Display panel, display device, and method for manufacturing display panel

Abstract

This application provides a display panel, a display device, and a method for fabricating the display panel. The display panel includes a first substrate, a color ink layer, a plurality of pixel electrodes, and an electrophoretic layer. The color ink layer is disposed on one side of the first substrate and includes a plurality of ink portions, each including a first ink portion and a second ink portion of different colors. The plurality of pixel electrodes are disposed on one side of the first substrate and include a first electrode corresponding to a first ink portion and a second electrode corresponding to a second ink portion. The electrophoretic layer is disposed on the side of the color ink layer and the pixel electrodes facing away from the first substrate. The electrophoretic layer includes electrophoretic particles. The orthographic projection of the first ink portion on the first substrate is at least partially located between the orthographic projections of two first electrodes on the first substrate, and the orthographic projection of the second ink portion on the first substrate is at least partially located between the orthographic projections of two second electrodes on the first substrate.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] With the development of science and technology, display devices have also evolved, and their types have become increasingly diverse. Existing display devices include liquid crystal displays, organic electroluminescent displays, and electrophoretic displays, among others. Among these, electrophoretic displays have become increasingly important due to their advantages such as low energy consumption, high reflectivity, and high contrast. Summary of the Invention

[0003] This application provides a display panel, a display device, and a method for manufacturing the display panel, which can improve the color display effect.

[0004] In a first aspect, embodiments of this application provide a display panel, which includes a first substrate, a color ink layer, a plurality of pixel electrodes, and an electrophoretic layer. The color ink layer is disposed on one side of the first substrate and includes a plurality of ink portions, each ink portion including a first ink portion and a second ink portion of different colors. The plurality of pixel electrodes are disposed on one side of the first substrate, and each pixel electrode includes a first electrode corresponding to a first ink portion and a second electrode corresponding to a second ink portion.

[0005] An electrophoretic layer is disposed on the side of the color ink layer and pixel electrode opposite to the first substrate. The electrophoretic layer includes electrophoretic particles. The first ink portion is at least partially located between the two first electrodes in the orthographic projection of the first substrate. The second ink portion is at least partially located between the two second electrodes in the orthographic projection of the first substrate.

[0006] Secondly, embodiments of this application provide a display device, which includes the display panel in any of the foregoing embodiments.

[0007] Thirdly, embodiments of this application provide a method for manufacturing a display panel, comprising:

[0008] A connection functional layer is formed on one side of the first substrate;

[0009] The connection functional layer is etched to form multiple opening structures spaced apart, and a connection between adjacent opening structures;

[0010] Multiple ink portions are formed within multiple opening structures, and the multiple ink portions include a first ink portion and a second ink portion with different colors;

[0011] Multiple pixel electrodes are formed on the side of the connection portion away from the first substrate. Each pixel electrode includes a first electrode corresponding to a first ink portion and a second electrode corresponding to a second ink portion. The orthographic projection of the first ink portion on the first substrate is at least partially located between the orthographic projections of the two first electrodes on the first substrate, and the orthographic projection of the second ink portion on the first substrate is at least partially located between the orthographic projections of the two second electrodes on the first substrate.

[0012] An electrophoretic layer is formed on the side of the pixel electrode away from the first substrate, and the electrophoretic layer includes electrophoretic particles.

[0013] This application provides a display panel, a display device, and a method for manufacturing the display panel. The electrophoretic layer includes only one type of electrophoretic particle, which can block ambient light. A first electrode and a second electrode are respectively disposed corresponding to a first ink portion and a second ink portion, and independently control the distribution of electrophoretic particles at corresponding positions in the first and second ink portions. Based on this, the display panel can selectively control whether electrophoretic particles cover the area of ​​the first ink portion through the first electrode, thereby adjusting the amount of ambient light propagating to the first ink portion and achieving display control of a specific color corresponding to the first ink portion. Furthermore, the second electrode can selectively control whether electrophoretic particles cover the area of ​​the second ink portion, thereby adjusting the amount of ambient light propagating to the second ink portion and achieving display control of a specific color corresponding to the second ink portion. In this case, the display panel can achieve the display requirements of a color image through the combined action of the color ink layer, the electrophoretic layer, and the pixel electrodes.

[0014] Furthermore, during the display process, ambient light first passes through the electrophoretic layer to reach the color ink layer, and then exits the display panel through reflection from the color ink layer. In this process, ambient light only undergoes one reflection, eliminating the need for multiple reflections or filtering, which helps improve the brightness and display effect. Simultaneously, since only one type of electrophoretic particle can be set in the electrophoretic layer, the risk of interference between different electrophoretic particles is low. This helps improve the response rate of the display panel, thereby also enhancing the display effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic cross-sectional view of a display panel in a first color state, provided in an embodiment of this application.

[0017] Figure 2This is a schematic cross-sectional view of a display panel in a second color state, provided in an embodiment of this application.

[0018] Figure 3 This is a schematic cross-sectional view of a display panel in other color states provided in an embodiment of this application;

[0019] Figure 4 This is a schematic cross-sectional view of a display panel in a black state, provided in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram illustrating the relative position structure between the ink portion and the pixel electrode in a display panel, provided in an embodiment of this application.

[0021] Figure 6 This is a schematic diagram illustrating the positional relationship between the ink portion and the pixel electrode in another display panel provided in this application embodiment;

[0022] Figure 7 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0023] Figure 8 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0024] Figure 9 This is a schematic diagram illustrating the positional relationship between the support pillar, pixel electrode, and ink portion in a display panel according to another embodiment of this application.

[0025] Figure 10 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0026] Figure 11 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0027] Figure 12 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0028] Figure 13 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0029] Figure 14 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0030] Figure 15 This is a schematic diagram illustrating the positional relationship between pixel electrodes and ink portions in a display panel, provided in an embodiment of this application.

[0031] Figure 16 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0032] Figure 17 yes Figure 16 Enlarged structural diagram of region Q in the middle region;

[0033] Figure 18 yes Figure 16 A magnified structural diagram of region V in the middle area;

[0034] Figure 19 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0035] Figure 20 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0036] Figure 21 yes Figure 20 A magnified structural diagram of region P in the middle area;

[0037] Figure 22 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0038] Figure 23 yes Figure 22 A magnified structural diagram of region N in the middle area;

[0039] Figure 24 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0040] Figure 25 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0041] Figure 26 This is a cross-sectional structural diagram of another display panel provided in an embodiment of this application;

[0042] Figure 27 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0043] Figure 28 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0044] Figures 29a to 29e This is a process structure diagram of a method for manufacturing a display panel provided in an embodiment of this application.

[0045] Marker explanation:

[0046] 100. Display panel; 200. Display device;

[0047] 10. First substrate;

[0048] 20. Colored ink layer; 21. Ink section; 211. Second protrusion; 212. First arc surface; 213. Second body section; 214. Cutting plane; 22. First ink section; 23. Second ink section; 24. First type of ink section; 25. Second type of ink section; 26. Connecting part; 27. Third ink section;

[0049] 30. Pixel electrode; 31. First electrode; 32. Second electrode; 33. First type electrode; 34. Second type electrode; 35. First protrusion; 351. First sidewall; 352. First bottom wall; 36. First body portion;

[0050] 40. Electrophoretic layer; 41. Electrophoretic particles;

[0051] 50. Common electrode; 51. Electrode section; 52. First surface; 53. Second arc surface;

[0052] 60. Support column; 61. Support layer;

[0053] 70; Connecting functional layers; 71; Opening structure;

[0054] C. Repeating unit; T1. First orthographic projection; T2. Second orthographic projection; E1. First edge; E2. Second edge; M1. First top surface; M2. Second top surface;

[0055] X, first direction; Y, second direction; Z, thickness direction. Detailed Implementation

[0056] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0058] Electrophoretic display panels utilize electrophoretic particles of specific colors and electrical properties. By applying an external electric field, these particles move within a liquid environment, creating different color display effects. In related technologies, electrophoretic display panels can achieve color display effects through the combination of black and white electrophoretic particles and a color filter layer, or through the interaction of multiple electrophoretic particles of different colors.

[0059] The inventors discovered that in their solution involving a color filter layer positioned above the black and white electrophoretic particles, ambient light must first pass through the color filter layer to reach the electrophoretic particles, where it undergoes total internal reflection before exiting the color filter layer and reaching the user's eyes to achieve the display effect. However, this design requires ambient light to pass through the color filter layer twice, and due to the low transmittance of the color filter layer itself, the display effect of the electrophoretic display panel is poor.

[0060] For solutions using multiple different colored electrophoretic particles, the driving method for displaying color images is complex, and different colored electrophoretic particles are prone to mutual interference, resulting in slow response speed and long response time of the electrophoretic display panel, which can also easily lead to poor display effect.

[0061] Regarding the above issues, firstly, please refer to [link / reference needed]. Figure 1 This application provides a display panel 100, which includes a first substrate 10, a color ink layer 20, a plurality of pixel electrodes 30, and an electrophoretic layer 40. The color ink layer 20 is disposed on one side of the first substrate 10 and includes a plurality of ink portions 21, each of which includes a first ink portion 22 and a second ink portion 23 of different colors. The plurality of pixel electrodes 30 are disposed on one side of the first substrate 10 and include a first electrode 31 corresponding to the first ink portion 22 and a second electrode 32 corresponding to the second ink portion 23.

[0062] An electrophoretic layer 40 is disposed on the side of the color ink layer 20 and pixel electrode 30 away from the first substrate 10. The electrophoretic layer 40 includes electrophoretic particles 41. The first ink portion 22 is at least partially located between the two first electrodes 31 in the orthographic projection of the first substrate 10. The second ink portion 23 is at least partially located between the two second electrodes 32 in the orthographic projection of the first substrate 10.

[0063] The first substrate 10 can serve as a carrier to support a portion of the film structure in the display panel 100. The first substrate 10 may include a glass substrate, meaning the display panel 100 is a rigid structure; or the first substrate 10 may include a flexible substrate, meaning the display panel 100 can be a flexible structure to meet the bending requirements of the display panel 100. This application does not limit this.

[0064] An electrophoretic layer 40 is disposed on one side of the first substrate 10. The electrophoretic layer 40 includes a plurality of electrophoretic particles 41. In related technologies, the electrophoretic display panel 100 includes at least two colors of electrophoretic particles. By changing the positional relationship between the different colored electrophoretic particles 41, the display panel 100 can switch the image. However, in this embodiment, the electrophoretic particles 41 are not components used to achieve the display effect; they only serve to block light. In other words, the display panel 100 includes only one type of electrophoretic particle 41, and the electrophoretic particle 41 includes a black light-blocking material.

[0065] It should be noted that the electrical properties mentioned here refer to the positive or negative charge carried by the electrophoretic particles 41. All electrophoretic particles 41 can be positive particles, or all can be negative particles. While each electrophoretic particle 41 corresponds to a black light-blocking material and has the same electrical properties, different electrophoretic particles 41 can have the same shape and size, or they can have different shapes and sizes. Furthermore, different electrophoretic particles 41 can have the same charge, or they can have different charges. This embodiment of the application does not impose any limitations on these aspects.

[0066] The colored ink layer 20 and the electrophoretic layer 40 are disposed on the same side of the first substrate 10. The colored ink layer 20 is the main component for realizing the color display of the display panel 100. The colored ink layer 20 includes a plurality of ink portions 21, each containing ink material. Ambient light propagating to the ink portions 21 can be reflected by the ink portions 21 and emitted away from the display panel 100. Figure 1 In the diagram, the propagation process of ambient light within the display panel 100 is illustrated by dashed lines.

