Display panel, preparation method thereof and display device

Abstract

The embodiment of the invention provides a display panel, a preparation method thereof and a display device. The display panel includes: a substrate; the auxiliary electrode is positioned on one side of the substrate; the auxiliary electrode comprises an auxiliary cathode and a lap joint structure which are arranged on the same layer, and the auxiliary cathode and the lap joint structure are arranged in an insulated mode; the touch electrode layer is located on the side, away from the substrate, of the auxiliary electrode; the touch electrode layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes are arranged on the same layer, each first touch electrode comprises a plurality of electrode sub-segments distributed at intervals in the first direction, each second touch electrode extends in the second direction, and the first direction intersects with the second direction; the two adjacent electrode sub-segments in one first touch electrode are located on the two opposite sides of one second touch electrode in the first direction respectively, and the two adjacent electrode sub-segments in one first touch electrode are connected through a lap joint structure.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) 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 range of applications, becoming the mainstream of display devices.

[0003] However, the touch structure in current OLED display products needs to be optimized. Summary of the Invention

[0004] In view of this, embodiments of this application provide a new display panel to at least partially solve the above-mentioned problems.

[0005] According to a first aspect of the present application, a display panel is provided, comprising: a substrate; an auxiliary electrode located on one side of the substrate; the auxiliary electrode including an auxiliary cathode and an overlapping structure disposed on the same layer, the auxiliary cathode and the overlapping structure being insulated from each other; a touch electrode layer located on the side of the auxiliary electrode facing away from the substrate; the touch electrode layer including a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes being disposed on the same layer, each first touch electrode including a plurality of electrode sub-segments spaced apart along a first direction, each second touch electrode extending along a second direction, the first direction intersecting the second direction; two adjacent electrode sub-segments of a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction, and two adjacent electrode sub-segments of a first touch electrode are connected by an overlapping structure.

[0006] In some alternative embodiments, the display panel further includes a first encapsulation layer, at least a portion of which is located between the auxiliary electrode and the touch electrode layer; preferably, the first encapsulation layer has a connection via, and a transition connection structure is provided in the connection via, wherein the connected electrode sub-segment and the overlapping structure are connected through the transition connection structure in the connection via; preferably, the first encapsulation layer comprises an inorganic material.

[0007] In some alternative embodiments, the display panel further includes a second encapsulation layer that covers the touch electrode layer.

[0008] In some alternative embodiments, the second encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer; the first inorganic encapsulation layer is located on the side of the first encapsulation layer opposite to the substrate, the organic encapsulation layer is located on the side of the first inorganic encapsulation layer opposite to the substrate, and the second inorganic encapsulation layer is located on the side of the organic encapsulation layer opposite to the substrate.

[0009] In some alternative embodiments, the first touch electrode is a sensing electrode and the second touch electrode is a driving electrode; or, the first touch electrode is a driving electrode and the second touch electrode is a sensing electrode.

[0010] In some alternative embodiments, the auxiliary cathode includes an isolation structure defining a plurality of isolation openings in which at least a portion of a light-emitting device is disposed, the light-emitting device including a first electrode, a light-emitting functional layer, and a second electrode arranged sequentially in a direction away from the substrate; preferably, an isolation space surrounding the overlapping structure exists between the isolation structure and the overlapping structure.

[0011] In some alternative embodiments, the isolation structure includes a first isolation portion and a second isolation portion stacked on the substrate, the first isolation portion being located between the substrate and the second isolation portion, and the orthographic projection of the first isolation portion on the substrate being located within the orthographic projection of the second isolation portion on the substrate.

[0012] In some alternative embodiments, the overlapping structure includes a first part and a second part, wherein the first part is disposed on the same layer as the first isolation portion, and the second part is disposed on the same layer as the second isolation portion; and the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate.

[0013] In some alternative embodiments, the isolation structure includes a third isolation portion located on the side of the first isolation portion near the substrate, wherein the orthographic projection of the first isolation portion on the substrate is within the orthographic projection of the third isolation portion on the substrate; preferably, the overlapping structure further includes a third portion disposed on the same layer as the third isolation portion, wherein the orthographic projection of the first portion on the substrate is within the orthographic projection of the third portion on the substrate.

[0014] In some alternative embodiments, the display panel further includes a pixel defining layer, the pixel defining layer including a pixel defining portion and a pixel opening, at least a portion of the first electrode being exposed through the pixel opening, and the isolation structure and / or the overlapping structure being disposed on the side of the pixel defining portion away from the substrate.

[0015] This application embodiment also provides a display panel, including: a substrate; a driving circuit layer disposed on one side of the substrate; an auxiliary electrode located on the side of the driving circuit layer away from the substrate; the auxiliary electrode includes an auxiliary cathode and an overlapping structure disposed on the same layer, the auxiliary cathode and the overlapping structure being insulated from each other; a touch electrode layer located on the side of the auxiliary electrode away from the substrate; the touch electrode layer includes a plurality of first touch electrodes, each first touch electrode including a plurality of electrode sub-segments spaced apart along a first direction, and two adjacent electrode sub-segments of the first touch electrode being connected by one of the overlapping structures.

[0016] In some optional embodiments, the touch electrode layer further includes a plurality of second touch electrodes, wherein the first touch electrode and the second touch electrode are disposed in the same layer, the second touch electrode extends along a second direction, and the first direction intersects the second direction; two adjacent electrode segments in a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction.

[0017] In some alternative embodiments, the display panel further includes a second encapsulation layer that covers the touch electrode layer. Along a direction away from the substrate, the second encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer disposed sequentially.

[0018] This application embodiment also provides a method for manufacturing a display panel, comprising: forming an auxiliary electrode on one side of a substrate; the auxiliary electrode includes an auxiliary cathode and an overlapping structure disposed in the same layer, the auxiliary cathode and the overlapping structure being insulated from each other; forming a touch electrode layer on the side of the auxiliary electrode away from the substrate; wherein the touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes being disposed in the same layer, each first touch electrode including a plurality of electrode sub-segments spaced apart along a first direction, each second touch electrode extending along a second direction, the first direction intersecting the second direction; two adjacent electrode sub-segments of a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction, and two adjacent electrode sub-segments of a first touch electrode are connected by an overlapping structure.

[0019] This application also provides a display device, including the display panel described in any of the above embodiments.

