Touch panel and display device

Abstract

The application discloses a touch panel and a display device. The touch panel comprises a first touch electrode, a second touch electrode and a connecting unit. The first touch electrode comprises a plurality of first touch units arranged along a first direction and electrically connected with each other. The second touch electrode comprises a plurality of second touch units arranged along a second direction. The first direction intersects with the second direction. The second touch electrode is arranged in the same layer as the first touch electrode. The connecting unit connects two adjacent second touch units. The connecting unit is arranged in a different layer from the second touch electrode. The connecting unit comprises a bridge point connecting line and a bridge point auxiliary line. The two adjacent second touch units are connected with the bridge point connecting line respectively. The bridge point auxiliary line is arranged around the bridge point connecting line to disperse the stress on the bridge point connecting line when the touch panel is bent or curled, to protect the bridge point connecting line, to improve the reliability of the bridge point connecting line, to reduce the risk of failure of the bridge point connecting line, and to avoid touch failure of the bent or curled part of the touch panel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a touch panel and a display device. BACKGROUND

[0002] With the development of display devices, folding or rolling can be realized. However, the folding or rolling part of the touch screen of the existing display device has stress concentration, which is prone to cracks, resulting in touch failure. SUMMARY

[0003] The present application provides a touch panel and a display device to avoid touch failure of the folding or rolling part of the touch screen.

[0004] To solve the above technical problems, the first technical solution provided by the present application is to provide a touch panel, comprising a first touch electrode, a second touch electrode and a connecting unit; the first touch electrode comprises a plurality of first touch units arranged along a first direction and electrically connected to each other; the second touch electrode comprises a plurality of second touch units arranged along a second direction; the first direction intersects the second direction; the second touch electrode is arranged in the same layer as the first touch electrode; the connecting unit connects two adjacent second touch units; the connecting unit is arranged in a different layer from the second touch electrode; wherein the connecting unit comprises a bridge point connection line and a bridge point auxiliary line, the two adjacent second touch units are respectively connected to the bridge point connection line, and the bridge point auxiliary line is arranged around the bridge point connection line.

[0005] In an embodiment, the bridge point auxiliary line is arranged apart from the bridge point connection line, and the bridge point auxiliary line is not electrically connected to the second touch unit.

[0006] In an embodiment, the bridge point auxiliary line is arranged around the bridge point connection line to form a ring structure.

[0007] Preferably, the ring structure is a central symmetric figure.

[0008] In an embodiment, the ring structure comprises at least one top corner.

[0009] Alternatively, the bridge point auxiliary line further comprises a reinforcing line, the ring structure comprises at least one top corner, and the two ends of the reinforcing line are respectively connected to two edges corresponding to the top corner.

[0010] Alternatively, the ring structure comprises at least one top corner, and the top corner is bent towards the inside of the ring structure.

[0011] Preferably, the shape of the first touch unit and the second touch unit is a rhombus, and the ring structure is a rhombus.

[0012] In an embodiment, the bridge connection line comprises a first sub-connection line and a second sub-connection line, one end of the first sub-connection line is connected to one of the second touch electrodes, the other end of the first sub-connection line is connected to one end of the second sub-connection line, the other end of the second sub-connection line is connected to another of the second touch electrodes; an included angle is formed between the first sub-connection line and the second sub-connection line, the included angle is greater than zero and less than 180°;

[0013] Preferably, a rounded corner is formed at the connection between the first sub-connection line and the second sub-connection line;

[0014] More preferably, the radius corresponding to the rounded corner is 5 μm-15 μm.

[0015] In an embodiment, the connection unit comprises two bridge connection lines, the two bridge connection lines are symmetrically arranged along a straight line passing through the center of the connection unit;

[0016] Preferably, the two bridge connection lines are oppositely arranged or oppositely arranged.

