Touch display panel and display device

Abstract

The embodiment of the utility model discloses a touch control display panel and a display device, the touch control display panel comprises a touch control function area and a bonding area, the bonding area is provided with a bonding pad, the touch control display panel further comprises a display panel, a touch control layer, a flexible circuit board and a first insulating layer, the touch control layer is located on one side of the display panel, the touch control layer comprises a touch control electrode and a touch control connecting line, and the touch control electrode is located on one side of the display panel. The touch electrode is connected with the bonding pad through the touch connecting line, the flexible circuit board is connected with the bonding pad, and the touch electrode is located in the touch function area; the first insulating layer is located on the side, away from the display panel, of the touch control layer and extends to the bonding area from the touch control function area, and at least part of the first insulating layer surrounds the bonding pad in the bonding area. According to the technical scheme provided by the embodiment of the utility model, the corrosion resistance of the bonding pad can be improved.

Description

Technical Field

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

[0002] With the development of display technology, touch panels (TP) have been used in more and more electronic products.

[0003] For on-cell touch display panels, the touch layer needs to be attached to the display panel and connected to a flexible circuit board (PCB) to provide touch signals. In related technologies, the pads used to bond the PCB are prone to corrosion, reducing the reliability of the touch function. Utility Model Content

[0004] This utility model provides a touch display panel and display device to improve the corrosion resistance of bonding pads.

[0005] According to one aspect of the present invention, a touch display panel is provided, including a touch function area and a bonding area, wherein the bonding area is provided with bonding pads, and the touch display panel further includes:

[0006] Display panel;

[0007] The touch layer and flexible circuit board are provided. The touch layer is located on one side of the display panel. The touch layer includes touch electrodes and touch connection lines. The touch electrodes are connected to the bonding pads through the touch connection lines. The flexible circuit board is connected to the bonding pads. The touch electrodes are located in the touch functional area.

[0008] A first insulating layer is located on the side of the touch layer away from the display panel and extends from the touch functional area to the bonding area, wherein the first insulating layer is at least partially disposed around the bonding pad in the bonding area.

[0009] Optionally, a plurality of the bonding pads are arranged along a first direction, and the bonding pads include a first conductive layer and a second conductive layer extending along a second direction, wherein the first conductive layer and the second conductive layer are in contact in the bonding area; the first direction and the second direction intersect.

[0010] The touch display panel further includes a second insulating layer, which is located between the first conductive layer and the second conductive layer, and the first insulating layer is located on the side of the second conductive layer away from the display panel.

[0011] Optionally, the second insulating layer extends to the contact position between the first conductive layer and the second conductive layer, and in the bonding area, the first insulating layer is provided with a plurality of first openings, the first openings exposing the second conductive layer;

[0012] A conductive adhesive layer is provided on the side of the first insulating layer away from the display panel, and the flexible circuit board is connected to the second conductive layer through the conductive adhesive layer.

[0013] Optionally, the size of the first opening is between 40µm and 60µm in the direction perpendicular to the thickness of the display panel;

[0014] In the direction of the thickness of the display panel, the depth of the first opening is 0.5um ± 0.1um.

[0015] Optionally, the spacing between adjacent first openings is 10um-20um.

[0016] Optionally, the second insulating layer extends to the bonding region, wherein the first insulating layer has a plurality of first openings and the second insulating layer has a plurality of second openings, the second openings exposing the first conductive layer;

[0017] The first opening and the second opening are interconnected. A conductive adhesive layer is provided on the side of the first insulating layer away from the display panel. The flexible circuit board is connected to the second conductive layer through the conductive adhesive layer.

[0018] Optionally, in the bonding area, the first insulating layer has a patterned structure in the contact area with the second conductive layer, and the orthographic projection of the patterned structure on the display panel covers the portion of the orthographic projection of the second conductive layer on the display panel. The flexible circuit board is connected to the second conductive layer not covered by the first insulating layer through a conductive adhesive layer.

[0019] Optionally, the patterned structure is serrated or wavy.

