Touch panel and display device

Abstract

The application provides a touch panel and a display device. The touch panel comprises a touch area and a lead area; the touch panel comprises a substrate, a wiring layer on the substrate and located in the lead area, a first insulating layer on a side of the wiring layer away from the substrate and located in the lead area, and an electrode layer on the substrate and located in the touch area; wherein the substrate is located in the touch area and the lead area; the wiring layer comprises a plurality of wirings and a plurality of overlapping portions connected to the wirings respectively, the overlapping portions are closer to the touch area than the wirings; the electrode layer comprises a plurality of touch electrodes, the touch electrodes comprise an overlapping electrode adjacent to the lead area; and the first insulating layer exposes one end of the overlapping portion close to the touch area on the wiring layer, the overlapping electrode extends to a side of the overlapping portion away from the substrate in the lead area, and the overlapping electrode overlaps with the one end of the overlapping portion close to the touch area. Through the scheme, the touch electrodes and the wirings in the lead area can be prevented from being poorly overlapped, and the touch performance is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a touch panel and a display device, and belongs to the technical field of display. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) has a series of advantages such as self-luminous, wide viewing angle, light, thin, high brightness, low power consumption and fast response, therefore, OLED display device becomes a very popular display device at home and abroad, and has a broad application prospect.

[0003] In the OLED display device, after a touch panel is arranged on the light-emitting side of the display panel, the touch panel has a touch function. In the touch panel, the touch electrodes in the touch area are led out to the lead area by metal traces so as to be connected with the touch chip. At present, the metal traces and the touch electrodes are connected by lapping, and a certain lapping area is needed to ensure effective conduction, however, in practice, the lapping problem is prone to occur due to process reasons. SUMMARY

[0004] The present application provides a touch panel and a display device to solve the problem of poor lapping between the touch electrodes and the metal traces in the touch panel.

[0005] In a first aspect, an embodiment of the present application provides a touch panel, which comprises a touch area and a lead area located on at least one side of the touch area; the touch panel comprises:

[0006] a substrate; the substrate is located on the touch area and the lead area;

[0007] a trace layer; the trace layer is located on the substrate and located on the lead area, the trace layer comprises a plurality of traces and a lapping part connected with each of the traces, the lapping part is closer to the touch area than the trace connected therewith;

[0008] a first insulating layer; the first insulating layer is located on the side of the trace layer away from the substrate and located on the lead area, and the first insulating layer exposes one end of the lapping part close to the touch area; and

[0009] an electrode layer; the electrode layer is located on the substrate and located on the touch area, the electrode layer comprises a plurality of touch electrodes, the plurality of touch electrodes comprises a lapping electrode adjacent to the lead area, the lapping electrode extends to the side of the lapping part away from the substrate towards the lead area, and the lapping electrode lapped with one end of the lapping part close to the touch area.

[0010] Based on the above touch panel, optionally, the lap joint electrode further extends to a side of the first insulating layer away from the trace layer and is lap jointed with the first insulating layer.

[0011] Based on the above touch panel, optionally, in a first direction, a width of the lap joint area of the lap joint electrode and the first insulating layer is greater than or equal to 5 μm, and in a second direction, a width of the lap joint area of the lap joint electrode and the first insulating layer is greater than or equal to 1 μm; wherein the first direction is parallel to a boundary surface between the touch area and the lead area, and the second direction is perpendicular to the first direction and parallel to a plane in which the substrate is located.

[0012] Based on the above touch panel, optionally, the lap joint part is a strip structure extending in a first direction; and the first direction is parallel to a boundary surface between the touch area and the lead area.

[0013] Based on the above touch panel, optionally, further comprising:

[0014] A protective layer is located at a side of the first insulating layer away from the trace layer, and a projection of the protective layer on a plane in which the trace layer is located covers each of the traces.

[0015] Based on the above touch panel, optionally, a material of the protective layer is the same as a material of the electrode layer.

[0016] Preferably, the material of the protective layer and the material of the electrode layer are both ITO.

[0017] Based on the above touch panel, optionally, the protective layer and the electrode layer are provided in the same layer and are not connected.

[0018] Based on the above touch panel, optionally, the protective layer comprises a plurality of strip protective structures, and adjacent strip protective structures are provided in a spaced manner; and a projection of each strip protective structure on a plane in which the trace layer is located covers one of the traces.

