Touch structure, touch display panel and display apparatus

Abstract

A touch structure, a touch display panel and a touch apparatus, relating to the technical field of touch. An peripheral area of the touch structure comprises an edge area surrounding a touch area and a leading-out area extending outwards from a local area of the edge area, the leading-out area being provided with a binding part. The touch structure comprises touch electrodes located in the touch area and leads located in the peripheral area, the touch electrodes being connected to the binding part by means of the leads. The touch electrodes comprise first touch electrodes and second touch electrodes, the first touch electrodes extending in a first direction and being distributed at intervals in a second direction, the second touch electrodes extending in the second direction and being distributed at intervals in the first direction, and the first touch electrodes being insulated from the second touch electrodes. The leads comprise first leads and second leads, the first touch electrodes being connected to the binding part by means of the first leads, and the second touch electrodes being connected to the binding part by means of the second leads. At least part of the first leads comprise main body parts and narrowing parts, and the cross section of at least part of each narrowing part is smaller than that of a main body part.

Description

Touch structure, touch display panel and display device Technical Field

[0001] The present disclosure relates to the field of touch technology, and in particular to a touch structure, a touch display panel, and a display device. Background Art

[0002] Touch display panels have been widely used in terminal devices such as mobile phones and tablets. While displaying images, they can realize human-computer interaction through touch operation. The touch position is determined by the change of sensing capacitance to realize touch operation. However, the touch accuracy of existing touch display panels is limited.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] The present disclosure provides a touch structure, a touch display panel, and a display device.

[0006] According to one aspect of the present disclosure, a touch structure is provided, comprising a touch area and a peripheral area outside the touch area, wherein the peripheral area includes an edge area surrounding the touch area and a lead-out area extending outward from a portion of the edge area, wherein the lead-out area has a binding portion;

[0007] The touch structure includes touch electrodes located in the touch area and leads located in the peripheral area, the touch electrodes being connected to the binding portion via the leads; the touch electrodes including a plurality of first touch electrodes and a second touch electrode, the first touch electrodes extending along a first direction and being spaced apart along a second direction; the second touch electrodes extending along the second direction and being spaced apart along the first direction; the first direction and the second direction intersecting; the first touch electrodes and the second touch electrodes being insulated from each other; the leads including a plurality of first leads and a second lead, the first touch electrodes being connected to the binding portion via the first leads, and the second touch electrodes being connected to the binding portion via the second leads;

[0008] At least a portion of the first lead includes a main portion and a narrowed portion connected along an extension path thereof, and a cross-section of at least a portion of the narrowed portion is smaller than a cross-section of the main portion.

[0009] In an exemplary embodiment of the present disclosure, the lead comprises multiple layers of wire bodies spaced apart, and the wire bodies of the same lead overlap; at least a portion of the wire bodies of the first lead have a break;

[0010] The wire body cut off by the break includes a plurality of line segments divided by the break, and each of the line segments is connected to an adjacent wire body through a contact hole, so that the wire body cut off by the break is connected in parallel with the adjacent wire body;

[0011] The portion of the first lead corresponding to the line segment is the main body; the portion of the first lead between the two contact holes connecting the two ends of the same break is the narrowed portion.

[0012] In an exemplary embodiment of the present disclosure, the touch structure further includes a dummy line body, which is located in the fracture. The dummy line body is provided in the same layer as the line body where the fracture is located and is floating.

[0013] In an exemplary embodiment of the present disclosure, the distance between the contact hole and the fracture closest thereto is greater than the length of the fracture.

[0014] In an exemplary embodiment of the present disclosure, the distance between the contact hole and the fracture closest thereto is less than or equal to the length of the fracture.

[0015] In an exemplary embodiment of the present disclosure, at least two first leads of different lengths have the narrowed portion; among the two first leads of different lengths, the narrowed portion of the first lead with a larger length is shorter than the narrowed portion of the first lead with a smaller length.

[0016] In an exemplary embodiment of the present disclosure, the narrowed portions are all located in the edge region, and the distances between each narrowed portion and the lead-out region in the second direction are equal.

[0017] In an exemplary embodiment of the present disclosure, the narrowed portions are all located in the edge area; and the distance between each narrowed portion and the lead-out area in the second direction increases or decreases in a direction away from the touch area.

[0018] In an exemplary embodiment of the present disclosure, the lead-out area and the touch area are distributed along the second direction; the first lead lines are connected to the first touch electrodes from the same side of the touch area and are spaced apart in a direction away from the touch area;

[0019] Each of the first leads can be divided into a first type of lead, a second type of lead and a third type of lead distributed in a direction away from the touch area; a partial area of ​​the first type of lead extends along the first direction between the touch area and the lead-out area; the narrowing portion is provided on the second type of lead; the length of the third type of lead is greater than the length of the second type of lead, and greater than or equal to the length of the first type of lead.

[0020] In an exemplary embodiment of the present disclosure, the lead-out area and the touch area are distributed along the second direction; the first lead lines are connected to the first touch electrodes from the same side of the touch area and are spaced apart in a direction away from the touch area;

[0021] Each of the first leads can be divided into a first type of lead, a second type of lead and a third type of lead distributed in a direction away from the touch area; a partial area of ​​the first type of lead extends along the first direction between the touch area and the lead-out area; the narrowing portion is provided on the first type and the second type of lead; the length of the third type of lead is greater than the length of the second type of lead, and greater than or equal to the length of the first type of lead.

[0022] In an exemplary embodiment of the present disclosure, the lead-out area and the touch area are distributed along the second direction; each of the first lead lines is connected to the first touch electrode from the same side of the touch area and is spaced apart in a direction away from the touch area; and the second lead line is located between the touch area and the binding portion;

[0023] At least one first lead line crosses and is insulated from at least one second lead line.

[0024] In an exemplary embodiment of the present disclosure, the outline of the touch area includes four sides and a rounded corner connecting two adjacent sides; the sides include a first side and a second side extending along the first direction, and a third side and a fourth side extending along the second direction; the first side and the second side are distributed in a direction away from the lead-out area, and the third side and the fourth side are distributed along the first direction; the rounded corner connecting the first side and the third side is a first rounded corner;

[0025] In a direction away from the lead-out area, the first of the first touch electrodes is a first target electrode, an edge of the first target electrode close to the lead-out area is located at the first side, and an edge of one end of the first target electrode away from the fourth side is located at the first rounded corner; a first lead connected to the first target electrode is a first target lead;

[0026] In a direction extending away from the third side toward the fourth side, the first of the second touch electrodes is a second target electrode, an edge of the second target electrode away from the fourth side is located on the third side, and an edge of the second target electrode close to one end of the lead-out region is located at the first rounded corner; a second lead connected to the second target electrode is a second target lead;

[0027] The first target lead is crossed with and insulated from the second target lead.

[0028] In an exemplary embodiment of the present disclosure, at least one isolation line is provided between at least a partial region of the first target lead and at least a partial region of the second target lead.

[0029] In an exemplary embodiment of the present disclosure, a dummy lead is provided between at least one of the isolation lines and a local area of ​​the second target lead.

[0030] In an exemplary embodiment of the present disclosure, the wire body of the lead wire includes a first wire body and a second wire body;

[0031] The first touch electrode includes a plurality of first electrode blocks connected in series along the first direction; the second touch electrode includes a plurality of first electrode blocks distributed along the second direction and a transfer bridge connecting two adjacent second electrode blocks; the transfer bridge is arranged to cross the first touch electrode;

[0032] The switching bridge and the first wire body are arranged on the same layer; the first electrode block, the second electrode and the second wire body are arranged on the same layer.

