Electrophoretic panel and display device

Abstract

The present invention discloses an electrophoretic panel and a display device, belonging to the field of display technology. The electrophoretic panel includes a first substrate, a second substrate, and an insulating liquid, in which a plurality of electrophoretic particles are arranged; further included between the first substrate and the second substrate: a display function layer located in the insulating liquid between the first substrate and the second substrate; the display function layer includes a plurality of pixel units and a plurality of hollow portions, the pixel units include a plurality of color resists of different colors, and the hollow portions penetrate the display function layer; a first electrode layer located on the side of the first substrate facing the second substrate, the first electrode layer including a plurality of first electrodes; a second electrode layer located on the side of the second substrate facing the first substrate, the second electrode layer including a plurality of second electrodes; and a reflective layer on the side of the color resist away from the second substrate. The display device includes the above-mentioned electrophoretic panel. The present invention can not only realize full-color display, but also improve the display brightness during full-color display, which is beneficial to improving display quality.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more particularly, to an electrophoretic panel and a display device. Background Art

[0002] As flat-panel displays develop, the market continues to pursue lighter, thinner, and more flexible displays, with electrophoretic displays (EPDs) being one of the most popular options. Electrophoretic displays typically utilize a front light or external light source, allowing users to see the display area appear black or white.

[0003] Color electrophoretic display devices generally use an applied electric field to adjust the positions of black and colored particles to create the desired display. There are two existing color electrophoretic display solutions: the first is to add a color filter structure. This structure, due to the multi-layer adhesion, results in low light transmittance, poor color saturation, and a certain degree of color shift, resulting in poor display effects. The second is to contain multiple colored particles in the capsule or microcup structure of the electrophoretic display layer. The position of the differently charged particles is controlled by voltage to achieve the purpose of color mixing, realizing the display of multiple colors. This display effect is good, but because the capsule contains three or more types of charged particles, the screen refresh time is longer.

[0004] Although the current traditional color electrophoretic display device with a filter layer can achieve color display, the light needs to be reflected multiple times by the filter layer and the electrophoretic particles, which easily causes the final display brightness to dim and the display effect to be poor.

[0005] Therefore, providing an electrophoretic panel and a display device that can achieve full-color display and improve the display brightness during full-color display, thereby improving the display quality, is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides an electrophoretic panel and a display device to solve the problem of low display brightness and poor display effect in the color electrophoretic display device in the prior art.

[0007] The present invention discloses an electrophoretic panel, comprising: a first substrate and a second substrate arranged opposite to each other, and an insulating liquid located between the first substrate and the second substrate, wherein a plurality of electrophoretic particles are arranged in the insulating liquid; a display function layer is further provided between the first substrate and the second substrate, wherein the display function layer is located in the insulating liquid between the first substrate and the second substrate; the display function layer comprises a plurality of pixel units and a plurality of hollow portions, wherein the pixel units comprise a plurality of color resists of different colors, and the hollow portions penetrate the display function layer; in a direction perpendicular to the plane where the first substrate is located, the hollow portions and the color resists do not overlap; a first electrode layer, wherein the first electrode layer is located on a side of the first substrate facing the second substrate, and comprises a plurality of first electrodes; a second electrode layer, wherein the second electrode layer is located on a side of the second substrate facing the first substrate, and comprises a plurality of second electrodes; and a reflective layer is further provided on a side of the color resist away from the second substrate.

[0008] Based on the same inventive concept, the present invention further discloses a display device, which includes the electrophoretic panel.

[0009] Compared with the prior art, the electrophoretic panel and display device provided by the present invention achieve at least the following beneficial effects:

[0010] The electrophoretic panel provided by the present invention includes a first substrate and a second substrate facing each other, and an insulating liquid containing a plurality of electrophoretic particles is sealed in a sealed box formed by the first substrate and the second substrate. A display function layer is also included between the first substrate and the second substrate, and the display function layer is located in the insulating liquid. The display function layer includes a plurality of pixel units, and the pixel units include a plurality of color resistors of different colors. The color resistors of different colors serve as a color filter structure for achieving a full-color display effect. In the present invention, the display function layer also includes a plurality of hollow portions, and the hollow portions penetrate the display function layer. The hollow portions can be understood as channels for allowing electrophoretic particles to move. Driven by the electric field formed by the opposing electrodes, the electrophoretic particles can move in the upper and lower spaces of the display function layer by passing through the hollow portions. In the present invention, the side of the color resist of the display function layer away from the second substrate also includes a reflective layer. The light-emitting surface of the electrophoretic panel, that is, the display surface, can be the surface of the second substrate away from the first substrate. The reflective layer is arranged on the side of the color resist away from the light-emitting surface of the electrophoretic panel. During display, a full-color display effect can be achieved through multiple color resists of different colors in the display function layer. Moreover, when the external ambient light or external light passes through the color resists of different colors in the display function layer as a light source, it can be directly reflected by the reflective layer located on the side of the color resist away from the second substrate, without the need for reflection through the electrophoretic particles between the display function layer and the first substrate. This can reduce brightness loss, which is beneficial to improving display brightness and ensuring display quality.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0012] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0014] Figure 1 is a schematic diagram of the planar structure of an electrophoretic panel provided by an embodiment of the present invention;

[0015] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the A-A' direction;

[0016] Figure 3 is another schematic diagram of the planar structure of the electrophoretic panel provided by an embodiment of the present invention;

[0017] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the B-B' direction;

[0018] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the C-C' direction;

[0019] Figure 6 yes Figure 1 Another cross-sectional structure schematic diagram along the A-A' direction;

[0020] Figure 7 yes Figure 1 Another cross-sectional structure schematic diagram along the A-A' direction;

[0021] Figure 8 yes Figure 1 Another cross-sectional structure schematic diagram along the A-A' direction;

[0022] Figure 9 yes Figure 1 and Figure 8 Schematic diagram of distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode;

[0023] Figure 10 yes Figure 1 and Figure 8 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown;

[0024] Figure 11 yes Figure 1 and Figure 8 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown;

[0025] Figure 12 yes Figure 1 and Figure 8 A schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown;

[0026] Figure 13 yes Figure 1 and Figure 8 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown;

[0027] Figure 14 yes Figure 1 and Figure 8 Schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the third working mode;

[0028] Figure 15 yes Figure 1 Another cross-sectional structure schematic diagram along the A-A' direction;

[0029] Figure 16 yes Figure 1 and Figure 15 Schematic diagram of distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode;

[0030] Figure 17 yes Figure 1 and Figure 15 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown;

[0031] Figure 18 yes Figure 1 and Figure 15 A schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown;

[0032] Figure 19 yes Figure 1 and Figure 15 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown;

[0033] Figure 20 yes Figure 1 and Figure 15 Schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the third working mode;

[0034] Figure 21 It is a schematic diagram of the planar structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the embodiments provided in the embodiments of the present invention may be combined with each other unless there is any contradiction.

[0040] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the planar structure of the electrophoretic panel provided by an embodiment of the present invention, Figure 2 yes Figure 1 The cross-sectional structural diagram along the A-A' direction in FIG. 1 shows an electrophoretic panel 000 provided in this embodiment, comprising: a first substrate 10 and a second substrate 20 disposed opposite to each other, and an insulating liquid 30 disposed between the first substrate 10 and the second substrate 20, wherein a plurality of electrophoretic particles 40 are disposed in the insulating liquid 30;

[0042] Also included between the first substrate 10 and the second substrate 20:

[0043] The display function layer 50 is located in the insulating liquid 30 between the first substrate 10 and the second substrate 20. The display function layer 50 includes a plurality of pixel units PX and a plurality of hollow portions LK. The pixel units PX include a plurality of color resists 500 of different colors. The hollow portions LK extend through the display function layer 50. In a direction Z perpendicular to the plane of the first substrate 10, the hollow portions LK do not overlap with the color resists 500.

