Touch display panel and display device

Abstract

The present disclosure provides a touch display panel and a display device. The touch display panel comprises: a display panel, wherein a display area comprises a plurality of sub-pixel areas and spacing areas that separate the plurality of sub-pixel areas from each other, a non-display area comprises a binding area located on one side of the display area and a blocking area, the blocking area comprises at least one retaining wall, and the non-display area is divided into a first non-display area comprising the binding area and a second non-display area other than the first non-display area; a touch panel, wherein the touch panel comprises a touch electrode located in the display area and a touch lead electrically connected to the touch electrode, the touch electrode comprises a plurality of touch lines, and the touch lead extends from the display area to the binding area; and an insulating black matrix, located on the side of the touch panel facing away from the display panel, wherein the orthographic projection of the part of the black matrix located in the display area on the display panel is located in the spacing areas, the black matrix is directly in contact with and covers the touch lines and at least part of the touch lead, and the black matrix is located at the edge of the second non-display area, terminating at the inner side of the retaining wall closest to the display area.

Description

A touch display panel and display device Technical Field

[0001] This disclosure relates to the field of touch display technology, and in particular to a touch display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) display panels possess numerous advantages, including self-illumination, ultra-thinness, fast response speed, high contrast, and wide viewing angle, making them a widely popular type of display panel. OLED display panels typically employ a thin-film encapsulation (TFE) structure—an inorganic-organic-inorganic layer layer—to encapsulate the organic light-emitting material within the display panel, thereby blocking water and oxygen and protecting the organic light-emitting material.

[0003] To achieve touch display on OLED display panels, touch structures are typically fabricated directly on the TFE film layer of the OLED display panel, which is known as Flexible Multi-Layer On Cell (FMLOC) touch technology. This technology enables the fabrication of lighter and thinner display devices and can be applied to foldable and rollable OLED display devices.

[0004] To reduce the reflectivity of external light within the OLED display panel and to reduce the overall thickness of the display panel, the related technology utilizes COE (CF on Encapsulation) technology, which involves removing the polarizer (POL), and adding a color filter structure to the TFE film layer of the OLED display panel.

[0005] Summary of the Invention

[0006] This disclosure provides a touch display panel and a display device, the specific solutions of which are as follows:

[0007] This disclosure provides a touch display panel, comprising:

[0008] A display panel includes a display area and a non-display area surrounding the display area. The display area includes a plurality of sub-pixel areas and a spacing area that separates the plurality of sub-pixel areas from each other. The non-display area includes a binding area located on one side of the display area and a blocking area located between the display area and the binding area and surrounding the display area. The blocking area includes at least one barrier wall surrounding the display area. The non-display area is divided into a first non-display area including the binding area and a second non-display area excluding the first non-display area.

[0009] A touch panel is located on the light-emitting side of the display panel. The touch panel includes touch electrodes located in the display area and touch leads electrically connected to the touch electrodes. The touch electrodes include multiple touch lines, and the touch leads extend from the display area to the bonding area.

[0010] An insulating black matrix is ​​located on the side of the touch panel opposite to the display panel. The orthographic projection of the portion of the black matrix in the display area onto the display panel is located in the interval area. The black matrix directly contacts and covers the touch line and at least part of the touch lead. The edge of the black matrix in the second non-display area terminates at the inner side of the barrier closest to the display area.

[0011] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the touch panel further includes a touch insulating layer located between the touch electrodes and the display panel, and the black matrix wraps around the touch lines and the touch leads and is in contact with the touch insulating layer.

[0012] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the distance between one side edge of the black matrix and one side edge of the adjacent touch line is greater than 2.5 μm.

[0013] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix covers all the touch leads located in the second non-display area.

[0014] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix further covers the gap between adjacent touch leads located in the second non-display area.

[0015] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the portion of the blocking area located in the first non-display area is the first blocking area, and the black matrix covers all the touch leads located in the first blocking area.

[0016] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix further covers the gap between adjacent touch leads located in the first blocking area.

[0017] In one possible implementation, the touch display panel provided in the embodiments of this disclosure includes: a driving backplate, a light-emitting device layer located between the driving backplate and the touch panel, and an encapsulation layer located between the light-emitting device layer and the touch panel; the encapsulation layer includes an organic material layer, the edge of which terminates at the inner side of the barrier closest to the display area;

[0018] The touch display panel also includes a raised portion located between the encapsulation layer and the touch panel. The raised portion is made of an organic material, and the orthographic projection of the raised portion on the display panel covers the orthographic projection of the first blocking area on the display panel.

[0019] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the bonding area includes a plurality of bonding pads, the bonding pads include at least a first conductive portion and a second conductive portion stacked on top of each other, the second conductive portion is located above the first conductive portion, the second conductive portion and the touch lead are disposed on the same layer and electrically connected, and the black matrix is ​​located at the edge of the first non-display area and terminates at the side of the first conductive portion near the display area.

[0020] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the driving backplane includes: a substrate, at least one source / drain metal layer located between the substrate and the light-emitting device layer, and at least one planarization layer located between the source / drain metal layer closest to the substrate and the light-emitting device layer.

[0021] The first conductive portion is disposed in the same layer as the source / drain metal layer furthest from the substrate. The planarization layer located between the source / drain metal layer furthest from the substrate and the light-emitting device layer is a third planarization layer. The third planarization layer includes a first portion that orthographically covers the plurality of bonding pads and part of the touch leads, and a second portion other than the first portion. The first portion exposes the middle region of each of the first conductive portions. The thickness of the first portion is a first thickness, and the thickness of the second portion is a second thickness. The first thickness is less than the second thickness.

[0022] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix is ​​located at the edge of the first non-display area, ending within the second portion.

[0023] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the width of the touch lead is greater than 3.2 μm.

[0024] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the touch lead includes a first lead and a second lead that are electrically connected. The first lead extends from the display area to the interior of the black matrix located in the first non-display area, and the second lead extends from the interior of the black matrix located in the first non-display area to be electrically connected to the second conductive portion; wherein...

[0025] The width of the second lead is greater than the width of the first lead.

[0026] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the width of the area covered by the black matrix of the second lead gradually increases along the extension direction of the second lead and along the direction from the display area to the bonding area, and the width of the area of ​​the second lead not covered by the black matrix is ​​the same as the width of the second conductive part.

