WO2014190708A1 - 彩色电泳显示面板及其制造方法、显示装置 - Google Patents

彩色电泳显示面板及其制造方法、显示装置 Download PDF

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WO2014190708A1
WO2014190708A1 PCT/CN2013/088566 CN2013088566W WO2014190708A1 WO 2014190708 A1 WO2014190708 A1 WO 2014190708A1 CN 2013088566 W CN2013088566 W CN 2013088566W WO 2014190708 A1 WO2014190708 A1 WO 2014190708A1
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color
display panel
electrophoretic particles
electrophoretic
common electrode
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English (en)
French (fr)
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李明超
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1679—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
    • G02F1/1681—Gaskets; Spacers; Sealing of cells; Filling or closing of cells having two or more microcells partitioned by walls, e.g. of microcup type
    • 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
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.

Definitions

  • Color electrophoretic display panel manufacturing method thereof, and display device
  • Embodiments of the present invention relate to a color electrophoretic display panel and a method of fabricating the same, and a display device provided with the color electrophoretic display panel. Background technique
  • E-Paper is a display device that is very close to paper. It has the characteristics of free bending, high contrast, high resolution, large viewing angle, low power consumption and low manufacturing cost.
  • the display principle of electronic paper is also different from that of a general flat panel display. Electronic paper does not need to use a backlight, and can reflect an image by reflecting ambient light, and can retain the originally displayed image without power. Therefore, electronic paper is widely used in retail store price tags, digital signage, bus arrival schedules, electronic bulletin boards, mobile phone screens, e-book readers and the like.
  • Electronic paper based on electrophoresis technology is currently the most widely used.
  • the current display mode of electronic paper based on electrophoresis technology can realize full color by color mixing, and the color mixing display mode has mixed color phenomenon, which causes electronic paper to display red, green and blue. color.
  • the color mixing display mode has mixed color phenomenon, which causes electronic paper to display red, green and blue. color.
  • An embodiment of the present invention provides a color electrophoretic display panel, comprising: a plurality of pixel units, each of which includes two or more different color electrophoretic particles, and different threshold voltages for driving electrophoretic particles of different colors.
  • the electrophoretic particles of the two or more different colors include first colored electrophoretic particles, second colored electrophoretic particles, and third colored electrophoretic particles
  • the pixel unit further includes white particles to drive the first colored
  • the threshold voltages of the electrophoretic particles, the second colored electrophoretic particles, and the third colored electrophoretic particles are a first threshold voltage E A , a second threshold voltage E B , and a third threshold voltage E c , respectively .
  • each pixel unit is configured to be capable of applying E 2 And the driving voltage of E 3 , where Ec Ei EB Ez EA E ⁇
  • the pixel unit is configured to have the following driving modes:
  • the pixel unit displays the driving manner of the first color, applying an E 3 voltage to the pixel unit, and applying a voltage to the E 2 voltage;
  • the driving manner of displaying the second color in the pixel unit is: applying an E 2 voltage to the pixel unit, and applying a voltage-Ei voltage;
  • the pixel unit displays a third color by driving a voltage to the pixel unit.
  • the colors of the first colored electrophoretic particles, the second colored electrophoretic particles, and the third colored electrophoretic particles include: red, green, blue, magenta, cyan, or yellow.
  • the color electrophoretic display panel includes:
  • each of the pixel electrodes corresponding to one pixel unit
  • a common electrode disposed on a side of the upper substrate facing the lower substrate;
  • An electrophoretic layer is disposed between the pixel electrode and the common electrode, the electrophoretic layer includes an oil solution, and the two or more different color electrophoretic particles are mixed in the oil solution;
  • the partition wall divides each pixel unit, and separates the electrophoretic layer in each pixel unit area.
  • the color electrophoretic display panel further includes:
  • the black matrix being disposed on the upper substrate corresponding to the position of the partition wall.
  • the material of the common electrode is a transparent conductive polymer material, and the surface of the common electrode is formed with nano gold particles.
  • the material of the partition wall is a polymer material.
  • Another embodiment of the present invention further provides a method for fabricating a color electrophoretic display panel, comprising: forming a plurality of spaced pixel electrodes on a lower substrate;
  • Forming a common electrode on the upper substrate Forming a black matrix and a partition wall on the upper substrate;
  • the upper substrate and the lower substrate are opposed to the cartridge, and a side of the lower substrate forming the pixel electrode faces a side where the upper substrate forms the common electrode.
  • the material of the common electrode is a transparent conductive polymer material
  • the method further comprises: forming nano gold particles on the common electrode.
  • the forming the common electrode on the upper substrate comprises:
  • a voltage of a certain frequency is applied to the polymerizable monomer layer to polymerize the polymerizable monomer to form a conductive polymer layer as a common electrode.
  • the method further includes patterning the conductive polymer layer as a separate common electrode.
  • the forming the nano gold particles on the common electrode comprises: placing an upper substrate formed with a common electrode in a nano gold solution, and the nano gold particles self-assembling on the surface of the conductive polymer material to form Uniformly distributed gold nanoparticle bulges.
  • the forming a plurality of spaced pixel electrodes on the lower substrate comprises: forming a pattern of the first transparent conductive layer on the lower substrate;
  • the insulating layer separating a pattern of the first transparent conductive layer and a pattern of the second transparent conductive layer, a pattern of the first transparent conductive layer And the pattern of the second transparent conductive layer constitutes the plurality of spaced pixel electrodes.
