Touch Panel and Touch Display Device

Abstract

Embodiments of the present disclosure disclose a touch panel and a touch display device, relating to the field of display technologies, and improving the problem of poor linearity of scribed lines in the gap region of the touch panel. The touch panel includes a substrate, a plurality of first touch electrodes arranged along a first direction and connected in series on the substrate, and a plurality of second touch electrodes arranged along a second direction and connected in series. The first touch electrodes and the second touch electrodes are insulated from each other. The substrate has at least two mounting holes located in the touch area, and there is a gap region between two adjacent mounting holes. The first touch electrodes located in the gap region form a first gap electrode and a second gap electrode. The second touch electrodes located in the gap region form a third gap electrode and a fourth gap electrode. The third gap electrode is located between the first gap electrode and the second gap electrode. The above touch panel is applied to a touch display device to enable the touch display device to display a picture.

Description

Technical Field

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

[0002] With the continuous development of electronic products, touch display devices with touch and display functions can achieve simple and flexible human-computer interaction, and thus are widely used. The structure of the touch panel in a touch display device, for example, includes: a single glass type (One Glass Solution, OGS) touch panel, an on-cell touch panel, and an in-cell touch panel. Summary of the Invention

[0003] Some embodiments of the present disclosure aim to provide a touch panel and a touch display device, which increase the facing area between a first touch electrode and a second touch electrode, thereby increasing the mutual capacitance value between the first touch electrode and the second touch electrode, and improving the problem of poor linearity of the scribed lines in the gap region of the touch panel.

[0004] To achieve the above object, some embodiments of the present disclosure provide the following technical solutions:

[0005] On the one hand, a touch panel is provided, which has a touch area; the touch panel includes a substrate and a touch function layer disposed on the substrate. The touch function layer includes a plurality of first touch units extending along a first direction and a plurality of second touch units extending along a second direction; each first touch unit includes a plurality of first touch electrodes arranged along the first direction and connected in series with each other, and each second touch unit includes a plurality of second touch electrodes arranged along the second direction and connected in series with each other; the first touch electrodes and the second touch electrodes are insulated from each other. The first direction and the second direction intersect.

[0006] Wherein, the substrate has at least two mounting holes located in the touch area, and the touch function layer is hollowed out at the positions of the at least two mounting holes; there is a gap region between two adjacent mounting holes.

[0007] In the first touch units passing through the gap region, the first touch electrodes located in the gap region form a first gap electrode and a second gap electrode arranged along the first direction and electrically connected to each other. In the second touch units passing through the gap region, the second touch electrodes located in the gap region form a third gap electrode and a fourth gap electrode arranged along the second direction and electrically connected to each other. Along the first direction, the third gap electrode is located between the first gap electrode and the second gap electrode.

[0008] In the above embodiments of the present disclosure, when the distance between at least two mounting holes remains unchanged, a first gap electrode, a second gap electrode, a third gap electrode, and a fourth gap electrode are provided in the gap region. Along the first direction, the third gap electrode is located between the first gap electrode and the second gap electrode, such that both sides of the third gap electrode in the gap region are opposite to the first gap electrode and the second gap electrode, increasing the contour perimeter of the first touch electrode and the second touch electrode in this region, thereby increasing the facing area between the first touch electrode and the second touch electrode, and further increasing the mutual capacitance value between the first touch electrode and the second touch electrode, improving the problem of poor linearity of the scribed line in the gap region of the touch panel.

[0009] In some embodiments, the contour of the first gap electrode and / or the second gap electrode is at least partially different from the contour of the first touch electrode located outside the gap region. The contour of the third gap electrode and / or the fourth gap electrode is at least partially different from the contour of the second touch electrode located outside the gap region. The third gap electrode is embedded inside the whole electrode formed by the electrical connection of the first gap electrode and the second gap electrode.

[0010] In some embodiments, the mutual capacitance value between the first gap electrode and the second gap electrode, and the third gap electrode and the fourth gap electrode is C1; the mutual capacitance value between the first touch electrode and the second touch electrode located outside the gap region is C2; the ratio range of C1 to C2 is 0.75 to 0.8.

[0011] In some embodiments, the distance range between two adjacent mounting holes on both sides of the gap region is 900 μm to 1200 μm.

[0012] In some embodiments, the ratio range of the sum of the areas of the third gap electrode and the fourth gap electrode to the sum of the areas of the first gap electrode and the second gap electrode is 1.2 to 1.4.

[0013] In some embodiments, the ratio range of the area of the second touch electrode to the area of the first touch electrode in the non-gap region is 0.9 to 1.

[0014] In some embodiments, at least one edge of at least one of the third gap electrode and the fourth gap electrode has at least one branch, the edge is close to at least one of the first gap electrode and the second gap electrode, and the at least one branch extends into the gap electrode that the edge it is located on is close to.

[0015] In some embodiments, the edge of the branch is in a broken line shape.

[0016] In some embodiments, the mutually approaching contour shapes of the third gap electrode and the first gap electrode are complementary, and the mutually approaching contour shapes of the third gap electrode and the second gap electrode are complementary.

[0017] In some embodiments, the contour of the third gap electrode has protrusions of multiple shapes, and the multiple shapes of protrusions include at least two of a wavy protrusion, a rectangular protrusion, a trapezoidal protrusion, and a triangular protrusion.

[0018] The third gap electrode includes a first part, a second part, and a third part that are connected as a whole. Along the second direction and in the direction from the third gap electrode to the fourth gap electrode, the first part, the second part, and the third part are arranged in sequence. The average dimensions of the first part and the third part in the first direction are both smaller than the average dimension of the second part in the first direction.

[0019] In some embodiments, the contours of the first part close to the first gap electrode and close to the second gap electrode both have the wavy protrusions.

[0020] In some embodiments, two adjacent mounting holes located on both sides of the gap region are a first mounting hole and a second mounting hole respectively, and the first mounting hole and the second mounting hole are arranged in the first direction. The first gap electrode is adjacent to one side of the first mounting hole close to the gap region, and the second gap electrode is adjacent to one side of the second mounting hole close to the gap region.

[0021] Wherein, in the touch control area, the area around the first mounting hole and the second mounting hole and not in the gap region is the hole edge area. The area in the touch control area other than the gap region and the hole edge area is the normal area.

[0022] In some embodiments, the first touch electrode and the second touch electrode include a metal mesh structure. The line width of the metal mesh of at least one of the first gap electrode, the second gap electrode, the third gap electrode, and the fourth gap electrode is greater than the line width of the metal mesh of the touch electrode in the normal area.

[0023] In some embodiments, the line width of the metal mesh of at least one of the first gap electrode, the second gap electrode, the third gap electrode, and the fourth gap electrode ranges from 3.8 μm to 5.2 μm; the line width of the metal mesh of the touch electrode in the normal area ranges from 2.8 μm to 4.2 μm.

[0024] In some embodiments, the first gap electrode includes: a first main electrode, and a first compensation sub-electrode disposed near the first mounting hole; the first main electrode is a metal grid structure, the first compensation sub-electrode is a planar electrode, and the first main electrode is electrically connected to the first compensation sub-electrode; and / or, the second gap electrode includes: a second main electrode, and a second compensation sub-electrode disposed near the second mounting hole; the second main electrode is a metal grid structure, the second compensation sub-electrode is a planar electrode, and the second main electrode is electrically connected to the second compensation sub-electrode.

[0025] In some embodiments, the ratio of the sum of the areas of the third gap electrode and the fourth gap electrode to the sum of the area of the metal grid of the first main electrode, the area of the first compensation sub-electrode, the area of the metal grid of the second main electrode, and the area of the second compensation sub-electrode is less than 1.3 and greater than or equal to 1.

[0026] In some embodiments, among the touch units passing through the first mounting hole and the second mounting hole, each touch electrode located in the hole-edge region forms a hole-edge electrode. The hole-edge electrode includes: a main electrode, and a compensation sub-electrode disposed near the corresponding mounting hole; the main electrode is a metal grid structure, the compensation sub-electrode is a planar electrode, and the main electrode is electrically connected to the compensation sub-electrode.

[0027] In the second touch unit passing through the first mounting hole, two second touch electrodes located on both sides of the first mounting hole along the second direction respectively form a first hole-edge electrode and a second hole-edge electrode; the first hole-edge electrode, the third gap electrode, the fourth gap electrode, and the second hole-edge electrode are electrically connected in sequence. In the second touch unit passing through the second mounting hole, two second touch electrodes located on both sides of the second mounting hole along the second direction respectively form a third hole-edge electrode and a fourth hole-edge electrode; the third hole-edge electrode and the fourth hole-edge electrode are electrically connected by a first connection wire, and the first connection wire extends along the contour of the second mounting hole.

[0028] The whole formed by the electrical connection of the first hole-edge electrode, the third gap electrode, the fourth gap electrode, and the second hole-edge electrode is insulated from the whole formed by the electrical connection of the third hole-edge electrode, the fourth hole-edge electrode, and the first connection wire.

[0029] In some embodiments, in the first touch unit passing through the first mounting hole and the second mounting hole, a first touch electrode on a side of the first mounting hole away from the second mounting hole forms a fifth hole-edge electrode; a first touch electrode on a side of the second mounting hole away from the first mounting hole forms a sixth hole-edge electrode. The fifth hole-edge electrode is electrically connected to the first gap electrode through a second connecting wire, and the second connecting wire extends along the contour of the first mounting hole. The sixth hole-edge electrode is electrically connected to the second gap electrode through a third connecting wire, and the third connecting wire extends along the contour of the second mounting hole.

[0030] In some embodiments, each of the second touch units further includes a plurality of bridging structures. Along the second direction, every two adjacent second touch electrodes are electrically connected through one bridging structure. The third gap electrode and the fourth gap electrode are electrically connected through one bridging structure located in the gap region. In the second touch unit passing through the gap region, a line connecting the center of any bridging structure located outside the gap region and the center of the bridging structure for connecting the third gap electrode and the fourth gap electrode intersects with the second direction.

[0031] In some embodiments, the touch functional layer includes a touch electrode layer, an insulating layer, and a bridging structure layer stacked on the substrate. The insulating layer is located between the touch electrode layer and the bridging structure layer, and the bridging structure layer is located on a side of the touch electrode layer close to or away from the substrate. The first touch electrode and the second touch electrode are disposed in the touch electrode layer. Along the first direction, every two adjacent first touch electrodes are directly electrically connected. Along the second direction, every two adjacent second touch electrodes are independently disposed.

[0032] The insulating layer has a plurality of vias. The plurality of bridging structures included in each second touch unit are disposed in the bridging structure layer. Along the second direction, every two adjacent second touch electrodes pass through different vias and are respectively electrically connected to one bridging structure.

[0033] The bridging structure for connecting the third gap electrode and the fourth gap electrode is a gap bridging structure. The third gap electrode and the fourth gap electrode pass through different vias in the insulating layer and are respectively electrically connected to the gap bridging structure.

[0034] In some embodiments, the gap bridging structure has a hollowed-out portion. A positive projection of the conductive pattern for directly electrically connecting the first gap electrode and the second gap electrode on the substrate at least partially overlaps with a positive projection of the hollowed-out portion of the gap bridging structure on the substrate.

[0035] In some embodiments, the touch electrode layer includes a third hole-edge electrode, a fourth hole-edge electrode, a fifth hole-edge electrode, and a sixth hole-edge electrode. When the third hole-edge electrode and the fourth hole-edge electrode are electrically connected through a first connection wire, the fifth hole-edge electrode and the first gap electrode are electrically connected through a second connection wire, and the sixth hole-edge electrode and the second gap electrode are electrically connected through a third connection wire:

[0036] The first connection wire is disposed in the bridging structure layer, and the first connection wire passes through different vias in the insulating layer and is electrically connected to the third hole-edge electrode and the fourth hole-edge electrode respectively; the second connection wire is disposed in the touch electrode layer, and the second connection wire is directly electrically connected to the fifth hole-edge electrode and the first gap electrode. The third connection wire is disposed in the touch electrode layer, and the third connection wire is directly electrically connected to the sixth hole-edge electrode and the second gap electrode.

