Display panel, preparation method of display panel and electronic device

Abstract

This application provides a display panel, a method for manufacturing the display panel, and an electronic device, relating to the field of display technology. The display panel includes a substrate, a pixel defining layer, and an isolation layer. The isolation layer is located on one side of the substrate and includes an isolation structure and a touch electrode disposed on the same layer. The isolation structure encloses and forms multiple isolation openings. The touch electrode extends along a first direction. Along the first direction, the minimum distance between the edges of the orthogonal projections of the sides of two adjacent pixel openings away from the substrate on the substrate is a first dimension. Along a second direction, the minimum distance between the edges of the orthogonal projections of the sides of the isolation structure near the touch electrode and the sides of the pixel openings away from the substrate on the substrate is a second dimension, which is less than half the first dimension. This application can increase the width of the touch electrode, thereby increasing the touch area of ​​the display panel and thus improving its touch performance.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide application range, becoming the mainstream display panel. In the traditional display panel manufacturing process, a fine mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also has problems such as limited precision, high development costs, and long development cycles. Maskless technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance characteristics, offering advantages such as high performance, full-size display, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN117580403A, CN118678743A, CN118660490A, CN118678724A, CN118678806A, CN118742084A, and CN118946184A describe relevant content of maskless technology and are provided for reference.

[0003] However, there are still some problems with the display panel that need to be addressed. Summary of the Invention

[0004] To overcome the technical problems mentioned in the background, this application provides a display panel, which includes:

[0005] Substrate;

[0006] A pixel defining layer is located on one side of the substrate, and the pixel defining layer has pixel openings;

[0007] An isolation layer is located on the side of the pixel defining layer away from the substrate. The isolation layer includes an isolation structure and a touch electrode disposed on the same layer. The isolation structure is insulated from the adjacent touch electrode. The isolation structure encloses and forms a plurality of isolation openings, which are connected to the pixel openings.

[0008] Wherein, the touch electrode extends along a first direction, and along the first direction, the minimum distance between the edges of the orthogonal projections of the side of two adjacent pixel openings away from the substrate on the substrate is a first dimension; along a second direction, the minimum distance between the edges of the orthogonal projections of the side of the isolation structure near the touch electrode on the substrate and the edges of the orthogonal projections of the side of the pixel opening away from the substrate on the substrate is a second dimension, the second dimension being less than half of the first dimension, and the second direction intersecting the first direction.

[0009] In some possible implementations, along the second direction, the size of the orthographic projection of the touch electrode onto the substrate is greater than or equal to 10 μm and less than or equal to 12 μm;

[0010] Preferably, the touch electrode is configured as a self-capacitance detection electrode;

[0011] Preferably, the second direction is perpendicular to the first direction.

[0012] In some possible implementations, the display panel further includes a light-emitting unit located within the isolation opening, the light-emitting unit including a first electrode, a light-emitting portion and a second electrode sequentially stacked along a direction away from the substrate, with a portion of the second electrode overlapping the isolation structure;

[0013] Preferably, the orthographic projection of the side of the isolation structure facing the substrate onto the substrate includes a first edge and a second edge disposed opposite to each other, and a third edge and a fourth edge disposed opposite to each other. The orthographic projection of the second electrode onto the substrate is located outside the first edge and the second edge, and the third edge and the fourth edge are located within the orthographic projection of the second electrode onto the substrate.

[0014] Preferably, there are multiple isolation structures, which extend along the first direction and are arranged along the second direction. The display panel also includes connecting traces extending along the second direction, which are electrically connected to the multiple isolation structures arranged along the second direction.

[0015] In some possible implementations, the first edge and the second edge extend along the first direction;

[0016] Preferably, the third edge and the fourth edge extend along the second direction.

[0017] In some possible implementations, the dimensions of the first edge and the second edge extending along the first direction are smaller than the dimensions of the third edge and the fourth edge extending along the second direction;

[0018] Preferably, the first edge, the third edge, the second edge, and the fourth edge are connected sequentially.

[0019] In some possible implementations, the second dimension is greater than or equal to 3 μm and less than or equal to 5 μm;

[0020] Preferably, the first dimension is greater than or equal to 8 μm and less than or equal to 12 μm;

[0021] Preferably, the distance between the adjacent isolation structure and the orthographic projection of the touch electrode on the substrate is greater than or equal to 3 μm and less than or equal to 4 μm.

[0022] In some possible implementations, the display panel further includes a conductive layer located between the isolation layer and the substrate, the conductive layer including a plurality of conductive traces extending along the second direction, the plurality of conductive traces being electrically connected to the touch electrodes.

[0023] In some possible implementations, the number of touch electrodes is multiple, the multiple touch electrodes are arranged along the second direction, and the pattern formed by the orthographic projection of the multiple touch electrodes on the substrate and the orthographic projection of the multiple conductive traces on the substrate includes multiple grids;

[0024] Preferably, the display panel further includes light-emitting units located within the isolation opening. The light-emitting units include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors. The orthographic projections of an adjacent first light-emitting unit, a second light-emitting unit, and a third light-emitting unit on the substrate are located within a grid.

[0025] In some possible implementations, the conductive layer comprises multiple sub-conductive layers stacked sequentially in a direction away from the substrate, with the conductive trace located in the sub-conductive layer closest to the isolation structure;

[0026] Preferably, the conductive layer includes a first sub-conductive layer, a second sub-conductive layer, a third sub-conductive layer and a fourth sub-conductive layer stacked sequentially in a direction away from the substrate, and the conductive trace is located in the fourth sub-conductive layer;

[0027] Preferably, the display panel further includes an insulating layer located between the fourth sub-conductive layer and the isolation layer, and a first via is provided in the insulating layer along a direction perpendicular to the substrate;

[0028] Preferably, the pixel defining layer is located between the insulating layer and the isolation layer, and the pixel defining layer is provided with a second via, which communicates with the first via. The touch electrode is electrically connected to the conductive trace through the second via and the first via in sequence.

