Touch structure and touch display device

Abstract

This application provides a touch structure and a touch display device, relating to the field of display technology. The touch structure includes a plurality of first touch electrodes and a plurality of second touch electrodes disposed within a touch area. The first touch electrodes extend along a first direction, and the second touch electrodes extend along a second direction. Both a first bonding area and a second bonding area of ​​the touch structure are disposed in a peripheral area. A first touch trace within the peripheral area is electrically connected to one end of a first touch electrode and extends to the first bonding area. A second touch trace is electrically connected to the other end of a first touch electrode and extends to the second bonding area. A third touch trace is electrically connected to one end of a second touch electrode and extends to the first bonding area. A fourth touch trace is electrically connected to the other end of a second touch electrode and extends to the second bonding area. By increasing the number of bonding areas, the compatibility of the touch structure is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a touch structure and a touch display device. Background Technology

[0002] In touch display products, the touch structure includes multiple transmitting channels and multiple receiving channels. These multiple transmitting channels and multiple receiving channels are usually electrically connected to the driving circuit in the bonding area. The touch chip on the driving circuit collects the relevant electrical signals of the touch structure and generates touch data, thereby recognizing the user's touch operation.

[0003] Currently, touchscreen structures typically have a bonding area at a fixed location. Based on this, the location of the drive circuit electrically connected to it is relatively fixed, limiting the adjustment of the overall mechanism. This results in poor compatibility for existing touchscreen structures when the customer's overall mechanism design is not finalized in the early stages or when there are subsequent positional changes. Utility Model Content

[0004] This application proposes a touch structure and a touch display device, aiming to improve the compatibility of the touch structure.

[0005] In a first aspect, this application provides a touch structure including a touch area and a peripheral area. The touch structure further includes a first binding area and a second binding area, both of which are disposed in the peripheral area.

[0006] The touch structure also includes a plurality of first touch electrodes and a plurality of second touch electrodes disposed in the touch area. The first touch electrodes extend along a first direction, and the second touch electrodes extend along a second direction. The first direction and the second direction intersect.

[0007] The touch structure also includes multiple first touch lines, multiple second touch lines, multiple third touch lines and multiple fourth touch lines disposed in the peripheral area. The first touch lines are electrically connected to one end of the first touch electrode and extend to the first bonding area. The second touch lines are electrically connected to the other end of the first touch electrode and extend to the second bonding area.

[0008] The third touch trace is electrically connected to one end of the second touch electrode and extends to the first bonding area. The fourth touch trace is electrically connected to the other end of the second touch electrode and extends to the second bonding area.

[0009] In this embodiment, at least one bonding area is added. One end of the first touch electrode extends to the first bonding area via a touch trace, and the other end extends to the second bonding area via a touch trace. Similarly, one end of the second touch electrode extends to the first bonding area via a touch trace, and the other end extends to the second bonding area via a touch trace. In subsequent overall device design, the use of either bonding area can ensure signal conduction on both the first and second touch electrodes, guaranteeing normal touch detection functionality. That is, during the overall device design process, one bonding area can be flexibly selected for electrical connection with the drive circuit as needed, allowing for greater flexibility in the installation positions of circuit board components, etc. The touch structure in this embodiment imposes fewer restrictions on subsequent overall device mechanisms and offers higher compatibility.

[0010] In some embodiments, along a first direction, the peripheral area includes a first sub-peripheral area and a second sub-peripheral area disposed on opposite sides of the touch area. Along a second direction, the peripheral area includes a third sub-peripheral area and a fourth sub-peripheral area disposed on opposite sides of the touch area. The first binding area and the second binding area are respectively disposed within two different sub-peripheral areas among the first, second, third, and fourth sub-peripheral areas.

[0011] In some embodiments, a first bonding area is disposed in a first sub-peripheral area, and a second bonding area is disposed in a fourth sub-peripheral area. A first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second and fourth sub-peripheral areas and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the third and first sub-peripheral areas and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in the fourth sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

[0012] In some embodiments, a first bonding area is disposed in a fourth sub-peripheral area, and a second bonding area is disposed in a second sub-peripheral area. A first touch trace is disposed in both the first and fourth sub-peripheral areas and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the fourth sub-peripheral area and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in both the third and second sub-peripheral areas and extends from the other end of the second touch electrode to the second bonding area.

[0013] In some embodiments, a first bonding area is disposed in a third sub-peripheral area, and a second bonding area is disposed in a second sub-peripheral area. A first touch trace is disposed in both the first and third sub-peripheral areas and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the third sub-peripheral area and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in both the fourth and second sub-peripheral areas and extends from the other end of the second touch electrode to the second bonding area.

