Touch module, display panel and display device

Abstract

The invention discloses a touch module, a display panel and a display device. The touch module comprises a substrate; the touch electrode layer comprises a plurality of touch electrode repeating units; an electromagnetic coil layer; the touch electrode layer and the electromagnetic coil layer are arranged on one side of the substrate; the touch electrode layer and the electromagnetic coil layer are of a grid wiring structure, each touch electrode repeating unit comprises a plurality of first electrode patterns and second electrode patterns, and the second electrode patterns in the grid wiring density are smaller than the first electrode patterns; the electromagnetic coil layer comprises a plurality of third electrode patterns, and the orthographic projection of the second electrode patterns on the substrate is at least partially overlapped with the orthographic projection of the third electrode patterns. According to the touch module provided by the embodiment of the invention, the second electrode patterns of which the grid wiring density is smaller than that of the first electrodes are arranged between the first electrode patterns and in the overlapping area of the first electrode patterns and the third electrode patterns, and the second electrode patterns can cover the touch blind area, so that the semaphore of the touch electrode layer is improved while the load is not obviously increased, and the touch effect is improved. Therefore, the touch performance is improved.

Description

Technical Field

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

[0002] Currently, display panels have increasingly higher requirements for touch operations. Touch panels need to be compatible with both capacitive touch and electromagnetic touch. However, touch panels that currently integrate two touch functions have the problem of low touch signal quantity, and the touch performance needs to be improved. Summary of the invention

[0003] The embodiments of the present application provide a touch module, a display panel, and a display device, which can integrate capacitive touch functions and electromagnetic touch functions while further improving the amount of touch signals, thereby improving the touch performance of the touch module.

[0004] In the first aspect, according to an embodiment of the present application, a touch module is provided, comprising: a substrate; a touch electrode layer, comprising a plurality of touch electrode repeating units; an electromagnetic coil layer; the touch electrode layer and the electromagnetic coil layer are arranged on one side of the substrate; wherein the touch electrode layer and the electromagnetic coil layer are a grid wiring structure, the touch electrode repeating unit comprises a plurality of first electrode patterns and second electrode patterns distributed along a second direction, the grid wiring density of the second electrode pattern is less than the grid wiring density of the first electrode pattern; the electromagnetic coil layer comprises a plurality of third electrode patterns, and the orthographic projection of the second electrode pattern on the substrate at least partially overlaps with the orthographic projection of the third electrode pattern on the substrate.

[0005] According to one aspect of an embodiment of the present application, the first electrode pattern includes a plurality of first electrode blocks and second electrode blocks alternately arranged along a first direction, the second electrode pattern includes a plurality of first electrode grids and second electrode grids alternately arranged along the first direction, and the first direction intersects with the second direction; the first electrode blocks and the first electrode grids are interconnected to form a first touch electrode, and the second electrode blocks and the second electrode grids are interconnected to form a second touch electrode.

[0006] According to one aspect of the embodiment of the present application, the first touch electrode includes a first electrode block and a first electrode grid adjacent to each other along the second direction.

[0007] According to one aspect of the embodiments of the present application, two first touch electrodes adjacent to each other along the first direction and / or the second direction are electrically connected to each other.

[0008] According to one aspect of the embodiment of the present application, the second touch electrode includes a second electrode block and a second electrode network located on both sides of the second electrode block in the second direction.

[0009] According to one aspect of the embodiments of the present application, the second touch electrodes adjacent to each other along the first direction and / or the second direction are electrically connected to each other.

[0010] According to one aspect of the embodiment of the present application, the electromagnetic coil layer further includes a bridge pattern, and two adjacent second touch electrodes along the first direction are electrically connected via the bridge pattern.

[0011] According to one aspect of the embodiment of the present application, an insulating layer is further provided between the touch electrode layer and the electromagnetic coil layer, the insulating layer includes a plurality of connecting through holes, and the bridge pattern is electrically connected to the second touch electrode through the connecting through holes.

[0012] According to one aspect of the embodiment of the present application, the bridge pattern includes a plurality of connection ends, and the connection ends are electrically connected to the second touch electrodes through the connection through holes.

[0013] According to one aspect of the embodiment of the present application, the bridge pattern further includes a plurality of conductive units, and the conductive unit includes at least two connecting paths connected in parallel and an opening formed by the connecting paths.

[0014] According to one aspect of the embodiment of the present application, the connection path is a metal wiring.

[0015] According to one aspect of the embodiment of the present application, an orthographic projection of the bridge pattern on the substrate at least partially overlaps with an orthographic projection of the first electrode block on the substrate.

[0016] According to one aspect of an embodiment of the present application, the first electrode block also includes a main body and an avoidance portion, the grid wiring density of the avoidance portion is less than the grid wiring density of the main body, and the orthographic projection of the avoidance portion on the substrate at least partially overlaps with the orthographic projection of the bridge pattern on the substrate.

[0017] According to one aspect of the embodiment of the present application, the touch electrode repeating unit further includes a second connecting line, and the plurality of second touch electrodes are electrically connected along the first direction to form a second electrode row, and the plurality of second electrode rows are also electrically connected to each other through the second connecting line.

[0018] According to one aspect of the embodiment of the present application, the second connecting line is disposed on at least one of two opposite sides of the touch electrode repeating unit along the first direction.

[0019] According to one aspect of the embodiment of the present application, the line width of the second connecting line is 2 μm to 4 μm, and the minimum distance between the second connecting line and the first touch electrode is 3 μm to 7 μm.

[0020] According to one aspect of the embodiment of the present application, the touch electrode repeating unit further includes a first connecting line, and the plurality of first touch electrodes are electrically connected along the second direction to form a first electrode column, and the plurality of first electrode columns are further electrically connected through the first connecting line.

[0021] According to one aspect of an embodiment of the present application, two adjacent first electrode grids located in the same second electrode pattern are electrically connected via a first connecting line.

[0022] According to one aspect of the embodiment of the present application, the shape of the first connecting line includes an M shape.

[0023] According to one aspect of the embodiment of the present application, the orthographic projection of the second electrode pattern on the substrate is located within the orthographic projection of the third electrode pattern on the substrate.

[0024] According to one aspect of the embodiment of the present application, the grid wiring width of the second electrode pattern is 2 μm to 4 μm, and the grid wiring width of the third electrode pattern is 3 μm to 7 μm.

[0025] According to one aspect of the embodiment of the present application, the orthographic projection of the first connecting line on the substrate is located within the orthographic projection of the third electrode pattern on the substrate.

[0026] According to one aspect of the embodiment of the present application, the grid wiring width of the first connecting wires is 2 μm to 4 μm.

[0027] In a second aspect, according to an embodiment of the present application, a display panel is provided, comprising a touch module as described in any of the preceding items.