[0067] Since different ink portions 21 have different colors, ambient light can be reflected by different ink portions 21 and transformed into light of different colors. For example, if the colored ink layer 20 includes a green ink portion 21, ambient light propagating to the green ink portion 21 can be reflected into green light and emitted out of the display panel 100. If the colored ink layer 20 includes a red ink portion 21, ambient light propagating to the red ink portion 21 can be reflected into red light and emitted out of the display panel 100.

[0068] The plurality of ink sections 21 include a first ink section 22 and a second ink section 23 of different colors. The embodiments of this application do not limit the types of colors of the first ink section 22 and the second ink section 23, as long as both the first ink section 22 and the second ink section 23 are colored and their colors are different from each other. Optionally, the first ink section 22 and the second ink section 23 may each include one of a red ink section 21, a green ink section 21, and a blue ink section 21.

[0069] Depending on the actual needs, the multiple ink sections 21 may include only ink sections 21 of two colors, namely the first ink section 22 and the second ink section 23, or they may include ink sections 21 of other colors. This application embodiment does not limit this.

[0070] In addition to the aforementioned film structure, the display panel 100 also includes a plurality of pixel electrodes 30. The pixel electrodes 30 are device structures used to control the position of electrophoretic particles 41. Each pixel electrode 30 includes a first electrode 31 corresponding to the first ink portion 22 and a second electrode 32 corresponding to the second ink portion 23. The "first electrode 31 corresponding to the first ink portion 22" refers to the first electrode 31 being able to control a portion of the electrophoretic particles 41 corresponding to the position of the first ink portion 22. In other words, the electrophoretic layer 40 has a first region that coincides with the orthographic projection of the first ink portion 22 onto the first substrate 10, and the first electrode 31 is able to control the distribution state of the electrophoretic particles 41 located within the first region. The "second electrode 32 corresponding to the second ink portion 23" is similarly described, and will not be elaborated further in this embodiment.

[0071] A single first ink section 22 may be provided with multiple first electrodes 31. These multiple first electrodes 31 are located at different positions around the periphery of the first ink section 22. Depending on the actual needs, the projection of the first electrode 31 onto the first substrate 10 may overlap with the projection of the first ink section 22 onto the first substrate 10, or the projection of the first electrode 31 onto the first substrate 10 may be completely outside the projection of the first ink section 22 onto the first substrate 10, as long as the projection of the first ink section 22 onto the first substrate 10 is at least partially located between the projections of two first electrodes 31 onto the first substrate 10. Here, the two first electrodes 31 refer to two first electrodes 31 adjacent in a single direction. The projections of the first ink section 22 and these two first electrodes 31 onto the first substrate 10 may or may not overlap.

[0072] A single first ink section 22 may have only two first electrodes 31, or it may have more first electrodes 31. Multiple first electrodes 31 within a single first ink section 22 can be driven and controlled by the same signal. Furthermore, the different first electrodes 31 within a single first ink section 22 can be interconnected, requiring only a single signal trace connected to each first electrode 31 to meet the driving needs of the multiple first electrodes 31 within the single first ink section 22. In other embodiments, all the first electrodes 31 within a single first ink section 22 may be spaced apart. In this case, multiple signal traces are needed to connect to different first electrodes 31, and these multiple signal traces can be used to transmit the same signal voltage.

[0073] Furthermore, the first electrode 31 can have various sizes and shapes. For example, its orthographic projection onto the first substrate 10 can include a straight line structure or an arc-shaped structure. Optionally, the size and shape of the first electrode 31 correspond to the size and shape of the first ink portion 22. For example, if the first ink portion 22 has a polygonal structure such as a triangle or a square in its orthographic projection onto the first substrate 10, the first electrode 31 can include a straight line structure and be disposed corresponding to one side of the polygon; if the first ink portion 22 has a circular orthographic projection onto the first substrate 10, the first electrode 31 can include an arc-shaped structure.

[0074] The relationship between the second ink section 23 and the second electrode 32 is similar to the relationship between the first ink section 22 and the first electrode 31, and will not be repeated in this embodiment. However, for the first electrode 31 and the second electrode 32, in order to meet the driving requirements of multi-color display, the first electrode 31 and the second electrode 32 need to be insulated from each other. In other words, at the same time, the first electrode 31 and the second electrode 32 can have the same voltage value, or they can have different voltage values. Under this design, the first electrode 31 can freely choose to control the distribution state of the electrophoretic particles 41 above the first ink section 22 without being affected by the internal signal voltage of the second electrode 32. Similarly, the second electrode 32 can freely choose to control the distribution state of the electrophoretic particles 41 above the second ink section 23 without being affected by the internal signal voltage of the first electrode 31, thereby meeting the independent display driving requirements of different color images.

[0075] In this embodiment, the electrophoretic layer 40 includes only one type of electrophoretic particle 41, which can block ambient light. The first electrode 31 and the second electrode 32 are respectively disposed corresponding to the first ink portion 22 and the second ink portion 23, and independently control the distribution of the electrophoretic particles 41 at corresponding positions in the first ink portion 22 and the second ink portion 23. Based on this, the display panel 100 can selectively control whether the electrophoretic particles 41 cover the area of ​​the first ink portion 22 through the first electrode 31, thereby adjusting the amount of ambient light propagating to the first ink portion 22 and achieving display control of a specific color corresponding to the first ink portion 22. Furthermore, the second electrode 32 can selectively control whether the electrophoretic particles 41 cover the area of ​​the second ink portion 23, thereby adjusting the amount of ambient light propagating to the second ink portion 23 and achieving display control of a specific color corresponding to the second ink portion 23. In this case, the display panel 100 can achieve the display requirements of a color image through the combined action of the color ink layer 20, the electrophoretic layer 40, and the pixel electrode 30.

[0076] Furthermore, during the display process, ambient light first passes through the electrophoretic layer 40 to reach the color ink layer 20, and then leaves the display panel 100 through reflection from the color ink layer 20. In this process, the ambient light only undergoes one reflection, without the need for multiple reflections or filtering, which helps to improve the brightness and display effect. Simultaneously, since the electrophoretic layer 40 can contain only one type of electrophoretic particle 41, the risk of mutual interference between different electrophoretic particles 41 is low. This helps to improve the response rate of the display panel 100, thereby also improving the display effect of the display panel 100.

[0077] It should be noted that, in addition to the above-described structure, the display panel 100 also includes other devices and film layers. The specific composition of the display panel 100 is not limited in this application. In some optional embodiments, the display panel 100 further includes a common electrode 50 disposed on the side of the electrophoretic layer 40 facing away from the first substrate 10, wherein the orthographic projections of the first electrode 31 and the second electrode 32 onto the first substrate 10 are located within the orthographic projection of the common electrode 50 onto the first substrate 10.

[0078] The common electrode 50 can be planar, and its orthographic projection on the first substrate 10 can cover the orthographic projection of multiple pixel electrodes 30, including the first electrode 31 and the second electrode 32, on the first substrate 100. The pixel electrodes 30 and the common electrode 50 are spaced apart along the thickness direction Z of the display panel 100, and an electric field structure is formed between them to control the distribution of electrophoretic particles 41. Based on this, since the first electrode 31 is positioned corresponding to the first ink portion 22, the electric field structure formed by the first electrode 31 and the common electrode 50 can control the distribution of electrophoretic particles 41 above the first ink portion 22, and selectively control whether the electrophoretic particles 41 cover or not cover the first ink portion 22 depending on the situation. Similarly, since the second electrode 32 is positioned corresponding to the second ink portion 23, the electric field structure formed by the second electrode 32 and the common electrode 50 can control the distribution of electrophoretic particles 41 above the second ink portion 23, and selectively control whether the electrophoretic particles 41 block or not block the second ink portion 23 depending on the situation.

[0079] In some embodiments, please refer to Figure 1 and Figure 2 Electrophoretic particles 41 are positively charged. The display panel 100 has a first color state and a second color state. In the first color state, the voltage of the common electrode 50 is V1, the voltage of the first electrode 31 is V2, and the voltage of the second electrode 32 is V3, where V3 > V1 > V2. In the second color state, the voltage of the common electrode 50 is V4, the voltage of the first electrode 31 is V5, and the voltage of the second electrode 32 is V6, where V5 > V4 > V6.

[0080] The "first color state" mentioned here refers to the state of the display panel 100 when displaying the same color as the first ink section 22. If the first ink section 22 includes a green ink section 21, then the first color state is the state when the display panel 100 displays a green image; if the first ink section 22 includes a red ink section 21, then the first color state is the state when the display panel 100 displays a red image. Similarly, the "second color state" mentioned here refers to the state of the display panel 100 when displaying the same color as the second ink section 23.

[0081] like Figure 1As shown, in the first color state, to meet display requirements, the electrophoretic particles 41 need to not cover the first ink portion 22 and cover the second ink portion 23, so that ambient light can propagate to the first ink portion 22 and be reflected by it, but cannot propagate to the second ink portion 23 and be reflected by it. Therefore, in this embodiment, the voltage V2 of the first electrode 31 in the first color state is set to be less than the voltage V1 of the common electrode 50. Thus, in the electric field structure formed by the first electrode 31 and the common electrode 50, the positively charged electrophoretic particles 41 can be repelled by the common electrode 50 and attracted by the first electrode 31, gathering at the location of the first electrode 31. This ensures that at least a portion of the structure in the first ink portion 22 is not blocked by the electrophoretic particles 41, allowing ambient light to propagate to the first ink portion 22 and be reflected by it into light of a specific color, ultimately exiting the display panel 100.

[0082] Furthermore, in this embodiment, the voltage V3 of the second electrode 32 in the first color state is set to be greater than the voltage V1 of the common electrode 50. As a result, in the electric field structure formed by the second electrode 32 and the common electrode 50, the positively charged electrophoretic particles 41 can be repelled by the second electrode 32 and attracted by the common electrode 50 and gathered at the location of the common electrode 50. In this way, the electrophoretic particles 41 gathered at the common electrode 50 can cover and block most of the area in the second ink section 23, so that most of the ambient light cannot propagate to the second ink section 23. Even if some ambient light propagates to the second ink section 23 through the electrophoretic particles 41, the light reflected from the second ink section 23 is difficult to leave the display panel 100 due to the blocking of the electrophoretic particles 41.

[0083] It should be noted that the specific values ​​of V1, V2, and V3 are not limited in this embodiment. V1, V2, and V3 can all be positive, negative, or 0, as long as V3 > V1 > V2. In addition, depending on the actual needs, the electrophoretic particles 41 can also be negatively charged. In this case, in order to meet the display requirements of the first color state, V1, V2, and V3 need to satisfy the following condition: V2 > V1 > V3.

[0084] like Figure 2As shown, in the second color state, to meet display requirements, the electrophoretic particles 41 need to cover the first ink portion 22 but not the second ink portion 23, so that ambient light can propagate to the second ink portion 23 and be reflected by it, but cannot propagate to the first ink portion 22 and be reflected by it. Therefore, in this embodiment, the voltage V6 of the second electrode 32 in the second color state is set to be less than the voltage V4 of the common electrode 50. Thus, in the electric field structure formed by the second electrode 32 and the common electrode 50, the positively charged electrophoretic particles 41 can be repelled by the common electrode 50 and attracted by the second electrode 32, gathering at the location of the second electrode 32. This ensures that at least a portion of the structure in the second ink portion 23 is not blocked by the electrophoretic particles 41, allowing ambient light to propagate to the second ink portion 23 and be reflected by it into light of a specific color, ultimately exiting the display panel 100.

