Touch substrate, touch display panel, and touch display device

Abstract

An embodiment of the present disclosure provides a touch substrate, a touch display panel, and a touch display device, the touch display panel comprising: a substrate; a touch electrode layer provided on the substrate and located in a touch display area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; and a plurality of touch lead wires provided on the substrate, each touch lead wire electrically connected to a corresponding one of the touch electrodes, wherein a portion of the touch lead wires extends from the touch display area through a first bending region to a first binding region and a portion of the touch lead wires is bent at the first bending region to a rear surface of the touch display panel; another portion of the touch lead wires extends from the touch display area through a second bending region to a second binding region and a portion of the touch lead wires is bent at the second bending region to the rear surface of the touch display panel.

Description

[Technical Field]

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

[0002] With the development of electronic products, AMOLED (Active Matrix Organic Light Emitting Diode) display devices are widely used due to their ability to achieve full screen, narrow bezel, high resolution, curlable wearable, and foldable features. In particular, Flexible Multi-Layer On Cell (FMLOC), a technology that directly fabricates a touch control structure on the encapsulation layer of an OLED (Organic Light Emitting Diode) display panel, enables the production of lighter and thinner display devices, and this technology can be applied to foldable and curlable OLED display devices. Summary of the Invention

[0003] The embodiments of the present disclosure provide a touch substrate, a touch display panel, and a touch display device, and specific examples are as follows:

[0004] An embodiment of the present disclosure provides a touch display panel comprising a touch display area and a peripheral area surrounding the touch display area, the peripheral area including a first binding area located on the opposite side of the touch display area, a second binding area, a first bending area located between the first binding area and the touch display area, and a second bending area located between the second binding area and the touch display area, A substrate; a touch electrode layer provided on the substrate and located in the touch display area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; The touch display panel further includes a plurality of touch lead wires provided on the substrate, each of the touch lead wires electrically connected to a corresponding one of the touch electrodes, wherein a portion of the touch lead wires extends from the touch display area through the first bending area to the first binding area and is bent to the back surface of the touch display panel at the first bending area, and another portion of the touch lead wires extends from the touch display area through the second bending area to the second binding area and is bent to the back surface of the touch display panel at the second bending area.

[0005] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the plurality of touch electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes crossing each other vertically and horizontally; the plurality of touch lead wires comprises a first lead wire and a second lead wire; the first binding area and the second binding area are respectively located at both ends of the extension direction of the second touch electrode; each of the first lead wires is electrically connected to a first end of a corresponding one of the first touch electrodes, a portion of the first lead wire extends from the touch display area through the first bending area to the first binding area, and another portion of the first lead wire extends from the touch display area through the second bending area to the second binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch display area through the adjacent first bending area to the first binding area.

[0006] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the plurality of touch wire leads further include a third wire lead and a fourth wire lead, each of the third wire leads electrically connected to a second end of a corresponding one of the first touch electrodes, a portion of the third wire lead extending from the touch display area through the first bending area to the first binding area, and another portion of the third wire lead extending from the touch display area through the second bending area to the second binding area; Each of the fourth lead wires is electrically connected to the second end of a corresponding one of the second touch electrodes, and the fourth lead wires extend from the touch display area through the adjacent second bending area to the second binding area.

[0007] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first binding area comprises a first sub-binding area and a second sub-binding area that are independently provided, the first sub-binding area is close to a first end of the first touch electrode, and the second sub-binding area is close to a second end of the first touch electrode; a portion of the first lead wire extends from the touch display area through the first bending area to a side of the first sub-binding area close to a first end of the first touch electrode, and a portion of the third lead wire extends from the touch display area through the first bending area to a side of the second sub-binding area close to a second end of the first touch electrode; A portion of the second lead wire extends from the touch display area through the first bending region to a side of the first sub-binding region that is remote from the first end of the first touch electrode, and another portion of the second lead wire extends from the touch display area through the first bending region to a side of the second sub-binding region that is remote from the second end of the first touch electrode.

[0008] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the second binding area comprises a third sub-binding area and a fourth sub-binding area that are independently provided, the third sub-binding area is close to a first end of the first touch electrode, and the fourth sub-binding area is close to a second end of the first touch electrode; another portion of the first lead wire extends from the touch display area through the second bending area to a side of the third sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the fourth sub-binding area close to a second end of the first touch electrode; A portion of the fourth lead wire extends from the touch display area through the second bending region to a side of the third sub-binding region that is remote from the first end of the first touch electrode, and another portion of the fourth lead wire extends from the touch display area through the second bending region to a side of the fourth sub-binding region that is remote from the second end of the first touch electrode.

[0009] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the second binding area includes a fifth sub-binding area, a sixth sub-binding area, a seventh sub-binding area and an eighth sub-binding area which are arranged in order in an extension direction of the first touch electrode and are independently provided; another portion of the first lead wire extends from the touch display area through the second bending area to a side of the fifth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the eighth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a first group of fourth lead wires, a second group of fourth lead wires, a third group of fourth lead wires, and a fourth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the first group extend from the touch display area through the second bending area to a side of the fifth sub-binding area away from the first end of the first touch electrode, and the fourth lead wires of the second group extend from the touch display area to the second bending area. The fourth lead wire of the third group extends from the touch display area through the second bending region to the side of the seventh sub-binding area close to the second end of the first touch electrode, and the fourth lead wire of the fourth group extends from the touch display area through the second bending region to the side of the eighth sub-binding area away from the second end of the first touch electrode.

[0010] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first binding area is located in a central area of ​​a peripheral area on a first end side of the second touch electrode, and the first binding area is divided into a first area, a second area, a third area and a fourth area arranged in order in an extending direction of the first touch electrode, and the first area is close to a first end of the first touch electrode; a portion of the first lead wire extends from the touch display area through the first bending area to the first area, and a portion of the third lead wire extends from the touch display area through the first bending area to the fourth area; A portion of the second lead wire extends from the touch display area through the first bending area to the second area, and another portion of the second lead wire extends from the touch display area through the first bending area to the third area.

[0011] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the second binding area includes a ninth sub-binding area, a tenth sub-binding area, an eleventh sub-binding area and a twelfth sub-binding area which are arranged in order in an extension direction of the first touch electrode and are independently provided; another portion of the first lead wire extends from the touch display area through the second bending area to a side of the ninth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the twelfth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a fifth group of fourth lead wires, a sixth group of fourth lead wires, a seventh group of fourth lead wires, and an eighth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the fifth group extend from the touch display area through the second bending area to a side of the ninth sub-binding area away from the first end of the first touch electrode, and the fourth lead wires of the sixth group extend from the touch display area to the second bending area. The fourth lead wire of the seventh group extends from the touch display area through the second bending region to the side of the eleventh sub-binding area close to the second end of the first touch electrode, and the fourth lead wire of the eighth group extends from the touch display area through the second bending region to the side of the twelfth sub-binding area away from the second end of the first touch electrode.

[0012] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the second binding area is located in a central area of ​​a peripheral area on a second end side of the second touch electrode, and the second binding area is divided into a fifth area, a sixth area, a seventh area and an eighth area arranged in order in an extending direction of the first touch electrode, and the fifth area is close to a first end of the first touch electrode; another portion of the first lead wire extends from the touch display area through the second bending area to the fifth area, and another portion of the third lead wire extends from the touch display area through the second bending area to the eighth area; A portion of the fourth lead wire extends from the touch display area through the second bending area to the sixth area, and another portion of the fourth lead wire extends from the touch display area through the second bending area to the seventh area.

[0013] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, a gap between a first lead wire electrically connected to the first touch electrode, which is closest to a first end of the second touch electrode, and a second lead wire electrically connected to the second touch electrode, which is closest to the first end of the first touch electrode, is a first gap, and the width of the first gap is 70 μm or more; a gap between a third lead wire electrically connected to the first touch electrode and closest to a first end of the second touch electrode, and a second lead wire electrically connected to the second touch electrode and closest to a second end of the first touch electrode, the second gap having a width of 70 μm or more; a gap between a first lead wire electrically connected to the first touch electrode and closest to a second end of the second touch electrode and a fourth lead wire electrically connected to the second touch electrode and closest to a first end of the first touch electrode, the third gap having a width of 70 μm or more; The gap between the third lead wire to which the first touch electrode is electrically connected and which is closest to the second end of the second touch electrode, and the fourth lead wire to which the second touch electrode is electrically connected and which is closest to the second end of the first touch electrode, is defined as a fourth gap, and the width of the fourth gap is 70 μm or more.

[0014] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, a first shielding wire connected to ground is provided within the first gap, a second shielding wire connected to ground is provided within the second gap, a third shielding wire connected to ground is provided within the third gap, and a fourth shielding wire connected to ground is provided within the fourth gap.

[0015] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, a portion of the first lead wire crosses over to the first binding region in the first bending region, and another portion of the first lead wire crosses over to the second binding region in the second bending region; a portion of the third lead wire extends across the first binding region in the first bending region, and another portion of the third lead wire extends across the second binding region in the second bending region; The second lead wire spans the first binding region at the first bend region, and the fourth lead wire spans the second binding region at the second bend region.

[0016] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first bending region includes a plurality of first jumper wires arranged in order in an extension direction of the first touch electrode, and the second bending region includes a plurality of second jumper wires arranged in order in an extension direction of the first touch electrode; The number of second jumper wires extending to the second binding region and electrically connected to one touch lead wire is less than the number of first jumper wires extending to the first binding region and electrically connected to one touch lead wire.

[0017] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, one of the first lead wires among the part of the first lead wires is electrically connected to at least three corresponding first jumper wires, one of the third lead wires among the part of the third lead wires is electrically connected to at least three corresponding first jumper wires, and one of the second lead wires is electrically connected to at least three corresponding first jumper wires; One of the other portions of the first lead wires is electrically connected to at least two corresponding second jumper wires, one of the other portions of the third lead wires is electrically connected to at least two corresponding second jumper wires, and one of the fourth lead wires is electrically connected to at least two corresponding second jumper wires.

[0018] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first touch electrode has an integral structure, the second touch electrode includes a plurality of sub-touch electrodes and a plurality of connecting portions spaced apart by a plurality of the first touch electrodes, the touch display panel further includes a first insulating layer located between the sub-touch electrodes and the connecting portions, the connecting portions are close to the substrate, and each of two adjacent sub-touch electrodes is electrically connected to the connecting portions by a via hole penetrating the first insulating layer; the touch display panel comprises a first source-drain metal layer, a second insulating layer and a second source-drain metal layer sequentially stacked between the substrate and the connection portion, the first source-drain metal layer being close to the substrate; a portion of the touch lead wire corresponding to a region other than the first bending region and a region other than the second bending region includes a first metallic wire and a second metallic wire that are electrically connected to each other, the first metallic wire being provided in the same layer as the connection portion, and the second metallic wire being provided in the same layer as the first touch electrode; A portion of the touch lead wire corresponding to the first bending region and the second bending region is a third metallic wire located in the second source-drain metal layer, and the first metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a second insulating layer between the second source-drain metal layer and the connection portion, or the second metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a third insulating layer between the second source-drain metal layer and the first touch electrode.

[0019] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes crossing each other vertically and horizontally, and the first binding area and the second binding area are respectively located at both ends of the extension direction of the second touch electrode; the peripheral region further includes a third binding region and a fourth binding region, the third binding region and the fourth binding region being located at both ends of the first touch electrode in an extending direction, and the peripheral region further includes a third bending region located between the third binding region and the touch display region, and a fourth bending region located between the fourth binding region and the touch display region; the plurality of touch lead wires include a first lead wire and a second lead wire, each of the first lead wires electrically connected to a first end of a corresponding one of the first touch electrodes, and the first lead wires extend from the touch display area through the third bending area adjacent thereto to the third binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch display area through the adjacent first bending area to the first binding area.