[0019] Based on the above touch panel, optionally, a width of the strip protective structure is greater than a width of the trace covered by the strip protective structure; the width of the trace is a size of the trace in a direction perpendicular to an extending direction of the trace; and the width of the strip protective structure is a size of the strip protective structure in a direction perpendicular to an extending direction of the strip protective structure.

[0020] In a second aspect, an embodiment of the present application further provides a display device comprising the touch panel according to any one of the first aspect.

[0021] The application provides a touch panel and a display device. The touch panel comprises a touch area and a lead area located at at least one side of the touch area. The touch panel comprises a substrate, a wire layer located on the substrate and located in the lead area, a first insulating layer located on a side of the wire layer away from the substrate and located in the lead area, and an electrode layer located on the substrate and located in the touch area. The substrate is located in the touch area and the lead area. The wire layer comprises a plurality of wires and a plurality of overlapping parts connected to the wires respectively. The overlapping parts are closer to the touch area than the wires. The electrode layer comprises a plurality of touch electrodes, and the plurality of touch electrodes comprises an overlapping electrode adjacent to the lead area. The first insulating layer exposes one end of the overlapping part close to the touch area in the wire layer. The overlapping electrode extends to a side of the overlapping part away from the substrate in the lead area and overlaps with the one end of the overlapping part close to the touch area. In this way, the overlapping electrode can be easily and widely overlapped with the one end of the overlapping part close to the touch area due to the first insulating layer exposing the one end of the overlapping part close to the touch area in the touch panel. The problem of poor overlapping can be effectively avoided. In addition, the impedance of the touch channel can be reduced, and the touch performance can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. In addition, the drawings and description are not intended to limit the scope of the present inventive concepts in any way.

[0023] Figure 1 It is a top view of a schematic diagram of an existing touch panel;

[0024] Figure 2 It is a schematic diagram of a cross-sectional structure of an existing touch electrode and wire overlapping part;

[0025] Figure 3 It is a schematic diagram of a cross-sectional structure of an existing touch electrode and wire overlapping part in an abnormal overlapping condition;

[0026] Figure 4 It is a schematic diagram of a cross-sectional structure of an overlapping part of a touch panel provided in an embodiment of the application;

[0027] Figure 5 It is a top view of a forming process of a film layer of an overlapping part provided in an embodiment of the application;

[0028] Figure 6 It is a schematic diagram of a cross-sectional structure of an overlapping part of a touch panel provided in another embodiment of the application;

[0029] Figure 7 It is a schematic diagram of a cross-sectional structure of an overlapping part of a touch panel provided in another embodiment of the application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 1a - touch area; 1b - lead area; 10 - substrate; 11 - trace; 11a - overlap part; 12 - first insulating layer; 13 - touch electrode; 13a - overlap electrode; 14 - second insulating layer; 15 - touch chip; 16 - protection layer; 16a - strip-shaped protection structure. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0033] REFERENCE Figure 1 , Figure 1 is a schematic view of a top structure of an existing touch panel. As shown in Figure 1 , the touch panel includes a touch area 1a and a lead area 1b located at least one side of the touch area 1a. The touch area 1a includes a plurality of horizontal channels and a plurality of vertical channels, each horizontal channel includes a plurality of first touch electrodes connected in series by a connecting bridge, and each vertical channel includes a plurality of second touch electrodes connected in series by a connecting bridge. Each horizontal channel and each vertical channel are led out to the lead area 1b through the touch electrodes close to the lead area, and then connected to the touch chip 15 through the traces 11 of the lead area 1b, and the touch signals obtained by the touch chip 15 are processed.

[0034] Among them, the touch electrode 13 and the trace 11 are connected in series through the overlap. Referring to Figure 2 , Figure 2 is a schematic view of a cross-sectional structure of an overlap between an existing touch electrode and a trace, Figure 2 the cross-sectional position of Figure 1 is AA'. As shown in Figure 2 , in the structure, the lowermost layer is the substrate 10, the substrate 10 of the lead area 1b is provided with the trace 11, the trace 11 is covered with the first insulating layer 12 extending to the touch area 1a, the touch electrode 13 is provided on the upper side of the first insulating layer 12 of the touch area 1a, the touch electrode 13 extends to the lead area 1b and is connected with the trace 11 on the lower side of the first insulating layer 12 through the via hole penetrating the first insulating layer 12, to realize the electrical connection between the touch electrode 13 and the trace 11. In addition, the second insulating layer 14 is further provided on the upper side of the touch electrode 13 to protect the touch electrode 13.

