Touch electrode, touch module and touch display panel

Abstract

The present application provides a touch electrode, a touch module and a touch display panel. The touch electrode includes at least a first touch subunit, a second touch subunit, a third touch subunit, a first connecting portion, a second connecting portion, a third connecting portion, a fourth connecting portion, and a first bridge portion, wherein the first touch subunit surrounds the second touch subunit and has a first gap and a second gap dividing the first touch subunit into a first extending portion and a second extending portion, the second touch subunit surrounds the third touch subunit and has a third gap and a fourth gap dividing the second touch subunit into a third extending portion and a fourth extending portion, the first connecting portion passes through the third gap and is connected to the first extending portion and the third touch subunit, the second connecting portion passes through the fourth gap and is connected to the second extending portion and the third touch subunit, the first extending portion and the second extending portion are electrically connected by the third touch subunit, and the third connecting portion and the fourth connecting portion pass through the first gap and the second gap, respectively, and extend outside the area formed by the first touch subunit. The touch electrode can improve touch performance, recognition accuracy and sensitivity.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese patent application bearing application number 2023102091856, filed on February 27, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of touch, and in particular to a touch electrode, a touch module and a touch display panel. [Background technology]

[0003] Electronic devices have penetrated into various aspects of people's lives, and touch display panels, with their simple and straightforward operation characteristics, have become the mainstream information interaction device of current electronic devices. With the progress of society, the requirements of electronic device users for touch display panels are constantly increasing. However, with the emergence of special application scenarios, new requirements have emerged, such as touch with gloves and gesture recognition with light touch. The touch precision and sensitivity of current touch structures are low, and they cannot fully meet the performance requirements of products.

[0004] The pattern structure of conventional touch display panels is simple, with a small effective touch area, which can meet the needs of simple daily use. However, under some special conditions, such as when wearing gloves or when using gesture recognition, the effective touch area is small, resulting in insufficient touch sensitivity and low recognition accuracy, which is detrimental to the user's product experience. Summary of the Invention [Problem to be solved by the invention]

[0005] This application provides a touch electrode, a touch module, and a touch display panel, and mainly aims to solve the technical problem that the conventional touch display panel has a small effective touch area, insufficient touch sensitivity, and low recognition accuracy, which is unfavorable to the user's product experience. [Means for solving the problem]

[0006] In order to solve the above technical problems, one technical solution adopted in the present application provides a touch electrode, the touch electrode including at least a first touch subunit, a second touch subunit, a third touch subunit, a first connecting portion, a second connecting portion, a third connecting portion, a fourth connecting portion and a first bridge portion, the first touch subunit surrounds the second touch subunit, the first touch subunit has a first gap and a second gap dividing the first touch subunit into a first extending portion and a second extending portion, the second touch subunit surrounds the third touch subunit, the second touch subunit has a third gap and a fourth gap dividing the second touch subunit into a third extending portion and a fourth extending portion, the first connecting portion the second connecting portion passes through the fourth gap and is connected to the second extending portion and the third touch subunit; the first extending portion and the second extending portion are electrically connected by the third touch subunit; the third connecting portion is electrically connected to the second touch subunit and passes through the first gap to extend outside the area surrounded by the first touch subunit; the fourth connecting portion is electrically connected to the second touch subunit and passes through the second gap to extend outside the area surrounded by the first touch subunit; and the third extending portion and the fourth extending portion are electrically connected via the first bridge portion.

[0007] In a specific embodiment, the touch electrode further includes an insulating layer, and the first touch subunit, the second touch subunit, and the third touch subunit are disposed in the same layer on one side of the insulating layer, and the first bridge portion is disposed on the other side of the insulating layer.

[0008] In one specific embodiment, the outer contours of the first touch subunit, the second touch subunit and the third touch subunit are all rectangular, the first gap and the second gap are respectively located on two adjacent sides or two opposite sides of the first touch subunit, and the third gap and the fourth gap are respectively located on two adjacent sides or two opposite sides of the second touch subunit.

[0009] In one specific embodiment, the outer contours of the first touch subunit, the second touch subunit and the third touch subunit are all diamond-shaped, and the first gap and the second gap are respectively located on two adjacent sides of the first touch subunit.

[0010] In a specific embodiment, the third gap and the fourth gap are respectively disposed on two adjacent sides of the second touch subunit.

[0011] In a specific embodiment, the touch electrode includes only one first bridge portion, and the first bridge portion is installed corresponding to the third gap or the fourth gap, and the third extension portion and the fourth extension portion are electrically connected via the first bridge portion; or the touch electrode includes two first bridge portions, and the two first bridge portions are installed corresponding to the third gap and the fourth gap, respectively, and the third extension portion and the fourth extension portion are electrically connected to the third gap by one of the first bridge portions, and the third extension portion and the fourth extension portion are electrically connected to the fourth gap by the other of the first bridge portions.

