Display panel and manufacturing method therefor, and display device

Abstract

A display panel and a manufacturing method therefor, and a display device. A display panel (20) comprises: a substrate (21), a light-transmitting substrate (22), an electrophoretic liquid layer (23), a plurality of light converging and reflecting structures (24), and a plurality of corresponding scattering structures (25). The light converging and reflecting structures (24) reflect and converge light incident into the display panel (20), and direct the reflected light to the corresponding scattering structures (25), such that the reflected light passes through the scattering structures (25) and emerges from the display panel (20); and the scattering structures (25) can expand the irradiation area of the emergent light and improve the visual uniformity of the emergent light, thereby improving the display effect of the display panel (20). Moreover, the area of the orthographic projections of the scattering structures (25) on the substrate (21) is smaller than the area of the orthographic projections of the light converging and reflecting structures (24) on the substrate (21), such that at least part of the light incident to the light converging and reflecting structures (24) does not need to pass through the scattering structures (25), thereby reducing the loss of light, improving the reflection efficiency of the display panel (20), and improving the display effect of the display panel (20).

Description

Display panel, manufacturing method thereof, and display device Technical Field

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

[0002] A reflective display panel is a display device that achieves display by reflecting ambient light incident on the display panel. In other words, a reflective display panel does not require an additional backlight module to provide backlighting for its display.

[0003] A display panel includes a stacked reflective layer, a first electrode, an electrophoretic liquid layer containing multiple light-shielding charged particles, and a second electrode. The first and second electrodes control the light-shielding charged particles to gather at the two electrodes respectively. When the light-shielding charged particles gather at the first electrode, there are gaps between the multiple light-shielding charged particles, allowing external light to shine onto the reflective layer and be reflected by the reflective layer to a scattering structure. The scattering structure transmits the light to achieve the bright state display of the display panel. When the light-shielding charged particles gather at the second electrode, the light-shielding charged particles absorb external light to achieve the dark state display of the display panel, thereby realizing the display function of the display panel.

[0004] However, the display panel described above has a poor display effect when it is on.

[0005] Summary of the Invention

[0006] This application provides a dimming device and a method for manufacturing the dimming device, which can solve the problem of poor heat insulation effect in dimming devices in related technologies. The technical solution is as follows:

[0007] According to a first aspect of this application, a display panel is provided, the display panel comprising:

[0008] Opposite substrate and light-transmitting substrate, and an electrophoretic liquid layer located between the substrate and the light-transmitting substrate, the electrophoretic liquid layer including a dispersion medium and a plurality of light-shielding charged particles located in the dispersion medium;

[0009] Multiple light-concentrating and reflecting structures and corresponding multiple scattering structures are provided. The light-concentrating and reflecting structures are located between the substrate and the electrophoretic liquid layer, and the scattering structures are located on the side of the electrophoretic liquid layer away from the substrate. The light-concentrating and reflecting structures are used to receive at least a portion of the light transmitted through the light-transmitting substrate and reflect the received light toward the corresponding scattering structure.

[0010] At least a portion of the orthogonal projection of the light-concentrating reflective structure onto the substrate lies outside the orthogonal projection of the corresponding scattering structure onto the substrate.

[0011] Optionally, the light-concentrating reflective structure has a reflective surface on the side near the scattering structure, and the reflective surface is a concave reflective surface that is recessed toward the substrate.

[0012] Optionally, the light-concentrating reflective structure includes a reflective base and a reflective layer located on the side of the reflective base facing away from the substrate.

[0013] The reflective base includes a top surface and a bottom surface opposite each other, the top surface being located on the side of the bottom surface away from the substrate, and the top surface including a first concave surface recessed toward the substrate.

[0014] The reflective layer is located on the first concave surface, and the side of the reflective layer facing away from the reflective base is the concave reflective surface.

[0015] Optionally, the substrate includes a first substrate and a pixel electrode, the pixel electrode being located between the electrophoretic layer and the first substrate, the first substrate including a pixel circuit, and the pixel circuit being electrically connected to the pixel electrode;

[0016] The orthographic projection of the pixel electrode on the first substrate is located outside the orthographic projection of the reflective layer on the first substrate.

[0017] Optionally, the reflective base further includes a side surface connecting the top surface and the bottom surface, and the top surface further includes an annular surface located around the first concave surface;

[0018] The pixel electrode includes a connected base electrode and an extended electrode. The base electrode is connected to the first substrate, and the extended electrode covers the side and annular surface of the reflective base. The end of the extended electrode opposite to the base electrode has a first gap with the reflective layer.

[0019] Optionally, the reflective layer may be made of a metallic material, and the reflective layer and the extended electrode may be a co-layer structure formed by the same patterning process.

[0020] Optionally, the included angle between the side surface and the bottom surface is in the range of 45° to 60°.

[0021] Optionally, the display panel further includes a barrier structure located between the substrate and the light-transmitting substrate;

[0022] The barrier structure divides the gap between the substrate and the light-transmitting substrate into multiple chambers, and the electrophoretic liquid layer is located in the multiple chambers.

[0023] The plurality of light-concentrating and reflective structures correspond one-to-one with the plurality of chambers, and the orthogonal projection of the light-concentrating and reflective structure on the substrate is located in the orthogonal projection of the corresponding chamber on the substrate.

[0024] Optionally, the ratio of the area of ​​the orthographic projection of the scattering structure onto the substrate to the area of ​​the orthographic projection of the cavity onto the substrate is 10% to 30%.

[0025] Optionally, in a direction perpendicular to the surface of the substrate, the height of the barrier structure and the height of the light-concentrating and reflecting structure satisfy a first relationship, which is:

[0026] Wherein, H is the height of the retaining wall structure, and h is the height of the light-concentrating and reflecting structure.

[0027] Optionally, the center of the orthographic projection of the scattering structure on the substrate coincides with the center of the orthographic projection of the corresponding focusing and reflecting structure on the substrate.

[0028] Optionally, the light-transmitting substrate includes a second substrate and a common electrode, the common electrode being located between the second substrate and the electrophoretic liquid layer, and the scattering structure being located between the common electrode and the second substrate.

[0029] Optionally, the material of the reflective base includes at least one of acrylic resin and epoxy resin.

[0030] According to another aspect of this application, a method for manufacturing a display panel is provided, the method comprising:

[0031] Multiple light-concentrating and reflective structures are formed on the substrate.

[0032] A stacked electrophoretic liquid layer, multiple scattering structures, and a light-transmitting substrate are disposed on the side of the plurality of light-concentrating and reflective structures away from the substrate.

[0033] The electrophoretic liquid layer includes a dispersion medium and a plurality of light-shielding charged particles located in the dispersion medium. The plurality of light-concentrating reflective structures and the plurality of scattering structures correspond to each other. The light-concentrating reflective structures are located between the substrate and the electrophoretic liquid layer. The scattering structures are located on the side of the electrophoretic liquid layer away from the substrate. The light-concentrating reflective structures are used to receive at least a portion of the light transmitted through the light-transmitting substrate and reflect the received light toward the corresponding scattering structure. At least a portion of the orthographic projection of the reflective structure on the substrate is located outside the orthographic projection of the corresponding scattering structure on the substrate.

[0034] According to another aspect of this application, a display device is provided, the display device comprising: a power supply component and a display panel, the display panel being the display panel described above, and the power supply component being used to supply power to the display panel.