[0029] In some possible implementations, the isolation opening is formed on the side of the isolation structure away from the substrate, and the minimum distance between the edges of the orthographic projections of two adjacent isolation openings on the substrate along the first direction is a third dimension; along the second direction, the minimum distance between the orthographic projection of the side of the isolation structure near the touch electrode on the substrate and the edge of the orthographic projection of the isolation opening on the substrate is a fourth dimension, the fourth dimension being less than half of the third dimension.

[0030] In some possible implementations, the display panel further includes a light-emitting unit located within the isolation opening and a first encapsulation layer located on the side of the light-emitting unit away from the substrate. The first encapsulation layer includes a plurality of spaced-apart encapsulation units, at least a portion of which extends from the side of the isolation structure toward the isolation opening to the side of the isolation structure away from the substrate.

[0031] Preferably, adjacent packaging units are spaced apart on the side of the isolation structure away from the substrate;

[0032] Preferably, the display panel further includes a second encapsulation layer located on the side of the first encapsulation layer away from the substrate;

[0033] Preferably, the display panel further includes a third encapsulation layer located on the side of the second encapsulation layer away from the substrate;

[0034] Preferably, the materials of both the first encapsulation layer and the third encapsulation layer include inorganic materials;

[0035] Preferably, the material of the second encapsulation layer includes an organic material.

[0036] In some possible implementations, both the isolation structure and the touch electrode include a first isolation portion and a second isolation portion stacked sequentially along a direction away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate;

[0037] Preferably, the second isolation portion encloses and forms the isolation opening;

[0038] Preferably, the display panel further includes a light-emitting unit located within the isolation opening, wherein along the first direction, the second electrode of the light-emitting unit overlaps with the first isolation portion, and along the second direction, the orthographic projection of the second electrode of the light-emitting unit on the substrate is located outside the orthographic projection of the first isolation portion on the substrate; and / or, the isolation structure further includes a third isolation portion located on the side of the first isolation portion facing the substrate, wherein along the first direction, the second electrode overlaps with the third isolation portion, and along the second direction, the orthographic projection of the second electrode of the light-emitting unit on the substrate is located outside the orthographic projection of the third isolation portion on the substrate;

[0039] Preferably, the material of the third isolation portion includes molybdenum; and / or the material of the first isolation portion includes aluminum; and / or the material of the second isolation portion includes titanium.

[0040] In some possible implementations, this application also provides a display panel, the display panel comprising:

[0041] Substrate;

[0042] An isolation layer is located on one side of the substrate. The isolation layer includes an isolation structure and a touch electrode disposed on the same layer. The isolation structure is insulated from the adjacent touch electrode. The side of the isolation structure away from the substrate forms a plurality of isolation openings.

[0043] Wherein, the touch electrode extends along a first direction, and along the first direction, the minimum distance between the edges of the orthographic projections of two adjacent isolation openings on the substrate is a third dimension; along the second direction, the minimum distance between the orthographic projection of the side of the isolation structure near the touch electrode on the substrate and the edge of the orthographic projection of the isolation opening on the substrate is a fourth dimension, and the fourth dimension is less than half of the third dimension.

[0044] In some possible implementations, this application also provides a method for manufacturing a display panel, the display panel comprising:

[0045] Provide substrate;

[0046] A pixel defining layer is formed on one side of the substrate, and the pixel defining layer has pixel openings;

[0047] An isolation layer is formed on the side of the pixel defining layer away from the substrate. The isolation layer includes an isolation structure and a touch electrode disposed on the same layer. The isolation structure is insulated from adjacent touch electrodes. The isolation structure encloses and forms a plurality of isolation openings, which communicate with the pixel openings. The touch electrode extends along a first direction. Along the first direction, the minimum distance between the edges of the orthogonal projections of the sides of two adjacent pixel openings away from the substrate on the substrate is a first dimension. Along a second direction, the minimum distance between the edges of the orthogonal projections of the side of the isolation structure near the touch electrode on the substrate and the edges of the orthogonal projections of the side of the pixel opening away from the substrate on the substrate is a second dimension. The second dimension is less than half of the first dimension. The second direction intersects the first direction.

[0048] In some possible implementations, this application also provides an electronic device, which includes the display panel described in this application, or a display panel prepared by the method for preparing the display panel described in this application.

[0049] Compared with the prior art, this application has the following beneficial effects:

[0050] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By setting the second size to be less than half of the first size, the width of the touch electrode can be increased, thereby increasing the touch area of ​​the display panel and thus improving the touch performance of the display panel. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a top view of the isolation layer in the display panel provided in an embodiment of this application;

[0053] Figure 2 Provided for the embodiments of this application Figure 1 Schematic diagram of the cross section at point AA;

[0054] Figure 3 Provided for the embodiments of this application Figure 1 Schematic diagram of the cross section at point BB;

[0055] Figure 4This is a top view of the isolation layer, conductive traces, and connecting traces in the display panel provided in an embodiment of this application.

[0056] Figure 5 Provided for the embodiments of this application Figure 4 Schematic diagram of cross-section at CC;

[0057] Figure 6 One of the cross-sectional schematic diagrams of a display panel including a first encapsulation layer provided in the embodiments of this application;

[0058] Figure 7 A second cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including the first encapsulation layer;

[0059] Figure 8 One of the cross-sectional schematic diagrams of the display panel provided in the embodiments of this application, including a second encapsulation layer and a third encapsulation layer;

[0060] Figure 9 A second cross-sectional schematic diagram of the display panel provided in the embodiments of this application, including a second encapsulation layer and a third encapsulation layer;

[0061] Figure 10 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0062] Figure 11 A cross-sectional schematic diagram showing a first electrode layer formed on one side of a substrate, provided for an embodiment of this application;

[0063] Figure 12 A cross-sectional schematic diagram showing that a pixel defining material layer and an isolation material layer are sequentially formed on the side of the first electrode layer away from the substrate, as provided in an embodiment of this application;

[0064] Figure 13 This is a cross-sectional view of the isolation material layer and the pixel defining material layer after being patterned sequentially, as provided in the embodiments of this application.