[0085] Furthermore, in this embodiment, the voltage V5 of the first electrode 31 in the second color state is set to be greater than the voltage V4 of the common electrode 50. Thus, in the electric field structure formed by the first electrode 31 and the common electrode 50, the positively charged electrophoretic particles 41 can be repelled by the first electrode 31 and attracted by the common electrode 50 and gathered at the location of the common electrode 50. In this way, the electrophoretic particles 41 gathered at the common electrode 50 can cover and block most of the area in the first ink part 22, so that most of the ambient light cannot propagate to the first ink part 22. Even if some ambient light propagates to the first ink part 22 through the electrophoretic particles 41, the light reflected from the first ink part 22 is difficult to leave the display panel 100 due to the blocking of the electrophoretic particles 41.

[0086] It should be noted that the specific values ​​of V4, V5, and V6 are not limited in this embodiment. V4, V5, and V6 can all be positive, negative, or 0, as long as V5 > V4 > V6. In addition, depending on the actual needs, the electrophoretic particles 41 can also be negatively charged. In this case, in order to meet the display requirements of the first color state, V4, V5, and V6 need to satisfy the following condition: V6 > V4 > V5.

[0087] Furthermore, regarding the voltage V1 of the common electrode 50 in the first color state and the voltage V4 of the common electrode 50 in the second color state, depending on the actual needs, V1 can be set to be equal to V4, or V1 can be set to be greater than or equal to V4. Optionally, V1 = V4, so that during the transition between the first color state and the second color state, the voltage of the common electrode 50 does not need to be adjusted, but only the voltage magnitude within the different pixel electrodes 30 is changed to achieve the switching of display colors, thereby reducing the control difficulty and helping to improve the efficiency of screen switching.

[0088] Regarding the voltage V2 of the first electrode 31 in the first color state and the voltage V6 of the second electrode 32 in the second color state, they can be the same or different. Similarly, regarding the voltage V3 of the second electrode 32 in the first color state and the voltage V5 of the first electrode 31 in the second color state, they can be the same or different, and this embodiment does not impose any restrictions on this. Optionally, V2 = V6, V3 = V5.

[0089] Alternatively, V1 = V4 = 0, V2 = V6 < 0, and V3 = V5 > 0. In this way, the common electrode 50 has no signal voltage in both the first and second color states, thereby helping to reduce the display power consumption of the display panel 100. For example, V2 = V6 = -15V and V3 = V5 = 15V.

[0090] In this embodiment, for the two different color display states, the voltage of the first electrode 31 and the voltage of the second electrode 32 remain different in both states. Furthermore, there is a different relationship between the voltage values ​​of the first electrode 31 and the common electrode 50. This ensures that the first ink portion 22 in the first color state is not blocked by the electrophoretic particles 41, while the first ink portion 22 in the second color state is blocked by the electrophoretic particles 41. Similarly, there is a different relationship between the voltage values ​​of the second electrode 32 and the common electrode 50, ensuring that the second ink portion 23 in the first color state is blocked by the electrophoretic particles 41, while the second ink portion 23 in the second color state is not blocked by the electrophoretic particles 41. Based on this, by adjusting the different voltage values ​​of the first electrode 31 and the second electrode 32 relative to the common electrode 50, the display panel 100 can switch between different color states, thereby meeting the needs of color display and providing strong flexibility.

[0091] It should be noted that you should refer to [link / reference]. Figure 3 In actual use, the display panel 100 often needs to display image information that is not a single color. Therefore, for different first ink portions 22, the voltage relationship between the first electrode 31 and the common electrode 50 will also differ. Specifically, at some locations, the voltage value of the first electrode 31 needs to be less than the voltage value of the common electrode 50 to prevent the first ink portions 22 at some locations from being covered or blocked by the electrophoretic particles 41. At other locations, the voltage value of the first electrode 31 needs to be greater than the voltage value of the common electrode 50 to ensure that the first ink portions 22 at some locations are covered or blocked by the electrophoretic particles 41. The same principle applies to different second ink portions 23, and will not be elaborated further in this embodiment.

[0092] In some embodiments, please refer to Figure 4The display panel 100 also has a black state, in which the voltage of the common electrode 50 is V7, where V7 < 0. For example, V7 = -15V.

[0093] The "black state" mentioned here refers to the state when the display panel 100 displays a black image. In the black state, both the first ink section 22 and the second ink section 23 need to be blocked by the electrophoretic particles 41. At this time, the voltage V7 of the common electrode 50 needs to be less than the voltage of the first electrode 31 and the second electrode 32 simultaneously. In this way, the electrophoretic particles 41 can be repelled by the first electrode 31 and the second electrode 32 and accumulate at the common electrode 50, thereby achieving the blocking effect on the first ink section 22 and the second ink section 23.

[0094] Based on this, in this embodiment, the voltage V7 of the common electrode 50 in the black state is set to be less than 0, so that the common electrode 50 itself has the ability to attract positively charged electrophoretic particles 41, thereby improving the aggregation ability of electrophoretic particles 41 at the common electrode 50 and improving the blocking effect of electrophoretic particles 41 on the first ink part 22 and the second ink part 23.

[0095] Further optionally, based on this, the voltage between the first electrode 31 and the second electrode 32 in the black state can be set to 0, that is, there may be no signal voltage in the first electrode 31 and the second electrode 32, thereby reducing the display power consumption of the display panel 100. Of course, in some other embodiments, the voltage between the first electrode 31 and the second electrode 32 in the black state may not be 0, but may be positive or negative, as long as both voltages are greater than the voltage V7 of the common electrode 50.

[0096] In some embodiments, please refer to Figure 1 and Figure 5 The first electrodes 31 corresponding to the first ink portion 22 surround the orthogonal projection of the first ink portion 22 on the first substrate 10, and the second electrodes 32 corresponding to the second ink portion 23 surround the orthogonal projection of the second ink portion 23 on the first substrate 10. The first electrodes 31 and the second electrodes 32 are arranged at intervals.

[0097] The phrase "surrounding the first ink section 22" refers to the fact that multiple first electrodes 31 corresponding to a single first ink section 22 are disposed at different positions around the first ink section 22, such that a first electrode 31 is provided at each of the different peripheral positions of the first ink section 22. These multiple first electrodes 31 corresponding to a single first ink section 22 can be connected to each other or spaced apart. The relative relationship between the second electrode 32 and the second ink section 23 is similar and will not be described further in this embodiment.

[0098] In this embodiment, the multiple first electrodes 31 corresponding to a single first ink portion 22 are not only located at a single position on the periphery of the first ink portion 22, but are distributed at different periphery positions of the first ink portion 22 along different directions. This allows for driving control of the electrophoretic particles 41 provided on the corresponding first ink portion 22 from multiple angles, improving the control accuracy of the electrophoretic particles 41 and helping to improve the response rate.

[0099] Furthermore, in this embodiment, the first electrode 31 and the second electrode 32 are not connected as a single unit, but are spaced apart from each other. This allows the first electrode 31 and the second electrode 32 to be insulated from each other and to be driven independently by different signal voltages. This enables independent control of the distribution of electrophoretic particles 41 relative to the first ink section 22 and the second ink section 23, thus meeting the multicolor display requirements of the display panel 100.

[0100] In some embodiments, please refer to Figure 6 The plurality of first electrodes 31 corresponding to the first ink section 22 are connected to each other; and / or, the plurality of second electrodes 32 corresponding to the second ink section 23 are connected to each other. Further optionally, the plurality of first electrodes 31 corresponding to the first ink section 22 are connected to each other; and the plurality of second electrodes 32 corresponding to the second ink section 23 are connected to each other.

[0101] Taking the first ink section 22 as an example, depending on the actual needs, it is possible to connect some of the first electrodes 31 corresponding to a single first ink section 22 to each other, while the other first electrodes 31 are spaced apart from each other; alternatively, it is possible to connect all the first electrodes 31 corresponding to a single first ink section 22 to each other. Optionally, all the first electrodes 31 corresponding to a single first ink section 22 are connected to each other to form an integral structure, which helps to reduce the difficulty of fabricating the first electrodes 31.

[0102] As can be seen from the foregoing, the shape and size of the first electrode 31 can correspond to the shape and size of the first ink portion 22. Furthermore, the shape and size of the large electrode structure formed by connecting multiple first electrodes 31 can also correspond to the shape and size of the first ink portion 22. For example, if the first ink portion 22 has a rectangular structure in its orthographic projection on the first substrate 10, then the electrode structure formed by connecting multiple first electrodes 31 can have a square ring structure in its orthographic projection on the first substrate 10. This square ring structure surrounds the periphery of the rectangular structure, and the two may overlap or not overlap. If the first ink portion 22 has a circular structure in its orthographic projection on the first substrate 10, then the electrode structure formed by connecting multiple first electrodes 31 can have a circular ring structure in its orthographic projection on the first substrate 10. This circular ring structure surrounds the periphery of the circular structure, and the two may overlap or not overlap.

[0103] In this embodiment, the multiple first electrodes 31 corresponding to a single first ink section 22 can be connected to each other. This helps reduce the fabrication difficulty of the first electrodes 31. Furthermore, with this design, only one signal trace needs to be connected to the first electrode 31 to meet the signal voltage requirements of the multiple first electrodes 31, thereby reducing the number of signal traces connected to the first electrodes 31 and alleviating the layout pressure of signal traces within the display panel 100. The relationship between the second ink section 23 and the second electrode 32 is similar, and this embodiment does not impose any limitations.

[0104] In some embodiments, please refer to Figure 7 The display panel 100 also includes support pillars 60 disposed within the electrophoretic layer 40. The support pillars 60 are positioned between the orthographic projections of adjacent ink portions 21 on the first substrate 10. However, some adjacent ink portions 21 are not provided with support pillars 60.

[0105] The support column 60 is a component in the display panel 100 that serves as a support. The support column 60 is disposed within the electrophoretic layer 40, meaning that the support column 60 can be disposed in the same layer as the electrophoretic particles 41. The presence of the support column 60 can reduce the degree of deformation of the electrophoretic layer 40, reduce the risk of the electrophoretic particles 41 moving due to the deformation of the electrophoretic layer 40, and improve the reliability of the display panel 100.

[0106] It should be noted that, as Figure 7 As shown, the support column 60 provided in this embodiment can be applied to an electrophoretic display panel 100 with a cofferdam structure. In this case, multiple support columns 60 can define multiple independent and different regions, and the electrophoretic particles 41 located in a single region cannot move to adjacent regions because they are blocked by the support column 60. Or as... Figure 8 As shown, the support structure provided in this application embodiment can also be applied to the electrophoretic display panel 100 with a microcup structure. In this case, the display panel 100 also includes a support layer 61. Two adjacent support pillars 60 are connected to the support layer 61 and include the same material. In this way, two adjacent support pillars 60 and the support layer 61 can jointly form a microcup structure for accommodating multiple electrophoretic particles 41. The presence of the microcup structure can also prevent the risk of excessive movement of electrophoretic particles 41 and improve the operational reliability of the display panel 100.

