Display panel, preparation method of display panel and display device

Abstract

The embodiment of the invention discloses a display panel, a preparation method of the display panel and a display device. The display panel comprises a display panel substrate, a light-emitting element, a plurality of touch electrodes, a plurality of shading structures and a filter layer. The light-emitting element is located on one side of the substrate. The touch electrodes and the shading structures are at least partially overlapped in the thickness direction of the substrate, and the touch electrodes and the shading structures are located on the sides, away from the substrate, of the light-emitting elements. The light filtering layer is located on the side, away from the light emitting element, of the touch electrode and comprises multiple light filtering structures of different colors, and the light shading structure is at least partially overlapped with the junction area of the two adjacent light filtering structures of different colors in the thickness direction of the substrate. In the embodiment of the invention, the touch electrode and the shading structure can be simultaneously prepared and formed in the same process, so that the preparation process of the display panel is reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] In recent years, with the rapid growth of the display industry, the requirements for the display quality of display panels have become increasingly higher. As the display quality of display panels improves, the structure of display panels also becomes more complex, resulting in a more complicated manufacturing process. Summary of the Invention

[0003] This invention provides a display panel, a method for manufacturing the display panel, and a display device. By simultaneously manufacturing the touch electrode and the light-shielding structure in the same process, the manufacturing process of the display panel is reduced, thereby lowering production costs.

[0004] In a first aspect, embodiments of the present invention provide a display panel, comprising:

[0005] Substrate;

[0006] A light-emitting element is located on one side of the substrate;

[0007] Multiple touch electrodes and multiple light-shielding structures are provided. Along the thickness direction of the substrate, the touch electrodes and the light-shielding structures at least partially overlap, and both the touch electrodes and the light-shielding structures are located on the side of the light-emitting element away from the substrate.

[0008] A filter layer, located on the side of the touch electrode away from the light-emitting element, includes filter structures of various colors; along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region of two adjacent filter structures of different colors.

[0009] Secondly, embodiments of the present invention also provide another display panel, including;

[0010] Substrate;

[0011] A light-emitting element is located on one side of the substrate;

[0012] Multiple touch electrodes are located on the side of the light-emitting element away from the substrate;

[0013] A filter layer is located on the side of the touch electrode away from the light-emitting element, and includes filter structures of various colors; along the thickness direction of the substrate, the interface region of the touch electrode and two adjacent filter structures of different colors at least partially overlaps.

[0014] Thirdly, embodiments of the present invention provide a method for manufacturing a display panel, used to manufacture any of the display panels described in the first aspect, the method comprising:

[0015] Provide substrate;

[0016] A light-emitting element is fabricated on one side of the substrate;

[0017] A plurality of touch electrodes and a plurality of light-shielding structures are formed on the side of the light-emitting element away from the substrate, wherein the touch electrodes and the light-shielding structures at least partially overlap along the thickness direction of the substrate;

[0018] A filter layer is prepared on the side of the touch electrode away from the light-emitting element. The filter layer includes filter structures of various colors. Along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region of two adjacent filter structures of different colors.

[0019] Fourthly, embodiments of the present invention also provide another method for preparing a display panel, used to prepare any of the display panels described in the second aspect, the method comprising:

[0020] Provide substrate;

[0021] A light-emitting element is fabricated on one side of the substrate;

[0022] Multiple touch electrodes are formed on one side of the light-emitting element;

[0023] A filter layer is prepared on the side of the touch electrode away from the light-emitting element. The filter layer includes filter structures of various colors. Along the thickness direction of the substrate, the interface region between the touch electrode and two adjacent filter structures of different colors at least partially overlaps.

[0024] Fifthly, embodiments of the present invention also provide a display device, which includes the display panel described in the first and second aspects.

[0025] In the display panel provided by this invention, the touch electrode and the light-shielding structure are located on the side of the light-emitting element away from the substrate, and the touch electrode and the light-shielding structure at least partially overlap along the thickness direction of the display panel. Therefore, when fabricating the touch electrode and the light-shielding structure, the mask for the touch electrode is reused as the mask for the light-shielding structure, allowing for the simultaneous fabrication of the touch electrode and the light-shielding structure in the same process flow. This reduces the number of fabrication steps for the display panel and thus lowers production costs. Furthermore, along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region of two adjacent filter structures of different colors, thereby ensuring that the light-shielding structure can prevent crosstalk between two adjacent light-emitting elements of different colors while reducing the number of fabrication steps. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 A schematic diagram of a cross-section along the A-A' direction;

[0028] Figure 3 yes Figure 1 Another cross-sectional view along the A-A' direction;

[0029] Figure 4 yes Figure 1 Another cross-sectional diagram along the A-A' direction;

[0030] Figure 5 yes Figure 1 A schematic diagram of a cross-section along the B-B' direction;

[0031] Figure 6 yes Figure 1 Another cross-sectional diagram along the A-A' direction;

[0032] Figure 7 This is a schematic diagram of another display panel structure provided in an embodiment of the present invention;

[0033] Figure 8 yes Figure 1 Another cross-sectional diagram along the A-A' direction;

[0034] Figure 9 yes Figure 1 A schematic diagram of a cross-section along the C-C' direction;

[0035] Figure 10 yes Figure 1 Another cross-sectional view along the C-C' direction;

[0036] Figure 11 yes Figure 1 Another cross-sectional diagram along the C-C' direction;

[0037] Figure 12 yes Figure 1 Another cross-sectional diagram along the C-C' direction;

[0038] Figure 13 This is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present invention;

[0039] Figure 14 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0040] Figure 15This is a process flow diagram of a method for manufacturing a display panel according to an embodiment of the present invention;

[0041] Figure 16 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0042] Figure 17 This is a process flow diagram of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0043] Figure 18 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0044] Figure 19 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0045] Figure 20 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention;

[0046] Figure 21 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be fully described below with reference to the accompanying drawings in the embodiments of this invention, through specific implementation methods. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort fall within the protection scope of this invention.

[0048] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 2 yes Figure 1 A schematic diagram of a cross-section along the A-A' direction. See also... Figure 1 and Figure 2 The display panel includes a substrate 10, a light-emitting element 20, a plurality of touch electrodes 30, a plurality of light-shielding structures 40, and a light filter layer 50. The light-emitting element 20 is located on one side of the substrate 10. Along the thickness direction of the substrate 10, the touch electrodes 30 and the light-shielding structures 40 at least partially overlap, and both the touch electrodes 30 and the light-shielding structures 40 are located on the side of the light-emitting element 20 away from the substrate 10.

[0049] The filter layer 40 is located on the side of the touch electrode 30 away from the light-emitting element 20, and includes filter structures 510 of various colors. Along the thickness direction of the substrate 10, the light-shielding structure 40 overlaps at least partially with the boundary region S1 of two adjacent filter structures 510 of different colors.