[0027] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the area of ​​the second lead covered by the black matrix has a length greater than 2 μm along the extension direction of the second lead.

[0028] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the width of the first lead is less than 3.2 μm, and the width of the second lead is greater than 3.2 μm and less than or equal to the width of the second conductive portion.

[0029] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix is ​​located at the edge of the first non-display area, ending within the first portion.

[0030] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the width of the touch lead is less than 3.2 μm, the distance between the edge of the second conductive part near the display area and the edge of the first conductive part near the display area is a first distance, the distance between the edge of the second conductive part away from the display area and the edge of the first conductive part away from the display area is a second distance, and the first distance is greater than the second distance;

[0031] The black matrix is ​​located at the edge of the first non-display area, ending within the first portion corresponding to the first distance.

[0032] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the difference between the first distance and the second distance is greater than 2 μm.

[0033] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix further covers the gap between adjacent touch leads in the bonding area.

[0034] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix is ​​arranged to have a plurality of openings corresponding to the sub-pixel areas;

[0035] The touch display panel further includes: a color filter structure located within the opening, and a protective layer located on the side of the color filter structure facing away from the display panel.

[0036] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the protective layer includes: a first protective layer disposed near the color filter structure, and a second protective layer located on the side of the first protective layer facing away from the display panel; the surface of the side of the first protective layer facing away from the display panel is uneven.

[0037] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the thickness of the first protective layer is greater than the thickness of the second protective layer.

[0038] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the black matrix is ​​an infrared light-transmitting structure, and the black matrix is ​​doped with black organic polymer material.

[0039] In one possible implementation, in the touch display panel provided in the embodiments of this disclosure, the touch electrodes include a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction, wherein the first direction intersects the second direction;

[0040] The first touch electrode includes a plurality of first electrode blocks arranged along the second direction, and two adjacent first electrode blocks are electrically connected through a first connecting portion. The second touch electrode includes a plurality of second electrode blocks arranged along the first direction, and two adjacent second electrode blocks are electrically connected through a second connecting portion.

[0041] The first electrode block, the second electrode block, and the first connecting portion are disposed in the same layer, and the second connecting portion is located on the side of the touch insulating layer opposite to the first electrode block;

[0042] The first electrode block, the second electrode block, the first connecting part, and the second connecting part are each a grid-like structure formed by the touch lines.

[0043] Accordingly, this disclosure also provides a display device, including the touch display panel described in any of the above embodiments of this disclosure. Attached Figure Description

[0044] Figure 1 is a schematic diagram of the planar structure of the touch display panel provided in an embodiment of this disclosure;

[0045] Figure 2 is a cross-sectional schematic diagram of a sub-pixel area of ​​the display area in Figure 1;

[0046] Figure 3 is a schematic cross-sectional view of a portion of the film layer along the CC' direction in Figure 1;

[0047] Figure 4 is another cross-sectional schematic diagram of a portion of the film layer along the CC' direction in Figure 1;

[0048] Figure 5 is a side-view angle comparison diagram of the solution of directly covering the touch electrode with the black matrix provided in the present disclosure in the display area and the solution of setting a TOC film layer between the black matrix and the touch electrode in related technologies.

[0049] Figure 6 is a plan view of the first blocking area in Figure 1;

[0050] Figure 7 is another planar schematic diagram of the first blocking area in Figure 1;

[0051] Figure 8 is a schematic diagram of the cross section along the EE' direction in Figures 6 and 7;

[0052] Figure 9 is another planar schematic diagram of the first blocking area in Figure 1;

[0053] Figure 10 is another planar schematic diagram of the first blocking area in Figure 1;

[0054] Figure 11 is a schematic diagram of the cross section along the EE' direction in Figures 9 and 10;

[0055] Figure 12 is a planar schematic diagram of the area where a portion of the touch lead is located in the binding area;

[0056] Figure 13 is a schematic diagram of the cross section along the FF' direction in Figure 12;

[0057] Figure 14 is another planar schematic diagram of the area where a portion of the touch lead is located in the binding area;

[0058] Figure 15 is a cross-sectional view of Figure 14 along the FF' direction;

[0059] Figure 16 is a planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located.

[0060] Figure 17 is another planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located;

[0061] Figure 18 is another planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located;

[0062] Figure 19 is another planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located;

[0063] Figure 20 is a schematic diagram of the cross section along the GG' direction in Figures 16-19;

[0064] Figure 21 is another planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located;

[0065] Figure 22 is another planar schematic diagram of the length of the touch lead near the bonding pad in the bonding area and the area where the bonding pad is located;

[0066] Figure 23 is a schematic diagram of the cross section along the GG' direction in Figures 21 and 22;

[0067] Figure 24 is another cross-sectional schematic diagram of a sub-pixel area of ​​the display area in Figure 1. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0069] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms as used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0070] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0071] This disclosure provides a touch display panel, including a display panel 100 and a touch panel located on the light-emitting side of the display panel, as shown in FIG1. ​​FIG1 is a schematic diagram of the planar structure of the touch display panel. The display panel 100 includes a display area AA and a non-display area BB surrounding the display area AA. The display area AA generally includes multiple sub-pixel areas and a spacing area that separates the multiple sub-pixel areas from each other. The non-display area BB includes a binding area B1 located on one side of the display area AA and a blocking area B2 located between the display area AA and the binding area B1 and surrounding the display area AA. The blocking area B2 includes at least one barrier wall surrounding the display area AA. In this disclosure embodiment, the blocking area B2 includes two barriers wall as an example, such as a first barrier wall Dam1 close to the display area AA and a second barrier wall Dam2 located on the side of the first barrier wall Dam1 away from the display area AA. The setting of the barrier wall can improve the water and oxygen barrier performance of the display panel 100.

[0072] Specifically, as shown in Figure 1, the non-display area BB of the display panel 100 is divided into a first non-display area BB1 including a binding area B1 and a second non-display area BB2 excluding the first non-display area BB1. It can be understood that the binding area B1 is generally set in the lower border area of ​​the display panel. This disclosure refers to the lower border area of ​​the display panel as the first non-display area BB1, and the left, upper and right border areas as the second non-display area BB2.