[0014] In some embodiments, a first bonding area is disposed in a first sub-peripheral area, and a second bonding area is disposed in a third sub-peripheral area. A first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second and third sub-peripheral areas and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the fourth and first sub-peripheral areas and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in the third sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

[0015] In some embodiments, a first bonding area is disposed in a first sub-peripheral area, and a second bonding area is disposed in a second sub-peripheral area. A first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the third sub-peripheral area and the first sub-peripheral area, and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in the fourth sub-peripheral area and the second sub-peripheral area, and extends from the other end of the second touch electrode to the second bonding area.

[0016] In some embodiments, a first bonding area is disposed in a third sub-peripheral area, and a second bonding area is disposed in a fourth sub-peripheral area. A first touch trace is disposed in the first and third sub-peripheral areas and extends from one end of the first touch electrode to the first bonding area. A second touch trace is disposed in the second and fourth sub-peripheral areas and extends from the other end of the first touch electrode to the second bonding area. A third touch trace is disposed in the third sub-peripheral area and extends from one end of the second touch electrode to the first bonding area. A fourth touch trace is disposed in the fourth sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

[0017] In some embodiments, the touch structure further includes a ground wire disposed within a peripheral area, the ground wire surrounding the touch area, and the ground wire located on the side of the first touch trace, the second touch trace, the third touch trace, and the fourth touch trace away from the touch area. Along the extension direction of the sub-peripheral area where the first bonding area is located, the first bonding area includes ground terminals at both ends. Along the extension direction of the sub-peripheral area where the second bonding area is located, the second bonding area includes ground terminals at both ends. The ground wire includes a first sub-ground wire and a second sub-ground wire, the first sub-ground wire and the second sub-ground wire being respectively connected to the ground terminals at both ends of the first bonding area, and extending around the touch area in opposite directions to the second bonding area, and respectively connected to the ground terminals at both ends of the second bonding area.

[0018] In some embodiments, the first bonding area further includes a plurality of first terminals, a plurality of third terminals, a plurality of first shielding terminals, and a plurality of third shielding terminals located between grounding terminals. The first terminals are connected to a first touch trace, and the third terminals are connected to a third touch trace. The first terminals and third terminals are located between the first shielding terminals, and the third shielding terminals are located between the first terminals and the third terminals.

[0019] The second bonding area also includes multiple second terminals, multiple fourth terminals, multiple second shielding terminals, and multiple fourth shielding terminals located between the grounding terminals. The second terminals are connected to the second touch traces, and the fourth terminals are connected to the fourth touch traces. The second and fourth terminals are located between the second shielding terminals, and the fourth shielding terminal is located between the second and fourth terminals.

[0020] The touch structure also includes a first shielding wire and a second shielding wire disposed in the periphery. The first shielding wire extends along the extension direction of the first sub-grounding wire and is located on the side of the first sub-grounding wire closer to the touch area. The first shielding wire includes a first sub-shielding wire and a second sub-shielding wire. The first sub-shielding wire is connected to a first shielding terminal, and the second sub-shielding wire is connected to a second shielding terminal. The first sub-shielding wire and the second sub-shielding wire are not connected.

[0021] The second shielding wire extends along the extension direction of the second sub-grounding wire and is located on the side of the second sub-grounding wire closer to the touch area. The second shielding wire includes a third sub-shielding wire and a fourth sub-shielding wire. The third sub-shielding wire is connected to the first shielding terminal, and the fourth sub-shielding wire is connected to the second shielding terminal. The third sub-shielding wire and the fourth sub-shielding wire are not connected.

[0022] Within the sub-peripheral area where the first bonding area is located, the touch structure also includes a third shielding line, which is located between the first touch trace and the third touch trace and is connected to the third shielding terminal.

[0023] Within the sub-peripheral area where the second bonding area is located, the touch structure also includes a fourth shielding line, which is located between the second touch trace and the fourth touch trace and is connected to the fourth shielding terminal.

[0024] In some embodiments, both the first touch electrode and the second touch electrode are surface electrodes. Alternatively, the first touch electrode includes a metal mesh layer, and the second touch electrode includes a second metal mesh layer.

[0025] On the other hand, this application also provides a touch display device, including a display panel and the touch structure mentioned in any of the embodiments of the first aspect above, wherein the touch structure is disposed on the display side of the display panel.

[0026] In some embodiments, the touch display device further includes a driving circuit. The touch structure also includes a protective adhesive layer covering one of the first bonding area and the second bonding area, the other of the second bonding area and the first bonding area being connected to the driving circuit.

[0027] The above-described display device has the same structure and beneficial technical effects as the touch structure provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in some embodiments of this application will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not actual dimensions of the products or actual processes of the methods involved in the embodiments of this application.

