CN112904638A - Electrophoretic display and preparation method thereof - Google Patents
Electrophoretic display and preparation method thereof Download PDFInfo
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- CN112904638A CN112904638A CN201911220399.3A CN201911220399A CN112904638A CN 112904638 A CN112904638 A CN 112904638A CN 201911220399 A CN201911220399 A CN 201911220399A CN 112904638 A CN112904638 A CN 112904638A
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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
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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
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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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
- G02F1/1675—Constructional details
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
Abstract
The invention relates to an electrophoretic display, comprising a driving electrode layer, an electrophoretic display layer, a hydrophobic material layer and a common electrode layer, wherein the electrophoretic display layer is positioned between the driving electrode layer and the common electrode layer, one of the driving electrode layer and the common electrode layer is positioned at the observation side of the electrophoretic display layer and is made of a transparent material, the other of the driving electrode layer and the common electrode layer is positioned at the other side of the electrophoretic display layer opposite to the observation side, the electrophoretic display layer comprises a display medium, and the display medium comprises electrophoretic liquid and electrophoretic particles; -a layer of hydrophobic material is arranged between the drive electrode layer and the electrophoretic display layer; and/or a hydrophobic material layer is arranged between the electrophoresis display layer and the common electrode layer; the hydrophobic material layer is in direct contact with the electrophoretic fluid; the electrophoretic display can effectively avoid the problem of display particle agglomeration, so that the display effect is better.
Description
Technical Field
The invention relates to the field of electrophoretic displays, in particular to an electrophoretic display and a preparation method thereof.
Background
Electronic paper, also called digital paper. It is an ultra-thin, ultra-light display screen, i.e. understood as a "paper-like thin, flexible, erasable electrophoretic display". The approaches for implementing the electronic paper technology mainly include a cholesteric liquid crystal display technology, an electrophoretic display technology (EPD) and an electrowetting display technology. The electronic paper display device is light and thin, low in power consumption, simple in process and good in flexibility.
In the conventional electronic paper electrophoretic display, display particles in an electrophoretic display layer are easy to agglomerate on electrodes on two sides, the particles are insufficient in electric field motion, and the display effect is poor.
Disclosure of Invention
Accordingly, there is a need for an electrophoretic display with good display effect and a method for manufacturing the same.
The invention provides an electrophoretic display, which comprises a driving electrode layer, an electrophoretic display layer, a hydrophobic material layer and a common electrode layer, wherein the electrophoretic display layer is positioned between the driving electrode layer and the common electrode layer, one of the driving electrode layer and the common electrode layer is positioned on the observation side of the electrophoretic display layer and is made of a transparent material, the other of the driving electrode layer and the common electrode layer is positioned on the other side of the electrophoretic display layer opposite to the observation side, the electrophoretic display layer comprises a display medium, and the display medium comprises electrophoretic liquid and electrophoretic particles;
a hydrophobic material layer is arranged between the driving electrode layer and the electrophoresis display layer; and/or the presence of a gas in the gas,
a hydrophobic material layer is arranged between the electrophoresis display layer and the common electrode layer;
the hydrophobic material layer is in direct contact with the electrophoretic fluid.
Preferably, the thickness of the hydrophobic material layer is 0.1-5 μm, preferably 0.2-1 μm.
Preferably, the hydrophobic material layer is a siloxane compound, and the chemical structural formula of the siloxane compound is as follows:
wherein, the groups R1, R2, R3 and R4 in the siloxane compound are any alkyl.
Preferably, the hydrophobic material layer is a fluorosilane compound, and the chemical structural formula of the fluorosilane compound is as follows:
wherein, the groups R1, R2 and R3 in the fluorosilane compound are any alkyl groups, and Rf is a fluoroalkyl group.
Preferably, the hydrophobic material layer is heptadecafluorodecyltriethoxysilane.
Preferably, the electrophoretic display layer further includes a curing medium, the curing medium surrounds an accommodating space in the electrophoretic display layer, the display medium is filled in the accommodating space, the upper end and the lower end of the accommodating space are open, one end of the upper end and the lower end faces the common electrode layer, the other end of the upper end and the lower end faces the driving electrode layer, and the upper end and/or the lower end of the accommodating space is closed by the hydrophobic material layer.
Preferably, the solidified medium is partitioned into a plurality of continuous accommodating spaces in the electrophoretic display layer, and projections of the accommodating spaces on the common electrode layer are circular or polygonal.