[0044] A first electrode layer 60 , which is located on a side of the first substrate 10 facing the second substrate 20 . The first electrode layer 60 includes a plurality of first electrodes 601 ;

[0045] A second electrode layer 70 , which is located on a side of the second substrate 20 facing the first substrate 10 . The second electrode layer 70 includes a plurality of second electrodes 701 ;

[0046] The side of the color resist 500 away from the second substrate 20 further includes a reflective layer 80 .

[0047] Specifically, the electrophoretic panel 000 provided in this embodiment is used in an electrophoretic display device. The electrophoretic panel 000 may include a first substrate 10 and a second substrate 20 facing each other. An insulating liquid 30 containing a plurality of electrophoretic particles 40 is sealed within a sealed box formed by the first substrate 10 and the second substrate 20. Optionally, the plurality of electrophoretic particles 40 in the insulating liquid 30 may include at least black particles. The electrophoretic particles 40 may move in the insulating liquid 30 (it is understood that Figure 2The distribution of the electrophoretic particles 40 in the insulating liquid 30 is only schematic). A display function layer 50 is also included between the first substrate 10 and the second substrate 20. The display function layer 50 is located in the insulating liquid 30. The display function layer 50 includes a plurality of pixel units PX. The pixel unit PX includes a plurality of color resists 500 of different colors. The color resists 500 of different colors serve as a color filter structure to achieve a full-color display effect. Optionally, one pixel unit PX may include three color resists 500 of different colors, such as red color resist, green color resist, and blue color resist. Optionally, the first substrate 10 and the second substrate 20 may be substrates with high light transmittance, such as transparent inorganic materials such as quartz and glass, or transparent plastic materials such as polyimide. This embodiment is not limited to this. It is only necessary that the first substrate 10 and the second substrate 20 have high transparency to ensure the light transmission effect. A first electrode layer 60 is provided on the side of the first substrate 10 facing the second substrate 20. The first electrode layer 60 includes a plurality of first electrodes 601. A second electrode layer 70 is provided on the side of the second substrate 20 facing the first substrate 10. The second electrode layer 70 includes a plurality of second electrodes 701. The first electrodes 601 of the first electrode layer 60 and the second electrodes 701 of the second electrode layer 70 are provided above and below the display function layer 50. By applying voltages to the first electrodes 601 and the second electrodes 701, an electric field is formed to drive the electrophoretic particles 40 to move, so that The electrophoretic particles 40 are distributed in different areas of the pixel unit PX. For example, when the electrophoretic particles 40 including black particles are between a certain color resist 500 and the second substrate 20, the position of the color resist 500 is black, that is, it is in the off state. When the electrophoretic particles 40 including black particles move between a certain color resist 500 and the first substrate 10, the position of the color resist 500 is in the on state, that is, the color of the color resist 500 is displayed. The black particles move between the first substrate 10 and the display function layer 50 on the backlight side, without causing a light blocking effect on the display, thereby achieving the display effect of the electrophoretic panel 000. In this embodiment, the display function layer 50 also includes a plurality of hollow portions LK. The hollow portions LK penetrate the display function layer 50. The hollow portions LK can be understood as channels for the electrophoretic particles 40 to move. Driven by the electric field formed by the first electrode 601 and the second electrode 701, the electrophoretic particles 40 can move in the upper and lower spaces of the display function layer 50 by passing through the hollow portions LK. In this embodiment, the hollow portion LK is arranged in a direction Z perpendicular to the plane of the first substrate 10, and the color resist 500 does not overlap, thereby preventing the hollow portion LK from being cut out of the display function layer 50 and affecting the layout of the color resist 500. Optionally, the first electrode layer 60 and the second electrode layer 70 can be made of a transparent conductive material such as ITO (Indium Tin Oxides) to ensure that the first electrode layer 60 and the second electrode layer 70 have good conductivity and transparency.

[0048] In the prior art, when an electrophoretic panel with a color filter structure is displaying, ambient light or external light needs to pass through the filter structure, then be reflected by electrophoretic particles such as white particles, and then pass through the filter structure again, resulting in serious brightness loss. The final display brightness becomes dim, which greatly affects the display quality.

[0049] In order to solve the above problems, in this embodiment, the color resist 500 of the display function layer 50 is further provided with a reflective layer 80 on the side away from the second substrate 20. The light emitting surface 000E of the electrophoretic panel 000, that is, the display surface, can be the surface of the second substrate 20 away from the first substrate 10. The reflective layer 80 is arranged on the side of the color resist 500 away from the second substrate 20, that is, the reflective layer 80 is arranged on the side of the color resist 500 away from the light emitting surface 000E of the electrophoretic panel 000. When the electrophoretic panel 000 is displaying, a full-color display effect can be achieved through the multiple color resists 500 of different colors in the display function layer 50. When the external ambient light or external light passes through the color resists 500 of different colors of the display function layer 50 as a light source, it can be directly reflected by the reflective layer 80 located on the side of the color resist 500 away from the second substrate 20, without being reflected by the electrophoretic particles 40 between the display function layer 50 and the first substrate 10, thereby reducing brightness loss, which is beneficial to improving display brightness and ensuring display quality.

[0050] It is understood that this embodiment does not limit the composition of the insulating liquid 30, and the insulating liquid 30 has electrical insulating properties. Furthermore, optionally, the insulating liquid 30 may have low viscosity, which is beneficial for improving the migration characteristics of the electrophoretic particles 40 in the insulating liquid 30. Furthermore, since the viscous resistance of the electrophoretic particles 40 is reduced during migration, the energy required to migrate the electrophoretic particles is reduced, thereby reducing power consumption.

[0051] It should be noted that the figure of this embodiment only illustrates the structure of the electrophoretic panel 000 for example. In specific implementation, the structure of the electrophoretic panel includes but is not limited to this, and may also include other structures capable of electrophoretic color display effects, such as a protective layer, etc. This embodiment is not limited here, and the specific structure can be understood by referring to the structure of the electrophoretic display device in the relevant technology.

[0052] Optional, such as Figure 1 and Figure 2 As shown, a light shielding portion 90 is included between two adjacent color resists 500 of different colors to prevent color mixing.

[0053] Optional, such as Figure 3 and Figure 4 As shown, Figure 3 is another schematic diagram of the planar structure of the electrophoretic panel provided by an embodiment of the present invention. Figure 4 yes Figure 3In the cross-sectional structural diagram along the B-B' direction, a sealant 1000 may be provided around the periphery of the first substrate 10 and the second substrate 20 to ensure the sealing of the first substrate 10 and the second substrate 20. A plurality of support columns 100 are also included between the first substrate 10 and the second substrate 20 to provide support for the first substrate 10 and the second substrate 20.

[0054] Further optional, such as Figure 3 and Figure 4 As shown, the orthographic projection of the support column 100 on the plane where the first substrate 10 is located is located between the orthographic projections of the two adjacent hollow portions LK on the plane where the first substrate 10 is located. The support column 100 is arranged between the two adjacent hollow portions LK, which can make the support column 100 as close to the position of the dug channel as possible to avoid insufficient strength of the film layer at the hollowed-out part of the channel, which is beneficial to improve the strength of the film layer and ensure the display effect.

