Touch control structure, touch control module and electronic equipment with touch control module
By controlling the resistance design of the touch circuit, the problems of excessive resistance and unbalanced resistance in the narrow bezel design were solved, achieving balanced current distribution, improving the touch accuracy, responsiveness and operational stability of the device, extending the device's lifespan and reducing the risk of injury.
Patent Information
- Application Number
- CN202511063694.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-30
- Publication Date
- 2025-11-21
AI Technical Summary
In narrow bezel designs, excessive and unbalanced resistance in the bezel wires leads to reduced signal transmission rate, decreased sensitivity, and increased power consumption, affecting device performance and lifespan.
By controlling the resistance of the touch circuit to within 10% and using the line width and length design of multiple frame wires, the current distribution of each touch circuit is balanced, the potential difference is reduced, and the electrical signal transmission rate is kept consistent.
It achieves balanced current distribution, avoids local overheating, improves touch accuracy, responsiveness and operational stability, extends equipment life, reduces the risk of injury, and improves production safety and reliability.
Smart Images
Figure CN120994079A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of touch module, in particular, to a touch structure, a touch module and an electronic device with the same. BACKGROUND
[0002] With the improvement of people's living standards, people are increasingly pursuing narrow frame and "maximum screen-to-body ratio" of smart phones and tablet computers to improve visual sense and human-computer interaction experience.
[0003] In the narrow frame design, the wiring space of the frame area is significantly compressed, so that the frame wires of the frame area are becoming thinner and thinner, and the spacing between the frame wires is becoming smaller and smaller. However, the increasingly thin frame wires result in increasingly large resistance, and the large resistance seriously affects the transmission rate of electrical signals, resulting in further reduction of sensitivity. Moreover, the frame area often adopts a serpentine trace (see Figure 1 ), the larger L results in the larger R under the condition that the cross-sectional area S is unchanged, and the resistance of each frame wire is not the same, and the different resistance values will cause delay in electrical signal transmission and increase in power consumption, thereby affecting the performance and service life of the device. SUMMARY
[0004] Therefore, an embodiment of the present disclosure provides a touch structure, a touch module and an electronic device with the same, aiming to solve the problem that the narrow frame in the conventional touch structure causes excessively large resistance and resistance value mismatch, thereby affecting the sensitivity, power consumption, service life and the like.
[0005] In a first aspect, an embodiment of the present disclosure provides a touch structure including a display area and a non-display area located at the periphery of the display area. The touch structure includes a plurality of touch electrodes, a plurality of frame wires and a flexible circuit board. The plurality of touch electrodes is located in the display area. The plurality of frame wires is located in the non-display area, and the plurality of frame wires includes a plurality of first side frame wires and a plurality of second side frame wires. Each of the plurality of touch electrodes is electrically connected to one of the plurality of first side frame wires and one of the plurality of second side frame wires, respectively, to form a touch loop. The plurality of first side frame wires and the plurality of second side frame wires are arranged on both sides of the display area. The flexible circuit board is located in the non-display area and is electrically connected to the plurality of frame wires. 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 in each touch loop differs by less than 10%.
[0006] As a possible implementation, the first side frame wires are arranged in sequence on the first side of the touch electrodes, and the line width of the first side frame wires gradually increases with the increase of the length of the wire from the touch electrode in the touch loop. The second side frame wires are arranged in sequence on the second side of the touch electrodes, and the line width of the second side frame wires gradually increases with the increase of the length of the wire from the touch electrode in the touch loop.
[0007] As a possible implementation, the ratio of the line width of any two adjacent first side frame wires in the first side frame wires is equal, and the ratio of the line width of any two adjacent second side frame wires in the second side frame wires is equal.
[0008] As a possible implementation, the ratio of the line width of the two adjacent first side frame wires in the first side frame wires is greater than the ratio of the line width of the two adjacent first side frame wires in the first side frame wires that are closer to the touch electrode in the touch loop, and / or the ratio of the line width of the two adjacent second side frame wires in the second side frame wires is greater than the ratio of the line width of the two adjacent second side frame wires in the second side frame wires that are closer to the touch electrode in the touch loop.
[0009] As a possible implementation, each of the 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 perpendicular to the touch electrode in the touch loop, and the line width of the first side wire segment that is farther from the touch electrode in the touch loop is greater than the line width of the first side wire segment that is closer to the touch electrode in the touch loop. And / or each of the second side frame wires includes a plurality of second side wire segments, the plurality of second side wire segments are located from the flexible circuit board to the electrically connected touch electrode and perpendicular to the touch electrode in the touch loop, and the line width of the second side wire segment that is farther from the touch electrode in the touch loop is greater than the line width of the second side wire segment that is closer to the touch electrode in the touch loop.
[0010] As a possible implementation, the ratio of the line width of the two adjacent first side wire segments in the plurality of first side wire segments is equal, and / or the ratio of the line width of the two adjacent second side wire segments in the plurality of second side wire segments is equal.
