Display panel, preparation method thereof and electronic equipment

Abstract

The invention discloses a display panel, a preparation method thereof and electronic equipment. The display panel comprises a substrate; the anode metal layer is positioned on the surface of one side of the substrate and comprises a plurality of anodes; the pixel definition layer is arranged on one side, away from the substrate, of the anode metal layer; the pixel definition layer comprises a plurality of pixel openings arranged corresponding to the anodes, and the pixel openings expose at least parts of the corresponding anodes; the first protrusions are located on the surface of the side, away from the substrate, of the pixel defining layer, the first protrusions are located between every two adjacent pixel openings in the first direction, and the first direction is parallel to the plane where the substrate is located; the first protrusions have first vertical projections on the plane where the substrate is located, and the pixel openings have second vertical projections on the plane. In the first direction, the first vertical projection is parallel to the two adjacent second vertical projections. According to the invention, the pixel definition layer can be reused to prepare the first projections with good stability as the support columns.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panels, and in particular to a display panel, a preparation method thereof and an electronic device. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) display panels have become one of the mainstream display panels today due to many advantages such as high brightness, high contrast, wide color gamut, bendability, low temperature resistance, low energy consumption, and high luminous efficiency. In the preparation process of the OLED panel, a fine metal mask (FMM) evaporation process is needed to prepare the light-emitting layer of the light-emitting element. In the existing display panel, a plurality of point-supporting (PS) structures need to be prepared on the surface of the pixel definition layer to support the fine metal mask to avoid direct contact between the fine metal mask and the pixel definition layer, thereby reducing the problem of film layer scratches in the display panel and wear of the fine metal mask caused by friction.

[0003] The existing technology needs to separately prepare the point-supporting structure on the pixel definition layer, which needs to be prepared by an additional coating and photolithography process, thereby increasing the preparation process complexity and preparation cost of the display panel. SUMMARY

[0004] In view of the above problems, the present application provides a display panel, a preparation method thereof and an electronic device, and the specific solutions are as follows:

[0005] The first aspect of the present application provides a display panel, comprising:

[0006] a substrate substrate;

[0007] an anode metal layer, the anode metal layer is located on one side surface of the substrate substrate, and comprises a plurality of anodes;

[0008] a pixel definition layer arranged on the side of the anode metal layer away from the substrate substrate;

[0009] The pixel definition layer comprises:

[0010] a plurality of pixel openings corresponding to the anodes, the pixel openings expose at least part of the corresponding anodes;

[0011] a plurality of first protrusions, the first protrusions are located on the side surface of the pixel definition layer away from the substrate substrate, and the first protrusions are located between two adjacent pixel openings in a first direction, and the first direction is parallel to the plane in which the substrate substrate is located;

[0012] The first protrusion has a first vertical projection on the plane where the substrate is located, and the pixel opening has a second vertical projection on the plane; in the first direction, the first vertical projection is parallel to the two adjacent second vertical projections.

[0013] A second aspect of this application provides an electronic device including the aforementioned display panel.

[0014] A third aspect of this application provides a method for manufacturing the above-mentioned display panel, comprising:

[0015] Provide substrates;

[0016] A patterned anode metal layer is formed on one side surface of a substrate, the anode metal layer comprising multiple anodes;

[0017] An initial pixel definition layer is formed on one side of the substrate.

[0018] A pixel definition layer with the desired graphic structure is formed in the initial pixel definition layer using a half-grayscale mask. The pixel definition layer includes: a plurality of pixel openings corresponding one-to-one with an anode, the pixel openings exposing at least a portion of the corresponding anode; a plurality of first protrusions, the side surface of the pixel definition layer facing away from the substrate having the first protrusions, and the first protrusions being located between two adjacent pixel openings in a first direction, the first direction being parallel to the plane of the substrate; the first protrusions having a first vertical projection in the plane of the substrate, and the pixel openings having a second vertical projection in the plane; in the first direction, the first vertical projection is parallel to two adjacent second vertical projections.

[0019] As described above, the pixel definition layer in this application includes a first protrusion, which can serve as a support pillar for supporting the photomask. Therefore, this application can utilize the film material of the pixel definition layer to prepare the support pillar, allowing the first protrusion to be prepared simultaneously with the pixel definition layer for the desired pattern. This eliminates the need for a separate film layer to prepare the support pillar, simplifying the display panel manufacturing process and reducing costs. Furthermore, in the first direction, since the first vertical projection is parallel to two adjacent second vertical projections, the force exerted by two adjacent pixel openings on the first protrusion in the first direction of the pixel definition layer can be balanced, improving the stability of the first protrusion and preventing collapse due to uneven force. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0022] Figure 1 This is a schematic diagram of the layout of pixel openings and support pillars in an OLED display panel;

[0023] Figure 2 for Figure 1 The image shows a cross-sectional view of the OLED display panel along line P-P'.

[0024] Figure 3 This is a schematic diagram of another layout of pixel apertures and support pillars in an OLED display panel;

[0025] Figure 4 for Figure 3 The image shows a cross-sectional view of the OLED display panel along line A-A'.

[0026] Figure 5 for Figure 3 The image shows a cross-sectional view of the display panel.

[0027] Figure 6 A schematic diagram illustrating the layout of pixel openings and a first protrusion in a display panel, provided as an embodiment of this application;

[0028] Figure 7 for Figure 6 The image shows a cross-sectional view of the display panel along Q-Q'.

[0029] Figure 8 A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0030] Figure 9 for Figure 8 The image shows a cross-sectional view of the display panel along C-C'.

[0031] Figure 10 A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0032] Figure 11 A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0033] Figure 12A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0034] Figure 13 A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0035] Figure 14 This is a schematic diagram of a sub-pixel arrangement in a display panel provided in an embodiment of this application;

[0036] Figure 15 A schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application;

[0037] Figure 16 This is a schematic diagram of a sub-pixel arrangement in a display panel provided in an embodiment of this application;

[0038] Figure 17 A cross-sectional view of a display panel provided in an embodiment of this application;

[0039] Figure 18 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0040] Figure 19 This is a schematic flowchart of a preparation method provided in an embodiment of this application.