[0020] Optionally, the display panel includes a substrate, an array substrate, and a color filter substrate, wherein the array substrate is located between the substrate and the color filter substrate;

[0021] A polarizer is also disposed on the side of the color filter substrate away from the substrate. The touch layer is located on the side of the polarizer away from the substrate. The bonding pad is located on the side of the color filter substrate away from the substrate. The orthographic projection of the flexible circuit board on the substrate does not overlap with the orthographic projection of the polarizer on the substrate. A first colloid is disposed on the side of the flexible circuit board near the touch functional area. The orthographic projection of the first colloid on the substrate overlaps with the orthographic projection of the flexible circuit board on the substrate.

[0022] A second adhesive is also provided between the flexible circuit board and the array substrate. The second adhesive is used to bond the flexible circuit board and the array substrate. On the side near the bonding pad, the edge of the orthogonal projection of the second adhesive on the substrate coincides with the edge of the orthogonal projection of the color filter substrate on the substrate.

[0023] According to another aspect of the present invention, a display device is provided, which includes a touch display panel provided in any embodiment of the present invention.

[0024] The technical solution provided by this utility model embodiment includes a first insulating layer on the side of the touch layer away from the display panel. The first insulating layer extends from the touch functional area to the bonding area, so that at least a portion of the first insulating layer can surround the bonding pad. The first insulating layer can act as a barrier to isolate the bonding pad from the external environment, thereby preventing water vapor, oxygen and other corrosive gases in the air from directly contacting the bonding pad, thus avoiding corrosion of the bonding pad and improving the corrosion resistance of the bonding pad.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the planar structure of a touch display panel provided for an embodiment of this utility model;

[0028] Figure 2 A cross-sectional structural diagram of a touch display panel provided for an embodiment of this utility model;

[0029] Figure 3 A schematic diagram of another planar structure of a touch display panel provided in an embodiment of this utility model;

[0030] Figure 4 A cross-sectional structural diagram of another touch display panel provided in an embodiment of this utility model;

[0031] Figure 5 A schematic diagram of the planar structure of a bonding region provided for an embodiment of this utility model;

[0032] Figure 6 A schematic diagram of another planar structure of the bonding region provided in this embodiment of the present utility model;

[0033] Figure 7 A cross-sectional structural diagram of a bonding region provided for an embodiment of this utility model;

[0034] Figure 8 A cross-sectional structural schematic diagram of another bonding region provided in an embodiment of this utility model;

[0035] Figure 9 A schematic diagram of another planar structure of a touch display panel provided in an embodiment of this utility model;

[0036] Figure 10 for Figure 9 A magnified view of a portion of the structure shown;

[0037] Figure 11 A cross-sectional structural diagram of another touch display panel provided in an embodiment of this utility model;

[0038] in:

[0039] TPA - Touch Function Area; CIA - Bonding Area;

[0040] 10-Display panel; 110-Substrate; 101-Array substrate; 102-Color filter substrate; 103-Polarizer;

[0041] 301 - Touch electrode; 302 - Touch connection line; 31 - First touch connection line; 32 - Second touch connection line;

[0042] 40 - First insulating layer; 401 - Patterned structure; 50 - Bonding pad; 60 - Second insulating layer; 501 - First conductive layer; 502 - Second conductive layer; 70 - Conductive adhesive layer; 80 - Flexible circuit board; 91 - First colloid; 92 - Second colloid. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Figure 1 A schematic diagram of a planar structure of a touch display panel provided for an embodiment of this utility model (flexible circuit board not shown in the figure), referenced. Figure 1 The touch display panel provided in this embodiment includes a touch function area TPA and a bonding area CIA. The bonding area CIA is provided with bonding pads 50. The touch display panel also includes:

[0046] Display panel 10;

[0047] The touch layer and flexible circuit board are located on one side of the display panel 10. The touch layer includes touch electrodes 301 and touch connection lines 302. The touch electrodes 301 are connected to the bonding pads 50 through the touch connection lines 302. The flexible circuit board is connected to the bonding pads 50. The touch electrodes 301 are located in the touch functional area TPA.