[0037] In some embodiments, the touch function layer further includes: a light-blocking portion, at least one connection wire, a first signal shielding portion, and electrode wires, which are sequentially arranged around the mounting hole along the radial direction of the mounting hole and in the direction from the center of the mounting hole to the edge; the light-blocking portion, the connection wire, the first signal shielding portion, and the electrode wires all extend along the contour of the mounting hole.

[0038] Among them, the light-blocking portion extends along the edge of the mounting hole to form a closed-loop structure, and the light-blocking portion is configured to block the light passing through the mounting hole from entering the area around the mounting hole. The connection wire is configured to electrically connect two adjacent first touch electrodes arranged along the first direction, or electrically connect two adjacent second touch electrodes arranged along the second direction. The electrode wire is configured to electrically connect the edge of the first touch electrode or the second touch electrode close to the mounting hole. The first signal shielding portion is at least disposed between adjacent connection wires and electrode wires, and the first signal shielding portion is configured to prevent crosstalk between the electrical signals transmitted on the adjacent connection wires and electrode wires.

[0039] In some embodiments, multiple connection wires are disposed between the light-blocking portion and the first signal shielding portion, and a second signal shielding portion is disposed between adjacent two of the connection wires; the second signal shielding portion extends along the contour of the mounting hole. The second signal shielding portion is configured to prevent crosstalk between the electrical signals transmitted on adjacent two of the connection wires.

[0040] On the other hand, a touch display device is provided, including the touch panel as described in any one of the above embodiments.

[0041] The beneficial effects achieved by the touch display device provided in the embodiments of the present disclosure are the same as those achieved by the touch panel described in any of the above embodiments, and will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] To more clearly illustrate the technical solutions in the present disclosure, the drawings required for use in some embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure, and those of ordinary skill in the art can also obtain other drawings based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limitations on the actual sizes of the products, the actual processes of the methods, the actual timings of the signals, etc. involved in the embodiments of the present disclosure.

[0043] Figure 1 Top view of a touch panel according to some embodiments;

[0044] Figure 2 is Figure 1 A partial enlarged view of the area shown by the dashed box C' in

[0045] Figure 3 Cross-sectional view of a touch panel according to some embodiments along Figure 2 the section line AA' in

[0046] Figure 4 Top view of a touch electrode layer in a touch function layer according to some embodiments;

[0047] Figure 5 Top view of a bridging structure layer in a touch function layer according to some embodiments;

[0048] Figure 6 is in Figure 1 Another partial enlarged view of the area shown by the dashed box C' in

[0049] Figure 7 Cross-sectional view of a touch panel according to some embodiments along Figure 6 the section line BB' in

[0050] Figure 8 Another top view of a touch electrode layer in a touch function layer according to some embodiments;

[0051] Figure 9 Another top view of a bridging structure layer in a touch function layer according to some embodiments;

[0052] Figure 10 Partial enlarged view of the hole edge area and the gap area of a touch panel according to some embodiments;

[0053] Figure 11A Structural diagram of branches on the fourth gap electrode according to some embodiments;

[0054] Figure 11B Structural diagram of branches on the fourth gap electrode according to some embodiments;

[0055] Figure 12 Is Figure 9 Structural diagram of the metal grid of the touch electrode in the area shown by the dashed box F in ;

[0056] Figure 13A Structural diagram of the metal grid of the touch electrode in the gap area according to some embodiments;

[0057] Figure 13B Structural diagram of the first part of the third gap electrode in the gap area according to some embodiments;

[0058] Figure 14A Simplified top view of the hole edge area and the gap area of the touch panel according to some embodiments;

[0059] Figure 14B Specific top view of the hole edge area and the gap area of the touch panel according to some embodiments;

[0060] Figure 15 Is Figure 14B Partial enlarged view of the metal grid structure in the area shown by the dashed box E1 in ;

[0061] Figure 16 Structural diagram of the compensation sub - electrode in the gap area of the touch panel according to some embodiments;

[0062] Figure 17 Is Figure 14B Partial enlarged view of the area shown by the dashed box E2 in ;

[0063] Figure 18 Is Figure 14B Partial enlarged view of the area shown by the dashed box E3 in ;

[0064] Figure 19 Structural diagram of the metal grid of the touch electrode in the gap area of the touch panel according to some embodiments;

[0065] Figure 20 Structural diagram of the gap bridging structure in the bridging structure layer in the gap area of the touch panel according to some embodiments;

[0066] Figure 21 Structural diagram of a hole edge area of the touch panel according to some embodiments;

[0067] Figure 22Another structural diagram of the hole edge area of a touch panel according to some embodiments;

[0068] Figures 23A - 23D Structural diagrams of the light shielding rings of a touch panel according to some embodiments;

[0069] Figure 24 A cross-sectional view of a touch display device according to some embodiments;

[0070] Figure 25 Another cross-sectional view of a touch display device according to some embodiments;

[0071] Figure 26A A simplified top view of the gap area of a touch panel in the related art;

[0072] Figure 26B A specific top view of the gap area of a touch panel in the related art. Detailed implementation manners

[0073] Next, the technical solutions in some embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0074] Unless otherwise required by the context, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular form "comprises" and the present participle form "comprising", are interpreted as open and inclusive meanings, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example", or "some examples", etc. are intended to indicate that specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0075] Hereinafter, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0076] When describing some embodiments, the expressions "electrically connected" and "connected" and their derivatives may be used. For example, when describing some embodiments, the term "point connection" may be used to indicate that two or more components have direct physical contact or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content herein.

[0077] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0078] The use of "configured to" herein means open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps.

[0079] In addition, the use of "based on" means open and inclusive, because a process, step, calculation, or other action "based on" one or more of the stated conditions or values may, in practice, be based on additional conditions or values beyond those stated.

[0080] As used herein, "about" or "substantially" includes the stated value and an average within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by one of ordinary skill in the art in view of the measurement being discussed and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system).

[0081] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions is exaggerated for clarity. Thus, variations in the shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are contemplated. Accordingly, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but include shape deviations resulting from, for example, manufacturing. For example, an etched region shown as rectangular will typically have curved features. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shape of the regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0082] With the rapid development of AMOLED (Active Matrix Organic Light-Emitting Diode) display devices, full-screen, narrow bezel, high resolution, rollable / wearable, foldable, etc. have become important development directions for future AMOLEDs.

[0083] Among them, the technology of fabricating a touch structure (Flexible Metal Layer On Cell, FMLOC) directly on the encapsulation layer of an OLED (Organic Light-Emitting Diode) display panel can prepare a lighter and thinner touch panel, and this technology can be applied to foldable and rollable OLED display devices.

[0084] Meanwhile, in order to effectively utilize the screen space and increase the screen-to-body ratio (i.e., the ratio of the area of the display region actually used for displaying images to the area of the entire front surface of the display panel), functional devices such as cameras are placed in the OLED display panel through a hole-punching technology, and this technology is called AA Hole (Active Area Hole) technology.

[0085] As Figure 26A and Figure 26B shown, the touch panel 100' generally includes a plurality of touch electrodes (including a first touch electrode 11' and a second touch electrode 21') evenly distributed. Mutual capacitance can be generated between adjacent different touch electrodes (i.e., between the first touch electrode 11' and the second touch electrode 21'). After these touch electrodes are touched, the mutual capacitance value will change. Thus, by detecting the mutual capacitance value and determining the change amount of the mutual capacitance value, the touch position can be judged.

[0086] The inventors of the present disclosure found that when drilling holes inside an OLED display panel integrated with a touch structure (such as Figure 26A and Figure 26BThe technical solution of the installation holes H') shown will damage the integrity of the touch electrodes of the touch structure at the punching positions in the OLED display panel. Especially when two installation holes H' are provided in the OLED display panel, the distance M' between the two installation holes H' ranges from 900 μm to 1200 μm. Exemplarily, the distance M' between the two installation holes H' ranges from 1000 μm to 1100 μm. For example, the distance M' is 1000 μm, 1050 μm, 1071 μm, 1071.8 μm, 1072 μm, 1090 μm or 1100 μm. Since the distance M' between the two installation holes H' is relatively close, the integrity of the touch electrodes in the gap region G' between the two installation holes H' cannot be guaranteed, resulting in the contour perimeter of the touch electrodes in the gap region G' being smaller than that of the touch electrodes in the normal region. Furthermore, the facing area of the touch electrodes in the gap region G' is smaller than that of the touch electrodes in the normal region, causing a large difference in the mutual capacitance values generated by the touch electrodes in the gap region G' and the touch electrodes in the normal region after being touched. When a finger draws a line on the touch panel 100' passing through the gap region G' between the two installation holes H', due to the smaller mutual capacitance value of the touch electrodes in the gap region G', the drawn line may jitter, such as bend or even break, in the gap region G', resulting in poor linearity of the line drawn on the touch panel 100'.

[0087] Based on this, as Figure 1 shown, some embodiments of the present disclosure provide a touch panel 100. The touch panel 100 has a touch area T; the touch panel 100 may also have a border area B located around the touch area T.

[0088] The touch panel 100 can be superimposed on the display panel to form a touch display device. Installation holes can be provided in the display panel to install functional devices such as cameras. In this case, the touch area T of the touch panel 100 overlaps with the display area AA (also known as the active display area, with the English name Active Area) in the display panel. The touch area T has at least two installation holes H, and the at least two installation holes H correspond to the installation holes in the display panel for installing functional devices such as cameras.

[0089] In the description herein, the area between two adjacent installation holes H among the at least two installation holes H can be referred to as the gap region G (refer to the dotted-filled area between the two installation holes H shown in Figure 1 ). The area around the installation hole H can be referred to as the hole edge region KB (as shown in Figure 1The areas filled with grids around the mounting holes H1 and H2 shown in [Figure X], it should be noted that the hole-edge area KB described in this article does not include the area located around the mounting hole H and belonging to the gap area G, but includes the area located around the mounting hole H and not belonging to the gap area G. In the touch area T, the area other than the above-mentioned gap area G and hole-edge area KB can be called the normal area C.

[0090] In some embodiments, as Figure 1 shown, the distance M between two adjacent mounting holes H on both sides of the gap area G ranges from 900 μm to 1200 μm; that is, the size of the gap area G along the first direction X (i.e., the arrangement direction of two adjacent mounting holes H) ranges from 900 μm to 1200 μm.

[0091] Exemplarily, the distance M between two adjacent mounting holes H on both sides of the gap area G ranges from 1000 μm to 1100 μm. For example, the distance M is 1000 μm, 1050 μm, 1071 μm, 1071.8 μm, 1072 μm, 1090 μm or 1100 μm.

[0092] It should be noted that Figure 1 only takes the touch area T having two mounting holes H as an example for illustration. However, in the embodiments of the present disclosure, the number of mounting holes provided in the touch area T can be three or more, and it can be set according to specific situations.

[0093] Figure 1 The set positions, sizes and shapes of the mounting holes H shown in [Figure X] are only for illustration. Those skilled in the art should understand that the specific set positions, sizes and shapes of the mounting holes H in the embodiments of the present disclosure are not limited thereto, and they can be adjusted accordingly according to the positions, sizes and shapes of functional devices such as cameras.

[0094] Figure 1 The relative sizes of the touch area T and the border area B shown in [Figure X] are only for illustration and are not specifically limited herein. In some embodiments, when the touch panel 100 is applied to a full-screen display device, the touch panel 100 may not be provided with a border area B.

[0095] In some embodiments, please refer to Figure 2 and Figure 3 , Figure 2 shows Figure 1 the top view structure of the touch electrodes in the partial area C' of the normal area C of the touch panel 100 in [Figure X], Figure 3 shows Figure 2 the cross-sectional structure of the touch panel 100 along the section line AA' in [Figure X]. The touch panel 100 includes a substrate 1 and a touch functional layer 2 provided on the substrate 1.

[0096] As shown Figure 2 in the figure, the touch function layer 2 includes a plurality of first touch units 10 extending along a first direction X and a plurality of second touch units 20 extending along a second direction Y. Each first touch unit 10 includes a plurality of first touch electrodes 11 arranged along the first direction X and connected in series with each other. Each second touch unit 20 includes a plurality of second touch electrodes 21 arranged along the second direction Y and connected in series with each other. Along the first direction X, every two adjacent first touch electrodes 11 are directly electrically connected. Each second touch unit 20 further includes a plurality of bridging structures (for example, Figure 2 the first bridging structure 21A shown). Along the second direction Y, every two adjacent second touch electrodes 21 are electrically connected through a bridging structure, so that the first touch electrodes 11 and the second touch electrodes 21 are insulated from each other.

