Touch display panel and display device

Abstract

The present invention discloses a touch display panel and a display device, relating to the technical field of displays. The touch display panel includes: a substrate; a touch layer located on one side of the substrate, the touch layer including a first metal layer, an insulating layer, and a second metal layer stacked in sequence; a plurality of touch electrodes located on the second metal layer, the touch electrodes including a first electrode line extending in a first direction and a second electrode line extending in a second direction, the first direction intersecting the second direction; a plurality of touch leads, the touch electrodes being electrically connected to the corresponding touch leads; the touch leads including a first trace portion extending in the first direction, in a direction perpendicular to the plane of the substrate, the first trace portion at least partially overlapping the first electrode line, and the first trace portion at least partially located in the first metal layer. The present invention effectively reduces the influence of the touch electrodes and the touch leads on the display effect.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and more particularly, to a touch display panel and a display device. Background Art

[0002] In the prior art, a touch layer is usually disposed on the light-emitting surface of a display panel to enable the display panel to have a touch function. In an existing self-capacitance touch display panel, the touch layer includes touch electrodes and touch leads disposed on different metal layers. In order to improve conductivity and reduce production costs, the touch electrodes and touch leads can be made of a metal material.

[0003] However, when the touch electrodes and touch leads are made of a metal material, the display effect of the display device will be affected. Summary of the Invention

[0004] In view of this, the present invention provides a touch display panel and a display device, which can effectively reduce the influence of touch electrodes and touch leads on the display effect.

[0005] The present invention provides a touch display panel, including: a substrate; a touch layer located on one side of the substrate, the touch layer including a first metal layer, an insulating layer, and a second metal layer stacked in sequence; a plurality of touch electrodes located on the second metal layer, the touch electrodes including a first electrode line extending in a first direction and a second electrode line extending in a second direction, the first direction intersecting with the second direction; a plurality of touch leads, the touch electrodes being electrically connected to the corresponding touch leads; the touch leads including a first routing portion extending in the first direction, in a direction perpendicular to the plane where the substrate is located, the first routing portion at least partially overlapping with the first electrode line, and the first routing portion at least partially located in the first metal layer.

[0006] Based on the same concept, the present invention further provides a display device, which includes the above touch display panel.

[0007] Compared with the prior art, the touch display panel and the display device provided by the present invention at least achieve the following beneficial effects:

[0008] The touch display panel provided by the present invention includes a plurality of touch electrodes and a plurality of touch leads. The touch electrodes include first electrode lines extending in a first direction and second electrode lines extending in a second direction, and the first direction intersects the second direction. The touch electrodes are a grid structure formed by a plurality of first electrode lines and a plurality of second electrode lines. The touch leads include first routing portions extending in the first direction. Both the first electrode lines and the first routing portions extend in the first direction. The first electrode lines are located in a second metal layer, and at least a part of the first routing portions is located in a first metal layer. In a direction perpendicular to the plane of the substrate, at least a part of the first routing portions overlaps with at least a part of the first electrode lines. For the part of the first routing portions located in the first metal layer, it overlaps with at least a part of the first electrode lines. Since at least a part of the first routing portions overlaps with at least a part of the first electrode lines in a direction perpendicular to the plane of the substrate, the shielding of the light emitted by the touch display panel caused by the arrangement of the touch leads in the touch display panel can be reduced, and the influence on the display effect of the touch display panel is lowered. And since the material of the touch leads is metal and has the property of reflecting light, at least a part of the first routing portions overlaps with at least a part of the first electrode lines in a direction perpendicular to the plane of the substrate, the problem of the visibility of the touch lead patterns caused by the arrangement of the touch leads in the touch display panel can be alleviated.

[0009] Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned technical effects simultaneously.

[0010] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0012] Figure 1 is a plan view of a touch display panel provided by the present invention;

[0013] Figure 2 is Figure 1 an enlarged view of part A in the touch display panel described above;

[0014] Figure 3 is Figure 2 a cross-sectional view of the touch display panel along B-B';

[0015] Figure 4 is Figure 2 a cross-sectional view of the touch display panel along C-C';

[0016] Figure 5 is Figure 1 another enlarged view of part A in the touch display panel described above;

[0017] Figure 6 is Figure 5 The sectional view of the touch display panel along W-W'.

[0018] Figure 7 It is a partial sectional view of the touch layer in the touch display panel provided by the present invention;

[0019] Figure 8 is Figure 1 Another enlarged schematic view of part A in the touch display panel;

[0020] Figure 9 is Figure 8 The sectional view of the touch display panel along D-D';

[0021] Figure 10 is Figure 1 Another enlarged schematic view of part A in the touch display panel;

[0022] Figure 11 is Figure 1 Another enlarged schematic view of part A in the touch display panel;

[0023] Figure 12 is Figure 11 The sectional view of the touch display panel along E-E';

[0024] Figure 13 is Figure 11 The sectional view of the touch display panel along F-F';

[0025] Figure 14 It is a partial schematic view of the touch layer in the touch display panel provided by the present invention;

[0026] Figure 15 is Figure 11 The sectional view of the touch display panel along G-G';

[0027] Figure 16 It is a plan view of another touch display panel provided by the present invention;

[0028] Figure 17 is Figure 16 An enlarged schematic view of part J in the touch display panel;

[0029] Figure 18 is Figure 1 Another enlarged schematic view of part A in the touch display panel;

[0030] Figure 19 It is a plan view of another touch display panel provided by the present invention;

[0031] Figure 20 It is a schematic structural diagram of another touch display panel provided by the present invention;

[0032] Figure 21 It is a schematic plan view of another touch display panel provided by the present invention;

[0033] Figure 22 It is Figure 21 An enlarged schematic view of part K in the touch display panel described above;

[0034] Figure 23 It is Figure 21 Another enlarged schematic view of part K in the touch display panel described above;

[0035] Figure 24 It is Figure 23 A sectional view of the touch display panel along L-L';

[0036] Figure 25 It is a schematic plan view of another touch display panel provided by the present invention;

[0037] Figure 26 It is Figure 25 An enlarged schematic view of part M in the touch display panel described above;

[0038] Figure 27 It is a schematic plan view of another touch display panel provided by the present invention;

[0039] Figure 28 It is Figure 27 An enlarged schematic view of part N in the touch display panel described above;

[0040] Figure 29 It is a schematic plan view of another touch display panel provided by the present invention;

[0041] Figure 30 It is Figure 29 An enlarged schematic view of part R in the touch display panel described above;

[0042] Figure 31 It is a schematic plan view of another touch display panel provided by the present invention;

[0043] Figure 32 It is Figure 31 An enlarged schematic view of part S in the touch display panel described above;

[0044] Figure 33 It is a schematic plan view of another touch display panel provided by the present invention;

[0045] Figure 34 It is Figure 33An enlarged schematic view of part T in the touch display panel described above;

[0046] Figure 35 is Figure 29 Another enlarged schematic view of part R in the touch display panel described above;

[0047] Figure 36 is Figure 35 A cross-sectional view of the touch display panel along U-U';

[0048] Figure 37 is a plan view of a display device provided by the present invention. Detailed implementation manners

[0049] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0050] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0051] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0052] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0053] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0054] Figure 1 is a plan view of a touch display panel provided by the present invention, Figure 2 is Figure 1 An enlarged schematic view of part A in the touch display panel described above, Figure 3 is Figure 2 A cross-sectional view of the touch display panel along B-B', wherein the cross-section along B-B' refers to a section parallel to the second direction and perpendicular to the substrate. In the relevant embodiments of the present invention, the relevant descriptions are equally applicable and will not be repeated herein. Refer to Figures 1 - 3, this embodiment provides a touch display panel, and the touch display panel includes a substrate 100. The substrate 100 can be a rigid substrate or a flexible substrate. When the substrate 100 is a rigid substrate, the substrate 100 can be a glass substrate. When the substrate 100 is a flexible substrate, the substrate 100 can be a polyimide (PI) substrate.

[0055] The touch display panel further includes a touch layer 200. Among them, the touch layer 200 is located on one side of the substrate 100, and the touch layer 200 includes a first metal layer 210, an insulating layer 220, and a second metal layer 230 stacked in sequence. It should be noted that Figure 3 it is exemplarily shown in the figure that the second metal layer 230 in the touch layer 200 is located on the side of the first metal layer 210 away from the substrate 100. In other embodiments of the present invention, the first metal layer 210 in the touch layer 200 can also be located on the side of the second metal layer 230 away from the substrate 100, and the present invention will not elaborate here. Optionally, the touch layer 200 further includes a planarization layer 240. When the second metal layer 230 in the touch layer 200 is located on the side of the first metal layer 210 away from the substrate 100, the planarization layer is located on the side of the second metal layer 230 away from the substrate 100; when the first metal layer 210 in the touch layer 200 is located on the side of the second metal layer 230 away from the substrate 100, the planarization layer is located on the side of the first metal layer 210 away from the substrate 100.

