Touch module, touch screen and electronic equipment

Abstract

The invention provides a touch module, a touch screen and electronic equipment, the touch module comprises a plurality of touch units, each touch unit comprises a first electrode and a second electrode, each first electrode comprises a plurality of first sub-electrodes and a plurality of first connecting parts, each first sub-electrode extends along a first direction, the plurality of first sub-electrodes are arranged along a second direction, the first connecting parts are connected with the first sub-electrodes, and the second connecting parts are connected with the first sub-electrodes. Each first connecting part is connected with two adjacent first sub-electrodes, so that the plurality of first sub-electrodes are continuously conducted along the second direction; the second electrode and the first electrode are arranged in an insulated mode, the first electrode comprises a plurality of second sub-electrodes, the second sub-electrodes extend in the first direction, each second sub-electrode is arranged between every two adjacent first sub-electrodes, and each second sub-electrode is continuously conducted in the first direction. According to the touch unit, the electrode impedance can be reduced, the signal ratio can be increased, each touch unit can form a plurality of capacitive nodes, touch signals are enhanced, and the touch performance of a touch screen is improved.

Description

Technical Field

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

[0002] At present, the touch screen is an important component of most intelligent display devices and an important medium for realizing human-computer interaction. The touch screen generally includes driving electrodes and sensing electrodes, wherein the driving electrodes and the sensing electrodes are arranged alternately.

[0003] In the related art, the driving electrodes and sensing electrodes of the touch screen are generally designed in a diamond or cross shape. However, such a touch pattern design generally has the problem that the driving electrodes and the sensing electrodes have large impedances and the signals are difficult to detect, which affects the touch performance of the touch screen. Summary of the invention

[0004] The present application provides a touch module, a touch screen and an electronic device to improve the touch performance of the touch screen.

[0005] In a first aspect, the present application provides a touch module, comprising a plurality of touch units, each of the touch units comprising:

[0006] A first electrode, comprising a plurality of first sub-electrodes and a plurality of first connecting portions, wherein the first sub-electrodes extend along a first direction, and the plurality of first sub-electrodes are arranged along a second direction, and each of the first connecting portions is connected between two adjacent first sub-electrodes, so that the plurality of first sub-electrodes are continuously conductive along the second direction; wherein the first direction is perpendicular to the second direction; and

[0007] The second electrode is insulated from the first electrode. The first electrode includes a plurality of second sub-electrodes. The second sub-electrodes extend along the first direction. Each of the second sub-electrodes is disposed between two adjacent first sub-electrodes, and each of the second sub-electrodes is continuously conductive along the first direction.

[0008] In a second aspect, the present application further provides a touch screen, comprising a display module and the touch module as described above, wherein the touch module is stacked on one side of the display module.

[0009] In a third aspect, the present application also provides an electronic device, comprising the touch screen as described above.

[0010] In the touch module provided by the embodiment of the present application, each first sub-electrode of the first electrode extends along the first direction, each second sub-electrode of the second electrode extends along the first direction, and the multiple first sub-electrodes of the first electrode are arranged along the second direction, and each second sub-electrode is arranged between two adjacent first sub-electrodes. Then, the first sub-electrode and the second sub-electrode can be set to be roughly strip-shaped, so that the driving electrode and the sensing electrode of the touch module are set to be roughly strip-shaped, which can shorten the flow path of the current and effectively reduce the impedance value of the electrode; moreover, the strip-shaped design can increase the boundary length of the junction between the first electrode and the second electrode, which can improve the signal ratio when the finger touches the touch screen, making the touch signal easier to detect, and improving the touch performance of the touch screen. Moreover, the first sub-electrode and the second sub-electrode can be set to be roughly strip-shaped, which can simplify the entire touch pattern structure and layout of the touch module, facilitate the production of the touch module, and improve production efficiency.

[0011] In addition, each first connecting portion of the first electrode in the embodiment of the present application connects two adjacent first sub-electrodes, so that multiple first sub-electrodes of the first electrode are continuously conductive along the second direction, and each second sub-electrode of the second electrode is continuously conductive along the first direction. Then, each second sub-electrode of the second electrode and the first connecting portion of the first electrode will form at least one capacitive node at the intersection. Then, multiple capacitive nodes can be formed in a touch unit of the touch module of the embodiment of the present application, which can increase the coupling capacitance between the first electrode and the second electrode, that is, the coupling capacitance between the driving electrode and the sensing electrode can be increased, thereby increasing the capacitance change caused by finger touch, reducing the suspension effect of the touch screen, enhancing the touch signal, reducing the phenomenon of broken touch or touch jitter, and further improving the touch performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the structure of a touch module of a touch screen in the related art.

[0014] Figure 2 A schematic diagram of the structure of a touch screen provided in an embodiment of the present application.

[0015] Figure 3 A schematic diagram of a touch module of a touch screen according to an embodiment of the present application.

[0016] Figure 4This is a first structural schematic diagram of a touch unit of a touch module according to an embodiment of the present application.

[0017] Figure 5 for Figure 4 The structure shown in is a cross-sectional view along section AA.

[0018] Figure 6 Schematic diagram of the second structure of the touch unit of the touch module according to the embodiment of the present application.

[0019] Figure 7 for Figure 6 The schematic diagram of a part of the structure shows that the touch control units are arranged in a matrix.

[0020] Figure 8 This is a third structural schematic diagram of the touch unit of the touch module according to an embodiment of the present application.

[0021] Fig. 9 for Figure 8 The schematic diagram of a part of the structure shows that the touch control units are arranged in a matrix.

[0022] Fig.10 This is a fourth structural schematic diagram of the touch unit of the touch module according to an embodiment of the present application.

[0023] Fig.11 This is a fifth structural schematic diagram of the touch unit of the touch module according to an embodiment of the present application.

[0024] Fig.12 This is a sixth structural schematic diagram of the touch unit of the touch module according to an embodiment of the present application.

