Touch module and electronic device

Abstract

The application provides a touch module and an electronic device. The touch function film layer comprises a touch electrode. The electromagnetic coil function film layer comprises a first electromagnetic electrode extending along a first direction and a second electromagnetic electrode extending along a second direction. The first direction intersects the second direction. At least one of the first electromagnetic electrode and the second electromagnetic electrode is misaligned with the touch electrode on a first insulating layer. By misaligning the touch electrode and the electromagnetic electrode, the overlapping area of the touch electrode and the electromagnetic electrode extending in the same direction can be reduced, thereby reducing the influence of the electromagnetic electrode on the touch electrode detection progress and load.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a touch module and an electronic device. Background Technology

[0002] In some electronic devices, to improve the handwriting experience, in addition to the capacitive touch detection film, an electromagnetic resonance (EMR) detection film is also added to detect the stylus. However, the EMR coil electrodes may affect the detection sensitivity or load of the touch electrodes. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a touch module, the touch module comprising an electromagnetic coil functional film layer, a first insulating layer and a touch functional film layer stacked together; The touch-sensitive functional film layer includes touch electrodes; The electromagnetic coil functional film layer includes a first electromagnetic electrode extending along a first direction and a second electromagnetic electrode extending along a second direction; the first direction intersects the second direction; Wherein, the orthographic projection of at least one of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer is offset from the orthographic projection of the touch electrode on the first insulating layer.

[0004] In one possible implementation, the touch electrode includes a first touch electrode extending along the first direction and a second touch electrode extending along the second direction; Wherein, the orthographic projection of the first touch electrode on the first insulating layer is offset from the orthographic projection of the first electromagnetic electrode on the first insulating layer, and the orthographic projection of the second touch electrode on the first insulating layer is offset from the orthographic projection of the second electromagnetic electrode on the first insulating layer.

[0005] In one possible implementation, a plurality of second touch electrodes are spaced apart along the first direction; the first touch electrode includes a plurality of touch electrode blocks arranged along the first direction, and adjacent touch electrode blocks in the same first touch electrode are electrically connected by a second bridging wire, wherein the orthographic projection of the second bridging wire on the first insulating layer at least partially overlaps with the orthographic projection of the second touch electrode on the first insulating layer; A plurality of second electromagnetic electrodes are spaced apart along the first direction; the first electromagnetic electrode includes a plurality of coil electrode blocks arranged along the first direction, and adjacent coil electrode blocks in the same first electromagnetic electrode are electrically connected by a first bridging wire, and the orthographic projection of the first bridging wire on the first insulating layer at least partially overlaps with the orthographic projection of the second electromagnetic electrode on the first insulating layer.

[0006] In one possible implementation, the orthographic projection of the touch electrode block on the first insulating layer is located between the orthographic projections of the adjacent second touch electrode on the first insulating layer; The orthographic projection of the coil electrode block on the first insulating layer lies between the orthographic projections of the adjacent second electromagnetic electrode on the first insulating layer.

[0007] In one possible implementation, the orthographic projection of the touch electrode block on the first insulating layer is located between the orthographic projections of two adjacent coil electrode blocks on the first insulating layer in the first direction, and the orthographic projection of the coil electrode block on the first insulating layer is located between the orthographic projections of two adjacent touch electrode blocks on the first insulating layer in the first direction. The orthographic projection of the second touch electrode on the first insulating layer is located between the orthographic projections of two adjacent second electromagnetic electrodes on the first insulating layer.

[0008] In one possible implementation, the touch function film layer includes a first touch trace layer, the touch electrode block of the first touch electrode and the second touch electrode are located in the first touch trace layer, and the second bridging line is located in other film layers besides the first touch trace layer.

[0009] In one possible implementation, the electromagnetic coil functional film layer includes a first coil trace layer, a second coil trace layer, and a second insulating layer located between the first coil trace layer and the second coil trace layer; The coil electrode block and the first bridging wire are located in the first coil trace layer, and the second electromagnetic electrode and the second bridging wire are located in the second coil trace layer; Preferably, the touch-sensitive functional film layer is located on the side of the second coil trace layer away from the first coil trace layer.

[0010] In one possible implementation, the electromagnetic coil functional film layer includes a first coil trace layer; the coil electrode block of the first electromagnetic electrode and the second electromagnetic electrode are located in the first coil trace layer; The touch module further includes a bridging trace layer located between the touch function film layer and the electromagnetic coil function film layer; the first bridging wire and the second bridging wire are located in the bridging trace layer.

[0011] In one possible implementation, the orthographic projection of the touch electrode block on the first insulating layer and the orthographic projection of the second electromagnetic electrode on the first insulating layer at least partially overlap; the orthographic projection of the coil electrode block on the first insulating layer and the orthographic projection of the second touch electrode on the first insulating layer at least partially overlap. Preferably, in the second direction, the touch electrode blocks are spaced apart, and the orthographic projection of the touch electrode blocks on the first insulating layer overlaps at least partially with the orthographic projection of the second electromagnetic electrode extending along the second direction on the first insulating layer. In the second direction, the coil electrode blocks are spaced apart, and the orthographic projection of the coil electrode blocks on the first insulating layer at least partially overlaps with the orthographic projection of the second touch electrode extending along the second direction on the first insulating layer.

[0012] In one possible implementation, the width of the coil electrode block in the first direction is smaller than the width of the second touch electrode in the first direction; and / or, the width of the second electromagnetic electrode in the first direction is smaller than the width of the touch electrode block in the first direction; Preferably, in the first direction, the orthographic projection of the coil electrode block on the first insulating layer does not exceed the orthographic projection of the second touch electrode on the first insulating layer; and / or, in the first direction, the orthographic projection of the second electromagnetic electrode on the first insulating layer does not exceed the orthographic projection of the touch electrode block on the first insulating layer.

[0013] In one possible implementation, the second electromagnetic electrode and the touch electrode block are composed of a grid, and at the overlapping position of the second electromagnetic electrode and the touch electrode block, the grid density of the second electromagnetic electrode and the grid density of the touch electrode block are different. And / or, the coil electrode block and the second touch electrode are composed of a grid, and at the overlapping position of the coil electrode block and the second touch electrode, the grid density of the coil electrode block and the grid density of the second touch electrode are different.