[0048] A first insulating layer 40 is located on the side of the touch layer away from the display panel 10 and extends from the touch functional area TPA to the bonding area CIA. In the bonding area CIA, the first insulating layer 40 is disposed at least partially around the bonding pad 50.

[0049] Specifically, the touch layer is externally attached to the display panel 10, and a touch chip is disposed on the flexible circuit board. The touch layer is bonded to the flexible circuit board via bonding pads 50, thereby realizing the connection between the touch chip and the touch layer. The touch layer includes a touch electrode 301 and a touch connection line 302. One end of the touch connection line 302 is connected to the touch electrode 301, and the other end is connected to the bonding pads 50. Touch signals are transmitted to the touch electrode 301 through the touch connection line 302.

[0050] In this embodiment, a first insulating layer 40 is provided on the side of the touch layer away from the display panel 10. The first insulating layer 40 extends from the touch functional area TPA to the bonding area CIA, so that at least a portion of the first insulating layer 40 can be disposed around the bonding pad 50. The first insulating layer 40 can act as a barrier to isolate the bonding pad 50 from the external environment, thereby preventing moisture, oxygen and other corrosive gases in the air from directly contacting the bonding pad 50, thus avoiding corrosion of the bonding pad 50 and improving the corrosion resistance of the bonding pad 50.

[0051] Figure 2 This is a cross-sectional structural diagram of a touch display panel provided in an embodiment of the present invention, specifically... Figure 1 The cross-sectional structure of the touch display panel obtained along the cutting line AA', reference Figure 1 and Figure 2 Optionally, a plurality of bonding pads 50 are arranged along a first direction X. Each bonding pad 50 includes a first conductive layer 501 and a second conductive layer 502 extending along a second direction Y, wherein the first direction X intersects the second direction Y, for example, they intersect perpendicularly. In the bonding area CIA, the first conductive layer 501 and the second conductive layer 502 are contacted and connected.

[0052] Specifically, the touch electrodes include a first touch electrode and a second touch electrode, which together form a mesh. One of the first and second touch electrodes is a touch driving electrode, and the other is a touch sensing electrode. The touch connection line 302 includes a first connection line 31 and a second connection line 32. The first touch electrode is connected to the bonding pad 50 through the first connection line 31, and the second touch electrode is connected to the bonding pad 50 through the second connection line 32. The specific touch principle can be found in the description in related technologies, and will not be repeated in this embodiment.

[0053] In this design, the first conductive layer 501 is disposed on the same layer as the first connecting line 31, and the second conductive layer 502 is disposed on the same layer as the second connecting line 32. Each bonding pad 50 is formed by the first conductive layer 501 and the second conductive layer 502. In the bonding area CIA, the first conductive layer 501 and the second conductive layer 502 are shorted together. Even if the second conductive layer 502 has defects, the touch signal can still be transmitted through the underlying first conductive layer 501, which helps to improve the reliability of the touch signal. Here, the first conductive layer 501 in the bonding pad 50 corresponding to the first connecting line 31 is connected to the first connecting line 31, and there is no electrical connection between the second conductive layer 502 and the second connecting line 32. For example, the first conductive layer 501 is formed by extending from the first connecting line 31, and the second conductive layer 502 is insulated from the second connecting line 32. The second conductive layer 502 in the bonding pad 50 corresponding to the second connecting line 32 is connected to the second connecting line 32. The first conductive layer 501 and the first connecting line 31 are not electrically connected. For example, the first conductive layer 501 and the first connecting line 31 are mutually insulated. The second conductive layer 502 is formed by extending from the second connecting line 32.

[0054] In this embodiment, the touch display panel further includes a second insulating layer 60, which is located between the first conductive layer 501 and the second conductive layer 502. The first insulating layer 60 is located on the side of the second conductive layer 502 away from the display panel 10, and is used to isolate the first conductive layer 501 and the second conductive layer 502. The second insulating layer 60 extends to the contact position between the first conductive layer 501 and the second conductive layer 502.