[0097] Among them, the first direction X and the second direction Y are arranged crosswise. For example, the first direction X and the second direction Y can be perpendicular to each other. For example, the first direction X can be the horizontal direction of the touch display device, and the second direction Y can be the vertical direction of the touch display device; or, the first direction X can be the row direction of the pixel arrangement of the touch display device, and the second direction Y can be the column direction of the pixel arrangement of the touch display device.

[0098] It should be noted that in the multiple drawings of the present disclosure, only the case where the first direction X is the horizontal direction and the second direction Y is the vertical direction is taken as an example for illustration. In the present disclosure, the technical solutions obtained by rotating the drawings by 90 degrees are also within the protection scope of the present disclosure.

[0099] Figure 2 The shapes of the first touch electrodes 11 and the second touch electrodes 21 shown in

[0100] are rhombus or approximately rhombus. Among them, "approximately rhombus" means that the shape of the touch electrodes (that is, the first touch electrodes 11 and the second touch electrodes 21) is generally rhombus-shaped, but is not limited to a standard rhombus. For example, the boundary of the touch electrodes is allowed to be non-linear (such as serrated). Another example is that in the following embodiments, the shape of the touch electrodes involved is generally rhombus-shaped, but its boundary is serrated.

[0100] And, in the embodiments of the present disclosure, the electrode pattern shapes of the first touch electrodes 11 and the second touch electrodes 21 are not limited to rhombus or approximately rhombus. For example, they can also be rectangular, strip-shaped, etc.

[0101] Figure 10 shows Figure 1The partial enlarged structure of the gap region G and the hole edge region KB of the touch panel 100 in [description]. Among the first touch units 10 passing through the gap region G, the first touch electrodes 11 located in the gap region G form a first gap electrode 111 and a second gap electrode 112 that are arranged along the first direction X and are electrically connected to each other; among the second touch units 20 passing through the gap region G, the second touch electrodes 21 located in the gap region G form a third gap electrode 211 and a fourth gap electrode 212 that are arranged along the second direction Y and are electrically connected to each other. Among them, along the first direction X, the third gap electrode 211 is located between the first gap electrode 111 and the second gap electrode 112. In this way, both sides of the third gap electrode 211 are opposite to the first gap electrode 111 and the second gap electrode 112, so mutual capacitance can be generated on both sides.

[0102] Compared with Figure 26A and Figure 26B In the touch panel 100 provided by the above embodiments of the present disclosure, with the distance S between the two mounting holes H remaining unchanged, the first gap electrode 111, the second gap electrode 112, the third gap electrode 211, and the fourth gap electrode 212 are arranged through the gap region G. Along the first direction X, the third gap electrode 211 is located between the first gap electrode 111 and the second gap electrode 112, so that both sides of the third gap electrode 211 in the gap region G are opposite to the first gap electrode 111 and the second gap electrode 112, increasing the contour perimeters of the first touch electrode 11 and the second touch electrode 21 in this region, and thus increasing the facing area between the first touch electrode 11 and the second touch electrode 21.

[0103] It can be seen that by adopting the above-described electrode arrangement structure in the gap region G, the contour perimeters of the first touch electrode 11 and the second touch electrode 21 in this region are increased, thereby increasing the facing area between the first touch electrode 11 and the second touch electrode 21, and further increasing the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21, improving the problem of poor linearity of the scribed line in the gap region G of the touch panel 100.

[0104] Compared with Figure 26A and Figure 26B In the shown electrode arrangement structure, the contour perimeters of the first touch electrode 11 and the second touch electrode 21 are increased by 32% - 36%, for example, increased by 32%, 33%, 34%, 35%, or 36%.

[0105] In the gap region G', the facing area between the first touch electrode 11' and the second touch electrode 21' is S'. In the above electrode arrangement structure of the present disclosure, in the gap region G, the facing area between the first gap electrode 111 and the second gap electrode 112, and the third gap electrode 211 and the fourth gap electrode 212, that is, the facing area S between the first touch electrode 11 and the second touch electrode 21, has S > S', and the ratio range of S to S' is 1.1 to 1.5, for example, it can be 1.1, 1.2, 1.3, 1.4 or 1.5.

[0106] In the gap region G', the ratio range of the mutual capacitance value between the first touch electrode 11' and the second touch electrode 21' to the mutual capacitance value between the first touch electrode 11' and the second touch electrode 21' located in the non-gap region is 0.35 to 0.4. In the above electrode arrangement structure of the present disclosure, the mutual capacitance value between the first gap electrode 111 and the second gap electrode 112, and the third gap electrode 211 and the fourth gap electrode 212 is C1. The mutual capacitance value between the first touch electrode 11 and the second touch electrode 21 located in the non-gap region is C2, and the ratio range of C1 to C2 is 0.75 to 0.8, for example, 0.75, 0.76, 0.77, 0.79 or 0.8. It can be seen that compared with Figure 26A and Figure 26B the electrode arrangement structure shown, in the above electrode arrangement structure of the present disclosure, the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21 in the gap region increases, and is closer to the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21 in the non-gap region, thereby improving the problem of poor linearity of the scribing that occurs in the gap region G of the touch panel 100.

[0107] In some embodiments, the ratio range of the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212 to the sum of the areas of the first gap electrode 111 and the second gap electrode 112 is 1.2 to 1.4, for example, it can be 1.2, 1.24, 1.3, 1.36 or 1.4.

[0108] By adjusting the ratio relationship between the sum of the areas of the first gap electrode 111 and the second gap electrode 112 and the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212, compared with the related art, the area of the first touch electrode 11 in the gap region G increases, and the area of the second touch electrode 21 decreases, achieving the effect of reducing the difference between the sum of the areas of the first gap electrode 111 and the second gap electrode 112 and the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212, which is beneficial to increasing the facing area between the first touch electrode 11 and the second touch electrode 21 in the gap region G.

[0109] Exemplarily, asFigure 10 As shown, the ratio of the sum of the areas of the first gap electrode 111 and the second gap electrode 112 to the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212 is 1.2. That is, the sum of the areas of the first gap electrode 111 and the second gap electrode 112 is close to the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212.

[0110] By making the sum of the areas of the first gap electrode 111 and the second gap electrode 112 close to the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212, the areas of the first touch electrode 11 and the second touch electrode 21 in the gap region G are made close to each other, which is beneficial to further increase the facing area between the first touch electrode 11 and the second touch electrode 21.

[0111] In some embodiments, the ratio range of the area of the second touch electrode 21 to the area of the first touch electrode 11 in the non-gap region is 0.9 to 1, such as 0.9, 0.92, 0.95, 0.98 or 1. That is, in the non-gap region, the area of the second touch electrode 21 is close to, approximately equal to, or equal to the area of the first touch electrode 11.

[0112] In some embodiments, as Figure 10 shown, the two adjacent mounting holes H on both sides of the gap region G are the first mounting hole H1 and the second mounting hole H2 respectively, and the first mounting hole H1 and the second mounting hole H2 are arranged along the first direction X. The first gap electrode 111 is adjacent to the side of the first mounting hole H1 close to the gap region G, and the second gap electrode 112 is adjacent to the side of the second mounting hole H2 close to the gap region G.

[0113] In some embodiments, as Figure 10 shown, the first gap electrode 111 and the second gap electrode 112 are electrically connected to form an integral electrode, and the third gap electrode 211 is embedded inside the integral electrode formed by the electrical connection of the first gap electrode 111 and the second gap electrode 112, which can further increase the contour perimeter of the first touch electrode 11 and the second touch electrode 21 in the gap region G, thereby increasing the facing area between the first touch electrode 11 and the second touch electrode 21.

[0114] In some embodiments, as Figure 10As shown, the mutually approaching contour shapes of the third gap electrode 211 and the first gap electrode 111 are complementary, and the mutually approaching contour shapes of the third gap electrode 211 and the second gap electrode 112 are complementary, which can further increase the facing area between the first gap electrode 111 and the second gap electrode 112, and the third gap electrode 211 and the fourth gap electrode 212, thereby increasing the facing area between the first touch electrode 11 and the second touch electrode 21, and further increasing the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21. For example, compared with the related art, the mutual capacitance value in the present disclosure can be increased by 60

[0115] % to 170%, such as increased by 60%, 80%, 100%, 115%, 130%, 160% or 170%.

[0116] In some embodiments, the contour of the first gap electrode 111 and / or the second gap electrode 112 is at least partially different from the contour of the first touch electrode 11 located in the non-gap region.

[0117] Exemplarily, Figure 10 shows that the contours of the first gap electrode 111 and the second gap electrode 112 are at least partially different from the contour of the first touch electrode 11 located in the non-gap region. For example, the contours of the first gap electrode 111 and the second gap electrode 112 both have protrusions in shapes such as wavy and rectangular, while the contour of the first touch electrode 11 located in the non-gap region has a stepped protrusion.

[0118] In some embodiments, as Figure 10 shown, the average size of the first gap electrode 111 along the second direction Y gradually decreases along the first direction X; and / or the average size of the second gap electrode 112 along the second direction Y gradually decreases along the direction opposite to the first direction X.

[0119] In some embodiments, the contour of the third gap electrode 211 and / or the fourth gap electrode 212 is at least partially different from the contour of the second touch electrode 21 located in the non-gap region.

[0120] Exemplarily, Figure 10 shows that the contours of the third gap electrode 211 and the fourth gap electrode 212 are at least partially different from the contour of the second touch electrode 21 located in the non-gap region. For example, the contour of the third gap electrode 211 has protrusions in various shapes, and the various shapes of protrusions include at least two of wavy protrusions, rectangular protrusions, trapezoidal protrusions, and triangular protrusions; the contour of the fourth gap electrode 212 has protrusions in shapes such as wavy and rectangular, while the contour of the second touch electrode 21 located in the non-gap region has a stepped protrusion.

[0121] Exemplarily, the height range of the protrusion of the contour of the third gap electrode 211 is 280 μm to 400 μm, such as 280 μm, 300 μm, 320 μm, 350 μm, 360 μm or 390 μm, 400 μm; the width range of the protrusion of the contour of the third gap electrode 211 is 260 μm to 300 μm, such as 260 μm, 270 μm, 280 μm, 290 μm or 300 μm.

[0122] In some embodiments, as Figure 13A shown, the third gap electrode 211 includes a first part 211A, a second part 211B, and a third part 211C that are connected as a whole. Along the second direction Y, and in the direction from the third gap electrode 211 to the fourth gap electrode 212, the first part 211A, the second part 211B, and the third part 211C are arranged in sequence. The average dimensions of the first part 211A and the third part 211C along the first direction X are both smaller than the average dimension of the second part 211B along the first direction X.

[0123] That is, along the second direction Y, and in the direction from the third gap electrode 211 to the fourth gap electrode 212, the dimension of the third gap electrode 211 along the first direction X generally shows a trend of first decreasing, then increasing, and then decreasing again. The decrease-to-increase in dimension is beneficial for increasing the contour perimeter of the third gap electrode 211, and the increase-to-decrease in dimension is beneficial for bridging with the fourth gap electrode 212.

[0124] Exemplarily, as Figure 13B shown, the contours of the first part 211A near the first gap electrode 111 and near the second gap electrode 112 both have wavy protrusions. Among them, the wavy protrusions include a plurality of triangular protrusions. For example, the plurality of triangular protrusions include: a first protrusion 211A1, a second protrusion 211A2, and a third protrusion 211A3 arranged in sequence along the second direction Y and in the direction from the third gap electrode 211 to the fourth gap electrode 212. The height range of the plurality of triangular protrusions along the first direction X is 89.3 μm to 91.2 μm, such as 89.3 μm, 90.7 μm, 91.0 μm or 91.2 μm, etc.; the length range of the base of the plurality of triangular protrusions along the second direction Y is 180.0 μm to 206.9 μm, such as 180.0 μm, 192.0 μm, 200.7 μm, 202.8 μm or 206.9 μm, etc.