[0014] In one possible implementation, the second electromagnetic electrode includes at least two regions with different grid densities, and the touch electrode block includes at least two regions with different grid densities.

[0015] In one possible implementation, the orthographic projection of the region with higher grid density in the second electromagnetic electrode onto the first insulating layer at least partially overlaps with the orthographic projection of the region with lower grid density in the touch electrode block onto the first insulating layer.

[0016] In one possible implementation, the region with higher grid density in the touch electrode block is closer to the second touch electrode than the region with lower grid density in the touch electrode block.

[0017] In one possible implementation, the coil electrode block includes at least two regions with different grid densities, and the second touch electrode includes at least two regions with different grid densities.

[0018] In one possible implementation, the orthographic projection of the region with higher grid density in the coil electrode block onto the first insulating layer at least partially overlaps with the orthographic projection of the region with lower grid density in the second touch electrode onto the first insulating layer.

[0019] In one possible implementation, the region with higher grid density in the second touch electrode is closer to the touch electrode block than the region with lower grid density in the second touch electrode.

[0020] In one possible implementation, the grid density of the second electromagnetic electrode is generally smaller than the grid density of the touch electrode block; And / or, the grid density of the coil electrode block is generally smaller than the grid density of the second touch electrode.

[0021] In one possible implementation, the touch electrode block and the second touch electrode are composed of a grid, wherein the grid density of the second touch electrode is greater than the grid density of the touch electrode block.

[0022] In one possible implementation, the two ends of two or more adjacent first electromagnetic electrodes are connected in parallel along the second direction to form a first electromagnetic electrode group; one end of two adjacent first electromagnetic electrode groups is connected, and the other end is respectively connected to a first electromagnetic coil detection drive circuit to form a first closed coil detection loop. Two or more adjacent second electromagnetic electrodes are connected in parallel at both ends along the first direction to form a second electromagnetic electrode group; two adjacent second electromagnetic electrode groups are connected at one end and the other end is respectively connected to the second electromagnetic coil detection drive circuit to form a second closed coil detection loop.

[0023] In one possible implementation, the first electromagnetic electrode, the second electromagnetic electrode, the first touch electrode, and the second touch electrode can be formed by connecting a plurality of rhomboid electrode blocks arranged along their respective extension directions via bridging wires; the orthographic projection of the electrode block of the first electromagnetic electrode on the first insulating layer lies within the orthographic projection of the electrode block of the second touch electrode on the first insulating layer; the orthographic projection of the electrode block of the second electromagnetic electrode on the first insulating layer lies within the orthographic projection of the electrode block of the first touch electrode on the first insulating layer.

[0024] In one possible implementation, the touch electrode includes a plurality of touch electrode blocks configured to perform self-capacitance touch detection, wherein the orthographic projections of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer are interwoven in a mesh structure with gaps, and the orthographic projections of the touch electrode blocks on the first insulating layer are located in the gaps and offset from the orthographic projections of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer.

[0025] This application also provides an electronic device, which includes a display panel and the touch module provided in this application. Compared with the prior art, this application has the following advantages: The touch film assembly and electronic device provided in this application can reduce the overlap area of ​​the touch electrodes and electromagnetic electrodes that extend in the same direction by staggering the touch electrodes and electromagnetic electrodes, thereby reducing the impact of the electromagnetic electrodes on the detection accuracy and load of the touch electrodes. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is one of the schematic diagrams of the film layer of the touch module provided in this embodiment; Figure 2 This is one of the electrode arrangement diagrams of the touch module provided in this embodiment; Figure 3 This is the second schematic diagram of the film layer of the touch module provided in this embodiment; Figure 4 This is the third schematic diagram of the film layer of the touch module provided in this embodiment; Figure 5 This is the second schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 6 This is the fourth schematic diagram of the film layer of the touch module provided in this embodiment; Figure 7 This is the third schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 8 This is the fourth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 9 This is the fifth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 10 This is the sixth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 11 This is the seventh schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 12 This is the eighth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 13 This is the ninth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 14 This is the tenth schematic diagram of the electrode arrangement of the touch module provided in this embodiment; Figure 15 This is eleventh of the schematic diagrams showing the electrode arrangement of the touch module provided in this embodiment; Figure 16 This is the twelfth schematic diagram of the electrode arrangement of the touch module provided in this embodiment.

[0028] Icons: 11-First coil trace layer; 12-Second coil trace layer; 31-First insulating layer; 21-First touch trace layer; 22-Second touch trace layer; 13-Second insulating layer; 23-Third insulating layer; 110-First electromagnetic electrode; 120-Second electromagnetic electrode; 210-First touch electrode; 220-Second touch electrode; 211-Touch electrode block; 212-Second bridging wire; 111-Coil electrode block; 112-First bridging wire; 10-Electromagnetic coil functional film layer; 20-Touch functional film layer; D1-First direction; D2-Second direction; 910-First electromagnetic coil detection and driving circuit; 920-Second electromagnetic coil detection and driving circuit; 40-Bridging trace layer. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0034] The inventors discovered that in touch modules equipped with electromagnetic coils, the electromagnetic coil electrodes inevitably overlap with the touch electrodes, which may cause signal coupling between the electromagnetic coil electrodes and the touch electrodes, affecting the detection sensitivity or load of the touch electrodes.

[0035] In view of this, this embodiment provides a solution that can reduce the influence of electromagnetic coils on touch electrodes. The solution provided in this embodiment will be described in detail below.

[0036] This embodiment provides a touch module; please refer to... Figure 1 The touch module includes an electromagnetic coil functional film layer 10, a first insulating layer 31, and a touch functional film layer 20, which are stacked together.

[0037] The touch-sensitive functional film layer 20 includes touch electrodes. The electromagnetic coil functional film layer 10 includes a first electromagnetic electrode extending along a first direction and a second electromagnetic electrode extending along a second direction, the first direction intersecting the second direction.