[0041] The annotations in the attached figures are explained as follows:

[0042] Substrate 100, pixel definition layer 101, support pillar 102, pixel opening 103, first pixel opening 1031, second pixel opening 1032, third pixel opening 1033, anode 104, first protrusion 105, conductive hole 106, pixel circuit 107, circuit layer 108, sub-pixel 109, organic light-emitting layer 110, substrate 111, cathode 112, second protrusion 113, display panel 114, red sub-pixel R, green sub-pixel G, blue sub-pixel B, first direction F1, second direction F2, first side S1, second side S2, third side S3, fourth side S4. Detailed Implementation

[0043] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0044] refer to Figure 1 and Figure 2 , Figure 1This is a schematic diagram of the layout of pixel apertures and support pillars in an OLED display panel. Figure 2 for Figure 1 The diagram shows a cross-sectional view of an OLED display panel along line P-P'. The display panel includes: a substrate 100, an anode metal layer on the surface of the substrate 100, the anode metal layer including a plurality of anodes 104; and a pixel definition layer 101 disposed on the side of the anode metal layer facing away from the substrate 100, the pixel definition layer 101 having a plurality of pixel openings 103. Each pixel opening 103 corresponds to one anode 104, exposing at least a portion of the corresponding anode 104. Sub-pixels are correspondingly disposed on the pixel openings 103. The display panel includes three types of sub-pixels with different emission colors: red sub-pixel R, green sub-pixel G, and blue sub-pixel B, each sub-pixel corresponding to one pixel opening 103. A plurality of support pillars 102 are formed on the surface of the pixel definition layer 101 facing away from the substrate 100.

[0045] like Figure 2 As shown, in a conventional OLED display panel, when depositing the light-emitting layer of a sub-pixel within the pixel opening 103, multiple support pillars 102 for supporting a fine metal mask need to be fabricated on the surface of the pixel definition layer 101. The support pillars 102 are uniformly distributed on the surface of the pixel definition layer 101 and can only be located in areas far from the pixel opening 103 to reduce the impact of the pixel opening 103 on the stability of the support pillars 102. To ensure strength, rigid display panels require a certain density of support pillars 102; therefore, the support pillars 102 are mostly elongated designs. Rectangular support pillars 102 can achieve a higher density than square designs, with a density distribution of approximately 10%.

[0046] exist Figure 1 and Figure 2 In the illustrated method, the support pillar 102 is made of a different material than the pixel definition layer 101, so a separate fabrication process for the support pillar is required. Specifically, the support pillar 102 with the required pattern structure needs to be formed through coating and photolithography processes, which makes the fabrication process complex and increases the cost.

[0047] To solve the above problems, one can do as follows: Figure 3 and Figure 4 As shown, support pillars 102 are prepared using pixel definition layer 101.

[0048] refer to Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of another layout of pixel apertures and support pillars in an OLED display panel. Figure 4 for Figure 3 The image shows a cross-sectional view of the OLED display panel along line A-A'. (Compared to...) Figure 1 and Figure 2The difference shown is that, Figure 3 and Figure 4 In the OLED display panel shown, the support pillars 102 can be directly prepared through the pixel definition layer 101. This eliminates the need for a separate film layer to prepare the support pillars 102, simplifying the manufacturing process and reducing costs.

[0049] When using the pixel definition layer 101 to fabricate the support pillar 102, the support pillar 102 is prone to collapse. The inventors discovered that this problem arises because the organic material used to fabricate the pixel definition layer 101 has a certain degree of fluidity before final curing. This organic material overflows from a relatively high position on the support pillar 102 towards the adjacent pixel opening 103. The greater the distance between the support pillar 102 and the adjacent pixel opening 103, the easier the overflow, resulting in a lower height for the support pillar 102. Figure 3 As shown, since the support column 102 is opposite to one apex of the left adjacent pixel opening 103 and opposite to one side of the right adjacent pixel opening 103, the overflow degree on the left and right sides of the support column 102 is different. As a result, the support column 102 is prone to collapse due to the different forces exerted by the two adjacent pixel openings 103.

[0050] In addition, in this method, some support columns 102 (such as...) Figure 4 The one on the left side of the middle section is positioned between two pixel openings 103 with a small spacing. The distance between this part of the support pillar 102 and the adjacent pixel opening 103 is small. Another part of the support pillar 102 (such as...) Figure 4 The support pillar 102 on the right side is positioned between two pixel openings 103 with a relatively large spacing. The distance between this support pillar 102 and the adjacent pixel opening 103 is relatively large. Because the greater the distance between the support pillar 102 and the adjacent pixel opening 103, the easier it is for overflow to occur. Figure 4 As shown by the horizontal dashed line, the height of the support column 102 on the left is larger, while the height of the support column 102 on the right is smaller. This results in uneven heights of the support columns 102 in the display panel, which affects the support effect of the support columns 102 on the mask and thus affects the evaporation quality of the light-emitting layer.

[0051] refer to Figure 5 , Figure 5 for Figure 3The cross-sectional view of the display panel shows that the sidewalls of the support pillars 102 are not strictly perpendicular to the upper surface of the pixel definition layer 101. The sidewalls of the support pillars 102 have a certain tilt angle b relative to the plane where the pixel definition layer 101 is located. This tilt angle b is greater than 0° and less than 90°. As described above, due to the presence of support pillars 102 with varying degrees of overflow in the display panel, not only is the height uniformity of each support pillar 102 in the display panel poor, but the uniformity of the sidewall tilt angle b is also poor. This affects the uniformity of the support effect of each support pillar 102 on the photomask, and thus affects the evaporation quality of the light-emitting layer.

[0052] In view of this, embodiments of this application provide a display panel, including:

[0053] Substrate;

[0054] An anode metal layer is located on one side surface of a substrate and includes multiple anodes.

[0055] A pixel definition layer is disposed on the side of the anode metal layer facing away from the substrate.

[0056] The pixel definition layer includes:

[0057] Multiple pixel openings are provided corresponding to the anode, and the pixel openings expose at least a portion of the corresponding anode;

[0058] Multiple first protrusions are located on the side surface of the pixel definition layer away from the substrate, and the first protrusions are located between two adjacent pixel openings in a first direction, which is parallel to the plane of the substrate.

[0059] The first protrusion has a first vertical projection on the plane where the substrate is located, and the pixel opening has a second vertical projection on the plane; in the first direction, the first vertical projection is parallel to the two adjacent second vertical projections.