[0125] In some embodiments, as Figure 10 shown, the average dimension of the fourth gap electrode 212 along the first direction X first decreases and then increases along the second direction Y.

[0126] In some embodiments, as Figure 11A and Figure 11BAs shown, at least one branch S is provided at the edge of at least one of the third gap electrode 211 and the fourth gap electrode 212. The edge is close to at least one of the first gap electrode 111 and the second gap electrode 112. The at least one branch S extends into the gap electrode that the edge it is located at is close to, that is, the branch S extends into the first gap electrode 111 and / or the second gap electrode 112.

[0127] Through the above arrangement, the facing area between the first gap electrode 111, the second gap electrode 112, the third gap electrode 211 and the fourth gap electrode 212 can be increased, so that the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21 in the gap region G is further increased, further improving the problem of poor linearity of the scribing that occurs in the gap region G of the touch panel 100.

[0128] Exemplarily, at least one branch S is provided at the edge of the third gap electrode 211 close to the first gap electrode 111, and the at least one branch S extends into the first gap electrode 111. As Figure 11A shown, one branch S is provided at the edge of the third gap electrode 211 close to the first gap electrode 111; in other embodiments, two or more branches S may also be provided at the edge of the third gap electrode 211 close to the first gap electrode 111.

[0129] Exemplarily, at least one branch S is provided at the edge of the third gap electrode 211 close to the second gap electrode 112, and the at least one branch S extends into the second gap electrode 112. As Figure 11A shown, one branch S is provided at the edge of the third gap electrode 211 close to the second gap electrode 112; in other embodiments, two or more branches S may also be provided at the edge of the third gap electrode 211 close to the second gap electrode 112.

[0130] Branches S may be provided at both the edge of the third gap electrode 211 close to the first gap electrode 111 and the edge of the third gap electrode 211 close to the second gap electrode 112, or branches S may be provided at only one of them.

[0131] As Figure 11A shown, when branches S are provided at both the edge of the third gap electrode 211 close to the first gap electrode 111 and the edge of the third gap electrode 211 close to the second gap electrode 112, the number of branches S provided at the edge of the third gap electrode 211 close to the first gap electrode 111 and the edge of the third gap electrode 211 close to the second gap electrode 112 may be equal; and, further, these branches S may be symmetrically arranged with respect to the bisector of the third gap electrode 211 along the second direction Y, which is beneficial to improving the accuracy of touch position detection.

[0132] As Figure 11BAs shown, a branch S is provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111, and this branch S extends into the first gap electrode 111; a branch S is provided at the edge of the fourth gap electrode 212 close to the second gap electrode 112, and this branch S extends into the second gap electrode 112.

[0133] Exemplarily, at least one branch S is provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111, and this at least one branch S extends into the first gap electrode 111. As Figure 11B shown, a branch S is provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111; in other embodiments, two or more branches S may also be provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111.

[0134] Exemplarily, at least one branch S is provided at the edge of the fourth gap electrode 212 close to the second gap electrode 112, and this at least one branch S extends into the second gap electrode 112. As Figure 11B shown, a branch S is provided at the edge of the fourth gap electrode 212 close to the second gap electrode 112; in other embodiments, two or more branches S may also be provided at the edge of the fourth gap electrode 212 close to the second gap electrode 112.

[0135] Branches S may be provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111 and at the edge of the third gap electrode 211 close to the second gap electrode 112, or only one of them may be provided with a branch S.

[0136] As Figure 11B shown, when at least one branch S is provided at the edges of the fourth gap electrode 212 close to both the first gap electrode 111 and the second gap electrode 112, the number of branches S provided at the edge of the fourth gap electrode 212 close to the first gap electrode 111 and at the edge of the fourth gap electrode 212 close to the second gap electrode 112 may be equal; and, further, these branches S may be symmetrically arranged with respect to the bisector of the second direction Y of the fourth gap electrode 212, which is beneficial to improving the accuracy of touch position detection.

[0137] In some embodiments, as Figure 11A and Figure 11B shown, the edges of the branches S provided in the third gap electrode 211 and the fourth gap electrode 212 may be zigzag. The zigzag branches S can further increase the facing area between adjacent gap electrodes, so that the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21 in the gap region G is further increased, and the linearity of the scribed line in the gap region G of the touch panel 100 is improved.

[0138] It should be noted thatFigure 11A and Figure 11B The shapes and positions of the branches S of the third gap electrode 211 and the fourth gap electrode 212 shown in Figure 11B are only for illustration, and the present text does not specifically limit the shapes and positions of the branches S. The branches S can be arranged at any position on the edges of the third gap electrode 211 and the fourth gap electrode 212 close to the first gap electrode 111 and the second gap electrode 112, as long as the facing area between adjacent gap electrodes can be increased.

[0139] In some embodiments, in the touch panel 100, the touch electrodes adopt a metal mesh structure. Compared with using ITO (Indium Tin Oxide) to form a planar electrode as the touch electrode, the touch electrodes with a metal mesh structure have a small resistance and high sensitivity, which can improve the touch sensitivity of the touch panel 100. Moreover, the touch electrodes with a metal mesh structure have high mechanical strength and can reduce the weight of the touch panel 100. When the touch panel 100 is applied to a display device, the thin and light of the display device can be realized.

[0140] It should be noted that the above-mentioned touch electrodes with a metal mesh structure include each first touch electrode 11 and each second touch electrode 21 in the touch panel 100. Among them, the first touch electrode 11 includes the first touch electrode 11 in the normal area C, the first touch electrode 11 used to form the first gap electrode 111 and the second gap electrode 112 in the gap area G, and the first touch electrode 11 used to form the hole-edge electrode in the hole-edge area KB. The second touch electrode 21 includes the second touch electrode 21 in the normal area C, the second touch electrode 21 used to form the third gap electrode 211 and the fourth gap electrode 212 in the gap area G, and the second touch electrode 21 used to form the hole-edge electrode in the hole-edge area KB.

[0141] In some embodiments, as Figure 12 shown, the first touch electrode 11 and the second touch electrode 21 adopt a metal mesh structure. The metal meshes WD of the first touch electrode 11 and the second touch electrode 21 are arranged in the touch electrode layer 2A, and the metal mesh WD of the first touch electrode 11 is disconnected from the metal mesh WD of the second touch electrode 21, so that the first touch electrode 11 and the second touch electrode 21 are insulated from each other.

[0142] It should be noted that Figure 12 different pattern fillings are made for the metal meshes WD in Figure 12 to distinguish different touch electrodes. The metal meshes WD of the first touch electrode 11 and the second touch electrode 21 can adopt the same material and be formed by the same process.

[0143] As Figure 13AAs shown, in the gap region G, the first gap electrode 111, the second gap electrode 112, the third gap electrode 211, and the fourth gap electrode 212 adopt a metal mesh structure. In some embodiments, the line width of the metal mesh WD in the gap region G can be made greater than the line width of the metal mesh WD in the normal region C, so as to be able to compensate for the electrode areas of the first touch electrode 11 and the second touch electrode 21 located in the gap region G, increase the areas of the electrodes that transmit touch signals in the first touch electrode 11 and the second touch electrode 21 in the gap region G, and increase the mutual capacitance value between the first touch electrode 11 and the second touch electrode 21, thereby further improving the problem of poor linearity of the scribed lines that occur in the gap region G of the touch panel 100.

[0144] It should be noted that when the line width of the metal mesh WD in the gap region G is greater than the line width of the metal mesh WD in the normal region C, the area of the mesh holes of the metal mesh WD in the gap region G is smaller than the area of the mesh holes of the metal mesh WD in the normal region C.

[0145] Exemplarily, the line width of the metal mesh WD in the normal region C is 2.8 μm to 4.2 μm, such as 2.8 μm, 3.0 μm, 3.5 μm, 3.8 μm, 4.0 μm, or 4.2 μm. The line width of the metal mesh WD in the gap region G is 3.8 μm to 5.2 μm, such as 3.8 μm, 4.0 μm, 4.5 μm, 4.8 μm, 5.0 μm, or 5.2 μm.

[0146] In some embodiments, as Figure 14B shown, among the touch units passing through the first mounting hole H1 and the second mounting hole H2, each touch electrode located in the hole-edge region KB forms a hole-edge electrode K. Since a part of the hole-edge electrode K is missing at the position of the mounting hole H, the area of a single hole-edge electrode K is smaller than the area of a single touch electrode located in the normal region C.

[0147] It should be noted that Figure 14B only shows some hole-edge electrodes K as a schematic illustration. It should be understood that among the touch units passing through at least two mounting holes H, each touch electrode located in the hole-edge region KB forms a hole-edge electrode K, and a plurality of hole-edge electrodes K are distributed around the mounting hole H. In the hole-edge region KB, since the area of the hole-edge electrode K is smaller than the area of the touch electrode in the normal region C, there is a difference in the mutual capacitance value that can be generated by the hole-edge electrode K in the hole-edge region KB and the mutual capacitance value that can be generated by the touch electrode in the normal region C. When a finger scribes a line on the touch panel 100 and passes through this hole-edge region KB, the scribed line may shake, such as bend or even break, resulting in poor linearity of the scribed line on the touch panel 100.

[0148] Based on this, in some embodiments, the line width of the metal grid WD of the hole-edge electrode K in the hole-edge region KB is greater than the line width of the metal grid WD of the touch electrode in the normal region C, so as to be able to compensate for the electrode area of the hole-edge electrode K in the hole-edge region KB, increase the area of the electrode for transmitting the touch signal in the hole-edge electrode K in the hole-edge region KB, increase the mutual capacitance value that can be generated by the hole-edge electrode K in the hole-edge region KB, and thus be able to improve the problem of poor linearity of the scribed line in the hole-edge region KB of the touch panel 100.

[0149] Furthermore, the line width of the metal grid WD in the hole-edge region KB can be made equal to the line width of the metal grid WD in the gap region G.

[0150] In some embodiments, in the gap region G, compensating sub-electrodes are provided at positions of the gap electrodes (the gap electrodes include a first gap electrode 111, a second gap electrode 112, a third gap electrode 211, and a fourth gap electrode 212) close to the corresponding mounting holes H. The compensating sub-electrodes are planar electrodes, and the compensating sub-electrodes are electrically connected to other parts of the gap electrodes. It should be noted that the so-called "corresponding mounting hole" refers to the mounting hole H closest to the gap electrode.

[0151] By providing the compensating sub-electrodes, the electrode area for transmitting the touch signal of the gap electrodes can be increased, thereby increasing the mutual capacitance value between the gap electrodes in the gap region G.

[0152] And the compensating sub-electrodes are provided closest to the mounting hole H. When the touch panel 100 is applied to a display device, it is possible to avoid the planar compensating sub-electrodes blocking light and affecting the display effect.

[0153] Exemplarily, as Figure 16 shown, the first gap electrode 111 includes: a first main electrode 111S and a first compensating sub-electrode MD1 provided close to the first mounting hole H1. Among them, the first main electrode 111S is a metal grid structure, the first compensating sub-electrode MD1 is a planar electrode, and the first main electrode 111S is electrically connected to the first compensating sub-electrode MD1.

[0154] The second gap electrode 112 includes: a second main electrode 112S and a second compensating sub-electrode MD2 provided close to the second mounting hole H2. Among them, the second main electrode 112S is a metal grid structure, the second compensating sub-electrode MD2 is a planar electrode, and the second main electrode 112S is electrically connected to the second compensating sub-electrode MD2.

[0155] It should be noted that Figure 16Only the case where the compensation sub-electrodes are provided in both the first gap electrode 111 and the second gap electrode 112 is shown, but the embodiments of the present disclosure are not limited thereto. In some other embodiments, the compensation sub-electrodes may be provided in the first gap electrode 111, and the compensation sub-electrodes may not be provided in the second gap electrode 112; or the compensation sub-electrodes may not be provided in the first gap electrode 111, and the compensation sub-electrodes may be provided in the second gap electrode 112.