[0025] Fig.13 A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0026] Fig.14 A second structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be combined with the attached examples of the present application Figure 1 To Attachment Fig.14 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0029] The touch screen is an important component of current intelligent display devices and an important medium for human-computer interaction. Figure 1 , Figure 1 FIG. 2 is a schematic diagram of the structure of a touch module of a touch screen in the related art. Generally speaking, a touch screen includes driving electrodes (TX) and sensing electrodes (RX) that are intersecting and insulated from each other.

[0030] In the related art, the touch electrodes and the sensing electrodes are usually designed to be in a diamond shape or a cross shape, such as Figure 1 As shown, Figure 1 The figure shows a typical touch pattern design of a touch module, in which the driving electrodes and sensing electrodes are designed in a diamond shape. However, such a touch pattern design generally has the problem of large impedance of the driving electrodes and sensing electrodes, and the signal is difficult to detect, which affects the touch performance of the touch screen, such as the signal-to-noise ratio (SNR), suspension performance (Low Ground Mass), and linear accuracy.

[0031] To solve the above problems, the present application provides a touch module and a touch screen. Specifically, the touch module provided in the embodiment of the present application is applied to the touch screen to improve the touch performance of the touch screen.

[0032] Please refer to Figure 2 , Figure 2 The structure diagram of the touch screen provided in the embodiment of the present application is as follows: The touch screen 200 comprises a display module 2002 and a touch module 2001 , wherein the touch module 2001 is stacked on one side of the display module 2002 .

[0033] The display module 2002 has a light-emitting side and a backlight side opposite to each other. It can be understood that the light-emitting side is the side of the display module 2002 used to display the image. When the touch screen 200 is applied to an electronic device, the light-emitting side is the side of the display module 2002 facing the outside of the electronic device; the backlight side is the other side of the display module 2002 opposite to the light-emitting side. When the touch screen 200 is applied to an electronic device, the backlight side is the side of the display module 2002 facing the inside of the electronic device. In some embodiments, the touch module 2001 is stacked on the light-emitting side of the display module 2002. Specifically, an adhesive layer 2003 may be further provided between the touch module 2001 and the display module 2002, and the touch module 2001 may be attached to the light-emitting side of the display module 2002 through the adhesive layer 2003.

[0034] In some other implementations, the touch module 2001 may also be disposed on the backlight side of the display module 2002 .

[0035] Please refer to Figure 3 and Figure 4 , Figure 3is a schematic diagram of a touch module of a touch screen according to an embodiment of the present application, Figure 4 2 is a first structural diagram of a touch control unit of a touch control module according to an embodiment of the present application. The touch control module 2001 includes a plurality of touch control units 210. The plurality of touch control units 210 may be arranged in an array, and any two adjacent touch control units 210 are electrically connected.

[0036] Each touch unit 210 includes a first electrode 211 and a second electrode 212. The first electrode 211 includes a plurality of first sub-electrodes 2111 and a plurality of first connecting portions 2112. The first sub-electrodes 2111 extend along the first direction, and the plurality of first sub-electrodes 2111 are arranged along the second direction. Each first connecting portion 2112 connects two adjacent first sub-electrodes 2111, so that the plurality of first sub-electrodes 2111 are continuously conductive along the second direction. The second electrode 212 is insulated from the first electrode 211, and includes a plurality of second sub-electrodes 2121. The second sub-electrodes 2121 extend along the first direction, and each second sub-electrode 2121 is arranged between two adjacent first sub-electrodes 2111, and each second sub-electrode 2121 is continuously conductive along the first direction.

[0037] The plurality of first sub-electrodes 2111 are arranged along the second direction, and each second sub-electrode 2121 is disposed between adjacent first sub-electrodes 2111 . That is, in one touch unit 210 , the first sub-electrodes 2111 and the second sub-electrodes 2121 are alternately arranged along the second direction.

[0038] The first direction and the second direction are perpendicular to each other. Figure 4 A plane coordinate system XOY is established at a vertex of the touch unit 210. The first direction can be the Y-axis direction of the plane coordinate system, which is also commonly referred to as the longitudinal direction. When the touch screen 200 is applied to an electronic device, the first direction can be the length direction of the electronic device. Of course, in other embodiments, the first direction can also be the X-axis direction of the plane coordinate system, which is also commonly referred to as the lateral direction. When the touch screen 200 is applied to an electronic device, the first direction can be the width direction of the electronic device. This embodiment of the application only takes the first direction as Figure 4 The Y-axis direction of the plane coordinate system and the X-axis direction of the plane coordinate system are used as an example for explanation.

[0039] Optionally, the first electrode 211 may be one of the driving electrode TX and the sensing electrode RX, and the second electrode 212 may be the other of the driving electrode TX and the sensing electrode RX. The embodiment of the present application is described by taking the first electrode 211 as the driving electrode TX and the second electrode 212 as the sensing electrode RX as an example.

[0040] The first sub-electrode 2111 extends along the first direction, the second sub-electrode 2121 also extends along the first direction, and the first sub-electrode 2111 and the second sub-electrode 2121 are arranged alternately along the second direction, then, the first sub-electrode 2111 and the second sub-electrode 2121 can be set to be roughly strip-shaped, that is, the driving electrode and the sensing electrode of the touch module 2001 are set to be roughly strip-shaped, which can shorten the flow path of the current and effectively reduce the impedance value of the driving electrode and the sensing electrode; moreover, the first sub-electrode 2111 and the second sub-electrode 2121 can be set to be roughly strip-shaped, which can increase the boundary length of the junction between the first electrode 211 and the second electrode 212, and can improve the signal ratio when a finger touches the touch screen 200, so that the touch signal is easier to detect, and the touch performance of the touch screen 200 can be improved.