[0060] In this embodiment, the pixel definition layer includes a first protrusion, which can serve as a support pillar for supporting the photomask. Therefore, this application can utilize the film material of the pixel definition layer to fabricate the support pillar. The first protrusion, acting as a support pillar, can be fabricated simultaneously with the pixel definition layer for the desired pattern, eliminating the need for a separate film layer to fabricate the support pillar. This simplifies the display panel fabrication process and reduces costs. Furthermore, in the first direction, since the first vertical projection is parallel to two adjacent second vertical projections, the overflow difference between the two adjacent pixel openings and the first protrusion between them can be reduced. This balances the force exerted by the two adjacent pixel openings on the first protrusion in the first direction of the pixel definition layer, improving the stability of the first protrusion and preventing collapse due to uneven force.

[0061] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0062] refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram illustrating the layout of pixel openings and a first protrusion in a display panel according to an embodiment of this application. Figure 7 for Figure 6 The diagram shows a cross-sectional view of the display panel along Q-Q'. The display panel includes: a substrate 100; an anode metal layer located on one side surface of the substrate 100 and including a plurality of anodes 104; and a pixel definition layer 101 disposed on the side of the anode metal layer opposite to the substrate.

[0063] The pixel definition layer 101 includes: a plurality of pixel openings 103 corresponding to the anode, each pixel opening 103 corresponding to a sub-pixel, and each pixel opening 103 exposing at least a portion of the corresponding anode 104; a plurality of first protrusions 105, each first protrusion 105 located on a side surface of the pixel definition layer 101 facing away from the substrate 100, and each first protrusion 105 located between two adjacent pixel openings 103 in a first direction F1, the first direction F1 being parallel to the plane of the substrate 100; each first protrusion 105 having a first vertical projection in the plane of the substrate 100, and each pixel opening 103 having a second vertical projection in the plane; in the first direction F1, the first vertical projection is parallel to two adjacent second vertical projections. Figure 7 As shown in the embodiments of this application, the first protrusion 105 and the pixel definition layer 101 are made of the same material. Therefore, the pixel definition layer 101 and the first protrusion 105 can be fabricated using the same process.

[0064] For two adjacent pixel openings 103 in the first direction F1, the two second vertical projections corresponding to the two pixel openings 103 each have an edge perpendicular to the first direction F1, and the edges of the two second vertical projections perpendicular to the first direction F1 are parallel to each other; the first vertical projection of the first protrusion 105 is located between the two parallel sides of the two second vertical projections; the first vertical projection has two parallel sides perpendicular to the first direction F1, and the two sides of the first vertical projection perpendicular to the first direction F1 are parallel to the edge of an adjacent second vertical projection, so that the first vertical projection is parallel to the two adjacent second vertical projections in the first direction F1.

[0065] In the display panel provided in this application embodiment, the first protrusion 105 can serve as a support pillar for supporting the photomask. Therefore, the support pillar can be fabricated using the film material of the pixel definition layer 101. The first protrusion 105, serving as the support pillar, can be fabricated simultaneously with the pixel definition layer 101 of the desired pattern, eliminating the need for a separate film layer to fabricate the support pillar. This simplifies the manufacturing process of the display panel and reduces costs. In the first direction F1, since the first vertical projection is parallel to the two adjacent second vertical projections, the overflow difference between the two adjacent pixel openings 103 and the first protrusion 105 between them can be reduced. This can balance the force exerted by the two adjacent pixel openings 103 in the pixel definition layer 101 on the first protrusion 105 between them in the first direction F1, improving the stability of the first protrusion 105 and preventing collapse due to uneven force.

[0066] In some embodiments, based on other embodiments, in the first direction F1, the minimum distance between the first protrusion 105 and the two adjacent pixel openings 103 in the first direction F1 is greater than 3μm, that is, the minimum distance between adjacent first vertical projections and second vertical projections is greater than 3μm. For example Figure 6 and Figure 7 As shown, in the first direction F1, the minimum distances between the first protrusion 105 and the two adjacent pixel openings 103 are D1 and D2, respectively, where D1 > 3μm and D2 > 3μm. This method can avoid the interference between the etching of the pixel openings 103 and the first protrusion 105 during the etching of the pixel definition layer 101 due to the small distance between the first protrusion 105 and the pixel openings 103, thus avoiding the etching interference affecting the graphic morphology of both and also preventing the etching interference from affecting the stability of the first protrusion 105.

[0067] Optionally, based on other methods, in the first direction F1, the minimum distance between the first protrusion 105 and the two adjacent pixel openings 103 is equal, i.e., D1=D2. When the distance between the first protrusion 105 and the two adjacent pixel openings 103 in the first direction F1 is equal, it facilitates the design of the distance between the first protrusion 105 and the two adjacent pixel openings 103, and also allows the two pixel openings 103 to exert a more uniform force on the first protrusion 105 between them, so that the first protrusion 105 has better stability.

[0068] Furthermore, D1=D2>3μm can be set. In this way, not only can the etching interference between the first protrusion 105 and the adjacent pixel opening 103 on the first direction F1 be effectively avoided, but the difference in the force exerted by the two pixel openings 103 on the first protrusion 105 can also be reduced, thereby improving the stability of the first protrusion 105.

[0069] In some implementations, based on other implementations, such as Figure 7 As shown, the first vertical projection is a rectangle, with its long side perpendicular to the first direction F1. For a given display panel, the distance between two adjacent pixel openings 103 along the first direction F1 is a fixed value. In this method, since the long side of the rectangle corresponding to the first vertical projection is perpendicular to the first direction F1, the short side of the rectangle corresponding to the first vertical projection can be made parallel to the first direction F1. When the distance between two adjacent pixel openings 103 along the first direction F1 is determined, the two adjacent second vertical projections of the first vertical projection can have a larger minimum spacing, that is, larger D1 and D2. This can better reduce the etching interference between the first protrusion 105 and the two adjacent pixel openings 103, thereby improving the stability of the first protrusion 105.

[0070] In some embodiments of this application, based on other embodiments, when the first vertical projection is a rectangle, the aspect ratio of the rectangle is set to be no greater than 1.5, such as... Figure 6 As shown, the length of the first vertical projection is L and the width is W. Then L / W≤1.5, which can improve the stability of the first protrusion 105 and prevent the collapse problem caused by the large length-to-width ratio and the scratching problem of the first protrusion 105 on the mask.

