Touch module and display device

Abstract

The present disclosure provides a touch module and a display device. The touch module comprises a first electrode layer, a second electrode layer, a pressure sensitive layer and a third electrode layer which are stacked. The first electrode layer and the second electrode layer constitute an electromagnetic loop function layer. The pressure sensitive layer is located between the second electrode layer and the third electrode layer. The second electrode layer, the third electrode layer and the pressure sensitive layer constitute a pressure sensitive function layer. In the touch module, the pressure sensitive function layer and the electromagnetic loop function layer are integrated together, which is conducive to the thinning of the touch module.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of touch control, in particular, to a touch module and a display device. BACKGROUND

[0002] With the rapid development of touch technology, consumers have more and more functional requirements for touch products. For example, in some touch products, in order to improve the user experience such as handwriting experience and gesture operation, in addition to the capacitive touch film layer, other functional layers also need to be set. However, the setting of other functional layers may increase the overall manufacturing cost of the touch product and increase the overall thickness of the touch product. Therefore, how to ensure the normal working of the touch and other functional layers without setting too many film layer structures, so that the handwriting experience and gesture operation experience of the touch product are improved, has become a problem to be solved. SUMMARY

[0003] The present disclosure provides a touch module and a display device, by sharing one electrode layer for the pressure sensitive functional layer and the electromagnetic loop functional layer in the touch module, the functions of electromagnetic touch, pressure detection and capacitive touch are realized on the basis of reducing the thickness and cost of the touch module.

[0004] The first aspect of the present disclosure provides a touch module, comprising a first electrode layer, a second electrode layer, a pressure sensitive layer and a third electrode layer which are stacked. The first electrode layer and the second electrode layer constitute an electromagnetic loop functional layer, the pressure sensitive layer is located between the second electrode layer and the third electrode layer, and the second electrode layer, the third electrode layer and the pressure sensitive layer constitute a pressure sensitive functional layer.

[0005] In the above scheme, the pressure sensitive functional layer and the electromagnetic loop functional layer share the design of the second electrode layer, by integrating the pressure sensitive functional layer and the electromagnetic loop functional layer together, the setting of the electrode layer is reduced, and the thinning of the touch module is realized.

[0006] In one specific embodiment of the first aspect of the present disclosure, the first electrode layer comprises a plurality of first electromagnetic loop electrodes extending along a first direction, and a first opening extending along the first direction is formed between adjacent first electromagnetic loop electrodes. The second electrode layer comprises a plurality of second electromagnetic loop electrodes extending along a second direction, and a second opening extending along the second direction is formed between adjacent second electromagnetic loop electrodes, and the first direction and the second direction intersect.

[0007] In the above scheme, by forming the first electromagnetic loop electrode and the second electromagnetic loop electrode on the first electrode layer and the second electrode layer respectively, the coordinates of the electromagnetic pen touch in the first direction and the second direction are determined, so that the function of electromagnetic touch is realized.

[0008] Optionally, the first opening and the second opening are both U-shaped. In this way, the first electromagnetic coil electrode and the second electromagnetic coil electrode are arranged in the U-shaped opening, which can improve the sensitivity of the electromagnetic touch function.

[0009] In one specific embodiment of the first aspect of the present disclosure, the second electrode layer comprises a first pressure-sensitive electrode, and the third electrode layer comprises a second pressure-sensitive electrode, and the first pressure-sensitive electrode, the second pressure-sensitive electrode and the pressure-sensitive layer constitute a pressure-sensitive functional layer.

[0010] In the above scheme, the second electromagnetic coil electrode and the first pressure-sensitive electrode share the second electrode layer, so as to simplify the structure of the touch module, thereby facilitating the thinning of the touch module.

[0011] Optionally, the second electrode layer comprises a plurality of second electromagnetic coil electrodes and a plurality of first pressure-sensitive electrodes, the plurality of second electromagnetic coil electrodes are arranged at intervals, the first pressure-sensitive electrodes extend along the second direction and are located between adjacent second electromagnetic coil electrodes. In this way, a scheme for simultaneously forming the second electromagnetic coil electrode and the first pressure-sensitive electrode by using the second electrode layer is provided, which improves the thinness of the touch module and also improves the applicability of the scheme of the present disclosure.

[0012] Optionally, the second electromagnetic coil electrode is multiplexed as the first pressure-sensitive electrode, that is, the second electrode layer is arranged as the second electromagnetic coil electrode as a whole. In this way, the design of multiplexing the second electromagnetic coil electrode as the first pressure-sensitive electrode simplifies the film layer arrangement and improves the utilization rate of the second electrode layer.

[0013] In one specific embodiment of the first aspect of the present disclosure, the first electrode layer and the third electrode layer constitute a touch functional layer. The touch functional layer comprises a plurality of first touch electrodes arranged side by side, a plurality of second touch electrodes arranged side by side and a plurality of bridge electrodes, the first touch electrodes and the second touch electrodes cross each other, the first touch electrodes are disconnected into a plurality of first electrode blocks at the intersection with the second touch electrodes, and the first electrode blocks disconnected from each other are electrically connected by the bridge electrodes.

[0014] In the above scheme, the first electrode layer and the third electrode layer forming the touch functional layer are also used to form the first electromagnetic coil electrode and the first pressure-sensitive electrode. This design not only integrates capacitive touch, pressure detection and electromagnetic touch into one, but also eliminates the production process of externally attaching pressure detection and electromagnetic touch, thereby reducing the thickness and production cost of the touch module.

[0015] In one specific embodiment of the first aspect of the present disclosure, the touch module further comprises an insulating layer between the first electrode layer and the third electrode layer.

[0016] In the above scheme, the insulating layer can prevent the first touch electrode and the second touch electrode from directly contacting each other in the normal working state, thereby avoiding short circuit problems, stabilizing the current path and reducing signal interference.