[0065] Reference numerals: 1. Substrate; 2. Pixel defining layer; 21. Pixel opening; 22. Second via; 3. First electrode; 4. Light-emitting part; 5. Second electrode; 6. Isolation layer; 601. First isolation part; 602. Second isolation part; 603. Third isolation part; 61. Isolation structure; 62. Touch electrode; 7. Isolation opening; 71. First edge; 72. Second edge; 73. Third edge; 74. Fourth edge; 8. Light-emitting unit; 9. Conductive trace; 10. Connection trace; 11. Insulating layer; 111. First via; 12. First encapsulation layer; 121. Encapsulation unit; 13. Second encapsulation layer; 14. Third encapsulation layer; 15. Pixel defining material layer; 16. Isolation material layer. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0068] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and 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. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0070] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0071] Increasing the density of light-emitting units (i.e., pixel density) in a display panel is a crucial way to improve display quality. However, current display panels manufactured using Fine Metal Mask (FMM) technology are limited by technological constraints that prevent further increases in light-emitting unit density. Through long-term research, the inventors discovered a solution to this problem: a first isolation structure is incorporated into some display panels. During the full-layer vapor deposition of the light-emitting functional layer and the second electrode, the light-emitting functional layer and the second electrode can be disconnected at the first isolation structure. By performing multiple vapor deposition and etching processes (i.e., patterning of light-emitting units), light-emitting units of different colors can be formed in different isolation openings.

[0072] The display panel in the related technology includes a substrate and an isolation layer located on one side of the substrate. The isolation layer includes an isolation structure and a touch electrode disposed on the same layer. Thus, the touch electrode is formed at the same time as the isolation structure. However, since there are certain requirements on the overlap distance between the isolation structure and the second electrode of the light-emitting unit of the display panel, the width of the touch electrode is greatly limited, thereby affecting the touch performance of the display panel.

[0073] To address the aforementioned technical problems, the inventors have innovatively designed the following technical solutions, which will be described in detail below with reference to the accompanying drawings. It should be noted that the deficiencies in the existing solutions are the result of the inventors' practical experience and careful research. Therefore, the discovery process of the aforementioned technical problems and the solutions proposed in this embodiment below are contributions made by the inventors to this application during the invention process, and should not be construed as technical content known to those skilled in the art.

[0074] Please see Figures 1-2 This embodiment provides a display panel, which includes a substrate 1, a pixel defining layer 2, and an isolation layer 6.

[0075] The pixel defining layer 2 is located on one side of the substrate 1, and the pixel defining layer 2 has a pixel opening 21.

[0076] The isolation layer 6 is located on the side of the pixel defining layer 2 away from the substrate 1. The isolation layer 6 includes an isolation structure 61 and a touch electrode 62 disposed on the same layer. The isolation structure 61 is insulated from the adjacent touch electrode 62. The isolation structure 61 encloses and forms a plurality of isolation openings 7, which are connected to the pixel opening 21.

[0077] The touch electrode 62 extends along the first direction X. Along the first direction X, the minimum distance between the edges of the orthographic projections of the side of two adjacent pixel openings 21 away from the substrate 1 on the substrate 1 is the first dimension D1. Along the second direction Y, the minimum distance between the orthographic projection of the side of the isolation structure 61 close to the touch electrode 62 on the substrate 1 and the edge of the orthographic projection of the side of the pixel opening 21 away from the substrate 1 on the substrate 1 is the second dimension D2. The second dimension D2 is less than half of the first dimension D1. The second direction Y intersects the first direction X.

[0078] In related technologies, the minimum distance between the edges of the orthographic projections of two adjacent pixel openings 21 arranged along the first direction X on the substrate 1 away from the substrate 1 is half the minimum distance between the edges of the orthographic projections of the isolation structure 61 arranged along the second direction Y on the substrate 1 near the touch electrode 62 and the edges of the orthographic projections of the pixel openings 21 on the substrate 1 away from the substrate 1. That is, in related technologies, the second dimension D2 is equal to half of the first dimension D1.

[0079] In this embodiment, while keeping the minimum distance between the edges of the orthographic projections of the adjacent pixel openings 21 arranged along the first direction X on the substrate 1 away from the substrate 1 unchanged, the second size D2 is set to be less than half of the first size D1. The minimum distance between the orthographic projections of the isolation structure 61 arranged along the second direction Y on the substrate 1 near the touch electrode 62 and the edges of the orthographic projections of the pixel openings 21 away from the substrate 1 on the substrate 1 is reduced, i.e., the second size D2 is reduced. This allows more space to be reserved for setting the touch electrode 62, thereby making the touch electrode 62 wider, which in turn increases the touch area of ​​the display panel and ultimately improves the touch performance of the display panel.

[0080] Based on the above design, this embodiment can increase the width of the touch electrode 62 by setting the second size to be less than half of the first size, thereby increasing the touch area of ​​the display panel and thus improving the touch performance of the display panel.

[0081] In some possible implementations, please refer again. Figure 1 Along the second direction Y, the size W of the orthogonal projection of the touch electrode 62 onto the substrate 1 is greater than or equal to 10 μm and less than or equal to 12 μm. For example, the size W can be 10 μm, 10.5 μm, 11 μm, 11.5 μm, or 12 μm, etc. By reasonably setting the size W, that is, reasonably setting the width of the touch electrode 62, the width of the touch electrode 62 can be increased without affecting the arrangement of the light-emitting unit 8, thereby improving the touch performance of the display panel.

[0082] Preferably, the touch electrode 62 is configured as a self-capacitance detection electrode. In this embodiment, the touch electrode 62 can be a self-capacitance electrode, and all touch electrodes 62 are arranged in the same layer, thereby greatly reducing the thickness of the display panel.