[0071] Optionally, in some embodiments of this application, the spacing between two adjacent pixel openings 103 is the same in the first direction F1. This allows each first protrusion 105 to be located between two pixel openings 103 with the same spacing, ensuring that different first protrusions 105 correspond to the same overflow degree and that different first protrusions 105 have relatively consistent height and sidewall angle.

[0072] The display panel includes multiple sub-pixels that correspond one-to-one with the pixel openings 103. The multiple sub-pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Each pixel opening 103 has one corresponding sub-pixel.

[0073] Optionally, a first protrusion 105 may be provided between the pixel openings 103 corresponding to the first and second sub-pixels adjacent to F1 in the first direction. The first sub-pixel is one of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and the second sub-pixel is the other of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0074] exist Figure 6In the illustrated configuration, one of the first and second sub-pixels is a red sub-pixel R, and the other is a green sub-pixel G. Generally, to improve display uniformity, the blue sub-pixel B has the largest light-emitting area. That is, the size of the pixel opening 103 corresponding to the blue sub-pixel B is larger than the size of the pixel opening 103 corresponding to the red sub-pixel R, and also larger than the size of the pixel opening 103 corresponding to the green sub-pixel G. Therefore, the distance between the pixel openings 103 corresponding to adjacent red sub-pixels R and green sub-pixels G is relatively large. Setting a first protrusion 105 in the area corresponding to this distance can make the distance between the first protrusion 105 and the two adjacent pixel openings 103 larger, thereby reducing the degree of etching interference between the first protrusion 105 and the pixel opening 103.

[0075] In a display panel, because the luminous efficiency of the organic light-emitting materials of sub-pixels of different emitting colors is different, in order to improve the display uniformity of the display panel, the red sub-pixel R, green sub-pixel G, and blue sub-pixel B each correspond to pixel openings 103 of different areas, so that sub-pixels of different emitting colors have different light-emitting areas. For example... Figure 6 As shown, the areas of the pixel openings 103 corresponding to the red sub-pixel R, green sub-pixel G, and blue sub-pixel B increase sequentially. The two pixel openings 103 corresponding to adjacent first and second sub-pixels have a first overflow degree with respect to the first protrusion 105 between them; the two pixel openings 103 corresponding to adjacent second and third sub-pixels have a second overflow degree with respect to the first protrusion 105 between them; and the two pixel openings 103 corresponding to adjacent first and third sub-pixels have a third overflow degree with respect to the first protrusion 105 between them. Due to the different spacing between sub-pixels and the different areas of the pixel openings 103 corresponding to the sub-pixels, the first, second, and third overflow degrees are different.

[0076] When a first protrusion 105 is provided between the pixel opening 103 corresponding to the first sub-pixel and the second sub-pixel adjacent to F1 in the first direction, each first protrusion 105 can be located between the pixel opening 103 corresponding to the first sub-pixel and the second sub-pixel, and each first protrusion 105 can correspond to the first overflow degree, thereby avoiding the difference in height and side wall tilt angle caused by the different overflow degree of each first protrusion 105, and improving the height uniformity and side wall tilt angle uniformity of the first protrusion 105.

[0077] In some embodiments of this application, based on other embodiments, the area of ​​the first protrusion 105 in the display area of ​​the display panel is not less than 6%, that is, the area of ​​all the first protrusions 105 in the display area is not less than 6% of the display area, so as to avoid the problem of insufficient support for the mask due to the small area of ​​the first protrusions 105.

[0078] refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. Figure 9 for Figure 8 The diagram shows a cross-sectional view of the display panel along C-C'. In other embodiments, the display panel further includes a pixel circuit 107, with an anode 104 connected to the pixel circuit 107 via a conductive hole 106. The conductive hole 106 is located between two adjacent pixel openings 103 in the second direction F2. The second direction F2 is parallel to the plane of the substrate 100 and intersects with the first direction F1.

[0079] When the anode 104 and the conductive hole 106 connecting the pixel circuit 107 and the first protrusion 105 are located in different sub-pixel gaps, the conductive hole 106 and the first protrusion 105 can be prevented from overlapping in the direction perpendicular to the plane of the substrate 100, and the two can be made to have a large distance in the direction parallel to the plane of the substrate 100. This reduces the force exerted by the conductive hole 106 on the first protrusion 105, and prevents the first protrusion 105 from collapsing due to the small distance between the conductive hole 106 and the first protrusion 105. This also prevents the conductive hole 106 from affecting the stability of the first protrusion 105.

[0080] like Figure 9 As shown, the substrate 100 includes a base 111, which can be a rigid base, such as a glass plate or a rigid plastic plate, or a flexible base, such as a polyimide base or a polyester base. A circuit layer 108 is disposed on the surface of the base 111, and the circuit layer 108 includes pixel circuits 107. An anode metal layer and a pixel definition layer 101 are disposed on the side of the circuit layer 108 opposite to the base 111. A sub-pixel 109 is correspondingly disposed in the pixel opening 103 of the pixel definition layer 101. The sub-pixel 109 includes an organic light-emitting layer 110 located within the pixel opening 103, and the organic light-emitting layer 110 is located on the surface of the anode 104 exposed by the pixel opening 103. The sub-pixel 109 also includes a shared cathode 112.

[0081] In some embodiments of this application, based on other embodiments, the distance between the first protrusion 105 and the adjacent conductive hole 106 is greater than 3μm in the direction parallel to the plane of the substrate 100. In this way, the distance between the first vertical projection and the vertical projection of the conductive hole 106 on the plane of the substrate 100 is greater than 3μm, which can avoid the conductive hole 106 from generating large stress on the first protrusion 105 due to the small distance between the conductive hole 106 and the first protrusion 105, and avoid the first protrusion 105 from collapsing due to such stress.

[0082] refer to Figure 10 , Figure 10 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. The diagram is for clarity. Figure 10 Only the first pixel opening 1031 and the second pixel opening 1032 adjacent to each other on the first direction F1, and the first protrusion 105 located between the first pixel opening 1031 and the second pixel opening 1032 are shown.