[0056] The touch display panel further includes a plurality of touch electrodes 300 and a plurality of touch leads 400. Each touch electrode 300 is insulated from each other. The touch electrodes 300 are located on the second metal layer 230, and the touch leads 400 can all be located on the first metal layer 210, or part of them are located on the first metal layer 210 and part of them are located on the second metal layer 230. The materials of the touch electrodes 300 and the touch leads 400 are metals. Compared with using semiconductor materials, using metal materials can improve their touch performance and their bending performance. Exemplarily, the materials of the touch electrodes 300 and the touch leads 400 are one or more of Cr, Ni, Cu, Al, Ag, Mo, Au, and Ti. The touch electrode 300 includes a first electrode line 310 extending along the first direction X and a second electrode line 320 extending along the second direction Y, and the first direction X intersects with the second direction Y. Optionally, the first direction X is perpendicular to the second direction Y. The touch electrode 300 is a grid structure formed by a plurality of first electrode lines 310 and a plurality of second electrode lines 320.

[0057] A touch electrode 300 corresponds to at least one touch lead 400, and the touch electrode 300 is electrically connected to the corresponding touch lead 400. The touch electrode 300 is insulated from other touch leads 400. Herein, other touch leads 400 refer to the touch leads 400 other than the touch lead 400 electrically connected to the touch electrode 300. A signal is provided to the touch electrode 300 electrically connected thereto through the touch lead 400. Optionally, the touch electrode 300 and the corresponding touch lead 400 are electrically connected through a via V. In a direction perpendicular to the plane of the substrate 100, the via V is located at the overlapping portion of the touch lead 400 and the touch electrode 300 electrically connected thereto, so that the electrical connection between the touch electrode 300 and the corresponding touch lead 400 can be realized through the via V.

[0058] The touch lead 400 includes a first trace portion 410 extending along a first direction X. Both the first electrode line 310 and the first trace portion 410 extend along the first direction X. The first electrode line 310 is located in the second metal layer 230, and at least a part of the first trace portion 410 is located in the first metal layer 210. In a direction perpendicular to the plane of the substrate 100, at least a part of the first trace portion 410 overlaps with the first electrode line 310. The part of the first trace portion 410 located in the first metal layer 210 overlaps with at least a part of the first electrode line 310. Since at least a part of the first trace portion 410 overlaps with the first electrode line 310 in a direction perpendicular to the plane of the substrate 100, the shielding of the light emitted by the touch display panel by the touch lead 400 provided in the touch display panel can be reduced, and the influence on the display effect of the touch display panel is reduced. And since the material of the touch lead 400 is metal and has the property of reflecting light, at least a part of the first trace portion 410 overlaps with the first electrode line 310 in a direction perpendicular to the plane of the substrate 100, which can alleviate the problem that the pattern of the touch lead 400 is visible caused by the setting of the touch lead 400 in the touch display panel.

[0059] It should be noted that Figure 2 in order to clearly illustrate the relationship between the touch electrode and the touch lead, Figure 2 components such as pixels are not shown, which does not mean Figure 2 that the touch display panel shown does not include components such as pixels. Correspondingly, in other embodiments of the present invention, the corresponding view can refer to Figure 2 the schematic manner, and the present invention will not be elaborated herein.

[0060] Continue to refer to Figures 1 - 3, in some alternative embodiments, the touch display panel further includes an array layer 10, a light-emitting layer 20, and a packaging layer 30 disposed in sequence. The light-emitting layer 20 is located on a side of the array layer 10 away from the substrate 100. Optionally, the array layer 10 includes pixel circuits disposed between the substrate 100 and the light-emitting layer 20, where the pixel circuits include thin-film transistors T. The light-emitting layer 20 includes a pixel definition layer 21 and organic light-emitting devices, and the organic light-emitting devices include an anode 22, a cathode 23, and an organic light-emitting material 24 located between the anode 22 and the cathode 23. The packaging layer 30 includes a thin-film packaging structure formed by alternately stacking a plurality of inorganic layers and organic layers to package the organic light-emitting devices. Exemplarily, the packaging layer 30 may be a packaging structure stacked with an inorganic layer - an organic layer - an inorganic layer. In this embodiment, the touch layer 200 adopts an on-cell structure, and the touch layer 200 is located above the packaging layer 30, that is, the touch electrodes 300 and the touch leads 400 are disposed above the packaging layer 30. The on-cell structure only needs to form a simple electrode pattern on the touch layer 200, and the technical difficulty is relatively low. Therefore, it is easy to ensure the yield, and the effective display area in the pixel display area will not be reduced, so the display effect of the touch display panel will not be degraded. In addition, when the touch layer 200 is disposed on a side of the packaging layer 30 away from the substrate 100 in this embodiment, when a touch body touches the touch display panel, such a setting makes the touch layer 200 closer to the touch body, so that the touch electrodes 300 in the touch layer 200 can more sensitively sense touch signals, which is beneficial to improving the touch sensitivity of the touch display panel.

[0061] It should be noted that this embodiment exemplarily shows a setting manner of the touch layer in the organic display panel. In other embodiments of the present invention, the touch layer may also be disposed on other film layers. Of course, in other embodiments of the present invention, the touch layer may also be disposed in other types of display panels, and the present invention will not elaborate herein one by one.

[0062] Figure 4 is Figure 2 The sectional view of the touch display panel along C-C', refer to Figure 2 and Figure 4, in some alternative embodiments, the touch lead 400 includes a first touch lead 400a located in the first metal layer 210, and the touch electrode 300 includes a first touch electrode 300a located in the second metal layer 230. The first metal layer 210 is on the side of the insulating layer 220 close to the substrate 100, and the second metal layer 230 is on the side of the insulating layer 220 away from the substrate 100. When the touch body touches the touch display panel, this arrangement makes the touch electrode 300 closer to the touch body, so that the touch electrode 300 can sense the touch signal more sensitively, which is beneficial to improving the touch sensitivity of the touch display panel.

[0063] The area where the first touch electrode 300a is located is the first area Q1. In the first area Q1, the first electrode line 310 of the first touch electrode 300a covers the first trace portion 410 of the first touch lead 400a in the direction perpendicular to the plane where the substrate 100 is located. The first electrode line 310 of the first touch electrode 300a shields the first trace portion 410 of the first touch lead 400a, preventing a signal from being generated between the first trace portion 410 of the first touch lead 400a and the finger during touch detection, which may cause an error in touch detection and is beneficial to improving touch accuracy.

[0064] Figure 5 Yes Figure 1 Another enlarged schematic diagram of part A of the touch display panel described above. Figure 6 Yes Figure 5 A cross-sectional view of the touch display panel along W-W', refer to Figure 5 and Figure 6 , optionally, the width of the first electrode line 310 of the first touch electrode 300a in the second direction Y is greater than the width of the first trace portion 410 of the first touch lead 400a in the second direction Y, which is beneficial to the shielding of the first trace portion 410 of the first touch lead 400a by the first electrode line 310 of the first touch electrode 300a.

[0065] It should be noted that in the touch display panel provided by the present invention, there may be at least one touch lead 400 as the first touch lead 400a, and the first touch lead 400a can be any touch lead 400. Of course, all the touch leads 400 in the touch display panel provided by the present invention can also be set as the first touch leads 400a. In the touch display panel provided by the present invention, there may also be some touch leads 400 as the first touch leads 400a, and at the same time, there may also be other types of touch leads 400 in the touch display panel.

[0066] Similarly, in the touch display panel provided by the present invention, at least one touch electrode 300 can be the first touch electrode 300a, and the first touch electrode 300a can be any touch electrode 300. Of course, all touch electrodes 300 in the touch display panel provided by the present invention can also be set as the first touch electrodes 300a. In the touch display panel provided by the present invention, some touch electrodes 300 can also be the first touch electrodes 300a, and at the same time, other types of touch electrodes 300 can also exist in the touch display panel. Exemplarily, the touch electrodes 300 arranged in the row direction can be set as the first touch electrodes 300a, or the touch electrodes 300 arranged in the column direction can be set as the first touch electrodes 300a. The present invention will not elaborate one by one here.