[0020] In this embodiment, the touch electrode layer is located on the side of the auxiliary electrode away from the substrate. The auxiliary cathode can shield the electrical signals generated by the first and second touch electrodes, preventing these signals from interfering with electronic components or circuit units located on the side of the auxiliary cathode closer to the substrate. The auxiliary electrode may include an auxiliary cathode and a connecting structure disposed on the same layer. The auxiliary cathode and the connecting structure are insulated from each other, thereby preventing electrical connections between them. The touch electrode layer includes multiple first touch electrodes and multiple second touch electrodes, which are disposed on the same layer. Each first touch electrode includes multiple electrode segments spaced apart along a first direction, and each second touch electrode extends along a second direction, with the first and second directions intersecting. Two adjacent electrode segments in a first touch electrode are located on opposite sides of a second touch electrode in the first direction, and two adjacent electrode segments in a first touch electrode are connected by an overlapping structure. The overlapping structure enables electrical connection between two adjacent electrode segments in the first touch electrode, allowing electrical signals in the first touch electrode to be transmitted smoothly. This ensures that the first and second touch electrodes can work normally on the same plane. Compared to the prior art where the touch electrode layer has two electrode layers, the display panel provided in this application embodiment only needs to have one electrode layer, which can significantly reduce the space occupied by the touch electrode layer. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is an exemplary structural diagram of a display device according to an embodiment of this application;

[0023] Figure 2 This is an exemplary structural diagram of a display panel according to an embodiment of this application;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 Along some embodiments provided Figure 3 A sectional view taken along line C1-C2 in the diagram;

[0026] Figure 5 For other embodiments provided along Figure 3 A sectional view taken along line C1-C2 in the diagram;

[0027] Figure 6 For some other embodiments provided along Figure 3 A sectional view taken along line C1-C2 in the diagram;

[0028] Figure 7 Along some embodiments provided Figure 3 A sectional view taken by lines D1-D2 in the diagram;

[0029] Figure 8 For other embodiments provided along Figure 3 A sectional view taken by lines D1-D2 in the diagram;

[0030] Figure 9a For some other embodiments provided along Figure 3 A sectional view taken by lines D1-D2 in the diagram;

[0031] Figure 9b For some other embodiments provided along Figure 3 A sectional view taken along line C1-C2 in the diagram;

[0032] Figure 10 For some other embodiments provided along Figure 3 A sectional view taken by lines D1-D2 in the diagram;

[0033] Figure 11 A flowchart illustrating a method for fabricating a display panel according to an embodiment of this application;

[0034] Figures 12-13 This is a structural diagram corresponding to each step in the manufacturing method of a display panel according to some embodiments.

[0035] Figure label:

[0036] 1000, Display device; 100, Display panel; 110, Substrate; 120, Auxiliary electrode; 121, Auxiliary cathode; 1211, Isolation structure; 1212, First end; 1213, Second end; 1214, First isolation portion; 1215, Second isolation portion; 1216, Third isolation portion; 122, Overlapping structure; 1221, First part; 1222, Second part; 123, Isolation space; 124, Isolation opening; 130, Touch electrode layer; 131, First touch electrode; 13 11. Electrode segment; 132. Second touch electrode; 140. First encapsulation layer; 141. Connecting via; 142. Transition connection structure; 150. Second encapsulation layer; 151. First inorganic encapsulation layer; 152. Organic encapsulation layer; 153. Second inorganic encapsulation layer; 161. Light-emitting device; 1611. First electrode; 1612. Light-emitting functional layer; 1613. Second electrode; 170. Pixel defining layer; 171. Pixel defining portion; 172. Pixel opening; AA. Display area; SA. Non-display area. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0038] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in the embodiments of this application refers to and includes any or all possible combinations of one or more associated listed items.

[0039] It should be understood that in the description of the embodiments of this application, the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the scheme of the embodiments of 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 the embodiments of this application.

[0040] Furthermore, when an element or layer is referred to as being "on" another element or layer, "connected to," or "bonded to" another element or layer, the element or layer may be directly on the other element or layer, directly connected to, or directly bonded to the other element or layer, or there may be intermediate elements or layers. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to," or "directly bonded to" another element or layer, there are no intermediate elements or layers.

[0041] The terms First, Second, etc., are used to describe various elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, and / or part from another element, component, region, layer, and / or part.

[0042] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] The specific implementation of the embodiments of this application will be further described below with reference to the accompanying drawings.

[0044] The relevant structural parts mentioned below, such as the content of the isolation structure, are found in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072. Further descriptions are provided in CN117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0045] Figure 1 This is an exemplary structural diagram of a display device 1000 according to an embodiment of this application.

[0046] See Figure 1 This application provides a display device 1000. The display device 1000 is an electronic device with image (including still images or moving images, wherein the moving images may be video) display function. For example, the display device 1000 may be any of the following: monitor, television set, billboard, digital photo frame, laser printer with display function, telephone, mobile phone, personal digital assistant (PDA), digital camera, portable camcorder, viewfinder, navigator, large-area wall, home appliance, information query device (such as business query device for e-government, bank, hospital, power and other departments), monitor, electronic display screen, virtual reality (VR) display device, augmented reality (AR) display device, and vehicle display, but is not limited thereto.

[0047] In some embodiments, see continue to see Figure 1The display device 1000 may include a display panel 100. Exemplarily, the display panel 100 may be a self-emissive display panel 100, such as an organic light-emitting diode (OLED) display panel 100, a quantum dot light-emitting diode (QLED) display panel 100, or a mini LED (or micro LED) display panel 100. In optional embodiments of this application, the display panel 100 included in the display device 1000 may be the display panel 100 described in any of the following embodiments.

[0048] For ease of description below, an XYZ coordinate system is established. The first direction X and the second direction Y are both parallel to the plane containing the display side of the display panel 100, and they intersect. For example, the first direction X and the second direction Y are perpendicular to each other. The third direction Z is perpendicular to the plane containing the display side of the display panel 100.

[0049] See Figure 2 The display panel 100 has a display area AA and a non-display area SA, wherein the display area AA is the area on the display panel 100 used for displaying images, and the non-display area SA is the area on the display panel 100 other than the display area AA. The non-display area SA may be located on at least one side of the display area AA (e.g., one side, or multiple sides), for example, the non-display area SA may be arranged around the display area AA.

[0050] The display area AA contains multiple pixels. Multiple pixel arrays are arranged within the display area AA, and each pixel includes multiple sub-pixels. Each sub-pixel can display a single color. For example, the pixels in the display area AA may include a first sub-pixel, a second sub-pixel, and a third sub-pixel, used to display red, green, or blue, respectively. In this case, the first sub-pixel is the red sub-pixel R, the second sub-pixel is the green sub-pixel G, and the third sub-pixel is the blue sub-pixel B. The multiple sub-pixels can be arranged in the display area AA according to a specified rule. For example, the multiple sub-pixels are arranged in multiple rows and columns. Since each sub-pixel corresponds to a pixel driving circuit, the pixel driving circuits are also arranged in multiple rows and columns.

[0051] It should be noted that a subpixel is the smallest unit for displaying images within the display panel 100. Figure 3 for Figure 2 The enlarged image at point A shows that each subpixel can include... Figure 3The diagram shows a light-emitting device 161 (described in detail below) and a pixel driving circuit that controls the light emission of the light-emitting device 161. That is, one sub-pixel corresponds to one pixel driving circuit. The pixel driving circuit can be configured to write a data signal in response to a received scan signal and drive the light-emitting device 161 to emit light through this electrical signal. The brightness of the light-emitting device 161 can be positively correlated with the voltage value of the data signal line. By adjusting the brightness of different sub-pixels, color superposition can achieve the display of multiple colors.

