Display panel, display device and preparation method of display panel

Abstract

The invention provides a display panel, a display device and a preparation method of the display panel, the display panel comprises a first substrate, a color ink layer, a plurality of pixel electrodes and an electrophoresis layer, the color ink layer is arranged on one side of the first substrate, the color ink layer comprises a plurality of ink parts, the plurality of ink portions include first ink portions and second ink portions of different colors. The plurality of pixel electrodes are arranged on one side of the first substrate, and the pixel electrodes comprise first electrodes corresponding to the first ink parts and second electrodes corresponding to the second ink parts. The electrophoresis layer is arranged on the side, away from the first substrate, of the color ink layer and the pixel electrodes, the electrophoresis layer comprises electrophoresis particles, and at least part of the orthographic projection of the first ink part on the first substrate is located between the orthographic projections of the two first electrodes on the first substrate. The orthographic projection of the second ink part on the first substrate is at least partially located between the orthographic projections of the two second electrodes on the first substrate.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] With the development of science and technology, display devices have also developed, and the types of display devices have become increasingly rich. Existing display devices include liquid crystal display devices, organic electroluminescent display devices, and electrophoretic display devices, etc. Among them, electrophoretic display devices have become an increasingly important display device due to their advantages such as low energy consumption, high reflectivity, and high contrast. Summary of the invention

[0003] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, which can improve the color display effect.

[0004] In a first aspect, an embodiment of the present application provides a display panel, the display panel comprising a first substrate, a color ink layer, a plurality of pixel electrodes and an electrophoretic layer, the color ink layer being disposed on one side of the first substrate, the color ink layer comprising a plurality of ink portions, the plurality of ink portions comprising a first ink portion and a second ink portion of different colors. A plurality of pixel electrodes are disposed on one side of the first substrate, the pixel electrodes comprising a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion.

[0005] The electrophoretic layer is arranged on the side of the color ink layer and the pixel electrode 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 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.

[0006] In a second aspect, an embodiment of the present application provides a display device, which includes a display panel in any of the aforementioned embodiments.

[0007] In a third aspect, an embodiment of the present application provides a method for preparing a display panel, comprising:

[0008] forming a connection function layer on one side of the first substrate;

[0009] Etching the connection function layer to form a plurality of opening structures arranged at intervals and a connection portion between adjacent opening structures;

[0010] forming a plurality of ink portions in the plurality of opening structures, the plurality of ink portions including a first ink portion and a second ink portion having different colors;

[0011] A plurality of pixel electrodes are formed on a side of the connecting portion facing away from the first substrate, the pixel electrodes comprising a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion, an 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 an 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 a side of the pixel electrode away from the first substrate, and the electrophoretic layer includes electrophoretic particles.

[0013] The embodiment of the present application provides a display panel, a display device and a method for preparing a display panel, wherein the electrophoretic layer includes only one type of electrophoretic particles, and this type of electrophoretic particles can shield the ambient light. The first electrode and the second electrode are respectively arranged corresponding to the first ink portion and the second ink portion, and independently control the distribution of the electrophoretic particles at the corresponding positions of the first ink portion and the second ink portion. On this basis, the display panel can selectively control whether the electrophoretic particles cover the area where the first ink portion is located through the first electrode, thereby adjusting the amount of ambient light propagating to the first ink portion, and realizing the display control of the specific color corresponding to the first ink portion. And the second electrode can selectively control whether the electrophoretic particles cover the area where the second ink portion is located, thereby adjusting the amount of ambient light propagating to the second ink portion, and realizing the display control of the specific color corresponding to the second ink portion. In this case, the display panel can realize the display needs of the color picture under the cooperation of the color ink layer, the electrophoretic layer and the pixel electrode.

[0014] In addition, during the display process, the ambient light will first pass through the electrophoretic layer to the color ink layer, and then leave the display panel through reflection from the color ink layer. In this process, the ambient light will only undergo one reflection process, without multiple reflections or light filtering, which helps to improve the brightness of the light and the display effect. At the same time, since only one type of electrophoretic particles can be set in the electrophoretic layer, the risk of mutual influence and interference between different electrophoretic particles is low, which helps to improve the response rate of the display panel, thereby also improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 is a schematic diagram of a cross-sectional structure of a display panel in a first color state provided by an embodiment of the present application;

[0017] Figure 2is a schematic diagram of a cross-sectional structure of a display panel in a second color state provided by an embodiment of the present application;

[0018] Figure 3 is a schematic diagram of a cross-sectional structure of a display panel in other color states provided by an embodiment of the present application;

[0019] Figure 4 is a schematic diagram of a cross-sectional structure of a display panel in a black state provided by an embodiment of the present application;

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

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

[0022] Figure 7 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0023] Figure 8 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0024] Fig. 9 This is a schematic diagram of the positional relationship between a support column, a pixel electrode and an ink portion in another display panel provided in an embodiment of the present application;

[0025] Fig.10 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0026] Fig.11 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0027] Fig.12 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0028] Fig.13 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0029] Fig.14 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0030] Fig.15 This is a schematic diagram of the positional relationship between a pixel electrode and an ink portion in another display panel provided in an embodiment of the present application;

[0031] Fig.16 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0032] Fig.17 yes Fig.16 Schematic diagram of the enlarged structure at the middle area Q;

[0033] Fig.18 yes Fig.16 Schematic diagram of the enlarged structure at the middle region V;

[0034] Fig.19 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0035] Fig. 20 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0036] Fig.21 yes Fig. 20 Schematic diagram of the enlarged structure at the middle area P;

[0037] Fig. 22 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0038] Fig.23 yes Fig. 22 Schematic diagram of the enlarged structure at the middle area N;

[0039] Fig.24 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0040] Fig.25 is a schematic diagram of a partial cross-sectional structure of another display panel provided in an embodiment of the present application;

[0041] Fig.26 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0042] Fig. 27 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0043] Fig.28 is a flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0044] Figures 29a to 29e It is a process structure diagram of a method for preparing a display panel provided in an embodiment of the present application.

[0045] Marking Description:

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

[0047] 10. a first substrate;

[0048] 20, color ink layer; 21, ink part; 211, second protrusion; 212, first arc surface; 213, second body part; 214, cutting plane; 22, first ink part; 23, second ink part; 24, first type ink part; 25, second type ink part; 26, connection part; 27, third ink part;

[0049] 30. pixel electrode; 31. first electrode; 32. second electrode; 33. first type electrode; 34. second type electrode; 35. first protrusion; 351. first side wall; 352. first bottom wall; 36. first body;

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

[0051] 50. common electrode; 51. electrode portion; 52. first surface; 53. second arc surface;

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

[0053] 70; connecting functional layer; 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 DESCRIPTION

[0056] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] Electrophoretic display panels use electrophoretic particles of specific colors and electrical properties to move in a liquid environment through an external electric field to present different color display effects. In related technologies, electrophoretic display panels can achieve color display effects through the coordination of black and white electrophoretic particles and a color film layer, or through the coordination of multiple electrophoretic particles of different colors.

[0059] The inventors have found that, for the solution of the color filter layer, the color filter layer is located above the black and white electrophoretic particles, and the ambient light needs to first pass through the color filter layer to reach the location of the electrophoretic particles, and then be totally reflected at the white electrophoretic particles, and finally be emitted from the color filter layer to the user's eyes, thereby achieving the display effect. Under this design, the ambient light needs to pass through the color filter layer twice, and because the color filter layer itself has a low transmittance, the display effect of the electrophoretic display panel is poor.

[0060] As for the solution of multiple electrophoretic particles of different colors, the corresponding driving method of the multi-color electrophoretic particles when displaying color images is complex, and electrophoretic particles of different colors are prone to interfere with each other, resulting in slow response speed and long response time of the electrophoretic display panel, which is also prone to poor display effects.

[0061] Regarding the above issues, please refer to Figure 1 The embodiment of the present 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 the color ink layer 20 includes a plurality of ink portions 21, and the plurality of ink portions 21 include 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 the pixel electrodes 30 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] The electrophoretic layer 40 is arranged on the side of the color ink layer 20 and the pixel electrode 30 away from the first substrate 10, and the electrophoretic layer 40 includes electrophoretic particles 41. The orthographic projection of the first ink portion 22 on the first substrate 10 is at least partially located between the orthographic projections of the two first electrodes 31 on the first substrate 10, and the orthographic projection of the second ink portion 23 on the first substrate 10 is at least partially located between the orthographic projections of the two second electrodes 32 on the first substrate 10.

[0063] The first substrate 10 can be used as a carrier to support a part of the film layer structure in the display panel 100. The first substrate 10 may include a glass substrate, that is, the display panel 100 is a rigid structure; or the first substrate 10 may include a flexible substrate, that is, the display panel 100 may be a flexible structure to meet the bending requirements of the display panel 100. The embodiments of the present application are not limited to this.

[0064] The electrophoretic layer 40 is disposed on one side of the first substrate 10, and the electrophoretic layer 40 includes a plurality of electrophoretic particles 41. In the related art, the electrophoretic display panel 100 includes electrophoretic particles of at least two colors, and the switching of the screen of the display panel 100 is achieved by changing the positional relationship between the electrophoretic particles 41 of different colors. However, in the embodiment of the present application, the electrophoretic particles 41 are not components for achieving the display effect, and they only have the effect of shielding light. In other words, the display panel 100 includes only one type of electrophoretic particles 41, and the electrophoretic particles 41 include black light-shielding material.

