KR20170112128A - Film for Electrophoretic Display Device and Electrophoretic Display Device - Google Patents

Abstract

An embodiment of the present invention discloses a film for an electrophoretic display device and an electrophoretic display device using the same.
A film for an electrophoretic display device according to an embodiment of the present invention includes: a base film; A transparent electrode layer on the first side of the base film; A barrier layer on a second side opposite to the first side of the base film; And a coating layer on the barrier layer.

Description

Technical Field [0001] The present invention relates to a film for an electrophoretic display device and an electrophoretic display device using the same,

Embodiments of the present invention relate to an electrophoretic display film, an electrophoretic display device, and a method of manufacturing the same.

Electrophoretic display devices are widely used in various fields such as electronic books, mobile displays, and outdoor displays, because they have advantages of excellent outdoor visibility and excellent low power characteristics.

The electrophoretic display device requires a two-step lamination process in which the backplane and the upper substrate layer are first coupled to each other and then the protective layer is secondarily bonded to the upper substrate layer. Thus, the process is complicated and the raw material of the release film Cost and process cost are high. Also, the defective rate is high due to the pressure applied during raw material processing and multiple lamination processes.

Embodiments of the present invention provide a film for an electrophoretic display device and a electrophoretic display device using the same, which can reduce a defective rate while lowering a raw material cost and a process cost.

A film for an electrophoretic display device according to an embodiment of the present invention includes: a base film; A transparent electrode layer on the first side of the base film; A barrier layer on a second side opposite to the first side of the base film; And a coating layer on the barrier layer.

Wherein the film for electrophoretic display comprises: a cell layer on the transparent electrode layer; And an adhesive layer on the cell layer.

The cell layer may comprise microcapsules comprising a fluid and a plurality of charged particles in the fluid.

An electrophoretic display device according to an embodiment of the present invention includes a substrate; A first electrode layer on the substrate; An adhesive layer on the first electrode layer; A cell layer on the adhesive layer; And an electrode film on the cell layer, wherein the electrode film comprises: a base film; A second electrode layer on one surface of the base film facing the substrate; A barrier layer on the other surface of the base film; And a coating layer on the barrier layer.

The cell layer may comprise microcapsules comprising a fluid and a plurality of charged particles in the fluid.

The electrophoretic display device may further include a sealing member covering a side surface of the cell layer and the electrode film.

The sealing member may be located above the edge of the substrate, and may contact the cell layer and the side surface of the electrode film.

The area of the adhesive layer, the cell layer, and the electrode film may be smaller than the area of the substrate.

An electrophoretic display device according to an embodiment of the present invention includes a substrate; A first electrode layer on the substrate; And a display film on the first electrode layer, wherein the display film comprises: a base film; A second electrode layer on one surface of the base film facing the substrate; A barrier layer on the other surface of the base film; A coating layer on the barrier layer; A cell layer on the second electrode layer; And an adhesive layer on the cell layer.

The cell layer may comprise microcapsules comprising a fluid and a plurality of charged particles in the fluid.

The electrophoretic display device may further include a sealing member covering a side surface of the display film.

The sealing member is located above the edge of the substrate and can contact the side surface of the display film.

The area of the display film may be smaller than the area of the substrate.

Embodiments of the present invention can reduce cost by providing an electrode film and a display film in which a protective layer and an electrode layer are integrally formed, and can provide the protective layer to the electrophoretic display device without a separate lamination process, .

1 is a cross-sectional view schematically showing an electrophoretic display film according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing an electrophoretic display device according to an embodiment of the present invention.
3 is a cross-sectional view showing a part of the electrophoretic display device of FIG.
FIGS. 4 to 6 are views schematically showing a method of manufacturing an electrophoretic display device according to an embodiment of the present invention.
7 to 9 are views schematically showing a manufacturing method of an electrophoretic display device as a comparative example of the embodiment of the present invention.
10 is a schematic cross-sectional view of an electrophoretic display device according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning. Also, in the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessive are intended to mean that a feature, or element, described in the specification is present, and does not preclude the possibility that one or more other features or elements may be added.

1 is a cross-sectional view schematically showing an electrophoretic display film according to an embodiment of the present invention.

Referring to FIG. 1, an electrophoretic display film 5000 may include an adhesive layer 2000, a cell layer 3000, and a substrate layer 4000. The substrate layer 4000 may include an electrode layer 4100, a substrate 4200, and a protective layer 4500.