[0055] Further optional, such as Figure 3 and Figure 5 As shown, Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the C-C' direction, the same support column 100 includes a first support portion 100A and a second support portion 100B. In the direction Z perpendicular to the plane where the first substrate 10 is located, the first support portion 100A and the second support portion 100B overlap with each other, the first support portion 100A is located between the display function layer 50 and the first substrate 10, and the second support portion 100B is located between the display function layer 50 and the second substrate 20, that is, a support column 100 at the same position can be formed by stacking the first support portion 100A and the second support portion 100B located above and below the display function layer 50, respectively, to ensure the supporting effect of the display function layer 50 on both sides of the first substrate 10 and the second substrate 20.

[0056] Optional, such as Figure 1 and Figure 2 As shown, the orthographic projection of the first electrode 601 on the plane where the first substrate 10 is located at least partially overlaps with the orthographic projection of a color resist 500 on the plane where the first substrate 10 is located; the orthographic projection of the second electrode 701 on the plane where the first substrate 10 is located at least partially overlaps with the orthographic projection of a color resist 500 on the plane where the first substrate 10 is located. The orthographic projection of the first electrode 601 on the plane where the first substrate 10 is located at least partially overlaps with the orthographic projection of the second electrode 701 on the plane where the first substrate 10 is located. That is, the color resists 500 of the display functional layer 50 correspond one-to-one with the first electrode 601 and the second electrode 701, respectively. This allows for individual control of the electric field at each color resist 500 position, and the electrophoretic particles 40 can be individually distributed on a single color resist 500 to achieve different display colors, thereby achieving a full-color display effect.

[0057] It is understood that the present embodiment does not specifically limit the size and shape of the first electrode 601 and the second electrode 701. The shapes of the first electrode 601 and the second electrode 701 can be set according to the shape of the color resist 500. For example, if the color resist 500 is a long strip, the first electrode 601 and the second electrode 701 can also be a long strip. The size of the first electrode 601 and the second electrode 701 can be slightly smaller than the shape of the color resist 500, or the size of the first electrode 601 and the second electrode 701 can be substantially the same as the size of the color resist 500. This embodiment does not limit this.

[0058] In some optional embodiments, please continue to refer to Figure 1 and Figure 2 In this embodiment, the reflective layer 80 is in direct contact with the color resist 500. Optionally, the reflective layer 80 may be a metal coating, such as a metal aluminum coating or a metal silver coating with high reflectivity, which is not limited in this embodiment.

[0059] In this embodiment, the reflective layer 80 located on the side of the color resist 500 away from the second substrate 20 is in direct contact with the surface of the color resist 500 away from the second substrate 20. That is, there is no other structure between the reflective layer 80 and the color resist 500. This can further reduce the amount of light loss when external ambient light or external light is incident. After passing through the color resist 500 of different colors in the display function layer 50, the light is directly reflected by the reflective layer 80 in contact with the color resist 500, avoiding the increase of the propagation path, further reducing the brightness loss, better improving the display brightness, and ensuring the display quality.

[0060] In some optional embodiments, please continue to refer to Figure 1 and Figure 2 In this embodiment, the orthographic projection of the hollow portion LK on the plane where the first substrate 10 is located is located between the orthographic projections of two adjacent pixel units PX on the plane where the first substrate 10 is located.

[0061] This embodiment explains that the hollow portion LK defined in the display function layer 50 can be excavated between two adjacent pixel units PX. Specifically, the orthographic projection of the hollow portion LK on the plane of the first substrate 10 is located between the orthographic projections of the two adjacent pixel units PX. This prevents the hollow portions LK from being too densely packed and affecting the film strength when they are defined between two adjacent color resists 500. It also prevents the hollow portions LK from being defined between two pixel units PX, which would result in multiple pixel units PX sharing a single hollow portion LK and affect the response time of the electrophoretic particles 40 passing through the hollow portion LK. Therefore, in this embodiment, defining the hollow portion LK between two adjacent pixel units PX not only improves the film strength but also ensures the sensitivity of the electrophoretic particles 40 moving within the upper and lower spaces of the display function layer 50. Providing at least one hollow portion LK around each pixel unit PX reduces the response time of the electrophoretic particles 40.

[0062] In some optional embodiments, please refer to Figure 1 and Figure 6 , Figure 6 yes Figure 1 Another cross-sectional structural diagram along the AA' line, in this embodiment, the side of the display function layer 50 facing the first substrate 10 includes a first protective layer 501, and the first protective layer 501 includes a plurality of first protruding structures 5011;

[0063] The display function layer 50 includes a second protective layer 502 on a side facing the second substrate 20 . The second protective layer 502 includes a plurality of second protrusion structures 5021 .

[0064] The orthographic projection of the first protruding structure 5011 on the plane of the first substrate 10 at least partially overlaps with the orthographic projection of the color resist 500 on the plane of the first substrate 10, and the orthographic projection of the second protruding structure 5021 on the plane of the first substrate 10 at least partially overlaps with the orthographic projection of the color resist 500 on the plane of the first substrate 10. Optionally, the orthographic projection of the first protruding structure 5011 on the plane of the first substrate 10 at least partially overlaps with the orthographic projection of the three color resists 500 of a pixel unit PX on the plane of the first substrate 10, and the orthographic projection of the second protruding structure 5021 on the plane of the first substrate 10 at least partially overlaps with the orthographic projection of the three color resists 500 of a pixel unit PX on the plane of the first substrate 10.

[0065] This embodiment explains that protective layers can be provided on both the upper and lower sides of the display function layer 50 in the insulating liquid 30. The side of the display function layer 50 facing the first substrate 10 includes a first protective layer 501, and the side of the display function layer 50 facing the second substrate 20 includes a second protective layer 502, so as to protect the color resist structure and prevent the color resist 500 from being affected by long-term use. In this embodiment, the first protective layer 501 includes a plurality of first protruding structures 5011, and the second protective layer 502 includes a plurality of second protruding structures 5021. The first protruding structures 5011 and the second protruding structures 5021 can correspond one to one with the color resist 500, or as shown in FIG. Figure 6 As shown, the first protrusion structure 5011 and the second protrusion structure 5021 can correspond one-to-one to a pixel unit PX, thereby reducing the number of protrusion structures provided on the first protective layer 501 and the second protective layer 502, thereby saving process time. Providing the first protrusion structure 5011 and the second protrusion structure 5021 at the pixel unit PX position can facilitate the electrophoretic particles 40 between the display function layer 50 and the first substrate 10 to smoothly pass through the hollow portion LK along the first protrusion structure 5011 to move between the display function layer 50 and the second substrate 20 or to other locations when the display screen is switched. The electrophoretic particles 40 between the display function layer 50 and the second substrate 20 can also smoothly pass through the hollow portion LK along the second protrusion structure 5021 to move between the display function layer 50 and the first substrate 10 or to other locations. This can help improve the response speed of the electrophoretic particles 40 in the insulating liquid 30 and avoid affecting the display quality when the screen switches.

[0066] Optional, such as Figure 6 As shown, the surface of the first protrusion structure 5011 facing the first substrate 10 is a curved surface, and the surface of the second protrusion structure 5021 facing the second substrate 20 is a curved surface. The protrusion structure with a smooth curved surface can provide a smoother movement path for the electrophoretic particles 40, avoiding the obstruction of the movement of the electrophoretic particles 40 by the non-smooth protrusion structure, which is beneficial to further improve the display quality when switching screens.

[0067] Optionally, the first protective layer 501 and the second protective layer 502 in this embodiment can be a passivation material, or a polyethylene terephthalate plastic or a polyimide material, etc. Further optionally, the second protective layer 502 located on the side of the display function layer 50 facing the second substrate 20, that is, facing the light-emitting surface 000E of the electrophoretic panel 000, needs to be made of a transparent material, which is beneficial to ensure the light transmittance and improve the display effect on the side of the light-emitting surface 000E of the electrophoretic panel 000.