[0038] Specifically, the orthographic projection of at least one of the first and second electromagnetic electrodes onto the first insulating layer 31 is offset from the orthographic projection of the touch electrode onto the first insulating layer 31. That is, the orthographic projection of at least one of the first and second electromagnetic electrodes onto the first insulating layer 31 does not completely coincide with the orthographic projection of the touch electrode onto the first insulating layer 31.

[0039] In this way, by staggering the touch electrodes and electromagnetic electrodes, the overlapping area of ​​the touch electrodes and electromagnetic electrodes extending in the same direction can be reduced, thereby reducing the impact of the electromagnetic electrodes on the detection accuracy and load of the touch electrodes.

[0040] In one possible implementation, the touch electrode may include a plurality of touch electrode blocks configured to perform self-capacitive touch detection, wherein the orthographic projections of a first electromagnetic electrode extending in a first direction and a second electromagnetic electrode extending in a second direction on the first insulating layer 31 are interwoven to form a mesh structure with gaps, and the orthographic projections of the touch electrode blocks on the first insulating layer 31 are located in the gaps and are offset from the orthographic projections of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer 31.

[0041] For example, the orthographic projections of the first electromagnetic electrode extending along the first direction and the second electromagnetic electrode extending along the second direction on the first insulating layer 31 are interwoven to form a mesh structure with multiple holes, and the orthographic projection of the touch electrode block on the first insulating layer 31 at least partially overlaps with the mesh of the mesh structure.

[0042] In another possible implementation, the touch electrode includes a first touch electrode extending along a first direction and a second touch electrode extending along a second direction.

[0043] The electromagnetic coil functional film layer includes a first electromagnetic electrode extending along a first direction and a second electromagnetic electrode extending along a second direction. The first direction and the second direction intersect.

[0044] The projection of the first touch electrode onto the first insulating layer 31 is offset from the projection of the first electromagnetic electrode onto the first insulating layer 31, and the projection of the second touch electrode onto the first insulating layer 31 is offset from the projection of the second electromagnetic electrode onto the first insulating layer 31.

[0045] That is, the orthographic projection of the first touch electrode on the first insulating layer 31 does not completely overlap with the orthographic projection of the first electromagnetic electrode on the first insulating layer 31, and the orthographic projection of the second touch electrode on the first insulating layer 31 does not completely overlap with the orthographic projection of the second electromagnetic electrode on the first insulating layer 31.

[0046] Optionally, the orthographic projection of the first touch electrode on the first insulating layer 31 does not overlap with the orthographic projection of the first electromagnetic electrode on the first insulating layer 31, and the orthographic projection of the second touch electrode on the first insulating layer 31 does not overlap with the orthographic projection of the second electromagnetic electrode on the first insulating layer 31.

[0047] Thus, by staggering the unidirectionally extending touch electrodes and electromagnetic electrodes, the overlapping area of ​​the unidirectionally extending touch electrodes and electromagnetic electrodes can be reduced, thereby reducing the impact of the electromagnetic electrodes on the detection accuracy and load of the touch electrodes.

[0048] Specifically, among some possible implementations, please refer to Figure 2 Multiple second touch electrodes 220 are spaced apart along a first direction D1. The first touch electrode 210 includes multiple touch electrode blocks 211 arranged along the first direction D1. Adjacent touch electrode blocks 211 within the same first touch electrode 210 are electrically connected via a second bridging wire 212. The orthographic projection of the second bridging wire 212 on the first insulating layer 31 at least partially coincides with the orthographic projection of the second touch electrode 220 on the first insulating layer 31.

[0049] Multiple second electromagnetic electrodes 120 are spaced apart along a first direction D1. The first electromagnetic electrode 110 includes multiple coil electrode blocks 111 arranged along the first direction D1. Adjacent coil electrode blocks 111 in the same first electromagnetic electrode 110 are electrically connected by a first bridging wire 112. The orthographic projection of the first bridging wire 112 on the first insulating layer 31 at least partially coincides with the orthographic projection of the second electromagnetic electrode 120 on the first insulating layer 31.

[0050] Furthermore, the orthographic projection of the touch electrode block 211 on the first insulating layer 31 lies between the orthographic projections of the adjacent second touch electrode 220 on the first insulating layer 31. The orthographic projection of the second touch electrode 220 on the first insulating layer 31 at least partially overlaps with the orthographic projection of the second bridging wire 212 on the first insulating layer 31.

[0051] The orthographic projection of the coil electrode block 111 on the first insulating layer 31 lies between the orthographic projections of the adjacent second electromagnetic electrode 120 on the first insulating layer 31. The orthographic projection of the second electromagnetic electrode 1220 on the first insulating layer 31 at least partially coincides with the orthographic projection of the first bridging wire 112 on the first insulating layer 31.

[0052] Correspondingly, the orthographic projection of the touch electrode block 211 on the first insulating layer 31 at least partially overlaps with the orthographic projection of the second electromagnetic electrode 120 on the first insulating layer 31. The orthographic projection of the coil electrode block 111 on the first insulating layer 31 at least partially overlaps with the orthographic projection of the second touch electrode 220 on the first insulating layer 31.

[0053] Preferably, in the second direction D2, the touch electrode blocks 211 are spaced apart, and the orthographic projection of the touch electrode blocks 211 on the first insulating layer 31 overlaps at least partially with the orthographic projection of the second electromagnetic electrode 120 extending along the second direction D2 on the first insulating layer 31.

[0054] In the second direction D2, the coil electrode blocks 111 are spaced apart, and the orthographic projection of the coil electrode blocks 111 on the first insulating layer 31 at least partially overlaps with the orthographic projection of the second touch electrode 220 extending along the second direction D2 on the first insulating layer 31.

[0055] Furthermore, the orthographic projection of the coil electrode block 111 on the first insulating layer 31 is located between the orthographic projections of two adjacent touch electrode blocks 211 on the first insulating layer 31 in the first direction D1, and the orthographic projection of the touch electrode block 211 on the first insulating layer 31 is also located between the orthographic projections of two adjacent coil electrode blocks 111 on the first insulating layer in the first direction D1.