[0035] The beneficial effects of the technical solutions provided in this application include at least the following:

[0036] A display panel is provided, comprising a substrate, a transparent substrate, an electrophoretic layer, multiple light-concentrating and reflecting structures, and corresponding multiple scattering structures. The light-concentrating and scattering structures reflect and converge light incident on the display panel, and guide the reflected light to the corresponding scattering structures, allowing the reflected light to pass through the scattering structures and exit the display panel. The scattering structures can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby enhancing the display effect of the display panel. Furthermore, the area of ​​the orthographic projection of the scattering structure onto the substrate can be smaller than the area of ​​the orthographic projection of the light-concentrating and reflecting structure onto the substrate, so that at least a portion of the light incident on the light-concentrating and reflecting structure does not need to pass through the scattering structures, reducing light loss, improving the reflection efficiency of the display panel, and further enhancing the display effect of the display panel. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a schematic diagram of a display panel structure;

[0039] Figure 2 is a schematic diagram of the display effect of the display panel shown in Figure 1;

[0040] Figure 3 is a schematic diagram of the structure of a display panel in a powered-on state according to an embodiment of this application;

[0041] Figure 4 is a schematic diagram of the display panel shown in Figure 3 in the state of being unpowered;

[0042] Figure 5 is a schematic diagram of another type of display panel;

[0043] Figure 6 is a schematic diagram of the structure of a scattering film in the display panel shown in Figure 5;

[0044] Figure 7 is a schematic diagram of another display panel structure in an embodiment of this application;

[0045] Figure 8 is a schematic diagram of a display panel structure;

[0046] Figure 9 is a schematic diagram of another type of display panel;

[0047] Figure 10 is a schematic diagram of another type of display panel;

[0048] Figure 11 is a schematic diagram of the display state of the display panel shown in Figure 10;

[0049] Figure 12 is a schematic diagram of the light-concentrating and reflective structure of a display panel and a substrate provided in an embodiment of this application;

[0050] Figure 13 is a schematic diagram of the light-concentrating reflective structure shown in Figure 12 and the projection of the substrate onto the substrate.

[0051] Figure 14 is a schematic diagram of the structure of the reflective base in the display panel shown in Figure 11;

[0052] Figure 15 is a schematic diagram of the orthographic projection of a scattering structure on a substrate according to an embodiment of this application;

[0053] Figure 16 is a schematic diagram of another display panel provided in an embodiment of this application;

[0054] Figure 17 is a schematic diagram of another type of display panel;

[0055] Figure 18 is a flowchart of a method for manufacturing a display panel according to an embodiment of this application;

[0056] Figure 19 is a flowchart of a method for manufacturing a display panel according to an embodiment of this application;

[0057] Figure 20 is a schematic diagram of the manufacturing process of a display panel according to an embodiment of this application;

[0058] Figure 21 is a schematic diagram of the manufacturing process of another display panel provided in an embodiment of this application.

[0059] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0061] Reflective display panels are devices that utilize natural ambient light for display. They can achieve clear display in both strong and weak light conditions using ambient light, and have the advantages of low driving voltage, energy saving, and less damage to the eyes.

[0062] Referring to Figure 1, the display panel 10 includes a first substrate 101, a metal reflective layer 102, a second insulating layer 103, a planarization layer 104, a first electrode 105, an electrophoretic layer 106 (also called an ink layer), a second electrode 108, and a second substrate 109, all stacked together. The electrophoretic layer 106 includes a dispersion medium and a plurality of black microparticles located in the dispersion medium. The display panel 10 also includes a pixel wall structure 107 (PW), which divides the space containing the electrophoretic layer 106 into multiple chambers. The electrophoretic layer 106 is located in multiple chambers, and each chamber represents a subpixel region of a subpixel on the display panel 10. The working principle of the display panel 10 is as follows: The display panel 10 has a display surface. When a voltage is applied to the electrodes in the display panel 10, the black microparticles in the electrophoretic liquid layer 106 will move to the side of the electrophoretic liquid layer 106 away from the display surface of the display panel 10. At this time, the black microparticles are located at the edge of the sub-pixel area. Ambient light can pass through the planarization layer 104 and the second insulating layer 103 to illuminate the metal reflective layer 102 and be reflected by the metal reflective layer 102 to achieve the bright state display of the display panel 10. Alternatively, when a voltage is applied to the electrodes in the display panel 10, the black microparticles in the electrophoretic liquid layer 106 will move to the side of the electrophoretic liquid layer 106 close to the display surface of the display panel 10. At this time, the ambient light will be absorbed by the black microparticles to achieve the dark state display of the display panel 10.

[0063] Please refer to Figure 2. Since the display panel 10 in Figure 1 reflects ambient light through the metal reflective layer 102 to achieve the bright state display of the display panel 10, the brightness uniformity may be poor during the display process. For example, under the same viewing angle, the display panel 10 will show different brightness in different areas when displaying the screen, as shown in Figure 2, with alternating bright and dark textures on the display surface of the display panel 10; the display panel 10 will also show different brightness under different viewing angles when displaying the screen, resulting in poor display effect of the display panel 10 when displaying the screen in the bright state.

[0064] This application provides a display panel 20. Please refer to Figures 3 and 4. In Figure 3, the solid lines with arrows represent incident light, the dashed lines with arrows represent reflected light reflected by the light-concentrating reflection structure 24, and the dotted lines with arrows represent outgoing light transmitted through the scattering structure 25.

[0065] The display panel 20 may include: a substrate 21 and a light-transmitting substrate 22 facing each other, an electrophoretic layer 23 located between the substrate 21 and the light-transmitting substrate 22, a plurality of light-concentrating and reflecting structures 24, and a plurality of corresponding scattering structures 25. The plurality of light-concentrating and reflecting structures 24 and the plurality of corresponding scattering structures 25 may correspond one-to-one. The electrophoretic layer 23 may include a dispersion medium 231 and a plurality of light-shielding charged particles 232 located in the dispersion medium 231, the light-shielding charged particles 232 may be black microparticles.

[0066] The light-concentrating and reflecting structure 24 is located between the substrate 21 and the electrophoretic liquid layer 23, and the scattering structure 25 is located on the side of the electrophoretic liquid layer 23 away from the substrate 21. The light-concentrating and reflecting structure 24 is used to receive at least part of the light transmitted through the light-transmitting substrate 22 and reflect the received light to the corresponding scattering structure 25.

[0067] When the display panel 20 is in a bright state, light from the external environment can pass through the light-transmitting substrate 22 and be incident on the electrophoretic liquid layer 23. The light passing through the light-transmitting substrate 22 and being incident on the electrophoretic liquid layer 23 can be incident light. At least a portion of the incident light can illuminate the light-concentrating reflection structure 24. The light-concentrating scattering structure 25 is used to reflect and converge the light incident on the display panel 20 and guide the reflected light to the corresponding scattering structure 25. The reflected light exits the display panel 20 through the scattering structure 25.

[0068] The scattering structure 25 is used to transform the point light source into an anisotropic surface light source. That is, the scattering structure 25 is used to receive the reflected light reflected by the light-concentrating reflection structure 24, and diffuse the reflected light before emitting the diffused light. The scattering structure 25 can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby improving the display effect of the display panel 20.