[0011] As a possible implementation, a ratio of line widths of two adjacent first side conductor segments in the plurality of first side conductor segments is greater than a ratio of line widths of two first side conductor segments closer to the touch control electrode in the touch control loop, and / or a ratio of line widths of two adjacent second side conductor segments in the plurality of second side conductor segments is greater than a ratio of line widths of two second side conductor segments closer to the touch control electrode in the touch control loop.
[0012] As a possible implementation, each of the plurality of first side bezel conductor lines comprises a first side connecting conductor line parallel to the touch control electrode in the touch control loop for connecting the flexible circuit board and a first side conductor segment perpendicular to the touch control electrode in the touch control loop, and each of the plurality of second side bezel conductor lines comprises a second side connecting conductor line parallel to the touch control electrode in the touch control loop for connecting the flexible circuit board and a second side conductor segment perpendicular to the touch control electrode in the touch control loop. The line width of the first side connecting conductor line gradually increases with the increase of the distance from the flexible circuit board, and / or the line width of the second side connecting conductor line gradually increases with the increase of the distance from the flexible circuit board.
[0013] As a possible implementation, the widths of different positions of the first side bezel region formed by the plurality of first side bezel conductor lines differ by within 2%, and the widths of different positions of the second side bezel region formed by the plurality of second side bezel conductor lines differ by within 2%.
[0014] In a second aspect, an embodiment of the present disclosure provides a touch control module, comprising a substrate and any of the above touch control structures.
[0015] In a third aspect, an embodiment of the present disclosure provides an electronic device comprising the above touch control module.
[0016] By controlling the resistance of each touch control loop L to differ by within 10%, the distribution of current of the entire touch control structure is more balanced, which helps to avoid overheating caused by excessively high current density in local areas, thereby helping to prolong the service life of the electronic device. Moreover, since the distribution of electric field is more balanced, the transmission rate of the electric signal of the touch control electrode at each position is within a certain range, which helps to improve the touch control accuracy, reaction sensitivity and operation stability of different touch points in use, thereby improving the use performance and experience of the electronic device. In addition, this design also helps to reduce the potential difference between the touch control loops, so that the potential difference between the touch control loops is close to zero, thereby reducing the risk of injury and improving the safety and reliability of the electronic device in use and production, which helps to further improve the production yield. BRIEF DESCRIPTION OF DRAWINGS
[0017] It should be understood that the following drawings are not necessarily to scale and that the illustrations are merely schematic and the embodiments can have different equivalents. It should also be understood that the
[0018] It should be understood that like terms or phrases in the specification and claims should be given the same interpretation.
[0019] It should be understood that the drawings are only schematic and that the dimensions and proportions of the various elements in the drawings are not necessarily to scale.
[0020] Figure 1 Structure diagram of touch structure in related art
[0021] Figure 2 Structure diagram of touch structure provided by an embodiment of the present disclosure.
[0022] Figure 3 Structure diagram of touch structure provided by another embodiment of the present disclosure.
[0023] Figure 4 Structure diagram of touch structure in Figure 3
[0024] Structure diagram of touch structure in Figure 5a Figure 3 Structure diagram of one touch loop located at the edge of the touch structure in
[0025] Figure 5b Structure diagram of one touch loop located in the middle of the non-display area in Figure 3
[0026] Structure diagram of one touch loop located at the edge of the display area in Figure 5c Figure 3 Structure diagram of one touch loop located at the edge of the display area in
[0027] Figure 6a Structure diagram of another layer of touch structure Figure 3
[0028] Structure diagram of another layer of touch structure Figure 6b Figure 6a Partial structure diagram of one touch loop located at the edge of the touch structure in
[0029] Figure 6c Partial structure diagram of one touch loop located in the middle of the non-display area in Figure 6a
[0030] Partial structure diagram of one touch loop located in the middle of the non-display area in Figure 6d Figure 6a Partial structure diagram of one touch loop located at the edge of the display area in
[0031] Figure 7 Structure diagram of touch module provided by an embodiment of the present disclosure. DETAILED DESCRIPTION
[0032] Embodiments of the present disclosure will be described herein below, by way of example only, with reference to the accompanying drawings. It should be understood that implementations of the present disclosure can vary, and that the present disclosure is not to be construed as being limited to the embodiments set forth herein, which are presented for the sole purpose of providing an enabling teaching.
[0033] The touch structure 100 generally comprises a display area AA region and a non-display area BM region located at the periphery of the display area AA region. In a narrow frame design, the frame region located in the non-display area BM region is gradually compressed, so that the frame wire located in the frame region becomes thinner and thinner. According to the resistance formula R = p * (L / S), under the condition that L is constant, the reduction of the cross-sectional area S will directly lead to the increase of the resistance R.