[0033] In an exemplary embodiment of the present disclosure, the touch structure includes:

[0034] A first conductive layer, including the first wire body and the transfer bridge;

[0035] an insulating isolation layer, covering the first conductive layer;

[0036] The second conductive layer is provided on a surface of the insulating layer and the isolation layer away from the first conductive layer, and includes the first electrode block, the second electrode and the second wire body.

[0037] In an exemplary embodiment of the present disclosure, the lead further includes a plurality of third leads, the second touch electrode is further connected to the binding portion through the third leads, and one end of a third lead is connected to an end of the second touch electrode away from the lead-out area, and the other end is connected to the binding portion.

[0038] According to one aspect of the present disclosure, a touch display panel is provided, comprising:

[0039] Display substrate:

[0040] Any of the above touch control structures is provided on one side of the display substrate.

[0041] According to one aspect of the present disclosure, a touch display panel is provided, comprising:

[0042] Driver backplane;

[0043] A plurality of light-emitting devices are provided on one side of the driving backplane;

[0044] an encapsulation layer, covering each of the light-emitting devices;

[0045] A touch structure is provided on a surface of the packaging layer away from the driver backplane; the touch structure includes a touch area and a peripheral area outside the touch area, the peripheral area includes an edge area surrounding the touch area and a lead area extending outward from a portion of the edge area, the lead area having a binding portion; the touch structure includes a plurality of leads located in the peripheral area;

[0046] At least one of the leads includes a first wire body and a second wire body; the orthographic projections of the first wire body and the second wire body on the driving backplane overlap and are connected in parallel;

[0047] The first wire body includes at least one discontinuous portion, and the discontinuous portion divides the first wire body into a plurality of first sub-lead portions;

[0048] The second line body includes at least one continuous sub-lead portion, and the orthographic projection of the continuous sub-lead layer on the driving backplane is a continuous structure; the discontinuous portion overlaps with the orthographic projection of the continuous sub-lead portion on the driving backplane.

[0049] In an exemplary embodiment of the present disclosure, the plurality of leads include a first type of lead and a second type of lead distributed in the peripheral area in a direction away from the touch area; the length of the first type of lead is greater than or equal to the length of the second type of lead;

[0050] The second type of lead wire includes the first wire body and the second wire body;

[0051] The first type of leads include a third wire body and a fourth wire body connected in parallel. The orthographic projections of the third wire body and the fourth wire body on the driving backplane are continuous structures, and the orthographic projections overlap.

[0052] In an exemplary embodiment of the present disclosure, the multiple leads also include a third type of lead, which is arranged on a side of the second type of lead away from the touch area; the length of the third type of lead is greater than or equal to the length of the second type of lead; the third type of lead includes a fifth wire body and a sixth wire body connected in parallel, and the orthographic projections of the fifth wire body and the sixth wire body on the driving backplane are a continuous structure, and the orthographic projections overlap.

[0053] According to one aspect of the present disclosure, a display device is provided, comprising any one of the touch display panels described above.

[0054] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0056] FIG1 is a schematic diagram of various regions of an embodiment of a touch structure disclosed herein.

[0057] FIG2 is a top view of an embodiment of the touch structure disclosed herein.

[0058] FIG3 is a top view of another embodiment of the touch structure disclosed herein.

[0059] FIG4 is a partial view of FIG3.

[0060] FIG5 is an enlarged view of portion A in FIG3 .

[0061] FIG. 6 is an enlarged view of portion B in FIG. 3 in the first embodiment.

[0062] FIG7 is a CC cross-sectional view of FIG6 .

[0063] FIG8 is a cross-sectional view taken along line FF of FIG6 .

[0064] FIG9 is a cross-sectional view taken along line GG in FIG6 .

[0065] FIG. 10 is an enlarged view of portion B in FIG. 3 in two embodiments.

[0066] FIG11 is a DD cross-sectional view of FIG10 .

[0067] FIG12 is an enlarged view of portion B in FIG3 in three embodiments.

[0068] FIG13 is a cross-sectional view taken along line EE in FIG12 .

[0069] FIG. 14 is an enlarged view of portion B in FIG. 3 in four embodiments.

[0070] FIG. 15 is an enlarged view of portion B in FIG. 3 in five embodiments.

[0071] FIG16 is a partial cross-sectional view of an embodiment of a touch display panel disclosed herein. DETAILED DESCRIPTION

[0072] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0073] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0074] Herein, the overlap of "A" and "B" means that there is an overlapping area between the orthographic projections of "A" and "B" on the same plane, but it is not limited to complete overlap and can be partial overlap.

[0075] In this article, "A" and "B" are arranged in the same layer, which means that "A" and "B" are different areas of the same film layer. A" and "B" can extend along the same plane or be located in two different planes.

[0076] In related art, a touch display panel can be divided into a display area and a peripheral area outside the display area. A touch display panel includes a display substrate and a touch layer disposed on one side of the display substrate. The touch layer includes multiple touch electrodes for sensing touch operations, and the touch electrodes are located within the display area. To transmit signals, the peripheral area is provided with leads connecting to the touch electrodes. These leads are connected to a binding portion in the peripheral area, which can be connected to a control chip or a peripheral driver circuit board through the binding portion to transmit touch signals. However, due to the different positions of the touch electrodes, the lengths of the leads connecting different touch electrodes to the binding portion vary. This results in significant differences in load on different leads, poor uniformity, and significant differences in signal impedance, which can easily affect touch accuracy. In some embodiments, the lead paths can be extended by winding to make the lengths of different leads more consistent. However, due to the limited space in the peripheral area, the wiring space for the leads is limited, making at least some leads difficult to wind, leaving touch accuracy still to be improved.

[0077] Based on the above solution, embodiments of the present disclosure provide a touch structure that can be disposed on a display substrate to form a touch display panel for human-computer interaction. As shown in Figures 1-3 , the touch structure can be divided into at least a touch area TA and a peripheral area WA. The peripheral area WA is located outside the touch area TA and includes an edge area EA surrounding the touch area TA and an outgoing area FA extending outward from a portion of the edge area EA. The outgoing area FA includes a binding portion BA.

[0078] The touch structure may include touch electrodes located in the touch area TA and leads located in the peripheral area WA. Each touch electrode is connected to the binding portion BA via at least one lead for signal transmission. The touch electrodes may include a plurality of first touch electrodes Rx and second touch electrodes Tx. The first touch electrodes Rx extend along a first direction X and are spaced apart along a second direction Y. The second touch electrodes Tx extend along the second direction Y and are spaced apart along the first direction X. The first direction X and the second direction Y intersect. The first touch electrodes Rx are insulated from the second touch electrodes Tx. The leads include a plurality of first leads RL and second leads TL1. The first touch electrodes Rx are connected to the binding portion BA via the first leads RL, and the second touch electrodes Tx are connected to the binding portion BA via the second leads TL1.

[0079] It should be noted that the first direction X and the second direction Y herein are merely two intersecting directions, for example, perpendicular to each other. Although the drawings illustrate the first direction X as being horizontal and the second direction Y as being vertical, this is not limiting. The first direction X and the second direction Y may be in other directions, or they may be interchangeable. Persons skilled in the art will appreciate that the actual orientations of the first direction X and the second direction Y may change as the touch structure rotates.

[0080] As shown in FIG6 to FIG13 , at least a portion of the first lead RL includes a main portion RLm and a narrowed portion RLs connected along its extension path. At least a portion of the narrowed portion RLs has a smaller cross-section than that of the main portion RLm.