[0041] It should be pointed out that, in the present application, the first sub-electrode 2111 and the second sub-electrode 2121 can be arranged in a strip shape, which can simplify the touch pattern structure and layout of the touch module 2001 compared to the touch module using diamond electrodes or cross-shaped electrodes in the related art, facilitate the production of the touch module 2001, and improve production efficiency.

[0042] Each first connecting portion 2112 connects two adjacent first sub-electrodes 2111. In other words, a first connecting portion 2112 is arranged between each two adjacent first sub-electrodes 2111, so that the multiple first sub-electrodes 2111 of the first electrode 211 are continuously conductive along the second direction, so that the electrical signal can flow from one end of the first electrode 211 to the other end along the second direction.

[0043] Since one second sub-electrode 2121 is disposed between two adjacent first sub-electrodes 2111, to achieve continuous conduction of each second sub-electrode 2121 of the second electrode 212 along the first direction, the first electrode 211 and the second electrode 212 may be disposed in the same layer, and the second sub-electrodes 2121 need to be disconnected by the first electrode 211 (first connecting portion 2112) to achieve mutual insulation, and other connecting structures may be disposed in another layer to connect the disconnected second sub-electrodes 2121. In this way, each second sub-electrode 2121 of the second electrode 212 is continuously conducted along the first direction, so that the electrical signal can flow from one end of the second electrode 212 to the other end along the second direction.

[0044] It can be understood that, since each second sub-electrode 2121 of the second electrode 212 is continuously conductive along the first direction, each second sub-electrode 2121 of the second electrode 212 and the first electrode 211 (first connecting portion 2112) will form at least one capacitive node at the intersection. For example, when the number of the first connecting portion 2112 is one, each second sub-electrode 2121 and a first connecting portion 2112 form a capacitive node at the intersection. Compared with the touch module in the related art using a cross-shaped diamond Electrode and cross-shaped electrode (there is only one capacitive node in one touch unit), multiple capacitive nodes can be formed in one touch unit 210 of the touch module 2001 of the present application, which can increase the coupling capacitance between the first electrode 211 and the second electrode 212, that is, the coupling capacitance between the driving electrode TX and the sensing electrode RX can be increased, thereby increasing the capacitance change caused by finger touch, reducing the suspension effect of the touch screen 200, enhancing the touch signal, reducing the phenomenon of disconnection or touch jitter, and further improving the touch performance.

[0045] In the touch module 2001 provided in the embodiment of the present application, each first sub-electrode 2111 of the first electrode 211 extends along the first direction, each second sub-electrode 2121 of the second electrode 212 extends along the first direction, and the multiple first sub-electrodes 2111 of the first electrode 211 are arranged along the second direction, and each second sub-electrode 2121 is arranged between two adjacent first sub-electrodes 2111. Then, the first sub-electrode 2111 and the second sub-electrode 2121 can be set to be roughly strip-shaped, so that the driving electrode and the sensing electrode of the touch module 2001 are set to be roughly strip-shaped, which can shorten the current flow path and effectively reduce the impedance value of the electrode; moreover, the strip design can increase the boundary length of the junction between the first electrode 211 and the second electrode 212, which can improve the signal ratio when a finger touches the touch screen 200, make the touch signal easier to detect, and improve the touch performance of the touch screen 200. Furthermore, the first sub-electrode 2111 and the second sub-electrode 2121 may be substantially strip-shaped, which may simplify the entire touch pattern structure and layout of the touch module 2001 , facilitate the production of the touch module 2001 , and improve production efficiency.

[0046] In addition, each first connecting portion 2112 of the first electrode 211 of the embodiment of the present application connects two adjacent first sub-electrodes 2111, so that multiple first sub-electrodes 2111 of the first electrode 211 are continuously conductive along the second direction, and each second sub-electrode 2121 of the second electrode 212 is continuously conductive along the first direction. Then, each second sub-electrode 2121 of the second electrode 212 and the first electrode 211 (first connecting portion 2112) will form at least one capacitive node at the intersection. Then, multiple capacitive nodes can be formed in a touch unit 210 of the touch module 2001 of the embodiment of the present application, which can increase the coupling capacitance between the first electrode 211 and the second electrode 212, that is, the coupling capacitance between the driving electrode and the sensing electrode can be increased, thereby increasing the capacitance change caused by finger touch, reducing the suspension effect of the touch screen 200, enhancing the touch signal, reducing the phenomenon of touch disconnection or touch jitter, and further improving the touch performance.

[0047] The first sub-electrode 2111 and the second sub-electrode 2121 can both be made of a metal mesh structure (Metal Mesh, MM). It should be noted that: Figure 4 The line markings in the figure are only used to distinguish the first electrode 211 from the second electrode 212 and are not used to show the specific shape of the metal grid. In practical applications, the metal grid may be a grid structure formed by intersecting metal lines, which can avoid blocking the pixels in the display module 2002.

[0048] The first connection portion 2112 may be made of a metal mesh structure. Optionally, the metal mesh structure of the first connection portion 2112 may be integrated with the metal mesh structure of the first sub-electrode 2111 to ensure the connection reliability between the first connection portion 2112 and the first sub-electrode 2111, thereby ensuring the reliability of the touch screen 200.

[0049] The first sub-electrode 2111 and the second sub-electrode 2121 may be separated by a break in the metal grid, that is, the metal grid structure of the first sub-electrode 2111 is not in contact with the metal grid structure of the second sub-electrode 2121, thereby achieving mutual insulation between the first electrode 211 and the second electrode 212. The width of the break is less than or equal to 5 micrometers.

[0050] Optionally, the first sub-electrode 2111 and the second sub-electrode 2121 may be separated by setting a virtual electrode. For example, a metal grid structure of a fourth virtual electrode may be set between the grids of the first sub-electrode 2111 and the second sub-electrode 2121 to insulate and isolate the first electrode 211 from the second electrode 212. The width of the fourth virtual electrode is less than or equal to twice the pixel width (2Pixel) and greater than or equal to half the pixel width (Pixel). It is understood that the pixel width is the width of each pixel in the display module 2002 on one side of the touch module 2001.

