Touch structure, touch module and electronic device with the same

Abstract

The present disclosure provides a touch structure, a touch module and an electronic device. The touch structure comprises a plurality of touch electrodes, a plurality of border wires and a flexible circuit board. The plurality of border wires are located in a non-display area. The plurality of border wires comprise a plurality of first side border wires and a plurality of second side border wires. Each of the plurality of touch electrodes is electrically connected to one of the plurality of first side border wires and one of the plurality of second side border wires to form a touch loop. The plurality of first side border wires and the plurality of second side border wires are respectively arranged on two sides of a display area. The flexible circuit board is located in the non-display area and is electrically connected to the plurality of border wires. The sum of the resistances of the touch electrode, the first side border wire electrically connected to the touch electrode and the second side border wire electrically connected to the touch electrode in each touch loop is within 10%, which helps to ensure the touch sensitivity of each touch position and improve the use performance.

Description

Technical Field

[0001] This disclosure relates to the field of touch module technology, and in particular, to a touch structure, a touch module, and an electronic device having the same. Background Technology

[0002] As people's living standards improve, they are increasingly pursuing narrow bezels and "maximum screen-to-body ratio" in smartphones and tablets to enhance visual appeal and human-computer interaction.

[0003] In narrow bezel designs, the wiring space in the bezel area is significantly compressed, resulting in increasingly thinner bezel traces and smaller spacing between them. However, these increasingly thinner traces lead to higher resistance, which severely impacts signal transmission speed and further reduces sensitivity. Moreover, serpentine routing is often used in the bezel area (see reference). Figure 1 With the cross-sectional area S remaining constant, the larger L is, the larger R will be. Moreover, the resistance of each wire in the frame is not the same. The different resistance values ​​will cause delays in electrical signal transmission and an increase in power consumption, which will affect the performance and lifespan of the device. Utility Model Content

[0004] In view of this, one embodiment of the present disclosure provides a touch structure, a touch module, and an electronic device having the same, aiming to solve the problems of excessive resistance and resistance mismatch caused by narrow bezels in traditional touch structures, which in turn affect their sensitivity, power consumption, and lifespan.

[0005] In a first aspect, an embodiment of this disclosure provides a touch structure including a display area and a non-display area located around the display area. The touch structure includes multiple touch electrodes, multiple frame wires, and a flexible circuit board. The multiple touch electrodes are located in the display area. The multiple frame wires are located in the non-display area, and include multiple first side frame wires and multiple second side frame wires. Each of the multiple touch electrodes is electrically connected to one of the first side frame wires and one of the second side frame wires to form a touch circuit. The multiple first side frame wires and multiple second side frame wires are respectively disposed on both sides of the display area. The flexible circuit board is located in the non-display area and is electrically connected to the multiple frame wires. The sum of the resistance values ​​of the touch electrodes, the first side frame wires electrically connected to the touch electrodes, and the second side frame wires electrically connected to the touch electrodes in each touch circuit differs by less than 10%.

[0006] As one possible implementation, multiple first side-frame wires are sequentially arranged on the first side of multiple touch electrodes, and the linewidth of the multiple first side-frame wires gradually increases with the increase of the wire length of the touch electrode in the touch circuit. Multiple second side-frame wires are sequentially arranged on the second side of multiple touch electrodes, and the linewidth of the multiple second side-frame wires gradually increases with the increase of the wire length of the touch electrode in the touch circuit.

[0007] As one possible implementation, the line width ratio of any two adjacent border wires in the multiple first side border wires is equal, and the line width ratio of any two adjacent border wires in the multiple second side border wires is also equal.

[0008] As one possible implementation, the linewidth ratio of two adjacent first side frame wires among multiple first side frame wires is greater than the linewidth ratio of two adjacent first side frame wires among multiple first side frame wires that are closer to the touch electrode in the touch circuit, and / or the linewidth ratio of two adjacent second side frame wires among multiple second side frame wires is greater than the linewidth ratio of two adjacent second side frame wires among multiple second side frame wires that are closer to the touch electrode in the touch circuit.

[0009] As one possible implementation, each of the multiple first side-edge wires includes multiple first side-edge wire segments. These segments are located from the flexible circuit board to the electrically connected touch electrode and are perpendicular to the touch electrode in the touch circuit. The linewidth of the first side-edge wire segment farther from the touch electrode in the touch circuit is greater than the linewidth of the first side-edge wire segment closer to the touch electrode. And / or each of the multiple second side-edge wires includes multiple second side-edge wire segments. These segments are located from the flexible circuit board to the electrically connected touch electrode and are perpendicular to the touch electrode in the touch circuit. The linewidth of the second side-edge wire segment farther from the touch electrode in the touch circuit is greater than the linewidth of the second side-edge wire segment closer to the touch electrode.

[0010] As one possible implementation, the line width ratio of two adjacent first-side conductor segments in a plurality of first-side conductor segments is equal, and / or the line width ratio of two adjacent second-side conductor segments in a plurality of second-side conductor segments is equal.

[0011] As one possible implementation, the linewidth ratio of two adjacent first-side conductor segments in a plurality of first-side conductor segments is greater than the linewidth ratio of two first-side conductor segments that are closer to the touch electrode in the touch circuit, and / or the linewidth ratio of two adjacent second-side conductor segments in a plurality of second-side conductor segments is greater than the linewidth ratio of two second-side conductor segments that are closer to the touch electrode in the touch circuit.