[0034] In view of this, with reference to Figures 1 to 7 , an embodiment of the present disclosure provides a touch structure 100. Compared with the traditional touch structure, by controlling the resistance values of different touch circuits within a certain range, it is helpful to ensure that the transmission rates of electrical signals between different touch circuits are within a certain range, so as to make the distribution of current of the entire touch structure more balanced, and to help avoid overheating caused by excessive current density in local areas, thereby helping to prolong the service life of the electronic device. Moreover, since the distribution of electric field is more balanced, it helps to ensure that the transmission rate of the electrical signal of the touch electrode at each position is within a certain range, thereby helping to improve the touch accuracy, reaction sensitivity and operation stability of different touch points in use, to improve the use performance and experience of the electronic device. In addition, this design also helps to reduce the potential difference between the touch circuits, so that the potential difference between the touch circuits is close to zero, thereby reducing the risk of injury and improving the safety and reliability of the electronic device in use and production, and helping to further improve the production yield.
[0035] For the convenience of understanding, the overall structure of the touch structure 100 will be described first. It should be understood that the overall structure of the touch structure 100 should not be limited to the following description. For example, one or more elements introduced below can be omitted or replaced, and the layout relationship between them can be replaced with each other.
[0036] It should be noted that in the present disclosure, the width direction can refer to the direction orthogonal to the length direction. In the drawings of the present disclosure, the arrow X+ and the arrow X- are opposite directions, and the arrow X+ can be used to indicate the right side of the width direction, and the arrow X- can be used to indicate the left side of the width direction. The arrow Y+ and the arrow Y- are opposite directions, and the arrow Y+ can be used to indicate one side of the length direction, and the arrow Y- can be used to indicate the other side of the length direction.
[0037] With reference to Figure 2 and Figure 3In an embodiment of the present disclosure, a touch structure 100 is provided, which includes a plurality of touch electrodes 10, a plurality of border wires 20 and a flexible circuit board 30. The touch electrodes 10 are located in a display area AA, and the plurality of border wires 20 and the flexible circuit board 30 are located in a non-display area BM. The touch electrodes 10 can include a plurality of horizontal touch electrodes 10a, which can be arranged along the length direction or the width direction. The spacing between the plurality of horizontal touch electrodes 10a can be flexibly designed according to factors such as sensitivity, light transmittance, anti-interference, etc. For example, the spacing can be 1-5 mm, 4-6 mm, 6-10 mm, etc., which is not limited here. The touch electrodes 10 are generally made of metal materials, such as nano silver wires, indium tin oxide (ITO), etc., which are not limited here. The resistance of the touch electrodes 10 arranged along the length direction is generally the same, and the difference is generally less than 2%.
[0038] With reference to the foregoing Figure 2 , Figure 3 , Figures 5a to 5c The plurality of border wires 20 can include a plurality of first side border wires 21 and a plurality of second side border wires 23. Each of the plurality of touch electrodes 10 is electrically connected to one of the plurality of first side border wires 21 and one of the plurality of second side border wires 23 to form a touch loop L. The plurality of first side border wires 21 and the plurality of second side border wires 23 are arranged on both sides of the display area AA. The flexible circuit board 30 is electrically connected to the plurality of border wires 20 for transmission of electrical signals, so that the sum of the resistances of the touch electrodes 10, the first side border wires 21 electrically connected to the touch electrodes 10, and the second side border wires 23 electrically connected to the touch electrodes in each touch loop L differs by less than 10%.
[0039] By controlling the resistance of each touch loop L to differ by less than 10%, the distribution of current in the entire touch structure is more balanced, which helps to avoid overheating caused by excessive current density in local areas, thereby helping to prolong the service life of the electronic device. Moreover, since the distribution of electric field is more balanced, it helps to ensure that the transmission rate of electrical signals of the touch electrodes at each position is within a certain range, thereby helping to improve the touch accuracy, reaction sensitivity and operation stability of different touch points in use, to improve the use performance and experience of the electronic device. In addition, this design also helps to reduce the potential difference between the touch loops, so that the potential difference between the touch loops is close to zero, thereby reducing the risk of injury and improving the safety and reliability of the electronic device in use and production, which helps to further improve the production yield.
[0040] It can be understood that two ends of each transverse touch electrode 10 are electrically connected with a first side frame wire 211 and a second side frame wire 231 respectively, so that the flexible circuit board 30 receives the electrical signal of the corresponding touch loop L. The non-display area BM area can include a first side frame area BM1, a second side frame area BM2 and a third frame area BM3, the plurality of first side frame wires 21 can be located in the first side frame area BM1 and the third frame area BM3, the plurality of second side frame wires 23 can be located in the second side frame area BM2 and the third frame area BM3, and the flexible circuit board 30 can be located in the third frame area BM3.