The substrate 4200 may be a transparent transparent material having a high transmittance and may be a base film formed of a material having a high transmittance of 80% or more. The substrate 4200 is a transparent polymer film having excellent light transmittance. The substrate 4200 may be a transparent polymer film such as polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethyelenene naphthalate ), Polyethylene terephthalide (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate (TAC) But is not limited thereto.

An electrode layer 4100, a cell layer 3000, and an adhesive layer 2000 may be sequentially arranged on one surface of the substrate 4200.

The electrode layer 4100 may include a common electrode formed in a plate shape so as to be common to the plurality of display cells 3300. The electrode layer 4100 includes a transparent conductive material such as ITO (indium tin oxide), IZO (indium zinc oxide), IZTO (indium zinc tin oxide), AZO (aluminum zinc oxide), ZnO, and TCO can do.

The cell layer 3000 may include a plurality of display cells. Display cell 3300 may include an electrophoretic material comprising at least one charged particle 3100 disposed in fluid 3200 and capable of moving through fluid 3200 under the influence of an electric field.

The adhesive layer 2000 may be formed using Pressure Sensitive Adhesive (PSA). The pressure-sensitive adhesive can use a material that does not require a change in the optical properties of the constituent members and does not require a high-temperature process during curing and drying at the time of adhesion treatment. For example, the adhesive layer 2000 can be made of an appropriate polymer such as an acrylic polymer, a silicone polymer, polyester, polyurethane, polyether, or synthetic rubber. The adhesive layer 200 may be cured by energy (e.g., heat or UV, etc.) or may be uncured.

A protective layer 4500 may be disposed on the other surface of the substrate 4200. The protective layer 4500 may include a barrier layer for preventing penetration of oxygen or moisture from the outside, and at least one coating layer for improving optical characteristics.

The electrode layer 4100 and the protective layer 4500 may have a high transmittance of 90% or more through index matching.

2 is a cross-sectional view schematically showing an electrophoretic display device according to an embodiment of the present invention. 3 is a cross-sectional view showing a part of the electrophoretic display device of FIG.

2 and 3, an electrophoretic display device 1 according to an embodiment includes a backplane 100, a front plane 500, and a sealing material 600. The electrophoretic display device 1 may be a reflection type display device for displaying an image by reflecting external light using charged particles or a transmissive display device for displaying an image by blocking and transmitting light of a light source, , And a display device based on an electrophoresis phenomenon.

The backplane 100 may include a lower substrate 110 and a first electrode layer on the lower substrate 110. The first electrode layer may include a plurality of pixel electrodes 120 arranged per pixel. The backplane 100 has a larger size than the front plane 400.

The lower substrate 110 may be a substrate made of various materials such as plastic, metal, and the like. For example, the lower substrate 110 may be an insulating organic material such as polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN) polyethyeleneterephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate (TAC), etc. But the present invention is not limited thereto. As another example, the lower substrate 110 may include a metal foil containing a metal such as silver, aluminum, or a plastic film coated with a metal layer.

The lower substrate 110 can be a flexible substrate that can be bent, bent or twisted, in which case the lower substrate 110 can be a flexile printed circuit board. However, the present invention is not limited thereto, and the lower substrate 110 may be made of phenol-based or epoxy-based synthetic resin, and the lower substrate 110 may be a rigid printed circuit board.

The pixel electrode 120 may apply the same or different voltages to the plurality of display cells 330. [ The pixel electrode 120 is provided for each unit pixel and can be independently driven for each unit pixel. The unit pixel may be composed of one display cell 330 or a plurality of display cells 330 which may display different colors. The pixel electrode 120 may have different planar shapes and sizes depending on the design. The pixel electrodes 120 may be spaced apart from each other on one surface of the lower substrate 110.

The pixel electrode 120 may be formed of a single layer structure of copper, aluminum, indium tin oxide (ITO), or indium zinc oxide (IZO), or a nickel or gold And the like can be formed in a multi-layered structure.

Although not shown, at least one passive element and interconnection may be further provided between the lower substrate 110 and the pixel electrode 120, and in some cases, an active switching element using a semiconductor material such as a thin film transistor may be further included have.

The front plane 500 may include an adhesive layer 200, a cell layer 300, and an upper substrate layer 400. The front plane 500 may be implemented with the electrophoretic display film 5000 shown in FIG.