[0017] In one specific implementation of the first aspect of the present disclosure, the second electrode layer is located on a side of the third electrode layer facing away from the first electrode layer, the third electrode layer comprises the first touch electrode and the second touch electrode, the first electrode layer comprises the bridge electrode, and the second electromagnetic loop electrode is multiplexed as the first pressure-sensitive electrode.

[0018] In the above scheme, by multiplexing the second electromagnetic loop electrode as the first pressure-sensitive electrode, the integration of the touch module is improved, the process of the touch module is simplified, and the production cost is saved.

[0019] Optionally, the first touch electrode and / or the second touch electrode is multiplexed as a second pressure-sensitive electrode. In this way, by multiplexing at least one touch electrode as a second pressure-sensitive electrode, the integration of the touch module is effectively improved, and the load of the first touch electrode and the second touch electrode is reduced by using the pressure-sensitive layer, thereby optimizing the performance of the touch module.

[0020] In one specific implementation of the first aspect of the present disclosure, the first touch electrode comprises a plurality of first electrode blocks extending along a first direction, and the second touch electrode is a strip-shaped electrode extending along a second direction.

[0021] In one specific implementation of the first aspect of the present disclosure, the first touch electrode comprises a plurality of first electrode blocks extending along a first direction, the second touch electrode comprises a plurality of second electrode blocks extending along a second direction, the second electrode blocks disconnected from each other are electrically connected by a connecting electrode, and the connecting electrode is disposed in the same layer as the second touch electrode.

[0022] Optionally, the shapes of the first electrode blocks and the second electrode blocks are rhombic.

[0023] In one specific implementation of the first aspect of the present disclosure, the second electrode layer is located on a side of the first electrode layer facing away from the third electrode layer, the pressure-sensitive layer is located on a side of the second electrode layer facing the third electrode layer, the third electrode layer comprises the first touch electrode and the second touch electrode, the first electrode layer comprises the bridge electrode, and the second electromagnetic loop electrode is multiplexed as the first pressure-sensitive electrode.

[0024] In the above scheme, another structure of the touch module using the second electromagnetic loop electrode multiplexed as the first pressure-sensitive electrode is provided, which not only improves the integration of the touch module, but also improves the applicability of the scheme.

[0025] Optionally, the first touch electrode and / or the second touch electrode is multiplexed as a second pressure-sensitive electrode. In this way, the film layer design of the touch module is effectively simplified, which is conducive to realizing the thinning of the touch module.

[0026] In one specific implementation of the first aspect of the present disclosure, the first touch electrode includes a plurality of first electrode blocks extending along a first direction, the second touch electrode is a strip-shaped electrode extending along a second direction, and a projection of the first touch electrode on the first electrode layer falls outside the first electromagnetic loop electrode.

[0027] In the above solution, the first touch electrode and the first electromagnetic loop electrode do not overlap in space, which can avoid the first electromagnetic loop electrode from shielding the touch signal corresponding to the first touch electrode.

[0028] Optionally, a projection of the first electrode block and the bridge electrode on the first electrode layer falls within the first opening. In this way, not only the influence of the first electromagnetic loop electrode on the touch signal is avoided, but also the integration of the touch module is improved.

[0029] The second aspect of the present disclosure provides a display device, which includes the touch module in the first aspect described above and is located on a display side of a display panel. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A cross-sectional schematic view of a touch module according to an embodiment of the present disclosure.

[0031] Figure 2 A cross-sectional schematic view of a touch module according to another embodiment of the present disclosure.

[0032] Figure 3 A structural schematic view of an electromagnetic loop functional layer according to an embodiment of the present disclosure.

[0033] Figure 4 A structural schematic view of a first electromagnetic loop electrode of a touch module according to an embodiment of the present disclosure.

[0034] Figure 5 A structural schematic view of a second electromagnetic loop electrode of a touch module according to an embodiment of the present disclosure.

[0035] Figure 6 A structural schematic view of a second electrode layer of a touch module according to an embodiment of the present disclosure.

[0036] Figure 7 A structural schematic view of a pressure-sensitive functional layer according to an embodiment of the present disclosure.

[0037] Figure 8 A structural schematic view of a pressure-sensitive functional layer according to another embodiment of the present disclosure.

[0038] Figure 9 A structural schematic view of a pressure-sensitive functional layer according to another embodiment of the present disclosure.

[0039] Figure 10 A structure diagram of a pressure-sensitive functional layer according to another embodiment of the present disclosure.

[0040] Figure 11 A structure diagram of a touch functional layer according to an embodiment of the present disclosure.

[0041] Figure 12 A cross-sectional diagram of a touch module according to an embodiment of the present disclosure.

[0042] Figure 13 A cross-sectional diagram of a touch module according to another embodiment of the present disclosure.

[0043] Figure 14 A structure diagram of a pressure-sensitive functional layer according to an embodiment of the present disclosure.

[0044] Figure 15 A structure diagram of a pressure-sensitive functional layer according to another embodiment of the present disclosure.

[0045] Figure 16 A structure diagram of a touch functional layer according to an embodiment of the present disclosure.

[0046] Figure 17 A structure diagram of a pressure-sensitive functional layer according to another embodiment of the present disclosure.

[0047] Figure 18 A structure diagram of a first electromagnetic loop electrode and a touch functional layer according to an embodiment of the present disclosure.

[0048] Reference signs:

[0049] 110 - first electrode layer; 111 - first electromagnetic loop electrode; 112 - first opening;

[0050] 120 - second electrode layer; 121 - second electromagnetic loop electrode; 122 - second opening;

[0051] 130 - third electrode layer;

[0052] 140 - electromagnetic loop functional layer;

[0053] 150 - pressure-sensitive functional layer; 151 - pressure-sensitive layer; 152 - first pressure-sensitive electrode; 153 - second pressure-sensitive electrode;

[0054] 160 - touch functional layer; 161 - first touch electrode; 161a - first electrode block; 162 - second touch electrode; 162a - second electrode block; 163 - bridge electrode; 164 - connecting electrode;

[0055] 170 - insulating layer; X - first direction; Y - second direction. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present disclosure.