[0083] Preferably, the second direction Y is perpendicular to the first direction X. For example, the first direction X can be the row direction of the display panel, and the second direction Y can be the column direction of the display panel.

[0084] For some possible implementations, please refer to Figures 1-3 The display panel also includes a light-emitting unit 8 located in the isolation opening 7. The light-emitting unit 8 includes a first electrode 3, a light-emitting part 4 and a second electrode 5 stacked sequentially in a direction away from the substrate 1. Part of the second electrode 5 overlaps with the isolation structure 61.

[0085] The isolation structure 61 allows the display panel to form film layers of different colors of light-emitting units 8 in different isolation openings 7 without the need for a fine mask. When forming the light-emitting material layer, the isolation structure 61 separates the light-emitting material layer into multiple spaced-apart light-emitting portions 4. When forming the second electrode material layer, the isolation structure 61 separates the second electrode material layer into multiple spaced-apart second electrodes 5. The isolation structure 61 includes a conductive material, and the second electrodes 5 are electrically connected to the isolation structure 61. One first electrode 3, one light-emitting portion 4, and one second electrode 5 form one light-emitting unit 8. The first electrode 3 can be an anode, and the second electrode 5 can be a cathode.

[0086] In this way, different light-emitting units 8 can be made independent of each other, thereby reducing crosstalk between adjacent light-emitting units 8 and improving the display effect of the display panel. At the same time, due to the presence of the isolation structure 61, the light-emitting material layer and the second electrode material layer in each color light-emitting unit 8 of the display panel can be prepared as a whole before patterning, thereby eliminating the need for a fine mask and saving the manufacturing cost of the display panel.

[0087] Preferably, please see again. Figures 1-3 The orthographic projection of the isolation structure 61 on the side facing the substrate 1 includes a first edge 71 and a second edge 72 disposed opposite to each other, and a third edge 73 and a fourth edge 74 disposed opposite to each other. The orthographic projection of the second electrode 5 on the substrate 1 is located outside the first edge 71 and the second edge 72, and the third edge 73 and the fourth edge 74 are located within the orthographic projection of the second electrode 5 on the substrate 1.

[0088] Due to the influence of vapor deposition equipment, for example, the vapor deposition angle of the second electrode 5 can be controlled along the direction of movement of the vapor deposition source. Therefore, the side of the isolation structure 61 corresponding to the direction of movement of the vapor deposition source can easily overlap with the second electrode 5. However, it is not easy to control the vapor deposition angle of the second electrode 5 in the direction perpendicular to the direction of movement of the vapor deposition source. Therefore, the side of the isolation structure 61 corresponding to the direction perpendicular to the direction of movement of the vapor deposition source cannot easily overlap with the second electrode 5.

[0089] Since the second electrode 5 does not overlap with the first edge 71 and the second edge 72 of the oppositely arranged isolation structure 61 facing the substrate 1, and the second electrode 5 only overlaps with the third edge 73 and the fourth edge 74, the thickness of the second electrode 5 can be reduced, thereby improving the optical performance of the display panel.

[0090] Since the second electrode 5 does not overlap with the first edge 71 and the second edge 72 opposite to the touch electrode 62, the width of the isolation structure 61 corresponding to the first edge 71 and the second edge 72 can be appropriately reduced, that is, the first dimension can be appropriately reduced. Since the first dimension can be reduced, more space can be reserved for the setting of the touch electrode 62, thereby increasing the width of the touch electrode 62.

[0091] In some possible implementations, the first edge 71 and the second edge 72 extend along a first direction X, and the third edge 73 and the fourth edge 74 extend along a second direction Y. The dimensions of the first edge 71 and the second edge 72 extending along the first direction X are smaller than the dimensions of the third edge 73 and the fourth edge 74 extending along the second direction Y.

[0092] Optionally, the first edge 71, the third edge 73, the second edge 72 and the fourth edge 74 are connected in sequence.

[0093] The first edge 71 and the second edge 72, which have shorter extension dimensions, are opposite to the touch electrode 62. The touch electrode 62 is not provided between the third edge 73 and the fourth edge 74, which have longer extension dimensions. This makes it easier to increase the area of ​​the isolation opening 7, thereby increasing the aperture ratio of the display panel and thus improving the display effect of the display panel.

[0094] For some possible implementations, please refer to Figure 1 The second dimension D2 is greater than or equal to 3μm and less than or equal to 5μm. For example, the second dimension D2 can be 3μm, 3.5μm, 4μm, 4.5μm or 5μm, etc. By reasonably setting the second dimension D2, that is, reasonably reducing the second dimension D2, the width of the touch electrode 62 can be increased.

[0095] Preferably, the first size D1 is greater than or equal to 8μm and less than or equal to 12μm. For example, the first size D1 can be 8μm, 9μm, 10μm, 11μm or 12μm, etc. Setting the first size D1 reasonably can make the size of the isolation structure 61 between adjacent light-emitting units 8 more reasonable.

[0096] Preferably, the distance W1 between the orthogonal projections of the adjacent isolation structure 61 and the touch electrode 62 on the substrate 1 is greater than or equal to 3 μm and less than or equal to 4 μm. For example, the distance W1 can be 3 μm, 3.2 μm, 3.5 μm, 3.7 μm, 3.9 μm, or 4 μm, etc. By reasonably setting the distance W1, while reserving sufficient space between the isolation structure 61 and the touch electrode 62 to prevent short circuits between them, the width of the touch electrode 62 can be set to be wider.

[0097] For some possible implementations, please refer to Figure 4 The number of isolation structures 61 is multiple. The isolation structures 61 extend along the first direction X and the multiple isolation structures 61 are arranged along the second direction Y. The display panel also includes a connection trace 10 extending along the second direction Y, and the connection trace 10 is electrically connected to the multiple isolation structures 61 arranged along the second direction Y.