[0069] At least a portion of the orthographic projection of the light-concentrating reflective structure 24 onto the substrate 21 lies outside the orthographic projection of the corresponding scattering structure 25 onto the substrate 21. The area of ​​the orthographic projection of the scattering structure 25 onto the substrate 21 can be smaller than the area of ​​the orthographic projection of the light-concentrating reflective structure 24 onto the substrate 21, so that at least a portion of the light incident on the light-concentrating reflective structure 24 does not need to pass through the scattering structure 25, thereby reducing light loss, improving the reflection efficiency of the display panel 20, and further improving the display effect of the display panel 20.

[0070] In summary, this application provides a display panel comprising a substrate, a transparent substrate, an electrophoretic layer, multiple light-concentrating and reflecting structures, and corresponding multiple scattering structures. The light-concentrating and scattering structures reflect and converge light incident on the display panel, guiding the reflected light to the corresponding scattering structures so that the reflected light passes through the scattering structures and exits the display panel. The scattering structures can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby enhancing the display effect of the display panel. Furthermore, the area of ​​the orthographic projection of the scattering structure onto the substrate can be smaller than the area of ​​the orthographic projection of the light-concentrating and reflecting structure onto the substrate, so that at least a portion of the light incident on the light-concentrating and reflecting structure does not need to pass through the scattering structures, reducing light loss, improving the reflection efficiency of the display panel, and further enhancing the display effect of the display panel.

[0071] It is understood that both the substrate 21 and the light-transmitting substrate 22 have electrodes. The working principle of the display panel 20 is as follows: The display panel 20 has a display surface. When a voltage is applied to the electrodes in the display panel 20, the black microparticles in the electrophoretic liquid layer 23 will move to the side of the electrophoretic liquid layer 23 away from the display surface of the display panel 20. At this time, the black microparticles are located at the edge of the sub-pixel area. Light from the external environment can pass through the light-transmitting substrate 22 to illuminate the light-concentrating reflection structure 24, and be reflected by the light-concentrating reflection structure 24 to the scattering structure 25. After the light is scattered by the scattering structure 25, it is emitted from the display panel 20 to achieve the bright state display of the display panel 20. Alternatively, when a voltage is applied to the electrodes in the display panel 20, the black microparticles in the electrophoretic liquid layer 23 will move to the side of the electrophoretic liquid layer 23 closer to the display surface of the display panel 20. At this time, the ambient light will be absorbed by the black microparticles to achieve the dark state display of the display panel 20.

[0072] Referring to Figures 5 and 6, based on the display panel 10 shown in Figure 1, the display panel 10 may further include a scattering film 110, which can be attached to the side of the second substrate 109 facing away from the electrophoretic layer 106. The scattering film 110 includes a diffusion functional film layer 1101, a support layer 1102, and a scratch-resistant layer 1103 stacked along a direction away from the second substrate 109. The support layer 1102 is made of polyethylene terephthalate (PET). Because the scattering film 110 is a composite film layer, its overall transmittance is less than 85%. Therefore, after the incident light and the outgoing light pass through the scattering film 110 twice, the light output of the display panel 10 is only 72.25% of the original incident light, with a light output attenuation of at least 27%. The aforementioned display panel 10 has a low reflectivity in bright display mode, resulting in a poor display effect.

[0073] Compared to the display panel 10 shown in FIG5, the area of ​​the orthogonal projection of the scattering structure 25 on the substrate 21 in this embodiment is smaller than the area of ​​the orthogonal projection of the light-concentrating reflective structure 24 on the substrate 21. This means that at least part of the light incident on the light-concentrating reflective structure 24 does not need to pass through the scattering structure 25, which can reduce light attenuation, reduce light loss, improve the reflection efficiency of the display panel 20, and thus further improve the display effect of the display panel 20.

[0074] Please refer to Figure 7, which shows the structure of a sub-pixel in the display panel 20 to clearly illustrate the various structures in the display panel 20. In an optional embodiment, the light-concentrating reflective structure 24 has a reflective surface p1 on the side near the scattering structure 25. The reflective surface p1 is a concave reflective surface p1 that is recessed towards the substrate 21. The concave reflective surface p1 can be a part of any one of a sphere, an ellipsoid, and a cone. The area of ​​the orthographic projection of the scattering structure 25 onto the substrate 21 can be smaller than the area of ​​the orthographic projection of the reflective surface p1 of the light-concentrating reflective structure 24 onto the substrate 21. This allows at least a portion of the light incident on the reflective surface p1 of the light-concentrating reflective structure 24 to bypass the scattering structure 25, reducing light loss and improving the reflection efficiency of the display panel 20, thereby further improving the display effect of the display panel 20.

[0075] For example, the concave reflecting surface p1 can be a curved reflecting surface p1, which can be a parabolic reflecting surface p1. The focal point of the parabolic reflecting surface p1 coincides with the center point of the corresponding scattering structure 25, and the center point of the scattering structure 25 can be the geometric center of the scattering structure 25.

[0076] In one exemplary embodiment, the cross-sectional shape of the concave reflective surface p1 in the direction perpendicular to the surface of the substrate 21 can be a part of any one of a circle, an ellipse, and a triangle.

[0077] Since the concave reflective surface p1 in the focusing reflective structure 24 has its own reflection function, and the concave reflective surface p1 is a complete reflective surface p1, the problem of light leakage of the light beam irradiated onto the focusing reflective structure 24 can be avoided, resulting in high reflection efficiency of the focusing reflective structure 24.

[0078] Currently, the reflective display panel 10 in related technologies may include: electronic ink (E-Ink) reflective display panel 10 and clear-ink (CID) reflective display panel 10.

[0079] Please refer to Figure 8, which shows an E-Ink reflective display panel 10. The display panel 10 includes a first substrate 101, a first electrode 105, an electrophoretic layer 106 (also called an ink layer), a second electrode 108, and a second substrate 109 stacked together. The electrophoretic layer 106 includes microcapsules 1061, a diffusion medium located in the microcapsules 1061, and multiple reflective charged particles and multiple light-shielding charged particles. The multiple reflective charged particles are white particles, and the multiple light-shielding charged particles are black particles. The black particles are negatively charged, and the white particles are positively charged. The microcapsules 1061 are in an overall state of electrical equilibrium. The working principle of the display panel 10 is as follows: The display panel 10 has a display surface. When a voltage is applied to the electrodes in the display panel 10, the white microparticles in the electrophoretic layer 106 will move to the side of the electrophoretic layer 106 closer to the display surface of the display panel 10, and the black microparticles in the electrophoretic layer 106 will move to the side of the electrophoretic layer 106 away from the display surface of the display panel 10. At this time, the ambient light will be reflected by the white microparticles to achieve the bright state display of the display panel 10; or, the black microparticles in the electrophoretic layer 106 will move to the side of the electrophoretic layer 106 closer to the display surface of the display panel 10, and the white microparticles in the electrophoretic layer 106 will move to the side of the electrophoretic layer 106 away from the display surface of the display panel 10. At this time, the ambient light will be absorbed by the black microparticles to achieve the bright state display of the display panel 10.