[0052] In existing display panels 100, the touch electrode layer 130 typically consists of two parallel electrodes: a driving electrode TX (also known as an emitting electrode) and a sensing electrode RX (also known as a receiving electrode). Both the driving electrode TX and the sensing electrode RX are connected to a touch chip. During operation, the touch chip can input a pulse voltage to the driving electrode TX, generating an electric field and creating a capacitance between the driving electrode TX and the sensing electrode RX. By detecting the current or voltage signal of the sensing electrode RX, the touch chip can detect the capacitance between the segment on the sensing electrode RX that intersects with the orthographic projection of the driving electrode TX and the driving electrode TX. When a finger touches the touchscreen, it blocks the electric field lines between the driving electrode TX and the sensing electrode RX, reducing the capacitance between the segment on the sensing electrode RX at the finger's touch location and the driving electrode TX. Based on the detected location of the segment with reduced capacitance, the touch chip can determine the finger's touch position and perform corresponding control operations accordingly.

[0053] The display panel 100 provided in the embodiments of this application will now be described in detail. Figure 3 and Figure 4 As shown, the display panel 100 includes: a substrate 110, an auxiliary electrode 120, and a touch electrode layer 130.

[0054] For example, the substrate 110 can be a rigid substrate 110. The material of the rigid substrate 110 can be glass or polymethyl methacrylate (PMMA), etc. The substrate 110 can also be a flexible substrate 110. The material of the flexible substrate 110 can be polyethylene terephthalate (PET), polyethylene naphthalate (PEN), ultrathin glass, or polyimide (PI), etc.

[0055] The auxiliary electrode 120 is located on one side of the substrate 110. The auxiliary electrode 120 may include an auxiliary cathode 121 and a bonding structure 122 disposed on the same layer. Both the auxiliary cathode 121 and the bonding structure 122 may be made of conductive materials, such as Ti, Al, Mo, Cu, Ti, ITO, etc. The materials of the auxiliary cathode 121 and the bonding structure 122 may be the same or different; this embodiment does not limit this. The auxiliary cathode 121 and the bonding structure 122 may be insulated from each other, meaning there is no electrical connection between them. Optionally, an isolation space 123 may exist between the auxiliary cathode 121 and the bonding structure 122, surrounding the bonding structure 122. The isolation space 123 separates the auxiliary cathode 121 and the bonding structure 122, making them insulated from each other. The auxiliary cathode 121 is used to provide a cathode voltage and may include the isolation structure 1211 described in the following embodiment. The isolation space 123 can be an annular hole surrounding the overlapping structure 122, thereby isolating the overlapping structure 122 from the auxiliary cathode 121 and preventing current from being transmitted between the overlapping structure 122 and the auxiliary cathode 121.

[0056] The touch electrode layer 130 is located on the side of the auxiliary electrode 120 that is away from the substrate 110.

[0057] The touch electrode layer 130 includes a plurality of first touch electrodes 131 and a plurality of second touch electrodes 132. The first touch electrodes 131 and the second touch electrodes 132 are disposed in the same layer, and the first touch electrodes 131 and the second touch electrodes 132 may not intersect. Each first touch electrode 131 includes a plurality of electrode segments 1311 spaced apart along a first direction. Each second touch electrode 132 extends along a second direction. The first direction and the second direction intersect, and the first direction and the second direction may be perpendicular to the thickness direction of the substrate 110. For example, the first direction may be... Figure 3 and 4 In the X direction, the second direction can be Figure 3 and 4 In the Y direction. Two adjacent electrode segments 1311 in a first touch electrode 131 are located on opposite sides of a second touch electrode 132 in the first direction, and two adjacent electrode segments 1311 in a first touch electrode 131 can be connected by an overlapping structure 122.

[0058] like Figure 3As shown, multiple first touch electrodes 131 can be uniformly arranged along the Y direction in the touch electrode layer 130, and multiple second touch electrodes 132 can be uniformly arranged along the X direction in the touch electrode layer 130. The multiple first touch electrodes 131 can be connected to a touch chip, and the multiple second touch electrodes 132 can be connected to the touch chip, thereby enabling the touch chip to detect finger touches at different positions on the display panel 100 through the multiple first touch electrodes 131 and the multiple second touch electrodes 132. In this embodiment, each first touch electrode 131 connected to the touch chip may include multiple electrode segments 1311 connected in sequence. Two adjacent electrode segments 1311 of a first touch electrode 131 can be connected to an overlapping structure 122, so that the two adjacent electrode segments 1311 are connected through the overlapping structure 122.

[0059] In some optional embodiments, the first touch electrode 131 can be a sensing electrode, and the second touch electrode 132 can be a driving electrode. This allows the sensing electrode to bypass the driving electrode via the overlapping structure 122, enabling the sensing electrode and the driving electrode to be disposed on the same plane. In other optional embodiments, the first touch electrode 131 can be a driving electrode, and the second touch electrode 132 can be a sensing electrode, thereby allowing the driving electrode to bypass the driving electrode via the overlapping structure 122.

[0060] In this embodiment, the touch electrode layer 130 is located on the side of the auxiliary electrode 120 away from the substrate 110. The auxiliary cathode 121 can shield the electrical signals generated by the first touch electrode 131 and the second touch electrode 132, preventing these signals from interfering with electronic components or circuit units located on the side of the auxiliary cathode 121 closest to the substrate 110. The auxiliary electrode 120 may include an auxiliary cathode 121 and a connecting structure 122 disposed on the same layer. The auxiliary cathode 121 and the connecting structure 122 are insulated from each other, thereby preventing electrical connection between them. The touch electrode layer 130 includes a plurality of first touch electrodes 131 and a plurality of second touch electrodes 132. The first touch electrodes 131 and the second touch electrodes 132 are disposed in the same layer. Each first touch electrode 131 includes a plurality of electrode segments 1311 spaced apart along a first direction. Each second touch electrode 132 extends along a second direction, and the first direction intersects the second direction. Two adjacent electrode segments 1311 in a first touch electrode 131 are respectively located on opposite sides of a second touch electrode 132 in the first direction, and adjacent electrode segments 1311 in a first touch electrode 131 are respectively located on opposite sides of a second touch electrode 132 in the first direction. Two electrode segments 1311 are connected by an overlapping structure 122. The overlapping structure 122 enables electrical connection between two adjacent electrode segments 1311 in the first touch electrode 131, so that the electrical signal in the first touch electrode 131 can be transmitted smoothly, ensuring that the first touch electrode 131 and the second touch electrode 132 can work normally on the same plane. Compared with the prior art where the touch electrode layer 130 is provided with two layers of electrodes, the display panel 100 provided in this application embodiment only needs to be provided with one layer of electrodes, which can significantly reduce the space occupied by the touch electrode layer 130.