[0156] The ratio of the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212 to the sum of the area of ​​the metal grid of the first main electrode 111S, the area of ​​the first compensation sub-electrode MD1, the area of ​​the metal grid of the second main sub-electrode 112S and the area of ​​the second compensation sub-electrode MD2 is less than 1.3 and greater than or equal to 1. For example, the ratio may be 1, 1.05, 1.1, 1.15 or 1.2.

[0157] By electrically connecting the first main sub-electrode 111S to the first compensation sub-electrode MD1 and the second main electrode 112S to the second compensation sub-electrode MD2, the areas of the first gap electrode 111 and the second gap electrode 112 are further increased, and the difference between the sum of the areas of the first gap electrode 111 and the second gap electrode 112 and the sum of the areas of the third gap electrode 211 and the fourth gap electrode 212 is reduced, which is beneficial to increasing the facing area of ​​the first touch electrode 11 and the second touch electrode 21 in the gap region G.

[0158] The sum of the area of ​​the metal mesh of the first main sub-electrode 111S included in the first gap electrode 111 and the area of ​​the planar electrode of the first compensation sub-electrode MD1 accounts for 65% to 100% of the area of ​​the metal mesh of the first touch electrode 11 located in the normal area C, for example, 65%, 70%, 80%, 90% or 100%.

[0159] In the case where the first gap electrode 111 includes the first main sub-electrode 111S and the first compensation sub-electrode MD1, the area range of the metal grid of the first main sub-electrode 111S is 8.0×10 6 μm 2 ~1.0×10 7 μm 2 , for example, 8.0×10 6 μm 2 , 8.5×10 6 μm 2 9.0×10 6 μm 2 , 9.04×10 6 μm 2 or 1.0×10 7 μm 2; The area range of the planar electrode of the first compensation sub - electrode MD1 is 2.0×10 5 μm 2 ~4.0×10 5 μm 2 For example, it is 2.0×10 5 μm 2 、2.5×10 5 μm 2 、3.0×10 5 μm 2 、3.8×10 5 μm 2 or 4.0×10 5 μm 2 .

[0160] When the second gap electrode 112 includes the second main sub - electrode 112S and the second compensation sub - electrode MD2, the sum of the area of the metal grid of the second main sub - electrode 112S and the area of the planar electrode of the second compensation sub - electrode MD2 included in the second gap electrode 112 accounts for 65% - 100% of the area of the metal grid of the second touch electrode 21 in the normal area C. For example, it is 65%, 70%, 80%, 90% or 100%.

[0161] When the second gap electrode 112 includes the second main sub - electrode 112S and the second compensation sub - electrode MD2, the area range of the metal grid of the second main sub - electrode 112S is 7.0×10 6 μm 2 ~9.0×10 6 μm 2 For example, it is 7.0×10 6 μm 2 、7.76×10 6 μm 2 、8.0×10 6 μm 2 or 9.0×10 6 μm 2 ; The area range of the planar electrode of the second compensation sub - electrode MD2 is 2.0×10 5 μm 2 ~3.0×10 5 μm 2 For example, it is 2.0×10 5 μm 2 、2.3×10 5 μm 2 、2.5×10 5 μm2、2.8×10 5 μm 2 or 3.0×10 5 μm2 。

[0162] It should be noted that the "area of the metal grid of the first main sub - electrode 111S" refers to the area of the region enclosed by the contour of the metal grid of the first main sub - electrode 111S; similarly, the area of the metal grid of the second main sub - electrode 112S is the same.

[0163] In some embodiments, the hole - edge electrode K located in the hole - edge region KB includes: a main sub - electrode, and a compensation sub - electrode disposed near the corresponding mounting hole H. It should be noted that the so - called "corresponding mounting hole" refers to the mounting hole H closest to the hole - edge electrode K.

[0164] The main sub - electrode of the hole - edge electrode K can be a metal grid structure, and the compensation sub - electrode of the hole - edge electrode K can be a planar electrode. The main sub - electrode and the compensation sub - electrode are electrically connected, so as to be able to compensate the electrode area for transmitting touch signals of the hole - edge electrode K, increase the mutual capacitance value between the hole - edge electrodes K in the hole - edge region KB, and further improve the accuracy of touch - position sensing in the hole - edge region KB and the linearity of scribing.

[0165] When the touch panel 100 is rectangular, due to the difference in the lengths of the long side and the short side, the electrode area of the touch unit extending along the long - side direction is larger than the electrode area of the touch unit extending along the short - side direction. This will affect the mutual capacitance value generated between the touch unit extending along the long - side direction and the touch unit extending along the short - side direction, and further affect the accuracy of touch - position sensing.

[0166] Based on this, in some embodiments, dummy electrodes that are disconnected from the touch electrodes are provided in the touch electrodes of the touch unit extending along the long - side direction. The dummy electrodes are not electrically connected to the touch electrodes, so they do not transmit touch signals. As a result, the electrode area for transmitting signals in the touch unit extending along the long - side direction is reduced, so that the difference between the electrode area for transmitting signals in the touch unit extending along the long - side direction and the electrode area for transmitting signals in the touch unit extending along the short - side direction is narrowed, and even the two can be equal or approximately equal. Thus, it is possible to avoid the problem that the difference in the electrode areas for transmitting signals between the touch units in different extension directions in the touch panel 100 affects the mutual capacitance value between different touch units, and further improve the accuracy of touch - position sensing.

[0167] Exemplarily, such as Figure 10 、 Figure 12 and Figure 14BAs shown, when the touch panel 100 is rectangular, the first direction X is the short side direction, and the second direction Y is the long side direction, a dummy electrode DM disconnected from the metal grid WD for signal transmission is provided in the second touch electrode 21 extending along the second direction Y. The dummy electrode DM can also adopt a metal grid structure, for example, to ensure the display uniformity of the display device using the touch panel 100.

[0168] In some other embodiments, when the touch panel 100 is rectangular, the first direction X is the long side direction, and the second direction Y is the short side direction, a dummy electrode DM disconnected from the metal grid WD for signal transmission is provided in the first touch electrode 11 extending along the first direction X.

[0169] Next, refer to Figure 14B to introduce the connection relationship of the touch electrodes in the hole edge region KB and the gap region G.

[0170] In some embodiments, as Figure 14B shown, in the first touch unit 10 along the first direction X passing through the first mounting hole H1 and the second mounting hole H2, the first touch electrode 11 on the side of the first mounting hole H1 away from the second mounting hole H2 forms a fifth hole edge electrode 113, and the first touch electrode 11 on the side of the second mounting hole H2 away from the first mounting hole H1 forms a sixth hole edge electrode 114.

[0171] In the second touch unit 20 passing through the first mounting hole H1, the two second touch electrodes 21 on both sides of the first mounting hole H1 along the second direction Y respectively form a first hole edge electrode 213 and a second hole edge electrode 214. In the second touch unit 20 passing through the second mounting hole H2, the two second touch electrodes 21 on both sides of the second mounting hole H2 along the second direction Y respectively form a third hole edge electrode 215 and a fourth hole edge electrode 216.

[0172] In some embodiments, as Figure 14B shown, the first hole edge electrode 213, the third gap electrode 211, the fourth gap electrode 212, and the second hole edge electrode 214 are electrically connected in sequence, so that the second touch unit 20 extending along the second direction Y can be electrically connected.

[0173] Among them, as Figure 15 shown, the first hole edge electrode 213 and the third gap electrode 211 can be directly electrically connected. For example, the two can be formed as an integral structure.

[0174] As Figure 14B shown, the fourth gap electrode 212 and the second hole edge electrode 214 can be directly electrically connected. For example, the two can be formed as an integral structure.

[0175] As Figure 14B andFigure 17 As shown, a third hole-edge electrode 215 and a fourth hole-edge electrode 216 are electrically connected through a first connecting wire L1, and the first connecting wire L1 extends along the contour of the second mounting hole H2, so that the second touch unit 20 extending along the second direction Y can be electrically connected.

[0176] As Figure 14B and Figure 18 shown, a first gap electrode 111 and a fifth hole-edge electrode 113 are electrically connected through a second connecting wire L2, and the second connecting wire L2 extends along the contour of the first mounting hole H1; as Figure 14B and Figure 17 shown, a second gap electrode 112 and a sixth hole-edge electrode 114 are electrically connected through a third connecting wire L3, and the third connecting wire L3 extends along the contour of the second mounting hole H2, so that the first touch unit 10 extending along the first direction X can be electrically connected.

[0177] Based on the above structure, the setting positions of the first connecting wire L1 and the third connecting wire L3 cross each other. Therefore, please refer to Figure 3 again. The first connecting wire L1 and the third connecting wire L3 are at least in different layers in the touch function layer 2 at the crossing position. That is, at the crossing position, one of the first connecting wire L1 and the third connecting wire L3 is located in the touch electrode layer 2A in the touch function layer 2, and the other is located in the bridging structure layer 2C in the touch function layer 2. And the first connecting wire L1 and the third connecting wire L3 are separated by the insulating layer 2B in the touch function layer 2 at the crossing position to prevent crosstalk of the touch signals transmitted on the first connecting wire L1 and the third connecting wire L3.

[0178] Exemplarily, the first connecting wire L1 is arranged in the bridging structure layer 2C, and the first connecting wire L1 passes through different vias 2BK in the insulating layer 2B and is electrically connected to the third hole-edge electrode 215 and the fourth hole-edge electrode 216 respectively; the third connecting wire L3 is arranged in the touch electrode layer 2A, and the third connecting wire L3 is directly electrically connected to the sixth hole-edge electrode 114 and the second gap electrode 112.

[0179] Exemplarily, the first connecting wire L1 is arranged in the touch electrode layer 2A, and the first connecting wire L1 is directly electrically connected to the third hole-edge electrode 215 and the fourth hole-edge electrode 216 respectively; the third connecting wire L3 is arranged in the bridging structure layer 2C, and the third connecting wire L3 passes through different vias 2BK in the insulating layer 2B and is electrically connected to the sixth hole-edge electrode 114 and the second gap electrode 112 respectively.

[0180] In some embodiments, the second connection wire L2 may be disposed in the touch electrode layer 2A or in the bridging structure layer 2C. When the second connection wire L2 is disposed in the touch electrode layer 2A, the second connection wire L2 is directly electrically connected to the fifth hole-edge electrode 113 and the first gap electrode 111. When the second connection wire L2 is disposed in the bridging structure layer 2C, the second connection wire L2 passes through different vias 2BK in the insulating layer 2B and is electrically connected to the first gap electrode 111 and the fifth hole-edge electrode 113 respectively.

[0181] The whole formed by electrically connecting the first hole-edge electrode 213, the third gap electrode 211, the fourth gap electrode 212, and the second hole-edge electrode 214 is insulated from the whole formed by electrically connecting the third hole-edge electrode 215, the fourth hole-edge electrode 216, and the first connection wire L1, so that different touch units to which they belong are insulated from each other.

[0182] As Figure 19 shown, in the gap region G, the first gap electrode 111 is electrically connected to the second gap electrode 112, and the third gap electrode 211 is electrically connected to the fourth gap electrode 212. There is an intersection at the position where the first gap electrode 111 is electrically connected to the second gap electrode 112 and the third gap electrode 211 is electrically connected to the fourth gap electrode 212. Since the whole formed by electrically connecting the first gap electrode 111 and the second gap electrode 112 belongs to the first touch unit 10, and the whole formed by electrically connecting the third gap electrode 211 and the fourth gap electrode 212 belongs to the second touch unit 20, and the signals transmitted on the first touch unit 10 and the second touch unit 20 are different, the whole formed by electrically connecting the first gap electrode 111 and the second gap electrode 112 needs to be insulated from the whole formed by electrically connecting the third gap electrode 211 and the fourth gap electrode 212.

[0183] In some embodiments, referring to Figure 14A , the third gap electrode 211 and the fourth gap electrode 212 are electrically connected through a bridging structure located in the gap region G. In the second touch unit 20 passing through the gap region G, a line F connecting the center Z1 of any bridging structure (the first bridging structure 21A) located in the non-gap region and the center Z2 of the bridging structure (the gap bridging structure 20A) for connecting the third gap electrode 211 and the fourth gap electrode 212 intersects with the second direction Y, so that the third gap electrode 211 is electrically connected to the fourth gap electrode 212.