[0051] It should be noted that the width design of the fracture and the width design of the virtual electrode are obtained by the inventor of the present application after a large number of experiments. The experiments have proved that such a width design can make the mutual capacitance value of the first electrode 211 and the second electrode 212 within an appropriate range, thereby maximizing the performance of the touch screen.

[0052] For example, please refer to Figure 4 Each second sub-electrode 2121 includes at least two sub-electrode parts spaced apart, and a first connecting part 2112 is disposed between two adjacent sub-electrode parts. Each touch control unit 210 also includes a plurality of bridge keys 213 stacked with the plurality of first connecting parts 2112, and two adjacent sub-electrode parts spaced apart are electrically connected via a bridge key 213.

[0053] The bridge key 213 and the first connection portion 2112 are stacked, that is, the bridge key 213 and the first connection portion 2112 are located in different layers, so that the bridge key 213 can be insulated from the first connection portion 2112 (first electrode 211 ).

[0054] Among them, the number of sub-electrode parts included in each second sub-electrode 2121 can be two, three or more. Taking the case where the number of sub-electrode parts is three as an example, then, a first connecting part 2112 is arranged between every two sub-electrode parts of the three sub-electrode parts, that is, when the number of sub-electrode parts of each second sub-electrode 2121 is three, two first connecting parts 2112 are correspondingly arranged.

[0055] Optionally, at least two sub-electrode portions of each second sub-electrode 2121 have equal lengths along the first direction, so that the sub-electrode portions of the second sub-electrode 2121 are evenly distributed, which facilitates the production of the touch control unit.

[0056] Exemplarily, in one embodiment, each second sub-electrode 2121 includes two sub-electrode parts spaced apart, a first connecting part 2112 is disposed between two adjacent sub-electrode parts, the two adjacent sub-electrode parts are electrically connected via a bridging key 213, and the two sub-electrode parts are equal in length along the first direction.

[0057] like Figure 4 As shown, each second sub-electrode 2121 includes a sub-electrode portion 2121a and a sub-electrode portion 2121b spaced apart along a first direction, a first connecting portion 2112 is arranged between the sub-electrode portion 2121a and the sub-electrode portion 2121b, and the sub-electrode portion 2121a and the sub-electrode portion 2121b are electrically connected via a bridging key 213, so that each second sub-electrode 2121 forms a capacitive node with a first connecting portion 2112.

[0058] Then, in this embodiment, the second sub-electrode 2121 is provided to include two spaced sub-electrode parts, so that each second sub-electrode 2121 of the second electrode 212 forms a capacitive node with the first electrode 211 at the intersection, and each second sub-electrode 2121 is only connected to one bridge key 213, that is, a plurality of second sub-electrodes 2121 in a touch unit 210 are connected to a corresponding number of bridge keys 213, so as to avoid increasing the difficulty of manufacturing the touch unit 210 due to too many bridge keys 213, and to prevent the structural design of the touch unit 210 from being too complicated, thereby avoiding affecting the production efficiency; at the same time, each second sub-electrode 2121 is only connected to one bridge key 213, so as to ensure the connection reliability between each second sub-electrode 2121 and the corresponding bridge key 213, and to improve the structural reliability of the touch unit 210, thereby improving the reliability of the touch function of the touch module 2001.

[0059] Furthermore, the lengths of the two sub-electrode portions along the first direction are equal, so that each first connection portion 2112 is arranged at the same position of the corresponding first sub-electrode 2111. For example, each first connection portion 2112 can be connected to the middle position of the first sub-electrode 2111, so that multiple first connection portions 2112 in a touch control unit 210 can be arranged in the same row, which can further shorten the current flow path and effectively reduce the electrode impedance.

[0060] Please refer to Figure 5The touch control unit 210 includes a first touch control layer 2101 and a second touch control layer 2102. The first touch control layer 2101 is provided with a first electrode 211 and a second electrode 212. The second touch control layer 2102 is stacked on one side of the first touch control layer 2101. The second touch control layer 2102 includes a bridge key 213 and an insulating layer 214 covering the bridge key 213. The insulating layer 214 is provided with a via hole 2141 penetrating the insulating layer 214, so that the bridge key 213 is electrically connected to the second sub-electrode 2121 of the second electrode 212 through the via hole 2141.

[0061] Specifically, if Figure 5 As shown, the bridging key 213 includes a main body 2131 and a connecting portion 2132 connected to opposite ends of the main body 2131, the main body 2131 is arranged along the first direction, the insulating layer 214 is provided with a first via hole 2141a and a second via hole 2141b penetrating through its own thickness direction, the respective opposite ends of the two sub-electrode parts of the second sub-electrode 2121 are exposed in the first via hole 2141 and the second via hole, the connecting portion 2132 includes a first connecting portion 2132a and a second connecting portion 2132b, the first connecting portion 2132a is arranged in the first via hole 2141a and connected to one of the sub-electrode parts, and the second connecting portion 2132b is arranged in the second via hole 2141b and connected to the other sub-electrode part, so that the bridging key 213 is electrically connected to the second sub-electrode 2121, thereby ensuring that the second sub-electrode 2121 is continuously conductive along the first direction.

[0062] Since the bridge key 213 and the first connection portion 2112 are located in different touch layers and the main body 2131 of the bridge key 213 and the first connection portion 2112 are separated by the insulating layer 214 , the bridge key 213 and the first connection portion 2112 can be insulated from each other.

[0063] Optionally, the second touch layer 2102 can be arranged between the display module 2002 and the first touch layer 2101. Then, when a finger touches the touch screen 200, the first touch layer 2101 is closer to the finger than the second touch layer 2102, so that the first touch layer 2101 can more easily sense the capacitance change when the finger touches the touch screen 200, thereby ensuring the touch sensitivity of the touch screen 200.