[0012] In one specific embodiment, the first bridge portion is a metal bridge portion, and the metal material is any one of silver (Ag), copper (Cu), aluminum (Al), molybdenum (Mo), or a metal alloy material thereof.

[0013] In one specific embodiment, the material of the insulating layer is an insulating material, which may be one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON).

[0014] In order to solve the above technical problem, another technical solution adopted by the present application provides a touch module, which includes a plurality of touch electrodes, and the plurality of touch electrodes are arranged in an array and connected to form a plurality of touch driving channels extending along a first direction and a plurality of touch detection channels extending along a second direction, and the first direction and the second direction intersect each other, where the touch electrode is any of the above-mentioned touch electrodes.

[0015] In one specific embodiment, the first direction and the second direction are perpendicular to each other.

[0016] In a specific embodiment, the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, the touch module includes a plurality of touch electrode units arranged in an array, the touch electrode unit includes two of the first touch electrodes and two of the second touch electrodes, the two first touch electrodes are arranged along a first direction, and the two second touch electrodes are arranged along a second direction, wherein the plurality of touch electrode units are installed on the same layer, the first direction and the second direction are perpendicular to each other, the first touch subunit and the third touch subunit of the first touch electrode are touch driving channels, the second touch subunit of the first touch electrode are touch detection channels, the second touch subunit of the second touch electrode are touch driving channels, and the first touch subunit and the third touch subunit of the second touch electrode are touch detection channels.

[0017] In a specific embodiment, the touch electrode unit further includes a fifth connection part, the fifth connection part is installed in the same layer as the touch electrode, the first touch subunits of the two first touch electrodes in the same touch electrode unit are electrically connected via the fifth connection part, and the first touch subunits of the two second touch electrodes in the same touch electrode unit are electrically connected via the second touch subunit of the first touch electrode.

[0018] In a specific embodiment, the first touch sub-units of the two second touch electrodes in the same touch electrode unit are electrically connected via the second touch sub-units of the two first touch electrodes.

[0019] In a specific embodiment, the touch module further includes a plurality of second bridge parts, and the plurality of touch electrode units include a plurality of first touch electrode units and a plurality of second touch electrode units, the plurality of first touch electrode units are arranged in a plurality of rows along the first direction, and the plurality of second touch electrode units are arranged in a plurality of columns along the second direction, wherein the first touch sub-units of two adjacent first touch electrode units in the same row are electrically connected by the second touch sub-units of the adjacent second touch electrode units, and the first touch sub-units of two adjacent second touch electrode units in the same column are electrically connected by the second bridge part.

[0020] In one specific embodiment, the length and width of the second bridge portion are both greater than the length and width of the first bridge portion.

[0021] In order to solve the above technical problems, yet another technical solution adopted by the present application provides a touch display panel, the touch display panel including a display module and a touch module, the display module including a display area, and the touch module installed in the display area, where the touch module is any of the above-mentioned touch modules.

[0022] The present application provides a touch electrode, a touch module and a touch display panel, the touch electrode including at least a first touch subunit, a second touch subunit and a third touch subunit, and further including a first connecting portion, a second connecting portion, a third connecting portion, a fourth connecting portion and a bridge portion, wherein the first touch subunit surrounds the second touch subunit, the first touch subunit has a first gap and a second gap, and the first touch subunit is divided into a first extending portion and a second extending portion by the first gap and the second gap, the second touch subunit surrounds the third touch subunit, the second touch subunit has a third gap and a fourth gap, and the second touch subunit is divided into a third extending portion and a fourth extending portion by the third gap and the fourth gap, the first connecting portion passes through the third gap and is connected to the first extending portion and the third touch subunit, and the second connecting portion the connecting portion passes through the fourth gap and is connected to the second extending portion and the third touch subunit, so that the first extending portion and the second extending portion are electrically connected by the third touch subunit, the third connecting portion is electrically connected to the second touch subunit and extends through the first gap to outside the area surrounded by the first touch subunit, the fourth connecting portion is electrically connected to the second touch subunit and extends through the second gap to outside the area surrounded by the first touch subunit, the third extending portion and the fourth extending portion are electrically connected by the first bridge portion. The touch electrodes form one channel in the first touch subunit and the third touch subunit, and form another channel in the second touch subunit. In a touch module formed using these electrodes, the touch electrodes in the same row include both the driving channel and the sensing channel, and the touch electrodes in the same column include both the driving channel and the sensing channel, thereby greatly increasing the effective touch area, the single point capacitance value, the recognition accuracy and the sensitivity, and improving the touch performance, and expanding the application scenarios of actual use. [Brief explanation of the drawings]