[0073] Specifically, as shown in Figure 2, which is a cross-sectional view of a sub-pixel area of ​​display area AA in Figure 1, the display panel 100 includes: a driving backplate 1, a light-emitting device layer 2 located between the driving backplate 1 and the touch panel 200, and an encapsulation layer 3 located between the light-emitting device layer 2 and the touch panel 200. The encapsulation layer 3 may include a first inorganic layer 31, an organic material layer 32, and a second inorganic layer 33 stacked together. In this embodiment, the encapsulation layer 3 not only isolates the light-emitting device layer 2 from the outside environment, preventing water and oxygen from intruding into the organic light-emitting layer of the light-emitting device layer 2 of the display panel and affecting the lifespan of the display panel, but also has a flat surface on the side of the encapsulation layer 3 facing away from the driving backplate 1, allowing subsequent film layers (e.g., touch panels) to be fabricated on a flat surface, which is more conducive to improving the touch display effect of the touch display panel.

[0074] In some embodiments, as shown in FIG2, the driving backplate 1 includes: a substrate 11, at least one source / drain metal layer (three layers are used as an example in this disclosure) located between the substrate 11 and the light-emitting device layer 2, and at least one planarization layer (three layers are used as an example in this disclosure) located between the source / drain metal layer closest to the substrate 11 and the light-emitting device layer 2. Specifically, as shown in Figure 2, the driving backplate 1 includes: a substrate 11, and a buffer layer 12, an active layer 13, a first gate insulating layer 14, a first gate metal layer 15, a second gate insulating layer 16, a second gate metal layer 17, an interlayer dielectric layer 18, a first source / drain metal layer 19 (SD1), a passivation layer 20, a first planarization layer 21, a second source / drain metal layer 22 (SD2), a second planarization layer 23, a third source / drain metal layer 24 (SD3), and a third planarization layer 25, which are sequentially stacked on the driving backplate 1. The light-emitting device layer 2 may include an anode layer 26, a pixel defining layer 27, a light-emitting functional layer 28, and a cathode layer 29, which are sequentially stacked on the driving backplate 1. The anode layer 26 can be electrically connected to the first source / drain metal layer 19 through the second source / drain metal layer 22.

[0075] Optionally, the substrate 11 can be a rigid substrate or a flexible substrate. The rigid substrate can be, but is not limited to, glass, etc.; the flexible substrate can be, but is not limited to, polyethylene terephthalate, polyethylene terephthalate, polyimide, etc.

[0076] Specifically, as shown in Figure 2, the first source-drain metal layer 19 is generally provided with source, drain, data lines, etc., the second source-drain metal layer 22 is generally provided as an intermediate electrode connecting the anode layer 26 and the drain, and the third source-drain metal layer 24 is generally based on the FIAA technology used in narrow bezel products. This technology adds a third source-drain metal layer 24 and a third planarization layer 25. The third source-drain metal layer 24 is mainly used for data signal lines in the fanout area of ​​the display panel 100 to achieve the narrow bezel design of the bottom bezel.

[0077] Specifically, as shown in Figures 1 and 2, a touch panel 200 is formed on the encapsulation layer 3 of the display panel 100. The touch panel 200 includes a touch electrode 4 located in the display area AA and touch leads 5 electrically connected to the touch electrode 4. The touch electrode 4 includes multiple touch lines 40. The touch leads 5 extend from the display area AA to the bonding area B1. The touch leads 5 are located in the second non-display area BB2 between the first barrier Dam1 and the display area AA. The touch leads 5 need to cross the first barrier Dam1 and the second barrier Dam2 in the first non-display area BB1 and extend to the bonding area B1.

[0078] Specifically, as shown in Figures 1 and 2, the touch electrode 4 includes a plurality of first touch electrodes 41 arranged along the first direction X and a plurality of second touch electrodes 42 arranged along the second direction Y. The first direction X intersects the second direction Y. In this embodiment of the disclosure, the first direction X is perpendicular to the second direction Y.

[0079] Specifically, as shown in Figures 1 and 2, the first touch electrode 41 includes a plurality of first electrode blocks 411 arranged along the second direction Y, and two adjacent first electrode blocks 411 are electrically connected through a first connecting portion 6. The second touch electrode 42 includes a plurality of second electrode blocks 421 arranged along the first direction X, and two adjacent second electrode blocks 421 are electrically connected through a second connecting portion 7.

[0080] Specifically, as shown in Figures 1 and 2, the touch panel 200 also includes a touch insulating layer 8 located between the touch electrode 4 and the display panel 100. The first electrode block 411, the second electrode block 421, and the first connecting portion 6 are disposed in the same layer, and the second connecting portion 7 is located on the side of the touch insulating layer 8 opposite to the first electrode block 411. In the following description, the film layer containing the first electrode block 411, the second electrode block 421, and the first connecting portion 6 is referred to as the TMB layer, and the film layer containing the second connecting portion 7 is referred to as the TMA layer.

[0081] Specifically, the touch insulating layer 8 can be made of organic materials, such as PI.

[0082] Specifically, as shown in Figure 1, the first electrode block 411, the second electrode block 421, the first connecting part 6, and the second connecting part 7 are all mesh structures composed of touch lines 40.

[0083] Optionally, of the first touch electrode 41 and the second touch electrode 42, one is a driving electrode and the other is a sensing electrode.

[0084] Specifically, as shown in Figure 2, the touch panel 200 also includes a touch buffer layer 9 located between the encapsulation layer 3 and the second connecting portion 7.

[0085] Specifically, the touch buffer layer 9 can be made of organic materials, such as PI; or it can be made of inorganic materials, such as silicon nitride, silicon oxide, silicon oxynitride, etc.

[0086] Specifically, as shown in Figure 2, the touch display panel also includes an insulating black matrix 10. This black matrix 10 is located on the side of the touch panel 200 opposite to the display panel 100. The orthographic projection of the portion of the black matrix 10 located in the display area AA onto the display panel 100 is located in the interval area. That is, the black matrix 10 is configured to have multiple openings 101 corresponding to the sub-pixel areas. A color filter structure 102 is disposed within each opening 101. The color filter structure 102 is configured to filter incident light from the outside. For example, the multiple color filter structures 102 may include a red filter structure (R), a green filter structure (G), and a blue filter structure (B). On one hand, the color filter structure 102 can filter the light emitted from the display panel 100, improving the color purity of the emitted light. On the other hand, the color filter structure 102 can filter external light, reducing ambient light entering the touch display panel and thus reducing the reflection of ambient light by the touch display panel, improving the user experience.