[0065] It should be noted that the electrical property mentioned here refers to the positive or negative charge carried by the electrophoretic particles 41. The electrophoretic particles 41 may all be positive particles, or may all be negative particles. For different electrophoretic particles 41, although each electrophoretic particle 41 includes a black light-shielding material and has the same electrical property, different electrophoretic particles 41 may have the same shape and size, or may have different shapes and sizes, and different electrophoretic particles 41 may have the same charge, or may have different charges, and the embodiments of the present application do not limit this.

[0066] The color ink layer 20 and the electrophoretic layer 40 are disposed on the same side of the first substrate 10. The color ink layer 20 is a main component for realizing color display of the display panel 100. The color ink layer 20 includes a plurality of ink portions 21. The ink portions 21 include ink materials. Ambient light propagating to the ink portions 21 can be reflected by the ink portions 21 and emitted from the display panel 100. Figure 1 In FIG. 1 , the propagation process of the ambient light in the display panel 100 is indicated by the dotted lines.

[0067] Since different ink portions 21 have different colors, the ambient light can be reflected and converted into light of different colors by the different ink portions 21. For example, if the color ink layer 20 includes a green ink portion 21, the ambient light propagating to the green ink portion 21 can be reflected and converted into green light, and then emitted from the display panel 100. If the color ink layer 20 includes a red ink portion 21, the ambient light propagating to the red ink portion 21 can be reflected and converted into red light, and then emitted from 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 embodiment of the present application does not limit the color types of the first ink section 22 and the second ink section 23, as long as the first ink section 22 and the second ink section 23 are both colored and the colors of the two are different from each other. Optionally, the first ink section 22 and the second ink section 23 include one of a red ink section 21, a green ink section 21, and a blue ink section 21, respectively.

[0069] According to different 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 may include ink sections 21 of other colors, which is not limited in the embodiment of the present application.

[0070] In addition to the above-mentioned film layer structure, the display panel 100 also includes a plurality of pixel electrodes 30, which are device structures for controlling the positions of the electrophoretic particles 41. The pixel electrodes 30 include 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" mentioned here means that the first electrode 31 can control part 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 area that overlaps with the orthographic projection of the first ink portion 22 on the first substrate 10, and the first electrode 31 can control the distribution state of the electrophoretic particles 41 located in the first area. The "second electrode 32 corresponding to the second ink portion 23" is the same, and the embodiments of the present application will not be repeated.

[0071] A single first ink portion 22 may be provided with a plurality of first electrodes 31, and the plurality of first electrodes 31 are correspondingly located at different positions around the first ink portion 22. According to different actual needs, the orthographic projection of the first electrode 31 on the first substrate 10 may overlap with the orthographic projection of the first ink portion 22 on the first substrate 10, or the orthographic projection of the first electrode 31 on the first substrate 10 may be completely located outside the orthographic projection of the first ink portion 22 on the first substrate 10, as long as the orthographic projection of the first ink portion 22 on the first substrate 10 is at least partially located between the orthographic projections of the two first electrodes 31 on the first substrate 10. The two first electrodes 31 mentioned here refer to two first electrodes 31 adjacent to each other in a single direction, and the orthographic projections of the first ink portion 22 and the two first electrodes 31 on the first substrate 10 may overlap or may not overlap.

[0072] A single first ink section 22 may be provided with only two first electrodes 31, or may be provided with more first electrodes 31, and the multiple first electrodes 31 in the single first ink section 22 may be driven and controlled together by the same signal. On this basis, the different first electrodes 31 corresponding to the single first ink section 22 may be connected to each other and provided as a whole, so that only one signal line connected to the first electrode 31 is required to meet the driving needs of the multiple first electrodes 31 corresponding to the single first ink section 22. Of course, in other embodiments, all the first electrodes 31 corresponding to the single first ink section 22 may also be spaced apart from each other, in which case multiple signal lines are required to be connected to different first electrodes 31 respectively, and the multiple signal lines may be used to transmit the same signal voltage.

[0073] In addition, the first electrode 31 may have a variety of sizes and shapes, for example, its orthographic projection on the first substrate 10 may include a straight line structure, or may include an arc-shaped structure, etc. 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 orthographic projection of the first ink portion 22 on the first substrate 10 is a polygonal structure such as a triangle and a square, the first electrode 31 may include a straight line structure and be arranged corresponding to one side of the polygon; if the orthographic projection of the first ink portion 22 on the first substrate 10 is a circle, the first electrode 31 may include an arc-shaped structure.

[0074] The relationship between the second ink portion 23 and the second electrode 32 is similar to the relationship between the first ink portion 22 and the first electrode 31, and the embodiments of the present application will not be repeated. However, for the first electrode 31 and the second electrode 32, in order to meet the driving needs of the 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 can also 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 portion 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 portion 23 without being affected by the internal signal voltage of the first electrode 31, so as to meet the independent display driving needs of different color pictures.

[0075] In the embodiment of the present application, the electrophoretic layer 40 includes only one type of electrophoretic particles 41, and this type of electrophoretic particles 41 can shield the ambient light. The first electrode 31 and the second electrode 32 are respectively arranged corresponding to the first ink portion 22 and the second ink portion 23, and independently control the distribution of the electrophoretic particles 41 at the corresponding positions of the first ink portion 22 and the second ink portion 23. On this basis, the display panel 100 can selectively control whether the electrophoretic particles 41 cover the area where the first ink portion 22 is located through the first electrode 31, thereby adjusting the amount of ambient light propagating to the first ink portion 22, and realizing the display control of the specific color corresponding to the first ink portion 22. And the second electrode 32 can selectively control whether the electrophoretic particles 41 cover the area where the second ink portion 23 is located, thereby adjusting the amount of ambient light propagating to the second ink portion 23, and realizing the display control of the specific color corresponding to the second ink portion 23. In this case, the display panel 100 can realize the display needs of the color picture under the cooperation of the color ink layer 20, the electrophoretic layer 40 and the pixel electrode 30.

[0076] In addition, during the display process, the ambient light first passes through the electrophoretic layer 40 to reach the color ink layer 20, and then leaves the display panel 100 through the reflection of the color ink layer 20. In this process, the ambient light only undergoes one reflection process, and does not need to undergo multiple reflections or filtering processes, which helps to improve the brightness of the light and the display effect. At the same time, since only one type of electrophoretic particles 41 can be provided in the electrophoretic layer 40, the risk of mutual influence and interference between different electrophoretic particles 41 is low, which 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 structure, the display panel 100 also includes other devices and film structures, and the embodiment of the present application does not limit the specific composition of the display panel 100. In some optional embodiments, the display panel 100 also includes a common electrode 50 disposed on the side of the electrophoretic layer 40 away from the first substrate 10, and the orthographic projections of the first electrode 31 and the second electrode 32 on the first substrate 10 are located within the orthographic projection of the common electrode 50 on the first substrate 10.

[0078] The common electrode 50 may be a planar structure, and its orthographic projection on the first substrate 10 may cover the orthographic projections of a plurality of pixel electrodes 30 including the first electrode 31 and the second electrode 32 on the first substrate 10. The pixel electrode 30 and the common electrode 50 are arranged at intervals in the thickness direction Z of the display panel 100, and an electric field structure can be defined between the two to control the distribution state of the electrophoretic particles 41. On this basis, since the first electrode 31 is arranged 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 the electrophoretic particles 41 above the first ink portion 22, and can selectively control the electrophoretic particles 41 to cover or not cover the first ink portion 22 according to different situations. Similarly, since the second electrode 32 is arranged 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 the electrophoretic particles 41 above the second ink portion 23, and can selectively control the electrophoretic particles 41 to cover or not cover the second ink portion 23 according to different situations.

[0079] In some embodiments, see Figure 1 and Figure 2 , the electrophoretic particles 41 are positively charged, and 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, 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, V5>V4>V6.

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

[0081] like Figure 1As shown, in the first color state, in order to meet the display requirements, the electrophoretic particles 41 need not cover the first ink portion 22, and cover the second ink portion 23, so that the ambient light can propagate to the first ink portion 22 and be reflected by the first ink portion 22, but cannot propagate to the second ink portion 23 and be reflected by the second ink portion 23. In view of this, the embodiment of the present application sets the voltage V2 of the first electrode 31 in the first color state to be less than the voltage V1 of the common electrode 50, so that in the electric field structure formed by the first electrode 31 and the common electrode 50, the positive electrophoretic particles 41 can be repelled by the common electrode 50, and attracted by the first electrode 31 and gathered at the position of the first electrode 31, so that at least part of the structure in the first ink portion 22 can not be blocked by the electrophoretic particles 41, so that the ambient light can propagate to the first ink portion 22, and be reflected by the first ink portion 22 to become a light of a specific color, and finally emitted from the display panel 100.