[0041] Reference Figure 3 The width W1 of the first side frame area BM1 formed by the plurality of first side frame wires at different positions is within 2% of each other, and the width W2 of the second side frame area BM2 formed by the plurality of second side frame wires at different positions is within 2% of each other. Specifically, in the first side frame area BM1, the widths of the plurality of different first side frame wires formed along the width X+ direction are substantially uniform, i.e. W11=W12=W13=W14=W15. Similarly, in the second side frame area BM2, the widths of the plurality of different second side frame wires formed along the width X+ direction are substantially uniform, i.e. W21=W22=W23=W24=W25. Such design is conducive to making full use of the first side frame area and the second side frame area, and ensuring that different touch loops have a relatively small resistance value, thereby helping to ensure that the transmission rate of the electrical signal of the touch electrode at each position is within a certain range.
[0042] Reference Figure 2 And Figure 3 The plurality of first side frame wires 21 can be sequentially arranged on the first side (i.e. the left side) of the plurality of touch electrodes 10, and the line width D1 of the plurality of first side frame wires 21 gradually widens with the increase of the wire length of the touch electrode 10 in the corresponding touch loop L. The plurality of second side frame wires 23 can be sequentially arranged on the second side (i.e. the right side) of the plurality of touch electrodes 10, and the line width D2 of the plurality of second side frame wires 23 gradually widens with the increase of the wire length of the touch electrode 10 in the corresponding touch loop L.
[0043] It needs to be understood that the sequential arrangement can be understood as sequentially arranged from close to far relative to the distance of the touch electrode 10. For example, the first side and the second side of each touch electrode are arranged with a plurality of first side frame conductive lines 21 and a plurality of second side frame conductive lines 23 along the width X+ direction. The closer to the display area AA, the narrower the line width of the frame conductive line, and the closer to the edge of the non-display area BM, the wider the line width of the frame conductive line. Specifically, the line width D2 of the plurality of second side frame conductive lines 23 located in the second frame area BM2 gradually increases along the width X+ direction from the length position where the touch electrode is located. The line width D1 of the plurality of first side frame conductive lines 21 located in the first frame area BM1 gradually increases along the width X- direction from the length position where the touch electrode 10 is located.
[0044] In this way, the overall structure of the plurality of frame conductive lines 10 presents that the closer to the display area AA, the smaller the line width of the frame conductive line and the shorter the length of the frame conductive line, and the closer to the edge of the non-display area BM, the larger the line width of the frame conductive line and the longer the length of the frame conductive line. In this way, according to the resistance formula R=ρ*(L / S), it is convenient to keep the resistance of each frame conductive line consistent, thereby facilitating the sum of the resistance values of the touch electrode 10, the first side frame conductive line 21 electrically connected to the touch electrode 10, and the second side frame conductive line 23 electrically connected to the touch electrode in each touch loop L to be within 10%, thereby ensuring 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 of use.
[0045] It needs to be noted that according to the resistance formula R=ρ*(L / S), while increasing the line width and the length of the frame conductive line, the resistance value of the frame conductive line remains unchanged as a whole, and therefore the length and the line width of the frame conductive line can be adjusted according to different positions to ensure that the resistance remains unchanged.
[0046] Reference Figure 2 The ratio of the line width of any two adjacent frame conductive lines in the plurality of first side frame conductive lines 21 is equal, and the ratio of the line width of any two adjacent frame conductive lines in the plurality of second side frame conductive lines 23 is equal. That is, the line width D1 of the plurality of first side frame conductive lines 21 located in the first frame area BM1 gradually increases along the width X- direction, and the increasing rate remains consistent. Specifically, the ratio of the line width of the first side frame conductive line 211 and the line width of the first side frame conductive line 212 is equal to the ratio of the line width of the first side frame conductive line 212 and the line width of the first side frame conductive line 213, and the ratio of the line width of the first side frame conductive line 212 and the line width of the first side frame conductive line 213 is equal to the ratio of the line width of the first side frame conductive line 213 and the line width of the first side frame conductive line 214.
[0047] Similarly, the line width D2 of the plurality of second side bezel wires 23 located in the second bezel region BM2 gradually increases along the width direction, and the increasing rate remains consistent. Specifically, the ratio of the line width of the second side bezel wire 231 to the line width of the second side bezel wire 232 is equal to the ratio of the line width of the second side bezel wire 232 to the line width of the second side bezel wire 233, and the ratio of the line width of the second side bezel wire 232 to the line width of the second side bezel wire 233 is equal to the ratio of the line width of the second side bezel wire 233 to the line width of the second side bezel wire 234. The plurality of first side bezel wires with uniform line width variation and the plurality of second side bezel wires with uniform line width variation are beneficial to reduce the processing difficulty, thereby facilitating the improvement of the preparation efficiency and the reduction of the processing cost.
[0048] It can be understood that the line width of the first side bezel wire 211 in the plurality of first side bezel wires 21 uniformly increases along the width direction opposite to X+, and the line width of each adjacent second side bezel wire 231 in the plurality of second side bezel wires 23 uniformly increases along the width direction X+. In addition, the size of the increasing rate of the line width of the bezel wire can be flexibly designed according to the size of the non-display region BM region in the display device of different sizes, for example, the increasing rate of the line width of the bezel wire can be less than 20, and greater than 1.1.