[0064] Optional, please continue to refer to Figure 5 The touch control unit 210 further includes an encapsulation layer 2103 and a base layer 2104. The encapsulation layer 2103 is stacked on a side of the first touch control layer 2101 away from the second touch control layer 2102, and the base layer 2104 is stacked on a side of the second touch control layer 2102 away from the first touch control layer 2101.

[0065] The base layer 2104 may be formed by a combination of an organic layer and an inorganic layer. The inorganic layer is used to isolate water vapor and oxygen in the air, reduce the risk of water vapor and oxygen invading the interior of the touch module 2001 (for example, the first touch layer 2101 and the second touch layer 2102), and avoid affecting the normal touch operation of the touch screen 200. The organic layer is conducive to the flattening design of the base layer 2104, and can facilitate the connection between the base layer 2104 (touch module 2001) and the display module 2002.

[0066] Similarly, the encapsulation layer 2103 may also be composed of an organic layer and an inorganic layer, which will not be described in detail here.

[0067] Please refer to Figure 4 The first electrode 211 includes at least three first sub-electrodes 2111 , wherein two first sub-electrodes 2111 are arranged opposite to each other along the second direction.

[0068] At least one other first sub-electrode 2111 is disposed between two of the first sub-electrodes 2111, and a first width of at least one other first sub-electrode 2111 along the second direction is greater than a second width of each of the two first sub-electrodes 2111 along the second direction. Thus, through the above arrangement, when a plurality of touch control units 210 are arranged along the second direction, it is possible to prevent the width of the whole formed by connecting two adjacent first sub-electrodes 2111 of two adjacent touch control units 210 from being too large.

[0069] Exemplarily, in one embodiment, the first width is equal to twice the second width.

[0070] The first width is equal to twice the second width, that is, the width of at least another first sub-electrode 2111 along the second direction is equal to twice the width of each of the two first sub-electrodes 2111 along the second direction. Then, when the plurality of touch control units 210 are arranged along the second direction, the width of the whole formed by connecting two adjacent first sub-electrodes 2111 of two adjacent touch control units 210 is equal to the width of the first sub-electrode 2111 inside each touch control unit, so that the pattern of the entire touch control module 2001 is more uniform.

[0071] Optionally, the intervals between every two adjacent first sub-electrodes 2111 are the same, so that a layout space of the same size can be formed between every two adjacent first sub-electrodes 2111, so that each second sub-electrode 2121 can be designed to have the same width along the second direction.

[0072] Optionally, in one embodiment, the width of each second sub-electrode 2121 along the second direction is the same, and the width of the second sub-electrode 2121 along the second direction is less than or equal to the width of the first sub-electrode 2111 along the second direction.

[0073] In one embodiment, the plurality of touch units 210 are arranged in an array along the first direction and the second direction, wherein the plurality of second sub-electrodes 2121 of the second electrodes 212 of any two adjacent touch units 210 arranged along the first direction are electrically connected to each other.

[0074] It should be noted that the multiple second sub-electrodes 2121 of the second electrode 212 of two adjacent touch units 210 are electrically connected to each other, which means that the multiple second sub-electrodes 2121 of the two are connected one-to-one, so that the second sub-electrodes 2121 of any column of touch units 210 along the first direction are connected to form a whole long strip.

[0075] Correspondingly, the first sub-electrodes 2111 corresponding to the first electrodes 211 of any adjacent touch units 210 arranged along the second direction are electrically connected.

[0076] In this case, multiple columns of second sub-electrodes 2121 may be connected as a whole through metal wiring at the end of the entire touch module 2001 (ie, the entire touch unit array).

[0077] For example, please refer to Figure 6 and Figure 7 , Figure 6 is a second structural schematic diagram of the touch control unit of the touch control module of the embodiment of the present application, Figure 7 for Figure 6 The touch control units are shown in a partial structural schematic diagram in which the touch control module 2001 is arranged in a matrix. The touch control module 2001 includes a first edge (not shown) and a second edge (not shown) arranged opposite to each other along a first direction. The first edge and the second edge are provided with metal traces 218, and the metal traces 218 extend along the second direction to electrically connect the second sub-electrodes 2121 of the second electrodes 212 of the touch control units 210 located at the first edge and the second edge through the metal traces 218.

[0078] The touch units 210 located at the first edge and the second edge, that is, the first touch unit 210 and the last touch unit 210 in all columns of touch units 210 along the first direction, that is, all touch units 210 in the first row of touch units 210 and all touch units 210 in the last row of touch units 210 along the second direction.

[0079] It can be understood that the metal wiring 218 extends along the second direction, that is, the metal wiring 218 is a transversely arranged metal wiring 218, so that a plurality of transversely arranged columns of second sub-electrodes 2121 can be connected.

[0080] Please continue to refer to Figure 6 and Figure 7Each touch unit 210 further includes a plurality of first virtual electrodes 215, and each first sub-electrode 2111 is provided with a first virtual electrode 215 at two opposite ends along the first direction, so that the first electrodes 211 of any two adjacent touch units 210 arranged along the first direction are insulated from each other.

[0081] Each first sub-electrode 2111 is provided with a first virtual electrode 215 at two opposite ends along the first direction. That is, a first virtual electrode 215 is provided at the head end of each first sub-electrode 2111, and another first virtual electrode 215 is provided at the tail end of each first sub-electrode 2111. Figure 6 For example, in the figure, the touch control unit 210 is provided with four first sub-electrodes 2111 , and the touch control unit 210 includes eight first virtual electrodes 215 .

[0082] Then, in this embodiment, a first virtual electrode 215 is provided at each opposite end of each first sub-electrode 2111, so that when a plurality of touch control units 210 are arranged along a first direction, the first virtual electrode 215 can separate the first electrodes 211 of any two adjacent touch control units 210 arranged along the first direction to achieve mutual insulation, prevent a short circuit between the two, and avoid affecting the normal use of the touch screen 200.