[0012] As one possible implementation, each of the plurality of first side-edge wires includes a first side connecting wire, which is parallel to the touch electrode in the touch circuit and is used to connect the flexible circuit board and the first side wire segment. The first side wire segment is perpendicular to the touch electrode in the touch circuit. Each of the plurality of second side-edge wires includes a second side connecting wire, which is parallel to the touch electrode in the touch circuit and is used to connect the flexible circuit board and the second side wire segment. The second side wire segment is perpendicular to the touch electrode in the touch circuit. The linewidth of the first side connecting wire gradually increases with the distance from the flexible circuit board, and / or the linewidth of the second side connecting wire gradually increases with the distance from the flexible circuit board.

[0013] As one possible implementation, the width difference between different positions of the first side border area formed by multiple first side border lines is within 2%, and the width difference between different positions of the second side border area formed by multiple second side border lines is within 2%.

[0014] Secondly, one embodiment of this disclosure provides a touch module, which includes a substrate and any of the above-described touch structures.

[0015] Thirdly, one embodiment of this disclosure provides an electronic device that includes the aforementioned touch module.

[0016] By controlling the resistance difference of each touch circuit L to within 10%, the current distribution throughout the touch structure becomes more balanced. This helps prevent overheating caused by excessive current density in localized areas, thus extending the lifespan of electronic devices. Furthermore, the more even distribution of the electric field ensures that the transmission rate of the electrical signal at each touch electrode remains within a certain range, improving touch accuracy, responsiveness, and operational stability at different touch points, thereby enhancing the performance and user experience of electronic devices. In addition, this design helps reduce the potential difference between touch circuits, bringing it close to zero. This reduces the risk of injury, improves the safety and reliability of electronic devices during use and production, and further increases production yield. Attached Figure Description

[0017] It should be understood that the following figures only illustrate certain embodiments of this disclosure and should not be construed as limiting the scope.

[0018] It should be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0019] It should be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0020] Figure 1 This is a schematic diagram of the touch structure in related technologies.

[0021] Figure 2 This is a schematic diagram of a touch structure provided in an embodiment of the present disclosure.

[0022] Figure 3 This is a schematic diagram of a touch structure provided in another embodiment of the present disclosure.

[0023] Figure 4 for Figure 3 A partial structural diagram of the touch control structure.

[0024] Figure 5a for Figure 3 A schematic diagram of a touch circuit located at the edge of the touch structure.

[0025] Figure 5b for Figure 3 A schematic diagram of a touch circuit located in the middle of the non-display area.

[0026] Figure 5c for Figure 3 A schematic diagram of a touch circuit located at the edge of the display area.

[0027] Figure 6a for Figure 3 A schematic diagram of another layer of touch structure.

[0028] Figure 6b for Figure 6a A partial structural diagram of a touch circuit located at the edge of the touch structure.

[0029] Figure 6c for Figure 6a A partial structural diagram of a touch circuit located in the middle of the non-display area.

[0030] Figure 6d for Figure 6a A partial structural diagram of a touch circuit located at the edge of the display area.

[0031] Figure 7 This is a schematic diagram of the structure of a touch module provided in an embodiment of the present disclosure. Detailed Implementation

[0032] The embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that there are many ways to implement this disclosure, and it should not be construed as being limited to the embodiments set forth herein. The embodiments set forth herein are only for a more thorough and clear understanding of this disclosure.

[0033] The touch structure 100 typically includes a display area AA and a non-display area BM located around the display area AA. In a narrow bezel design, the bezel area within the non-display area BM is gradually compressed, making the bezel wires within the bezel area increasingly thinner. According to the resistance formula R=ρ... As can be seen from (L / S), when L remains constant, a decrease in the cross-sectional area S will directly lead to an increase in the resistance R.

[0034] In view of this, refer to Figures 1 to 7 This disclosure provides a touch structure 100. Compared to traditional touch structures, by controlling the resistance values ​​of different touch circuits within a certain range, it helps ensure that the transmission rate of electrical signals between different touch circuits is within a certain range, making the current distribution of the entire touch structure more balanced. This helps avoid overheating caused by excessive current density in local areas, thereby extending the service life of electronic devices. Furthermore, because the electric field distribution is more balanced, it helps ensure that the transmission rate of electrical signals at each touch electrode is within a certain range, thus improving the touch accuracy, responsiveness, and operational stability of different touch points during use, thereby enhancing the performance and user experience of electronic devices. In addition, this design helps reduce the potential difference between touch circuits, bringing the potential difference between each touch circuit close to zero, thereby reducing the risk of injury and improving the safety and reliability of electronic devices during use and production, further contributing to improved production yield.

[0035] To facilitate understanding, the overall structure of the touch structure 100 will be illustrated below with an example. It should be understood that the overall structure of the touch structure 100 is not limited to the description below. For example, one or more elements mentioned below may be omitted or replaced, and their layout relationships may be interchanged.