[0083] Based on other methods, Figure 10 In the display panel shown, the multiple pixel openings 103 of the display panel include a first pixel opening 1031 and a second pixel opening 1032 that are adjacent in the first direction F1; the first pixel opening 1031 corresponds to a first sub-pixel, and the second pixel opening 1032 corresponds to a second sub-pixel; the first sub-pixel and the second sub-pixel emit different colors of light. Optionally, one of the first sub-pixel and the second sub-pixel is a red sub-pixel R, and the other is a green sub-pixel G.

[0084] like Figure 10 As shown, the pixel definition layer 101 between the first pixel opening 1031 and the second pixel opening 1032 includes a first protrusion 105; the second vertical projection corresponding to the first pixel opening 1031 has a first side S1, and the second vertical projection corresponding to the second pixel opening 1032 has a second side S2, with the first side S1 and the second side S2 being parallel and opposite to each other in the first direction F1; the first vertical projection corresponding to the first protrusion 105 is located between the first side S1 and the second side S2, and the first vertical projection has a third side S3 that is parallel and opposite to the first side S1 and a fourth side S4 that is parallel and opposite to the second side S2; the length of the first side S1 is A1, the length of the second side S2 is A2, the length of the third side S3 is B1, and the length of the fourth side S4 is B2; wherein, A1 > A2, and B1 > B2.

[0085] For the pixel opening 103 adjacent to the first protrusion 105, the larger the side length of the second vertical projection opposite to the first projection, the greater the range of influence on the stability of the first protrusion 105. Therefore, unlike the first vertical projection which has a rectangle, Figure 10 In the illustrated configuration, the lengths of the two adjacent sides (the third surface S3 and the fourth side S4) of the first vertical projection on the first direction F1 are related to the side lengths of the adjacent second vertical projections. This can balance the forces exerted by pixel openings 103 of different sizes on the first protrusion 105, thereby better ensuring the stability of the first protrusion 105.

[0086] Generally, for the first and second sub-pixels with different emission colors, the sizes of the first pixel opening 1031 and the second pixel opening 1032 are different, A1≠A2, when A1>A2 and B1>B2.

[0087] Optionally, K1 is a set positive constant. Thus, the ratio of the length of the third side S3 to the length of the fourth side S4 is... The ratio of the length of the first side S1 to the length of the second side S2 A positive correlation can better control the force exerted by the first pixel opening 1031 and the second pixel opening 1032 on the first protrusion 105 between them, thus ensuring the stability of the first protrusion 105. K1 is a known preset positive constant, which can be an empirical constant.

[0088] As described above, the first vertical projection can also be a rectangle. When A1 > A2, B1 = B2 can be set.

[0089] Based on other implementations, B1 > A1, B2 > A2, the vertical projection of the first side S1 onto the third side S3 is located between the two ends of the second side S2, and the vertical projection of the second side S2 onto the fourth side S4 is located between the two ends of the fourth side S4. This allows the ends of both the third side S3 and the fourth side S4 to be far from their corresponding pixel openings 103, reducing the overflow effect of adjacent pixel openings 103 on the first protrusion 105 and improving the stability of the first protrusion 105.

[0090] refer to Figure 11 , Figure 11 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. The diagram is for clarity. Figure 11 Only the first pixel opening 1031 and the second pixel opening 1032 adjacent to each other on the first direction F1, and the first protrusion 105 located between the first pixel opening 1031 and the second pixel opening 1032 are shown.

[0091] Based on other methods, Figure 11 In the display panel shown, for the first pixel opening 1031 and the second pixel opening 1032 that are adjacent in the first direction F1, the first side S1 of the second vertical projection corresponding to the first pixel opening 1031 and the second side S2 of the second vertical projection corresponding to the second pixel opening 1032 are parallel and opposite to each other in the first direction F1. The length of the first side S1 is A1, and the length of the second side S2 is A2. A first protrusion 105 is provided between the first pixel opening 1031 and the second pixel opening 1032. The distance between the first vertical projection corresponding to the first protrusion 105 and the first side S1 is D1, and the distance between the first vertical projection and the second side S2 is D2. Wherein, A1 > A2, and D1 > D2.

[0092] Figure 11Taking a rectangle as an example, the second vertical projection has a third side S3 parallel to the first side S1 and a fourth side S4 parallel to the second side S2. The distance between the first side S1 and the third side S3 is D1, and the distance between the second side S2 and the fourth side S4 is D2. In other methods, the lengths of the third side S2 and the fourth side S4 in the second vertical projection can also be unequal, such as setting A1 > A2 and B1 > B2. In this case, the second vertical projection can be a trapezoid.

[0093] For the pixel opening 103 adjacent to the first protrusion 105, the larger the side length of the second vertical projection relative to the first projection, the greater the range of influence on the stability of the first protrusion 105. Therefore, in Figure 11 In the arrangement shown, A1 > A2 and D1 > D2, which can balance the forces exerted by the first side S1 and the second side S2 on the first protrusion 105 between them, thereby improving the stability of the first protrusion 105.

[0094] Optionally, K2 is a set normal value. Thus, for adjacent first pixel openings 1031 and 1032 on the first direction F1, and the first protrusion 105 located between them, the distance ratio between the first vertical projection and the distance between two adjacent second vertical projections is... The ratio of the side lengths of the first vertical projection to the two second vertical projections A positive correlation can better control the force exerted by the first pixel opening 1031 and the second pixel opening 1032 on the first protrusion 105 between them, thus ensuring the stability of the first protrusion 105. K2 is a known preset positive constant, which can be an empirical constant.

[0095] refer to Figure 12 , Figure 12 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. Based on other implementation methods... Figure 12 In the display panel shown, the pixel definition layer 101 further includes a second protrusion 113. The second protrusion 113 is located between two adjacent pixel openings 103 on the second direction F2, which is parallel to the plane of the substrate 100 and intersects with the first direction F1. In this manner, by adding a second protrusion 113 between two adjacent pixel openings 103 on the second direction F1, the area ratio of the support structure on the surface of the pixel definition layer 101 can be increased, thereby improving the support stability and strength of the mask.

[0096] When the pixel definition layer 101 further includes a second protrusion 113, the second protrusion 113 has a third vertical projection on the plane where the substrate 100 is located, such as... Figure 12As shown, the first vertical projection and the second vertical projection can be set to have identical geometric shapes, and the first protrusion 105 and the second protrusion 113 have the same geometric structure, which facilitates the fabrication process of the pixel definition layer 101 and reduces the fabrication process difficulty of the display panel.