[0083] Of course, in other optional implementations, the first electrodes 211 of any two adjacent touch control units 210 arranged along the first direction may also be separated by the breaks of the metal grid to achieve mutual insulation.

[0084] Optionally, in another embodiment, please refer to Figure 8 , Figure 8 The second electrode 212 further includes a plurality of second connecting portions 2122, each of which is disposed between two adjacent second sub-electrodes 2121 and connects the ends of two adjacent second sub-electrodes 2121 along the first direction.

[0085] like Figure 8 As shown, the second connection portion 2122 is connected to the second sub-electrode 2121 in a comb shape.

[0086] The second connection part 2122 may be made of a metal mesh structure. Optionally, the metal mesh structure of the second connection part 2122 may be integrated with the metal mesh structure of the second sub-electrode 2121 to ensure the connection reliability between the second connection part 2122 and the second sub-electrode 2121, thereby ensuring the reliability of the touch screen 200.

[0087] In this case, please refer to Fig. 9 , Fig. 9 for Figure 8 The schematic diagram of a part of the structure in which the touch control units are arranged in a matrix. When the multiple touch control units 210 are arranged in an array along the first direction and the second direction, the multiple second sub-electrodes 2121 of the second electrodes 212 of any two adjacent touch control units 210 arranged along the first direction are electrically connected to each other, and the multiple second connecting parts 2122 of the second electrodes 212 of any two adjacent touch control units 210 arranged along the first direction are electrically connected to each other.

[0088] It should be noted that the multiple second sub-electrodes 2121 of the second electrodes 212 of two adjacent touch control units 210 are electrically connected to each other, which means that the multiple second sub-electrodes 2121 of the two are connected one-to-one; and the multiple second connecting parts 2122 of the second electrodes 212 of two adjacent touch control units 210 are electrically connected to each other, which means that the multiple second connecting parts 2122 of the two are connected one-to-one.

[0089] Please continue to refer to Fig. 9 Since the second connection portion 2122 is connected to the end of the second sub-electrode 2121 along the first direction, when the plurality of touch control units 210 are arranged along the first direction, the second connection portion 2122 can separate parts of the first sub-electrodes 2111 of two adjacent touch control units 210, so as to Fig. 9 For example, the second connection portion 2122 can separate the first sub-electrodes 2111 located in the middle of two adjacent touch control units 210 .

[0090] For the first sub-electrodes 2111 on both sides of the touch unit 210, please refer to Figure 8 and Fig. 9 The first electrode 211 includes at least three first sub-electrodes 2111, wherein two first sub-electrodes 2111 are arranged opposite to each other along the second direction, wherein at least another first sub-electrode 2111 is arranged between two first sub-electrodes 2111. Each touch-sensing unit 210 also includes a plurality of first dummy electrodes 215, wherein one first dummy electrode 215 is respectively arranged at two opposite ends of each first sub-electrode 2111 along the first direction, so that the first electrodes 211 of two adjacent touch-sensing units 210 arranged along the second direction are insulated from each other.

[0091] In which, each of the two first sub-electrodes 2111 is provided with a first virtual electrode 215 at two opposite ends along the first direction, that is, each of the first sub-electrodes 2111 located at two opposite sides of the touch unit 210 is provided with a first virtual electrode 215 at two opposite ends along the first direction. Figure 8 As shown, a first virtual electrode 215 is disposed at each of the four diagonals of the touch control unit 210 .

[0092] In this way, by providing a first virtual electrode 215 at the opposite ends of each of the two first sub-electrodes 2111 along the first direction, when a plurality of touch control units 210 are arranged along the first direction, the first virtual electrode 215 can separate the first sub-electrodes 2111 located on the opposite sides of the touch control units 210 of two adjacent touch control units 210, and the first sub-electrodes 2111 located in the middle of the touch control units 210 of two adjacent touch control units 210 can be separated by the second connecting portion 2122. Then, by the cooperation of the first virtual electrode 215 and the second connecting portion 2122, the first sub-electrodes 2111 of any two adjacent touch control units 210 along the first direction can be separated to achieve mutual insulation and prevent a short circuit between the two, thereby avoiding affecting the normal use of the touch screen 200.

[0093] Optional, please refer to Fig.10 , Fig.10 FIG. 4 is a schematic diagram of a touch control unit of a touch control module according to an embodiment of the present application. The touch control unit 210 further includes a second virtual electrode 216 , which is disposed in the second sub-electrode 2121 .

[0094] The second dummy electrode 216 is arranged inside the second sub-electrode 2121, so as to reduce the parasitic capacitance between the second electrode 212 and the cathode in the display module 2002 arranged on one side of the touch screen. Generally speaking, if the parasitic capacitance between the touch electrode in the touch screen 200 and the cathode in the display module 2002 arranged on one side of the touch screen 200 is too large, the signal amount will be reduced and the signal attenuation will be increased. Therefore, the second dummy electrode 216 is arranged inside the second sub-electrode 2121, so as to effectively increase the signal amount and reduce the signal attenuation, so as to improve the touch performance of the touch screen 200.

[0095] Optional, please refer to Fig.11 , Fig.11 The fifth structure diagram of the touch control unit of the touch control module of the embodiment of the present application is shown in FIG. 210 . The touch control unit 210 further includes a third virtual electrode 217 , which is disposed in the first sub-electrode 2111 .

[0096] Similarly, by setting the third virtual electrode 217 in the first sub-electrode 2111, the parasitic capacitance between the first electrode 211 and the cathode in the display module 2002 disposed on one side of the touch screen can be reduced. Generally speaking, if the parasitic capacitance between the touch electrode in the touch screen 200 and the cathode in the display module 2002 disposed on one side of the touch screen 200 is too large, the signal amount will be reduced and the signal attenuation will increase. Therefore, by setting the third virtual electrode 217 in the first sub-electrode 2111, the signal amount can be effectively increased, and the signal attenuation can be reduced, so that the touch performance of the touch screen 200 can be improved.