[0017] In an embodiment, the bridge connection line comprises a first sub-connection line and a second sub-connection line, the first sub-connection line and the second sub-connection line are cross-arranged, and the first sub-connection line and the second sub-connection line both extend along a straight line;

[0018] The first sub-connection line comprises a first end and a third end, the second sub-connection line comprises a second end and a fourth end; the intersection of the first sub-connection line and the second sub-connection line is located between the first end and the third end and between the second end and the fourth end; the first end and the second end are connected to one of the second touch units, and the third end and the fourth end are connected to another of the second touch units;

[0019] Preferably, the intersection of the first sub-connection line and the second sub-connection line is a rounded corner;

[0020] More preferably, the radius corresponding to the rounded corner is 6 μm-10 μm.

[0021] In an embodiment, the end of the bridge connection line comprises a plurality of branches, and each of the plurality of branches is connected to one of the second touch units.

[0022] In an embodiment, the first touch unit and the second touch unit corresponding to the part of the connection unit are hollow structures;

[0023] Preferably, the first touch unit and the second touch unit are both grid structures with a plurality of meshes, and the area of the partial meshes of the first touch unit and the second touch unit corresponding to the connection unit is greater than that of the other partial meshes.

[0024] To solve the above technical problems, the second technical solution provided by the present application is to provide a display device, comprising a bending part; the display device comprises a display screen body and a touch panel; the touch panel is arranged on one side of the display screen body; at least the part of the touch panel corresponding to the bending part is the touch panel of any one of the above.

[0025] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a touch panel and a display device, the touch panel comprising a first touch electrode, a second touch electrode and a connection unit; the first touch electrode comprises a plurality of first touch units arranged along a first direction and electrically connected to each other; the second touch electrode comprises a plurality of second touch units arranged along a second direction; the first direction intersects the second direction; the second touch electrode is arranged in the same layer as the first touch electrode; the connection unit connects two adjacent second touch units; the connection unit is arranged in a different layer from the second touch electrode; wherein, the connection unit comprises a bridge point connection line and a bridge point auxiliary line, the two adjacent second touch units are respectively connected to the bridge point connection line, and the bridge point auxiliary line is arranged around the bridge point connection line to disperse the stress received by the bridge point connection line when the touch panel is bent or curled, to protect the bridge point connection line, improve the reliability of the bridge point connection line, reduce the risk of failure of the bridge point connection line, and avoid touch failure of the bending or curling part of the touch panel. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a cross-sectional schematic view of the touch panel provided by the embodiments of the present application;

[0028] Figure 2 is a partial structure schematic view of the touch panel provided by the embodiments of the present application;

[0029] Figure 3 is Figure 1 is a structure schematic view of the first embodiment of the connection unit of the touch panel shown in the figure;

[0030] Figure 4 is Figure 3 is a partial enlarged view of the connection unit A area shown in the figure;

[0031] Figure 5 is a partial structure diagram of the second metal layer corresponding to the connection unit shown in FIG. 7; Figure 3

[0032] Figure 6 is a structure diagram of the second embodiment of the connection unit of the touch panel shown in FIG. 8; Figure 1

[0033] Figure 7 is a partial enlarged view of the M area of the connection unit shown in FIG. 9; Figure 6

[0034] Figure 8 is a partial structure diagram of the second metal layer corresponding to the connection unit shown in FIG. 10; Figure 6

[0035] Figure 9 is a structure diagram of the third embodiment of the connection unit of the touch panel shown in FIG. 11; Figure 1

[0036] Figure 10 is a structure diagram of the fourth embodiment of the connection unit of the touch panel shown in FIG. 12; Figure 1

[0037] Figure 11 is a structure diagram of the display device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0039] In the following description, specific details are set forth in order to provide a thorough understanding of the present application, but the present application can be practiced without one or more of the specific details. In some cases, well-known structures and techniques have not been described in detail in order to avoid obscuring the present application.

[0040] ​​​​​​The terms "first", "second", "third", etc. in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components, and if the specific posture (as shown in the drawings) changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.

[0041] Reference herein to "embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0043] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic view of a cross section of a touch panel provided by an embodiment of the present application, Figure 2 is a schematic view of a partial structure of a touch panel provided by an embodiment of the present application.

[0044] The touch panel 1 includes a first insulating layer 11, a first metal layer 12, a second insulating layer 13, a second metal layer 14 and a third insulating layer 15 which are sequentially stacked. A connection unit 121 is formed by patterning the first metal layer 12. A first touch electrode 141 and a second touch electrode 142 are formed by patterning the second metal layer 14. That is, the first touch electrode 141 and the second touch electrode 142 are provided in the same layer, and the connection unit 121 is provided in a different layer from the second touch electrode 142.