  • a display device comprising the above-described color electrophoretic display panel.
  • each pixel unit is filled with two or more different color electrophoretic particles, and the threshold voltages of the electrophoretic particles driving different colors are different, so that the pixel unit can be applied by An appropriately sized driving voltage suspends the electrophoretic particles of a single color to the upper substrate, so that the pixel unit displays a single color, thereby realizing display of a single color and avoiding color mixing.
  • FIG. 1 is a schematic structural diagram of a color electrophoretic display panel according to an embodiment of the present invention
  • FIG. 2a to FIG. 2e are schematic diagrams showing a working process of a color electrophoretic display panel according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of another embodiment of a color electrophoretic display panel according to an embodiment of the present invention.
  • 4a to 4h are schematic views showing a method of manufacturing a color electrophoretic display panel according to an embodiment of the present invention. detailed description
  • the color electrophoretic display panel provided by the embodiment of the present invention includes: a plurality of pixel units, each of which includes two or more electrophoretic particles of different colors, and the threshold voltages of the electrophoretic particles driving different colors are different.
  • the threshold voltage here is the minimum driving voltage capable of driving the movement of the electrophoretic particles. In the case where the applied driving voltage is less than the threshold voltage, the electrophoretic particles do not move under the influence of the voltage.
  • each pixel unit is filled with two or more different color electrophoretic particles, and the threshold voltages of the electrophoretic particles driving different colors are different, so the pixel unit can be An appropriate size of driving voltage is applied to suspend the electrophoretic particles of a single color to the upper substrate, so that the pixel unit displays a single color, thereby realizing display of a single color and avoiding color mixing.
  • a color electrophoretic display panel provided by an embodiment of the present invention includes a lower substrate 1 , an upper substrate 2 , a pixel electrode 11 , a common electrode 21 , a partition wall 23 , and an electrophoretic layer 3 .
  • a plurality of spaced pixel electrodes 11 are disposed on the lower substrate 1, and each of the pixel electrodes 11 is separated by an insulating layer 12, each The pixel electrode 11 corresponds to one pixel unit.
  • the common electrode 21 is disposed on the upper substrate 2, and the common electrode 21 may be a planar common electrode 21 formed on the upper substrate 2, or may be divided into a plurality of spaced portions, each portion corresponding to one pixel unit.
  • the electrophoretic layer 3 is disposed between the pixel electrode 11 and the common electrode 21.
  • the electrophoretic layer 3 includes an oil solution in which two or more electrophoretic particles of different colors are mixed, and the threshold voltages of the electrophoretic particles that drive different colors are different.
  • a partition wall 23 is further disposed between the lower substrate 1 and the upper substrate 2. The partition wall 23 divides each pixel unit, and separates the electrophoretic layer 3 in each pixel unit region.
  • the material of the partition wall 23 is preferably a polymer material.
  • a black matrix 22 is further disposed on the upper substrate 2, and the black matrix 22 is disposed at a position corresponding to the partition wall 23.
  • the oil solution of the electrophoretic layer 3 is mixed with three different color electrophoretic particles, including the first colored electrophoretic particles, the second colored electrophoretic particles, and the third colored electrophoretic particles.
  • white particles (W) are also mixed in the oil solution.
  • the calculated voltages for driving the first colored electrophoretic particles, the second colored electrophoretic particles, and the third colored electrophoretic particles are a first threshold voltage E A , a second threshold voltage E B , and a third threshold voltage E c , respectively .
  • white particles are non-charged particles, so the movement of white particles is substantially unaffected by the applied electric field.
  • the colors of the first colored electrophoretic particles, the second colored electrophoretic particles, and the third colored electrophoretic particles may include: blue, green, red, magenta, cyan, or yellow.
  • the three colored electrophoretic particles are respectively blue (B), green (G), and red (R) as an example, as shown in FIG.
  • the threshold voltages of the electrophoretic particles that drive blue, green, and red are E b , E g , and E r , respectively, and the white particles are ordinary suspended particles (eg, uncharged particles), and Brownian motion is performed in the oil solution.
  • the threshold voltage E b of the blue electrophoretic particles is the largest, and the threshold voltage E r of the red electrophoretic particles is the smallest, that is, E r ⁇ E g ⁇ E b , according to the threshold values of the three electrophoretic particles.
  • the voltage is supplied with three different driving voltages E 2 and E 3 and meets Er Ei Eg Es EE 3schreib
  • different threshold voltages of the electrophoretic particles of the different colors described above can be achieved by different charge to mass ratios of the electrophoretic particles of different colors.
  • the color electrophoretic display panel displays images as follows:
  • a voltage of size E 3 is first applied to the pixel unit. As shown in FIG. 2a, all the three colored electrophoretic particles are adsorbed on the common electrode 21 of the upper substrate 2, and then The pixel unit applies a voltage having a size of -E 2 , and as shown in FIG. 2b, the red and green electrophoretic particles are adsorbed on the pixel electrode 11 of the lower substrate 1, and only the blue electrophoretic particles remain at the upper substrate 2 at this time. So that the pixel unit displays blue.