[0035] The inventor of the present application finds through long-term practice and analysis that the problem of electrode disconnection or micro-connection at the lap joint is prone to occur in the scheme, and the cause of the problem is that the touch electrode 13 needs to pass through a ramp area P when extending to the lead area 1b, the ramp area P has a certain inclination angle with the trace 11 and the first insulating layer 12 at the corresponding position, and in practice, the inclination angle has a very high requirement on the process, if the inclination angle is abnormal, the touch electrode 13 will climb abnormally, and thus the problem of disconnection or micro-connection affecting reliability will occur. Figure 3 A cross-sectional structure schematic diagram of an existing touch electrode and trace lap joint under abnormal lap joint is shown.

[0036] In addition, since the display device currently pursues a narrow frame, it is required that the lead area is as narrow as possible, which further limits the size of the lap joint, and thus the process and material requirements are higher, and the possibility of disconnection or micro-connection and other problems is also increasing.

[0037] In view of the above problems, the present application provides an improved scheme for the lap joint of the touch electrode and the trace, which changes the film layer structure of the lap joint to improve the problem of poor lap joint between the touch electrode and the trace. The following specific implementation schemes are described by several examples or embodiments.

[0038] Some embodiments of the present application provide a touch panel, wherein in each embodiment, Figure 1 Similar to the prior art shown in the figure, the touch panel includes a touch area 1a and a lead area 1b located at least one side of the touch area 1a, the touch area 1a is provided with a plurality of touch electrodes 13, the plurality of touch electrodes 13 form a plurality of horizontal channels and a plurality of vertical channels, the lead area 1b is provided with a plurality of traces 11, and each horizontal channel / vertical channel is electrically connected to a trace 11.

[0039] On this basis, referring to Figure 4 , Figure 4 is a cross-sectional structure schematic diagram of the lap joint of the touch panel provided in an embodiment of the present application. As Figure 4 shown, the structure of the touch panel of the present embodiment includes a substrate 10, a trace layer, a first insulating layer 12 and an electrode layer; wherein the substrate 10 includes a part located in the above-mentioned touch area 1a and a part located in the lead area 1b;

[0040] The trace layer is located on the substrate 10 and in the lead area 1b, the trace layer includes a plurality of traces 11 and a plurality of lap joints 11a respectively connected to each trace 11, and the lap joint 11a is closer to the touch area 1a relative to the trace 11 connected thereto;

[0041] The first insulating layer 12 is located on the side of the wire layer away from the substrate 10 and in the lead area 1b, and the first insulating layer 12 exposes one end of the overlap portion 11a close to the touch area 1a;

[0042] The electrode layer is located on the substrate 10 and in the touch area 1a, and the electrode layer includes a plurality of touch electrodes 13, the plurality of touch electrodes 13 includes an overlap electrode 13a adjacent to the lead area 1b, and the overlap electrode 13a extends to the side of the overlap portion 11a away from the substrate 10 in the lead area 1b and overlaps with one end of the overlap portion 11a close to the touch area 1a.

[0043] First of all, it needs to be pointed out that, unless otherwise specified, in each embodiment of the present application, multiple refers to at least two. Similarly, multiple refers to at least two.

[0044] In addition, in the touch panel of the present embodiment, the substrate 10 mainly plays a supporting and carrying role. One end of the plurality of wires 11 of the wire layer is electrically connected to the touch electrodes 13 of the electrode layer, and the other end is connected to the touch chip. The material of the electrode layer can be ITO (Indium tin oxide, indium tin oxide), which can conduct electricity on the one hand and has good light transmittance on the other hand, which will not significantly affect the normal display of the display device. Of course, it can be understood that the electrode layer can also use other materials with similar properties, which is not limited.