[0020] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the plurality of touch lead wires further include a third lead wire and a fourth lead wire, each of the third lead wires is electrically connected to a second end of a corresponding one of the first touch electrodes, and the third lead wires extend from the touch display area through the fourth bending area adjacent thereto to the fourth binding area; Each of the fourth lead wires is electrically connected to the second end of a corresponding one of the second touch electrodes, and the fourth lead wires extend from the touch display area through the adjacent second bending area to both ends of the second binding area.

[0021] In one possible embodiment, in the touch display panel provided by an embodiment of the present disclosure, the first lead wire spans to the third binding region in the third bending region, the second lead wire spans to the first binding region in the first bending region, the third lead wire spans to the fourth binding region in the fourth bending region, and the fourth lead wire spans to the second binding region in the second bending region.

[0022] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first bending region comprises a plurality of first jumper wires arranged in order in an extension direction of the first touch electrode, the second bending region comprises a plurality of second jumper wires arranged in order in an extension direction of the first touch electrode, the third bending region comprises a plurality of third jumper wires arranged in order in an extension direction of the second touch electrode, and the fourth bending region comprises a plurality of fourth jumper wires arranged in order in an extension direction of the second touch electrode; One of the first lead wires is electrically connected to at least two corresponding third jumper wires, one of the second lead wires is electrically connected to at least two corresponding first jumper wires, one of the third lead wires is electrically connected to at least two corresponding fourth jumper wires, and one of the fourth lead wires is electrically connected to at least two corresponding second jumper wires.

[0023] In one possible embodiment, in the touch display panel provided by the embodiment of the present disclosure, the first touch electrode has an integral structure, the second touch electrode includes a plurality of sub-touch electrodes and a plurality of connecting portions spaced apart by a plurality of the first touch electrodes, the touch display panel further includes a first insulating layer located between the sub-touch electrodes and the connecting portions, the connecting portions are close to the substrate, and each of two adjacent sub-touch electrodes is electrically connected to the connecting portions by a via hole penetrating the first insulating layer; the touch display panel comprises a first source-drain metal layer, a second insulating layer and a second source-drain metal layer sequentially stacked between the substrate and the connection portion, the first source-drain metal layer being close to the substrate; a portion of the touch lead wire corresponding to a region other than the first bending region, the second bending region, the third bending region, and the fourth bending region includes a first metallic wire and a second metallic wire that are electrically connected to each other, the first metallic wire being provided in the same layer as the connection portion, and the second metallic wire being provided in the same layer as the first touch electrode; The portions of the touch lead wire corresponding to the first bending region, the second bending region, the third bending region, and the fourth bending region are a third metallic wire located in the second source-drain metal layer, and the first metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a second insulating layer between the second source-drain metal layer and the connection portion, or the second metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a third insulating layer between the second source-drain metal layer and the first touch electrode.

[0024] In accordance with this, an embodiment of the present disclosure further provides a touch display device, comprising: the touch display panel provided by the embodiment of the present disclosure; and at least two flexible circuit boards located on a rear surface of the touch display panel, wherein each binding area of ​​the touch display panel has a plurality of first bonding pads, and the touch lead wires are electrically connected to the corresponding flexible circuit boards by the first bonding pads.

[0025] In one possible embodiment, in a touch display device provided by an embodiment of the present disclosure, the first binding area includes a first sub-binding area and a second sub-binding area that are independently provided, and the second binding area includes a fifth sub-binding area, a sixth sub-binding area, a seventh sub-binding area, and an eighth sub-binding area that are independently provided and sequentially arranged in an extension direction of the first touch electrode; the at least two flexible circuit boards include a first flexible circuit board, a second flexible circuit board, a third flexible circuit board, a fourth flexible circuit board, a fifth flexible circuit board and a sixth flexible circuit board; the rear surface of the touch display panel further includes a printed circuit board, the printed circuit board is close to the second binding area and extends in the extension direction of the first touch electrode; a terminal at one end of the first flexible circuit board is bonded to a first bonding pad in the first sub-binding area, a terminal at one end of the second flexible circuit board is bonded to a first bonding pad in the second sub-binding area, and the other end of the first flexible circuit board and the other end of the second flexible circuit board are electrically connected to the printed circuit board at a location close to the eighth sub-binding area; a terminal at one end of the third flexible circuit board is bonded to a first bonding pad in the fifth sub-binding region, a terminal at one end of the fourth flexible circuit board is bonded to a first bonding pad in the sixth sub-binding region, a terminal at one end of the fifth flexible circuit board is bonded to a first bonding pad in the seventh sub-binding region, and a terminal at one end of the sixth flexible circuit board is bonded to a first bonding pad in the eighth sub-binding region; The terminal at the other end of the third flexible circuit board is bonded to the printed circuit board, the terminal at the other end of the fourth flexible circuit board is bonded to the printed circuit board, the terminal at the other end of the fifth flexible circuit board is bonded to the printed circuit board, and the terminal at the other end of the sixth flexible circuit board is bonded to the printed circuit board.

[0026] In one possible embodiment, in a touch display device provided by an embodiment of the present disclosure, the printed circuit board comprises a first source driver chip, a second source driver chip, a third source driver chip, and a fourth source driver chip, the first source driver chip is located in a central region of the third flexible circuit board on a side remote from the first flexible circuit board, the second source driver chip is located in a central region of the fourth flexible circuit board on a side remote from the first flexible circuit board, the third source driver chip is located in a central region of the fifth flexible circuit board on a side remote from the first flexible circuit board, and the fourth source driver chip is located in a central region of the sixth flexible circuit board on a side remote from the first flexible circuit board; The printed circuit board further includes a touch driver chip located at a corner thereof, the touch driver chip being close to the third flexible circuit board, and the touch driver chip transmitting touch signals to the first flexible circuit board, the second flexible circuit board, the third flexible circuit board, the fourth flexible circuit board, the fifth flexible circuit board and the sixth flexible circuit board through wiring on the printed circuit board.

[0027] In one possible embodiment, the touch display device provided by the embodiments of the present disclosure further comprises an active pen.

[0028] Accordingly, an embodiment of the present disclosure provides a touch substrate comprising a touch area and a non-touch area surrounding the touch area, the non-touch area comprising a first binding area and a second binding area located opposite the touch area, a first bending area located between the first binding area and the touch area, and a second bending area located between the second binding area and the touch area, A substrate; a touch electrode layer provided on the substrate and located in the touch area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; The touch substrate further includes a plurality of touch lead wires provided on the substrate, each of the touch lead wires electrically connected to a corresponding one of the touch electrodes, wherein a portion of the touch lead wires extends from the touch area through the first bending area to the first binding area, and another portion of the touch lead wires extends from the touch area through the second bending area to the second binding area.

[0029] In one possible embodiment, in the touch substrate provided by the embodiment of the present disclosure, the plurality of touch electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes crossing each other vertically and horizontally; the plurality of touch lead wires comprises a first lead wire and a second lead wire; the first binding area and the second binding area are respectively located at both ends of the extension direction of the second touch electrode; each of the first wire leads is electrically connected to a first end of a corresponding one of the first touch electrodes, a portion of the first wire lead extends from the touch area through the first bend area to the first binding area, and another portion of the first wire lead extends from the touch area through the second bend area to the second binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch area through the adjacent first bending area to the first binding area.

[0030] In one possible embodiment, in the touch substrate provided by the embodiment of the present disclosure, the plurality of touch wire leads further include a third wire lead and a fourth wire lead, each of the third wire leads electrically connected to a second end of a corresponding one of the first touch electrodes, a part of the third wire lead extending from the touch area through the first bending area to the first binding area, and another part of the third wire lead extending from the touch area through the second bending area to the second binding area; Each of the fourth lead wires is electrically connected to the second end of a corresponding one of the second touch electrodes, and the fourth lead wires extend from the touch area through the adjacent second bending area to the second binding area.

[0031] In one possible embodiment, in the touch substrate provided by the embodiment of the present disclosure, the first binding region comprises a first sub-binding region and a second sub-binding region that are independently provided, the first sub-binding region is close to a first end of the first touch electrode, and the second sub-binding region is close to a second end of the first touch electrode; a portion of the first lead wire extends from the touch area through the first bending area to a side of the first sub-binding area that is close to a first end of the first touch electrode, and a portion of the third lead wire extends from the touch area through the first bending area to a side of the second sub-binding area that is close to a second end of the first touch electrode; A portion of the second lead wire extends from the touch area through the first bending region to a side of the first sub-binding region that is remote from the first end of the first touch electrode, and another portion of the second lead wire extends from the touch area through the first bending region to a side of the second sub-binding region that is remote from the second end of the first touch electrode.

[0032] In one possible embodiment, in the touch substrate provided by the embodiment of the present disclosure, the second binding area includes a fifth sub-binding area, a sixth sub-binding area, a seventh sub-binding area and an eighth sub-binding area that are arranged in order in an extension direction of the first touch electrode and are independently provided; another portion of the first lead wire extends from the touch area through the second bending area to a side of the fifth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch area through the second bending area to a side of the eighth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a first group of fourth lead wires, a second group of fourth lead wires, a third group of fourth lead wires, and a fourth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the first group extend from the touch area through the second bending area to a side of the fifth sub-binding area away from a first end of the first touch electrode, and the fourth lead wires of the second group extend from the touch area to the second bending area. a fourth lead wire of the third group extends from the touch area through the second bending region to a side of the seventh sub-binding region that is close to the second end of the first touch electrode; and a fourth lead wire of the fourth group extends from the touch area through the second bending region to a side of the eighth sub-binding region that is away from the second end of the first touch electrode. [Brief explanation of the drawings]

[0033] [Figure 1] FIG. 1 is a schematic diagram of a touch-controlled display screen provided by an embodiment of the present disclosure. [Figure 2] FIG. 2 illustrates a touch lead wiring scheme of a touch control configuration provided in the related art. [Figure 3] FIG. 3 is a schematic diagram of a touch display panel provided according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic diagram of another touch display panel provided by an embodiment of the present disclosure. [Figure 5] FIG. 5 is a schematic diagram of another touch display panel configuration provided by an embodiment of the present disclosure. [Figure 6] FIG. 6 is a schematic diagram of another touch display panel configuration provided by an embodiment of the present disclosure. [Figure 7] FIG. 7 is a schematic diagram of another touch display panel provided by an embodiment of the present disclosure. [Figure 8A] FIG. 8A is an enlarged schematic diagram of the area enclosed by the dashed line C1 in FIG. [Figure 8B] FIG. 8B is an enlarged schematic diagram of the area enclosed by the dashed line block C2 in FIG. 8A. [Figure 8C] FIG. 8C is an enlarged schematic diagram of the area enclosed by the dashed line block C3 in FIG. 8B. [Figure 8D] FIG. 8D is an enlarged schematic diagram of the area enclosed by the dashed line block C4 in FIG. 8B. [Figure 8E] FIG. 8E is a schematic cross-sectional view of the inside of a dashed block C4 in FIG. 8B. [Figure 9A] FIG. 9A is an enlarged schematic diagram of the area enclosed by the dashed line block E1 in FIG. [Figure 9B] FIG. 9B is an enlarged schematic diagram of the area enclosed by the dashed line block E2 in FIG. 9A. [Figure 9C] FIG. 9C is an enlarged schematic diagram of the area enclosed by the dashed line block E3 in FIG. 9A. [Figure 9D] FIG. 9D is an enlarged schematic diagram of the area enclosed by the dashed line block E4 in FIG. 9A. [Figure 10] FIG. 10 is a schematic diagram of the rear surface configuration of a touch display device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0034] In order to clarify the objectives, technical solutions, and advantages of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. In addition, the embodiments and features of the embodiments in the present disclosure can be combined with each other in any combination unless they are contradictory. Based on the examples described in the present disclosure, all other examples obtained by those skilled in the art without the need to exert creativity are within the protection scope of the present disclosure.