[0023] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings from these drawings without any creative efforts. [Figure 1] 1 is a structural schematic diagram of a touch electrode provided in a first embodiment of the present application; [Figure 2] 1 is a structural schematic diagram of a touch electrode provided by a second embodiment of the present application; [Figure 3] 10 is a structural schematic diagram of a touch electrode provided by a third embodiment of the present application; [Figure 4] 1 is a structural schematic diagram of a touch module provided by an embodiment of the present application; [Figure 5] 1 is a structural schematic diagram of a touch electrode unit provided by an embodiment of the present application; [Figure 6] FIG. 2 is a structural schematic diagram of a touch module provided by another embodiment of the present application; [Figure 7] 1 is a flowchart of a method for manufacturing a touch module provided by the present application. [Figure 8] 1 is a cross-sectional structure schematic diagram of a touch module provided by the present application; [Figure 9] 1 is a structural schematic diagram of a touch display panel provided by an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, the technical solutions of the embodiments of the present application will be clearly and completely described with reference to the drawings of the embodiments of the present application. It should be understood that the described embodiments are only a part of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without inventive efforts fall within the scope of protection of the present application.

[0025] In the following description, specific details such as particular system architectures, interfaces, techniques, etc. are provided for purposes of explanation and not limitation, in order to provide a thorough understanding of the present application.

[0026] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance or the number of technical features indicated. Therefore, features defined as "first," "second," and "third" can explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless otherwise clearly and specifically defined. All directional indications (up, down, left, right, front, rear, etc.) in the embodiments of this application are used only to describe the relative positional relationships between components in a specific position (as shown in the drawings), sports situations, etc.; when the specific position changes, the directional indications also change accordingly. Furthermore, the terms "comprise" and "have" and their variations are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units, or may include other steps or units inherent to such process, method, product, or device.

[0027] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification do not necessarily all refer to the same embodiment, nor are they separate or alternative embodiments mutually exclusive from other embodiments. Those skilled in the art will understand, either explicitly or implicitly, that the embodiments described herein can be combined with other embodiments.

[0028] Currently, electronic devices have permeated various aspects of people's lives, and touch screens and touch display panels have become the mainstream information exchange devices for current electronic devices due to their simple and straightforward operation. As society progresses, electronic device users' various requirements for touch display panels are constantly increasing. Specifically, touch is realized by scanning the capacitance of touch sensing channels through charging and discharging, detecting the change in capacitance of the sensing channel corresponding to the finger touch area, thereby realizing touch positioning and point reporting. Increasing the sensitivity of touch sensing plays an important role in improving touch performance.

[0029] In the prior art, the touch electrode of a conventional touch module is rectangular, the pattern structure of the touch module is simple, the effective touch area is small, and the bridge area is large, which affects the display effect. Although the conventional touch display panel can meet simple daily use, under some special conditions, such as application scenarios such as wearing gloves and gesture recognition, the touch sensitivity and recognition accuracy are low, which is unfavorable to the user's product experience.

[0030] The touch electrode, touch module and touch display panel provided in this application can not only improve the effective touch area, but also increase the single-point capacitance value, discrimination accuracy and sensitivity, thereby improving touch performance and expanding the application scenarios for practical use.

[0031] The present application will be described in detail below with reference to the drawings and embodiments.

[0032] Referring to Figure 1, Figure 1 is a structural schematic diagram of a touch electrode according to a first embodiment of the present application. In this embodiment, a touch electrode 10 is provided, which includes a first touch sub-unit 1, a second touch sub-unit 2, a third touch sub-unit 3, a first connecting portion 4, a second connecting portion 5, a third connecting portion 6, a fourth connecting portion 7, and a first bridging portion 8.

[0033] 1 , a first touch subunit 1 surrounds a second touch subunit 2, and has a first gap 11 and a second gap 12, which divide the first touch subunit 1 into a first extension portion 13 and a second extension portion 14. A second touch subunit 2 surrounds a third touch subunit 3, and has a third gap 21 and a fourth gap 22, which divide the second touch subunit 2 into a third extension portion 23 and a fourth extension portion 24. A first connecting portion 4 passes through the third gap 21 and is connected to the first extension portion 13 and the third touch subunit 3, and a second connecting portion 5 passes through the fourth gap 22 and is connected to the second extension portion 14 and the third touch subunit 3, thereby electrically connecting the first extension portion 13 and the second extension portion 14 via the third touch subunit 3. The third connection portion 6 is electrically connected to the second touch subunit 2 and extends through the first gap 11 to outside the area surrounded by the first touch subunit 1, and the fourth connection portion 7 is electrically connected to the second touch subunit 2 and extends through the second gap 12 to outside the area surrounded by the first touch subunit 1.

[0034] Here, the outer contours of the first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 are not limited. Optionally, the outer contours of the first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 are all quadrilateral, such as a rectangle, a square, or a diamond. The first gap 11 and the second gap 12 are respectively disposed on two adjacent sides or two opposite sides of the first touch subunit 1, and the third gap 21 and the fourth gap 22 are respectively disposed on two adjacent sides or two opposite sides of the second touch subunit 2.