[0049] In an embodiment, the plurality of first side bezel wires 21 and the plurality of second side bezel wires 23 are symmetrically arranged, and the line width D1 of the plurality of first side bezel wires 21 and the line width D2 of the plurality of second side bezel wires 23 are gradually increased at a ratio of 1:1.5.
[0050] In an embodiment, the plurality of first side bezel wires 21 and the plurality of second side bezel wires 23 are symmetrically arranged, and the line width D1 of the plurality of first side bezel wires 21 and the line width D2 of the plurality of second side bezel wires 23 are gradually increased at a ratio of 1:2.
[0051] In an embodiment, only the line width ratio of any two adjacent bezel wires in the plurality of first side bezel wires 21 is equal, and the line width ratio of any two adjacent bezel wires in the plurality of second side bezel wires 23 is not equal.
[0052] In another embodiment, only the line width ratio of any two adjacent bezel wires in the plurality of second side bezel wires 23 is equal, and the line width ratio of any two adjacent bezel wires in the plurality of first side bezel wires 21 is not equal.
[0053] Reference Figure 3 and Figure 4, the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 is greater than the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 which is closer to the touch control electrode 10 in the touch control loop L, and the ratio of the line width D2 of the two adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 is greater than the ratio of the line width D2 of the two adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 which is closer to the touch control electrode 10 in the touch control loop L.
[0054] It can be understood that the line width D1 of the adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 is wider and wider along the direction of the width X-, and the speed of the widening is gradually increased. The line width D3 of the adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 is wider and wider along the direction of the width X+, and the speed of the widening is gradually increased. In this way, it is beneficial to further reduce the difference of the sum of the resistance values of the touch control electrode 10, the first side frame conductive line 21 electrically connected to the touch control electrode, and the second side frame conductive line 23 electrically connected to the touch control electrode in each touch control loop L, and it is beneficial to further improve the sensitivity and service life. In addition, the size of the increasing rate of the line width of the frame conductive line can be flexibly designed according to the size of the non-display area BM area in the display device of different sizes, for example, the increasing rate of the line width of the frame conductive line can be less than 40, greater than 1.1.
[0055] In an embodiment, the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 is greater than the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 which is closer to the touch control electrode 10 in the touch control loop L, and the ratio of the line width D2 of the two adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 is equal to or less than the ratio of the line width D2 of the two adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 which is closer to the touch control electrode 10 in the touch control loop L.
[0056] In another embodiment, the ratio of the line width D2 of the two adjacent first side frame conductive lines 231 in the plurality of second side frame conductive lines 23 is greater than the ratio of the line width D2 of the two adjacent second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 which is closer to the touch control electrode 10 in the touch control loop L, and the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 is equal to or less than the ratio of the line width D1 of the two adjacent first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 which is closer to the touch control electrode 10 in the touch control loop L.
[0057] Reference Figures 2 to 5cFor example, for each first side bezel conductive line 211, along the length Y+ direction, the first side bezel conductive line 211 can include a plurality of first side conductive line segments 211a, the line widths of the plurality of first side conductive line segments 211a are D31, D32, D33, D34 and D35 in sequence (refer to FIG. 6A), and the line widths of the plurality of first side conductive line segments 211a are D31<D32<D33<D34<D35 in size, so that the first side bezel conductive line can make full use of the first bezel area. Similarly, for each second side bezel conductive line 231, along the length Y+ direction, the second side bezel conductive line 231 includes a plurality of second side conductive line segments 231a, the line widths of the plurality of second side conductive line segments 231a are D41, D42, D43, D44 and D45 in sequence, and the line widths of the plurality of second side conductive line segments 211a are D41<D42<D43<D44<D45 in size, so that the second side bezel conductive line can make full use of the second bezel area.
[0058] For example, for each first side bezel conductive line 211, along the length Y+ direction, the first side bezel conductive line 211 can include a plurality of first side conductive line segments 211a, the line widths of the plurality of first side conductive line segments 211a are D31, D32, D33, D34 and D35 in sequence (refer to Figure 5a For example, for each first side bezel conductive line 211, along the length Y+ direction, the first side bezel conductive line 211 can include a plurality of first side conductive line segments 211a, the line widths of the plurality of first side conductive line segments 211a are D31, D32, D33, D34 and D35 in sequence (refer to
[0059] It can be understood that each of the first side frame conductive lines 211 can include a plurality of first side conductive line segments 211a with gradually increasing line width D3 along the length direction, and the line width of the first side conductive line segment 211a farthest from the flexible circuit board 30 can be the maximum width of the first frame area. Similarly, each of the second side frame conductive lines 231 can include a plurality of second side conductive line segments 231a with gradually increasing line width D4 along the length direction, and the line width of the second side conductive line segment 231a farthest from the flexible circuit board 30 can be the maximum width of the second frame area. In this way, the outermost frame conductive line can make full use of the frame area of the non-display area to further reduce the resistance of the outermost frame conductive line, thereby facilitating to ensure that the resistances of different touch loops differ within 10%.