[0028] According to one aspect of an embodiment of the present application, the display panel also includes a light-emitting layer, and the touch electrode layer and the electromagnetic coil layer are located on the light-emitting side of the light-emitting layer; the light-emitting layer includes a plurality of light-emitting units arranged in an array, the light-emitting unit includes a light-emitting part and a non-light-emitting area arranged around the light-emitting part, and the orthographic projection of the grid routing structure on the light-emitting layer is located in the non-light-emitting area.

[0029] In a third aspect, according to an embodiment of the present application, a display device is provided, comprising a display panel as described in any of the preceding items.

[0030] The touch module, display panel and display device provided in the embodiments of the present application are characterized in that the touch module is provided with a second electrode pattern between two adjacent first electrode patterns in a plurality of touch electrode repeating units, the second electrode pattern is provided in an area overlapping with the orthographic projection of the third electrode pattern of the electromagnetic coil layer, and the grid wiring density of the second electrode pattern is less than the grid wiring density of the first electrode pattern, the second electrode pattern can cover the touch blind area between the first electrode patterns, and the signal amount of the touch electrode layer is increased without significantly increasing the load between the touch electrode layer and the electromagnetic coil layer, thereby improving the touch performance of the touch module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] Figure 1 is a schematic diagram of a top view structure of a touch module provided in an embodiment of the present application;

[0033] Figure 2yes Figure 1 A schematic diagram of the enlarged structure of region A in the embodiment;

[0034] Figure 3 yes Figure 1 A schematic diagram of the stacked structure of a touch module provided in an embodiment;

[0035] Figure 4 yes Figure 2 A schematic diagram of a top view of a single touch electrode repeating unit in a touch electrode layer in an embodiment;

[0036] Figure 5a yes Figure 2 A schematic diagram of a top view of the structure of the first electromagnetic electrode layer of the electromagnetic coil layer in the embodiment;

[0037] Figure 5b yes Figure 2 A schematic diagram of a top view of the second electromagnetic electrode layer of the electromagnetic coil layer in the embodiment;

[0038] Figure 6a yes Figure 2 Schematic diagram of the enlarged structure of the middle B area;

[0039] Figure 6b yes Figure 2 Schematic diagram of the cross-sectional structure at bb in the middle;

[0040] Figure 6c yes Figure 5a A schematic diagram of the enlarged structure of the bridge in the middle C area;

[0041] Figure 7 yes Figure 4 Schematic diagram of the enlarged structure of the D region in the middle;

[0042] Figure 8 yes Figure 2 Schematic diagram of the enlarged structure of the middle E area;

[0043] Figure 8a yes Figure 8 Schematic diagram of the enlarged structure of the middle F region;

[0044] Fig. 9 is a schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0045] Fig.10 yes Fig. 9 A schematic diagram of the enlarged structure of the G region in the embodiment;

[0046] Fig.11 It is a schematic diagram of a process for preparing a touch module provided in an embodiment of the present application.

[0047] in:

[0048] 10-substrate;

[0049] 2-touch electrode layer; 20-touch electrode repeating unit;

[0050] 21-first electrode pattern; 211-first electrode block; 2111-main body; 2112-avoidance portion; 212-second electrode block;

[0051] 22-second electrode pattern; 221-first electrode grid; 222-second electrode grid;

[0052] 23 - first touch electrode; 24 - second touch electrode; 25 - first electrode column; 26 - second electrode row; 27 - first connecting line; 28 - second connecting line;

[0053] 30-electromagnetic coil layer; 301-first electromagnetic electrode layer; 302-second electromagnetic electrode layer; 31-third electrode pattern; 32-bridge pattern; 321-connection end; 322-conductive unit; 3221-connection path; 3222-opening;

[0054] 40-insulating layer; 41-connecting through hole;

[0055] 50-protective layer;

[0056] 60-light-emitting layer; 61-light-emitting unit; 611-light-emitting portion; 612-non-light-emitting area;

[0057] 100-touch module; 101-grid wiring structure;

[0058] 200-display panel;

[0059] X-first direction; Y-second direction; Z-thickness direction.

[0060] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0061] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the sentence "comprise..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0063] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the touch module and display device of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] At present, the touch screen is an input and display device that integrates display function and control function. That is, the light-emitting elements of the display panel are used to display and output the picture, while other control elements are used to facilitate users to directly click on the screen to input information. There are many ways to input touch screens. Among them, users can directly use their fingers to touch, drag and gesture the displayed content. This input method is the simplest and most convenient human-computer interaction method among the current input methods.

[0065] Currently, the mainstream solution for achieving finger touch is to use a capacitive touch screen. Its basic principle is to use capacitance changes to detect the touch position. The capacitive touch screen includes a touch panel and a control circuit. The touch panel forms a capacitive structure by overlapping two layers of conductive materials or electrodes, and completes touch perception, position detection and subsequent data processing through the control circuit.

[0066] The capacitive touch panel is generally a separate module externally mounted on the display panel, and together with the display panel forms a complete display module.

[0067] However, with the continuous development of display technology, people have more and more demands for touch screens, requiring that the touch screens can be touched with an electromagnetic pen in addition to being able to be touched with fingers.

[0068] Electromagnetic touch mainly uses the change in magnetic flux between an electromagnetic pen and an electromagnetic induction coil to detect the touch position, so the display device needs to be equipped with external components such as an electromagnetic induction coil.

[0069] At present, the electromagnetic pen technology or capacitive touch technology of conventional OLED display panels both attach functional components externally to the display panel, and the electromagnetic module components or the capacitive touch panel and the display panel together form a complete display module.

[0070] The related technology provides a touch panel, which embeds the external functional components of the electromagnetic module elements into the capacitive touch panel, integrates the touch electrode unit and the electromagnetic coil unit into one touch panel, and at the same time, staggers the orthographic projections of the touch electrode unit and the electromagnetic coil unit on the substrate on which the touch panel is set, thereby increasing the distance between the touch electrode unit and the electromagnetic coil unit and reducing the coupling capacitance between the touch electrode unit and the electromagnetic coil unit.

[0071] However, the touch panel provided by the related technology needs to keep the touch electrode unit and the electromagnetic coil unit's orthographic projections on the substrate staggered, so there is a touch blind area in the conductive layer where the touch electrode unit is located that cannot be covered by the touch electrode unit. The existence of the touch blind area will reduce the amount of touch signals here, thereby affecting the touch performance of the entire touch panel.

[0072] At the same time, since the touch electrode unit adopts a zoned design, the touch electrode sub-units in different directions in the touch electrode unit must first be connected in one direction to form a whole electrode pattern extending along the direction. For example, the touch sensing electrode units are connected in the horizontal direction to form a whole sensing electrode pattern, and the touch receiving electrode units are connected in the vertical direction to form a whole receiving electrode pattern. The multiple electrode patterns formed by connection in the same direction can finally form an electrical connection at the edge of the entire touch panel.