[0107] Furthermore, the specific positional relationship of the support post 60 relative to the ink portion 21 and the pixel electrode 30 is not limited in this embodiment. The support post 60 may be attached to the surface of the pixel electrode 30 away from the first substrate 10, or the support post 60 may be attached to the surface of the ink portion 21 away from the first substrate 10, or the support post 60 may be disposed in the same layer as at least one of the ink portion 21 and the pixel electrode 30.

[0108] As described above, each first ink section 22 is provided with multiple first electrodes 31 to control the positional relationship of the electrophoretic particles 41 relative to the first ink section 22, and each second ink section 23 is provided with multiple second electrodes 32 to control the positional relationship of the electrophoretic particles 41 relative to the second ink section 23. Based on this, considering that the number of pixel electrodes 30 corresponding to a single ink section 21 is usually multiple, the distribution state of the electrophoretic particles 41 can be adjusted and controlled to a large extent by relying on the electric field structure formed by the pixel electrodes 30 and the common electrode 50. Therefore, it is possible to omit the support pillars 60 between some adjacent ink sections 21, thereby reducing the orthographic projection size of the multiple support pillars 60 on the first substrate 10.

[0109] Furthermore, in this embodiment, the presence of the support pillars 60 can support the electrophoretic layer 40 and reduce the risk of excessive movement of the electrophoretic particles 41, thereby improving the reliability of the display panel 100. Simultaneously, since the support pillars 60 are not provided between some adjacent ink portions 21, it helps to reduce the orthographic projection size of the multiple support pillars 60 on the first substrate 10, reducing the space occupied by the support pillars 60 in the ink portions 21 or pixel electrodes 30. This helps to improve the resolution of the display panel 100, or improve the control effect of the pixel electrodes 30 on the electrophoretic particles 41, thereby increasing the response rate of the electrophoretic particles 41.

[0110] In some embodiments, please refer to Figures 7 to 9 The colored ink section 21 includes a plurality of repeating units C arranged in an array. Each repeating unit C includes at least one first ink section 22 and at least one second ink section 23. The support column 60 is located between the orthographic projections of adjacent repeating units C on the first substrate 10.

[0111] A repeating unit C is the smallest repeating unit composed of multiple adjacent ink portions 21. Multiple repeating units C are arranged in an array. For example, multiple repeating units C are arranged in an array along a first direction X and a second direction Y, respectively. The first direction X, the second direction Y, and the thickness direction Z of the display panel 100 intersect each other. Each repeating unit C includes at least a first ink portion 22 and a second ink portion 23. A single repeating unit C may include only one first ink portion 22 or multiple first ink portions 22. Similarly, a single repeating unit C may include only one second ink portion 23 or multiple second ink portions 23. Furthermore, a single repeating unit C may include only ink portions 21 of the first ink portion 22 and the second ink portion 23, or it may include ink portions 21 of other colors. This application embodiment does not impose any limitations on this.

[0112] In this embodiment, considering that the distance between adjacent repeating units C is often set to be greater than the distance between adjacent ink portions 21 in a single repeating unit C, the support column 60 is selected to be disposed in the area between adjacent repeating units C. This helps to improve the layout rationality between the support column 60 and the ink portion 21. Furthermore, this design also helps to increase the distance between the support column 60 and the ink portion 21 located in the repeating unit C, thereby reducing the amount of light reflected from the ink portion 21 to the support column 60, reducing the adverse effect of the support column 60 on the light, and improving the display effect.

[0113] In some alternative embodiments, the orthographic projections of multiple support pillars 60 on the first substrate 10 surround the orthographic projections of a single repeating unit C on the first substrate 10. In this way, the presence of support pillars 60 can reduce the risk of electrophoretic particles 41 moving across regions in the areas where different repeating units C are located, thereby improving the display reliability of the display panel 100.

[0114] In some embodiments, please refer to Figure 10 The plurality of ink portions 21 include a first type of ink portion 24 and a second type of ink portion 25. The plurality of pixel electrodes 30 include a first type of electrode 33 corresponding to the first type of ink portion 24 and a second type of electrode 32 corresponding to the second type of ink portion 25. The first type of ink portion 24 is located between the first type of electrode 33 in the orthographic projection of the first substrate 10. The second type of ink portion 25 is located between the two second type of electrodes 34 in the orthographic projection of the first substrate 10.

[0115] The support post 60 is located on the side of the first type electrode 33 facing away from the first substrate 10. The projection of the second type electrode 34 onto the first substrate 10 does not overlap with the projection of the support post 60 onto the first substrate 10. The projection area of ​​the first type electrode 33 onto the first substrate 10 is larger than the projection area of ​​the second type electrode 34 onto the first substrate 10.

[0116] The first type of ink section 24 is the ink section 21 closest to the support column 60 among the multiple ink sections 21. A single support column 60 can be provided with one or more first type of ink sections 24. For example, if the orthographic projection of a single support column 60 on the first substrate 10 is a dot-like structure, then the number of first type of ink sections 24 corresponding to that support column 60 is only one. If the orthographic projection of a single support column 60 on the first substrate 10 is a strip-like structure extending along the first direction x, then the corresponding first type of ink section 24 is a plurality of adjacent first ink sections 22 located on one side of the support column 60 along the second direction Y. Furthermore, considering that the number of support columns 60 within the display panel 100 is often multiple, the number of first type of ink sections 24 can also also be multiple.

[0117] Based on this, the second type of ink section 25 refers to the other ink sections 21 besides the first type of ink section 24 among the multiple ink sections 21. It should be noted that, unlike the first ink section 22 and the second ink section 23, each first ink section 22 corresponds to an ink section 21 of the same color, while each first type of ink section 24 may correspond to an ink section 21 of the same color or may correspond to an ink section 21 of different colors. Similarly, each second type of ink section 25 may correspond to an ink section 21 of the same color or may correspond to an ink section 21 of different colors.

[0118] A single first-type ink section 24 can be provided with multiple first-type electrodes 33. These multiple first-type electrodes 33 are located at different positions around the first-type ink section 24. Depending on the actual needs, the orthographic projection of the first-type electrodes 33 on the first substrate 10 can overlap with the orthographic projection of the first-type ink section 24 on the first substrate 10, or the orthographic projection of the first-type electrodes 33 on the first substrate 10 can be completely outside the orthographic projection of the first-type ink section 24 on the first substrate 10, as long as the orthographic projection of the first-type ink section 24 on the first substrate 10 is at least partially located between the orthographic projections of two first-type electrodes 33 on the first substrate 10. Here, the two first-type electrodes 33 refer to two first electrodes 31 adjacent in a single direction. The orthographic projections of the first-type ink section 24 and these two first-type electrodes 33 on the first substrate 10 can overlap, or they can not overlap. Furthermore, the relationship between the second-type ink section 25 and the second-type electrodes 34 is similar, and will not be elaborated further in this embodiment.

[0119] Furthermore, since the support post 60 is relatively close to the first type of ink section 24, it can be positioned on the side of the first type of electrode 33 facing away from the first substrate 10. That is, the orthographic projection of the support post 60 onto the first substrate 10 overlaps with the orthographic projection of the first type of electrode 33 onto the first substrate 10. However, since the support post 60 is relatively close to the second type of ink section 25, the orthographic projection of the second type of electrode 34 onto the first substrate 10 does not overlap with the orthographic projection of the support post 60 onto the first substrate 10. That is, the orthographic projection of the second type of electrode 34 onto the first substrate 10 is located outside the orthographic projection of the support post 60 onto the first substrate 10.

[0120] Based on this, considering that the support post 60 will block part of the structure in the first type of electrode 33, resulting in the first type of electrode 33 being unable to adsorb electrophoretic particles 41 in a part of the area away from the surface of the first substrate 10, and thus when the first type of electrode 33 adsorbs electrophoretic particles 41, some electrophoretic particles 41 may be suspended above the first type of ink section 24.

[0121] In view of this, the present application embodiment has differentiated the size of the first type of electrode 33 and the second type of electrode 34, so that the projected area of ​​the first type of electrode 33 on the first substrate 10 is larger than that of the second type of electrode 34 on the first substrate 10. Under this design, the first type of electrode 33 can still have a larger area size on the surface away from the first substrate 10 for adsorbing electrophoretic particles 41, thereby improving the adsorption capacity of the first type of electrode 33 for electrophoretic particles 41. As a result, when the first type of electrode 33 adsorbs electrophoretic particles 41, the number of electrophoretic particles 41 suspended above the first type of ink section 24 is reduced, and the display reliability of the display panel 100 at the first type of ink section 24 is improved.

[0122] In some embodiments, please refer to Figure 11 and Figure 12 The plurality of ink portions 21 include a first type of ink portion 24 and a second type of ink portion 25, and the plurality of pixel electrodes 30 include a first type of electrode 33 corresponding to the first ink portion 22 and a second type of electrode 32 corresponding to the second type of ink portion 25. The first type of ink portion 24 is located between the first type of electrode 33 in the orthographic projection of the first substrate 10, and the second type of ink portion 25 is located between the two second type of electrode 34 in the orthographic projection of the first substrate 10.

[0123] The support post 60 is located on the side of the first type electrode 33 facing away from the first substrate 10, and the orthographic projection of the second type electrode 34 onto the first substrate 10 does not overlap with the orthographic projection of the support post 60 onto the first substrate 10. The thickness of the first type ink portion 24 is greater than the thickness of the second type ink portion 25, and / or, the orthographic projection area of ​​the first type ink portion 24 onto the first substrate 10 is greater than the orthographic projection area of ​​the second type ink portion 25 onto the first substrate 10.

[0124] In some alternative embodiments, the thickness of the first type of ink portion 24 is greater than the thickness of the second type of ink portion 25, and the projected area of ​​the first type of ink portion 24 on the first substrate 10 is greater than the projected area of ​​the second type of ink portion 25 on the first substrate 10.

[0125] It should be noted that the "thickness of the first type of ink portion 24" mentioned here refers to the average size of the first type of ink portion 24 in the thickness direction Z of the display panel 100. The sizes of different regions within the first type of ink portion 24 in the thickness direction Z of the display panel 100 may be the same or different. The "thickness of the second type of ink portion 25" is similarly defined, and this embodiment does not impose any limitations on it.

[0126] For the ink section 21 itself, the reflective brightness of the ink section 21 is positively correlated with its thickness, and the reflective brightness of the ink section 21 is also positively correlated with its projected area. Based on this, under the same light intensity, the first type of ink section 24 can have a greater reflective brightness than the second type of ink section 25.

[0127] Regarding the case where the support post 60 is located on the side of the first type electrode 33 away from the first substrate 10, the support post 60 not only affects the ability of the first type electrode 33 to adsorb electrophoretic particles 41, but also affects the display effect of the display panel 100 at the first type ink section 24. Specifically, when the first type electrode 33 adsorbs electrophoretic particles 41, ambient light can propagate to the first type ink section 24 and be reflected into light of a specific color. However, since the support post 60 is close to the first type ink section 24 and has low light transmittance, some of the reflected light emitted at an angle from the first type ink section 24 will propagate to the support post 60 and be absorbed. This results in a decrease in the brightness of the display panel 100 at the first type ink section 24 at a wide viewing angle, thus causing uneven display at wide viewing angles.

[0128] Therefore, in this embodiment, the dimensions of the first type of ink portion 24 and the second type of ink portion 25 are differentiated, such that the projected area of ​​the first type of ink portion 24 on the first substrate 10 is larger than that of the second type of ink portion 25 on the first substrate 10, or the thickness of the first type of ink portion 24 is greater than that of the second type of ink portion 25. Regardless of the approach, the first type of ink portion 24 has a stronger light reflection effect relative to the second type of ink portion 25, thereby increasing the brightness of the display panel 100 at the first type of ink portion 24 over a wide viewing angle, reducing the risk of uneven display at a wide viewing angle caused by the support pillar 60, and improving the display reliability of the display panel 100.