[0098] The isolation layer 6 is divided into multiple isolation structures 61 and multiple touch electrodes 62 spaced apart along the second direction Y. Both the isolation structures 61 and the touch electrodes 62 extend along the first direction X. The multiple isolation structures 61 are electrically connected by a connecting trace 10 extending along the second direction Y, and the connecting trace 10 is then electrically connected to a power supply trace. Thus, the power signal from the power supply trace can be sequentially transmitted through the connecting trace 10 to the multiple isolation structures 61 and the corresponding second electrodes 5 to illuminate the corresponding light-emitting units 8.

[0099] Preferably, please see again. Figure 4 The number of touch electrodes 62 is multiple, and the multiple touch electrodes 62 are arranged along the second direction Y. The display panel also includes a conductive layer located between the isolation layer 6 and the substrate 1. The conductive layer includes multiple conductive traces 9 extending along the second direction Y, and the multiple conductive traces 9 are electrically connected to the touch electrodes 62.

[0100] Multiple touch electrodes 62 are arranged along the second direction Y and extend along the first direction X. Multiple conductive lines 9 are arranged along the first direction X and extend along the second direction Y, and the multiple conductive lines 9 electrically connect the multiple touch electrodes 62. In this way, touch signals can be transmitted to multiple touch electrodes 62 in a unified manner. At the same time, both the touch electrodes 62 and the conductive lines 9 can serve as effective sensing electrodes of the display panel, thereby further increasing the touch area of ​​the display panel and further improving the touch performance of the display panel.

[0101] In some possible implementations, the pattern formed by the orthographic projections of the plurality of touch electrodes 62 onto the substrate 1 and the orthographic projections of the plurality of conductive traces 9 onto the substrate 1 includes a plurality of grids.

[0102] Optionally, the display panel also includes light-emitting units 8 located within the isolation opening 7. The light-emitting units 8 include a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit with different light-emitting colors. The orthographic projections of an adjacent first light-emitting unit, a second light-emitting unit, and a third light-emitting unit on the substrate 1 are located within a grid.

[0103] Thus, the grid formed by the touch electrode 62 and conductive trace 9 on the substrate 1 surrounds a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit, which can increase the grid density formed by the touch electrode 62 and conductive trace 9 on the substrate 1, thereby further improving the touch performance of the display panel.

[0104] In some possible implementations, please refer again. Figure 4 An isolation opening 7 is formed on the side of the isolation structure 61 away from the substrate 1. Along the first direction X, the minimum distance between the edges of the orthographic projections of two adjacent isolation openings 7 on the substrate 1 is the third dimension D3. Along the second direction Y, the minimum distance between the orthographic projection of the side of the isolation structure 61 near the touch electrode 62 on the substrate 1 and the edge of the orthographic projection of the isolation opening 7 on the substrate 1 is the fourth dimension D4. The fourth dimension D4 is less than half of the third dimension D3.

[0105] In related technologies, the minimum distance between the orthographic projection of the side of the isolation structure 61 arranged along the second direction Y near the touch electrode 62 on the substrate 1 and the edge of the orthographic projection of the isolation opening 7 on the substrate 1 is half the minimum distance between the edges of the orthographic projections of two adjacent isolation openings 7 arranged along the first direction X on the substrate 1. That is, in related technologies, the fourth dimension D4 is equal to half of the third dimension D3.

[0106] In this embodiment, while keeping the distance between adjacent isolation openings 7 arranged along the first direction X unchanged, the fourth dimension D4 is set to be less than half of the third dimension D3, that is, the fourth dimension D4 is reduced. This allows more space to be reserved for setting the touch electrode 62, so that the touch electrode 62 can be set wider, thereby increasing the touch area of ​​the display panel and ultimately improving the touch performance of the display panel.

[0107] For some possible implementations, please refer to Figure 5 The conductive layer includes multiple sub-conductive layers stacked sequentially along the direction away from the substrate 1, and the conductive trace 9 is located in the sub-conductive layer closest to the isolation structure 61.

[0108] Specifically, the conductive layer includes a first sub-conductive layer, a second sub-conductive layer, a third sub-conductive layer and a fourth sub-conductive layer stacked sequentially along a direction away from the substrate 1, and the conductive trace 9 is located in the fourth sub-conductive layer.

[0109] The display panel also includes a buffer layer and a semiconductor layer located between the substrate 1 and the first sub-conductive layer. The semiconductor layer includes a source region, a drain region, and a channel region. The first sub-conductive layer includes a gate and a first capacitor plate. The second sub-conductive layer includes a second capacitor plate, which together form a capacitor. The third sub-conductive layer includes a drain and a source, with the drain electrically connected to the drain region and the source electrically connected to the source region. The gate, source, and drain form a driving transistor. In this embodiment, the conductive trace 9 is located in the fourth sub-conductive layer. Thus, the conductive trace 9 can be formed simultaneously with the formation of the fourth sub-conductive layer.

[0110] In some possible implementations, please refer again. Figure 5 The display panel also includes an insulating layer 11 located between the fourth sub-conductive layer and the isolation layer. Along the direction perpendicular to the substrate 1, the insulating layer 11 has a first through-hole 111 penetrating the insulating layer 11.

[0111] Optionally, the display panel also includes a pixel defining layer 2 located between the insulating layer 11 and the isolation layer. The pixel defining layer 2 is provided with a pixel opening 21 and a second via 22. The pixel opening 21 is connected to the isolation opening 7, and the second via 22 is connected to the first via 111. The touch electrode 62 is electrically connected to the conductive trace 9 through the second via 22 and the first via 111 in sequence.

[0112] When the centers of the orthographic projections of the first via 111 and the second via 22 on the substrate 1 coincide to form the touch electrode 62, the material of the touch electrode 62 will extend sequentially into the second via 22 and the first via 111 and contact the side of the conductive trace 9 away from the substrate 1. In this way, it is easier to electrically connect the touch electrode 62 to the conductive trace 9.