[0045] The first touch electrode 141 includes a plurality of first touch units 1411 arranged along a first direction X and electrically connected to each other. The second touch electrode 142 includes a plurality of second touch units 1421 arranged along a second direction Y. The first direction X and the second direction Y intersect, and the first touch electrode 141 and the second touch electrode 142 are arranged in a cross manner. In the embodiment, the first direction X and the second direction Y are perpendicular to each other. The connection unit 121 connects two adjacent second touch units 1421, so that the two adjacent second touch units 1421 are electrically connected. The second touch unit 1421 is electrically connected to the connection unit 121 through a via hole (not shown in the figure) on the second insulating layer 13.

[0046] In the prior art, the connection unit is generally a single or double straight line. When the display device using the touch panel is a curved screen or a folding screen, the connection unit is prone to cracking due to stress concentration in the folded or curved part of the touch panel, resulting in touch failure. In order to improve the reliability of the connection unit and avoid disconnection of the connection unit, the structure of the connection unit 121 is designed to solve the above problems.

[0047] Please refer to Figure 3 and Figure 4 , Figure 3 is Figure 1 the structure diagram of the first embodiment of the connection unit of the touch panel shown in Figure 4 is Figure 3 the local enlarged view of the connection unit A area shown in.

[0048] The connection unit 121 includes a bridge point connection line 1211 and a bridge point auxiliary line 1212, and the bridge point auxiliary line 1212 is arranged around the bridge point connection line 1211. The two adjacent second touch units 1421 are respectively connected to the bridge point connection line 1211. By arranging the bridge point auxiliary line 1212 around the bridge point connection line 1211, the stress on the bridge point connection line 1211 when the touch panel 1 is bent or rolled is dispersed, avoiding stress concentration on the bridge point connection line 1211 when the touch panel 1 is bent or rolled, preventing the bridge point connection line 1211 from cracking due to stress, reducing the risk of short circuit of the bridge point connection line 1211, protecting the bridge point connection line 1211, improving the reliability of the bridge point connection line 1211, reducing the risk of failure of the bridge point connection line 1211, improving the reliability of the connection unit 121, and avoiding touch failure of the bent or rolled part of the touch panel 1.

[0049] It should be noted that the bridge point auxiliary line 1212 is arranged apart from the bridge point connection line 1211, and the bridge point auxiliary line 1212 is not electrically connected to the second touch unit 1421.

[0050] In this embodiment, the bridge point auxiliary line 1212 is arranged around the entire circumference of the bridge point connecting line 1211 to form a ring structure. It can be understood that the shape of the bridge point auxiliary line 1212 can be circular, triangular, rhomboid, rectangular, etc., and can be designed according to specific needs. In other embodiments, the bridge point auxiliary line 1212 is not arranged around the entire circumference of the bridge point connecting line 1211, which can disperse stress to a certain extent and improve the reliability of the bridge point connecting line 1211.

[0051] Optionally, the ring structure is a centrally symmetrical figure to uniformly distribute stress in the circumferential direction of the bridge point connection line 1211.

[0052] Optionally, the ring structure formed by the bridge point auxiliary line 1212 includes at least one vertex angle 1212a to reduce stress concentration.

[0053] For example, both the first touch unit 1411 and the second touch unit 1421 are rhomboid in shape, and the ring structure formed by the bridge point auxiliary lines 1212 is rhomboid (e.g. Figure 3 (As shown).

[0054] In this embodiment, the bridge connection line 1211 includes a first sub-connection line 1211b and a second sub-connection line 1211c. One end of the first sub-connection line 1211b is connected to a second touch unit 1421, and the other end of the first sub-connection line 1211b is connected to one end of the second sub-connection line 1211c. The other end of the second sub-connection line 1211c is connected to another second touch unit 1421. The first sub-connection line 1211b and the second sub-connection line 1211c form an angle greater than zero and less than 180°. For example, the bridge connection line 1211 is V-shaped, and each end of the V-shape is connected to a second touch unit 1421.