[0029] Figure 1 This is a schematic diagram of the first touch structure provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the second touch structure provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the third touch structure provided in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the fourth touch structure provided in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the fifth touch structure provided in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the sixth touch structure provided in the embodiments of this application;

[0035] Figure 7 for Figure 2 A schematic diagram of the wiring around the touch structure shown;

[0036] Figure 8 for Figure 7 A partially enlarged schematic diagram of the touch structure shown in the first binding area;

[0037] Figure 9 for Figure 7 A partially enlarged schematic diagram of the touch structure shown in the second binding area;

[0038] Figure 10 This is a schematic diagram of the structure of a touch display device provided in an embodiment of this application. Detailed Implementation

[0039] The technical solutions in some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application are within the scope of protection of this application.

[0040] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and encompassing, that is, "including, but not limited to".

[0041] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0042] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. For example, in describing some embodiments, the term "connection" may be used to indicate that two or more components have direct physical or electrical contact with each other.

[0043] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0044] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0045] This document describes exemplary embodiments with reference to cross-sectional views, which are intended as idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations caused, for example, by manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0046] In current touch display products, the touch structure typically has a bonding area at a fixed location to electrically connect multiple transmitting and receiving channels to corresponding conductive paths on the driving circuit. The touch chip in the driving circuit collects relevant electrical signals from the touch structure through these conductive paths and generates touch data to recognize user touch operations. Understandably, the location of the bonding area on the touch structure limits the design of the overall mechanism. For customers whose overall mechanism design is not finalized in the early stages or whose location changes later, the existing touch structure has poor compatibility. If the customer's overall mechanism design changes later, it may be necessary to redesign and fabricate according to customer requirements. The mask used in the entire touch structure fabrication process may need to be redesigned, which is not only costly but also requires a long fabrication cycle.

[0047] Based on this, this application provides a touch structure designed to improve compatibility.

[0048] like Figures 1-6 As shown, Figure 1 This is a schematic diagram of the first touch structure provided in the embodiments of this application. Figure 2 This is a schematic diagram of the second touch structure provided in the embodiments of this application. Figure 3 This is a schematic diagram of the third touch structure provided in the embodiments of this application. Figure 4 This is a schematic diagram of the fourth touch structure provided in the embodiments of this application. Figure 5 This is a schematic diagram of the fifth touch structure provided in the embodiments of this application. Figure 6 This is a schematic diagram of the sixth touch structure provided in the embodiments of this application.

[0049] like Figure 1As shown, the touch structure 10 includes a touch area Q1 and a peripheral area Q2. The touch area Q1 is the area where the user touches and operates, and the peripheral area Q2 surrounds the touch area Q1 and is used for wiring design.

[0050] The touch structure 10 also includes a first binding area 11 and a second binding area 12, both of which are located in the peripheral area Q2. That is, compared with related technologies, the embodiments of this application add at least one binding area.

[0051] The touch structure 10 also includes a plurality of first touch electrodes 13 and a plurality of second touch electrodes 14 disposed within the touch area Q1. The first touch electrodes 13 extend along a first direction Y, with both ends extending to the edge of the touch area Q1 near the peripheral area Q2. The second touch electrodes 14 extend along a second direction X, with both ends extending to the edge of the touch area Q1 near the peripheral area Q2. The first direction Y intersects the second direction X.

[0052] One of the first touch electrode 13 and the second touch electrode 14 is a touch driving electrode, used to send signals to form a stable electric field under the control of the touch chip; the other is a touch sensing electrode, used to monitor changes in the electric field and convert the capacitance change caused by the electric field change into an electrical signal, which is then transmitted to the touch chip for signal processing, thereby realizing the touch detection function. For example, the first touch electrode 13 is a touch sensing electrode, and the second touch electrode 14 is a touch driving electrode.

[0053] The touch structure 10 also includes multiple first touch lines L1, multiple second touch lines L2, multiple third touch lines L3, and multiple fourth touch lines L4 disposed within the peripheral area Q2. The first touch lines L1 are electrically connected to one end of the first touch electrode 13 and extend to the first bonding area 11. The second touch lines L2 are electrically connected to the other end of the first touch electrode 13 and extend to the second bonding area 12. That is, one end of the first touch electrode 13 extends to the first bonding area 11 via a touch line, and the other end extends to the second bonding area 12 via a touch line. In subsequent overall device design, the signal conduction on the first touch electrode 13 can be achieved by using either bonding area.

[0054] Similarly, the third touch trace L3 is electrically connected to one end of the second touch electrode 14, and extends to the first bonding area 11. The fourth touch trace L4 is electrically connected to the other end of the second touch electrode 14, and extends to the second bonding area 12. That is, one end of the second touch electrode 14 extends to the first bonding area 11 through a touch trace, and the other end extends to the second bonding area 12 through a touch trace. In the subsequent overall design, the signal conduction on the second touch electrode 14 can be achieved by using either bonding area.

