Nest type electrophoresis display structure

Abstract

The invention belongs to the technical field of electronic paper display structures, and particularly relates to a nested electrophoretic display structure. Comprising an electrophoresis display module, the electrophoresis display module comprises a liner frame, a pixel electrode, an upper-layer flexible transparent substrate and an electrophoresis layer, the electrophoresis layer is arranged between the pixel electrode and the upper-layer flexible transparent substrate, and the liner frame is located on the pixel electrode and located on the peripheral side of the electrophoresis layer; the electrophoresis layer comprises a transparent porous polymer support, and a dichroic electrophoretic particle electrophoresis liquid system is arranged in holes of the transparent porous polymer support; an upper-layer transparent electrode is arranged between the upper-layer flexible transparent base material and the electrophoresis layer, conductive silver paste is arranged on the liner frame, and the upper-layer transparent electrode is in contact with the electrophoresis layer and the conductive silver paste. The chemical process problem that microcapsules in traditional electronic paper are complex in preparation and poor in stability is solved, the production efficiency is improved, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0002] The present application belongs to the technical field of electronic paper display structure, and particularly relates to a nested electrophoretic display structure. BACKGROUND

[0004] In the field of electronic paper display technology, microcapsule electrophoretic display (EPD) and microcup electrophoretic display are two main technologies. Both of these technologies use the principle of electrophoresis, that is, under the action of an electric field, charged particles move in a medium to realize the display of images.

[0005] Microcapsule electrophoretic technology is one of the earliest commercialized forms of electronic paper display technology, and is widely used in electronic readers such as Amazon's Kindle and other devices. This technology is popular in the market due to its excellent readability, low energy consumption and visual effects close to paper. However, due to the current level of chemical processes, microcapsule electrophoretic display may have the following shortcomings: the uneven size of microcapsules may affect the uniformity of the display; the mechanical strength is relatively poor, which may affect the display performance when subjected to pressure or curling; sensitive to humidity, additional measures are needed to protect the display effect.

[0006] Microcup electrophoretic technology is an improvement over traditional microcapsule electrophoretic technology, which uses an open microcup structure to encapsulate electrophoretic materials. This technology supports larger-scale production and higher production efficiency. In microcup electrophoretic display technology, electrophoretic materials are encapsulated in small open containers, and these microcups are made into an array and fixed on a substrate. Compared with microcapsule technology, microcup technology can be produced by a roller, reducing production costs; support faster production and higher production efficiency, better encapsulation, improve the durability and reliability of the display, and make it easier to achieve full-color display.

[0007] However, compared with microcapsules, microcups may have some deficiencies in contrast and flexibility. In addition, the "roll-to-roll" forming process and microcup encapsulation process of SiPix electronic paper have obvious technical threshold, and almost only SiPix Corporation (BenQ Group) monopolizes this technology and is the only manufacturer, which has the problems of high process cost and the like. Therefore, it is necessary to design a nested electrophoretic display structure to solve the above problems. SUMMARY

[0009] In view of the above problems, the present application provides a nested electrophoretic display structure to solve the problems raised in the background art.

[0010] In order to achieve the above object, the present application provides the following technical scheme: a nested electrophoretic display structure, comprising an electrophoretic display module, the electrophoretic display module comprises a gasket frame, a pixel electrode, an upper layer flexible transparent substrate, an electrophoretic layer, an upper layer transparent electrode and conductive silver paste, the electrophoretic layer is arranged between the pixel electrode and the upper layer flexible transparent substrate, and the gasket frame is located on the pixel electrode and the periphery of the electrophoretic layer;

[0011] The electrophoretic layer comprises a transparent porous polymer support, and a dichromatic electrophoretic particle electrophoretic liquid system is arranged in the holes of the transparent porous polymer support, and a plurality of holes are closely arranged.

[0012] The upper layer transparent electrode is arranged between the upper layer flexible transparent substrate and the electrophoretic layer, the conductive silver paste is arranged on the gasket frame, and the upper layer transparent electrode is in contact with the electrophoretic layer and the conductive silver paste.