[0081] The touch-sensing structure of the disclosed embodiment transmits a drive signal to the second touch electrode Tx via the binding portion BA and the second lead TL1, and receives a sensing signal via the first touch electrode Rx and the first lead RL. The sensing signal then determines the touch position based on changes in the drive signal. Of course, the first touch electrode Rx and the first lead RL can also transmit a drive signal, while the second lead TL1 and the second touch electrode Tx can also transmit a sensing signal, similarly enabling touch position determination. Thus, the touch-sensing structure implements touch functionality.

[0082] In the aforementioned touch-sensing structure, at least a portion of the first leads RL has a narrowed cross-section, namely, a narrowed portion RLs having a smaller cross-section than the main portion RLm. This allows the resistance of the first leads RL within the narrowed portion RLs to be increased without increasing the length of the first leads RL. Even when space in the peripheral area WA is limited, increasing the resistance of some of the first leads RL can still improve the uniformity of the resistance of each first lead RL, thus preventing significant resistance variations between different first leads RL from affecting touch accuracy.

[0083] The touch structure of the present disclosure is described in detail below:

[0084] As shown in Figures 1-3, the touch structure can be divided into a touch area TA and a peripheral area WA. The touch area TA is used to sense touch operations, while the peripheral area WA can be the area surrounding the touch area TA. Furthermore, the peripheral area WA can include an edge area EA and a lead-out area FA. The edge area EA can be arranged around the touch area TA, while the lead-out area FA can extend outward from a portion of the edge area EA. Furthermore, the lead-out area FA can have a binding portion BA, which can be connected to a driver chip or an external circuit board to transmit drive signals and sensing signals that implement the touch function.

[0085] The touch structure of the present disclosure may adopt a mutual capacitance structure. As shown in FIG2 to FIG4 , a plurality of touch electrodes may be provided in the touch area TA. The touch electrodes may include a plurality of first touch electrodes Rx and a plurality of second touch electrodes Tx that are insulated from each other, wherein:

[0086] As shown in FIG4 , any first touch electrode Rx may extend along a first direction X, and the first touch electrodes Rx may be spaced apart along a second direction Y. Simultaneously, any second touch electrode Tx may extend along the second direction Y, and the second touch electrodes Tx may be spaced apart along the first direction X. Each first touch electrode Rx intersects with each second touch electrode Tx, and each second touch electrode Tx intersects with each first touch electrode Rx. However, the intersecting first touch electrodes Rx and second touch electrodes Tx are insulated from each other.

[0087] When implementing the touch function, a driving signal can be input to the second touch electrode Tx, and capacitance can be generated between the first touch electrode Rx and the second touch electrode Tx. When the touch area TA is touched, the capacitance of the touch position changes, and the touch position can be determined by detecting the sensing signal of the first touch electrode Rx.

[0088] In some embodiments of the present disclosure, as shown in FIG4 , each of the first touch electrodes Rx and the second touch electrodes Tx may be formed by connecting a plurality of electrode blocks in series. Specifically:

[0089] A first touch electrode Rx may include a plurality of first electrode blocks Rxc connected in series along a first direction X. Two adjacent first electrode blocks Rxc may be connected by a connecting portion CP, which is provided on the same layer as the first electrode blocks Rxc. The outline of the first electrode block Rxc may be a polygon such as a rhombus, or other shapes.

[0090] A second touch electrode Tx may include multiple second electrode blocks Txc distributed along a second direction Y and a transfer bridge BR connecting two adjacent second electrode blocks Txc. The outline of the second electrode block Txc may be a polygon such as a rhombus, or other shapes, and the shape of the second electrode block Txc may be the same as that of the first electrode block Rxc. The transfer bridge BR and the second electrode block Txc are located on different layers and may be connected via vias. The second electrode block Txc is arranged on the same layer as the first electrode block Rxc. Because the transfer bridge BR, the first electrode block Rxc, and the second electrode block Txc are located on different layers, the transfer bridge BR can intersect with the connection portion CP in space without contacting it, thereby achieving intersecting and insulating the first touch electrode Rx and the second touch electrode Tx.

[0091] Furthermore, in the same second touch electrode Tx, the number of transfer bridges BR connecting two adjacent second electrode blocks Txc may be one or more. If there are multiple transfer bridges BR, the multiple transfer bridges BR may be distributed side by side along the first direction X and all cross the same connection portion CP in space.

[0092] As shown in FIG7 to FIG9, FIG11, FIG13 and FIG16, the touch structure may include a first conductive layer TMA, an insulating isolation layer TLD and a second conductive layer TMB, wherein:

[0093] The first conductive layer TMA may include a transfer bridge BR of the second touch electrode Tx. The first conductive layer TMA may be a single-layer or multi-layer structure. For example, the first conductive layer TMA may include two outer layers and an intermediate layer located between the two outer layers. The material of the outer layer may be titanium, and the material of the intermediate layer may be aluminum, that is, the first conductive layer TMA is a Ti / Al / Ti structure; or, the material of the outer layer may be indium tin oxide (ITO), and the material of the intermediate layer may be aluminum, that is, the first conductive layer TMA is an ITO / Ag / ITO structure.

[0094] The insulating isolation layer TLD covers the first conductive layer TMA, and its material may be silicon nitride. Of course, it may also be other inorganic insulating materials such as silicon oxide, silicon oxynitride, or organic insulating materials.

[0095] The second conductive layer TMB may be disposed on a surface of the insulating layer isolation layer away from the first conductive layer TMA. The second conductive layer TMB may include a first electrode block Rxc and a second electrode block Txc. The second conductive layer TMB may have a single-layer or multi-layer structure. If a multi-layer structure is used, the second conductive layer TMB may also have the aforementioned Ti / Al / Ti structure or ITO / Ag / ITO structure.

[0096] In some embodiments of the present disclosure, as shown in Figures 7-9, 11, 13, and 16, the touch structure may further include a buffer layer TBU and a protective layer TOC. The buffer layer TBU may serve as the substrate of the touch structure and may be made of insulating materials such as silicon nitride and silicon oxide. A first conductive layer TMA may be provided on one side of the buffer layer TBU, and the protective layer TOC may cover the second conductive layer TMB. The protective layer TOC is used to protect the second conductive layer TMB and may be made of a transparent insulating material such as polyimide (PI) or optical adhesive.

[0097] The first touch electrodes Rx and the second touch electrodes Tx may both be a mesh structure formed by a plurality of mesh lines. The mesh structure has a plurality of mesh holes, and each mesh hole is surrounded by a plurality of mesh lines.

[0098] In other embodiments of the present disclosure, the transfer bridge BR in the above embodiment may also be located in the second conductive layer TMB, and the first electrode block Rxc and the second electrode block Txc may also be located in the first conductive layer TMA.

[0099] As shown in Figures 2-4 , to facilitate signal transmission between the first touch electrodes Rx and the second touch electrodes Tx, the first touch electrodes Rx and the second touch electrodes Tx may be connected to the binding portion BA via multiple leads. Each lead may include multiple first leads RL and multiple second leads TL1. Each first lead RL may be connected to each first touch electrode Rx in a one-to-one correspondence, and each first lead RL is connected to the binding portion BA, thereby enabling signal transmission between the binding portion BA and the first touch electrodes Rx. Each second lead TL1 may be connected to each second touch electrode Tx in a one-to-one correspondence, and each second lead TL1 is connected to the binding portion BA, thereby enabling signal transmission between the binding portion BA and the second touch electrodes Tx. The binding portion BA may include multiple pads, with each lead L connected to each pad.

[0100] Furthermore, as shown in Figures 1-3 , the lead-out area FA and the touch area TA can be distributed along the second direction Y. Each first lead line RL can connect to each first touch electrode Rx from the same side of the touch area TA and be spaced apart away from the touch area TA to prevent short circuits between adjacent first lead lines RL. Each second lead line TL1 can be located between the touch area TA and the binding portion BA and connected to the end of each second touch electrode Tx closest to the lead-out area FA. At least one first lead line RL can intersect and be insulated from at least one second lead line TL1.

[0101] The outline of the touch area TA may be defined by the edges of the first touch electrode Rx and the second touch electrode Tx in the first direction X and the second direction Y. That is, the opposite edges of the two first touch electrodes Rx that are farthest apart and the opposite edges of the two second touch electrodes Tx that are farthest apart form the edge of the touch area TA, and the edge and its extension line may form the outline of the touch area TA.

[0102] In some embodiments of the present disclosure, as shown in Figures 1 and 3, the touch area TA may have a rounded rectangular outline, which may include four sides and a rounded corner connecting two adjacent sides. The sides include a first side SL1 to a fourth side SL4. The first side SL1 and the second side SL2 may extend along a first direction X and be located away from the lead-out area FA. The second side SL2 is located on the side of the first side SL1 away from the lead-out area FA. The third side SL3 and the fourth side SL4 may extend along a second direction Y and be located along the first direction X. The rounded corner connecting the first side SL1 and the third side SL3 may be defined as a first rounded corner C1. The first lead RL may be connected to the first touch electrode Rx from the side of the third side SL3 and the first rounded corner C1 away from the fourth side SL4. The second lead TL1 may be connected to each second touch electrode Tx from the side of the first side SL1 and the first rounded corner C1 away from the second side SL2.

[0103] As shown in Figures 3 to 5, in the direction away from the lead-out area FA, the first first touch electrode Rx is the first target electrode, and the first target electrode is located on the first side SL1 close to the edge of the lead-out area FA; the first lead RL connecting the first target electrode is the first target lead RLt, and the first lead RL connecting the second first touch electrode Rx is located on the outside away from the first target lead RLt, and so on. The first lead RL connecting the nth first touch electrode Rx is located on the outside of the first lead RL connecting the n-1th first touch electrode Rx, where n is a positive integer greater than 2.

[0104] As shown in Figures 3-5 , in a direction extending away from the third side SL3 toward the fourth side SL4, the first second touch electrode Tx is a second target electrode; the second lead TL1 connected to the second target electrode is a second target lead TLt. The second lead TL1 connected to the nth second touch electrode Tx is located on a side of the first lead RL connected to the n-1th first touch electrode Rx closer to the fourth side SL4, where n is a positive integer greater than 2.

[0105] As shown in Figures 3-5 , the edge of the first target electrode away from the fourth side SL4 is located at the first rounded corner C1, that is, the edge of the first target electrode away from the fourth side SL4 is part of the first rounded corner C1. The edge of the second target electrode near the lead-out area FA is located at the first rounded corner C1, that is, the edge of the second target electrode away from the fourth side SL4 is part of the first rounded corner C1. In other words, both the first and second target electrodes extend to the first rounded corner C1, so that the edge of the second target electrode near the lead-out area FA and the edge of the first target electrode away from the fourth side SL4 are both located at the first rounded corner C1. At the same time, the edge of the second target electrode away from the fourth side SL4 is located at the third side SL3, that is, the edge of the second target electrode away from the fourth side SL4 is at least part of the third side SL3. As a result, the edge of the second target electrode near the lead-out area FA is located on the side of the edge of the first target electrode away from the fourth side SL4 that is away from the lead-out area FA.

[0106] As shown in Figures 3-5 , the binding portion BA may include a first binding area BA1 and a second binding area BA2 distributed along a first direction X. The first leads RL are all connected to the first binding area BA1, and the second leads TL1 are all connected to the second binding area BA2. Furthermore, the first and second binding areas BA1 and BA2 are located between the third side SL3 and the fourth side SL4, with the second binding area BA2 located on the side of the first binding area BA1 away from the third side SL3. To connect the first target electrode and the second target electrode without shorting, at least the first target lead RLt and the second target lead TLt intersect and are insulated from each other.

[0107] As shown in Figures 3-5, at least one isolation line is provided between at least a partial area of ​​the first target lead RLt and at least a partial area of ​​the second target lead TLt. The isolation line can receive the same signal as the first target lead RLt or the second target lead TLt, such as a pulse signal with the same frequency. However, the isolation line is not connected to any touch electrode. Since the isolation line is synchronized with the signal of the first target lead RLt or the second target lead TLt, there is no voltage difference between the isolation line and the adjacent first target electrode or second target electrode. This can prevent ion migration in the first target electrode or the second target electrode due to the voltage difference, thereby avoiding damage to the first target electrode or the second target electrode. For example:

[0108] As shown in Figure 5, the first target lead line RLt may include a lead segment RLt1, a crossing segment RLt2, and a connecting segment RLt3. The lead segment RLt1 extends from the binding portion BA into the edge area EA. The connecting segment RLt3 is arranged side by side with the lead segment RLt1 within the edge area EA and is located on the side of the lead segment RLt1 near the first rounded corner C1. The connecting segment RLt3 is connected to the first target electrode. The crossing segment RLt2 connects the lead segment RLt1 and the connecting segment RLt3. The second target lead line TLt crosses and is insulated from the crossing segment RLt2 and is connected to the second target electrode.

[0109] There can be two isolation lines, including a first isolation line GAL1 and a second isolation line GAL2. The first isolation line GAL1 intersects and insulates the intersection section RLt2. A portion of the first isolation line GAL1 is interposed between the lead section RLt1 of the first target lead RLt and the second target lead TLt, while the remaining portion is interposed between the second target lead TLt and the first lead RL closest to the first target lead RLt. The second isolation line GAL2 is positioned between the lead section RLt1 and the second target lead TLt, and also between the first isolation line GAL1 and the second target lead TLt. The second isolation line GAL2 can also be divided into multiple sections, including three sections arranged parallel to the lead section RLt1, the intersection section RLt2, and the connection section RLt3. The first isolation line GAL1 and the second isolation line GAL2 can protect the first target lead RLt, the second target lead TLt, and the first lead RL closest to the first target lead RLt.

[0110] Furthermore, in some embodiments of the present disclosure, a dummy lead DL is provided between at least one isolation line and a partial region of the second target lead TLt. For example, the dummy lead DL may be provided between the second target lead TLt and the second shielding line. The dummy lead DL is floating and at least partially co-located with the isolation lines and leads L to improve film uniformity.

[0111] Furthermore, in some embodiments of the present disclosure, as shown in Figures 3-5 , in addition to the second lead lines TL1 being located between the touch area TA and the binding portion BA, each lead line L further includes multiple third lead lines TL2. The second touch electrode Tx is further connected to the binding portion BA via the third lead lines TL2. One end of a third lead line TL2 can be connected to an end of a second touch electrode Tx away from the lead-out area FA, and the other end can be connected to the binding portion BA. In other words, the same second touch electrode Tx has two ends in the second direction Y: one end connected to the binding portion BA via the second lead line TL1, and the other end connected to the binding portion BA via the third lead line TL2. Furthermore, the binding portion BA can further include a third binding area BA3. The third binding area BA3 is distributed along the first direction X with the second binding area BA2 and the first binding area BA1. The third binding area BA3 is located on the side of the second binding area BA2 away from the first binding area BA1, and the third lead TL2 is connected to the third binding area BA3.