[0067] Figure 7 is a partial cross-sectional view of the touch layer in the touch display panel provided by the present invention. Refer to Figure 7 , in the display panel, in the direction perpendicular to the plane of the display panel, when the metal lines 1 and 2 in the adjacent two metal layers at least partially overlap, due to the manufacturing process, metal puncture is likely to occur at the overlapping part. That is, the metal line 1 is fabricated first, and then the metal line 2 is fabricated. Due to the etching process, when the metal line 1 is fabricated, a spiky structure 4 is likely to be generated at the edge of the metal line 1, and the spiky structure 4 is likely to pierce the insulating layer 4 between the adjacent two metal layers, resulting in a short circuit between the lower metal line 1 and the upper metal line 2. Further, after the metal line 1 is fabricated, a stepped structure is formed at the boundary position of the metal line 1. In the direction perpendicular to the plane of the display panel, when the metal lines 1 and 2 in the adjacent two metal layers at least partially overlap, that is, when the metal line 2 needs to be fabricated above the stepped structure subsequently, when the metal line 2 is exposed, since the boundary position of the metal line 1 is a stepped structure, the photoresist is likely to flow into the junction of the height difference of the insulating layer 4, resulting in metal etching residue likely to occur at this place, increasing the risk of short circuit between the lower metal line 1 and the upper metal line 2. Further, in the direction perpendicular to the plane of the display panel, the more the overlapping area of the metal lines 1 and 2 in the adjacent two metal layers, the greater the risk of short circuit between the metal lines 1 and 2.

[0068] Refer to Figures 1 - 3, in the touch display panel provided by the present invention, the first electrode lines 310 in the touch electrode 300 and the first routing portions 410 in the touch lead 400 both extend along the first direction X. The first electrode lines 310 are located in the second metal layer 230, and at least a part of the first routing portions 410 are located in the first metal layer 210. And in the direction perpendicular to the plane of the substrate 100, at least a part of the first routing portions 410 overlap with the first electrode lines 310. The larger the overlapping area between the perpendicular projection of the first routing portions 410 on the plane of the substrate 100 and the perpendicular projection of the first electrode lines 310 on the plane of the substrate 100, the greater the risk of short circuit between the first routing portions 410 and the first electrode lines 310, and the greater the risk of short circuit between the mutually insulated touch electrode 300 and the touch lead 400.

[0069] Based on the above research, the present invention provides a touch display panel, which is described in detail as follows:

[0070] Figure 8 Yes Figure 1 Another enlarged schematic view of part A in the touch display panel described above, Figure 9 Yes Figure 8 A cross-sectional view of the touch display panel along D-D', refer to Figure 8 And Figure 9 , in some alternative embodiments, the touch lead 400 includes a second touch lead 400b, the second touch lead 400b is located in the first metal layer 210, the touch electrode 300 includes a second touch electrode 300b, and the second touch electrode 300b is located in the second metal layer 230. Optionally, the second touch lead 400b and the second touch electrode 300b are mutually insulated.

[0071] A second touch electrode 300b includes at least two adjacent first electrode lines 310 arranged along the first direction X. A first gap q1 is included between two adjacent first electrode lines 310. In the direction perpendicular to the plane of the substrate 100, the first routing portion 410 of the second touch lead 400b overlaps with the first gap q1. That is, no first electrode lines 310 are provided in the area corresponding to the first gap q1 in the touch display panel, and only the first routing portion 410 of the second touch lead 400b is provided in this area, thereby reducing the overlapping area between the perpendicular projection of the first routing portion 410 on the plane of the substrate 100 and the perpendicular projection of the first electrode lines 310 on the plane of the substrate 100, and reducing the risk of short circuit between the first routing portion 410 and the first electrode lines 310, and reducing the risk of short circuit between the mutually insulated touch electrode 300 and the touch lead 400.

[0072] It should be noted that two adjacent first electrode lines 310 arranged along the first direction X mean that there are no other first electrode lines 310 between the two first electrode lines 310 arranged along the first direction X.

[0073] Optionally, in the touch electrode 300 and the touch lead 400 that are electrically connected to each other, there is no need to reduce the overlapping area between the vertical projection of the first trace portion 410 on the plane where the substrate 100 is located and the vertical projection of the first electrode line 310 on the plane where the substrate 100 is located.

[0074] It should be noted that in the touch display panel provided by the present invention, there may be at least one touch lead 400 as the second touch lead 400b, and the second touch lead 400b can be any touch lead 400. Of course, in the touch display panel provided by the present invention, all the touch leads 400 can also be set as the second touch leads 400b. In the touch display panel provided by the present invention, there may also be some touch leads 400 as the second touch leads 400b, and at the same time, there may also be other types of touch leads 400 in the touch display panel.

[0075] Similarly, in the touch display panel provided by the present invention, there may be at least one touch electrode 300 as the second touch electrode 300b, and the second touch electrode 300b can be any touch electrode 300. Of course, in the touch display panel provided by the present invention, all the touch electrodes 300 can also be set as the second touch electrodes 300b. In the touch display panel provided by the present invention, there may also be some touch electrodes 300 as the second touch electrodes 300b, and at the same time, there may also be other types of touch electrodes 300 in the touch display panel. Exemplarily, the touch electrodes 300 arranged along the row direction can be set as the second touch electrodes 300b, or the touch electrodes 300 arranged along the column direction can be set as the second touch electrodes 300b, and the present invention will not elaborate here one by one.

[0076] Figure 10 Yes Figure 1 Another enlarged schematic diagram of part A in the touch display panel described above, refer to Figure 10 , optionally, in one second touch electrode 300b, along the direction perpendicular to the plane where the substrate 100 is located, part of the first trace portion 410 only overlaps with the intersection of the first electrode line 310 and the second electrode line 320, further reducing the overlapping area between the vertical projection of the first trace portion 410 on the plane where the substrate 100 is located and the vertical projection of the first electrode line 310 on the plane where the substrate 100 is located, reducing the risk of short circuit between the first trace portion 410 and the first electrode line 310, and reducing the risk of short circuit between the mutually insulated touch electrode 300 and the touch lead 400.

[0077] Figure 11 YesFigure 1 Another enlarged schematic view of part A of the touch display panel described above Figure 12 is Figure 11 A cross-sectional view of the touch display panel along E-E', referring to Figure 11 and Figure 12 , in some alternative embodiments, the touch lead 400 includes a third touch lead 400c. The third touch lead 400c is insulated from the touch electrodes 300 other than those electrically connected thereto. A part of the first trace portion 410 of the third touch lead 400c is located in the second metal layer 230. In the region corresponding to the touch electrodes 300 insulated from the third touch lead 400c, since a part of the first trace portion 410 of the third touch lead 400c is located in the second metal layer 230, correspondingly, the region in the second metal layer 230 for setting the first trace portion 410 cannot be used to set the first electrode line 310. That is, in the direction perpendicular to the plane of the substrate 100, the part of the first trace portion 410 located in the second metal layer 230 does not overlap with the first electrode line 310. The overlapping area between the perpendicular projection of the first trace portion 410 on the plane of the substrate 100 and the perpendicular projection of the first electrode line 310 on the plane of the substrate 100 is effectively reduced, the risk of short circuit between the first trace portion 410 and the first electrode line 310 is reduced, and the risk of short circuit between the mutually insulated touch electrodes 300 and the touch lead 400 is reduced.

[0078] It should be noted that in the touch display panel provided by the present invention, there may be at least one touch lead 400 as the third touch lead 400c, and the third touch lead 400c can be any touch lead 400. Of course, all the touch leads 400 in the touch display panel provided by the present invention can also be set as the third touch leads 400c. In the touch display panel provided by the present invention, there may also be some touch leads 400 as the third touch leads 400c, and at the same time, there may also be other types of touch leads 400 in the touch display panel.

[0079] It should be noted that in the third touch lead 400, a section of the lead can be located in the second metal layer 230, or multiple sections of the lead can be located in the second metal layer 230. The present invention will not elaborate on this one by one here.

[0080] Figure 13 is Figure 11 A cross-sectional view of the touch display panel along F-F', referring to Figure 11 and Figure 13 , in some alternative embodiments

[0081] The width of the touch lead 400 in the second direction Y is equal to the width of the first electrode line 310 in the second direction Y. Along the direction perpendicular to the plane of the substrate 100, the first trace portion 410 of the touch lead 400 and the first electrode line 310 overlap at least partially, which can reduce the influence of the increased reflection area caused by the setting of the touch lead 400 and alleviate the problem of the visibility of the touch lead 400 pattern in the touch display panel.