[0035] Unless otherwise defined, technical or scientific terms used in this disclosure shall have the ordinary meaning understood by a person of ordinary skill in the art to which this disclosure belongs. Terms such as "including" or "comprises" used in this disclosure mean that the element or thing described before the term covers the element or thing described after the term and their equivalents, and do not exclude other elements or things. Similar terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "inside," "outside," "above," and "below" are used only to indicate relative positional relationships, and if the absolute position of the described object is changed, this relative positional relationship may also be changed accordingly.

[0036] It should be noted that the dimensions and shapes of each figure in the drawings are not to scale and are only for the purpose of illustrating the present disclosure. In addition, the same or similar reference numerals throughout refer to the same or similar elements, or elements having the same or similar functions.

[0037] Capacitive touchscreens currently on the market can be touched not only by finger touch, but also by stylus touch, which can be divided into passive pens and active pens. Active pens have a compact tip and combine functions such as pressure sensitivity, hover touch, and buttons, making them more applicable and promising than passive pens. As active pens become more popular, more and more electronic products with touchscreens, such as smartphones, laptops, and tablet PCs, are being equipped with active pens. This increases the requirements for the performance of active pens, including accuracy, signal-to-noise ratio (SNR), and hover height.

[0038] In response to terminal client needs for light, thin, foldable and curved forms, FMLOC touch technology has emerged. As shown in FIG. 1, it comprises a display panel 10, an encapsulation layer 20, a touch control structure 30, a polarizer 40, an optical adhesive 50 and a cover plate 60, which are stacked in order. That is, the touch control structure 30 is directly fabricated on the encapsulation layer 20 of the display panel 10. The touch control structure 30 may adopt a metal mesh architecture, that is, the first touch electrode Tx and the second touch electrode Rx are located on the same film layer and combined with a touch IC to realize the touch function.

[0039] 2 is a schematic plan view of the touch control structure 30 in FIG. 1 , which includes a first touch electrode Tx, a second touch electrode Rx, and a touch lead wire O1, which are insulated and crossed. The touch lead wire O1 is electrically connected to the corresponding first touch electrode Tx and second touch electrode Rx, and extends from the touch area AA to the peripheral area BB. In FMLOC technology, all of the touch lead wires O1 extend to the binding area under the substrate. The touch lead wires O1 electrically connecting different touch electrodes have different lengths. Longer touch lead wires O1 have larger RC loading, resulting in serious active pen signal attenuation and making it difficult to meet mainstream clients' active pen performance needs.

[0040] In view of the above, in order to reduce the attenuation of the active pen signal amount and improve the performance index of the active pen, an embodiment of the present disclosure provides a touch display panel, which, as shown in Figures 3 to 7, includes a touch display area AA and a peripheral area BB surrounding the touch display area AA, and the peripheral area BB includes a first binding area B1 and a second binding area B2 located on opposite sides of the touch display area AA, a first bending area BD1 located between the first binding area B1 and the touch display area AA, and a second bending area BD2 located between the second binding area B2 and the touch display area AA.

[0041] The touch display panel A substrate 1; a touch electrode layer provided on the substrate 1 and located in the touch display area AA, the touch electrode layer including a plurality of touch electrodes (Tx and Rx) provided in the same layer and insulated from each other; The touch display panel further includes a plurality of touch lead wires 2 provided on the substrate 1, each of which is electrically connected to a corresponding touch electrode (Tx or Rx). A portion of the touch lead wires 2 extends from the touch display area AA through a first bending area BD1 to a first binding area B1, and this portion of the touch lead wires 2 is bent to the rear surface of the touch display panel at the first bending area BD1, and another portion of the touch lead wires 2 extends from the touch display area AA through a second bending area BD2 to a second binding area B2, and this other portion of the touch lead wires 2 is bent to the rear surface of the touch display panel at the second bending area BD2. Figures 3 to 7 in the embodiments of the present disclosure illustrate the configuration of the touch display panel using an example of a panel before bending.

[0042] The touch display panel provided in the embodiment of the present disclosure has a part of the touch lead wire extended to a first binding area and another part of the touch lead wire extended to a second binding area, where the first binding area and the second binding area are located on opposite sides of the touch display area. That is, the wiring method of the touch lead wire in the embodiment of the present disclosure is to extend it from the touch electrode to the binding areas on opposite sides of the touch display panel, thereby reducing the RC loading of the touch lead wire, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and realizing the performance index of the active pen.

[0043] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 3 to 6, the plurality of touch electrodes includes a plurality of first touch electrodes Tx and second touch electrodes Rx that are crossed vertically and horizontally, the plurality of touch lead wires 2 includes a first lead wire (21 and 21') and a second lead wire (22 and 22'), and the first binding region B1 and the second binding region B2 are located at both ends of the extension direction of the second touch electrode Rx, respectively.

[0044] Each first lead wire (21 and 21') is electrically connected to the first end of a corresponding first touch electrode Tx, with a portion of the first lead wire 21 extending from the touch display area AA through the first bending area BD1 to the first binding area B1, and another portion of the first lead wire 21' extending from the touch display area AA through the second bending area BD2 to the second binding area B2. As described above, the first lead wires (21 and 21') are drawn out from both sides to reduce the RC loading of the first lead wires (21 and 21'), thereby reducing the signal attenuation of the active pen and improving the signal-to-noise ratio of the active pen, thereby achieving the performance index of the active pen.

[0045] Each second lead wire (22 and 22') is electrically connected to the first end of a corresponding second touch electrode Rx, and the second lead wires (22 and 22') extend from the touch display area AA through the adjacent first bending area BD1 to the first binding area B1.

[0046] 3 to 6, in the touch display panel provided by the embodiment of the present disclosure, the plurality of touch wire leads 2 further include third wire leads (23 and 23') and fourth wire leads (24 and 24'), each of which is electrically connected to the second end of a corresponding first touch electrode Tx. A portion of the third wire lead 23 extends from the touch display area AA through the first bending area BD1 to the first binding area B1, and another portion of the third wire lead 23' extends from the touch display area AA through the second bending area BD2 to the second binding area B2. As described above, each first touch electrode Tx employs two lead wires. When a touch signal is applied, the touch signal can be applied simultaneously from the first end and the second end of the first touch electrode Tx, which improves the uniformity of the touch signal and thereby improves the touch control performance. In addition, the third lead wires (23 and 23') are also pulled out from both sides, which reduces the RC loading of the third lead wires (23 and 23'), thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen.

[0047] Each fourth lead wire (24, 24') is electrically connected to the second end of a corresponding second touch electrode Rx, and the fourth lead wires (24, 24') extend from the touch display area AA through the adjacent second bending area BD2 to the second binding area B2. As described above, each second touch electrode Rx adopts a double-sided lead wire, and when loading a touch signal, the touch signal can be loaded simultaneously from the first end and the second end of the second touch electrode Rx, which further improves the uniformity of the touch signal and thereby further improves the touch control performance. In addition, the second lead wires (22 and 22') and the fourth lead wires (24 and 24') electrically connected to the second touch electrodes Rx are respectively drawn to the adjacent binding regions, thereby reducing the RC loading of the second lead wires (22 and 22') and the fourth lead wires (24 and 24'), thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen, and realizing the performance index of the active pen.

[0048] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 3 and 4, the first binding area B1 includes a first sub-binding area B11 and a second sub-binding area B12 that are independently provided, and the first sub-binding area B11 is close to a first end of the first touch electrode Tx, and the second sub-binding area B12 is close to a second end of the first touch electrode Tx.

[0049] a portion of the first lead wire 21 extends from the touch display area AA through the first bending area BD1 to a side of the first sub-binding area B11 close to a first end of the first touch electrode Tx, and a portion of the third lead wire 23 extends from the touch display area AA through the first bending area BD1 to a side of the second sub-binding area B12 close to a second end of the first touch electrode Tx; A portion of the second lead wire 22 extends from the touch display area AA through the first bending area BD1 to the side of the first sub-binding area B12 away from the first end of the first touch electrode Tx, and another portion of the second lead wire 22' extends from the touch display area AA through the first bending area BD1 to the side of the second sub-binding area B12 away from the second end of the first touch electrode Tx. As described above, by extending a portion of the first lead wire 21 and a portion of the second lead wire 22 to the adjacent first sub-binding region B11, and extending a portion of the third lead wire 23 and another portion of the second lead wire 22' to the adjacent second sub-binding region B12, the RC loading of the first lead wire 21, the second lead wire (22 and 22') and the third lead wire 23 can be further reduced, thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen and realizing the performance index of the active pen.

[0050] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 3 , the second binding area B2 includes a third sub-binding area B21 and a fourth sub-binding area B22 that are independently provided, and the third sub-binding area B21 is close to a first end of the first touch electrode Tx, and the fourth sub-binding area B22 is close to a second end of the first touch electrode Tx.

[0051] Another portion of the first lead wire 21' extends from the touch display area AA through the second bending area BD2 to the side of the third sub-binding area B21 close to the first end of the first touch electrode Tx, and another portion of the third lead wire 23' extends from the touch display area AA through the second bending area BD2 to the side of the fourth sub-binding area B22 close to the second end of the first touch electrode Tx.

[0052] A portion of the fourth lead wire 24 extends from the touch display area AA through the second bending area BD2 to the side of the third sub-binding area B21 away from the first end of the first touch electrode Tx, and another portion of the fourth lead wire 24' extends from the touch display area AA through the second bending area BD2 to the side of the fourth sub-binding area B22 away from the second end of the first touch electrode Tx. As described above, by extending another portion of the first lead wire 21' and another portion of the fourth lead wire 24 to the adjacent third sub-binding region B21, and extending another portion of the third lead wire 23' and another portion of the fourth lead wire 24' to the adjacent fourth sub-binding region B22, the RC loading of the first lead wire 21', the fourth lead wire (24 and 24') and the third lead wire 23' is further reduced, thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen and realizing the active pen performance index.

[0053] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 4 , the second binding area B2 includes a fifth sub-binding area B23, a sixth sub-binding area B24, a seventh sub-binding area B25 and an eighth sub-binding area B26 that are arranged in order in the extension direction of the first touch electrode Tx and are independently provided.

[0054] Another portion of the first lead wire 21' extends from the touch display area AA through the second bending area BD2 to the side of the fifth sub-binding area B23 close to the first end of the first touch electrode Tx, and another portion of the third lead wire 23' extends from the touch display area AA through the second bending area BD2 to the side of the eighth sub-binding area B26 close to the second end of the first touch electrode Tx.

[0055] The fourth lead wires (24 and 24') are divided into a first group of fourth lead wires 241, a second group of fourth lead wires 242, a third group of fourth lead wires 243, and a fourth group of fourth lead wires 244 in the extending direction of the first touch electrodes Tx, and the fourth lead wires 241 of the first group extend from the touch display area AA through the second bending area BD2 to the side of the fifth sub-binding area B23 away from the first end of the first touch electrodes Tx. The fourth lead wires 242 of the second group extend from the touch display area AA through the second bending area BD2 to the side of the fifth sub-binding area B23 away from the first end of the first touch electrodes Tx. The fourth lead wire 243 of the third group extends from the touch display area AA through the second bending region BD2 to the side of the seventh sub-binding region B25 close to the second end of the first touch electrode Tx, and the fourth lead wire 244 of the fourth group extends from the touch display area AA through the second bending region BD2 to the side of the eighth sub-binding region B26 away from the second end of the first touch electrode Tx. As described above, by configuring the second binding area B2 to have four sub-binding areas, dividing the fourth lead wires (24 and 24') into four groups of lead wires, and extending the fourth lead wires of each group to the adjacent sub-binding area, the RC loading of the fourth lead wires (24 and 24') can be further reduced, thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen.