[0080] For example, referring to Figure 8, the first substrate 101 and the second substrate 109 can be arranged opposite each other. The first electrode 105 is located on the side of the first substrate 101 near the electrophoretic layer 106, and the second electrode 108 is located on the side of the second substrate 109 near the electrophoretic layer 106. The white microparticles in the microcapsule 1061 can also be called white ink particles or white microspheres, and the black microparticles in the microcapsule 1061 can also be called black ink particles or black microspheres. The black and white microparticles carry different charges. For example, when the first electrode 105 and the second electrode 108 are not energized, the black microparticles carry a negative charge, and the white microparticles carry a positive charge, resulting in an overall electrical balance state for the microcapsule 1061. For example, as shown in the bright state display in Figure 8, when a positive voltage is applied to the first electrode 105, black microparticles move closer to the first electrode 105, and white microparticles are distributed above the microcapsule 1061 (i.e., on the side closer to the display surface). Ambient light incident from the second substrate 109 is reflected at the white microparticles in the microcapsule 1061. At this time, the display panel 10 can display a bright state. For example, as shown in the dark state display in Figure 8, when a negative voltage is applied to the first electrode 105, white microparticles move closer to the first electrode 105, and black microparticles are distributed above the microcapsule 1061. Ambient light incident from the second substrate 109 is absorbed at the black microparticles in the microcapsule 1061. At this time, the display panel 10 can display a dark state.

[0081] Referring to Figure 9, the display panel 10 has a similar structure to the display panel 10 shown in Figure 8, including a first substrate 101, a first electrode 105, an electrophoretic liquid layer 106, a second electrode 108, and a second substrate 109 stacked together. It also includes a barrier structure 107 with multiple chambers. The electrophoretic liquid layer 106 includes a diffusion medium and multiple reflective charged particles and multiple light-shielding charged particles located within the diffusion medium. The electrophoretic liquid layer 106 is located within the multiple chambers. The multiple reflective charged particles are white microparticles, and the multiple light-shielding charged particles are black microparticles. The black microparticles carry a negative charge, and the white microparticles carry a positive charge. The display panel 10 forms a microcup structure similar to the microcapsules 1061 in the display panel 10 in Figure 8 through the barrier structure 107. The white and black microparticles are moved up and down by an electric field to reflect or absorb ambient light, thereby achieving bright or dark display of the display panel 10.

[0082] Please refer to Figure 10. Figure 10 shows a CID reflective display panel 10. This display panel 10 has opposing color filter (CF) substrates, a driving array backplane, and an electrophoretic layer 106 located between the color filter substrate and the driving array backplane. The CF substrate has a lens structure, and the electrophoretic layer 106 includes a diffusion medium and black microparticles. The display panel 10 achieves bright-state display based on total internal reflection at the interface of the lens structure 112. The black microparticles can accumulate on the driving array backplane, and ambient light undergoes total internal reflection at the interface of the lens structure 112 to achieve bright-state display of the display panel 10; the black microparticles can also accumulate on the interface of the lens structure 112 to absorb external ambient light to achieve dark-state display of the display panel 10.

[0083] Please refer to Figure 11, in which a lens structure 112 is illustrated as an example. The color filter substrate includes a second substrate 109 and a filter layer 111 located on the second substrate 109, and the driving backplate can be the first substrate 101. Exemplarily, the display panel 10 includes: a second substrate 109 and a first substrate 101 facing each other, and an electrophoretic liquid layer 106 located between the second substrate 109 and the first substrate 101. It also includes a filter layer 111, a lens structure 112, a first electrode 105, a first dielectric layer 113, a second electrode 108, and a second dielectric layer 114. The filter layer 111 is located on the side of the second substrate 109 facing the electrophoretic liquid layer 106, the lens structure 112 is located on the side of the filter layer 111 close to the first substrate 101, the first electrode 105 is located on the side of the lens structure 112 close to the first substrate 101, the first dielectric layer 113 is located on the side of the first electrode 105 close to the first substrate 101, the second electrode 108 is located on the side of the first substrate 101 close to the electrophoretic liquid layer 106, and the second dielectric layer 114 is located on the side of the second electrode 108 close to the electrophoretic liquid layer 106. The display panel 10 also includes a barrier structure 107 having multiple chambers. The electrophoretic liquid layer 106 includes a diffusion medium and multiple black microparticles located in the diffusion medium. The electrophoretic liquid layer 106 is located in the multiple chambers, that is, the electrophoretic liquid layer 106 is located in the chambers enclosed by the first dielectric layer 113, the second dielectric layer 114, and the barrier structure 107. As shown in the bright state display in FIG11, when the first electrode 105 applies a black microparticle repulsion voltage and the second electrode 108 applies a black microparticle attraction voltage, the black microparticles migrate away from the second substrate 109. Since the refractive index of the first dielectric layer 113 is greater than the refractive index of the electrophoretic liquid layer 106, at least a portion of the ambient light incident from the second substrate 109 of the display panel 10 can undergo total internal reflection at the interface between the first dielectric layer 113 and the electrophoretic liquid layer 106 to achieve the bright state display of the display panel 10. As shown in the dark state display in Figure 11, when the first electrode 105 applies a black microparticle attraction voltage and the second electrode 108 applies a black microparticle repulsion voltage, the black microparticles in the electrophoretic layer 106 migrate towards the second substrate 109. The black microparticles in the electrophoretic layer 106 are adsorbed onto the surface of the first dielectric layer 113. Since the refractive index of the first dielectric layer 113 is less than the refractive index of the black microparticles, ambient light cannot undergo total internal reflection at the surface of the first dielectric layer 113. As a result, ambient light incident from the second substrate 109 of the display panel 10 is absorbed by the black microparticles in the electrophoretic layer 106 after passing through the first dielectric layer 113, thereby achieving the dark state display of the display panel 10.

[0084] However, when the first and second types of display panels 10 are in a bright state, some of the incident ambient light may pass through the gaps between the multiple white microparticles and illuminate the black microparticles, resulting in light leakage at the multiple white microparticles. Alternatively, the light reflected by some of the white microparticles may be blocked by the upper white microparticles, preventing direct reflection when the display panel 10 is in a bright state, thus resulting in low reflection efficiency when the display panel 10 is in a bright state. In the third type of display panel 10, some of the incident ambient light may not undergo total internal reflection at the interface between the first dielectric layer 113 and the electrophoretic liquid layer 106. This light will illuminate the black microparticles and be absorbed by them, resulting in light leakage at the first dielectric layer 113, thus reducing the overall reflectivity. Consequently, the contrast and brightness of the display panel 10 are reduced, leading to a poor display effect.

[0085] In this embodiment, the light-concentrating reflective structure 24 reflects the light irradiated onto the reflective surface p1 through the complete reflective surface p1 (concave reflective surface p1), thus avoiding the problem of light leakage of the light beam irradiated onto the light-concentrating reflective structure 24, making the reflection efficiency of the light-concentrating reflective structure 24 higher, thereby improving the contrast and brightness of the display panel 20, and thus improving the display effect of the display panel 20.

[0086] Please refer to Figures 12 and 13. Figure 13 illustrates the distribution relationship between the pixel electrode 212 and the reflective layer 242 and the boundary b1 of the sub-pixel region. In an optional embodiment, the light-concentrating reflective structure 24 may include a reflective base 241 and a reflective layer 242 located on the side of the reflective base 241 facing away from the substrate 21. The reflective base 241 may include an opposing top surface a1 and a bottom surface a2, with the top surface a1 located on the side of the bottom surface a2 facing away from the substrate 21. The top surface a1 includes a first concave surface a11 recessed towards the substrate 21. The reflective layer 242 may be located on the first concave surface a11, and the side of the reflective layer 242 facing away from the reflective base 241 is a concave reflective surface p1.