The adhesive layer 200 may be formed using Pressure Sensitive Adhesive (PSA). The pressure-sensitive adhesive can use a material that does not require a change in the optical properties of the constituent members and does not require a high-temperature process during curing and drying at the time of adhesion treatment. For example, as the adhesive layer 200, an appropriate polymer such as an acrylic polymer, a silicone polymer, a polyester, a polyurethane, a polyether or a synthetic rubber can be used. The adhesive layer 200 may be cured or uncured by energy (e.g., heat or UV, etc.).

The cell layer 300 may include a plurality of display cells 330. The plurality of display cells 330 may be arranged in a single layer or a plurality of layers. Display cell 330 may include microcapsules having at least one particle 310 and a fluid 320.

The particles 310 can be charged with (+) polarity or (-) polarity and can have various colors. The particles 310 can be organic or inorganic compounds and can absorb light or reflect (or scatter) light. The particles 310 may be reflective materials, such as metal particles. The particles 310 may be colored particles. In the embodiment of FIG. 3, only one polarity charged particles are included, but the embodiment of the present invention is not limited thereto. For example, the particles 310 may include two types of particles having different polarities. The colors of the two types of particles can be different.

The fluid 320 may be a water, a methanol, an ethanol, a propanol, a butanol, a propylene carbonate, a toluene, a benzene, a hexane ), Chloroform, isoparaffin oil, silicone oil, ester-based oil, hydrocarbon-based oil tree, hexanoic acid, dimethicone, cetyloctanoate, dicaprylate, isopropyl myristate, Phenol acetate, and the like. The fluid 320 may include a fluorescent material, a phosphorescent material, a light emitting material, or the like, or a color variable material (for example, a zeotropic pigment material, a zeotropic dye material, or the like) whose color characteristic changes as energy is applied.

Although a display cell in the form of a microcapsule is shown in Fig. 3, the embodiment of the present invention is not limited thereto, and may be embodied as a microcup, a microchannel, or a microcontainer having any shape.

The display cell 330 may be fixed within the binder 350. The binder 350 may include at least one transparent polymer material selected from the group consisting of an acrylic polymer, a silicone polymer, an ester polymer, a urethane polymer, an amide polymer, an ether polymer, a fluorine polymer, and rubber. In addition, the binder 350 may include a fluorescent material, a phosphorescent material, a light emitting material, or the like (for example, a zeotropic pigment material, a zeotropic dye material, or the like) whose color characteristics change as energy is applied. The binder 350 may be in a cured state.

The upper substrate layer 400 includes a second electrode layer 410, an upper substrate 420, and a protective layer 450, and may be provided in a film form.

The second electrode layer 410 may apply the same voltage to the plurality of display cells 330. The second electrode layer 410 may include a common electrode formed in a plate shape so as to be common to the plurality of display cells 330. The second electrode layer 410 may be disposed entirely on the viewing side (i.e., one side of the display device in which the image is displayed), and may be formed of indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO) , Aluminum zinc oxide (AZO), ZnO, and transparent conductive oxide (TCO).

The electrophoretic display device 1 controls at least one of the intensity and the direction of the electric field applied to the cell layer 300 by the voltage applied to the common electrode of the pixel electrode 120 and the second electrode layer 410 of the first electrode layer Thereby controlling the wavelength of the reflected light, i.e., the color, by controlling the position or the interval of the particles 310 in the display cell 330. [

The upper substrate 420 may be a transparent transparent material having a high transmittance, and may be a base film formed of a material having a high transmittance of 80% or more. The upper substrate 420 is a transparent polymer film having excellent light transmittance. The upper substrate 420 is made of a transparent polymer film such as polyethersulphone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate naphthalate, polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose triacetate But is not limited thereto.

The protective layer 450 may include a barrier layer 430 and a coating layer 440.

The barrier layer 430 may be formed on the opposite surface of the upper substrate 420 on which the second electrode layer 410 is formed. And functions to prevent oxygen or moisture from penetrating from the outside, and can be formed into an organic material, an inorganic material, or a multi-layer structure of an organic material and an inorganic material. The barrier layer 430 may comprise, for example, acrylic or silicon based materials.

