Touch display panel, method for manufacturing touch display panel, and display device

Abstract

To solve a problem of a touch display panel, a manufacturing method of the touch display panel, and a display device that, in a conventional technology, the touch display device requires a high cost and is thick.SOLUTION: A touch display panel includes: a substrate; an isolation structure layer which is located at one side of the substrate and surrounds the substrate so as to form a plurality of isolation openings; a plurality of light emitting elements which contains a first electrode adjacent to the substrate and located in the isolation openings; and touch electrodes including a first touch electrode and a second touch electrode, where the second touch electrode contains a plurality of body sections and cross-linking sections, the cross-linking sections and the body sections are provided in different layers, the cross-linking sections are connected to the adjacent body sections via via-holes, an orthographic projection of the cross-linking sections and an orthographic projection of the first touch electrode intersect on the substrate, and the orthographic projection of the touch electrode is located in an orthographic projection range of the isolation structure layer. The first touch electrode and the body sections are provided in the same layer with the first electrode or the isolation structure layer.SELECTED DRAWING: Figure 5A

Description

[Technical Field]

[0001] The present application relates to the field of display technology, and in particular to a touch display panel, a manufacturing method for a touch display panel, and a display device. [Background technology]

[0002] Smart display devices are usually equipped with touch functions, but in the related art, smart display devices with touch functions are expensive to produce and have a large product thickness, which is disadvantageous for making the product thinner. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of this, the embodiments of the present application provide a touch display panel, a manufacturing method thereof, and a display device, which solve the problems of high cost and thick thickness of touch display devices. [Means for solving the problem]

[0004] A first aspect of the present application provides a touch display panel. The touch display panel includes a substrate, an isolation structure layer located on one side of the substrate, a plurality of light-emitting elements, and a touch electrode. The isolation structure layer defines a plurality of isolation openings. The light-emitting elements are located in the isolation openings, and the light-emitting elements include a first electrode adjacent to the substrate. The touch electrode includes a first touch electrode and a second touch electrode. The second touch electrode includes a plurality of body portions and bridge portions, the bridge portions and the body portions being located on different layers, the bridge portions connecting adjacent body portions with via holes, and the orthogonal projections of the bridge portions and the first touch electrode intersect on the substrate. The first touch electrode, the body portion, and the first electrode are located on the same layer, or the first touch electrode, the body portion, and the isolation structure layer are located on the same layer.

[0005] Based on the first aspect, in some embodiments, the orthogonal projection of the touch electrode on the substrate is in a grid pattern, and each grid hole surrounds the orthogonal projection of at least one light-emitting element on the substrate.

[0006] Based on the first aspect, in some embodiments, each lattice hole surrounds the orthogonal projections of a plurality of light-emitting elements on the substrate, and a plurality of light-emitting elements surrounded by the same lattice hole constitute one pixel array repeat unit.

[0007] Based on the first aspect, in some embodiments, each lattice hole surrounds the orthogonal projections on the substrate of a plurality of light-emitting elements, and the plurality of light-emitting elements surrounded by the same lattice hole include a red light-emitting element, a green light-emitting element, and a blue light-emitting element.

[0008] Based on the first aspect, in some embodiments, the bridge portion includes at least one conductive wire, and preferably, the multiple main body portions are arranged sequentially along a first direction parallel to the substrate, and the conductive wire extends along the first direction.

[0009] Based on the first aspect, in some embodiments, the at least one conductive wire includes a plurality of conductive wires, the plurality of conductive wires being arranged sequentially along a second direction parallel to the substrate, and the first direction and the second direction intersect.

[0010] Based on the first aspect, in some embodiments, the first touch electrode extends along a second direction parallel to the substrate.

[0011] Based on the first aspect, in some embodiments, the first touch electrode and the main body portion are disposed in the same layer as the first electrode, and the bridging portion is disposed in the same layer as the isolation structure layer.

[0012] Based on the first aspect, in some embodiments, the first touch electrode and the body are both lattice-like structures, and each lattice hole surrounds at least one first electrode.

[0013] Based on the first aspect, in some embodiments, some of the isolation structure layers have at least one strip-shaped through hole, and the bridge portion is located within the strip-shaped through hole and spaced apart from the isolation structure layer.

[0014] Based on the first aspect, in some embodiments, the touch display panel further includes an insulating portion filling a gap region between the isolation structure layer and the bridging portion.

[0015] Based on the first aspect, in some embodiments, the touch display panel further includes a pixel definition layer located on a side of the isolation structure layer facing the substrate, wherein the orthogonal projection of the isolation structure layer on the substrate is located within the range of the orthogonal projection of the pixel definition layer, the pixel definition layer defines a pixel opening, the light-emitting element is also located within the pixel opening, and the bridging portion contacts the main body portion through a through hole penetrating the pixel definition layer.

[0016] Based on the first aspect, in some embodiments, on the substrate, the orthogonal projection of the touch electrode is located in an interval region between the orthogonal projections of each of the plurality of light-emitting elements.

[0017] Based on the first aspect, in some embodiments, the first touch electrode and the main body portion are disposed in the same layer as the isolation structure layer, and the bridge portion is disposed in the same layer as the first electrode.

[0018] Based on the first aspect, in some embodiments, a portion of the isolation structure layer has a plurality of lattice-shaped through-holes, and the first touch electrode and the main body are located in the lattice-shaped through-holes and spaced apart from the isolation structure layer.

[0019] Based on the first aspect, in some embodiments, the touch display panel further includes an insulating portion filled between the isolation structure layer and the first touch electrode and between the isolation structure layer and the body portion.

[0020] Based on the first aspect, in some embodiments, the touch display panel further includes a pixel definition layer located on a side of the isolation structure layer facing the substrate, wherein the orthogonal projection of the isolation structure layer on the substrate is located within the range of the orthogonal projection of the pixel definition layer, the pixel definition layer defines a pixel opening, the light-emitting element is also located within the pixel opening, and the main body portion contacts the bridging portion via a through hole penetrating the pixel definition layer.

[0021] In some embodiments based on the first aspect, the bridge portion is located between adjacent first electrodes.

[0022] In some embodiments based on the first aspect, the substrate includes at least one conductive layer, and the bridge is located within any one of the conductive layers.

[0023] Based on the first aspect, in some embodiments, the at least one conductive layer includes a proximate conductive layer closest to the isolation structure layer, and the bridge portion is located within the proximate conductive layer.

[0024] In accordance with the first aspect, in some embodiments, the conductive layer is located within the substrate.

[0025] Based on the first aspect, in some embodiments, the substrate includes a scanning signal line, an initialization signal line, a power supply signal line, and a data signal line, and the bridging portion is located in the same conductive layer as at least one of the scanning signal line, the initialization signal line, the power supply signal line, and the data signal line.

[0026] Based on the first aspect, in some embodiments, the isolation structure layer includes a first surface facing the substrate and a second surface facing away from the substrate, and an orthogonal projection of the first surface is located within a range of an orthogonal projection of the second surface on the substrate.

[0027] Based on the first aspect, in some embodiments, the bridging portion and the isolation structure layer are arranged in the same layer, some of the isolation structure layers have at least one strip-shaped through hole, and the bridging portion is located within the strip-shaped through hole and arranged spaced apart from the isolation structure layer.

[0028] Based on the first aspect, in some embodiments, the first touch electrode and the main body are arranged in the same layer as the isolation structure layer, and some of the isolation structure layers have a plurality of lattice-shaped through-holes, and the first touch electrode and the main body are located in the lattice-shaped through-holes and spaced apart from the isolation structure layer.

[0029] Based on the first aspect, in some embodiments, the touch display panel further includes a plurality of inorganic sealing units, the inorganic sealing units and the isolation openings correspond one-to-one, and the orthogonal projections of the inorganic sealing units cover the orthogonal projections of the isolation openings on the substrate.

[0030] A second aspect of the present application provides a touch display panel. The touch display panel includes a substrate including at least one conductive layer, an isolation structure layer located on one side of the substrate and defining a plurality of isolation openings, a plurality of light-emitting elements, and a touch electrode. The light-emitting element includes a first electrode located in the isolation opening and adjacent to the substrate. The touch electrode includes a first touch electrode and a second touch electrode, and the second touch electrode includes a plurality of body portions and bridge portions. The first touch electrode, the body portion, and the first electrode are disposed on the same layer, or the first touch electrode, the body portion, and the isolation structure layer are disposed on the same layer. The bridge portions are disposed in one of the conductive layers and connect adjacent body portions by via holes. The orthogonal projections of the bridge portions and the orthogonal projections of the first touch electrodes intersect on the substrate.

[0031] A third aspect of the present application provides a method for manufacturing a touch display panel, the method including: simultaneously manufacturing a plurality of first electrodes, a first touch electrode, and a plurality of body portions on a substrate, where the first touch electrode and the body portions are each located between adjacent first electrodes; manufacturing an isolation structure layer and a bridging portion on the substrate, where an orthogonal projection of the isolation structure layer on the substrate covers an orthogonal projection of the first touch electrode and an orthogonal projection of each of the plurality of body portions, the isolation structure layer defines isolation openings, the isolation openings expose at least a portion of the first electrodes, some of the isolation structure layers include through holes, the bridging portions are located in the through holes and spaced apart from the isolation structure layer, both ends of the bridging portions are electrically connected to adjacent body portions, and the orthogonal projections of the bridging portions and the orthogonal projections of the first touch electrodes on the substrate intersect; and sequentially manufacturing an emission layer and a second electrode in the isolation openings to obtain a touch display panel.

[0032] Based on the third aspect, in some embodiments, the method for manufacturing a touch display panel further includes a step of manufacturing an organic sealing layer on the side of the second electrode facing away from the substrate, wherein the organic sealing layer fills the gap area between the isolation structure layer and the bridging portion, and on the substrate, the orthogonal projection of the organic sealing layer covers the orthogonal projection of the second electrode, the orthogonal projection of the isolation structure layer, and the orthogonal projection of the bridging portion.

[0033] A fourth aspect of the present application provides a method for manufacturing a touch display panel, the method including: simultaneously fabricating a plurality of first electrodes and bridging portions on a substrate, where the bridging portions are located between adjacent first electrodes; fabricating an isolation structure layer, first touch electrodes, and a plurality of body portions on the substrate, where on the substrate, orthogonal projections of the isolation structure layer cover orthogonal projections of the bridging portions, the isolation structure layer defines isolation openings, the isolation openings expose at least portions of the first electrodes, some of the isolation structure layer have through-holes, the first touch electrodes and the body portions are located in the through-holes and spaced apart from the isolation structure layer, adjacent body portions are electrically connected to the bridging portions, and on the substrate, the orthogonal projections of the bridging portions and the first touch electrodes intersect; and sequentially fabricating a light-emitting layer and a second electrode in the isolation openings to obtain a touch display panel.

[0034] Based on the fourth aspect, in some embodiments, the manufacturing method for a touch display panel further includes a step of manufacturing an organic sealing layer on a side of the second electrode facing away from the substrate, where the organic sealing layer fills the gap region between the isolation structure layer and the main body portion and the gap region between the isolation structure layer and the first touch electrode, and on the substrate, the orthogonal projection of the organic sealing layer covers the orthogonal projection of the second electrode, the orthogonal projection of the isolation structure layer, the orthogonal projection of the first touch electrode, and the orthogonal projection of the main body portion.

[0035] A fifth aspect of the present application provides a display device, the display device including a touch display panel according to any one of the above embodiments. [Effects of the Invention]

[0036] In the touch display panel, the manufacturing method of the touch display panel, and the display device according to the embodiments of the present application, the first touch electrode and the main body are disposed in the same layer as the first electrode, or the first touch electrode and the main body are disposed in an isolation structure layer, i.e., the first touch electrode and the second touch electrode are disposed inside the display panel, thereby realizing an in-cell touch mode, which saves four mask plates required for the touch screen, reduces costs, and reduces the thickness of the display module. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a schematic cross-sectional view of an on-cell touch display module according to the related art; [Figure 2] FIG. 1 is a schematic planar structural diagram of a mutual capacitance touch screen in the related art; [Figure 3] 1 is a partial planar structural schematic diagram of a touch display panel according to an embodiment of the present application; [Figure 4] FIG. 4 is a partially enlarged schematic view of FIG. 3. [Figure 5A] 5 is a schematic diagram 1 of a cross-sectional structure taken along line B1B2 in FIG. 4. [Figure 5B] FIG. 10 is a partial enlarged view of a touch display panel according to another embodiment of the present application. [Figure 5C] FIG. 5C is a schematic cross-sectional view taken along line D1D2 in FIG. 5B. [Figure 6] 5B is a schematic plan view of the conductive layer in which the first electrode is located in the cross-sectional structure shown in FIG. 5A. FIG. [Figure 7] FIG. 5 is a schematic diagram 2 of a cross-sectional structure taken along line B1B2 in FIG. [Figure 8] 5 is a cross-sectional structure schematic diagram 3 taken along line B1B2 in FIG. 4. [Figure 9] 9 is a schematic plan view of the conductive layer in which the first electrode is located in the cross-sectional structure shown in FIG. 8. FIG. [Figure 10] FIG. 5 is a schematic cross-sectional view of a fourth embodiment of the present application taken along line B1B2 in FIG. 4. [Figure 11]2 is a flowchart of a method for manufacturing a touch display panel according to a first embodiment of the present application. [Figure 12A] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12B] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12C] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12D] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12E] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12F] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 12G] 12 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 11. [Figure 13] 10 is a flowchart of a method for manufacturing a touch display panel according to a second embodiment of the present application. [Figure 14A] 14 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 13. [Figure 14B] 14 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 13. [Figure 14C] 14 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 13. [Figure 14D] 14 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 13. [Figure 14E] 14 is a schematic diagram of an intermediate product obtained in the process of carrying out the manufacturing method shown in FIG. 13. [Figure 15] 1 is a structural schematic diagram of a display device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0038] In the related art, one of the touch methods commonly implemented in displays is to provide a touch screen between the color filter and polarizer of the display, which is commonly referred to in the industry as an on-cell type.

[0039] 1 is a cross-sectional view of a related art on-cell touch display module, which includes a display panel 101, a filter 102, a touch screen 103, a polarizer 104, and a cover 105, which are stacked in order.

[0040] The touch screen 103 includes a self-capacitance touch screen and a mutual capacitance touch screen. Mutual capacitance touch screens have advantages such as true multi-dot display and fast speed, and are widely adopted. FIG. 2 is a planar structural schematic diagram of a mutual capacitance touch screen in the related art. As shown in FIG. 2, the touch screen 103 includes a first touch electrode 141 and a second touch electrode 142 arranged crosswise, and the first touch electrode 141 and the second touch electrode 142 are arranged to be insulated from each other at the crossing position.

[0041] Specifically, the cross-sectional line A1A2 in Figure 2 corresponds to the cross-sectional structure shown in Figure 1. As shown in Figures 1 and 2, the touch screen 103 includes a first metal layer M1, an insulating layer Ins, a second metal layer M2, and an insulating adhesive layer OC, which are sequentially stacked. At the intersection, the bridging portion of the second touch electrode 142 is located on the first metal layer M1, and the second touch electrode 142 and the first touch electrode 141, excluding the bridging portion, are entirely located on the second metal layer M2. The insulating layer Ins is used to insulate the first touch electrode 141 and the second touch electrode 142 at the intersection.

[0042] In the manufacturing process of the touch screen 103, the four layers of the touch screen 103, namely the first metal layer M1, the insulating layer Ins, the second metal layer M2, and the insulating adhesive layer OC, each require one patterning process, which means that four masks are required in the manufacturing process of the touch screen, which increases the cost. In addition, since the touch screen 103 is integrated, the thickness of the touch display module increases, which is disadvantageous to making the product thinner.

[0043] In view of this, the embodiments of the present application provide a touch display panel, a manufacturing method thereof, and a display device, in which the first touch electrode 131 and the second touch electrode 132 are disposed inside the display panel, and layers inside the display panel are used to act as the insulating layer Ins and the insulating adhesive layer OC, thereby realizing an in-cell touch mode, which saves four masks required for the touch screen, reduces costs, and reduces the thickness of the display module.

[0044] Hereinafter, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort will fall within the protection scope of the present application.

[0045] In addition, in order to better explain the present application, various specific details are shown in the following specific embodiments, but it should be understood by those skilled in the art that the present application can be practiced without some specific details. In some examples, methods and means well known to those skilled in the art are not described in detail in order to emphasize the gist of the present application.

[0046] In the following drawings, like reference numerals and letters refer to like elements. Therefore, once an element is defined in one drawing, it does not need to be further defined or interpreted in subsequent drawings. Furthermore, terms such as "first," "second," etc. are merely used for distinguishing and describing purposes and should not be understood to indicate or imply relative importance.

[0047] Fig. 3 is a partial planar structural schematic diagram of a touch display panel according to an embodiment of the present application. Fig. 4 is a partial enlarged schematic diagram of Fig. 3. Fig. 5A is a cross-sectional structural schematic diagram 1 taken along line B1B2 in Fig. 4. As shown in Figs. 3, 4 and 5A, the touch display panel includes a substrate 11, an isolation structure layer 12, a plurality of light-emitting elements 13 and a touch electrode 14.

[0048] Here, the substrate 11 may be a base substrate or an array substrate. The array substrate includes a base substrate and pixel circuits integrated on the base substrate. The base substrate may be a flexible substrate such as a polyimide film or ultra-thin glass, or a rigid substrate such as a glass substrate.

[0049] The isolation structure layer 12 is located on one side of the substrate 11, and defines a plurality of isolation openings. The isolation structure layer 12 is for isolating the plurality of light emitting elements 13 from one another.

[0050] For reference, related technical solutions of the isolation structure are described in patents PCT / CN2023 / 134518, 202310759370.2, 202310740412.8, 202310707209.0, and 202311346196.5, the contents of which are incorporated herein by reference.

[0051] The light-emitting element 13 is located within the isolation opening. The light-emitting element 13 includes a first electrode 131 adjacent to the substrate 11. Exemplarily, the first electrode 131 includes an anode. The light-emitting element 13 further includes a second electrode 133 separated from the substrate 11, and a light-emitting layer 132 located between the second electrode 133 and the first electrode 131. The second electrode 133 is located on the side of the first electrode 131 facing away from the substrate 11. That is, the first electrode 131, the light-emitting layer 132, and the second electrode 133 are sequentially stacked in the direction away from the substrate 11.

[0052] 3 merely exemplarily illustrates some of the light-emitting elements 13 in the touch display panel, and in an actual product, the light-emitting elements 13 are arranged over the entire area covered by the touch electrode 14.

[0053] On the substrate 11, the orthogonal projection of the touch electrode 14 is located in the gap region between the orthogonal projections of the plurality of light-emitting elements 13. Specifically, the touch electrode 14 includes a first touch electrode 141 and a second touch electrode 142. The second touch electrode 142 includes a plurality of body portions 1421 and bridging portions 1422 (illustratively indicated by the line segment ab in FIG. 4 ). The first touch electrode 141 extends along a second direction y parallel to the substrate 11, and the plurality of body portions 1421 are sequentially arranged along a first direction x parallel to the substrate 11. The first direction x and the second direction y intersect, for example, the first direction x is perpendicular to the second direction y. The body portions 1421 and the bridging portions 1422 are disposed on different layers. Adjacent body portions 1421 along the first direction contact the bridging portions 1422 through via holes. On the substrate 11, the orthogonal projection of the connecting portion 1422 and the orthogonal projection of the first touch electrode 141 intersect.

[0054] Specifically, as shown in FIG. 4, the orthogonal projection of the touch electrodes 14 (including the first touch electrode 141 and the second touch electrode 142) on the substrate 11 is in a lattice shape. The shapes of the lattice holes may be the same or different. Each lattice hole surrounds the orthogonal projection of at least one light-emitting element 13 on the substrate 11. The number of light-emitting elements 13 surrounded by different lattice holes may be equal or unequal.

[0055] When each lattice hole surrounds the orthogonal projection of multiple light-emitting elements 13 on the substrate 11, as shown in Figure 5A, on the substrate 11, the orthogonal projection of some of the isolation structure layers 12 covers the orthogonal projection of the touch electrode 14, and the orthogonal projection of the remaining isolation structure layers 12 does not cover the orthogonal projection of the touch electrode 14.

[0056] Fig. 5B is a partial enlarged view of a touch display panel according to another embodiment of the present application, and Fig. 5C is a schematic cross-sectional view taken along line D1D2 in Fig. 5B. As shown in Fig. 5B and Fig. 5C, when each lattice hole surrounds the orthogonal projection of one light-emitting element 13 on the substrate 11, the orthogonal projection of the isolation structure layer 12 on the substrate 11 at any position covers the orthogonal projection of the touch electrode 14 on the substrate 11.

[0057] In one embodiment, as shown in Figures 3 and 4, each lattice hole in the touch electrode 14 surrounds the orthogonal projections of multiple light-emitting elements 13 on the substrate 11, and multiple light-emitting elements 13 surrounded by the same lattice hole constitute one pixel array repeat unit. The pixel array repeat unit refers to the smallest repeat unit in the pixel array layout. The pixel referred to here is homogeneous with the light-emitting elements 13, i.e., the light-emitting elements 13 may also be referred to as pixels. For example, as shown in Figure 5A, the pixel array repeat unit includes a red light-emitting element R, a green light-emitting element G, and a blue light-emitting element B.

[0058] The bridging portion 1422 includes at least one conductive wire, which extends along the first direction x. If the bridging portion 1422 includes multiple conductive wires, the multiple conductive wires are sequentially arranged along the second direction y. Configuring the bridging portion 1422 with multiple conductive wires is more reliable than configuring it with a single conductive wire.

[0059] 6 is a schematic plan view of the conductive layer where the first electrode is located in the cross-sectional structure shown in FIG. 5A. As shown in FIGS. 5A and 6, in this embodiment, the first touch electrode 141 and the main body 1421 are disposed in the same layer as the first electrode 131. The bridging portion 1422 is disposed in the same layer as the isolation structure layer 12.

[0060] Specifically, the first touch electrode 141 and the main body 1421 both have a lattice structure, and each lattice hole surrounds at least one first electrode 131.

[0061] The isolation structure layer 12 includes a first surface S1 facing the substrate 11 and a second surface S2 facing away from the substrate 11, and the orthogonal projection of the first surface S1 is located within the range of the orthogonal projection of the second surface S2 on the substrate 11. For example, the cross-sectional shape of the isolation structure layer 12 may be an inverted trapezoid or a U-shape.

[0062] The isolation structure layer 12 includes a laminated conductive portion 121 and a flange portion 122, with the conductive portion 121 located on the side of the flange portion 122 closest to the substrate 11. The light-emitting element 13 further includes a second electrode 133 spaced from the substrate 11, with the second electrode 133 overlapping and bonded to the conductive portion 121. The light-emitting element 13 further includes a light-emitting layer 132 located between the first electrode 131 and the second electrode 133. Exemplarily, the conductive portion 121 may be designed as an independent layer, i.e., there is no physical interface within the conductive portion 121, and each portion is made of the same material. Alternatively, the conductive portion 121 may be designed to be configured by laminating at least two layers. For example, the conductive portion 121 may be formed by laminating two conductive layers. The two conductive layers may be made of molybdenum and aluminum, respectively, with the conductive layer made of molybdenum being located between the substrate 11 and the conductive layer made of aluminum. On the substrate 11, the orthogonal projection of the collar portion 122 covers the orthogonal projection of the conductive portion 121. The material of the collar portion 122 may be an organic material, an inorganic material, or a metallic material. When the collar portion 122 is made of a metallic material, the material of the collar portion 122 may be titanium.

[0063] Some of the isolation structure layers 12 include at least one through hole M, for example, a strip-shaped through hole. The bridging portion 1422 is located in the through hole M and is spaced apart from the isolation structure layers 12. In one embodiment, to avoid short-circuiting between the bridging portion 1422 and the conductive portion 121, the touch display panel further includes an insulating portion (not shown) filled in the gap between the isolation structure layers 12 and the bridging portion 1422.

[0064] In one embodiment, the touch display panel further includes a pixel defining layer 17 located on the side of the isolation structure layer 121 facing the substrate 11, and the orthogonal projection of the isolation structure layer 121 on the substrate 11 is located within the orthogonal projection of the pixel defining layer 17. The pixel defining layer 17 defines a pixel opening, and the light-emitting element is also located in the pixel opening. The bridge portion 1422 contacts the body portion 1421 through a via hole T penetrating the pixel defining layer 17.

[0065] According to the touch display panel of this embodiment, the main body 1421 of the first touch electrode 141 and the second touch electrode 142 are disposed in the same layer as the first electrode 131 of the light emitting element 13, and the bridging portion 1422 is disposed in the isolation structure layer 12, thereby realizing an in-cell touch mode. In this case, there is no need to manufacture a separate touch screen, which saves four masks required for the touch screen, reducing costs and reducing the thickness of the touch display module.

[0066] In one embodiment, as shown in FIG. 5A, the touch display panel further includes a plurality of inorganic sealing units 151, each of which corresponds to one of the isolation openings, and the orthogonal projection of the inorganic sealing units 151 on the substrate 11 covers the orthogonal projection of the isolation opening.

[0067] In one embodiment, the touch display panel further includes an organic encapsulation layer and an inorganic encapsulation layer (not shown) sequentially stacked on the side of the inorganic encapsulation unit 151 facing away from the substrate 11. The organic encapsulation layer covers the orthogonal projection of the inorganic encapsulation unit 151 on the substrate 11, filling the gap between the bridge portion 1422 and the isolation structure layer 12. The orthogonal projection of the inorganic encapsulation layer covers the orthogonal projection of the organic encapsulation layer on the substrate 11. In this way, a thin film encapsulation structure in which inorganic film layers and organic film layers are alternately arranged is formed, resulting in excellent encapsulation effect.

[0068] Fig. 7 is a schematic diagram 2 of a cross-sectional structure taken along line B1B2 in Fig. 4. As shown in Fig. 7, the touch display panel according to this embodiment differs from the touch display panel shown in Fig. 5A in that the positions of the bridge portions 1422 are different.

[0069] 7, in this embodiment, the substrate 11 includes at least one conductive layer, and the bridging portion 1422 is located in one of the conductive layers. Exemplarily, the at least one conductive layer includes a proximal conductive layer 16 that is closest to the isolation structure layer 12, and the bridging portion 1422 is located in the proximal conductive layer 16. When the bridging portion 1422 is located in the proximal conductive layer 16, the distance between the proximal conductive layer 16 and the bridging portion 1422 is shorter than when the bridging portion 1422 is located in another conductive layer in the substrate 11, making it easier to achieve electrical connection.

[0070] Although other conductive structures in the proximal conductive layer 16 are not shown, the proximal conductive layer 16 is illustratively located on the side of the main body portion away from the isolation structure layer. The proximal conductive layer may further include a data signal line, a scanning signal line, an initialization signal line, a power signal line, etc. Furthermore, the bridging portion 1422 may be disposed in a conductive layer other than the proximal conductive layer 16 and may be located in the same conductive layer as at least one of the data signal line, the scanning signal line, the initialization signal line, and the power signal line.

[0071] Figure 8 is a schematic diagram 3 of the cross-sectional structure taken along line B1B2 in Figure 4. Figure 9 is a schematic planar structure diagram of the conductive layer in which the first electrode is located in the cross-sectional structure shown in Figure 8. The touch display panel shown in Figures 8 and 9 differs from the touch display panel shown in Figures 5A and 6 in that, in this embodiment, the first touch electrode 141 and the main body 1421 are arranged in the same layer as the isolation structure layer 12, and the bridging portion 1422 is arranged in the same layer as the first electrode 131, as shown in Figures 3, 8 and 9.

[0072] Specifically, the bridging portion 1422 is located between adjacent first electrodes 131. Exemplarily, the bridging portion 1422 includes at least one conductive wire, and one conductive wire is installed between adjacent first electrodes 131. The conductive wire extends along the first direction x. When the bridging portion 1422 includes multiple conductive wires, the multiple conductive wires are sequentially arranged along the second direction y.

[0073] The isolation structure layer 12 includes a conductive portion 121 and an insulating portion, and some of the isolation structure layers 12 have multiple lattice-shaped grooves that penetrate at least some of the conductive portions 121 along the thickness direction, and the insulating portion is located between the conductive portion 121 and the first touch electrode 141, and between the conductive portion 121 and the main body portion 1421.

[0074] Specifically, the isolation structure layer 12 includes a first surface S1 facing the substrate 11 and a second surface S2 facing away from the substrate 11, and the orthogonal projection of the first surface S1 on the substrate 11 is located within the range of the orthogonal projection of the second surface S2.

[0075] The isolation structure layer 12 includes a laminated conductive portion 121 and a flange portion 122, with the flange portion 122 located on the side of the conductive portion 121 facing away from the substrate 11. The light-emitting element 13 further includes a second electrode 133 spaced from the substrate 11, with the second electrode 133 overlapping and bonded to the conductive portion 121. Exemplarily, the conductive portion 121 can be designed as an independent layer, i.e., the conductive portion 121 has no internal physical interface and each portion is made of the same material. Alternatively, the conductive portion 121 can be designed to be configured by laminating at least two layers. For example, the conductive portion 121 is formed by laminating two conductive layers. The two conductive layers may be made of molybdenum and aluminum, respectively, with the conductive layer made of molybdenum being located between the substrate 11 and the conductive layer made of aluminum. On the substrate 11, the orthogonal projection of the flange portion 122 covers the orthogonal projection of the conductive portion 121. The material of the collar 122 may be an organic material, an inorganic material, or a metallic material. If the collar 122 is made of a metallic material, the material of the collar 122 may be titanium.

[0076] Some of the isolation structure layers 12 have through holes M, for example, the through holes M are lattice-shaped through holes. The first touch electrodes 141 and the body parts 1421 are located in the through holes M and spaced apart from the isolation structure layers 12. In one embodiment, the touch display panel further includes insulating parts (not shown) filling the gaps between the isolation structure layers 12 and the first touch electrodes 141 and the gaps between the isolation structure layers 12 and the body parts 1421.

[0077] In one embodiment, the touch display panel further includes a pixel defining layer 17 located on the side of the isolation structure layer 12 facing the substrate 11, and the orthogonal projection of the isolation structure layer 12 on the substrate 11 is located within the orthogonal projection of the pixel defining layer 17. The pixel defining layer 17 defines a pixel opening, and the light-emitting element 13 is also located within the pixel opening. The body portion 1421 contacts the bridge portion 1422 through a via hole T penetrating the pixel defining layer 17.

[0078] According to the touch display panel of this embodiment, the first touch electrode 141 and the body portion 1421 of the second touch electrode 142 are disposed within the isolation structure layer 12, and the bridging portion 1422 of the second touch electrode 142 is disposed in the same layer as the first electrode 131 of the light emitting element 13, thereby realizing an in-cell touch mode. In this case, there is no need to manufacture a separate touch screen, which saves four masks required for the touch screen, reducing costs and reducing the thickness of the touch display module.

[0079] Fig. 10 is a schematic cross-sectional view of a fourth embodiment of the present invention taken along line B1B2 in Fig. 4. As shown in Fig. 10, the touch display panel differs from the touch display panels shown in Figs. 8 and 9 in that the positions of the bridge portions 1422 are different.

[0080] 10 , in this embodiment, the substrate 11 includes at least one conductive layer, and the bridging portion 1422 is located in one of the conductive layers. Illustratively, the at least one conductive layer includes a proximal conductive layer 16 that is closest to the isolation structure layer 12, and the bridging portion 1422 is located in the proximal conductive layer 16. The bridging portion 1422 located in the proximal conductive layer 16 makes it easier to achieve electrical connection because the distance between the proximal conductive layer 16 and the bridging portion 1422 is shorter than when the bridging portion 1422 is located in another conductive layer in the substrate 11.

[0081] Although other conductive structures in the adjacent conductive layer 16 are not shown, for example, the adjacent conductive layer may further include a data signal line, a scanning signal line, an initialization signal line, a power signal line, etc. Furthermore, the bridging portion 1422 may be disposed in a conductive layer other than the adjacent conductive layer 16 and may be located in the same conductive layer as at least one of the data signal line, the scanning signal line, the initialization signal line, and the power signal line.

[0082] The embodiments of the present application further provide a method for manufacturing a touch display panel. Figure 11 is a flowchart of the method for manufacturing a touch display panel according to a first embodiment of the present application. Figures 12A to 12G are schematic diagrams of intermediate products obtained during the process of performing the manufacturing method shown in Figure 11. As shown in Figure 11, the method for manufacturing a touch display panel includes the following steps:

[0083] In step S1110, a plurality of first electrodes, a plurality of first touch electrodes, and a plurality of body portions are fabricated on a substrate in the same process, and each of the first touch electrodes and the body portions is located between adjacent first electrodes.

[0084] Specifically, a conductive material layer is deposited on the substrate 11 shown in FIG. 12A by a vacuum deposition process, and a single patterning process is performed on the conductive material layer to obtain a plurality of first electrodes 131, a first touch electrode 141 and a plurality of main body portions 1421 as shown in FIG. 12B.

[0085] For example, the first touch electrode 141 extends along the second direction y, and the plurality of bodies 1421 are sequentially arranged along the first direction x. The first touch electrode 141 and the plurality of bodies 1421 both have a lattice structure, and each lattice hole surrounds at least one first electrode 131.

[0086] The substrate 11 may be a base substrate or an array substrate. The array substrate includes a base substrate and a pixel circuit integrated on the base substrate. The base substrate may be a flexible substrate such as a polyimide film or ultra-thin glass, or a rigid substrate such as a glass substrate.

[0087] 12C, 12D, and 12E, where FIG. 12D is a partially enlarged view of FIG. 12C, and FIG. 12E is a schematic cross-sectional view taken along line C1C2 in FIG. 12D. In step S1120, an isolation structure layer and a bridge portion are simultaneously fabricated on a substrate, where the orthogonal projection of the isolation structure layer on the substrate covers the orthogonal projection of the first touch electrode and the orthogonal projection of each of the plurality of body portions, and the isolation structure layer defines an isolation opening, which exposes at least a portion of the first electrode. Some of the isolation structure layers have through-holes, and the first touch electrode and the body portion are located in the through-holes and spaced apart from the isolation structure layer. Adjacent body portions are electrically connected to the bridge portion, and the orthogonal projection of the bridge portion on the substrate intersects with the orthogonal projection of the first touch electrode on the substrate.

[0088] 12D , a through hole M is formed between points a and b. The bridge portion 1422 is located in the through hole M and is spaced apart from the isolation structure layer 12. Both ends of the bridge portion 1422 are electrically connected to the adjacent body portion 1421, and the orthogonal projection of the bridge portion 1422 and the orthogonal projection of the first touch electrode 141 on the substrate 11 intersect.

[0089] Specifically, at least one isolation material layer is fabricated on the substrate 11, and the at least one isolation material layer is patterned to obtain the isolation structure layer 12 and the bridging portion 1422. Illustratively, the at least one isolation material layer includes a stacked conductive material layer and an insulating material layer, and the insulating material layer includes an organic material layer or an inorganic material layer.

[0090] In one embodiment, before step S1120, the method further includes fabricating a pixel defining layer 17 on the substrate 11 and etching a via hole T in the pixel defining layer 17. The pixel defining layer 17 covers the first touch electrode 141 and the body portion 1421, and the pixel defining layer 17 defines a pixel opening, which exposes at least a portion of the first electrode 131. The via hole T exposes the body portion 1421. For example, the via hole T is opened in the pixel defining layer 17 at points a and b.

[0091] The isolation structure layer 12 includes a laminated conductive portion 121 and a flange portion 122, with the flange portion 122 located on the side of the conductive portion 121 facing away from the substrate 11. The light-emitting element 13 further includes a second electrode 133 spaced from the substrate 11, with the second electrode 133 overlapping and bonded to the conductive portion 121. Exemplarily, the conductive portion 121 is designed as an independent layer, i.e., the conductive portion 121 has no internal physical interface and each portion is made of the same material. Alternatively, the conductive portion 121 may be designed to be configured by laminating at least two layers. For example, the conductive portion 121 is formed by laminating two conductive layers. The two conductive layers may be made of molybdenum and aluminum, respectively, with the conductive layer made of molybdenum being located between the substrate 11 and the conductive layer made of aluminum. On the substrate 11, the orthogonal projection of the flange portion 122 covers the orthogonal projection of the conductive portion 121. The material of the collar 122 may be an organic material, an inorganic material, or a metallic material. If the collar 122 is made of a metallic material, the material of the collar 122 may be titanium.

[0092] Referring to FIG. 12F, in step S1130, the light emitting layer 132 and the second electrode 133 are sequentially fabricated in the isolation openings to obtain a touch display panel.

[0093] Further, the method may further include step S1140. In step S1140, an organic encapsulation layer is formed on the side of the second electrode away from the substrate, the organic encapsulation layer fills the gap region between the isolation structure layer and the bridging portion, and the orthogonal projection of the organic encapsulation layer on the substrate covers the orthogonal projection of the second electrode, the isolation structure layer, and the bridging portion on the substrate.

[0094] 12G, after step S1130, the method further includes fabricating a thin film encapsulation structure. The thin film encapsulation structure includes an inorganic encapsulation unit 151, an organic encapsulation layer 152, and an inorganic encapsulation layer 153, which are sequentially stacked. The inorganic encapsulation units 151 correspond one-to-one to the isolation openings, and the orthogonal projections of the inorganic encapsulation units 151 on the substrate 11 cover the orthogonal projections of the isolation openings. The orthogonal projections of the organic encapsulation layer 152 on the substrate 11 cover the orthogonal projections of all of the inorganic encapsulation units 151 on the substrate 11, and fill the gaps between the bridge portions 1422 and the isolation structure layer 12. The orthogonal projections of the inorganic encapsulation layer 153 on the substrate 11 cover the orthogonal projections of the organic encapsulation layer 152.

[0095] It should be noted that the thin film encapsulation structure provided here is merely an example, and the number and stacking relationship of the organic encapsulation layers and inorganic encapsulation layers in the thin film encapsulation structure can be reasonably adjusted according to actual needs.

[0096] According to the manufacturing method of the touch display panel of this embodiment, the main body 1421 of the first touch electrode 141 and the second touch electrode 142 are disposed in the same layer as the first electrode 131 of the light emitting element 13, and the bridging portion 1422 is disposed in the isolation structure layer 12, thereby realizing an in-cell touch mode. In this case, there is no need to manufacture a separate touch screen, which saves four masks required for the touch screen, reducing costs, and also reducing the thickness of the touch display module.

[0097] Fig. 13 is a flowchart of a method for manufacturing a touch display panel according to a second embodiment of the present application. Figs. 14A to 14E are schematic diagrams of intermediate products obtained in the process of performing the manufacturing method shown in Fig. 13. As shown in Fig. 13, the method for manufacturing a touch display panel includes the following steps:

[0098] In step S1310, a plurality of first electrodes and bridge portions are fabricated on a substrate in the same process, with the bridge portions being positioned between adjacent first electrodes.

[0099] Specifically, a vacuum deposition process is performed to deposit a conductive material layer on the substrate 11 shown in FIG. 12A, and a single patterning process is performed on the conductive material layer to obtain a plurality of first electrodes 131 and bridging portions 1422 as shown in FIG. 14A.

[0100] Exemplarily, the bridge portion 1422 includes at least one conductive wire, which is located between adjacent first electrodes 131. The conductive wire extends along a first direction x parallel to the substrate 11. When the bridge portion 1422 includes multiple conductive wires, the multiple conductive wires are sequentially arranged along a second direction y parallel to the substrate 11, and the second direction y intersects with the first direction x, for example, the second direction y is perpendicular to the first direction x. The conductive wires and the first electrodes 131 are arranged alternately in the second direction y.

[0101] The substrate 11 may be a base substrate or an array substrate. The array substrate includes a base substrate and a pixel circuit integrated on the base substrate. The base substrate may be a flexible substrate such as a polyimide film or ultra-thin glass, or a rigid substrate such as a glass substrate.

[0102] 14B and 14C, where FIG. 14B is a partially enlarged view of FIG. 14A, and FIG. 14C is a schematic cross-sectional view taken along line C1C2 in FIG. 14B. In step S1320, an isolation structure layer, a first touch electrode, and a plurality of body portions are simultaneously fabricated on a substrate 11, where the orthogonal projection of the isolation structure layer on the substrate covers the orthogonal projection of the bridge portion, and the isolation structure layer defines an isolation opening, which exposes at least a portion of the first electrode. Some of the isolation structure layers have through-holes, and the first touch electrode and the body portion are located in the through-holes and spaced apart from the isolation structure layer. Adjacent body portions are electrically connected to the bridge portion, and the orthogonal projection of the bridge portion on the substrate intersects with the orthogonal projection of the first touch electrode.

[0103] For example, the isolation structure layer 12 has through holes M, for example, lattice-shaped through holes, and the first touch electrodes 141 and the bodies 1421 are located in the through holes M and spaced apart from the isolation structure layer 12. Adjacent bodies 1421 are electrically connected to bridge portions 1422, and the orthogonal projections of the bridge portions 1422 on the substrate 11 intersect with the orthogonal projections of the first touch electrodes 141.

[0104] Specifically, at least one isolation material layer is fabricated on the substrate 11, and the at least one isolation material layer is patterned to obtain the isolation structure layer 12, the first touch electrode 141, and the plurality of body portions 1421. Illustratively, the at least one isolation material layer includes a stacked conductive material layer and an insulating material layer, and the insulating material layer includes an organic material layer or an inorganic material layer.

[0105] For example, the plurality of through holes M include first through holes and second through holes other than the first through holes. The first through holes extend along a first direction x parallel to the substrate 11, and the second through holes are sequentially arranged along a second direction y parallel to the substrate 11, with the second direction y intersecting the first direction x. To prevent the first through holes and the second through holes from communicating with each other in the second direction y, the first through holes are provided in the gaps between adjacent second through holes. That is, the first through holes separate adjacent second through holes in the second direction y.

[0106] In one embodiment, before step S1320, the method further includes a step of fabricating a pixel definition layer 17 on the substrate 11 and etching a via hole T in the pixel definition layer 17. The pixel definition layer 17 covers the bridging portion 1422, and the pixel definition layer 17 defines a pixel opening, which exposes at least a portion of the first electrode 131. The via hole T exposes the bridging portion 1422. For example, a via hole T is opened in the pixel definition layer 17 at points a and b.

[0107] The isolation structure layer 12 includes a laminated conductive portion 121 and a flange portion 122, with the flange portion 122 located on the side of the conductive portion 121 facing away from the substrate 11. The light-emitting element 13 further includes a second electrode 133 spaced from the substrate 11, with the second electrode 133 overlapping and bonded to the conductive portion 121. Exemplarily, the conductive portion 121 may be designed as an independent layer, i.e., the conductive portion 121 has no internal physical interface and each portion is made of the same material. Alternatively, the conductive portion 121 may be designed to be configured by laminating at least two layers. For example, the conductive portion 121 is formed by laminating two conductive layers. The two conductive layers may be made of molybdenum and aluminum, respectively, with the conductive layer made of molybdenum located between the substrate 11 and the conductive layer made of aluminum. On the substrate 11, the orthogonal projection of the flange portion 122 covers the orthogonal projection of the conductive portion 121. The material of the collar 122 may be an organic material, an inorganic material, or a metallic material. If the collar 122 is made of a metallic material, the material of the collar 122 may be titanium.

[0108] Referring to FIG. 14D, in step S1330, a light emitting layer and a second electrode are sequentially fabricated in the isolation openings to obtain a touch display panel.

[0109] The method may further include step S1340. In step S1340, an organic encapsulation layer is formed on a side of the second electrode away from the substrate, the organic encapsulation layer filling the gap region between the isolation structure layer and the body and the gap region between the isolation structure layer and the first touch electrode, and the orthogonal projection of the organic encapsulation layer on the substrate covers the orthogonal projections of the second electrode, the isolation structure layer, the first touch electrode, and the body on the substrate.

[0110] 14E, after step S1330, the method further includes fabricating a thin film encapsulation structure. The thin film encapsulation structure includes an inorganic encapsulation unit 151, an organic encapsulation layer 152, and an inorganic encapsulation layer 153, which are sequentially stacked. The inorganic encapsulation units 151 correspond one-to-one to the isolation openings, and the orthogonal projections of the inorganic encapsulation units 151 on the substrate 11 cover the orthogonal projections of the isolation openings. The orthogonal projections of the organic encapsulation layer 152 on the substrate 11 cover the orthogonal projections of all of the inorganic encapsulation units 151 on the substrate 11, filling the gaps between the bridge portions 1422 and the isolation structure layer 12. The orthogonal projections of the inorganic encapsulation layer 153 on the substrate 11 cover the orthogonal projections of the organic encapsulation layer 152.

[0111] It should be noted that the thin film encapsulation structure provided here is merely an example, and the number and stacking relationship of the organic encapsulation layers and inorganic encapsulation layers in the thin film encapsulation structure can be reasonably adjusted according to actual needs.

[0112] According to the manufacturing method of the touch display panel of this embodiment, the main body 1421 of the first touch electrode 141 and the second touch electrode 142 are disposed in the same layer as the first electrode 131 of the light emitting element 13, and the bridging portion 1422 is disposed in the isolation structure layer 12, thereby realizing an in-cell touch mode. In this case, there is no need to manufacture a separate touch screen, which saves four masks required for the touch screen, reducing costs, and also reducing the thickness of the touch display module.

[0113] The present application further provides a display device. Figure 15 is a structural schematic diagram of a display device according to an embodiment of the present application. As shown in Figure 15, the display device includes a touch display panel 1500 according to any of the above-mentioned embodiments. The display device is a product with an image display function.

[0114] For example, the display device may be used to display static images, such as pictures or photographs. The display device may be used to display dynamic images, such as videos. The display device may be a laptop, a mobile phone, a handheld or portable computer, a camera, a video camera, an in-vehicle smart center console, a calculator, a smart watch, a GPS navigator, an electronic photo, an electronic sign or guide board, a projector, etc.

[0115] The display device may also have functions such as photography, recording, fingerprint recognition, and face recognition, etc. Accordingly, the display device further includes at least one functional module for realizing the above functions, such as an under-screen camera, an under-screen fingerprint identification sensor, etc.

[0116] Although the basic principles of the present application have been described above in connection with specific embodiments, the advantages, merits, effects, etc. mentioned in the present application are merely examples and are not limiting. These advantages, merits, effects, etc. should not be considered to be necessarily possessed by each embodiment of the present application. Furthermore, the specific details of the above disclosure are merely for illustration and understanding and are not limiting. The above details do not necessarily limit the present application to be implemented using the above specific details.