  • a voltage of size E 2 is first applied to the pixel unit, and as shown in FIG. 2c, red and green electrophoretic particles are adsorbed on the common electrode 21 of the upper substrate 2, and blue The electrophoretic particles are left at the lower substrate 1, and a voltage of - is applied to the pixel unit. As shown in FIG. 2d, red electrophoretic particles are adsorbed on the pixel electrode 11 of the lower substrate 1, and only green electrophoretic particles are present. It remains at the upper substrate 2, so that the pixel unit displays green.
  • a voltage of a size of 1 is applied to the pixel unit.
  • red electrophoretic particles are adsorbed on the common electrode 21 of the upper substrate 2, and green and blue are The electrophoretic particles are left at the lower substrate 1 so that the pixel unit displays red.
  • each pixel unit is filled with white particles, and red, green, and blue electrophoretic particles, and drives threshold voltages of three kinds of electrophoretic particles of red, green, and blue. Different from each other, it is possible to suspend the electrophoretic particles of a single color to the upper substrate 2 by applying a driving voltage of an appropriate size to the pixel unit, so that the pixel unit displays a single red, green, and blue color, thereby realizing a single color. Display, and avoiding color mixing.
  • the magnitude relationship of the threshold voltages for driving the three electrophoretic particles of red, green, and blue may also vary, such as E b ⁇ E g ⁇ E r and the like.
  • the material of the common electrode 21 is a transparent conductive polymer material, and the surface of the common electrode 21 is further formed with nano gold particles 24, as shown in FIG.
  • the nano gold particles 24 have a good adsorption effect on the electrophoretic particles, so the nano gold particles 24 can better adsorb the electrophoretic particles on the upper substrate 2, improve the stability of the image, and improve the uneven distribution of external stress or electric field. Causes uneven color display.
  • electrophoretic particles are driven at different positions by different threshold voltage levels of the electrophoretic particles of different colors.
  • embodiments of the invention are not limited thereto.
  • electrophoretic particles of different colors may carry different kinds of charges. In one example, some Particles of color have a positive charge, particles of some colors have a negative charge, and electrophoretic particles of different colors with particles of the same charge have different threshold voltages. In this way, color display can also be achieved.
  • the embodiment of the invention further provides a method for manufacturing the color electrophoretic display panel, comprising: S101: forming a plurality of spaced pixel electrodes on a lower substrate.
  • This step can include:
  • a pattern 111 of a first transparent conductive layer is formed on the lower substrate 1.
  • a transparent conductive layer is deposited on the lower substrate 1.
  • the material of the transparent conductive layer is preferably Indium Tin Oxides (ITO), and the pattern 111 of the first transparent conductive layer is formed by a patterning process.
  • a pattern of the insulating layer 12 is formed at the gap of the pattern 111 of the first transparent conductive layer on the lower substrate 1.
  • the insulating film material such as silicon nitride (SiN x), for example, a thickness 3000-400 ⁇ .
  • the insulating layer 12 pattern is formed at the gap of the pattern 111 of the first transparent conductive layer by a patterning process and etching.
  • a pattern 112 of a second transparent conductive layer is formed on the insulating layer 12.
  • the insulating layer 12 separates the pattern 111 of the first transparent conductive layer and the pattern 112 of the second transparent conductive layer, and the first transparent
  • the pattern 111 of the conductive layer and the pattern 112 of the second transparent conductive layer constitute a plurality of spaced pixel electrodes 11.
  • the manner in which the pixel electrodes are formed in the embodiment of the present invention is not limited to the above steps.
  • the solution for forming the electrophoretic layer 3 is spin-coated on the lower substrate on which the pixel electrode is formed, and the solution includes two or more different color electrophoretic particles, such as blue, green, and red.
  • the electrophoretic particles are driven, and the threshold voltages of the electrophoretic particles driving different colors are different.
  • the method for manufacturing the color electrophoretic display panel further includes:
  • a common electrode 21 and a material of the common electrode 21 are formed on the upper substrate 2.
  • the material is, for example, a transparent conductive polymer material.
  • the general formula of the monomer forming the polymer material is
  • RM-[A]-[B] wherein RM is a polymerizable terminal group, A is a rigid structure such as a benzene ring, cyclohexane or the like, and B is an alkyl group.
  • This step can include:
  • a polymerizable monomer is spin-coated on the upper substrate, and a polymerizable monomer having a double bond can be selected as the polymerizable monomer.
  • S2012 A voltage of a certain frequency is applied to the polymerizable monomer to polymerize the polymerizable monomer to form a conductive polymer layer as a common electrode.
  • the network size of the polymer formed by the polymerization of the polymerizable monomer can be controlled by applying a voltage of a certain frequency, thereby affecting the structure of the polymer network. If the electric field frequency is low, the polymerizable monomer diffuses rapidly, the formed polymer polymer network is sparse, the mesh is large, the response speed is slow when used as a common electrode, but the off-state transmittance is high, the threshold voltage And the saturation voltage is small; if the electric field frequency is high, the polymerizable monomer diffuses slowly, the formed polymer network is denser, the mesh is smaller, and the response speed is faster as a common electrode, but the off state is transparent. The rate is low and the threshold voltage and saturation voltage are large. Therefore, the frequency of the electric field applied to the polymerizable monomer should not be too high or too low.
  • the voltage used in the embodiment of the present invention is, for example, 20 V
  • the frequency is, for example, ⁇ -1 kHz
  • the step size is, for example, 200 Hz.
  • the transparent conductive polymer material common electrode may be formed from other processes such as spraying, spin coating, and the like.