[0184] Compared with Figure 26AThe bridging structures 21A' in [the above] are all arranged along the second direction Y'. In the above embodiments of the present disclosure, among the second touch units 20 passing through the gap region G, for any bridging structure (the first bridging structure 21A) located in the non-gap region, the connection line F between the center Z1 and the center Z2 of the bridging structure (the gap bridging structure 20A) for connecting the third gap electrode 211 and the fourth gap electrode 212 intersects the second direction Y. While enabling the electrical connection between the third gap electrode 211 and the fourth gap electrode 212, it can meet the design of using the electrode arrangement structure described above in the gap region G.

[0185] In some embodiments, as Figure 3 shown, the touch function layer 2 includes a touch electrode layer 2A, an insulating layer 2B, and a bridging structure layer 2C stacked on the substrate 1. The insulating layer 2B is located between the touch electrode layer 2A and the bridging structure layer 2C, and the bridging structure layer 2C is located on one side of the touch electrode layer 2A close to or away from the substrate 1. Figure 3 shows the case where the bridging structure layer 2C is located on the side of the touch electrode layer 2A away from the substrate 1.

[0186] As Figure 4 shown, the first touch electrodes 11 and the second touch electrodes 21 are arranged in the touch electrode layer 2A. Along the first direction X, every two adjacent first touch electrodes 11 are directly electrically connected, and along the second direction Y, every two adjacent second touch electrodes 21 are independently arranged.

[0187] As Figure 3 shown, the insulating layer 2B has a plurality of vias 2BK.

[0188] As Figure 5 shown, the plurality of bridging structures (i.e., the first bridging structures 21A) included in each second touch unit 20 are arranged in the bridging structure layer 2C. As Figure 2 and Figure 3 shown, along the second direction Y, every two adjacent second touch electrodes 21 pass through different vias 2BK in the insulating layer 2B and are respectively electrically connected to a first bridging structure 21A, thereby realizing the electrical connection of each second touch electrode 21 included in the second touch unit 20 along the second direction Y.

[0189] It should be noted that Figures 2 - 5 only the case where the bridging structure layer 2C is located on the side of the touch electrode layer 2A away from the substrate 1 is taken as an example for illustration, however, the embodiments of the present disclosure are not limited thereto. In some other embodiments, in the touch function layer 2 of the touch panel 100, the bridging structure layer 2C is located on the side of the touch electrode layer 2A close to the substrate 1.

[0190] For the case where any two first touch electrodes 11 in the first touch unit 10 are directly electrically connected, and any two second touch electrodes 21 in the second touch unit 20 can be electrically connected through a first bridging structure 21A, as Figure 5 shown, each first bridging structure 21A can extend along the second direction Y to facilitate connecting the two second touch electrodes 21 on both sides thereof.

[0191] In some other embodiments, as Figures 6 - 9 shown, in the touch panel 100, it can also be that any two adjacent second touch electrodes 21 in the second touch unit 20 are directly electrically connected, and any two adjacent first touch electrodes 11 in the first touch unit 10 are electrically connected through a second bridging structure 11A provided in the bridging structure layer 2C'.

[0192] Exemplarily, as Figure 7 and Figure 8 shown, the first touch electrodes 11 and the second touch electrodes 21 are arranged in the touch electrode layer 2A'. Along the second direction Y, any two adjacent second touch electrodes 21 are directly electrically connected; along the first direction X, any two adjacent first touch electrodes 11 are independently arranged from each other.

[0193] As Figure 7 shown, the insulating layer 2B has a plurality of vias 2BK. As Figure 9 shown, the plurality of bridging structures (second bridging structures 11A) included in each first touch unit 10 are arranged in the bridging structure layer 2C'. As Figure 6 and Figure 7 shown, along the first direction X, any two adjacent first touch electrodes 11 pass through different vias 2BK and are respectively electrically connected to a second bridging structure 11A, so as to realize the electrical connection of the first touch unit 10 along the first direction X.

[0194] In the above embodiments, each second bridging structure 11A can extend along the first direction X to facilitate connecting the two first touch electrodes 11 on both sides thereof.

[0195] It should be noted that Figures 6 - 9 only takes the bridging structure layer 2C' being located on the side of the touch electrode layer 2A' close to the substrate 1 as an example for illustration, however, the embodiments of the present disclosure are not limited thereto. In some other embodiments, in the touch function layer 2 of the touch panel 100, the bridging structure layer 2C' is located on the side of the touch electrode layer 2A' away from the substrate 1.

[0196] In the above embodiments of the present disclosure, by directly electrically connecting one type of touch electrode among the first touch electrode 11 and the second touch electrode 21 in the touch electrode layer, and electrically connecting the other type of touch electrode through a cross-bridge structure formed by a bridge structure and a via 2BK in the insulating layer 2B, while forming a plurality of touch units along the first direction X and the second direction Y, it is ensured that the first touch electrode 11 and the second touch electrode 21 are kept insulated from each other.

[0197] It should be noted that in the touch area T of the touch panel 100, Figures 2 - 9 only the arrangement and connection structure of the touch electrodes in the partial area C' of the normal area C are shown. In the normal area C, the same arrangement and connection structure of the touch electrodes as in the partial area C' are also adopted in other areas except the partial area C'.

[0198] Figure 3 and Figure 7 The structure of the touch panel 100 shown is only for illustration. When the touch electrode layer is closer to the substrate 1 than the bridge structure layer, other film layers may further be included between the touch electrode layer and the substrate 1, such as an insulating layer, a planarization layer, etc.; when the bridge structure layer is closer to the substrate 1 than the touch electrode layer, other film layers may further be included between the bridge structure layer and the substrate 1, such as an insulating layer, a planarization layer, etc., which will not be introduced in detail here.

[0199] It should be noted that the substrate 1 in the touch panel 100 may be a blank substrate. For example, when the touch panel 100 is integrated with the display panel in the On-Cell form, the touch function layer 2 can be directly fabricated on a blank substrate to form the touch panel 100, and then the touch panel 100 is bonded to the display panel.

[0200] The substrate 1 in the touch panel 100 may also be a substrate on which some functional devices, pixel circuits or thin films are fabricated. For example, when integrating the touch structure on the display panel using the FMLOC technology, the touch function layer 2 can be directly fabricated on the encapsulation layer of the display panel. At this time, the overall substrate on which the pixel circuit, the film layer of the light-emitting device, and the encapsulation layer are fabricated can be regarded as the substrate 1 of the touch panel 100.

[0201] In some embodiments, as Figure 19 and Figure 20 shown, the first gap electrode 111 is directly electrically connected to the second gap electrode 112, and the third gap electrode 211 and the fourth gap electrode 212 are electrically connected through a via 2BK opened in the insulating layer 2B to a gap bridge structure 20A provided in the bridge structure layer 2C, thereby realizing the electrical connection of the third gap electrode 211 and the fourth gap electrode 212.

[0202] On this basis, by way of example, in order to improve the conductivity of the electrical connection between the third gap electrode 211 and the gap bridging structure 20A and reduce the loss of signals transmitted between the gap bridging structure 20A and the third gap electrode 211, a plurality of vias 2BK may be provided at the position where the gap bridging structure 20A is electrically connected to the third gap electrode 211, so that the gap bridging structure 20A and the third gap electrode 211 are electrically connected through the plurality of vias 2BK, increasing the contact area therebetween, thereby achieving the effect of improving the conductivity of the electrical connection therebetween.

[0203] Furthermore, the plurality of vias 2BK for electrically connecting the gap bridging structure 20A and the third gap electrode 211 may be arranged in a row ( Figure 19 and Figure 20 this situation is shown in), or arranged in multiple rows.

[0204] Similar to the above embodiments, in order to improve the conductivity of the electrical connection between the fourth gap electrode 212 and the gap bridging structure 20A and reduce the loss of signals transmitted between the gap bridging structure 20A and the fourth gap electrode 212, a plurality of vias 2BK may be provided at the position where the gap bridging structure 20A is electrically connected to the fourth gap electrode 212, so that the gap bridging structure 20A and the fourth gap electrode 212 are electrically connected through the plurality of vias 2BK, increasing the contact area therebetween, thereby achieving the effect of improving the conductivity of the electrical connection therebetween.

[0205] Furthermore, the plurality of vias 2BK for electrically connecting the gap bridging structure 20A and the fourth gap electrode 212 may be arranged in a row ( Figure 19 and Figure 20 this situation is shown in), or arranged in multiple rows.

[0206] It should be noted that Figure 19 and Figure 20 take the direct electrical connection between the first gap electrode 111 and the second gap electrode 112, and the electrical connection between the third gap electrode 211 and the fourth gap electrode 212 through the gap bridging structure 20A as an example for illustration. However, the embodiments of the present disclosure are not limited thereto. In some other embodiments, it may also be that the third gap electrode 211 and the fourth gap electrode 212 are directly electrically connected, and the first gap electrode 111 and the second gap electrode 112 are electrically connected through the gap bridging structure 20A.

[0207] It should be understood that the shape of the gap bridging structure 20A can be arbitrarily set according to needs.

[0208] In some embodiments, such as Figure 19 and Figure 20As shown, at the intersection of the structure formed by electrically connecting the first gap electrode 111 and the second gap electrode 112 and the structure formed by electrically connecting the third gap electrode 211 and the fourth gap electrode 212, the gap bridging structure 20A is provided with a hollowed-out portion 20A' at this intersection. The positive projection of the conductive pattern for directly electrically connecting the first gap electrode 111 and the second gap electrode 112 on the substrate 1 and the positive projection of the hollowed-out portion 20A' of the gap bridging structure 20A on the substrate 1 at least partially overlap.

[0209] In the above embodiment, the setting of the hollowed-out portion 20A' can reduce the overlapping area of the part of the gap bridging structure 20A connected to the first gap electrode 111 and the second gap electrode 112, thereby reducing the parasitic capacitance generated in the part of the gap bridging structure 20A connected to the first gap electrode 111 and the second gap electrode 112.

[0210] Figure 21 Shows Figure 14B The partial enlarged structure of the area shown by the dashed box E2 in Figure 22 Shows Figure 14B The partial enlarged structure of the area shown by the dashed box E3 in. In some embodiments, as Figure 21 and Figure 22 shown, the touch function layer 2 further includes: a light-blocking portion D, at least one connecting wire L, a signal shielding portion P, and an electrode wire X.

[0211] Among them, the light-blocking portion D is arranged at the edge of the mounting hole H and extends along the edge of the mounting hole H to form a closed-loop structure, which can prevent the light passing through the mounting hole H from entering the area around the mounting hole H. Since when the touch panel 100 is integrated with the display panel, the area around the mounting hole H is the area where image display is required, the light-blocking portion D preventing the light passing through the mounting hole H from entering the area around the mounting hole H can avoid this part of the light entering the display area and affecting the display quality.

[0212] Exemplarily, as Figure 23A shown, the light-blocking portion D is a single-layer closed-loop structure, that is, the light-blocking portion D includes a complete circle structure, which has a simple structure and is convenient for preparation.

[0213] Exemplarily, as Figure 23B shown, the light-blocking portion D can also be a double-layer closed-loop structure, that is, the light-blocking portion D includes a complete two-circle structure, which increases the shielding area of the light-blocking portion D, thereby being beneficial to improving the light-shielding effect of the light-blocking portion D.

[0214] Exemplarily, as Figure 23CAs shown, the light-blocking portion D can also be a single- and double-layer alternating ring structure. In this case, the light-blocking portion D includes an inner ring structure D1 and an outer ring structure D2 that are both discontinuously arranged. Along the edge direction of the mounting hole H, the overlapping part of the inner ring structure D1 and the outer ring structure D2 forms a double-layer structure, and the non-overlapping part forms a single-layer structure. Alternatively, the inner ring structure D1 and the outer ring structure D2 do not overlap. In this case, as Figure 23D shown, along the edge direction of the mounting hole H, the light-blocking portion D is a single-layer ring structure.

[0215] In some embodiments, the width range of the light-blocking portion D is 60μm to 100μm, such as 60μm, 68μm, 80μm, 90μm, 92μm, or 100μm.

