 颜色对位精准的优点。 从而改善了现有彩膜微胶嚢电泳显示器件的光反 射率低、 色彩对比度窄的问题， 同时， 在制备工艺方面具有工艺简单， 可实 现工业化生产。
对于本领域内的普通技术人员而言， 在不脱离本发明的精神和实质的情 况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims

权利要求书
1、 一种制备彩色微胶嚢电泳显示膜材的方法， 包括：
分别制备不同单色微胶嚢膜材， 然后用粘合剂将各单色微胶嚢膜材依次 叠加粘合在一起， 形成多个膜层单元， 将层叠的多个膜层单元进行在垂直于 表面的纵向上裁切， 得到彩色微胶嚢电泳显示膜材。
2、 根据权利要求 1所述的方法， 包括如下步骤：
1 )分别制备含有白色带电粒子的彩色的单色电泳分散液；
2 )将得到的各单色电泳分散液分别包裹成单色微胶嚢显示粒子； 3 )将胶粘剂分别与各单色微胶嚢显示粒子混合，分别制备各单色微胶嚢 电泳显示膜材；
4 )釆用粘合剂将不同单色微胶嚢电泳显示膜材按颜色依次叠加粘合在一 起， 得到层叠的多个膜层单元。
3、根据权利要求 2所述的方法，其中，所述胶粘剂选自水溶性醇酸树脂、 水溶性环氧酯树脂和丙烯酸烷基酯共聚分散乳液中的一种。
4、根据权利要求 1或 2所述的方法， 其中， 所述粘合剂选自丙烯酸树脂 类、 水性聚氨酯类、 醋酸乙烯树脂类或环氧树脂类粘合剂。
5、 根据权利要求 1-4任一所述的方法， 其中， 所述纵向裁切的尺寸为 1-10个微胶嚢粒径。
6、 根据权利要求 1-5 任一所述的方法， 其中， 所述纵向裁切的尺寸为
1-5个微胶嚢粒径。
7、 根据权利要求 1-6任一所述的方法， 其中， 所述纵向裁切的尺寸为 1-3个微胶嚢粒径。
8、 根据权利要求 1-7 任一所述的方法， 其中， 所述微胶嚢的粒径为 10-100μπι。
9、 根据权利要求 1-8 任一所述的方法， 其中， 所述微胶嚢的粒径为 20-50μπι; 优选地， 所述微胶嚢的粒径为 20-30μπι。
10、 根据权利要求 1-9任一所述的方法， 其中， 所述彩色包括红色、 绿 色、 蓝色和黑色。
11、 一种制备彩色微胶嚢电泳显示器件的方法， 包括如下步骤： 按照需要的尺寸规格幅面切割根据权利要求 1-9任一项所述方法制得的 彩色 胶嚢电泳显示膜材；
将切割后的彩色微胶嚢电泳显示膜材贴合在驱动背板上制成彩色微胶嚢 电泳显示器件。
PCT/CN2012/081361 2011-11-21 2012-09-13 制备彩色微胶囊膜材及含有该膜材的显示器件的方法 WO2013075537A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/700,977 US9079387B2 (en) 2011-11-21 2012-09-13 Method for preparing color microcapsule membrane and display comprising same
JP2014541515A JP6077557B2 (ja) 2011-11-21 2012-09-13 カラーマイクロカプセルフィルム材及び該フィルム材を含む表示装置の製造方法
EP12788102.7A EP2793075B1 (en) 2011-11-21 2012-09-13 Method for preparing colourful microcapsule film and display device comprising same
KR1020127030800A KR101443998B1 (ko) 2011-11-21 2012-09-13 컬러 마이크로캡슐 전기영동 디스플레이 멤브레인 및 이를 포함하는 디스플레이의 제조방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110372085.2A CN102629064B (zh) 2011-11-21 2011-11-21 一种制备彩色微胶囊膜材及含有该膜材的显示器件的方法
CN201110372085.2 2011-11-21

Publications (1)

Publication Number Publication Date
WO2013075537A1 true WO2013075537A1 (zh) 2013-05-30

Family

ID=46587344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/081361 WO2013075537A1 (zh) 2011-11-21 2012-09-13 制备彩色微胶囊膜材及含有该膜材的显示器件的方法

Country Status (6)