[0087] Specifically, as shown in Figure 2, the light-emitting device layer 2 includes multiple light-emitting units composed of an anode layer 26, a light-emitting functional layer 28, and a cathode layer 29, with each of the multiple light-emitting units corresponding to an opening 101.

[0088] It should be noted that the light-emitting device in the embodiments of this disclosure can be an OLED device or a quantum dot light-emitting diode (QLED) device, etc., and there is no specific limitation thereto.

[0089] Specifically, as shown in Figures 1-4, Figure 3 is a cross-sectional schematic diagram of a portion of the film layer along the CC' direction in Figure 1, and Figure 4 is another cross-sectional schematic diagram of a portion of the film layer along the CC' direction in Figure 1. The black matrix 10 directly contacts and covers the touch line 40 and at least a portion of the touch lead 5. The black matrix 10 is located at the edge of the second non-display area BB2 and ends at the inner side of the barrier closest to the display area AA (i.e., the first barrier Dam1).

[0090] The touch display panel provided in this embodiment employs an insulating black matrix, which is non-conductive. This eliminates the need for the TOC film layer, which is used in related technologies to protect the touch electrodes, by placing the insulating black matrix directly in contact with the touch lines and leads covering the touch electrodes. This saves on the TOC film layer and reduces production costs. Furthermore, this disclosure sets the edge of the black matrix in the second non-display area to end at the inner side of the first barrier wall closest to the display area, preventing the black matrix from crossing the first barrier wall in the second non-display area. This avoids the accumulation of the black matrix between the first and second barrier walls due to the high step difference. Accumulated black matrix is ​​difficult to fully expose during exposure and prone to peeling during development, affecting the performance of the touch display panel. Therefore, this disclosure prevents the black matrix from crossing the first barrier wall in the second non-display area.

[0091] In some embodiments, in the touch display panel provided in the present disclosure, the black matrix can be an infrared light-transmitting structure. This type of black matrix does not contain conductive carbon black, and is generally doped with non-conductive black organic polymer materials.

[0092] In some embodiments, in the touch display panel provided in this disclosure, as shown in Figures 2 and 3, the black matrix 10 encloses the touch lines 40 and touch leads 5 and is disposed in contact with the touch insulating layer 8. In this way, the black matrix 10 can protect the touch lines 40 and touch leads 5, avoiding the risk of lateral corrosion of the touch lines 40 and touch leads 5 during the development stage of subsequent film fabrication, which could lead to peeling.

[0093] In some embodiments of the touch display panel provided in this disclosure, as shown in Figures 2 and 3, considering the overlay alignment relationships and misalignment of the TMB layer to the TMA layer, the TMA layer to SD2, the black matrix 10 to the pixel boundary layer 27, the pixel boundary layer 27 to the anode layer 26, and the anode layer 26 to SD2, as well as the CD misalignment between the TMB layer and the black matrix 10, it can be calculated that the black matrix 10 needs to provide a 1.98mm edge wrapping for the touch lines 40 and 5 of the TMB layer. Only a thickness of μm or more can ensure that the touch line 40 and touch lead 5 can be completely covered at any position; then, considering that the CD deviation between the TMB layer and the black matrix 10 is 3μm, and the risk of peeling is high when the center value of the line width of the black matrix 10 is less than 8μm, it can be calculated that when the distance d between one side edge of the black matrix 10 and the one side edge of the adjacent touch line 40 is greater than (8-3) / 2=2.5μm, the black matrix 10 can protect the touch line 40 and touch lead 5 from the risk of peeling.

[0094] Specifically, as shown in Figure 3, in this embodiment, a black matrix 10 is used to cover the touch lead 5. This is because when the adhesion of the black matrix 10 is weak, using the black matrix 10 to cover the touch lead 5 reduces the risk of peeling.

[0095] In some embodiments, in the touch display panel provided in the present disclosure, as shown in FIG1 and FIG3, the black matrix 10 covers all touch leads 5 located in the second non-display area BB2.

[0096] In some embodiments, as shown in FIG1 and FIG4, in the touch display panel provided in the present disclosure, the black matrix 10 also covers the gap between adjacent touch leads 5 located in the second non-display area BB2. In this embodiment, the black matrix 10 is used to fully cover the area between the first barrier Dam1 and the display area AA. This is because when the adhesion of the black matrix 10 is strong, the black matrix 10 between the first barrier Dam1 and the display area AA does not need to be exposed and developed, thus reducing the difficulty of the manufacturing process.

[0097] In some embodiments, in the touch display panel provided in this disclosure, as shown in FIG5, FIG5 is a side-view angle comparison diagram of the scheme in which the black matrix 10 provided in this disclosure directly covers the touch electrode 4 in the display area AA and the scheme in the related art where a TOC film layer is set between the black matrix and the touch electrode 4. The side-view angle corresponding to this disclosure embodiment is β. The side-view angle corresponding to the related art is α. It can be seen that β > α. Therefore, the side-view color deviation and brightness attenuation corresponding to the black matrix 10 setting scheme of this disclosure embodiment are smaller than those of the scheme in the related art. Therefore, this disclosure embodiment can reduce the L-Decay (brightness attenuation curve of the light emitted by the display panel with viewing angle) and reduce color deviation of the touch display panel.

[0098] In some embodiments, in the touch display panel provided in this disclosure, as shown in FIG1, the portion of the blocking area B2 located in the first non-display area BB1 is the first blocking area B21; as shown in FIG6-FIG. FIG6 is a planar schematic diagram of the first blocking area B21 in FIG1, FIG7 is another planar schematic diagram of the first blocking area B21 in FIG1, and FIG8 is a cross-sectional schematic diagram along the EE' direction in FIG6 and FIG7. The black matrix 10 covers all the touch leads 5 located in the first blocking area B21. In this embodiment, FIG6 shows the use of the black matrix 10 to edge-cover the touch leads 5 of the first blocking area B21. This is because when the adhesion of the black matrix 10 is weak, using the black matrix 10 to edge-cover the touch leads 5 reduces the risk of peeling.