[0087] The bottom surface a2 of the reflective base 241 can be connected to the substrate 21. In an exemplary embodiment, the reflective base 241 can be manufactured by nanoimprinting. Optionally, the material of the reflective base 241 may include at least one of acrylic resin and epoxy resin.

[0088] The material of the reflective layer 242 may include metal, and the shape of the reflective layer 242 may be similar to the shape of the first concave surface a11. The reflective layer 242 can be fabricated on the first concave surface a11 of the reflective base 241 by magnetron sputtering or vapor deposition. The material of the reflective layer 242 may include metals with high reflectivity such as silver (Ag) or aluminum (Al).

[0089] Referring to Figures 12 and 13, in one optional embodiment, the substrate 21 may include a first substrate 211 and a pixel electrode 212, the pixel electrode 212 may be located between the electrophoretic layer 23 and the first substrate 211, the first substrate 211 may include a pixel circuit, and the pixel circuit is electrically connected to the pixel electrode 212; the light-transmitting substrate 22 includes a second substrate 221 and a common electrode 222, the common electrode 222 is located between the second substrate 221 and the electrophoretic layer 23.

[0090] The first substrate 211 can be an array substrate, which may include pixel driving circuits arranged in an array. Each pixel driving circuit is used, for example, to drive one pixel to control the voltage difference between the pixel electrode 212 and the common electrode 222 in the corresponding pixel, thereby realizing the display of the display panel 20. For example, the material of the first substrate 211 may be at least one of polydimethylsiloxane (PEMS), polyethylene terephthalate (PET), and polyimide (PI).

[0091] The pixel electrode 212 is connected to the pixel driving circuit in the array substrate and is subjected to a data voltage. Different data voltages result in different voltage differences between the pixel electrode 212 and the common electrode 222, which in turn causes the light-shielding charged particles 232 in the electrophoretic layer 23 to migrate at different speeds toward the first substrate 211, thereby achieving different display grayscale on the display panel 20.

[0092] In one exemplary embodiment, the common electrode 222 can be a light-transmitting electrode. For example, the light-transmitting electrode can be made of a transparent conductive oxide material such as indium tin oxide (ITO) or indium zinc oxide (IZO), which can make the display panel 20 more transparent.

[0093] In one exemplary embodiment, the second substrate 221 may be a light-transmitting substrate 22, such as a glass substrate, thereby enabling the reflective display device to have higher light transmittance.

[0094] Optionally, the pixel electrode 212 can be projected onto the first substrate 211, located outside the projection of the reflective layer 242 onto the first substrate 211. In this embodiment, the light-shielding charged particles 232 in the electrophoretic layer 23 are sensitive to voltage or electric field and can move rapidly under electric field or voltage; and the light-shielding charged particles 232 have light absorption capabilities. When the display panel 20 is in a bright display state, applying voltage to the pixel electrode 212 and the common electrode 222 in the display panel 20 allows the pixel electrode 212 to attract light-shielding charged particles 232, causing the light-shielding charged particles 232 in the electrophoretic layer 23 to move to the vicinity of the pixel electrode 212. At this time, the light-shielding charged particles 232 are located at the edge of the sub-pixel area. Therefore, by placing the pixel electrode 212 on the periphery of the reflective layer 242 of the light-concentrating reflective structure 24, the pixel electrode 212 and the light-shielding charged particles 232 attracted by the pixel electrode 212 can be prevented from blocking the incident light irradiating the reflective layer 242 of the light-concentrating reflective structure 24. This allows at least a portion of the incident light to irradiate the reflective layer 242 of the light-concentrating reflective structure 24. The reflective layer 242 of the light-concentrating scattering structure 25 reflects and converges the received light and reflects the light towards the corresponding scattering structure 25, thereby achieving a bright display state for the display panel 20. It can also prevent the reflective layer 242 from affecting the electric field between the pixel electrode 212 and the common electrode 222.

[0095] Please refer to Figures 12 to 14. In one optional embodiment, the reflective base 241 may further include a side surface a3 connecting the top surface a1 and the bottom surface a2. The top surface a1 may further include an annular surface a12 located around the first concave surface. The pixel electrode 212 may include a connected base electrode 2121 and an extension electrode 2122. The base electrode 2121 is connected to the first substrate 211. The extension electrode 2122 covers the side surface a3 and the annular surface a12 of the reflective base 241. The end of the extension electrode 2122 facing away from the base electrode 2121 has a first gap d1 between it and the reflective layer 242.

[0096] The base electrode 2121 and the extended electrode 2122 are interconnected to achieve electrical connection. The extended electrode 2122 increases the area of ​​the pixel electrode 212, thereby improving the ability of the pixel electrode 212 to attract light-shielding charged particles 232. This ensures that the light-shielding charged particles 232 in the electrophoretic layer 23 can all be attracted by the pixel electrode 212 and gather on the side of the pixel electrode 212 away from the first substrate 211. This avoids the situation where, when only the base electrode 2121 is present, the distance between the gathered light-shielding charged particles 232 and the base electrode 2121 is too large, resulting in a weak electric field strength between the light-shielding charged particles 232 and the base electrode 2121, and the light-shielding charged particles 232 are not densely packed. Furthermore, since at least a portion of the pixel electrode 212 is located above the reflective base 241, the influence of the reflective base 241 on the electric field distribution between the pixel electrode 212 and the common electrode 222 can be reduced.

[0097] The width of the first gap d1 is greater than or equal to 1.5 micrometers (μm), which can ensure insulation between the reflective layer 242 and the pixel electrode 212.

[0098] Referring to Figures 12 and 13, in one optional embodiment, the material of the reflective layer 242 may include a metallic material, and the reflective layer 242 and the extended electrode 2122 are co-layer structures formed by the same patterning process. The materials of the reflective layer 242 and the extended electrode 2122 can be the same, and the reflective layer 242 and the extended electrode 2122 can be formed in a single process. For example, a metallic material layer can be formed on the first substrate 211 on which the reflective base 241 is formed by magnetron sputtering or vapor deposition, and then the material layer can be patterned to form the reflective layer 242 and the extended electrode 2122.

[0099] The orthographic projection of the reflective layer 242 onto the first substrate 211 and the orthographic projection of the extended electrode 2122 onto the first substrate 211 may not overlap; that is, there is a gap between the reflective layer 242 and the extended electrode 2122, which can prevent electrical connection between the reflective layer 242 and the extended electrode 2122. In an exemplary embodiment, the reflective layer 242 and the extended electrode 2122 may be subjected to voltages of opposite polarities.

[0100] Referring to Figure 12, in one optional embodiment, the angle α between the side surface a3 and the bottom surface a2 ranges from 45° to 60°. If the angle α is greater than 60°, it will be more difficult for the extended electrode 2122 to cover the reflective base 241, increasing the risk of open circuit of the extended electrode 2122. If the angle α is less than 45°, the size of the first concave surface a11 on the reflective base 241 will be smaller, thereby reducing the reflective surface area p1 of the light-concentrating reflective structure 24, resulting in a decrease in the brightness of the display panel 20.

[0101] Referring to Figure 7, in an optional embodiment, the display panel 20 may further include a barrier structure 26, which may be located between the substrate 21 and the light-transmitting substrate 22. The barrier structure 26 divides the gap between the substrate 21 and the light-transmitting substrate 22 into a plurality of chambers 261, and the electrophoretic liquid layer 23 is located in the plurality of chambers 261. A plurality of light-concentrating and reflecting structures 24 correspond one-to-one with the plurality of chambers 261, and the orthographic projection of the light-concentrating and reflecting structure 24 on the substrate 21 is located in the orthographic projection of the corresponding chamber 261 on the substrate 21.