[0045] In addition, in combination with Figure 4 It can be seen that, in the touch panel of the present embodiment, unlike the existing scheme shown in Figure 1 , the first insulating layer 12 on the wire layer does not extend to the touch area 1a, but only covers one end of the overlap portion 11a away from the touch area 1a, so that one end of the overlap portion 11a close to the touch area 1a is exposed. In this way, when the electrode layer is formed subsequently, the part of the overlap electrode 13a in the electrode layer extending to the lead area 1b can be in large-area overlap with one end of the overlap portion 11a close to the touch area 1a. The contact position during the overlap includes the top of the overlap portion 11a (i.e. the side away from the substrate 10) and the side wall (i.e. the side close to the touch area 1a), so even if the overlap electrode 13a climbs abnormally due to the abnormality of the inclination angle of the overlap portion 11a as shown in Figure 3 , it can still ensure that the overlap electrode 13a is in effective contact with the side wall of the wire layer overlap portion 11a, and there will be no problems such as disconnection or micro-connection of the overlap. That is, the scheme of the present embodiment can ensure the reliability of the electrical connection between the touch electrode 13 and the wire 11. In addition, since the overlap electrode 13a is in large-area contact with the overlap portion 11a, the impedance of the touch channel can also be reduced, and the touch performance can be improved.

[0046] It should be noted that the "lapped electrode 13a" involved in each embodiment of the present application refers to the touch control electrode 13 lapped with the lapping part 11a of the wiring layer. The name is only for the convenience of description and understanding, and it has the same functions as other touch control electrodes 13 except the lapping function.

[0047] In addition, in some embodiments, the lapping part 11a is a strip structure extending in the first direction; the first direction is parallel to the interface between the touch control area 1a and the lead area 1b. That is, the lapping part 11a can be a strip structure extending in a direction parallel to the interface between the touch control area 1a and the lead area 1b. In this way, the contact area of the lapped electrode 13a and the lapping part 11a can be further expanded, and the reliability of the electrical connection can be ensured.

[0048] Continuing to refer to Figure 4 In some embodiments, the lapping electrode 13a also extends to the side of the first insulating layer 12 away from the wiring layer and lapped with the first insulating layer 12. The reason for such a setting is that in the actual process, after the preparation of the wiring 11 and the first insulating layer 12 on the wiring 11 is completed, a whole layer of metal layer is formed in the touch control area 1a and the lead area 1b, and then the whole layer of metal layer is etched by etching process to remove the unnecessary part and retain the necessary part, thereby forming the electrode layer. Since the first insulating layer 12 does not completely cover the lapping part 11a of the wiring layer, the solution (etching liquid) in the etching process may reach the exposed part of the lapping part 11a, resulting in corrosion of the lapping part 11a. To solve this problem, in the present embodiment, the part of the lapping electrode 13a extending to the lead area 1b continues to extend to the upper side of the first insulating layer 12 (i.e. the side away from the wiring layer), so that the solution in the etching process is effectively blocked by the first insulating layer 12, thereby avoiding corrosion of the lapping part 11a.

[0049] Further, in some embodiments, in the first direction, the width of the lapped area of the lapping electrode 13a and the first insulating layer 12 is greater than or equal to 5 μm (micron), and in the second direction, the width of the lapped area of the lapping electrode 13a and the first insulating layer 12 is greater than or equal to 1 μm; wherein the first direction is parallel to the interface between the touch control area 1a and the lead area 1b, that is, parallel to the extension direction of the lapping part 11a, and the second direction is perpendicular to the first direction and parallel to the plane in which the substrate 10 lies. In this way, it can be ensured that the solution in the electrode layer etching process will not corrode the electrode layer.

[0050] For the above-mentioned size, for the convenience of understanding, the combination of the drawings is described. Referring to Figure 5 , Figure 5 is a top view of the forming process of the lapping film layer provided in an embodiment of the present application. As shown in Figure 5 (a), in the present embodiment, a strip-shaped lapping part 11a is first formed; thereafter, as shown inFigure 5 (b) as shown, a first insulating layer 12 is formed on the overlap portion 11a, and the first insulating layer 12 formed covers part of the overlap portion 11a Figure 5 (b) as shown, a first insulating layer 12 is formed on the overlap portion 11a, and the first insulating layer 12 formed covers part of the overlap portion 11a Figure 5 (c) as shown, an overlap electrode 13a is formed on the overlap portion 11a and the first insulating layer 12, and the overlap electrode 13a overlaps both the overlap portion 11a and the edge of the first insulating layer 12 Figure 5 (c) as shown, an overlap electrode 13a is formed on the overlap portion 11a and the first insulating layer 12, and the overlap electrode 13a overlaps both the overlap portion 11a and the edge of the first insulating layer 12 Figure 5 (c) as shown, an overlap electrode 13a is formed on the overlap portion 11a and the first insulating layer 12, and the overlap electrode 13a overlaps both the overlap portion 11a and the edge of the first insulating layer 12 Figure 5 (c) as shown, an overlap electrode 13a is formed on the overlap portion 11a and the first insulating layer 12, and the overlap electrode 13a overlaps both the overlap portion 11a and the edge of the first insulating layer 12