[0055] In summary, the touch structure in this embodiment adds at least one binding area. For each binding area, the first touch electrode 13 and the second touch electrode 14 extend to that binding area through corresponding touch traces. During subsequent overall device design, selecting any binding area ensures signal conduction on the first touch electrode 13 and the second touch electrode 14, guaranteeing normal touch detection functionality. Therefore, during the overall device design, one binding area can be flexibly selected for electrical connection with the drive circuit as needed, providing greater flexibility in the installation positions of circuit board components, etc. Compared to related technologies, especially for customers whose overall device design is not finalized in the early stages or whose installation positions may change later, the touch structure 10 in this embodiment imposes fewer restrictions on the overall device structure and offers higher compatibility.

[0056] For touch structures of the same size that require only one binding area but have different preset positions, the mask used in the fabrication process of the touch structure 10 in this embodiment can be utilized. After fabrication, the excess binding area can be protected. That is, the mask used in the fabrication process of the touch structure 10 in this embodiment has a high possibility of reuse, which helps to reduce the production cost of touch structure manufacturers.

[0057] It is understood that the peripheral area Q2 includes portions surrounding different sides of the touch area Q1. In some embodiments, at least two binding areas may be located on the same side of the touch area Q1, and at least two binding areas are arranged sequentially along the extension direction of the peripheral area Q2 on that side.

[0058] Alternatively, at least two binding areas can be set on different sides of the touch area Q1, such as... Figures 1-6 As shown, in some embodiments, along the first direction Y, the peripheral area Q2 includes a first sub-peripheral area Q21 and a second sub-peripheral area Q22 disposed on opposite sides of the touch area Q1. Along the second direction X, the peripheral area Q2 includes a third sub-peripheral area Q23 and a fourth sub-peripheral area Q24 disposed on opposite sides of the touch area Q1.

[0059] The first binding area 11 and the second binding area 12 are respectively set in two different sub-peripheral areas Q2 among the first sub-peripheral area Q21, the second sub-peripheral area Q22, the third sub-peripheral area Q23, or the fourth sub-peripheral area Q24.

[0060] Based on this, the two ends of the first touch electrode 13 can be extended to the corresponding bonding area through the corresponding touch lines, and the two ends of the second touch electrode 14 can also be extended to the corresponding bonding area through the corresponding touch lines. The wiring distribution in the peripheral area Q2 is relatively simple and the wiring design pressure is small, which helps to avoid increasing the size.

[0061] For example, such as Figure 1 As shown, the first binding area 11 is set in the first sub-peripheral area Q21, and the second binding area 12 is set in the fourth sub-peripheral area Q24.

[0062] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22 and the fourth sub-peripheral area Q24 and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0063] The third touch trace L3 is disposed in the third sub-peripheral area Q23 and the first sub-peripheral area Q21, and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is disposed in the fourth sub-peripheral area Q24, and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0064] Or, such as Figure 2 As shown, the first binding area 11 is set in the fourth sub-peripheral area Q24, and the second binding area 12 is set in the second sub-peripheral area Q22.

[0065] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and the fourth sub-peripheral area Q24, and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22, and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0066] The third touch trace L3 is located in the fourth sub-peripheral area Q24 and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is located in the third sub-peripheral area Q23 and the second sub-peripheral area Q22 and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0067] Or, such as Figure 3 As shown, the first binding area 11 is set in the third sub-peripheral area Q23, and the second binding area 12 is set in the second sub-peripheral area Q22.

[0068] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and the third sub-peripheral area Q23, and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22, and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0069] The third touch trace L3 is located in the third sub-peripheral area Q23 and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is located in the fourth sub-peripheral area Q24 and the second sub-peripheral area Q22 and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0070] Or, such as Figure 4 As shown, the first binding area 11 is set in the first sub-peripheral area Q21, and the second binding area 12 is set in the third sub-peripheral area Q23.

[0071] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22 and the third sub-peripheral area Q23 and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0072] The third touch trace L3 is disposed in the fourth sub-peripheral area Q24 and the first sub-peripheral area Q21, and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is disposed in the third sub-peripheral area Q23, and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0073] Or, such as Figure 5 As shown, the first binding area 11 is set in the first sub-peripheral area Q21, and the second binding area 12 is set in the second sub-peripheral area Q22.

[0074] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22 and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0075] The third touch trace L3 is disposed in the third sub-peripheral area Q23 and the first sub-peripheral area Q21, and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is disposed in the fourth sub-peripheral area Q24 and the second sub-peripheral area Q22, and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0076] Or, such as Figure 6As shown, the first binding area 11 is set in the third sub-peripheral area Q23, and the second binding area 12 is set in the fourth sub-peripheral area Q24.

[0077] Accordingly, the first touch trace L1 is disposed in the first sub-peripheral area Q21 and the third sub-peripheral area Q23, and extends from one end of the first touch electrode 13 to the first bonding area 11. The second touch trace L2 is disposed in the second sub-peripheral area Q22 and the fourth sub-peripheral area Q24, and extends from the other end of the first touch electrode 13 to the second bonding area 12.