[0113] For some possible implementations, please refer to Figure 6 and Figure 7 The display panel also includes a light-emitting unit 8 located within the isolation opening 7 and a first encapsulation layer 12 located on the side of the light-emitting unit 8 away from the substrate 1. The first encapsulation layer 12 includes a plurality of encapsulation units 121 spaced apart. At least a portion of the encapsulation units 121 extends from the side of the isolation structure 61 toward the isolation opening 7 to the side of the isolation structure 61 away from the substrate 1.

[0114] Preferably, adjacent packaging units 121 are spaced apart on the side of the isolation structure 61 away from the substrate 1.

[0115] During the patterning process of the light-emitting unit 8, the first encapsulation material layer is broken at the isolation structure 61 to form an encapsulation unit 121. The encapsulation unit 121 can completely and independently encapsulate the corresponding light-emitting unit 8, thereby improving the display characteristics of the display panel.

[0116] For some possible implementations, please refer to Figure 8 and Figure 9 The display panel also includes a second encapsulation layer 13 located on the side of the first encapsulation layer 12 away from the substrate 1 and a third encapsulation layer 14 located on the side of the second encapsulation layer 13 away from the substrate 1.

[0117] Preferably, the materials of the first encapsulation layer 12 and the third encapsulation layer 14 both include inorganic materials, and the material of the second encapsulation layer 13 includes organic materials.

[0118] For example, the first encapsulation layer 12 and the third encapsulation layer 14 can be formed by chemical vapor deposition (CVD), and the second encapsulation layer 13 can be formed by inkjet printing (IJP). The second encapsulation layer 13 and the third encapsulation layer 14 can achieve a better encapsulation effect on the light-emitting unit 8, thereby further improving the encapsulation quality of the display panel.

[0119] In some possible implementations, please refer again. Figure 7 Both the isolation structure 61 and the touch electrode 62 include a first isolation portion 601 and a second isolation portion 602 stacked sequentially along the direction away from the substrate 1. The orthographic projection of the first isolation portion 601 on the substrate 1 is located within the orthographic projection of the second isolation portion 602 on the substrate 1.

[0120] Since the second isolation portion 602 is located on the side of the first isolation portion 601 away from the substrate 1, and on a plane parallel to the substrate 1, the lateral width of the second isolation portion 602 is greater than the lateral width of the first isolation portion 601. Therefore, the second isolation portion 602 causes the light-emitting material layer and the second electrode material layer to be disconnected at the isolation structure 61. In this way, the isolation structure 61 formed by the first isolation portion 601 and the second isolation portion 602 makes it easier to independently package each light-emitting unit 8, thereby improving the packaging yield of the display panel.

[0121] Preferably, please see again. Figure 1 and Figure 7 The display panel also includes a light-emitting unit 8 located within the isolation opening 7. Along the first direction X, the second electrode 5 of the light-emitting unit overlaps with the first isolation portion 601. Along the second direction Y, the orthogonal projection of the second electrode 5 of the light-emitting unit on the substrate 1 is located outside the orthogonal projection of the first isolation portion 601 on the substrate 1.

[0122] The first isolation section 601 includes a conductive material, and the second electrode 5 corresponding to the light-emitting unit 8 extends to contact the side wall of the first isolation section 601 so as to realize the electrical connection between the second electrode 5 corresponding to the light-emitting unit 8 and the first isolation section 601.

[0123] Please see again Figure 1 , Figure 8 and Figure 9 The isolation structure 61 also includes a third isolation portion 603 located on the side of the first isolation portion 601 facing the substrate 1. Along the first direction X, the second electrode 5 overlaps with the third isolation portion 603. Along the second direction Y, the orthogonal projection of the second electrode 5 of the light-emitting unit on the substrate 1 is outside the orthogonal projection of the third isolation portion 603 on the substrate 1.

[0124] The third isolation section 603 includes a conductive material, and the second electrode 5 corresponding to the light-emitting unit 8 extends to contact the side wall of the third isolation section 603 so as to realize the electrical connection between the second electrode 5 corresponding to the light-emitting unit 8 and the third isolation section 603.

[0125] Specifically, the material of the third isolation portion 603 includes molybdenum; and / or, the material of the first isolation portion 601 includes aluminum; and / or, the material of the second isolation portion 602 includes titanium. Thus, when the isolation structure 61 isolates the second electrode material layer as the second electrode 5, the second electrode 5 is more easily electrically connected to the first isolation portion 601 and / or the third isolation portion 603.

[0126] The orthographic projection of the light-emitting part 4 onto the substrate 1 is outside the orthographic projection of the third isolation part 603 and / or the first isolation part 601 onto the substrate 1. In this way, the light-emitting part 4 does not overlap with the isolation structure 61, thereby effectively improving the crosstalk problem between the light-emitting units 8.

[0127] In some possible implementations, this application also provides another display panel, which includes a substrate 1 and an isolation layer 6.

[0128] The isolation layer 6 is located on one side of the substrate 1. The isolation layer 6 includes an isolation structure 61 and a touch electrode 62 disposed on the same layer. The isolation structure 61 is insulated from the adjacent touch electrode 62. The side of the isolation structure 61 away from the substrate 1 encloses a plurality of isolation openings 7.

[0129] The touch electrode 62 extends along the first direction X. Along the first direction X, the minimum distance between the edges of the orthographic projections of two adjacent isolation openings 7 on the substrate 1 is the third dimension D3. Along the second direction Y, the minimum distance between the orthographic projection of the side of the isolation structure 61 near the touch electrode 62 on the substrate 1 and the edge of the orthographic projection of the isolation opening 7 on the substrate 1 is the fourth dimension D4. The fourth dimension D4 is less than half of the third dimension D3.