[0057] The display device with a touch screen can enable a user to directly operate on the display device through a finger, thereby improving user experience. However, for some application scenarios with high-precision input requirements, such as drawing, design, and handwritten notes, a combination of an electromagnetic loop functional layer and an electromagnetic pen needs to be used for implementation. The electromagnetic pen has the advantages of low price and small space occupation, and is easy to configure. However, the electromagnetic loop functional layer needs to be separately arranged in the display device to generate and sense RF signals (Radio Frequency Signal), which increases the manufacturing cost of the display device. Meanwhile, some requirements for enhanced interaction feedback, such as the requirement for simulating real writing, also need to be implemented by arranging a pressure-sensitive functional layer. For example, as a display device with a pressure detection function, it is a common design scheme to arrange the pressure-sensitive functional layer in the touch module of the display device. Therefore, in order to meet the requirements of users in different scenarios, without arranging too many film layer structures, it is an urgent problem to be solved to ensure that the touch function, the pressure detection function, and the electromagnetic touch function of the display device work normally.

[0058] In view of this, the touch module provided in the embodiments of the present disclosure includes a first electrode layer, a second electrode layer, a third electrode layer, and a pressure-sensitive layer arranged in a stack. The first electrode layer and the second electrode layer constitute an electromagnetic loop functional layer, the pressure-sensitive layer is located between the second electrode layer and the third electrode layer, and the second electrode layer, the third electrode layer, and the pressure-sensitive layer constitute a pressure-sensitive functional layer. In this way, the second electrode layer constitutes part of the pressure-sensitive functional layer while constituting part of the electromagnetic loop functional layer, thereby reducing the steps of film layer preparation and deposition, improving production efficiency, and improving the integration of the touch module.

[0059] It should be noted that the first electrode layer, the second electrode layer, the third electrode layer, and the pressure-sensitive layer arranged in a stack in the embodiments of the present disclosure emphasize the state of layering of the first electrode layer, the second electrode layer, the third electrode layer, and the pressure-sensitive layer, and the focus is on the fact that the multiple film layers are in a layered combination form, and there is no explicit limitation on the arrangement order of these film layers. Under the premise of meeting the order of the pressure-sensitive layer being located between the second electrode layer and the third electrode layer, there are multiple different arrangement modes between the first electrode layer, the second electrode layer, the third electrode layer, and the pressure-sensitive layer, which can be referred to the description in the following embodiments, and will not be described here.

[0060] In the following, the touch module and the display device according to at least one embodiment of the present disclosure are described in conjunction with the accompanying drawings. In addition, as shown in the drawings, in at least one embodiment of the present disclosure, a spatial rectangular coordinate system is established with the face on which the touch module is located as the reference to define the positions of various film layers in the touch module. In the spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the face on which the touch module is located, and the Z-axis is perpendicular to the face on which the touch module is located.

[0061] As shown in FIG. 1, the touch module provided by at least one embodiment of the present disclosure includes a first electrode layer 110, a third electrode layer 130, a pressure-sensitive layer 151, and a second electrode layer 120 which are sequentially stacked. Figure 1 Figure 3 As shown in FIG. 1, the touch module provided by at least one embodiment of the present disclosure includes a first electrode layer 110, a third electrode layer 130, a pressure-sensitive layer 151, and a second electrode layer 120 which are sequentially stacked. Figure 2 As shown in FIG. 1, the touch module provided by at least one embodiment of the present disclosure includes a first electrode layer 110, a third electrode layer 130, a pressure-sensitive layer 151, and a second electrode layer 120 which are sequentially stacked.

[0062] The embodiments of the present disclosure do not limit the thickness and material parameters of the film layers in the touch module. For example, the materials of the first electrode layer 110, the second electrode layer 120, and the third electrode layer 130 are conductive materials such as metal materials, and specifically can be metal elements such as copper, silver, aluminum, molybdenum, etc., or metal alloys such as titanium-aluminum-titanium alloy, copper-nickel alloy, molybdenum-aluminum-molybdenum alloy, etc. For example, the pressure-sensitive layer 151 can be a piezoelectric material or a piezoresistive material. For another example, in the case where the touch module includes a display function layer, the first electrode layer 110, the second electrode layer 120, and the third electrode layer 130 can be composed of a metal mesh, and the metal mesh is located at the pixel periphery in the display area of the display function layer, i.e., the non-light-emitting area in the display area, and the pressure-sensitive layer 151 can be a piezoelectric material such as an ink material, which is made by a coating process. In addition, the thickness parameters of different film layers can be limited according to the actual needs of the touch module, which is not described here.

[0063] It should be noted that the "titanium-aluminum-titanium alloy" means a film layer structure in which a titanium layer, an aluminum layer, and a titanium layer are sequentially stacked, and the "molybdenum-aluminum-molybdenum alloy" means a film layer structure in which a molybdenum layer, an aluminum layer, and a molybdenum layer are sequentially stacked.

[0064] ​Based on the touch module in the above embodiments, the present disclosure will next design the structure of the electromagnetic coil functional layer 140 in the touch module, and the specific scheme is as follows.

[0065] In a touch module provided in one embodiment of this disclosure, a first electrode layer 110 includes a first electromagnetic coil electrode 111 extending along a first direction, i.e., the X direction, and the first electromagnetic coil electrode 111 includes a plurality of first openings 112 extending along the X direction. A second electrode layer 120 includes a second electromagnetic coil electrode 121 extending along a second direction, i.e., the Y direction, and the second electromagnetic coil electrode 121 includes a plurality of second openings 122 extending along the Y direction, wherein the first direction and the second direction intersect, for example, the X direction and the Y direction are perpendicular.