[0056] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 5 and 6 , the first binding region B1 is located in the central region of the peripheral region BB on the first end side of the second touch electrode Rx, and the first binding region B1 is divided into a first region B13, a second region B14, a third region B15 and a fourth region B16 arranged in sequence in the extension direction of the first touch electrode Tx, and the first region B13 is close to the first end of the first touch electrode Tx.

[0057] A portion of the first lead wire 21 extends from the touch display area AA through the first bending area BD1 to the first area B13, and a portion of the third lead wire 23 extends from the touch display area AA through the first bending area BD1 to the fourth area B16.

[0058] A portion of the second lead wire 22 extends from the touch display area AA through the first bending area BD1 to the second area B14, and another portion of the second lead wire 22' extends from the touch display area AA through the first bending area BD1 to the third area B15. As described above, by dividing the first binding area B1 into four areas and extending a portion of the first lead wire 21, a portion of the third lead wire 23, a portion of the second lead wire 22, and another portion of the second lead wire 22' to adjacent areas, the RC loading of the first lead wire 21, the third lead wire 23, and the second lead wire (22 and 22') is further reduced, thereby further reducing the active pen signal attenuation and improving the signal-to-noise ratio of the active pen, thereby achieving the active pen performance index.

[0059] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 5 , the second binding area B2 includes a ninth sub-binding area B27, a tenth sub-binding area B28, an eleventh sub-binding area B29 and a twelfth sub-binding area B20, which are arranged in order in the extension direction of the first touch electrode Tx and are independently provided.

[0060] Another portion of the first lead wire 21' extends from the touch display area AA through the second bending area BD2 to the side of the ninth sub-binding area B27 close to the first end of the first touch electrode Tx, and another portion of the third lead wire 23' extends from the touch display area AA through the second bending area BD2 to the side of the twelfth sub-binding area B20 close to the second end of the first touch electrode Tx.

[0061] The fourth lead wires (24 and 24') are divided into a fifth group of fourth lead wires 245, a sixth group of fourth lead wires 246, a seventh group of fourth lead wires 247, and an eighth group of fourth lead wires 248 in the extending direction of the first touch electrodes Tx, and the fourth lead wires 245 of the fifth group extend from the touch display area AA through the second bending area BD2 to the side of the ninth sub-binding area B27 away from the first end of the first touch electrode Tx. The fourth lead wires 246 of the sixth group extend from the touch display area AA through the second bending area BD2 to the side of the ninth sub-binding area B27 away from the first end of the first touch electrode Tx. The fourth lead wire 247 of the seventh group extends from the touch display area AA through the second bending region BD2 to the side of the tenth sub-binding region B28 close to the first end of the first touch electrode Tx, the fourth lead wire 247 of the seventh group extends from the touch display area AA through the second bending region BD2 to the side of the eleventh sub-binding region B29 close to the second end of the first touch electrode Tx, and the fourth lead wire 248 of the eighth group extends from the touch display area AA through the second bending region BD2 to the side of the twelfth sub-binding region B20 away from the second end of the first touch electrode Tx. As described above, by configuring the second binding area B2 to have four sub-binding areas, dividing the fourth lead wires (24 and 24') into four groups of lead wires, and extending the fourth lead wires of each group to the adjacent sub-binding area, the RC loading of the fourth lead wires (24 and 24') can be further reduced, thereby further reducing the active pen signal attenuation, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen.

[0062] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 6 , the second binding area B2 is located in the central area of ​​the peripheral area BB on the second end side of the second touch electrode Rx, and the second binding area B2 is divided into a fifth area B201, a sixth area B202, a seventh area B203 and an eighth area B204 arranged in sequence in the extension direction of the first touch electrode Tx, and the fifth area B201 is close to the first end of the first touch electrode Tx.

[0063] Another portion of the first lead wire 21' extends from the touch display area AA through the second bending area BD2 to the fifth area B201, and another portion of the third lead wire 23' extends from the touch display area AA through the second bending area BD2 to the eighth area B204.

[0064] A portion of the fourth lead wire 24 extends from the touch display area AA through the second bending area BD2 to the sixth area B202, and another portion of the fourth lead wire 24' extends from the touch display area AA through the second bending area BD2 to the seventh area B203. As described above, by dividing the second binding area B2 into four areas and extending another portion of the first lead wire 21', another portion of the third lead wire 23', another portion of the fourth lead wire 24, and another portion of the fourth lead wire 24' to adjacent areas, the RC loading of the first lead wire 21', the third lead wire 23', and the fourth lead wire (24 and 24') is further reduced, thereby further reducing the active pen signal attenuation and improving the signal-to-noise ratio of the active pen, thereby achieving the active pen performance index.

[0065] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 3 to 6, 8A to 8D, and 9A to 9D, FIG. 8A is an enlarged schematic view of a dashed block C1 in FIG. 4, FIG. 8B is an enlarged schematic view of a dashed block C2 in FIG. 8A, FIG. 8C is an enlarged schematic view of a dashed block C3 in FIG. 8B, FIG. 8D is an enlarged schematic view of a dashed block C4 in FIG. 8B, FIG. 8E is a cross-sectional schematic view of a portion of the film layer in a direction toward the second binding region B2 of the second bending region BD2 in the dashed block C4 in FIG. 8B, and 9A is an enlarged schematic view of the dashed block E1 in FIG. 4 , FIG. 9B is an enlarged schematic view of the dashed block E2 in FIG. 9A , FIG. 9C is an enlarged schematic view of the dashed block E3 in FIG. 9A , and FIG. 9D is an enlarged schematic view of the dashed block E4 in FIG. A gap D1 is defined between the first lead wire 21 electrically connected to the first touch electrode Tx closest to the first end of the second touch electrode Rx and the second lead wire 22 electrically connected to the second touch electrode Rx closest to the first end of the first touch electrode Tx, and the width of the first gap D1 is 70 μm or more. This reduces signal interference between the first lead wire 21 and the second lead wire 22, improving the signal stability of the touch display panel and the signal stability of the operating environment of the active pen, thereby improving key performance such as SNR and linearity of the active pen.

[0066] The gap between the third lead wire 23 electrically connected to the first touch electrode Tx closest to the first end of the second touch electrode Rx and the second lead wire 22' electrically connected to the second touch electrode Rx closest to the second end of the first touch electrode Tx is called a second gap D2, and the width of the second gap D2 is 70 μm or more. This reduces signal interference between the third lead wire 23 and the second lead wire 22', improving the signal stability of the touch display panel and the signal stability of the operating environment of the active pen, thereby improving key performance such as SNR and linearity of the active pen.

[0067] The gap between the first lead wire 21' electrically connected to the first touch electrode Tx closest to the second end of the second touch electrode Rx and the fourth lead wire 24 electrically connected to the second touch electrode Rx closest to the first end of the first touch electrode Tx is called a third gap D3, and the width of the third gap D3 is 70 μm or more. This reduces signal interference between the first lead wire 21' and the fourth lead wire 24, improving the signal stability of the touch display panel and the signal stability of the operating environment of the active pen, thereby improving key performance such as SNR and linearity of the active pen.

[0068] The gap between the third lead wire 23' electrically connected to the first touch electrode Tx closest to the second end of the second touch electrode Rx and the fourth lead wire 24' electrically connected to the second touch electrode Rx closest to the second end of the first touch electrode Tx is called a fourth gap D4, and the width of the fourth gap D4 is 70 μm or more. This reduces signal interference between the third lead wire 23' and the fourth lead wire 24', improving the signal stability of the touch display panel and the signal stability of the operating environment of the active pen, thereby improving key performance such as SNR and linearity of the active pen.

[0069] In a specific embodiment, in the touch display panel provided by the exemplary embodiment of the present disclosure, as shown in FIGS. 4, 9B, and 9C, a first shielding wire 31 connected to ground is provided within the first gap D1. A constant voltage signal can also be loaded to the first shielding wire 31. When the first shielding wire 31 is loaded with a constant voltage signal or grounded, it can effectively shield signal interference between the first lead wire 21 and the second lead wire 22, thereby ensuring the stability of the signals of the first lead wire 21 and the second lead wire 22. As shown in FIGS. 4 and 8C, a third shielding wire 33 is provided within the third gap D3. The third shielding wire 33 can be grounded or a constant voltage signal can be loaded to the third shielding wire 33. When the third shielding wire 33 is loaded with a constant voltage signal or grounded, it can effectively shield signal interference between the first lead wire 21′ and the fourth lead wire 24, thereby ensuring the stability of the signals of the first lead wire 21′ and the fourth lead wire 24.

[0070] 4, a second shield wire (not shown) connected to ground is provided within the second gap D2, and a constant voltage signal can be loaded to the second shield wire. When the second shield wire is loaded with a constant voltage signal or grounded, it is possible to effectively shield against mutual signal interference between the second lead wire 22′ and the third lead wire 23, thereby ensuring the stability of the signals of the second lead wire 22′ and the third lead wire 23. A fourth shield wire (not shown) connected to ground is provided within the fourth gap D4, and a constant voltage signal can be loaded to the fourth shield wire. When the fourth shield wire is loaded with a constant voltage signal or grounded, it is possible to effectively shield against mutual signal interference between the third lead wire 23′ and the fourth lead wire 24′, thereby ensuring the stability of the signals of the third lead wire 23′ and the fourth lead wire 24′.

[0071] Specifically, as shown in FIGS. 3, 5, and 6, a first shield wire (not shown) that is grounded is provided in the first gap D1, a second shield wire (not shown) that is grounded is provided in the second gap D2, a third shield wire (not shown) that is grounded is provided in the third gap D3, and a fourth shield wire (not shown) that is grounded is provided in the fourth gap D4.

[0072] Specifically, as shown in Figures 4, 9A and 9C, the left side of the first sub-binding area B11 is a binding area corresponding to the first lead wire 21, the right side of the first sub-binding area B11 is a binding area corresponding to the second lead wire 22, and the area between the rightmost first lead wire 21 and the leftmost second lead wire 22 corresponding to the first sub-binding area B11 is a binding area corresponding to the first shield wire 31. The first shield wire 31 is pulled downward from the middle area of ​​the first sub-binding area B11 and branches out, one branch surrounding the rightmost first lead wire 21 in a counterclockwise direction and extending to the leftmost end of the first gap D1, and the other branch surrounding the leftmost second lead wire 22 and extending to the rightmost end of the first gap D1. This allows the first shield wire 31 to completely insulate the first lead wire 21 and the second lead wire 22, thereby avoiding mutual interference.

[0073] Optionally, the second shielded line, the third shielded line and the fourth shielded line are arranged in a similar manner to the first shielded line.

[0074] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in Figures 3 to 6, a portion of the first lead wire 21 crosses over to the first binding region B1 in the first bending region BD1, and another portion of the first lead wire 21' crosses over to the second binding region B2 in the second bending region BD2.

[0075] A part of the third lead wire 23 extends across the first binding region B1 in the first bending region BD1, and another part of the third lead wire 23' extends across the second binding region B2 in the second bending region BD2.

[0076] The second lead wires (22 and 22') cross over to the first binding region B1 in the first bending region BD1, and the fourth lead wires (24 and 24') cross over to the second binding region B2 in the second bending region BD2. As described above, after the touch display panel is bound to the flexible circuit board (FPC), both the first binding region B1 and the second binding region B2 can be folded to the back surface of the display panel, thereby achieving a narrow bezel.