[0068] In some optional embodiments, please refer to Figure 1 and Figure 7 , Figure 7 yes Figure 1 Another schematic cross-sectional structure diagram along the A-A' direction. In this embodiment, in the direction Z perpendicular to the plane of the first substrate 10, the maximum thickness of the first protrusion structure 5011 is D11, and the distance between the display function layer 50 and the first substrate 10 is D1, where D11 ≤ 0.5D1.

[0069] In a direction Z perpendicular to the plane of the first substrate 10 , the maximum thickness of the second protruding structure 5021 is D21 , the distance between the display function layer 50 and the second substrate 20 is D2 , and D21 ≤ 0.5D2 .

[0070] This embodiment explains that when the surface of the first protruding structure 5011 facing the first substrate 10 is a curved surface, and the surface of the second protruding structure 5021 facing the second substrate 20 is a curved surface, and the protruding structure with a smooth curved surface provides a smoother moving path for the electrophoretic particles 40, the bending curvature of the protruding structure can satisfy the maximum thickness D11 of the first protruding structure 5011 is less than or equal to half of the distance D1 between the display function layer 50 and the first substrate 10, and the maximum thickness D21 of the second protruding structure 5021 is less than or equal to half of the distance D2 between the display function layer 50 and the second substrate 20, wherein the maximum thickness D11 of the first protruding structure 5011 can be understood as the thickness of the first protruding structure 5011 at the position closest to the first substrate 10. The maximum thickness D21 of the second protruding structure 5021 can be understood as the thickness of the second protruding structure 5021 at the position closest to the second substrate 20, which can avoid the maximum thickness D11 of the first protruding structure 5011 being too large, resulting in too small a movable space for the electrophoretic particles 40 between the first substrate 10 and the first protruding structure 5011, affecting the response time of the electrophoretic particles 40, and thus helping to ensure the moving speed of the electrophoretic particles 40 at the hollow portion LK. Similarly, it can also avoid the maximum thickness D21 of the second protruding structure 5021 being too large, resulting in too small a movable space for the electrophoretic particles 40 between the second substrate 20 and the second protruding structure 5021, affecting the response time of the electrophoretic particles 40, and thus helping to ensure the moving speed of the electrophoretic particles 40 at the hollow portion LK. Therefore, in this embodiment, the maximum thickness D11 of the first protruding structure 5011 is set to be less than or equal to half of the distance D1 between the display function layer 50 and the first substrate 10, and the maximum thickness D21 of the second protruding structure 5021 is less than or equal to half of the distance D2 between the display function layer 50 and the second substrate 20. This can ensure that under the control of the electric field, the response speed of the electrophoretic particles 40 in the insulating liquid 30 is improved, thereby enhancing the display effect.

[0071] In some optional embodiments, please refer to Figure 1 and Figure 8 , Figure 8 yes Figure 1Another schematic cross-sectional structure diagram along the AA' line, in this embodiment, the orthographic projection of at least part of the first electrode 601 on the plane where the first substrate 10 is located overlaps with the orthographic projection of the hollow portion LK on the plane where the first substrate 10 is located;

[0072] The orthographic projection of at least a portion of the second electrode 701 on the plane where the first substrate 10 is located overlaps with the orthographic projection of the hollow portion LK on the plane where the first substrate 10 is located.

[0073] This embodiment explains that the first electrode 601 and the second electrode 701 can also be provided at the position of the hollow portion LK of the display function layer 50, that is, the hollowed-out area of the display function layer 50. Optionally, the electrode at the position of the hollow portion LK and the electrode at the position of the color resist 500 can be controlled separately. In the pixel unit PX, the multiple color resists 500 include at least the first color resist 500A, and the first color resist 500A can be any one of the blue color resist, the red color resist, and the green color resist. The plurality of first electrodes 601 include a first sub-electrode 6011 and a second sub-electrode 6012, wherein the orthographic projection of the first sub-electrode 6011 on the plane where the first substrate 10 is located overlaps with the orthographic projection of the first color resist 500A on the plane where the first substrate 10 is located, and the orthographic projection of the second sub-electrode 6012 on the plane where the first substrate 10 is located overlaps with the orthographic projection of the hollow portion LK on the plane where the first substrate 10 is located; the plurality of second electrodes 701 include a third sub-electrode 7011 and a fourth sub-electrode 7012, wherein the orthographic projection of the third sub-electrode 7011 on the plane where the first substrate 10 is located overlaps with the orthographic projection of the first color resist 500A on the plane where the first substrate 10 is located, and the fourth sub-electrode 7012 on the plane where the first substrate 10 is located overlaps The orthographic projection of the hollow portion LK overlaps with the orthographic projection of the hollow portion LK on the plane where the first substrate 10 is located, the first sub-electrode 6011 of the first electrode layer 60 and the third sub-electrode 7011 of the second electrode layer 70 correspond one-to-one at each color resistor 500 (such as the first color resistor 500A), and the second sub-electrode 6012 of the first electrode layer 60 and the fourth sub-electrode 7012 of the second electrode layer 70 correspond one-to-one at the hollow portion LK, that is, the first electrode 601 and the second electrode 701 at the position of the hollow portion LK can form an electric field different from that at the position of the color resistor 500 through the voltage transmitted by themselves, so as to realize the distribution control of the electrophoretic particles 40 in different regions, and then realize the grayscale adjustment of different regions when the electrophoretic panel 000 is displayed.

[0074] It can be understood that the shape of the first electrode 601 and the second electrode 701 at the position of the color resist 500 in this embodiment can be consistent with the shape of the color resist 500, and the first electrode 601 and the second electrode 701 at the position of the hollow portion LK can be consistent with the shape of the hollow portion LK, so that an electric field that drives the electrophoretic particles 40 to move can be formed in different regions and different area ranges.

[0075] In this embodiment, the first electrode 601 and the second electrode 701 at the position of the hollow portion LK can form an electric field different from that at the position of the color resist 500 through the voltage transmitted by the first electrode 601 and the second electrode 701, so as to achieve distribution control of the electrophoretic particles 40 in different regions, thereby achieving grayscale adjustment of different regions when the electrophoretic panel 000 displays. Specifically, the electrophoretic panel includes at least a first operating mode and a second operating mode. It will be understood that in this embodiment, the electrophoretic particles 40 are negatively charged black particles.

[0076] Please refer to Figure 9 、 Figure 10 and Figure 11 , Figure 9 yes Figure 1 and Figure 8 The schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown. Figure 10 yes Figure 1 and Figure 8 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown. Figure 11 yes Figure 1 and Figure 8 Another schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first operating mode is shown. In the first operating mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the third sub-electrode 7011 are in opposite phases, and the electrical signal transmitted on the second sub-electrode 6012 and the electrical signal transmitted on the fourth sub-electrode 7012 are in opposite phases.

[0077] like Figure 9 As shown, the electrical signal transmitted on the first sub-electrode 6011 at the position of the first color resist 500A is a positive potential signal, the electrical signal transmitted on the third sub-electrode 7011 is a negative potential signal, the electrical signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a positive potential signal, and the electrical signal transmitted on the fourth sub-electrode 7012 is a negative potential signal. Then, the negatively charged black particles will all move to the side close to the first substrate 10, and there will be no black particles between the display function layer 50 and the second substrate 20. At this time, the light emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A, and the external ambient light or external light can be directly reflected by the reflective layer 80 located on the side of the first color resist 500A away from the second substrate 20 after passing through the first color resist 500A of the display function layer 50 as a light source, without being reflected by the electrophoretic particles 40 between the first color resist 500A and the first substrate 10, thereby reducing brightness loss, which is beneficial to improving display brightness and ensuring display quality.