[0060] In an example, each of the first side frame conductive lines 211 in the plurality of first side frame conductive lines 21 can include a plurality of first side conductive line segments 211a, the plurality of first side conductive line segments 211a are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and perpendicular to the touch electrode 10 in the touch loop L, and the line width D3 of the first side conductive line segment 211a farther from the touch electrode 10 in the touch loop L is greater than the line width D1 of the first side conductive line segment 211a closer to the touch electrode 10 in the touch loop L. The plurality of second side frame conductive lines 23 are not specifically limited.
[0061] In another example, each of the second side frame conductive lines 231 in the plurality of second side frame conductive lines 23 can include a plurality of second side conductive line segments 231a, the plurality of second side conductive line segments 231a are located from the flexible circuit board 30 to the electrically connected touch electrode 10 and perpendicular to the touch electrode 10 in the touch loop L, and the line width D4 of the second side conductive line segment 231a farther from the touch electrode 10 in the touch loop L is greater than the line width D2 of the second side conductive line segment 231a closer to the touch electrode 10 in the touch loop L. The plurality of first side frame conductive lines 21 are not specifically limited.
[0062] Reference Figure 5a The ratio of the line widths D3 of two adjacent first side conductive line segments in the plurality of first side conductive line segments 211a is equal, and the ratio of the line widths D4 of two adjacent second side conductive line segments in the plurality of second side conductive line segments 231a is equal.
[0063] That is, the line width of the plurality of first side conductor segments 211a in each first side frame conductor 211 becomes wider along the length direction, and the speed of the widening is kept consistent, that is, the change relationship of the line width of the plurality of first side conductor segments 211a is: D35:D34=D34:D33=D33:D32=D32:D31. Similarly, the line width of the plurality of second side conductor segments 231a in each second side frame conductor 231 becomes wider along the length direction, and the speed of the widening is kept consistent, that is, the change relationship of the line width of the plurality of second side conductor segments 231a is:
[0064] D45:D44=D44:D43=D43:D42=D42:D41.
[0065] The uniform change of the line width of the plurality of first side conductor segments and the uniform change of the line width of the plurality of second side conductor segments are beneficial to reduce the processing difficulty, thereby being beneficial to improve the preparation efficiency and reduce the processing cost.
[0066] In an example, the ratio of the line width D3 of two adjacent first side conductor segments in the plurality of first side conductor segments 211a is equal, and the ratio of the line width D4 of two adjacent second side conductor segments in the plurality of second side conductor segments 231a is not equal.
[0067] In another example, the ratio of the line width D3 of two adjacent second side conductor segments in the plurality of second side conductor segments 231a is equal, and the ratio of the line width D4 of two adjacent first side conductor segments in the plurality of first side conductor segments 211a is not equal.
[0068] In an example, the ratio of the line width of two adjacent first side conductor segments in the plurality of first side conductor segments 211a is greater than the ratio of the line width of two first side conductor segments closer to a touch electrode in the touch control loop, and the ratio of the line width of two adjacent second side conductor segments in the plurality of second side conductor segments 231a is greater than the ratio of the line width of two second side conductor segments closer to a touch electrode in the touch control loop.
[0069] It can be understood that the line width of the first side conductor segment in the plurality of first side conductor segments 211a becomes wider along the length direction, and the speed of the widening gradually increases, and the line width of the second side conductor segment in the plurality of second side conductor segments 231a becomes wider along the length direction, and the speed of the widening gradually increases. In this way, it is beneficial to further reduce the difference between the resistance values of the touch electrode, the first side bezel conductor electrically connected to the touch electrode, and the second side bezel conductor electrically connected to the touch electrode in each touch loop, under the premise of fully utilizing the bezel area, thereby further improving the sensitivity and service life of use. In addition, the size of the increasing rate of the line width of the first side conductor segment and the line width of the second side conductor segment can be flexibly designed according to the size of the non-display area BM area in display devices of different sizes.
[0070] In another example, the ratio of the line width of the two adjacent first side conductor segments in the plurality of first side conductor segments is greater than the ratio of the line width of the two first side conductor segments closer to the touch electrode in the touch loop where the two first side conductor segments are located, and the ratio of the line width of the two adjacent second side conductor segments in the plurality of second side conductor segments is less than or equal to the ratio of the line width of the two second side conductor segments closer to the touch electrode in the touch loop where the two second side conductor segments are located.
[0071] In another example, the ratio of the line width of the two adjacent second side conductor segments in the plurality of second side conductor segments is greater than the ratio of the line width of the two second side conductor segments closer to the touch electrode in the touch loop where the two second side conductor segments are located, and the ratio of the line width of the two adjacent first side conductor segments in the plurality of first side conductor segments is less than or equal to the ratio of the line width of the two first side conductor segments closer to the touch electrode in the touch loop where the two first side conductor segments are located.