The coating layer 440 is a layer for improving the optical characteristics of the electrophoretic display device 1. The coating layer 440 may be formed on the upper surface of the barrier layer 430 by at least one of hard coating treatment, ultraviolet ray blocking (absorption) treatment, anti-glare treatment, anti- Blocking layer, an anti-glare layer, an anti-yellow layer, and the like.

The second electrode layer 410, the barrier layer 430 and the coating layer 440 may have a high transmittance of 90% or more through index matching.

The sealing material 600 may be arranged to cover at least the edge of the backplane 100 and the side surface of the front plane 500 to prevent penetration of moisture and impurities from the outside. The sealing material 600 may extend to the top of the front plane 500. The sealing material 600, including the curable material, can be cured by heat or UV.

FIGS. 4 to 6 are views schematically showing a method of manufacturing an electrophoretic display device according to an embodiment of the present invention.

Referring to FIG. 4, the front plane 500 according to one embodiment may be provided in the form of a film. The manufacturing process of the front plane 500 includes a process of manufacturing an electrode film, a process of forming a cell layer on the electrode film, a process of forming an adhesive layer on the cell layer, and a process of attaching a release sheet to the adhesive layer . ≪ / RTI >

First, a second electrode layer 410 may be formed on a first surface of the upper substrate 420.

The upper substrate 420 may be a transparent polymer film such as PET, PEN, PES, PAR, PC or the like, but is not limited thereto. The second electrode layer 410 may be formed of a transparent conductive material such as ITO, IZO, IZTO, AZO, ZnO and TCO on the first surface of the upper substrate 420. The second electrode layer 410 may be formed on the first surface of the upper substrate 420 by a dry process. For example, the second electrode layer 410 may be formed on the upper substrate 420 through a sputtering process.

The barrier layer 430 may be formed on the second surface opposite to the first surface of the upper substrate 420 by a dry process and / or a wet process. The barrier layer 430 may be formed of an organic material or an inorganic material, or may have a multi-layer structure in which organic materials and inorganic materials are alternately stacked.

Next, the coating layer 440 may be formed on the barrier layer 430. [ The coating layer 440 may be formed as a single layer or a multilayer by performing at least one coating process on the upper surface of the barrier layer 430 so as to have an ultraviolet blocking function, an anti-glare function, an anti-yellow function,

The order of forming the second electrode layer 410, the barrier layer 430, and the coating layer 440 is not limited to the above-described embodiment. For example, the barrier layer 430, the second electrode layer 410, and the coating layer 440 may be formed in this order, or the barrier layer 430, the coating layer 440, and the second electrode layer 410 may be formed in this order have.

Next, the cell layer 300 may be formed on the electrode film including the second electrode layer 410, the upper substrate 420, the barrier layer 430, and the coating layer 440.

A plurality of display cells 330 are mixed with a liquid binder 350 at a predetermined ratio and a paste in which a liquid binder 350 and a plurality of display cells 330 are mixed is formed as a single layer or a multi- It can be applied in multiple layers to be coated or printed. The display cell 330 coating may be applied to a substrate such as a patch die coating, a slot or extrusion coating, a slide or cascade coating, a curtain coating, a roll coating, a gravure coating, a dip coating, a spray coating, a meniscus coating, a spin coating, , Silk screen printing, electrostatic printing, thermal printing, ink jet printing, and the like. The liquid binder 350 may be thermally cured or photo-cured by heat or UV irradiation.

The adhesive layer 200 may be applied on the display cell layer 300. The adhesive layer 200 may be formed using a pressure-sensitive adhesive.

Next, a release sheet (RS, FIG. 4) can be attached as a means for preventing foreign matter from adhering to the surface of the adhesive layer 200 on the adhesive layer 200. The release sheet RS may have a very low coefficient of friction or may be formed of a release film different in structure and configuration from the adhesive layer 200. [

The front plane 500 (i.e., display film) in the form of a film can be manufactured by forming the display cell layer 300 and the adhesive layer 200 on the electrode film and attaching the release sheet RS.

The front plane 500 can be tested with the release sheet RS attached.

The embodiment of the present invention may be applied to a multifunctional single electrode film having an electrode layer 410 on one surface of a top substrate 420 and a protective layer 450 on the other surface thereof, Can be manufactured and provided.

Referring to FIG. 5, a lamination process for bonding the front plane 500 to the backplane 100 may be performed.

The backplane 100 may include a first electrode layer on the lower substrate 110.