[0082] It should be noted that Figure 11 and Figure 13 exemplarily shows that the width of the touch lead 400 in the second direction Y is equal to the width of the first electrode line 310 in the second direction Y. In other embodiments of the present invention, referring to Figure 14 , Figure 14 is a partial schematic diagram of the touch layer in the touch display panel provided by the present invention. Optionally, when the first metal layer 210 is located on the side of the insulating layer 220 close to the substrate, and the touch electrode 300 is located on the side of the touch lead 400 away from the substrate, the width of the touch lead 400 in the second direction Y can be greater than the width of the first electrode line 310 in the second direction Y in the touch electrode 300. Even if a spiky structure is generated at the edge of the touch lead 400 due to etching residue, when the spiky structure pierces the insulating layer 220, since the width of the touch lead 400 is greater than the width of the first electrode line 310 in the touch electrode 300, there is a certain distance between the spiky structure at the edge of the touch lead 400 and the first electrode line 310, thereby reducing the risk of metal puncture between the first trace portion 410 and the first electrode line 310 and reducing the risk of short circuit between the mutually insulated touch electrode 300 and the touch lead 400. Further, after the first trace portion 410 is fabricated, the boundary position of the first trace portion 410 is a stepped structure. When the first electrode line 310 is fabricated above the stepped structure later, when exposing the first electrode line 310, a photoresist needs to be coated at the area where the first electrode line 310 is formed in the second metal layer 230. Since the width of the first electrode line 310 in the second direction Y is smaller than the width of the first trace portion 410 in the second direction Y, there is a certain distance at the junction of the coating position of the photoresist and the height difference of the insulating layer 220, avoiding the photoresist flowing into the junction of the height difference of the insulating layer 220, thereby avoiding the situation where metal etching residue is likely to occur at this place, reducing the risk of short circuit between the mutually insulated touch electrode 300 and the touch lead 400, and reducing the risk of short circuit between adjacent two touch electrodes.

[0083] Figure 15 is Figure 11 the sectional view of the touch display panel along G-G’, continue to refer to Figure 11 、 Figure 12 and Figure 15, in some alternative embodiments, the first trace portion 410 of the third touch lead 400c includes a first sub-portion 411 and a second sub-portion 412 that are electrically connected. The first sub-portion 411 is located in the first metal layer 210, and the second sub-portion 412 is located in the second metal layer 230.

[0084] The touch electrode 300 includes a third touch electrode 300c. At least two adjacent second electrode lines 320 arranged along the second direction Y are included in one third touch electrode 300c. A second gap q2 is included between two adjacent second electrode lines 320. In a direction perpendicular to the plane of the substrate 100, the second sub-portion 412 overlaps with the second gap q2, the second sub-portion 412 extends through the second gap q2, and the second sub-portion 412 does not overlap with the third touch electrode 300c. Thus, while the second sub-portion 412 of the first trace portion 410 of the third touch lead 400c is located in the second metal layer 230, the third touch lead 400c and a part of the third touch electrode 300c are insulated from each other.

[0085] The first sub-portion 411 of the first trace portion 410 of the third touch lead 400c is located in the first metal layer 210. In a direction perpendicular to the plane of the substrate 100, the third touch electrode 300c partially overlaps with the first sub-portion 411, thereby realizing the transmission of signals between the electrode lines in the third touch electrode 300c.

[0086] It should be noted that two adjacent second electrode lines 320 arranged along the second direction Y mean that there are no other second electrode lines 320 between the two second electrode lines 320 arranged along the second direction Y.

[0087] It should be noted that in the first trace portion 410 of the third touch lead 400c, the number of the first sub-portion 411 and the second sub-portion 412 can be set according to actual production requirements.

[0088] It should be noted that there may be at least one touch electrode 300 in the touch display panel provided by the present invention that is the third touch electrode 300c, and the third touch electrode 300c can be any touch electrode 300. Of course, all the touch electrodes 300 in the touch display panel provided by the present invention can also be set as the third touch electrodes 300c. There may also be some touch electrodes 300 in the touch display panel provided by the present invention that are the third touch electrodes 300c, and there may also be other types of touch electrodes 300 in the touch display panel. Exemplarily, the touch electrodes 300 arranged along the row direction can be set as the third touch electrodes 300c, or the touch electrodes 300 arranged along the column direction can be set as the third touch electrodes 300c. The present invention will not elaborate here one by one.

[0089] It should be noted that Figure 11Exemplarily shown is the structure of a third touch electrode 300c and a third touch lead 400c in a touch display panel. In other embodiments of the present invention, similar settings may also be adopted for the third touch electrode 300c and the third touch lead 400c in other types of touch display panels. Exemplarily, referring to Figure 16 and Figure 17 , Figure 16 is a schematic plan view of another touch display panel provided by the present invention. Figure 17 is Figure 16 an enlarged schematic view of part J in the touch display panel described above. In the first trace portion 410 of the third touch lead 400c, a first sub-portion 411 and a second sub-portion 412 are electrically connected. The first sub-portion 411 is located in the first metal layer 210, and the second sub-portion 412 is located in the second metal layer 230. The touch electrode 300 includes a third touch electrode 300c. At least two adjacent second electrode lines 320 arranged along the second direction Y are included in one third touch electrode 300c. A second gap q2 is included between two adjacent second electrode lines 320. In a direction perpendicular to the plane of the substrate 100, the second sub-portion 412 overlaps with the second gap q2, the second sub-portion 412 extends through the second gap q2, and the second sub-portion 412 does not overlap with the third touch electrode 300c. Thus, while the second sub-portion 412 of the first trace portion 410 of the third touch lead 400c is located in the second metal layer 230, the third touch lead 400c and part of the third touch electrode 300c are insulated from each other. The first sub-portion 411 of the first trace portion 410 of the third touch lead 400c is located in the first metal layer 210. In a direction perpendicular to the plane of the substrate 100, the third touch electrode 300c partially overlaps with the first sub-portion 411, thereby realizing the transmission of signals between the electrode lines in the third touch electrode 300c.

[0090] In some alternative embodiments, in a direction perpendicular to the plane of the substrate, only one electrode line in at least one third touch electrode overlaps with the first sub-portion.

[0091] Continuing to refer to Figure 17 , in a direction perpendicular to the plane of the substrate 100, only one first electrode line 310 in at least one third touch electrode 300c overlaps with the first sub-portion 411. The first electrode line 310 is only connected to two second electrode lines 320, so that while minimizing the overlapping area between the vertical projection of the first trace portion 410 in the plane of the substrate 100 and the vertical projection of the first electrode line 310 in the plane of the substrate 100, the transmission of signals between the electrode lines in the third touch electrode 300c is realized.

[0092] Figure 18 is Figure 1Another enlarged schematic view of part A in the touch display panel described above, refer to Figure 18 , in a direction perpendicular to the plane of the substrate 100, only one second electrode line 320 in at least one third touch electrode 300c overlaps with the first sub - part 411, so that while minimizing the overlapping area of the vertical projection of the first wiring part 410 in the plane of the substrate 100 and the vertical projection of the first electrode line 310 in the plane of the substrate 100, the signal transmission between the electrode lines in the third touch electrode 300c is achieved.

[0093] Figure 19 is a plan view of another touch display panel provided by the present invention. In some alternative embodiments, the touch display panel includes at least one bending region NF. The touch display panel is a bendable display panel, and the part of the touch display panel located in the bending region NF is bendable. The bending region NF includes a third touch lead wire ( Figure 19 not shown in). Exemplarily, the structure of the third touch lead wire in the bending region NF can refer to Figure 11 the structure of the third touch lead wire 400c in. In the region corresponding to the touch electrode 300 insulated from the third touch lead wire 400c, since part of the first wiring part 410 in the third touch lead wire 400c is located in the second metal layer 230, correspondingly, the region in the second metal layer 230 for setting the first wiring part 410 cannot set the first electrode line 310, thereby reducing the wiring in the first metal layer 210 corresponding to this region, which is beneficial to reducing the bending stress in this region. At least part of the touch lead wires in the bending region NF are third touch lead wires, which is beneficial to realizing the bending of the bending region NF.

[0094] It should be noted that Figure 19 exemplarily shows that the touch display panel includes one bending region NF. In other embodiments of the present invention, the touch display panel may further include two or more bending regions NF, which will not be elaborated herein one by one.