  • the material forming the common electrode may also be other transparent conductive materials.
  • S2013 may be further included: as shown in FIG. 4e, a conductive polymer layer is patterned to serve as a separated common electrode 21.
  • the separated common electrode 21 can be formed by a patterning process and etching.
  • step S2013 may not be performed, and a planar common electrode is formed on the upper substrate.
  • a black matrix 22 is formed on the upper substrate 2, and the black matrix 22 corresponds to a space portion between the respective pixel units.
  • a partition wall 23 is deposited and formed on the black matrix 22, and the material of the partition wall 23 is preferably a polymer material. In other embodiments, the partition wall may also be formed on the lower substrate.
  • the method may further include:
  • Nano gold particles 24 are formed on the common electrode 21 as shown in Fig. 4h.
  • the upper substrate 2 on which the common electrode 21 is formed is placed in the nano gold solution, and the time is set to be more than 5 hours, so that the nano gold particles are self-assembled on the surface of the common electrode 21 (conductive polymer material). Moreover, at the network node of the conductive polymer material, the gold nanoparticles are deposited more, thereby forming uniformly distributed nano gold particles 24 bumps.
  • the method for manufacturing the color electrophoretic display panel further includes:
  • the lower substrate and the upper substrate are paired.
  • the side on which the lower substrate is formed with the pixel electrode faces the side on which the upper substrate is formed with the common electrode.
  • the color electrophoretic display panel provided by the embodiment of the present invention can be formed by arranging the upper substrate and the lower substrate in a conventional box-to-box process, as shown in FIG.
  • the embodiment of the present invention further provides a display device, which may be a product or a component having a display function, such as an e-book, a digital signage, or an e-book reader.
  • the display device includes the color electrophoretic display panel provided by the embodiment of the present invention.
  • the display device provided by the embodiment of the present invention has the same technical features as the color electrophoretic display panel provided by the embodiment of the present invention, the same technical effect can be produced and the same technical problem can be solved.