[0013] Further, the pixel electrode comprises a segment code and a dot matrix structure, and the pixel electrode is one or more of a metal flexible substrate, glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polyimide (PI).

[0014] Further, the gasket frame has a width of 5-200 mu m and a height of 3-50 mu m.

[0015] Further, the material of the gasket frame is a mixture of a high polymer and a filler, the high polymer comprises one or more of an acrylic resin, a polysaccharide, a polyurethane resin, an epoxy resin and a phenolic resin, and the filler can comprise one or more of a silica ball, a polymer particle, plastic and a metal oxide particle.

[0016] Further, the electrophoretic display module further comprises an IC integrated module and an anisotropic conductive adhesive film (ACF), the IC integrated module is electrically connected with the pixel electrode through the anisotropic conductive adhesive film (ACF), the IC integrated module is arranged above the pixel electrode and is sealed and fixed by blue glue.

[0017] Further, the edge of the electrophoretic display module is surrounded by a waterproof sealing glue to form a sealing and fixing.

[0018] Further, the upper layer flexible transparent substrate is closely combined with the upper layer transparent electrode, the upper layer flexible transparent substrate is one or more of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl acrylate (PMMA), polycarbonate (PC) and transparent polyimide (CPI), and the upper layer transparent electrode is one or more of indium tin oxide (ITO), graphene, silver nanowire (AgNWs), polyaniline (PANI) and carbon nanotube.

[0019] Further, the transparent porous polymer support is arranged as a disordered porous structure, the porosity of the transparent porous polymer support reaches 75%-90%, and the pore radius of the holes ranges from 10 to 40 μm.

[0020] Further, the holes form a columnar structure supporting the space of the electrophoretic layer in the vertical direction.

[0021] Technical effects and advantages of the present application:

[0022] 1. The high-porosity transparent porous polymer support structure has the advantage of spontaneously forming a dense hollow microstructure, avoiding complex chemical processes or high-precision imprinting processes, and at the same time, the display reliability and rapid response of the micro-cup structure can be obtained.

[0023] 2. The problem of complex chemical process and poor stability of microcapsule preparation in traditional electronic paper is overcome, which is beneficial to improve production efficiency and reduce manufacturing cost.

[0024] 3. The process time of the electrophoretic display module is reduced.

[0025] 4. Compared with SiPix micro-cup electronic paper, the investment in process equipment is reduced, the process flow is simplified, the back-end yield is improved, and manpower and space are saved.

[0026] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood by those skilled in the art. The purpose and other advantages of the present application can be achieved and obtained by the structure indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0029] Figure 1 A side cross-sectional structure schematic diagram of a nested electrophoretic display structure of an embodiment of the present application is shown;

[0030] Figure 2 A side cross-sectional structure schematic diagram of a nested electrophoretic display structure of another embodiment of the present application is shown;

[0031] Figure 3 A structure schematic diagram of a transparent porous polymer support of a disordered porous structure wrapped with colored electrophoretic particles is shown.

[0032] Figure 4 A schematic diagram of a transparent porous polymer scaffold with a vertically oriented porous structure encapsulating colored electrophoretic particles, according to an embodiment of the present invention, is shown.

[0033] Figure 5 A schematic diagram of the nested electrophoretic display structure according to an embodiment of the present invention is shown.

[0034] Reference numerals: 01, Colored electrophoretic particle A; 02, Colored electrophoretic particle B; 03, Hole; 04, Transparent porous polymer support; 05, Upper transparent electrode; 06, Pad frame; 07, Pixel electrode; 08, Upper flexible transparent substrate; 09, Encapsulating waterproof adhesive; 10, Conductive silver paste; 11, Blue glue; 12, Anisotropic conductive film (ACF); 13, IC integrated module; R, Pore radius. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figure 1 , Figure 3 as well as Figure 5 As shown, an embodiment of the present invention provides a nested electrophoretic display structure, including an electrophoretic display module. The electrophoretic display module includes a pad frame 06, a pixel electrode 07, an upper flexible transparent substrate 08, and an electrophoretic layer. The electrophoretic layer is disposed between the pixel electrode 07 and the upper flexible transparent substrate 08. The pad frame 06 is located on the pixel electrode 07 and on the periphery of the electrophoretic layer.