[0056] That is, in the first direction D1, the orthographic projections of multiple coil electrode blocks 111 on the first insulating layer 31 and the orthographic projections of multiple touch electrode blocks 211 on the first insulating layer 31 are alternately arranged; in the first direction D1, the orthographic projections of multiple second touch electrodes 220 on the first insulating layer 31 and the orthographic projections of multiple second electromagnetic electrodes 120 on the first insulating layer 31 are alternately arranged.

[0057] Based on this, in some examples, the first touch electrode 210 and the second touch electrode 220 can be located on different touch trace layers. The first electromagnetic electrode 110 and the second electromagnetic electrode 120 can be located on different coil trace layers.

[0058] For example, please refer to Figure 3 The electromagnetic coil functional film layer 10 includes a first coil trace layer 11, a second coil trace layer 12, and a second insulating layer 13 located between the first coil trace layer 11 and the second coil trace layer 12. The touch functional film layer 20 may include a first touch trace layer 21, a second touch trace layer 22, and a third insulating layer 23 located between the first touch trace layer 21 and the second touch trace layer 22. The first insulating layer 31 may be located between the second coil trace layer 12 and the first touch trace layer 21.

[0059] The first touch electrode 210 and the second touch electrode 220 can be located in the first touch wiring layer 21 and the second touch wiring layer 22, respectively. The first electromagnetic electrode 110 and the second electromagnetic electrode 120 can be located in the first coil wiring layer 11 and the second coil wiring layer 12, respectively.

[0060] In other examples, the touch electrode block 211 of the first touch electrode 210 and the second touch electrode 220 can be disposed in the same layer. For example, the touch functional film layer includes a first touch wiring layer. The touch electrode block 211 of the first touch electrode 210 and the second touch electrode 220 are located in the first touch wiring layer 21, and the second bridging line 212 is located in other film layers besides the first touch wiring layer. In this way, the first touch electrode 210 and the second touch electrode 220 can be located in the same touch wiring layer, thereby improving the mutual capacitance detection performance between the touch electrodes and enhancing the sensitivity of touch detection.

[0061] For example, in some cases, please refer to Figure 4 The touch function film layer 20 includes a first touch trace layer 21, and the electromagnetic coil function film layer 10 includes a first coil trace layer 11, a second coil trace layer 12, and a second insulating layer 13 located between the first coil trace layer 11 and the second coil trace layer 12.

[0062] The coil electrode block 111 and the first bridge wire 112 are located on the first coil trace layer 11, and the second electromagnetic electrode 120 and the second bridge wire 212 are located on the second coil trace layer 12. Figure 5 As shown. Optionally, the touch function film layer 20 is located on the side of the second coil trace layer 12 away from the first coil trace layer 11. In this way, the overall number of film layers in the touch module can be reduced, the product thickness can be reduced, and manufacturing efficiency can be improved.

[0063] In other examples, please refer to Figure 6 The touch function film layer 20 includes a first touch wiring layer 21, with the touch electrode block 211 of the first touch electrode 210 and the second touch electrode 220 located in the first touch wiring layer 21. The electromagnetic coil function film layer 10 includes a first coil wiring layer 11, with the coil electrode block 111 of the first electromagnetic electrode 110 and the second electromagnetic electrode 120 located in the first coil wiring layer 11.

[0064] The touch module also includes a bridging trace layer 40 located between the touch function film layer 20 and the electromagnetic coil function film layer 10. The first insulating layer 31 includes a first sub-layer 311 located between the bridging trace layer 40 and the first touch trace layer 21, and a second sub-layer 312 located between the bridging trace layer 40 and the first coil trace layer 11. The first bridging wire 112 and the second bridging wire 212 are located in the bridging trace layer. That is, the touch electrode block 211 and the second touch electrode 220 of the first touch electrode 210 are arranged in the same layer, the coil electrode block 111 and the second electromagnetic electrode 120 of the first electromagnetic electrode 110 are arranged in the same layer, and the first bridging wire 112 and the second bridging wire 212 are arranged in the same layer.

[0065] In some possible implementations, to avoid the electromagnetic electrodes affecting the planar capacitance between the touch electrodes, it is necessary to avoid overlapping between the electromagnetic electrodes and the touch electrodes.

[0066] Please refer to this again. Figure 5 The width W1 of the coil electrode block 111 in the first direction D1 is less than the width W2 of the second touch electrode 220 in the first direction D1; and / or, the width W3 of the second electromagnetic electrode 120 in the first direction D1 is less than the width W4 of the touch electrode block 211 in the first direction D1.

[0067] Preferably, in the first direction D1, the orthographic projection of the coil electrode block 111 onto the first insulating layer 31 does not exceed the orthographic projection of the second touch electrode 220 onto the first insulating layer 31. Also in the first direction D1, the orthographic projection of the second electromagnetic electrode 120 onto the first insulating layer 31 does not exceed the orthographic projection of the touch electrode block 211 onto the first insulating layer 31. This avoids overlap between the electrode blocks of the electromagnetic electrode and the electrode blocks of the touch electrode.

[0068] In some possible implementations, the second electromagnetic electrode 120 and the touch electrode block 211 are composed of a grid, and at the overlap position of the second electromagnetic electrode 120 and the touch electrode block 211, the grid density of the second electromagnetic electrode 120 is different from that of the touch electrode block 211. For example, at the overlap position, the grid density of the second electromagnetic electrode 120 is greater than that of the touch electrode block 211, and vice versa. In this way, the area of ​​overlap between the grid of the second electromagnetic electrode 120 and the grid lines of the touch electrode block 211 can be reduced, thereby reducing the influence of the second electromagnetic electrode 120 on the first touch electrode 210.

[0069] In some possible implementations, the coil electrode block 111 and the second touch electrode 220 are composed of a grid, and the grid density of the coil electrode block 111 and the second touch electrode 220 is different at the overlapping position. For example, at the overlapping position, the grid density of the coil electrode block 111 is greater than the grid density of the second touch electrode 220, or the grid density of the coil electrode block 111 is less than the grid density of the second touch electrode 220. In this way, the area of ​​overlap between the grid of the coil electrode block 111 and the grid lines of the second touch electrode 220 can be reduced, thereby reducing the influence of the first electromagnetic electrode 110 on the second touch electrode 220.