[0050] Specifically, such as Figure 1 As shown, the display panel includes a display area AA, which includes multiple sub-pixels 01. Each sub-pixel 01 may include a first sub-pixel, a second sub-pixel, and a third sub-pixel with different emission colors. The first, second, and third sub-pixels are arranged in an array. Figure 2 As shown, sub-pixel 01 includes a light-emitting element 20 and a pixel driving circuit 02. The light-emitting element 20 is electrically connected to the pixel driving circuit 02, which provides a driving signal to the light-emitting element 20 to drive it to emit light, thereby realizing the display of the image in display area AA. The display panel also includes an encapsulation layer 03 and a touch electrode 30. The encapsulation layer 03 covers the side of the light-emitting element 20 away from the substrate 10 to isolate moisture and oxygen, thus protecting the light-emitting element 20. The touch electrode 30 is disposed on the side of the encapsulation layer 03 away from the light-emitting element 20 and is used to realize the touch function of the display panel. In addition, the display panel also includes a light filter layer 50 located on the side of the touch electrode 30 away from the light-emitting element 20, wherein the light filter layer 50 includes multiple light filter structures 510 of different colors. For example, the multiple light filter structures 510 of different colors may include a red light filter structure, a green light filter structure, and a blue light filter structure. Along the thickness direction of the substrate 10, the red light filter structure overlaps at least partially with the red light emitting element, the green light filter structure overlaps at least partially with the green light emitting element, and the blue light filter structure overlaps at least partially with the blue light emitting element. Thus, the filter structure 510 allows light of the corresponding color to pass through and blocks light of other colors, making the emitted color more accurate and the display saturation higher.

[0051] Furthermore, during the display's emission, due to light scattering and refraction, light crosstalk can occur between two adjacent light-emitting elements 20 with different emitting colors. This means that the colored light emitted by one light-emitting element 20 enters the emission area of ​​the other, resulting in poor contrast in the displayed image. Therefore, a light-shielding structure 40 is provided at the boundary region S1 between the two adjacent filter structures 510 with different colors. Specifically, along the thickness direction of the substrate 10, the light-shielding structure 40 at least partially overlaps with the boundary region S1. The light-shielding structure 40 absorbs the reflected light from the light-emitting elements 20, thereby improving display contrast. Furthermore, the light-shielding structure 40 can also absorb reflected light from ambient light and reflected light from the metal traces in the display panel, further ensuring the display effect of the display panel. The boundary region S1 can be understood as the effective shielding area of ​​the light-shielding structure 40. Within the boundary region S1, the light-shielding structure 40 can effectively absorb the reflected light from two adjacent light-emitting elements 20 with different emitting colors, while also ensuring that the arrangement of the light-shielding structure 40 does not make the emitting area of ​​the light-emitting element 20 too small, thus affecting the normal display of the display panel. In one embodiment, the boundary region S1 can extend 2.5 μm to each side from the boundary between two adjacent light-shielding structures 40. It is understood that this embodiment of the invention only provides a set of data as an example for illustration, but does not limit the scope. In actual settings, those skilled in the art can design the range of the overlapping region S1 based on the vertical distance between the filter structure 510 and the light-emitting element 20, as well as the size of the emitting area of ​​the light-emitting element 20.

[0052] In existing technologies, fabricating a light-shielding structure and a light-filtering layer on a touch electrode requires four masking processes. For example, when the light-filtering layer includes a red light filter structure, a green light filter structure, and a blue light filter structure, a masking process is first used to fabricate the light-shielding structure on one side of the touch electrode, followed by three masking processes to fabricate the red light filter structure, green light filter structure, and blue light filter structure between the light-shielding structures, respectively. This results in a complex and costly display panel fabrication process. Therefore, in this embodiment of the invention, when fabricating the touch electrode 30, the mask of the touch electrode 30 is reused as the mask of the light-shielding structure 40. That is, a single masking process is used to fabricate the touch electrode 30 and the light-shielding structure 40 in the same process flow. At this time, the simultaneously fabricated touch electrode 30 and light-shielding structure 40 at least partially overlap along the thickness direction of the substrate 10. Therefore, there is no need to use a separate masking process to prepare the light-shielding structure 40, which can reduce one masking process, reduce the manufacturing process of the display panel, and thus reduce the production cost of the display panel.

[0053] It should be noted that, Figure 2In the embodiments shown, the light-shielding structure 40 is only illustrated by taking the contact between the light-shielding structure 40 and the touch electrode 30 as an example. In other embodiments, the light-shielding structure 40 may not be in contact with the touch electrode 30. The present invention does not limit this, as long as the light-shielding structure 40 and the touch electrode 30 are prepared in the same process.

[0054] In summary, in the display panel provided by the embodiments of the present invention, both the touch electrode and the light-shielding structure are located on the side of the light-emitting element away from the substrate, and the touch electrode and the light-shielding structure at least partially overlap along the thickness direction of the substrate. Therefore, when fabricating the touch electrode and the light-shielding structure, the mask for the touch electrode can be reused as the mask for the light-shielding structure, allowing for the simultaneous fabrication of both in the same process flow. This eliminates the need for a separate masking process to fabricate the light-shielding structure, reducing one masking step and the number of fabrication steps for the display panel, thereby lowering production costs.

[0055] Optionally, based on the above embodiments, see also... Figure 2 The light-shielding structure 40 includes a light-shielding edge 40A, and the touch electrode 30 includes an electrode edge 30A. The light-shielding edge 40A and the electrode edge 30A are located on the same side of the boundary region S1 of two adjacent filter structures 510 with different colors. The distance between the light-shielding edge 40A and the boundary region S1 of the two adjacent filter structures 510 with different colors is L1, and the distance between the electrode edge 30A and the boundary region S1 of the two adjacent filter structures 510 with different colors is L2, wherein |L1-L2|L1≤10%.

[0056] Specifically, such as Figure 2 In the illustrated embodiment, the light-shielding structure 40 includes two light-shielding edges 40A on the left and right sides, which are located on different sides of the boundary region S1 of two adjacent filter structures 510 with different colors. The touch electrode 30 includes two electrode edges 30A on the left and right sides, which are located on different sides of the boundary region S1 of two adjacent filter structures 510 with different colors. Since the light-shielding structure 40 and the touch electrode 30 are fabricated simultaneously in the same process, on the same side of the boundary region S1 of two adjacent filter structures 510 with different colors, the light-shielding edge 40 of the light-shielding structure 40 and the electrode edge 30A of the touch electrode 30 are approximately flush along the thickness direction of the substrate 10. In other words, the distance L1 between the light-shielding edge 40A and the boundary region S1 of two adjacent filter structures 510 with different colors, and the distance L2 between the electrode edge 30A and the boundary region S1 of two adjacent filter structures 510 with different colors, satisfy |L1-L2|L1≤10%.

[0057] Optionally, based on the above embodiments, see also...Figure 2 The material of the light-shielding structure 40 includes black photoresist, and the touch electrode 30 and the light-shielding structure 40 are in contact.