Preferably, electrophoretic display still includes the color filter layer, the hydrophobic material layer includes first hydrophobic material layer and second hydrophobic material layer, drive electrode layer, first hydrophobic material layer, electrophoretic display layer, second hydrophobic material layer, public electrode layer and color filter layer from the bottom up superpose in proper order.
The invention also provides a preparation method of the electrophoretic display, which comprises the following steps:
providing a driving electrode layer and a common electrode layer;
forming an accommodating space on one of the driving electrode layer and the common electrode layer;
filling a display medium in the accommodating space to form an electrophoretic display layer, wherein the display medium comprises electrophoretic liquid and electrophoretic particles;
covering the other one of the driving electrode layer and the common electrode layer on the electrophoresis display layer to seal the accommodating space;
also comprises the following steps:
coating a hydrophobic material layer on the driving electrode layer and/or the common electrode layer, wherein the hydrophobic material layer is positioned between the electrophoretic display layer and the driving electrode layer, and/or
The hydrophobic material layer is positioned between the electrophoresis display layer and the common electrode layer;
the electrophoretic fluid is in direct contact with the hydrophobic material layer.
Preferably, before the accommodating space is formed on one of the driving electrode layer and/or the common electrode layer, a hydrophobic material layer is formed on the upper portion of the driving electrode layer and/or the common electrode layer; alternatively, the first and second electrodes may be,
after an accommodating space is formed on one of the driving electrode layer and/or the common electrode layer, and before a display medium is filled, a hydrophobic material layer is formed in the accommodating space.
According to the electrophoretic display and the preparation method thereof, the hydrophobic material layers are additionally arranged on the two sides of the electrophoretic display layer, so that the problem of agglomeration of display particles on the electrodes on the two sides is solved, and the display effect is better.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic view of an electrophoretic display according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electrophoretic display according to another preferred embodiment of the present invention;
fig. 3 and 4 are schematic structural views of an electrophoretic display according to other preferred embodiments of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and specific embodiments for the purpose of better understanding and enabling those skilled in the art to practice the present invention, which are not intended to limit the present invention.
Referring to fig. 1-5, an electrophoretic display according to an embodiment of the present invention includes a driving electrode layer 1, an electrophoretic display layer 3, hydrophobic material layers 2 and/or 4, and a common electrode layer 5. The electrophoretic display layer 3 is located between the drive electrode layer 1 and the common electrode layer 5. One of the driving electrode layer 1 and the common electrode layer 3 is located at a viewing side of the electrophoretic display layer 3 and is made of a transparent material, and the other of the driving electrode layer 1 and the common electrode layer 5 is located at the other side of the electrophoretic display layer 3 opposite to the viewing side. Referring to fig. 5, the electrophoretic display layer 3 includes a display medium 32, the display medium 32 includes an electrophoretic fluid and display particles distributed in the electrophoretic fluid, the hydrophobic material 2 and/or 4 is in direct contact with the display medium 32, and the hydrophobic material 2 and/or 4 has a property of repelling the electrophoretic fluid, so as to prevent the electrophoretic fluid and the electrophoretic particles from agglomerating near the driving electrode layer 1 and/or the common electrode layer 5. A hydrophobic material layer is arranged between the driving electrode layer 1 and the electrophoresis display layer 3; and/or a hydrophobic material layer is also arranged between the electrophoretic display layer 3 and the common electrode layer 5. The hydrophobic material layer 2 or 4 is in direct contact with the electrophoresis liquid, and the driving electrode layer 1 and the common electrode layer 5 are both provided with the hydrophobic material layers, so that the anti-agglomeration effect is better. If no hydrophobic material layer is arranged, electrophoretic particles in the electrophoretic display layer 3 are easy to agglomerate at positions close to the common electrode layer 5 and the driving electrode layer 1, the display particles in the electrophoretic display layer 3 are blocked when moving in an electrophoretic solution, and the movement of the display particles is insufficient under the action of an electric field; the added hydrophobic material layer can prevent the particles from agglomerating to the positions close to the common electrode layer 5 and the driving electrode layer 1, the particles move more fully under the action of an electric field, the reflectivity and the contrast of the electrophoretic display are better, and the display effect is effectively improved.