[0078] Or, as Figure 10As shown, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resist 500A is a negative potential signal, the electric signal transmitted on the third sub-electrode 7011 is a positive potential signal, the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a negative potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 is a positive potential signal. Then, the negatively charged black particles will all move to the side close to the second substrate 20, and there will be no black particles between the display functional layer 50 and the first substrate 10. At this time, the light-emitting surface 000E of the electrophoretic panel 000 can display black, and the color of the first color resist 500A is not displayed, that is, the electrophoretic panel 000 is in the off state at this time.

[0079] Or, as Figure 11 As shown, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resist 500A is a negative potential signal, the electric signal transmitted on the third sub-electrode 7011 is a positive potential signal, the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a positive potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 is a negative potential signal. Then, the negatively charged black particles at the position of the hollow portion LK will move to the side close to the first substrate 10, and the negatively charged black particles at the position of the first color resist 500A will move to the side close to the second substrate 20, blocking the color irradiated to the first color resist 500A. The negatively charged black particles at the position of the hollow portion LK are away from the light emitting surface 000E of the electrophoretic panel 000, so the light emitting surface 000E side of the electrophoretic panel 000 can display gray.

[0080] Please refer to Figure 12 and Figure 13 , Figure 12 yes Figure 1 and Figure 8 The schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown. Figure 13 yes Figure 1 and Figure 8 Another distribution diagram of electrophoretic particles in a partial area of the electrophoretic panel under the second working mode is shown. In the second working mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the third sub-electrode 7011 are both floating signals, and the electrical signal transmitted on the second sub-electrode 6012 and the electrical signal transmitted on the fourth sub-electrode 7012 have opposite phases.

[0081] like Figure 12As shown, both the first sub-electrode 6011 and the third sub-electrode 7011 at the position of the first color resist 500A are floating signals (indicated by the symbol 0 in the figure), the electrical signal transmitted by the second sub-electrode 6012 at the position of the hollow portion LK is a positive potential signal, and the electrical signal transmitted by the fourth sub-electrode 7012 is a negative potential signal. Then, the negatively charged black particles will all move to the side of the hollow portion LK close to the first substrate 10. There are no black particles at the position of the first color resist 500A. At this time, there are no black particles between the first color resist 500A and the second substrate 20. The light emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A. Moreover, because the black particles at the position of the hollow portion LK are far away from the light emitting surface 000E of the electrophoretic panel 000, the black particles have little effect on the color display of the first color resist 500A.

[0082] like Figure 13 As shown, the first sub-electrode 6011 and the third sub-electrode 7011 at the position of the first color resist 500A are both floating signals, the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a negative potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 is a positive potential signal, then the black particles with negative charge will all move to the side of the hollow portion LK close to the second substrate 20, and there are no black particles at the position of the first color resist 500A. At this time, there will be no black particles between the first color resist 500A and the second substrate 20, and the light emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A; however, since the black particles at the position of the hollow portion LK are close to the light emitting surface 000E of the electrophoretic panel 000, the black particles have a greater influence on the color display of the first color resist 500A, compared with Figure 12 The display brightness of the first color resist 500A is shown. Figure 13 The display brightness of the first color resistor 500A is darker. For example, if the first color resistor 500A is red, Figure 12 The display brightness is represented by R+, then Figure 13 The display brightness is represented by R, or if Figure 12 The display brightness is expressed as R++, then Figure 13 The display brightness is represented by R+, or if Figure 12 The display brightness is represented by R, then Figure 13 The display brightness is represented by R- to distinguish Figure 13 The display brightness of the first color resist 500A is darker.

[0083] Optional, please refer to Figure 1 、 Figure 8 and Figure 14 , Figure 14 yes Figure 1 and Figure 8FIG. 1 is a schematic diagram showing the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the third operating mode. The electrophoretic panel 000 in this embodiment may further include a third operating mode. In the third operating mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the second sub-electrode 6012 are in opposite phases, and the electrical signal transmitted on the third sub-electrode 7011 and the electrical signal transmitted on the fourth sub-electrode 7012 are both floating signals. The electrophoretic particles 40 are still described as negatively charged black particles.

[0084] like Figure 14 As shown, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resist 500A is a positive potential signal, the electric signal transmitted on the third sub-electrode 7011 is a floating signal (indicated by symbol 0 in the figure), the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a negative potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 is a floating signal (indicated by symbol 0 in the figure). At this time, the black particles with negative charge all move to between the first color resist 500A and the first substrate 10, and there are no black particles at the position of the hollow portion LK. There are no black particles between 0A and the second substrate 20. The electrophoretic panel 000 displays the color of the first color resist 500A, and the external ambient light or external light passes through the first color resist 500A of the display function layer 50 as a light source. It can be directly reflected by the reflective layer 80 located on the side of the first color resist 500A away from the second substrate 20, without the need to be reflected by the electrophoretic particles 40 between the first color resist 500A and the first substrate 10, thereby reducing brightness loss, which is beneficial to improving display brightness and ensuring display quality.

[0085] It can be understood that the above embodiments are merely examples of several grayscale adjustment methods that can be implemented by the electrophoretic panel 000. In specific implementations, they include but are not limited to these. Alternatively, more grayscale brightness can be achieved by adjusting the voltage values on the first sub-electrode 6011 and the third sub-electrode 7011 at the position of the first color resistor 500A, and adjusting the voltage values on the second sub-electrode 6012 and the fourth sub-electrode 7012 at the position of the hollow portion LK. This embodiment will not be described in detail here.

[0086] In some optional embodiments, please refer to Figure 1 and Figure 15 , Figure 15 yes Figure 1 Another cross-sectional structural diagram along the AA' direction, in this embodiment, the plurality of electrophoretic particles 40 include black particles 401 and white particles 402 with opposite charges ( Figure 15 The black particles 401 are negatively charged, and the white particles 402 are positively charged.

[0087] This embodiment explains that in the electrophoretic panel 000, the multiple electrophoretic particles 40 located in the insulating liquid 30 may include positively charged white particles 402 and negatively charged black particles 401, so that the electrophoretic particles 40 as a whole can remain electrically neutral. When the electrophoretic panel 000 is not in operation, it does not exhibit an electric potential to the outside world, which can prevent static electricity from accumulating on the outer surface of the electrophoretic panel 000 and causing damage to the panel, thereby helping to increase the service life of the panel.

[0088] Optional, such as Figure 1 、 Figure 15 and Figure 16 and Figure 17 As shown, Figure 16 yes Figure 1 and Figure 15 The schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the first working mode is shown. Figure 17 yes Figure 1 and Figure 15 Another distribution diagram of electrophoretic particles in a partial area of the electrophoretic panel under the first working mode is shown. In the first working mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the third sub-electrode 7011 are opposite in phase, and the electrical signal transmitted on the second sub-electrode 6012 and the electrical signal transmitted on the fourth sub-electrode 7012 are opposite in phase.