[0058] For example, such as Figure 2 In the illustrated embodiment, the touch electrode 30 includes a first surface away from the substrate 10, and a light-shielding structure 40 is disposed on the first surface in contact with the touch electrode 30. Specifically, when fabricating the touch electrode 30 and the light-shielding structure 40, a full-layer touch layer can be first fabricated on the side of the encapsulation layer 03 away from the light-emitting element 20, and a full-layer black photoresist layer can be formed on the side of the full-layer touch layer away from the substrate 10. Then, the touch layer and the black photoresist layer are simultaneously etched using the same mask, finally forming a stacked structure of the touch electrode 30 and the light-shielding structure 40. In this embodiment of the invention, the black photoresist serves as a "mask" for the touch electrode 30. Specifically, after fabricating the full-layer touch layer and the black photoresist layer, light of a specific wavelength (such as ultraviolet light) is used to irradiate the black photoresist through a mask etched with a target pattern, causing a change in the chemical properties of the areas of the black photoresist irradiated by the light. When rinsing with a chemical developer, the areas of the black photoresist that are exposed to light or not exposed to light are dissolved by the chemical developer, thereby forming a target pattern (i.e., the pattern of the light-shielding structure 40) on the black photoresist that is identical to the mask. The undissolved portions of the black photoresist are then cured to form a "mask" for the touch layer. An etchant for the touch layer is then used to etch away the areas of the touch layer not protected by the black photoresist, thereby forming multiple touch electrodes 30. On the other hand, the black photoresist is also reused as the light-shielding structure 40. That is, after forming the touch electrodes 30, the existing technology uses a specific solvent or plasma to remove all residual photoresist on the touch electrodes 30, and then uses a new masking process and other related processes to prepare the light-shielding structure. In this case, after etching to form the touch electrode 30, the black photoresist on the touch electrode 30 is retained. The black photoresist overlapping with the touch electrode 30 serves as the light-shielding structure 40 to prevent crosstalk between two adjacent light-emitting elements 20 with different emission colors. Furthermore, in this embodiment of the invention, the photoresist used to prepare the touch electrode 30 is set to black photoresist. Throughout the process, this black photoresist not only serves as a mask for forming the pattern of the touch electrode 30 but is also reused as the light-shielding structure 40 to prevent crosstalk between two adjacent light-emitting elements 20 with different emission colors. This eliminates the need for a separate masking process to prepare the light-shielding structure, reducing one masking step and the number of steps in the display panel manufacturing process, thereby lowering production costs.

[0059] It should be noted that, in this embodiment of the invention, in order to ensure that the light-shielding structure 40 can play the role of preventing crosstalk, the height of the light-shielding structure 40 (i.e., the distance between the second surface of the light-shielding structure 40 and the substrate 10) needs to be adjusted according to the distance between the second surface of the light-shielding structure 40 away from the substrate 10 and the light-emitting surface of the light-emitting element, and the opening area of ​​the light-emitting area of ​​the light-emitting element 20. This invention does not limit this, and those skilled in the art can set it as needed.

[0060] Optionally, in yet another embodiment, see also [link to previous document]. Figure 2 The display panel also includes a first planarization layer 60, and the touch electrode 30 and the light-shielding structure 40 are both located in the first planarization layer 60.

[0061] For example, such as Figure 3 In the illustrated embodiment, since the touch electrode 30 and the light-shielding structure 40 are fabricated simultaneously using the same masking process, and the material of the light-shielding structure 40 includes black photoresist, both the touch electrode 30 and the light-shielding structure 40 are located within the first planarization layer 60. That is, in this embodiment, after simultaneously fabricating the touch electrode 30 and the light-shielding structure 40, an inorganic material is deposited on the side of the light-shielding structure 40 away from the substrate 10 to form the first planarization layer 60. This facilitates the fabrication of multiple filter structures 510 on the side of the first planarization layer 60 away from the substrate 10. In contrast, in the prior art, since the touch electrode 30 and the light-shielding structure 40 require separate masking processes, after fabricating multiple touch electrodes 30, an inorganic material needs to be deposited on the side of the touch electrode 30 away from the substrate 10 to form a planarization layer. In the prior art, the touch electrode is located within the planarization layer, and the light-shielding structure is located on the side of the planarization layer away from the substrate. This difference is a structural difference resulting from the difference in fabrication processes.

[0062] Optional, Figure 1 yes Figure 1 Another cross-sectional diagram along the A-A' direction, see [link / reference]. Figure 3 and Figure 3 The surface of the light-shielding structure 40 away from the touch electrode 30 is in contact with the filter layer 50.

[0063] For example, such as Figure 4 In the embodiment shown, along the thickness direction of the display panel, the boundary region S1 of the light-shielding structure 40 and two adjacent filter structures 510 of different colors at least partially overlaps, and the surface of the light-shielding structure 40 away from the touch electrode 30 contacts the surface of the filter structure 510 near the substrate 10, thereby preventing the light emitted by the light-emitting element 20 from being reflected or scattered and entering the other light-emitting element 20 through the gap between the light-shielding structure 40 and the filter structure 510, further improving the anti-crosstalk effect of the light-shielding structure 40.

[0064] Optionally, based on the above embodiments, Figure 1 yes Figure 1 Another schematic diagram of a cross-section along the A-A' direction. See also... Figure 4 and Figure 3 The filter layer 50 is provided with a groove S2, the opening direction of the groove S2 is the direction of the filter structure 510 toward the substrate 10, and at least part of the light-shielding structure 40 is located in the groove S2.

[0065] Specifically, in one embodiment, such as Figure 4 As shown, the surface of the light-shielding structure 40 away from the touch electrode 30 is flush with the surface of the filter structure 510 near the touch electrode 30, thereby achieving contact between the surface of the light-shielding structure 40 away from the touch electrode 30 and the filter layer 50. However, in other embodiments, such as Figure 5 As shown, a groove S2 is provided in the boundary region S1 of two adjacent filter structures 510 with different colors. The groove S2 is located on the surface of the boundary region S1 near the touch electrode 30, that is, the opening direction of the groove S2 faces the substrate 10, thereby accommodating part of the light-shielding structure 40, so that the surface of the light-shielding structure 40 away from the touch electrode 30 contacts the filter layer 50. In this way, since part of the light-shielding structure 40 is located in the filter structure 510, the anti-crosstalk effect of the filter structure 510 can be further improved.

[0066] Optionally, in yet another embodiment, Figure 1 yes Figure 5 A schematic diagram of a cross-section along the B-B' direction. See also... Figure 5 The light-shielding structure 40 and the light-filtering structure 510 are disposed on the same layer. The display panel also includes a second planarization layer 70 located between the film layer where the touch electrode 30 is located and the film layer where the light-shielding structure 40 is located, and the second planarization layer 70 covers the touch electrode 30.

[0067] For example, such as Figure 6In the illustrated embodiment, the second planarization layer 70 includes a second surface on the side away from the substrate 10. The light-shielding structure 40 and the light-filtering structure 510 are both located on the second surface. The touch electrode 30 is located on the side of the second planarization layer 70 closest to the substrate 10. Along the thickness direction of the display panel, any two of the light-shielding structure 40, the second planarization layer 70, and the touch electrode 30 overlap each other. Furthermore, on the same side of the boundary region S1, the distances from the light-shielding edge of the light-shielding structure 40 to the boundary of the boundary region S1, the distance from the touch edge of the touch electrode 30 to the boundary of the boundary region S1, and the distance from the planar edge of the second planarization layer 70 to the boundary of the boundary region S1 are approximately the same. That is, in this embodiment of the invention, a complete touch layer, a complete second planarization layer, and a complete black photoresist layer are prepared on the side of the encapsulation layer 03 away from the substrate 10, and then the entire touch layer, the complete second planarization layer, and the complete black photoresist layer are etched using the same mask. In other words, in this embodiment of the invention, when fabricating the touch electrode 30, the mask for the touch electrode 30 is reused as the mask for the second planarization layer 70 and the mask for the light-shielding structure 40. Multiple light-shielding structures 40, the second planarization layer 70, and the touch electrode 30 are fabricated in the same process flow using a single masking process. At this time, the simultaneously fabricated touch electrode 30, second planarization layer 70, and light-shielding structure 40 overlap each other along the thickness direction of the substrate 10. Thus, a separate masking process is not required to fabricate the light-shielding structure 40, reducing one masking process and the fabrication steps of the display panel, thereby lowering the production cost of the display panel.