[0097] Optionally, the total area of ​​the first protrusion 105 is greater than that of the second protrusion 113. In this way, the area of ​​the first protrusion 105, which has higher stability, is larger, thereby improving the support stability and reliability of the photomask.

[0098] refer to Figure 13 , Figure 13 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. Based on other implementation methods... Figure 13 In the display panel shown, the pixel definition layer 101 also includes a second protrusion 113, which can increase the area ratio of the support structure on the surface of the pixel definition layer 101, thereby improving the support stability and strength of the mask. Additionally, with... Figure 12 The difference shown is that, Figure 13 In the display panel shown, the first vertical projection and the third vertical projection have similar geometry, and the area of ​​the third vertical projection is larger than the area of ​​the first vertical projection. This method can improve the support stability and strength of the mask by increasing the area of ​​the second protrusion 113.

[0099] In other methods, the third vertical projection can be dissimilar to the first vertical projection. In this case, the third vertical projection and the first vertical projection can be different geometric shapes, such as the first vertical projection being a rectangle, and the third vertical projection being any one of a square, circle, or triangle. This method allows for more diverse design of the graphic structure of the second protrusion 113, making it easier to adjust the distribution and area ratio of the protrusion structure through the second protrusion 113 to better adjust the support performance on the mask.

[0100] In some embodiments of this application, based on other embodiments, such as Figure 12 or Figure 13 As shown, both the first and third vertical projections are rectangles; the minimum angle between the long side of the first vertical projection and the long side of the third vertical projection is 45°. In this method, the long sides of the first protrusion 105 and the second protrusion 113 have different directions. The long side of the first protrusion 105 is perpendicular to the first direction, and the long side of the second protrusion 113 is perpendicular to the second direction. The minimum angle between their long sides is 45°, which allows the first protrusion 105 to have a larger distance from the two adjacent pixel openings 103 in the first direction F1, and the second protrusion 113 to have a larger distance from the two adjacent pixel openings 103 in the second direction F2, thereby improving the stability of the first protrusion 105 and the second protrusion 113.

[0101] Optionally, the aspect ratio of the rectangles corresponding to the first protrusion 105 and the second protrusion 113 can both be less than 1.5.

[0102] exist Figure 1 , Figure 3 , Figure 6 , Figure 8 , Figure 12 and Figure 13 In the configuration shown, the subpixels in the display panel are arranged in a pyramid pattern.

[0103] refer to Figure 14 , Figure 14 This is a schematic diagram of a sub-pixel arrangement in a display panel provided in an embodiment of this application. Based on other methods, Figure 14 In the illustrated configuration, the pixel definition layer 101 has multiple pixel openings 103 arranged in a dot matrix, and each pixel opening 103 corresponds to a sub-pixel 109. The display panel includes multiple pyramid pixel units arranged in an array. The pyramid pixel units are as follows... Figure 14 As shown by the dashed triangle, this includes three sub-pixels 109, each emitting a different color: red (R), green (G), and blue (B). In this configuration, the first direction F1 intersects both the row direction X and the column direction Y of the pyramid pixel array. The first direction F1 can include... Figure 14 At least one of the dashed arrows. The first direction F1 is tilted at 45° relative to the row direction X and the column direction Y.

[0104] exist Figure 14 In the illustrated configuration, the display panel includes three types of sub-pixels 109 with distinct emission colors: red sub-pixel R, green sub-pixel G, and blue sub-pixel B. The display panel comprises M rows of sub-pixels 109, where M is a positive integer. Within the same row, any three consecutive sub-pixels 109 emit different emission colors. For rows 2i-1 and 2i, the j-th sub-pixel in row 2i is located between the j-th and (j+1)-th sub-pixels in row 2i-1, ensuring a staggered arrangement of sub-pixels 109 in adjacent rows, forming a configuration as shown. Figure 14 The pyramid distribution design is shown. Here, j is a positive integer, not greater than J, where J is the number of 109 sub-pixels in a row; i is a positive integer, and 2i is not greater than M.

[0105] refer to Figure 15 , Figure 15 This is a schematic diagram illustrating another layout of pixel openings and a first protrusion in a display panel provided in an embodiment of this application. Based on other implementation methods... Figure 15In the display panel shown, the pixel definition layer 101 has multiple pixel openings 103 arranged in a dot matrix, and each pixel opening 103 corresponds to a sub-pixel 109. The first protrusion 105 in the pixel definition layer 101 is located between two adjacent pixel openings 103 in the first direction F1. The sub-pixels 109 in the display panel adopt... (pi) arrangement, the display panel includes multiple arrays arranged in a pi configuration. Pixel unit (e.g.) Figure 15 (As shown in the dashed rectangle). The pixel unit includes three sub-pixels 109, each emitting a different color. The first direction F1 may include... At least one of the row direction X and column direction Y of the pixel unit array. Figure 15 The diagram is illustrated using the first direction F1 as an example, which is the row direction X.

[0106] exist Figure 15 In the illustrated configuration, the display panel includes three sub-pixels 109 with different luminous colors: red sub-pixel R, green sub-pixel G, and blue sub-pixel B. (The last sentence appears to be incomplete and possibly refers to a different configuration.) In a pixel unit, red sub-pixels R and green sub-pixels G are alternately arranged along the same straight line in the column direction Y. Blue sub-pixels B are located on the same straight line in the column direction Y, but blue sub-pixels B are on a different straight line than red sub-pixels R and green sub-pixels G. (The last sentence appears to be incomplete and possibly refers to a different pixel.) In a pixel unit, the red sub-pixel R is located on the same straight line along the row direction X, and the green sub-pixel G is located on the same straight line along the row direction X, but the red sub-pixel R and the green sub-pixel G are located on different straight lines.