[0095] It can be understood that, exemplarily, when the touch display panel includes a bending region in this embodiment, the structure of the third touch lead wire 400c in the bending region can be Figure 11 the structure of the third touch lead wire 400c described in. In other embodiments of the present invention, the structure of the third touch lead wire 400c in the bending region may also be other structures, which will not be elaborated herein one by one.

[0096] Figure 20 is a structural schematic view of another touch display panel provided by the present invention, refer to Figure 20, in some alternative embodiments, the touch display panel is a bendable display panel. The touch display panel includes a display area AA, and the display area AA includes a first display area AA1. The first display area AA1 bends in a direction away from the light-emitting side of the touch display panel. The first display area AA1 includes a third touch lead wire ( Figure 20 not shown in). Exemplarily, the structure of the third touch lead wire in the first display area AA1 can refer to Figure 11 the structure of the third touch lead wire 400c in. In the area corresponding to the touch electrode 300 insulated from the third touch lead wire 400c, since a part of the first wiring portion 410 in the third touch lead wire 400c is located in the second metal layer 230, correspondingly, the area in the second metal layer 230 for setting the first wiring portion 410 cannot be used to set the first electrode line 310, thereby reducing the wiring in the first metal layer 210 corresponding to this area and being beneficial to reducing the bending stress in this area. At least some of the touch lead wires in the first display area AA1 are the third touch lead wires, which is beneficial to realizing the bending of the first display area AA1.

[0097] It should be noted that Figure 20 exemplarily shows that the touch display panel includes two first display areas AA1. In other embodiments of the present invention, the touch display panel may also include other numbers of first display areas AA1, which will not be elaborated herein one by one.

[0098] It can be understood that this embodiment exemplarily shows that the structure of the third touch lead wire 400c in the first display area AA1 of the touch display panel can be Figure 11 the structure of the third touch lead wire 400c described in. In other embodiments of the present invention, the structure of the third touch lead wire 400c in the first display area AA1 can also be other structures, which will not be elaborated herein one by one.

[0099] Continuing to refer to Figure 1 , in some alternative embodiments, the touch display panel further includes a plurality of sub-pixels P, and the display of the touch display panel is realized by the light emission of the sub-pixels P.

[0100] In the touch control electrode 300, a plurality of first electrode lines 310 and a plurality of second electrode lines 320 intersect to define a plurality of meshes, that is, the touch control electrode 300 is a metal mesh structure. The vertical projection of at least one mesh on the substrate 100 surrounds the vertical projection of at least one sub-pixel P on the substrate 100. That is to say, the vertical projection of at least one sub-pixel P on the substrate 100 is located within the vertical projection of a mesh in the touch control electrode 300, avoiding the occlusion of the light-emitting area of the sub-pixel P by the first electrode line 310 and the second electrode line 320 in the touch control electrode 300, which is beneficial to improving the display effect of the touch display panel. In addition, the meshes of the touch control electrode 300 are correspondingly arranged with the sub-pixels P, which can increase the mesh density of the touch control electrode 300, thereby being beneficial to improving the touch sensitivity of the touch display panel. It should be noted that the mesh mentioned in this embodiment is an annular structure defined by the intersection of metal electrode lines.

[0101] In the direction perpendicular to the plane where the substrate 100 is located, the touch lead 400 does not overlap with the sub-pixel P, avoiding the occlusion of the light-emitting area of the sub-pixel P by the touch lead 400, which is beneficial to improving the display effect of the touch display panel.

[0102] Figure 21 It is a schematic plan view of another touch display panel provided by the present invention. Figure 22 is Figure 21 An enlarged schematic view of part K of the touch display panel described above. Refer to Figure 21 and Figure 22 In some optional embodiments, the touch control electrodes 300 are arranged in an array along the first direction X and the second direction Y.

[0103] In the first direction X, the length of the gap q3 between two adjacent touch control electrodes 300 arranged along the first direction X is d1. It should be noted that in the first direction X, the length of the gap q3 between two adjacent touch control electrodes 300 arranged along the first direction X refers to the minimum length of the gap q3 between two adjacent touch control electrodes 300 arranged along the first direction X in the first direction X.

[0104] In the first direction X, the length of the sub-pixel P located between two adjacent touch electrodes 300 arranged along the first direction X is d2. In the first direction X, the distance between two adjacent sub-pixels P adjacent to the sub-pixel P located between two adjacent touch electrodes 300 arranged along the first direction X is d3. It should be noted that in this embodiment, two adjacent touch electrodes 300 arranged along the first direction X are two adjacent touch electrodes 300 arranged along the first direction X at the same position. Exemplarily, two adjacent touch electrodes 300 arranged along the first direction X are touch electrode 300d and touch electrode 300e respectively. The length of the gap between touch electrode 300d and touch electrode 300e in the first direction X is d1. The length of the sub-pixel P1 between touch electrode 300d and touch electrode 300e in the first direction X is d2. In the first direction X, the distance between two adjacent sub-pixels P2 and P3 adjacent to the sub-pixel P1 is d3.

[0105] In the prior art, the length of the gap between two adjacent touch electrodes is generally much smaller than the length of a sub-pixel. The small length of the gap between two adjacent touch electrodes easily causes the risk of short circuit between two adjacent touch electrodes.

[0106] In this application, d2 ≤ d1, that is, the length of the gap q3 between touch electrode 300d and touch electrode 300e in the first direction X is greater than or equal to the length of the sub-pixel P1 in the first direction X. The gap between touch electrode 300d and touch electrode 300e is large, effectively reducing the risk of short circuit between touch electrode 300d and touch electrode 300e. And d1 ≤ d3, that is, the length of the gap q3 between touch electrode 300d and touch electrode 300e in the first direction X is less than or equal to the distance between the sub-pixels P2 and P3, avoiding the influence of the too large gap q3 between touch electrode 300d and touch electrode 300e on the touch sensitivity of the touch display panel. In this application, d2 ≤ d1 ≤ d3, realizing effectively reducing the risk of short circuit between touch electrode 300d and touch electrode 300e while having a small influence on the touch sensitivity of the touch display panel.

[0107] Figure 23 Yes Figure 21 Another enlarged schematic view of part K in the touch display panel Figure 24 Yes Figure 23 The sectional view of the touch display panel along L-L', referring to Figure 23 and Figure 24 , in some alternative embodiments, the touch display panel further includes an array layer 10. The array layer 10 is located between the substrate 100 and the touch layer 200. The array layer 10 includes a third metal layer 500.

[0108] In the first direction X, a plurality of first dummy lines 610 are provided between two adjacent touch electrodes 300. The first dummy lines 610 extend along the first direction X. In the direction perpendicular to the plane of the substrate 100, both ends of the first dummy lines 610 respectively overlap with the adjacent touch electrodes 300, and the first dummy lines 610 do not overlap with the sub-pixels P. The material of the first dummy lines 610 is also a metal material. The first dummy lines 610 are disposed at the disconnection between two adjacent touch electrodes 300 in the first direction X, which is beneficial to solve the problem that the pattern of the touch electrodes 300 is visible due to the large distance between two adjacent touch electrodes 300 in the first direction X. Optionally, in the first direction X, the first dummy lines 610 do not need to be provided in the area where the touch leads 400 are provided between two adjacent touch electrodes 300.

[0109] The first dummy lines 610 are located in the third metal layer 500 of the array layer 10, and there is no need to additionally provide a metal layer for forming the first dummy lines 610, which effectively reduces the thickness of the touch display panel, reduces the process, and reduces the production cost. Optionally, the third metal layer 500 can be a gate metal layer, the third metal layer 500 can also be a source-drain metal layer, or other metal layers in the array layer 10, and the present invention will not elaborate herein.

[0110] Figure 25 It is a schematic plan view of another touch display panel provided by the present invention. Figure 26 is Figure 25 An enlarged schematic view of part M in the touch display panel described above. Refer to Figure 25 and Figure 26 , in some alternative embodiments, the touch electrodes 300 are arranged in an array along the first direction X and the second direction Y.

[0111] The touch lead 400 includes a connected first branch 420 and a second branch 430. The second branch 430 is connected between two adjacent first branches 420 in the first direction X, and the second branch 430 is located in the gap q3 between two adjacent touch electrodes 300 arranged in the first direction X. Optionally, in the direction perpendicular to the plane of the substrate 100, the first branch 420 and the touch electrode 300 at least partially overlap.