[0068] Optionally, based on the above embodiments, Figure 1 yes Figure 6 Another schematic diagram of a cross-section along the A-A' direction. See also... Figure 6 The filter structure 510 includes a first filter structure 510A and a second filter structure 510B, the first filter structure 510A and the second filter structure 510B having different colors. Along the thickness direction of the substrate 10, the first filter structure 510A and the second filter structure 510B are staggered.

[0069] For example, such as Figure 7In the embodiment shown, the first filter structure 510A and the second filter structure 510B are staggered along the thickness direction of the substrate 10. That is, in the filter layer 50, there is a gap between the first filter structure 510A and the second filter structure 510B, which are of different colors, so that the first filter structure 510A and the second filter structure 510B are separated. This avoids the material of the first filter structure 510A and the material of the second filter structure 510B from interpenetrating and contaminating each other at the boundary between them, thereby affecting the light emission accuracy of the boundary area. For example, the first filter structure 510A is a red light filter structure, and the second filter structure 510B is a green light filter structure. If the red light filter structure and the green light filter structure overlap, the overlapping area will appear yellowish due to material contamination and penetration, resulting in inaccurate light emission in the edge area of ​​the light-emitting element 20. Therefore, this embodiment of the invention separates the first filter structure 510A and the second filter structure 510B to ensure the light emission accuracy of the boundary area of ​​the light-emitting element 20 and improve the display effect of the display panel.

[0070] Optionally, in yet another embodiment, Figure 7 This is a schematic diagram of another display panel provided in an embodiment of the present invention. See also... Figure 7 The light-shielding structure 40 includes a plurality of first light-shielding structures 410 and a plurality of second light-shielding structures 420. The extending directions of the first light-shielding structures 410 and the second light-shielding structures 420 intersect, and the intersection of the first light-shielding structures 410 and the second light-shielding structures 420 forms a mesh-like structure. For example, as shown... Figure 8 In the embodiment shown, the first light-shielding structure 410 and the second light-shielding structure 420 intersect to form a grid-like structure. Different light-filtering structures 510 are disposed within the "mesh" of the grid-like structure, thereby defining the effective display area of ​​the light-emitting element 20 through the first light-filtering structure 510 and the second light-shielding structure 420. The grid-like light-shielding structure 40 absorbs crosstalk light and various reflected light, thereby improving the purity and contrast of the color.

[0071] Optionally, based on the above embodiments, Figure 1 yes Figure 8 Another schematic diagram of a cross-section along the A-A' direction. See also... Figure 8 The touch electrode 30 includes a touch driving electrode 310 and a touch sensing electrode 320.

[0072] The display panel also includes a driving electrode connection portion 330 and a sensing electrode connection portion 340. The driving electrode connection portion 330 connects to two adjacent touch driving electrodes 310, and the sensing electrode connection portion 340 connects to two adjacent touch sensing electrodes 320. The driving electrode connection portion 330 is disposed on the same layer as the touch driving electrodes 310, and the sensing electrode connection portion 340 is located on the side of the driving electrode connection portion 330 closer to the substrate 10; or, the sensing electrode connection portion 340 is disposed on the same layer as the touch driving electrodes 310, and the driving electrode connection portion 330 is located on the side of the sensing electrode connection portion 340 closer to the substrate 10.

[0073] For example, such as Figure 9 In the illustrated embodiment, the driving electrode connection portion 330 and the touch driving electrode 310 are on the same layer and electrically connected, as an example. In this case, the touch sensing electrode 320 and the sensing electrode connection portion 340 are on the same layer and electrically connected. The touch driving electrode 310 and the touch sensing electrode 320 are disposed on different layers, that is, the touch driving electrode 310 is located on the side of the touch sensing electrode 320 away from the substrate 10, so that when the user operates the display panel, a touch signal can be formed between the touch driving electrode 310 and the touch sensing electrode 320. It should be noted that the embodiments of the present invention do not limit the connection relationship and position of the various parts of the touch electrode 30. In other embodiments, the driving electrode connection portion 330 may also be disposed on the same layer as the touch sensing electrode 320, the sensing electrode connection portion 340 may be disposed on the same layer as the touch driving electrode 310, or the touch driving electrode 310 and the touch sensing electrode 320 may be disposed on different layers, etc. Those skilled in the art can make such configurations as needed.

[0074] Based on the same inventive concept, embodiments of the present invention also provide a display panel. Figure 1 yes Figure 1 A schematic diagram of a cross-section along the C-C' direction. See also... Figure 9 and Figure 1 Specifically, such as Figure 2 As shown, the display panel includes a display area AA, which includes multiple sub-pixels 01. Each sub-pixel 01 may include a first sub-pixel, a second sub-pixel, and a third sub-pixel with different emission colors. The first, second, and third sub-pixels are arranged in an array. Figure 10As shown, sub-pixel 01 includes a light-emitting element 20 and a pixel driving circuit 02. The light-emitting element 20 is electrically connected to the pixel driving circuit 02, which provides a driving signal to the light-emitting element 20 to drive it to emit light, thereby realizing the display of the image in display area AA. The display panel also includes an encapsulation layer 03 and a touch electrode 30. The encapsulation layer 03 covers the side of the light-emitting element 20 away from the substrate 10 to isolate moisture and oxygen, thus protecting the light-emitting element 20. The touch electrode 30 is disposed on the side of the encapsulation layer 03 away from the light-emitting element 20 and is used to realize the touch function of the display panel. In addition, the display panel also includes a light filter layer 50 located on the side of the touch electrode 30 away from the light-emitting element 20, wherein the light filter layer 50 includes multiple light filter structures 510 of different colors. For example, the multiple light filter structures 510 of different colors may include a red light filter structure, a green light filter structure, and a blue light filter structure. Along the thickness direction of the substrate 10, the red light filter structure overlaps at least partially with the red light emitting element, the green light filter structure overlaps at least partially with the green light emitting element, and the blue light filter structure overlaps at least partially with the blue light emitting element. Thus, the filter structure 510 allows light of the corresponding color to pass through and blocks light of other colors, making the emitted color more accurate and the display saturation higher.

[0075] Furthermore, during the display's emission, due to light scattering and refraction, crosstalk occurs between two adjacent light-emitting elements 20 with different emission colors. This means that the colored light emitted by one light-emitting element 20 enters the emission area of ​​another, resulting in poor contrast. Therefore, a light-shielding structure 40 needs to be set at the boundary region S1 between two adjacent filter structures 510 with different colors to absorb reflected light from the light-emitting elements 20 and improve display contrast. However, fabricating the light-shielding structure and filter layer on the touch electrode requires four masking processes. For example, when the filter layer includes red, green, and blue light filter structures, a masking process is first used to fabricate the light-shielding structure on one side of the touch electrode, followed by three masking processes to fabricate the red, green, and blue light filter structures between the light-shielding structures. This makes the display panel fabrication process complex and costly.

[0076] Therefore, in this embodiment of the invention, the touch electrode 30 is reused as a light-shielding structure 40. That is, the filter layer 50 is located on the side of the touch electrode 30 away from the substrate 10, and along the thickness direction of the substrate, the boundary region S1 between the touch electrode 30 and two adjacent filter structures 510 of different colors at least partially overlaps. In this way, after the touch electrode 30 is formed by one mask process, the red light filter structure, green light filter structure and blue light filter structure are respectively formed by three mask processes on the side of the touch electrode 30 away from the substrate 10. There is no need to use a mask process to form the light-shielding structure 40, which can reduce one mask process, reduce the manufacturing process of the display panel, and thus reduce the production cost of the display panel.