[0035] Further, as shown in FIG. 1, in a specific embodiment, the outer contours of the first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 are all diamond-shaped. The first gap 11 and the second gap 12 are respectively disposed on two sides adjacent to the first touch subunit 1. The third gap 21 and the fourth gap 22 are respectively disposed on two sides adjacent to the second touch subunit 2. In another specific embodiment, referring to FIG. 2, FIG. 2 is a structural schematic diagram of a touch electrode according to a second embodiment of the present application. The first gap 11 and the second gap 12 are respectively disposed on two opposite sides of the first touch subunit 1 along a first direction X, and the third gap 21 and the fourth gap 22 are respectively disposed on two opposite sides of the second touch subunit 2 along a second direction Y, where the first direction X and the second direction Y are perpendicular to each other.

[0036] As shown in FIG. 1, the touch electrode 10 provided by this embodiment only includes one first bridge portion 8, which is installed corresponding to the third gap 21 or the fourth gap 22 (in FIG. 1, the first bridge portion 8 is installed corresponding to the fourth gap 22), and the third extension portion 23 and the fourth extension portion 24 are electrically connected through the first bridge portion 8, and the first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 are cross-connected to increase the effective touch area.

[0037] Specifically, the first bridge portion 8 is a metal bridge portion, and the metal material may be silver (Ag), copper (Cu), aluminum (Al), molybdenum (Mo), etc., or an alloy material of the above metals, such as aluminum-niobium alloy (AlNd) or molybdenum-niobium alloy (MoNb). The length of the first bridge portion 8 is 4.5 μm to 5.5 μm, and the width is 1.5 μm to 2.5 μm. The first bridge portion 8 is used to bridge the third extension portion 23 and the fourth extension portion 24 of the electrode 10, rather than bridging adjacent touch electrodes 10. This significantly reduces the length and width of the first bridge portion 8, effectively reducing the metal density in the touch electrode 10, improving the display effect, enhancing the visibility of the metal bridge portion in the touch electrode 10, and further improving the product performance of the touch electrode 10.

[0038] In a specific embodiment, as shown in FIG. 3, FIG. 3 is a schematic structural diagram of a touch electrode provided by another embodiment of the present application, and the differences between this embodiment and the above embodiment are as follows: The touch electrode 10 according to this embodiment includes two second bridge portions 8, and two first bridge portions 8 are provided corresponding to the third gap 21 and the fourth gap 22, respectively. The third extension portion 23 and the fourth extension portion 24 are electrically connected to the third gap 21 through one first bridge portion 8, and the third extension portion 23 and the fourth extension portion 24 are electrically connected to the fourth gap 22 through another first bridge portion 8. The connection of the two first bridge portions 8 can make the third extension portion 23 and the fourth extension portion 24 of the touch electrode 10 more stable, thereby increasing the stability of the touch electrode 10. This prevents poor connection between the third extension portion 23 and the fourth extension portion 24 caused by damage to one of the first bridge portions 8.

[0039] In a specific embodiment, referring to FIG. 8 below, the touch electrode 10 further includes an insulating layer 203, and a touch pattern layer 204 composed of the first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 is disposed on one side of the insulating layer 203 in the same layer, and a bridge pattern layer 202 where the first bridge portion 8 is located is disposed on the other side of the insulating layer 203. Specifically, the material of the insulating layer 203 is generally an insulating material, and may be silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON). The material of the insulating layer 203 may be a single layer, multiple layers, or composite layers. Preferably, the insulating layer 203 is a silicon nitride insulating layer.

[0040] It should be noted that the touch electrode 10 provided in the embodiment of the present application includes at least a first touch subunit 1, a second touch subunit 2 and a third touch subunit 3, and more subunits can be designed in the specific implementation process.

[0041] Referring to FIG. 4, FIG. 4 is a structural schematic diagram of a touch module according to an embodiment of the present application. In this embodiment, a touch module 20 is provided, which includes a plurality of touch electrodes 10. The plurality of touch electrodes 10 are arranged in an array and connected to form a plurality of touch driving channels extending along a first direction X and a plurality of touch sensing channels extending along a second direction Y, where the first direction X and the second direction Y intersect with each other. Here, the touch electrode 10 is any of the above-mentioned touch electrodes 10. The plurality of touch electrodes 10 includes a plurality of first touch electrodes 101 and a plurality of second touch electrodes 102. Specifically, the first direction X and the second direction Y are perpendicular to each other.

[0042] In a specific embodiment, the touch module 20 includes a plurality of touch electrode units 20A arranged in an array.

[0043] Further referring to Fig. 5, Fig. 5 is a structural schematic diagram of a touch electrode unit provided by an embodiment of the present application. Fig. 5 is also an enlarged structural schematic diagram of the structure within the dashed frame in Fig. 4. The touch electrode unit 20A includes two first touch electrodes 101 and two second touch electrodes 102, where the two first touch electrodes 101 are arranged along a first direction X, and the two second touch electrodes 102 are arranged along a second direction Y.