[0070] Furthermore, in some examples, the second electromagnetic electrode 120 includes at least two regions with different grid densities, and the touch electrode block 211 includes at least two regions with different grid densities.

[0071] In particular, the orthographic projection of the region with higher grid density in the second electromagnetic electrode 120 onto the first insulating layer 31 at least partially overlaps with the orthographic projection of the region with lower grid density in the touch electrode block 211 onto the first insulating layer 31.

[0072] For example, please refer to Figure 7 In the first direction D1, the grid density in the middle region of the second electromagnetic electrode 120 can be greater than the grid density on both sides, while the grid density in the middle region of the touch electrode block 211 can be less than the grid density on both sides; or, please refer to Figure 8 In the first direction D1, the grid density in the middle region of the second electromagnetic electrode 120 can be less than the grid density on both sides, while the grid density in the middle region of the touch electrode block 211 can be greater than the grid density on both sides.

[0073] That is, the areas with high grid density on the second electromagnetic electrode 120 overlap with the areas with low grid density on the touch electrode block 211, and vice versa. This reduces the area of ​​overlap between the grid lines of the coil electrode block 111 and the second touch electrode 220, while ensuring that the first electromagnetic electrode 110 has a certain proportion of high-density grid in the second touch electrode 220, thus avoiding excessive resistance due to too many low-density grids.

[0074] Furthermore, please see again Figure 7 The areas with higher grid density in the touch electrode block 211 are closer to the second touch electrode 220 than the areas with lower grid density in the touch electrode block 211. Thus, the higher-density grid in the first touch electrode 210 is closer to the second touch electrode 220, which can improve the sensitivity of mutual capacitance detection between the first touch electrode 210 and the second touch electrode 220.

[0075] In other examples, the coil electrode block 111 includes at least two regions with different grid densities, and the second touch electrode 220 includes at least two regions with different grid densities.

[0076] The orthographic projection of the region with higher grid density in the coil electrode block 111 onto the first insulating layer 31 at least partially overlaps with the orthographic projection of the region with lower grid density in the second touch electrode 220 onto the first insulating layer 31.

[0077] For example, please refer to Figure 9 In the first direction D1, the grid density in the middle region of the coil electrode block 111 can be greater than the grid density on both sides, while the grid density in the middle region of the second touch electrode 220 can be less than the grid density on both sides; or, please refer to Figure 10 In the first direction D1, the grid density in the middle region of the coil electrode block 111 can be less than the grid density on both sides, while the grid density in the middle region of the second touch electrode 220 can be greater than the grid density on both sides.

[0078] That is, the areas with high grid density in the coil electrode block 111 overlap with the areas with low grid density in the second touch electrode 220, and vice versa. This reduces the area of ​​overlap between the grid lines of the coil electrode block 111 and the second touch electrode 220, while ensuring that the first electromagnetic electrode 110 has a certain proportion of high-density grid in the second touch electrode 220, thus avoiding excessive resistance due to too many low-density grids.

[0079] Furthermore, please refer to again Figure 9 The areas with higher grid density in the second touch electrode 220 are closer to the touch electrode block 211 than the areas with lower grid density in the second touch electrode 220. Thus, the higher-density grid in the second touch electrode 220 is closer to the first touch electrode 210, which can improve the sensitivity of mutual capacitance detection between the first touch electrode 210 and the second touch electrode 220.

[0080] It should be noted that, in this embodiment, Figure 7 and Figure 8 The scheme shown can be compared with Figure 9 and Figure 10 The schemes shown are combined in various ways, and will not be described in detail in this embodiment.

[0081] In some other examples, the grid density of the second electromagnetic electrode 120 may be generally lower than the grid density of the touch electrode block 211; and / or, the grid density of the coil electrode block 111 may be generally lower than the grid density of the second touch electrode 220. Thus, prioritizing a higher grid density for the touch electrode ensures the accuracy of touch detection.

[0082] In some possible implementations, the touch surface of the touch module can be rectangular, with the first direction D1 being the extension direction of the short side of the touch film assembly and the second direction D2 being the extension direction of the long side of the touch film assembly. In this case, the overall extension length of the second touch electrode 220 extending along the second direction D2 is greater than the overall extension length of the first touch electrode 210 extending along the first direction D1. To reduce the overall resistance difference between the first touch electrode 210 and the second touch electrode 220 caused by the length difference, in this embodiment, both the touch electrode block 211 and the second touch electrode 220 can be composed of a grid, and the grid density of the second touch electrode 220 is greater than the grid density of the touch electrode block.

[0083] exist Figure 2 or Figure 5 Based on the scheme shown, please refer to the following for possible implementation methods. Figure 11 Two or more first electromagnetic electrodes 110 can be connected in parallel at both ends to form a first electromagnetic electrode group.

[0084] Accordingly, please refer to Figure 12 Two or more second electromagnetic electrodes 120 are connected in parallel at both ends to form a second electromagnetic electrode group.

[0085] For some possible implementations, please refer to Figure 13 Two adjacent first electromagnetic electrode groups can be connected together at one end, and their other ends can be connected to the first electromagnetic coil detection drive circuit 910 respectively, thereby forming a first closed coil detection loop. In addition, the ends of each first electromagnetic electrode 110 that are away from the connection with the first electromagnetic coil detection drive circuit 910 can be connected together.

[0086] Preferably, the two ends of three adjacent first electromagnetic electrodes 110 can be connected in parallel to form a first electromagnetic electrode group. Then, one end of two adjacent first electromagnetic electrode groups can be connected together, and the other end can be connected to the first electromagnetic coil detection drive circuit 910 to form a closed coil detection loop.

[0087] Accordingly, please refer to Figure 14 One end of two adjacent second electromagnetic electrode groups can be connected together, and the other end can be connected to the second electromagnetic coil detection drive circuit 920 respectively, thereby forming a closed coil detection loop. In addition, the ends of each second electromagnetic electrode 120 that are away from the connection with the second electromagnetic coil detection drive circuit 920 can be connected together.

[0088] Preferably, the two ends of three adjacent second electromagnetic electrodes 120 can be connected in parallel to form a second electromagnetic electrode group. Then, one end of two adjacent second electromagnetic electrode groups can be connected together, and the other end can be connected to the second electromagnetic coil detection drive circuit 920 respectively, thereby forming a closed coil detection loop.

[0089] This embodiment also provides a touch module, which includes an electromagnetic coil functional film layer 10, a first insulating layer 31 and a touch functional film layer 20 stacked together.

[0090] Please refer to Figure 15 The touch-sensitive functional film layer 20 includes touch electrodes, which include a strip-shaped first touch electrode 210 extending along a first direction D1 and a strip-shaped second touch electrode 220 extending along a second direction D2. The electromagnetic coil functional film layer 10 includes a strip-shaped first electromagnetic electrode 110 extending along the first direction D1 and a second electromagnetic electrode 120 extending along the second direction D2.

[0091] For example, please refer to again Figure 3 The electromagnetic coil functional film layer 10 includes a first coil trace layer 11, a second coil trace layer 12, and a second insulating layer 13 located between the first coil trace layer 11 and the second coil trace layer 12. The touch functional film layer 20 may include a first touch trace layer 21, a second touch trace layer 22, and a third insulating layer 23 located between the first touch trace layer 21 and the second touch trace layer 22. The first insulating layer 31 may be located between the second coil trace layer 12 and the first touch trace layer 21.

[0092] The electromagnetic coil functional film layer 10 includes a first coil trace layer 11, a second coil trace layer 12, and a second insulating layer 13 located between the first coil trace layer 11 and the second coil trace layer 12. The touch functional film layer 20 may include a first touch trace layer 21, a second touch trace layer 22, and a third insulating layer 23 located between the first touch trace layer 21 and the second touch trace layer 22. The first insulating layer 31 may be located between the second coil trace layer 12 and the first touch trace layer 21.

[0093] The first coil trace layer 11 may include a plurality of strip-shaped first electromagnetic electrodes 110 extending along a first direction D1, with the plurality of first electromagnetic electrodes 110 spaced apart. The second coil trace layer 12 may include a plurality of strip-shaped second electromagnetic electrodes 120 extending along a second direction D2, with the plurality of second electromagnetic electrodes 120 spaced apart.

[0094] The first touch wiring layer 21 may include a plurality of strip-shaped first touch electrodes 210 extending along a first direction D1, with the plurality of first touch electrodes 210 spaced apart. The second touch wiring layer 22 may include a plurality of strip-shaped second touch electrodes 220 extending along a second direction D2, with the plurality of second touch electrodes 220 spaced apart.

[0095] The orthographic projection of the first touch electrode 210 on the first insulating layer 31 is offset from the orthographic projection of the first electromagnetic electrode 110 on the first insulating layer 31. For example, the orthographic projection of the first touch electrode 210 on the first insulating layer 31 is located between the orthographic projections of the adjacent first electromagnetic electrodes 110 on the first insulating layer 31, and the orthographic projection of the first electromagnetic electrodes 110 on the first insulating layer 31 is also located between the orthographic projections of the adjacent first touch electrodes 210 on the first insulating layer 31.

[0096] The orthographic projection of the second touch electrode 220 on the first insulating layer 31 is offset from the orthographic projection of the second electromagnetic electrode 120 on the first insulating layer 31. For example, the orthographic projection of the second touch electrode 220 on the first insulating layer 31 is located between the orthographic projections of adjacent second electromagnetic electrodes 120 on the first insulating layer 31, and the orthographic projection of the second electromagnetic electrode 120 on the first insulating layer 31 is also located between the orthographic projections of adjacent second touch electrodes 220 on the first insulating layer 31.

[0097] This embodiment also provides a touch module, please refer to... Figure 16 ,and Figure 15 The difference in the illustrated scheme is that the first electromagnetic electrode 110, the second electromagnetic electrode 120, the first touch electrode 210, and the second touch electrode 220 can also be formed by connecting multiple rhomboid electrode blocks arranged along their respective extension directions through bridging wires. Specifically, the orthographic projection of the electrode block of the first touch electrode 210 onto the first insulating layer 31 lies between the orthographic projections of the electrode blocks of the first electromagnetic electrode 110 onto the first insulating layer 31, and the orthographic projection of the electrode block of the second touch electrode 220 onto the first insulating layer 31 lies between the orthographic projections of the electrode blocks of the second electromagnetic electrode 120 onto the first insulating layer 31. The orthographic projections of the electrode blocks of the first touch electrode 210 onto the first insulating layer 31 can overlap with the orthographic projections of the electrode blocks of the second electromagnetic electrode 120 onto the first insulating layer 31, and the orthographic projections of the electrode blocks of the second touch electrode 220 onto the first insulating layer 31 can overlap with the orthographic projections of the electrode blocks of the first electromagnetic electrode 110 onto the first insulating layer 31.

[0098] exist Figure 16Based on the scheme shown, in some examples, the first electromagnetic electrode 110 and the second electromagnetic electrode 120 may be located on different coil trace layers; or, the electrode block of the first electromagnetic electrode 110 and the electrode block of the second electromagnetic electrode 120 may be located on the same coil trace layer, and one of the bridging wires of the first electromagnetic electrode 110 and the second electromagnetic electrode 120 may be located on another trace layer.

[0099] exist Figure 16 Based on the illustrated scheme, in some examples, the first touch electrode 210 and the second touch electrode 220 can be located on different touch routing layers. In other examples, the electrode blocks of the first touch electrode 210 and the second touch electrode 220 can be located on the same touch routing layer, and one of the bridging lines of the first touch electrode 210 and the second touch electrode 220 can be located on another routing layer.

[0100] Furthermore, if the electrode blocks of the first electromagnetic electrode 110 and the second electromagnetic electrode 120 are located in the same coil trace layer, and the electrode blocks of the first touch electrode 210 and the second touch electrode 220 are located in the same touch trace layer, then one of the bridging wires of the first touch electrode 210 and the second touch electrode 220 can be located in a bridging trace layer, and one of the bridging wires of the first electromagnetic electrode 110 and the second electromagnetic electrode 120 can also be located in the bridging trace layer.

[0101] In some possible implementations, to avoid the electromagnetic electrodes affecting the planar capacitance between the touch electrodes, it is necessary to avoid overlapping between the electromagnetic electrodes and the touch electrodes.

[0102] Specifically, in Figure 16 Based on the illustrated scheme, the orthographic projection of the first electromagnetic electrode 110 on the first insulating layer 31 lies within the orthographic projection of the second touch electrode 220 on the first insulating layer 31, and the orthographic projection of the second electromagnetic electrode 120 on the first insulating layer 31 lies within the orthographic projection of the first touch electrode 210 on the first insulating layer 31. That is, the electrode blocks of the first electromagnetic electrode 110 and the second touch electrode 220 overlap, and the area of ​​the electrode block of the first electromagnetic electrode 110 is smaller than the area of ​​the electrode block of the second touch electrode 220. Similarly, the electrode blocks of the second electromagnetic electrode 120 and the first touch electrode 210 overlap, and the area of ​​the electrode block of the second electromagnetic electrode 120 is smaller than the area of ​​the electrode block of the first touch electrode 210. This avoids overlapping gaps between the electrode blocks of the electromagnetic electrodes and the electrode blocks of the touch electrodes.

[0103] In some possible implementations, Figure 16Based on the scheme shown, the grid density at the center of the electrode block of the first electromagnetic electrode 110 can be less than the grid density at the periphery, while the grid density at the center of the electrode block of the second touch electrode 220 can be greater than the grid density at the periphery; or, the grid density at the center of the electrode block of the first electromagnetic electrode 110 can be greater than the grid density at the periphery, while the grid density at the center of the electrode block of the second touch electrode 220 can be less than the grid density at the periphery.

[0104] In some examples, the grid density at the center of the electrode block of the second electromagnetic electrode 120 may be less than the grid density at the periphery, while the grid density at the center of the electrode block of the first touch electrode 210 may be greater than the grid density at the periphery; or, the grid density at the center of the electrode block of the second electromagnetic electrode 120 may be greater than the grid density at the periphery, while the grid density at the center of the electrode block of the first touch electrode 210 may be less than the grid density at the periphery.

[0105] In order to improve the sensitivity of mutual capacitance detection between the first touch electrode 210 and the second touch electrode 220, the grid density at the center of the electrode block of the first touch electrode 210 and / or the electrode block of the second touch electrode 220 can be set to be less than the grid density at the periphery.

[0106] This embodiment also provides an electronic device, which includes a display panel and a touch module provided in this embodiment.

[0107] In some possible implementations, the touch module provided in this embodiment can be formed on the display panel. For example, after the display panel is fabricated, an electromagnetic coil functional film layer 10, a first insulating layer 31, and a touch functional film layer 20 are sequentially formed on the light-emitting surface of the display panel. In addition, a protective layer can be formed on the side of the touch functional film layer 20 away from the display panel.

[0108] In other possible implementations, the touch module provided in this embodiment can also be fabricated separately and then attached to the light-emitting surface of the display panel. To prevent the electromagnetic coil functional film layer 10 from shielding the touch functional film layer 20 from touch detection, the touch functional film layer 20 is located on the side furthest from the display panel relative to the electromagnetic coil functional film layer 10.

[0109] In some other possible implementations, the electromagnetic coil functional film layer 10 and the first insulating layer 31 can also be integrated into the display panel, formed by the wiring layer or insulating layer of the array substrate of the display panel, and the touch functional film layer 20 can be formed on the light-emitting surface of the display panel.

[0110] In summary, the touch film assembly and electronic device provided in this application, by staggering the touch electrodes and electromagnetic electrodes, can reduce the overlapping area of ​​the touch electrodes and electromagnetic electrodes that extend in the same direction, thereby reducing the impact of the electromagnetic electrodes on the detection accuracy and load of the touch electrodes.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A touch module, characterized in that, The touch module includes an electromagnetic coil functional film layer, a first insulating layer and a touch functional film layer stacked together. The touch-sensitive functional film layer includes touch electrodes; The electromagnetic coil functional film layer includes a first electromagnetic electrode extending along a first direction and a second electromagnetic electrode extending along a second direction; the first direction intersects the second direction; Wherein, the orthographic projection of at least one of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer is offset from the orthographic projection of the touch electrode on the first insulating layer; The touch electrode includes a first touch electrode extending along the first direction and a second touch electrode extending along the second direction; wherein, the orthographic projection of the first touch electrode on the first insulating layer is offset from the orthographic projection of the first electromagnetic electrode on the first insulating layer, and the orthographic projection of the second touch electrode on the first insulating layer is offset from the orthographic projection of the second electromagnetic electrode on the first insulating layer. A plurality of second touch electrodes are spaced apart along the first direction; the first touch electrode includes a plurality of touch electrode blocks arranged along the first direction, and adjacent touch electrode blocks in the same first touch electrode are electrically connected by a second bridging wire, and the orthographic projection of the second bridging wire on the first insulating layer at least partially overlaps with the orthographic projection of the second touch electrode on the first insulating layer; A plurality of second electromagnetic electrodes are spaced apart along the first direction; the first electromagnetic electrode includes a plurality of coil electrode blocks arranged along the first direction, and adjacent coil electrode blocks in the same first electromagnetic electrode are electrically connected by a first bridging wire, and the orthographic projection of the first bridging wire on the first insulating layer at least partially overlaps with the orthographic projection of the second electromagnetic electrode on the first insulating layer; The orthographic projection of the touch electrode block on the first insulating layer overlaps at least partially with the orthographic projection of the second electromagnetic electrode on the first insulating layer; the orthographic projection of the coil electrode block on the first insulating layer overlaps at least partially with the orthographic projection of the second touch electrode on the first insulating layer. The second electromagnetic electrode and the touch electrode block are composed of a grid. At the overlapping position of the second electromagnetic electrode and the touch electrode block, the grid density of the second electromagnetic electrode and the grid density of the touch electrode block are different. And / or, the coil electrode block and the second touch electrode are composed of a grid, and at the overlapping position of the coil electrode block and the second touch electrode, the grid density of the coil electrode block and the grid density of the second touch electrode are different.