[0077] Optionally, based on the above embodiments, Figure 1 yes Figure 1 Another cross-sectional diagram along the C-C' direction, see [reference needed]. Figure 10 and Figure 10 The surface of the touch electrode 30 away from the substrate 10 is in contact with the filter layer 50.

[0078] For example, such as Figure 11 In the illustrated embodiment, along the thickness direction of the display panel, the touch electrode 30 at least partially overlaps with the boundary region S1 of two adjacent filter structures 510 of different colors. Furthermore, the surface of the touch electrode 30 away from the substrate 10 contacts the surface of the filter structure 510 near the substrate 10. This prevents light emitted from the light-emitting element 20 from being reflected or scattered and then passing through the gap between the touch electrode 30 and the filter structure 510 into the other light-emitting element 20, further enhancing the anti-crosstalk effect of the touch electrode 30. In addition, in this embodiment, the touch electrode 30 is reused as a light-shielding structure 40, meaning the film layer containing the light-shielding structure 40 is removed, resulting in a lower overall filter layer 50, which facilitates the thinning of the display panel.

[0079] Optionally, based on the above embodiments, Figure 1 yes Figure 1 Another schematic diagram of a cross-section along the C-C' direction. See also... Figure 11 and Figure 10 The filter layer 50 is provided with a groove S2, the opening direction of the groove S2 is the direction of the touch electrode 30 toward the substrate 10, and at least part of the touch electrode 30 is located in the groove S2.

[0080] Specifically, in one embodiment, such as Figure 11 As shown, the surface of the touch electrode 30 away from the substrate 10 is flush with the surface of the filter structure 510 near the touch electrode 30, thereby achieving contact between the surface of the touch electrode 30 away from the touch electrode 30 and the filter layer 50. However, in other embodiments, such as Figure 12As shown, a groove S2 is provided in the boundary region S1 of two adjacent filter structures 510 with different colors. The groove S2 is located on the surface of the boundary region S1 near the touch electrode 30, that is, the opening direction of the groove S2 faces the substrate 10, thereby accommodating part of the touch electrode 30, so that the surface of the touch electrode 30 away from the substrate 10 contacts the filter layer 50. In this way, since part of the touch electrode 30 is located in the filter structure 510, the anti-crosstalk effect of the filter structure 510 can be further improved.

[0081] Optionally, in yet another embodiment, Figure 1 yes Figure 12 Another schematic diagram of a cross-section along the C-C' direction. See also... Figure 12 The filter structure 50 includes a first filter structure 510A and a second filter structure 510B, with the first filter structure 510A and the second filter structure 510B having different colors. Along the thickness direction of the substrate 10, the first filter structure 510A and the second filter structure 510B at least partially overlap in the boundary region S1. Specifically, since the touch electrode 30 is reused as a light-shielding structure 40 in this embodiment of the invention, and the touch electrode 30 is a metallic conductive material with a certain degree of reflectivity, by setting the first filter structure 510A and the second filter structure 510B of different colors to at least partially overlap in the boundary region S1, the reflected light from the touch electrode 30 is absorbed through the overlapping portion of the first filter structure 510A and the second filter structure 510B in the boundary region S1, thereby improving the reflectivity of the touch electrode 30 and further enhancing the display effect of the display panel.

[0082] Optionally, based on the above embodiments, see also... Figure 12 The first filter structure 510A includes a first filter structure portion 510A1 and a second filter structure portion 510A2 connected together. Along the thickness direction of the substrate 10, the first filter structure portion 510A1 and the second filter structure 510B are offset, and the surface of the first filter structure portion 510A1 away from the substrate 10 is flush with the surface of the second filter structure 510B away from the substrate 10. The second filter structure portion 510A2 is located in the boundary region S1 and is located on the surface of the second filter structure 510B away from the substrate 10. For example, as shown... Figure 13In the illustrated embodiment, the first filter structure 510A includes a first filter structure portion 510A1 and a second filter structure portion 510A2. The second filter structure portion 510A2 is connected to the first filter structure portion 510A1, and the second filter structure portion 510A2 is located on the side of the first filter structure portion 510A1 away from the substrate 10. The first filter structure portion 510A1 and the second filter structure 510B are disposed in the same layer, meaning the surface of the first filter structure portion 510A1 away from the substrate 10 is flush with the surface of the second filter structure 510B away from the substrate 10. Furthermore, the first filter structure portion 510A1 is staggered from the boundary region S1, ensuring that the first filter structure portion 510A1 can filter the light emitted by the corresponding color light-emitting element 20. The second filter structure portion 510A2 is located on the surface of the second filter structure 510B away from the substrate 10. It overlaps with the second filter structure 510B in the junction region S1. The overlapping portion absorbs the reflected light from the touch electrode 30, thereby improving the reflection phenomenon of the touch electrode 30 and further enhancing the display effect of the display panel.

[0083] Based on the same inventive concept, embodiments of the present invention also provide a method for manufacturing a display panel. Figure 13 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention. See also... Figure 14 The preparation method includes:

[0084] S110 provides a substrate.

[0085] Specifically, the substrate serves to support and protect the film layer located thereon. The substrate can be a rigid substrate, such as one made of glass; it can also be a flexible substrate, for example, the substrate material may include one or more combinations of polymer resins selected from polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, and cellulose acetate propionate. No specific limitation is made to the substrate material here.

[0086] S120. Prepare a light-emitting element on one side of the substrate.

[0087] For example, the display area of ​​the display panel includes multiple sub-pixels. Each sub-pixel includes an electrically connected light-emitting element and a pixel driving circuit. In this embodiment of the invention, multiple metal layers and interlayer insulating layers are fabricated on one side of the substrate to form the pixel driving circuit, and multiple light-emitting elements are fabricated on the side of the pixel driving circuit away from the substrate.

[0088] S130. Multiple touch electrodes and multiple light-shielding structures are formed on the side of the light-emitting element away from the substrate.

[0089] Specifically, an encapsulation layer is formed on the side of the light-emitting element away from the substrate, covering the light-emitting element to isolate it from moisture and oxygen, thus protecting it. Touch electrodes are used to enable the touch function of the display panel. Furthermore, a light-shielding structure is provided between two adjacent light-emitting elements with different emission colors. This structure absorbs reflected light between the light-emitting elements, improving display contrast. In this embodiment, when forming the touch electrodes, the mask for the touch electrodes is reused as the mask for the light-shielding structure; that is, a single masking process is used to form both the touch electrodes and the light-shielding structure in the same process flow. At this time, the simultaneously formed touch electrodes and light-shielding structure at least partially overlap along the thickness direction of the substrate. Thus, a separate masking process is not required to form the light-shielding structure, reducing one masking process and the number of steps in the display panel manufacturing process, thereby lowering the production cost of the display panel.

[0090] S140. A filter layer is prepared on the side of the touch electrode away from the light-emitting element. The filter layer includes filter structures of various colors.

[0091] Specifically, the light-shielding layer includes multiple color filter structures. For example, these color filter structures may include a red light filter structure, a green light filter structure, and a blue light filter structure. Along the thickness direction of the substrate, the red light filter structure at least partially overlaps with the red light-emitting element, the green light filter structure at least partially overlaps with the green light-emitting element, and the blue light filter structure at least partially overlaps with the blue light-emitting element. This allows light of the corresponding color to pass through while blocking other colors, resulting in more accurate color emission and higher display saturation. Furthermore, the light-shielding structure is located at the boundary region between two adjacent filter structures of different colors, i.e., along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region. This absorbs reflected light from the light-emitting elements, improving display contrast. The light-shielding structure can also absorb reflected light from ambient light and reflected light from the metal traces in the display panel, further ensuring the display effect of the display panel.