[0112] The second branch 430 and the touch electrode 300 are located in different metal layers. In the direction perpendicular to the plane of the substrate 100, the second branch 430 does not overlap with the touch electrode 300, thereby avoiding a short circuit between the second branch 430 and the touch electrode 300.

[0113] In the prior art, a step difference is formed in the area where the touch lead is arranged in the touch display panel. When manufacturing the touch electrode in the subsequent metal layer, an etching residue problem is likely to occur in this area. Since the part of the touch lead in the gap between two adjacent touch electrodes arranged along the first direction extends along the first direction, when manufacturing the touch electrode, etching residue is likely to be generated in the area corresponding to the touch lead in the gap between two adjacent touch electrodes arranged along the first direction. The first electrode line in the touch electrode also extends along the first direction, which easily causes a short circuit problem between the corresponding first electrode lines in two adjacent touch electrodes arranged along the first direction, thereby causing a short circuit between two adjacent touch electrodes arranged along the first direction. It should be noted that the corresponding first electrode lines in two adjacent touch electrodes arranged along the first direction refer to that in two adjacent touch electrodes arranged along the first direction, one first electrode line in one touch electrode and one first electrode line in the other touch electrode are adjacent and arranged along the first direction, and no other first electrode lines are provided between the two first electrode lines.

[0114] In this embodiment, the second branch 430 includes two first sub - parts 431 respectively connected to different first branches 420, and a second sub - part 432 connecting the two first sub - parts 431. One end of the first sub - part 431 is connected to the second sub - part 432, the other end of the first sub - part 431 is connected to the first branch 420, the second sub - part 432 extends along the first direction X, and the first sub - part 431 extends along the second direction Y. That is to say, the second branch 430 in the touch lead 400 is designed with a corner, so that the vertical projection of the second branch 430 on the substrate 100 at least partially surrounds the vertical projection of a sub - pixel P on the substrate 100, and along the direction perpendicular to the plane where the substrate 100 is located, the second branch 430 does not overlap with the touch electrode 300. Thus, even when etching residue occurs in the area corresponding to the second branch 430 in the metal layer when manufacturing the touch electrode 300, the risk of short - circuit between two adjacent touch electrodes 300 arranged along the first direction X can be effectively reduced.

[0115] Figure 27 is a schematic plan view of another touch display panel provided by the present invention, Figure 28 is Figure 27 an enlarged schematic view of part N in the described touch display panel, refer to Figure 27 and Figure 28 , in some alternative embodiments, the touch display panel includes a plurality of sub - pixel rows P10 arranged along the first direction X, and the sub - pixel row P10 includes a plurality of sub - pixels P arranged along the second direction Y.

[0116] The sub-pixel row P10 includes a first sub-pixel row P11 and a second sub-pixel row P12. Along the first direction X, the first sub-pixel row P11 and the second sub-pixel row P12 are arranged at intervals. In the first direction X, one sub-pixel P in the first sub-pixel row P11 overlaps with two adjacent sub-pixels P in the second sub-pixel row P12. Along the direction perpendicular to the plane of the substrate 100, the touch lead 400 does not overlap with the sub-pixel P. Therefore, when adopting the arrangement mode of the sub-pixels P in the touch display panel provided by this embodiment, the touch lead 400 needs to include a plurality of corners, and the vertically projected part of the corner on the substrate 100 surrounds the vertical projection of a sub-pixel P on the substrate 100. Correspondingly, the second branch 430 in the touch lead 400 is also a corner structure, and the vertically projected part of the second branch 430 on the substrate 100 surrounds the vertical projection of a sub-pixel P on the substrate 100.

[0117] The second branch 430 in the touch lead 400 is a corner structure. The vertically projected part of the second branch 430 on the substrate 100 surrounds the vertical projection of a sub-pixel P on the substrate 100. And along the direction perpendicular to the plane of the substrate 100, the second branch 430 does not overlap with the touch electrode 300. Thus, even when etching residues occur in the area corresponding to the second branch 430 in the metal layer during the fabrication of the touch electrode 300, the risk of short circuit between two adjacent touch electrodes 300 arranged along the first direction X can be effectively reduced.

[0118] Figure 29 It is a schematic plan view of another touch display panel provided by the present invention. Figure 30 is Figure 29 an enlarged schematic view of the R part in the touch display panel described above. Refer to Figure 29 and Figure 30 , in some alternative embodiments, the touch electrodes 300 are arranged in an array along a third direction Z1 and a fourth direction Z2. The third direction Z1 intersects with the fourth direction Z2, and the third direction Z1 intersects with both the first direction X and the second direction Y. The fourth direction Z2 intersects with both the first direction X and the second direction Y. Optionally, the third direction Z1 is perpendicular to the fourth direction Z2.

[0119] The touch lead 400 further includes a second wiring portion 440 extending along the second direction Y. In a direction perpendicular to the plane of the substrate 100, the second wiring portion 440 at least partially overlaps with the second electrode line 320, which can reduce the occlusion of the light emitted by the touch display panel by the second wiring portion 440 in the touch lead 400, and can further reduce the occlusion of the light emitted by the touch display panel by the touch lead 400 provided in the touch display panel, thereby reducing the impact on the display effect of the touch display panel. Moreover, since the material of the touch lead 400 is metal and has the property of reflecting light, in a direction perpendicular to the plane of the substrate 100, the second wiring portion 440 at least partially overlaps with the second electrode line 320, which can reduce the impact of the increased reflective area caused by the provision of the touch lead 400.

[0120] Continuing to refer Figure 29 and Figure 30 , in some alternative embodiments, the touch lead 400 includes a second branch 430. The second branch 430 is located within a gap q3 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1. The second branch 43 is located between the insulated touch electrode 300d and the touch electrode 300e. At the disconnection of the touch electrode 300d and the touch electrode 300e, the second branch 430 extends along the first direction X, that is, the length of the second branch 430 in the first direction X is proportional to the length of the gap q3 between the touch electrode 300d and the touch electrode 300e in the third direction Z1.

[0121] In the first direction X, the length of the second branch 430 is m1. In the first direction X, the length of the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is m2. In the first direction X, the distance between two adjacent sub-pixels P2 and P3 adjacent to the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is m3.

[0122] m2 ≤ m1, that is, the length of the second branch 430 in the first direction X is greater than or equal to the length of the sub-pixel P1 in the first direction X, that is, the length of the second branch 430 in the first direction X is longer. The longer the length of the second branch 430 in the first direction X means that the length of the gap q3 between the touch electrode 300d and the touch electrode 300e in the third direction Z1 is larger, effectively reducing the risk of short circuit between the touch electrode 300d and the touch electrode 300e. And m1 ≤ m3, that is, the length of the second branch 430 in the first direction X is less than or equal to the pitch between the sub-pixel P2 and the sub-pixel P3, avoiding the length of the second branch 430 in the first direction X from being too large, that is, avoiding the length of the gap q3 between the touch electrode 300d and the touch electrode 300e in the third direction Z1 from being too large, thereby reducing the impact on the touch sensitivity of the touch display panel. In the present application, m2 ≤ m1 ≤ m3, achieving effective reduction of the risk of short circuit between the touch electrode 300d and the touch electrode 300e while having a small impact on the touch sensitivity of the touch display panel.

[0123] Figure 31 is a schematic plan view of another touch display panel provided by the present invention, Figure 32 is Figure 31 an enlarged schematic view of the S part in the touch display panel described above, refer to Figure 31 and Figure 32 In some alternative embodiments, the touch lead 400 includes a second branch 430. The second branch 430 is located in the gap q3 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1. The second branch 43 is between the mutually insulated touch electrodes 300d and 300e. At the disconnection of the touch electrodes 300d and 300e, the second branch 430 extends along the second direction Y, that is, the length of the second branch 430 in the second direction Y is proportional to the length of the gap q3 between the touch electrodes 300d and 300e in the third direction Z1.

[0124] In the second direction Y, the length of the second branch 430 is n1. In the second direction Y, the length of the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is n2. In the second direction Y, the pitch between two sub-pixels P2 and P3 adjacent to the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is n3.