[0044] 1, 4 and 5, a plurality of touch electrode units 20A are disposed on the same layer. The first touch subunit 1 and the third touch subunit 3 of the first touch electrode 101 function as touch driving channels, and the second touch subunit 2 of the first touch electrode 101 functions as touch detection channels. The second touch subunit 2 of the second touch electrode 102 functions as touch driving channels, and the first touch subunit 1 and the third touch subunit 3 of the second touch electrode 102 function as touch detection channels.

[0045] As can be understood, the first touch subunit 1 and the third touch subunit 3 of the first touch electrode 101 may function as touch detection channels, and in this case, the second touch subunit 2 of the first touch electrode 101 functions as a touch drive channel. The second touch subunit 2 of the second touch electrode 102 may function as a touch detection channel, and in this case, the first touch subunit 1 and the third touch subunit 3 of the second touch electrode 102 function as touch drive channels.

[0046] Touch driving channels and touch sensing channels are formed in a first direction X and a second direction Y, and the touch driving channels and the touch sensing channels are insulated from each other, so that each touch electrode unit 20A has a touch driving channel and a touch sensing channel, which realizes a multi-point positioning function and increases the single-point capacitance value, recognition accuracy and touch sensitivity.

[0047] 5 , the touch electrode unit 20A further includes a fifth connecting part 9. The fifth connecting part 9 is disposed on the same layer as the touch electrode 10, and the first touch subunits 1 of the two first touch electrodes 101 of the same touch electrode unit 20A are electrically connected via the fifth connecting part 9. The first touch subunits 1 of the two second touch electrodes 102 of the same touch electrode unit 20A are electrically connected via the second touch subunit 2 of the first touch electrode 101. The first touch subunits 1 of the two second touch electrodes 102 of the same touch electrode unit 20A may be electrically connected via the second touch subunit 2 of one first touch electrode 101, or may be electrically connected via the second touch subunits 2 of two first touch electrodes 101, thereby improving stability and detection accuracy.

[0048] 4, the touch module 20 further includes a plurality of second bridge portions B, and the plurality of touch electrode units 20A include a plurality of first touch electrode units 20A1 and a plurality of second touch electrode units 20A2. Specifically, the plurality of first touch electrode units 20A1 are arranged in a plurality of rows along a first direction X. The plurality of second touch electrode units 20A2 are arranged in a plurality of columns along a second direction Y. Here, the first touch subunits 1 of two adjacent first touch electrode units 20A1 in the same row are electrically connected by the second touch subunits 2 of the adjacent second touch electrode units 20A2. The first touch subunits 1 of two adjacent second touch electrode units 20A2 in the same column are electrically connected by the second bridge portion B. The length and width of the second bridge portion B are both greater than those of the first bridge portion 8. For example, the length of the second bridge portion is 119.5 μm to 200.5 μm, and the width is 9.5 μm to 10.5 μm.

[0049] The touch module 20 of Fig. 4 includes a plurality of touch drive channels extending along a first direction X and a plurality of touch detection channels extending along a second direction Y. The driving method of the touch module 20 of Fig. 4 includes the steps of first driving a first touch drive channel and then sequentially detecting and determining a touch position by the plurality of touch detection channels, further driving a second touch drive channel and then sequentially detecting and determining a touch position by the plurality of touch detection channels, and similarly driving the plurality of touch drive channels sequentially, and sequentially detecting and determining a touch position by the plurality of touch detection channels after driving each touch drive channel.

[0050] Referring to FIG. 6, FIG. 6 is a structural schematic diagram of a touch module according to another embodiment of the present application. This embodiment provides another touch module 20, which also includes a plurality of touch electrodes 10. The touch module 20 differs from the above-described touch module 20 in that the specific structure of the plurality of touch electrodes 10 is the same as that of the touch electrode 10 shown in FIG. 2. The plurality of touch electrodes 10 are arranged in a two-dimensional array and connected to form a plurality of touch driving channels extending along a first direction X and a plurality of touch sensing channels extending along a second direction Y, where the first direction X and the second direction Y are perpendicular to each other. Specifically, the outer contour of the touch electrode 10 is square, and one of two opposing sides of the square is parallel to the first direction X, and the other of the two opposing sides is parallel to the second direction Y. The plurality of touch electrodes 10 are arranged in rows in the first direction X and columns in the second direction Y. The plurality of touch electrodes 10 located in odd rows have the first touch subunit 1 and the third touch subunit 3 of the odd-numbered touch electrodes 10 along the first direction X as touch detection channels and the second touch subunit 2 as touch drive channels, the first touch subunit 1 and the third touch subunit 3 of the even-numbered touch electrodes 10 as touch drive channels and the second touch subunit 2 as touch detection channels. The plurality of touch electrodes 10 located in even rows have the first touch subunit 1 and the third touch subunit 3 of the even-numbered touch electrodes 10 along the first direction X as touch detection channels and the second touch subunit 2 as touch drive channels, the first touch subunit 1 and the third touch subunit 3 of the odd-numbered touch electrodes 10 as touch drive channels and the second touch subunit 2 as touch detection channels. The first touch subunits 1 of two adjacent odd-numbered touch electrodes 10 located in the same row are connected via the second touch subunit 2 of the even-numbered touch electrode 10 between them. The first touch subunits 1 of two adjacent odd-numbered touch electrodes 10 located in the same column are connected via the second touch subunit 2 of the even-numbered touch electrode 10 therebetween.The touch driving channels and the touch sensing channels are formed in the first direction X and the second direction Y, and the touch driving channels and the touch sensing channels are insulated from each other. This layout structure does not require the second bridge part B, has a simple structure, effectively reduces the metal area in the touch electrode 10, improves the display effect, and reduces the visibility of the metal bridge part in the touch electrode 10.