[0038] The electrophoretic layer includes a transparent porous polymer scaffold 04, and a two-color electrophoretic particle electrophoresis liquid system is disposed in the pores 03 of the transparent porous polymer scaffold 04, and the multiple pores 03 are closely arranged among each other.

[0039] An upper transparent electrode 05 is provided between the upper flexible transparent substrate 08 and the electrophoretic layer, and a conductive silver paste 10 is provided on the pad frame 06. The upper transparent electrode 05 is in contact with the electrophoretic layer and the conductive silver paste 10.

[0040] In the embodiment, the nested electrophoretic display structure mainly comprises an electronic paper sheet structure composed of a pixel electrode 07 and an upper flexible transparent substrate 08; an electrophoretic layer region is formed between the pixel electrode 07 and the upper flexible transparent substrate 08; an upper transparent electrode 05 is in contact with the upper flexible transparent substrate 08 and is arranged on the inner side; a transparent porous polymer support 04 occupies the space between the upper transparent electrode 05 and the pixel electrode 07 to form the main body of the electrophoretic layer; a large number of holes 03 are distributed in the transparent porous polymer support 04, and most of the holes 03 are connected; the upper transparent electrode 05 and the upper flexible transparent substrate 08 are covered on the electrophoretic layer.

[0041] Optionally, the pixel electrode 07 comprises a segment code and a dot matrix structure, and the pixel electrode 07 is one or more of a metal flexible substrate, glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyimide (PI).

[0042] Optionally, the gasket frame 06 has a width of 5-200 μm and a height of 3-50 μm. The material of the gasket frame 06 is a mixture of a high polymer and a filler, wherein the high polymer comprises one or more of an acrylic resin, a polysaccharide, a polyurethane resin, an epoxy resin, and a phenolic resin, and the filler can comprise one or more of a silica ball, a polymer particle, plastic, and a metal oxide particle.

[0043] Specifically, the gasket frame 06 can be formed by heat curing, natural curing, or photocuring.

[0044] In the embodiment, the periphery of the electrophoretic layer is surrounded by the gasket frame 06 to form a display area, the gasket frame 06 also surrounds another cavity outside the display area and is filled with conductive silver paste 10 to electrically connect the upper and lower electrodes, and the gasket frame 06 is used to demarcate and separate functional areas.

[0045] Optionally, as shown in Figure 1 and Figure 2 The electrophoretic display module further comprises an IC integrated module 13 and anisotropic conductive adhesive film ACF 12, the IC integrated module 13 is electrically connected to the pixel electrode 07 through the anisotropic conductive adhesive film ACF 12, the IC integrated module 13 is arranged above the pixel electrode 07 and is sealed and fixed by blue glue 11.

[0046] Optionally, the edges of the electrophoretic display module are surrounded by encapsulation waterproof glue 09 to form encapsulation and fixation.

[0047] In the embodiment, in addition to the gasket frame 06 surrounding the electrophoretic layer and the conductive silver paste 10, a thicker encapsulation waterproof glue 09 is arranged outside to wrap the gasket frame 06 and the upper flexible substrate.

[0048] Optionally, the upper flexible transparent substrate 08 is closely combined with the upper transparent electrode 05, the upper flexible transparent substrate 08 is one or more of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), polycarbonate (PC), transparent polyimide (CPI), and the upper transparent electrode 05 is one or more of indium tin oxide (ITO), graphene, silver nanowire (AgNWs), polyaniline (PANI), and carbon nanotube.

[0049] Optionally, the transparent porous polymer scaffold 04 is arranged as a disordered porous structure, the porosity of the transparent porous polymer scaffold 04 is 75%-90%, and the porous radius R of the hole 03 ranges from 10 to 40 μm.