[0112] In other embodiments of the present disclosure, as shown in FIG2 , the third lead TL2 may not be provided, and one end of the second lead TL1 may be connected to an end of a second touch electrode Tx away from the lead-out area FA, and the other end may be connected to the binding portion BA, while the end of the second touch electrode Tx close to the lead-out area FA is no longer directly connected to the binding portion BA.

[0113] Based on the above touch sensor structure, as shown in Figures 6-13 , to improve the resistance uniformity of the first leads RL, the resistance of some first leads RL is increased by reducing their cross-sections, thereby making the resistance of each first lead RL more uniform. Specifically, at least some first leads RL include a main portion RLm and a narrowed portion RLs connected along their extension path. The narrowed portion RLs has a smaller cross-section than the main portion RLm, thereby increasing the resistance.

[0114] The following is an exemplary description of the implementation of the first lead RL:

[0115] In some embodiments of the present disclosure, each lead L may be a multi-layer structure, which may include multiple layers of wire bodies arranged at intervals, and adjacent layers of wire bodies may be separated by insulating materials. The wire bodies of the same lead overlap and have the same extension path. The wire bodies of the same lead L are connected in parallel, and the impedance is reduced by forming a lead L with multiple wire bodies. For a lead with multiple parallel wire bodies, the cross-section of the lead is the sum of the cross-sections of each wire body. If the cross-section of the wire body remains unchanged, the more wire bodies there are, the larger the cross-section of the lead is, and the smaller the impedance is. Conversely, the fewer wire bodies there are, the smaller the cross-section is, and the greater the impedance is.

[0116] As shown in Figures 6 to 13, at least a portion of the first lead RL can be partially disconnected to form a break FR. Both ends of the break FR can be connected to the adjacent wire body of the wire body where the break FR is located through the contact hole Ho, that is, the wire bodies at both ends of the break FR are connected in parallel with the adjacent wire bodies. In other words, the number of breaks FR can be one or more, and the wire body interrupted by the break FR can include a plurality of line segments divided by the break FR. Each line segment can be connected to the adjacent wire body through the contact hole Ho, so that the wire body interrupted by the break FR is connected in parallel with the adjacent wire body, so that the signal will pass through cross-sections of different sizes during transmission in the lead L. The portion of the first lead RL corresponding to the line segment is the main portion RLm; the portion of the first lead RL between the two contact holes Ho connecting the two ends of the same break FR is the narrowed portion RLs.

[0117] In one embodiment, as shown in Figures 6-9 , a lead L has two conductors, including a first conductor L1 and a second conductor L2. The first conductor L1 may be located in the first conductive layer TMA described in the above embodiments, while the second conductor L2 may be located in the second conductive layer TMB. The contact hole Ho for connecting the conductors in parallel may penetrate the insulating isolation layer TLD. A fracture FR may be located in the second conductor L2. As shown in Figures 8 and 9 , due to the presence of the fracture FR, the cross-sectional area of ​​the narrowed portion RLs is equal to the cross-sectional area of ​​the first conductor L1; the cross-sectional area of ​​the main portion RLm is equal to the sum of the cross-sectional areas of the first conductor L1 and the second conductor L2.

[0118] At the intersection of the first target lead RLt and the second target lead TLt, the first conductor L1 of the first target lead RLt is disconnected, while the second conductor L2 is continuous. The first conductor L1 of the second target lead TLt is disconnected, while the second conductor L2 is continuous. The second conductor L2 of the second target lead TLt overlaps the first conductor L1 of the first target lead RLt and is separated by an insulating isolation layer TLD, achieving both intersection and insulation between the two. For example, the intersection section RLt2 of the first target lead RLt is a single-layer conductive structure comprising only the second conductor L2. The second conductor L2 of the second target lead TLt is partially disconnected, thereby forming a single-layer conductive structure consisting solely of the first conductor L1. These two single-layer conductive structures intersect, achieving both intersection and insulation between the first target lead RLt and the second target lead TLt.

[0119] Furthermore, as shown in FIG5 , the isolation line can also have a multi-layer structure. Similar to the lead L, the isolation line also includes multiple line bodies. For example, the isolation line includes two line bodies, one located in the first conductive layer TMA and the other located in the second conductive layer TMB, separated by an insulating isolation layer TLD. The second isolation line GAL2 also intersects the second target lead TLt. Similar to the above-described intersection of the first target lead RLt and the second target lead TLt, the line body of the second isolation line GAL2 located in the second conductive layer TMB is disconnected, while the line body of the second isolation line GAL2 located in the first conductive layer TMA is continuous, and the first line body L1 of the second target lead TLt is crossed.

[0120] As shown in FIG5 , the dummy lead DL may be a single-layer or multi-layer structure, and may have the same structure as the lead L and the isolation line. However, since it does not need to cross other leads L, the dummy lead DL may be a continuous structure.

[0121] In some other embodiments of the present disclosure, the first lead RL may be a single-layer structure, with at least a portion of the first lead RL locally thinned to form a narrowed portion RLs, and the other area being the main portion RLm, which may also increase resistance without increasing length.

[0122] In one embodiment of the present disclosure, as shown in Figures 10 and 11, the touch structure may further include a dummy line body LD, which may be located within the fracture FR. The dummy line body LD is disposed on the same layer as the line body in which the fracture FR is located and is floating. That is, the length of the dummy line body LD in the extension direction of the first lead RL is less than the length of the first lead RL in the extension direction of the fracture FR, and does not contact the ends of the fracture FR. While maintaining the fracture FR, the dummy line body LD can improve the uniformity of the film layer. The dummy line body LD has the same width as the line body in which the fracture FR is located.

[0123] In one embodiment of the present disclosure, as shown in Figures 12 and 13, the distance between the contact hole Ho and the nearest fracture FR is greater than the length of the fracture FR, wherein the distance between the contact hole Ho and the fracture FR can be defined as the distance between the two points closest to the contact hole Ho and the fracture FR in the direction of linear extension. The length of the fracture FR can be the length of the fracture FR in the direction of linear extension. In this embodiment, the contact holes Ho at both ends of the fracture FR are at a certain distance from the fracture FR, which can ensure that the fracture FR cuts off the linear body while extending the linear body as much as possible, thereby improving the uniformity of the film layer without setting a dummy linear body LD. Of course, a dummy linear body LD can also be set in the fracture FR.

[0124] In another embodiment of the present disclosure, as shown in FIG. 6 , FIG. 10 and FIG. 15 , the distance between the contact hole Ho and the nearest fracture FR may also be less than or equal to the length of the fracture FR.

[0125] In some embodiments of the present disclosure, because different first leads RL have different lengths and, accordingly, different resistances within at least a portion of the first leads RL, the required increase in resistance by different amounts is different. Therefore, as shown in FIG14 , for two first leads RL of different lengths, the length of the narrowed portion RLs of the longer first lead RL can be made smaller than that of the shorter first lead RL, so that the resistances of the two first leads RL are consistent.

[0126] In some embodiments of the present disclosure, as shown in FIG. 6 to FIG. 13 , each narrowed portion RLs is located in the edge area EA, and the distance between each narrowed portion RLs and the lead-out area FA in the second direction Y is equal.

[0127] In other embodiments of the present disclosure, as shown in FIG15 , each narrowing portion RLs is located in the edge area EA; the distance between each narrowing portion RLs and the lead-out area FA in the second direction Y increases as it moves away from the touch area TA. That is, the farther the narrowing portion RLs is from the touch area TA, the farther it is from the lead-out area FA. Of course, in other embodiments, the distance between each narrowing portion RLs and the lead-out area FA in the second direction Y decreases as it moves away from the touch area TA.