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Abstract

一种彩色电泳显示面板及其制造方法，以及包括该彩色电泳显示面板的显示装置。该彩色电泳显示面板包括多个像素单元，每个像素单元包括两种以上不同颜色的电泳粒子，且驱动不同颜色的电泳粒子的阈值电压不同。该彩色电泳显示面板避免了混色。

Description

彩色电泳显示面板及其制造方法、 显示装置 技术领域
本发明的实施例涉及一种彩色电泳显示面板及其制造方法， 以及设有该 彩色电泳显示面板的显示装置。 背景技术
电子纸（ Electronic Paper, 简称 E-Paper )是一种非常接近纸张的显示装 置， 具有自由弯曲的特性， 还具有对比度高、 分辨率高、 视角大、 功耗小、 制造成本低等优点。 电子纸的显示原理也不同于一般的平板显示器， 电子纸 不需要利用背光源， 可以靠反射环境光来显示图像， 而且在不加电的情况下 也能够保留住原先显示的图像。 因此， 电子纸广泛应用于零售商店价签， 数 字标牌， 公交车到站时间表， 电子公告牌， 手机屏幕， 电子书阅读器等场景。 基于电泳技术的电子紙目前应用最为广泛。
目前的基于电泳技术的电子纸的显示方式可以通过颜色的混配来实现全 色， 而颜色混配的显示方式存在混色的现象，导致电子纸不能 ^艮好的显示红、 绿、 蓝等单色。 为实现彩色电泳显示， 也可以通过单一颜色的电泳显示搭配 彩色滤光片， 但彩色滤光片对光线的吸收作用使电泳显示装置的亮度大大降 低。 发明内容
本发明的一个实施例提供一种彩色电泳显示面板， 包括： 多个像素单元， 每个像素单元包括两种以上不同颜色的电泳粒子， 且驱动不同颜色的电泳粒 子的阈值电压不同。
在一个示例中， 所述两种以上不同颜色的电泳粒子包括第一有色电泳粒 子、 第二有色电泳粒子、 第三有色电泳粒子， 所述像素单元中还包括白色粒 子， 驱动所述第一有色电泳粒子、 第二有色电泳粒子和第三有色电泳粒子的 阈值电压分别为第一阈值电压 EA、 第二阈值电压 EB和第三阈值电压 Ec。
在一个示例中， EC < EB < EA, 各个像素单元被配置为能够施加 E2 和 E3的外加驱动电压， 其中， Ec Ei EB Ez EA E^
在一个示例中， 所述像素单元被配置为具有以下驱动方式：
像素单元显示第一种颜色的驱动方式为， 对像素单元施加 E3电压，再施 力口 -E2电压；
像素单元显示第二种颜色的驱动方式为， 对像素单元施加 E2电压，再施 力口 -Ei电压；
像素单元显示第三种颜色的驱动方式为， 对像素单元施加 电压。 在一个示例中， 所述第一有色电泳粒子、 第二有色电泳粒子和第三有色 电泳粒子的颜色包括： 红色、 绿色、 蓝色、 洋红色、 青色或黄色。
在一个示例中， 所述彩色电泳显示面板包括：
上基板；
与所述上基板相对设置的下基板；
多个间隔的像素电极， 设置在所述下基板的面对所述上基板的一侧， 每 个所述像素电极对应一个像素单元；
公共电极， 设置在所述上基板的面对所述下基板的一侧；
电泳层， 设置于所述像素电极与所述公共电极之间， 所述电泳层包括油 溶液， 所述油溶液中混有所述两种以上不同颜色的电泳粒子；
隔墙， 所述隔墙分割出各个像素单元， 将电泳层分隔在各个像素单元区 域内。
在一个示例中， 所述彩色电泳显示面板还包括：
黑矩阵， 所述黑矩阵设置在上基板上， 对应所述隔墙的位置。
在一个示例中， 所述公共电极的材料为透明导电高分子材料， 所述公共 电极表面形成有纳米金粒子。
在一个示例中， 所述隔墙的材料为高分子材料。
本发明的另一个实施例还提供一种彩色电泳显示面板的制造方法，包括： 在下基板上形成多个间隔的像素电极；
将用于形成电泳层的溶液旋涂于形成有像素电极的下基板上， 所述溶液 包括两种以上不同颜色的电泳粒子， 且驱动不同颜色的电泳粒子的阈值电压 不同；
在上基板上形成公共电极； 在上基板上形成黑矩阵和隔墙；
将上基板和下基板对盒， 且所述下基板形成所述像素电极的一侧与所述 上基板形成所述公共电极的一侧相面对。
在一个示例中， 所述公共电极的材料为透明的导电高分子材料， 所述在 上基板上形成公共电极的步骤之后， 还包括： 在所述公共电极上形成纳米金 粒子。
在一个示例中， 所述在上基板上形成公共电极包括：
在上基板上形成可聚合单体层；
对所述可聚合单体层施加一定频率的电压， 使所述可聚合单体聚合形成 导电高分子层， 作为公共电极。
在一个示例中， 在形成导电高分子层步骤之后， 还包括对导电高分子层 进行图案化工艺， 作为分隔的公共电极。
在一个示例中， 所述在所述公共电极上形成纳米金粒子包括： 将形成有公共电极的上基板置于纳米金溶液中， 纳米金粒子在所述导电 高分子材料表面进行自组装， 形成均匀分布的纳米金粒子凸起。
在一个示例中， 所述在下基板上形成多个间隔的像素电极包括： 在下基板上形成第一透明导电层的图形；
在所述下基板上所述第一透明导电层的图形的间隙处形成绝缘层的图 形；
在所述绝缘层上形成第二透明导电层的图形， 所述绝缘层隔开所述第一 透明导电层的图形和所述第二透明导电层的图形， 所述第一透明导电层的图 形和所述第二透明导电层的图形组成所述多个间隔的像素电极。
本发明的在一个实施例还提供一种显示装置， 该显示装置中包括上述的 彩色电泳显示面板。