[0061] like Figure 4-6 As shown, in some optional embodiments, the display panel 100 further includes a first encapsulation layer 140, at least a portion of which is located between the auxiliary electrode 120 and the touch electrode layer 130. The first encapsulation layer 140 may be made of an insulating material to form an insulating layer between the auxiliary electrode 120 and the touch electrode layer 130.

[0062] Preferably, the first encapsulation layer 140 may include inorganic materials, such as silicon oxide and silicon nitride, to insulate the auxiliary electrode 120 from the touch electrode layer 130.

[0063] Preferably, a connection through hole 141 is provided on the first encapsulation layer 140, and a transition connection structure 142 is provided in the connection through hole 141. The connected electrode sub-segment 1311 and the overlapping structure 122 are connected through the transition connection structure 142 in the connection through hole 141.

[0064] Each overlap structure 122 can be connected to two adjacent electrode segments 1311 in a first touch electrode 131. The aforementioned connected electrode segments 1311 and overlap structure 122 can be understood as electrode segment 1311 and overlap structure 122 connected to the electrode segment 1311.

[0065] The orthographic projections of two adjacent electrode segments 1311 in the first touch electrode 131 onto the substrate 110 can intersect with the orthographic projections of the overlapping structure 122 connected to these two adjacent electrode segments 1311 onto the substrate 110, respectively. A connecting via 141 can be disposed between the electrode segments 1311 and the overlapping structure 122 of the first touch electrode 131, meaning that the orthographic projection of the connecting via 141 onto the substrate 110 can simultaneously intersect or coincide with the orthographic projections of both the electrode segments 1311 and the overlapping structure 122 connected to them onto the substrate 110. This allows both the electrode segments 1311 and the overlapping structure 122 connected to them to be connected to the transition connection structure 142 in the connecting via 141.

[0066] It should be noted that the transition connection structure 142 can be fabricated together with the touch electrode layer 130. For example, after the first encapsulation layer 140 is fabricated, the material of the first encapsulation layer 140 at the location of the connection via 141 can be removed from the first encapsulation layer 140 to form the connection via 141. Then, the material of the touch electrode layer 130 can be applied to the side of the first encapsulation layer 140 away from the substrate 110. A portion of the material of the touch electrode layer 130 will fill the connection via 141, and another portion will cover the side of the first encapsulation layer 140 away from the substrate 110. The material of the touch electrode layer 130 filling the connection via 141 can form the transition connection structure 142, while the remaining material of the touch electrode layer 130 can be used to form the touch electrode layer 130.

[0067] In this embodiment, the display panel 100 further includes a first encapsulation layer 140. At least a portion of the first encapsulation layer 140 is located between the auxiliary electrode 120 and the touch electrode layer 130. The first encapsulation layer 140 may include inorganic materials. The auxiliary electrode 120 can be encapsulated by the first encapsulation layer 140 to prevent the first touch electrode 131 and the second touch electrode 132 of the touch electrode layer 130 from contacting the auxiliary electrode 120, thereby affecting the electrical signal transmission of the first touch electrode 131 and the second touch electrode 132. A connection through hole 141 is provided on the first encapsulation layer 140, and a transition connection structure 142 is provided in the connection through hole 141. The connected electrode segments 1311 and the overlapping structure 122 can be indirectly connected through the transition connection structure 142 in the connection through hole 141, thereby realizing the electrical connection between the connected electrode segments 1311 through the transition connection structure 142 and the overlapping structure 122.

[0068] like Figure 5 or Figure 6 As shown, in some optional embodiments, the display panel 100 further includes a second encapsulation layer 150, which covers the touch electrode layer 130. The second encapsulation layer 150 may be located on the side of the first encapsulation layer 140 away from the substrate 110. The touch electrode layer 130 can be encapsulated by the second encapsulation layer 150, thereby fixing the first touch electrode 131 and the second touch electrode 132 of the touch electrode layer 130 and isolating the first touch electrode 131 and the second touch electrode 132 from unrelated electronic components, thus protecting the first touch electrode 131 and the second touch electrode 132.

[0069] like Figure 6 As shown, in some optional embodiments, the second encapsulation layer 150 includes a first inorganic encapsulation layer 151, an organic encapsulation layer 152, and a second inorganic encapsulation layer 153; the first inorganic encapsulation layer 151 is located on the side of the first encapsulation layer 140 facing away from the substrate 110, the organic encapsulation layer 152 is located on the side of the first inorganic encapsulation layer 151 facing away from the substrate 110, and the second inorganic encapsulation layer 153 is located on the side of the organic encapsulation layer facing away from the substrate 110.

[0070] The first inorganic encapsulation layer 151 and the second inorganic encapsulation layer 153 can be chemical vapor deposition (CVD) encapsulation layers formed by a chemical vapor deposition (CVD) process. For example, the materials of the first inorganic encapsulation layer 151 and the second inorganic encapsulation layer 153 can include inorganic materials such as silicon dioxide (SiO2) and silicon nitride (Si3N4). The organic encapsulation layer 152 can be an inkjet-printed encapsulation layer formed by an inkjet printing (IJP) process. For example, the materials of the organic encapsulation layer 152 can include organic materials such as organic resin and epoxy resin. By providing the organic encapsulation layer 152 between the first inorganic encapsulation layer 151 and the second inorganic encapsulation layer 153, the organic encapsulation layer 152 can serve as a planarization layer, planarizing the second encapsulation layer 150 and avoiding stress concentration problems caused by excessive thickness of the inorganic encapsulation layer.

[0071] like Figure 3-6 As shown, in some optional embodiments, a plurality of electrode segments 1311 included in a first touch electrode 131 may be located in a straight line. The electrode segments 1311 included in the plurality of first touch electrodes 131 may be parallel to each other. In the embodiments of this application, the plurality of electrode segments 1311 included in a first touch electrode 131 may be located in a straight line, making the first touch electrode 131 have a simple structure and facilitating the fabrication of the first touch electrode 131.

[0072] like Figure 3 and Figure 7 As shown in Figure 9, in some optional embodiments, the auxiliary cathode 121 includes an isolation structure 1211, which defines a plurality of isolation openings 124, and at least a portion of the structure of the light-emitting device 161 is disposed in the isolation openings 124. Optionally, an isolation space 123 surrounding the overlapping structure 122 may exist between the auxiliary cathode 121 and the overlapping structure 122. The specific implementation of the isolation space 123 can be referred to the above embodiments, and will not be repeated here.

[0073] The light-emitting device 161 may include a first electrode 1611, a light-emitting functional layer 1612, and a second electrode 1613 arranged sequentially in a direction away from the substrate 110. For example... Figure 7 and 8 As shown, the first electrode 1611, the light-emitting functional layer 1612, and the second electrode 1613 can all be disposed in the isolation opening 124; or, as shown... Figure 9a As shown, a portion of the structure of the light-emitting functional layer 1612 and a portion of the structure of the second electrode 1613 can be disposed in the isolation opening 124.