[0092] In yet another embodiment, Figure 15 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention. Figure 14 This is a process flow diagram of a method for manufacturing a display panel according to an embodiment of the present invention. See also... Figure 15 and Figure 16 The preparation method includes:

[0093] S210 provides a substrate.

[0094] S220. Prepare a light-emitting element on one side of the substrate.

[0095] S230. Prepare a full-layer touch layer on the side of the light-emitting element away from the substrate, and form a full-layer black photoresist layer on the side of the touch layer away from the substrate.

[0096] Specifically, the touch electrode 30 includes a first surface on the side away from the substrate 10, and the light-shielding structure 40 is disposed on the first surface and contacts the touch electrode 30. Specifically, when fabricating the touch electrode 30 and the light-shielding structure 40, a full-layer touch layer can be first fabricated on the side of the encapsulation layer 03 away from the light-emitting element 20, and a full-layer black photoresist layer can be formed on the side of the full-layer touch layer away from the substrate 10.

[0097] S240. The same process is used to simultaneously etch the touch layer and the black photoresist layer to form multiple touch electrodes, and to retain the portion of the black photoresist layer that overlaps with the touch electrodes to form multiple light-shielding structures.

[0098] The touch layer and the black photoresist layer are etched simultaneously using the same photomask, ultimately forming a stacked structure of touch electrode 30 and light-shielding structure 40. In this embodiment of the invention, the black photoresist serves as a "photomask" for the touch electrode 30. Specifically, after preparing the entire touch layer and the black photoresist layer, light of a specific wavelength (such as ultraviolet light) is irradiated onto the black photoresist through a photomask etched with a target pattern. The chemical properties of the areas of the black photoresist irradiated by the light change. When rinsing with a chemical developer, the areas of the black photoresist irradiated by the light, or those not irradiated by the light, are dissolved by the chemical developer, thereby forming the same target pattern (i.e., the pattern of the light-shielding structure 40) on the black photoresist. The undissolved portions of the black photoresist are then cured to form a "photomask" for the touch layer. An etching solution for the touch layer is then used to etch away the areas of the touch layer not protected by the black photoresist, thereby forming multiple touch electrodes 30. On the other hand, the black photoresist is also reused as a light-shielding structure 40. In the prior art, after forming the touch electrode 30, a specific solvent or plasma is used to remove all residual photoresist on the touch electrode 30, and a new masking process and other related processes are used to prepare the light-shielding structure. In this invention, after etching to form the touch electrode 30, the black photoresist on the touch electrode 30 is retained, and the black photoresist overlapping with the touch electrode 30 serves as the light-shielding structure 40 to prevent crosstalk between two adjacent light-emitting elements 20 with different emission colors. Furthermore, in this embodiment of the invention, the photoresist used to prepare the touch electrode 30 is set to black photoresist. This black photoresist not only serves as a mask for forming the pattern of the touch electrode 30 throughout the entire process, but is also reused as a light-shielding structure 40 to prevent crosstalk between two adjacent light-emitting elements 20 with different emission colors. This eliminates the need for a separate masking process to prepare the light-shielding structure, reducing one masking process and the manufacturing process of the display panel, thereby reducing production costs.

[0099] S250. A first planarization layer is formed on the side of the light-shielding structure away from the substrate. The first planarization layer covers the light-shielding structure, and the surface of the first planarization layer away from the substrate is flush with the surface of the light-shielding structure away from the substrate.

[0100] Specifically, since the touch electrode 30 and the light-shielding structure 40 are fabricated simultaneously using the same masking process, and the material of the light-shielding structure 40 includes black photoresist, both the touch electrode 30 and the light-shielding structure 40 are located within the first planarization layer 60. That is, in this embodiment of the invention, after simultaneously fabricating the touch electrode 30 and the light-shielding structure 40, an inorganic material is deposited on the side of the light-shielding structure 40 away from the substrate 10 to form the first planarization layer 60. This facilitates the fabrication of multiple filter structures 510 on the side of the first planarization layer 60 away from the substrate 10.

[0101] S260. A filter layer is prepared on the side of the first flat layer away from the light-emitting element so that the light-shielding structure comes into contact with the boundary area of ​​two adjacent filter structures of different colors.

[0102] Specifically, along the thickness direction of the display panel, the boundary area S1 of the light-shielding structure 40 and the two adjacent filter structures 510 of different colors at least partially overlaps, and the surface of the light-shielding structure 40 away from the touch electrode 30 contacts the surface of the filter structure 510 near the substrate 10, thereby preventing the light emitted by the light-emitting element 20 from being reflected or scattered and entering the other light-emitting element 20 through the gap between the light-shielding structure 40 and the filter structure 510, further improving the anti-crosstalk effect of the light-shielding structure 40.

[0103] In yet another embodiment, Figure 17 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention. Figure 16 This is a process flow diagram of another method for manufacturing a display panel according to an embodiment of the present invention. See also Figure 17 and Figure 18 The preparation method includes:

[0104] S310 provides a substrate.

[0105] S320. Prepare a light-emitting element on one side of the substrate.

[0106] S330. A full-layer touch layer is prepared on the side of the light-emitting element away from the substrate. A full-layer second planarization layer is prepared on the side of the touch layer away from the substrate. A full-layer black photoresist layer is formed on the side of the second planarization layer away from the substrate.

[0107] Specifically, after forming an encapsulation layer 03 on the side of the light-emitting element 20 away from the substrate 10, a full-layer touch layer, a second planarization layer, and a black photoresist layer are respectively formed on the side of the encapsulation layer 03 away from the substrate 10. Among them, the full-layer second planarization layer is located between the full-layer touch layer and the full-layer black photoresist layer.

[0108] S340. The entire touch layer, the entire second planarization layer, and the entire black photoresist layer are etched using the same mask to form multiple touch electrodes, a light-shielding structure, and a second planarization layer.

[0109] Specifically, the entire touch layer, the entire second planarization layer, and the entire black photoresist layer are etched using the same mask. In other words, in this embodiment of the invention, when fabricating the touch electrode 30, the mask for the touch electrode 30 is reused as the mask for the second planarization layer 70 and the mask for the light-shielding structure 40. Multiple light-shielding structures 40, the second planarization layer 70, and the touch electrode 30 are fabricated in the same process flow using a single masking process. At this time, the simultaneously fabricated touch electrode 30, second planarization layer 70, and light-shielding structure 40 overlap each other along the thickness direction of the substrate 10. Thus, a separate masking process is not required to fabricate the light-shielding structure 40, reducing one masking process and the fabrication steps of the display panel, thereby reducing the production cost of the display panel.

[0110] S350. A filter layer is prepared on the side of the second planarization layer away from the substrate, so that the filter structure and the light-shielding structure are set in the same layer.

[0111] Material is deposited on the side of the second planarization layer 70 away from the substrate 10 to form a first planarization layer 60. The surface of the first planarization layer 60 away from the substrate 10 is flush with the surface of the second planarization layer 70 away from the substrate 10, thereby providing planarization conditions for the subsequent fabrication of the filter structure 510. Different masking processes are used to form different filter structures 510 between two adjacent light-shielding structures 40. The surface of the light-shielding structure 40 near the substrate 10 is flush with the surface of the filter structure 510 near the substrate 10, so that the light-shielding structure 40 is completely embedded in the filter structure 510. Along the thickness direction of the substrate 10, the light-shielding structure 40 at least partially overlaps with the boundary region S1, thereby ensuring the anti-crosstalk effect of the light-shielding structure 40.