[0055] Optionally, the connection between the first sub-connector 1211b and the second sub-connector 1211c is rounded (e.g., ...). Figure 4 As shown, the radius of the rounded corner is 5μm-15μm to reduce stress concentration. If the radius of the rounded corner is less than 5μm, the angle formed between the first sub-connecting line 1211b and the second sub-connecting line 1211c is too small, and the distance between the two ends of the first sub-connecting line 1211b and the second sub-connecting line 1211c is too close, which is not conducive to the connection with the two adjacent second touch units 1421. If the radius of the rounded corner is greater than 15μm, the effect of reducing stress concentration is not good, which is not conducive to ensuring the reliability of the bridge point connecting line 1211.

[0056] In the embodiment, the connecting unit 121 includes two bridge point connecting lines 1211 described above, and the two bridge point connecting lines 1211 are symmetrically arranged along a straight line L passing through the center of the connecting unit 121. By arranging the two bridge point connecting lines 1211, the number of paths for electrically connecting the two adjacent second touch control units 1421 is increased, and the connection reliability of the connecting unit 121 is further improved, so that the failure of one bridge point connecting line 1211 does not directly lead to the failure of the touch control of the touch panel.

[0057] Optionally, the two bridge point connecting lines 1211 are arranged oppositely (as shown in Figure 3 ) or oppositely, and the specific arrangement is selected according to the needs. It should be noted that the oppositely or oppositely arrangement of the two bridge point connecting lines 1211 refers to the oppositely or oppositely arrangement of the rounded corners of the two bridge point connecting lines 1211.

[0058] Continuing to refer to Figure 3 , the end of the bridge point connecting line 1211 includes a plurality of branches 1211a. The plurality of branches 1211a are connected with one second touch control unit 1421, and the number of paths for electrically connecting the two adjacent second touch control units 1421 is further increased, which is beneficial to improve the connection reliability of the connecting unit 121.

[0059] Please refer to Figure 5 , Figure 5 is a partial structure diagram of the second metal layer corresponding to the connecting unit shown in Figure 3 .

[0060] The first touch control unit 1411 and the second touch control unit 1421 corresponding to the part of the connecting unit 121 are in a hollow structure, so as to reduce the overlapping area of the orthographic projection of the connecting unit 121 on the second metal layer 14 and the first touch control unit 1411 and the second touch control unit 1421, and further reduce the parasitic capacitance and improve the performance of the touch panel.

[0061] Specifically, the first touch control unit 1411 and the second touch control unit 1421 are both grid structures with a plurality of mesh holes, and the area of the mesh holes of the part of the first touch control unit 1411 and the second touch control unit 1421 corresponding to the connecting unit 121 is greater than that of the other parts, so as to reduce the parasitic capacitance.

[0062] Please refer to Figure 6 and Figure 7 , Figure 6 is a structure diagram of the connecting unit of the second embodiment of the touch panel shown in Figure 1 , Figure 7 is a structure diagram of the connecting unit of the second embodiment of the touch panel shown in Figure 6A partial enlarged view of the connection unit M region is shown.

[0063] The connection unit 121 in the second embodiment differs from the connection unit 121 in the first embodiment in that the shape of the bridge point connection line 1211 is different; the structure of the bridge point auxiliary line 1212 is the same and will not be described again.

[0064] In this embodiment, the bridge point connection line 1211 includes a first sub-connection line 1211b and a second sub-connection line 1211c, the first sub-connection line 1211b and the second sub-connection line 1211c are arranged in cross, and the first sub-connection line 1211b and the second sub-connection line 1211c both extend along a straight line. The first sub-connection line 1211b includes a first end portion a and a third end portion c, and the second sub-connection line 1211c includes a second end portion b and a fourth end portion d; the intersection of the first sub-connection line 1211b and the second sub-connection line 1211c is located between the first end portion a and the third end portion c and between the second end portion b and the fourth end portion d. Illustratively, the shape of the bridge point connection line 1211 is X-shaped, the X-shaped includes the first end portion a, the second end portion b, the third end portion c and the fourth end portion d, the first end portion a and the third end portion c are located on the same straight line, and the second end portion b and the fourth end portion d are located on the same straight line.