[0129] In some embodiments, the first type of ink section 24 includes a green ink section 21.

[0130] As can be seen from the foregoing, the presence of the support column 60 mainly affects the light emitted from the first type of ink section 24 of the display panel 100 at wide viewing angles, thus causing uneven display at wide viewing angles. Furthermore, considering that the human eye is more sensitive to green light, and that the display panel 100 is mostly used in direct-view viewing scenarios, this embodiment of the application includes a green ink section 21 in the first type of ink section 24. This helps to further enhance the brightness of the green light emitted by the display panel 100 in direct-view viewing scenarios, thereby improving the display experience of the display panel 100 in direct-view viewing scenarios.

[0131] It should be noted that, considering there are multiple first-type ink sections 24, each first-type ink section 24 may include a green ink section 21, or only some of the first-type ink sections 24 may include a green ink section 21. Optionally, each first-type ink section 24 may include a green ink section 21, that is, the support column 60 is disposed near the periphery of the green ink section 21.

[0132] In some embodiments, the first ink portion 22 includes a green ink portion 21, and the second ink portion 23 includes a red ink portion 21 or a blue ink portion 21.

[0133] In this embodiment, green, red, and blue together constitute the three primary colors, which are the three basic colors that cannot be further decomposed. Considering that the human eye is more sensitive to green, the first ink part 22 is configured to include a green ink part 21, and the second ink part 23 is configured to include a red ink part 21 or a blue ink part 21. By means of the mutual combination of the reflected light from the first ink part 22 and the second ink part 23, the display panel 100 can produce other different colors, thereby satisfying the multi-color display effect of the display panel 100.

[0134] In some embodiments, please refer to Figure 13 and Figure 14 The thickness of the first ink portion 22 is greater than the thickness of the second ink portion 23; and / or, the projected area of ​​the first ink portion 22 on the first substrate 10 is greater than the projected area of ​​the second ink portion 23 on the first substrate 10.

[0135] In some alternative embodiments, the thickness of the first ink portion 22 is greater than the thickness of the second ink portion 23, and the projected area of ​​the first ink portion 22 on the first substrate 10 is greater than the projected area of ​​the second ink portion 23 on the first substrate 10.

[0136] For the ink section 21 itself, the reflective brightness of the ink section 21 is positively correlated with its thickness, and the reflective brightness of the ink section 21 is also positively correlated with its projected area. Based on this, under the same light irradiation conditions, the first ink section 22 can have a greater reflective brightness than the second ink section 23.

[0137] In this embodiment, considering that the human eye is generally more sensitive to green, the projected area of ​​the first ink portion 22 on the first substrate 10 is set to be larger than the projected area of ​​the second ink portion 23 on the first substrate 10, or the thickness of the first ink portion 24 is set to be larger than the thickness of the second ink portion 23. This results in the first ink portion 22 having a stronger light reflection effect relative to the second ink portion 23, increasing the brightness of the display panel 100 at the first ink portion 22, and improving the user experience of the display panel 100.

[0138] In some embodiments, such as Figure 13 and Figure 14 As shown, the plurality of ink portions 21 include a third ink portion 27, the second ink portion 23 includes a red ink portion 21, the third ink portion 27 includes a blue ink portion 21, the thickness of the third ink portion 27 is less than the thickness of at least one of the first ink portion 22 and the second ink portion 23; and / or, the orthographic projection area of ​​the third ink portion 27 on the first substrate 10 is less than the orthographic projection area of ​​at least one of the first ink portion 22 and the second ink portion 23 on the first substrate 10.

[0139] In addition to the first ink portion 22 and the second ink portion 23, the plurality of ink portions 21 may also include a third ink portion 27. The first ink portion 22, the second ink portion 23, and the third ink portion 27 respectively include a green ink portion 21, a red ink portion 21, and a blue ink portion 21. Based on this, considering the potential harm of blue light to the eyes, this embodiment of the application chooses to make the thickness of the third ink portion 27 less than the thickness of at least one of the first ink portion 22 and the second ink portion 23, or to make the projected area of ​​the third ink portion 27 on the first substrate 10 less than the projected area of ​​at least one of the first ink portion 22 and the second ink portion 23 on the first substrate 10. This makes the third ink portion 27 have a smaller light reflection capability than at least one of the first ink portion 22 and the second ink portion 23, thereby reducing the blue light brightness of the display panel 100 and improving the eye protection capability of the display panel 100.

[0140] In some alternative embodiments, the thicknesses of the first ink portion 22, the second ink portion 23, and the third ink portion 27 are reduced accordingly; and / or, the projected areas of the first ink portion 22, the second ink portion 23, and the third ink portion 27 on the first substrate 10 are reduced accordingly. This design can, on the one hand, increase the green light brightness of the display panel 100, improving the user experience of the display panel 100, and on the other hand, reduce the blue light brightness of the display panel 100, improving the eye protection capability of the display panel 100.

[0141] In some embodiments, such as Figure 1 As shown, the color ink layer 20 also includes a connecting portion 26 located between adjacent ink portions 21, and the pixel electrode 30 is located on the side of the connecting portion 26 away from the first substrate 10.

[0142] The connecting portion 26 is a structure in the colored ink layer 20 used to connect adjacent different ink portions 21. The connecting portion 26 can also be used to space adjacent different ink portions 21 apart, reducing the risk of material mixing between different ink portions 21 and improving the color accuracy of the reflected light corresponding to a single ink portion 21. Unlike the ink portions 21, the connecting portion 26 is not used to reflect ambient light. Therefore, compared to the ink portions 21, the connecting portion 26 has more material options. For example, the connecting portion 26 can include colored ink material, or it can include black or white ink material, or it can include other materials besides ink material. This embodiment does not limit these options.

[0143] Furthermore, the dimensional relationship between the connecting portion 26 and the ink portion 21 can take various forms. For example, the thickness of the connecting portion 26 can be greater than, equal to, or less than the thickness of the ink portion 21. Optionally, the thickness of the connecting portion 26 can be the same as the thickness of the ink portion 21, so that the surfaces of the connecting portion 26 and the ink portion 21 facing away from the first substrate 10 can jointly form a flat surface, thereby reducing the difficulty of fabricating other structures formed after the colored ink layer 20.

[0144] The pixel electrode 30 is located on the side of the connecting portion 26 away from the first substrate 10, that is, the orthographic projection of the pixel electrode 30 on the first substrate 10 overlaps with the orthographic projection of the connecting portion 26 on the first substrate 10. The orthographic projection of the pixel electrode 30 on the first substrate 10 may be located within the orthographic projection of the connecting portion 26 on the first substrate 10, or the orthographic projection of the pixel electrode 30 on the first substrate 10 may partially overlap with the orthographic projection of the ink portion 21 on the first substrate 10.

[0145] In this embodiment, the ink portion 21 includes a first bottom surface facing the first substrate 10, and the pixel electrode 30 includes a second bottom surface facing the first substrate 10. The presence of the connecting portion 26 allows the second bottom surface to be located on the side of the first bottom surface away from the first substrate 10. This allows the pixel electrode 30 to extend beyond the surface of the ink portion 21 away from the first substrate 10 without increasing the thickness of the pixel electrode 30. Specifically, at least a portion of the structure of the pixel electrode 30 at its sidewalls will not contact the ink portion 21 but will be exposed within the electrophoretic layer 40. Furthermore, when the pixel electrode 30 needs to adsorb electrophoretic particles 41 to meet the reflection requirements of the corresponding ink portion 21, the pixel electrode 30 can adsorb electrophoretic particles 41 not only at its surface away from the first substrate 10 but also at least a portion of the electrophoretic particles 41 at its sidewalls, thereby improving the adsorption capacity of the pixel electrode 30 for the electrophoretic particles 41. This also helps to reduce the distance between the electrophoretic particles 41 and the pixel electrode 30, thereby increasing the response rate of the electrophoretic particles 41 and improving the display effect of the display panel 100.

[0146] In some embodiments, please refer to Figures 15 to 17 The ink portion 21 has a first orthographic projection T1 on the first substrate 10, and the pixel electrode 30 has a second orthographic projection T2 on the first substrate 10. The second orthographic projection T2 and the first orthographic projection T1 are not overlapped. In other words, the second orthographic projection T2 is located outside the first orthographic projection T1 and is spaced apart from it.

[0147] In this embodiment, the second orthographic projection T2 corresponding to the pixel electrode 30 and the first orthographic projection T1 corresponding to the ink portion 21 are not overlapped. In this way, the pixel electrode 30 will not cover or block the ink portion 21. On this basis, ambient light can shine on various positions of the surface of the ink portion 21 away from the first substrate 10 and be reflected, thereby helping to improve the intensity of reflected light and improve the display brightness and display effect of the display panel 100.

[0148] In some embodiments, the first orthographic projection T1 has a first edge E1 facing the second orthographic projection T2, the second orthographic projection T2 has a second edge E2 facing the first orthographic projection T1, the distance between the first edge E1 and the second edge E2 is L, and the diameter of the electrophoretic particle 41 is D; wherein, L≥D.

[0149] It should be noted that the "first edge E1 and second edge E2" mentioned here refer to the following: for a single ink portion 21 and its corresponding pixel electrode 30, the first edge E1 is the edge of the ink portion 21's first orthographic projection T1 facing the pixel electrode 30's second orthographic projection T2, and the second edge E2 is the edge of the pixel electrode 30's second orthographic projection T2 facing the ink portion 21's first orthographic projection T1. Furthermore, the "diameter D of the electrophoretic particle 41" mentioned here refers to the following: if the electrophoretic particle 41 is a regular spherical structure, then D is the diameter of that spherical structure; if the electrophoretic particle 41 is an irregular sphere or other structure, then D is the maximum cross-sectional length of that structure.

[0150] Furthermore, the first edge E1 and the second edge E2 can both be straight lines, or at least one of them can include arcs or broken lines. The first edge E1 and the second edge E2 can be arranged parallel to each other or not parallel. This application embodiment does not limit this. The "distance L between the first edge E1 and the second edge E2" refers to the maximum distance between the first edge E1 and the second edge E2 in the arrangement direction of the first orthographic projection T1 and the second orthographic projection T2.

[0151] In this embodiment, considering that at least some of the electrophoretic particles 41 will adhere to the sidewall of the pixel electrode 30 when the electrophoretic particles 41 do not block the ink portion 21, the distance L between the first edge E1 and the second edge E2 is set to be greater than the diameter D of the electrophoretic particles 41. This reduces the blocking effect of the electrophoretic particles 41 adsorbed on the sidewall of the pixel electrode 30 on the ink portion 21, thereby helping to improve the intensity of reflected light, the display brightness of the display panel 100, and the display effect.

[0152] In some embodiments, please refer to Figure 15 and Figure 18 The distance between the first edge E1 of the first ink portion 22 and the second edge E2 of the first electrode 31 is L1, and the distance between the first edge E1 of the second ink portion 23 and the second edge E2 of the second electrode 32 is L2; ​​wherein, L1 > L2.