[0082] In addition, the embodiment of the present application further sets the voltage V3 of the second electrode 32 in the first color state to be greater than the voltage V1 of the common electrode 50, so that in the electric field structure formed by the second electrode 32 and the common electrode 50, the positive 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, so that the electrophoretic particles 41 gathered at the common electrode 50 can cover and block most of the area in the second ink portion 23, so that most of the ambient light cannot propagate to the second ink portion 23, and even if part of the ambient light propagates to the second ink portion 23 through the electrophoretic particles 41, due to the blocking of the electrophoretic particles 41, the light reflected from the second ink portion 23 is difficult to leave the display panel 100.

[0083] It should be noted that the specific values ​​of V1, V2 and V3 are not limited in the embodiment of the present application. V1, V2 and V3 can be positive, negative or 0, as long as V3>V1>V2 is satisfied. In addition, according to different actual needs, the electrophoretic particles 41 can also be negatively charged. At this time, in order to meet the display needs of the first color state, V1, V2 and V3 need to satisfy: V2>V1>V3.

[0084] like Figure 2As shown, in the second color state, in order to meet the display requirements, the electrophoretic particles 41 need to cover the first ink portion 22, and not cover the second ink portion 23, so that the ambient light can propagate to the second ink portion 23 and be reflected by the second ink portion 23, but cannot propagate to the first ink portion 22 and be reflected by the first ink portion 22. In view of this, the embodiment of the present application sets the voltage V6 of the second electrode 32 in the second color state to be less than the voltage V4 of the common electrode 50, so that in the electric field structure formed by the second electrode 32 and the common electrode 50, the positive electrophoretic particles 41 can be repelled by the common electrode 50, and attracted by the second electrode 32 and gathered at the position of the second electrode 32, so that at least part of the structure in the second ink portion 23 can not be blocked by the electrophoretic particles 41, so that the ambient light can propagate to the second ink portion 23, and be reflected by the second ink portion 23 to become a light of a specific color, and finally emit out of the display panel 100.

[0085] In addition, the embodiment of the present application further sets the voltage V5 of the first electrode 31 in the second color state to be greater than the voltage V4 of the common electrode 50, so that in the electric field structure formed by the first electrode 31 and the common electrode 50, the positive 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, so that the electrophoretic particles 41 gathered at the common electrode 50 can cover and block most of the area in the first ink portion 22, so that most of the ambient light cannot propagate to the first ink portion 22, and even if part of the ambient light propagates to the first ink portion 22 through the electrophoretic particles 41, due to the blocking of the electrophoretic particles 41, the light reflected from the first ink portion 22 is difficult to leave the display panel 100.

[0086] It should be noted that the specific values ​​of V4, V5 and V6 are not limited in the embodiment of the present application. V4, V5 and V6 can be positive, negative or 0, as long as V5>V4>V6 is satisfied. In addition, according to different actual needs, the electrophoretic particles 41 can also be negatively charged. At this time, in order to meet the display needs of the first color state, V4, V5 and V6 need to satisfy: V6>V4>V5.

[0087] In addition, for 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, V1 can be set equal to V4 according to different actual needs, or V1 can also be set 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 can be left unchanged, and only the voltage in different pixel electrodes 30 can be changed to switch the display color, thereby reducing the control difficulty and helping to improve the screen switching efficiency.

[0088] As for 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, the two can remain the same, or the two can be different. Similarly, as for 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, the two can remain the same, or the two can be different, and the embodiment of the present application does not limit this. Optionally, V2=V6, V3=V5.

[0089] Further optionally, V1=V4=0, V2=V6<0, V3=V5>0, so that in the first color state and the second color state, the common electrode 50 has no signal voltage, which helps to reduce the display power consumption of the display panel 100. Exemplarily, V2=V6=-15V, V3=V5=15V.

[0090] In the embodiment of the present application, for the display states of two different colors, the first color state and the second color state, the voltage of the first electrode 31 and the voltage of the second electrode 32 remain different in the two states, and there will be different relationships between the voltage values ​​of the first electrode 31 and the common electrode 50, so that the first ink portion 22 in the first color state will not be blocked or covered by the electrophoretic particles 41, and the first ink portion 22 in the second color state will be blocked or covered by the electrophoretic particles 41. There will also be different relationships between the voltage values ​​of the second electrode 32 and the common electrode 50, so that the second ink portion 23 in the first color state will be blocked or covered by the electrophoretic particles 41, and the second ink portion 23 in the second color state will not be blocked or covered by the electrophoretic particles 41. On this basis, by adjusting the different voltage value relationships between the first electrode 31 and the second electrode 32 relative to the common electrode 50, the display panel 100 can be switched between different color states, thereby meeting the needs of color display, and having strong flexibility.

[0091] Please note that Figure 3 In the actual use of the display panel 100, the display panel 100 often needs to display non-single-color picture information. At this time, for different first ink portions 22, the voltage value relationship between the first electrode 31 and the common electrode 50 corresponding to different first ink portions 22 will also be different, that is, the voltage value of the first electrode 31 at some positions needs to be smaller than the voltage value of the common electrode 50, so that the first ink portion 22 at some positions is not covered and blocked by the electrophoretic particles 41, and the voltage value of the first electrode 31 at other positions needs to be larger than the voltage value of the common electrode 50, so that the first ink portion 22 at some positions will be covered and blocked by the electrophoretic particles 41. The same is true for different second ink portions 23, and the embodiments of the present application will not be repeated.

[0092] In some embodiments, see Figure 4, the display panel 100 also has a black state, in which the voltage of the common electrode 50 is V7, V7<0. Exemplarily, V7=-15V.

[0093] The “black state” mentioned here refers to the state when the display panel 100 displays a black screen. In the black state, both the first ink portion 22 and the second ink portion 23 need to be shielded by the electrophoretic particles 41. At this time, the voltage V7 of the common electrode 50 needs to be less than the voltages of the first electrode 31 and the second electrode 32 at the same time, so that the electrophoretic particles 41 can be repelled by the first electrode 31 and the second electrode 32 and gather at the common electrode 50, thereby achieving the shielding effect on the first ink portion 22 and the second ink portion 23.

[0094] On this basis, the embodiment of the present application sets the voltage V7 of the common electrode 50 in the black state to be less than 0, so that the common electrode 50 itself has the ability to attract the positively charged electrophoretic particles 41, thereby improving the aggregation ability of the electrophoretic particles 41 at the common electrode 50, and improving the shielding effect of the electrophoretic particles 41 on the first ink portion 22 and the second ink portion 23.

[0095] Further optionally, on this basis, the voltage of 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, so as to reduce the display power consumption of the display panel 100. Of course, in other embodiments, the voltage of the first electrode 31 and the second electrode 32 in the black state may not be 0, but a positive value or a negative value, as long as both voltages are greater than the voltage V7 of the common electrode 50.

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

[0097] The "surrounding the first ink section 22" mentioned here means that the multiple first electrodes 31 corresponding to a single first ink section 22 are arranged at different positions around the first ink section 22, so that the first ink section 22 is provided with first electrodes 31 at different positions around the first ink section 22. The multiple first electrodes 31 corresponding to a single first ink section 22 can be connected to each other, or can be spaced apart from each other. The relative relationship between the second electrode 32 and the second ink section 23 is the same, and the embodiment of the present application will not be repeated.

[0098] In the embodiment of the present application, the multiple first electrodes 31 corresponding to a single first ink portion 22 do not correspond to only a single position on the circumferential side of the first ink portion 22, but are arranged at different circumferential positions of the first ink portion 22 along different directions. In this way, the drive control of the electrophoretic particles 41 set corresponding to the first ink portion 22 can be achieved from multiple angles, thereby improving the control accuracy of the electrophoretic particles 41 and helping to improve the response rate.

[0099] In addition, in the embodiment of the present application, the first electrode 31 and the second electrode 32 are not connected as a whole, but are spaced apart from each other, so that the first electrode 31 and the second electrode 32 can be insulated from each other and independently driven by different signal voltages, thereby achieving independent control of the distribution of the electrophoretic particles 41 relative to the first ink portion 22 and the second ink portion 23, thereby meeting the colorful display needs of the display panel 100.

[0100] In some embodiments, see 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, according to different actual needs, some of the first electrodes 31 corresponding to a single first ink section 22 may be connected to each other, while other parts of the first electrodes 31 may be spaced apart from each other, or all of the first electrodes 31 corresponding to a single first ink section 22 may be connected to each other. Optionally, all of the first electrodes 31 corresponding to a single first ink section 22 are connected to each other to form an integrated structure, which helps to reduce the difficulty of preparing the first electrode 31.

[0102] In combination with the above content, it can be known that the shape and size of the first electrode 31 can correspond to the shape and size of the first ink section 22. On this basis, 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 section 22. Exemplarily, if the orthographic projection of the first ink section 22 on the first substrate 10 is a rectangular structure, the orthographic projection of the electrode structure formed by connecting multiple first electrodes 31 on the first substrate 10 can be a square ring structure, which is arranged around the circumference of the rectangular structure, and there may be an overlap or non-overlap between the two; if the orthographic projection of the first ink section 22 on the first substrate 10 is a circular structure, the orthographic projection of the electrode structure formed by connecting multiple first electrodes 31 on the first substrate 10 can be a circular ring structure, which is arranged around the circumference of the circular structure, and there may be an overlap or non-overlap between the two.