[0073] Inside the touch panel, the touch electrode units need to be staggered with the electromagnetic coil units. After the touch electrode units are electrically connected in one direction to form an electrode pattern, no additional electrical connection can be set between the electrode patterns inside the touch panel. There may be uneven charging and discharging between multiple electrode patterns, which also affects the touch performance of the entire touch panel.

[0074] Based on the consideration and technical needs for solving the above-mentioned problems, the present application proposes a touch module, a display panel and a display device.

[0075] See also Figures 1 to 4 The embodiment of the present application provides a touch module 100 , including a substrate 10 , a touch electrode layer 2 and an electromagnetic coil layer 30 .

[0076] See also Figure 3 The touch electrode layer 2 and the electromagnetic coil layer 30 are arranged on one side of the substrate 10 .

[0077] See also Figure 4 The touch electrode layer 2 includes a plurality of touch electrode repeating units 20 .

[0078] See also Figure 2 and Figure 3 The touch electrode layer 2 and the electromagnetic coil layer 30 are grid wiring structures, see Figure 4 The touch electrode repeating unit 20 includes a plurality of first electrode patterns 21 and second electrode patterns 22 distributed along the second direction Y, and the grid wiring density of the second electrode patterns 22 is less than the grid wiring density of the first electrode patterns 21 .

[0079] See also Figure 5a The electromagnetic coil layer 30 includes a plurality of third electrode patterns 31 , and the orthographic projection of the second electrode pattern 22 on the substrate 10 at least partially overlaps with the orthographic projection of the third electrode pattern 31 on the substrate 10 .

[0080] The touch module 100 provided in the embodiment of the present application is provided with a second electrode pattern 22 between two adjacent first electrode patterns 21 in a plurality of touch electrode repeating units 20. The second electrode pattern 22 is provided in an area overlapping with the orthographic projection of the third electrode pattern 31 of the electromagnetic coil layer 30, and the grid wiring density of the second electrode pattern 22 is less than the grid wiring density of the first electrode pattern 21. The second electrode pattern 22 can cover the touch blind area between the first electrode patterns 21, and improve the signal amount of the touch electrode layer 2 without significantly increasing the load between the touch electrode layer 2 and the electromagnetic coil layer 30, thereby improving the touch performance of the touch module 100.

[0081] The substrate 10 in the touch module 100 mainly plays a supporting role, and other film layers are stacked on the substrate 10. The stacking arrangement mentioned here means that the other film layers are one, two or more in the same layer in a horizontal plane perpendicular to the thickness direction Z, and then stacked along the thickness direction Z of the substrate 10. The substrate 10 may include a multi-layer film layer structure, and the substrate 10 may include but is not limited to a protective film layer structure, an insulating film layer structure, and a coil structure. The specific film layer structure and the film layer structure composition of the substrate 10 are not limited in the embodiment of the present application. And the thickness direction Z of other film layers located on one side of the substrate 10 is usually consistent with the thickness direction Z of the substrate 10 itself. Therefore, for the convenience of expression, the thickness direction Z of the substrate 10 or the thickness direction Z of other film layers mentioned later in the embodiment of the present application are all shown in the same direction.

[0082] The material of the substrate 10 includes silicon nitride (SiNx), silicon oxide (SiOx), etc. The material of the substrate 10 may also include different combinations of the above materials, which is not limited in the embodiment of the present application.

[0083] The touch electrode layer 2 is used to implement a capacitive touch function. Capacitive touch is a method for controlling displayed content when a user touches the touch module 100 of the display panel 200 with a finger. Capacitive touch includes two types of touch: self-capacitive touch and mutual-capacitive touch.

[0084] The touch electrode layer 2 for realizing self-capacitive touch and mutual capacitive touch includes at least one touch electrode. The touch electrode and the ground form a touch capacitor, or adjacent touch electrodes form a touch capacitor. When a finger touches the touch module 100, the electric field access of the human body will change the touch capacitor, causing the touch capacitance at a specific position of the screen to change, and the purpose of detecting the touch position is achieved based on the change in touch capacitance.

[0085] Exemplarily, the materials used to prepare the touch electrode layer 2 include copper (Cu), silver (Ag), aluminum (Al), molybdenum (Mo), etc., and can also be alloy materials such as titanium aluminum alloy (TiALTi), copper nickel alloy (CuNi), aluminum molybdenum alloy (MoAlMo), etc., which is not limited to the embodiments of the present application.

[0086] See also Figure 4 , Figure 4 What can be shown is a touch electrode repeating unit 20 in the touch electrode layer 2, and the entire touch electrode layer 2 is formed by multiplexing and arranging a touch electrode repeating unit 20. Therefore, the description of the subsequent embodiments takes a touch electrode repeating unit 20 as an example to illustrate the structure of the entire touch electrode layer 2.

[0087] The electromagnetic coil layer 30 is used to realize the electromagnetic touch function. The electromagnetic coil layer 30 includes at least two electromagnetic electrodes in different directions. The contact position of the electromagnetic pen is detected by detecting the change of the magnetic flux of the electromagnetic electrodes.

[0088] Optionally, see Figure 5a and Figure 5b The electromagnetic coil layer 30 includes a first electromagnetic electrode layer 301 and a second electromagnetic electrode layer 302 , and the first electromagnetic electrode layer 301 and the second electromagnetic electrode layer 302 are spaced apart by an insulating material.

[0089] Figure 5a The structure of the first electromagnetic electrode layer 301 is shown. Figure 5a The first electromagnetic electrode layer 301 shown includes at least a third electrode pattern 31 which is arranged to overlap with the second electrode pattern 22 in the touch electrode layer 2 in an orthographic projection and is close to the touch electrode layer 2 in a vertical distance.

[0090] Figure 5b The structure of the second electromagnetic electrode layer 302 is shown.

[0091] Exemplarily, the preparation material of the electromagnetic coil layer 30 includes copper (Cu), silver (Ag), aluminum (Al), molybdenum (Mo), etc., or it can be an alloy material, such as titanium aluminum alloy (TiALTi), copper nickel alloy (CuNi), aluminum molybdenum alloy (MoAlMo), etc., which is not limited to the embodiment of the present application.

[0092] The electromagnetic coil layer 30 and the touch electrode layer 2 are both disposed on one side of the substrate 10 . In the embodiment of the present application, the specific stacking relationship between the electromagnetic coil layer 30 and the touch electrode layer 2 on one side of the substrate 10 is not limited.