[0036] It should be noted that, in this disclosure, the width direction can refer to a direction orthogonal to the length direction. In the accompanying drawings of this disclosure, arrows X+ and X- are in opposite directions; arrow X+ can be used to indicate the right side of the width direction, and arrow X- can be used to indicate the left side of the width direction. Arrows Y+ and Y- are in opposite directions; arrow Y+ can be used to indicate one side of the length direction, and arrow Y- can be used to indicate the other side of the length direction.

[0037] refer to Figure 2 and Figure 3 This disclosure provides a touch structure 100, which includes multiple touch electrodes 10, multiple frame wires 20, and a flexible circuit board 30. The touch electrodes 10 are located in the display area AA, while the frame wires 20 and the flexible circuit board 30 are located in the non-display area BM. The touch electrodes 10 may include multiple lateral touch electrodes 10a, which can be arranged along the length or width direction. The spacing between the multiple lateral touch electrodes 10a can be flexibly designed according to factors such as sensitivity, transmittance, and anti-interference, for example, the spacing can be 1 mm - 5 mm, 4 mm - 6 mm, 6 mm - 10 mm, etc., without specific limitations. The touch electrodes 10 are generally made of metal, such as silver nanowires or indium tin oxide (ITO), without specific limitations. The resistance values ​​of the touch electrodes 10 arranged along the length direction are approximately the same, generally with a difference of less than 2%.

[0038] Continue to refer to Figure 2 , Figure 3 , Figures 5a to 5c The multiple frame wires 20 may include multiple first side frame wires 21 and multiple second side frame wires 23. Each touch electrode 11 among the multiple touch electrodes 10 is electrically connected to one of the first side frame wires 211 and one of the second side frame wires 231 to form a touch circuit L. The multiple first side frame wires 21 and multiple second side frame wires 23 are respectively disposed on both sides of the display area AA. The flexible circuit board 30 is electrically connected to the multiple frame wires 20 for the transmission of electrical signals, so that the sum of the resistance values ​​of the touch electrodes 10, the first side frame wires 21 electrically connected to the touch electrodes 10, and the second side frame wires 23 electrically connected to the touch electrodes in each touch circuit L differs by less than 10%.

[0039] By controlling the resistance difference of each touch circuit L to within 10%, the current distribution throughout the touch structure becomes more balanced. This helps prevent overheating caused by excessive current density in localized areas, thus extending the lifespan of electronic devices. Furthermore, the more even distribution of the electric field ensures that the transmission rate of the electrical signal at each touch electrode remains within a certain range, improving touch accuracy, responsiveness, and operational stability at different touch points, thereby enhancing the performance and user experience of electronic devices. In addition, this design helps reduce the potential difference between touch circuits, bringing it close to zero. This reduces the risk of injury, improves the safety and reliability of electronic devices during use and production, and further increases production yield.

[0040] It is understood that each horizontal touch electrode 10 is electrically connected to a first side frame wire 211 and a second side frame wire 231 at both ends, so that the flexible circuit board 30 receives the electrical signal of the corresponding touch circuit L. The non-display area BM may include a first side frame area BM1, a second side frame area BM2, and a third side frame area BM3. Multiple first side frame wires 21 may be located in the first side frame area BM1 and the third side frame area BM3, multiple second side frame wires 23 may be located in the second side frame area BM2 and the third side frame area BM3, and the flexible circuit board 30 may be located in the third side frame area BM3.

[0041] refer to Figure 3 The width W1 of the first side frame region BM1, formed by multiple first side frame conductors, differs by less than 2% at different locations. Similarly, the width W2 of the second side frame region BM2, formed by multiple second side frame conductors, differs by less than 2% at different locations. Specifically, in the first side frame region BM1, the widths formed by multiple different first side frame conductors along the width X+ direction are approximately the same, i.e., W11=W12=W13=W14=W15. Likewise, in the second side frame region BM2, the widths formed by multiple different second side frame conductors along the width X+ direction are approximately the same, i.e., W21=W22=W23=W24=W25. This design facilitates full utilization of both the first and second side frame regions and ensures that different touch circuits have relatively small resistance differences, thereby helping to ensure that the transmission rate of the electrical signal from the touch electrode at each location remains within a certain range.

[0042] refer to Figure 2 and Figure 3 Multiple first side frame wires 21 can be arranged sequentially on the first side (i.e., the left side) of multiple touch electrodes 10. The line width D1 of the multiple first side frame wires 21 gradually increases with the increase of the wire length of the touch electrode 10 in the touch circuit L. Multiple second side frame wires 23 can be arranged sequentially on the second side (i.e., the right side) of multiple touch electrodes 10. The line width D2 of the multiple second side frame wires 23 gradually increases with the increase of the wire length of the touch electrode 10 in the touch circuit L.

[0043] It's important to understand that the sequential arrangement can be interpreted as a progression from closest to furthest relative to the touch electrode 10. For example, multiple first-side border wires 21 and multiple second-side border wires 23 are arranged along the width X+ direction on the first and second sides of each touch electrode, respectively. The closer to the display area AA, the narrower the line width of the border wires; the closer to the edge of the non-display area BM, the wider the line width of the border wires. Specifically, the line width D2 of the multiple second-side border wires 23 located in the second border area BM2 gradually increases along the width X+ direction from the length position of the touch electrode; similarly, the line width D1 of the multiple first-side border wires 21 located in the first border area BM1 gradually increases along the opposite width X- direction from the length position of the touch electrode 10.