[0103] In the embodiment of the present application, the plurality of first electrodes 31 corresponding to a single first ink portion 22 can be connected to each other, which helps to reduce the difficulty of preparing the first electrode 31. At the same time, under this design, only one signal line needs to be connected to the first electrode 31 to meet the signal voltage requirements of the plurality of first electrodes 31, thereby helping to reduce the number of signal lines connected to the first electrode 31 and reducing the layout pressure of the signal lines in the display panel 100. In addition, the relationship between the second ink portion 23 and the second electrode 32 is similar to this, and the embodiment of the present application does not limit it.

[0104] In some embodiments, see Figure 7 The display panel 100 further includes a support column 60 disposed in the electrophoretic layer 40, and the support column 60 is disposed between the orthographic projections of adjacent ink portions 21 on the first substrate 10. Among them, the support column 60 is not disposed between some adjacent ink portions 21.

[0105] The support column 60 is a component in the display panel 100 for supporting the display panel 100. The support column 60 is arranged in the electrophoretic layer 40, that is, the support column 60 can be arranged in the same layer as the electrophoretic particle 41. The existence of the support column 60 can reduce the deformation degree of the electrophoretic layer 40, reduce the risk of the electrophoretic particle 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 if Figure 7 As shown, the support column 60 provided in the embodiment of the present application can be applied to the electrophoretic display panel 100 with a cofferdam structure. In this case, a plurality of support columns 60 can define a plurality of different regions that are independent of each other, and the electrophoretic particles 41 located in a single region cannot move to other adjacent regions due to being blocked by the support columns 60. Figure 8 As shown, the support structure provided in the embodiment of the present application can also be applied to an electrophoretic display panel 100 having a microcup structure. In this case, the display panel 100 also includes a support layer 61, and two adjacent support columns 60 are connected to the support layer 61 and include the same material. In this way, the two adjacent support columns 60 and the support layer 61 can together 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 the electrophoretic particles 41, thereby improving the operating reliability of the display panel 100.

[0107] In addition, the embodiments of the present application do not limit the specific positional relationship of the support column 60 relative to the ink portion 21 and the pixel electrode 30. The support column 60 can be arranged to be laminated with the surface of the pixel electrode 30 facing away from the first substrate 10, or the support column 60 can be arranged to be laminated with the surface of the ink portion 21 facing away from the first substrate 10, or the support column 60 can be arranged on the same layer as at least one of the ink portion 21 and the pixel electrode 30.

[0108] As can be seen from the above content, a single first ink section 22 will be provided with a plurality of first electrodes 31 for controlling the positional relationship of the electrophoretic particles 41 relative to the first ink section 22, and a single second ink section 23 will be provided with a plurality of second electrodes 32 for controlling the positional relationship of the electrophoretic particles 41 relative to the second ink section 23. On this basis, considering that the number of pixel electrodes 30 corresponding to a single ink section 21 is usually multiple, the electric field structure formed by the pixel electrode 30 and the common electrode 50 can adjust and control the distribution state of the electrophoretic particles 41 to a large extent. In view of this, it can be selected that no support column 60 is provided between some adjacent ink sections 21, thereby reducing the orthographic projection size of the plurality of support columns 60 on the first substrate 10.

[0109] Further, in the embodiment of the present application, the presence of the support column 60 can support the electrophoretic layer 40, and can reduce the risk of excessive movement of the electrophoretic particles 41, thereby improving the reliability of the display panel 100. At the same time, since the support column 60 is not provided between some adjacent ink portions 21, it can help reduce the orthographic projection size of the plurality of support columns 60 on the first substrate 10, and reduce the occupation of the support column 60 in the space where the ink portion 21 or the pixel electrode 30 is located, thereby helping to improve the resolution of the display panel 100, or improve the control effect of the pixel electrode 30 on the electrophoretic particles 41, and improve the response rate of the electrophoretic particles 41.

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

[0111] The repeating unit C is the minimum repeating unit composed of a plurality of adjacent ink sections 21. The plurality of repeating units C are arranged in an array. For example, the plurality of repeating units C are arranged in an array along the first direction X and the 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. The repeating unit C includes at least a first ink section 22 and a second ink section 23. A single repeating unit C may include only one first ink section 22 or may include multiple first ink sections 22. Similarly, a single repeating unit C may include only one second ink section 23 or may include multiple second ink sections 23. A single repeating unit C may include only two types of ink sections 21, namely, the first ink section 22 and the second ink section 23, or may include ink sections 21 of other colors. The embodiment of the present application does not limit this.

[0112] In the embodiment of the present application, 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 set in the area between adjacent repeating units C. This helps to improve the rationality of the layout between the support column 60 and the ink portion 21, and 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 effects of the support column 60 on light, and improving the display effect.

[0113] In some optional embodiments, the orthographic projections of multiple support columns 60 on the first substrate 10 surround the orthographic projection of a single repeating unit C on the first substrate 10, so that the presence of the support columns 60 can reduce the risk of cross-regional movement of electrophoretic particles 41 in areas where different repeating units C are located, thereby improving the display reliability of the display panel 100.

[0114] In some embodiments, see Fig.10 The multiple ink portions 21 include a first type of ink portion 24 and a second type of ink portion 25, the multiple 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 orthographic projection of the first type of ink portion 24 on the first substrate 10 is located between the orthographic projections of the adjacent first type of electrodes 33 on the first substrate 10, and the orthographic projection of the second type of ink portion 25 on the first substrate 10 is located between the orthographic projections of the two second type of electrodes 34 on the first substrate 10.

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

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

[0117] On this basis, the second type of ink section 25 is the other ink sections 21 in the plurality of ink sections 21 except the first type of ink section 24. It should be noted that, unlike the first ink section 22 and the second ink section 23, different first ink sections 22 all correspond to ink sections 21 of the same color, and different first type of ink sections 24 may correspond to ink sections 21 of the same color, or may also include ink sections 21 of different colors. Similarly, different second type of ink sections 25 may correspond to ink sections 21 of the same color, or may also include ink sections 21 of different colors.

[0118] A single first-type ink portion 24 may be provided with a plurality of first-type electrodes 33, and the plurality of first-type electrodes 33 may be located at different positions around the first-type ink portion 24. According to different actual needs, the orthographic projection of the first-type electrode 33 on the first substrate 10 may overlap with the orthographic projection of the first-type ink portion 24 on the first substrate 10, or the orthographic projection of the first-type electrode 33 on the first substrate 10 may be completely located outside the orthographic projection of the first-type ink portion 24 on the first substrate 10, as long as the orthographic projection of the first-type ink portion 24 on the first substrate 10 is at least partially located between the orthographic projections of the two first-type electrodes 33 on the first substrate 10. The two first-type electrodes 33 mentioned here refer to two first electrodes 31 adjacent in a single direction, and the orthographic projections of the first-type ink portion 24 and the two first-type electrodes 33 on the first substrate 10 may overlap or may not overlap. In addition, the relationship between the second-type ink portion 25 and the second-type electrode 34 is similar to that of the first-type ink portion 25, and the embodiments of the present application will not be repeated.

[0119] Furthermore, since the support column 60 is relatively close to the first type ink portion 24, the support column 60 can be arranged correspondingly on the side of the first type electrode 33 away from the first substrate 10, that is, the orthographic projection of the support column 60 on the first substrate 10 will overlap with the orthographic projection of the first type electrode 33 on the first substrate 10. Since the support column 60 is relatively close to the second type ink portion 25, the orthographic projection of the second type electrode 34 on the first substrate 10 does not overlap with the orthographic projection of the support column 60 on the first substrate 10, that is, the orthographic projection of the second type electrode 34 on the first substrate 10 is located outside the orthographic projection of the support column 60 on the first substrate 10.

[0120] On this basis, considering that the support column 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 the electrophoretic particles 41 in part of the area away from the surface of the first substrate 10, and then when the first type of electrode 33 adsorbs the electrophoretic particles 41, it is easy for some electrophoretic particles 41 to float above the first type of ink portion 24.

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

[0122] In some embodiments, see Fig.11 and Fig.12 , the multiple ink portions 21 include a first type of ink portion 24 and a second type of ink portion 25, the multiple 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 orthographic projection of the first type of ink portion 24 on the first substrate 10 is located between the orthographic projections of each first type of electrode 33 on the first substrate 10, and the orthographic projection of the second type of ink portion 25 on the first substrate 10 is located between the orthographic projections of two second type of electrodes 34 on the first substrate 10.

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

[0124] In some optional embodiments, the thickness of the first type ink portion 24 is greater than the thickness of the second type ink portion 25 , and the orthographic projection area of ​​the first type ink portion 24 on the first substrate 10 is greater than the orthographic projection area of ​​the second type 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, wherein the sizes of different regions in 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 the same, and the present embodiment does not limit this.

[0126] For the ink portion 21 itself, the reflection brightness corresponding to the ink portion 21 is positively correlated with its thickness, and the reflection brightness corresponding to the ink portion 21 is also positively correlated with its orthographic projection area. On this basis, under the premise of the same amount of light irradiation, the first type of ink portion 24 can have a greater reflection brightness than the second type of ink portion 25.