Country Link
US (1) US9079387B2 (zh)
EP (1) EP2793075B1 (zh)
JP (1) JP6077557B2 (zh)
KR (1) KR101443998B1 (zh)
CN (1) CN102629064B (zh)
WO (1) WO2013075537A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102629064B (zh) 2011-11-21 2015-03-25 京东方科技集团股份有限公司 一种制备彩色微胶囊膜材及含有该膜材的显示器件的方法
US9084963B2 (en) * 2013-03-13 2015-07-21 Triext, Llc Microencapsulated immobilized liquid membrane for carbon dioxide capture and associated methods
US10378875B2 (en) * 2016-11-07 2019-08-13 Jonathan Cranin Performance gauge for fabric and cushioning material
CN107608121B (zh) 2017-10-13 2020-11-06 京东方科技集团股份有限公司 基板及其制作方法、阵列基板、反射式显示面板和装置
WO2022234518A1 (en) * 2021-05-05 2022-11-10 Halion Displays Inc. Electrophoretic display devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030021005A1 (en) 2001-07-27 2003-01-30 Rong-Chang Liang Electrophoretic display with color filters
US6583780B1 (en) 1999-02-19 2003-06-24 Seiko Epson Corporation Method for producing display panel and display panel
CN201069507Y (zh) * 2007-07-23 2008-06-04 比亚迪股份有限公司 彩色电子纸显示装置
JP2009204793A (ja) * 2008-02-27 2009-09-10 Seiko Epson Corp 電気泳動表示装置の製造方法
JP2009251048A (ja) * 2008-04-01 2009-10-29 Seiko Epson Corp 表示装置、表示装置の製造方法および電子機器
CN102629064A (zh) * 2011-11-21 2012-08-08 京东方科技集团股份有限公司 一种制备彩色微胶囊膜材及含有该膜材的显示器件的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02157803A (ja) * 1988-12-12 1990-06-18 Toyobo Co Ltd ストライプカラーフィルターとその製法
US7110164B2 (en) * 2002-06-10 2006-09-19 E Ink Corporation Electro-optic displays, and processes for the production thereof
JP4579768B2 (ja) * 2004-06-02 2010-11-10 セイコーエプソン株式会社 電気泳動表示用シートの製造方法、電気泳動表示用シートおよびその用途

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6583780B1 (en) 1999-02-19 2003-06-24 Seiko Epson Corporation Method for producing display panel and display panel
US20030021005A1 (en) 2001-07-27 2003-01-30 Rong-Chang Liang Electrophoretic display with color filters
CN201069507Y (zh) * 2007-07-23 2008-06-04 比亚迪股份有限公司 彩色电子纸显示装置
JP2009204793A (ja) * 2008-02-27 2009-09-10 Seiko Epson Corp 電気泳動表示装置の製造方法
JP2009251048A (ja) * 2008-04-01 2009-10-29 Seiko Epson Corp 表示装置、表示装置の製造方法および電子機器
CN102629064A (zh) * 2011-11-21 2012-08-08 京东方科技集团股份有限公司 一种制备彩色微胶囊膜材及含有该膜材的显示器件的方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2793075A4

Also Published As

Publication number Publication date
JP2015503116A (ja) 2015-01-29
US20130206316A1 (en) 2013-08-15
JP6077557B2 (ja) 2017-02-08
EP2793075A1 (en) 2014-10-22
US9079387B2 (en) 2015-07-14
EP2793075A4 (en) 2015-07-08
CN102629064B (zh) 2015-03-25
KR101443998B1 (ko) 2014-09-23
KR20130069645A (ko) 2013-06-26
EP2793075B1 (en) 2018-11-14
CN102629064A (zh) 2012-08-08

Similar Documents

Publication Publication Date Title
JP6577067B2 (ja) 電気泳動粒子およびその生成のためのプロセス
EP2477066B1 (en) Electrophoretic display medium and preparing method thereof
WO2013075537A1 (zh) 制备彩色微胶囊膜材及含有该膜材的显示器件的方法
JP5337694B2 (ja) 電気泳動ディスプレイに使用するための粒子
JP5041788B2 (ja) 複合粒子及びその製造方法
CN108474991A (zh) 用于密封电泳显示器的多羟基组合物
CN103728805A (zh) 显示用颗粒分散液、显示介质和显示装置
JP6552751B2 (ja) 改良された低温電気泳動媒体
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
US7147915B2 (en) Microcapsule and its uses
JP2007065406A (ja) 電気泳動表示装置用粒子、電気泳動表示シート、電気泳動表示装置、電子機器、電気泳動表示装置用粒子の製造方法、電気泳動表示シートの製造方法、電気泳動表示装置の製造方法、および電子機器の製造方法
CN104204931A (zh) 反射型彩色显示器
KR20130030898A (ko) 전기영동 입자, 전기영동 매체, 전기영동 매체의 제조방법, 및 전기영동 표시장치
JP5532717B2 (ja) 表示用粒子分散液、表示媒体、及び表示装置
KR20130109842A (ko) 전기영동 입자, 이를 포함하는 전기영동 소자 및 전기영동 표시장치
CN113637362B (zh) 光固化型液态光子晶体色浆、制备方法及其在构建结构生色膜中的应用
CN100432817C (zh) 电泳粒子的制造方法、电泳分散液、微囊、电泳显示装置和电子机器
US20150323850A1 (en) Method for preparing electrophoretic particles, electrophoretic particles, electrophoretic dispersion, electrophoretic sheet, electrophoretic apparatus, and electronic device
CN110082981A (zh) 一种电泳显示液及电泳显示器
TW201338857A (zh) 用於影像顯示粒子之聚合物分散劑、影像顯示粒子、用於影像顯示粒子之分散液、顯示媒體及顯示裝置
JP5659573B2 (ja) 表示用粒子分散液、表示媒体、及び表示装置
KR101039127B1 (ko) 유동성 입자 조성물 및 이를 이용한 유동성 입자의 제조방법
JP2007191559A (ja) アゾ色素、有機ナノ粒子分散組成物およびそれらを用いたカラーフィルター
KR20130039790A (ko) 전기영동 입자, 전기영동 매체, 전기영동 매체의 제조방법, 및 전기영동 표시장치
JP2002015908A (ja) 磁性粒子および磁気記録媒体

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 20127030800

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2012788102

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 13700977

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2014541515

Country of ref document: JP

Kind code of ref document: A

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

Ref document number: 12788102

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE