Touch display panel, preparation method of touch display panel and display equipment

Abstract

The invention provides a touch display panel, a preparation method of the touch display panel and display equipment, the touch display panel comprises a substrate, a light-emitting layer and an isolation structure, the light-emitting layer is located on one side of the substrate and comprises a plurality of light-emitting structures; the isolation structure is arranged on one side of the substrate, a plurality of isolation openings and a plurality of containing openings are defined, and light-emitting structures are arranged in the isolation openings; touch control electrode blocks are arranged in the accommodating openings, the multiple touch control electrode blocks are sequentially connected to form touch control electrodes used for receiving touch control signals, and the adjacent touch control electrodes are arranged at intervals; the adjacent light-emitting structures are isolated through the isolation structures, and the touch electrode blocks and the adjacent isolation structures are insulated and arranged on the same layer. Thus, the touch electrode blocks and the isolation structures are arranged on the same layer, the touch electrode blocks and the isolation structures are insulated, it can be ensured that touch and display work independently and do not affect each other, and the thickness of the touch display panel can be reduced.

Description

Technical Field

[0001] This application relates to the field of display technologies, and more particularly, to a touch display panel, a method for manufacturing the touch display panel, and a display device. Background Art

[0002] With the development of touch technologies and display technologies, touch display panels have become increasingly popular. Taking common touch-enabled intelligent mobile terminals as an example, their ever-increasing screen-to-body ratio design provides users with a more extreme visual experience than before.

[0003] Meanwhile, the thinning of touch display panels has also attracted increasing attention. Summary of the Invention

[0004] In view of this, this application is committed to providing a touch display panel, a method for manufacturing the touch display panel, and a display device, which can effectively reduce the thickness of the film layer.

[0005] In a first aspect, this application provides a touch display panel, including:

[0006] A substrate;

[0007] A light-emitting layer disposed on one side of the substrate, the light-emitting layer including a plurality of light-emitting structures;

[0008] An isolation structure disposed on one side of the substrate, the isolation structure enclosing to form a plurality of isolation openings and a plurality of accommodation openings, a light-emitting structure being disposed in the isolation openings; a touch electrode block being disposed in the accommodation openings; a plurality of the touch electrode blocks being sequentially connected to form a touch electrode for receiving a touch signal, adjacent touch electrodes being spaced apart;

[0009] Adjacent light-emitting structures are isolated by the isolation structure, and the touch electrode block is insulated from and disposed in the same layer as the adjacent isolation structure.

[0010] Optionally, it further includes a touch circuit layer;

[0011] The touch circuit layer is disposed on a side of the touch electrode block close to the substrate, and includes a plurality of spaced conductive parts, the conductive parts corresponding to the touch electrodes one by one, and a plurality of touch electrode blocks in the touch electrode being electrically connected through the corresponding conductive parts.

[0012] Optionally, the conductive part includes a first touch trace extending in a first direction and a second touch trace extending in a second direction, the first direction intersecting the second direction;

[0013] The touch electrode block is electrically connected to the first touch trace or the second touch trace through a via; the first touch trace and the second touch trace intersect to form a mesh structure.

[0014] Optionally, three adjacent ones of the light-emitting structures form a pixel unit, and the orthographic projection of the mesh holes of the mesh structure on the substrate surrounds the orthographic projection of the corresponding pixel unit on the substrate;

[0015] The touch electrode block is disposed between adjacent pixel units;

[0016] Preferably, one touch electrode block is disposed between two adjacent pixel units;

[0017] Preferably, one touch electrode block is disposed between four adjacent pixel units.

[0018] Optionally, the accommodation openings are arranged at intervals in an array on the substrate;

[0019] Optionally, the light-emitting structures are arranged in an array on the substrate, and the pixel unit includes light-emitting structures of a first color, a second color, and a third color; the orthographic projection of the pixel unit on the substrate is disposed within the orthographic projection of at least one mesh hole of the mesh structure on the substrate;

[0020] Optionally, the first color is red; the second color is green; the third color is blue;

[0021] Optionally, the touch electrode block is located between two adjacent light-emitting structures of the same light-emitting color;

[0022] Optionally, the accommodation opening is located between two adjacent isolation openings.

[0023] Optionally, the touch display panel further includes a touch control module; the touch control module is electrically connected to the plurality of touch electrodes and is configured to provide a touch signal to the touch electrodes.

[0024] Optionally, the light-emitting structure includes a first electrode, a light-emitting functional layer, and a second electrode that are sequentially stacked on the substrate;

[0025] The first electrode and the conductive portion are disposed in the same layer, and there is a gap between the orthographic projection of the first electrode on the substrate and the orthographic projection of the conductive portion on the substrate;

[0026] Optionally, the first electrode and the conductive portion are made of the same material.

[0027] Optionally, an insulating layer is further included on one side of the substrate;

[0028] A plurality of pixel openings are provided on the insulating layer. The pixel openings expose partial regions of the first electrode. The pixel openings communicate with the isolation openings correspondingly, and the light-emitting functional layer of the light-emitting structure is located within the pixel openings.

[0029] Optionally, the isolation structure is located on a side of the insulating layer away from the substrate; alternatively, a touch opening is further provided on the insulating layer. The touch openings correspond to the accommodation openings one by one, and the touch electrode blocks are located within the touch openings of the insulating layer.

[0030] The insulating layer has a plurality of first through holes; the plurality of touch electrode blocks are respectively in contact with the conductive portion through corresponding first through holes.

[0031] Optionally, the insulating layer includes a pixel definition layer.

[0032] Optionally, a first planarization layer and a second planarization layer are further included.

[0033] The first planarization layer, the conductive portion, and the second planarization layer are sequentially stacked on the substrate.

[0034] The second planarization layer is located on a side of the touch electrode layer close to the substrate.

[0035] Optionally, the light-emitting structure includes a first electrode, a light-emitting functional layer, and a second electrode that are sequentially stacked on the substrate.

[0036] The touch display panel further includes an insulating layer.

[0037] The insulating layer is located on a side of the second planarization layer away from the substrate.

[0038] A plurality of pixel openings are provided on the insulating layer. The pixel openings expose partial regions of the first electrode. The pixel openings communicate with the isolation openings, and the light-emitting functional layer of the light-emitting structure is located within the pixel openings.

[0039] Optionally, the isolation structure is located on a side of the insulating layer away from the substrate; alternatively, a touch opening is further provided on the insulating layer. The touch electrode blocks are located within the touch openings of the insulating layer.

[0040] The insulating layer has a plurality of first through holes; the second planarization layer has a plurality of second through holes; the first through holes and the second through holes communicate with each other; the plurality of touch electrode blocks are in contact with the conductive portion through the corresponding first through holes and second through holes.

[0041] Optionally, the insulating layer includes a pixel definition layer.

[0042] Optionally, a first encapsulation layer is further included.

[0043] The first encapsulation layer includes a plurality of encapsulation portions arranged at intervals;

[0044] The encapsulation portions are located on a side of the second electrode facing away from the substrate; a positive projection of the encapsulation portions on the substrate covers a positive projection of the second electrode on the substrate;

[0045] Optionally, the touch display panel further includes a second encapsulation layer;

[0046] The second encapsulation layer is located on a side of the first encapsulation layer facing away from the substrate; a positive projection of the second encapsulation layer on the substrate covers the substrate;

[0047] Optionally, the touch display panel further includes a third encapsulation layer;

[0048] The third encapsulation layer is located on a side of the second encapsulation layer facing away from the substrate; a positive projection of the third encapsulation layer on the substrate covers the substrate.

[0049] In a second aspect, the present application provides a touch display panel, including:

[0050] A substrate;

[0051] An isolation structure, disposed on one side of the substrate, enclosing to form a plurality of isolation openings and a plurality of accommodation openings; a light-emitting functional layer of a light-emitting structure is disposed in the isolation openings;

[0052] A plurality of touch electrodes arranged at intervals, the touch electrodes including a plurality of electrically connected touch electrode blocks; the touch electrode blocks are located in the accommodation openings and have a gap with the isolation structure.

[0053] Optionally, it further includes a touch circuit layer;

[0054] The touch circuit layer is on a side of the touch electrode blocks close to the substrate, and includes a plurality of spaced conductive portions; the conductive portions correspond to the touch electrodes one by one; a plurality of touch electrode blocks in the touch electrodes are electrically connected through the corresponding conductive portions.

[0055] Optionally, the conductive portion includes a first touch trace extending in a first direction and a second touch trace extending in a second direction, and the first direction intersects with the second direction;

[0056] The touch electrode blocks are electrically connected to the first touch trace or the second touch trace through vias; the first touch trace and the second touch trace intersect to form a mesh structure.

[0057] Optionally, three adjacent ones of the light-emitting structures form a pixel unit, and the orthographic projection of the mesh holes of the mesh structure on the substrate surrounds the orthographic projection of the corresponding pixel unit on the substrate;

[0058] The touch electrode block is disposed between adjacent pixel units;

[0059] Preferably, one touch electrode block is disposed between two adjacent pixel units;

[0060] Preferably, one touch electrode block is disposed between four adjacent pixel units.

[0061] Optionally, it further includes a touch control module; the touch control module is electrically connected to the plurality of touch electrodes and is configured to provide a touch signal to the touch electrodes.

[0062] Optionally, the touch electrode block is made of a metal material;

[0063] Optionally, the material of the touch electrode block is one or a combination of copper, silver, gold, molybdenum, aluminum, and titanium.

[0064] In a third aspect, the present application further provides a method for manufacturing a touch display panel, including:

[0065] Providing a substrate;

[0066] Forming an isolation structure, a light-emitting layer, and a plurality of touch electrode blocks on the substrate; the isolation structure encloses a plurality of isolation openings and a plurality of accommodation openings; the light-emitting layer includes a plurality of light-emitting structures; the light-emitting structures are located in the isolation openings; adjacent light-emitting structures are isolated by the isolation structure; the touch electrode blocks are located in the accommodation openings; several touch electrode blocks are sequentially electrically connected to form a touch electrode for receiving a touch signal; adjacent touch electrodes are spaced apart; the touch electrode blocks are insulated from and disposed in the same layer as the adjacent isolation structure.

[0067] In a fourth aspect, the present application further provides a display device, including the touch display panel as described in the first aspect or the second aspect of the present application.

[0068] In the solution of the present application, the touch display panel includes a substrate, a light-emitting layer, and an isolation structure. Among them, the light-emitting layer is located on one side of the substrate and includes a plurality of light-emitting structures; the isolation structure is arranged on one side of the substrate and encloses a plurality of isolation openings and a plurality of accommodation openings. A light-emitting structure is arranged in the isolation opening; a touch electrode block is arranged in the accommodation opening, and a plurality of touch electrode blocks are sequentially connected to form a touch electrode for connecting a touch signal. Adjacent touch electrodes are arranged at intervals; adjacent light-emitting structures are isolated by the isolation structure, and the touch electrode block is insulated from the adjacent isolation structure and is arranged on the same layer. In this way, the touch electrode block and the isolation structure are arranged on the same layer, and the touch electrode block and the isolation structure are insulated from each other, which can not only ensure that touch and display work independently of each other without affecting each other, but also reduce the thickness of the touch display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other objects, features, and advantages of the present application will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0070] Figure 1 is a schematic plan view of a touch display panel provided by an embodiment of the present application;

[0071] Figure 2 is as Figure 1 shown in the schematic cross-sectional view of the touch display panel along the cutting line AA';

[0072] Figure 3 is a schematic diagram of the structure of a touch display panel provided by another embodiment of the present application;

[0073] Figure 4 is a schematic diagram of the structure of the conductive part of a touch display panel provided by another embodiment of the present application;

[0074] Figure 5 is a schematic plan view of a touch display panel provided by another embodiment of the present application;

[0075] Figure 6 is a schematic diagram of the structure of a touch display panel provided by another embodiment of the present application;

[0076] Figure 7 is a schematic diagram of the structure of a touch display panel provided by another embodiment of the present application;

[0077] Figure 8 is a schematic diagram of the structure of a touch display panel provided by another embodiment of the present application;

[0078] Figure 9 It is a schematic structural diagram of a touch display panel provided by another embodiment of the present application;

[0079] Figure 10 It is a schematic plan view of a touch display panel provided by another embodiment of the present application;

[0080] Figure 11 It is a schematic flow chart of a preparation method of a touch display panel provided by an embodiment of the present application;

[0081] Figure 12 It is a schematic structural diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0082] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification should have the ordinary meanings understood by those of ordinary skill in the art to which this specification belongs. The "first", "second" and similar terms used in the embodiments of this specification do not denote any order, quantity or importance, but are only used to avoid confusion of components.

[0083] Unless otherwise required by the context, throughout this specification, "a plurality of" means "at least two", and "including" is interpreted as open and inclusive, that is, "including, but not limited to". In the description of this specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples", etc., are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of this specification. The above-mentioned schematic representations do not necessarily refer to the same embodiment or example.

[0084] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0085] With the rapid development of display technology, touch display panels have broad application spaces in fields such as vehicles, mobile phones, tablets, computers, and televisions. The touch function has become one of the standard configurations of most display panels, and among them, capacitive touch display panels are widely used.

[0086] Capacitive touch displays mainly include capacitive touch displays and self-capacitive touch displays. Among them, self-capacitive touch display is a touch technology based on the principle of capacitance induction, which uses the conduction of current on the surface of the touch display panel to detect the touch position. Self-capacitive touch displays are usually suitable for single-point touch or a small number of synchronous touches.

[0087] Currently, the commonly used touch scheme for organic light-emitting diode (OLED) display panels is in-cell, but the manufacturing cost and stack thickness of in-cell touch display panels still need to be reduced.

[0088] To this end, the present application provides a solution that can effectively reduce the stack thickness of the touch display panel. By setting an isolation structure to enclose a plurality of isolation openings and a plurality of accommodation openings, a light-emitting structure of a light-emitting layer is arranged by using the isolation openings, adjacent light-emitting structures are arranged in isolation by the isolation structure, a touch electrode block is arranged by using the accommodation openings, and a plurality of touch electrode blocks are sequentially connected to form a touch electrode for receiving a touch signal. Adjacent touch electrodes are arranged at intervals. By setting the touch electrode block and the isolation structure to be on the same layer and insulated, it can not only ensure that touch and display work independently of each other without interference, but also reduce the thickness of the touch display panel.

[0089] Specifically, as an optional implementation of the disclosed content of the present application, an embodiment of the present application provides a display panel. Figure 1 It is a schematic structural diagram of a touch display panel provided by an embodiment of the present application. Figure 2 As shown in Figure 1 is a schematic cross-sectional structure diagram of the touch display panel along the cutting line AA′, as shown in Figure 1 and Figure 2 shown, the touch display panel may at least include: a substrate 10, an isolation structure 11, and a light-emitting layer 13.

[0090] The substrate 10 mainly plays roles such as support and bearing. Specifically, the substrate 10 may be a rigid substrate such as a glass substrate or a silicon substrate, or a flexible substrate such as stainless use steel (abbreviated as SUS) or flexible polyimide (abbreviated as PI). That is to say, the touch display panel in the embodiment of the present application may be an inflexible rigid display panel or a bendable flexible display panel.

[0091] The light-emitting layer 13 is disposed on one side of the substrate 10 and may include a plurality of light-emitting structures 13A.

[0092] As shown in Figure 2 shown, the isolation structure 11 is located on one side of the substrate 10 and encloses a plurality of isolation openings K1 and a plurality of accommodation openings K2.

[0093] Among them, a light-emitting structure 13A is disposed within the isolation opening K1. Adjacent light-emitting structures 13A are disposed in isolation by an isolation structure 11. In this way, each light-emitting structure 13A can be partitioned by the isolation structure 11 to obtain individual light-emitting pixels. The international application with the application number PCT / CN2023 / 134518 and the Chinese patent applications with the application numbers 202310759370.2, 202310740412.8, 202310707209.0, and 202311346196.5 describe the related technologies of the isolation structure, the content of which is incorporated herein by reference for reference.

[0094] A touch control electrode block 121 is disposed in the accommodation opening K2. As Figure 3 shown, a plurality of touch control electrode blocks 121 are electrically connected in sequence to form a touch control electrode 12 for receiving touch signals. The adjacent touch control electrodes 12 are spaced apart from each other, thereby forming a self-capacitance touch control structure, laying a structural foundation for implementing the self-capacitance touch control function of the touch display panel.

[0095] The touch control electrode block 121 is insulated from and disposed on the same layer as the adjacent isolation structure 11. Specifically, there is a gap between the touch control electrode block 121 and the adjacent isolation structure 11. In this way, it is possible to prevent the increase in the stack thickness of the touch display panel due to the addition of the touch control electrode. At the same time, setting a gap between the touch control electrode block 121 and the isolation structure 11 can achieve an independent touch control structure. By disposing the light-emitting structure 13A in the isolation opening K1 different from the accommodation opening K2, it is possible to achieve independent touch control work and display work of the touch control electrode 12 and the light-emitting structure 13A, while ensuring the display effect and the touch control effect, and reducing the stack thickness of the touch display panel.

[0096] In addition, since the touch control electrode block 121 is disposed on the same layer as the isolation structure 11, the touch control electrode block 121 can be formed while the isolation structure 11 is formed, thereby saving the number of mask plates and reducing the manufacturing cost.

[0097] It should be noted that in the touch control electrode, the number and arrangement shape of the touch control electrode blocks can be set according to actual requirements.

[0098] In some embodiments, in order to achieve the electrical connection between the plurality of touch control electrode blocks 121 in the touch control electrode 12, the touch display panel may further include a touch control circuit layer.

[0099] The touch control circuit layer is disposed on the side of the touch control electrode block 121 close to the substrate 10, and includes a plurality of spaced conductive portions 14. The conductive portions 14 correspond to the touch control electrodes 12 one by one, and the plurality of touch control electrode blocks 121 in the touch control electrode 12 are electrically connected through the corresponding conductive portions 14.

[0100] Among them, the material of the conductive part 14 can be any material with conductive function, such as aluminum, titanium, etc.

[0101] Specifically, as Figure 4 shown, the conductive part 14 may include a first touch trace 141 extending along the first direction X and a second touch trace 142 extending along the second direction Y, and the first direction intersects the second direction.

[0102] During implementation, the touch electrode block 121 is electrically connected to the first touch trace 141 or the second touch trace 142 through a via hole; the first touch trace 141 and the second touch trace 142 intersect to form a mesh structure. The area corresponding to the touch electrode block 121 can be used as a touch point, and the area enclosed by all the touch electrode blocks 121 corresponding to the mesh structure connection can be used as a touch area, laying a touch structure foundation for realizing self-capacitive touch display.

[0103] Among them, the number of the first touch traces and the number of the second touch traces in the conductive part 14 can both be set according to actual needs and are not limited here. For example, Figure 4 as shown, the conductive part 14 includes 5 first touch traces 141 extending along the first direction X and 5 second touch traces 142 extending along the second direction Y, then the 5 first touch traces 141 and the 5 second touch traces 142 intersect to form a mesh structure, and this mesh structure has 16 independent minimum mesh holes E.

[0104] The conductive part 14 with a mesh structure can electrically connect multiple touch electrode blocks in the touch electrode 12 with a smaller volume, reducing the occupation of the wiring space. Moreover, the conductive part 14 with a mesh structure is arranged in the touch circuit layer, which can reduce the interference of other traces on the reception of touch signals in the conductive part 14 and improve the touch effect.

[0105] During implementation, the first touch trace 141 and the second touch trace 142 can be arranged on the same layer or on different layers. When the first touch trace 141 and the second touch trace 142 are arranged on different layers, they can be connected through via holes.

[0106] In some embodiments, as Figure 5 shown, three adjacent light-emitting structures (13A1, 13A2, and 13A3) can form a pixel unit unit. The orthographic projection of the mesh hole of the mesh structure on the substrate 10 encloses the orthographic projection of the corresponding pixel unit unit on the substrate 10. The touch electrode block 121 is arranged between adjacent pixel units unit. With such an arrangement, it will neither affect the light-emitting effect of the touch display panel nor can the touch electrode block 121 arranged between adjacent pixel units unit be used as a touch point to realize the touch function.

[0107] Preferably, in order to further improve the touch effect, a touch electrode block 121 can be arranged between two adjacent pixel units unit, so as to ensure that the touch electrode block 121 has a sufficient touch density and improve the touch sensitivity.

[0108] Similarly, a touch electrode block 121 can also be arranged between four adjacent pixel units unit. While ensuring that the touch electrode block 121 meets the touch requirements, it can avoid affecting the pixel density, ensuring that the touch display panel has a good touch effect while achieving a good display effect.

[0109] Of course, the present application is not limited to this. In some other embodiments, a touch electrode block 121 can also be arranged between other adjacent numbers of pixel units, such as between 3 adjacent pixel units, between 5 adjacent pixel units, etc. Here, it can be set according to actual needs and is not specifically limited.

[0110] In addition, in order to further improve the touch effect of the touch display panel, as Figure 1 shown, a plurality of accommodation openings K2 formed by enclosing the isolation structure 11 can be arranged at intervals in an array on the substrate 10.

[0111] Since the touch electrode block 121 is arranged in the accommodation opening K2, a plurality of accommodation openings K2 arranged at intervals in an array on the substrate 10, that is, a plurality of touch electrode blocks 121 arranged at intervals in an array on the substrate 10, can make the arrangement of the touch electrodes 12 in the touch electrode layer 12 more uniform, avoiding touch failure or poor touch effect caused by the relatively sparse distribution of the touch electrodes 12 in some touch display areas.

[0112] Preferably, the accommodation opening K2 can be located between two adjacent isolation openings K1.

[0113] The isolation opening K1 is used to arrange the light-emitting functional layer 131 of the light-emitting structure 13A, and the accommodation opening K2 is used to arrange the touch electrode block. The accommodation opening K2 is located between two adjacent isolation openings K1, that is, the touch electrode block 121 is located between the light-emitting functional layers 131 of two adjacent light-emitting structures 13A, which can provide a relatively dense touch electrode distribution for the touch display panel, ensuring touch operation at all positions in the display area, thereby providing a structural basis for further improving the touch effect of the touch display panel.

[0114] In some embodiments, the light-emitting structures 13A can be arranged in an array on the substrate 10, still as Figure 5As shown, the pixel unit unit may include a light-emitting structure 13A3 of a first color, a light-emitting structure 13A1 of a second color, and a light-emitting structure 13A2 of a third color. The orthographic projection of the pixel unit unit on the substrate 10 is disposed within the orthographic projection of at least one mesh hole of the mesh structure on the substrate 10. For example, it may be set that the orthographic projection of the pixel unit unit on the substrate 10 is disposed within the orthographic projection of each mesh hole of the mesh structure on the substrate 10. With such a setting, the touch electrodes can cover the light-emitting area of the touch display panel, and while realizing the display function, the touch sensitivity of the touch function is improved.

[0115] Among them, the first color may be red, the second color may be green, and the third color may be blue. Each pixel unit unit includes a red light-emitting structure 13A3 (R), a green light-emitting structure 13A1 (G), and a blue light-emitting structure 13A2 (B), thereby improving the display effect of the touch display panel.

[0116] The touch electrode block 121 may be located between two adjacent light-emitting structures 13A of the same light-emitting color.

[0117] Preferably, the touch electrode block 121 may be located between two adjacent blue light-emitting structures 13A2.

[0118] Furthermore, the accommodation opening K2 may be located between two adjacent isolation openings K1. Thus, between two light-emitting structures 13A in two adjacent isolation openings K1, there is a touch electrode block 121 located in the accommodation opening K2, increasing the arrangement density of the touch electrode blocks 121 on the touch display panel and enhancing the touch effect of the touch display panel.

[0119] In some embodiments, as Figure 3 shown, the touch display panel may further include a touch control module 18. The touch control module 18 is electrically connected to a plurality of touch electrodes 12 and is used to provide a touch signal to the touch electrodes 12 to achieve self-capacitive touch sensing.

[0120] In some embodiments, as Figure 6 shown, the light-emitting structure 13A may include a first electrode 132, a light-emitting functional layer 131, and a second electrode 133 that are sequentially stacked on the substrate 10.

[0121] The first electrode 132 may be located on the side of the light-emitting functional layer 131 close to the substrate 10, and the second electrode 133 may be located on the side of the light-emitting functional layer 131 away from the substrate 10. The second electrode 133 may be located within the isolation opening K1.

[0122] The light-emitting functional layer 131 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer that are sequentially stacked on a side of the first electrode 132 facing away from the substrate 10. A second electrode 133 is disposed on a side of the electron injection layer facing away from the substrate 10.

[0123] Among them, the light-emitting functional layer 131 may include a material having electroluminescence (EL) performance (hereinafter referred to as a light-emitting material). The first electrode 132 may also be referred to as an anode and is used to provide holes to the light-emitting functional layer 131. The second electrode 133 may also be referred to as a cathode and is used to provide electrons to the light-emitting functional layer 131. The holes provided by the first electrode 132 and the electrons provided by the second electrode 133 can excite the light-emitting material of the light-emitting functional layer 131 to emit light after recombination in the light-emitting functional layer 131. The hole injection layer and the hole transport layer may be made of a material with a high hole mobility, so that the holes generated by the first electrode 132 can be better transported to the light-emitting functional layer 131. Similarly, the electron injection layer and the electron transport layer may be made of a material with a high electron mobility, so that the electrons generated by the second electrode 133 can be better transported to the light-emitting functional layer 131.

[0124] During implementation, the conductive portion 14 may be provided on the same layer as the first electrode 132, and there is a gap between the orthographic projection of the first electrode 132 on the substrate 10 and the orthographic projection of the conductive portion 14 on the substrate. In this way, an increase in the stack thickness of the touch display panel caused by adding the conductive portion 14 can be avoided.

[0125] In practical applications, the conductive portion 14 and the first electrode 132 may be made of the same material. In this way, the conductive portion 14 and the first electrode 132 can be prepared on the same layer using only one mask, without the need to additionally increase the mask, achieving the effect of saving the number of masks and reducing the manufacturing cost.

[0126] In some embodiments, as Figure 7 shown, the touch display panel may further include an insulating layer 15 on one side of the substrate 10. A plurality of pixel openings R are provided on the insulating layer 15. The pixel openings R expose a partial area of the first electrode 132. The pixel openings R communicate with the isolation openings K1 correspondingly. The light-emitting functional layer 131 of the light-emitting structure 13A may be located within the pixel openings R.

[0127] During implementation, the isolation structure 11 is located on a side of the insulating layer 15 facing away from the substrate 10; or, touch openings are further provided on the insulating layer 15, and the touch openings correspond to the accommodation openings K2 one by one. The touch electrode blocks 121 are located within the touch openings of the insulating layer 15.

[0128] The insulating property of the insulating layer 15 can insulate the first electrode 132 from the isolation structure 11. Moreover, since the area of the region where the first electrode 132 of the light-emitting structure 13A is exposed by the pixel opening R is the light-emitting area of the light-emitting structure 13A, the light-emitting area can be better defined through the pixel opening R of the insulating layer 15.

[0129] To achieve the electrical connection between the conductive part 14 and the multiple touch electrode blocks 121, as Figure 7 shown, the insulating layer 15 has multiple first through-holes T1; the multiple touch electrode blocks 121 are respectively in contact with the conductive part 14 through the corresponding first through-holes T1.

[0130] In application, the insulating layer 15 may include a pixel definition layer.

[0131] In some embodiments, as Figure 8 shown, the touch display panel may also include a first planarization layer 16 and a second planarization layer 17.

[0132] Among them, the first planarization layer 16, the conductive part 14, and the second planarization layer 17 are sequentially stacked on the substrate 10; the second planarization layer 17 is located on the side of the touch electrode layer 12 close to the substrate 10. Setting the conductive part 14 between the first planarization layer 16 and the second planarization layer 17 can not only isolate the influence of the conductive part 14 on the work unrelated to touch, but also avoid the increase in the stacked thickness of the touch display panel due to the addition of the conductive part 14.

[0133] In application, the material of the first planarization layer 16 may be the same as that of the second planarization layer 17. Specifically, the materials of the first planarization layer 16 and the second planarization layer 17 may be inorganic materials such as silicon dioxide or silicon nitride. Of course, this application is not limited thereto. In some other embodiments, the materials of the first planarization layer 16 and the second planarization layer 17 may also be organic materials such as PI, which will not be elaborated here.

[0134] In some embodiments, the touch display panel may further include a third planarization layer located between the first planarization layer 16 and the second planarization layer 17. The conductive part 14 may include a first touch trace 141 extending along the first direction X and a second touch trace 142 extending along the second direction Y. The first direction X intersects with the second direction Y, and the first touch trace 141 and the second touch trace 142 intersect to form a mesh structure.

[0135] Among them, the first touch trace 141 may be located between the first planarization layer 16 and the third planarization layer, the second touch trace 142 may be located between the third planarization layer and the second planarization layer 17, and the first touch trace 141 and the second touch trace 142 are electrically connected through the vias in the third planarization layer.

[0136] In some embodiments, such as Figure 8 shown, the light-emitting structure 13A may include a first electrode 132, a light-emitting functional layer 131, and a second electrode 133 that are sequentially stacked on the substrate 10.

[0137] The first electrode 132 may be located on the side of the light-emitting functional layer 131 close to the substrate 10, and the second electrode 133 may be located on the side of the light-emitting functional layer 131 facing away from the substrate 10. The second electrode 133 may be located within the isolation opening K1.

[0138] The touch display panel may further include an insulating layer 15; the insulating layer 15 is located on the side of the second planarization layer 17 facing away from the substrate 10; a plurality of pixel openings R are provided on the insulating layer 15, and the pixel openings R expose a partial area of the first electrode 132. The pixel openings R communicate with the isolation opening K1, and the light-emitting functional layer 131 of the light-emitting structure 13A is located within the pixel openings R.

[0139] During implementation, the isolation structure 11 may be located on the side of the insulating layer 15 facing away from the substrate 10; alternatively, a touch opening is further provided on the insulating layer 15, and the touch electrode block 121 is located within the touch opening of the insulating layer 15.

[0140] To achieve electrical connection between the conductive portion 14 and the plurality of touch electrode blocks 121, as Figure 8 shown, the insulating layer 15 may be provided with a plurality of first through holes T1; the second planarization layer 17 has a plurality of second through holes T2; the first through holes T1 and the second through holes T2 communicate; the plurality of touch electrode blocks 121 are in contact with the conductive portion 14 through the corresponding first through holes T1 and second through holes T2.

[0141] In practical applications, the insulating layer 15 may include a pixel definition layer.

[0142] In some embodiments, such as Figure 9 shown, the touch display panel may further include a first encapsulation layer 19; the first encapsulation layer 19 may include a plurality of spaced-apart encapsulation portions. The encapsulation portions are located on the side of the second electrode 132 facing away from the substrate 10; the orthographic projection of the encapsulation portions on the substrate 10 covers the orthographic projection of the second electrode 132 on the substrate 10. Thus, the light-emitting structure 13A can be protected by the encapsulation portions to avoid damage to the light-emitting structure 13A.

[0143] During application, the first encapsulation layer 19 may be formed by chemical vapor deposition (CVD). The material of the first encapsulation layer 19 may be an inorganic material.

[0144] Of course, the present application is not limited thereto. In some other implementation manners, the material of the first encapsulation layer may also be an organic material. Specifically, it can be set according to actual encapsulation requirements and technical needs.

[0145] In some embodiments, still as Figure 9 shown, the touch display panel may further include a second encapsulation layer 20; the second encapsulation layer 20 is located on a side of the first encapsulation layer 19 away from the substrate 10; a positive projection of the second encapsulation layer 20 on the substrate 10 covers the substrate 10.

[0146] The positive projection of the second encapsulation layer 20 on the substrate 10 covers the substrate 10, realizing the encapsulation of the touch electrode layer 12 and the further encapsulation of the light-emitting structure 13A.

[0147] Moreover, by using the second encapsulation layer 20 to simultaneously encapsulate the touch electrode layer 12 and further encapsulate the light-emitting structure 13A, mask plate sharing can be realized, so that an additional mask plate is not required for the encapsulation of the touch electrode layer 12, reducing the manufacturing cost.

[0148] Specifically, the material of the second encapsulation layer 20 can be selected from organic materials or inorganic materials. During implementation, the second encapsulation layer 20 can be formed by an inkjet printing method.

[0149] In some embodiments, as Figure 9 shown, the touch display panel may further include a third encapsulation layer 21; the third encapsulation layer 21 is located on a side of the second encapsulation layer 20 away from the substrate 10; a positive projection of the third encapsulation layer 21 on the substrate 10 covers the substrate 10.

[0150] During application, the first encapsulation layer 19 and the third encapsulation layer 21 can be prepared using inorganic materials, and the second encapsulation layer 20 can be prepared using organic materials. The second encapsulation layer 20 prepared using an organic material is located between the first encapsulation layer 19 and the third encapsulation layer 21 prepared using inorganic materials, and can form an encapsulation structure, which can better isolate water and oxygen and improve the encapsulation effect.

[0151] As another alternative implementation of the disclosure of the present application, embodiments of the present application further provide a touch display panel, as Figure 10 shown, the touch display panel may include: a substrate 10, an isolation structure 11, and a plurality of touch electrodes 12 arranged at intervals.

[0152] The substrate 10 mainly plays roles such as supporting and carrying. Specifically, the substrate 10 can be a rigid substrate such as a glass substrate or a silicon substrate, or can be a flexible substrate such as stainless steel (abbreviated as SUS) or flexible polyimide (abbreviated as PI). That is to say, the touch display panel in the embodiments of the present application can be an inflexible rigid display panel or a bendable flexible display panel.

[0153] The isolation structure 11 is located on one side of the substrate 10, enclosing a plurality of isolation openings K1 and a plurality of accommodation openings K2.

[0154] Among them, the isolation openings K1 can be used to arrange the light-emitting functional layers 131 of a plurality of light-emitting structures 13A. By setting like this, the light-emitting functional layers 131 of each light-emitting structure 13A can be partitioned by the isolation structure 11, so as to obtain independent light-emitting pixels.

[0155] The touch electrode 12 can include a plurality of touch electrode blocks 121 that are electrically connected to each other. Among them, the touch electrode blocks 121 are located in the accommodation openings K2 and have a gap with the isolation structure 11.

[0156] Arranging the touch electrode blocks 121 in the accommodation openings K2, that is, arranging the touch electrode blocks 121 on the same layer as the isolation structure 11, can avoid the increase in the stacked thickness of the touch display panel due to the addition of the touch function. At the same time, setting a gap between the touch electrode blocks 121 and the isolation structure 11 can avoid the connection between the touch electrode blocks 121 and the isolation structure, so as to realize an independent touch structure. Arranging the light-emitting functional layers 131 of the light-emitting structures 13A in the isolation openings K1 can realize independent touch work and display work. In this way, while ensuring the display effect and touch effect, the stacked thickness of the touch display panel is reduced.

[0157] In addition, the touch electrode blocks 121 are located in the accommodation openings K2, that is, the touch electrode blocks 121 are arranged on the same layer as the isolation structure 11, which can form the touch electrode layer 12 while forming the isolation structure 11, thus saving the number of mask plates and reducing the manufacturing cost.

[0158] It should be noted that in the touch electrode, the number and arrangement shape of the touch electrode parts can be set according to actual needs.

[0159] During application, the touch electrode blocks 121 can be prepared from a metal material.

[0160] Specifically, the material of the touch electrode blocks 121 can be one of copper, silver, gold, molybdenum, aluminum, and titanium, or a combination of multiple of copper, silver, gold, molybdenum, aluminum, and titanium.

[0161] In some embodiments, in order to realize the electrical connection between a plurality of touch electrode blocks 121 in the touch electrode 12, the touch display panel can further include a touch circuit layer.

[0162] The touch circuit layer is arranged on the side of the touch electrode blocks 121 close to the substrate 10 and includes a plurality of spaced conductive parts 14. The conductive parts 14 correspond to the touch electrodes 12 one by one, and a plurality of touch electrode blocks 121 in the touch electrode 12 are electrically connected through the corresponding conductive parts 14.

[0163] Among them, the material of the conductive part 14 can be any material with conductive function, such as aluminum, titanium, etc.

[0164] Specifically, the conductive part 14 may include a first touch trace 141 extending along the first direction X and a second touch trace 142 extending along the second direction Y, and the first direction intersects the second direction.

[0165] During implementation, the touch electrode block 121 is electrically connected to the first touch trace 141 or the second touch trace 142 through a via hole; the first touch trace 141 and the second touch trace 142 intersect to form a mesh structure. The area corresponding to the touch electrode block 121 can be used as a touch point, and the area enclosed by all the touch electrode blocks 121 corresponding to the connection of the mesh structure can be used as a touch area, laying a touch structure foundation for realizing self-capacitive touch display.

[0166] Among them, the number of the first touch traces and the number of the second touch traces in the conductive part 14 can both be set according to actual needs, and are not limited herein.

[0167] The conductive part 14 with a mesh structure can realize the electrical connection of multiple touch electrode blocks in the touch electrode 12 with a smaller volume, reducing the occupation of the wiring space. Moreover, the conductive part 14 with a mesh structure is arranged in the touch circuit layer, which can reduce the interference of other traces on the reception of touch signals in the conductive part 14 and improve the touch effect.

[0168] During implementation, the first touch trace 141 and the second touch trace 142 can be arranged on the same layer or on different layers. When the first touch trace 141 and the second touch trace 142 are arranged on different layers, they can be connected through via holes.

[0169] In some embodiments, three adjacent light-emitting structures can form a pixel unit unit. The orthographic projection of the mesh holes of the mesh structure on the substrate 10 is surrounded outside the orthographic projection of the corresponding pixel unit unit on the substrate 10. The touch electrode block 121 is arranged between adjacent pixel units unit. With such an arrangement, it will neither affect the light-emitting effect of the touch display panel nor can the touch electrode block 121 arranged between adjacent pixel units unit be used as a touch point to realize the touch function.

[0170] Preferably, in order to further improve the touch effect, a touch electrode block 121 can be arranged between two adjacent pixel units unit, so as to ensure that the touch electrode block 121 has a sufficient touch density and improve the touch sensitivity.

[0171] Similarly, a touch electrode block 121 can also be arranged between four adjacent pixel units unit. While ensuring that the touch electrode block 121 meets the touch requirements, it avoids affecting the pixel density, ensuring that the touch display panel has good touch effects while achieving good display effects.

[0172] Of course, the present application is not limited to this. In some other embodiments, a touch electrode block 121 can also be arranged between other adjacent numbers of pixel units, such as between 3 adjacent pixel units, between 5 adjacent pixel units, etc. Here, it can be set according to actual needs and is not specifically limited.

[0173] In addition, in order to further improve the touch effect of the touch display panel, as Figure 10 shown, the multiple accommodation openings K2 formed by enclosing the isolation structure 11 can be arranged at intervals in an array on the substrate 10.

[0174] Since the touch electrode block 121 is arranged in the accommodation opening K2, the multiple accommodation openings K2 are arranged at intervals in an array on the substrate 10, that is, the multiple touch electrode blocks 121 are arranged at intervals in an array on the substrate 10, which can make the arrangement of the touch electrodes 12 in the touch electrode layer 12 more uniform, avoiding touch failure or poor touch effects caused by relatively sparse distribution of the touch electrodes 12 in some touch display areas.

[0175] Preferably, the accommodation opening K2 can be located between two adjacent isolation openings K1.

[0176] The isolation opening K1 is used to arrange the light-emitting functional layer 131 of the light-emitting structure 13A, and the accommodation opening K2 is used to arrange the touch electrode block. The accommodation opening K2 is located between two adjacent isolation openings K1, that is, the touch electrode block 121 is located between the light-emitting functional layers 131 of two adjacent light-emitting structures 13A, which can provide a relatively dense touch electrode distribution for the touch display panel, ensuring touch operations at all positions in the display area, thereby providing a structural basis for further improving the touch effect of the touch display panel.

[0177] In some embodiments, the light-emitting structures 13A can be arranged in an array on the substrate 10. Still as Figure 5 shown, the pixel unit unit can include a light-emitting structure 13A3 of a first color, a light-emitting structure 13A1 of a second color, and a light-emitting structure 13A2 of a third color. The orthographic projection of the pixel unit unit on the substrate 10 is arranged within the orthographic projection of at least one mesh hole of the mesh structure on the substrate 10. For example, it can be set that the orthographic projection of the pixel unit unit on the substrate 10 is arranged within the orthographic projection of each mesh hole of the mesh structure on the substrate 10. With such an arrangement, the touch electrodes can cover the light-emitting areas of the touch display panel, improving the touch sensitivity of the touch function while realizing the display function.