[0066] In the touch module provided in at least one embodiment of this disclosure, the first opening 112 and the second opening 122 are U-shaped.

[0067] For example, such as Figure 3 , Figure 4 and Figure 5 As shown, the first electrode layer 110 includes a plurality of first electromagnetic coil electrodes 111, and the second electrode layer 120 includes a plurality of second electromagnetic coil electrodes 121. The first electromagnetic coil electrodes 111 and the second electromagnetic coil electrodes 121 constitute an electromagnetic coil functional layer 140. On the first electrode layer 110, the first electromagnetic coil electrodes 111 extend along a first direction, i.e., the X direction, and a U-shaped first opening 112 is formed between adjacent first electromagnetic coil electrodes 111. The plurality of first openings 112 are arranged side-by-side in a second direction, i.e., the Y direction, and each first opening 112 extends in the first direction, i.e., the X direction, perpendicular to the second direction. The second electromagnetic coil electrodes 121 extend along the second direction, i.e., the Y direction, and a U-shaped second opening 122 is formed between adjacent second electromagnetic coil electrodes 121. The plurality of second openings 122 are arranged side-by-side in the first direction, i.e., the X direction, and each second opening 122 extends in the second direction, i.e., the Y direction.

[0068] In the electromagnetic coil functional layer 140, the X-direction coil, i.e., the first electromagnetic coil electrode 111, and the Y-direction coil, i.e., the second electromagnetic coil electrode 121, play a crucial role. Specifically, the first electromagnetic coil electrode 111 is more sensitive to the change of electromagnetic signals in the horizontal direction, e.g., the X-direction. When the electromagnetic pen moves in the X-direction, the electrical signal induced in the first electromagnetic coil electrode 111 will change accordingly. By measuring and analyzing these changes, the position coordinate of the electromagnetic pen in the X-direction can be determined. Similarly, the second electromagnetic coil electrode 121 is mainly sensitive to the change of electromagnetic signals in the vertical direction, e.g., the Y-direction. When the electromagnetic pen moves in the Y-direction, the electrical signal in the second electromagnetic coil electrode 121 will change accordingly, so that the position of the electromagnetic pen in the Y-direction can be determined. If the electromagnetic pen moves on the touch module, in the process of moving, the first electromagnetic coil electrode 111 will generate electrical signals of different intensities and phases due to the change of the position of the electromagnetic pen in the X-direction, and the second electromagnetic coil electrode 121 will also have corresponding changes in electrical signals due to the change of the position of the electromagnetic pen in the Y-direction. By processing and calculating the corresponding electrical signals in the X-direction and the Y-direction, the coordinates of the electromagnetic pen in the X-direction and the Y-direction on the touch module can be accurately determined, so that accurate electromagnetic touch positioning can be realized.

[0069] With continued reference to Figure 4 and Figure 5 It can be seen that the openings corresponding to the first electromagnetic coil electrode 111 and the second electromagnetic coil electrode 121 are respectively arranged in a U shape, i.e., the shape of the first opening 112 is a U shape, and the shape of the second opening 122 is a U shape. Such a design not only increases the interaction area of the first electromagnetic coil electrode 111 and the second electromagnetic coil electrode 121 with external electromagnetic signals, improves the sensitivity of electromagnetic touch, but also reduces the mutual inductance between the first electromagnetic coil electrode 111 and the second electromagnetic coil electrode 121, thereby avoiding the occurrence of signal confusion and error problems by reducing the signal interference between the two electromagnetic coil electrodes.

[0070] It should be noted that the structure of the first electromagnetic coil electrode 111 and the second electromagnetic coil electrode 121 in the embodiments of the present disclosure is not limited to the above examples. For example, the first electromagnetic coil electrode 111 and the second electromagnetic coil electrode 121 can be, for example, Figure 3 , Figure 4 and Figure 5The first electrode layer 110 and the second electrode layer 120 can be an integrated structure, or can be a split structure formed by connecting structures including a plurality of electrode strips extending along the first direction or the second direction. For example, in the first electrode layer 110, the relative size and spacing of the first openings 112 corresponding to the first electromagnetic loop electrodes 111 can be the same or different, and in the second electrode layer 120, the relative size and spacing of the second openings 122 corresponding to the second electromagnetic loop electrodes 121 can be the same or different. In addition, the line width density of the first electromagnetic loop electrodes 111 on the first electrode layer 110, the line width density of the second electromagnetic loop electrodes 121 on the second electrode layer 120, and the relative size of the line width between the first electromagnetic loop electrodes 111 or the second electromagnetic loop electrodes 121 can be designed according to actual needs, and will not be described here.

[0071] In addition to the structure of the electromagnetic loop functional layer 140, the film layer structure of the pressure sensitive functional layer 150 is also designed in the embodiments of the present disclosure, and the specific scheme is as follows.

[0072] In the touch module provided in at least one embodiment of the present disclosure, the second electrode layer 120 includes the first pressure sensitive electrode 152, the third electrode layer 130 includes the second pressure sensitive electrode 153, and the first pressure sensitive electrode 152, the second pressure sensitive electrode 153 and the pressure sensitive layer 151 constitute the pressure sensitive functional layer 150.

[0073] As shown in Figure 6 , the second electrode layer 120 includes a plurality of second electromagnetic loop electrodes 121 and a first pressure sensitive electrode 152. The design of sharing the second electrode layer 120 by the second electromagnetic loop electrodes 121 and the first pressure sensitive electrode 152 can reduce the number of electrode layers in the touch module. As shown in Figure 7 , Figure 8 , Figure 9 and Figure 10 , the third electrode layer 130 opposite to the second electrode layer 120 is provided with a second pressure sensitive electrode 153 corresponding to the first pressure sensitive electrode 152, and the pressure sensitive layer 151 is located between the first pressure sensitive electrode 152 and the second pressure sensitive electrode 153, thereby constituting the pressure sensitive functional layer 150.