[0097] Optionally, in one embodiment, please refer to Fig.12 , Fig.12 The sixth structural diagram of the touch control unit of the touch control module of the embodiment of the present application is as follows: The touch control unit 210 may include a second virtual electrode 216 and a third virtual electrode 217 , wherein the second virtual electrode 216 is disposed in the second sub-electrode 2121 , and the third virtual electrode 217 is disposed in the first sub-electrode 2111 .

[0098] By providing virtual electrodes in the first electrode 211 and the second electrode 212, the effective area of ​​the first electrode 211 and the second electrode 212 is reduced, which can reduce the coupling capacitance between the finger and the sensing electrode, improve the touch performance of the touch screen 200 in the suspended state, and reduce the risk of touch disconnection.

[0099] In the present application, the basic mutual capacitance value of the first electrode 211 and the second electrode 212 in the touch screen 200 may be less than or equal to 1.2 pf, the proportion of the capacitance change caused by a finger touching the touch screen 200 may be greater than or equal to 20%, the parasitic capacitance between the first electrode 211 (driving electrode TX) and the cathode in the display screen arranged on one side of the touch screen 200 may be less than or equal to 12 pf, the parasitic capacitance between the second electrode 212 (sensing electrode RX) and the cathode in the display screen arranged on one side of the touch screen 200 may be less than or equal to 12 pf, the impedance value of the first electrode 211 is less than or equal to 25 ohms, and the impedance value of the second electrode 212 is less than or equal to 25 ohms.

[0100] The present application also provides an electronic device. The touch screen 200 provided in the present application can be applied to the electronic device. When the touch screen 200 is applied to the electronic device, the touch operability of the electronic device can be improved, and the user experience can be improved.

[0101] As used herein, "electronic equipment" (or simply "terminal") includes, but is not limited to, a device configured to receive / send communication signals via a wireline connection (such as via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (for example, for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal".

[0102] Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device 10 configured with a cellular communications module.

[0103] Please refer to Fig.13 and Fig.14 , Fig.13 A first structural diagram of an electronic device provided in an embodiment of the present application, Fig.14 The second structural diagram of the electronic device provided in the embodiment of the present application is as follows: The electronic device 10 includes a housing 100, a touch screen 200, a mainboard 300 and other components.

[0104] The touch screen 200 is disposed on the housing 100 to form a display surface of the electronic device 10 for displaying information such as images and texts; meanwhile, the touch screen 200 is used for users to perform touch operations to realize the touch function of the electronic device 10. The touch screen 200 may include a liquid crystal display (LCD) touch screen 200 or an organic light-emitting diode (OLED) touch screen 200.

[0105] The housing 100 is used to form the outer contour of the electronic device 10, so as to accommodate the electronic devices and functional components of the electronic device 10, and at the same time to seal and protect the electronic devices and functional components inside the electronic device 10. For example, the electronic devices and functional components such as the battery, the mainboard 300, and the sensor of the electronic device 10 can be arranged inside the housing 100. It can be understood that the housing 100 can include a middle frame 110 and a back cover 120.

[0106] The middle frame 110 may be a thin plate or sheet structure, or a hollow frame structure. The middle frame 110 is used to provide support for the electronic devices or functional components in the electronic device 10, so as to install the electronic devices and functional components of the electronic device 10 together. For example, the middle frame 110 may be provided with grooves, protrusions and other structures to facilitate the installation of the electronic devices or functional components of the electronic device 10. It is understandable that the material of the middle frame 110 may include metal or plastic.

[0107] The back cover 120 is used to seal the electronic devices and functional components of the electronic device 10 together with the middle frame 110 and the touch screen 200 inside the electronic device 10 to protect the electronic devices and functional components of the electronic device 10. It can be understood that the material of the back cover 120 can also include metal or plastic.

[0108] The mainboard 300 is disposed inside the housing 100. For example, the mainboard 300 can be mounted on the middle frame 110 of the housing 100 for fixing, and the mainboard 300 is sealed inside the electronic device 10 through the back cover 120. Among them, one or more functional components such as a processor, an earphone jack, an acceleration sensor, a gyroscope, and a motor can be integrated on the mainboard 300. At the same time, the touch screen 200 can be electrically connected to the mainboard 300 to control the display and touch operation of the touch screen 200 through the processor on the mainboard 300.

[0109] Among them, the touch screen 200 adopts the touch screen 200 based on the above-mentioned design concept. When the touch screen 200 is applied to the electronic device 10, since each first sub-electrode 2111 of the first electrode 211 of the touch module 2001 extends along the first direction, each second sub-electrode 2121 of the second electrode 212 extends along the first direction, and multiple first sub-electrodes 2111 of the first electrode 211 are arranged along the second direction, and each second sub-electrode 2121 is arranged between two adjacent first sub-electrodes 2111, then the first sub-electrode 2111 and the second sub-electrode 2121 can be set to be roughly strip-shaped, so that the driving electrode and the sensing electrode of the touch module 2001 are set to be roughly strip-shaped, which can shorten the current flow path and effectively reduce the impedance value of the electrode; moreover, the strip design can increase the boundary length of the junction between the first electrode 211 and the second electrode 212, which can improve the signal ratio when a finger touches the touch screen 200, so that the touch signal is easier to detect, and the touch performance of the touch screen 200 can be improved. Furthermore, each first connecting portion 2112 of the first electrode 211 of the touch module 2001 connects two adjacent first sub-electrodes 2111, so that multiple first sub-electrodes 2111 of the first electrode 211 are continuously conductive along the second direction, and each second sub-electrode 2121 of the second electrode 212 is continuously conductive along the first direction. Then, each second sub-electrode 2121 of the second electrode 212 and the first electrode 211 (first connecting portion 2112) will form at least one capacitive node at the intersection. Then, multiple capacitive nodes can be formed in a touch unit 210 of the touch module 2001 of the embodiment of the present application, which can increase the coupling capacitance between the first electrode 211 and the second electrode 212, that is, the coupling capacitance between the driving electrode and the sensing electrode can be increased, thereby increasing the capacitance change caused by finger touch, reducing the suspension effect of the touch screen 200, enhancing the touch signal, reducing the phenomenon of disconnection or touch jitter, further improving the touch performance, and improving the user experience.