[0074] The first electrode 1611 is made of a conductive material. This conductive material can include metals, metal oxides, such as titanium (Ti) or silver (Ag), alloys formed from various metals including titanium (Ti) and silver (Ag), materials with high work functions such as indium tin oxide (ITO) or indium zinc oxide (IZO), or composite materials of the above conductive materials. The second electrode 1613 can be made of a transparent metal oxide, such as ITO or IZO. Either the first electrode 1611 or the second electrode 1613 is an anode, and the other is a cathode. For example, the first electrode 1611 is the anode, and the second electrode 1613 is the cathode. Alternatively, the first electrode 1611 is the cathode, and the second electrode 1613 is the anode.

[0075] The light-emitting functional layer 1612 may include a first functional layer, a light-emitting layer, and a second functional layer, which are sequentially stacked on the first electrode 1611. The first functional layer may include a hole injection layer, a hole transport layer, an electron blocking layer, etc. The second functional layer may include an electron injection layer, an electron transport layer, a hole blocking layer, etc. Power is supplied to the light-emitting functional layer 1612 through the first electrode 1611 and the second electrode 1613, enabling the light-emitting functional layer 1612 to emit light based on the first functional layer, the light-emitting layer, and the second functional layer.

[0076] In this embodiment, a plurality of isolation openings 124 can be defined by the isolation structure 1211, and at least a portion of the structure of the light-emitting device 161 can be disposed in the isolation openings 124. Thus, the isolation structure 1211 can be used to separate the functional film layers of adjacent light-emitting devices 161. Therefore, in the evaporation process of multiple functional film layers, only the entire surface of the display panel 100 needs to be evaporated, without the need to use a mask to evaporate the area where the light-emitting device 161 is located to form the functional film layer. Therefore, the evaporation process using the isolation structure 1211 does not need to consider the alignment accuracy problem during evaporation, thereby allowing the gap between the light-emitting devices 161 to be designed to be smaller, increasing pixel density.

[0077] like Figure 7 As shown in Figure 9, in some optional embodiments, the isolation structure 1211 includes a first end 1212 and a second end 1213. The first end 1212 is located on the side of the isolation structure 1211 close to the substrate 110, and the second end 1213 is located on the side of the isolation structure 1211 away from the substrate 110. The orthographic projection of the first end 1212 on the substrate 110 is within the orthographic projection of the second end 1213 on the substrate 110.

[0078] The orthographic projection of the first end 1212 of the isolation structure 1211 facing the substrate 110 onto the substrate 110 is located within the orthographic projection of the second end 1213 of the isolation structure 1211 facing away from the substrate 110 onto the substrate 110. This allows the isolation structure 1211 to be wider at the top and narrower at the bottom, ensuring that the first functional layer is disconnected from other parts formed on the isolation structure 1211 during the vapor deposition process due to the shielding effect of the isolation structure 1211, thereby guaranteeing the isolation effect of the isolation structure 1211. For example, the orthographic projection of the edge of the vapor-deposited first functional layer onto the substrate 110 can be located outside the orthographic projection of the first end 1212 onto the substrate 110 and within the orthographic projection of the second end 1213 onto the substrate 110. That is, the vapor-deposited first functional layer will not be connected to the conductive portion (e.g., the first end 1212) of the isolation structure 1211.

[0079] like Figure 8As shown, in some optional embodiments, the first end 1212 and the second end 1213 of the isolation structure 1211 are an integral structure; that is, the integral structure can be an independent film layer, and there is no physical interface in the film layer, and at least the first end 1212 and the second end 1213 of the isolation structure 1211 are two parts of the integral structure. Furthermore, the portion of the isolation structure 1211 located between two adjacent isolation openings 124 has a cross-sectional profile that is an inverted trapezoid, obtained by a plane intersecting the two adjacent isolation openings 124 and perpendicular to the surface of the substrate 110. The plane intersecting the two adjacent isolation openings 124 and perpendicular to the surface of the substrate 110 can be a plane parallel to the direction from one isolation opening 124 to the other isolation opening 124 and perpendicular to the surface of the substrate 110, i.e., a plane perpendicular to the direction from one isolation opening 124 to the other isolation opening 124. Figure 3 A plane perpendicular to the Y direction. The top edge of the inverted trapezoid is located between the substrate 110 and the bottom edge of the inverted trapezoid. The bottom edge of the inverted trapezoid is the edge of the second end 1213, and the top edge of the inverted trapezoid is the edge of the first end 1212. In this design, the sidewalls of the isolation structure 1211 are inscribed, thereby increasing the isolation effect of the isolation structure 1211.

[0080] like Figure 7 and Figure 9a As shown, in some optional embodiments, the isolation structure 1211 includes a first isolation portion 1214 and a second isolation portion 1215 stacked on the substrate 110. The first isolation portion 1214 is located between the substrate 110 and the second isolation portion 1215, and the orthographic projection of the first isolation portion 1214 on the substrate 110 lies within the orthographic projection of the second isolation portion 1215 on the substrate 110. As a possible implementation, the first isolation portion 1214 can constitute the aforementioned first end portion 1212, and the second isolation portion 1215 can constitute the second end portion 1213.

[0081] The first isolation portion 1214 of the isolation structure 1211 is located between the substrate 110 and the second isolation portion 1215. The orthographic projection of the first isolation portion 1214 on the substrate 110 is within the orthographic projection of the second isolation portion 1215 on the substrate 110. This allows the isolation structure 1211 to be wider at the top and narrower at the bottom, so that the first functional layer will be disconnected from other parts formed on the isolation structure 1211 during the vapor deposition process due to the shielding effect of the isolation structure 1211, thereby ensuring the isolation effect of the isolation structure 1211. For example, the orthographic projection of the edge of the vapor-deposited light-emitting functional layer 1612 on the substrate 110 can be located outside the orthographic projection of the first isolation portion 1214 on the substrate 110 and within the orthographic projection of the second end portion 1213 on the substrate 110. That is, the vapor-deposited light-emitting functional layer 1612 will not be connected to the conductive portion (e.g., the first isolation portion 1214) of the isolation structure 1211.

[0082] Optionally, the portion of the first isolation portion 1214 located between two adjacent isolation openings 124 may have a trapezoidal profile when its cross-section is cut by a plane intersecting the two adjacent isolation openings 124 and perpendicular to the surface of the substrate 110. The second isolation portion 1215 is located at the top edge of the first isolation portion 1214 away from the substrate 110. In this case, the edge of the surface of the first isolation portion 1214 facing the substrate 110 is the edge of the first end portion 1212, which facilitates the deposition of the vapor deposition material of the second electrode 1613 on the sidewall of the first isolation portion 1214, thereby improving the overlap yield between the second electrode 1613 and the first isolation portion 1214. Furthermore, the portion of the second isolation portion 1215 located between two adjacent isolation openings 124 may have a trapezoidal profile when its cross-section is cut by a plane intersecting the two adjacent isolation openings 124 and perpendicular to the surface of the substrate 110. The edge of the surface of the second isolation portion 1215 facing the first isolation portion 1214 is the edge of the second end portion 1213.