[0093] Exemplarily, the touch electrode layer 2 is used for a self-capacitive touch function, and the touch electrode repeating unit 20 may include a touch electrode arranged in the same layer, for example, multiple touch electrodes and the electromagnetic coil layer 30 are arranged in different layers, or at least part of the touch electrodes and the electromagnetic coil layer 30 may also be arranged in the same layer.

[0094] Optionally, the touch electrode layer 2 is used for mutual capacitive touch function and may include two touch electrodes. The two different touch electrodes may be arranged in the same layer, or may be arranged in the same layer with at least part of the electromagnetic coil layer 30 .

[0095] Optionally, the two electromagnetic electrodes in the electromagnetic coil layer 30 may be arranged in different layers, respectively in the first electromagnetic electrode layer 301 and the second electromagnetic electrode layer 302 .

[0096] The electromagnetic coil layer 30 can also have two electromagnetic electrodes arranged in the same layer and then be conductively connected through a connection structure arranged in different layers.

[0097] See also Figure 3 Optionally, the touch module 100 provided in the embodiment of the present application can set the positional relationship between the touch electrode layer 2 and the electromagnetic coil layer 30 on one side of the substrate 10 as follows: the electromagnetic coil layer 30 is set on one side of the substrate 10, and the touch electrode layer 2 is set on the side of the electromagnetic coil layer 30 away from the substrate 10; the two electromagnetic electrodes in the electromagnetic coil layer 30 are set in different layers; the two touch electrodes in the touch electrode layer 2 are set in the same layer; an insulating layer 40 is set between the touch electrode layer 2 to complete electrical insulation; and a protective layer 50 can be set on the side of the touch electrode layer 2 away from the electromagnetic coil layer 30 to cover and protect the entire touch module 100.

[0098] The material of the insulating layer 40 includes silicon nitride (SiNx), silicon oxide (SiOx) and organic materials, etc. The material of the insulating layer 40 may also include different combinations of the above materials, which is not limited in the embodiment of the present application.

[0099] The protective layer 50 protects the electrode structure and other structures of the touch electrode layer 2 and the electromagnetic coil layer 30 from physical scratches or electrochemical corrosion and other accidents. The material of the protective layer 50 includes silicon nitride (SiNx), silicon oxide (SiOx) and organic materials, etc. The material of the protective layer 50 can also include different combinations of the above materials, which is not limited in the embodiments of the present application.

[0100] The touch electrode layer 2 and the electromagnetic coil layer 30 are grid wiring structures, which means that the touch electrode layer 2 and the electromagnetic coil layer 30 are, as a whole, a layered structure that covers the entire display panel 200. In terms of specific structure, the touch electrode layer 2 and the electromagnetic coil layer 30 are specifically presented as grid-shaped wiring in order to achieve lightness and thinness and not block the light-emitting function of the display panel 200. The light-emitting structure of the display panel 200 can transmit light through the gaps defined between the grid wirings. While not blocking the light-emitting structure of the display panel 200, the touch electrode layer 2 and the electromagnetic coil layer 30 can cover the entire display panel 200.

[0101] When the electrode structures of the touch electrode layer 2 and the electromagnetic coil layer 30 are fabricated on the entire substrate 10, a layer of metal mesh wiring is interrupted, wherein the gaps between the metal meshes on the entire surface can allow light emitted by the light emitting structure to pass through.

[0102] The grid wiring density refers to the density of the grid wiring. For example, in a whole touch electrode layer 2 or electromagnetic coil layer 30, the density of the grid wiring in different areas can be set differently.

[0103] The greater the density of the grid routing in a partial area, the smaller the gap between the grid routing, the gap can accommodate at most one light-emitting structure, the more the metal routing part of the grid routing covers the area of ​​the display panel 200, the stronger the touch signal or electromagnetic signal in the area, the higher the coupling capacitance generated between the touch electrodes or electromagnetic electrodes stacked in different layers but in the same area, and the higher the load.

[0104] On the contrary, the smaller the density of the grid routing in a partial area, the larger the gap between the grid routing, the gap can accommodate multiple or a group of light-emitting structures, the metal routing part of the grid routing covers a smaller area of ​​the display panel 200, the weaker the touch signal or electromagnetic signal in the area, the lower the coupling capacitance generated between the touch electrodes or electromagnetic electrodes in different layers but in the same area, and the lower the load.

[0105] Two first electrode patterns 21 and second electrode patterns 22 with different grid wiring densities are arranged in a touch electrode repeating unit 20, and the second electrode pattern 22 with a smaller grid wiring density is at least partially overlapped with the third electrode pattern 31 in the electromagnetic coil layer 30, so that the touch blind area of ​​the touch electrode layer 2 can be reduced without significantly increasing the load between the touch electrode layer 2 and the electromagnetic coil layer 30. Compared with the related art in which the touch electrode and the electromagnetic electrode need to be staggered and there is a touch blind area between the touch electrodes, the touch module 100 provided in the embodiment of the present application can reduce the touch blind area and increase the signal amount of the touch electrode layer 2 after the touch electrode layer 2 covers the display panel 200, thereby improving the touch performance of the touch module 100.

[0106] For example, see Figure 4 The first electrode patterns 21 and the second electrode patterns 22 can be arranged to be alternately distributed along the second direction Y. After the first electrode patterns 21 are arranged at a certain interval along the second direction Y, the second electrode patterns 22 are arranged between the first electrode patterns 21 along the second direction Y.

[0107] The direction is set as the second direction Y only for the convenience of description. Exemplarily, the first electrode pattern 21 and the second electrode pattern 22 may also be arranged to be distributed along the first direction X or along other directions.

[0108] The first electrode pattern 21 can also be arranged to be distributed in a specific area. In the embodiment of the present application, there is no limitation on the specific arrangement of the first electrode pattern 21 and the second electrode pattern 22, as long as the first electrode pattern 21 and the second electrode pattern 22 are distributed in a certain direction and the orthographic projection of the second electrode pattern 22 on the substrate 10 at least partially overlaps with the orthographic projection of the third electrode pattern 31 on the substrate 10.

[0109] See also Figure 4 In some embodiments, the first electrode pattern 21 includes a plurality of first electrode blocks 211 and second electrode blocks 212 alternately arranged along the first direction X, and the second electrode pattern 22 includes a plurality of first electrode grids 221 and second electrode grids 222 alternately arranged along the first direction X.

[0110] The first direction X and the second direction Y intersect.

[0111] The first electrode block 211 and the first electrode grid 221 are connected to each other to form a first touch electrode 23 , and the second electrode block 212 and the second electrode grid 222 are connected to each other to form a second touch electrode 24 .