[0125] n2 ≤ n1, that is, the length of the second branch 430 in the second direction Y is greater than or equal to the length of the sub-pixel P1 in the second direction Y, that is, the length of the second branch 430 in the second direction Y is longer. The longer the length of the second branch 430 in the second direction Y means that the length of the gap q3 between the touch electrodes 300d and 300e in the third direction Z1 is larger, effectively reducing the risk of short circuit between the touch electrodes 300d and 300e. And n1 ≤ n3, that is, the length of the second branch 430 in the second direction Y is less than or equal to the pitch between the sub-pixels P2 and P3, avoiding the length of the second branch 430 in the second direction Y from being too large, that is, avoiding the length of the gap q3 between the touch electrodes 300d and 300e in the third direction Z1 from being too large, thereby reducing the impact on the touch sensitivity of the touch display panel. In the present application, n2 ≤ n1 ≤ n3, realizing effectively reducing the risk of short circuit between the touch electrodes 300d and 300e while having a small impact on the touch sensitivity of the touch display panel.

[0126] Figure 33 is a schematic plan view of another touch display panel provided by the present invention, Figure 34 is Figure 33 an enlarged schematic view of the T part in the touch display panel described above, referring to Figure 33 and Figure 34 , in some alternative embodiments, the touch lead 400 includes a second branch 430. The second branch 430 is located within the gap q3 between two adjacent touch electrodes 300d, 300e arranged along the third direction Z1. The second branch 430 is located at the disconnection of the touch electrodes 300d and 300e. The second branch 430 located at the disconnection of the touch electrodes 300d and 300e includes a third part 431 and a fourth part 432. Among them, the third part 431 extends along the first direction X, and the fourth part 432 extends along the second direction Y, that is, the length of the third part 431 in the first direction X and the length of the fourth part 432 in the second direction Y are both proportional to the length of the gap q3 between the touch electrodes 300d and 300e in the third direction Z1.

[0127] In the first direction X, the length of the third part 431 is H1. In the first direction X, the length of the sub-pixel P1 between two adjacent touch electrodes 300d, 300e arranged along the third direction Z1 is h1. In the first direction X, the pitch between two sub-pixels P2, P3 adjacent to the sub-pixel P1 between two adjacent touch electrodes 300d, 300e arranged along the third direction Z1 is h2.

[0128] In the second direction Y, the length of the fourth division 432 is H2. In the second direction Y, the length of the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is h3. In the second direction Y, the distance between two adjacent sub-pixels P2' and P3' adjacent to the sub-pixel P1 between two adjacent touch electrodes 300d and 300e arranged along the third direction Z1 is h4.

[0129] That is, the length of the third division 431 in the first direction X is greater than or equal to half of the length of the sub-pixel P1 in the first direction X, that is, the length of the third division 431 in the first direction X is longer. That is, the length of the fourth division 432 in the second direction Y is greater than or equal to half of the length of the sub-pixel P1 in the second direction Y, that is, the length of the fourth division 432 in the second direction Y is longer. The longer the length of the third division 431 in the first direction X and the longer the length of the fourth division 432 in the second direction Y mean that the length of the gap q3 between the touch electrode 300d and the touch electrode 300e in the third direction Z1 is larger, effectively reducing the risk of short circuit between the touch electrode 300d and the touch electrode 300e. And That is, the length of the third division 431 in the first direction X is less than or equal to the distance between the sub-pixel P2 and the sub-pixel P3, avoiding the length of the third division 431 in the first direction X from being too large. That is, the length of the fourth division 432 in the second direction Y is less than or equal to the distance between the sub-pixel P2' and the sub-pixel P3', avoiding the length of the fourth division 432 in the second direction Y from being too large. Avoiding the length of the third division 431 in the first direction X from being too large and avoiding the length of the fourth division 432 in the second direction Y from being too large means avoiding the length of the gap q3 between the touch electrode 300d and the touch electrode 300e in the third direction Z1 from being too large, thereby reducing the impact on the touch sensitivity of the touch display panel. In this application, While having a small impact on the touch sensitivity of the touch display panel, effectively reduce the risk of short circuit between the touch electrode 300d and the touch electrode 300e.

[0130] Figure 35 is Figure 29 Another enlarged schematic diagram of the R part in the touch display panel described above, Figure 36 is Figure 35 A cross-sectional view of the touch display panel along U-U', referring to Figure 35 and Figure 36 , in some alternative embodiments, the touch display panel further includes an array layer 10. The array layer 10 is located between the substrate 100 and the touch layer 20. The array layer 10 includes a third metal layer 500.

[0131] In the third direction Z1, a plurality of second dummy lines 620 are provided between two adjacent touch electrodes 300d and 300e. The second dummy lines 620 include a first dummy sub - part 621 extending along the first direction X and a second dummy sub - part 622 extending along the second direction Y. In the direction perpendicular to the plane of the substrate 100, both ends of the first dummy sub - part 621 overlap with the adjacent touch electrodes 300 respectively, and both ends of the second dummy sub - part 622 overlap with the adjacent touch electrodes 300 respectively. The second dummy lines 620 do not overlap with the sub - pixels P. The material of the second dummy lines 620 is also a metal material. The second dummy lines 620 are arranged at the disconnection between two adjacent touch electrodes 300d and 300e in the third direction Z1, which is beneficial to solving the problem that the pattern of the touch electrode 300 is visible due to the large distance between two adjacent touch electrodes 300d and 300e in the third direction Z1. Optionally, in the third direction Z1, the area where the touch lead 400 is provided between two adjacent touch electrodes 300d and 300e does not need to be provided with the second dummy lines 620.

[0132] The second dummy lines 620 are located in the third metal layer 500 of the array layer 10, and there is no need to additionally provide a metal layer for forming the second dummy lines 620, which effectively reduces the thickness of the touch display panel, reduces the process, and reduces the production cost. Optionally, the third metal layer 500 can be a gate metal layer, the third metal layer 500 can also be a source - drain metal layer, or other metal layers in the array layer 10, which will not be elaborated in this invention.

[0133] It should be noted that, in this embodiment, it is exemplarily shown that a plurality of second dummy lines 620 are provided between the touch electrode 300d and the touch electrode 300e in the touch display panel. In other embodiments of the present invention, the second dummy lines 620 can be provided or not provided between two adjacent touch electrodes 300 in the third direction Z1 at other positions in the touch display panel. That is, in the touch display panel, the second dummy lines 620 can be provided between any two adjacent touch electrodes 300 in the third direction Z1, or the second dummy lines 620 can be provided between any two adjacent touch electrodes 300 in the third direction Z1 in some areas. The present invention does not limit this.

[0134] In some alternative embodiments, please refer to Figure 37 , Figure 37 is a schematic plan view of a display device provided by the present invention. The display device 0000 provided in this embodiment includes the touch display panel 1000 provided in the above - mentioned embodiment of the present invention. Figure 37The embodiments are described by taking a mobile phone as an example for the display device 0000. It can be understood that the display device 0000 provided by the embodiments of the present invention can also be other display devices 0000 with a display function, such as a computer, a television, a vehicle-mounted display device, etc. The present invention does not make specific limitations thereto. The display device 0000 provided by the embodiments of the present invention has the beneficial effects of the touch display panel 1000 provided by the embodiments of the present invention. For specific descriptions of the touch display panel 1000, reference can be made to the above embodiments, and details are not described herein again.

[0135] As can be seen from the above embodiments, the touch display panel and the display device provided by the present invention achieve at least the following beneficial effects:

[0136] The touch display panel provided by the present invention includes a plurality of touch electrodes and a plurality of touch leads. The touch electrodes include first electrode lines extending in a first direction and second electrode lines extending in a second direction, and the first direction intersects the second direction. The touch electrodes are a grid structure formed by a plurality of first electrode lines and a plurality of second electrode lines. The touch leads include first routing portions extending in the first direction. The first electrode lines and the first routing portions both extend in the first direction. The first electrode lines are located in a second metal layer, and at least a part of the first routing portions are located in a first metal layer. In a direction perpendicular to the plane of the substrate, at least a part of the first routing portions overlap with at least a part of the first electrode lines. The part of the first routing portions located in the first metal layer overlaps with at least a part of the first electrode lines. Since at least a part of the first routing portions overlap with at least a part of the first electrode lines in a direction perpendicular to the plane of the substrate, the shielding of the light emitted by the touch display panel by the touch leads provided in the touch display panel can be reduced, and the influence on the display effect of the touch display panel is reduced. And since the material of the touch leads is metal and has the characteristic of reflecting light, at least a part of the first routing portions overlap with at least a part of the first electrode lines in a direction perpendicular to the plane of the substrate, and the problem of the visibility of the touch lead patterns caused by the touch leads provided in the touch display panel can be alleviated.