[0117] While the foregoing description has been provided for purposes of illustration and description, it is not intended to limit the embodiments of the present application to the form disclosed herein. Having discussed several exemplary aspects and embodiments above, those skilled in the art may contemplate several variations, modifications, variations, additions, and subcombinations thereof.

Claims

1. A touch display panel, a substrate, an isolation structure layer, a plurality of light-emitting elements, and a touch electrode; the isolation structure layer is located on one side of the substrate and defines a plurality of isolation openings; the light emitting element includes a first electrode located in the isolation opening and proximate to the substrate; the touch electrode includes a first touch electrode and a second touch electrode, the second touch electrode includes a plurality of body portions and a bridge portion, the bridge portion and the body portion are provided in different layers, the bridge portion connects the adjacent body portions by a via hole, and an orthogonal projection of the bridge portion and an orthogonal projection of the first touch electrode intersect on the substrate; The first touch electrode and the main body are provided in the same layer as the first electrode or the isolation structure layer. A touch display panel characterized by:

2. The touch electrode is orthogonally projected on the substrate in a lattice shape, and each lattice hole surrounds the orthogonal projection on the substrate of at least one of the light-emitting elements. The touch display panel according to claim 1 .

3. Each lattice hole surrounds a plurality of the light-emitting elements in orthogonal projection on the substrate, and the plurality of light-emitting elements surrounded by the same lattice hole constitutes one pixel array repeat unit. The touch display panel according to claim 2 .

4. the bridge portion includes at least one conductive wire; The plurality of main bodies are sequentially arranged along a first direction parallel to the substrate, and the conductive wires extend along the first direction. The touch display panel according to claim 1 .

5. the at least one conductive wire includes a plurality of conductive wires, the plurality of conductive wires being sequentially arranged along a second direction parallel to the substrate, the first direction and the second direction intersecting; The touch display panel according to claim 4 .

6. the first touch electrode extends along a second direction parallel to the substrate, and the first direction and the second direction intersect; The touch display panel according to claim 4 .

7. the first touch electrode and the main body are provided in the same layer as the first electrode, and the bridge portion is provided in the same layer as the isolation structure layer; The first touch electrode and the main body both have a lattice structure, and each lattice hole surrounds at least one of the first electrodes; The touch display panel according to claim 1 .

8. a part of the isolation structure layers has at least one strip-shaped through hole, and the bridge portion is located in the strip-shaped through hole and is spaced apart from the isolation structure layer; The touch display panel according to claim 7 .

9. a pixel definition layer located on a side of the isolation structure layer facing the substrate; an orthogonal projection of the isolation structure layer on the substrate is located within a range of an orthogonal projection of the pixel definition layer, the pixel definition layer defines a pixel opening, the light-emitting element is also located within the pixel opening, and the bridge portion contacts the body portion through a via hole penetrating the pixel definition layer; The touch display panel according to claim 8 .

10. the first touch electrode and the main body are provided in the same layer as the isolation structure layer, and the bridge portion is provided in the same layer as the first electrode; The touch display panel according to claim 1 .

11. a part of the isolation structure layer has a plurality of lattice-shaped through-holes, and the first touch electrode and the body are located in the lattice-shaped through-holes and spaced apart from the isolation structure layer; The touch display panel according to claim 10 .

12. a pixel definition layer located on a side of the isolation structure layer facing the substrate; an orthogonal projection of the isolation structure layer on the substrate is located within a range of an orthogonal projection of the pixel definition layer, the pixel definition layer defines a pixel opening, the light-emitting element is also located within the pixel opening, and the body portion contacts the bridge portion through a via hole penetrating the pixel definition layer; The touch display panel according to claim 11 .

13. the bridge portion is located between adjacent first electrodes; The touch display panel according to claim 10 .

14. the substrate includes at least one conductive layer, and the bridge portion is located within any one of the conductive layers; The touch display panel according to claim 1 .

15. the isolation structure layer includes a first surface facing the substrate and a second surface facing away from the substrate, and an orthogonal projection of the first surface is located within a range of an orthogonal projection of the second surface on the substrate; The touch display panel according to claim 1 .

16. the bridging portion and the isolation structure layer are provided in the same layer, a part of the isolation structure layer has at least one strip-shaped through hole, and the bridging portion is located in the strip-shaped through hole and is provided spaced apart from the isolation structure layer; The touch display panel according to claim 15 .

17. the first touch electrode and the main body are provided in the same layer as the isolation structure layer, a portion of the isolation structure layer includes a plurality of lattice-shaped through holes, and the first touch electrode and the main body are located in the lattice-shaped through holes and spaced apart from the isolation structure layer; The touch display panel according to claim 15 .

18. A method for manufacturing a touch display panel, comprising: a step of manufacturing a plurality of first electrodes, a first touch electrode, and a plurality of main bodies on a substrate in the same process, wherein the first touch electrodes and the main bodies are each located between adjacent first electrodes; fabricating an isolation structure layer and a bridging portion on the substrate, wherein an orthogonal projection of the isolation structure layer on the substrate covers an orthogonal projection of the first touch electrode and an orthogonal projection of each of the plurality of body portions, the isolation structure layer defines an isolation opening, the isolation opening exposes at least a portion of the first electrode, a portion of the isolation structure layer has a through hole, the bridging portion is located in the through hole and is spaced apart from the isolation structure layer, both ends of the bridging portion are electrically connected to adjacent body portions, and the orthogonal projection of the bridging portion and the orthogonal projection of the first touch electrode on the substrate intersect; and sequentially fabricating a light-emitting layer and a second electrode in the isolation opening to obtain the touch display panel.

10. A method for manufacturing a touch display panel comprising:

19. A method for manufacturing a touch display panel, comprising: a step of manufacturing a plurality of first electrodes and bridge portions on a substrate in the same process, the bridge portions being located between adjacent first electrodes; fabricating an isolation structure layer, a first touch electrode, and a plurality of body portions on the substrate, wherein an orthogonal projection of the isolation structure layer on the substrate covers an orthogonal projection of the bridging portion, the isolation structure layer defines an isolation opening, the isolation opening exposes at least a portion of the first electrode, a portion of the isolation structure layer has a through hole, the first touch electrode and the body portion are located in the through hole and spaced apart from the isolation structure layer, adjacent body portions are respectively electrically connected to the bridging portion, and the orthogonal projection of the bridging portion and the orthogonal projection of the first touch electrode on the substrate intersect; and sequentially fabricating a light-emitting layer and a second electrode in the isolation opening to obtain the touch display panel. A method for manufacturing a touch display panel.

20. A display device comprising the touch display panel according to any one of claims 1 to 17.

Images