[0050] In the embodiment, the porosity of the transparent porous polymer scaffold 04 is 75%-90%, the porous radius R of the hole 03 ranges from 10 to 40 μm, and the porous radius R of more than 70% of the holes 03 ranges from 30 to 40 μm, ensuring that electrophoretic movement can be carried out in sufficient space of the transparent porous polymer scaffold 04. Figure 5 As shown in the figure, from the perspective of the plane, the display structure of the plurality of conductive porous structures surrounding the plasma system is similar to the electrophoretic display effect of microcapsule or microcup electronic paper; in the embodiment, the mesh entity of the transparent porous polymer scaffold 04 is similar to the capsule wall of the microcapsule and the cup wall of the microcup, and does not have adverse effects on display brightness and contrast, and has a large display area.

[0051] The height of the electrophoretic layer between the pixel electrode 07 and the upper transparent electrode 05 is ≤80 μm; for example, the height of the electrophoretic layer is controlled to ensure that the space of a single hole 03 can simultaneously include the upper and lower contact surfaces, forming an electrophoretic channel through which the colored electrophoretic particles A01 and the colored electrophoretic particles B02 can flow. Figure 1 As shown in the figure, the transparent porous polymer scaffold 04 and the three-dimensional relationship of the single hole 03 emphasized in the embodiment should be understood that the holes 03 occupy most of the space and are interconnected in the electrophoretic layer region, the surface of the transparent porous polymer scaffold 04 is smooth and the morphology is linked into a three-dimensional mesh network, and is connected to the upper transparent electrode 05 and the pixel electrode 07, and supports the electrophoretic layer.

[0052] Figure 3 As shown in the figure, the transparent porous polymer scaffold 04 and the three-dimensional relationship of the single hole 03 emphasized in the embodiment should be understood that the holes 03 occupy most of the space and are interconnected in the electrophoretic layer region, the surface of the transparent porous polymer scaffold 04 is smooth and the morphology is linked into a three-dimensional mesh network, and is connected to the upper transparent electrode 05 and the pixel electrode 07, and supports the electrophoretic layer.

[0053] ​The color electrophoretic particles A01 and B02 have different types of charges, and at least one of the two color electrophoretic particles is black. In this embodiment, the color of the color electrophoretic particles is not limited. In some embodiments, the holes 03 in the transparent porous polymer support 04 are sufficient in space, so that other two-color, three-color or multi-color charged particles can also be included in the plasma system, which is selected according to the actual application terminal, and this embodiment is not limited. There is still a large amount of space in the electrophoretic layer to allow the color electrophoretic particles to move electrophoretically in the holes 03, and the transparent porous polymer support 04 itself is made of transparent material to reduce the interference with the display effect.

[0054] As shown in Figure 2 Another embodiment of the nested electrophoretic display structure of the present application is described, which describes another improved vertical orientation of the transparent porous polymer support 04. The holes 03 form a columnar structure supporting the space of the electrophoretic layer in the vertical direction.

[0055] In this embodiment, the nested electrophoretic display structure mainly includes an electronic paper sheet structure composed of a pixel electrode 07 and an upper flexible transparent substrate 08. The electrophoretic layer region is formed between the pixel electrode 07 and the upper flexible transparent substrate 08. The upper transparent electrode 05 is in contact with the upper flexible transparent substrate 08 and is arranged on the inside. The transparent porous polymer support 04 occupies the space between the upper transparent electrode 05 and the pixel electrode 07 to form the main body of the electrophoretic layer. The transparent porous polymer support 04 is distributed with a large number of vertically oriented columnar holes 03, and most of the holes 03 are connected. The upper transparent electrode 05 and the upper flexible transparent substrate 08 are covered on the electrophoretic layer.

[0056] The holes 03 are not a disordered porous structure, but a vertically oriented columnar porous structure. The porous radius R of the holes 03 is in the range of 10-40 μm, the thickness of the hole wall between adjacent holes 03 is in the range of 1-50 μm, and the height of the electrophoretic layer between the pixel electrode 07 and the upper transparent electrode 05 is ≤80 μm. The partial structure of the vertically oriented transparent porous polymer support 04 is shown in Figure 4 The holes 03 form a columnar structure supporting the space of the electrophoretic layer in the vertical direction by the directional freezing technology, and the color electrophoretic particles can effectively move electrophoretically in the columnar space. The directional porous structure described in this embodiment is formed by process control, and the material self-assembles into a plasma system protection and isolation structure similar to a micro-cup structure. Compared with the disordered spherical porous structure, the directional porous structure of this embodiment exhibits anisotropic porous material performance, with a larger display area in the longitudinal direction and higher mechanical strength of the electrophoretic layer in the transverse direction.