[0112] In these embodiments, the first electrode pattern 21 and the second electrode pattern 22 are further divided, and part of the first electrode pattern 21 and part of the second electrode pattern 22 are respectively connected to each other to form a first touch electrode 23 and a second touch electrode 24 for realizing the touch function, thereby ensuring that the touch electrode layer 2 of the touch module 100 forms a basic structure for realizing the touch function while further improving the touch performance.

[0113] The direction is set to the first direction X only for the convenience of explanation. Exemplarily, the first electrode block 211 and the second electrode block 212 in the first electrode pattern 21, and the first electrode grid 221 and the second electrode grid 222 in the second electrode pattern 22 can also be set to be distributed along the second direction Y or distributed along other directions, as long as the arrangement direction of the first electrode pattern 21 and the second electrode pattern 22 intersects with the arrangement direction of the internal structure of the first electrode pattern 21 and the second electrode pattern 22, so that the first electrode block 211, the second electrode block 212, the first electrode grid 221 and the second electrode grid 222 can be arranged alternately and spaced on the touch electrode layer 2.

[0114] By dividing part of the first electrode pattern 21 and part of the second electrode pattern 22 to form the first touch electrode 23 and the second touch electrode 24 respectively, not only can it be ensured that the touch electrode layer 2 can form a basic structure for realizing the touch function, the first touch electrode 23 and the second touch electrode 24 also include at least part of the first electrode pattern 21 with a large grid wiring density and part of the second electrode pattern 22 with a small grid wiring density. The first touch electrode 23 and the second touch electrode 24 are evenly distributed in the touch electrode layer 2, and the touch signal is evenly distributed in the entire touch electrode layer 2 and the entire touch module 100, thereby further improving the touch performance of the touch module 100.

[0115] See also Figure 4 In some optional embodiments, the first touch electrode 23 includes a first electrode block 211 and a first electrode grid 221 adjacent to each other along the second direction Y.

[0116] In these optional embodiments, a first touch electrode 23 specifically includes a first electrode block 211 and a first electrode grid 221 adjacent to each other along the second direction Y. By arranging the first electrode blocks 211 and the first electrode grid 221 alternately along the second direction Y, the first touch electrodes 23 can be arranged sequentially along the second direction Y, thereby optimizing the grid routing distribution structure of the touch electrode layer 2.

[0117] See also Figure 4 In some optional embodiments, two first touch electrodes 23 adjacent to each other along the first direction X and / or the second direction Y are electrically connected to each other.

[0118] In these optional embodiments, after a portion of the first electrode patterns 21 and a portion of the second electrode patterns 22 are divided into first touch electrodes 23, the first touch electrodes 23 are connected in sequence along the second direction Y through the first electrode blocks 211 and the first electrode grids 221. In addition, the first touch electrodes 23 can also be connected in a touch electrode repeating unit 20 through the first electrode blocks 211 and the first electrode grids 221 along the first direction X. Inside the touch electrode repeating unit 20, the first touch electrodes 23 can achieve additional electrical connections in different directions, so that the charge and discharge between the multiple first touch electrodes 23 are uniform, thereby improving the touch performance of the touch module 100.

[0119] See also Figure 4 In some optional embodiments, the second touch electrode 24 includes a second electrode block 212 and a second electrode grid 222 located on both sides of the second electrode block 212 in the second direction Y.

[0120] In these optional embodiments, a second touch electrode 24 includes a second electrode block 212 and two second electrode grids 222 on both sides along the second direction Y. By arranging the second electrode blocks 212 and the second electrode grids 222 alternately along the second direction Y, the second touch electrodes 24 can be arranged sequentially along the second direction Y, further optimizing the grid routing distribution structure of the touch electrode layer 2.

[0121] See also Figure 4 In some optional embodiments, the second touch electrodes 24 adjacent to each other along the first direction X and / or the second direction Y are electrically connected to each other.

[0122] In these optional embodiments, after a portion of the first electrode pattern 21 and a portion of the second electrode pattern 22 are divided into the second touch electrodes 24, the second touch electrodes 24 can be connected in sequence along the first direction X through the second electrode block 212 and other electrical connection structures provided in different layers, and the second touch electrodes 24 can also be connected in a touch electrode repeating unit 20 along the second direction Y. Similarly, inside the touch electrode repeating unit 20, the second touch electrodes 24 can achieve additional electrical connections in different directions, so that the charging and discharging between the plurality of second touch electrodes 24 is uniform, thereby improving the touch performance of the touch module 100.

[0123] See also Figure 5a , Figures 6a to 6c In some embodiments, the electromagnetic coil layer 30 further includes a bridge pattern 32 , and two adjacent second touch electrodes 24 along the first direction X are electrically connected via the bridge pattern 32 .

[0124] In these embodiments, the two second touch electrodes 24 are electrically connected along the first direction X through the bridge pattern 32 arranged on a different layer in the electromagnetic coil layer 30. When the first touch electrode 23 and the second touch electrode 24 are arranged on the same layer of the touch electrode layer 2, the first touch electrode 23 and the second touch electrode 24 can be spaced and insulated from each other to avoid overlapping between the two and causing short circuits.

[0125] See also Figure 6b In some optional embodiments, an insulating layer 40 is further provided between the touch electrode layer 2 and the electromagnetic coil layer 30 , and the insulating layer 40 includes a plurality of connecting through holes 41 , and the bridge pattern 32 is electrically connected to the second touch electrode 24 through the connecting through holes 41 .

[0126] In these optional embodiments, the touch module 100 provided in the embodiment of the present application has a connection through hole 41 preset on the insulating layer 40 to facilitate the electrical connection between the bridge pattern 32 and the second touch electrode 24 through the insulating layer 40 .

[0127] The material of the insulating layer 40 includes silicon nitride (SiNx), silicon oxide (SiOx) and organic materials, etc. The material of the insulating layer 40 may also include different combinations of the above materials, which is not limited in the embodiment of the present application.

[0128] See also Figure 5a , Figure 6a and Figure 6c In some optional embodiments, the bridge pattern 32 includes a plurality of connection ends 321 , and the connection ends 321 are electrically connected to the second touch electrodes 24 through the connection through holes 41 .

[0129] In these optional embodiments, in the touch module 100 provided in the embodiments of the present application, the bridge pattern 32 is provided with a plurality of connection ends 321. As long as the two second touch electrodes 24 are respectively electrically connected to at least one connection end 321 in the bridge pattern 32 through the connecting through hole 41, the two second touch electrodes 24 can be electrically connected along the first direction X, thereby further improving the electrical connection reliability of the bridge pattern 32.

[0130] Exemplarily, the number of connection ends 321 may be four, the bridge pattern 32 is composed of two grid lines, and the four connection ends 321 are the two ends of the two grid lines.

[0131] See also Figure 5a , Figure 6a and Figure 6c In some optional embodiments, the bridge pattern 32 further includes a plurality of conductive units 322 , and the conductive unit 322 includes at least two connecting paths 3221 connected in parallel and an opening 3222 formed by the connecting paths 3221 .

[0132] In these optional embodiments, the touch module 100 provided in the embodiment of the present application, the bridge pattern 32 further includes a plurality of conductive units 322 between the connection ends 321. By setting the conductive unit 322 to include at least two connection paths 3221, it is not only possible to ensure that when part of the wiring of the bridge pattern 32 is disconnected, the connection ends 321 can still maintain electrical connection through the remaining patterns of the bridge pattern 32. The openings 3222 enclosed by the connection paths 3221 can also further reduce the coupling capacitance between the bridge pattern 32 and the first electrode pattern 21, and further reduce the load of the touch module 100.

[0133] The bridge pattern 32 is a pattern including multiple conductive units 322. When any connection path 3221 of a conductive unit 322 is disconnected, the connection end 321 can still maintain electrical connection through the remaining patterns. As long as the multiple conductive units 322 do not have two connection paths 3221 disconnected, the bridge pattern 32 can achieve normal connection function.

[0134] The conductive unit 322 also includes an opening 3222 formed by the connecting path 3221. The opening 3222 can also reduce the relative overlapping area between the bridge pattern 32 and the first electrode pattern 21, reduce the coupling capacitance between the two, and further reduce the load of the touch module 100. The light-emitting structure in the display panel 200 can also transmit light through the opening 3222 of the conductive unit 322, and there will be no problem of the bridge pattern 32 blocking the light-emitting function.

[0135] In some optional embodiments, the connecting path 3221 is a metal trace.

[0136] In these optional embodiments, the connection path 3221 is also a metal grid wiring structure, and openings 3222 are formed between the grid wiring structures to reduce the manufacturing cost.

[0137] Exemplarily, the bridge pattern 32 is formed by combining two grid lines, and the two grid lines are bent in opposite directions, so that an opening 3222 is formed between the two grid lines. Figure 6a In some embodiments, the orthographic projection of the bridge pattern 32 on the substrate 10 at least partially overlaps with the orthographic projection of the first electrode block 211 on the substrate 10 .

[0138] In these embodiments, the bridge pattern 32 is directly disposed between the second electrode blocks 212 and at least partially overlaps with the orthographic projection of the first electrode block 211 in the first electrode pattern 21 on the substrate 10, thereby reducing design and manufacturing costs.

[0139] See also Figure 4 and Figure 6aIn some optional embodiments, the first electrode block 211 also includes a main body 2111 and an avoidance portion 2112, the grid wiring density of the avoidance portion 2112 is less than the grid wiring density of the main body 2111, and the orthographic projection of the avoidance portion 2112 on the substrate 10 at least partially overlaps with the orthographic projection of the bridge pattern 32 on the substrate 10.

[0140] In these optional embodiments, the mesh wiring density of the avoidance portion 2112 overlapping with the orthographic projection of the bridge pattern 32 is smaller, further reducing the coupling capacitance between the bridge pattern 32 and the first electrode block 211 , and further reducing the load of the touch module 100 .

[0141] See also Figure 4 and Figure 7 In some embodiments, the touch electrode repeating unit 20 further includes a second connecting line 28 , and the plurality of second touch electrodes 24 are electrically connected along the first direction X to form a second electrode row 26 , and the plurality of second electrode rows 26 are also electrically connected to each other through the second connecting line 28 .

[0142] In these embodiments, after the second touch electrodes 24 in the same row in the touch electrode repeating unit 20 are electrically connected in the first direction X to form a plurality of second electrode rows 26, the second electrode rows 26 are electrically connected to each other through the second connecting lines 28. In the touch electrode repeating unit 20, the second touch electrodes 24 are electrically connected in a plurality of directions along the first direction X and along the second direction Y, respectively, to prevent the problem of uneven charging and discharging between the plurality of second electrode rows 26, thereby improving the touch performance of the entire touch module 100.

[0143] See also Figure 4 and Figure 7 In some optional embodiments, the second connection line 28 is disposed on at least one of two opposite sides of the touch electrode repeating unit 20 along the first direction X.

[0144] In these optional embodiments, the second connection line 28 is arranged on one side of the touch electrode repeating unit 20, which can ensure that the second touch electrodes 24 are electrically connected in multiple directions inside each touch electrode repeating unit 20. At the same time, the second connection line 28 is arranged on at least one side of the two sides opposite to the touch electrode repeating unit 20 along the first direction X, so that the second connection line 28 is conveniently connected to the plurality of second electrode rows 26 that have been sequentially connected and arranged along the first direction X, thereby optimizing the layout structure of the grid wiring of the touch electrode layer 2.

[0145] See also Figure 7 In some optional embodiments, the line width of the second connection line 28 is 2 μm to 4 μm, and the minimum distance between the second connection line 28 and the first touch electrode 23 is 3 μm to 7 μm.

[0146] In these optional embodiments, by setting the minimum distance between the second connecting line 28 and the first touch electrode 23 to be greater than the line width of the second connecting line 28, it is ensured that the second connecting line 28 is arranged as close to the first electrode pattern 21 and the second electrode pattern 22 as possible, thereby improving the integration of the touch electrode layer 2 and avoiding overlapping of the second connecting line 28 and the first touch electrode 23 to cause short circuits and other problems.

[0147] The minimum distance between the second connection line 28 and the first touch electrode 23 should be understood as: the vertical distance from one end of the grid pattern closest to the second connection line 28 in the grid pattern of the first touch electrode 23 to one side of the second connection line 28, this vertical distance is at least 3μm to 7μm, and the minimum distance from the second connection line 28 to the grid pattern of the first electrode block 211 in the first touch electrode 23 and the minimum distance from the second connection line 28 to the grid pattern of the first electrode grid 221 in the first touch electrode 23 are both at least 3μm to 7μm.

[0148] Optionally, the minimum distance between the second connection line 28 and the first touch electrode 23 is one of 3 μm, 4 μm, 5 μm, 6 μm and 7 μm.

[0149] Optionally, the line width of the second connection line 28 is one of 2 μm, 2.5 μm, 3 μm, 3.5 μm and 4 μm.

[0150] See also Figure 4 and Figure 8 In some embodiments, the touch electrode repeating unit 20 further includes a first connecting line 27 , and the plurality of first touch electrodes 23 are electrically connected along the second direction Y to form a first electrode column 25 , and the plurality of first electrode columns 25 are also electrically connected through the first connecting line 27 .