[0112] Based on the same inventive concept, embodiments of the present invention also provide a method for manufacturing a display panel. Figure 18 This is a schematic flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention. See also... Figure 19 The preparation method includes:

[0113] S410 provides a substrate.

[0114] Specifically, the substrate serves to support and protect the film layer located thereon. The substrate can be a rigid substrate, such as one made of glass; it can also be a flexible substrate, for example, the substrate material may include one or more combinations of polymer resins selected from polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, and cellulose acetate propionate. No specific limitation is made to the substrate material here.

[0115] S420: Fabricate a light-emitting element on one side of the substrate.

[0116] For example, the display area of ​​the display panel includes multiple sub-pixels. Each sub-pixel includes an electrically connected light-emitting element and a pixel driving circuit. In this embodiment of the invention, multiple metal layers and interlayer insulating layers are fabricated on one side of the substrate to form the pixel driving circuit, and multiple light-emitting elements are fabricated on the side of the pixel driving circuit away from the substrate.

[0117] S430. Multiple touch electrodes are formed on one side of the light-emitting element, and a filter layer is formed on the side of the touch electrodes away from the light-emitting element.

[0118] Specifically, the filter layer includes multiple filter structures of different colors. Along the thickness direction of the substrate, the interface between the touch electrode and two adjacent filter structures of different colors at least partially overlaps. In this embodiment of the invention, the touch electrode is reused as a light-shielding structure, that is, the filter layer is located on the side of the touch electrode away from the substrate, and along the thickness direction of the substrate, the interface between the touch electrode and two adjacent filter structures of different colors at least partially overlaps. Thus, after the touch electrode is formed using a single masking process, three masking processes are used on the side of the touch electrode away from the substrate to respectively prepare the red light filter structure, the green light filter structure, and the blue light filter structure. This eliminates the need for a masking process to prepare the light-shielding structure, reducing one masking process and the manufacturing steps of the display panel, thereby lowering the production cost of the display panel.

[0119] In yet another embodiment, Figure 20 This is a schematic flowchart of another method for manufacturing a display panel provided in an embodiment of the present invention. Figure 19 This is a schematic flowchart illustrating another method for manufacturing a display panel according to an embodiment of the present invention. See also... Figure 20 and Figure 21 The preparation method includes:

[0120] S510 provides a substrate.

[0121] S520. Prepare a light-emitting element on one side of the substrate.

[0122] S530. Prepare a full-layer touch layer on the side of the light-emitting element away from the substrate, and form a full-layer photoresist layer on the side of the touch layer away from the substrate. Etch the touch layer and remove the photoresist layer to form multiple touch electrodes.

[0123] Specifically, an encapsulation layer 03 is prepared on the side of the light-emitting element 20 away from the substrate 10 to protect the light-emitting element 20 from water and oxygen corrosion. Then, a full-layer touch layer is prepared on the encapsulation layer 03 away from the substrate 10, and a full-layer photoresist layer is prepared on the side of the touch layer away from the substrate 10. Light of a specific wavelength (such as ultraviolet light) is irradiated onto the photoresist layer through a mask etched with a target pattern, causing a change in the chemical properties of the illuminated areas. When rinsed with a chemical developer, the illuminated or unilluminated areas of the photoresist layer are dissolved, thus forming the same target pattern (i.e., the pattern of the light-shielding structure 40) as the mask on the photoresist layer. The undissolved portions of the photoresist layer are then cured to form a "mask" for the touch layer. An etchant for the touch layer is then used to etch away areas of the touch layer not protected by the photoresist layer. Finally, the photoresist layer is completely removed using the etchant, resulting in multiple touch electrodes 30. In this embodiment, the touch electrodes 30 are reused as a light-shielding structure 40. Specifically, the filter layer is located on the side of the touch electrode 30 away from the substrate 10, and along the thickness direction of the substrate 10, the boundary region S1 between the touch electrode 30 and two adjacent filter structures 510 of different colors at least partially overlaps. Thus, after forming the touch electrodes 30 using a single masking process, there is no need to use a masking process to form the light-shielding structure 40, reducing one masking process, simplifying the display panel manufacturing process, and thereby lowering the production cost of the display panel.

[0124] S540. A first planarization layer is formed on the side of the touch electrode away from the substrate. The first planarization layer covers the touch electrode, and the surface of the first planarization layer away from the substrate is flush with the surface of the touch electrode away from the substrate.

[0125] Specifically, a first planarization layer 60 is formed on the side of the touch electrode 30 away from the substrate 10. The surface of the first planarization layer 60 away from the substrate 10 is flush with the surface of the touch electrode 30 away from the substrate 10, thereby providing planarization conditions for the subsequent fabrication of multiple filter structures 510 on the first planarization layer 60.

[0126] S550, a filter layer is prepared on the side of the first planar layer away from the light-emitting element so that the touch electrode comes into contact with the boundary area of ​​two adjacent filter structures of different colors.

[0127] Specifically, along the thickness direction of the display panel, the touch electrode 30 at least partially overlaps with the boundary region S1 of two adjacent filter structures 510 of different colors. Furthermore, the surface of the touch electrode 30 away from the substrate 10 contacts the surface of the filter structure 510 near the substrate 10. This prevents light emitted from the light-emitting element 20 from being reflected or scattered and then passing through the gap between the touch electrode 30 and the filter structure 510 into the other light-emitting element 20, further enhancing the anti-crosstalk effect of the touch electrode 30. In addition, in this embodiment of the invention, the touch electrode 30 is reused as a light-shielding structure 40, meaning the film layer containing the light-shielding structure 40 is removed, and the filter layer 50 is lowered overall, thus facilitating the thinning of the display panel.

[0128] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 21 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. ​ As shown, the display device includes the display panel 100 in the above embodiments. This display device includes the display panel 100 of any embodiment of the present invention; therefore, the display device provided by the embodiments of the present invention possesses the corresponding beneficial effects of the display panel 100 provided by the embodiments of the present invention, which will not be elaborated further here. For example, the display device can be an electronic device such as a mobile phone, computer, smart wearable device (e.g., smartwatch), and in-vehicle display device; the embodiments of the present invention do not limit this.

[0129] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include: Substrate; A light-emitting element is located on one side of the substrate; Multiple touch electrodes and multiple light-shielding structures are provided. Along the thickness direction of the substrate, the touch electrodes and the light-shielding structures at least partially overlap, and both the touch electrodes and the light-shielding structures are located on the side of the light-emitting element away from the substrate. A filter layer, located on the side of the touch electrode away from the light-emitting element, includes filter structures of various colors; along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region of two adjacent filter structures of different colors.

2. The display panel according to claim 1, characterized in that, The light-shielding structure includes a light-shielding edge, and the touch electrode includes an electrode edge. The light-shielding edge and the electrode edge are located on the same side of the boundary region of two adjacent filter structures of different colors. The distance between the light-shielding edge and the boundary region of two adjacent filter structures of different colors is L1, and the distance between the electrode edge and the boundary region of two adjacent filter structures of different colors is L2; Where |L1-L2|L1≤10%.

3. The display panel according to claim 1, characterized in that, The material of the light-shielding structure includes black photoresist, and the touch electrode and the light-shielding structure are in contact.

4. The display panel according to claim 3, characterized in that, The display panel further includes a first planarization layer, in which the touch electrodes and the light-shielding structure are both located.