[0153] The first ink section 22 and the second ink section 23 are ink sections 21 of different colors. The first electrode 31 is the pixel electrode 30 corresponding to the first ink section 22, and the second electrode 32 is the pixel electrode 30 corresponding to the second ink section 23. In this case, L1 represents the distance between the first edge E1 of the first ink section 22 and the second edge E2 of the first electrode 31, while L2 represents the distance between the first edge E1 of the second ink section 23 and the second edge E2 of the second electrode 32.

[0154] Furthermore, in this embodiment, the distance L1 is set to be greater than the distance L2, that is, the distance between the first ink portion 22 and the first electrode 31 in the direction parallel to the plane of the first substrate 10 is greater than the distance between the second ink portion 23 and the second electrode 32 in the direction parallel to the plane of the first substrate 10. In this way, when both the first electrode 31 and the second electrode 32 adsorb electrophoretic particles 41, the influence of the electrophoretic particles 41 located on the sidewall of the first electrode 31 on the first ink portion 22 can be less than the influence of the electrophoretic particles 41 located on the sidewall of the second electrode 32 on the second ink portion 23. This helps to increase the reflected light intensity of the display panel 100 at the first ink portion 22, so that there is a difference in the reflected light intensity corresponding to the first ink portion 22 and the second ink portion 23, thus meeting the different needs of the display panel 100.

[0155] Optionally, considering that the human eye is more sensitive to green light, the first ink section 22 can be configured to include a green ink section 21, and the second ink section 23 can be configured to include either a blue ink section 21 or a red ink section 21. Based on this, the embodiments of this application increase the reflective brightness of green light by setting the distance L1 to be greater than the distance L, thereby improving the user experience of the display panel 100.

[0156] In some embodiments, please refer to Figure 19 The pixel electrode 30 is disposed in the same layer as the ink section 21. In other words, at least a portion of the sidewall of the pixel electrode 30 can be disposed in contact with the sidewall of the ink section 21.

[0157] It should be noted that there are various dimensional relationships between the pixel electrode 30 and the ink portion 21. For example, the thickness of the pixel electrode 30 may be less than or equal to the thickness of the ink portion 21, or the thickness of the pixel electrode 30 may be greater than the thickness of the ink portion 21. Furthermore, the surface of the pixel electrode 30 facing away from the first substrate 10 may be flush with the surface of the ink portion 21 facing away from the first substrate 10, or it may be located on the side of the surface of the ink portion 21 facing away from the first substrate 10 that is towards or away from the first substrate 10.

[0158] In this embodiment, since the pixel electrode 30 and the ink section 21 are disposed on the same layer, adjacent different ink sections 21 can be separated by means of the pixel electrode 30, thereby reducing the risk of material mixing between different ink sections 21, improving the color accuracy of the reflected light corresponding to a single ink section 21, and improving the display effect of the display panel 100.

[0159] In some embodiments, please refer to Figure 20In a direction perpendicular to the plane of the first substrate 10, the distance between the pixel electrode 30 and the surface of the first substrate 10 is greater than the distance between the ink portion 21 and the surface of the first substrate 10. The direction perpendicular to the plane of the first substrate 10 is the thickness direction Z of the first substrate 10.

[0160] Referring to the accompanying drawings, the surface of the ink portion 21 facing away from the first substrate 10 is a first top surface M1, and the surface of the pixel electrode 30 facing away from the first substrate 10 is a second top surface M2. The second top surface M2 is located on the side of the first top surface M1 facing away from the first substrate 10. Based on this, at least a portion of the structure of the pixel electrode 30 at its sidewalls does not come into contact with the ink portion 21, but is exposed within the electrophoretic layer 40. Therefore, when the pixel electrode 30 needs to adsorb electrophoretic particles 41 to meet the reflection requirements of the corresponding ink portion 21, the pixel electrode 30 can adsorb electrophoretic particles 41 not only at the location facing away from the second top surface M2, but also at least a portion of the electrophoretic particles 41 at its sidewalls, thereby improving the adsorption capacity of the pixel electrode 30 for the electrophoretic particles 41. This also helps to reduce the distance between the electrophoretic particles 41 and the pixel electrode 30, thereby increasing the response rate of the electrophoretic particles 41 and improving the display effect of the display panel 100.

[0161] In some embodiments, please refer to Figure 20 and Figure 21 The pixel electrode 30 includes a first protrusion 35 located on the side of the ink portion 21 facing away from the first substrate 10. In the direction parallel to the plane of the first substrate 10, the first protrusion 35 has a first sidewall 351, and in the direction perpendicular to the plane of the first substrate 10, the first protrusion 35 has a first bottom wall 352 facing the first substrate 10. The included angle between the first sidewall 351 and the first bottom wall 352 is α1, where 0 < α1 < 90°.

[0162] The term "parallel to the plane of the first substrate 10" refers to a direction perpendicular to the thickness direction Z of the first substrate 10. Specifically, in this direction parallel to the plane of the first substrate 10, the ink portion 21 is at least partially located between its two corresponding pixel electrodes 30.

[0163] The first protrusion 35 is a portion of the pixel electrode 30 that extends beyond the ink portion 21 on the side facing away from the first substrate 10. Figure 20 In addition to the first protrusion 35, the pixel electrode 30 also includes a first body portion 36. The first body portion is a part of the pixel electrode 30 that does not extend beyond the surface of the ink portion 21 on the side away from the first substrate 10, and the first body portion 36 is integrally connected to the first protrusion 35.

[0164] The first bottom wall 352 and the first side wall 351 are the wall structures of the first protrusion 35 at different positions. The first bottom wall 352 can be arranged parallel to the plane of the first substrate 10, that is, the first bottom wall 352 can also be perpendicular to the thickness direction Z of the first substrate 10. The first side wall 351 can have various forms, such as a planar structure or an arc surface.

[0165] Based on this, if both the first bottom wall 352 and the first side wall 351 are planar structures, then α1 represents the angle between the two planar structures; if the first bottom wall 352 is a planar structure and the first side wall 351 is an arc-shaped structure, then α1 represents the angle between the tangent plane of the arc-shaped structure at the contact position with the planar structure and the planar structure.

[0166] Furthermore, 0 < α1 < 90° indicates that in the direction perpendicular to the plane of the first substrate 10 and away from the first substrate 10, the first sidewall 351 of the pixel electrode 30 is inclined away from the adjacent corresponding ink portion 21. With this design, a portion of the wide-viewing-angle light reflected by the ink portion 21 can exit the display panel 100 along the slope of the first sidewall 351 without illuminating the pixel electrode 30 and being absorbed. This helps to improve the display brightness of the display panel 100 under wide-viewing-angle conditions and expands the application scenarios of the display panel 100.

[0167] It should be noted that the specific value of α1 is not limited in this embodiment. Optionally, α1 can be one of 5°, 10°, 15°, 20°, 30°, 35°, 45°, 55°, 60°, 75°, and 80°. The first body portion can also include a bottom wall and side wall structures. The relationship between the bottom wall structure and the side wall structure can be the same as or different from the relationship between the first bottom wall 352 and the first side wall 351. Optionally, the side wall structure corresponding to the first body portion is coplanar with the first side wall 351, and the two together form a continuous planar structure or curved surface structure.

[0168] In some embodiments, please refer to Figure 22 In a direction perpendicular to the plane of the first substrate 10, the distance between the ink portion 21 and the surface of the first substrate 10 is greater than the distance between the pixel electrode 30 and the surface of the first substrate 10.

[0169] As can be seen from the accompanying drawings, the first top surface M1 is located on the side of the second top surface M2 that is away from the first substrate 10, and the pixel electrode 30 does not completely block the sidewall of the ink portion 21. That is, at least a portion of the structure of the ink portion 21 at its own sidewall will not come into contact with the ink portion 21, but will be exposed within the electrophoretic layer 40. Based on this, when the ink portion 21 needs to reflect light to meet display requirements, ambient light can not only propagate to the first top surface M1 and be reflected, but also propagate to the sidewall of the pixel electrode 30 and be reflected. This helps to improve the light reflection capability of the ink portion 21 and increase the display brightness of the display panel 100.

[0170] It should be noted that the ink portion 21 and the pixel electrode 30 can have various positional relationships. For example, the orthographic projection of the ink portion 21 onto the first substrate 10 can be located outside the orthographic projection of the corresponding pixel electrode 30 onto the first substrate 10, and the two can be spaced apart or adjacent to each other. Alternatively, the portion of the ink portion 21 that extends beyond the pixel electrode 30 in the thickness direction Z of the first substrate 10 can cover the portion of the surface of the pixel electrode 30 facing away from the first substrate 10. This application does not limit this.

[0171] In some embodiments, please refer to Figure 22 and Figure 23 The ink section 21 includes a second protrusion 211 located on the side of the pixel electrode 30 away from the first substrate 10. The second protrusion 211 is disposed overlapping the edge of the orthographic projection of the pixel electrode 30 on the first substrate 10.

[0172] The second protrusion 211 is a portion of the ink portion 21 that extends beyond the surface of the pixel electrode 30 on the side facing away from the first substrate 10. Figure 22 In addition to the second protrusion 211, the ink part 21 also includes a second body part 213. The second body part 213 is a part of the ink part 21 that does not extend beyond the surface of the pixel electrode 30 on the side away from the first substrate 10, and the second body part 213 is integrally connected with the second protrusion 211.

[0173] In this embodiment, the second protrusion 211 is away from the top surface of the first substrate 10, and the side surface of the second protrusion 211 is exposed in the electrophoretic layer 40. The top surface and side surface of the second protrusion 211 can be used to reflect ambient light to meet the display needs of the display panel 100 at the ink section 21. On this basis, by increasing the size of the second protrusion 211, so that its orthographic projection on the first substrate 10 overlaps with the edge of the orthographic projection of the pixel electrode 30 on the first substrate 10, it helps to increase the size of at least one of the top surface and side surface of the second protrusion 211, thereby enhancing the reflective effect of the ink section 21 on ambient light and improving the display brightness of the display panel 100.

[0174] Furthermore, since the second ink section 23 only covers the edge area of ​​the pixel electrode 30, while the central area of ​​the pixel electrode 30 on the side facing away from the first substrate 10 is still exposed in the electrophoretic layer 40, it plays the role of adsorbing electrophoretic particles 41, thereby meeting the screen switching needs of the display panel 100.

[0175] In some embodiments, please refer to Figure 24 The overlapping area of ​​the second protrusion 211 corresponding to the first ink portion 22 and the pixel electrode 30 in the orthographic projection of the first substrate 10 is greater than the overlapping area of ​​the second protrusion 211 corresponding to the second ink portion 23 and the pixel electrode 30 in the orthographic projection of the first substrate 10.

[0176] As can be seen from the foregoing, the size of the second protrusion 211 often determines the reflective effect of the ink portion 21 on ambient light. Based on this, by increasing the overlapping area of ​​the second protrusion 211 and the corresponding orthographic projection of the pixel electrode 30, the size of at least one of the top or side surfaces of the second protrusion 211 can be increased, thereby improving its reflective effect on ambient light.

[0177] Based on this, in this embodiment, the overlap area between the second protrusion 211 corresponding to the first ink portion 22 and the pixel electrode 30 is set to be greater than the overlap area between the second protrusion 211 corresponding to the second ink portion 23 and the pixel electrode 30. This helps to increase the reflected light intensity of the display panel 100 at the first ink portion 22, so that there is a difference in the reflected light intensity between the first ink portion 22 and the second ink portion 23, thus meeting the different needs of the display panel 100.