[0102] The barrier structure 26 can be made of insulating materials, such as polyimide, resin (e.g., any one of acrylic resin and epoxy resin), or silicon dioxide. The barrier structure 26 can be manufactured by nanoimprinting or exposure development. The barrier structure 26 can be used to prevent the migration of black microparticles between multiple chambers 261, thus avoiding uneven display caused by different numbers of black microparticles in adjacent chambers 261.

[0103] In one exemplary embodiment, the reflective base 241 and the barrier structure 26 can be manufactured in a single patterning process to simplify the manufacturing process of the display panel 20.

[0104] Referring to Figures 7 and 15, in one optional embodiment, the ratio of the area of ​​the orthographic projection of the scattering structure 25 onto the substrate 21 to the area of ​​the orthographic projection of the cavity 261 onto the substrate 21 is 10% to 30%. A cavity 261 represents a sub-pixel region of a sub-pixel on the display panel 20, and the orthographic projection of the inner wall of the cavity 261 onto the substrate 21 can be the boundary of the sub-pixel region. That is, the ratio of the area of ​​the orthographic projection of the scattering structure 25 onto the substrate 21 to the area of ​​the sub-pixel region is 10% to 30%. Within this range, the scattering structure 25 can receive reflected light emitted from the light-concentrating reflective base 241, and the scattering structure 25 has a relatively small impact on the incident light.

[0105] In one optional embodiment, in a direction perpendicular to the surface of the substrate 21, the height of the barrier structure 26 and the height of the light-concentrating and reflecting structure 24 satisfy a first relationship, which is:

[0106] Where H represents the height of the barrier structure 26 and h represents the height of the light-concentrating reflective structure 24. The heights of the barrier structure 26 and the light-concentrating reflective structure 24 can refer to the maximum height along the direction perpendicular to the surface of the substrate 21. Here, when the height h of the light-concentrating reflective structure 24 is small, the curvature of the reflective surface p1 is small, making it unable to effectively converge light, resulting in some light not reaching the scattering structure 25, affecting the display effect of the display panel 20. When the height h of the light-concentrating reflective structure 24 is large, the curvature of the reflective surface p1 can be larger, resulting in better light convergence. However, when the display panel 20 is in a dark state, due to the small distance between the light-concentrating reflective structure 24 and the common electrode 222, the angle of inclination of the electric field lines between the pixel electrode 212 and the common electrode 222 is too large, increasing the difficulty for the light-shielding charged particles 232 to accumulate on the pixel electrode 212, that is, affecting the adhesion speed and effect of the light-shielding charged particles 232 on the pixel electrode 212. Therefore, setting the height of the barrier structure 26 and the height of the light-concentrating and reflecting structure 24 to satisfy the above relationship can better improve the reflection efficiency and ensure a better adhesion speed and adhesion effect of the light-shielding charged particles 232. For example, the height H of the barrier structure 26 in the direction perpendicular to the surface of the substrate 21 ranges from 10 μm to 100 μm.

[0107] Referring to Figure 4, in one optional embodiment, a sealing groove is provided between two adjacent reflective bases 241. In a direction parallel to the surface of the substrate 21, the width of the sealing groove and the thickness of the retaining wall structure 26 satisfy a second relationship, which is:

[0108] d≥D+3(μm).

[0109] Where d is the width of the sealing groove, D is the thickness of the barrier structure 26, and 3μm is the alignment deviation between the substrate 21 and the light-transmitting substrate 22, so as to ensure that one end of the barrier structure 26 can be smoothly placed in the sealing groove.

[0110] The thickness D of the barrier structure 26 ranges from 5 μm to 30 μm. For example, the thickness D of the barrier structure 26 is greater than 5 μm and less than 10 μm. The smaller the thickness D of the barrier structure 26, the higher the aperture ratio of the display panel 20 and the greater the display brightness of the display panel 20. However, if the thickness of the barrier structure 26 is too small, the probability of the barrier structure 26 tipping over will increase.

[0111] In one optional embodiment, the center of the orthographic projection of the scattering structure 25 onto the substrate 21 coincides with the center of the orthographic projection of the corresponding focusing and reflecting structure 24 onto the substrate 21. This reduces the path length of the light reflected from the focusing and reflecting structure 24 to the scattering structure 25, thereby improving the efficiency of the scattering structure 25 in receiving the light reflected from the focusing and reflecting structure 24. The center of the orthographic projection of the scattering structure 25 onto the substrate 21 coincides with the geometric center of the corresponding sub-pixel region. The shape of the orthographic projection of the scattering structure 25 onto the substrate 21 can be at least one of a rectangle, a triangle, and a circle.

[0112] Referring to Figure 7, in one optional embodiment, the light-transmitting substrate 22 may include a second substrate 221 and a common electrode 222. The common electrode 222 may be located between the second substrate 221 and the electrophoretic layer 23, and the scattering structure 25 may be located between the common electrode 222 and the second substrate 221. Since the second substrate 221 can support and protect the scattering structure 25, the scattering structure 25 may only include a diffusion functional film layer, eliminating the need for a support layer and an anti-scratch layer, thus giving the scattering structure 25 better transmittance. For example, the transmittance of the scattering structure 25 may be greater than 90%.

[0113] The scattering structure 25 may include a diffusion film substrate and multiple scattering particles dispersed in the diffusion film substrate. When light passes through the diffusion functional film layer, it will continuously pass through two media with different refractive indices, so that the light can undergo multiple refractions, reflections and scattering to form an optical diffusion effect.

[0114] Referring to Figure 16, in one optional embodiment, the display panel 20 further includes a first insulating layer 27. The first insulating layer 27 may be located between the pixel electrode 212 and the electrophoretic liquid layer 23. Simultaneously, the first insulating layer 27 may be located between the light-concentrating reflective structure 24 and the electrophoretic liquid layer 23. By providing the first insulating layer 27, direct contact between the pixel electrode 212 and the light-shielding charged particles 232, preventing electrochemical corrosion that could affect the lifespan of the display panel 20, is avoided. Similarly, direct contact between the reflective layer 242 in the light-concentrating reflective structure 24 and the light-shielding charged particles 232, preventing electrochemical corrosion that could affect the lifespan of the display panel 20, is also avoided.

[0115] Referring to Figure 17, based on the display panel 10 shown in Figure 10, the display panel 10 further includes a reflective pillar 115 corresponding to at least one of the plurality of lenses in the lens structure 112, and a reflective film 116 located on the side of the reflective pillar 115 near the second substrate 109. The refractive index of the reflective film 116 can be less than the refractive index of the electrophoretic layer 106. The reflective film 116 is configured to reflect a portion of the light emitted from the lens structure 112 towards the direction closer to the first substrate 101. In this way, light leakage from the lens structure 112 fabricated on the second substrate 109 can be reflected and utilized again, thereby improving the bright-state reflectivity of the reflective display panel 10. However, the larger the volume of the reflective pillar 115 and the reflective film 116, the smaller the filling space of the electrophoretic liquid layer 106. The reflective pillar 115 is located on the side of the second electrode 108 away from the first substrate 101. The reflective pillar 115 has an impact on the electric field distribution in the cavity of the entire baffle structure 107. The larger the volume of the reflective pillar 115 and the reflective film 116, the greater the voltage driving the black microparticles in the electrophoretic liquid layer 106. Therefore, the reflective pillar 115 and the reflective film 116 in the display panel 10 need to be as small as possible while satisfying secondary reflection, so as to reduce the space occupied by the reflective pillar 115 and the reflective film 116 in the cavity of the baffle structure 107 and reduce the driving power of the display panel 10.