[0083] It should be understood that the regular and inverted trapezoids mentioned in the embodiments of this application can be strictly regular and inverted trapezoids; or, they can be generally presented shapes, for example, whose top and bottom are parallel or conformal (one side surface rises and falls approximately simultaneously with the other side surface), and the size of the bottom is larger than the size of the top, and the shape of the edges on both sides is approximately axially symmetrical; and the shape of its top, bottom and sides is not limited to being planar.

[0084] like Figure 9b As shown, in some optional embodiments, the overlapping structure 122 includes a first portion 1221 and a second portion 1222. The first portion 1221 is disposed on the same layer as the first isolation portion 1214, and the second portion 1222 is disposed on the same layer as the second isolation portion 1215. The first portion 1221 of the overlapping structure 122 is located between the second portion 1222 and the substrate 110. The first portion 1221 and the first isolation portion 1214 can be made of the same material, and the second portion 1222 and the second isolation portion 1215 can be made of the same material. Therefore, the materials of the first portion 1221 and the first isolation portion 1214, and the materials of the second portion 1222 and the second isolation portion 1215 can be formed simultaneously during the fabrication of the display panel 100, thereby improving the efficiency of fabricating the display panel 100.

[0085] As a feasible implementation, similar to how the orthographic projection of the first isolation portion 1214 on the substrate 110 is located within the orthographic projection of the second isolation portion 1215 on the substrate 110, the orthographic projection of the first portion 1221 on the substrate 110 is located within the orthographic projection of the second portion 1222 on the substrate 110. Thus, the first portion 1221 and the second portion 1222 of the overlapping structure 122 can be prepared by the same method as the preparation of the first isolation portion 1214 and the second isolation portion 1215, without having to change the preparation method, thereby simplifying the preparation process of the display panel 100.

[0086] like Figure 10 As shown, in some optional embodiments, the isolation structure 1211 includes a third isolation portion 1216, which is located on the side of the first isolation portion 1214 near the substrate 110. The orthographic projection of the first isolation portion 1214 on the substrate 110 is located within the orthographic projection of the third isolation portion 1216 on the substrate 110.

[0087] Along the direction away from the substrate 110, the first isolation portion 1214, the second isolation portion 1215, and the third isolation portion 1216 can be stacked sequentially. The first isolation portion 1214, the second isolation portion 1215, and the third isolation portion 1216 can include conductive materials, such as silver, copper, and aluminum, so that the isolation structure 1211 can provide a cathode voltage to the light-emitting device 161. Optionally, the side of the first isolation portion 1214 closest to the substrate 110 can form the aforementioned first end portion 1212, and the side of the third isolation portion 1216 away from the substrate 110 can form the second end portion 1213.

[0088] The width of the third isolation portion 1216 in the first direction X can be smaller than the width of the first isolation portion 1214 in the first direction X, so that the orthographic projection of the third isolation portion 1216 on the substrate 110 is located within the orthographic projection of the first isolation portion 1214 on the substrate 110, thereby making it easier for the second electrode 1613 to be connected to the isolation structure 1211 when the light-emitting device 161 is formed by vapor deposition.

[0089] Preferably, the overlapping structure 122 further includes a third portion, which can be disposed in the same layer as the third isolation portion 1216, that is, the third portion of the overlapping structure 122 can be located on the side of the first portion 1221 closer to the substrate 110. Furthermore, the third portion can be made of the same material as the third isolation portion 1216, thereby allowing the materials of the third portion and the third isolation portion 1216 to be formed simultaneously during the fabrication of the display panel 100, thus improving the efficiency of the display panel 100 fabrication.

[0090] As a feasible implementation, similar to how the orthographic projection of the first isolation portion 1214 on the substrate 110 is located within the orthographic projection of the third isolation portion 1216 on the substrate 110, the orthographic projection of the first part 1221 of the overlapping structure 122 on the substrate 110 can be located within the orthographic projection of the third part on the substrate 110, so that the construction of the overlapping structure 122 and the isolation structure 1211 is as consistent as possible.

[0091] In some optional embodiments, the material of the first isolation portion 1214 may include titanium, the material of the second isolation portion 1215 may include aluminum, and the material of the third isolation portion 1216 may include molybdenum, so as to achieve conductivity of the first isolation portion 1214, the second isolation portion 1215, and the third isolation portion 1216 in the isolation structure 1211. In some optional embodiments, the material of the first portion 1221 of the overlapping structure 122 may include titanium, the material of the second portion 1222 may include aluminum, and the material of the third portion may include molybdenum, so as to achieve conductivity of the first portion 1221, the second portion, and the third portion of the overlapping structure 122.

[0092] like Figure 9a and Figure 10 As shown, in some optional embodiments, the display panel 100 further includes a pixel defining layer 170, which includes a pixel defining portion 171 and a pixel opening 172. At least a portion of the first electrode 1611 is exposed through the pixel opening 172, and an isolation structure 1211 and / or an overlap structure 122 are disposed on the side of the pixel defining portion 171 away from the substrate 110.

[0093] The pixel defining layer 170 may be located between the isolation structure 1211 and the layer containing the first electrode 1611, thereby isolating the pixel defining layer 170 from the first electrode 1611. And / or, the pixel defining layer 170 may be located between the overlapping structure 122 and the layer containing the first electrode 1611, thereby isolating the overlapping structure 122 from the first electrode 1611. The pixel defining layer 170 may also cover the gap between two adjacent first electrodes 1611, thereby isolating the two adjacent first electrodes 1611. The pixel defining layer 170 is made of an insulating material, which may be a silicon-containing inorganic material, such as silicon oxide, silicon nitride, or a multilayer composite material.

[0094] In this embodiment, the pixel defining layer 170 defines a pixel opening 172, and the light-emitting functional layer 1612 can cover the pixel opening 172 to form a light-emitting device 161. The pixel opening 172 and the isolation opening 124 correspond to each other and are connected to each other. The orthographic projection of the pixel opening 172 on the substrate 110 is located within the orthographic projection of the corresponding isolation opening 124 on the substrate 110. By designing the pixel defining layer 170, the isolation structure 1211 and the overlapping structure 122 are disposed on the side of the pixel defining portion 171 away from the substrate 110. This eliminates the risk of the first electrode 1611 overlapping with the adjacent isolation structure 1211 (e.g., the first end 1212 in which it is conductive) and the risk of the first electrode 1611 overlapping with the adjacent overlapping structure 122. This allows the first electrode 1611 to have a larger design size to ensure the design area of ​​the effective functional area.