[0074] Specifically, when there is no pressure, there is a certain initial electrical state, such as a specific resistance value or capacitance value, between the first pressure sensitive electrode 152 and the second pressure sensitive electrode 153. Taking the structure of the pressure sensitive functional layer 150 as an example, when pressure is applied to the touch module, the pressure will cause the dielectric constant of the pressure sensitive layer 151 to change, thereby changing the capacitance value formed between the first pressure sensitive electrode 152 and the second pressure sensitive electrode 153, so as to perceive the size, position and distribution of the pressure and other information.

[0075] Based on the above embodiments, in the touch module provided by one of the embodiments of the present disclosure, the second electrode layer 120 includes a plurality of second electromagnetic loop electrodes 121 and a plurality of first pressure-sensitive electrodes 152, the plurality of second electromagnetic loop electrodes 121 are arranged at intervals, and the first pressure-sensitive electrodes 152 extend along the second direction and are located between adjacent second electromagnetic loop electrodes 121.

[0076] As shown in the example, Figure 6 the second electrode layer 120 includes a plurality of second electromagnetic loop electrodes 121 arranged side by side in the first direction (X direction) and arranged at intervals, each second electromagnetic loop electrode 121 extends in the second direction (Y direction), and is formed with a second opening 122 in the shape of a U, that is, the plurality of second electromagnetic loop electrodes 121 correspond to a plurality of second openings 122. The first pressure-sensitive electrode 152 is provided with a plurality of first pressure-sensitive electrodes 152, each of which extends along the second direction (Y direction) and is located between adjacent second electromagnetic loop electrodes 121.

[0077] Based on the above embodiments, in the touch module provided by another embodiment of the present disclosure, the second electromagnetic loop electrode 121 is multiplexed as the first pressure-sensitive electrode 152. In this way, not only the complexity and cost of the manufacturing process of the touch module are reduced, but also the integration of the touch module is improved.

[0078] As shown in the example, Figure 5 the second electromagnetic loop electrode 121 in the second electrode layer 120 is multiplexed as the first pressure-sensitive electrode 152, that is, the first pressure-sensitive electrode 152 extends in the second direction and is formed with a plurality of second openings 122 in the shape of a U extending along the second direction. The first pressure-sensitive electrode 152 can be a one-piece structure or a split structure formed by an electrode strip through a connecting structure, which can be designed according to actual needs, and will not be described here.

[0079] The embodiments of the present disclosure do not specifically limit the structure of the second pressure-sensitive electrode 153 constituting the pressure-sensitive functional layer 150 with the first pressure-sensitive electrode 152 and the pressure-sensitive layer 151 in the above embodiments. For example, as shown in the example, Figure 7 , Figure 8 the third electrode layer 130 is entirely used as the second pressure-sensitive electrode 153, or as shown in the example, Figure 9 , Figure 10 the third electrode layer 130 forms a plurality of second pressure-sensitive electrodes 153, the plurality of second pressure-sensitive electrodes 153 are arranged side by side in the second direction (Y direction), and each pressure-sensitive electrode extends in the first direction (X direction), or the second pressure-sensitive electrode 153 is integrated with the touch functional layer 160 corresponding to the touch module, which will be described in detail in the following embodiments, and will not be described here.

[0080] In addition to integrating the pressure-sensitive functional layer 150 and the electromagnetic coil functional layer 140 together, the present embodiment also integrates the touch functional layer 160 with the above functional layers, as detailed below.

[0081] In a touch module provided in one embodiment of this disclosure, a first electrode layer 110 and a third electrode layer 130 constitute a touch functional layer 160. The touch functional layer 160 includes multiple first touch electrodes 161 arranged in parallel, multiple second touch electrodes 162 arranged in parallel, and multiple bridge electrodes 163. The first touch electrodes 161 and the second touch electrodes 162 intersect each other, and the first touch electrodes 161 are broken into multiple first electrode blocks 161a at the intersection with the second touch electrodes 162. The disconnected first electrode blocks 161a are electrically connected through the bridge electrodes 163.

[0082] For example, such as Figure 11 As shown, the touch module also includes a touch function layer 160, which includes a plurality of first touch electrodes 161 and a plurality of second touch electrodes 162 formed by at least a portion of a first electrode layer 110 and a third electrode layer 130, as well as a plurality of bridge electrodes 163. The plurality of first touch electrodes 161 and the plurality of second touch electrodes 162 are each strip-shaped, mutually insulated, and intersecting. Each first touch electrode 161 extends along a first direction, i.e., the X direction, and each second touch electrode 162 extends along a second direction, i.e., the Y direction. Thus, the multiple first touch electrodes 161 and the multiple second touch electrodes 162 intersect, which is the aforementioned "intersecting" arrangement. At the intersection with the second touch electrodes 162, the first touch electrodes 161 break into a plurality of first electrode blocks 161a. The first electrode blocks 161a that are disconnected from each other are electrically connected through bridge electrodes 163, i.e., adjacent first electrode blocks 161a are electrically connected through bridge electrodes 163.

[0083] In this embodiment, the plurality of first touch electrodes 161 and the plurality of second touch electrodes 162 are used to realize touch detection. For example, the touch module is a mutual capacitance touch module. One of the first touch electrode 161 and the second touch electrode 162 can be a receiving electrode (RX) and the other can be a transmitting electrode (TX). The intersection of the first touch electrode 161 and the second touch electrode 162 forms a capacitor, that is, the area where the receiving electrode and the transmitting electrode intersect can form a touch capacitor. When a scanning signal is applied to the transmitting electrode, if the user's finger approaches the intersection point, a parasitic capacitance will be formed between the receiving electrode or the transmitting electrode and the user's finger. This parasitic capacitance will cause the voltage of the touch capacitor to fluctuate, that is, the capacitance value of the touch capacitor formed at the intersection point of the receiving electrode and the transmitting electrode will change. By detecting the receiving electrode where the voltage changes, the position of the touch capacitor with the changed capacitance value can be determined, that is, the touch position can be located, thereby realizing the function of capacitive touch.