[0099] In some embodiments, as shown in FIG7, in the touch display panel provided in the present disclosure, the black matrix 10 also covers the gap between adjacent touch leads 5 located in the first blocking area B21. In this embodiment, the black matrix 10 is used to fully cover the first blocking area B21. This is because when the adhesion of the black matrix 10 is strong, the black matrix 10 in the first blocking area B21 does not need to be exposed and developed, thus reducing the difficulty of the manufacturing process.

[0100] In some embodiments, in the touch display panel provided in the present disclosure, as shown in FIG8, the first barrier Dam1 and the second barrier Dam2 can both be formed by stacking sub-barriers that are disposed on the same layer as the planarization layer (e.g., the second planarization layer 23 and the third planarization layer 25) and the pixel defining layer 27 in the display area AA. The height of the first barrier Dam1 is generally smaller than the height of the second barrier Dam2. For example, the first barrier Dam1 is formed by stacking sub-barriers 001 and 002 that are disposed on the same layer as the second planarization layer 23 and the third planarization layer 25 in the display area AA, and the second barrier Dam2 is formed by stacking sub-barriers 001, 002 and 003 that are disposed on the same layer as the second planarization layer 23, the third planarization layer 25 and the pixel defining layer 27 in the display area AA. The edge of the organic material layer 32 of the encapsulation layer 3 ends at the inner side of the first barrier Dam1 that is closest to the display area AA.

[0101] Specifically, as shown in Figures 6-8, due to the high step difference between the first barrier Dam1 and the second barrier Dam2, the black matrix 10 accumulates between the first barrier Dam1 and the second barrier Dam2, especially at the corner position between the first barrier Dam1 and the second barrier Dam2, where a thicker black matrix (represented by 10') tends to accumulate. When exposing the black matrix 10, it is difficult to fully expose the accumulated thick black matrix (10'), and the thick black matrix (10') is prone to peeling during the development stage. In current touch display products, before the encapsulation layer 3 is fabricated and before the touch buffer layer 9 is fabricated, the same material as the organic material layer 32 in the encapsulation layer 3 is generally printed in the hole (Hole) area to strengthen the Hole area and reduce the risk of cracking in the Hole area. This disclosure addresses the peeling issue of the black matrix in Figure 8. As shown in Figures 9-11, Figure 9 is another planar schematic diagram of the first blocking region B21 in Figure 1, Figure 10 is another planar schematic diagram of the first blocking region B21 in Figure 1, and Figure 11 is a cross-sectional schematic diagram along the EE' direction in Figures 9 and 10. The touch display panel also includes a raised portion 400 located between the encapsulation layer 3 and the touch panel 200. The raised portion 400 is made of organic material, and its orthogonal projection on the display panel 100 covers the orthogonal projection of the first blocking region B21 on the display panel 100. Thus, this disclosure allows for the simultaneous printing of organic material in the Hole area and the formation of the raised portion 400 in the first blocking region B21, reducing the step difference in the first blocking region B21 and avoiding the risk of peeling during subsequent development of the black matrix 10, which accumulates between the first barrier Dam1 and the second barrier Dam2.

[0102] In some embodiments, in the touch display panel provided in the present disclosure, as shown in FIG1, the first non-display area BB1 further includes a bending area BD located between the first blocking area B21 and the bonding area B1; as shown in FIG1, FIG8 and FIG11, the portion of the touch lead 5 leading out from the display area AA to the bending area BD generally adopts a double-layer metal trace. For example, the touch lead 5 includes a first sub-lead 51 located in the TMA layer and a second sub-lead 52 located in the TMB layer. The first sub-lead 51 and the second sub-lead 52 are electrically connected through a via penetrating the touch insulating layer 8 to reduce the resistance of the touch lead 5; the portion of the touch lead 5 located in the bending area BD is generally jumpered to the SD2 layer, and the portion of the touch lead 5 located in the bonding area B1 is jumpered to the TMA layer and the TMB layer. That is, the portion of the touch lead 5 located in the bonding area BB adopts the first sub-lead 51 and the second sub-lead 52 that are electrically connected.

[0103] It should be noted that the touch lead 5 can also be routed in a single layer. For example, some touch leads 5 can be placed on the TMA layer and some touch leads 5 can be placed on the TMB layer, which can save wiring space.

[0104] In some embodiments, in the touch display panel provided in the present disclosure, as shown in Figures 12-15, Figure 12 is a planar schematic diagram corresponding to the area where a portion of the length of the touch lead 5 is located in the bonding area B1, Figure 13 is a cross-sectional schematic diagram along the FF' direction in Figure 12, Figure 14 is another planar schematic diagram corresponding to the area where a portion of the length of the touch lead 5 is located in the bonding area B1, and Figure 15 is a cross-sectional schematic diagram along the FF' direction in Figure 14. In the embodiments, Figures 12 and 13 show that the touch lead 5 in the bonding area B1 is covered by a black matrix 10. This is because when the adhesion of the black matrix 10 is weak, covering the touch lead 5 with the black matrix 10 reduces the risk of peeling. Figures 14 and 15 of the embodiment show that the black matrix 10 also covers the gap between adjacent touch leads 5 of the bonding area B1, that is, the bonding area B1 is fully covered by the black matrix 10. When the adhesion of the black matrix 10 is strong, the black matrix 10 of the bonding area B1 does not need to be exposed and developed, which reduces the difficulty of the process.

[0105] In some embodiments, in the touch display panel provided in the present disclosure, as shown in FIG1, the bonding area B1 includes a driver chip (IC) area and a flexible circuit board (FPC) area. The driver chip (IC) is used to provide electrical signals to the display panel 100, and the flexible circuit board (FPC) is used to provide electrical signals to the driver chip (IC) and the touch panel 200. The flexible circuit board (FPC) area of ​​the bonding area B1 includes a plurality of bonding pads 500. As shown in FIG16-FIG23, FIG16 is a planar schematic diagram of a portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 corresponding to the area where the bonding pad 500 is located. FIG17 is another planar schematic diagram of a portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 corresponding to the area where the bonding pad 500 is located. FIG18 is yet another planar schematic diagram of a portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 corresponding to the area where the bonding pad 500 is located. Figure 9 is another planar schematic diagram of the area corresponding to the portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 and the area where the bonding pad 500 is located. Figure 20 is a cross-sectional schematic diagram along the GG' direction in Figures 16-19. Figure 21 is another planar schematic diagram of the area corresponding to the portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 and the area where the bonding pad 500 is located. Figure 22 is another planar schematic diagram of the area corresponding to the portion of the length of the touch lead 5 near the bonding pad 500 in the bonding area B1 and the area where the bonding pad 500 is located. Figure 23 is a cross-sectional schematic diagram along the GG' direction in Figures 21 and 22. The bonding pad 500 includes at least a first conductive part 501 and a second conductive part 502 stacked together. The second conductive part 502 is located above the first conductive part 501. The second conductive part 502 and the touch lead 5 are disposed on the same layer and electrically connected. The black matrix 10 is located at the edge of the first non-display area BB1 and ends at the side of the first conductive part 501 near the display area AA.