[0055] Figure 3 This is a schematic diagram of another planar structure of a touch display panel provided in an embodiment of the present invention, specifically a partial structural schematic diagram of the bonding pad 50, in conjunction with... Figure 2 and Figure 3 In one optional embodiment provided in this example, in the bonding area CIA, a plurality of first openings K1 are provided on the first insulating layer 40, and the first openings K1 expose the second conductive layer 502; a conductive adhesive layer 70 is provided on the side of the first insulating layer 40 away from the display panel 10, and the flexible circuit board 80 is connected to the second conductive layer 502 through the conductive adhesive layer 70.

[0056] The conductive adhesive layer 70 may include anisotropic conductive adhesive, and the conductive particles in the anisotropic conductive adhesive enable the electrical connection between the flexible circuit board 80 and the second conductive layer 502.

[0057] The technical solution provided in this embodiment covers the bonding area CIA with a first insulating layer 40 and drills a hole at the location of the bonding area CIA, so that the first opening K1 penetrates the first insulating layer 40. The opening location is connected to the flexible circuit board 80 and the second conductive layer 502 through the conductive adhesive layer 70. The conductive adhesive layer 70 can also isolate water vapor, oxygen and other corrosive gases in the external environment. At the same time, since the second conductive layer 502 at the un-drilled location is covered by the first insulating layer 40, the bonding pad 50 can be prevented from being corroded, which is beneficial to improving the corrosion resistance of the bonding pad 50.

[0058] Optionally, in the direction perpendicular to the thickness of the display panel 10 (the direction of the thickness of the display panel 10 is the Z direction), the size of the first opening K1 in the first insulating layer 40 is between 40um and 60um, and the spacing between adjacent first openings K1 is between 10um and 20um, so as to ensure good contact between the conductive particles (with a diameter between 5um and 10um) in the conductive adhesive layer 70 and the second conductive layer 502.

[0059] Optionally, in the non-bonding area, the thickness of the first insulating layer 40 is approximately 2.6 μm, while in the bonding area CIA, the thickness of the first insulating layer 40 is reduced to approximately 0.5 μm. That is, in the thickness direction of the display panel 10, the depth of the first opening K1 is approximately 0.5 μm, for example, 0.5 μm ± 0.1 μm. This can improve the bonding accuracy between the flexible circuit board 80 and the bonding pad 50 without reducing the water and oxygen barrier performance of the first insulating layer 40, and reduce gaps or unevenness caused by excessive thickness of the first insulating layer 40, thereby improving the overall performance and reliability of the touch display panel. Furthermore, it can also improve the flexibility of the bonding area CIA, giving it better flexibility and bendability.

[0060] Optionally, both the first insulating layer 40 and the second insulating layer 60 can be made of photoresist (OC photoresist).

[0061] Figure 4 This is a cross-sectional structural diagram of another touch display panel provided in an embodiment of the present invention, with reference to... Figure 4 Optionally, in this embodiment, the second insulating layer 60 extends to the bonding region CIA. In the bonding region CIA, the second insulating layer 60 is provided with a plurality of second openings K2, and the second openings K2 expose the first conductive layer 501; wherein the first openings K1 and the second openings K2 are interconnected.

[0062] When fabricating the second conductive layer 502, the second conductive layer 502 can be deposited into the second opening K2, realizing the connection between the first conductive layer 501 and the second conductive layer 502. The flexible circuit board 80 is connected to the second conductive layer 502 through the conductive adhesive layer 70. Compared with the technical solutions in the above embodiments that only have the first opening K1, Figure 4 The scheme shown allows the first insulating layer 501 and the second insulating layer 502 to share the same mask, thereby reducing one photomask process and improving the corrosion resistance of the bonding pad 50 while reducing manufacturing costs.

[0063] Optionally, the shapes of the first opening K1 and the second opening K2 can be rectangular, circular, polygonal, etc., and this embodiment does not limit them.