[0057] The preparation method of another embodiment of the nested electrophoretic display structure of the present application includes the following process steps:

[0058] Step one, select the appropriate TFT substrate as the pixel electrode 07, through the coating, exposure, development, etching, glue, deposition process to complete the preparation of the pixel electrode 07;

[0059] Step two, the pixel electrode 07 on the use of glue gun extrusion coating gasket frame 06 material, form the required encapsulation electrophoretic layer and conductive silver paste 10 surrounding pattern, and curing;

[0060] Step three, transparent porous polymer scaffold 04 material precursor mixed with evaporable solvent A, and the plasma system with color electrophoretic particles and solvent A system emulsion mixed, the two system is not soluble and there is no material exchange, mixed emulsion as the coating material of electrophoretic layer, and in the gasket frame 06 range of electrophoretic display area;

[0061] Step four, in another gasket frame 06 surrounding area extrusion coating conductive silver paste 10;

[0062] Step five, the upper layer of flexible transparent substrate 08 through the conventional process to make it with the upper layer of transparent electrode 05, the whole upper layer is laminated above the gasket frame 06;

[0063] Step six, before packaging, using the characteristics of the upper layer of flexible transparent substrate 08, by freezing / low pressure / natural evaporation method to remove the solvent A and leave the formed transparent porous polymer scaffold 04 and the plasma system in the hole 03;

[0064] Step seven, laser cutting trimming the upper layer of flexible transparent substrate 08 and the upper layer of transparent electrode 05, the pixel electrode 07 originally reserved for IC integrated module 13 area is exposed;

[0065] Step eight, using the glue gun in the gasket frame 06 periphery coating encapsulation waterproof glue 09 to ensure the electrophoretic layer packaging, and using UV curing or heat curing;

[0066] Step nine, the IC integrated module 13 is bound to the pixel electrode 07, which is completed by COG / COF process;

[0067] Step ten, through the blue glue 11 process, the IC integrated module 13 is completed.

[0068] Another embodiment of the application is a preparation method of a nested electrophoretic display structure, comprising the following process steps:

[0069] Step one, select the appropriate TFT substrate as the pixel electrode 07, through the coating, exposure, development, etching, glue, deposition process to complete the preparation of the pixel electrode 07;

[0070] Step two, the pixel electrode 07 is coated with the gasket frame 06 material by using a dispensing machine to extrude and coat the required encapsulation electrophoretic layer and the surrounding pattern of conductive silver paste 10, and then solidified;

[0071] Step three, the transparent porous polymer scaffold 04 material precursor is configured as a water system composite solution as a solvent component, and the plasma system (organic system) with colored electrophoretic particles is mixed with the water system composite solution system. The two systems are not miscible and there is no material exchange. The mixed emulsion is used as the coating material of the electrophoretic layer, and fills the electrophoretic display area within the range marked by the gasket frame 06;

[0072] Step four, the conductive silver paste 10 is extruded and coated in the area surrounded by another gasket frame 06;

[0073] Step five, the upper flexible transparent substrate 08 is combined with the upper transparent electrode 05 by a conventional process, and the entire upper layer is laminated and covered over the entire electrophoretic layer area and the conductive silver paste 10 area;

[0074] Step six, before encapsulation, the solvent A system in the electrophoretic layer is frozen and evaporated at low temperature to form directional vertical holes 03 and the plasma system in them by using the directional freezing method of the upper flexible transparent substrate 08;

[0075] Step seven, the upper flexible transparent substrate 08 and the upper transparent electrode 05 are cut and trimmed by laser, and the pixel electrode 07 originally reserved for the IC integrated module 13 area is exposed;

[0076] Step eight, the gasket frame 06 is coated with encapsulation waterproof glue 09 around the periphery by using a dispensing machine to ensure the encapsulation of the electrophoretic layer, and then UV light curing or heat curing is performed;

[0077] Step nine, the IC integrated module 13 is bound to the pixel electrode 07, which is completed by the COG / COF process;

[0078] Step ten, the IC integrated module 13 is completed by the blue glue 11 process.