[0151] In these embodiments, after the first touch electrodes 23 in the same column in the touch electrode repeating unit 20 are electrically connected in the second direction Y to form a plurality of first electrode columns 25, the first electrode columns 25 are electrically connected to each other through the first connecting lines 27. In the touch electrode repeating unit 20, the first touch electrodes 23 are electrically connected in a plurality of directions along the first direction X and along the second direction Y, respectively, to prevent the problem of uneven charging and discharging between the plurality of first electrode columns 25, thereby further improving the touch performance of the entire touch module 100.

[0152] See also Figure 4 and Figure 8 In some optional embodiments, two adjacent first electrode grids 221 located in the same second electrode pattern 22 are electrically connected via a first connecting line 27 .

[0153] In these optional embodiments, the first connection lines 27 can ensure that the first touch electrodes 23 are electrically connected in multiple directions within each touch electrode repeating unit 20. At the same time, the first connection lines 27 are arranged between the first electrode grids 221, which facilitates the first connection lines 27 to connect with multiple first electrode columns 25 that have been sequentially connected and arranged along the second direction Y, while not conflicting with the arrangement of the second touch electrodes 24, further optimizing the layout structure of the grid routing of the touch electrode layer 2.

[0154] Please continue reading Figure 4 and Figure 8 In some optional embodiments, the first connecting line 27 is in an M shape.

[0155] See also Figure 8 and Figure 8a In some embodiments, the orthographic projection of the second electrode pattern 22 on the substrate 10 is located within the orthographic projection of the third electrode pattern 31 on the substrate 10 .

[0156] See also Figure 8 and Figure 8a In some optional embodiments, the grid line width of the second electrode pattern 22 is 2 μm to 4 μm, and the grid line width of the third electrode pattern 31 is 3 μm to 7 μm.

[0157] In these embodiments, by setting the grid routing width of the third electrode pattern 31, the resistance of the electromagnetic coil layer 30 can be reduced while reducing the relative area between the second electrode pattern 22 and the third electrode pattern 31, thereby further reducing the coupling capacitance between the second electrode pattern 22 and the third electrode pattern 31, and further reducing the load of the touch module 100.

[0158] Optionally, the grid line width of the second electrode pattern 22 is one of 2 μm, 2.5 μm, 3 μm, 3.5 μm and 4 μm.

[0159] Optionally, the grid line width of the third electrode pattern 31 is one of 3 μm, 4 μm, 5 μm, 6 μm and 7 μm.

[0160] Please continue reading Figure 8 In some optional embodiments, the orthographic projection of the first connecting line 27 on the substrate 10 is located within the orthographic projection of the third electrode pattern 31 on the substrate 10 .

[0161] Please continue reading Figure 8 , the grid wiring width of the first connecting line 27 is 2 μm to 4 μm.

[0162] In these embodiments, the relative area between the first connection line 27 and the third electrode pattern 31 is further reduced, thereby further reducing the coupling capacitance between the first connection line 27 and the third electrode pattern 31 and further reducing the load of the touch module 100 .

[0163] Optionally, the mesh wiring width of the first connection lines 27 is one of 2 μm, 2.5 μm, 3 μm, 3.5 μm and 4 μm.

[0164] Second, see Fig. 9 The embodiment of the present application also provides a display panel 200, including the touch module 100 as described in any of the previous embodiments. Since the display panel 200 provided in the embodiment of the present application includes the display panel 200 of the above embodiment, the display device provided in the embodiment of the second aspect of the present application has the beneficial effects of the touch module 100 of the embodiment of the first aspect, which will not be repeated here.

[0165] The display panel 200 provides a disposition space for a light emitting structure that realizes light emitting and display functions.

[0166] For example, see Fig.11 After the packaging process of the display panel 200 is completed, the preparation method of preparing the touch module 100 on the packaging layer of the display panel 200 can be set as follows:

[0167] Step S100 , preparing a substrate 10 on the encapsulation layer of the display panel 200 .

[0168] The thickness of the substrate 10 can be set to 0.2 μm to 0.4 μm. The material of the substrate 10 includes silicon nitride (SiNx), silicon oxide (SiOx), etc. The material of the substrate 10 can also include different combinations of the above materials, which is not limited in the embodiment of the present application.

[0169] Optionally, the thickness of the substrate 10 may be set to one of 0.2 μm, 0.3 μm and 0.4 μm.

[0170] Step S200 , preparing an electromagnetic coil layer 30 on a side of the substrate 10 away from the packaging layer of the display panel 200 .

[0171] The thickness of the grid wiring structure 101 of the electromagnetic coil layer 30 is 0.2μm to 0.6μm. The preparation material of the electromagnetic coil layer 30 includes copper (Cu), silver (Ag), aluminum (Al), molybdenum (Mo), etc., and can also be an alloy material, such as titanium aluminum alloy (TiALTi), copper nickel alloy (CuNi), aluminum molybdenum alloy (MoAlMo), etc., which is not limited to the embodiment of the present application.

[0172] Optionally, the thickness of the grid wiring structure 101 of the electromagnetic coil layer 30 may be set to one of 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm and 0.6 μm.

[0173] Step S300 , preparing an insulating layer 40 on a side of the electromagnetic coil layer 30 away from the substrate 10 .

[0174] The thickness of the insulating layer 40 can be set to 0.2μm to 0.4μm. The material of the insulating layer 40 includes silicon nitride (SiNx), silicon oxide (SiOx) and organic materials, etc. The material of the insulating layer 40 can also include different combinations of the above materials, which is not limited in the embodiment of the present application.

[0175] Alternatively, the thickness of the insulating layer 40 may be set to one of 0.2 μm, 0.3 μm, and 0.4 μm.

[0176] Step S400 , preparing a touch electrode layer 2 on a side of the insulating layer 40 away from the electromagnetic coil layer 30 .

[0177] The thickness of the grid wiring structure 101 of the touch electrode layer 2 is 0.2μm to 0.4μm. The preparation material of the touch electrode layer 2 includes copper (Cu), silver (Ag), aluminum (Al), molybdenum (Mo), etc., and can also be an alloy material, such as titanium aluminum alloy (TiALTi), copper nickel alloy (CuNi), aluminum molybdenum alloy (MoAlMo), etc., which is not limited to the embodiment of the present application.

[0178] Optionally, the thickness of the grid wiring structure 101 of the touch electrode layer 2 may be set to one of 0.2 μm, 0.3 μm and 0.4 μm.

[0179] Step S500 , disposing a protection layer 50 on a side of the touch electrode layer 2 away from the insulating layer 40 .

[0180] The protective layer 50 protects the electrode structure and other structures of the touch electrode layer 2 and the electromagnetic coil layer 30 from physical scratches or electrochemical corrosion and other accidents. The material of the protective layer 50 includes silicon nitride (SiNx), silicon oxide (SiOx) and organic materials, etc. The material of the protective layer 50 can also include different combinations of the above materials, which is not limited in the embodiments of the present application.