[0089] like Figure 16As shown, the electric signal transmitted on the first sub-electrode 6011 and the electric signal transmitted on the second sub-electrode 6012 are opposite in phase, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resistor 500A is a negative potential signal, part of the black particles 401 are located between the first color resistor 500A and the third sub-electrode 7011, part of the white particles 402 are located between the first color resistor 500A and the first sub-electrode 6011, and part of the white particles 402 are located on the side of part of the black particles 401 close to the fourth sub-electrode 7012; that is, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resistor 500A is a negative potential signal, then the electric signal transmitted on the third sub-electrode 7011 at the position of the first color resistor 500A is a positive potential signal, and the second sub-electrode 7011 at the position of the hollow part LK is a positive potential signal. The electrical signal transmitted on the second sub-electrode 6012 is a positive potential signal, and the electrical signal transmitted on the fourth sub-electrode 7012 at the hollow portion LK position is a negative potential signal. At this time, at the position of the first color resist 500A, the black particles 401 are on the side of the first color resist 500A facing the second substrate 20, and the white particles 402 are on the side of the first color resist 500A facing the first substrate 10. The black particles 401 block the light irradiated on the first color resist 500A above the first color resist 500A, and the first color resist 500A position displays black; at the position of the hollow portion LK, the black particles 401 are on the side closer to the first substrate 10, and the white particles 402 are on the side closer to the second substrate 20. At this time, the hollow portion LK position displays white, which makes the electrophoretic panel 000 display gray.

[0090] like Figure 17As shown, the electric signal transmitted on the first sub-electrode 6011 is the same as the electric signal transmitted on the second sub-electrode 6012, the electric signal transmitted on the first sub-electrode 6011 is a negative potential signal, part of the black particles 401 are located between the first color resistor 500A and the third sub-electrode 7011, part of the white particles 402 are located between the first color resistor 500A and the first sub-electrode 6011, and part of the white particles 402 are located on the side of part of the black particles 401 close to the second sub-electrode 6012; that is, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resistor 500A is a negative potential signal, then the electric signal transmitted on the third sub-electrode 7011 at the position of the first color resistor 500A is a positive potential signal, and the second sub-electrode 6012 at the position of the hollow portion LK is positive. The electrical signal transmitted on it is a negative potential signal, and the electrical signal transmitted on the fourth sub-electrode 7012 at the position of the hollow portion LK is a positive potential signal. At this time, at the position of the first color resist 500A, the black particles 401 are on the side of the first color resist 500A facing the second substrate 20, and the white particles 402 are on the side of the first color resist 500A facing the first substrate 10. The black particles 401 block the light irradiated on the first color resist 500A above the first color resist 500A, and the first color resist 500A position displays black; at the position of the hollow portion LK, the black particles 401 are on the side closer to the second substrate 20, and the white particles 402 are on the side closer to the first substrate 10. At this time, the hollow portion LK position displays black, which makes the electrophoretic panel 000 display black as a whole.

[0091] Optional, such as Figure 1 、 Figure 15 and Figure 18 and Figure 19 As shown, Figure 18 yes Figure 1 and Figure 15 The schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the second working mode is shown. Figure 19 yes Figure 1 and Figure 15 Another distribution diagram of electrophoretic particles in a partial area of the electrophoretic panel under the second working mode is shown. In the second working mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the third sub-electrode 7011 are both floating signals, and the electrical signal transmitted on the second sub-electrode 6012 and the electrical signal transmitted on the fourth sub-electrode 7012 have opposite phases.

[0092] like Figure 18As shown, the electric signal transmitted on the second sub-electrode 6012 is a negative potential signal, there is no electrophoretic particle 40 between the first color resist 500A and the first sub-electrode 6011, there is no electrophoretic particle 40 between the first color resist 500A and the third sub-electrode 7011, and some white particles 402 are located on the side of some black particles 401 close to the second sub-electrode 6012; that is, the first sub-electrode 6011 and the third sub-electrode 7011 at the position of the first color resist 500A are both floating signals (indicated by the symbol 0 in the figure), the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a negative potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 at the position of the hollow portion LK is a positive potential signal. At this time, at the position of the hollow portion LK, the black particles 401 are on the side closer to the second substrate 20, and the white particles 402 are on the side closer to the first substrate 10. At this time, the hollow portion LK position It displays black, and at the position of the first color resist 500A, there is no electrophoretic particle 40 between the first color resist 500A and the first sub-electrode 6011, and there is no electrophoretic particle 40 between the first color resist 500A and the third sub-electrode 7011. At this time, the light-emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A, and the external ambient light or the external light can be directly reflected by the reflective layer 80 located on the side of the first color resist 500A away from the second substrate 20 after passing through the first color resist 500A of the display function layer 50, without the need to be reflected by the electrophoretic particle 40 between the first color resist 500A and the first substrate 10, thereby reducing the brightness loss, which is beneficial to improving the display brightness and ensuring the display quality, so that the electrophoretic panel 000 can display the color of the first color resist 500A as a whole. For example, if the first color resist 500A is a red color resist, then Figure 18 The display brightness can be represented by R.

[0093] like Figure 19As shown, the electric signal transmitted on the second sub-electrode 6012 is a positive potential signal, there are no electrophoretic particles between the first color resist 500A and the first sub-electrode 6011, and there are no electrophoretic particles between the first color resist 500A and the third sub-electrode 7011. Some black particles 401 are located on the side of some white particles 402 close to the second sub-electrode 6012; that is, the first sub-electrode 6011 and the third sub-electrode 7011 at the position of the first color resist 500A are both floating signals (indicated by the symbol 0 in the figure), the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a positive potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 at the position of the hollow portion LK is a negative potential signal. At this time, at the position of the hollow portion LK, the black particles 401 are on the side closer to the first substrate 10, and the white particles 402 are on the side closer to the second substrate 20. The empty portion LK position displays white, and at the position of the first color resist 500A, there are no electrophoretic particles 40 between the first color resist 500A and the first sub-electrode 6011, and there are no electrophoretic particles 40 between the first color resist 500A and the third sub-electrode 7011. At this time, the light-emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A, and the external ambient light or external light can be directly reflected by the reflective layer 80 located on the side of the first color resist 500A away from the second substrate 20 after passing through the first color resist 500A of the display function layer 50, without the need to be reflected by the electrophoretic particles 40 between the first color resist 500A and the first substrate 10, thereby reducing brightness loss, which is beneficial to improving display brightness and ensuring display quality, so that the electrophoretic panel 000 as a whole displays the color of the first color resist 500A.

[0094] It is understandable that if the first color resist 500A is a red color resist, then Figure 18 The display brightness can be expressed as R, Figure 19 Since the white particles 402 at the hollow portion LK are close to the light-emitting surface 000E of the electrophoretic panel 000, the red color resist is reflected by the white particles 402 and mixed with the white light, thereby enhancing the brightness of the first color resist 500A. Figure 18 In the example, even though the red color block of the first color block 500 reflects light, the black particles 401 are located next to it and the black particles 401 do not reflect light. Figure 18 If R is used to represent the display brightness, then Figure 19 The display brightness in can be understood as R++, that is, Figure 19 The light reflection effect of the white particles 402 close to the second substrate 20 enhances the brightness of the first color resist 500A, thereby improving the display brightness.