5. The display panel according to claim 3, characterized in that, The surface of the light-shielding structure away from the touch electrode is in contact with the filter layer.

6. The display panel according to claim 5, characterized in that, The filter layer is provided with a groove, and the opening direction of the groove is the direction in which the light-shielding structure faces the substrate; At least a portion of the light-shielding structure is located within the groove.

7. The display panel according to claim 1, characterized in that, The light-shielding structure and the light-filtering structure are arranged in the same layer; The display panel further includes a second planarization layer located between the film layer containing the touch electrode and the film layer containing the light-shielding structure, the second planarization layer covering the touch electrode.

8. The display panel according to claim 1, characterized in that, The filter structure includes a first filter structure and a second filter structure, wherein the first filter structure and the second filter structure have different colors; Along the thickness direction of the substrate, the first filter structure and the second filter structure are staggered.

9. The display panel according to claim 1, characterized in that, The light-shielding structure includes a plurality of first light-shielding structures and a plurality of second light-shielding structures, wherein the extension directions of the first light-shielding structures and the second light-shielding structures intersect. The first light-shielding structure and the second light-shielding structure intersect to form a grid-like structure.

10. The display panel according to claim 1, characterized in that, The touch electrode includes a touch driving electrode and a touch sensing electrode; The display panel further includes a driving electrode connection portion and a sensing electrode connection portion, wherein the driving electrode connection portion connects two adjacent touch driving electrodes, and the sensing electrode connection portion connects two adjacent touch sensing electrodes; The driving electrode connection portion is disposed in the same layer as the touch driving electrode, and the sensing electrode connection portion is located on the side of the driving electrode connection portion closer to the substrate; or, the sensing electrode connection portion is disposed in the same layer as the touch driving electrode, and the driving electrode connection portion is located on the side of the sensing electrode connection portion closer to the substrate.

11. A display panel, characterized in that, include: Substrate; A light-emitting element is located on one side of the substrate; Multiple touch electrodes are located on the side of the light-emitting element away from the substrate; A filter layer is located on the side of the touch electrode away from the light-emitting element, and includes filter structures of various colors; along the thickness direction of the substrate, the interface region of the touch electrode and two adjacent filter structures of different colors at least partially overlaps.

12. The display panel according to claim 11, characterized in that, The surface of the touch electrode on the side away from the substrate is in contact with the filter layer.

13. The display panel according to claim 12, characterized in that, The filter layer is provided with a groove, and the opening direction of the groove is the direction in which the touch electrode faces the substrate; At least a portion of the touch electrode is located within the groove.

14. The display panel according to claim 1, characterized in that, The filter structure includes a first filter structure and a second filter structure, wherein the first filter structure and the second filter structure have different colors; Along the thickness direction of the substrate, the first filter structure and the second filter structure at least partially overlap in the boundary region.

15. The display panel according to claim 14, characterized in that, The first filter structure includes a first filter structure portion and a second filter structure portion connected together; Along the thickness direction of the substrate, the first filter structure portion is staggered from the second filter structure, and the surface of the first filter structure portion away from the substrate is flush with the surface of the second filter structure away from the substrate. The second filter structure is located in the boundary region and on the surface of the second filter structure away from the substrate.

16. A method for manufacturing a display panel, used to manufacture the display panel according to any one of claims 1-10, characterized in that, include: Provide substrate; A light-emitting element is fabricated on one side of the substrate; A plurality of touch electrodes and a plurality of light-shielding structures are formed on the side of the light-emitting element away from the substrate, wherein the touch electrodes and the light-shielding structures at least partially overlap along the thickness direction of the substrate; A filter layer is prepared on the side of the touch electrode away from the light-emitting element. The filter layer includes filter structures of various colors. Along the thickness direction of the substrate, the light-shielding structure at least partially overlaps with the boundary region of two adjacent filter structures of different colors.

17. The preparation method according to claim 16, characterized in that, Multiple touch electrodes and multiple light-shielding structures are fabricated on the side of the light-emitting element away from the substrate, including: A full-layer touch layer is prepared on the side of the light-emitting element away from the substrate, and a full-layer black photoresist layer is formed on the side of the touch layer away from the substrate; The same process is used to simultaneously etch the touch layer and the black photoresist layer to form multiple touch electrodes, and to retain the portion of the black photoresist layer that overlaps with the touch electrodes to form multiple light-shielding structures.

18. The preparation method according to claim 17, characterized in that, After forming multiple touch electrodes and a light-shielding structure on the side of the light-emitting element away from the substrate, the process further includes: A first planarization layer is formed on the side of the light-shielding structure away from the substrate. The first planarization layer covers the light-shielding structure, and the surface of the first planarization layer on the side away from the substrate is flush with the surface of the light-shielding structure on the side away from the substrate.

19. The preparation method according to claim 18, characterized in that, After forming the first planarization layer on the side of the light-shielding structure away from the substrate, the method further includes: The filter layer is prepared on the side of the first flat layer away from the light-emitting element, so that the light-shielding structure comes into contact with the boundary region of two adjacent filter structures of different colors.

20. The preparation method according to claim 16, characterized in that, Multiple touch electrodes and multiple light-shielding structures are fabricated on the side of the light-emitting element away from the substrate, including: A full-length touch layer is prepared on the side of the light-emitting element away from the substrate; A second planarization layer is formed on the side of the touch layer away from the substrate, and a black photoresist layer is formed on the side of the second planarization layer away from the substrate. The entire touch layer, the entire second planarization layer, and the entire black photoresist layer are etched using the same mask to form multiple touch electrodes, a light-shielding structure, and the second planarization layer, wherein the second planarization layer covers the touch electrodes.

21. The preparation method according to claim 20, characterized in that, After etching the entire touch layer, the entire second planarization layer, and the entire black photoresist layer using the same mask, the process further includes: The filter layer is prepared on the side of the second flat layer away from the substrate, so that the filter structure and the light-shielding structure are disposed in the same layer.

22. A method for manufacturing a display panel, used to manufacture the display panel according to any one of claims 11-15, characterized in that, Provide substrate; A light-emitting element is fabricated on one side of the substrate; Multiple touch electrodes are formed on one side of the light-emitting element; A filter layer is prepared on the side of the touch electrode away from the light-emitting element. The filter layer includes filter structures of various colors. Along the thickness direction of the substrate, the interface region between the touch electrode and two adjacent filter structures of different colors at least partially overlaps.

23. The preparation method according to claim 22, characterized in that, Multiple touch electrodes are formed on one side of the light-emitting element, including: A full-layer touch layer is prepared on the side of the light-emitting element away from the substrate, and a full-layer photoresist layer is formed on the side of the touch layer away from the substrate; The touch layer is etched and the photoresist layer is removed to form a plurality of touch electrodes, wherein the touch electrodes are reused as the light-shielding structure.

24. The preparation method according to claim 23, characterized in that, After forming multiple touch electrodes on one side of the light-emitting element, it also includes... A first planarization layer is formed on the side of the touch electrode away from the substrate, the first planarization layer covers the touch electrode, and the surface of the first planarization layer away from the substrate is flush with the surface of the touch electrode away from the substrate.

25. The preparation method according to claim 24, characterized in that, After forming a first planarization layer on the side of the touch electrode away from the substrate, the method further includes: The filter layer is prepared on the side of the first flat layer away from the light-emitting element, so that the touch electrode comes into contact with the boundary region of two adjacent filter structures of different colors.

26. A display device, characterized in that, include: The display panel according to claims 1-15.

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