[0084] Based on the above embodiments, in addition to the first touch electrode 161, the second touch electrode 162, and the bridge electrode 163, the touch function layer 160 also includes an insulating layer 170. This insulating layer 170 not only helps ensure the independence and accuracy of each touch electrode signal, improving the precision of the touch function, but also reduces the impact of external interference on the touch signal and protects the touch electrodes and other structures. The design scheme of incorporating the insulating layer 170 in the touch module will be described in detail below.

[0085] In one embodiment of the touch module provided in this disclosure, the touch module further includes an insulating layer 170 located between the first electrode layer 110 and the third electrode layer 130. The insulating layer 170 can be used for electrical insulation between adjacent electrode layers, and its material includes SiNx, SiOx, organic films, etc., or a combination of the above materials.

[0086] For example, such as Figure 12 As shown, the touch module includes a first electrode layer 110, an insulating layer 170, a third electrode layer 130, a pressure-sensitive layer 151, and a second electrode layer 120, which are stacked sequentially. Alternatively, as... Figure 13 As shown, the touch module includes a second electrode layer 120, a pressure-sensitive layer 151, a first electrode layer 110, an insulating layer 170, and a third electrode layer 130 stacked sequentially. The first electrode layer 110 and the third electrode layer 130 constitute a touch function layer 160, and the second electrode layer 120, the third electrode layer 130, and the pressure-sensitive layer 151 located between the second electrode layer 120 and the third electrode layer 130 constitute a pressure-sensitive function layer 150. The first electrode layer 110 and the second electrode layer 120 constitute an electromagnetic coil function layer 140.

[0087] The electrode structures in each functional layer, such as the touch functional layer 160, the electromagnetic loop functional layer 140, and the pressure-sensitive functional layer 150, are designed according to the design scheme of the different film layer positions in the touch module, and the specific scheme is as follows.

[0088] In the touch module provided in one embodiment of the present disclosure, the second electrode layer 120 is located on the side of the third electrode layer 130 away from the first electrode layer 110, the third electrode layer 130 includes the first touch electrode 161 and the second touch electrode 162, and the first electrode layer 110 includes the bridge electrode 163. The second electromagnetic loop electrode 121 is multiplexed as the first pressure-sensitive electrode 152. In the touch module provided in at least one embodiment of the present disclosure, the first touch electrode 161 and / or the second touch electrode 162 is multiplexed as the second pressure-sensitive electrode 153.

[0089] For example, as shown in Figure 11 , Figure 12 and Figure 14 , the touch module includes the first electrode layer 110, the second electrode layer 120, the third electrode layer 130, the insulating layer 170, and the pressure-sensitive layer 151. The insulating layer 170 is located between the first electrode layer 110 and the third electrode layer 130, the pressure-sensitive layer 151 is located on the side of the third electrode layer 130 away from the first electrode layer 110, and the second electrode layer 120 is located on the side of the pressure-sensitive layer 151 away from the first electrode layer 110. The first touch electrode 161 and the second touch electrode 162 in the touch functional layer 160 are arranged in the same layer, are formed by part of the third electrode layer 130, and the bridge electrode 163 connecting the first electrode block 161a of the first touch electrode 161 is formed by part of the first electrode layer 110. The first electrode layer 110 forms the first electromagnetic loop electrode 111 with a U-shaped opening, the second electrode layer 120 corresponds to the second electromagnetic loop electrode 121 with a U-shaped opening, and the second electromagnetic loop electrode 121 formed by the second electrode layer 120 on the side of the pressure-sensitive layer 151 away from the third electrode layer 130 is multiplexed as the first pressure-sensitive electrode 152. At the same time, at least part of the electrode structure formed by the third electrode layer 130 on the side of the pressure-sensitive layer 151 away from the second electrode layer 120, i.e., the first pressure-sensitive electrode 152, is multiplexed as the second pressure-sensitive electrode 153. In this way, no other film layer needs to be added to constitute the first pressure-sensitive electrode 152, thereby reducing the production cost.

[0090] For example, as shown in Figure 14 , in the touch module, the first touch electrode 161 in the third electrode layer 130 is multiplexed as the second pressure-sensitive electrode 153. Alternatively, as shown in Figure 9 , in the touch module, the second touch electrode 162 in the third electrode layer 130 is multiplexed as the second pressure-sensitive electrode 153. Alternatively, as shown in Figure 15As shown in the touch module, the first touch electrode 161 and the second touch electrode 162 in the third electrode layer 130 are multiplexed as the second pressure sensitive electrode 153. Multiplexing the first touch electrode 161 extending in the first direction (X direction) and the second touch electrode 162 extending in the second direction (Y direction) in the touch function layer 160 as the second pressure sensitive electrode 153 can improve the sensitivity of the pressure sensitive function layer.

[0091] It should be noted that the above examples only show the electrode structure in the pressure sensitive function layer 150, and the structure of the touch function layer 160, the structure of the electromagnetic coil function layer 140, and the signal connection relationship between the corresponding different electrodes in each function layer are not shown in the above examples and embodiments, which can be designed according to actual needs, and will not be described here.

[0092] In the touch module provided in an embodiment of the present disclosure, the first touch electrode 161 includes a plurality of first electrode blocks 161a extending along the first direction, and the second touch electrode 162 is a strip-shaped electrode extending along the second direction. Alternatively, the first touch electrode 161 includes a plurality of first electrode blocks 161a extending along the first direction, and the second touch electrode 162 includes a plurality of second electrode blocks 162a extending along the second direction, the second electrode blocks 162a that are disconnected from each other are electrically connected through the connecting electrode 164, and the connecting electrode 164 is disposed in the same layer as the second touch electrode 162.