本发明所提供的上述技术方案具有如下优点： 每个像素单元中都填充有 两种以上不同颜色的电泳粒子， 并且驱动不同颜色的电泳粒子的阈值电压各 不相同， 所以可以通过对像素单元施加适当大小的驱动电压， 使单独一种颜 色的电泳粒子悬浮至上基板， 使该像素单元显示单一的颜色， 从而实现了单 一颜色的显示， 并且避免了混色现象。 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为本发明的实施例所提供的彩色电泳显示面板的结构示意图； 图 2a至图 2e为本发明的实施例所提供的彩色电泳显示面板的工作过程 的示意图；
图 3为本发明的实施例所提供的彩色电泳显示面板的另一种实施方式的 结构示意图；
图 4a至图 4h为本发明的实施例所提供的彩色电泳显示面板的制造方法 的示意图。 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。
本发明实施例所提供的彩色电泳显示面板， 包括： 多个像素单元， 每个 像素单元包括两种以上不同颜色的电泳粒子， 且驱动不同颜色的电泳粒子的 阈值电压不同。 这里的阈值电压是能够驱动电泳粒子移动的最小驱动电压。 在外加驱动电压小于阈值电压的情况下，电泳粒子在电压的影响下不会移动。
本发明实施例所提供的彩色电泳显示面板中， 每个像素单元中都填充有 两种以上不同颜色的电泳粒子， 并且驱动不同颜色的电泳粒子的阈值电压各 不相同， 所以可以通过对像素单元施加适当大小的驱动电压， 使单独一种颜 色的电泳粒子悬浮至上基板， 使该像素单元显示单一的颜色， 从而实现了单 一颜色的显示， 并且避免了混色现象。
如图 1所示， 本发明实施例所提供的彩色电泳显示面板， 包括下基板 1、 上基板 2、 像素电极 11、 公共电极 21、 隔墙 23和电泳层 3。 多个间隔的像素 电极 11设置在下基板 1上，各个像素电极 11之间通过绝缘层 12隔开，每个 像素电极 11对应一个像素单元。 公共电极 21设置在上基板 2上， 公共电极 21可以是在上基板 2上形成一块平面状的公共电极 21 ,也可以分隔成多个间 隔的部分，每个部分对应一个像素单元。 电泳层 3设置于像素电极 11与公共 电极 21之间。 电泳层 3包括油溶液，油溶液中混有两种以上不同颜色的电泳 粒子， 且驱动不同颜色的电泳粒子的阈值电压不同。 下基板 1与上基板 2之 间还设有隔墙 23, 隔墙 23分割出各个像素单元， 并且将电泳层 3分隔在各 个像素单元区域内， 该隔墙 23的材料优选为高分子材料。 进一步， 上基板 2 上还设置有黑矩阵 22, 黑矩阵 22设置于隔墙 23对应的位置。
本发明实施例中， 电泳层 3的油溶液中混有三种不同颜色的电泳粒子， 包括第一有色电泳粒子、 第二有色电泳粒子、 第三有色电泳粒子。 此外油溶 液中还混有白色粒子 （ W ) 。 驱动第一有色电泳粒子、 第二有色电泳粒子和 第三有色电泳粒子的阐值电压分別为第一阈值电压 EA、 第二阈值电压 EB和 第三阈值电压 Ec。 例如， 白色粒子为非带电粒子， 因此， 白色粒子的移动基 本不会受到外加电场的影响。
例如， 第一有色电泳粒子、 第二有色电泳粒子和第三有色电泳粒子的颜 色可包括： 蓝色、 绿色、 红色、 洋红色、 青色或黄色。 本实施例中， 以三种 有色电泳粒子分别为蓝色 （B ) 、 绿色 （G ) 、 红色 （R ) 为例进行说明， 如 图 1 所示。 驱动蓝色、 绿色和红色的电泳粒子的阈值电压分别为 Eb、 Eg和 Er, 白色粒子为普通悬浮粒子 （例如， 非带电粒子） ， 在油溶液中做布朗运 动。
本实施例中， 以蓝色的电泳粒子的阈值电压 Eb最大， 红色的电泳粒子的 阈值电压 Er最小为例进行说明， 即 Er < Eg < Eb, 根据三种电泳粒子的阈值电 压提供三种大小不同的外加驱动电压 E2、 E3， 并满足 Er Ei Eg Es E E3„
例如， 上述不同颜色的电泳粒子的不同阈值电压可以通过不同颜色的电 泳粒子的不同荷质比来实现。
彩色电泳显示面板显示图像的工作方式如下：
对像素单元施加大小为 -E3的电压， 也就是在像素电极 11与公共电极 21 之间形成大小为 -E3的电场，如图 1所示，将三种彩色电泳粒子全部吸附在像 素电极 21上，使像素单元中的彩色电泳粒子都位于下基板 1处，而显示白色， 作为初始状态。
当某一像素单元需要显示蓝色时， 先对该像素单元施加大小为 E3的电 压， 如图 2a所示， 将三种有色电泳粒子全部吸附在上基板 2的公共电极 21 上， 再对该像素单元施加大小为 -E2的电压， 如图 2b所示， 将红色和绿色的 电泳粒子吸附在下基板 1的像素电极 11上，此时就只有蓝色的电泳粒子留在 上基板 2处， 从而使该像素单元显示蓝色。
当某一像素单元需要显示绿色时， 先对该像素单元施加大小为 E2的电 压， 如图 2c所示， 将红色和绿色的电泳粒子吸附在上基板 2的公共电极 21 上， 而蓝色的电泳粒子留在下基板 1处，再对该像素单元施加大小为 - 的电 压， 如图 2d所示， 将红色的电泳粒子吸附在下基板 1的像素电极 11上， 此 时就只有绿色的电泳粒子留在上基板 2处， 从而使该像素单元显示绿色。
当某一像素单元需要显示红色时，对该像素单元施加大小为 的电压即 可， 如图 2e所示， 将红色的电泳粒子吸附在上基板 2的公共电极 21上， 而 绿色和蓝色的电泳粒子留在下基板 1处， 从而使该像素单元显示红色。