[0107] refer to Figure 16 , Figure 16 This is a schematic diagram of a sub-pixel arrangement in a display panel provided in an embodiment of this application. Based on other methods, Figure 16 In the illustrated configuration, the pixel definition layer 101 has multiple pixel openings 103 arranged in a dot matrix, and each pixel opening 103 is correspondingly provided with a sub-pixel 109. The display panel includes multiple windmill-shaped pixel units arranged in an array (such as...). Figure 16 (As shown in the large dashed box). In this method, each sub-pixel 109 in the display panel adopts a windmill arrangement. A windmill-shaped pixel unit includes two sub-pixel units (such as...). Figure 16(As shown in the small dashed box), each sub-pixel unit includes four sub-pixels 109. Within the same windmill-shaped pixel unit, one sub-pixel unit includes two red sub-pixels R and two blue sub-pixels B. The four sub-pixels 109 are located at the four vertices of the same rectangle, with the two red sub-pixels R and the two blue sub-pixels B diagonally distributed. Another sub-pixel unit includes four green sub-pixels G distributed within the same rectangle. In this configuration, the first direction F1 intersects both the row direction X and the column direction Y of the windmill-shaped pixel unit array. The first direction F1 may include... Figure 16 At least one of the dashed arrows. The first direction F1 is tilted at 45° relative to the row direction X and the column direction Y.

[0108] exist Figure 16 In the illustrated configuration, the display panel includes three types of sub-pixels 109 with different luminous colors: red sub-pixel R, green sub-pixel G, and blue sub-pixel B. The display panel comprises M rows of sub-pixels 109, where M is a positive integer. The sub-pixels 109 in the (2i-1)th row are alternating red sub-pixels R and blue sub-pixels B, while the sub-pixels 109 in the 2ith row are all green sub-pixels. For the (2i-1)th and 2ith rows, the j-th sub-pixel in the 2ith row is located between the j-th and (j+1)-th sub-pixels in the (2i-1)th row, and the j-th sub-pixel in the (2i-1)th row and the j-th sub-pixel in the 2ith row are respectively red sub-pixel R and blue sub-pixel B, so that the sub-pixels 109 in adjacent rows are staggered, forming a configuration as shown below. Figure 16 The windmill layout design is shown. Here, j is a positive integer, not greater than J, where J is the number of 109 sub-pixels in a row; i is a positive integer, and 2i is not greater than M.

[0109] like Figure 16 As shown, the display panel has multiple pixel openings 103, including a first pixel opening 1031, a second pixel opening 1032, and a third pixel opening 1033. The first pixel opening 1031, the second pixel opening 1032, and the third pixel opening 1033 correspond to sub-pixels 109 of different luminous colors. When the display panel simultaneously has a first protrusion 105 and a second protrusion 113, the first protrusion 105 is located between the first pixel opening 1031 and the second pixel opening 1032; the second protrusion 113 is located between the second pixel opening 1032 and the third pixel opening 1033. Figure 16 In the illustrated method, the first pixel opening 1031 corresponds to the blue sub-pixel R, the second pixel opening 1032 corresponds to the green sub-pixel G, and the third pixel opening 1033 corresponds to the red sub-pixel as an example for illustration.

[0110] refer to Figure 17 , Figure 17This is a cross-sectional view of a display panel provided in an embodiment of this application. The first protrusion 105 is located between two adjacent pixel openings 103 in the first direction F1. In the cross-sectional view parallel to the first direction F1, the sidewall tilt angle b of the first protrusion 105 and the sidewall tilt angle d of the pixel opening 103 are both 10°~30°.

[0111] In conventional techniques, if the support column is made of a single material, the sidewall tilt angle of the support column and the sidewall tilt angle of the pixel opening 103 are both relatively large.

[0112] When the pixel opening 103 and the first protrusion 105 are integrally fabricated through the pixel definition layer 101, compared with the support column fabricated by conventional separate materials, the side wall tilt angle b of the first protrusion 105 and the side wall tilt angle d of the pixel opening 103 are relatively small. This allows the side wall tilt angle b of the first protrusion 105 to match the side wall tilt angle d of the pixel opening 103, thereby reducing the difference in the force exerted by the two pixel openings 103 on the first protrusion 105 and improving the stability of the first protrusion 105.

[0113] Since the pixel opening 103 and the first protrusion 105 are fabricated based on the same exposure process, in order to ensure the exposure intensity of the lower pixel opening 103 and prevent insufficient exposure in the corresponding area of ​​the pixel opening 103 with a larger depth from affecting the morphology of the pixel opening 103, the sidewall tilt angle d of the pixel opening 103 can be set to be greater than the sidewall tilt angle b of the first protrusion 105.

[0114] Based on the display panel provided in the above embodiments, another embodiment of this application also provides an electronic device, the structure of which can be as follows: Figure 18 As shown.

[0115] refer to Figure 18 , Figure 18 This is a schematic diagram of an electronic device provided in an embodiment of this application. The electronic device includes a display panel 114 as described in any of the preceding embodiments. The electronic device can be any electronic device with display function, such as a mobile phone, tablet computer, or wearable device.

[0116] Based on the display panel provided in the above embodiments, another embodiment of this application also provides a method for manufacturing the display panel, the method being as follows: Figure 19 As shown.

[0117] refer to Figure 19 , Figure 19 A schematic flowchart of a preparation method provided in this application embodiment includes:

[0118] Step S11: Provide a substrate 100;

[0119] Step S12: A patterned anode 104 metal layer is formed on one side surface of the substrate, the anode 104 metal layer including a plurality of anodes 104;

[0120] Step S13: Form an initial pixel definition layer on one side of the substrate 100;

[0121] Step S14: A pixel definition layer with the desired pattern structure is formed in the initial pixel definition layer using a half-grayscale mask. The pixel definition layer includes: a plurality of pixel openings 103 corresponding one-to-one with the anode 104, the pixel openings 103 exposing at least a portion of the corresponding anode 104; a plurality of first protrusions 105, the side surface of the pixel definition layer facing away from the substrate 100 having the first protrusions 105, and the first protrusions 105 being located between two adjacent pixel openings 103 in the first direction F1, the first direction F1 being parallel to the plane of the substrate 100.

[0122] The first protrusion 105 has a first vertical projection on the plane where the substrate 100 is located, and the pixel opening 103 has a second vertical projection on the plane; in the first direction F1, the first vertical projection is parallel to the two adjacent second vertical projections.

[0123] The electronic devices and manufacturing methods disclosed in the above embodiments have the same or corresponding beneficial effects as the display panel embodiments, and will not be repeated here to avoid repetition.

[0124] The various embodiments in this application are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. The embodiments provided in this application can be combined with each other without contradiction.