[0078] The third touch trace L3 is located in the third sub-peripheral area Q23 and extends from one end of the second touch electrode 14 to the first bonding area 11. The fourth touch trace L4 is located in the fourth sub-peripheral area Q24 and extends from the other end of the second touch electrode 14 to the second bonding area 12.

[0079] It is important to note that Figures 1-6 The diagram only illustrates the routing trends of the first touch line L1, the second touch line L2, the third touch line L3, and the fourth touch line L4. It is not intended to limit the number of touch lines, and there is no electrical connection between the different touch lines.

[0080] Due to the addition of a bonding zone, the wiring design within the surrounding area Q2 also needs optimization compared to related technologies. Taking a product with a single-transmitter, single-receiver signal transmission mode (1T1R) as an example, combined with... Figures 1-6 Multiple binding areas are set on different sides of the peripheral area Q2, and the touch traces are more evenly distributed in the peripheral area Q2. The peripheral area Q2 has a high space utilization rate and less trace design pressure, which helps to avoid trace crossing and reduce signal interference.

[0081] This application will be based on Figure 2 The touch structure shown is used as an example for further explanation. The design principles of other embodiments are the same, and will not be elaborated here. Figures 7-9 As shown, Figure 7 for Figure 2 The diagram shows the wiring diagram of the area surrounding the touch structure. Figure 8 for Figure 7 The diagram shows a partially enlarged view of the touch structure in the first binding area. Figure 9 for Figure 7 The diagram shows a partial enlarged view of the touch structure in the second binding area.

[0082] In some embodiments, such as Figure 7 As shown, the first binding area 11 is set in the fourth sub-peripheral area Q24, and the second binding area 12 is set in the second sub-peripheral area Q22. For example... Figure 8As shown, along the extension direction of the fourth sub-peripheral region Q24, i.e., the first direction Y, the first bonding region 11 includes a plurality of terminals arranged in sequence, wherein the grounding terminal 20 is located at opposite ends. Figure 9 As shown, along the extension direction of the second sub-peripheral area Q22, that is, the second direction X, the second bonding area 12 also includes a plurality of terminals arranged in sequence, wherein the grounding terminal 20 is located at opposite ends.

[0083] The touch structure 10 also includes a grounding wire disposed within the peripheral area Q2, the grounding wire surrounding the touch area Q1. For example... Figures 7-9 As shown, the grounding wire includes a first sub-grounding wire G1 and a second sub-grounding wire G2. The first sub-grounding wire G1 and the second sub-grounding wire G2 are respectively connected to the grounding terminals 20 located at both ends of the first binding area 11, and extend around the touch area Q1 in opposite directions to the second binding area 12, and are respectively connected to the grounding terminals 20 located at both ends of the second binding area 12.

[0084] That is, the grounding wire formed by the first sub-grounding wire G1 and the second sub-grounding wire G2 is located on the side of the first touch trace L1, the second touch trace L2, the third touch trace L3, and the fourth touch trace L4 that is far from the touch area Q1. The grounding wire surrounds the touch traces and the touch area Q1, which can play a role in preventing electrostatic discharge and avoid electrostatic discharge impacting the touch traces or touch electrodes, thus improving the reliability of the touch detection function.

[0085] And, as Figure 7 In the illustrated embodiment, taking the first bonding area 11 on the touch structure 10 for electrical connection with the driving circuit as an example, the corresponding second bonding area 12 is covered and protected by insulating waterproof adhesive. The first sub-grounding wire G1 and the second sub-grounding wire G2 are not connected at the second bonding area 12, while the first sub-grounding wire G1 and the second sub-grounding wire G2 are both electrically connected to the grounding system in the driving circuit at the first bonding area 11. Based on this, the first sub-grounding wire G1 and the second sub-grounding wire G2 form a non-closed grounding wire outside the touch trace, thereby avoiding the generation of eddy currents in the closed loop, preventing the grounding wire from weakening the signal strength of the touch driving electrode, and avoiding affecting the touch sensitivity.

[0086] In some embodiments, such as Figure 8 As shown, the first bonding area 11 also includes a plurality of first terminals 31, a plurality of third terminals 33, a plurality of first shielding terminals 21, and a plurality of third shielding terminals 23 located between the grounding terminals 20. The first terminals 31 are connected to the first touch line L1, and the third terminals 33 are connected to the third touch line L3. The first terminals 31 and the third terminals 33 are located between the first shielding terminals 21, and the third shielding terminals 23 are located between the first terminals 31 and the third terminals 33.