[0051] 6 can be understood as the plurality of touch electrodes 10 including a plurality of third touch electrodes 103 and a plurality of fourth touch electrodes 104. The plurality of third touch electrodes 103 and the plurality of fourth touch electrodes 104 are arranged in a two-dimensional array, the plurality of touch electrodes 10 in the same row include the third touch electrodes 103 and the fourth touch electrodes 104 alternately arranged, and the plurality of touch electrodes 10 in the same column include the third touch electrodes 103 and the fourth touch electrodes 104 alternately arranged. Here, the first gap 11 and the second gap 12 of the third touch electrode 103 are respectively arranged on two opposite sides of the first touch subunit 1 along the first direction X, and the first gap 11 and the second gap 12 of the fourth touch electrode 104 are respectively arranged on two opposite sides of the first touch subunit 1 along the second direction Y.

[0052] The touch module 20 of FIG. 6 includes a plurality of touch driving channels extending along a first direction X and a plurality of touch detection channels extending along a second direction Y. The driving method of the touch module 20 of FIG. 6 may be the same as the driving method of the touch module 20 of FIG. 4.

[0053] 7 and 8, Fig. 7 is a flow chart of a method for manufacturing a touch module provided by the present application, and Fig. 8 is a schematic cross-sectional structure diagram of a touch module provided by the present application.

[0054] The present application further provides a method for manufacturing a touch module, which includes the following steps:

[0055] Step (S1): A bridge pattern layer is formed on a substrate.

[0056] Here, the substrate 201 may be a glass substrate or an OLED packaging layer. In a specific embodiment, the bridge pattern layer 202 is formed on the substrate 201 using a physical vapor deposition (PVD) method, and the bridge pattern layer 202 is patterned using a wet etching process. Specifically, the bridge pattern layer 202 is a metal bridge portion, and the metal may be silver (Ag), copper (Cu), aluminum (Al), molybdenum (Mo), etc., or an alloy material of the above metals, such as aluminum-niobium alloy (AlNd) or molybdenum-niobium alloy (MoNb). The bridge pattern layer 202 includes a plurality of first bridge portions 8 and a plurality of second bridge portions B. The length of the bridge pattern layer 202 is 1.5 μm to 2.5 μm, and its width is 4.5 μm to 5.5 μm.

[0057] Step (S2): An insulating layer is provided on the surface of the bridge pattern layer away from the substrate.

[0058] In a specific embodiment, a chemical vapor deposition (CVD) process is used to fabricate the insulating layer 203. Referring to Figure 8, the insulating layer 203 is disposed on the bridge pattern layer 202 and includes two lap holes 203a penetrating the insulating layer 203.

[0059] Specifically, the material of the insulating layer 203 is typically an insulating material such as silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON), etc. The insulating layer 203 may be a single layer, a multilayer, or a composite layer.

[0060] Preferably, the insulating layer 203 is a silicon nitride insulating layer 203 .

[0061] Step (S3): A touch pattern layer of the touch module is disposed on the surface of the insulating layer away from the substrate.

[0062] In a specific embodiment, the touch pattern layer 204 is deposited using a physical vapor deposition (PVD) process, and a wet etching process is used to fabricate the touch pattern layer 204 of the touch module 20. Referring to Figure 8, the touch pattern layer 204 of the touch module 20 is disposed on the insulating layer 203 and electrically connected to the bridge pattern layer 202 through the lap hole 203a.

[0063] Step (S4): A protective layer is provided on the surface of the touch pattern layer away from the insulating layer.

[0064] In a specific embodiment, the resist layer 205 is formed by a chemical vapor deposition (CVD) deposition process.