[0077] 3 to 6, 8D, and 9D, in the touch display panel provided by the embodiment of the present disclosure, the first bending region BD1 includes a plurality of first jumper wires 41 arranged in order in the extension direction of the first touch electrodes Tx, and the second bending region BD2 includes a plurality of second jumper wires 42 arranged in order in the extension direction of the first touch electrodes Tx. Because the touch display panel has a large wiring space in the upper bezel and a limited space in the lower bezel, the number of second jumper wires 42 electrically connected to one touch lead wire 2 extending to the second binding region B2 may be less than the number of first jumper wires 41 electrically connected to one touch lead wire 2 extending to the first binding region B1.

[0078] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in Figures 3 to 6, 8D and 9D, one of the first lead wires 21 among a portion of the first lead wires 21 is electrically connected to at least three corresponding first jumper wires 41, thereby increasing the width of the first lead wire 21 and reducing the resistance of the first lead wire 21. Furthermore, when a first jumper wire 41 is broken due to a process such as bending, the first lead wire 21 can be ensured to be electrically connected to the other unbroken first jumper wires 41, thereby improving the amount of touch signals. One of the third lead wires 23 is electrically connected to at least three corresponding first jumper wires 41, thereby increasing the width of the third lead wire 23 and reducing the resistance of the third lead wire 23. Furthermore, if one first jumper wire 41 is broken due to a process such as bending, the third lead wire 23 can be ensured to be electrically connected to the other unbroken first jumper wires 41, thereby improving the amount of touch signals. One second lead wire (22 and 22') is electrically connected to at least three corresponding first jumper wires 41, which increases the width of the second lead wires (22 and 22') and reduces the resistance of the second lead wires (22 and 22'). Furthermore, when one first jumper wire 41 is broken due to a process such as bending, the second lead wires (22 and 22') can be ensured to be electrically connected to the other unbroken first jumper wires 41, thereby improving the amount of touch signals.

[0079] One of the other parts of the first lead wires 21' may be electrically connected to at least two (e.g., two) corresponding second jumper wires 42, thereby increasing the width of the first lead wire 21' and lowering the resistance of the first lead wire 21'. Furthermore, if one second jumper wire 42 breaks, the first lead wire 21' can be electrically connected to the other unbroken second jumper wires 42, thereby improving the amount of touch signals. One of the other parts of the third lead wires 23' may be electrically connected to at least two corresponding second jumper wires 42, thereby increasing the width of the third lead wire 23' and lowering the resistance of the third lead wire 23'. Furthermore, if one second jumper wire 42 breaks, the third lead wire 23' can be electrically connected to the other unbroken second jumper wires 42, thereby improving the amount of touch signals. One fourth lead wire (24 and 24') is electrically connected to at least two corresponding second jumper wires 42, which increases the width of the fourth lead wires (24 and 24') and reduces the resistance of the fourth lead wires (24 and 24'). Furthermore, if one second jumper wire 42 breaks, the fourth lead wires (24 and 24') can be electrically connected to the other unbroken second jumper wires 42, thereby improving the amount of touch signals.

[0080] The configuration of the touch electrode in the embodiment of the present disclosure is the same as the configuration shown in FIGS. 1 and 2, and the difference between the embodiment of the present disclosure and FIG. 2 is the wiring method of the touch lead wire.

[0081] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 1 to 6 and 8E, FIG. 1 is a schematic cross-sectional view of the touch control structure 30 along the DD' direction in FIG. 2, in which the first touch electrode Tx has an integral structure, the second touch electrode Rx has a plurality of sub-touch electrodes Rx' and a plurality of connecting portions LK spaced apart by a plurality of first touch electrodes Tx, and the touch display panel further has a first insulating layer 70 located between the sub-touch electrode Rx' and the connecting portion LK, the connecting portion LK being close to the substrate 1, and each of two adjacent sub-touch electrodes Rx' is electrically connected to the connecting portion LK by a via hole penetrating the first insulating layer 70. The touch display panel comprises a first source-drain metal layer (SD1), a second insulating layer (not shown) and a second source-drain metal layer (SD2) sequentially stacked between a substrate 1 and a connection portion LK, and the first source-drain metal layer is close to the substrate 1, i.e., the first source-drain metal layer (SD1), the second insulating layer and the second source-drain metal layer (SD2) are located inside the display panel 10 in FIG. 1.

[0082] The touch lead wires 2 (21, 21', 22, 22', 23, 23', 24, 24') have electrically connected first and second metallic wires in the portions other than the first bending region BD1 and the second bending region BD2. As shown in FIG. 8E, taking the first lead wire 21' as an example, the portion of the first lead wire 21' other than the second bending region BD2 has electrically connected first and second metallic wires 201 and 202. The first metallic wire 201 may be provided in the same layer as the connection portion LK shown in FIG. 1, and the second metallic wire 202 may be provided in the same layer as the first touch electrode Tx. As described above, the touch lead wires 2 employ double metal wiring to reduce the resistance of the touch lead wires 2 and improve signal transmission performance.

[0083] Of the touch lead wires 2 (21, 21', 22, 22', 23, 23', 24, 24'), the portions corresponding to the first bending region BD1 and the second bending region BD2 are third metallic wires located in the second source-drain metal layer (SD2). As shown in FIG. 8E, taking the first lead wire 21' as an example, the portion of the first lead wire 21' corresponding to the second bending region BD2 is a third metallic wire 203 (i.e., a second jumper wire 42) located in the second source-drain metal layer (SD2). The first metallic wire 201 and the third metallic wire 203 (42) are electrically connected by a via hole penetrating the second insulating layer (which may have several flat layers and blunt layers) between the second source-drain metal layer (SD2) and the connection portion LK. Of course, the second metallic wire 202 and the third metallic wire 203 may be electrically connected by a via hole penetrating the third insulating layer (which may have several flat layers and blunt layers) between the second source-drain metal layer and the first touch electrode Tx, so that the first bending region BD1 and the second bending region BD2 only adopt the second source-drain metal layer (SD2) and can improve the bending performance.

[0084] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 7, the plurality of touch electrodes includes a plurality of first touch electrodes Tx and second touch electrodes Rx that are crossed vertically and horizontally, and the first binding area B1 and the second binding area B2 are respectively located at both ends of the extension direction of the second touch electrode Rx.

[0085] The peripheral region BB further includes a third binding region B3 and a fourth binding region B4, which are located at both ends of the extension direction of the first touch electrode Tx, and the peripheral region BB further includes a third bending region BD3 located between the third binding region B3 and the touch display region AA, and a fourth bending region BD4 located between the fourth binding region B4 and the touch display region AA.

[0086] The plurality of touch lead wires 2 include first lead wires (21 and 21') and second lead wires (22 and 22'), each of which is electrically connected to the first end of a corresponding first touch electrode Tx, and the first lead wires (21 and 21') extend from the touch display area AA through the adjacent third bending area BD3 to the third binding area B3.

[0087] Each second lead wire (22, 22') is electrically connected to the first end of a corresponding second touch electrode Rx, and the second lead wires (22, 22') extend from the touch display area AA through the adjacent first bending area BD1 to the first binding area B1. As described above, by extending the first lead wires (21, 21') to the adjacent third binding area B3 and extending the second ends of the second lead wires (22, 22') to the adjacent first binding area B1, the RC loading of the first lead wires (21, 21') and the second lead wires (22, 22') can be reduced, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen.

[0088] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 7 , the plurality of touch wire leads 2 further include third wire leads (23 and 23') and fourth wire leads (24 and 24'), each of which is electrically connected to the second end of a corresponding first touch electrode Tx. The third wire leads (23 and 23') extend from the touch display area AA through the adjacent fourth bending area to the fourth binding area B4. As described above, each first touch electrode Tx employs two lead wires. When a touch signal is applied, the touch signal can be applied simultaneously from the first end and the second end of the first touch electrode Tx, which improves the uniformity of the touch signal and thereby improves the touch control performance.

[0089] Each fourth lead wire (24, 24') is electrically connected to the second end of a corresponding second touch electrode Rx, and the fourth lead wires (24, 24') extend from the touch display area AA through the adjacent second bending area BD2 to both ends of the second binding area B2. As described above, each second touch electrode Rx adopts a double-sided lead wire, and when loading a touch signal, the touch signal can be loaded simultaneously from the first end and the second end of the second touch electrode Rx, which further improves the uniformity of the touch signal and thereby further improves the touch control performance. In addition, by extending the third lead wires (23 and 23') to the adjacent fourth binding region B4 and extending the second ends of the fourth lead wires (24 and 24') to the adjacent second binding region B2, the RC loading of the third lead wires (23 and 23') and the fourth lead wires (24 and 24') is reduced, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen.

[0090] 7, in the touch display panel provided by the embodiment of the present disclosure, the first lead wires (21 and 21') cross over to the third binding region B3 in the third bending region BD3, the second lead wires (22 and 22') cross over to the first binding region B1 in the first bending region BD1, the third lead wires (23 and 23') cross over to the fourth binding region B4 in the fourth bending region BD4, and the fourth lead wires (24 and 24') cross over to the second binding region B2 in the second bending region BD2. As described above, after the touch display panel is bound to the flexible printed circuit (FPC), the first binding region B1, the second binding region B2, the third binding region B3, and the fourth binding region B4 can all be folded to the back surface of the display panel to achieve a narrow bezel.

[0091] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIG. 7 , the first bending region BD1 includes a plurality of first jumper wires 41 arranged in sequence in the extension direction of the first touch electrode Tx, the second bending region BD2 includes a plurality of second jumper wires 42 arranged in sequence in the extension direction of the first touch electrode Tx, the third bending region BD3 includes a plurality of third jumper wires 43 arranged in sequence in the extension direction of the second touch electrode Rx, and the fourth bending region BD4 includes a plurality of fourth jumper wires 44 arranged in sequence in the extension direction of the second touch electrode Rx.

[0092] One first lead wire (21 and 21') is electrically connected to at least two corresponding third jumper wires 43, thereby increasing the width of the first lead wires (21 and 21') and reducing the resistance of the first lead wires (21 and 21'). Furthermore, when one third jumper wire 43 breaks, the first lead wires (21 and 21') are electrically connected to the other unbroken third jumper wires 43, thereby ensuring improved touch signal quality. One second lead wire (22 and 22') is electrically connected to at least two corresponding first jumper wires 41, thereby increasing the width of the second lead wires (22 and 22') and reducing the resistance of the second lead wires (22 and 22'). Furthermore, when one first jumper wire 41 breaks, the second lead wires (22 and 22') are electrically connected to the other unbroken first jumper wires 41, thereby ensuring improved touch signal quality. One third lead wire (23 and 23') is electrically connected to at least two corresponding fourth jumper wires 44, thereby increasing the width of the third lead wires (23 and 23') and reducing the resistance of the third lead wires (23 and 23'). Furthermore, if one fourth jumper wire 44 breaks, the third lead wires (23 and 23') are electrically connected to the other unbroken fourth jumper wires 44, thereby ensuring improved touch signal quality. One fourth lead wire (24 and 24') is electrically connected to at least two corresponding second jumper wires 42, thereby increasing the width of the fourth lead wires (24 and 24') and reducing the resistance of the fourth lead wires (24 and 24'). Furthermore, if one second jumper wire 42 breaks, the fourth lead wires (24 and 24') are electrically connected to the other unbroken second jumper wires 42, thereby ensuring improved touch signal quality.

[0093] 8A and 8B , in the touch display panel provided by the embodiment of the present disclosure, the touch display panel further includes a low-voltage power line VSS located in the peripheral region BB, where the low-voltage power line VSS is usually arranged to surround the touch area AA and is usually arranged in the same layer as the data signal lines of the display panel. The touch lead wire 2 is drawn out from the binding region, and the low-voltage power line VSS separates and shields the display signals (e.g., data signals and scanning signals) of the display panel from the touch signals. The touch lead wire 2 is routed over the low-voltage power line VSS, passes through the bending region, and is introduced into the binding region above the bending region.