[0064] Figure 5 This is a schematic diagram of the planar structure of a bonding region provided in an embodiment of the present invention. Figure 6 A schematic diagram of another planar structure of the bonding region provided in an embodiment of this utility model. Figure 7 This is a schematic cross-sectional view of a bonding region provided in an embodiment of the present invention. Figure 8 This is a schematic cross-sectional view of another bonding region provided in an embodiment of the present invention, wherein... Figure 7 Specifically Figure 5 The cross-sectional structure obtained along the cutting line BB' shown. Figure 8 Specifically Figure 6 The cross-sectional structure shown is obtained along the cutting line CC'. Combined with... Figure 1 ,refer to Figures 5-8 In another optional embodiment provided by this utility model, in the bonding area CIA, the first insulating layer 40 has a patterned structure 401 in the contact area with the second conductive layer 502. The orthographic projection of the patterned structure 401 on the display panel 10 covers the portion of the orthographic projection of the second conductive layer 502 on the display panel 10. The flexible circuit board 50 is connected to the second conductive layer 502, which is not covered by the first insulating layer 40, through the conductive adhesive layer 70.

[0065] The patterned structure 401 is serrated or wavy. The serrated or wavy first insulating layer 40 has a concave and convex surface. On the concave surface, the first insulating layer 40 can expose part of the second conductive layer 502 so that the flexible circuit board 80 can be connected to the second conductive layer 502. On the convex surface, the first insulating layer 40 can cover the second conductive layer 502 below it, which can prevent external water and oxygen from entering, thereby improving the corrosion resistance of the bonding pad 50.

[0066] Figure 9 This is a schematic diagram of another planar structure of a touch display panel provided in an embodiment of the present invention, specifically the structure after bonding the flexible circuit board 80. Figure 10 for Figure 9 A partially enlarged schematic diagram of the structure shown is as follows: Figure 9 The enlarged structure within the dashed box shown. Figure 11 This is a cross-sectional structural diagram of another touch display panel provided in an embodiment of the present invention, specifically... Figure 10 The cross-sectional structure shown is obtained along the cutting line DD', for reference. Figure 9 , Figure 10 and Figure 11 Based on the above embodiments, optionally, the display panel 10 includes a substrate 110, an array substrate 101, and a color filter substrate 102, with the array substrate 101 located between the substrate 110 and the color filter substrate 102; a polarizer 103 is also disposed on the side of the color filter substrate 102 away from the substrate 110, the touch layer is located on the side of the polarizer 103 away from the substrate 110, the bonding pad 50 is located on the side of the color filter substrate 102 away from the substrate 110, and the orthographic projection of the flexible circuit board 80 on the substrate 110 does not overlap with the orthographic projection of the polarizer 103 on the substrate 110; a first adhesive 91 is disposed on the side of the flexible circuit board 80 near the touch function area, and the orthographic projection of the first adhesive 91 on the substrate partially overlaps with the orthographic projection of the flexible circuit board 80 on the substrate 110, that is, the first adhesive 91 can cover the edge where the flexible circuit board 80 is connected to the bonding pad 50.

[0067] Optionally, the first colloid 91 is a waterproof insulating adhesive, which can be formed by coating. The orthogonal projection of the first colloid 91 on the substrate 110 can cover the orthogonal projection of the bonding pad 50 on the substrate 110, thereby enhancing the waterproof performance of the bonding pad 50.

[0068] The technical solution provided in this embodiment can enhance the peel force of the flexible circuit board 80 and prevent the flexible circuit board 80 from falling off by applying a first colloid 91 to the side where the flexible circuit board 80 is connected to the bonding pad 50.

[0069] Continue to refer to Figures 9-11 A second adhesive 92 is also provided between the flexible circuit board 80 and the array substrate 101. The second adhesive 92 is used to bond the flexible circuit board 80 and the array substrate 101.

[0070] On the side near the bonding pad 50, the edge of the orthographic projection of the second adhesive 92 onto the substrate 110 coincides with the edge of the orthographic projection of the color filter substrate 102 onto the substrate 110. The second adhesive 92 can be a waterproof double-sided adhesive.

[0071] The technical solution provided in this embodiment, by applying a first adhesive 91 to the bonding area between the flexible circuit board 80 and the bonding pad 50, and attaching a second adhesive 92 under the flexible circuit board 80, not only enhances the waterproof and corrosion-resistant performance, but also greatly enhances the peel force of the flexible circuit board 80, thereby improving the reliability of the touch display panel.