[0095] like Figure 7 As shown in Figure 9, in some alternative embodiments, the second electrode 1613 overlaps with the first end 1212. Optionally, the first end 1212 of the isolation structure 1211 may be made of a conductive material, and the second electrode 1613 may overlap with the side surface of the first end 1212. In this case, the second electrode 1613 may be a cathode, thereby the second electrode 1613 may obtain a cathode voltage from the auxiliary cathode 121 based on the isolation structure 1211.

[0096] like Figure 3 As shown, in some optional embodiments, the orthographic projection of the first touch electrode 131 on the substrate 110 and the orthographic projection of the second touch electrode 132 on the substrate 110 (i.e., Figure 3 A projection grid can be formed by the orthogonal projection of the isolation opening 124 in the direction opposite to the Z direction. The orthogonal projection of the isolation opening 124 on the substrate 110 is located in the grid holes of the projection grid. Thus, the light emitted by the light-emitting device 161 disposed in the isolation opening 124 is not blocked by the first touch electrode 131 and the second touch electrode 132, avoiding the attenuation of the light emitted by the light-emitting device 161 due to the obstruction of the first touch electrode 131 and the second touch electrode 132, so as to ensure the display effect of the display panel 100.

[0097] Embodiments of this application also provide another display panel 100. The display panel 100 includes: a substrate 110; a driving circuit layer disposed on one side of the substrate 110; an auxiliary electrode 120 located on the side of the driving circuit layer away from the substrate 110; the auxiliary electrode 120 includes an auxiliary cathode 121 and an overlapping structure 122 disposed on the same layer, the auxiliary cathode 121 and the overlapping structure 122 being insulated from each other; a touch electrode layer 130 located on the side of the auxiliary electrode 120 away from the substrate 110; the touch electrode layer 130 includes a plurality of first touch electrodes 131, each first touch electrode 131 including a plurality of electrode segments 1311 spaced apart along a first direction, and two adjacent electrode segments 1311 of the first touch electrodes 131 being connected by an overlapping structure 122.

[0098] The driving circuit layer can be used to provide electrical signals to the light-emitting device 161 of the display panel 100, causing the light-emitting device 161 to emit light of a corresponding brightness. The specific operation of the light-emitting device 161 can be referred to the above embodiment, and will not be repeated here.

[0099] As a feasible implementation, the driving circuit layer may include multiple pixel driving circuits, each of which is electrically connected to a light-emitting device 161 and drives the light-emitting device 161 to emit light. The pixel driving circuit may include multiple transistors and capacitors, among other electronic components. For example, each pixel driving circuit may include three transistors and one capacitor, forming a 3T1C (i.e., one driving transistor, two switching transistors, and one capacitor). It may also include more than three transistors and at least one capacitor, such as 4T1C (i.e., one driving transistor, three switching transistors, and one capacitor), 5T1C (i.e., one driving transistor, four switching transistors, and one capacitor), or 7T1C (i.e., one driving transistor, six switching transistors, and one capacitor), etc. The transistors may be thin-film transistors (TFTs), metal oxide semiconductors (MOS), or other switching devices with similar characteristics; the embodiments disclosed herein do not limit the transistors used. The specific implementations of the substrate 110, auxiliary electrode 120, and touch electrode layer 130 can be referred to the above embodiments and will not be repeated here.

[0100] In this embodiment, by placing the auxiliary electrode 120 on the side of the driving circuit layer away from the substrate 110 and placing the touch electrode on the side of the auxiliary electrode 120 away from the substrate 110, the auxiliary electrode 120 can be located between the driving circuit layer and the touch electrode layer 130. This reduces the electric field coupling or electric field induction between the touch electrode layer 130 and the driving circuit layer, preventing crosstalk between the electrical signals of the touch electrode and the driving circuit layer. The touch electrode layer 130 includes multiple first touch electrodes 131, each comprising multiple electrode segments 1311 spaced apart along a first direction. Adjacent electrode segments 1311 are connected by an overlap structure 122. This allows the electrode segments 1311 of the first touch electrode 131 to transition via the overlap structure 122 included in the auxiliary electrode 120, without occupying space in the touch electrode layer 130, making the arrangement of the touch electrode layer 130 more flexible.

[0101] In some optional embodiments, the touch electrode layer 130 further includes a plurality of second touch electrodes 132, the first touch electrode 131 and the second touch electrode 132 are disposed in the same layer, the second touch electrode 132 extends along a second direction, and the first direction intersects the second direction; two adjacent electrode segments 1311 in a first touch electrode 131 are respectively located on opposite sides of a second touch electrode 132 in the first direction.

[0102] In some alternative embodiments, the display panel 100 further includes a second encapsulation layer 150 covering the touch electrode layer 130. Along a direction away from the substrate 110, the second encapsulation layer 150 includes a first inorganic encapsulation layer 151, an organic encapsulation layer 152, and a second inorganic encapsulation layer 153 disposed sequentially.

[0103] It should be understood that the display panel 100 provided in this application embodiment is based on the same inventive concept as the aforementioned display panel 100 embodiment and can achieve the same effect. The structure and materials involved in the preparation method of the display panel 100 provided in this application embodiment can be found in the description of the aforementioned display panel 100 embodiment, and will not be repeated here.

[0104] Embodiments of this application also provide a method for manufacturing a display panel 100.

[0105] Figure 11 A flowchart illustrating a method for manufacturing a display panel 100 provided in an embodiment of this application. Figure 12-13 This is a structural diagram corresponding to each step in the manufacturing method of the display panel 100 according to some embodiments.

[0106] The following is in conjunction with the appendix Figure 11-13The following is an illustrative description of the preparation method of the display panel 100 provided in some embodiments of this application.

[0107] S1, see also Figure 12 An auxiliary electrode 120 is formed on one side of the substrate 110.

[0108] The auxiliary electrode 120 includes an auxiliary cathode 121 and an overlapping structure 122 disposed in the same layer, and the auxiliary cathode 121 and the overlapping structure 122 are insulated from each other.

[0109] S2, see also Figure 13 A touch electrode layer 130 is formed on the side of the auxiliary electrode 120 that is away from the substrate 110.

[0110] The touch electrode layer 130 includes a plurality of first touch electrodes 131 and a plurality of second touch electrodes 132. The first touch electrodes 131 and the second touch electrodes 132 are disposed in the same layer. Each first touch electrode 131 includes a plurality of electrode segments 1311 spaced apart along a first direction. Each second touch electrode 132 extends along a second direction, and the first direction intersects with the second direction. Two adjacent electrode segments 1311 in a first touch electrode 131 are located on opposite sides of a second touch electrode 132 in the first direction, and two adjacent electrode segments 1311 in a first touch electrode 131 are connected by an overlapping structure 122.

[0111] The display panel 100 provided in this application embodiment can achieve electrical connection between two adjacent electrode segments 1311 in the first touch electrode 131 through the overlapping structure 122, so that the electrical signal in the first touch electrode 131 can be transmitted smoothly, so as to ensure that the first touch electrode 131 and the second touch electrode 132 can work normally on the same plane. Compared with the case of two layers of electrodes in the touch electrode layer 130 in the prior art, the display panel 100 provided in this application embodiment only needs to be provided with one layer of electrodes, which can significantly reduce the space occupied by the touch electrode layer 130.