[0106] In some embodiments, in the touch display panel provided in the present disclosure, as shown in Figures 16-23, the first conductive portion 501 is disposed in the same layer as the source / drain metal layer (SD3) furthest from the substrate 11. The planarization layer located between the source / drain metal layer (SD3) furthest from the substrate 11 and the light-emitting device layer 2 is a third planarization layer 25. The third planarization layer 25 includes a first portion 251 that orthographically covers multiple bonding pads 500 and part of the touch leads 5, and a second portion 252 excluding the first portion 251. The first portion 251 exposes the middle area of ​​each first conductive portion 501. The thickness of the first portion 251 is a first thickness H1, and the thickness of the second portion 252 is a second thickness H2. The first thickness H1 is less than the second thickness H2. In this way, the step difference between the area where the bonding pads 500 are located and the surrounding area where the first portion 251 is located is small, which is beneficial for the FPC to be pressed with the bonding pads 500.

[0107] The inventors of this case discovered that after five development cycles, the maximum width of the single-sided undercut of the touch lead 5 in the TMB layer is 0.8 μm, and the sum of the two undercuts is 1.6 μm. If the width of the touch lead 5 is less than 3.2 μm, the width of the undercut area of ​​the TMB layer will be greater than the width of the connection area electrically connected to the TMA layer. This increases the risk of peeling of the TMB layer due to external forces. Therefore, this embodiment requires different black matrix 10 coverage schemes for touch leads 5 with widths greater than 3.2 μm and less than 3.3 μm to avoid the risk of peeling of the TMB layer due to external forces.

[0108] In some embodiments of the touch display panel provided in this disclosure, as shown in Figures 1, 16, 17 and 20, when the width of the touch lead 5 is greater than 3.2 μm, the TMB layer is less prone to peeling. Therefore, the edge of the black matrix 10 located in the first non-display area BB1 can be terminated within the second part 252. This can reduce the step difference between the area where the bonding pad 500 is located and the surrounding area where the first part 251 is located, and can avoid the problem of abnormal crimping between the FPC and the bonding pad 500.

[0109] In some embodiments, in the touch display panel provided in this disclosure, as shown in FIG1 and FIGS. 18-20, the touch lead 5 includes a first lead 53 and a second lead 54 electrically connected. The first lead 53 extends from the display area AA to the interior of the black matrix 10 located in the first non-display area BB1, and the second lead 53 extends from the interior of the black matrix 10 located in the first non-display area BB1 to be electrically connected to the second conductive part 502; wherein, the width of the second lead 54 is greater than the width of the first lead 53. In this way, the narrower first lead 53 is completely covered and protected by the black matrix 10 from peeling due to subsequent film development and corrosion, while the wider second lead 54 is also protected from peeling due to external forces.

[0110] In some embodiments of the touch display panel provided in this disclosure, as shown in FIG1 and FIGS. 18-20, the width of the first lead 53 is less than 3.2 μm, and the width of the second lead 54 is greater than 3.2 μm and less than or equal to the width of the second conductive portion 502. Thus, the first lead 53, with a width less than 3.2 μm, is protected by the black matrix 10 and will not peel due to subsequent film development and etching, while the second lead 54, with a width greater than 3.2 μm starting from the inside of the black matrix 10, will also not peel due to external forces.

[0111] In some embodiments of the touch display panel provided in this disclosure, as shown in Figures 18-20, the width of the area of ​​the second lead 54 covered by the black matrix 10 gradually increases along the extension direction of the second lead 54 and in the direction from the display area AA to the bonding area B1. The width of the area of ​​the second lead 54 not covered by the black matrix 10 can be the same as the width of the second conductive part 502, that is, the second lead 54 gradually increases from inside the black matrix 10 in the direction from the display area AA to the bonding area B1 until it is the same as the width of the second conductive part 502. Of course, the width of the area of ​​the second lead 54 covered by the black matrix 10 can also be the same as the width of the second conductive part 502.

[0112] In some embodiments, as shown in Figures 18-20, in the touch display panel provided in the present disclosure, the length of the area covered by the black matrix 10 along the extension direction of the second lead 54 is greater than 2 μm, so that the first lead 53, which is less than 3.2 μm, can be completely covered and protected by the black matrix 10.

[0113] It should be noted that the first sub-lead 51 and the second sub-lead 52 included in the touch lead 5 in Figures 11, 13 and 15 refer to the double-layer routing of the touch lead 5. The first lead 53 and the second lead 54 included in the touch lead 5 in Figures 18 and 19 refer to the routing on the plane extending from the display area AA to the bonding area B1.

[0114] In some embodiments of the touch display panel provided in this disclosure, as shown in Figures 21-23, when the width of the touch lead 5 is less than 3.2 μm, the edge of the black matrix 10 located in the first non-display area BB1 can also be terminated within the first portion 251. However, this results in a large step difference between the area where the bonding pad 500 is located and the surrounding area where the first portion 251 is located, which can easily lead to abnormal crimping between the FPC and the bonding pad 500. To avoid this problem, in this disclosure embodiment, the distance between the edge of the second conductive part 502 near the display area AA and the edge of the first conductive part 501 near the display area AA is set as a first distance D1, and the distance between the edge of the second conductive part 502 away from the display area AA and the edge of the first conductive part 501 away from the display area AA is set as a first distance D1. The distance between the edge of the display area AA and the edge is set as the second distance D2, and the first distance D1 is greater than the second distance D2. The black matrix 10 is located at the edge of the first non-display area BB1 and ends within the first part 251 corresponding to the first distance D1. In this way, the black matrix 10 can completely cover and protect the touch lead 5 which is less than 3.2μm, preventing the touch lead 5 from being corroded and causing peeling during subsequent film development. In addition, this embodiment is equivalent to extending the second conductive part 502 of the bonding pad 500 to the display area AA by a certain distance. In this way, the black matrix 10 ends within the first part 251 corresponding to the first distance D1, which will not reduce the area of ​​the bonding area between the bonding pad 500 and the FPC, thereby avoiding the problem of abnormal bonding of the bonding pad 500.