[0094] In a specific embodiment, in the touch display panel provided by the embodiment of the present disclosure, as shown in FIGS. 1 and 7 , the first touch electrode Tx has an integral structure, the second touch electrode Rx has a plurality of sub-touch electrodes Rx′ and a plurality of connecting portions LK spaced apart by a plurality of first touch electrodes Tx, and the touch display panel further has a first insulating layer 70 located between the sub-touch electrode Rx′ and the connecting portion LK, the connecting portion LK being close to the substrate 1, and each of two adjacent sub-touch electrodes Rx′ is electrically connected to the connecting portion LK by a via hole penetrating the first insulating layer 70. The touch display panel comprises a first source-drain metal layer (SD1), a second insulating layer (not shown) and a second source-drain metal layer (SD2) sequentially stacked between a substrate 1 and a connection portion LK, and the first source-drain metal layer is close to the substrate 1, i.e., the first source-drain metal layer (SD1), the second insulating layer and the second source-drain metal layer (SD2) are located inside the display panel 10 in FIG. 1.

[0095] The touch lead wires 2 (21, 21', 22, 22', 23, 23', 24, 24') have electrically connected first and second metallic wires in the portions corresponding to the touch lead wires 2 other than the first bending region BD1, the second bending region BD2, the third bending region BD3, and the fourth bending region BD4, and the first metallic wire may be provided in the same layer as the connection portion LK, and the second metallic wire may be provided in the same layer as the first touch electrode Tx. As described above, the touch lead wires 2 employ double metal wiring to reduce the resistance of the touch lead wires 2 and improve signal transmission performance.

[0096] The portions of the touch lead wire 2 (21, 21', 22, 22', 23, 23', 24, 24') corresponding to the first bending region BD1, the second bending region BD2, the third bending region BD3 and the fourth bending region BD4 are third metallic wires located in the second source-drain metal layer (SD2), and the first metallic wire and the third metallic wire are electrically connected by a via hole penetrating the second insulating layer (which may have several flat layers and blunt layers) between the second source-drain metal layer and the connection portion LK, or the second metallic wire and the third metallic wire are electrically connected by a via hole penetrating the third insulating layer (which may have several flat layers and blunt layers) between the second source-drain metal layer and the first touch electrode Tx.

[0097] 8A to 8D and 9A to 9D in the embodiments of the present disclosure merely schematically illustrate the wiring method of the touch lead wire, and other film layers are not described in detail, but of course, the other film layers are the same as those in the related art.

[0098] Based on the same inventive idea, an embodiment of the present disclosure further provides a touch display device, as shown in FIG. 10 , including the touch display panel provided by the embodiment of the present disclosure and at least two flexible circuit boards located on the back surface of the touch display panel, where each binding area of ​​the touch display panel has a plurality of first bonding pads, and touch lead wires are electrically connected to the corresponding flexible circuit boards via the first bonding pads. Because the principle by which this touch display device solves problems is similar to that of the previously described touch display panel, implementations of this display device may refer to previous implementations of the touch display panel, and overlapping parts will be omitted. The touch display device may be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigation system.

[0099] In a specific embodiment, in the touch display device provided by the embodiment of the present disclosure, as shown in Fig. 10, Fig. 10 is a schematic diagram of the rear surface of the touch display device, and the touch display panel in Fig. 10 takes the configuration shown in Fig. 4 of the touch display panel as an example, that is, the first binding area B1 includes a first sub-binding area B11 and a second sub-binding area B12 that are independently provided, and the second binding area B2 includes a fifth sub-binding area B23, a sixth sub-binding area B24, a seventh sub-binding area B25, and an eighth sub-binding area B26 that are independently provided and sequentially arranged in the extension direction of the first touch electrode Tx. In addition, Fig. 10 shows that both the first binding area B1 and the second binding area B2 are folded to the rear surface of the touch display panel.

[0100] The at least two flexible circuit boards include a first flexible circuit board FPC1, a second flexible circuit board FPC2, a third flexible circuit board FPC3, a fourth flexible circuit board FPC4, a fifth flexible circuit board FPC5 and a sixth flexible circuit board FPC6, and the back surface of the touch display panel further includes a printed circuit board (PCB), which is close to the second binding area B2 and extends in the extension direction of the first touch electrode Tx.

[0101] A terminal at one end of the first flexible circuit board FPC1 is bonded to a first bonding pad in the first sub-binding area B11, a terminal at one end of the second flexible circuit board FPC2 is bonded to a first bonding pad in the second sub-binding area B12, and the other ends of the first flexible circuit board FPC1 and the second flexible circuit board FPC2 are electrically connected to a printed circuit board (PCB) at locations close to the eighth sub-binding area B26; A terminal at one end of the third flexible circuit board FPC3 is bonded to a first bonding pad in the fifth sub-binding area B23, a terminal at one end of the fourth flexible circuit board FPC4 is bonded to a first bonding pad in the sixth sub-binding area B24, a terminal at one end of the fifth flexible circuit board FPC5 is bonded to a first bonding pad in the seventh sub-binding area B25, and a terminal at one end of the sixth flexible circuit board FPC6 is bonded to a first bonding pad in the eighth sub-binding area B26, The other end terminal of the third flexible circuit board FPC3 is bonded to a printed circuit board (PCB), the other end terminal of the fourth flexible circuit board FPC4 is bonded to a printed circuit board (PCB), the other end terminal of the fifth flexible circuit board FPC5 is bonded to a printed circuit board (PCB), and the other end terminal of the sixth flexible circuit board FPC6 is bonded to a printed circuit board (PCB). In a specific embodiment, in the touch display device provided by the embodiment of the present disclosure, as shown in FIG. 10, the wiring on the first flexible circuit board FPC1 and the second flexible circuit board FPC2 needs to be drawn from the first binding area (B11 and B12) side to the second binding area (B23, B24, B25, B26) side. Therefore, to prevent the FPC warping phenomenon from occurring in the bending area when bending, branch wiring is adopted when the wiring of FPC1 and the wiring of FPC2 are wired to the second binding area, that is, a single-point gap is maintained between the wiring of FPC1 and the wiring of FPC2, and the wiring of FPC1 and the wiring of FPC2 adopt a snake-like configuration and are engaged and connected to the lower PTC.

[0102] In a specific embodiment, in the touch display device provided by the embodiment of the present disclosure, as shown in FIG. 10 , a printed circuit board (PCB) includes a first source driver chip IC1, a second source driver chip IC2, a third source driver chip IC3, and a fourth source driver chip IC4, where the first source driver chip IC1 is located in a central region of a side of the third flexible circuit board FPC3 remote from the first flexible circuit board FPC1, the second source driver chip IC2 is located in a central region of a side of the fourth flexible circuit board FPC4 remote from the first flexible circuit board FPC1, the third source driver chip IC3 is located in a central region of a side of the fifth flexible circuit board FPC5 remote from the first flexible circuit board FPC1, and the fourth source driver chip IC4 is located in a central region of a side of the sixth flexible circuit board FPC6 remote from the first flexible circuit board FPC1.

[0103] The printed circuit board (PCB) further includes a touch driver chip T-IC located at a corner thereof, the touch driver chip T-IC being close to the third flexible circuit board FPC3, and the touch driver chip T-IC transmitting touch signals to the first flexible circuit board FPC1, the second flexible circuit board FPC2, the third flexible circuit board FPC3, the fourth flexible circuit board FPC4, the fifth flexible circuit board FPC5 and the sixth flexible circuit board FPC6 through wiring on the printed circuit board (PCB), thereby realizing the loading of touch signals to the touch lead wires 2.

[0104] In a specific embodiment, the touch display device provided by the embodiment of the present disclosure further includes an active pen. The embodiment of the present disclosure provides a wiring method for touch lead wires that extend from the first end of the touch electrode to binding regions on opposite sides of the touch display panel, thereby reducing the RC loading of the touch lead wires, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and achieving the performance index of the active pen, solving the critical problem of the active pen inability to achieve touch control function in large OLED display panels, and thereby improving the core competitiveness of large OLED display products.

[0105] Note that Figure 10 of the embodiment of the present disclosure explains the configuration of the back surface of the touch display device using the configuration shown in Figure 4 as an example, and of course, for the configurations shown in Figures 3 and 5 to 7, the configuration of the back surface of the touch display device is designed according to the difference in the binding area.

[0106] Based on the same inventive idea, an embodiment of the present disclosure provides a touch substrate, comprising a touch area and a non-touch area surrounding the touch area, wherein the non-touch area comprises a first binding area and a second binding area located opposite the touch area, a first bending area located between the first binding area and the touch area, and a second bending area located between the second binding area and the touch area; A substrate; a touch electrode layer provided on the substrate and located in the touch area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; The touch substrate further includes a plurality of touch lead wires provided on the substrate, each touch lead wire electrically connected to a corresponding one of the touch electrodes, wherein a portion of the touch lead wires extends from the touch area through a first bending area to a first binding area, and another portion of the touch lead wires extends from the touch area through a second bending area to a second binding area.

[0107] The embodiment of the present disclosure provides the touch substrate, in which a portion of the touch lead wire is extended to a first binding area and another portion of the touch lead wire is extended to a second binding area, where the first binding area and the second binding area are located on opposite sides of the touch display area. That is, the wiring method of the touch lead wire in the embodiment of the present disclosure extends from the touch electrode to the binding areas on opposite sides of the touch display panel, thereby reducing the RC loading of the touch lead wire, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and realizing the performance index of the active pen.

[0108] In a specific embodiment, in the touch substrate provided by the embodiment of the present disclosure, the plurality of touch electrodes comprises a plurality of first touch electrodes and a plurality of second touch electrodes crossing each other vertically and horizontally, the plurality of touch lead wires comprises a first lead wire and a second lead wire, and the first binding area and the second binding area are respectively located at both ends of the extension direction of the second touch electrode.

[0109] Each first lead wire is electrically connected to a first end of a corresponding one of the first touch electrodes, and a portion of the first lead wire extends from the touch area through the first bending area to the first binding area, and another portion of the first lead wire extends from the touch area through the second bending area to the second binding area.

[0110] Each second lead wire is electrically connected to a first end of a corresponding second touch electrode and extends from the second lead wire touch area through an adjacent first bending area to a first binding area.

[0111] In a specific embodiment, in the touch substrate provided by the embodiment of the present disclosure, the plurality of touch lead wires further include a third lead wire and a fourth lead wire, each of the third lead wires is electrically connected to the second end of a corresponding one of the first touch electrodes, a part of the third lead wire extends from the touch area through the first bending area to the first binding area, and another part of the third lead wire extends from the touch area through the second bending area to the second binding area; Each fourth lead wire is electrically connected to the second end of a corresponding one of the second touch electrodes, and the fourth lead wire extends from the touch area through the adjacent second bending area to the second binding area.

[0112] In a specific embodiment, in the touch substrate provided by the embodiment of the present disclosure, the first binding region comprises a first sub-binding region and a second sub-binding region that are independently provided, the first sub-binding region being close to a first end of a first touch electrode, and the second sub-binding region being close to a second end of the first touch electrode.

[0113] A portion of the first lead wire extends from the touch area through the first bending area to a side of the first sub-binding area that is close to the first end of the first touch electrode, and a portion of the third lead wire extends from the touch area through the first bending area to a side of the second sub-binding area that is close to the second end of the first touch electrode.