[0116] Compared to the display panel 10 shown in Figure 17, this embodiment of the application achieves the bright state display of the display panel 20 through a light-concentrating reflective structure 24 (including a reflective base 241 and a reflective layer 242). In this embodiment, since the larger the reflective surface p1 of the light-concentrating reflective structure 24 is, the higher the brightness of the bright state display of the display panel 20, the larger the ratio of the area of ​​the orthogonal projection of the light-concentrating reflective structure 24 on the substrate 21 to the area of ​​the entire sub-pixel region, the better. Furthermore, in this embodiment, the extended electrode 2122 in the pixel electrode 212 is located on the side of the reflective base 241 away from the first substrate 211. When the light-shielding charged particles 232 in the electrophoretic liquid layer 23 are driven by the pixel electrode 212, they are not affected by the light-concentrating reflective structure 24, which can reduce the driving power of the display panel 20.

[0117] In summary, this application provides a display panel comprising a substrate, a transparent substrate, an electrophoretic layer, multiple light-concentrating and reflecting structures, and corresponding multiple scattering structures. The light-concentrating and scattering structures reflect and converge light incident on the display panel, guiding the reflected light to the corresponding scattering structures so that the reflected light passes through the scattering structures and exits the display panel. The scattering structures can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby enhancing the display effect of the display panel. Furthermore, the area of ​​the orthographic projection of the scattering structure onto the substrate can be smaller than the area of ​​the orthographic projection of the light-concentrating and reflecting structure onto the substrate, so that at least a portion of the light incident on the light-concentrating and reflecting structure does not need to pass through the scattering structures, reducing light loss, improving the reflection efficiency of the display panel, and further enhancing the display effect of the display panel.

[0118] Figure 18 is a flowchart of a manufacturing method for a display panel 20 according to an embodiment of this application. Please refer to Figure 18. This method can be used to manufacture the display panel 20 in any of the above embodiments, and the method may include:

[0119] Step 301: Form multiple light-concentrating and reflective structures on the substrate.

[0120] Step 302: On the side of the multiple light-concentrating and reflecting structures away from the substrate, a stacked electrophoretic liquid layer, multiple scattering structures, and a light-transmitting substrate are disposed.

[0121] The electrophoretic layer 23 includes a dispersion medium 231 and a plurality of light-shielding charged particles 232 located in the dispersion medium 231. A plurality of light-concentrating reflective structures 24 and a plurality of scattering structures 25 are corresponding. The light-concentrating reflective structures 24 are located between the substrate 21 and the electrophoretic layer 23. The scattering structures 25 are located on the side of the electrophoretic layer 23 away from the substrate 21. The light-concentrating reflective structures 24 are used to receive at least a portion of the light transmitted through the light-transmitting substrate 22 and reflect the received light toward the corresponding scattering structure 25. At least a portion of the orthogonal projection of the reflective structure onto the substrate 21 is located outside the orthogonal projection of the corresponding scattering structure 25 onto the substrate 21.

[0122] In summary, this application provides a method for manufacturing a display panel. The display panel includes a substrate, a light-transmitting substrate, an electrophoretic layer, multiple light-concentrating and reflecting structures, and corresponding multiple scattering structures. The light-concentrating and scattering structures reflect and converge light incident on the display panel, and guide the reflected light to the corresponding scattering structures so that the reflected light passes through the scattering structures and exits the display panel. The scattering structures can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby enhancing the display effect of the display panel. Furthermore, the area of ​​the orthographic projection of the scattering structure onto the substrate can be smaller than the area of ​​the orthographic projection of the light-concentrating and reflecting structure onto the substrate, so that at least a portion of the light incident on the light-concentrating and reflecting structure does not need to pass through the scattering structures, reducing light loss and improving the reflection efficiency of the display panel, thereby further enhancing the display effect of the display panel.

[0123] Figure 19 is a flowchart of a manufacturing method for a display panel 20 according to an embodiment of this application. Please refer to Figure 19. This method can be used to manufacture the display panel 20 in any of the above embodiments, and the method may include:

[0124] Step 401: Obtain the first substrate.

[0125] The first substrate 211 can be an array substrate, which can include pixel driving circuits arranged in an array. The pixel driving circuit can include driving transistors, and the active layer of the driving transistor can be made of amorphous silicon (a-Si), polycrystalline silicon (p-Si), or metal oxide.

[0126] Step 402: Forming a plurality of base electrodes on the first substrate.

[0127] Multiple pixel electrodes 212 can be electrically connected to a pixel driving circuit. Referring to Figure 20, as shown in s1 of Figure 20, the base electrode 2121 is located on the first substrate 211.

[0128] Step 403: Form a reflective base on a first substrate on which multiple base electrodes are formed.

[0129] The reflective base 241 can be manufactured using nanoimprint lithography. Optionally, the material of the reflective base 241 may include at least one of acrylic resin and epoxy resin. As shown in s2 of FIG20, a sealing groove is provided between two adjacent reflective bases 241. The reflective base 241 may include an opposing top surface a1 and a bottom surface a2, with the top surface a1 located on the side of the bottom surface a2 facing away from the substrate 21, and the top surface a1 including a first concave surface a11 recessed toward the substrate 21. The reflective base 241 may also include a side surface a3 connecting the top surface a1 and the bottom surface a2, and the top surface a1 may also include an annular surface a12 located around the first concave surface.

[0130] Step 404: Form a reflective layer and an extended electrode on the first substrate on which the reflective base is formed.

[0131] A metal material layer can be formed on the first substrate 211 on which the reflective base 241 is formed using magnetron sputtering or vapor deposition. Then, a patterning process is performed on the metal material layer to form the reflective layer 242 and the extended electrode 2122. As shown in s3 of Figure 20, the reflective layer 242 can cover the first concave surface a11 of the reflective base 241, and the extended electrode 2122 covers the side surface a3 and the annular surface a12 of the reflective base 241. The extended electrode 2122 can be electrically connected to the base electrode 2121 to form a pixel electrode 212. A first gap d1 exists between the end of the extended electrode 2122 facing away from the base electrode 2121 and the reflective layer 242.

[0132] The patterning process in the embodiments of this application may include at least one of the following: photoresist coating, exposure, development, etching, and photoresist stripping.

[0133] Step 405: Obtain the second substrate.

[0134] The second substrate 221 can be made of materials such as glass, silicon wafer, quartz or plastic.

[0135] Step 406: Form a scattering structure on the second substrate.

[0136] After forming a scattering functional material layer on the second substrate 221, a patterning process can be performed on the scattering functional material layer to form a scattering structure 25. The area of ​​the scattering structure 25 can be 10% to 30% of the sub-pixel area. Please refer to Figure 21. As shown in s4 of Figure 21, the scattering structure 25 is located on the second substrate 221.

[0137] Step 407: Form a planarization layer and a common electrode on the second substrate with the scattering structure.

[0138] The planarization layer can be a transparent planarization layer, and the common electrode 222 can be a monolithic structure. The material of the common electrode 222 can include ITO. As shown in s5 of Figure 21, the common electrode 222 is located on the side of the scattering structure 25 away from the second substrate 221.