[0095] Optional, such as Figure 1 、 Figure 15 and Figure 20 As shown, Figure 20 yes Figure 1 and Figure 15 Schematic diagram of the distribution of electrophoretic particles in a partial area of the electrophoretic panel in the third working mode. In the third working mode, the electrical signal transmitted on the first sub-electrode 6011 and the electrical signal transmitted on the second sub-electrode 6012 are in opposite phases, and the electrical signal transmitted on the third sub-electrode 7011 and the electrical signal transmitted on the fourth sub-electrode 7012 are both floating signals (indicated by symbol 0 in the figure). Figure 20 As shown, the electric signal transmitted on the first sub-electrode 6011 is a positive potential signal, the electric signal transmitted on the second sub-electrode 6012 is a negative potential signal, the electric signal transmitted on the third sub-electrode 7011 and the electric signal transmitted on the fourth sub-electrode 7012 are both floating signals, there is no electrophoretic particle 40 between the first color resistor 500A and the third sub-electrode 7011, some black particles 401 are located between the first color resistor 500A and the first sub-electrode 6011, and the second sub-electrode 6012 and the fourth sub-electrode 7012 are both floating signals. There are only some white particles 402 between the electrodes 7012, and the white particles 402 are close to the second sub-electrode 6012; that is, the electric signal transmitted on the first sub-electrode 6011 at the position of the first color resistor 500A is a positive potential signal, the electric signal transmitted on the third sub-electrode 7011 is a floating signal (indicated by symbol 0 in the figure), the electric signal transmitted on the second sub-electrode 6012 at the position of the hollow portion LK is a negative potential signal, and the electric signal transmitted on the fourth sub-electrode 7012 at the position of the hollow portion LK is a floating signal (indicated by symbol 0 in the figure). (as shown), at this time, at the position of the hollow portion LK, there are only white particles 402, and the white particles 402 are on the side closer to the first substrate 10. At this time, the hollow portion LK displays white, and at the position of the first color resist 500A, there are no electrophoretic particles 40 between the first color resist 500A and the third sub-electrode 7011, and there are black particles 401 between the first color resist 500A and the first sub-electrode 6011. At this time, the light-emitting surface 000E of the electrophoretic panel 000 can display the color of the first color resist 500A, and the external ambient light or external light can be directly reflected by the reflective layer 80 located on the side of the first color resist 500A away from the second substrate 20 after passing through the first color resist 500A of the display function layer 50, without being reflected by the electrophoretic particles 40 between the first color resist 500A and the first substrate 10, thereby reducing brightness loss, which is beneficial to improving display brightness and ensuring display quality, so that the electrophoretic panel 000 as a whole displays the color of the first color resist 500A.

[0096] It is understandable that if the first color resist 500A is a red color resist, Figure 18 Even though the red color block of the first color block 500 reflects light, the black particles 401 are located next to it and the black particles 401 do not reflect light. Figure 18 The display brightness can be represented by R; Figure 20Since the white particles 402 at the hollow portion LK are far away from the light emitting surface 000E of the electrophoretic panel 000 and close to the first substrate 10, the white particles 402 at the hollow portion LK can still have a certain reflective effect. Figure 20 The display brightness in can be understood as R+; Figure 19 Since the white particles 402 are located at the hollow portion LK and are close to the light emitting surface 000E of the electrophoretic panel 000, the red color resist is reflected by the white particles 402 and mixed with the white light, which can further enhance the brightness of the first color resist 500A. Figure 19 The display brightness in can be understood as R++, that is, Figure 19 The reflective effect of the white particles 402 close to the second substrate 20 enhances the brightness of the first color resist 500A, thereby improving the display brightness. By controlling the transmission of different voltages on the electrodes at the hollow portion LK position and the first color resist 500A position, different grayscale adjustments can be achieved when displaying the color of the first color resist 500.

[0097] In some optional embodiments, please continue to refer to Figure 1 and Figure 15 In this embodiment, the orthographic projection area S1 of the first sub-electrode 6011 on the plane where the first substrate 10 is located is larger than the orthographic projection area S2 of the second sub-electrode 6012 on the plane where the first substrate is located;

[0098] The orthographic projection area S3 of the third sub-electrode 7011 on the plane where the first substrate 10 is located is larger than the orthographic projection area S4 of the fourth sub-electrode 7012 on the plane where the first substrate 10 is located.

[0099] This embodiment explains that the first electrodes 601 at different positions in the first electrode layer 60 can be designed differently, and the second electrodes 701 at different positions in the second electrode layer 70 can be designed differently. Specifically, the orthographic projection area S1 of the first sub-electrode 6011 at the position of the color resist 500 on the plane where the first substrate 10 is located is larger than the orthographic projection area S2 of the second sub-electrode 6012 at the position of the hollow portion LK on the plane where the first substrate is located, and the orthographic projection area S3 of the third sub-electrode 7011 at the position of the color resist 500 on the plane where the first substrate 10 is located is larger than the orthographic projection area S4 of the fourth sub-electrode 7012 at the position of the hollow portion LK on the plane where the first substrate 10 is located (it can be understood that, Figure 15In the figure, the width is used to represent the size of the area. In actual implementation, the comparison of the size of the area is not only reflected in the width, but also in the positive projection area of the entire electrode). Therefore, when the electrophoretic panel 000 realizes different grayscale adjustments, for example, when a black picture is displayed, the first sub-electrode 6011 and the third sub-electrode 7011 corresponding to the color resist 500 are larger. In this way, the electric field formed between the first sub-electrode 6011 and the third sub-electrode 7011 at the color resist 500 is stronger than the electric field formed between the second sub-electrode 6012 and the fourth sub-electrode 7012 at the hollow portion LK. The number of black particles 401 gathered above the color resist 500 will be larger, which can better block the color resist 500, and the display effect of the black picture is better, which is beneficial to improving the display quality.

[0100] It can be understood that, in the figure of this embodiment, the orthographic projection area S1 of the first sub-electrode 6011 at the position of the color resist 500 on the plane where the first substrate 10 is located is equal to the orthographic projection area S3 of the third sub-electrode 7011 at the position of the color resist 500 on the plane where the first substrate 10 is located, and the orthographic projection area S2 of the second sub-electrode 6012 at the position of the hollow portion LK on the plane where the first substrate is located is equal to the orthographic projection area S4 of the fourth sub-electrode 7012 at the position of the hollow portion LK on the plane where the first substrate 10 is located. In a specific implementation, the orthographic projection area S1 of the first sub-electrode 6011 at the position of the color resist 500 on the plane where the first substrate 10 is located may also be unequal to the orthographic projection area S3 of the third sub-electrode 7011 at the position of the color resist 500 on the plane where the first substrate 10 is located, and the orthographic projection area S2 of the second sub-electrode 6012 at the position of the hollow portion LK on the plane where the first substrate is located may also be unequal to the orthographic projection area S4 of the fourth sub-electrode 7012 at the position of the hollow portion LK on the plane where the first substrate 10 is located. This embodiment does not limit this.

[0101] In some alternative embodiments, please refer to Figure 21 , Figure 21 1 is a schematic planar structural diagram of a display device according to an embodiment of the present invention. Display device 111 according to this embodiment includes electrophoretic panel 000 according to any of the aforementioned embodiments of the present invention. Display device 111 according to this embodiment of the present invention has the beneficial effects of electrophoretic panel 000 according to this embodiment of the present invention. For details, please refer to the detailed description of electrophoretic panel 000 in the aforementioned embodiments, and this embodiment will not be repeated here.

[0102] It can be seen from the above embodiments that the electrophoretic panel and display device provided by the present invention achieve at least the following beneficial effects:

[0103] The electrophoretic panel provided by the present invention includes a first substrate and a second substrate facing each other, and an insulating liquid containing a plurality of electrophoretic particles is sealed in a sealed box formed by the first substrate and the second substrate. A display function layer is also included between the first substrate and the second substrate, and the display function layer is located in the insulating liquid. The display function layer includes a plurality of pixel units, and the pixel units include a plurality of color resistors of different colors. The color resistors of different colors serve as a color filter structure for achieving a full-color display effect. In the present invention, the display function layer also includes a plurality of hollow portions, and the hollow portions penetrate the display function layer. The hollow portions can be understood as channels for allowing electrophoretic particles to move. Driven by the electric field formed by the opposing electrodes, the electrophoretic particles can move in the upper and lower spaces of the display function layer by passing through the hollow portions. In the present invention, the side of the color resist of the display function layer away from the second substrate also includes a reflective layer. The light-emitting surface of the electrophoretic panel, that is, the display surface, can be the surface of the second substrate away from the first substrate. The reflective layer is arranged on the side of the color resist away from the light-emitting surface of the electrophoretic panel. During display, a full-color display effect can be achieved through multiple color resists of different colors in the display function layer. Moreover, when the external ambient light or external light passes through the color resists of different colors in the display function layer as a light source, it can be directly reflected by the reflective layer located on the side of the color resist away from the second substrate, without the need for reflection through the electrophoretic particles between the display function layer and the first substrate. This can reduce brightness loss, which is beneficial to improving display brightness and ensuring display quality.