[0178] Optionally, considering that the human eye is more sensitive to green light, the first ink portion 22 can be provided to include a green ink portion 21, and the second ink portion 23 can be provided to include either a blue ink portion 21 or a red ink portion 21. Based on this, in this embodiment, by setting the overlap area of ​​the second protrusion 211 corresponding to the first ink portion 22 and the pixel electrode 30 on the orthographic projection of the first substrate 10 to be greater than the overlap area of ​​the second protrusion 211 corresponding to the second ink portion 23 and the pixel electrode 30 on the orthographic projection of the first substrate 10, it helps to increase the reflected brightness of green light and improve the user experience of the display panel 100.

[0179] Of course, in addition to changing the orthographic projection size of the second protrusion 211 corresponding to different ink portions 21 on the first substrate 10, in some other embodiments, the thickness of the first ink portion 22 corresponding to the second protrusion 211 can also be set to be greater than the thickness of the first ink portion 22 corresponding to the second protrusion 211. In this way, the reflected light intensity corresponding to the first ink portion 22 and the second ink portion 23 can also be different to meet the different needs of the display panel 100.

[0180] In some embodiments, please refer to Figure 25 In a direction parallel to the plane of the first substrate 10, the second protrusion 211 has a second sidewall, wherein the second sidewall includes a first arc surface 212 and protrudes outward.

[0181] The second sidewall is the peripheral wall surface of the second protrusion 211. The second sidewall includes a first arc surface 212, meaning the second sidewall has a curved area that convex outwards. In this embodiment, some ambient light can be reflected at the second sidewall to increase the intensity of reflected light at the ink portion 21. Furthermore, by providing the second sidewall with an outwardly protruding first arc surface 212, the diffusion uniformity of light at the second sidewall is improved. This allows ambient light to diffuse in more directions after reflection, reducing the risk of dark lines due to lower reflection brightness between adjacent ink portions 21 and improving display uniformity.

[0182] In some embodiments, such as Figure 25 As shown, the angle between the tangent plane 214 of the first arc surface 212 at the contact position with the pixel electrode 30 and the surface of the pixel electrode 30 facing away from the first substrate 10 is α2, where α2 satisfies: 5°≤α2≤65°. Optionally, α2 is one of 5°, 25°, 30°, 45°, 60°, and 65°.

[0183] Because the first arc surface 212 protrudes outward, the angle α2 between the tangent plane of the first arc surface 212 at the contact position with the pixel electrode 30 and the second top surface M2 is greater than the angle between the tangent plane of the first arc surface 212 at other positions and the second top surface M2. Furthermore, the angle between the tangent plane 214 of the first arc surface 212 at the contact position with the top surface of the second protrusion 211 and the second top surface M2 can be 0°. In other words, in a direction perpendicular to the plane of the first substrate 10 and away from the first substrate 10, the angle between the corresponding tangent plane of the first arc surface 212 and the second top surface M2 gradually decreases and eventually becomes 0, while α2 is the largest angle that can be formed between the tangent planes of the first arc surface 212 and the second top surface M2.

[0184] Furthermore, in this embodiment, by setting the included angle α2 to not less than 5°, the first arc surface 212 can have a relatively large degree of curvature, thereby improving the reflection and diffusion effect of the first arc surface 212 on ambient light and reducing the risk of dark lines appearing on the display panel 100. At the same time, the included angle α2 is set to not more than 65°, thereby reducing the risk of color mixing and bright lines caused by the overlap of reflected light from different ink parts 21, which helps to further improve the display uniformity and reliability of the display panel 100.

[0185] In some embodiments, the colored ink layer 20 includes a plurality of repeating units C arranged in an array, each repeating unit C including at least one first ink portion 22 and at least one second ink portion 23. The curvature of the first arc surface 212 corresponding to the ink portion 21 located at the inner edge of the repeating unit C is greater than the curvature of the first arc surface 212 corresponding to other ink portions 21 within the repeating unit C.

[0186] The "ink section 21 located at the inner edge of the repeating unit C" mentioned here refers to: the ink section 21 in a single repeating unit C that is closest to other adjacent repeating units C, combined with... Figure 5 For example, the repeating unit C includes a first ink section 22, a second ink section 23 and a third ink section 27 arranged side by side along the first direction X, and multiple repeating units C are arranged side by side along the first direction X. On this basis, the first ink section 22 and the third ink section 27 are ink sections 21 located at the inner edge of the repeating unit C, while the second ink section 23 is the other ink sections 21 within the repeating unit C.

[0187] Considering that the distance between adjacent repeating units C is often greater than the distance between adjacent ink portions 21 within a single repeating unit C, it is easy for the reflected light corresponding to the ink portion 21 to fail to completely cover the area between adjacent repeating units C, which in turn makes the display panel 100 prone to dark patterns between adjacent repeating units C.

[0188] Therefore, in this embodiment, the curvature of the first arc surface 212 corresponding to the ink portion 21 located at the inner edge of the repeating unit C is set to be greater than the curvature of the first arc surface 212 corresponding to other ink portions 21 within the repeating unit C. This results in the first arc surface 212 of the ink portion 21 at the edge having a larger curvature, thereby increasing its ability to reflect and diffuse ambient light. This allows the reflected light to better cover the area between adjacent repeating units C, reducing the risk of dark lines. Simultaneously, the first arc surface 212 of the ink portions 21 at other locations has a smaller curvature, thereby reducing the risk of color mixing and bright lines caused by overlapping reflected light from different ink portions 21. This helps to further improve the display uniformity and reliability of the display panel 100.

[0189] In some embodiments, please refer to Figure 26The display panel 100 also includes a common electrode 50 located on the side of the electrophoretic layer 40 facing away from the first substrate 10. The common electrode 50 includes a plurality of electrode portions 51, the orthographic projections of different electrode portions 51 onto the first substrate 10 covering the orthographic projections of different pixel electrodes 30 onto the first substrate 10. Each electrode portion 51 includes a first surface 52 facing the pixel electrode 30. In a direction parallel to the plane of the first substrate 10 and pointing from the center of the pixel electrode 30 to the edge, the distance between the second arc surface 53 and the first substrate 10 gradually decreases. In other words, the second arc surface 53 protrudes away from the first substrate 10. Figure 25 In the diagram, a single electrode portion 51 is shown by a dashed box.

[0190] The electrode portion 51 is a part of the common electrode 50 that corresponds to a single pixel electrode 30. The pixel electrode 30 and the corresponding electrode portion 51 can jointly form an electric field structure to drive the distribution state of electrophoretic particles 41 in a certain region of the electrophoretic layer 40. Different electrode portions 51 are connected and integrally disposed.

[0191] The orthographic projection of the electrode portion 51 onto the first substrate 10 typically covers and extends beyond the orthographic projection of the corresponding pixel electrode 30 onto the first substrate 10; that is, the orthographic projection area of ​​a single electrode portion 51 onto the first substrate 10 is often larger than the orthographic projection area of ​​a single pixel electrode 30 onto the first substrate 10. Based on this, the multiple electric field lines within the electric field structure formed by a single pixel electrode 30 and its corresponding electrode portion 51 are not all parallel to the thickness direction Z of the first substrate 10, and the closer to the edge of the electrode portion 51, the larger the angle between the corresponding electric field lines and the thickness direction Z of the first substrate 10. Figure 25 In the diagram, electric field lines are represented by virtual straight lines.

[0192] In view of this, the first surface 52 of the electrode portion 51 is configured to include a second arc surface 53 protruding in a direction away from the first substrate 10. The extension direction of the radius of the second arc surface 53 at different positions can be the same as or similar to the direction of the electric field line corresponding to that position. Based on this, when the electrophoretic particle 41 moves from the electrode portion 51 to the pixel electrode 30 or from the pixel electrode 30 to the electrode portion 51, the movement direction of the electrophoretic particle 41 can be consistent with or similar to the direction corresponding to the electric field line. This helps to improve the movement speed of the electrophoretic particle 41, improve the response rate, and meet the needs of rapid switching of the display panel 100 screen.

[0193] In some embodiments, at least a portion of the ink portion 21 includes ink portion 21 materials of different colors stacked together.

[0194] The ink section 21 can be formed by mixing and color-matching multiple ink materials. For example, to meet the requirement of a specific reflected light color, a specific color ink section 21 can be prepared using a subtractive color mixing method. This method utilizes the reflection and absorption of light waves to obtain a specific color of light. When light passes through a pigment or colored object, these objects absorb or "subtract" certain colors of light, and the reflected light is the color of the object as we see it. Taking the green ink section 21 as an example, it can include yellow ink material and cyan ink material. Ambient light is absorbed by the yellow and cyan ink materials in the green ink section 21, leaving green light which is then reflected, thus achieving the green light display requirement. The red ink section 21 can include magenta ink material and yellow ink material. The blue ink section 21 can include magenta ink material and cyan ink material.

[0195] In this embodiment, by mixing and matching various ink materials, multiple ink sections 21 of different colors can be formed to meet the different color requirements of the display panel 100 and realize the multi-color display requirements of the display panel 100.

[0196] Secondly, please refer to Figure 27 This application provides a display device 200, which includes the display panel in any of the foregoing embodiments.

[0197] It should be noted that the display device 200 provided in this application embodiment has the beneficial effects of the display panel in any of the foregoing embodiments. For details, please refer to the foregoing description of the beneficial effects of the display panel 100. This application embodiment will not repeat the description.

[0198] Thirdly, please refer to Figure 28 As shown in Figure 29, this application embodiment provides a method for manufacturing a display panel 100, including:

[0199] S100: A connection functional layer is formed on one side of the first substrate.

[0200] Please see Figure 29a In step S100, the first substrate 10 serves as a support and bearing layer, and the connecting functional layer 70 is located on one side of the first substrate 10 in the thickness direction Z. The connecting functional layer 70 is used to form the connecting portion in the future.

[0201] S110: Etching process for the connection functional layer.

[0202] Please see Figure 29bIn step S110, a plurality of spaced-apart opening structures 71 are formed by etching, and the integral machine is located at the connection portion 26 between adjacent opening structures 71. The opening structure 71 is used to subsequently accommodate the ink portion 21.

[0203] S120: Multiple ink sections are formed within multiple opening structures.

[0204] Please see Figure 29c In step S120: the plurality of ink portions 21 include a first ink portion 22 and a second ink portion 23 of different colors. The specific colors of the first ink portion 22 and the second ink portion 23 are not limited in this embodiment. Optionally, the first ink portion 22 includes a green ink portion 21, and the second ink portion 23 includes either a red ink portion 21 or a blue ink portion 21. Furthermore, the method of forming the ink portions 21 is also not limited in this embodiment; optionally, the ink portions 21 can be formed by inkjet printing or other methods.

[0205] S130: Multiple pixel electrodes are formed on the side of the connector away from the first substrate.

[0206] Please see Figure 29d In step S130, the pixel electrode 30 includes a first electrode 31 corresponding to the first ink portion 22 and a second electrode 32 corresponding to the second ink portion 23. The first ink portion 22 is located between at least two first electrodes 31 in the orthographic projection of the first substrate 10, and the second ink portion 23 is located between at least two second electrodes 32 in the orthographic projection of the first substrate 10.

[0207] The "first electrode 31 corresponding to the first ink portion 22" mentioned here refers to the first electrode 31 being able to control a portion of the electrophoretic particles 41 corresponding to the position of the first ink portion 22. In other words, the electrophoretic layer 40 has a first region that coincides with the orthographic projection of the first ink portion 22 on the first substrate 10, and the first electrode 31 is able to control the distribution state of the electrophoretic particles 41 located in the first region. The "second electrode 32 corresponding to the second ink portion 23" is similar, and will not be described again in the embodiments of this application.