Referring to fig. 1 to 4, the principle of electrophoretic display is realized by transmitting the reflected light of the electrophoretic particles to the eyes of people, but the reflectivity and the color contrast of the clustered electrophoretic particles are affected, which seriously affects the display effect, and the arrangement of the hydrophobic material layers 2 and/or 4 just solves the problem.
In a preferred embodiment, a color filter layer 6 is further provided on the common electrode layer 5, and the color filter layer 6 is made of a color resist material composed of a resin, a solvent, and a photosensitizer. The light reflected by the electrophoretic particles passes through the color filter layer 6 and then displays different colors, so that color display is realized, the agglomeration phenomenon has larger influence on the color contrast of the color electrophoretic display, and the display effect is poorer.
The electrophoretic display layer 3 further includes a curing medium 31, the curing medium surrounds an accommodating space in the electrophoretic display layer 3, the display medium 32 is filled in the accommodating space, the upper and lower ends of the accommodating space are open, one end of the upper and lower ends faces the common electrode layer, the other end of the upper and lower ends faces the driving electrode layer, and the upper end and/or the lower end of the accommodating space are closed by the hydrophobic material layer. The bottom of the accommodating space is in contact with the hydrophobic material layer on the driving electrode layer 1, and the upper part of the accommodating space is in contact with the hydrophobic material layer on the common electrode layer 5, so that the purpose that the upper surface and the lower surface of the display medium 32 are in direct contact with the hydrophobic material layers 2 and/or 4 is achieved, and the display effect is better. Further, the solidified medium is separated into a plurality of continuous accommodating spaces in the electrophoretic display layer, and the accommodating spaces can be polygonal, circular or irregular. In addition, the accommodation spaces can be provided with a plurality of accommodation spaces and also can be provided with one accommodation space, the plurality of accommodation spaces can form different patterns according to different colors, and the color of the electrophoretic display can be changed by arranging one accommodation space.
In a preferred embodiment, the thickness of the layer of hydrophobic material 2 and/or 4 is 0.1-5 μm, preferably 0.2-1 μm, in particular the thickness of the layer of hydrophobic material is 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm or 0.9 μm.
In a preferred embodiment, the hydrophobic material layer 2 and/or 4 is a siloxane compound having the chemical formula:
wherein, the groups R1, R2, R3 and R4 in the siloxane compounds are any alkyl groups, such as methyl CH3-, ethyl CH3CH2-, CH3CH2CH 2-propyl and (CH3)2 CH-isopropyl, etc.
In a preferred embodiment, the hydrophobic material layer 2 and/or 4 is a fluorosilane compound, and the chemical structural formula of the fluorosilane compound is as follows:
wherein, the groups R1, R2 and R3 in the fluorosilane compound are any alkyl groups, such as methyl CH3-, ethyl CH3CH2-, CH3CH2CH 2-propyl and (CH3)2 CH-isopropyl, and Rf is fluoroalkyl.
In a preferred embodiment, the layer of hydrophobic material 2 and/or 4 is heptadecafluorodecyltriethoxysilane.
Referring to fig. 4, in a preferred embodiment, the electrophoretic display further includes a color filter layer 6, the hydrophobic material layers include a first hydrophobic material layer 2 and a second hydrophobic material layer 4, and the driving electrode layer 1, the first hydrophobic material layer 2, the electrophoretic display layer 3, the second hydrophobic material layer 4, the common electrode layer 5, and the color filter layer 6 are sequentially stacked from bottom to top. In the present application, the terms "up" and "down" refer to the side close to the eyes of the user as "up" and the side away from the eyes of the user as "down".
In a preferred embodiment, the first hydrophobic material layer 2 is coated on the lower surface of the common electrode layer 5; the second hydrophobic material layer 4 is coated on the upper surface of the driving electrode layer 1. The first hydrophobic material layer 2 is coated on the driving electrode layer 1, and then the electrophoretic display layer 3 is manufactured on the first hydrophobic material layer 2, because the driving electrode layer 1 is a hard plate, the manufacturing of the electrophoretic display layer 3 on the upper part is more convenient, and the process is simpler.
In another preferred embodiment, the color filter layer 6 may be a layer of soft color display material, and may further include a substrate 7 bonded to the soft color display material, the color filter layer 6 is formed on the substrate 7, the common electrode layer 5 is formed on the color filter layer 6, the second hydrophobic material layer 4 is coated on the common electrode layer 5, and finally the driving electrode layer 1 is attached to the electrophoretic display layer 3 to form a complete electrophoretic display. In this embodiment, the manufactured electrophoretic display may include the substrate 7, and the substrate 7 becomes a part of the electrophoretic display, so that the structure is more stable, but the realistic effect of the electrophoretic display may be affected to some extent; of course, the substrate 7 may be removed to improve the display effect.