[0093] In the touch module provided in at least one embodiment of the present disclosure, the shapes of the first electrode blocks 161a and the second electrode blocks 162a are diamond-shaped.

[0094] As shown in the touch module, Figure 11 and Figure 15 As shown in the touch module, in the third electrode layer 130 forming the touch electrode, the first touch electrode 161 is a block-shaped electrode (first electrode block 161a) extending along the first direction (X direction), and adjacent first electrode blocks 161a are electrically connected through the bridge electrode 163. The second touch electrode 162 is a plurality of strip-shaped electrodes arranged side by side in the first direction (X direction) and extending along the second direction (Y direction). Specifically, the shapes of the orthographic projections of the first touch electrode 161 and the second touch electrode 162 on the pressure sensitive layer 151 are rectangular, respectively, and the corresponding rectangle of the second touch electrode 162 is strip-shaped, and the size thereof is greater than the size of the corresponding rectangle of the first touch electrode 161.

[0095] As shown in the touch module, Figure 16As shown in the touch control module, in the third electrode layer 130 forming the touch control electrodes, the first touch control electrodes 161 are a plurality of rhombic electrodes, i.e., first electrode blocks 161a, extending along a first direction, and the second touch control electrodes 162 are a plurality of rhombic electrodes, i.e., second electrode blocks 162a, extending along a second direction, i.e., a Y direction, that is, the shapes of the first electrode blocks 161a and the second electrode blocks 162a are both rhombic. The bridge electrodes 163 connecting the first electrode blocks 161a are formed by a portion of the first electrode layer 110, and the connection electrodes 164 connecting the second electrode blocks 162a are formed by a portion of the third electrode layer 130, i.e., the connection electrodes 164 are arranged in the same layer as the second touch control electrodes 162.

[0096] It should be noted that the design of the first pressure-sensitive electrode 152 and the second pressure-sensitive electrode 153 in the touch control module in the embodiments of the present disclosure is not limited to the above examples and the structures shown in the drawings. For example, the shapes corresponding to the first electrode blocks 161a and the second electrode blocks 162a are not limited to the rectangles or rhombuses in the above examples, but can also be other polygons. For another example, as for the second pressure-sensitive electrode 153, especially when only the first touch control electrodes 161 or the second touch control electrodes 162 are used as the second pressure-sensitive electrode 153, the projection relationship in space between the first pressure-sensitive electrode 152 and the second pressure-sensitive electrode 153 can be designed according to actual needs, which will not be described here.

[0097] In the touch control module provided in another embodiment of the present disclosure, the second electrode layer 120 is located on a side of the first electrode layer 110 away from the third electrode layer 130, the pressure-sensitive layer 151 is located on a side of the second electrode layer 120 facing the third electrode layer 130, the third electrode layer 130 includes the first touch control electrodes 161 and the second touch control electrodes 162, the first electrode layer 110 includes the bridge electrodes 163, and the second electromagnetic coil electrode 121 is multiplexed as the first pressure-sensitive electrode 152. In the touch control module provided in at least one embodiment of the present disclosure, the first touch control electrodes 161 and / or the second touch control electrodes 162 are multiplexed as the second pressure-sensitive electrode 153.

[0098] For example, Figure 13 and Figure 17As shown, the touch module includes a first electrode layer 110, a second electrode layer 120, a third electrode layer 130, an insulating layer 170 and a pressure sensitive layer 151. The pressure sensitive layer 151 is located between the second electrode layer 120 and the first electrode layer 110, the insulating layer 170 is located on the side of the first electrode layer 110 away from the pressure sensitive layer 151, and the third electrode layer 130 is located on the side of the insulating layer 170 away from the first electrode layer 110. The third electrode layer 130 includes a first touch electrode 161 and a second touch electrode 162, and the first electrode layer 110 located on the side of the insulating layer 170 away from the third electrode layer 130 includes a bridge electrode 163. The first electrode layer 110 includes a first electromagnetic coil electrode 111 with a U-shaped opening, and the second electrode layer 120 includes a second electromagnetic coil electrode 121 with a U-shaped opening. The second electromagnetic coil electrode 121 located on the side of the pressure sensitive layer 151 away from the first electrode layer 110 is multiplexed as a first pressure sensitive electrode 152, and the first touch electrode 161 and the second touch electrode 162 included in the third electrode layer 130 located on the top layer are multiplexed as a second pressure sensitive electrode 153.

[0099] In the touch module provided in an embodiment of the present disclosure, the first touch electrode 161 includes a plurality of first electrode blocks 161a extending along a first direction, the second touch electrode 162 is a strip-shaped electrode extending along a second direction, and the orthographic projection of the first touch electrode 161 on the first electrode layer 110 falls outside the first electromagnetic coil electrode 111. In the touch module provided in at least one embodiment of the present disclosure, the orthographic projection of the first electrode block 161a and the bridge electrode 163 on the first electrode layer 110 falls within the first opening 112.

[0100] As shown in the examples of FIGS. 1A and 1B, Figure 11 Figure 17 and Figure 18 As shown in the touch module, in the third electrode layer 130 forming the touch electrode, the first touch electrode 161 includes a plurality of first electrode blocks 161a extending along the X direction, adjacent first electrode blocks 161a are electrically connected by a bridge electrode 163, and each first electrode block 161a is spatially non-overlapping with the first electromagnetic coil electrode 111, for example, the orthographic projection of the first electrode block 161a on the first electrode layer 110 falls within the first opening 112. The second touch electrode 162 is a plurality of strip-shaped electrodes arranged side by side in the X direction, and each second touch electrode 162 extends in the Y direction.