[0072] Reference Figures 5a to 6d Each of the plurality of first side bezel conductors 21 can include a first side connecting conductor 2111 parallel to the touch electrode 10 in the touch loop L, for connecting the flexible circuit board 30 and the first side conductor segment 211a perpendicular to the touch electrode 10 in the touch loop L, and each of the plurality of second side bezel conductors 23 can include a second side connecting conductor 2311 parallel to the touch electrode 10 in the touch loop L, for connecting the flexible circuit board 30 and the second side conductor segment 231a perpendicular to the touch electrode 10 in the touch loop L. The line width D11 of the first side connecting conductor 2111 gradually increases with the increase of the distance from the flexible circuit board 30, and the line width of the second side connecting conductor 2311 gradually increases with the increase of the distance from the flexible circuit board 30.
[0073] It is to be noted that the rate of increase of the line width D11 of the first side connecting wire 2111 in the direction opposite to the width X+ can remain unchanged, or can increase or decrease. Similarly, the rate of increase of the line width D21 of the second side connecting wire 2311 in the direction of the width X+ can remain unchanged, or can increase or decrease.
[0074] In an example, the line width D11 of the first side connecting wire 2111 gradually increases with the increase of the distance from the flexible circuit board 30, and the line width of the second side connecting wire 2311 is not specifically limited.
[0075] In another example, the line width of the second side connecting wire 2311 gradually increases with the increase of the distance from the flexible circuit board, and the line width of the first side connecting wire 2111 is not specifically limited.
[0076] In the following, the resistance of different frame wires is calculated by taking the symmetry of the first side frame wire and the second side frame wire as an example.
[0077] Referring to Figures 2 to 6d , the width W1 of the first side frame area BM1 formed by the plurality of first side frame wires at different positions is within 2% of each other, and the width W2 of the second side frame area BM2 formed by the plurality of second side frame wires at different positions is within 2% of each other. The plurality of first side frame wires 21 can be arranged in sequence on the first side (i.e. the left side) of the plurality of touch electrodes 10, and the line width D1 of the plurality of first side frame wires 21 gradually increases with the increase of the length of the wire from the touch electrode 10 in the touch loop L. Referring to Figures 5a to 5c , the line widths of the wires closest to the flexible circuit board at the lowermost end are 1.43mm, 0.56mm and 0.31mm in turn. Each of the plurality of first side frame wires 211 in the plurality of first side frame wires 21 can include a plurality of first side wire segments 211a, the plurality of first side wire segments 211a being located from the flexible circuit board 30 to the touch electrode 10 to which it is electrically connected and being perpendicular to the touch electrode 10 in the touch loop L, the line width D3 of the first side wire segment 211a farther away from the touch electrode 10 in the touch loop L being greater than the line width D3 of the first side wire segment 211a closer to the touch electrode 10 in the touch loop L, and each of the plurality of second side frame wires 231 in the plurality of second side frame wires 23 can include a plurality of second side wire segments 231a, the plurality of second side wire segments 231a being located from the flexible circuit board 30 to the touch electrode 10 to which it is electrically connected and being perpendicular to the touch electrode 10 in the touch loop L, the line width D4 of the second side wire segment 231a farther away from the touch electrode 10 in the touch loop L being greater than the line width D4 of the second side wire segment 231a closer to the touch electrode 10 in the touch loop L. Referring to Figures 5a to 5c, along the length direction Y+ direction, the line width of the plurality of first side lead segments 211a is: D31=1.43mm, D32=1.72mm, D33=2.35mm, D34=2.8mm, D35=5.11mm in turn. D351=1.12mm, D352=0.57mm, D353=0.56mm.
[0078] D3511=0.31mm.
[0079] Reference Figures 5a to 5c , through calculation, the resistance of the plurality of first side lead segments 211a is: R(35)=0.102Ω, R(34)=0.131Ω, R(33)=0.186Ω, R(32)=0.341Ω, R(31)=0.878Ω in turn, the resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 5.187Ω and 0.966Ω respectively, R(total1)=16.08
[0080] Ω. R(351)=0.446Ω, R(352)=0.7Ω, R(353)=1.52Ω. The resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 3.67Ω and 1.46Ω respectively, R(total2) 16.08Ω. R(3511)=1.85Ω, the resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 4.09Ω and 0.878Ω respectively, R(total3)=16.08Ω.