[0044] In this way, the overall structure of the multiple border lines 10 shows that the border lines closer to the display area AA have smaller line widths and shorter lengths, while the border lines closer to the edge of the non-display area BM have larger line widths and longer lengths. Therefore, according to the resistance formula R=ρ As can be seen from (L / S), it is convenient to keep the resistance of each frame wire consistent, which helps to ensure that the sum of the resistance values ​​of the touch electrode 10, the first side frame wire 21 electrically connected to the touch electrode 10, and the second side frame wire 23 electrically connected to the touch electrode in each touch circuit L differs by less than 10%. This ensures that the transmission rate of the electrical signal of the touch electrode at each position is within a certain range, which helps to improve the sensitivity and service life.

[0045] It should be noted that, according to the resistance formula R=ρ As can be seen from (L / S), increasing both the width and length of the border wires simultaneously does not change the overall resistance of the border wires. Therefore, the length and width of the border wires can be adjusted simultaneously according to their different positions to ensure that the resistance remains constant.

[0046] refer to Figure 2 The linewidth ratio of any two adjacent border wires in the plurality of first side border wires 21 is equal, and the linewidth ratio of any two adjacent border wires in the plurality of second side border wires 23 is equal. That is to say, the linewidth D1 of the plurality of first side border wires 21 located in the first border region BM1 gradually increases in the opposite direction of width X-, and the rate of increase is consistent. Specifically, the ratio of the linewidth of the first side border wire 211 to the linewidth of the first side border wire 212 located in the first border region BM1 is equal to the ratio of the linewidth of the first side border wire 212 to the linewidth of the first side border wire 213, and the ratio of the linewidth of the first side border wire 212 to the linewidth of the first side border wire 213 is equal to the ratio of the linewidth of the first side border wire 213 to the linewidth of the first side border wire 214.

[0047] Similarly, the linewidth D2 of the multiple second side-border wires 23 located in the second border region BM2 gradually increases along the width direction, and the rate of increase remains consistent. Specifically, the ratio of the linewidth of the second side-border wire 231 to the linewidth of the second side-border wire 232 located in the second border region BM2 is equal to the ratio of the linewidth of the second side-border wire 232 to the linewidth of the second side-border wire 233, and the ratio of the linewidth of the second side-border wire 232 to the linewidth of the second side-border wire 233 is equal to the ratio of the linewidth of the second side-border wire 233 to the linewidth of the second side-border wire 234. Multiple first side-border wires with uniformly varying linewidths and multiple second side-border wires with uniformly varying linewidths help reduce processing difficulty, thereby improving manufacturing efficiency and reducing processing costs.

[0048] It is understood that the linewidth of the first side bezel conductor 211 among the multiple first side bezel conductors 21 increases uniformly along the opposite X- direction, and the linewidth of each adjacent second side bezel conductor 231 among the multiple second side bezel conductors 23 increases uniformly along the X+ direction. Furthermore, the rate of increase in the linewidth of the bezel conductors can be flexibly designed according to the size of the non-display area (BM) in different sized display devices; for example, the rate of increase in the linewidth of the bezel conductors can be less than 20 and greater than 1.1.

[0049] In one embodiment, multiple first side frame wires 21 and multiple second side frame wires 23 are symmetrically arranged, and the line width D1 of the multiple first side frame wires 21 and the line width D2 of the multiple second side frame wires 23 gradually increase in a ratio of 1:1.5.

[0050] In one embodiment, multiple first side frame wires 21 and multiple second side frame wires 23 are symmetrically arranged, and the line width D1 of the multiple first side frame wires 21 and the line width D2 of the multiple second side frame wires 23 gradually increase in a ratio of 1:2.

[0051] In one embodiment, only the line width ratio of any two adjacent border wires in the plurality of first side border wires 21 may be equal, and the line width ratio of any two adjacent border wires in the plurality of second side border wires 23 may not be equal.

[0052] In another embodiment, only the line width ratio of any two adjacent border wires in the plurality of second side border wires 23 is equal, and the line width ratio of any two adjacent border wires in the plurality of first side border wires 21 is not equal.

[0053] refer to Figure 3 and Figure 4The ratio of the line width D1 of two adjacent first side frame wires 211 among the multiple first side frame wires 21 is greater than the ratio of the line width D1 of two adjacent first side frame wires 211 among the multiple first side frame wires 21 that are closer to the touch electrode 10 in the touch circuit L. And the ratio of the line width D2 of two adjacent second side frame wires 231 among the multiple second side frame wires 23 is greater than the ratio of the line width of two adjacent second side frame wires 231 among the multiple second side frame wires 23 that are closer to the touch electrode 10 in the touch circuit L.

[0054] It is understandable that the linewidth D1 of adjacent first side frame conductors 211 among the multiple first side frame conductors 21 increases in width along the opposite X- direction, and the rate of widening gradually increases. Similarly, the linewidth D3 of adjacent second side frame conductors 231 among the multiple second side frame conductors 23 increases in width along the X+ direction, and the rate of widening gradually increases. This helps to further reduce the difference in resistance between the touch electrode 10, the first side frame conductor 21 electrically connected to the touch electrode, and the second side frame conductor 23 electrically connected to the touch electrode in each touch circuit L, thus further improving sensitivity and lifespan. Furthermore, the rate of increase in the linewidth of the frame conductors can be flexibly designed according to the size of the non-display area BM in different sized display devices; for example, the rate of increase in the linewidth of the frame conductors can be less than 40 and greater than 1.1.