[0112] It should be understood that the method for preparing the display panel 100 provided in this application is based on the same inventive concept as the aforementioned embodiment of the display panel 100 and can achieve the same effect. The structure and materials involved in the method for preparing the display panel 100 can be found in the description in the aforementioned embodiment of the display panel 100, and will not be repeated here.

[0113] It should be noted that, depending on the implementation needs, the various components / steps described in the embodiments of this application can be broken down into more components / steps, or two or more components / steps or parts of the operation of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of this application.

[0114] The methods described in the embodiments of this application can be implemented in hardware, firmware, or as software or computer code that can be stored in a recording medium (such as a CD-ROM, RAM, floppy disk, hard disk, or magneto-optical disk), or as computer code downloaded over a network that is originally stored in a remote recording medium or a non-transitory machine-readable medium and will be stored in a local recording medium. Thus, the methods described herein can be stored on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware (such as an Application Specific Integrated Circuit (ASIC) or a Field Programmable Gate Array (FPGA)). It is understood that the computer, processor, microprocessor controller, or programmable hardware includes storage components (e.g., Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory, etc.) capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods described herein are implemented. Furthermore, when a general-purpose computer accesses the code used to implement the methods shown herein, the execution of the code transforms the general-purpose computer into a dedicated computer for executing the methods shown herein.

[0115] Those skilled in the art will recognize that the units and method steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this application.

[0116] The above embodiments are only used to illustrate the embodiments of this application, and are not intended to limit the embodiments of this application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of this application. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of this application, and the patent protection scope of the embodiments of this application should be defined by the claims.

Claims

1. A display panel, characterized in that, include: substrate; An auxiliary electrode is located on one side of the substrate; the auxiliary electrode includes an auxiliary cathode and an overlapping structure disposed in the same layer, and the auxiliary cathode and the overlapping structure are insulated from each other; A touch electrode layer is located on the side of the auxiliary electrode that is away from the substrate; The touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes are disposed in the same layer, each first touch electrode includes a plurality of electrode sub-segments spaced apart along a first direction, each second touch electrode extends along a second direction, the first direction intersects the second direction; two adjacent electrode sub-segments in a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction, and two adjacent electrode sub-segments in a first touch electrode are connected by an overlapping structure.

2. The display panel according to claim 1, characterized in that, The display panel further includes a first encapsulation layer, at least a portion of which is located between the auxiliary electrode and the touch electrode layer; Preferably, a connection through hole is formed on the first encapsulation layer, and a transition connection structure is provided in the connection through hole. The connected electrode sub-segment and the overlapping structure are connected through the transition connection structure in the connection through hole. Preferably, the first encapsulation layer comprises an inorganic material.

3. The display panel according to claim 2, characterized in that, The display panel further includes a second encapsulation layer that covers the touch electrode layer.

4. The display panel according to claim 3, characterized in that, The second encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer; the organic encapsulation layer is located on the side of the first inorganic encapsulation layer opposite to the substrate, and the second inorganic encapsulation layer is located on the side of the organic encapsulation layer opposite to the substrate.

5. The display panel according to any one of claims 1-4, characterized in that, The first touch electrode is a sensing electrode, and the second touch electrode is a driving electrode; or, the first touch electrode is a driving electrode, and the second touch electrode is a sensing electrode.

6. The display panel according to any one of claims 1-4, characterized in that, The auxiliary cathode includes an isolation structure that defines a plurality of isolation openings, in which at least a portion of the structure of a light-emitting device is disposed. The light-emitting device includes a first electrode, a light-emitting functional layer, and a second electrode arranged sequentially in a direction away from the substrate. Preferably, there is an isolation space surrounding the overlapping structure between the isolation structure and the overlapping structure.

7. The display panel according to claim 6, characterized in that, The isolation structure includes a first isolation portion and a second isolation portion stacked on the substrate, wherein the first isolation portion is located between the substrate and the second isolation portion, and 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.

8. The display panel according to claim 7, characterized in that, The overlapping structure includes a first part and a second part, wherein the first part is disposed on the same layer as the first isolation portion, and the second part is disposed on the same layer as the second isolation portion; and the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate.

9. The display panel according to claim 8, characterized in that, The isolation structure includes a third isolation portion, which is located on the side of the first isolation portion closer to the substrate, and the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate. Preferably, the overlapping structure further includes a third part, which is disposed on the same layer as the third isolation portion, and the orthographic projection of the first part on the substrate is located within the orthographic projection of the third part on the substrate.

10. The display panel according to claim 6, characterized in that, The display panel further includes a pixel defining layer, which includes a pixel defining portion and a pixel opening. At least a portion of the first electrode is exposed through the pixel opening, and the isolation structure and / or the overlapping structure are disposed on the side of the pixel defining portion away from the substrate.

11. A display panel, characterized in that, include: substrate; A driving circuit layer is disposed on one side of the substrate; The auxiliary electrode is located on the side of the driving circuit layer opposite to the substrate; The auxiliary electrode includes an auxiliary cathode and an overlapping structure arranged in the same layer, wherein the auxiliary cathode and the overlapping structure are insulated from each other. A touch electrode layer is located on the side of the auxiliary electrode that is away from the substrate; The touch electrode layer includes a plurality of first touch electrodes, each first touch electrode including a plurality of electrode sub-segments spaced apart along a first direction, and two adjacent electrode sub-segments of the first touch electrode are connected by an overlapping structure.

12. The display panel according to claim 11, characterized in that, The touch electrode layer further includes a plurality of second touch electrodes. The first touch electrode and the second touch electrode are disposed in the same layer. The second touch electrode extends along a second direction, and the first direction intersects with the second direction. Two adjacent electrode segments in a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction.

13. The display panel according to claim 11, characterized in that, The display panel further includes a second encapsulation layer that covers the touch electrode layer. Along a direction away from the substrate, the second encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer arranged sequentially.

14. A method for manufacturing a display panel, characterized in that, The method includes: An auxiliary electrode is formed on one side of the substrate; the auxiliary electrode includes an auxiliary cathode and an overlapping structure disposed in the same layer, wherein the auxiliary cathode and the overlapping structure are insulated from each other. A touch electrode layer is formed on the side of the auxiliary electrode facing away from the substrate; wherein the touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes are disposed in the same layer, each first touch electrode includes a plurality of electrode sub-segments spaced apart along a first direction, each second touch electrode extends along a second direction, the first direction intersecting the second direction; two adjacent electrode sub-segments in a first touch electrode are respectively located on opposite sides of a second touch electrode in the first direction, and two adjacent electrode sub-segments in a first touch electrode are connected by an overlapping structure.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-13.

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