[0128] In order to make the resistance of each first lead RL consistent, it is possible to increase the resistance by not only providing a narrowing portion RLs but also by extending the length of the first lead RL through winding. In some embodiments of the present disclosure, both methods can be used simultaneously. The winding method is simple to process, while providing a narrowing portion RLs saves space. For example, as shown in Figures 6-15, each first lead RL can be divided into a first type of lead RL1, a second type of lead RL2, and a third type of lead RL3. The first type of lead RL1, the second type of lead RL2, and the third type of lead RL3 can be distributed in sequence away from the touch area TA, where:

[0129] As shown in Figures 3 and 4 , a portion of the first-type lead RL1 extends along the first direction X between the touch area TA and the lead-out area FA, extending at least to between the first binding area BA1 and the second binding area BA2, and then connecting to the first binding area BA1. This extension along the first direction X allows for winding, thereby increasing the length of the first-type lead RL1. The first-type lead RL1 can be provided without a narrowing portion RLs, with resistance increased solely through winding. The first-type lead RL1 may include multiple first leads RL. For example, the number of first leads RL in the first-type lead RL1 is 10, each of which is connected to the first leads RL of the 1st to 10th first touch electrodes Rx in a direction away from the lead-out area FA.

[0130] In one embodiment, as shown in Figures 4 and 5, a portion of the second lead TL1 closest to the second target lead TLt (the second lead TL1 connecting the second second touch electrode Tx counted from the third side SL3 toward the fourth side SL4) can be extended between the dummy lead DL and the second target lead TLt to increase the length.

[0131] The second-type lead RL2 is located on the side of the first-type lead RL1 away from the touch area TA, that is, on the outside of the first-type lead RL1. The narrowing portion RLs is provided on the second-type lead RL2. The second-type lead RL2 may include multiple first leads RL, and the specific number is not specifically limited here. Each first lead RL of the second-type lead RL2 may be provided with at least one narrowing portion RLs.

[0132] The third-type lead RL3 is located on the side of the second-type lead RL2 away from the touch area TA, that is, outside the second-type lead RL2. The length of the third-type lead RL3 is greater than that of the second-type lead RL2 and greater than or equal to that of the first-type lead RL1. Since the first-type lead RL1 can increase its resistance through winding, the second-type lead RL2 can increase its resistance through the narrowing portion RLs without increasing its length. Therefore, the length of the first-type lead RL1 can be greater than that of the second-type lead RL2. There can be only one third-type lead RL3: the outermost first lead RL among all the first leads RL, which has the longest length and the highest resistance. The resistance of this first lead RL can be used as the reference value. The narrowing portion RLs can be used to bring the resistance of the second-type lead RL2 into line with the reference value, and the winding can be used to bring the resistance of the first-type lead RL1 into line with the reference value.

[0133] In some embodiments of the present disclosure, the first-type lead RL1 can employ the aforementioned winding method in addition to the narrowed portion RLs structure. Specifically, the first-type lead RL1 can include a portion extending along the first direction X, a fracture FR, and a contact hole Ho, further improving resistance. The second-type lead RL2 can be provided with only the narrowed portion RLs. Alternatively, winding can be employed where space permits.

[0134] It should be noted that due to errors that may exist during the manufacturing and testing process, there is still a certain deviation in the resistance of the first lead RL after setting the narrowing portion RLs or winding. However, the resistance can still be regarded as equal as long as the deviation is within a specified threshold. For example, the difference between any first-type lead RL1 or second-type lead RL2 and the above-mentioned standard value is less than 5% of the standard value.

[0135] As shown in FIG16 , an embodiment of the present disclosure provides a touch display panel, which may include a display substrate and a touch structure of any of the above embodiments. The touch structure may be provided on one side of the display substrate. Based on the touch structure having a touch area and a peripheral area, the touch display panel also has a touch area and a peripheral area. Specifically, the touch area of ​​the touch display panel is the area corresponding to the touch area of ​​the touch structure, and the peripheral area of ​​the touch display panel is the area corresponding to the peripheral area of ​​the touch structure. Correspondingly, the peripheral area of ​​the touch display substrate also has an edge area and a lead-out area, and the lead-out area also has a binding portion, which corresponds to the binding portion of the touch structure. Therefore, the top view of the touch display panel can refer to FIG1-FIG4 . The driving circuit of the display substrate can be connected to the binding portion of the touch display substrate, and the leads of the touch structure are also connected to the binding portion. The binding portion of the touch display panel can be connected to a flexible circuit board, and the flexible circuit board can be connected to a driving circuit board, so that the touch display panel can be controlled to emit light through the driving circuit board. Furthermore, in some embodiments, the lead-out region of the touch display panel further includes a bending region SA. The bending region SA allows the lead-out region to bend toward the side of the display substrate away from the touch structure, thereby connecting to the flexible printed circuit board on the back side of the display substrate. Of course, in some embodiments, the bending region SA may not be provided, and the flexible printed circuit board may be bent toward the back side of the display substrate.

[0136] The display substrate can be an electro-organic light-emitting display substrate, a liquid crystal display substrate, etc., and its structure is not particularly limited here. Taking the electro-organic light-emitting display substrate as an example, it may include a driving backplane BP, a plurality of light-emitting devices LU and an encapsulation layer TFE, wherein:

[0137] The light emitting devices LU may be distributed in an array on one side of the driving backplane BP, and the encapsulation layer TFE covers the light emitting devices LU.

[0138] The driving backplane BP has a driving circuit that can be used to drive each light-emitting device LU to emit light independently to display an image. The driving circuit may include a pixel circuit and a peripheral circuit. At least part of the pixel circuit is located in the pixel area. Of course, part of the pixel circuit may be located in the peripheral area WA. The pixel circuit can be a 7T1C, 7T2C, 6T1C, or 6T2C structure, as long as it can drive the light-emitting device LU to emit light. There is no special limitation on its structure here. The number of pixel circuits is the same as the number of light-emitting devices LU, and they are connected to each light-emitting device LU in a one-to-one correspondence to control each light-emitting device LU to emit light independently. Here, nTmC means that a pixel circuit includes n transistors (represented by the letter "T") and m capacitors (represented by the letter "C").

[0139] The peripheral circuit is located within the peripheral area WA and is connected to the pixel circuit for inputting drive signals to the pixel circuit to control the light-emitting device LU to emit light. The peripheral circuit may include a gate drive circuit, a source drive circuit, and a light-emitting control circuit. Of course, other circuits may also be included, and the specific structure of the peripheral circuit is not particularly limited herein.

[0140] To separate the light-emitting devices LU and prevent crosstalk, the touch display panel may further include a pixel definition layer (PDL) that defines each light-emitting device LU. The pixel definition layer (PDL) may be disposed on one side of the driver backplane (BP) and may have multiple openings, each of which defines the area of ​​a light-emitting device LU. The shape of the openings, i.e., the outline of the orthographic projection of the openings on the driver backplane (BP), may be a polygon, a smooth closed curve, or other shape. The smooth closed curve may be a circle, an ellipse, or a rounded shape, etc., and is not specifically limited here.

[0141] The light emitting device LU may be located in the touch area TA. Taking an organic light emitting diode as an example, the light emitting device LU may include a first electrode ANO, a light emitting functional layer EL, and a second electrode CAT stacked in sequence in a direction away from the driving backplane BP, wherein:

[0142] The first electrode ANO can be provided on the same surface of the driver backplane BP as the pixel definition layer PDL and can serve as the anode of the light-emitting device LU. Each opening in the pixel definition layer PDL exposes a first electrode ANO in a one-to-one correspondence. The first electrode ANO can be a single-layer or multi-layer structure, and its material can include one or more of a conductive metal, a metal oxide, and an alloy.