[0087] like Figure 9 As shown, the second bonding area 12 also includes a plurality of second terminals 32, a plurality of fourth terminals 34, a plurality of second shielding terminals 22, and a plurality of fourth shielding terminals 24 located between the grounding terminals 20. The second terminals 32 are connected to the second touch trace L2, and the fourth terminals 34 are connected to the fourth touch trace L4. The second terminals 32 and the fourth terminals 34 are located between the second shielding terminals 22, and the fourth shielding terminals 24 are located between the second terminals 32 and the fourth terminals 34.

[0088] like Figure 7 As shown, the touch structure 10 also includes a first shielding line P1 and a second shielding line P2 disposed in the periphery. The first shielding line P1 extends along the extension direction of the first sub-grounding line G1 and is located on the side of the first sub-grounding line G1 closer to the touch area Q1. The first shielding line P1 includes a first sub-shielding line P11 and a second sub-shielding line P12. The first sub-shielding line P11 extends to the first bonding area 11 and connects to the first shielding terminal 21, and the second sub-shielding line P12 extends to the second bonding area 12 and connects to the second shielding terminal 22. The first sub-shielding line P11 and the second sub-shielding line P12 are not connected. In other words, similar to the first sub-grounding line G1, the first shielding line P1 extends from the first bonding area 11 to the second bonding area 12. The difference is that the first shielding line P1 has a break in the middle, so that the first shielding line P1 is divided into the first sub-shielding line P11 and the second sub-shielding line P12.

[0089] Similarly, the second shielding wire P2 extends along the extension direction of the second sub-grounding wire G2 and is located on the side of the second sub-grounding wire G2 closer to the touch area Q1. The second shielding wire P2 includes a third sub-shielding wire P21 and a fourth sub-shielding wire P22. The third sub-shielding wire P21 extends to the first bonding area 11 and connects to the first shielding terminal 21, and the fourth sub-shielding wire P22 extends to the second bonding area 12 and connects to the second shielding terminal 22. The third sub-shielding wire P21 and the fourth sub-shielding wire P22 are not connected. In other words, similar to the second sub-grounding wire G2, the second shielding wire P2 extends from the first bonding area 11 to the second bonding area 12 in the opposite direction to the first shielding wire P1. The difference is that the second shielding wire P2 has a break in the middle, so that the second shielding wire P2 is divided into the third sub-shielding wire P21 and the fourth sub-shielding wire P22.

[0090] like Figure 7 As shown, the first sub-shielding line P11 is located outside the first touch trace L1, the second sub-shielding line P12 is located outside the fourth touch trace L4, the third sub-shielding line P21 is located outside the third touch trace L3, and the fourth sub-shielding line P22 is located outside the second touch trace L2. This can shield the electromagnetic interference of the external environment on the corresponding touch traces, reduce external radiated noise, and improve system stability.

[0091] like Figures 7-8 As shown, within the sub-peripheral area (fourth sub-peripheral area Q24) where the first binding area 11 is located, the touch structure 10 also includes a third shielding line P3. The third shielding line P3 is located between the first touch trace L1 and the third touch trace L3, and is connected to the third shielding terminal 23, as shown. Figure 7 As shown, along the first direction Y, the third shielding line P3 extends to the boundary of the touch area Q1 near the first sub-peripheral area Q21, thereby separating the touch trace electrically connected to the first touch electrode 13 and the touch trace electrically connected to the second touch electrode 14. This helps to avoid signal crosstalk between the first touch electrode 13 and the second touch electrode 14 and reduce the reliability of touch detection.

[0092] Similarly, within the sub-peripheral area (second sub-peripheral area Q22) where the second binding area 12 is located, the touch structure 10 also includes a fourth shielding line P4. The fourth shielding line P4 is located between the second touch trace L2 and the fourth touch trace L4, and is connected to the fourth shielding terminal 24. Along the second direction X, the fourth shielding line P4 extends to the boundary of the touch area Q1 near the third sub-peripheral area Q23, thereby separating the touch trace electrically connected to the first touch electrode 13 and the touch trace electrically connected to the second touch electrode 14, which helps to avoid signal crosstalk and reduce the reliability of touch detection.

[0093] In some embodiments, such as Figure 1 As shown, both the first touch electrode 13 and the second touch electrode 14 are surface electrodes. For example, both the first touch electrode 13 and the second touch electrode 14 are made of indium tin oxide (ITO), and they can be disposed in the same layer along the thickness direction Z, with one of them bridged by a via in the insulating layer, thereby forming a surface electrode. Figure 1 The diagram shows a cross-extending electrode structure.

[0094] Alternatively, in some other embodiments, the first touch electrode 13 includes a metal mesh layer, and the second touch electrode 14 includes a second metal mesh layer. For example, in some metal mesh integrated capacitive touch structures (OGM), the materials of the first touch electrode 13 and the second touch electrode 14 both include aluminum, and they are separated by an insulating dielectric layer along the thickness direction Z.