[0065] The first end portion a and the second end portion b are connected with one second touch control unit 1421, and the third end portion c and the fourth end portion d are connected with another second touch control unit 1421. It can be understood that one second touch control unit 1421 is connected with two end portions of the bridge point connection line 1211, which increases the number of paths for realizing electrical connection of the adjacent two second touch control units 1421, and improves the connection reliability of the connection unit 121.

[0066] Optionally, the intersection of the first sub-connection line 1211b and the second sub-connection line 1211c is a rounded corner (as shown in Figure 7 ), so as to reduce the stress concentration. The radius corresponding to the rounded corner is 6 μm-10 μm. If the radius corresponding to the rounded corner is less than 6 μm, the distance between the first end portion a and the fourth end portion d is too close, which is not conducive to the connection with the adjacent two second touch control units 1421. If the radius corresponding to the rounded corner is greater than 10 μm, the effect of reducing stress concentration is not good, which is not conducive to ensuring the reliability of the bridge point connection line 1211.

[0067] Please continue to refer to Figure 6 , the first end portion a, the second end portion b, the third end portion c and the fourth end portion d of the bridge point connection line 1211 all include a plurality of branches 1211a. The plurality of branches 1211a are all connected with one second touch control unit 1421, which further increases the number of paths for realizing electrical connection of the adjacent two second touch control units 1421, and is conducive to improving the connection reliability of the connection unit 121.

[0068] Please refer toFigure 8 , Figure 8 is Figure 6 is a local structure diagram of the second metal layer corresponding to the connection unit shown in

[0069] The first touch control unit 1411 and the second touch control unit 1421 are in a hollow structure corresponding to the connection unit 121, so as to reduce the overlapping area of the orthographic projection of the connection unit 121 on the second metal layer 14 and the first touch control unit 1411 and the second touch control unit 1421, thereby reducing the parasitic capacitance and improving the performance of the touch panel.

[0070] Specifically, the first touch control unit 1411 and the second touch control unit 1421 are both in a grid structure with a plurality of meshes, and the area of the meshes corresponding to the part of the first touch control unit 1411 and the second touch control unit 1421 corresponding to the connection unit 121 is greater than the area of the meshes of other parts, so as to reduce the parasitic capacitance.

[0071] Please refer to Figure 9 , Figure 9 is Figure 1 is a structure diagram of the connection unit of the third embodiment of the touch panel shown in

[0072] The connection unit 121 in the third embodiment is different from the connection unit 121 in the first embodiment in that the structure of the bridge point auxiliary line 1212 is different, and the structure of the bridge point connection line 1211 is the same, which will not be described again.

[0073] In the present embodiment, the bridge point auxiliary line 1212 further comprises a reinforcing line 1212b, and the ring structure comprises at least one top corner 1212a, and the two ends of the reinforcing line 1212b are connected to the two edges corresponding to the top corner 1212a, respectively. By setting the reinforcing line 1212b, more stress can be dispersed, and the bridge point connection line 1211 can be better protected.

[0074] For example, the ring structure of the bridge point auxiliary line 1212 is a rhombus, and further comprises four reinforcing lines 1212b. The reinforcing line 1212b comprises a first line segment (not marked in the figure) and a second line segment (not marked in the figure), one end of the first line segment is connected to one side of the rhombus, the other end of the first line segment is connected to one end of the second line segment, the other end of the second line segment is connected to the other side of the rhombus; the first line segment is perpendicular to the second line segment (as shown in Figure 9

[0075] It can be understood that the structure of the bridge point connection line 1211 in the second embodiment of the connection unit 121 can also be used in the present embodiment.

[0076] Please refer to Figure 10 , Figure 10 is Figure 1 is a structure diagram of the connection unit of the fourth embodiment of the touch panel shown in​

[0077] The fourth embodiment of the connection unit 121 is different from the first embodiment of the connection unit 121 in that the structure of the bridge point auxiliary line 1212 is different, and the structure of the bridge point connecting line 1211 is the same, which will not be repeated.