[0139] Step 408: Form a barrier structure on the second substrate on which the common electrode is formed.

[0140] The barrier structure 26 can be fabricated by nanoimprinting or exposure and development. As shown in s6 in Figure 21, the barrier structure 26 is located on the side of the common electrode 222 that is away from the second substrate 221.

[0141] Step 409: Cover the first substrate with the reflective layer and the extended electrode with the second substrate having the barrier structure, and fill the space between the first substrate and the second substrate with electrophoretic solution to form an electrophoretic solution layer.

[0142] One end of the barrier structure 26 can be placed in a sealing groove between two adjacent reflective bases 241. The electrophoretic layer 23 may include a dispersion medium 231 and a plurality of light-shielding charged particles 232 located in the dispersion medium 231, which may be black microparticles. The dispersion medium 231 may include isoparaffin. In this way, the display panel 20 shown in FIG4 can be formed.

[0143] In summary, this application provides a method for manufacturing a display panel. The display panel includes a substrate, a light-transmitting substrate, an electrophoretic layer, multiple light-concentrating and reflecting structures, and corresponding multiple scattering structures. The light-concentrating and scattering structures reflect and converge light incident on the display panel, and guide the reflected light to the corresponding scattering structures so that the reflected light passes through the scattering structures and exits the display panel. The scattering structures can expand the illumination area of ​​the emitted light and improve the visual uniformity of the emitted light, thereby enhancing the display effect of the display panel. Furthermore, the area of ​​the orthographic projection of the scattering structure onto the substrate can be smaller than the area of ​​the orthographic projection of the light-concentrating and reflecting structure onto the substrate, so that at least a portion of the light incident on the light-concentrating and reflecting structure does not need to pass through the scattering structures, reducing light loss and improving the reflection efficiency of the display panel, thereby further enhancing the display effect of the display panel.

[0144] Furthermore, this application also provides a display device, which includes: a display panel as described in any of the above embodiments, and a power supply component for supplying power to the display panel. In an exemplary embodiment, the display device can be any product or component with display functionality, such as a mobile phone, tablet computer, television, monitor, laptop computer, or navigator.

[0145] In this application, the term "at least one of A and B" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, "at least one of A and B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0146] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0147] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0148] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: Opposite substrate and light-transmitting substrate, and an electrophoretic liquid layer located between the substrate and the light-transmitting substrate, the electrophoretic liquid layer including a dispersion medium and a plurality of light-shielding charged particles located in the dispersion medium; Multiple light-concentrating and reflecting structures and corresponding multiple scattering structures are provided. The light-concentrating and reflecting structures are located between the substrate and the electrophoretic liquid layer, and the scattering structures are located on the side of the electrophoretic liquid layer away from the substrate. The light-concentrating and reflecting structures are used to receive at least a portion of the light transmitted through the light-transmitting substrate and reflect the received light toward the corresponding scattering structure. At least a portion of the orthogonal projection of the light-concentrating reflective structure onto the substrate lies outside the orthogonal projection of the corresponding scattering structure onto the substrate.

2. The display panel according to claim 1, characterized in that, The light-concentrating reflective structure has a reflective surface on the side near the scattering structure, and the reflective surface is a concave reflective surface that is recessed towards the substrate.

3. The display panel according to claim 1, characterized in that, The light-concentrating reflective structure includes a reflective base and a reflective layer located on the side of the reflective base facing away from the substrate. The reflective base includes a top surface and a bottom surface opposite each other, the top surface being located on the side of the bottom surface away from the substrate, and the top surface including a first concave surface recessed toward the substrate. The reflective layer is located on the first concave surface, and the side of the reflective layer facing away from the reflective base is the concave reflective surface.

4. The display panel according to claim 3, characterized in that, The substrate includes a first substrate and a pixel electrode, the pixel electrode being located between the electrophoretic liquid layer and the first substrate, the first substrate including a pixel circuit, and the pixel circuit being electrically connected to the pixel electrode; The orthographic projection of the pixel electrode on the first substrate is located outside the orthographic projection of the reflective layer on the first substrate.

5. The display panel according to claim 4, characterized in that, The reflective base also includes a side surface connecting the top surface and the bottom surface, and the top surface also includes an annular surface located around the first concave surface; The pixel electrode includes a connected base electrode and an extended electrode. The base electrode is connected to the first substrate, and the extended electrode covers the side and annular surface of the reflective base. The end of the extended electrode opposite to the base electrode has a first gap with the reflective layer.

6. The display panel according to claim 5, characterized in that, The reflective layer is made of metallic materials, and the reflective layer and the extended electrode are co-layered structures formed by the same patterning process.

7. The display panel according to claim 5, characterized in that, The angle between the side surface and the bottom surface ranges from 45° to 60°.

8. The display panel according to claim 1, characterized in that, The display panel further includes a barrier structure located between the substrate and the light-transmitting substrate; The barrier structure divides the gap between the substrate and the light-transmitting substrate into multiple chambers, and the electrophoretic liquid layer is located in the multiple chambers. The plurality of light-concentrating and reflective structures correspond one-to-one with the plurality of chambers, and the orthogonal projection of the light-concentrating and reflective structure on the substrate is located in the orthogonal projection of the corresponding chamber on the substrate.

9. The display panel according to claim 8, characterized in that, The ratio of the area of ​​the scattering structure projected onto the substrate to the area of ​​the cavity projected onto the substrate is 10% to 30%.

10. The display panel according to claim 8, characterized in that, In a direction perpendicular to the surface of the substrate, the height of the barrier structure and the height of the light-concentrating and reflecting structure satisfy a first relationship, which is: Wherein, H is the height of the retaining wall structure, and h is the height of the light-concentrating and reflecting structure.

11. The display panel according to claim 1, characterized in that, The center of the orthogonal projection of the scattering structure onto the substrate coincides with the center of the orthogonal projection of the corresponding focusing and reflecting structure onto the substrate.

12. The display panel according to claim 1, characterized in that, The light-transmitting substrate includes a second substrate and a common electrode, the common electrode being located between the second substrate and the electrophoretic liquid layer, and the scattering structure being located between the common electrode and the second substrate.

13. The display panel according to claim 3, characterized in that, The material of the reflective base includes at least one of acrylic resin and epoxy resin.

14. A method for manufacturing a display panel, characterized in that, The method includes: Multiple light-concentrating and reflective structures are formed on the substrate. A stacked electrophoretic liquid layer, multiple scattering structures, and a light-transmitting substrate are disposed on the side of the plurality of light-concentrating and reflective structures away from the substrate. The electrophoretic liquid layer includes a dispersion medium and a plurality of light-shielding charged particles located in the dispersion medium. The plurality of light-concentrating reflective structures and the plurality of scattering structures correspond to each other. The light-concentrating reflective structures are located between the substrate and the electrophoretic liquid layer. The scattering structures are located on the side of the electrophoretic liquid layer away from the substrate. The light-concentrating reflective structures are used to receive at least a portion of the light transmitted through the light-transmitting substrate and reflect the received light toward the corresponding scattering structure. At least a portion of the orthographic projection of the reflective structure on the substrate is located outside the orthographic projection of the corresponding scattering structure on the substrate.

15. A display device, characterized in that, The display device includes the display panel according to any one of claims 1 to 13.

Images