[0127] For the case where the support column 60 is located on the side of the first type of electrode 33 facing away from the first substrate 10, the support column 60 will not only affect the ability of the first type of electrode 33 to adsorb the electrophoretic particles 41, but also affect the display effect of the display panel 100 at the first type of ink portion 24. Specifically, when the first type of electrode 33 adsorbs the electrophoretic particles 41, the ambient light can propagate to the first type of ink portion 24 and reflect and transform into light of a specific color. Since the support column 60 is close to the first type of ink portion 24 and the light transmittance of the support column 60 itself is low, the partially obliquely emitted reflected light formed by the first type of ink portion 24 will propagate to the support column 60 and be absorbed, thereby causing the brightness of the display panel 100 corresponding to the first type of ink portion 24 to decrease at a large viewing angle, thereby causing the problem of uneven display at a large viewing angle.

[0128] In view of this, the embodiment of the present application makes a differentiated design for the size of the first type ink portion 24 and the second type ink portion 25, so that the orthographic projection area of ​​the first type ink portion 24 on the first substrate 10 is larger than the orthographic projection area of ​​the second type ink portion 25 on the first substrate 10, or the thickness of the first type ink portion 24 is larger than the thickness of the second type ink portion 25. Regardless of which solution is used, the first type ink portion 24 can have a stronger light reflection effect than the second type ink portion 25, thereby increasing the brightness of the display panel 100 at the first type ink portion 24 at a large viewing angle, reducing the risk of uneven display at a large viewing angle caused by the support column 60, and improving the display reliability of the display panel 100.

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

[0130] In combination with the above content, it can be known that the existence of the support column 60 mainly affects the wide viewing angle light of the display panel 100 at the first type of ink portion 24, thereby causing the problem of uneven display under wide viewing angle conditions. On this basis, considering that the human eye is more sensitive to green light, and most of the use scenarios of the display panel 100 are front-view observation scenarios, the embodiment of the present application is to further enhance the brightness of the green light emitted by the display panel 100 in the front-view observation scenario by setting the first type of ink portion 24 to include the green ink portion 21, thereby improving the display perception of the display panel 100 in the front-view observation scenario.

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

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

[0133] In the embodiment of the present application, green, red and blue together constitute the three primary colors, which are the three basic colors that cannot be decomposed further. Considering that the human eye is more sensitive to green, it is selected to set the first ink portion 22 to include the green ink portion 21, and the second ink portion 23 to include the red ink portion 21 or the blue ink portion 21. By means of the mutual combination of the corresponding reflected light from the first ink portion 22 and the second ink portion 23, the display panel 100 produces other different colors accordingly, thereby satisfying the colorful display effect of the display panel 100.

[0134] In some embodiments, see Fig.13 and Fig.14 , the thickness of the first ink portion 22 is greater than the thickness of the second ink portion 23 ; and / or, the orthographic projection area of ​​the first ink portion 22 on the first substrate 10 is greater than the orthographic projection area of ​​the second ink portion 23 on the first substrate 10 .

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

[0136] For the ink portion 21 itself, the reflection brightness corresponding to the ink portion 21 is positively correlated with its thickness, and the reflection brightness corresponding to the ink portion 21 is also positively correlated with its orthographic projection area. On this basis, under the same light irradiation condition, the first ink portion 22 can have a greater reflection brightness than the second ink portion 23.

[0137] In the embodiment of the present application, considering that the human eye is usually more sensitive to green, the orthographic projection area of ​​the first ink portion 22 on the first substrate 10 is set to be larger than the orthographic projection area of ​​the second ink portion 23 on the first substrate 10, or the thickness of the first type of ink portion 24 is set to be larger than the thickness of the second ink portion 23. In this way, the first ink portion 22 has a stronger light reflection effect than the second ink portion 23, the light brightness of the display panel 100 at the first ink portion 22 is increased, and the viewing experience of the display panel 100 is improved.

[0138] In some embodiments, Fig.13 and Fig.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, and the thickness of the third ink portion 27 is smaller 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 smaller 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 section 22 and the second ink section 23, the plurality of ink sections 21 may further include a third ink section 27, wherein the first ink section 22, the second ink section 23 and the third ink section 27 respectively include a green ink section 21, a red ink section 21 and a blue ink section 21. On this basis, considering that blue light is potentially harmful to the eyes, the embodiment of the present application chooses to make the thickness of the third ink section 27 smaller than the thickness of at least one of the first ink section 22 and the second ink section 23, or to make the orthographic projection area of ​​the third ink section 27 on the first substrate 10 smaller than the orthographic projection area of ​​at least one of the first ink section 22 and the second ink section 23 on the first substrate 10, so that the third ink section 27 has a smaller light reflection ability relative to at least one of the first ink section 22 and the second ink section 23, thereby reducing the blue light brightness of the display panel 100 and improving the eye protection ability of the display panel 100.

[0140] In some optional embodiments, the thickness of the first ink portion 22, the second ink portion 23, and the third ink portion 27 is reduced in this way; and / or the orthographic projection area of ​​the first ink portion 22, the second ink portion 23, and the third ink portion 27 on the first substrate 10 is reduced in this way. This design can increase the green light brightness of the display panel 100 and improve the viewing experience of the display panel 100, and can reduce the blue light brightness of the display panel 100 and improve the eye protection ability of the display panel 100.

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

[0142] The connecting portion 26 is a structure in the color ink layer 20 for connecting adjacent different ink portions 21, and the connecting portion 26 can be used to separate adjacent different ink portions 21 from each other to reduce the risk of material mixing between different ink portions 21 and improve the color accuracy of the reflected light corresponding to a single ink portion 21. Unlike the ink portion 21, the connecting portion 26 is not used to reflect ambient light, so compared with the ink portion 21, the connecting portion 26 has more material selection methods, for example, the connecting portion 26 can include a color ink material, or the connecting portion 26 can also include a black or white ink material, or the connecting portion 26 can also include other materials besides the ink material, and the embodiments of the present application are not limited to this.

[0143] In addition, the size relationship between the connection portion 26 and the ink portion 21 may also have various forms, for example, the thickness of the connection portion 26 may be greater than, equal to, or less than the thickness of the ink portion 21. Optionally, the thickness of the connection portion 26 may be the same as the thickness of the ink portion 21, so that the connection portion 26 and the surface of the ink portion 21 facing away from the first substrate 10 may form a flat surface together, thereby reducing the difficulty of preparing other structures formed after the color ink layer 20.

[0144] The pixel electrode 30 is located on the side of the connecting portion 26 facing 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, wherein 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 also partially overlap with the orthographic projection of the ink portion 21 on the first substrate 10.

[0145] In the embodiment of the present application, 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, and the existence of the connecting portion 26 enables the second bottom surface to be located on the side of the first bottom surface away from the first substrate 10, so that the pixel electrode 30 can be arranged beyond the surface of the ink portion 21 away from the first substrate 10 without additionally increasing the thickness of the pixel electrode 30, that is, at least part of the structure of the pixel electrode 30 at the side wall will not abut against the ink portion 21, but will be exposed in the electrophoretic layer 40. On this basis, when the pixel electrode 30 needs to adsorb the electrophoretic particles 41 to meet the reflection requirements of the corresponding ink portion 21, the pixel electrode 30 can adsorb at least part of the electrophoretic particles 41 at the side wall in addition to adsorbing the electrophoretic particles 41 at the surface away from the first substrate 10, thereby improving the adsorption capacity of the pixel electrode 30 for the electrophoretic particles 41. At the same time, this also helps to reduce the distance between the electrophoretic particles 41 and the pixel electrode 30, thereby improving the response rate of the electrophoretic particles 41 and improving the display effect of the display panel 100.

[0146] In some embodiments, see 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, and the second orthographic projection T2 does not overlap with the first orthographic projection T1. In other words, the second orthographic projection T2 is located outside the first orthographic projection T1 and is spaced apart from each other.

[0147] In the embodiment of the present application, 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, so that the pixel electrode 30 will not have a covering or shielding effect on the ink portion 21. On this basis, ambient light can be irradiated to various positions on the surface of the ink portion 21 away from the first substrate 10 and reflected, which helps to increase 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 the second edge E2” mentioned here means: for a single ink portion 21 and the corresponding pixel electrode 30, the first edge E1 is the edge of the first orthographic projection T1 of the ink portion 21 toward the second orthographic projection T2 of the pixel electrode 30, and the second edge E2 is the edge of the second orthographic projection T2 of the pixel electrode 30 toward the first orthographic projection T1 of the ink portion 21. And the “diameter D of the electrophoretic particle 41” mentioned here means: if the electrophoretic particle 41 is a regular spherical structure, then D is the diameter of the spherical structure; if the electrophoretic particle 41 is an irregular spherical or other structure, then D is the maximum cross-sectional length dimension of the structure.

[0150] In addition, the first edge E1 and the second edge E2 can both be straight line structures, or at least one of them can also include structures such as arcs or broken lines, and the first edge E1 and the second edge E2 can be arranged parallel to each other, or can be arranged non-parallel to each other. The embodiments of the present application are not limited to this, and the "distance L between the first edge E1 and the second edge E2" refers to; in the arrangement direction of the first orthographic projection T1 and the second orthographic projection T2, the maximum distance between the first edge E1 and the second edge E2.

[0151] In the embodiment of the present application, taking into account that when the electrophoretic particles 41 do not block the ink portion 21, at least part of the electrophoretic particles 41 will be adsorbed on the side wall of the pixel electrode 30, on this basis, by setting the distance L between the first edge E1 and the second edge E2 to be greater than the diameter D of the electrophoretic particles 41, the blocking effect of the electrophoretic particles 41 adsorbed on the side wall of the pixel electrode 30 on the ink portion 21 can be reduced, thereby helping to increase the intensity of reflected light and improve the display brightness and display effect of the display panel 100.