[0137] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A touch display panel, characterized in that, comprising: a substrate; a touch layer located on one side of the substrate, the touch layer including a first metal layer, an insulating layer, and a second metal layer stacked in sequence; a plurality of touch electrodes located on the second metal layer, the touch electrodes including first electrode lines extending in a first direction and second electrode lines extending in a second direction, the first direction intersecting the second direction; a plurality of touch leads, the touch electrodes being electrically connected to the corresponding touch leads; the touch leads include first routing portions extending in the first direction, in a direction perpendicular to the plane of the substrate, the first routing portions at least partially overlap with the first electrode lines, and the first routing portions are at least partially located in the first metal layer; the touch display panel further includes a plurality of sub-pixels; among the touch electrodes, a plurality of the first electrode lines and a plurality of the second electrode lines intersect to define a plurality of meshes, at least one of the meshes vertically projects around at least one of the sub-pixels on the substrate; in the first direction, the length of the gap between two adjacent touch electrodes arranged along the first direction is d1; in the first direction, the length of the sub-pixel located between two adjacent touch electrodes arranged along the first direction is d2; wherein, d2≤d1.

2. The touch display panel according to claim 1, characterized in that, the first metal layer is located on the side of the insulating layer close to the substrate; the touch leads include first touch leads located in the first metal layer, the touch electrodes include first touch electrodes, the area where the first touch electrodes are located is a first area, within the first area, the first electrode lines of the first touch electrodes cover the first routing portions of the first touch leads in a direction perpendicular to the plane of the substrate.

3. The touch display panel according to claim 1, characterized in that, the touch leads include second touch leads located in the first metal layer; the touch electrodes include second touch electrodes, one of the second touch electrodes includes at least two adjacent first electrode lines arranged along the first direction, a first gap is included between the adjacent two first electrode lines, in a direction perpendicular to the plane of the substrate, the first routing portions of the second touch leads overlap with the first gap.

4. The touch display panel according to claim 1, characterized in that, the touch leads include third touch leads, and the first routing portions of the third touch leads are partially located in the second metal layer.

5. The touch display panel according to claim 4, characterized in that, the first metal layer is located on the side of the insulating layer close to the substrate, and the width of the touch leads is greater than or equal to the width of the first electrode lines.

6. The touch display panel according to claim 4, characterized in that, The first trace portion in the third touch lead includes a first sub-portion and a second sub-portion that are electrically connected. The first sub-portion is located in the first metal layer, and the second sub-portion is located in the second metal layer; The touch electrode includes a third touch electrode. At least two adjacent second electrode lines arranged along the second direction are included in one third touch electrode. A second gap is included between the two adjacent second electrode lines. In a direction perpendicular to the plane of the substrate, the second sub-portion overlaps with the second gap, and the second sub-portion does not overlap with the third touch electrode; In a direction perpendicular to the plane of the substrate, the third touch electrode partially overlaps with the first sub-portion.

7. The touch display panel according to claim 6, wherein, In a direction perpendicular to the plane of the substrate, only one electrode line in at least one third touch electrode overlaps with the first sub-portion.

8. The touch display panel according to claim 4, wherein, The touch display panel includes at least one bending region. A portion of the touch display panel located in the bending region is bendable, and the bending region includes the third touch lead.

9. The touch display panel according to claim 4, wherein, The touch display panel includes a display region. The display region includes a first display region that bends in a direction away from the light-emitting side of the touch display panel, and the first display region includes the third touch lead.

10. The touch display panel according to claim 1, wherein, In a direction perpendicular to the plane of the substrate, the touch lead does not overlap with the sub-pixel.

11. The touch display panel according to claim 10, wherein, The touch electrodes are arranged in an array along the first direction and the second direction; In the first direction, the distance between two sub-pixels adjacent to the sub-pixel between two adjacent touch electrodes arranged along the first direction is d3, and d1 ≤ d3.

12. The touch display panel according to claim 11, wherein, The touch display panel further includes an array layer. The array layer is located between the substrate and the touch layer, and the array layer includes a third metal layer; In the first direction, a plurality of first dummy lines are provided between two adjacent touch electrodes. The first dummy lines extend along the first direction. In a direction perpendicular to the plane of the substrate, both ends of the first dummy lines respectively overlap with the touch electrodes close to them, and the first dummy lines do not overlap with the sub-pixels; The first dummy lines are located in the third metal layer.

13. The touch display panel according to claim 10, wherein, The touch electrodes are arranged in an array along the first direction and the second direction; The touch lead includes a first branch and a second branch connected to each other. The second branch is connected between two adjacent first branches along the first direction, and the second branch is located in the gap between two adjacent touch electrodes arranged along the first direction; Along the direction perpendicular to the plane of the substrate, the second branch does not overlap with the touch electrode; The second branch includes two first parts respectively connected to different first branches, and a second part connecting the two first parts. One end of the first part is connected to the second part, and the other end of the first part is connected to the first branch; The second part extends along the first direction, and the first part extends along the second direction; The vertical projection of the second branch on the substrate at least partially surrounds the vertical projection of one sub-pixel on the substrate.

14. The touch display panel according to claim 13, wherein, the touch display panel includes a plurality of sub-pixel rows arranged along the first direction, and the sub-pixel rows include a plurality of sub-pixels arranged along the second direction; The sub-pixel rows include a first sub-pixel row and a second sub-pixel row. Along the first direction, the first sub-pixel row and the second sub-pixel row are arranged at intervals. In the first direction, one sub-pixel in the first sub-pixel row overlaps with two adjacent sub-pixels in the second sub-pixel row.

15. The touch display panel according to claim 10, wherein, the touch electrodes are arranged in an array along a third direction and a fourth direction. The third direction intersects with the fourth direction, and the third direction intersects with both the first direction and the second direction. The fourth direction intersects with both the first direction and the second direction; The touch lead further includes a second trace portion extending along the second direction. Along the direction perpendicular to the plane of the substrate, the second trace portion at least partially overlaps with the second electrode line.

16. The touch display panel according to claim 15, wherein, the touch lead includes a second branch, the second branch is located in the gap between two adjacent touch electrodes arranged along the third direction, and the second branch extends along the first direction; In the first direction, the length of the second branch is m1; In the first direction, the length of the sub-pixel located between two adjacent touch electrodes arranged along the third direction is m2; In the first direction, the distance between two sub-pixels adjacent to the sub-pixel located between two adjacent touch electrodes arranged along the third direction is m3; wherein, m2 ≤ m1 ≤ m3.

17. The touch display panel according to claim 15, wherein, the touch lead includes a second branch, the second branch is located in the gap between two adjacent touch electrodes arranged along the third direction, and the second branch extends along the second direction; In the second direction, the length of the second branch is n1; In the second direction, the length of the sub-pixel located between two adjacent touch electrodes arranged along the third direction is n2; In the second direction, the distance between two sub-pixels adjacent to the sub-pixel located between two adjacent touch electrodes arranged along the third direction is n3; Wherein, n2 ≤ n1 ≤ n3.

18. The touch display panel according to claim 15, Characterized in that, The touch lead includes a second branch, the second branch is located in the gap between two adjacent touch electrodes arranged along the third direction, and the second branch includes a third part extending along the first direction and a fourth part extending along the second direction; In the first direction, the length of the third part is H1; In the first direction, the length of the sub-pixel located between two adjacent touch electrodes arranged along the third direction is h1; In the first direction, the distance between two sub-pixels adjacent to the sub-pixel located between two adjacent touch electrodes arranged along the third direction is h2; Among them, In the second direction, the length of the fourth part is H2; In the second direction, the length of the sub-pixel located between two adjacent touch electrodes arranged along the third direction is h3; In the second direction, the distance between two sub-pixels adjacent to the sub-pixel located between two adjacent touch electrodes arranged along the third direction is h4; Among them, 19. The touch display panel according to any one of claims 16-18, Characterized in that, The touch display panel further includes an array layer, the array layer is located between the substrate and the touch layer, and the array layer includes a third metal layer; In the third direction, a plurality of second dummy lines are provided between two adjacent touch electrodes, the second dummy line includes a first dummy sub-part extending along the first direction and a second dummy sub-part extending along the second direction, and in a direction perpendicular to the plane of the substrate, the two ends of the first dummy sub-part respectively overlap with the touch electrodes close to it, the two ends of the second dummy sub-part respectively overlap with the touch electrodes close to it, and the second dummy line does not overlap with the sub-pixel; The second dummy line is located in the third metal layer.

20. A display device, Characterized in that, It includes the touch display panel according to any one of claims 1-19.

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