[0051] In addition, considering that when the first insulating layer 12 has a crack due to scratching or the like, the etching solution can enter the trace layer from the crack, thus corroding the traces 11 of the trace layer. Therefore, in some embodiments, a protective layer 16 is provided, as shown in Figure 6 Figure 6 Fig. 4 is a schematic view of a cross-sectional structure of an overlap portion of a touch panel according to another embodiment of the present application. As shown in Figure 6 Fig. 4, the touch panel further includes a protective layer 16. The protective layer 16 is located on the side of the first insulating layer 12 away from the trace layer, and the orthogonal projection of the protective layer 16 on the plane of the trace layer covers each of the traces 11. In this way, when the first insulating layer 12 has a crack, the protective layer 16 can also shield the first insulating layer 12 at the covered position, so as to prevent the etching solution from entering the trace layer below from the crack of the first insulating layer 12, and prevent the traces 11 of the trace layer from being corroded.

[0052] In some embodiments, the protective layer 16 can be made of the same material as the electrode layer, for example, both are made of ITO material.

[0053] Further, the protective layer 16 can be provided in the same layer as the electrode layer, but is not connected to the electrode layer, so as to avoid short circuiting different horizontal channels and different vertical channels of the electrode layer. That is, the protective layer 16 and the electrode layer can be formed based on the same metal layer in the same process stage. Specifically, after an entire layer of metal layer is formed in the touch area la and the lead area lb, the electrode layer is formed by etching process, and the metal material on the upper side of the first insulating layer 12 covering each of the traces 11 is reserved (not etched), so that the first insulating layer 12 at this position is not contacted by the etching liquid, thus avoiding the problem that the etching liquid enters the trace layer from the crack of the first insulating layer 12. In addition, the protective layer 16 is formed in this way, and the improvement of the process is small, which is conducive to actual implementation.​

[0054] Of course, it can be understood that the protective layer 16 can also be formed by other materials in other embodiments. As long as the corrosive solution in the etching process can be prevented from entering the trace layer from the crack of the first insulating layer 12.

[0055] In addition, when the protective layer 16 is made of the same material as the electrode layer, in some embodiments, the protective layer 16 can be made of the same material as the electrode layer. Figure 7 Figure 7 A cross-sectional structure diagram of a lap joint of a touch panel provided in another embodiment of the present application is shown in FIG. 6. As shown in FIG. 6, the protective layer 16 can include a plurality of strip-shaped protective structures 16a, and adjacent strip-shaped protective structures 16a are arranged at intervals. Each strip-shaped protective structure 16a covers one of the traces 11 in the orthogonal projection of the plane on which the traces 11 are located. That is, the protective layer 16 does not adopt an integral layer structure, but adopts a plurality of strip-shaped protective structures 16a that are not connected to each other, and each strip-shaped protective structure 16a and the trace 11 covered by the strip-shaped protective structure 16a extend in the same direction. Preferably, the width of the strip-shaped protective structure 16a is greater than the width of the trace 11 covered by the strip-shaped protective structure 16a, so that the protective effect can be better guaranteed; wherein the width of the trace is the size of the trace in the direction perpendicular to the extension direction of the trace, and the width of the strip-shaped protective structure is the size of the strip-shaped protective structure in the direction perpendicular to the extension direction of the strip-shaped protective structure. Figure 7 In this way, on the premise that the traces 11 can be effectively protected from corrosion, it can also be ensured that there is no or little conductive material in the position directly above the adjacent traces 11. Therefore, when a large area of the first insulating layer 12 in the position directly above the interval between the adjacent traces 11 is damaged, the adjacent traces 11 will not be short-circuited due to the conductive material reaching the adjacent traces 11 from the damaged position, and the performance of the touch panel will not be affected.