[0152] In some embodiments, see Fig.15 and Fig.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 respectively, 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. On this basis, 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, and 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, the embodiment of the present application sets the distance L1 to be greater than the distance L2, that is, the distance between the first ink portion 22 and the first electrode 31 in a 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 a direction parallel to the plane of the first substrate 10. In this way, when the first electrode 31 and the second electrode 32 both adsorb the electrophoretic particles 41, the influence of the electrophoretic particles 41 located at the side wall of the first electrode 31 on the first ink portion 22 can be less than the influence of the electrophoretic particles 41 located at the side wall 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, thereby 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 set to include a green ink section 21, and the second ink section 23 can be set to include a blue ink section 21 or a red ink section 21. On this basis, the embodiment of the present application increases the reflection brightness of the green light by setting the distance L1 to be greater than the distance L, thereby improving the viewing experience of the display panel 100.

[0156] In some embodiments, see Fig.19 The pixel electrode 30 is disposed in the same layer as the ink portion 21. In other words, at least a portion of the side wall of the pixel electrode 30 can be disposed in contact with the side wall of the ink portion 21.

[0157] It should be noted that there are various size 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 may be located on the side of the surface of the ink portion 21 facing away from the first substrate 10 that faces toward or away from the first substrate 10.

[0158] In the embodiment of the present application, since the pixel electrode 30 and the ink portion 21 are arranged in the same layer, the pixel electrode 30 can be used to separate adjacent different ink portions 21, thereby reducing the risk of material mixing between different ink portions 21, improving the color accuracy of the reflected light corresponding to a single ink portion 21, and improving the display effect of the display panel 100.

[0159] In some embodiments, see Fig. 20, in a direction perpendicular to the plane where the first substrate 10 is located, the distance between the surface of the pixel electrode 30 facing away from the first substrate 10 and the first substrate 10 is greater than the distance between the surface of the ink portion 21 facing away from the first substrate 10 and the first substrate 10. The direction perpendicular to the plane where the first substrate 10 is located is the thickness direction Z of the first substrate 10.

[0160] In conjunction with the accompanying drawings, the surface of the ink portion 21 away from the first substrate 10 is the first top surface M1, and the surface of the pixel electrode 30 away from the first substrate 10 is the second top surface M2, and the second top surface M2 is located on the side of the first top surface M1 away from the first substrate 10. On this basis, at least part of the structure of the pixel electrode 30 at the side wall will not abut against the ink portion 21, but will be exposed in the electrophoretic layer 40. Therefore, when the pixel electrode 30 needs to adsorb the electrophoretic particles 41 to meet the reflection requirements of the corresponding ink portion 21, the pixel electrode 30 can adsorb at least part of the electrophoretic particles 41 at the side wall in addition to adsorbing the electrophoretic particles 41 away from the second top surface M2, thereby improving the adsorption capacity of the pixel electrode 30 for the electrophoretic particles 41. At the same time, this also helps to reduce the distance between the electrophoretic particles 41 and the pixel electrode 30, thereby improving the response rate of the electrophoretic particles 41 and improving the display effect of the display panel 100.

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

[0162] The “direction parallel to the plane of the first substrate 10 ” mentioned here refers to a direction perpendicular to the thickness direction Z of the first substrate 10 . In the direction parallel to the plane of the first substrate 10 , the ink portion 21 is at least partially located between the 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 and faces away from the first substrate 10. Fig. 20 For example, the pixel electrode 30 includes a first main body portion 36 in addition to the first protrusion 35. The first main body portion is a partial structure of the pixel electrode 30 that does not extend beyond the surface of the ink portion 21 away from the first substrate 10, and the first main body portion 36 is integrally connected to the first protrusion 35.

[0164] The first bottom wall 352 and the first side wall 351 are wall structures of the first protrusion 35 at different positions, respectively. The first bottom wall 352 can be arranged parallel to the plane where the first substrate 10 is located, 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, for example, the first side wall 351 can be a plane structure, or the first side wall 351 can also be a curved surface structure.

[0165] On this basis, if the first bottom wall 352 and the first side wall 351 are both planar structures, 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 a curved structure, α1 represents the angle between the tangent plane of the curved structure at the contact position with the planar structure and the planar structure.

[0166] Furthermore, 0<α1<90°, which means that in the direction perpendicular to the plane of the first substrate 10 and away from the first substrate 10, the first side wall 351 of the pixel electrode 30 is tilted away from the adjacent corresponding ink portion 21. Under this design, part of the wide viewing angle light reflected by the ink portion 21 can be emitted from the display panel 100 along the slope of the first side wall 351, and will not be irradiated and absorbed by the pixel electrode 30, thereby helping to improve the display brightness of the display panel 100 under wide viewing angle observation and improve the use scenario range of the display panel 100.

[0167] It should be noted that the specific value of α1 is not limited in the embodiment of the present application. Optionally, α1 is one of 5°, 10°, 15°, 20°, 30°, 35°, 45°, 55°, 60°, 75° and 80°. As for the first body portion, the first body portion may also include a bottom wall and a side wall structure, and the relationship between the bottom wall structure and the side wall structure may be the same as the relationship between the first bottom wall 352 and the first side wall 351, or may be different. 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 plane structure or curved surface structure.

[0168] In some embodiments, see Fig. 22 In a direction perpendicular to the plane where the first substrate 10 is located, the distance between the surface of the ink portion 21 facing away from the first substrate 10 and the first substrate 10 is greater than the distance between the surface of the pixel electrode 30 facing away from the first substrate 10 and the first substrate 10 .

[0169] It can be seen from the accompanying drawings that the first top surface M1 is located on the side of the second top surface M2 away from the first substrate 10, and the pixel electrode 30 will not completely block the side wall of the ink portion 21, that is, at least part of the structure of the ink portion 21 at its side wall will not abut against the ink portion 21, but will be exposed in the electrophoretic layer 40. On this basis, when the ink portion 21 needs to reflect light to meet display needs, the ambient light can not only propagate to the first top surface M1 and be reflected, but also propagate to the side wall of the pixel electrode 30 and be reflected, which helps to improve the reflection ability of the ink portion 21 to light and improve the display brightness of the display panel 100.

[0170] It should be noted that the ink portion 21 and the pixel electrode 30 may have a variety of positional relationships. For example, the orthographic projection of the ink portion 21 on the first substrate 10 may be located outside the orthographic projection of the corresponding pixel electrode 30 on the first substrate 10, and the two may be spaced apart or arranged adjacent to each other, or the partial structure of the ink portion 21 that exceeds the pixel electrode 30 in the thickness direction Z of the first substrate 10 may cover the partial structure of the surface of the pixel electrode 30 that is away from the first substrate 10. The embodiments of the present application are not limited to this.

[0171] In some embodiments, see Fig. 22 and Fig.23 The ink portion 21 includes a second protrusion 211 located on the side of the pixel electrode 30 away from the first substrate 10 , and the orthographic projection of the second protrusion 211 on the first substrate 10 overlaps with the orthographic projection edge of the pixel electrode 30 on the first substrate 10 .

[0172] The second protrusion 211 is a part of the ink portion 21 that extends beyond the surface of the pixel electrode 30 away from the first substrate 10. Fig. 22 Specifically, the ink portion 21 includes, in addition to the second protrusion 211, a second main body portion 213. The second main body portion 213 is a partial structure of the ink portion 21 that does not extend beyond the surface of the pixel electrode 30 that is away from the first substrate 10, and the second main body portion 213 is integrally connected to the second protrusion 211.

[0173] In the embodiment of the present application, the top surface of the second protrusion 211 facing away from the first substrate 10, and the side surfaces of the second protrusion 211 are exposed in the electrophoretic layer 40, and the top surface and the side surfaces 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 portion 21. On this basis, by increasing the size of the second protrusion 211, its orthographic projection on the first substrate 10 and the edge of the orthographic projection of the pixel electrode 30 on the first substrate 10 are overlapped, which helps to increase the size of at least one of the top surface and the side surfaces of the second protrusion 211, thereby enhancing the reflection effect of the ink portion 21 on ambient light and improving the display brightness of the display panel 100.

[0174] In addition, since the second ink portion 23 only covers the edge area of ​​the pixel electrode 30, the central area of ​​the surface of the pixel electrode 30 facing away from the first substrate 10 is still exposed in the electrophoretic layer 40 and plays a role in adsorbing the electrophoretic particles 41, thereby meeting the screen switching needs of the display panel 100.

[0175] In some embodiments, see Fig.24 The overlapping area between the second protrusion 211 corresponding to the first ink portion 22 and the orthographic projection of the pixel electrode 30 on the first substrate 10 is greater than the overlapping area between the second protrusion 211 corresponding to the second ink portion 23 and the orthographic projection of the pixel electrode 30 on the first substrate 10 .

[0176] In combination with the foregoing, it can be seen that the size of the second protrusion 211 often determines the reflection effect of the ink portion 21 on ambient light. On this basis, by increasing the overlapping area of ​​the second protrusion 211 and the corresponding positive projection of the pixel electrode 30, the size of at least one of the top surface or side surface of the second protrusion 211 can be increased, thereby improving its reflection effect on ambient light.