[0101] ​It should be noted that the structure of the touch module in this embodiment is not limited to the examples above. For example, the first touch electrode 161 or the second touch electrode 162 can be reused as the second pressure-sensitive electrode 153. For example, when the structure of the first electromagnetic coil electrode 111 is a design of multiple U-shaped electrodes arranged side by side, the orthogonal projection of the first electrode block 161a, i.e., the first touch electrode 161, on the first electrode layer 110 can fall between adjacent first electromagnetic coil electrodes 111. Furthermore, the touch module may also include a protective layer, which is located on the top layer, such as... Figure 12 As shown, the protective layer is located on the side of the second electrode layer 120 opposite to the pressure-sensitive layer 151, or, as... Figure 13 As shown, the protective layer is located on the side of the third electrode layer 130 opposite to the first electrode layer 110. The protective layer serves to protect the upper electrode layers, the second electrode layer 120 or the third electrode layer 130, from scratches and corrosion. The materials of the protective layer include SiNx, SiOx, organic films, and combinations thereof. All of these can be designed according to actual conditions and will not be elaborated upon here.

[0102] This disclosure does not limit the operation of touch modules with electromagnetic touch, pressure detection, and capacitive touch functions. For example, time division multiplexing (TDM) technology can be used to enable the touch module to operate normally, which will not be elaborated here.

[0103] This disclosure also provides a display device, which includes the touch module described in the above embodiments, and the touch module is located on the display side of the display panel. The structure of the touch module can be referred to the description of the above embodiments, and will not be repeated here.

[0104] In the embodiments of this disclosure, the display device may be an organic light-emitting diode display device, a liquid crystal display device, an electronic paper display device, etc.

[0105] For example, the display device in the embodiments of this disclosure can be any product or component with display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator.

[0106] It should be noted that the embodiments disclosed herein do not describe all the structures of the display device described above. To achieve the necessary functions of the display device, those skilled in the art can configure other structures according to specific application scenarios.

[0107] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications or equivalent substitutions made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A touch module, characterized in that, The first electrode layer, the second electrode layer, the pressure sensitive layer and the third electrode layer are arranged in a stack, The first electrode layer and the second electrode layer constitute an electromagnetic loop functional layer, the pressure sensitive layer is located between the second electrode layer and the third electrode layer, and the second electrode layer, the third electrode layer and the pressure sensitive layer constitute a pressure sensitive functional layer; The first electrode layer comprises a plurality of first electromagnetic loop electrodes extending along a first direction, and a first opening extending along the first direction is arranged between adjacent first electromagnetic loop electrodes, and The second electrode layer comprises a plurality of second electromagnetic loop electrodes extending along a second direction, and a second opening extending along the second direction is arranged between adjacent second electromagnetic loop electrodes, and the first direction and the second direction intersect; The second electrode layer comprises a first pressure sensitive electrode, the third electrode layer comprises a second pressure sensitive electrode, and the first pressure sensitive electrode, the second pressure sensitive electrode and the pressure sensitive layer constitute the pressure sensitive functional layer; The first electrode layer and the third electrode layer constitute a touch functional layer, and the touch functional layer comprises a plurality of first touch electrodes arranged side by side, a plurality of second touch electrodes arranged side by side and a plurality of bridge electrodes, the first touch electrodes and the second touch electrodes intersect with each other, the first touch electrodes are disconnected into a plurality of first electrode blocks at intersections with the second touch electrodes, and the first electrode blocks disconnected from each other are electrically connected through the bridge electrodes; The second electrode layer is located on a side of the third electrode layer away from the first electrode layer, the third electrode layer comprises the first touch electrodes and the second touch electrodes, the first electrode layer comprises the bridge electrodes, the second electromagnetic loop electrodes are multiplexed as the first pressure sensitive electrodes, the first touch electrodes and / or the second touch electrodes are multiplexed as the second pressure sensitive electrodes, or the second electrode layer is located on a side of the first electrode layer away from the third electrode layer, the pressure sensitive layer is located on a side of the second electrode layer facing the third electrode layer, the third electrode layer comprises the first touch electrodes and the second touch electrodes, the first electrode layer comprises the bridge electrodes, and the second electromagnetic loop electrodes are multiplexed as the first pressure sensitive electrodes, and the first touch electrodes and / or the second touch electrodes are multiplexed as the second pressure sensitive electrodes. 2.The touch module according to claim 1, characterized in that, The first opening and the second opening are both U-shaped. 3.The touch module according to claim 1, characterized in that, The second electrode layer comprises a plurality of second electromagnetic loop electrodes and a plurality of first pressure sensitive electrodes, the plurality of second electromagnetic loop electrodes are arranged at intervals, the first pressure sensitive electrodes extend along the second direction and are located between adjacent second electromagnetic loop electrodes.

4. The touch module according to claim 1, wherein, Further comprising an insulating layer, wherein the insulating layer is located between the first electrode layer and the third electrode layer.

5. The touch module according to claim 1, wherein The first touch electrodes comprise a plurality of first electrode blocks extending along the first direction, and the second touch electrodes are strip-shaped electrodes extending along the second direction; Or The first touch electrode comprises a plurality of first electrode blocks extending along the first direction, the second touch electrode comprises a plurality of second electrode blocks extending along the second direction, the second electrode blocks disconnected from each other are electrically connected through a connecting electrode, and the connecting electrode is arranged in the same layer as the second touch electrode.

6. The touch module according to claim 5, wherein, The first electrode block and the second electrode block are in a rhombic shape.

7. The touch module according to claim 1, wherein, The first touch electrode comprises a plurality of first electrode blocks extending along the first direction, the second touch electrode is a strip-shaped electrode extending along the second direction, and the orthographic projection of the first touch electrode on the first electrode layer falls outside the first electromagnetic loop electrode. 8.The touch module according to claim 7, characterized in that, The orthographic projection of the first electrode block and the bridge electrode on the first electrode layer falls within the first opening.

9. A display device, characterized by comprising: The display panel comprises a display panel and the touch module of any one of claims 1-8, wherein the touch module is located on the display side of the display panel.

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