[0178] Among them, the first color may be red, the second color may be green, and the third color may be blue. Each pixel unit unit includes a red light-emitting structure 13A3(R), a green light-emitting structure 13A1(G), and a blue light-emitting structure 13A2(B), thereby improving the display effect of the touch display panel.

[0179] The touch electrode block 121 may be located between two adjacent light-emitting structures 13A of the same light-emitting color.

[0180] Preferably, the touch electrode block 121 may be located between two adjacent blue light-emitting structures 13A2.

[0181] Furthermore, the accommodation opening K2 may be located between two adjacent isolation openings K1. In this way, a touch electrode block 121 located in the accommodation opening K2 is provided between two light-emitting structures 13A in two adjacent isolation openings K1, increasing the arrangement density of the touch electrode blocks 121 on the touch display panel and enhancing the touch effect of the touch display panel.

[0182] In some embodiments, the touch display panel may further include a touch control module, which is electrically connected to a plurality of touch electrodes 12 and is configured to provide a touch signal to the touch electrodes 12 to implement self-capacitive touch sensing.

[0183] As another optional implementation of the disclosed content of the present application, an embodiment of the present application further provides a method for manufacturing a touch display panel, as Figure 11 shown, the method for manufacturing a touch display panel may at least include the following steps:

[0184] S1101. Provide a substrate.

[0185] S1102. Form an isolation structure, a light-emitting layer, and a plurality of touch electrode blocks on the substrate; the isolation structure encloses a plurality of isolation openings and a plurality of accommodation openings; the light-emitting layer includes a plurality of light-emitting structures; the light-emitting structures are located in the isolation openings; adjacent light-emitting structures are isolated by the isolation structure; the touch electrode blocks are located in the accommodation openings; several touch electrode blocks are sequentially electrically connected to form a touch electrode for receiving a touch signal; adjacent touch electrodes are spaced apart; the touch electrode blocks are insulated from the adjacent isolation structure and are arranged in the same layer.

[0186] Specifically, an electrode material layer may be first formed on the substrate, and then the first electrode of the light-emitting structure in the light-emitting layer and a plurality of conductive parts may be formed by etching the electrode material layer. In this way, the mask for the conductive parts can be saved, the manufacturing cost can be reduced, and at the same time, the formed conductive parts can lay a structural foundation for the subsequent manufacture of touch electrodes.

[0187] After forming the first electrode and the plurality of conductive parts, an insulating layer (pixel defining layer) can be formed on the first electrode and the plurality of conductive parts. Further, a spacer structure and a touch electrode block are formed on the side of the insulating layer away from the substrate. Among them, the insulating layer can be used as both a pixel defining layer and an insulator to isolate each touch electrode, saving the individual insulation settings between each touch electrode and also saving the mask, thus reducing the manufacturing cost.

[0188] The touch electrode block located in the accommodation opening can be formed simultaneously when the accommodation opening is formed. The material of the touch electrode block can be the same as that of the spacer structure, that is, the spacer structure and the touch electrode layer are formed simultaneously by etching. Alternatively, the touch electrode block can also be formed in the accommodation opening after the accommodation opening is formed. Comparing the two, forming the touch electrode block simultaneously when forming the accommodation opening makes the manufacturing process simpler and easier to implement. Moreover, forming the spacer structure and the touch electrode layer simultaneously can save the mask for separately manufacturing the touch electrode layer, further reducing the manufacturing cost.

[0189] After forming the isolation opening, a light-emitting functional layer of the light-emitting structure can be formed in the isolation opening by evaporation.

[0190] After forming the light-emitting functional layer, a second electrode can also be formed in the isolation opening. The second electrode can also be formed by evaporation. In this way, the first electrode cooperates with the light-emitting functional layer and the second electrode to form a light-emitting structure.

[0191] In some embodiments, after forming the second electrode, a first encapsulation layer and a second encapsulation layer can be sequentially formed on the spacer structure and the second electrode. Using the second encapsulation layer to further encapsulate the touch electrode block and the first encapsulation layer simultaneously can achieve mask sharing, so that an additional mask is not required for encapsulating the touch electrode, further reducing the manufacturing cost.

[0192] In the embodiments of the present application, the touch electrode block and the spacer structure are arranged on the same layer and insulated from each other, which can not only ensure that touch and display work independently without affecting each other, but also reduce the thickness of the touch display panel. In addition, the number of masks used in the manufacturing process can be reduced, greatly reducing the manufacturing cost.

[0193] For the layer structures and corresponding descriptions of the touch display panel obtained by this manufacturing method, reference can be made to the corresponding descriptions in the touch display panel described above.

[0194] As an optional implementation of the disclosed content of the present application, the embodiments of the present application further provide a display device, which includes: the touch display panel provided in any of the above embodiments. As Figure 11 shown, Figure 11A schematic structural diagram of a display device provided by an embodiment of the present application. The display device may be a smart phone, a tablet computer, a digital camera, etc., which will not be elaborated herein.

[0195] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0196] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A touch display panel, characterized in that, Comprising: A substrate; A light-emitting layer disposed on one side of the substrate, the light-emitting layer including a plurality of light-emitting structures; An isolation structure disposed on one side of the substrate, the isolation structure enclosing to form a plurality of isolation openings and a plurality of accommodation openings, a light-emitting structure being disposed in the isolation openings; a touch control electrode block being disposed in the accommodation openings; a plurality of the touch control electrode blocks being sequentially connected to form a touch control electrode for receiving a touch signal, adjacent touch control electrodes being spaced apart; Adjacent ones of the light-emitting structures are isolated by the isolation structure, and the touch control electrode block is insulated from and disposed in the same layer as the adjacent isolation structure.

2. The touch display panel according to claim 1, wherein It further includes a touch control circuit layer; The touch control circuit layer is disposed on the side of the touch control electrode block close to the substrate, and includes a plurality of spaced-apart conductive portions, the conductive portions corresponding to the touch control electrodes one by one, and a plurality of touch control electrode blocks in the touch control electrodes being electrically connected through the corresponding conductive portions.

3. The touch display panel according to claim 2, wherein, The conductive portion includes a first touch trace extending in a first direction and a second touch trace extending in a second direction, the first direction intersecting the second direction; The touch control electrode block is electrically connected to the first touch trace or the second touch trace through a via; the first touch trace and the second touch trace intersect to form a mesh structure.