[0130] In related technologies, the minimum distance between the orthographic projection of the side of the isolation structure 61 arranged along the second direction Y near the touch electrode 62 on the substrate 1 and the edge of the orthographic projection of the isolation opening 7 on the substrate 1 is half the minimum distance between the edges of the orthographic projections of two adjacent isolation openings 7 arranged along the first direction X on the substrate 1. That is, in related technologies, the fourth dimension D4 is equal to half of the third dimension D3.

[0131] In this embodiment, while keeping the distance between adjacent isolation openings 7 arranged along the first direction X unchanged, the fourth dimension D4 is set to be less than half of the third dimension D3, that is, the fourth dimension D4 is reduced. This allows more space to be reserved for setting the touch electrode 62, so that the touch electrode 62 can be set wider, thereby increasing the touch area of ​​the display panel and ultimately improving the touch performance of the display panel.

[0132] For some possible implementations, please refer to Figure 1 , Figure 2 and Figure 10 This application also provides a method for manufacturing a display panel, the display panel comprising:

[0133] S10: Provide substrate 1.

[0134] S11: A pixel defining layer 2 is formed on one side of the substrate 1, and a pixel opening 21 is provided on the pixel defining layer 2.

[0135] S11: An isolation layer 6 is formed on the side of the pixel defining layer 2 away from the substrate 1. The isolation layer 6 includes an isolation structure 61 and a touch electrode 62 disposed on the same layer. The isolation structure 61 is insulated from the adjacent touch electrode 62. The isolation structure 61 encloses and forms a plurality of isolation openings 7, which are connected to the pixel openings 21. The touch electrode 62 extends along the first direction X. Along the first direction X, the minimum distance between the edges of the orthographic projections of the sides of two adjacent pixel openings 21 away from the substrate 1 on the substrate 1 is a first dimension D1. Along the second direction Y, the minimum distance between the edges of the orthographic projections of the side of the isolation structure 61 near the touch electrode 62 on the substrate 1 and the edges of the orthographic projections of the side of the pixel opening 21 away from the substrate 1 on the substrate 1 is a second dimension D2. The second dimension D2 is less than half of the first dimension D1. The second direction Y intersects the first direction X.

[0136] Please see Figure 11 A first electrode layer is formed on one side of the substrate 1, and the first electrode layer includes a plurality of first electrodes 3 spaced apart.

[0137] Please see Figure 12 A pixel defining material layer 15 and an isolation material layer 16 are sequentially formed on the side of the first electrode layer away from the substrate 1.

[0138] Please see Figure 13 The isolation material layer 16 and the pixel defining material layer 15 are patterned sequentially to form an isolation structure 61 and a pixel defining layer 2, respectively. The pixel defining layer 2 has a pixel opening 21 that exposes a portion of the first electrode 3, and the pixel opening 21 is connected to the isolation opening 7.

[0139] In the display panel formed by the above method, the second dimension D2 is less than half of the first dimension D1, that is, the second dimension is reduced. This allows more space to be reserved for setting the touch electrode 62, so that the touch electrode 62 can be set wider, thereby increasing the touch area of ​​the display panel and ultimately improving the touch performance of the display panel.

[0140] In some possible embodiments, this application also provides an electronic device that includes the display panel described in this application, or includes a display panel prepared by the method described in this application. This electronic device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Because this electronic device includes the display panel described in this application, it has better display quality.

[0141] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0142] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a pixel defining layer located on one side of the substrate, the pixel defining layer being provided with a pixel opening; an isolation layer located on a side of the pixel defining layer away from the substrate, the isolation layer comprising an isolation structure and a touch electrode provided in the same layer, the isolation structure being insulatively arranged between the adjacent touch electrode, the isolation structure enclosing a plurality of isolation openings, the isolation openings being in communication with the pixel opening; wherein the touch electrode extends along a first direction, and along the first direction, the minimum distance between the edges of the projections on the substrate of the side of the adjacent two pixel openings away from the substrate is a first size; along a second direction, the minimum distance between the projection on the substrate of the side of the isolation structure close to the touch electrode and the edge of the projection on the substrate of the side of the pixel opening away from the touch electrode is a second size, the second size being less than one half of the first size, and the second direction intersecting the first direction.

2. The display panel of claim 1, wherein, Along the second direction, the size of the projection on the substrate of the touch electrode is greater than or equal to 10 μm and less than or equal to 12 μm.

3. The display panel of claim 1, wherein, The touch electrode is configured as a self-capacitance detection electrode. The second direction is perpendicular to the first direction.

4. The display panel of claim 1, wherein, The display panel further comprises a light emitting unit located in the isolation opening, the light emitting unit comprising a first electrode, a light emitting part and a second electrode sequentially stacked in the direction away from the substrate, and part of the second electrode overlaps with the isolation structure.

5. The display panel of claim 4, wherein, The projection on the substrate of the side of the isolation structure towards the substrate comprises a first edge and a second edge arranged oppositely, and a third edge and a fourth edge arranged oppositely, the projection on the substrate of the second electrode is located outside the first edge and the second edge, and the projection on the substrate of the second electrode is located within the projection on the substrate of the third edge and the fourth edge.

6. The display panel of claim 1, wherein, The number of the isolation structures is a plurality, the isolation structures extend along the first direction, and a plurality of the isolation structures are arranged along the second direction, the display panel further comprises a connection wire extending along the second direction, and the connection wire is electrically connected to a plurality of the isolation structures arranged along the second direction.

7. The display panel of claim 5, wherein, The first edge and the second edge extend along the first direction; The third edge and the fourth edge extend along the second direction.

8. The display panel of claim 7, wherein, The size of the first edge and the second edge extending along the first direction is less than the size of the third edge and the fourth edge extending along the second direction; The first edge, the third edge, the second edge and the fourth edge are sequentially connected.

9. The display panel of claim 1, wherein, The second size is greater than or equal to 3 μm and less than or equal to 5 μm; The first size is greater than or equal to 8 μm and less than or equal to 12 μm.