2. The touch module according to claim 1, characterized in that, The orthographic projection of the touch electrode block on the first insulating layer is located between the orthographic projections of the adjacent second touch electrode on the first insulating layer; The orthographic projection of the coil electrode block on the first insulating layer lies between the orthographic projections of the adjacent second electromagnetic electrode on the first insulating layer.

3. The touch module according to claim 1, characterized in that, The orthographic projection of the touch electrode block on the first insulating layer is located between the orthographic projections of two adjacent coil electrode blocks on the first insulating layer in the first direction; The orthographic projection of the second touch electrode on the first insulating layer is located between the orthographic projections of two adjacent second electromagnetic electrodes on the first insulating layer.

4. The touch module according to claim 1, characterized in that, The touch function film layer includes a first touch trace layer, the touch electrode block of the first touch electrode and the second touch electrode are located in the first touch trace layer, and the second bridging line is located in other film layers other than the first touch trace layer.

5. The touch module according to claim 4, characterized in that, The electromagnetic coil functional film layer includes a first coil trace layer, a second coil trace layer, and a second insulating layer located between the first coil trace layer and the second coil trace layer; The coil electrode block and the first bridging wire are located in the first coil trace layer, and the second electromagnetic electrode and the second bridging wire are located in the second coil trace layer.

6. The touch module according to claim 5, characterized in that, The touch-sensitive functional film layer is located on the side of the second coil trace layer away from the first coil trace layer.

7. The touch module according to claim 4, characterized in that, The electromagnetic coil functional film layer includes a first coil trace layer; the coil electrode block of the first electromagnetic electrode and the second electromagnetic electrode are located in the first coil trace layer; The touch module further includes a bridging trace layer located between the touch function film layer and the electromagnetic coil function film layer; the first bridging wire and the second bridging wire are located in the bridging trace layer.

8. The touch module according to claim 1, characterized in that, In the second direction, the touch electrode blocks are spaced apart, and the orthographic projection of the touch electrode blocks on the first insulating layer overlaps at least partially with the orthographic projection of the second electromagnetic electrode extending along the second direction on the first insulating layer. In the second direction, the coil electrode blocks are spaced apart, and the orthographic projection of the coil electrode blocks on the first insulating layer at least partially overlaps with the orthographic projection of the second touch electrode extending along the second direction on the first insulating layer.

9. The touch module according to claim 8, characterized in that, The width of the coil electrode block in the first direction is less than the width of the second touch electrode in the first direction; and / or, the width of the second electromagnetic electrode in the first direction is less than the width of the touch electrode block in the first direction.

10. The touch module according to claim 9, characterized in that, In the first direction, the orthographic projection of the coil electrode block onto the first insulating layer does not exceed the orthographic projection of the second touch electrode onto the first insulating layer; and / or, in the first direction, the orthographic projection of the second electromagnetic electrode onto the first insulating layer does not exceed the orthographic projection of the touch electrode block onto the first insulating layer.

11. The touch module according to claim 1, characterized in that, The second electromagnetic electrode includes at least two regions with different grid densities, and the touch electrode block includes at least two regions with different grid densities.

12. The touch module according to claim 11, characterized in that, The orthographic projection of the region with higher grid density in the second electromagnetic electrode onto the first insulating layer at least partially overlaps with the orthographic projection of the region with lower grid density in the touch electrode block onto the first insulating layer.

13. The touch module according to claim 12, characterized in that, The areas with higher grid density in the touch electrode block are closer to the second touch electrode than the areas with lower grid density in the touch electrode block.

14. The touch module according to claim 1, characterized in that, The coil electrode block includes at least two regions with different grid densities, and the second touch electrode includes at least two regions with different grid densities.

15. The touch module according to claim 14, characterized in that, The orthographic projection of the region with higher grid density in the coil electrode block onto the first insulating layer at least partially overlaps with the orthographic projection of the region with lower grid density in the second touch electrode onto the first insulating layer.

16. The touch module according to claim 15, characterized in that, The area with higher grid density in the second touch electrode is closer to the touch electrode block than the area with lower grid density in the second touch electrode.

17. The touch module according to claim 1, characterized in that, The grid density of the second electromagnetic electrode is generally smaller than that of the touch electrode block; And / or, the grid density of the coil electrode block is generally smaller than the grid density of the second touch electrode.

18. The touch module according to claim 1, characterized in that, The touch electrode block and the second touch electrode are composed of a grid, and the grid density of the second touch electrode is greater than that of the touch electrode block.

19. The touch module according to claim 1, characterized in that, Two or more adjacent first electromagnetic electrodes are connected in parallel at both ends along the second direction to form a first electromagnetic electrode group; two adjacent first electromagnetic electrode groups are connected at one end and the other end is respectively connected to a first electromagnetic coil detection drive circuit to form a first closed coil detection loop. Two or more adjacent second electromagnetic electrodes are connected in parallel at both ends along the first direction to form a second electromagnetic electrode group; two adjacent second electromagnetic electrode groups are connected at one end and the other end is respectively connected to the second electromagnetic coil detection drive circuit to form a second closed coil detection loop.

20. The touch module according to claim 1, characterized in that, The first electromagnetic electrode, the second electromagnetic electrode, the first touch electrode, and the second touch electrode are formed by connecting a plurality of rhomboid electrode blocks arranged along their respective extension directions through bridging wires; the orthographic projection of the electrode block of the first electromagnetic electrode on the first insulating layer is located within the orthographic projection of the electrode block of the second touch electrode on the first insulating layer; the orthographic projection of the electrode block of the second electromagnetic electrode on the first insulating layer is located within the orthographic projection of the electrode block of the first touch electrode on the first insulating layer.

21. The touch module according to claim 1, characterized in that, The touch electrode includes a plurality of touch electrode blocks configured to perform self-capacitance touch detection. The orthographic projections of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer are interwoven into a mesh structure with gaps. The orthographic projections of the touch electrode blocks on the first insulating layer are located in the gaps and are offset from the orthographic projections of the first electromagnetic electrode and the second electromagnetic electrode on the first insulating layer.

22. An electronic device, characterized in that, The electronic device includes a display panel and a touch module as described in any one of claims 1-21.

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