[0095] On the other hand, this application also provides a touch display device, such as Figure 10 As shown, Figure 10 This is a schematic diagram of a touch display device provided in an embodiment of this application. The touch display device 40 includes a display panel 41 and a touch structure 10 mentioned in any of the embodiments of the first aspect above. The touch structure 10 is disposed on the display side of the display panel 41.

[0096] Depending on the light-emitting principle, the touch display device 40 can be a liquid crystal display (LCD), an electroluminescent display device, or a photoluminescent display device. If the touch display device is an electroluminescent display device, it can be an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED). If the display device is a photoluminescent display device, it can be a quantum dot photoluminescent display device.

[0097] Depending on the location of the touch structure 10, the touch display device 40 can also be divided into an external touch display device (the touch structure 10 is located outside the display panel 41 structure) and an embedded touch display device (the touch structure 10 is located inside the display panel 41 structure).

[0098] Regardless of the type of touch display device 40, its touch structure 10 has at least two bonding areas. For each bonding area, the first touch electrode 13 and the second touch electrode 14 extend to that bonding area through corresponding touch traces. In subsequent overall device design, selecting either bonding area ensures signal conduction on the first touch electrode 13 and the second touch electrode 14, guaranteeing normal touch detection. During overall device design, one bonding area can be flexibly selected as needed, allowing for more choices in the installation positions of circuit board components, etc., resulting in fewer design restrictions on the overall device structure, higher compatibility, and greater ease of achieving different overall device structure designs.

[0099] In some embodiments, such as Figure 10 As shown, the touch display device 40 also includes a driving circuit 42. The touch structure 10 also includes a protective adhesive layer 43, which covers one of the first bonding area 11 and the second bonding area 12, and the other of the second bonding area 12 and the first bonding area 11 is connected to the driving circuit 42.

[0100] For example, in the initial design finalization, the design requirement was that the bonding area should be located within the second sub-peripheral area Q22. However, in the subsequent actual overall mechanism design, it was necessary to change the design so that the bonding area was located in the first sub-peripheral area Q21. Based on the touch structure 10 of this application, it can flexibly meet both the initial and changed requirements. According to the changed requirements, a protective adhesive layer 43 is set on the second bonding area 12 for insulation protection and waterproof and salt spray protection. The first bonding area 11 is selected to be electrically connected to the drive circuit 42, thereby completing the subsequent overall mechanism setup. This approach offers high compatibility and low change costs.

[0101] The aforementioned touch display device 40 can be any device that displays text or images, whether moving (e.g., video) or stationary (e.g., still images). More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A touch structure, characterized in that, Including the touch area and surrounding area; The touch structure further includes a first binding area and a second binding area, both of which are located in the peripheral area; The touch structure further includes a plurality of first touch electrodes and a plurality of second touch electrodes disposed in the touch area, wherein the first touch electrodes extend along a first direction and the second touch electrodes extend along a second direction, and the first direction and the second direction intersect. The touch structure further includes multiple first touch lines, multiple second touch lines, multiple third touch lines, and multiple fourth touch lines disposed in the peripheral area. The first touch lines are electrically connected to one end of the first touch electrode and extend to the first bonding area. The second touch lines are electrically connected to the other end of the first touch electrode and extend to the second bonding area. The third touch trace is electrically connected to one end of the second touch electrode and extends to the first bonding area; the fourth touch trace is electrically connected to the other end of the second touch electrode and extends to the second bonding area.

2. The touch structure according to claim 1, characterized in that, Along the first direction, the peripheral area includes a first sub-peripheral area and a second sub-peripheral area disposed on opposite sides of the touch area; along the second direction, the peripheral area includes a third sub-peripheral area and a fourth sub-peripheral area disposed on opposite sides of the touch area. The first binding area and the second binding area are respectively located in two different sub-peripheral areas among the first sub-peripheral area, the second sub-peripheral area, the third sub-peripheral area, or the fourth sub-peripheral area.

3. The touch structure according to claim 2, characterized in that, The first binding area is located in the first sub-peripheral area, and the second binding area is located in the fourth sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and the fourth sub-peripheral area, and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the third sub-peripheral area and the first sub-peripheral area, and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the fourth sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

4. The touch structure according to claim 2, characterized in that, The first binding area is located in the fourth sub-peripheral area, and the second binding area is located in the second sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and the fourth sub-peripheral area, and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the fourth sub-peripheral area and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the third sub-peripheral area and the second sub-peripheral area, and extends from the other end of the second touch electrode to the second bonding area.

5. The touch structure according to claim 2, characterized in that, The first binding area is located in the third sub-peripheral area, and the second binding area is located in the second sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and the third sub-peripheral area, and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the third sub-peripheral area and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the fourth sub-peripheral area and the second sub-peripheral area, and extends from the other end of the second touch electrode to the second bonding area.