The lower substrate 110 may be a transparent polymer film such as PET, PEN, PES, PAR, or PC. As another example, the lower substrate 110 may be a flexible circuit board (FPCB). By applying the FPCB substrate, the process can be simplified and the process yield can be improved.

The first electrode layer may include a plurality of pixel electrodes 120 formed to correspond to a unit pixel. The pixel electrode 120 may be formed of an opaque conductive layer containing Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca or an alloy thereof, or an opaque conductive layer containing ITO, IZO, IZTO, AZO, ZnO And TCO, and then patterning the transparent conductive layer.

The release sheet RS can be peeled off from the front plane 500 and the front plane 500 can be aligned on the backplane 100 so that the exposed adhesive layer 200 faces the backplane 100. [ The front plane 500 and the backplane 100 can be joined by a lamination process such as thermocompression bonding or rolling.

6, after the backplane 100 and the front plane 500 are combined, a sealing material 600 covering the side surface of the front plane 500 may be formed. The sealing material 600 may include a curing material and may be cured by heat, UV, or the like.

The embodiment of the present invention can manufacture the electrophoretic display device 1 by combining the back plane 500 and the back plane 500 in which the protective layer and the cell layer are integrally formed by a single lamination process. Therefore, after the pair of substrates are bonded to each other with the cell layer therebetween, an additional lamination process for forming the protective layer is not necessary, so that the process can be simplified and the cost can be reduced.

7 to 9 are views schematically showing a manufacturing method of an electrophoretic display device as a comparative example of the embodiment of the present invention.

Referring to FIG. 7, in order to manufacture the electrophoretic display device of the comparative example, a primary lamination process of bonding the front plane 20 to the backplane 10 may be performed.

The backplane 10 may include a substrate and a first electrode layer over the substrate. The first electrode layer may have a plurality of pixel electrodes corresponding to unit pixels.

The front plane 20 includes a first release sheet RS1 and a second release sheet RS2 in a structure in which the upper substrate 21, the second electrode layer 22, the cell layer 23 and the adhesive layer 24 are sequentially formed May be provided in the form of a film attached to the upper substrate 21 and the adhesive layer 24, respectively.

After the second release sheet RS2 is peeled from the front plane 20, the front plane 20 is aligned on the back plane 10 and the front plane 20 and the front plane 20 are laminated by a lamination process such as thermal compression, The backplane 10 can be coupled.

8, the first release sheet RS1 of the front plane 20 is peeled off and the first protective film 30 and the second protective film 40 ) Can be combined with each other.

The first protective film 30 includes a base substrate 31, an adhesive 32 formed on one surface of the base substrate 31 and a barrier layer 33 formed on the other surface of the base substrate 31, 32 may be attached with a release sheet RS. The base substrate 31 may be a transparent polymer film such as PET. The adhesive 32 may be an optical clear adhesive.

The second protective film 40 includes a base substrate 41 and an adhesive 42 formed on one surface of the base substrate 41 and a coating layer 43 formed on the other surface of the base substrate 41. The adhesive 42 The release sheet RS may be attached to the release sheet RS. The base substrate 41 may be a transparent polymer film such as PET. The adhesive 42 may be an optical clear adhesive.

The release sheet RS of the first protective film 30 and the second protective film 40 are peeled off and the first protective film 30 and the second protective film 40 are lined up on the front plane 20 The protective layer 50 may be formed on the front plane 20 by being joined with the front plane 20 by a lamination process such as thermal pressing or rolling.

Referring to FIG. 9, the electrophoretic display device 2 of the comparative example can be formed by injecting a sealant into the side surface of the front plane 20 and then curing.

The electrophoretic display device 2 of the comparative example needs accurate alignment of the backplane 10 and the front plane 20 and the front plane 20 and the protective layer 50 and requires two laminating processes, Complex. In addition, since the release sheet for protecting the front plane 20, the first protective film 30, and the second protective film 40 is required, the cost of the release sheet is increased. The cell layer 30 may be damaged by a pressure applied during a plurality of lamination processes and a gap may be generated between the cell layer 30 due to microbubbles and the pixel electrode on the backplane 10, have. Particularly, the adhesive (OCA) has a disadvantage that heat resistance and heat resistance are weak. Therefore, since the PET base substrate 31 and the OCA adhesive 32 of the protective film are positioned below the barrier layer 33, the PET base substrate 31 and the OCA adhesive 32 are stable and reliable due to moisture Can be degraded.