[0055] In one embodiment, the ratio of the linewidth D1 of two adjacent first side frame wires 211 among the plurality of first side frame wires 21 is greater than the ratio of the linewidth D1 of two adjacent first side frame wires 211 among the plurality of first side frame wires 21 that are closer to the touch electrode 10 in the touch circuit L, and the ratio of the linewidth D2 of two adjacent second side frame wires 231 among the plurality of second side frame wires 23 is equal to or less than the ratio of the linewidth of two adjacent second side frame wires 231 among the plurality of second side frame wires 23 that are closer to the touch electrode 10 in the touch circuit L.

[0056] In another embodiment, the ratio of the line width D2 of two adjacent first side frame wires 231 among the plurality of second side frame wires 23 is greater than the ratio of the line width D2 of two adjacent second side frame wires 231 among the plurality of second side frame wires 23 that are closer to the touch electrode 10 in the touch circuit L, and the ratio of the line width D1 of two adjacent first side frame wires 211 among the plurality of first side frame wires 21 is equal to or less than the ratio of the line width of two adjacent first side frame wires 211 among the plurality of first side frame wires 21 that are closer to the touch electrode 10 in the touch circuit L.

[0057] refer to Figures 2 to 5cEach of the multiple first side frame wires 21 can include multiple first side wire segments 211a. These segments are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode in the touch circuit L. The line width D3 of the first side wire segments 211a farther from the touch electrode 10 in the touch circuit L is greater than the line width D3 of the first side wire segments 211a closer to the touch electrode 10 in the touch circuit L. Furthermore, each of the multiple second side frame wires 231 includes multiple second side wire segments 231a. The multiple second side wire segments 231a are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode 10 in the touch circuit L. The line width D4 of the second side wire segment 231a that is farther away from the touch electrode 10 in the touch circuit L is greater than the line width D4 of the second side wire segment 231a that is closer to the touch electrode 10 in the touch circuit L.

[0058] For example, for each first side border wire 211, along the length Y+ direction, the first side border wire 211 may include multiple first side wire segments 211a, and the line widths of the multiple first side wire segments 211a are D31, D32, D33, D34 and D35 respectively (see reference). Figure 5a The line widths of the multiple first-side wire segments 211a are: D31 < D32 < D33 < D34 < D35, so that the first-side border wires fully utilize the first border area. Similarly, for each second-side border wire 231, along the length Y+ direction, the second-side border wire 231 includes multiple second-side wire segments 231a, with line widths of D41, D42, D43, D44 and D45 respectively, and the line widths of the multiple second-side wire segments 211a are: D41 < D42 < D43 < D44 < D45, so that the second-side border wires fully utilize the second border area.

[0059] It is understood that each first side border conductor 211 may include multiple first side conductor segments 211a with gradually increasing linewidth D3 along the length direction, and the linewidth of the first side conductor segment 211a furthest from the flexible circuit board 30 can be up to the width of the first border area. Similarly, each second side border conductor 231 may include multiple second side conductor segments 231a with gradually increasing linewidth D4 along the length direction, and the linewidth of the second side conductor segment 231a furthest from the flexible circuit board 30 can be up to the width of the second border area. In this way, the outermost border conductor can make full use of the border area of ​​the non-display area to further reduce the resistance of the outermost border conductor, thereby helping to ensure that the resistance difference of different touch circuits is within 10%.

[0060] In one example, each of the multiple first side-edge wires 211 may include multiple first side-edge wire segments 211a. These segments are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode 10 in the touch circuit L. The line width D3 of the first side-edge wire segments 211a farther from the touch electrode 10 in the touch circuit L is greater than the line width D1 of the first side-edge wire segments 211a closer to the touch electrode 10 in the touch circuit L. The multiple second side-edge wires 23 are not specifically limited.

[0061] In another example, each of the multiple second side frame conductors 231 includes multiple second side conductor segments 231a. These segments are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode 10 in the touch circuit L. The line width D4 of the second side conductor segment 231a farther from the touch electrode 10 in the touch circuit L is greater than the line width D2 of the second side conductor segment 231a closer to the touch electrode 10 in the touch circuit L. The multiple first side frame conductors 21 are not specifically limited.

[0062] refer to Figure 5a The line width D3 of two adjacent first-side conductor segments 211a is equal, and the line width D4 of two adjacent second-side conductor segments 231a is equal.

[0063] In other words, the line width of each first side frame conductor 211 segment 211a increases along its length, and the rate of widening is consistent. Specifically, the line width of the multiple first side frame conductor segments 211a is related as follows: D35:D34=D34:D33=D33:D32=D32:D31. Similarly, the line width of each second side frame conductor 231 segment 231a increases along its length, and the rate of widening is consistent. Specifically, the line width of the multiple second side frame conductor segments 231a is related as follows: D45:D44=D44:D43=D43:D42=D42:D41.

[0064] The use of multiple first-side conductor segments with uniformly varying linewidths and multiple second-side conductor segments with uniformly varying linewidths helps reduce processing difficulty, thereby improving manufacturing efficiency and reducing processing costs.