[0065] The patterning processes referred to in this embodiment, such as physical vapor deposition (PVD), chemical vapor deposition (CVD), and wet etching, are mature manufacturing processes in the relevant technology. In the description of this embodiment, it should be understood that "deposition" means forming a thin film of a predetermined material on a substrate by vapor deposition or other processes.

[0066] The present application further provides a touch display panel 100. Referring to Fig. 9, Fig. 9 is a structural schematic diagram of a touch display panel provided by an embodiment of the present application. The touch display panel 100 includes a display module 30 and a touch module 20, where the display module 30 includes a display area and the touch module 20 is installed in the display area. Here, the touch module 20 is the touch module 20 according to any of the above embodiments. The touch module 20 may be installed on one side of the display surface of the display module 30 or may be embedded in the display module 30.

[0067] The present application provides a touch electrode 10, a touch module 20 and a touch display panel 100, in which the touch electrode includes at least a first touch subunit 1, a second touch subunit 2 and a third touch subunit 3, and further includes a first connecting portion 4, a second connecting portion 5, a third connecting portion 6, a fourth connecting portion 7 and a first bridge portion 8. Here, the first touch subunit 1 surrounds the second touch subunit 2, and the first touch subunit 1 has a first gap 11 and a second gap 12, which divide the first touch subunit 1 into a first extension portion 13 and a second extension portion 14; the second touch subunit 2 surrounds the third touch subunit 3, and the second touch subunit 2 has a third gap 21 and a fourth gap 22, which divide the second touch subunit 2 into a third extension portion 23 and a fourth extension portion 24; the first connecting portion 4 passes through the third gap 21 and connects to the first extension portion 13 and the third touch subunit 3. the second connecting portion 5 passes through the fourth gap 22 and is connected to the second extension portion 14 and the third touch subunit 3, whereby the first extension portion 13 and the second extension portion 14 are electrically connected by the third touch subunit 3; the third connecting portion 6 is electrically connected to the second touch subunit 2 and passes through the first gap 11 to extend outside the area surrounded by the first touch subunit 1; the fourth connecting portion 7 is electrically connected to the second touch subunit 2 and passes through the second gap 12 to extend outside the area surrounded by the first touch subunit 1; and the third extension portion 23 and the fourth extension portion 24 are electrically connected by the first bridge portion.

[0068] Here, the touch electrode unit 20A includes two first touch electrodes 101 arranged along a first direction X and two second touch electrodes 102 arranged along a second direction Y. The touch module 20 includes a plurality of touch electrode units 20A arranged in an array, i.e., a plurality of touch electrodes 10, which are arranged in an array and connected to form a plurality of touch driving channels extending along the first direction X and a plurality of touch detection channels extending along the second direction Y. The first touch subunit 1, the second touch subunit 2, and the third touch subunit 3 are cross-connected to increase the effective touch area. The reduction in the length and width of the first bridge portion 8 effectively reduces the metal density in the touch electrode 10, improving the display effect and reducing the visibility of the metal bridge portion in the touch electrode 10, thereby further improving the performance of products using the touch display panel 10. Touch driving channels and touch detection channels are formed in the first direction X and the second direction Y, and the touch driving channels and the touch detection channels are insulated from each other, so that each touch electrode unit 20A has a touch driving channel and a touch detection channel, realizing a multi-point positioning function and increasing the single-point capacitance value, recognition accuracy, and touch sensitivity. Under some special conditions, such as gloved gloves and gesture recognition applications, the touch area, recognition accuracy, and recognition sensitivity can all be increased, improving the user experience.

[0069] The touch display panel 100 of the present application can be applied to various electronic devices with touch functions, such as mobile phones, tablet computers, digital cameras, navigation systems, etc. The embodiments of the present application do not impose any particular restrictions on the specific form and application scenarios of the touch display panel 100.

[0070] The present application is not limited to the details of the exemplary embodiments described above, and it will be apparent to those skilled in the art that the present application can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it should be considered in all respects as illustrative and not limiting, and the scope of the present application is defined by the appended claims, not the foregoing description, and all changes that come within the meaning and range of equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0071] The above is merely an embodiment of the present application, and does not limit the scope of the claims of the present application. Any equivalent structure or equivalent process conversion made by utilizing the contents of the specification and drawings of the present application, or anything directly or indirectly applicable to other related technical fields, is also included in the scope of the claims of the present application.

Claims

1. A touch electrode including at least a first touch sub-unit, a second touch sub-unit, a third touch sub-unit, a first connecting portion, a second connecting portion, a third connecting portion, a fourth connecting portion and a first bridge portion, The first touch subunit surrounds the second touch subunit, and the first touch subunit has a first gap and a second gap that divide the first touch subunit into a first extending portion and a second extending portion; the second touch subunit surrounds the third touch subunit, and the second touch subunit has a third gap and a fourth gap that divide the second touch subunit into a third extension and a fourth extension; the first connecting portion passes through the third gap and is connected to the first extending portion and the third touch subunit, the second connecting portion passes through the fourth gap and is connected to the second extending portion and the third touch subunit, and the first extending portion and the second extending portion are electrically connected by the third touch subunit; the third connection portion is electrically connected to the second touch subunit and extends through the first gap to an area surrounded by the first touch subunit, and the fourth connection portion is electrically connected to the second touch subunit and extends through the second gap to an area surrounded by the first touch subunit, The touch electrode, wherein the third extension portion and the fourth extension portion are electrically connected to each other via the first bridge portion.