On the other hand, the electrophoretic display device 1 according to an embodiment of the present invention includes a cell layer formed on a hybrid electrode film having a protective layer and an electrode layer on an upper substrate to provide a display film, (1) can be produced. That is, the electrophoretic display device 1 according to the embodiment of the present invention can simplify the lamination process and minimize the damage of the display cell and reduce the cost.

10 is a schematic cross-sectional view of an electrophoretic display device according to another embodiment of the present invention.

10, the electrophoretic display device 3 according to one embodiment may include a backplane 100 ', a cell layer 300' on the backplane 100 ', and an upper substrate layer 400 .

The backplane 100 'may include a lower substrate 110' and a plurality of pixel electrodes 120 'formed per unit pixel.

The cell layer 300 'may include microcups 330' formed between the plurality of partitions 360. The microcup 330 'may comprise a plurality of charged particles 310' and a fluid 320 '. The barrier ribs 360 may be formed between the pixel electrodes on the backplane 100 'and the microcups 330' defined by the barrier ribs 360 may be formed in the cell layer 300 '.

The upper substrate layer 400 may include a transparent electrode layer 410 provided on one surface of the upper substrate 420 and the upper substrate 420 and a protective layer 450 provided on the other surface of the upper substrate 420. have. The protective layer 450 may include a barrier layer and a coating layer. Since the upper substrate layer 400 is the same as the upper substrate layer 400 described with reference to FIGS. 1 to 5, detailed description thereof will be omitted.

The electrophoretic display device 3 can be manufactured by bonding the upper substrate 420 provided with the protective layer 450 and the transparent electrode layer 410 on the cell layer 300 '.

The electrophoretic display device 3 according to the embodiment of FIG. 10 differs from the embodiment of FIG. 3 in that it has a microcapsule-type display cell in that it is a microcup-shaped display cell. However, the electrophoretic display device 3 according to the embodiment of FIG. 10 also uses the hybrid single electrode film in which the protective layer and the electrode layer are integrally formed as the upper substrate layer, thereby reducing the additional lamination process for forming a separate protective layer .

Embodiments of the present invention can reduce cost by providing an electrode film and a display film in which a protective layer and an electrode layer are integrally formed, and can provide the protective layer to the electrophoretic display device without a separate lamination process, .

If each step constituting the manufacturing method according to the present invention is not explicitly described or contradicted, each step can be performed in an appropriate order. The present invention is not limited to the above-described embodiments.

While the present invention has been described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (12)

A base film;
A transparent electrode layer on the first side of the base film;
A barrier layer on a second side opposite to the first side of the base film; And
And a coating layer on the barrier layer. The method according to claim 1,
A cell layer on the transparent electrode layer; And
And a pressure-sensitive adhesive layer on the cell layer. 3. The method of claim 2,
Wherein the cell layer comprises a microcapsule comprising a fluid and a plurality of charged particles in the fluid. Board;
A first electrode layer on the substrate;
An adhesive layer on the first electrode layer;
A cell layer on the adhesive layer; And
And an electrode film on the cell layer,
Wherein:
A base film;
A second electrode layer on one surface of the base film facing the substrate;
A barrier layer on the other surface of the base film; And
And a coating layer on the barrier layer. 5. The method of claim 4,
Wherein the cell layer comprises a microcapsule comprising a fluid and a plurality of charged particles in the fluid. 6. The method of claim 5,
And a sealing member covering the side surfaces of the cell layer and the electrode film. The method according to claim 6,
Wherein the sealing member is located above the edge of the substrate and contacts the side surfaces of the cell layer and the electrode film. 5. The method of claim 4,
Wherein an area of the adhesive layer, the cell layer, and the electrode film is smaller than an area of the substrate. Board;
A first electrode layer on the substrate; And
And a display film on the first electrode layer,
Wherein the display film comprises:
A base film;
A second electrode layer on one surface of the base film facing the substrate;
A barrier layer on the other surface of the base film;
A coating layer on the barrier layer;
A cell layer on the second electrode layer; And
And an adhesive layer on the cell layer. 10. The method of claim 9,
And a sealing member covering a side surface of the display film. 11. The method of claim 10,
Wherein the sealing member is positioned on an edge of the substrate and contacts a side surface of the display film. 10. The method of claim 9,
Wherein an area of the display film is smaller than an area of the substrate.

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