[0115] In some embodiments, in the touch display panel provided in the present disclosure, as shown in Figures 21-23, the difference between the first distance D1 and the second distance D2 can be greater than 2μm. For example, the second conductive part 502 can be extended to the display area AA by a distance greater than 2μm. In this way, the edge of the black matrix 10 ends in the area where the extended 2μm is located, so that the area of ​​the pressing area of ​​the bonding pad 500 remains unchanged.

[0116] In some embodiments, as shown in FIG20 and FIG23, in the touch display panel provided in the present disclosure, the bonding pad 500 may further include a third conductive portion 503 located on the side of the first conductive portion 501 opposite to the second conductive portion 502, and the third conductive portion 503 is disposed in the same layer as the second source / drain metal layer (SD2).

[0117] In some embodiments, as shown in Figures 2-4, the touch display panel provided in the present disclosure further includes a protective layer 300 located on the side of the color filter structure 102 facing away from the display panel 100. The material of the protective layer 300 is an organic material, such as PI.

[0118] In some embodiments, the adhesion between the black matrix and the TMB layer of COE products is higher than that between the black matrix and SiNx or organic materials. Therefore, the black matrix is ​​prone to remain on the FOP area, IC area and bonding pads of the bonding area, causing abnormal module pressing. Currently, COE products undergo a full-surface descum process after the protective layer process to remove the black matrix remaining in the bonding area. However, while the black matrix is ​​being removed, the surface roughness of the protective layer is also cracked. When the MCL adhesive is applied to the bending area of ​​the touch display panel, the leveling property of the MCL adhesive is affected, resulting in defects such as bending cracks. In order to remove the black matrix remaining in the bonding area without cracking the surface roughness of the protective layer, as shown in FIG24, the protective layer 300 in the above-mentioned touch display panel provided in the embodiments of this disclosure includes: a first protective layer 301 disposed near the color filter structure 102, and a second protective layer 302 located on the side of the first protective layer 301 facing away from the display panel 100; the surface of the side of the first protective layer 301 facing away from the display panel 100 is uneven. This allows the Descum process to remove the residual black matrix in the binding area B1 after the first protective layer 301 is fabricated. The surface of the first protective layer 301 after the Descum process is rough (i.e. uneven). However, after the Descum process, a second protective layer 302 is fabricated on the first protective layer 301. The roughness of the surface of the first protective layer 301 is filled by the second protective layer 302, so the surface of the second protective layer 302 is smooth. The solution disclosed herein can solve the problem of rough surface of a single-layer protective layer after the Descum process in related technologies.

[0119] In some embodiments, in the touch display panel provided in the present disclosure, as shown in FIG24, the thickness of the first protective layer 301 is greater than the thickness of the second protective layer 302. In this way, the first protective layer 301 can completely cover the color filter structure 102, and after the Descum process, the first protective layer 301 covering the color filter structure 102 will not be completely etched, and can still protect the color filter structure 102.

[0120] Specifically, in related technologies, the thickness of a single protective layer is generally 4.5 μm. In this embodiment, the thickness of the first protective layer 301 can be 3.0 μm, and the thickness of the second protective layer 302 can be 1.5 μm. Of course, the thickness of the first protective layer 301 and the thickness of the second protective layer 302 can be allocated according to the requirements of the manufacturing process.

[0121] In specific implementations, the touch display panel provided in the embodiments of this disclosure may also include other functional film layers well known to those skilled in the art, which will not be described in detail here.

[0122] Based on the same inventive concept, this disclosure also provides a display device, including the touch display panel described above in this disclosure.

[0123] In specific implementations, the display device provided in the embodiments of this disclosure may further include a cover plate covering the touch display panel. Specifically, the cover plate may be a rigid cover plate or a flexible cover plate.

[0124] The display device can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Other essential components of this display device are readily understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting this disclosure. The principle by which this display device solves the problem is similar to that of the aforementioned touch display panel; therefore, the implementation of this display device can be referred to the implementation of the aforementioned touch display panel, and repetitions will not be repeated here.

[0125] This disclosure provides a touch display panel and display device. By employing an insulating black matrix, which is non-conductive, this disclosure eliminates the need for the TOC film layer (used in related technologies) between the touch electrodes and the black matrix to protect the touch electrodes. In other words, this disclosure uses an insulating black matrix to directly contact and cover the touch lines and touch leads of the touch electrodes, thus saving the need for a TOC film layer and reducing production costs. Furthermore, this disclosure sets the edge of the black matrix in the second non-display area to terminate inside the first barrier wall closest to the display area, preventing the black matrix from crossing the first barrier wall in the second non-display area. This avoids the accumulation of the black matrix between the first and second barrier walls due to the high step difference. Accumulated black matrix is ​​difficult to fully expose during exposure and prone to peeling during development, affecting the performance of the touch display panel. Therefore, this disclosure prevents the black matrix from crossing the first barrier wall in the second non-display area.