本发明实施例提供的彩色电泳显示面板中， 由于每个像素单元中都填充 有白色粒子， 以及红色、 绿色、 蓝色的电泳粒子， 并且驱动红色、 绿色、 蓝 色三种电泳粒子的阈值电压各不相同， 所以可以通过对像素单元施加适当大 小的驱动电压， 使单独一种颜色的电泳粒子悬浮至上基板 2, 使该像素单元 显示单一的红色、 绿色、 蓝色， 从而实现了单一颜色的显示， 并且避免了混 色现象。
当然， 在其他实施方式中， 驱动红色、 绿色、 蓝色三种电泳粒子的阈值 电压的大小关系也可以有所变化， 例如 Eb < Eg < Er等等。
进一步， 本发明实施例中， 公共电极 21的材料为透明导电高分子材料， 且公共电极 21表面还形成有纳米金粒子 24， 如图 3所示。 纳米金粒子 24对 电泳粒子具有很好的吸附作用，所以纳米金粒子 24能够使电泳粒子更好的吸 附在上基板 2上， 提高了图像的稳定性， 改善了因外界应力或者电场分布不 均导致颜色显示不均的现象。
另外， 需要说明的是， 以上通过不同颜色的电泳粒子的阈值电压大小不 同来实现驱动各种电泳粒子处于不同位置。 然而，本发明实施例并不限于此。 例如， 不同颜色的电泳粒子可以带有不同种类的电荷。 在一个示例中， 某些 颜色的粒子带有正电荷， 某些颜色的粒子带有负电荷， 带有同种电荷的粒子 的不同颜色的电泳粒子的阈值电压大小不同。 以此方式， 也可以实现彩色显 示。
本发明实施例还提供了该彩色电泳显示面板的制造方法， 包括： S101 : 在下基板上形成多个间隔的像素电极。
该步骤可包括：
S1011 : 如图 4a所示， 在下基板 1上形成第一透明导电层的图形 111。 在下基板 1上沉积透明导电层， 该透明导电层的材料优选为铟锡氧化物 ( Indium Tin Oxides, 简称 ITO ) , 通过构图工艺并刻蚀形成第一透明导电 层的图形 111。
S1012: 如图 4b所示， 在下基板 1上的第一透明导电层的图形 111的间 隙处形成绝缘层 12的图形。
在下基板 1上沉积一层绝缘薄膜， 该绝缘薄膜的材料例如为硅的氮化物 ( SiNx ) , 厚度例如为 3000-400θΑ。 通过构图工艺并刻蚀， 在第一透明导电 层的图形 111的间隙处形成绝缘层 12图形。
S1013: 如图 4c所示， 在绝缘层 12上形成第二透明导电层的图形 112, 绝缘层 12隔开第一透明导电层的图形 111和第二透明导电层的图形 112,且 第一透明导电层的图形 111和第二透明导电层的图形 112组成多个间隔的像 素电极 11。
在下基板 1 上沉积第二层透明导电层（ITO ) , 通过构图工艺并刻蚀形 成第二透明导电层的图形 112， 如图 4c所示， 被绝缘层 12隔开的第一透明 导电层的图形 111和第二透明导电层的图形 112组成像素电极 11。
当然， 本发明实施例形成间隔的像素电极的方式并不限于上述步骤。 例 如， 也可以仅仅形成一层透明导电层， 然后通过图案化该透明导电层来形成 多个间隔的像素电极。
S102: 如图 4d所示， 将用于形成电泳层 3的溶液旋涂于形成有像素电 极的下基板上， 该溶液中包括两种以上不同颜色的电泳粒子， 例如蓝色、 绿 色和红色的电泳粒子， 且驱动不同颜色的电泳粒子的阈值电压不同。
该彩色电泳显示面板的制造方法还包括：
S201 : 如图 4e所示， 在上基板 2上形成公共电极 21 , 公共电极 21的材 料例如为透明的导电高分子材料。 形成该高分子材料的单体的通式为
RM-[A]-[B] , 其中 RM为可聚合端基， A为刚性结构， 例如苯环、 环己烷等， B为烷基。
该步骤可以包括：
S2011: 在上基板上形成可聚合单体层。
例如， 在上基板上旋涂可聚合单体， 该可聚合单体可以选用常见的带有 双键的可聚合单体。
S2012: 对可聚合单体施加一定频率的电压， 使可聚合单体聚合形成导 电高分子层， 作为公共电极。
因为电场频率能影响可聚合单体的扩散速度， 所以通过施加一定频率的 电压就可以控制可聚合单体聚合所形成的高分子聚合物的网络尺寸， 从而影 响高分子聚合物的网络的结构。 如果电场频率较低， 则可聚合单体扩散快， 形成的高分子聚合物的网络较稀疏， 网孔较大， 作为公共电极时的响应速度 较慢， 但关态透过率高， 阈值电压和饱和电压较小； 如果电场频率较高， 则 可聚合单体扩散慢， 形成的高分子聚合物网络较致密， 网孔较小， 作为公共 电极时的响应速度较快， 但关态透过率低， 阈值电压和饱和电压较大。 因此， 对可聚合单体施加的电场的频率不能太高， 也不能太低。
本发明实施例中使用的电压例如为 20V, 频率例如为 Ο-lkHz, 步长例如 为 200Hz。
形成透明导电高分子材料公共电极也可以采用其他工艺方法，例如喷涂、 旋涂等。 此外， 形成公共电极的材料也可以为其他的透明导电材料。
进一步， 还可以包括 S2013: 如图 4e所示， 对导电高分子层进行图案化 工艺， 作为分隔的公共电极 21。 具体可通过构图工艺并刻蚀形成分隔的公共 电极 21。
当然， 在其他实施方式中也可以不进行步骤 S2013 , 而在上基板上形成 一块平面状的公共电极。
S202: 如图 4f所示， 在上基板 2上沉积形成黑矩阵 22， 黑矩阵 22对应 各个像素单元之间的间隔部分。
S203: 如图 4g所示， 在黑矩阵 22上沉积并形成隔墙 23, 该隔墙 23的 材料优选为高分子材料。 在其他实施方式中， 隔墙也可以形成于下基板上。 作为一个优选方案， 在步骤 S201之后还可以包括：
S204: 如图 4h所示， 在公共电极 21上形成纳米金粒子 24。
具体的，将形成有公共电极 21的上基板 2置于纳米金溶液中，放置的时 间在 5小时以上， 这样纳米金粒子就会在公共电极 21 (导电高分子材料）表 面进行自組装， 而且在导电高分子材料的网络节点处， 纳米金粒子会较多沉 积， 从而形成均匀分布的纳米金粒子 24凸起。