[0114] A portion of the second lead wire extends from the touch area through the first bending region to a side of the first sub-binding region that is remote from the first end of the first touch electrode, and another portion of the second lead wire extends from the touch area through the first bending region to a side of the second sub-binding region that is remote from the second end of the first touch electrode.

[0115] In a specific embodiment, in the touch substrate provided by the embodiment of the present disclosure, the second binding region includes a fifth sub-binding region, a sixth sub-binding region, a seventh sub-binding region and an eighth sub-binding region which are arranged in order in the extension direction of the first touch electrode and are independently provided.

[0116] Another portion of the first lead wire extends from the touch display area through the second bending region to the side of the fifth sub-binding region that is close to the first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending region to the side of the eighth sub-binding region that is close to the second end of the first touch electrode.

[0117] The fourth lead wire is divided into a first group of fourth lead wires, a second group of fourth lead wires, a third group of fourth lead wires, and a fourth group of fourth lead wires in the extending direction of the first touch electrode, the fourth lead wires of the first group extending from the touch display area through the second bending area to a side of a fifth sub-binding area away from the first end of the first touch electrode, and the fourth lead wires of the second group extending from the touch display area through the second bending area to a side of a fifth sub-binding area away from the first end of the first touch electrode. The fourth lead wire of the third group extends from the touch display area through the second bending region to the side of the sixth sub-binding region that is close to the first end of the first touch electrode, the fourth lead wire of the third group extends from the touch display area through the second bending region to the side of the seventh sub-binding region that is close to the second end of the first touch electrode, and the fourth lead wire of the fourth group extends from the touch display area through the second bending region to the side of the eighth sub-binding region that is away from the second end of the first touch electrode.

[0118] It should be noted that the touch substrate embodiments provided by the embodiments of the present disclosure refer to the previous description of the wiring of the touch lead wires in the touch display panel, which is omitted here.

[0119] An embodiment of the present disclosure provides a touch substrate, a touch display panel, and a touch display device, in which a part of a touch lead wire is extended to a first binding area and another part of the touch lead wire is extended to a second binding area, where the first binding area and the second binding area are located on opposite sides of the touch display area. That is, the wiring method of the touch lead wire in the embodiment of the present disclosure extends from the touch electrode to the binding areas on opposite sides of the touch display panel, thereby reducing the RC loading of the touch lead wire, thereby reducing the signal attenuation of the active pen, improving the signal-to-noise ratio of the active pen, and realizing the performance index of the active pen. Although preferred embodiments of the present disclosure have been described, those skilled in the art may make further changes and modifications to these embodiments once they have acquired the underlying inventive concept. It is therefore intended that the following claims be interpreted to include the preferred embodiments and all changes and modifications within the scope of the present disclosure.

[0120] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Therefore, if these modifications and variations of the embodiments of the present disclosure are within the scope of the claims of the present disclosure and their technical equivalents, the present disclosure also intends to include such modifications and variations.

Claims

1. A touch display panel comprising a touch display area and a peripheral area surrounding the touch display area, the peripheral area including a first binding area and a second binding area located on the opposite side of the touch display area, a first bending area located between the first binding area and the touch display area, and a second bending area located between the second binding area and the touch display area, A substrate; a touch electrode layer provided on the substrate and located in the touch display area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; a plurality of touch lead wires provided on the substrate, each of the touch lead wires electrically connected to a corresponding one of the touch electrodes, wherein a portion of the touch lead wires extends from the touch display area through the first bending area to the first binding area, and the portion of the touch lead wires is bent at the first bending area to the rear surface of the touch display panel, and another portion of the touch lead wires extends from the touch display area through the second bending area to the second binding area, and the other portion of the touch lead wires is bent at the second bending area to the rear surface of the touch display panel, Touch display panel.

2. the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are crossed vertically and horizontally; the plurality of touch lead wires include a first lead wire and a second lead wire; the first binding region and the second binding region are located at both ends of the second touch electrode in an extending direction, respectively; each of the first lead wires is electrically connected to a first end of a corresponding one of the first touch electrodes, a portion of the first lead wire extends from the touch display area through the first bending area to the first binding area, and another portion of the first lead wire extends from the touch display area through the second bending area to the second binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch display area through the first bending area adjacent thereto to the first binding area.

10. The touch display panel of claim 1.

3. the plurality of touch lead wires further include a third lead wire and a fourth lead wire, each of the third lead wires electrically connected to a second end of a corresponding one of the first touch electrodes, a portion of the third lead wire extending from the touch display area through the first bending area to the first binding area, and another portion of the third lead wire extending from the touch display area through the second bending area to the second binding area; Each of the fourth lead wires is electrically connected to a second end of a corresponding one of the second touch electrodes, and the fourth lead wires extend from the touch display area through the second bending area adjacent thereto to the second binding area.

3. The touch display panel of claim 2.

4. the first binding region includes a first sub-binding region and a second sub-binding region that are independently provided, the first sub-binding region being close to a first end of the first touch electrode, and the second sub-binding region being close to a second end of the first touch electrode; a portion of the first lead wire extends from the touch display area through the first bending area to a side of the first sub-binding area close to a first end of the first touch electrode, and a portion of the third lead wire extends from the touch display area through the first bending area to a side of the second sub-binding area close to a second end of the first touch electrode; a portion of the second lead wire extends from the touch display area through the first bending area to a side of the first sub-binding area that is remote from a first end of the first touch electrode, and another portion of the second lead wire extends from the touch display area through the first bending area to a side of the second sub-binding area that is remote from a second end of the first touch electrode; 4. The touch display panel of claim 3.

5. the second binding region includes a third sub-binding region and a fourth sub-binding region that are independently provided, the third sub-binding region being close to a first end of the first touch electrode, and the fourth sub-binding region being close to a second end of the first touch electrode; another portion of the first lead wire extends from the touch display area through the second bending area to a side of the third sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the fourth sub-binding area close to a second end of the first touch electrode; a portion of the fourth lead wire extends from the touch display area through the second bending area to a side of the third sub-binding area that is remote from a first end of the first touch electrode, and another portion of the fourth lead wire extends from the touch display area through the second bending area to a side of the fourth sub-binding area that is remote from a second end of the first touch electrode; 5. The touch display panel of claim 4.

6. the second binding region includes a fifth sub-binding region, a sixth sub-binding region, a seventh sub-binding region, and an eighth sub-binding region that are arranged in order in an extension direction of the first touch electrode and are independently provided, another portion of the first lead wire extends from the touch display area through the second bending area to a side of the fifth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the eighth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a first group of fourth lead wires, a second group of fourth lead wires, a third group of fourth lead wires, and a fourth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the first group extend from the touch display area through the second bending area to a side of the fifth sub-binding area away from the first end of the first touch electrode, and the fourth lead wires of the second group extend from the touch display area to the second bending area. a fourth lead wire of the third group extends from the touch display area through the second bending region to a side of the seventh sub-binding area close to a second end of the first touch electrode; and a fourth lead wire of the fourth group extends from the touch display area through the second bending region to a side of the eighth sub-binding area away from the second end of the first touch electrode.

5. The touch display panel of claim 4.

7. the first binding region is located in a central region of a peripheral region on a first end side of the second touch electrode, the first binding region is divided into a first region, a second region, a third region and a fourth region arranged in order in an extending direction of the first touch electrode, the first region is close to a first end of the first touch electrode, a portion of the first lead wire extends from the touch display area through the first bending area to the first area, and a portion of the third lead wire extends from the touch display area through the first bending area to the fourth area; a portion of the second lead wire extends from the touch display area through the first bending area to the second area, and another portion of the second lead wire extends from the touch display area through the first bending area to the third area; 4. The touch display panel of claim 3.

8. the second binding region includes a ninth sub-binding region, a tenth sub-binding region, an eleventh sub-binding region, and a twelfth sub-binding region that are arranged in order in an extension direction of the first touch electrode and are independently provided; another portion of the first lead wire extends from the touch display area through the second bending area to a side of the ninth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch display area through the second bending area to a side of the twelfth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a fifth group of fourth lead wires, a sixth group of fourth lead wires, a seventh group of fourth lead wires, and an eighth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the fifth group extend from the touch display area through the second bending area to a side of the ninth sub-binding area away from the first end of the first touch electrode, and the fourth lead wires of the sixth group extend from the touch display area to the second bending area. a fourth lead wire of the seventh group extends from the touch display area through the second bending region to a side of the tenth sub-binding area close to a first end of the first touch electrode, a fourth lead wire of the seventh group extends from the touch display area through the second bending region to a side of the eleventh sub-binding area close to a second end of the first touch electrode, and a fourth lead wire of the eighth group extends from the touch display area through the second bending region to a side of the twelfth sub-binding area away from the second end of the first touch electrode.

8. The touch display panel of claim 7.

9. the second binding region is located in a central region of a peripheral region on a second end side of the second touch electrode, and the second binding region is divided into a fifth region, a sixth region, a seventh region, and an eighth region arranged in order in an extending direction of the first touch electrode, and the fifth region is close to a first end of the first touch electrode; another portion of the first lead wire extends from the touch display area through the second bending area to the fifth area, and another portion of the third lead wire extends from the touch display area through the second bending area to the eighth area; a portion of the fourth lead wire extends from the touch display area through the second bending area to the sixth area, and another portion of the fourth lead wire extends from the touch display area through the second bending area to the seventh area; 8. The touch display panel of claim 7.

10. a gap between a first lead wire, which is closest to a first end of the second touch electrode and to which the first touch electrode is electrically connected, and a second lead wire, which is closest to the first end of the first touch electrode and to which the second touch electrode is electrically connected, is defined as a first gap, and the width of the first gap is 70 μm or more; a gap between a third lead wire electrically connected to the first touch electrode and closest to a first end of the second touch electrode, and a second lead wire electrically connected to the second touch electrode and closest to a second end of the first touch electrode, the second gap having a width of 70 μm or more; a gap between a first lead wire electrically connected to the first touch electrode and closest to a second end of the second touch electrode and a fourth lead wire electrically connected to the second touch electrode and closest to a first end of the first touch electrode, the third gap having a width of 70 μm or more; a fourth gap is defined as a gap between a third lead wire electrically connected to the first touch electrode and closest to the second end of the second touch electrode, and a fourth lead wire electrically connected to the second touch electrode and closest to the second end of the first touch electrode, and the width of the fourth gap is 70 μm or more; 10. The touch display panel according to any one of claims 3 to 9.

11. A first shielded wire that is grounded is provided in the first gap, a second shielded wire that is grounded is provided in the second gap, a third shielded wire that is grounded is provided in the third gap, and a fourth shielded wire that is grounded is provided in the fourth gap.

11. The touch display panel of claim 10.

12. a portion of the first lead wire extends across the first binding region in the first bending region, and another portion of the first lead wire extends across the second binding region in the second bending region; a portion of the third lead wire extends across the first binding region in the first bending region, and another portion of the third lead wire extends across the second binding region in the second bending region; the second lead wire crosses over to the first binding region in the first bending region, and the fourth lead wire crosses over to the second binding region in the second bending region; 12. The touch display panel according to claim 3.

13. the first bending region includes a plurality of first jumper wires arranged in order in an extension direction of the first touch electrode, and the second bending region includes a plurality of second jumper wires arranged in order in an extension direction of the first touch electrode; the number of second jumper wires extending to the second binding region and electrically connected to one touch lead wire is less than the number of first jumper wires extending to the first binding region and electrically connected to one touch lead wire; 13. The touch display panel of claim 12.