[0072] Alternatively, a polarizer may also be provided on the side of the array substrate 101 near the substrate 110.

[0073] Optionally, this utility model embodiment also provides a display device, which includes the touch display panel provided in any embodiment of this utility model. Therefore, the display device also has the beneficial effects described in any of the above embodiments.

[0074] It should be understood that the various forms of the process shown above can be used to rearrange, add, or delete steps. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0075] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A touch display panel, comprising a touch function area and a bonding area, the bonding area is provided with a bonding pad, characterized in that, The touch display panel also includes: Display panel; The touch layer and flexible circuit board are provided. The touch layer is located on one side of the display panel. The touch layer includes touch electrodes and touch connection lines. The touch electrodes are connected to the bonding pads through the touch connection lines. The flexible circuit board is connected to the bonding pads. The touch electrodes are located in the touch functional area. A first insulating layer is located on the side of the touch layer away from the display panel and extends from the touch functional area to the bonding area, wherein the first insulating layer is at least partially disposed around the bonding pad in the bonding area. 2.The touch display panel of claim 1, wherein, Multiple bonding pads are arranged along a first direction, each bonding pad including a first conductive layer and a second conductive layer extending along a second direction, wherein the first conductive layer and the second conductive layer are in contact in the bonding area; the first direction and the second direction intersect. The touch display panel further includes a second insulating layer, which is located between the first conductive layer and the second conductive layer, and the first insulating layer is located on the side of the second conductive layer away from the display panel. 3.The touch display panel of claim 2, wherein, The second insulating layer extends to the contact position between the first conductive layer and the second conductive layer. In the bonding area, the first insulating layer is provided with a plurality of first openings, the first openings exposing the second conductive layer. A conductive adhesive layer is provided on the side of the first insulating layer away from the display panel, and the flexible circuit board is connected to the second conductive layer through the conductive adhesive layer. 4.The touch display panel of claim 3, wherein, In the direction perpendicular to the thickness of the display panel, the size of the first opening is between 40um and 60um; In the direction of the thickness of the display panel, the depth of the first opening is 0.5um ± 0.1um. 5.The touch display panel of claim 3, wherein, The spacing between adjacent first openings is 10um-20um. 6.The touch display panel of claim 2, wherein, The second insulating layer extends to the bonding region, where the first insulating layer has a plurality of first openings and the second insulating layer has a plurality of second openings, the second openings exposing the first conductive layer; The first opening and the second opening are interconnected. A conductive adhesive layer is provided on the side of the first insulating layer away from the display panel. The flexible circuit board is connected to the second conductive layer through the conductive adhesive layer. 7.The touch display panel of claim 2, wherein, In the bonding area, the first insulating layer has a patterned structure in the contact area with the second conductive layer. The orthographic projection of the patterned structure on the display panel covers the portion of the orthographic projection of the second conductive layer on the display panel. The flexible circuit board is connected to the second conductive layer not covered by the first insulating layer through a conductive adhesive layer. 8.The touch display panel of claim 7, wherein, The patterned structure is serrated or wavy. 9.The touch display panel of claim 1, wherein, The display panel includes a substrate, an array substrate, and a color filter substrate, wherein the array substrate is located between the substrate and the color filter substrate; A polarizer is also disposed on the side of the color filter substrate away from the substrate. The touch layer is located on the side of the polarizer away from the substrate. The bonding pad is located on the side of the color filter substrate away from the substrate. The orthographic projection of the flexible circuit board on the substrate does not overlap with the orthographic projection of the polarizer on the substrate. A first colloid is disposed on the side of the flexible circuit board near the touch functional area. The orthographic projection of the first colloid on the substrate overlaps with the orthographic projection of the flexible circuit board on the substrate. A second adhesive is also provided between the flexible circuit board and the array substrate. The second adhesive is used to bond the flexible circuit board and the array substrate. On the side near the bonding pad, the edge of the orthogonal projection of the second adhesive on the substrate coincides with the edge of the orthogonal projection of the color filter substrate on the substrate.

10. A display device, characterized by comprising: Includes the touch display panel as described in any one of claims 1-9.

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