10. The display panel of claim 1, wherein, The distance between the projections on the substrate of the adjacent isolation structures and the touch electrode is greater than or equal to 3 μm and less than or equal to 4 μm.

11. The display panel of claim 1, wherein, The display panel further comprises a conductive layer between the isolation layer and the substrate, the conductive layer comprises a plurality of conductive traces extending along the second direction, and the plurality of conductive traces are electrically connected with the touch electrodes.

12. The display panel of claim 11, wherein, The number of the touch electrodes is a plurality, the plurality of touch electrodes are arranged along the second direction, and the orthographic projection of the plurality of touch electrodes on the substrate and the pattern formed by the orthographic projection of the plurality of conductive traces on the substrate comprise a plurality of grids.

13. The display panel of claim 12, wherein, The display panel further comprises a light emitting unit in the isolation opening, the light emitting unit comprises first light emitting units, second light emitting units and third light emitting units with different light emitting colors, and the orthographic projection of adjacent one of the first light emitting unit, the second light emitting unit and the third light emitting unit on the substrate is located in one grid.

14. The display panel of claim 11, wherein, The conductive layer comprises a plurality of sub-conductive layers stacked in sequence away from the substrate, and the conductive traces are located in the sub-conductive layer closest to the isolation structure.

15. The display panel of claim 14, wherein, The conductive layer comprises a first sub-conductive layer, a second sub-conductive layer, a third sub-conductive layer and a fourth sub-conductive layer stacked in sequence away from the substrate, and the conductive traces are located in the fourth sub-conductive layer. The display panel further comprises an insulating layer between the fourth sub-conductive layer and the isolation layer, and a first via penetrating through the insulating layer is arranged on the insulating layer in a direction perpendicular to the substrate. The pixel defining layer is located between the insulating layer and the isolation layer, a second via is arranged on the pixel defining layer, the second via is in communication with the first via, and the touch electrodes are electrically connected with the conductive traces through the second via and the first via in sequence.

16. The display panel according to any one of claims 1-15, characterized in that, The isolation structure forms the isolation opening away from the substrate, and the minimum distance between the edges of the orthographic projection of adjacent two isolation openings on the substrate in the first direction is a third size. In the second direction, the minimum distance between the edges of the orthographic projection of the side of the isolation structure close to the touch electrodes on the substrate and the orthographic projection of the isolation opening on the substrate is a fourth size, and the fourth size is less than one half of the third size.

17. The display panel of claim 1, wherein, The display panel further comprises a light emitting unit in the isolation opening and a first encapsulation layer away from the substrate on the side of the light emitting unit, the first encapsulation layer comprises a plurality of encapsulation units arranged at intervals, and at least part of the encapsulation units extends from the side of the isolation structure facing the isolation opening to the side of the isolation structure away from the substrate. Adjacent encapsulation units are arranged at intervals on the side of the isolation structure away from the substrate. The display panel further comprises a second encapsulation layer away from the substrate on the side of the first encapsulation layer. The display panel further comprises a third encapsulation layer away from the substrate on the side of the second encapsulation layer. The materials of the first encapsulation layer and the third encapsulation layer both comprise inorganic materials. The material of the second encapsulation layer comprises an organic material.

18. The display panel according to any one of claims 1-15, wherein, The isolation structure and the touch electrode each include a first isolation portion and a second isolation portion which are sequentially stacked in a direction away from the substrate, and a projection of the first isolation portion on the substrate is located within a projection of the second isolation portion on the substrate. The second isolation portion encloses the isolation opening.

19. The display panel of claim 18, wherein, The display panel further includes a light emitting unit located in the isolation opening, along the first direction, a second electrode of the light emitting unit overlaps the first isolation portion, and along the second direction, a projection of the second electrode of the light emitting unit on the substrate is located outside a projection of the first isolation portion on the substrate. And / or, the isolation structure further includes a third isolation portion located on a side of the first isolation portion facing the substrate, along the first direction, the second electrode overlaps the third isolation portion, and along the second direction, a projection of the second electrode of the light emitting unit on the substrate is located outside a projection of the third isolation portion on the substrate. The third isolation portion is made of molybdenum; and / or the first isolation portion is made of aluminum; and / or the second isolation portion is made of titanium.

20. A display panel comprising: The display panel includes: a substrate; an isolation layer located on a side of the substrate, the isolation layer including isolation structures and touch electrodes which are provided in the same layer, the isolation structures being insulatively arranged between adjacent touch electrodes, and a side of the isolation structures away from the substrate enclosing a plurality of isolation openings; wherein the touch electrodes extend along a first direction, along the first direction, a minimum distance between edges of projections of two adjacent isolation openings on the substrate is a third size; along a second direction, a minimum distance between edges of a projection of a side of the isolation structure close to the touch electrodes on the substrate and a projection of the isolation opening on the substrate is a fourth size, the fourth size being less than one half of the third size.

21. A method of manufacturing a display panel, the method comprising: The display panel includes: providing a substrate; forming a pixel defining layer on a side of the substrate, the pixel defining layer being provided with pixel openings; forming an isolation layer on a side of the pixel defining layer away from the substrate, the isolation layer including isolation structures and touch electrodes which are provided in the same layer, the isolation structures being insulatively arranged between adjacent touch electrodes, the isolation structures enclosing a plurality of isolation openings, the isolation openings being in communication with the pixel openings; the touch electrodes extending along a first direction, along the first direction, a minimum distance between edges of projections of two adjacent pixel openings on the substrate away from the substrate is a first size; along a second direction, a minimum distance between edges of a projection of a side of the isolation structure close to the touch electrodes on the substrate and a projection of a side of the pixel opening on the substrate away from the substrate is a second size, the second size being less than one half of the first size, the second direction intersecting the first direction.

22. An electronic device, comprising: The electronic device includes the display panel of any one of claims 1-20, or a display panel prepared by the preparation method of the display panel of claim 21.

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