The invention also provides a preparation method of the electrophoretic display, which comprises the following steps: plating a common electrode layer 5, such as ITO, on the substrate 7; coating a hydrophobic material layer on the driving electrode layer 1; the driving electrode layer 1 and the substrate 7 are respectively attached and fixed on two opposite surfaces of the electrophoretic display layer 3.
The invention also provides a preparation method of the electrophoretic display, which comprises the following steps: plating a common electrode layer 5 on a substrate 7; coating a hydrophobic material layer on the common electrode layer 5; the driving electrode layer 1 and the substrate 7 are respectively attached and fixed on two opposite surfaces of the electrophoretic display layer 3.
The invention also provides a preparation method of the electrophoretic display, which comprises the following steps:
providing a driving electrode layer 1 and a common electrode layer 5;
forming an accommodating space on one of the driving electrode layer 1 and the common electrode layer 5;
filling a display medium in the accommodating space to form an electrophoretic display layer 3, wherein the display medium comprises electrophoretic liquid and electrophoretic particles;
the solidified medium surrounds an accommodating space in the electrophoretic display layer 3, the display medium 32 is filled in the accommodating space, the upper end and the lower end of the accommodating space are open, one end of the upper end and the lower end faces the common electrode layer 5, the other end of the upper end and the lower end faces the driving electrode layer 1, and the upper end and/or the lower end of the accommodating space are/is sealed by the hydrophobic material layers 2 and/or 4.
Covering the other one of the driving electrode layer 1 and the common electrode layer 5 on the electrophoretic display layer 3 to seal the accommodating space;
also comprises the following steps:
coating a hydrophobic material layer 2 and/or 4 on one or both of the driving electrode layer 1 and the common electrode layer 5; the hydrophobic material layer 2 and/or 4 is positioned between the electrophoretic display layer 3 and the driving electrode layer 1, and the hydrophobic material layer is positioned between the electrophoretic display layer 3 and the common electrode layer 5;
the electrophoretic fluid is in direct contact with the hydrophobic material layers 2 and/or 4.
In a preferred embodiment, the hydrophobic material layer 2 and/or 4 is formed on the upper portion of the driving electrode layer 1 and/or the common electrode layer 5 before the accommodating space is formed on one of the two layers.
Specifically, a common electrode layer 5 is plated on a substrate 7; respectively coating a hydrophobic material layer on the common electrode layer 5 and the driving electrode layer 1; the driving electrode layer 1 and the substrate 7 are respectively attached and fixed on two opposite surfaces of the electrophoretic display layer 3. Since the driving electrode layer 1 is relatively hard, when an electrophoretic display is manufactured, a hydrophobic material is coated on the driving back plate to form a first hydrophobic material layer 2, then a curing medium 31 is arranged on the hydrophobic material layer, a display medium 32 is coated in the curing medium 31, and finally the common electrode layer 5 which is also coated with the hydrophobic material layer is attached to the other side surface of the electrophoretic display layer 3. Of course, the hydrophobic material layer may be coated on the common electrode layer 5, and then the accommodating space may be formed thereon. Before the common electrode layer 5 is plated on the substrate 7, the color filter layer 6 is prepared on the substrate 7 by a yellow light process.
After the driving electrode layer 1 and the substrate 7 are respectively attached and fixed on two opposite surfaces of the electrophoretic display layer 3, the substrate 7 is separated from the color filter layer 6 or the common electrode layer 5 and is taken down. The substrate 7 is removed from the common electrode layer 5 or the color filter layer 5, so that the light transmittance of the electrophoretic display can be improved and the display effect of the electrophoretic display can be better.
In another preferred embodiment, after the accommodating space is formed on one of the driving electrode layer and/or the common electrode layer, and before the display medium is filled, a hydrophobic material layer is formed in the accommodating space.
Specifically, a common electrode layer 5 is plated on a substrate 7; forming an accommodating space on one of the common electrode layer 5 and the driving electrode layer 1, then coating a hydrophobic material layer in the accommodating space, and refilling a display medium; and forming a hydrophobic material layer on the other of the common electrode layer 5 and the driving electrode layer 1, and attaching and fixing the driving electrode layer 1 and the substrate 7 on two opposite surfaces of the electrophoretic display layer 3 respectively.