[0056] In addition, it should be noted that the touch panel can also include other structures necessary for realizing its functions, such as the second insulating layer 14 arranged on the side of the electrode layer away from the substrate. The present application can not improve these structures, and therefore they will not be described one by one.

[0057] The display device provided in the embodiment of the present application includes a display panel and a touch panel arranged on the light-emitting side of the display panel, and the touch panel can be the touch panel described in any of the above embodiments. The display device of the present embodiment can avoid problems such as touch abnormality caused by poor lap joint between the touch electrode of the touch panel and the trace.

[0058]

[0059] ​​Exemplary embodiments are described herein with reference to plan views as idealized illustrations of exemplary embodiments. In the drawings, the size of regions can be exaggerated for clarity. Thus, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Therefore, exemplary embodiments should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will typically have rounded or curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the scope of exemplary embodiments.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the application pertain. The terms "first", "second", and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and are not intended to limit the scope of embodiments of the application.

[0061] Unless the context clearly requires otherwise, throughout the description, the terms "comprise", "comprising", "attached", "connected", and the like are to be construed in an inclusive sense as opposed to an exclusive sense, that is as "including, but not limited to". As used herein, the terms "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example" or "some examples", and the like, generally mean the same. In the description of embodiments of the application, relative terms are used to describe one structural, functional, or positional characteristic in relation to another structural, functional, or positional characteristic. These relative terms are intended to encompass different positional, structural, or functional arrangements of the described elements, as long as the positional, structural, or functional arrangements are equivalent in terms of the intended purpose of the described elements.

Claims

1. A touch panel, characterized in that, The touch panel includes a touch area and a lead area located on at least one side of the touch area; The touch panel includes: Substrate; the substrate is located between the touch area and the lead area; The wiring layer is located on the substrate and in the lead area. The wiring layer includes multiple traces and multiple overlaps connected to each of the traces. The overlaps are closer to the touch area than the traces to which they are connected. A first insulating layer; the first insulating layer is located on the side of the wiring layer away from the substrate and in the lead area, the first insulating layer covers the end of the overlap portion away from the touch area and exposes the end of the overlap portion near the touch area; and... Electrode layer; the electrode layer is located on the substrate and in the touch area, the electrode layer includes a plurality of touch electrodes, the plurality of touch electrodes including overlapping electrodes adjacent to the lead area, the overlapping electrodes extending toward the lead area to the side of the overlapping portion away from the substrate, and overlapping with the end of the overlapping portion near the touch area, so as to ensure effective contact between the overlapping electrode and the overlapping portion; The overlapping electrode also extends to the side of the first insulating layer away from the wiring layer and overlaps with the first insulating layer; In a first direction, the width of the overlap area between the overlapping electrode and the first insulating layer is greater than or equal to 5 μm; in a second direction, the width of the overlap area between the overlapping electrode and the first insulating layer is greater than or equal to 1 μm; wherein, the first direction is parallel to the interface between the touch area and the lead area, and the second direction is perpendicular to the first direction and parallel to the plane of the substrate.

2. The touch panel according to claim 1, characterized in that, The overlapping portion is a strip-shaped structure extending along a first direction; the first direction is parallel to the interface between the touch area and the lead wire area.

3. The touch panel according to claim 1, characterized in that, Also includes: A protective layer is located on the side of the first insulating layer away from the trace layer, and the orthographic projection of the protective layer onto the plane of the trace layer covers each of the traces.

4. The touch panel according to claim 3, characterized in that, The protective layer is made of the same material as the electrode layer.

5. The touch panel according to claim 4, characterized in that, The protective layer is disposed in the same layer as the electrode layer, but is not connected to the electrode layer.

6. The touch panel according to claim 4 or 5, characterized in that, The protective layer includes multiple strip-shaped protective structures, with adjacent strip-shaped protective structures spaced apart. The orthographic projection of each strip-shaped protective structure onto the plane of the routing layer covers one of the routing traces.

7. The touch panel according to claim 6, characterized in that, The width of the strip-shaped protective structure is greater than the width of the trace it covers. The width of the trace is the dimension of the trace in the direction perpendicular to its own extension direction. The width of the strip-shaped protective structure is the dimension of the strip-shaped protective structure in the direction perpendicular to its own extension direction.

8. A display device, characterized in that, Including the touch panel as described in any one of claims 1 to 7.

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