[0143] The light-emitting functional layer EL is at least partially arranged in the opening, and may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer and an electron injection layer stacked in sequence along the direction away from the driving backplane BP. The holes and electrons can be combined into excitons in the light-emitting material layer, and the excitons radiate photons to generate visible light. The specific light-emitting principle will not be described in detail here.

[0144] The second electrode CAT may cover the light emitting functional layer EL and may serve as the cathode of the light emitting device LU. The second electrode CAT may be a single layer or multilayer structure, and its material may include one or more of conductive metals, metal oxides and alloys.

[0145] Furthermore, each light-emitting device LU can share the same second electrode CAT. Specifically, the second electrode CAT is a continuous conductive layer covering the light-emitting functional layer EL and the pixel definition layer PDL of each light-emitting device LU. That is, the orthographic projection of the second electrode CAT on the pixel definition layer PDL covers each opening.

[0146] The encapsulation layer TFE can cover the light-emitting device LU and can be used to prevent external water and oxygen from corroding the light-emitting device LU. For example, the encapsulation layer TFE can be encapsulated using a thin film encapsulation method and can include a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer covers the light-emitting device LU. For example, the first inorganic layer can cover the second electrode CAT. The organic layer can be provided on the surface of the first inorganic layer facing away from the driving backplane BP, and the boundary of the organic layer is defined inwardly of the boundary of the first inorganic layer. The boundary of the orthographic projection of the organic layer on the driving backplane BP can be located in the peripheral area WA to ensure that the organic layer can cover each light-emitting device LU. The second inorganic layer can cover the organic layer and the first inorganic layer not covered by the organic layer. The second inorganic layer can block the intrusion of water and oxygen, and the flexible organic layer can achieve planarization.

[0147] The touch structure can be provided on the side of the encapsulation layer TFE away from the driving back plate BP. For example, the buffer layer TBU can be provided on the surface of the encapsulation layer TFE away from the driving back plate BP. The specific structure of the touch structure can be referred to the above embodiment of the touch structure and will not be repeated here.

[0148] The present disclosure further provides a touch display panel, which may include a driving backplane, a light-emitting device, an encapsulation layer, and a touch structure, wherein:

[0149] The driving backplane, light-emitting device and packaging layer are formed in sequence on one side of the driving backplane. The specific structures of the driving backplane, light-emitting device and packaging layer can refer to the driving backplane, light-emitting device and packaging layer in the above embodiment and will not be described in detail here.

[0150] The touch structure can be divided into at least a touch area and a peripheral area. The peripheral area is located outside the touch area. The peripheral area may include an edge area surrounding the touch area and a lead-out area extending outward from a portion of the edge area. The lead-out area has a binding portion.

[0151] The touch structure may include touch electrodes located in the touch area and leads located in the peripheral area. Each touch electrode is connected to a binding portion via at least one lead for signal transmission. The touch electrodes may include a plurality of first touch electrodes and second touch electrodes. The first touch electrodes extend along a first direction and are spaced apart along a second direction; the second touch electrodes extend along the second direction and are spaced apart along the first direction; the first and second directions intersect; and the first touch electrodes are insulated from the second touch electrodes.

[0152] Each lead includes a plurality of first leads and a second lead. The first touch electrodes are connected to the binding portion through the first leads, and the second touch electrodes are connected to the binding portion through the second leads.

[0153] At least one lead includes a first wire body and a second wire body; the orthographic projections of the first wire body and the second wire body of the same lead on the driving backplane overlap and are connected in parallel, that is, the first wire body and the second wire body can be distributed in a direction away from or close to the driving backplane, and the orthographic projections of the two on the driving backplane at least partially overlap; at the same time, the first wire body and the second wire body are connected at least at two positions to achieve parallel connection.

[0154] The first wire body may include at least one discontinuity portion, where the discontinuity portion is an opening that separates the first wire body and can divide the first wire body into a plurality of first sub-lead portions.

[0155] The second conductor may include at least one continuous sub-lead portion, the orthographic projection of which on the driver backplane is a continuous structure. That is, the continuous sub-lead portion has no discontinuities and extends continuously without interruption. Furthermore, the discontinuities in the first conductor overlap with the orthographic projection of the continuous sub-lead portion on the driver backplane.

[0156] The lead formed by the first wire body and the second wire body can realize the connection between the touch electrode and the binding part. At the same time, since the first wire body has a discontinuous portion and the first wire body is connected in parallel with the second wire body, the cross-section of the lead can be reduced at the discontinuous portion, thereby increasing the resistance. When the lead is short, the resistance can also be increased, which is beneficial to improve the uniformity of the resistance of leads of different lengths by setting the discontinuous portion.

[0157] In some embodiments of the present disclosure, the plurality of leads may include a first type of lead and a second type of lead distributed in the peripheral area in a direction away from the touch area; the length of the first type of lead is greater than or equal to the length of the second type of lead; the distribution manner of the first type of lead and the second type of lead can refer to the first type of lead and the second type of lead above, and will not be described in detail here.

[0158] The second type of leads may include the first and second wires described above. The first type of leads may include a third and fourth wires connected in parallel. The third and fourth wires may be arranged in layers in a direction away from or close to the driver backplane, and the orthographic projections of the third and fourth wires on the driver backplane are continuous and overlap, so that the second type of leads have at least a double-layer structure, which is beneficial for reducing resistance and signal attenuation.

[0159] In some embodiments of the present disclosure, in addition to the first and second types of leads, the plurality of leads further include a third type of lead, which is disposed on a side of the second type of lead away from the touch area. The length of the third type of lead is greater than or equal to the length of the second type of lead. The third type of lead may include a fifth and sixth wire bodies connected in parallel, which may be layered in a direction away from or close to the driver backplane. The orthographic projections of the fifth and sixth wire bodies on the driver backplane are continuous, and the orthographic projections overlap, such that the third type of lead has at least a double-layer structure, which is beneficial for reducing resistance and signal attenuation.

[0160] The present disclosure also provides a display device that may include the touch display panel of any of the above-described embodiments. The specific structure and beneficial effects of the touch display panel can be referenced above in the touch structure and touch display panel embodiments, and will not be described in detail here. The display device of the present disclosure can be an electronic device with a touch display function, such as a mobile phone or tablet computer, and will not be listed here one by one.

[0161] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A touch structure, wherein: A touch area and a peripheral area outside the touch area, wherein the peripheral area includes an edge area surrounding the touch area and a lead-out area extending outward from a part of the edge area, and the lead-out area has a binding portion; The touch structure comprises a touch electrode located in the touch area and a lead located in the peripheral area, the touch electrode is connected to the binding part through the lead; the touch electrode comprises a plurality of first touch electrodes and a second touch electrode, the first touch electrodes extend along a first direction and are spaced apart along a second direction; the second touch electrodes extend along the second direction and are spaced apart along the first direction; the first direction intersects with the second direction; the first touch electrode is insulated from the second touch electrode; the lead comprises a plurality of first leads and a second lead, the first touch electrode is connected to the binding part through the first lead, and the second touch electrode is connected to the binding part through the second lead; At least a portion of the first lead includes a main body portion and a narrowed portion connected along an extension path thereof, and a cross-section of at least a portion of the narrowed portion is smaller than a cross-section of the main body portion.