[0181] Please continue reading Fig.10 In some embodiments, the display panel 200 further includes a light-emitting layer 60 , and the touch electrode layer 2 and the electromagnetic coil layer 30 are located on the light-emitting side of the light-emitting layer 60 .

[0182] The light-emitting layer 60 includes a plurality of light-emitting units 61 arranged in an array. The light-emitting unit 61 includes a light-emitting portion 611 and a non-light-emitting area 612 arranged around the light-emitting portion 611 . The orthographic projection of the grid wiring structure 101 on the light-emitting layer 60 is located in the non-light-emitting area 612 .

[0183] In these embodiments, the grid wiring structure 101 of the touch electrode layer 2 and the electromagnetic coil layer 30 are arranged around the light-emitting portion 611, effectively avoiding blocking the light-emitting portion 611 of the light-emitting unit 61, not affecting the optical effect, and ensuring the normal realization of the light-emitting and display functions of the display panel 200.

[0184] In the third aspect, the embodiment of the present application further provides a display device, including the display panel of the above embodiment. Since the display device provided by the embodiment of the present application includes the display panel of the above embodiment, the display device provided by the embodiment of the third aspect of the present application has the beneficial effects of the touch module of the embodiment of the first aspect and the display panel of the embodiment of the second aspect, which will not be repeated here.

[0185] In some optional embodiments, the display device further includes an electromagnetic stylus. The electromagnetic stylus is matched with the electromagnetic coil layer to detect the touch position. Electromagnetic induction technology can detect the position and pressure of the electromagnetic stylus on the touch module, and determine the touch position by sensing the change of electromagnetic magnetic flux around the pen tip, thereby achieving a very delicate touch experience.

[0186] Optionally, the display device further includes a chip, such as a touch chip. The electromagnetic coil layer and the touch electrode layer may be electrically connected to the chip.

[0187] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0188] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A touch module, characterized in that: include: substrate; A touch electrode layer, comprising a plurality of touch electrode repeating units; Electromagnetic coil layer; The touch electrode layer and the electromagnetic coil layer are arranged on one side of the substrate; The touch electrode layer and the electromagnetic coil layer are grid wiring structures, the touch electrode repeating unit includes a plurality of first electrode patterns and second electrode patterns distributed along the second direction, and the grid wiring density of the second electrode pattern is less than the grid wiring density of the first electrode pattern; The electromagnetic coil layer includes a plurality of third electrode patterns, and an orthographic projection of the second electrode pattern on the substrate at least partially overlaps with an orthographic projection of the third electrode pattern on the substrate.

2. The touch module according to claim 1, characterized in that: The first electrode pattern includes a plurality of first electrode blocks and second electrode blocks alternately arranged along a first direction, and the second electrode pattern includes a plurality of first electrode grids and second electrode grids alternately arranged along the first direction, and the first direction intersects with the second direction; The first electrode block and the first electrode grid are connected to each other to form a first touch electrode, and the second electrode block and the second electrode grid are connected to each other to form a second touch electrode; Preferably, the first touch electrode comprises the first electrode block and the first electrode grid adjacent to each other along the second direction; Preferably, two first touch electrodes adjacent to each other along the first direction and / or the second direction are electrically connected to each other; Preferably, the second touch electrode comprises the second electrode block and the second electrode network located on both sides of the second electrode block in the second direction; Preferably, the second touch electrodes adjacent to each other along the first direction and / or the second direction are electrically connected to each other.

3. The touch module according to claim 2, characterized in that: The electromagnetic coil layer further includes a bridge pattern, and two adjacent second touch electrodes along the first direction are electrically connected via the bridge pattern; Preferably, an insulating layer is further provided between the touch electrode layer and the electromagnetic coil layer, the insulating layer comprises a plurality of connecting through holes, and the bridge pattern is electrically connected to the second touch electrode through the connecting through holes; Preferably, the bridge pattern includes a plurality of connection ends, and the connection ends are electrically connected to the second touch electrodes through the connection through holes; Preferably, the bridge pattern further includes a plurality of conductive units, and the conductive unit includes at least two connecting paths connected in parallel and an opening formed by the connecting paths; Preferably, the connection path is a metal wiring.

4. The touch module according to claim 3, characterized in that: The orthographic projection of the bridge pattern on the substrate at least partially overlaps with the orthographic projection of the first electrode block on the substrate; Preferably, the first electrode block further includes a main body and a relief portion, the grid wiring density of the relief portion is smaller than the grid wiring density of the main body, and the orthographic projection of the relief portion on the substrate at least partially overlaps with the orthographic projection of the bridge pattern on the substrate.

5. The touch module according to claim 2, characterized in that: The touch electrode repeating unit further includes a second connecting line, a plurality of the second touch electrodes are electrically connected along the first direction to form a second electrode row, and the plurality of the second electrode rows are also electrically connected to each other through the second connecting line; Preferably, the second connecting line is arranged on at least one of two opposite sides of the touch electrode repeating unit along the first direction; Preferably, a line width of the second connecting line is 2 μm to 4 μm, and a minimum distance between the second connecting line and the first touch electrode is 3 μm to 7 μm.

6. The touch module according to claim 2, characterized in that: The touch electrode repeating unit further includes a first connecting line, a plurality of the first touch electrodes are electrically connected along the second direction to form a first electrode column, and the plurality of the first electrode columns are also electrically connected via the first connecting line; Preferably, two adjacent first electrode grids located in the same second electrode pattern are electrically connected via the first connecting line; Preferably, the shape of the first connecting line includes an M shape.

7. The touch module according to claim 6, characterized in that: The orthographic projection of the second electrode pattern on the substrate is located within the orthographic projection of the third electrode pattern on the substrate; Preferably, the grid wiring width of the third electrode pattern is greater than or equal to the grid wiring width of the second electrode pattern; Preferably, the grid line width of the second electrode pattern is 2 μm to 4 μm, and the grid line width of the third electrode pattern is 3 μm to 7 μm; Preferably, the orthographic projection of the first connecting line on the substrate is located within the orthographic projection of the third electrode pattern on the substrate; Preferably, the grid routing width of the first connecting wires is 2 μm to 4 μm.

8. A display panel, characterized in that: It comprises the touch module as claimed in any one of claims 1 to 7.

9. The display panel according to claim 8, characterized in that: The display panel further comprises a light-emitting layer, and the touch electrode layer and the electromagnetic coil layer are located on a light-emitting side of the light-emitting layer; The light-emitting layer includes a plurality of light-emitting units arranged in an array, wherein the light-emitting unit includes a light-emitting portion and a non-light-emitting area arranged around the light-emitting portion, and the orthographic projection of the grid wiring structure on the light-emitting layer is located in the non-light-emitting area.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 8 to 9.

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