[0126] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0127] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

Claims

1. A touch display panel, wherein, include: A display panel includes a display area and a non-display area surrounding the display area. The display area includes a plurality of sub-pixel areas and a spacing area that separates the plurality of sub-pixel areas from each other. The non-display area includes a binding area located on one side of the display area and a blocking area located between the display area and the binding area and surrounding the display area. The blocking area includes at least one barrier wall surrounding the display area. The non-display area is divided into a first non-display area including the binding area and a second non-display area excluding the first non-display area. A touch panel is located on the light-emitting side of the display panel. The touch panel includes touch electrodes located in the display area and touch leads electrically connected to the touch electrodes. The touch electrodes include multiple touch lines, and the touch leads extend from the display area to the bonding area. An insulating black matrix is ​​located on the side of the touch panel opposite to the display panel. The orthographic projection of the portion of the black matrix in the display area onto the display panel is located in the interval area. The black matrix directly contacts and covers the touch line and at least part of the touch lead. The edge of the black matrix in the second non-display area terminates at the inner side of the barrier closest to the display area. 2.The touch display panel of claim 1, wherein, The touch panel also includes a touch insulating layer located between the touch electrodes and the display panel, and the black matrix wraps around the touch lines and the touch leads and is in contact with the touch insulating layer. 3.The touch display panel of claim 2, wherein, The distance between one edge of the black matrix and the one edge of the adjacent touch line is greater than 2.5 μm. 4.The touch display panel of any one of claims 1-3, wherein, The black matrix covers all the touch leads located in the second non-display area. 5.The touch display panel of claim 4, wherein, The black matrix also covers the gap between adjacent touch leads located in the second non-display area. 6.The touch display panel of any one of claims 1-5, wherein, The portion of the blocking area located in the first non-display area is the first blocking area, and the black matrix covers all the touch leads located in the first blocking area. 7.The touch display panel of claim 6, wherein, The black matrix also covers the gap between adjacent touch leads located in the first blocking area. 8.The touch display panel of claim 6 or 7, wherein, The display panel includes: a driving backplate, a light-emitting device layer located between the driving backplate and the touch panel, and an encapsulation layer located between the light-emitting device layer and the touch panel; the encapsulation layer includes an organic material layer, the edge of which terminates at the inner side of the barrier closest to the display area; The touch display panel also includes a raised portion located between the encapsulation layer and the touch panel. The raised portion is made of an organic material, and the orthographic projection of the raised portion on the display panel covers the orthographic projection of the first blocking area on the display panel. 9.The touch display panel of claim 8, wherein, The bonding area includes multiple bonding pads, each bonding pad including at least a first conductive portion and a second conductive portion stacked on top of each other. The second conductive portion is located above the first conductive portion. The second conductive portion and the touch lead are disposed on the same layer and electrically connected. The black matrix is ​​located at the edge of the first non-display area and ends at the side of the first conductive portion near the display area. 10.The touch display panel of claim 9, wherein, The driving backplane includes: a substrate, at least one source / drain metal layer located between the substrate and the light-emitting device layer, and at least one planarization layer located between the source / drain metal layer closest to the substrate and the light-emitting device layer. The first conductive portion is disposed in the same layer as the source / drain metal layer furthest from the substrate. The planarization layer located between the source / drain metal layer furthest from the substrate and the light-emitting device layer is a third planarization layer. The third planarization layer includes a first portion that orthographically covers the plurality of bonding pads and part of the touch leads, and a second portion other than the first portion. The first portion exposes the middle region of each of the first conductive portions. The thickness of the first portion is a first thickness, and the thickness of the second portion is a second thickness. The first thickness is less than the second thickness. 11.The touch display panel of claim 10, wherein, The black matrix is ​​located at the edge of the first non-display area and ends within the second part. 12.The touch display panel of claim 11, wherein, The width of the touch lead is greater than 3.2 μm. 13.The touch display panel of claim 11, wherein, The touch lead includes a first lead and a second lead that are electrically connected. The first lead extends from the display area to the interior of the black matrix located in the first non-display area, and the second lead extends from the interior of the black matrix located in the first non-display area to be electrically connected to the second conductive portion; wherein... The width of the second lead is greater than the width of the first lead. 14.The touch display panel of claim 13, wherein, The width of the area covered by the black matrix of the second lead gradually increases along the extension direction of the second lead and in the direction from the display area to the bonding area. The width of the area of ​​the second lead not covered by the black matrix is ​​the same as the width of the second conductive part.

15. The touch display panel as claimed in claim 14, wherein, The area of ​​the second lead covered by the black matrix has a length greater than 2 μm along the extension direction of the second lead.

16. The touch display panel as claimed in any one of claims 13-15, wherein, The width of the first lead is less than 3.2 μm, and the width of the second lead is greater than 3.2 μm and less than or equal to the width of the second conductive part.

17. The touch display panel as claimed in claim 10, wherein, The black matrix is ​​located at the edge of the first non-display area and ends within the first portion.

18. The touch display panel as claimed in claim 17, wherein, The width of the touch lead is less than 3.2 μm. The distance between the edge of the second conductive part near the display area and the edge of the first conductive part near the display area is a first distance. The distance between the edge of the second conductive part away from the display area and the edge of the first conductive part away from the display area is a second distance. The first distance is greater than the second distance. The black matrix is ​​located at the edge of the first non-display area, ending within the first portion corresponding to the first distance.

19. The touch display panel as claimed in claim 18, wherein, The difference between the first distance and the second distance is greater than 2 μm.

20. The touch display panel as claimed in any one of claims 1-19, wherein, The black matrix also covers the gap between adjacent touch leads in the bonding area.

21. The touch display panel as described in any one of claims 1-20, wherein, The black matrix is ​​enclosed by multiple openings corresponding to the sub-pixel regions; The touch display panel further includes: a color filter structure located within the opening, and a protective layer located on the side of the color filter structure facing away from the display panel.

22. The touch display panel as claimed in claim 21, wherein, The protective layer includes: a first protective layer disposed near the color filter structure, and a second protective layer located on the side of the first protective layer facing away from the display panel; the surface of the side of the first protective layer facing away from the display panel is uneven.

23. The touch display panel as claimed in claim 22, wherein, The thickness of the first protective layer is greater than the thickness of the second protective layer.

24. The touch display panel as described in any one of claims 1-23, wherein, The black matrix is ​​an infrared-transmitting structure, and black organic polymer materials are doped within the black matrix.

25. The touch display panel as claimed in claim 2, wherein, The touch electrode includes a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction, wherein the first direction intersects the second direction; The first touch electrode includes a plurality of first electrode blocks arranged along the second direction, and two adjacent first electrode blocks are electrically connected through a first connecting portion. The second touch electrode includes a plurality of second electrode blocks arranged along the first direction, and two adjacent second electrode blocks are electrically connected through a second connecting portion. The first electrode block, the second electrode block, and the first connecting portion are disposed in the same layer, and the second connecting portion is located on the side of the touch insulating layer opposite to the first electrode block; The first electrode block, the second electrode block, the first connecting part, and the second connecting part are each a grid-like structure formed by the touch lines.

26. A display device, wherein, Includes the touch display panel as described in any one of claims 1-25.

Images