2. The touch electrode further includes an insulating layer, the first touch subunit, the second touch subunit, and the third touch subunit are disposed on one side of the insulating layer in the same layer, and the first bridge part is disposed on the other side of the insulating layer. The touch electrode according to claim 1 .

3. 3. The touch electrode according to claim 1, wherein the outer contours of the first touch subunit, the second touch subunit and the third touch subunit are all rectangular, the first gap and the second gap are respectively located on two adjacent sides or two opposite sides of the first touch subunit, and the third gap and the fourth gap are respectively located on two adjacent sides or two opposite sides of the second touch subunit.

4. 4. The touch electrode of claim 3, wherein the outer contours of the first touch subunit, the second touch subunit and the third touch subunit are all diamond-shaped, and the first gap and the second gap are respectively located on two adjacent sides of the first touch subunit.

5. The touch electrode according to claim 4 , wherein the third gap and the fourth gap are respectively disposed on two adjacent sides of the second touch sub-unit.

6. the touch electrode includes only one first bridge portion, the first bridge portion is installed corresponding to the third gap or the fourth gap, and the third extension portion and the fourth extension portion are electrically connected via the first bridge portion; or The touch electrode according to claim 1 or 2, characterized in that the touch electrode includes two of the first bridge portions, the two first bridge portions being installed corresponding to the third gap and the fourth gap, the third extension portion and the fourth extension portion being electrically connected to the third gap by one of the first bridge portions, and the third extension portion and the fourth extension portion being electrically connected to the fourth gap by the other of the first bridge portions.

7. 7. The touch electrode according to claim 6, wherein the first bridge portion is a metal bridge portion, and the metal material is any one of silver (Ag), copper (Cu), aluminum (Al), molybdenum (Mo), or a metal alloy material thereof.

8. The touch electrode according to claim 2, wherein the material of the insulating layer is an insulating material, which is one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON).

9. A touch module including a plurality of touch electrodes, The touch electrodes are arranged in an array and connected to form a plurality of touch driving channels extending along a first direction and a plurality of touch detection channels extending along a second direction, the first direction and the second direction intersecting each other; Here, the touch electrode is the touch electrode according to claim 1. A touch module characterized by:

10. The touch module of claim 9 , wherein the first direction and the second direction are perpendicular to each other.

11. The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, and the touch module includes a plurality of touch electrode units arranged in an array; the touch electrode unit includes two of the first touch electrodes and two of the second touch electrodes; The two first touch electrodes are arranged along the first direction, and the two second touch electrodes are arranged along the second direction, where a plurality of the touch electrode units are disposed on the same layer, and the first direction and the second direction are perpendicular to each other. The first touch subunit and the third touch subunit of the first touch electrode are touch driving channels, the second touch subunit of the first touch electrode are touch detection channels, the second touch subunit of the second touch electrode are touch driving channels, and the first touch subunit and the third touch subunit of the second touch electrode are touch detection channels. The touch module according to claim 9 .

12. The touch electrode unit further includes a fifth connection part, the fifth connection part is disposed in the same layer as the touch electrode, and the first touch sub-units of the two first touch electrodes in the same touch electrode unit are electrically connected through the fifth connection part; The touch module according to claim 11 , wherein the first touch subunits of the two second touch electrodes in the same touch electrode unit are electrically connected via the second touch subunit of the first touch electrode.

13. 13. The touch module of claim 12, wherein the first touch sub-units of two second touch electrodes in the same touch electrode unit are electrically connected via the second touch sub-units of two first touch electrodes.

14. the touch module further includes a plurality of second bridge parts; The plurality of touch electrode units include a plurality of first touch electrode units and a plurality of second touch electrode units; The plurality of first touch electrode units are arranged in a plurality of rows along the first direction, The plurality of second touch electrode units are arranged in a plurality of rows along the second direction, 13. The touch module of claim 12, wherein the first touch subunits of two adjacent first touch electrode units in the same row are electrically connected by the second touch subunits of the adjacent second touch electrode units, and the first touch subunits of two adjacent second touch electrode units in the same column are electrically connected by the second bridge portion.

15. The touch module of claim 14 , wherein both the length and width of the second bridge portion are greater than the length and width of the first bridge portion.

16. A touch display panel including a display module and a touch module, The display module includes a display area, and the touch module is installed in the display area, where the touch module is the touch module according to claim 9. A touch display panel characterized by:

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