14. one of the first lead wires among the portion of the first lead wires is electrically connected to at least three corresponding first jumper wires, one of the third lead wires among the portion of the third lead wires is electrically connected to at least three corresponding first jumper wires, and one of the second lead wires is electrically connected to at least three corresponding first jumper wires; one of the other parts of the first lead wires is electrically connected to at least two corresponding second jumper wires, one of the other parts of the third lead wires is electrically connected to at least two corresponding second jumper wires, and one of the fourth lead wires is electrically connected to at least two corresponding second jumper wires; 14. The touch display panel of claim 13.

15. the first touch electrode has an integral structure, the second touch electrode comprises a plurality of sub-touch electrodes and a plurality of connecting portions spaced apart by a plurality of the first touch electrodes, the touch display panel further comprises a first insulating layer located between the sub-touch electrodes and the connecting portions, the connecting portions are close to the substrate, and each of two adjacent sub-touch electrodes is electrically connected to the connecting portions by a via hole penetrating the first insulating layer; the touch display panel comprises a first source-drain metal layer, a second insulating layer and a second source-drain metal layer sequentially stacked between the substrate and the connecting portion, the first source-drain metal layer being close to the substrate; a portion of the touch lead wire corresponding to a region other than the first bending region and a region other than the second bending region includes a first metallic wire and a second metallic wire that are electrically connected to each other, the first metallic wire being provided in the same layer as the connection portion, and the second metallic wire being provided in the same layer as the first touch electrode; a portion of the touch lead wire corresponding to the first bending region and the second bending region is a third metallic wire located in the second source-drain metal layer, and the first metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a second insulating layer between the second source-drain metal layer and the connection portion, or the second metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a third insulating layer between the second source-drain metal layer and the first touch electrode; 15. The touch display panel of claim 14.

16. the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are crossed vertically and horizontally, the first binding region and the second binding region are located at both ends of the extension direction of the second touch electrode, respectively; the peripheral region further includes a third binding region and a fourth binding region, the third binding region and the fourth binding region being located at both ends of the first touch electrode in an extending direction, and the peripheral region further includes a third bending region located between the third binding region and the touch display region, and a fourth bending region located between the fourth binding region and the touch display region; the plurality of touch lead wires include a first lead wire and a second lead wire, each of the first lead wires electrically connected to a first end of a corresponding one of the first touch electrodes, and the first lead wires extend from the touch display area through the third bending area adjacent thereto to the third binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch display area through the first bending area adjacent thereto to the first binding area.

10. The touch display panel of claim 1.

17. the plurality of touch lead wires further include a third lead wire and a fourth lead wire, each of the third lead wires electrically connected to a second end of a corresponding one of the first touch electrodes, and the third lead wire extends from the touch display area through the fourth bending area adjacent thereto to the fourth binding area; Each of the fourth lead wires is electrically connected to a second end of a corresponding one of the second touch electrodes, and the fourth lead wires extend from the touch display area through the adjacent second bending area to both ends of the second binding area.

17. The touch display panel of claim 16.

18. the first lead wire crosses over to the third binding region at the third bending region, the second lead wire crosses over to the first binding region at the first bending region, the third lead wire crosses over to the fourth binding region at the fourth bending region, and the fourth lead wire crosses over to the second binding region at the second bending region; 18. The touch display panel of claim 17.

19. the first bending region includes a plurality of first jumper wires arranged in order in an extension direction of the first touch electrode, the second bending region includes a plurality of second jumper wires arranged in order in the extension direction of the first touch electrode, the third bending region includes a plurality of third jumper wires arranged in order in the extension direction of the second touch electrode, and the fourth bending region includes a plurality of fourth jumper wires arranged in order in the extension direction of the second touch electrode; one of the first lead wires is electrically connected to at least two corresponding third jumper wires, one of the second lead wires is electrically connected to at least two corresponding first jumper wires, one of the third lead wires is electrically connected to at least two corresponding fourth jumper wires, and one of the fourth lead wires is electrically connected to at least two corresponding second jumper wires; 20. The touch display panel of claim 18.

20. the first touch electrode has an integral structure, the second touch electrode includes a plurality of sub-touch electrodes and a plurality of connecting portions spaced apart by a plurality of the first touch electrodes, the touch display panel further includes a first insulating layer located between the sub-touch electrodes and the connecting portions, the connecting portions are close to the substrate, and each of two adjacent sub-touch electrodes is electrically connected to the connecting portions by a via hole penetrating the first insulating layer; the touch display panel comprises a first source-drain metal layer, a second insulating layer and a second source-drain metal layer sequentially stacked between the substrate and the connecting portion, the first source-drain metal layer being close to the substrate; a portion of the touch lead wire corresponding to a region other than the first bending region, the second bending region, the third bending region, and the fourth bending region includes a first metallic wire and a second metallic wire that are electrically connected to each other, the first metallic wire being provided in the same layer as the connection portion, and the second metallic wire being provided in the same layer as the first touch electrode; a third metallic wire located in the second source-drain metal layer, and the first metallic wire and the third metallic wire are electrically connected by a via hole that penetrates a second insulating layer between the second source-drain metal layer and the connection portion; or a via hole that penetrates a third insulating layer between the second source-drain metal layer and the first touch electrode.

20. The touch display panel of claim 19.

21. A touch display panel according to any one of claims 1 to 20, and at least two flexible circuit boards located on the rear surface of the touch display panel, wherein each binding area of ​​the touch display panel has a plurality of first bonding pads, and the touch lead wires are electrically connected to the corresponding flexible circuit boards by the first bonding pads. Touch display device.

22. the first binding region includes a first sub-binding region and a second sub-binding region that are provided independently, and the second binding region includes a fifth sub-binding region, a sixth sub-binding region, a seventh sub-binding region, and an eighth sub-binding region that are arranged in order in an extending direction of the first touch electrode and that are provided independently, the at least two flexible circuit boards include a first flexible circuit board, a second flexible circuit board, a third flexible circuit board, a fourth flexible circuit board, a fifth flexible circuit board and a sixth flexible circuit board; the rear surface of the touch display panel further includes a printed circuit board, the printed circuit board is close to the second binding area and extends in the extension direction of the first touch electrode; a terminal at one end of the first flexible circuit board is bonded to a first bonding pad in the first sub-binding area, a terminal at one end of the second flexible circuit board is bonded to a first bonding pad in the second sub-binding area, and the other end of the first flexible circuit board and the other end of the second flexible circuit board are electrically connected to the printed circuit board at a location close to the eighth sub-binding area; a terminal at one end of the third flexible circuit board is bonded to a first bonding pad in the fifth sub-binding region, a terminal at one end of the fourth flexible circuit board is bonded to a first bonding pad in the sixth sub-binding region, a terminal at one end of the fifth flexible circuit board is bonded to a first bonding pad in the seventh sub-binding region, and a terminal at one end of the sixth flexible circuit board is bonded to a first bonding pad in the eighth sub-binding region; a terminal at the other end of the third flexible circuit board is bonded to the printed circuit board, a terminal at the other end of the fourth flexible circuit board is bonded to the printed circuit board, a terminal at the other end of the fifth flexible circuit board is bonded to the printed circuit board, and a terminal at the other end of the sixth flexible circuit board is bonded to the printed circuit board.

22. The touch display device of claim 21.

23. the printed circuit board comprises a first source driver chip, a second source driver chip, a third source driver chip, and a fourth source driver chip, the first source driver chip being located in a central region of the third flexible circuit board on a side remote from the first flexible circuit board, the second source driver chip being located in a central region of the fourth flexible circuit board on a side remote from the first flexible circuit board, the third source driver chip being located in a central region of the fifth flexible circuit board on a side remote from the first flexible circuit board, and the fourth source driver chip being located in a central region of the sixth flexible circuit board on a side remote from the first flexible circuit board; the printed circuit board further comprises a touch driver chip located at a corner thereof, the touch driver chip being close to the third flexible circuit board, and the touch driver chip transmitting touch signals to the first flexible circuit board, the second flexible circuit board, the third flexible circuit board, the fourth flexible circuit board, the fifth flexible circuit board and the sixth flexible circuit board through wiring on the printed circuit board; 23. The touch display device of claim 22.

24. The touch display device of any one of claims 21 to 23, further comprising an active pen.

25. A touch substrate comprising a touch area and a non-touch area surrounding the touch area, the non-touch area comprising a first binding area and a second binding area located on opposite sides of the touch area, a first bending area located between the first binding area and the touch area, and a second bending area located between the second binding area and the touch area, A substrate; a touch electrode layer provided on the substrate and located in the touch area, the touch electrode layer including a plurality of touch electrodes provided in the same layer and insulated from each other; a plurality of touch lead wires provided on the substrate, each of the touch lead wires being electrically connected to a corresponding one of the touch electrodes; a portion of the touch lead wire extends from the touch area through the first bend area to the first binding area, and another portion of the touch lead wire extends from the touch area through the second bend area to the second binding area; Touch board.

26. the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are crossed vertically and horizontally; the plurality of touch lead wires include a first lead wire and a second lead wire; the first binding region and the second binding region are located at both ends of the second touch electrode in an extending direction, respectively; each of the first wire leads is electrically connected to a first end of a corresponding one of the first touch electrodes, a portion of the first wire lead extends from the touch area through the first bend area to the first binding area, and another portion of the first wire lead extends from the touch area through the second bend area to the second binding area; Each of the second lead wires is electrically connected to a first end of a corresponding one of the second touch electrodes, and the second lead wires extend from the touch area through the adjacent first bend area to the first binding area.

26. The touch substrate of claim 25.

27. the plurality of touch lead wires further include a third lead wire and a fourth lead wire, each of the third lead wires electrically connected to a second end of a corresponding one of the first touch electrodes, a portion of the third lead wire extending from the touch area through the first bending area to the first binding area, and another portion of the third lead wire extending from the touch area through the second bending area to the second binding area; each fourth wire lead is electrically connected to a second end of a corresponding one of the second touch electrodes, and the fourth wire lead extends from the touch area through the second bending area adjacent thereto to the second binding area; 27. The touch substrate of claim 26.

28. the first binding region includes a first sub-binding region and a second sub-binding region that are independently provided, the first sub-binding region being close to a first end of the first touch electrode, and the second sub-binding region being close to a second end of the first touch electrode; a portion of the first lead wire extends from the touch area through the first bending area to a side of the first sub-binding area that is close to a first end of the first touch electrode, and a portion of the third lead wire extends from the touch area through the first bending area to a side of the second sub-binding area that is close to a second end of the first touch electrode; a portion of the second lead wire extends from the touch area through the first bending area to a side of the first sub-binding area that is remote from a first end of the first touch electrode, and another portion of the second lead wire extends from the touch area through the first bending area to a side of the second sub-binding area that is remote from a second end of the first touch electrode; 28. The touch substrate of claim 27.

29. the second binding region includes a fifth sub-binding region, a sixth sub-binding region, a seventh sub-binding region, and an eighth sub-binding region that are arranged in order in an extension direction of the first touch electrode and are independently provided, another portion of the first lead wire extends from the touch area through the second bending area to a side of the fifth sub-binding area close to a first end of the first touch electrode, and another portion of the third lead wire extends from the touch area through the second bending area to a side of the eighth sub-binding area close to a second end of the first touch electrode; The fourth lead wires are divided into a first group of fourth lead wires, a second group of fourth lead wires, a third group of fourth lead wires, and a fourth group of fourth lead wires in the extending direction of the first touch electrode, and the fourth lead wires of the first group extend from the touch area through the second bending area to a side of the fifth sub-binding area away from a first end of the first touch electrode, and the fourth lead wires of the second group extend from the touch area to the second bending area. a fourth lead wire of the third group extends from the touch area through the second bending region to a side of the seventh sub-binding region close to a second end of the first touch electrode, and a fourth lead wire of the fourth group extends from the touch area through the second bending region to a side of the eighth sub-binding region away from the second end of the first touch electrode; 29. The touch substrate of claim 28.

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