[0104] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electrophoretic panel, characterized in that: include: A first substrate and a second substrate are arranged opposite to each other, and an insulating liquid is located between the first substrate and the second substrate, wherein a plurality of electrophoretic particles are arranged in the insulating liquid; The first substrate and the second substrate further include: a display function layer, the display function layer being located in the insulating liquid between the first substrate and the second substrate; the display function layer comprising a plurality of pixel units and a plurality of hollow portions, the pixel units comprising a plurality of color resists of different colors, the hollow portions penetrating the display function layer; the hollow portions and the color resists not overlapping in a direction perpendicular to the plane of the first substrate; a first electrode layer, the first electrode layer being located on a side of the first substrate facing the second substrate, the first electrode layer comprising a plurality of first electrodes; a second electrode layer, the second electrode layer being located on a side of the second substrate facing the first substrate, the second electrode layer comprising a plurality of second electrodes; The side of the color resist away from the second substrate further includes a reflective layer.

2. The electrophoretic panel according to claim 1, wherein: The reflective layer is in direct contact with the color resist.

3. The electrophoretic panel according to claim 1, wherein: The orthographic projection of the hollow portion on the plane where the first substrate is located is located between the orthographic projections of two adjacent pixel units on the plane where the first substrate is located.

4. The electrophoretic panel according to claim 1, wherein: The orthographic projection of the first electrode on the plane where the first substrate is located at least partially overlaps with the orthographic projection of one of the color resists on the plane where the first substrate is located; An orthographic projection of the second electrode on the plane where the first substrate is located at least partially overlaps with an orthographic projection of one of the color resists on the plane where the first substrate is located.

5. The electrophoretic panel according to claim 1, wherein: The display function layer includes a first protective layer on a side facing the first substrate, and the first protective layer includes a plurality of first protrusion structures; The display function layer includes a second protective layer on a side facing the second substrate, and the second protective layer includes a plurality of second protrusion structures; The orthographic projection of the first protruding structure on the plane where the first substrate is located at least partially overlaps with the orthographic projection of the color resist on the plane where the first substrate is located, and the orthographic projection of the second protruding structure on the plane where the first substrate is located at least partially overlaps with the orthographic projection of the color resist on the plane where the first substrate is located.

6. The electrophoretic panel according to claim 5, wherein: A surface of the first protruding structure facing the first substrate is a curved surface, and a surface of the second protruding structure facing the second substrate is a curved surface.

7. The electrophoretic panel according to claim 6, wherein: In a direction perpendicular to the plane of the first substrate, the maximum thickness of the first protrusion structure is D11, the distance between the display function layer and the first substrate is D1, and D11≤0.5D1; In a direction perpendicular to the plane where the first substrate is located, the maximum thickness of the second protruding structure is D21, the distance between the display function layer and the second substrate is D2, and D21≤0.5D2.

8. The electrophoretic panel according to claim 1, wherein: An orthographic projection of at least part of the first electrode on the plane where the first substrate is located overlaps with an orthographic projection of the hollow portion on the plane where the first substrate is located; An orthographic projection of at least a portion of the second electrode on the plane where the first substrate is located overlaps with an orthographic projection of the hollow portion on the plane where the first substrate is located.

9. The electrophoretic panel according to claim 8, wherein: In the pixel unit, the plurality of color resists include at least a first color resist; The plurality of first electrodes include a first sub-electrode and a second sub-electrode, an orthographic projection of the first sub-electrode on the plane where the first substrate is located overlaps with an orthographic projection of the first color resist on the plane where the first substrate is located, and an orthographic projection of the second sub-electrode on the plane where the first substrate is located overlaps with an orthographic projection of the hollow portion on the plane where the first substrate is located; The plurality of second electrodes include a third sub-electrode and a fourth sub-electrode, an orthographic projection of the third sub-electrode on the plane where the first substrate is located overlaps with an orthographic projection of the first color resist on the plane where the first substrate is located, and an orthographic projection of the fourth sub-electrode on the plane where the first substrate is located overlaps with an orthographic projection of the hollow portion on the plane where the first substrate is located; The electrophoretic panel includes at least a first operating mode and a second operating mode; In the first operating mode, the electrical signal transmitted on the first sub-electrode and the electrical signal transmitted on the third sub-electrode have opposite phases, and the electrical signal transmitted on the second sub-electrode and the electrical signal transmitted on the fourth sub-electrode have opposite phases; In the second operating mode, the electrical signal transmitted on the first sub-electrode and the electrical signal transmitted on the third sub-electrode are both floating signals, and the electrical signal transmitted on the second sub-electrode and the electrical signal transmitted on the fourth sub-electrode have opposite phases.

10. The electrophoretic panel according to claim 9, wherein: The plurality of electrophoretic particles include black particles and white particles with opposite charges, the black particles are negatively charged, and the white particles are positively charged; In the first operating mode, the electrical signal transmitted on the first sub-electrode and the electrical signal transmitted on the second sub-electrode have opposite phases, the electrical signal transmitted on the first sub-electrode is a negative potential signal, some of the black particles are located between the first color resistor and the third sub-electrode, some of the white particles are located between the first color resistor and the first sub-electrode, and some of the white particles are located on the side of some of the black particles close to the fourth sub-electrode; or The electrical signal transmitted on the first sub-electrode is the same as the electrical signal transmitted on the second sub-electrode. The electrical signal transmitted on the first sub-electrode is a negative potential signal. Some of the black particles are located between the first color resistor and the third sub-electrode, some of the white particles are located between the first color resistor and the first sub-electrode, and some of the white particles are located on the side of some of the black particles close to the second sub-electrode.

11. The electrophoretic panel according to claim 9, wherein: The plurality of electrophoretic particles include black particles and white particles with opposite charges, the black particles are negatively charged, and the white particles are positively charged; In the second operating mode, the electrical signal transmitted on the second sub-electrode is a negative potential signal, there is no electrophoretic particle between the first color resistor and the first sub-electrode, there is no electrophoretic particle between the first color resistor and the third sub-electrode, and some of the white particles are located on a side of some of the black particles close to the second sub-electrode; or The electrical signal transmitted on the second sub-electrode is a positive potential signal, there is no electrophoretic particle between the first color resist and the first sub-electrode, there is no electrophoretic particle between the first color resist and the third sub-electrode, and some of the black particles are located on the side of some of the white particles close to the second sub-electrode.

12. The electrophoretic panel according to claim 9, wherein: The orthographic projection area of the first sub-electrode on the plane where the first substrate is located is larger than the orthographic projection area of the second sub-electrode on the plane where the first substrate is located; An orthographic projection area of the third sub-electrode on the plane where the first substrate is located is larger than an orthographic projection area of the fourth sub-electrode on the plane where the first substrate is located.

13. A display device, characterized in that: The electrophoretic panel comprises the electrophoretic panel according to any one of claims 1 to 12.

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