According to the electrophoretic display and the preparation method thereof, the hydrophobic material layers are additionally arranged on the two sides of the electrophoretic display layer, so that the problem of agglomeration of display particles on the electrodes on the two sides is solved, and the display effect is better.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An electrophoretic display, comprising a driving electrode layer, an electrophoretic display layer, a hydrophobic material layer and a common electrode layer, wherein the electrophoretic display layer is located between the driving electrode layer and the common electrode layer, one of the driving electrode layer and the common electrode layer is located at a viewing side of the electrophoretic display layer and is made of a transparent material, the other of the driving electrode layer and the common electrode layer is located at the other side of the electrophoretic display layer opposite to the viewing side, the electrophoretic display layer comprises a display medium, and the display medium comprises an electrophoretic liquid and electrophoretic particles;
a hydrophobic material layer is arranged between the driving electrode layer and the electrophoresis display layer; and/or the presence of a gas in the gas,
a hydrophobic material layer is arranged between the electrophoresis display layer and the common electrode layer;
the hydrophobic material layer is in direct contact with the electrophoretic fluid.
2. An electrophoretic display as claimed in claim 1, wherein the layer of hydrophobic material has a thickness of 0.1 to 5 μm, preferably 0.2 to 1 μm.
3. The electrophoretic display of claim 1, wherein the hydrophobic material layer is a siloxane compound having a chemical formula:
wherein, the groups R1, R2, R3 and R4 in the siloxane compound are any alkyl.
4. The electrophoretic display of claim 1, wherein the hydrophobic material layer is a fluorosilane compound, and the fluorosilane compound has a chemical structural formula:
wherein, the groups R1, R2 and R3 in the fluorosilane compound are any alkyl groups, and Rf is a fluoroalkyl group.
5. The electrophoretic display of claim 1, wherein the layer of hydrophobic material is heptadecafluorodecyltriethoxysilane.
6. The electrophoretic display device of claim 1, wherein the electrophoretic display layer further comprises a curing medium, the curing medium surrounds an accommodating space in the electrophoretic display layer, the display medium is filled in the accommodating space, the upper end and the lower end of the accommodating space are open, one end of the upper end and the lower end faces the common electrode layer, the other end of the upper end and the lower end faces the driving electrode layer, and the upper end and/or the lower end of the accommodating space is closed by the hydrophobic material layer.
7. The electrophoretic display of claim 6, wherein the curing medium is partitioned into a plurality of continuous accommodating spaces in the electrophoretic display layer, and projections of the accommodating spaces on the common electrode layer are circular or polygonal.
8. The electrophoretic display device of claim 1, wherein the electrophoretic display device further comprises a color filter layer, the hydrophobic material layers comprise a first hydrophobic material layer and a second hydrophobic material layer, and the driving electrode layer, the first hydrophobic material layer, the electrophoretic display layer, the second hydrophobic material layer, the common electrode layer and the color filter layer are sequentially stacked from bottom to top.
9. A method for preparing an electrophoretic display comprises the following steps:
providing a driving electrode layer and a common electrode layer;
forming an accommodating space on one of the driving electrode layer and the common electrode layer;
filling a display medium in the accommodating space to form an electrophoretic display layer, wherein the display medium comprises electrophoretic liquid and electrophoretic particles;
covering the other one of the driving electrode layer and the common electrode layer on the electrophoresis display layer to seal the accommodating space;
it is characterized by also comprising the following steps:
coating a hydrophobic material layer on the driving electrode layer and/or the common electrode layer, wherein the hydrophobic material layer is positioned between the electrophoretic display layer and the driving electrode layer, and/or
The hydrophobic material layer is positioned between the electrophoresis display layer and the common electrode layer;
the electrophoretic fluid is in direct contact with the hydrophobic material layer.
10. A method for preparing an electrophoretic display as claimed in claim 9, wherein a hydrophobic material layer is formed on one of the driving electrode layer and/or the common electrode layer before the accommodating space is formed thereon; alternatively, the first and second electrodes may be,
after an accommodating space is formed on one of the driving electrode layer and/or the common electrode layer, and before a display medium is filled, a hydrophobic material layer is formed in the accommodating space.
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