6. The touch structure according to claim 2, characterized in that, The first binding area is located in the first sub-peripheral area, and the second binding area is located in the third sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and the third sub-peripheral area, and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the fourth sub-peripheral area and the first sub-peripheral area, and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the third sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

7. The touch structure according to claim 2, characterized in that, The first binding area is set in the first sub-peripheral area, and the second binding area is set in the second sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the third sub-peripheral area and the first sub-peripheral area, and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the fourth sub-peripheral area and the second sub-peripheral area, and extends from the other end of the second touch electrode to the second bonding area.

8. The touch structure according to claim 2, characterized in that, The first binding area is located in the third sub-peripheral area, and the second binding area is located in the fourth sub-peripheral area; The first touch trace is disposed in the first sub-peripheral area and the third sub-peripheral area, and extends from one end of the first touch electrode to the first bonding area; The second touch trace is disposed in the second sub-peripheral area and the fourth sub-peripheral area, and extends from the other end of the first touch electrode to the second bonding area; The third touch trace is disposed in the third sub-peripheral area and extends from one end of the second touch electrode to the first bonding area; The fourth touch trace is disposed in the fourth sub-peripheral area and extends from the other end of the second touch electrode to the second bonding area.

9. The touch structure according to claim 2, characterized in that, The touch structure also includes a grounding wire disposed in the peripheral area, the grounding wire surrounding the touch area, and the grounding wire being located on the side of the first touch trace, the second touch trace, the third touch trace, and the fourth touch trace away from the touch area; Along the extension direction of the sub-peripheral area where the first bonding area is located, the first bonding area includes grounding terminals located at both ends; along the extension direction of the sub-peripheral area where the second bonding area is located, the second bonding area includes grounding terminals located at both ends. The grounding wire includes a first sub-grounding wire and a second sub-grounding wire. The first sub-grounding wire and the second sub-grounding wire are respectively connected to the grounding terminals located at both ends of the first bonding area, and extend around the touch area to the second bonding area in opposite directions, and are respectively connected to the grounding terminals located at both ends of the second bonding area.

10. The touch structure according to claim 9, characterized in that, The first bonding area also includes a plurality of first terminals, a plurality of third terminals, a plurality of first shielding terminals, and a plurality of third shielding terminals located between grounding terminals; the first terminals are connected to the first touch trace, and the third terminals are connected to the third touch trace; the first terminals and the third terminals are located between the first shielding terminals, and the third shielding terminals are located between the first terminals and the third terminals; The second bonding area also includes a plurality of second terminals, a plurality of fourth terminals, a plurality of second shielding terminals, and a plurality of fourth shielding terminals located between the grounding terminals; the second terminals are connected to the second touch trace, and the fourth terminals are connected to the fourth touch trace; the second terminals and the fourth terminals are located between the second shielding terminals, and the fourth shielding terminals are located between the second terminals and the fourth terminals; The touch structure also includes a first shielding wire and a second shielding wire disposed within the periphery; the first shielding wire extends along the extension direction of the first sub-grounding wire and is located on the side of the first sub-grounding wire closer to the touch area; the first shielding wire includes a first sub-shielding wire and a second sub-shielding wire; the first sub-shielding wire is connected to the first shielding terminal; the second sub-shielding wire is connected to the second shielding terminal; the first sub-shielding wire and the second sub-shielding wire are not connected. The second shielding wire extends along the extension direction of the second sub-grounding wire and is located on the side of the second sub-grounding wire closer to the touch area. The second shielding wire includes a third sub-shielding wire and a fourth sub-shielding wire. The third sub-shielding wire is connected to the first shielding terminal, and the fourth sub-shielding wire is connected to the second shielding terminal. The third sub-shielding wire and the fourth sub-shielding wire are not connected. Within the sub-peripheral area where the first binding area is located, the touch structure further includes a third shielding line, which is located between the first touch trace and the third touch trace, and is connected to the third shielding terminal. Within the sub-peripheral area where the second bonding area is located, the touch structure further includes a fourth shielding line, which is located between the second touch trace and the fourth touch trace, and is connected to the fourth shielding terminal.

11. The touch structure according to claim 1, characterized in that, Both the first touch electrode and the second touch electrode are surface electrodes; or, The first touch electrode includes a metal mesh layer, and the second touch electrode includes a second metal mesh layer.

12. A touch display device, characterized in that, include: Display panel; The touch structure as described in any one of claims 1 to 11, wherein the touch structure is disposed on the display side of the display panel.

13. The touch display device according to claim 12, characterized in that, The touch display device also includes a driving circuit; The touch structure also includes a protective adhesive layer that covers one of the first bonding area and the second bonding area, and the other of the second bonding area and the first bonding area is connected to the driving circuit.

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