[0110] The above is a detailed introduction to the touch module, touch screen and electronic device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A touch module, characterized in that: The invention comprises a plurality of touch control units, each of which comprises: a first electrode, comprising a plurality of first sub-electrodes and a plurality of first connecting portions, each of the first sub-electrodes extending along a first direction, and the plurality of the first sub-electrodes arranged along a second direction, and each of the first connecting portions connecting two adjacent first sub-electrodes so that the plurality of the first sub-electrodes are continuously conductive along the second direction; wherein the first direction is perpendicular to the second direction; and The second electrode is insulated from the first electrode, and includes a plurality of second sub-electrodes. Each of the second sub-electrodes extends along the first direction, each of the second sub-electrodes is arranged between two adjacent first sub-electrodes, and each of the second sub-electrodes is continuously conductive along the first direction.

2. The touch module according to claim 1, characterized in that: Each of the second sub-electrodes comprises at least two sub-electrode parts arranged at intervals, and one first connecting part is arranged between two adjacent sub-electrode parts; Each of the touch control units further includes a plurality of bridge keys stacked with the plurality of the first connecting portions, and two adjacent sub-electrode portions spaced apart are electrically connected via one of the bridge keys.

3. The touch module according to claim 2, characterized in that: The lengths of at least two sub-electrode parts of each of the second sub-electrodes along the first direction are equal.

4. The touch module according to claim 2, characterized in that: Each of the second sub-electrodes includes two sub-electrode parts arranged at an interval, a first connecting part is arranged between two adjacent sub-electrode parts, the two adjacent sub-electrode parts are electrically connected through a bridge key, and the two sub-electrode parts have equal lengths along the first direction.

5. The touch module according to claim 2, characterized in that: The touch control unit comprises: A first touch layer, provided with the first electrode and the second electrode; The second touch layer is stacked on one side of the first touch layer, and the second touch layer includes the bridge key and an insulating layer covering the bridge key. The insulating layer is provided with a via hole penetrating the insulating layer, so that the bridge key is electrically connected to the second sub-electrode of the second electrode through the via hole.

6. The touch module according to claim 1, characterized in that: The plurality of touch control units are arranged in an array along the first direction and the second direction, wherein the plurality of second sub-electrodes of the second electrodes of any two adjacent touch control units arranged along the first direction are electrically connected to each other.

7. The touch module according to claim 6, characterized in that: The touch module includes a first edge and a second edge that are relatively arranged along the first direction, and the first edge and the second edge are provided with metal wiring, and the metal wiring extends along the second direction to electrically connect the second sub-electrodes of the second electrode of the touch unit located at the first edge and the second edge through the metal wiring.

8. The touch module according to claim 6, characterized in that: Each of the touch control units further includes a plurality of first virtual electrodes. Each of the first sub-electrodes is provided with a first virtual electrode at two opposite ends along the first direction, so that the first electrodes of any two adjacent touch control units arranged along the first direction are insulated from each other.

9. The touch module according to claim 1, characterized in that: The second electrode further includes a plurality of second connecting portions, each of which is disposed between two adjacent second sub-electrodes and connects ends of two adjacent second sub-electrodes along the first direction.

10. The touch module according to claim 9, characterized in that: The plurality of touch control units are arranged in an array along the first direction and the second direction, wherein the plurality of second sub-electrodes of the second electrodes of any two adjacent touch control units arranged along the first direction are electrically connected to each other, and the plurality of second connecting portions of the second electrodes of any two adjacent touch control units arranged along the first direction are electrically connected to each other.

11. The touch module according to claim 9, characterized in that: The first electrode comprises at least three first sub-electrodes, wherein two of the first sub-electrodes are arranged opposite to each other along the second direction, and wherein at least another first sub-electrode is arranged between two of the first sub-electrodes; Each of the touch control units further includes a plurality of first virtual electrodes, wherein one first virtual electrode is disposed at opposite ends of each of the two first sub-electrodes along the first direction, so that the first electrodes of two adjacent touch control units arranged along the second direction are insulated from each other.

12. The touch module according to any one of claims 1 to 11, characterized in that: Each of the touch control units comprises a second virtual electrode, and the second virtual electrode is disposed in the second sub-electrode; And / or, each of the touch control units includes a third virtual electrode, and the third virtual electrode is disposed in the first sub-electrode.

13. The touch module according to any one of claims 1 to 11, characterized in that: The width of each of the second sub-electrodes along the second direction is the same, and the width of the second sub-electrodes along the second direction is less than or equal to the width of the first sub-electrode along the second direction.

14. The touch module according to any one of claims 1 to 10, characterized in that: The first electrode includes at least three first sub-electrodes, two of which are arranged opposite to each other along the second direction, at least another first sub-electrode is arranged between two of the first sub-electrodes, and the first width of at least another first sub-electrode along the second direction is greater than the second width of each of the two first sub-electrodes along the second direction.

15. The touch module according to claim 14, characterized in that: The first width is equal to twice the second width.

16. A touch screen, characterized in that: The invention comprises a display module and a touch module as claimed in any one of claims 1 to 15, wherein the touch module is stacked on one side of the display module.

17. An electronic device, characterized in that: Comprising the touch screen as claimed in claim 16.

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