[0065] In one example, the line width D3 ratio of two adjacent first-side conductor segments 211a is equal, while the line width D4 ratio of two adjacent second-side conductor segments 231a is not equal.

[0066] In another example, the line width D3 ratio of two adjacent second-side conductor segments in a plurality of second-side conductor segments 231a is equal, and the line width D4 ratio of two adjacent first-side conductor segments in a plurality of first-side conductor segments 211a is not equal.

[0067] In one example, the linewidth ratio of two adjacent first-side conductor segments 211a is greater than the linewidth ratio of two first-side conductor segments that are closer to the touch electrode in the touch circuit, and the linewidth ratio of two adjacent second-side conductor segments 231a is greater than the linewidth ratio of two second-side conductor segments that are closer to the touch electrode in the touch circuit.

[0068] It is understood that the linewidth of the first-side conductor segments 211a increases along the length direction, and the rate of widening gradually increases. Similarly, the linewidth of the second-side conductor segments 231a increases along the length direction, and the rate of widening gradually increases. This allows for further reduction of the sum of the resistance values ​​of the touch electrodes, the first-side frame conductors electrically connected to the touch electrodes, and the second-side frame conductors electrically connected to the touch electrodes in each touch circuit, while fully utilizing the bezel area. This further improves the sensitivity and lifespan of the device. Furthermore, the rate of increase in the linewidth of the first-side conductor segments and the linewidth of the second-side conductor segments can be flexibly designed according to the size of the non-display area (BM) in display devices of different sizes.

[0069] In another example, the ratio of the linewidths of two adjacent first-side conductor segments in a plurality of first-side conductor segments is greater than the ratio of the linewidths of two first-side conductor segments that are closer to the touch electrode in the touch circuit, and the ratio of the linewidths of two adjacent second-side conductor segments in a plurality of second-side conductor segments is less than or equal to the ratio of the linewidths of two second-side conductor segments that are closer to the touch electrode in the touch circuit.

[0070] In another example, the ratio of the linewidths of two adjacent second-side conductor segments in a plurality of second-side conductor segments is greater than the ratio of the linewidths of two second-side conductor segments that are closer to the touch electrode in the touch circuit, and the ratio of the linewidths of two adjacent first-side conductor segments in a plurality of first-side conductor segments is less than or equal to the ratio of the linewidths of two first-side conductor segments that are closer to the touch electrode in the touch circuit.

[0071] refer to Figures 5a to 6d Each of the multiple first side frame wires 21 may include a first side connecting wire 2111, which is parallel to the touch electrode 10 in the touch circuit L and is used to connect the flexible circuit board 30 and the first side wire segment 211a. The first side wire segment 211a is perpendicular to the touch electrode 10 in the touch circuit L. Each of the multiple second side frame wires 23 may include a second side connecting wire 2311, which is parallel to the touch electrode 10 in the touch circuit L and is used to connect the flexible circuit board 30 and the second side wire segment 231a. The second side wire segment 231a is perpendicular to the touch electrode 10 in the touch circuit L. The line width D11 of the first side connecting wire 2111 gradually increases with the distance from the flexible circuit board 30, and the line width of the second side connecting wire 2311 also gradually increases with the distance from the flexible circuit board 30.

[0072] It should be noted that the rate at which the linewidth D11 of the first-side connecting wire 2111 increases along the opposite width X- direction can remain constant, increase, or decrease. Similarly, the rate at which the linewidth D21 of the second-side connecting wire 2311 increases along the width X+ direction can remain constant, increase, or decrease.

[0073] In one example, the line width D11 of the first-side connecting wire 2111 gradually increases with the distance from the flexible circuit board 30, while the line width of the second-side connecting wire 2311 is not specifically limited.

[0074] In another example, the line width of the second-side connecting wire 2311 gradually increases with the distance from the flexible circuit board, while the line width of the first-side connecting wire 2111 is not specifically limited.

[0075] The resistance of wires with different side borders will be calculated below, taking the first side border wires and the second side border wires as symmetrical examples.

[0076] refer to Figures 2 to 6d The width W1 of the first side border region BM1 formed by multiple first side border wires differs by less than 2% at different positions, and the width W2 of the second side border region BM2 formed by multiple second side border wires differs by less than 2% at different positions. Multiple first side border wires 21 can be arranged sequentially on the first side (i.e., the left side) of multiple touch electrodes 10. The line width D1 of the multiple first side border wires 21 gradually widens as the distance from the wire length of the touch electrode 10 in the touch circuit L increases. (Reference) Figures 5a to 5c The line widths at the bottommost point closest to the flexible circuit board are 1.43mm, 0.56mm, and 0.31mm, respectively. Each of the multiple first side frame conductors 211 may include multiple first side conductor segments 211a. These segments are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode in the touch circuit L. The line width D3 of the first side conductor segments 211a farther from the touch electrode 10 in the touch circuit L is greater than the line width D3 of the first side conductor segments 211a closer to the touch electrode 10 in the touch circuit L. Furthermore, each of the multiple second side frame conductors 231 includes multiple second side conductor segments 231a. These segments are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and are perpendicular to the touch electrode 10 in the touch circuit L. The line width D4 of the second side conductor segment 231a farther from the touch electrode 10 in the touch circuit L is greater than the line width D4 of the second side conductor segment 231a closer to the touch electrode 10 in the touch circuit L. (Reference) Figures 5a to 5c Along the length direction Y+, the line widths of the multiple first-side conductor segments 211a are as follows: D31=1.43mm, D32=1.72mm, D33=2.35mm, D34=2.8mm, D35=5.11mm, D351=1.12mm, D352=0.57mm, D353=0.56mm, and D3511=0.31mm.