2. The touch control structure according to claim 1, wherein: The lead wire comprises multiple layers of wire bodies arranged at intervals, and the wire bodies of the same lead wire overlap; at least a portion of the wire bodies of the first lead wire have a break; The wire body cut off by the break includes a plurality of line segments divided by the break, and each of the line segments is connected to an adjacent wire body through a contact hole, so that the wire body cut off by the break is connected in parallel with the adjacent wire body; The portion of the first lead corresponding to the line segment is the main body; the portion of the first lead between the two contact holes connecting the two ends of the same break is the narrowing portion.

3. The touch control structure according to claim 2, wherein: The touch control structure further includes a dummy line body, the dummy line body is located in the break, and the dummy line body is arranged in the same layer as the line body where the break is located and is floatingly connected.

4. The touch control structure according to claim 2, wherein: The distance between the contact hole and the fracture closest thereto is greater than the length of the fracture.

5. The touch control structure according to claim 2, wherein: The distance between the contact hole and the fracture closest thereto is less than or equal to the length of the fracture.

6. The touch control structure according to claim 1, wherein: At least two first leads of different lengths have the narrowed portion; among the two first leads of different lengths, the narrowed portion of the first lead with a larger length is shorter than the narrowed portion of the first lead with a smaller length.

7. The touch control structure according to claim 1, wherein: The narrowed portions are all located in the edge region, and the distances between each narrowed portion and the lead-out region in the second direction are equal.

8. The touch control structure according to claim 1, wherein: The narrowed portions are all located in the edge area; the distance between each narrowed portion and the lead-out area in the second direction increases or decreases along a direction away from the touch area.

9. The touch control structure according to claim 1, wherein: The lead-out area and the touch area are distributed along the second direction; each of the first lead lines is connected to the first touch electrode from the same side of the touch area and is distributed at intervals in a direction away from the touch area; Each of the first leads can be divided into a first type of lead, a second type of lead and a third type of lead distributed in a direction away from the touch area; a partial area of ​​the first type of lead extends along the first direction between the touch area and the lead-out area; the narrowing portion is provided on the second type of lead; the length of the third type of lead is greater than the length of the second type of lead, and greater than or equal to the length of the first type of lead.

10. The touch control structure according to claim 1, wherein: The lead-out area and the touch area are distributed along the second direction; each of the first lead lines is connected to the first touch electrode from the same side of the touch area and is distributed at intervals in a direction away from the touch area; Each of the first leads can be divided into a first type of lead, a second type of lead and a third type of lead distributed in a direction away from the touch area; a partial area of ​​the first type of lead extends along the first direction between the touch area and the lead-out area; the narrowing portion is provided in the first type and the second type of lead; the length of the third type of lead is greater than the length of the second type of lead, and is greater than or equal to the length of the first type of lead.

11. The touch control structure according to claim 2, wherein: The lead-out area and the touch area are distributed along the second direction; each of the first lead wires is connected to the first touch electrode from the same side of the touch area and is distributed at intervals in a direction away from the touch area; the second lead wire is located between the touch area and the binding portion; At least one of the first lead lines crosses and is insulated from at least one of the second lead lines.

12. The touch control structure according to claim 11, wherein: The contour of the touch area includes four sides and a rounded corner connecting two adjacent sides; the sides include a first side and a second side extending along the first direction and a third side and a fourth side extending along the second direction; the first side and the second side are distributed in a direction away from the lead-out area, and the third side and the fourth side are distributed along the first direction; the rounded corner connecting the first side and the third side is a first rounded corner; In a direction away from the lead-out area, the first of the first touch electrodes is a first target electrode, an edge of the first target electrode close to the lead-out area is located at the first side, and an edge of one end of the first target electrode away from the fourth side is located at the first fillet; a first lead connecting the first target electrode is a first target lead; In a direction extending away from the third side toward the fourth side, the first of the second touch electrodes is a second target electrode, an edge of the second target electrode away from the fourth side is located at the third side, and an edge of the second target electrode close to one end of the lead-out region is located at the first fillet; a second lead connecting the second target electrode is a second target lead; The first target lead is crossed with and insulated from the second target lead.

13. The touch control structure according to claim 12, wherein: At least one isolation line is disposed between at least a partial region of the first target lead and at least a partial region of the second target lead.

14. The touch control structure according to claim 13, wherein: A dummy lead is provided between at least one of the isolation lines and a partial region of the second target lead.

15. The touch control structure according to claim 2, wherein: The wire body of the lead wire includes a first wire body and a second wire body; The first touch control electrode includes a plurality of first electrode blocks connected in series along the first direction; the second touch control electrode includes a plurality of first electrode blocks distributed along the second direction and a switching bridge connecting two adjacent second electrode blocks; The transfer bridge and the first touch electrode are arranged crosswise; The switching bridge and the first wire body are arranged in the same layer; the first electrode block, the second electrode and the second wire body are arranged in the same layer.

16. The touch control structure according to claim 15, wherein: The touch control structure comprises: A first conductive layer, including the first wire body and the transfer bridge; an insulating isolation layer, covering the first conductive layer; The second conductive layer is disposed on a surface of the insulating layer isolation layer away from the first conductive layer, and includes the first electrode block, the second electrode and the second wire body.

17. The touch control structure according to claim 11, wherein: The leads also include a plurality of third leads, the second touch electrode is also connected to the binding portion through the third leads, and one end of a third lead is connected to one end of the second touch electrode away from the lead-out area, and the other end is connected to the binding portion.

18. A touch display panel, wherein: include: Display substrate: The touch structure described in any one of claims 1 to 17 is arranged on one side of the display substrate.

19. A touch display panel, wherein: include: Driver backplane; A plurality of light emitting devices are arranged on one side of the driving backplane; An encapsulation layer, covering each of the light-emitting devices; A touch structure is provided on a surface of the packaging layer away from the driving backplane; the touch structure comprises a touch area and a peripheral area outside the touch area, the peripheral area comprises an edge area surrounding the touch area and a lead-out area extending outward from a part of the edge area, the lead-out area has a binding portion; the touch structure comprises a plurality of leads located in the peripheral area; At least one of the leads includes a first wire body and a second wire body; the orthographic projections of the first wire body and the second wire body on the driving backplane overlap and are connected in parallel; The first wire body includes at least one discontinuous portion, and the discontinuous portion divides the first wire body into a plurality of first sub-lead portions; The second line body includes at least one continuous sub-lead portion, and the orthographic projection of the continuous sub-lead layer on the driving backplane is a continuous structure; the discontinuity portion overlaps with the orthographic projection of the continuous sub-lead portion on the driving backplane.

20. The touch display panel according to claim 19, wherein: The plurality of leads include first-type leads and second-type leads distributed in the peripheral area in a direction away from the touch area; the length of the first-type leads is greater than or equal to the length of the second-type leads; The second type of lead wire includes the first wire body and the second wire body; The first type of leads include a third line body and a fourth line body connected in parallel, and the orthographic projections of the third line body and the fourth line body on the driving backplane are continuous structures, and the orthographic projections overlap.

21. The touch display panel according to claim 20, wherein: The multiple leads also include a third type of lead, which is arranged on a side of the second type of lead away from the touch area; the length of the third type of lead is greater than or equal to the length of the second type of lead; the third type of lead includes a fifth wire body and a sixth wire body connected in parallel, and the orthographic projections of the fifth wire body and the sixth wire body on the driving backplane are a continuous structure, and the orthographic projections overlap.

22. A display device, wherein: A touch display panel comprising any one of claims 18-21.