[0216] Exemplarily, when the line width of the metal grid WD in the gap region G is 4μm, the ratio range of the width of the light-blocking portion D to the line width of the metal grid WD in the gap region G is 15 to 25, such as 15, 17, 20, 23, or 25.

[0217] Exemplarily, when the line width of the metal grid WD in the gap region G is 5μm, the ratio range of the width of the light-blocking portion D to the line width of the metal grid WD in the gap region G is 12 to 20, such as 12, 13.6, 16, 18, 18.4, or 20.

[0218] The at least one connecting wire L is disposed on the side of the light-blocking portion D away from the mounting hole H and extends along the contour of the mounting hole H. The connecting wire L is used to electrically connect two adjacent first touch electrodes 11 arranged in the first direction X or two adjacent second touch electrodes 21 arranged in the second direction Y. The at least one connecting wire L includes at least one of the first connecting wire L1, the second connecting wire L2, and the third connecting wire L3 described above.

[0219] Figure 21 In [reference] is illustrated by taking one connecting wire L disposed on the side of the light-blocking portion D away from the second mounting hole H2 as an example. Figure 22 In [reference] is illustrated by taking three connecting wires L disposed on the side of the light-blocking portion D away from the first mounting hole H1 as an example.

[0220] It should be noted that Figure 21 and Figure 22 illustrate the case where the connecting wire L includes the first connecting wire L1, the second connecting wire L2, and the third connecting wire L3. The setting positions of the first connecting wire L1, the second connecting wire L2, and the third connecting wire L3 in the touch function layer 2, and the way of electrically connecting them to the touch electrodes can be referred to the corresponding embodiments above, and will not be elaborated here.

[0221] In some embodiments, the width range of the connection wire L is 20 μm to 60 μm, for example, 20 μm, 30 μm, 40 μm, 50 μm, or 60 μm.

[0222] Exemplarily, when the line width of the metal grid WD located in the gap region G is 4 μm, the ratio range of the width of the connection wire L to the line width of the metal grid WD located in the gap region G is 5 to 15, for example, 5, 7.5, 10, 12.5, or 15.

[0223] Exemplarily, when the line width of the metal grid WD located in the gap region G is 5 μm, the ratio range of the width of the connection wire L to the line width of the metal grid WD located in the gap region G is 4 to 12, for example, 4, 6, 8, 9, 10, or 12.

[0224] In some embodiments, as Figure 21 and Figure 22 shown, an electrode wire X is provided at the edge of the touch electrode close to the mounting hole H. The electrode wire X is electrically connected to the touch electrode and extends along the contour of the mounting hole H. The electrode wire X is a planar electrode, and its width can be greater than the width of the grid line of the metal grid of the touch electrode. In this way, when it is necessary to electrically connect the touch electrode to the connection wire L, the electrode wire X can be used to achieve the electrical connection between the touch electrode and the connection wire L. Compared with the connection method of directly electrically connecting the touch electrode of the metal grid structure to the connection wire L, this connection method can improve the conductivity between the touch electrode and the connection wire L, thereby improving the transmission rate of the touch signal.

[0225] The electrode wire X can be made of the same material as the touch electrode and be arranged in the same layer, so that the electrode wire X can be directly electrically connected to the touch electrode.

[0226] On this basis, when the touch electrode and the connection wire L to be connected are in different layers, by setting the electrode wire, the touch electrode is directly electrically connected to the electrode wire X, and the electrode wire X is electrically connected to the connection wire L through the via 2BK, so that the electrical connection between the touch electrode and the connection wire L can be realized. Therefore, compared with the touch electrode of the metal grid structure being electrically connected to the connection wire L through the via, the planar electrode structure connection wire L is electrically connected to the connection wire L through the via 2BK, which can improve the alignment accuracy of the electrode wire X connected to the touch electrode and the via 2BK, thereby improving the conductivity of the electrical connection between the touch electrode and the connection wire L.

[0227] Exemplarily, as Figure 21As shown, a first electrode line X1 is provided at the edge of the second gap electrode 112 close to the second mounting hole H2. The first electrode line X1 is electrically connected to the second gap electrode 112. The first electrode line X1 and the third connection wire L3 are electrically connected to the bridging structure in the bridging structure layer 2C through a via 2BK opened in the insulating layer 2B, so as to realize the electrical connection between the second gap electrode 112 and the sixth hole-edge electrode 114. A second electrode line X2 is provided at the edge of the fourth hole-edge electrode 216 close to the second mounting hole H2. The second electrode line X2 is electrically connected to the fourth hole-edge electrode 216. The second electrode line X2 is directly electrically connected to the first connection wire L1, so as to realize the electrical connection between the third hole-edge electrode 215 and the fourth hole-edge electrode 216.

[0228] Exemplarily, as Figure 22 shown, a third electrode line X3 is provided at the edge of the fifth hole-edge electrode 113 close to the first mounting hole H1. The third electrode line X3 is electrically connected to the fifth hole-edge electrode 113. The third electrode line X3 is directly electrically connected to the second connection wire L2, so as to realize the electrical connection between the fifth hole-edge electrode 113 and the first gap electrode 111.

[0229] It should be noted that Figure 21 and Figure 22 the connection manner between the electrode line X and the connection wire L is only for illustration. For the setting manner of the electrical connection between the two, reference can be made to the embodiment in which the touch electrode is electrically connected through the connection wire L. The electrical connection between the touch electrode and the connection wire L can be regarded as the electrical connection between the electrode line X electrically connected to the touch electrode and the connection wire. Therefore, it will not be elaborated here.

[0230] In some embodiments, the width range of the electrode line X is 20μm to 60μm, for example, 20μm, 30μm, 40μm, 50μm or 60μm.

[0231] Exemplarily, when the line width of the metal grid WD in the gap region G is 4μm, the ratio range of the width of the electrode line X to the line width of the metal grid WD in the gap region G is 5 to 15, for example, 5, 7.5, 10, 12.5 or 15.

[0232] Exemplarily, when the line width of the metal grid WD in the gap region G is 5μm, the ratio range of the width of the electrode line X to the line width of the metal grid WD in the gap region G is 4 to 12, for example, 4, 6, 8, 10 or 12.

[0233] In some embodiments, the touch function layer 2 further includes a signal shielding portion P, which is disposed between the connection wire L and the electrode wire X, or between different connection wires L; the signal shielding portion P extends along the contour of the mounting hole H. The signal shielding portion P is used to prevent crosstalk between the connection wire L and the electrode wire X that transmit different touch signals on both sides of the signal shielding portion P, or between different connection wires. It should be noted that the so-called "different touch signals" refer to the TX signal and the RX signal; among them, one of the TX signal and the RX signal is transmitted on the first touch unit, and the other is transmitted on the second touch unit).

[0234] Exemplarily, the signal shielding portion P may not be connected to other conductive structures in the touch panel, or may be grounded, or may be connected to a low-voltage signal to achieve the effect of shielding different touch signals on both sides thereof.

[0235] Exemplarily, as Figure 21 shown, between the first electrode wire X1 and the first connection wire L1, and between the second electrode wire X2 and the third connection wire L3, a first signal shielding portion P1 is respectively provided, and the first signal shielding portion P1 can prevent crosstalk of different touch signals respectively transmitted on the first electrode wire X1 and the first connection wire L1, and the second electrode wire X2 and the third connection wire L3.

[0236] Exemplarily, as Figure 14B shown, the hole-edge electrode K at the upper right position of the first mounting hole H1 is the seventh hole-edge electrode 217, and the hole-edge electrode K at the lower left position of the first mounting hole H1 is the eighth hole-edge electrode 218. The seventh hole-edge electrode 217 and the eighth hole-edge electrode 218 are electrically connected through a fourth connection wire L4. On this basis, as Figure 22 shown, between the third electrode wire X3 and the fourth connection wire L4, a first signal shielding portion P1 is provided to prevent crosstalk of the touch signals transmitted on the third electrode wire X3 and the fourth connection wire L4; there are two connection wires, namely the fourth connection wire L4 and the second connection wire L2, between the first signal shielding portion P1 and the light shielding portion D. Since different touch signals are transmitted on the fourth connection wire L4 and the second connection wire L2, a second signal shielding portion P2 is provided between the fourth connection wire L4 and the second connection wire L2 to prevent crosstalk of the touch signals transmitted on the fourth connection wire L4 and the second connection wire L2.

[0237] In some embodiments, the width range of the signal shielding portion P is 10 μm to 50 μm, for example, 10 μm, 20 μm, 30 μm, 40 μm or 50 μm.

[0238] Exemplarily, when the line width of the metal grid WD located in the gap region G is 4 μm, the ratio range of the width of the signal shielding portion P to the line width of the metal grid WD located in the gap region G is 2.5 to 12.5, for example, 2.5, 5, 7.5, 10, or 12.5.

[0239] Exemplarily, when the line width of the metal grid WD located in the gap region G is 5 μm, the ratio range of the width of the signal shielding portion P to the line width of the metal grid WD located in the gap region G is 2 to 10, for example, 2, 4, 6, 8, or 10.

[0240] As Figure 24 and Figure 25 shown, some embodiments of the present disclosure provide a touch display device 1000, and the touch display device 1000 can be an electroluminescent display device or a photoluminescent display device. When the touch display device 1000 is an electroluminescent display device, the electroluminescent display device can be an organic electroluminescent display device (Organic Light-Emitting Diode, abbreviated as OLED) or a quantum dot electroluminescent display device (Quantum Dot Light Emitting Diodes, abbreviated as QLED). When the touch display device 1000 is a photoluminescent display device, the photoluminescent display device can be a quantum dot photoluminescent display device.

[0241] As Figure 24 and Figure 25 shown, when the touch display device 1000 is an electroluminescent display device, the main structure of the electroluminescent display device includes an electroluminescent display panel 400, a touch panel 100 as described in some of the above embodiments, a polarizer 500, a first optically clear adhesive (OCA) 600, and a cover glass 300 arranged in sequence.

[0242] Among them, the electroluminescent display panel 400 includes a display substrate 401 and a packaging layer 402 for packaging the display substrate 401. Here, the packaging layer 402 can be a packaging film or a packaging substrate.

[0243] In some embodiments, as shown in FIG. 23, the touch function layer 2 of the touch panel 100 is directly disposed on the packaging layer 402, so that the electroluminescent display panel 400 can be regarded as the substrate 1 of the touch panel 100, and this structure is beneficial to realizing the thinning of the display device.

[0244] In other embodiments, as Figure 25As shown, the touch function layer 2 of the touch panel 100 is disposed on the substrate 1, and the substrate 1 is attached to the encapsulation layer 402 through a second optical adhesive 700. The material of the substrate 1 may be, for example, polyethylene terephthalate (PET), polyimide (PI), cyclo olefin polymer (COP), etc.

[0245] As Figure 24 and Figure 25 shown, each sub-pixel of the display substrate 401 described above includes a light-emitting device and a driving circuit disposed on the substrate 310, and the driving circuit includes a plurality of thin film transistors TFTs. The light-emitting device includes an anode 311, a light-emitting function layer 312, and a cathode 313, and the anode 311 is electrically connected to the drain of the thin film transistor TFT that serves as a driving transistor among the plurality of thin film transistors TFTs.

[0246] The display substrate 401 further includes a pixel defining layer 314, and the pixel defining layer 314 includes a plurality of opening regions, and one light-emitting device is disposed in one opening region.

[0247] In some embodiments, the light-emitting function layer 312 includes a light-emitting layer. In other embodiments, in addition to the light-emitting layer, the light-emitting function layer 312 further includes one or more of an electron transporting layer (ETL), an electron injection layer (EIL), a hole transporting layer (HTL), and a hole injection layer (HIL).

[0248] As shown in FIG. 23, the display substrate 401 further includes a planarization layer 315 disposed between the thin film transistor TFT and the anode 311.

[0249] When the touch display device 1000 is an electroluminescent display device, the touch display device 1000 may be a top-emitting display device. In this case, the anode 311 close to the substrate 310 is opaque, and the cathode 313 away from the substrate 310 is transparent or semi-transparent; the touch display device 1000 may also be a bottom-emitting display device. In this case, the anode 311 close to the substrate 310 is transparent or semi-transparent, and the cathode 313 away from the substrate 310 is opaque; the touch display device 1000 may also be a double-sided light-emitting display device. In this case, both the anode 311 close to the substrate 310 and the cathode 313 away from the substrate 310 are transparent or semi-transparent.