[0208] S140: An electrophoretic layer is formed on the side of the pixel electrode away from the first substrate.

[0209] Please see Figure 29eIn step S140, the electrophoretic layer 40 includes electrophoretic particles 41. The electrophoretic layer 40 contains only one type of electrophoretic particle 41, which can block ambient light. The first electrode 31 and the second electrode 32 are respectively disposed corresponding to the first ink section 22 and the second ink section 23, and independently control the distribution of the electrophoretic particles 41 at corresponding positions in the first ink section 22 and the second ink section 23. Based on this, the display panel 100 can selectively control whether the electrophoretic particles 41 cover the area of ​​the first ink section 22 through the first electrode 31, thereby adjusting the amount of ambient light propagating to the first ink section 22 and achieving display control of a specific color corresponding to the first ink section 22. Furthermore, the second electrode 32 can selectively control whether the electrophoretic particles 41 cover the area of ​​the second ink section 23, thereby adjusting the amount of ambient light propagating to the second ink section 23 and achieving display control of a specific color corresponding to the second ink section 23. In this case, the display panel 100 can achieve the display requirements of color images by working together with the color ink layer 20, the electrophoretic layer 40 and the pixel electrode 30.

[0210] In this embodiment, by first forming a connecting portion 26 with an opening structure 71, different ink portions 21 are formed in different opening structures 71. This allows the opening structure 71 to define the location of a single ink portion 21, and the connecting portion 26 to separate the different ink portions 21 from each other. This design helps to reduce the manufacturing difficulty of the display panel 100 and improve the manufacturing yield.

[0211] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0212] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: First substrate; A colored ink layer is disposed on one side of the first substrate. The colored ink layer includes a plurality of ink portions, including a first ink portion and a second ink portion of different colors. Multiple pixel electrodes are disposed on one side of the first substrate, and each pixel electrode includes a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion; An electrophoretic layer is disposed on the side of the colored ink layer and the pixel electrode opposite to the first substrate, and the electrophoretic layer includes electrophoretic particles; Wherein, the first ink portion in the orthographic projection of the first substrate is at least partially located between the orthographic projections of the two first electrodes in the first substrate, and the second ink portion in the orthographic projection of the first substrate is at least partially located between the orthographic projections of the two second electrodes in the first substrate. The ink portion has a first orthographic projection on the first substrate, and the pixel electrode has a second orthographic projection on the first substrate, wherein the second orthographic projection and the first orthographic projection are not overlapped; or, the pixel electrode and the ink portion are disposed in the same layer.

2. The display panel according to claim 1, characterized in that, The display panel further includes a common electrode located on the side of the electrophoretic layer opposite to the first substrate. The electrophoretic particles are positively charged. The display panel has a first color state and a second color state. In the first color state, the voltage of the common electrode is V1, the voltage of the first electrode is V2, and the voltage of the second electrode is V3, where V3 > V1 > V2. In the second color state, the voltage of the common electrode is V4, the voltage of the first electrode is V5, and the voltage of the second electrode is V6, where V5 > V4 > V6.

3. The display panel according to claim 2, characterized in that, The display panel also has a black state, in which the voltage of the common electrode is V7, where V7 < 0.

4. The display panel according to claim 1, characterized in that, The projections of the first electrodes corresponding to the first ink portion onto the first substrate surround the projection of the first ink portion onto the first substrate, and the projections of the second electrodes corresponding to the second ink portion onto the first substrate surround the projection of the second ink portion onto the first substrate, with the first electrodes and the second electrodes being spaced apart.

5. The display panel according to claim 4, characterized in that, The plurality of first electrodes corresponding to the first ink portion are connected to each other; and / or, the plurality of second electrodes corresponding to the second ink portion are connected to each other.

6. The display panel according to claim 1, characterized in that, It also includes support pillars disposed within the electrophoretic layer, wherein the orthographic projection of the support pillars on the first substrate is disposed between the orthographic projections of adjacent ink portions on the first substrate; In some cases, the support pillars are not provided between adjacent ink sections.

7. The display panel according to claim 6, characterized in that, The colored ink layer includes a plurality of repeating units arranged in an array, and each repeating unit includes at least one first ink portion and at least one second ink portion; Wherein, the orthographic projection of the support column onto the first substrate is located between the orthographic projections of the adjacent repeating units onto the first substrate.

8. The display panel according to claim 6, characterized in that, The plurality of ink portions include a first type of ink portion and a second type of ink portion, and the plurality of pixel electrodes include a first type of electrode corresponding to the first type of ink portion and a second type of electrode corresponding to the second type of ink portion. The orthographic projection of the first type of ink portion on the first substrate is at least partially located between the orthographic projections of two first type of electrodes on the first substrate, and the orthographic projection of the second type of ink portion on the first substrate is at least partially located between the orthographic projections of two second type of electrodes on the first substrate. The support post is located on the side of the first type of electrode away from the first substrate, and the orthographic projection of the second type of electrode on the first substrate does not overlap with the orthographic projection of the support post on the first substrate. The projected area of ​​the first type of electrode on the first substrate is greater than the projected area of ​​the second type of electrode on the first substrate.

9. The display panel according to claim 6, characterized in that, The plurality of ink portions include a first type of ink portion and a second type of ink portion, and the plurality of pixel electrodes include a first type of electrode corresponding to the first type of ink portion and a second type of electrode corresponding to the second type of ink portion. The orthographic projection of the first type of ink portion on the first substrate is at least partially located between the orthographic projections of two first type of electrodes on the first substrate, and the orthographic projection of the second type of ink portion on the first substrate is at least partially located between the orthographic projections of two second type of electrodes on the first substrate. The support post is located on the side of the first type of electrode away from the first substrate, and the orthographic projection of the second type of electrode on the first substrate does not overlap with the orthographic projection of the support post on the first substrate. Wherein, the thickness of the first type of ink portion is greater than the thickness of the second type of ink portion, and / or, the projected area of ​​the first type of ink portion on the first substrate is greater than the projected area of ​​the second type of ink portion on the first substrate.

10. The display panel according to claim 9, characterized in that, The first type of ink section includes a green ink section.

11. The display panel according to claim 1, characterized in that, The first ink section includes a green ink section, and the second ink section includes a red ink section or a blue ink section.

12. The display panel according to claim 11, characterized in that, The thickness of the first ink portion is greater than the thickness of the second ink portion; and / or, The projected area of ​​the first ink portion on the first substrate is greater than the projected area of ​​the second ink portion on the first substrate.

13. The display panel according to claim 11, characterized in that, The plurality of ink portions include a third ink portion, the second ink portion includes a red ink portion, and the third ink portion includes a blue ink portion; The thickness of the third ink portion is less than the thickness of at least one of the first ink portion and the second ink portion; And / or, the projected area of ​​the third ink portion on the first substrate is smaller than the projected area of ​​at least one of the first ink portion and the second ink portion on the first substrate.

14. The display panel according to claim 1, characterized in that, The colored ink layer also includes a connecting portion located between adjacent ink portions, and the pixel electrode is located on the side of the connecting portion away from the first substrate.

15. The display panel according to claim 1, characterized in that, The first orthographic projection has a first edge facing the second orthographic projection, the second orthographic projection has a second edge facing the first orthographic projection, the distance between the first edge and the second edge is L, and the diameter of the electrophoretic particle is D; wherein, L≥D.

16. The display panel according to claim 15, characterized in that, The distance between the first edge of the first ink portion and the second edge of the first electrode is L1, and the distance between the first edge of the second ink portion and the second edge of the second electrode is L2; ​​wherein, L1 > L2.

17. The display panel according to claim 1, characterized in that, In a direction perpendicular to the plane of the first substrate, the distance between the pixel electrode and the surface of the first substrate is greater than the distance between the ink portion and the surface of the first substrate.

18. The display panel according to claim 17, characterized in that, The pixel electrode includes a first protrusion located on the side of the ink portion away from the first substrate. In a direction parallel to the plane of the first substrate, the first protrusion has a first sidewall, and in a direction perpendicular to the plane of the first substrate, the first protrusion has a first bottom wall facing the first substrate. The angle between the first sidewall and the first bottomwall is α1, where 0 < α1 < 90°.

19. The display panel according to claim 1, characterized in that, In a direction perpendicular to the plane of the first substrate, the distance between the surface of the ink portion away from the first substrate and the first substrate is greater than the distance between the surface of the pixel electrode away from the first substrate and the first substrate.

20. The display panel according to claim 19, characterized in that, The ink portion includes a second protrusion located on the side of the pixel electrode opposite to the first substrate, wherein the second protrusion is disposed overlapping the edge of the orthographic projection of the pixel electrode on the first substrate.

21. The display panel according to claim 20, characterized in that, The overlapping area of ​​the second protrusion corresponding to the first ink portion and the pixel electrode in the orthographic projection of the first substrate is greater than the overlapping area of ​​the second protrusion corresponding to the second ink portion and the pixel electrode in the orthographic projection of the first substrate.

22. The display panel according to claim 20, characterized in that, In a direction parallel to the plane of the first substrate, the second protrusion has a second sidewall; The second sidewall includes a first arc surface and protrudes outward.

23. The display panel according to claim 22, characterized in that, The angle between the tangent plane of the first arc surface at the contact position with the pixel electrode and the surface of the pixel electrode on the side away from the first substrate is α2, and α2 satisfies: 5°≤α2≤65°.

24. The display panel according to claim 22, characterized in that, The colored ink layer includes a plurality of repeating units arranged in an array, and each repeating unit includes at least one first ink portion and at least one second ink portion; Wherein, the curvature of the first arc surface corresponding to the ink portion located at the inner edge of the repeating unit is greater than the curvature of the first arc surface corresponding to the other ink portions located within the repeating unit.

25. The display panel according to claim 1, characterized in that, The display panel further includes a common electrode located on the side of the electrophoretic layer opposite to the first substrate. The common electrode includes multiple electrode portions, and the orthographic projection of different electrode portions on the first substrate covers the orthographic projection of different pixel electrodes on the first substrate. The electrode portion includes a first surface facing the pixel electrode, the first surface including a second arcuate surface covering and extending beyond the pixel electrode, and the distance between the second arcuate surface and the first substrate gradually decreases in a direction parallel to the first substrate and pointing from the center of the pixel electrode to the edge.

26. The display panel according to claim 1, characterized in that, At least part of the ink section includes multiple ink materials of different colors stacked together.

27. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 26.

28. A method for manufacturing a display panel, characterized in that, include: A connection functional layer is formed on one side of the first substrate; The connection functional layer is etched to form a plurality of spaced-apart opening structures and a connection portion located between adjacent opening structures; Multiple ink portions are formed within the multiple opening structures, and the multiple ink portions include a first ink portion and a second ink portion with different colors; A plurality of pixel electrodes are formed on the side of the connection portion away from the first substrate. The pixel electrodes include a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion. The orthographic projection of the first ink portion on the first substrate is at least partially located between the orthographic projections of the two first electrodes on the first substrate, and the orthographic projection of the second ink portion on the first substrate is at least partially located between the orthographic projections of the two second electrodes on the first substrate. An electrophoretic layer is formed on the side of the pixel electrode opposite to the first substrate, and the electrophoretic layer includes electrophoretic particles.

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