[0177] On this basis, the embodiment of the present application sets the overlapping area between the second protrusion 211 corresponding to the first ink portion 22 and the pixel electrode 30 to be larger than the overlapping area between the second protrusion 211 corresponding to the second ink portion 23 and the pixel electrode 30, thereby helping 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, thereby 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 configured to include a green ink portion 21, and the second ink portion 23 can be configured to include a blue ink portion 21 or a red ink portion 21. On this basis, the embodiment of the present application helps to increase the reflection brightness of green light and improve the viewing experience of the display panel 100 by setting the overlapping area of ​​the second protrusion 211 corresponding to the first ink portion 22 and the orthographic projection of the pixel electrode 30 on the first substrate 10 to be larger than the overlapping area of ​​the second protrusion 211 corresponding to the second ink portion 23 and the orthographic projection of the pixel electrode 30 on the first substrate 10.

[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 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, see Fig.25 In a direction parallel to the plane where the first substrate 10 is located, the second protrusion 211 has a second side wall, wherein the second side wall includes a first arc surface 212 and is protruding outward.

[0181] The second side wall is the peripheral side wall surface of the second protrusion 211, and the second side wall includes a first curved surface 212, that is, the second side wall has a curved surface area, and the curved surface area is convex. In the embodiment of the present application, part of the ambient light can be reflected at the second side wall to increase the intensity of the reflected light at the ink portion 21. On this basis, by providing the second side wall with a first curved surface 212 protruding outward, the diffusion uniformity of the light at the second side wall is better with the help of the first curved surface 212, so that the ambient light can be diffused in more directions after being reflected by the second side wall, thereby reducing the risk of dark lines due to the low reflection brightness in the area between adjacent ink portions 21, and improving the display uniformity.

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

[0183] Since the first curved surface 212 is protruding outward, the angle α2 between the tangent plane of the first curved surface 212 at the position where the pixel electrode 30 contacts and the second top surface M2 will be greater than the angle between the tangent plane of the first curved surface 212 at other positions and the second top surface M2, and the angle between the tangent plane 214 of the first curved surface 212 at the position where the first curved surface 212 contacts the top surface of the second protrusion 211 and the second top surface M2 can be 0°. In other words, in the direction perpendicular to the plane where the first substrate 10 is located and away from the first substrate 10, the angle between the corresponding tangent plane of the first curved surface 212 and the second top surface M2 gradually decreases and can eventually be 0, and α2 is the maximum angle that can be formed with the second top surface M2 among all the tangent planes of the first curved surface 212.

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

[0185] In some embodiments, the color ink layer 20 includes a plurality of repeating units C arranged in an array, and the repeating unit C includes at least one first ink portion 22 and at least one second ink portion 23. The curvature of the first curved 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 curved surface 212 corresponding to other ink portions 21 located in the repeating unit C.

[0186] The "ink portion 21 located at the inner edge of the repeating unit C" mentioned here refers to: in a single repeating unit C, the ink portion 21 closest to other adjacent repeating units C, combined with Figure 5 For example, the repeating unit C includes a first ink portion 22, a second ink portion 23 and a third ink portion 27 which are arranged side by side in sequence along the first direction X, and multiple repeating units C are arranged side by side in the first direction X. On this basis, the first ink portion 22 and the third ink portion 27 are the ink portions 21 located at the inner edge position of the repeating unit C, and the second ink portion 23 is the other ink portion 21 in 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 to cause the reflected light corresponding to the ink portion 21 to fail to completely cover the area between adjacent repeating units C, thereby making the display panel 100 prone to the risk of dark lines between adjacent repeating units C.

[0188] In view of this, the curvature of the first curved surface 212 corresponding to the ink portion 21 at the edge position of the repeating unit C in the embodiment of the present application is set to be greater than the curvature of the first curved surface 212 corresponding to other ink portions 21 in the repeating unit C, so that the first curved surface 212 of the ink portion 21 at the edge position has a larger curvature, thereby increasing its reflection and diffusion ability to ambient light, so that the reflected light can better cover the area between adjacent repeating units C, reducing the risk of dark lines. At the same time, the first curved surface 212 of the ink portion 21 at other positions has a smaller curvature, thereby reducing the risk of color mixing and bright lines caused by overlapping reflected light corresponding to different ink portions 21, which helps to further improve the display uniformity and reliability of the display panel 100.

[0189] In some embodiments, see Fig.26, the display panel 100 also includes a common electrode 50 located on the side of the electrophoretic layer 40 away from the first substrate 10, and the common electrode 50 includes a plurality of electrode portions 51, and the orthographic projections of different electrode portions 51 on the first substrate 10 cover the orthographic projections of different pixel electrodes 30 on the first substrate 10. The electrode portion 51 includes a first surface 52 facing the pixel electrode 30, and the distance between the second curved surface 53 and the first substrate 10 gradually decreases in a direction parallel to the plane where the first substrate 10 is located and from the center of the pixel electrode 30 to the edge. In other words, the second curved surface 53 is protruded in a direction away from the first substrate 10. Fig.25 In the figure, a single electrode portion 51 is indicated by a dotted box.

[0190] The electrode portion 51 is a partial structure of the common electrode 50 corresponding to a single pixel electrode 30. The pixel electrode 30 and the corresponding electrode portion 51 can form an electric field structure together to drive the distribution state of the electrophoretic particles 41 in a partial area of ​​the electrophoretic layer 40. Among them, different electrode portions 51 are connected and arranged in one piece.

[0191] The orthographic projection of the electrode portion 51 on the first substrate 10 usually covers and exceeds the orthographic projection of the corresponding pixel electrode 30 on the first substrate 10, that is, the orthographic projection area of ​​a single electrode portion 51 on the first substrate 10 is often larger than the orthographic projection area of ​​a single pixel electrode 30 on the first substrate 10. On this basis, the multiple electric field lines in the electric field structure formed by the single pixel electrode 30 and the 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 greater the angle between the corresponding electric field line and the thickness direction Z of the first substrate 10. Fig.25 In the figure, the electric field lines are represented by virtual straight lines.

[0192] In view of this, the embodiment of the present application sets the first surface 52 of the electrode portion 51 to include a second curved surface 53 protruding away from the first substrate 10, wherein the extension direction of the radius corresponding to the second curved surface 53 at different positions can be the same as or similar to the direction of the electric field line corresponding to the position. On this basis, 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, thereby helping to increase the movement speed of the electrophoretic particle 41, improve the response rate, and meet the needs of fast switching of the display panel 100.

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

[0194] The ink section 21 can be formed by a mixed color matching process of multiple ink materials. For example, in order to meet the specific reflected light color requirements, the ink section 21 of a specific color can be prepared by a subtractive method, wherein the subtractive method is a method of obtaining a certain color of light by using the reflection and absorption of light waves. When light passes through a pigment or a colored object, these objects absorb or "subtract" certain colors of light, and the reflected light is the color of the object we see. Taking the green ink section 21 as an example, the green ink section 21 can include a yellow ink material and a cyan ink material. The ambient light is absorbed by the yellow ink material and the cyan ink material in the green ink section 21, so that green light remains and is reflected, thereby achieving the green light display requirement. For the red ink section 21, it can include a magenta ink material and a yellow ink material. For the blue ink section 21, it can include a magenta ink material and a cyan ink material.

[0195] In the embodiment of the present application, multiple ink materials are mixed and matched to form multiple ink portions 21 of different colors, thereby meeting the different color requirements of the display panel 100 and realizing the colorful display requirements of the display panel 100 .

[0196] Second, see Fig. 27 , an embodiment of the present application provides a display device 200, and the display device 200 includes a display panel in any of the aforementioned embodiments.

[0197] It should be noted that the display device 200 provided in the embodiment of the present application has the beneficial effects of the display panel in any of the aforementioned embodiments. Please refer to the aforementioned description of the beneficial effects of the display panel 100 for details, and the embodiment of the present application will not be repeated.

[0198] Third, see Fig.28 29 , the present application embodiment provides a method for manufacturing a display panel 100 , including:

[0199] S100: forming a connection function layer on one side of the first substrate.

[0200] See also Fig.29a In step S100 , the first substrate 10 plays a supporting role, and the connecting function layer 70 is located on one side of the first substrate 10 in the thickness direction Z. The connecting function layer 70 is used to form a connecting portion later.

[0201] S110: etching the connection function layer.

[0202] See also Fig.29bIn step S110, a plurality of opening structures 71 spaced apart can be formed by etching, and the connecting portion 26 of the integrated machine is located between adjacent opening structures 71. The opening structure 71 is used to accommodate the ink portion 21 later.

[0203] S120: forming a plurality of ink portions in the plurality of opening structures.

[0204] See also Fig.29c In step S120: the plurality of ink sections 21 include a first ink section 22 and a second ink section 23 of different colors. The specific colors of the first ink section 22 and the second ink section 23 are not limited in the embodiment of the present application. Optionally, the first ink section 22 includes a green ink section 21, and the second ink section 23 includes one of a red ink section 21 and a blue ink section 21. In addition, the embodiment of the present application also does not limit the formation method of the ink section 21. Optionally, the ink section 21 can be formed by inkjet printing or the like.