该彩色电泳显示面板的制造方法还包括：
S3: 将下基板和上基板进行对盒。 例如， 下基板形成有像素电极的一侧 于上基板形成有公共电极的一侧相面对。
通过常规的对盒工艺， 将上基板与下基板对盒， 即可形成本发明实施例 所提供的彩色电泳显示面板， 如图 3所示。
本发明实施例还提供一种显示装置， 可以是电子书、 数字标牌、 电子书 阅读器等具有显示功能的产品或部件， 该显示装置中包括上述本发明实施例 所提供的彩色电泳显示面板。
由于本发明实施例所提供的显示装置与上述本发明实施例所提供的彩色 电泳显示面板具有相同的技术特征， 所以也能产生相同的技术效果， 解决相 同的技术问题。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。

Claims

权利要求书
1、 一种彩色电泳显示面板， 包括： 多个像素单元， 每个像素单元包括两 种以上不同颜色的电泳粒子， 且驱动不同颜色的电泳粒子的阈值电压不同。
2、根据权利要求 1所述的彩色电泳显示面板， 其中， 所述两种以上不同 颜色的电泳粒子包括第一有色电泳粒子、 第二有色电泳粒子、 第三有色电泳 粒子， 所述像素单元中还包括白色粒子， 驱动所述第一有色电泳粒子、 第二 有色电泳粒子和第三有色电泳粒子的阈值电压分别为第一阈值电压 EA、第二 阈值电压 EB和第三阈值电压 Ec。
3、 根据权利要求 2所述的彩色电泳显示面板， 其中， Ec < EB < EA, 各 个像素单元被配置为能够施加 Ε2和 Ε3的外加驱动电压， 其中， Ec
Figure imgf000011_0001
4、根据权利要求 3所述的彩色电泳显示面板， 其中， 所述像素单元被配 置为具有以下驱动方式：
像素单元显示第一种颜色的驱动方式为， 对像素单元施加 E3电压，再施 力口 -E2电压；
像素单元显示第二种颜色的驱动方式为， 对像素单元施加 E2电压，再施 加 -Ei电压；
像素单元显示第三种颜色的驱动方式为， 对像素单元施加 电压。
5、 根据权利要求 2-4任一项所述的彩色电泳显示面板， 其中， 所述第一 有色电泳粒子、 第二有色电泳粒子和第三有色电泳粒子的颜色包括： 红色、 绿色、 蓝色、 洋红色、 青色或黄色。
6、 根据权利要求 1-5任一项所述的彩色电泳显示面板， 其中， 所述彩色 电泳显示面板包括：
上基板；
与所述上基板相对设置的下基板；
多个间隔的像素电极， 设置在所述下基板的面对所述上基板的一侧， 每 个所述像素电极对应一个像素单元；
公共电极， 设置在所述上基板的面对所述下基板的一侧；
电泳层， 设置于所述像素电极与所述公共电极之间， 所述电泳层包括油 溶液， 所述油溶液中混有所述两种以上不同颜色的电泳粒子； 隔墙， 所述隔墙分割出各个像素单元， 将电泳层分隔在各个像素单元区 域内。
7、根据权利要求 6所述的彩色电泳显示面板， 其中， 所述彩色电泳显示 面板还包括：
黑矩阵， 所述黑矩阵设置在上基板上， 对应所述隔墙的位置。
8、根据权利要求 6或 7所述的彩色电泳显示面板， 其中， 所述公共电极 的材料为透明导电高分子材料， 所述公共电极表面形成有纳米金粒子。
9、 根据权利要求 6-8任一项所述的彩色电泳显示面板， 其中， 所述隔墙 的材料为高分子材料。
10、 一种彩色电泳显示面板的制造方法， 包括：
在下基板上形成多个间隔的像素电极；
将用于形成电泳层的溶液旋涂于形成有像素电极的下基板上， 所述溶液 包括两种以上不同颜色的电泳粒子， 且驱动不同颜色的电泳粒子的阈值电压 不同；
在上基板上形成公共电极；
在上基板上形成黑矩阵和隔墙；
将上基板和下基板对盒， 且所述下基板形成所述像素电极的一侧与所述 上基板形成所述公共电极的一侧相面对。
11、根据权利要求 10所述的制造方法， 其中， 所述公共电极的材料为透 明的导电高分子材料， 所述在上基板上形成公共电极的步骤之后， 还包括： 在所述公共电极上形成纳米金粒子。
12、 根据权利要求 10或 11所述的制造方法， 其中， 所述在上基板上形 成公共电极包括：
在上基板上形成可聚合单体层；
对所述可聚合单体层施加一定频率的电压， 使所述可聚合单体聚合形成 导电高分子层， 作为公共电极。
13、根据权利要求 12所述的制造方法， 其中， 在形成导电高分子层步骤 之后， 还包括对导电高分子层进行图案化工艺， 作为分隔的公共电极。
14、根据权利要求 11所述的制造方法， 其中， 所述在所述公共电极上形 成纳米金粒子包括：
将形成有公共电极的上基板置于纳米金溶液中， 纳米金粒子在所述导电 高分子材料表面进行自组装， 形成均匀分布的纳米金粒子凸起。
15、 根据权利要求 10-14任一项所述的制造方法， 其中， 所述在下基板 上形成多个间隔的像素电极包括：
在下基板上形成第一透明导电层的图形；
在所述下基板上所述第一透明导电层的图形的间隙处形成绝缘层的图 形；
在所述绝缘层上形成第二透明导电层的图形， 所述绝缘层隔开所述第一 透明导电层的图形和所述第二透明导电层的图形， 所述第一透明导电层的图 形和所述第二透明导电层的图形组成所述多个间隔的像素电极。
16、 一种显示装置， 包括权利要求 1至 9任一项所述的彩色电泳显示面 板。
PCT/CN2013/088566 2013-05-30 2013-12-05 彩色电泳显示面板及其制造方法、显示装置 Ceased WO2014190708A1 (zh)

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