[0081] Reference Figure 6a and 6b , for the first side connecting lead 2111, along the width X+ direction, R(D11) is: 0.114Ω, 0.176Ω, 0.267Ω, 0.433Ω and 1.768Ω in turn, the resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 3.57Ω. R(total4)=13.16Ω. Reference Figure 6a and 6c , along the width X+ direction, R(D11) is: 0.41Ω, 1.7Ωh and 0.98Ω in turn, the resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 4.23Ω. R(total5)=13.136Ω. Reference Figure 6a and 6d , along the width X+ direction, R(D11)=1.59Ω, the resistance of the part of the first side connecting lead 2111 connecting the flexible circuit board is 4.72Ω. R(total6)=13.13Ω.
[0082] In summary, Figures 5a to 5c It can be known from the above that the resistance of the first side frame lead at different positions is equal. Figures 6a to 6dIt can be seen that the resistance of the first side connecting wires at different positions differs by 0.03Ω. Therefore, the resistance of different touch circuits differs by 10% or less, so that the distribution of current in the entire touch structure is more balanced, which helps to avoid overheating caused by excessively high current density in local areas, thereby helping to prolong the service life of the electronic device.
[0083] With reference to Figure 2 and Figure 7 An embodiment of the present disclosure further discloses a touch module 200, which comprises a substrate and a touch structure 100. The touch structure 100 can comprise a plurality of touch electrodes 10, a plurality of frame wires 20 and a flexible circuit board 30. The plurality of touch electrodes 10 can be located in a display area AA. The plurality of frame wires 20 can comprise a plurality of first side frame wires 21 and a plurality of second side frame wires 23. Each of the plurality of touch electrodes 11 is electrically connected to a first side frame wire 211 of the plurality of first side frame wires 21 and a second side frame wire 231 of the plurality of second side frame wires 23, respectively, to form a touch loop L. The plurality of first side frame wires 21 and the plurality of second side frame wires 23 are arranged on both sides of the display area AA, respectively. The flexible circuit board 30 is electrically connected to the plurality of frame wires 20. The sum of the resistances 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 loop L differs by 10% or less.
[0084] By controlling the resistance of each touch loop L to differ by 10% or less, the distribution of current in the entire touch structure is more balanced, which helps to avoid overheating caused by excessively high current density in local areas, thereby helping to prolong the service life of the electronic device. Moreover, since the distribution of electric field is more balanced, the transmission rate of the electric signal of the touch electrode at each position is ensured to be within a certain range, thereby helping to improve the touch accuracy, reaction sensitivity and operation stability of different touch points in use, to improve the use performance and experience of the electronic device. In addition, this design also helps to reduce the potential difference between the touch loops, so that the potential difference between the touch loops is close to zero, thereby reducing the risk of injury and improving the safety and reliability of the electronic device in use and production, which helps to further improve the production yield.
[0085] An embodiment of the present disclosure further discloses an electronic device comprising the touch module 200 having the above structure. The touch module 200 comprises the substrate and the touch structure 100, and the touch structure 100 can comprise the plurality of touch electrodes 10, the plurality of border wires 20 and the flexible circuit board 30. The plurality of touch electrodes 10 can be located in the display area AA. The plurality of border wires 20 can comprise the plurality of first side border wires 21 and the plurality of second side border wires 23, each of the plurality of touch electrodes 11 is electrically connected with one of the plurality of first side border wires 211 and one of the plurality of second side border wires 231 respectively to form the touch loop L, and the plurality of first side border wires 21 and the plurality of second side border wires 23 are arranged on two sides of the display area AA respectively. The flexible circuit board 30 is electrically connected with the plurality of border wires 20. The sum of the resistance values of the touch electrode 10, the first side border wire 21 electrically connected with the touch electrode 10 and the second side border wire 23 electrically connected with the touch electrode in each touch loop L is within 10% to ensure that the transmission rate of the electrical signal of the touch electrode at each position is within a certain range.
[0086] It can be understood that in the present disclosure, the orientation descriptions such as "upper", "lower", "left", "right" and the like are relative rather than absolute. These orientation words can be applicable when the touch structure provided by the present disclosure is placed in the posture and position shown in the drawings.
[0087] It should be understood that although the terms "first" or "second" and the like can be used in the present disclosure to describe various elements (such as the first side border wire and the second side border wire), these elements are not provided with these terms, and these terms are only used to distinguish one element from another.
[0088] The above describes the basic principles of the present disclosure in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the present disclosure are only examples and cannot be considered as the must-have of each embodiment of the present disclosure. In addition, the above specific details are only for the purpose of example and understanding, and the above details do not limit the present disclosure to the must-use specific details.
[0089] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although the above has discussed a plurality of example aspects and embodiments, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations.
[0090] The components, devices, and arrangements involved in the present disclosure are merely illustrative examples and are not intended to require or imply that the components, devices, and arrangements must be connected, arranged, configured in the manner shown in the drawings. These components, devices, and arrangements can be connected, arranged, configured in any manner as would be recognized by one skilled in the art.
[0091] The above merely provides the specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection 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 conductors includes a plurality of second side conductor segments, the plurality of second side conductor 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 conductor segment farther from the touch electrode in the touch circuit is greater than the line width of the second side conductor 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.