[0250] The beneficial effects achievable by the above touch display device 1000 are the same as those of the touch panel 100 in the above embodiments, and will not be elaborated here.

[0251] As described above, the foregoing are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure who contemplates changes or substitutions should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A touch panel, characterized in that, it has a touch area; the touch panel includes: a substrate; a touch function layer disposed on the substrate, the touch function layer includes a plurality of first touch units extending in a first direction and a plurality of second touch units extending in a second direction; each first touch unit includes a plurality of first touch electrodes arranged along the first direction and connected in series with each other, and each second touch unit includes a plurality of second touch electrodes arranged along the second direction and connected in series with each other; the first touch electrodes and the second touch electrodes are insulated from each other; the first direction and the second direction intersect; wherein, the substrate has at least two mounting holes located in the touch area, and the touch function layer is hollowed out at the positions of the at least two mounting holes; there is a gap area between two adjacent mounting holes; in the first touch units passing through the gap area, the first touch electrodes located in the gap area form a first gap electrode and a second gap electrode that are arranged along the first direction and electrically connected to each other; in the second touch units passing through the gap area, the second touch electrodes located in the gap area form a third gap electrode and a fourth gap electrode that are arranged along the second direction and electrically connected to each other; along the first direction, the third gap electrode is located between the first gap electrode and the second gap electrode; at least one branch is provided at the edge of at least one of the third gap electrode and the fourth gap electrode, the edge is close to at least one of the first gap electrode and the second gap electrode, and the at least one branch extends into the gap electrode that the edge it is located at is close to.

2. The touch panel according to claim 1, characterized in that, the contour of the first gap electrode and / or the second gap electrode is at least partially different from the contour of the first touch electrodes located in non-gap areas; the contour of the third gap electrode and / or the fourth gap electrode is at least partially different from the contour of the second touch electrodes located in non-gap areas; the third gap electrode is embedded inside the whole electrode formed by the electrical connection of the first gap electrode and the second gap electrode.

3. The touch panel according to claim 1 or 2, characterized in that, the mutual capacitance value between the first gap electrode and the second gap electrode, and the third gap electrode and the fourth gap electrode is C1; the mutual capacitance value between the first touch electrodes and the second touch electrodes located in non-gap areas is C2; the ratio range of C1 to C2 is 0.75 to 0.

8.

4. The touch panel according to claim 1, characterized in that, the distance range between two adjacent mounting holes on both sides of the gap area is 900 μm to 1200 μm.

5. The touch panel according to claim 1, characterized in that, the ratio range of the sum of the areas of the third gap electrode and the fourth gap electrode to the sum of the areas of the first gap electrode and the second gap electrode is 1.2 to 1.

4.

6. The touch panel according to claim 1, characterized in that, The ratio range of the area of the second touch electrode to the area of the first touch electrode in the non-gap region is 0.9 to 1.

7. The touch panel according to claim 1, wherein, the edge of the branch is in a polygonal shape.

8. The touch panel according to claim 1, wherein, the mutually approaching contour shapes of the third gap electrode and the first gap electrode are complementary, and the mutually approaching contour shapes of the third gap electrode and the second gap electrode are complementary.

9. The touch panel according to claim 8, wherein, the contour of the third gap electrode has protrusions of various shapes, and the protrusions of various shapes include at least two of a wavy protrusion, a rectangular protrusion, a trapezoidal protrusion, and a triangular protrusion; the third gap electrode includes a first part, a second part, and a third part that are connected into an integral body. Along the second direction and in the direction from the third gap electrode to the fourth gap electrode, the first part, the second part, and the third part are arranged in sequence; the average dimensions of the first part and the third part along the first direction are both smaller than the average dimension of the second part along the first direction.

10. The touch panel according to claim 9, wherein, both the contour of the first part close to the first gap electrode and the contour close to the second gap electrode have the wavy protrusions.

11. The touch panel according to claim 1, wherein, two adjacent mounting holes on both sides of the gap region are a first mounting hole and a second mounting hole respectively, and the first mounting hole and the second mounting hole are arranged along the first direction; the first gap electrode is adjacent to the side of the first mounting hole close to the gap region, and the second gap electrode is adjacent to the side of the second mounting hole close to the gap region; wherein, in the touch region, the region around the first mounting hole and the second mounting hole and not in the gap region is a hole-edge region; the region in the touch region except the gap region and the hole-edge region is a normal region.

12. The touch panel according to claim 11, wherein, the first touch electrode and the second touch electrode include a metal mesh structure; the line width of the metal mesh of at least one of the first gap electrode, the second gap electrode, the third gap electrode, and the fourth gap electrode is greater than the line width of the metal mesh of the touch electrode in the normal region.

13. The touch panel according to claim 12, wherein, the line width of the metal mesh of at least one of the first gap electrode, the second gap electrode, the third gap electrode, and the fourth gap electrode ranges from 3.8 μm to 5.2 μm; the line width of the metal mesh of the touch electrode in the normal region ranges from 2.8 μm to 4.2 μm.

14. The touch panel according to any one of claims 11 to 13, wherein, The first gap electrode includes: a first main electrode, and a first compensation sub - electrode disposed near the first mounting hole; the first main electrode is a metal mesh structure, the first compensation sub - electrode is a planar electrode, and the first main electrode is electrically connected to the first compensation sub - electrode; and / or, The second gap electrode includes: a second main electrode, and a second compensation sub - electrode disposed near the second mounting hole; the second main electrode is a metal mesh structure, the second compensation sub - electrode is a planar electrode, and the second main electrode is electrically connected to the second compensation sub - electrode.

15. The touch panel according to claim 14, wherein, The ratio of the sum of the areas of the third gap electrode and the fourth gap electrode to the sum of the area of the metal mesh of the first main electrode, the area of the first compensation sub - electrode, the area of the metal mesh of the second main electrode, and the area of the second compensation sub - electrode is less than 1.3 and greater than or equal to 1.

16. The touch panel according to claim 11, wherein, Among the touch units passing through the first mounting hole and the second mounting hole, each touch electrode located in the hole - edge area forms a hole - edge electrode; The hole - edge electrode includes: a main electrode, and a compensation sub - electrode disposed near the corresponding mounting hole; the main electrode is a metal mesh structure, the compensation sub - electrode is a planar electrode, and the main electrode is electrically connected to the compensation sub - electrode.

17. The touch panel according to claim 16, wherein, Among the second touch units passing through the first mounting hole, two second touch electrodes located on both sides of the first mounting hole along the second direction respectively form a first hole - edge electrode and a second hole - edge electrode; the first hole - edge electrode, the third gap electrode, the fourth gap electrode, and the second hole - edge electrode are electrically connected in sequence; Among the second touch units passing through the second mounting hole, two second touch electrodes located on both sides of the second mounting hole along the second direction respectively form a third hole - edge electrode and a fourth hole - edge electrode; the third hole - edge electrode and the fourth hole - edge electrode are electrically connected by a first connecting wire, and the first connecting wire extends along the contour of the second mounting hole; The whole formed by the electrical connection of the first hole - edge electrode, the third gap electrode, the fourth gap electrode, and the second hole - edge electrode is insulated from the whole formed by the electrical connection of the third hole - edge electrode, the fourth hole - edge electrode, and the first connecting wire.

18. The touch panel according to claim 16 or 17, wherein, Among the first touch units passing through the first mounting hole and the second mounting hole, the first touch electrode located on the side of the first mounting hole away from the second mounting hole forms a fifth hole - edge electrode; the first touch electrode located on the side of the second mounting hole away from the first mounting hole forms a sixth hole - edge electrode; The fifth hole - edge electrode is electrically connected to the first gap electrode by a second connecting wire, and the second connecting wire extends along the contour of the first mounting hole; The sixth hole-edge electrode and the second gap electrode are electrically connected by a third connecting wire, and the third connecting wire extends along the contour of the second mounting hole.

19. The touch panel according to claim 1, wherein, each of the second touch units further includes a plurality of bridging structures, and along the second direction, every two adjacent second touch electrodes are electrically connected by one bridging structure; the third gap electrode and the fourth gap electrode are electrically connected by one bridging structure located in the gap region; in the second touch unit passing through the gap region, the line connecting the center of any bridging structure located outside the gap region and the center of the bridging structure for connecting the third gap electrode and the fourth gap electrode intersects with the second direction.

20. The touch panel according to claim 19, wherein, the touch function layer includes a touch electrode layer, an insulating layer, and a bridging structure layer stacked on the substrate; the insulating layer is located between the touch electrode layer and the bridging structure layer, and the bridging structure layer is located on one side of the touch electrode layer close to or away from the substrate; the first touch electrode and the second touch electrode are disposed in the touch electrode layer; along the first direction, every two adjacent first touch electrodes are directly electrically connected; along the second direction, every two adjacent second touch electrodes are independently arranged; the insulating layer has a plurality of vias; the plurality of bridging structures included in each second touch unit are disposed in the bridging structure layer, and along the second direction, every two adjacent second touch electrodes pass through different vias and are respectively electrically connected to one bridging structure; the bridging structure for connecting the third gap electrode and the fourth gap electrode is a gap bridging structure, and the third gap electrode and the fourth gap electrode pass through different vias in the insulating layer and are respectively electrically connected to the gap bridging structure.

21. The touch panel according to claim 20, wherein, the gap bridging structure has a hollowed-out portion; the orthographic projection of the conductive pattern for directly electrically connecting the first gap electrode and the second gap electrode on the substrate at least partially overlaps with the orthographic projection of the hollowed-out portion of the gap bridging structure on the substrate.

22. The touch panel according to claim 20 or 21, wherein, when the touch electrode layer includes a third hole-edge electrode, a fourth hole-edge electrode, a fifth hole-edge electrode, and a sixth hole-edge electrode, and the third hole-edge electrode and the fourth hole-edge electrode are electrically connected by a first connecting wire, the fifth hole-edge electrode and the first gap electrode are electrically connected by a second connecting wire, and the sixth hole-edge electrode and the second gap electrode are electrically connected by a third connecting wire, the first connecting wire is disposed in the bridging structure layer, and the first connecting wire passes through different vias in the insulating layer and is respectively electrically connected to the third hole-edge electrode and the fourth hole-edge electrode; The second connecting wire is disposed in the touch electrode layer, and the second connecting wire is directly electrically connected to the fifth hole-edge electrode and the first gap electrode; The third connecting wire is disposed in the touch electrode layer, and the third connecting wire is directly electrically connected to the sixth hole-edge electrode and the second gap electrode.

23. The touch panel according to claim 1, wherein, the touch function layer further includes: a light-shielding portion, at least one connecting wire, a first signal shielding portion, and an electrode wire, which are sequentially arranged around the mounting hole along the radial direction of the mounting hole and from the center of the mounting hole to the edge; the light-shielding portion, the connecting wire, the first signal shielding portion, and the electrode wire all extend along the contour of the mounting hole; wherein, the light-shielding portion extends along the edge of the mounting hole to form a closed-loop structure, and the light-shielding portion is configured to block light passing through the mounting hole from entering the area around the mounting hole; the connecting wire is configured to electrically connect two adjacent first touch electrodes arranged along the first direction, or electrically connect two adjacent second touch electrodes arranged along the second direction; the electrode wire is configured to electrically connect the edge of the first touch electrode or the second touch electrode close to the mounting hole; the first signal shielding portion is at least disposed between adjacent connecting wires and electrode wires, and the first signal shielding portion is configured to prevent crosstalk of electrical signals transmitted on the adjacent connecting wires and electrode wires.

24. The touch panel according to claim 23, wherein, a plurality of the connecting wires are disposed between the light-shielding portion and the first signal shielding portion, and a second signal shielding portion is disposed between adjacent two of the connecting wires; the second signal shielding portion extends along the contour of the mounting hole; the second signal shielding portion is configured to prevent crosstalk of electrical signals transmitted on adjacent two of the connecting wires.

25. A touch display device, wherein, it includes the touch panel according to any one of claims 1 to 24.

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