[0077] refer to Figures 5a to 5cCalculations show that the resistance values ​​of the multiple first-side wire segments 211a are as follows: R(35) = 0.102Ω, R(34) = 0.131Ω, R(33) = 0.186Ω, R(32) = 0.341Ω, R(31) = 0.878Ω. The resistances of the first-side connecting wires 2111 connected to the flexible circuit board are 5.187Ω and 0.966Ω respectively, and R(total 1) = 16.08Ω. R(351) = 0.446Ω, R(352) = 0.7Ω, R(353) = 1.52Ω. The resistances of the first-side connecting wires 2111 connected to the flexible circuit board are 3.67Ω and 1.46Ω respectively, and R(total 2) = 16.08Ω. R(3511) = 1.85Ω, the resistances of the flexible circuit board connected by the first connecting wire 2111 are 4.09Ω and 0.878Ω respectively, and R(total 3) = 16.08Ω.

[0078] refer to Figure 6a and 6b For the first-side connecting wire 2111, along the width X+ direction, R(D11) is successively 0.114Ω, 0.176Ω, 0.267Ω, 0.433Ω, and 1.768Ω. The resistance of the portion of the first-side connecting wire 2111 connected to the flexible circuit board is 3.57Ω. R(total 4) = 13.16Ω. (Reference) Figure 6a and 6c Along the width X+ direction, R(D11) is successively 0.41Ω, 1.7Ωh, and 0.98Ω, and the resistance of the portion of the flexible circuit board connected by the first side connecting wire 2111 is 4.23Ω. R(total 5) = 13.136Ω. (Reference) Figure 6a and 6d Along the width X+ direction, R(D11) = 1.59Ω, and the resistance of the part of the flexible circuit board connected by the first side connecting wire 2111 is 4.72Ω. R(total 6) = 13.13Ω.

[0079] In conclusion, Figures 5a to 5c As can be seen, the resistance of the wires on the first side frame at different positions is the same. Figures 6a to 6d It can be seen that the resistance of the first-side connecting wires at different locations differs by 0.03Ω. Therefore, the resistance difference of different touch circuits is within 10%, which makes the current distribution of the entire touch structure more balanced, helps to avoid overheating caused by excessive current density in local areas, and thus helps to extend the service life of electronic devices.

[0080] refer to Figure 2 and Figure 7This disclosure also discloses a touch module 200, which includes a substrate and a touch structure 100. The touch structure 100 may include a plurality of touch electrodes 10, a plurality of frame wires 20, and a flexible circuit board 30. The plurality of touch electrodes 10 may be located in the display area AA. The plurality of frame wires 20 may include a plurality of first side frame wires 21 and a plurality of second side frame wires 23. Each of the plurality of touch electrodes 10 is electrically connected to one of the first side frame wires 211 and one of the second side frame wires 231 to form a touch circuit L. The plurality of first side frame wires 21 and the plurality of second side frame wires 23 are respectively disposed on both sides of the display area AA. The flexible circuit board 30 is electrically connected to the plurality of frame wires 20. The sum of the resistance values ​​of the touch electrode 10, the first side frame wire 21 electrically connected to the touch electrode 10, and the second side frame wire 23 electrically connected to the touch electrode in each touch circuit L differs by less than 10%.

[0081] By controlling the resistance difference of each touch circuit L to within 10%, the current distribution throughout the touch structure becomes more balanced. This helps prevent overheating caused by excessive current density in localized areas, thus extending the lifespan of electronic devices. Furthermore, the more even distribution of the electric field ensures that the transmission rate of the electrical signal at each touch electrode remains within a certain range, improving touch accuracy, responsiveness, and operational stability at different touch points, thereby enhancing the performance and user experience of electronic devices. In addition, this design helps reduce the potential difference between touch circuits, bringing it close to zero. This reduces the risk of injury, improves the safety and reliability of electronic devices during use and production, and further increases production yield.

[0082] This disclosure also discloses an electronic device including a touch module 200 having the above-described structure. The touch module 200 includes a substrate and a touch structure 100. The touch structure 100 may include a plurality of touch electrodes 10, a plurality of frame wires 20, and a flexible circuit board 30. The plurality of touch electrodes 10 may be located in a display area AA. The plurality of frame wires 20 may include a plurality of first side frame wires 21 and a plurality of second side frame wires 23. Each touch electrode 11 of the plurality of touch electrodes 10 is electrically connected to one of the first side frame wires 211 and one of the second side frame wires 231 to form a touch circuit L. The plurality of first side frame wires 21 and the plurality of second side frame wires 23 are respectively disposed on both sides of the display area AA. The flexible circuit board 30 is electrically connected to the plurality of frame wires 20. The sum of the resistance values ​​of the touch electrode 10, the first side frame wire 21 electrically connected to the touch electrode 10, and the second side frame wire 23 electrically connected to the touch electrode in each touch circuit L differs by less than 10%, so as to ensure that the transmission rate of the electrical signal of the touch electrode at each position is within a certain range.