[0125] It should be noted that, in the description of this application, the accompanying drawings and embodiments are illustrative rather than restrictive. The same reference numerals throughout the embodiments identify the same structures. Additionally, for ease of understanding and description, the thicknesses of some layers, films, panels, regions, etc., may be exaggerated in the drawings. It is also understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element or there may be intermediate elements. Furthermore, "on" means positioning an element on or below another element, but does not inherently mean positioning it above another element according to the direction of gravity.

[0126] The terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the middle.

[0127] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0128] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, include: Substrate; An anode metal layer is located on one side surface of the substrate and includes a plurality of anodes; A pixel definition layer disposed on the side of the anode metal layer opposite to the substrate. The pixel definition layer includes: A plurality of pixel openings are provided corresponding to the anode, and the pixel openings expose at least a portion of the portion corresponding to the anode; Multiple first protrusions are located on the side surface of the pixel definition layer facing away from the substrate, and the first protrusions are located between two adjacent pixel openings in a first direction, the first direction being parallel to the plane of the substrate. The first protrusion has a first vertical projection on the plane where the substrate is located, and the pixel opening has a second vertical projection on the plane; in the first direction, the first vertical projection is parallel to two adjacent second vertical projections.

2. The display panel according to claim 1, characterized in that, In the first direction, the minimum distance between the first protrusion and the two pixel openings adjacent to the first direction is greater than 3 μm.

3. The display panel according to claim 1, characterized in that, In the first direction, the first protrusion is equal to the minimum distance between the two adjacent pixel openings.

4. The display panel according to claim 1, characterized in that, The first vertical projection is a rectangle, and the long side of the rectangle is perpendicular to the first direction.

5. The display panel according to claim 4, characterized in that, The aspect ratio of the rectangle is no greater than 1.

5.

6. The display panel according to claim 1, characterized in that, Within the display area of ​​the display panel, the area of ​​the first protrusion accounts for no less than 6%.

7. The display panel according to claim 1, characterized in that, It also includes a pixel circuit, wherein the anode is connected to the pixel circuit through a conductive hole; The conductive hole is located between two adjacent pixel openings in the second direction; the second direction is parallel to the plane of the substrate and intersects with the first direction.

8. The display panel according to claim 7, characterized in that, In a direction parallel to the plane of the substrate, the distance between the first protrusion and the adjacent conductive hole is greater than 3 μm.

9. The display panel according to claim 1, characterized in that, The plurality of pixel openings includes a first pixel opening and a second pixel opening that are adjacent in the first direction; the first pixel opening corresponds to a first sub-pixel, and the second pixel opening corresponds to a second sub-pixel; the first sub-pixel and the second sub-pixel emit different colors; The pixel definition layer between the first pixel opening and the second pixel opening includes the first protrusion; the second vertical projection corresponding to the first pixel opening has a first side, and the second vertical projection corresponding to the second pixel opening has a second side, the first side and the second side being parallel to each other in the first direction; the first vertical projection corresponding to the first protrusion is located between the first side and the second side, and the first vertical projection has a third side parallel to the first side and a fourth side parallel to the second side; the length of the first side is A1, the length of the second side is A2, the length of the third side is B1, and the length of the fourth side is B2; Where A1 > A2 and B1 > B2.

10. The display panel according to claim 9, characterized in that, K1 is a set positive constant.

11. The display panel according to claim 1, characterized in that, The plurality of pixel openings includes a first pixel opening and a second pixel opening that are adjacent in the first direction; the first pixel opening corresponds to a first sub-pixel, and the second pixel opening corresponds to a second sub-pixel; the first sub-pixel and the second sub-pixel emit different colors; The pixel definition layer between the first pixel opening and the second pixel opening includes the first protrusion; the second vertical projection corresponding to the first pixel opening has a first side, and the second vertical projection corresponding to the second pixel opening has a second side, the first side and the second side being parallel and opposite to each other in the first direction; the first vertical projection corresponding to the first protrusion is located between the first side and the second side; the distance between the first vertical projection and the first side is D1, and the distance between the first vertical projection and the second side is D2; the length of the first side is A1, and the length of the second side is A2. Where A1 > A2 and D1 > D2.

12. The display panel according to claim 11, characterized in that, K2 is a set positive constant.

13. The display panel according to claim 1, characterized in that, The pixel definition layer further includes a second protrusion located between two adjacent pixel openings in a second direction, which is parallel to the plane of the substrate and intersects with the first direction.

14. The display panel according to claim 13, characterized in that, The second protrusion has a third vertical projection on the plane where the substrate is located; Wherein, the first vertical projection and the third vertical projection have identical geometry, or the first vertical projection and the third vertical projection have similar geometry, and the area of ​​the third vertical projection is greater than the area of ​​the first vertical projection.

15. The display panel according to claim 14, characterized in that, The second protrusion has a third vertical projection on the plane of the substrate; both the first vertical projection and the third vertical projection are rectangles; the minimum angle between the long side of the first vertical projection and the long side of the third vertical projection is 45°.

16. The display panel according to claim 13, characterized in that, The second protrusion has a third vertical projection on the plane of the substrate; the geometry of the first vertical projection and the third vertical projection are not similar.

17. The display panel according to claim 1, characterized in that, The sidewall tilt angle of the first protrusion and the sidewall tilt angle of the pixel opening are both 10°~30°.

18. The display panel according to claim 17, characterized in that, The sidewall tilt angle of the pixel opening is greater than the sidewall tilt angle of the first protrusion.

19. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1-18.

20. A method for manufacturing a display panel as described in any one of claims 1-18, characterized in that, include: Provide substrates; A patterned anode metal layer is formed on one side surface of the substrate, the anode metal layer comprising a plurality of anodes; An initial pixel definition layer is formed on one side of the substrate. A pixel definition layer with the desired graphic structure is formed in the initial pixel definition layer by using a half-grayscale mask. The pixel definition layer includes a plurality of pixel openings that correspond one-to-one with the anode, and the pixel openings expose at least a portion of the corresponding anode. The pixel definition layer has a plurality of first protrusions on the side surface opposite to the substrate, and the first protrusions are located between two adjacent pixel openings in a first direction, the first direction being parallel to the plane of the substrate; the first protrusions have a first vertical projection in the plane of the substrate, and the pixel openings have a second vertical projection in the plane; in the first direction, the first vertical projection is parallel to two adjacent second vertical projections.

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