4. The touch display panel according to claim 3, wherein Adjacent three of the light-emitting structures form a pixel unit, and a positive projection of the mesh structure on the substrate surrounds a positive projection of the corresponding pixel unit on the substrate; The touch control electrode block is disposed between adjacent pixel units; Preferably, one touch control electrode block is disposed between adjacent two pixel units; Preferably, one touch control electrode block is disposed between adjacent four pixel units.

5. The touch display panel according to claim 4, wherein The accommodation openings are arranged at intervals in an array on the substrate; Optionally, the light-emitting structures are arranged in an array on the substrate, the pixel unit including a light-emitting structure of a first color, a light-emitting structure of a second color, and a light-emitting structure of a third color; a positive projection of the pixel unit on the substrate is disposed within a positive projection of at least one mesh hole of the mesh structure on the substrate; Optionally, the first color is red; the second color is green; The third color is blue; Optionally, the touch control electrode block is located between adjacent two light-emitting structures of the same light-emitting color; Optionally, the accommodation opening is located between adjacent two isolation openings.

6. The touch display panel according to claim 1, wherein The touch display panel further includes a touch control module; the touch control module is electrically connected to the plurality of touch control electrodes for providing a touch signal to the touch control electrodes.

7. The touch display panel according to claim 2, wherein The light-emitting structure includes a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked on the substrate; The first electrode and the conductive portion are disposed in the same layer, and there is a gap between a positive projection of the first electrode on the substrate and a positive projection of the conductive portion on the substrate; Optionally, the first electrode and the conductive portion are made of the same material.

8. The touch display panel according to claim 7, wherein It further includes an insulating layer located on one side of the substrate; A plurality of pixel openings are provided on the insulating layer. The pixel openings expose partial regions of the first electrode. The pixel openings communicate with the isolation openings correspondingly. The light-emitting functional layer of the light-emitting structure is located within the pixel openings.

9. The touch display panel according to claim 8, wherein, The isolation structure is located on a side of the insulating layer away from the substrate; alternatively, a touch opening is further provided on the insulating layer. The touch openings correspond to the accommodation openings one by one. The touch electrode blocks are located within the touch openings of the insulating layer; The insulating layer has a plurality of first through-holes; the plurality of touch electrode blocks are respectively in contact with the conductive portion through corresponding first through-holes; Optionally, the insulating layer includes a pixel definition layer.

10. The touch display panel according to claim 2, wherein, A first planarization layer and a second planarization layer are further included; The first planarization layer, the conductive portion, and the second planarization layer are sequentially stacked on the substrate; The second planarization layer is located on a side of the touch electrode layer close to the substrate.

11. The touch display panel according to claim 10, wherein The light-emitting structure includes a first electrode, a light-emitting functional layer, and a second electrode that are sequentially stacked on the substrate; The touch display panel further includes an insulating layer; The insulating layer is located on a side of the second planarization layer away from the substrate; A plurality of pixel openings are provided on the insulating layer. The pixel openings expose partial regions of the first electrode. The pixel openings communicate with the isolation openings. The light-emitting functional layer of the light-emitting structure is located within the pixel openings; Optionally, the isolation structure is located on a side of the insulating layer away from the substrate; alternatively, a touch opening is further provided on the insulating layer. The touch electrode blocks are located within the touch openings of the insulating layer; The insulating layer has a plurality of first through-holes; the second planarization layer has a plurality of second through-holes; the first through-holes and the second through-holes communicate with each other; the plurality of touch electrode blocks are in contact with the conductive portion through the corresponding first through-holes and second through-holes; Optionally, the insulating layer includes a pixel definition layer.

12. The touch display panel according to any one of claims 7 to 9 and 11, characterized in that, A first encapsulation layer is further included; The first encapsulation layer includes a plurality of encapsulation portions arranged at intervals; The encapsulation portions are located on a side of the second electrode away from the substrate; the orthographic projection of the encapsulation portions on the substrate covers the orthographic projection of the second electrode on the substrate; Optionally, the touch display panel further includes a second encapsulation layer; The second encapsulation layer is located on a side of the first encapsulation layer away from the substrate; the orthographic projection of the second encapsulation layer on the substrate covers the substrate; Optionally, the touch display panel further includes a third encapsulation layer; The third encapsulation layer is located on a side of the second encapsulation layer away from the substrate; the orthographic projection of the third encapsulation layer on the substrate covers the substrate.

13. A touch display panel, characterized in that, Comprising: A substrate; An isolation structure, provided on one side of the substrate, enclosing to form a plurality of isolation openings and a plurality of accommodation openings; The light-emitting functional layer of the light-emitting structure is disposed within the isolation openings; A plurality of touch electrodes arranged at intervals, the touch electrodes including a plurality of electrically connected touch electrode blocks; the touch electrode blocks are located within the accommodation openings and have a gap with the isolation structure.

14. The touch display panel according to claim 13, wherein, A touch circuit layer is further included; The touch circuit layer is on one side of the touch electrode block close to the substrate and includes a plurality of spaced conductive parts; the conductive parts correspond to the touch electrodes one by one; a plurality of touch electrode blocks in the touch electrodes are electrically connected through the corresponding conductive parts.

15. The touch display panel according to claim 14, wherein The conductive part includes a first touch trace extending in a first direction and a second touch trace extending in a second direction, and the first direction intersects with the second direction. The touch electrode block is electrically connected to the first touch trace or the second touch trace through a via hole; the first touch trace and the second touch trace intersect to form a mesh structure.

16. The touch display panel according to claim 15, wherein Adjacent three of the light-emitting structures form a pixel unit, and the orthographic projection of the mesh holes of the mesh structure on the substrate surrounds the orthographic projection of the corresponding pixel unit on the substrate. The touch electrode block is arranged between adjacent pixel units. Preferably, one touch electrode block is arranged between adjacent two pixel units. Preferably, one touch electrode block is arranged between adjacent four pixel units.

17. The touch display panel according to claim 12, wherein It further includes a touch control module; the touch control module is electrically connected to the plurality of touch electrodes and is used to provide touch signals to the touch electrodes.

18. The touch display panel according to claim 12, wherein The touch electrode block is prepared by using a metal material. Optionally, the material of the touch electrode block is one or a combination of copper, silver, gold, molybdenum, aluminum, and titanium.

19. A method for preparing a touch display panel, characterized in that, Comprising: Providing a substrate. Forming an isolation structure, a light-emitting layer, and a plurality of touch electrode blocks on the substrate. The isolation structure encloses to form a plurality of isolation openings and a plurality of accommodation openings. The light-emitting layer includes a plurality of light-emitting structures; the light-emitting structures are located in the isolation openings. Adjacent light-emitting structures are isolated and arranged through the isolation structure; the touch electrode blocks are located in the accommodation openings. A plurality of touch electrode blocks are sequentially electrically connected to form a touch electrode for receiving touch signals; adjacent touch electrodes are spaced apart; the touch electrode blocks are insulated from the adjacent isolation structure and are arranged in the same layer.

20. A display device, characterized in that, Comprising the touch display panel according to any one of claims 1-18.

Images