[0079] In this embodiment, the porous structure is used to replace the microcapsule and microcup structure to isolate the plasma system, which fully utilizes the advantages of self-forming and easy size control of porous materials, and overcomes the problems of chemical process uncertainty in microcapsule electronic paper production and the difficulty of simplifying the process of microcup electronic paper and other structural electronic paper production.

[0080] The emulsification system is formed by using the nest-shaped porous polymer and the plasma liquid, and the dense porous electrophoretic packaging structure is formed automatically under the determined process parameters, the new nest-shaped electronic paper production has the advantages of short process steps, full automation, improved theoretical yield, high production efficiency and the like, and has the feasibility of realizing large-size electronic paper production of more than 50 inches.

[0081] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood that modifications can be made to the technical solutions recorded in the foregoing embodiments, or equivalent replacements can be made to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A nested electrophoretic display structure, characterized in that, The electrophoretic display module includes a pad frame (06), a pixel electrode (07), an upper flexible transparent substrate (08), an electrophoretic layer, an upper transparent electrode (05), and a conductive silver paste (10). The electrophoretic layer is disposed between the pixel electrode (07) and the upper flexible transparent substrate (08). The pad frame (06) is located on the pixel electrode (07) and on the periphery of the electrophoretic layer. The electrophoretic layer includes a transparent porous polymer scaffold (04), and a two-color electrophoretic particle electrophoresis liquid system is disposed in the pores (03) of the transparent porous polymer scaffold (04); The upper flexible transparent substrate (08) is provided with the upper transparent electrode (05) between it and the electrophoretic layer, and the conductive silver paste (10) is provided on the pad frame (06). The upper transparent electrode (05) is in contact with the electrophoretic layer and the conductive silver paste (10).

2. The nested electrophoretic display structure according to claim 1, characterized in that, The pixel electrode (07) includes a segment code and dot matrix structure, and the pixel electrode (07) is one or more of the following: metal flexible substrate, glass, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyimide (PI).

3. The nested electrophoretic display structure according to claim 2, characterized in that, The padding frame (06) has a width of 5-200μm and a height of 3-50μm.

4. The nested electrophoretic display structure according to claim 3, characterized in that, The material of the pad frame (06) is a mixture of a polymer and a filler. The polymer includes one or more of acrylic resin, polysaccharide, polyurethane resin, epoxy resin, and phenolic resin. The filler may include one or more of silica balls, polymer particles, plastics, and metal oxide particles.

5. The nested electrophoretic display structure according to claim 1, characterized in that, The electrophoretic display module also includes an IC integrated module (13) and an anisotropic conductive film ACF (12). The IC integrated module (13) forms an electrical signal connection with the pixel electrode (07) through the anisotropic conductive film ACF (12). The IC integrated module (13) is disposed above the pixel electrode (07) and is sealed and fixed with blue glue (11).

6. The nested electrophoretic display structure according to claim 1, characterized in that, The edges of the electrophoretic display module are encapsulated and fixed by a waterproof encapsulating adhesive (09).

7. The nested electrophoretic display structure according to claim 1, characterized in that, The upper flexible transparent substrate (08) is tightly bonded to the upper transparent electrode (05). The upper flexible transparent substrate (08) is one or more of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl methacrylate (PMMA), polycarbonate (PC), and transparent polyimide (CPI). The upper transparent electrode (05) is one or more of indium tin oxide (ITO), graphene, silver nanowires (AgNWs), polyaniline (PANI), and carbon nanotubes.

8. The nested electrophoretic display structure according to claim 1, characterized in that, The transparent porous polymer scaffold (04) is configured as a disordered porous structure, the porosity of the transparent porous polymer scaffold (04) is 75%-90%, and the pore radius (R) of the pores (03) ranges from 10 to 40 μm.

9. The nested electrophoretic display structure according to claim 1, characterized in that, The hole (03) forms a columnar structure in the vertical direction to support the space of the electrophoretic layer.

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