[0205] S130: forming a plurality of pixel electrodes on a side of the connecting portion away from the first substrate.

[0206] See also Fig.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 orthographic projection of the first ink portion 22 on the first substrate 10 is at least partially between the two first electrodes 31, and the orthographic projection of the second ink portion 23 on the first substrate 10 is at least partially between the two second electrodes 32.

[0207] The “first electrode 31 corresponding to the first ink portion 22” mentioned here means that the first electrode 31 can control part 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 area that coincides with the orthographic projection of the first ink portion 22 on the first substrate 10, and the first electrode 31 can control the distribution state of the electrophoretic particles 41 located in the first area. The “second electrode 32 corresponding to the second ink portion 23” is the same, and will not be described in detail in the present embodiment.

[0208] S140: forming an electrophoretic layer on a side of the pixel electrode away from the first substrate.

[0209] See also Fig.29eIn step S140, the electrophoretic layer 40 includes electrophoretic particles 41, and the electrophoretic layer 40 includes only one type of electrophoretic particles 41, and this type of electrophoretic particles 41 can shield the ambient light. The first electrode 31 and the second electrode 32 are respectively arranged corresponding to the first ink portion 22 and the second ink portion 23, and independently control the distribution of the electrophoretic particles 41 at the corresponding positions of the first ink portion 22 and the second ink portion 23. On this basis, the display panel 100 can selectively control whether the electrophoretic particles 41 cover the area where the first ink portion 22 is located through the first electrode 31, thereby adjusting the amount of ambient light propagating to the first ink portion 22, and realizing the display control of the specific color corresponding to the first ink portion 22. And the second electrode 32 can selectively control whether the electrophoretic particles 41 cover the area where the second ink portion 23 is located, thereby adjusting the amount of ambient light propagating to the second ink portion 23, and realizing the display control of the specific color corresponding to the second ink portion 23. In this case, the display panel 100 can realize the display requirement of color images under the cooperation of the color ink layer 20 , the electrophoretic layer 40 and the pixel electrode 30 .

[0210] In the embodiment of the present application, a connecting portion 26 having an opening structure 71 is first formed, thereby forming different ink portions 21 in different opening structures 71, thereby limiting the position of a single ink portion 21 with the help of the opening structure 71, and spacing between different ink portions 21 with the help of the connecting portion 26. This design helps to reduce the difficulty of preparing the display panel 100 and improve the preparation yield.

[0211] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0212] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: a first substrate; A color ink layer is disposed on one side of the first substrate, the color ink layer includes a plurality of ink portions, and the plurality of ink portions include a first ink portion and a second ink portion with different colors; A plurality of pixel electrodes are disposed on one side of the first substrate, the pixel electrodes comprising a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion; an electrophoretic layer, disposed on a side of the color ink layer and the pixel electrode away from the first substrate, the electrophoretic layer comprising electrophoretic particles; 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.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a common electrode located on a side of the electrophoretic layer away from 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, the voltage of the second electrode is V3, 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, and V5>V4>V6.

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

4. The display panel according to claim 1, characterized in that: The orthographic projections of the plurality of first electrodes corresponding to the first ink portion on the first substrate surround the orthographic projection of the first ink portion on the first substrate, and the orthographic projections of the plurality of second electrodes corresponding to the second ink portion on the first substrate surround the orthographic projection of the second ink portion on the first substrate, and the first electrodes are spaced apart from the second electrodes.

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 a support column disposed in the electrophoretic layer, wherein the orthographic projection of the support column on the first substrate is disposed between the orthographic projections of adjacent ink portions on the first substrate; Wherein, the support column is not arranged between some adjacent ink portions.

7. The display panel according to claim 6, characterized in that: The color ink layer includes a plurality of repeating units arranged in an array, and the repeating unit includes at least one first ink portion and at least one second ink portion; The orthographic projection of the support column on the first substrate is located between the orthographic projections of adjacent repeating units on 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, 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, an orthographic projection of the first type of ink portion on the first substrate is at least partially located between two orthographic projections of the first type of electrodes on the first substrate, and an orthographic projection of the second type of ink portion on the first substrate is at least partially located between two orthographic projections of the second type of electrodes on the first substrate; The support column is located on a 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 column on the first substrate; The orthographic projection area of ​​the first type of electrodes on the first substrate is larger than the orthographic projection area of ​​the second type of electrodes 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, 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, an orthographic projection of the first type of ink portion on the first substrate is at least partially located between two orthographic projections of the first type of electrodes on the first substrate, and an orthographic projection of the second type of ink portion on the first substrate is at least partially located between two orthographic projections of the second type of electrodes on the first substrate; The support column is located on a 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 column on the first substrate; The thickness of the first type of ink portion is greater than the thickness of the second type of ink portion, and / or the orthographic projection area of ​​the first type of ink portion on the first substrate is greater than the orthographic projection 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 portion includes a green ink portion.

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, An orthographic projection area of ​​the first ink portion on the first substrate is larger than an orthographic projection 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 sections include a third ink section, the second ink section includes a red ink section, and the third ink section includes a blue ink section; The thickness of the third ink portion is smaller than the thickness of at least one of the first ink portion and the second ink portion; And / or, an orthographic projection area of ​​the third ink portion on the first substrate is smaller than an orthographic projection 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 color ink layer further includes a connecting portion located between adjacent ink portions, and the pixel electrode is located on a side of the connecting portion away from the first substrate.

15. The display panel according to claim 14, characterized in that: 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, and the second orthographic projection is arranged not to overlap with the first orthographic projection.

16. The display panel according to claim 15, 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.

17. The display panel according to claim 16, 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.

18. The display panel according to claim 1, characterized in that: The pixel electrode is arranged in the same layer as the ink portion.

19. The display panel according to claim 18, characterized in that: In a direction perpendicular to the plane where the first substrate is located, a distance between a surface of the pixel electrode facing away from the first substrate and the first substrate is greater than a distance between a surface of the ink portion facing away from the first substrate and the first substrate.

20. The display panel according to claim 19, characterized in that: The pixel electrode comprises a first protrusion located on a side of the ink portion away from the first substrate, wherein the first protrusion has a first side wall in a direction parallel to the plane where the first substrate is located, and in a direction perpendicular to the plane where the first substrate is located, the first protrusion has a first bottom wall facing the first substrate; The included angle between the first side wall and the first bottom wall is α1, and 0<α1<90°.

21. The display panel according to claim 18, characterized in that: In a direction perpendicular to the plane where the first substrate is located, a distance between a surface of the ink portion facing away from the first substrate and the first substrate is greater than a distance between a surface of the pixel electrode facing away from the first substrate and the first substrate.

22. The display panel according to claim 21, characterized in that: The ink portion includes a second protrusion located at a side of the pixel electrode away from the first substrate, and an orthographic projection of the second protrusion on the first substrate overlaps an edge of an orthographic projection of the pixel electrode on the first substrate.

23. The display panel according to claim 22, characterized in that: An overlapping area between the second protrusion corresponding to the first ink portion and the orthographic projection of the pixel electrode on the first substrate is greater than an overlapping area between the second protrusion corresponding to the second ink portion and the orthographic projection of the pixel electrode on the first substrate.

24. The display panel according to claim 22, characterized in that: The second protrusion has a second side wall in a direction parallel to the plane where the first substrate is located; Wherein, the second side wall includes a first arc surface and is protruded outward.

25. The display panel according to claim 24, characterized in that: The angle between the tangent plane of the first curved surface at the position in contact 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°.

26. The display panel according to claim 24, characterized in that: The color ink layer includes a plurality of repeating units arranged in an array, and the 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 position of the repeating unit is greater than the curvature of the first arc surface corresponding to other ink portions located in the repeating unit.

27. The display panel according to claim 1, characterized in that: The display panel further includes a common electrode located on a side of the electrophoretic layer away from the first substrate, the common electrode including a plurality of electrode portions, and orthographic projections of different electrode portions on the first substrate cover orthographic projections of different pixel electrodes on the first substrate; The electrode portion includes a first surface facing the pixel electrode, the first surface includes a second curved surface covering and exceeding the pixel electrode, and the distance between the second curved 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.

28. The display panel according to claim 1, characterized in that: At least part of the ink portion includes a plurality of ink materials of different colors arranged in a stacked manner.

29. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 28.

30. A method for preparing a display panel, characterized in that: include: forming a connection function layer on one side of the first substrate; Etching the connection function layer to form a plurality of opening structures arranged at intervals and a connection portion between adjacent opening structures; forming a plurality of ink portions in the plurality of opening structures, the plurality of ink portions comprising a first ink portion and a second ink portion having different colors; A plurality of pixel electrodes are formed on a side of the connecting portion facing away from the first substrate, the pixel electrodes comprising a first electrode corresponding to the first ink portion and a second electrode corresponding to the second ink portion, an orthographic projection of the first ink portion on the first substrate is at least partially located between two orthographic projections of the first electrodes on the first substrate, and an orthographic projection of the second ink portion on the first substrate is at least partially located between two orthographic projections of the second electrodes on the first substrate; An electrophoretic layer is formed on a side of the pixel electrode facing away from the first substrate, and the electrophoretic layer includes electrophoretic particles.

Images