[0083] It is understood that in this disclosure, directional descriptions such as "up," "down," "left," and "right" are relative rather than absolute. These directional terms may apply when the touch structure provided in this disclosure is positioned according to the posture and location shown in the accompanying drawings.

[0084] It should be understood that although terms such as “first” or “second” may be used in this disclosure to describe various elements (such as first side border wires and second side border wires), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0085] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0086] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

[0087] The components and devices described in this disclosure are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the accompanying drawings. As those skilled in the art will recognize, these components and devices can be connected, arranged, and configured in any manner.

[0088] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A touch structure, comprising a display area and a non-display area located around the periphery of the display area, characterized in that, The touch structure includes: Multiple touch electrodes are located in the display area; Multiple border wires are located in the non-display area. These border wires include multiple first side border wires and multiple second side border wires. Each of the multiple touch electrodes is electrically connected to one of the first side border wires and one of the second side border wires to form a touch circuit. The multiple first side border wires and the multiple second side border wires are respectively disposed on both sides of the display area. A flexible circuit board is located in the non-display area and is electrically connected to the multiple frame wires. In each of the aforementioned touch circuits, the sum of the resistance values ​​of the touch electrode, the first side frame wire electrically connected to the touch electrode, and the second side frame wire electrically connected to the touch electrode differs by less than 10%.

2. The touch structure according to claim 1, characterized in that, The plurality of first side frame wires are arranged sequentially on the first side of the plurality of touch electrodes, and the line width of the plurality of first side frame wires gradually increases as the distance from the wire length of the touch electrode in the touch circuit increases; Multiple second side frame wires are arranged sequentially on the second side of the multiple touch electrodes, and the line width of the multiple second side frame wires gradually increases with the increase of the wire length of the touch electrode in the touch circuit.

3. The touch structure according to claim 2, characterized in that, The line width ratio of any two adjacent first side border lines among the plurality of first side border lines is equal, and the line width ratio of any two adjacent second side border lines among the plurality of second side border lines is equal.

4. The touch structure according to claim 2, characterized in that, The ratio of the linewidths of two adjacent first side frame wires in the plurality of first side frame wires is greater than the ratio of the linewidths of two adjacent first side frame wires in the plurality of first side frame wires that are closer to the touch electrode in the touch circuit, and / or the ratio of the linewidths of two adjacent second side frame wires in the plurality of second side frame wires is greater than the ratio of the linewidths of two adjacent second side frame wires in the plurality of second side frame wires that are closer to the touch electrode in the touch circuit.

5. The touch structure according to claim 2, characterized in that, Each of the plurality of first side frame wires includes a plurality of first side wire segments. The plurality of first side wire segments are located from the flexible circuit board to the electrically connected touch electrode and are perpendicular to the touch electrode in the touch circuit. The line width of the first side wire segment farther away from the touch electrode in the touch circuit is greater than the line width of the first side wire segment closer to the touch electrode in the touch circuit. And / or each of the plurality of second side frame wires includes a plurality of second side wire segments, the plurality of second side wire segments being located from the flexible circuit board to the electrically connected touch electrode and perpendicular to the touch electrode in the touch circuit, wherein the line width of the second side wire segment farther from the touch electrode in the touch circuit is greater than the line width of the second side wire segment closer to the touch electrode in the touch circuit.

6. The touch structure according to claim 5, characterized in that, The line width ratio of two adjacent first-side conductor segments in the plurality of first-side conductor segments is equal, and / or the line width ratio of two adjacent second-side conductor segments in the plurality of second-side conductor segments is equal.

7. The touch structure according to claim 5, characterized in that, The ratio of the linewidths of two adjacent first-side conductor segments in the plurality of first-side conductor segments is greater than the ratio of the linewidths of two first-side conductor segments that are closer to the touch electrode in the touch circuit, and / or the ratio of the linewidths of two adjacent second-side conductor segments in the plurality of second-side conductor segments is greater than the ratio of the linewidths of two second-side conductor segments that are closer to the touch electrode in the touch circuit.

8. The touch structure according to claim 2, characterized in that, Each of the plurality of first side-frame wires includes a first side connecting wire, which is parallel to the touch electrode in its respective touch circuit and is used to connect the flexible circuit board and the first side wire segment. The first side wire segment is perpendicular to the touch electrode in its respective touch circuit. Each of the plurality of second side-frame wires includes a second side connecting wire, which is parallel to the touch electrode in its respective touch circuit and is used to connect the flexible circuit board and the second side wire segment. The second side wire segment is perpendicular to the touch electrode in its respective touch circuit. The line width of the first-side connecting wire gradually increases with the distance from the flexible circuit board, and / or the line width of the second-side connecting wire gradually increases with the distance from the flexible circuit board.

9. The touch structure according to any one of claims 1 to 8, characterized in that, The width of the first side border area formed by the multiple first side border lines at different positions differs by less than 2%, and the width of the second side border area formed by the multiple second side border lines at different positions differs by less than 2%.

10. A touch module, characterized in that, It includes a substrate and a touch structure as described in any one of claims 1 to 9.

11. An electronic device, characterized in that, Includes the touch module as described in claim 10.

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