[0078] In this embodiment, the annular structure includes at least one top corner 1212a which is bent towards the inside of the annular structure. By changing the path of the bridge point auxiliary line 1212, more stress can be dispersed, and the bridge point connecting line 1211 can be better protected.

[0079] For example, the annular structure is a rhombus, and the four top corners 1212a of the rhombus are all bent towards the inside (as shown in Figure 10 ).

[0080] It can be understood that the structure of the bridge point connecting line 1211 in the second embodiment of the connection unit 121 can also be used in this embodiment.

[0081] Please refer to Figure 11 , Figure 11 is a structural schematic diagram of a display device provided by the embodiment of the present application.

[0082] The display device includes a touch panel 1 and a display screen body 2, and the touch panel 1 is arranged on one side of the display screen body 2. The display device includes a bending part (not shown in the figure). At least the part of the touch panel 1 corresponding to the bending part is the touch panel 1 introduced in the above embodiments, which is beneficial to improve the quality of the display device. The display device can be a mobile phone, a tablet computer, etc.

[0083] It can be understood that the touch panel 1 of the display device can be entirely provided with the structure introduced in the above embodiments; or the part corresponding to the bending part is provided with the structure introduced in the above embodiments, and the part not corresponding to the bending part is provided with the existing structure.

[0084] The above is only the implementation of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A touch panel, characterized in that, include: The first touch electrode includes a plurality of first touch units arranged along a first direction and electrically connected to each other. The second touch electrode includes a plurality of second touch units arranged along a second direction; the first direction intersects the second direction; the second touch electrode and the first touch electrode are disposed in the same layer; A connecting unit connects two adjacent second touch units; the connecting unit is disposed on a different layer from the second touch electrode. The connection unit includes a bridge point connecting line and a bridge point auxiliary line. Two adjacent second touch units are respectively connected to the bridge point connecting line, and the bridge point auxiliary line is arranged around the bridge point connecting line. The bridge point auxiliary line is spaced apart from the bridge point connecting line, and the bridge point auxiliary line is not electrically connected to the second touch unit.

2. The touch panel according to claim 1, characterized in that, The bridge point auxiliary lines are arranged around the bridge point connecting lines to form a ring structure.

3. The touch panel according to claim 2, characterized in that, The ring structure is a centrally symmetrical figure.

4. The touch panel according to claim 2, characterized in that, The ring structure includes at least one apex.

5. The touch panel according to claim 2, characterized in that, The bridge point auxiliary line also includes a reinforcing line, and the ring structure includes at least one apex corner. The two ends of the reinforcing line are respectively connected to the two sides corresponding to the apex corner.

6. The touch panel according to claim 2, characterized in that, The annular structure includes at least one apex, which bends inward toward the annular structure.

7. The touch panel according to any one of claims 4-6, characterized in that, Both the first touch unit and the second touch unit are rhomboid in shape; the ring structure is rhomboid.

8. The touch panel according to claim 1, characterized in that, The bridge connection line includes a first sub-connection line and a second sub-connection line. One end of the first sub-connection line is connected to a second touch electrode, and the other end of the first sub-connection line is connected to one end of the second sub-connection line. The other end of the second sub-connection line is connected to another second touch electrode. An angle is formed between the first sub-connection line and the second sub-connection line, and the angle is greater than zero and less than 180°.

9. The touch panel according to claim 8, characterized in that, The connection between the first sub-connecting line and the second sub-connecting line is rounded.

10. The touch panel according to claim 9, characterized in that, The radius corresponding to the rounded corner is 5μm-15μm.

11. The touch panel according to claim 8, characterized in that, The connection unit includes two bridge point connecting lines, which are symmetrically arranged along a straight line passing through the center of the connection unit.

12. The touch panel according to claim 11, characterized in that, The connecting lines of the two bridge points are arranged opposite each other or back to back.

13. The touch panel according to claim 1, characterized in that, The bridge point connecting line includes a first sub-connecting line and a second sub-connecting line. The first sub-connecting line and the second sub-connecting line are intersected and both the first sub-connecting line and the second sub-connecting line extend along a straight line. The first sub-connecting line includes a first end and a third end, and the second sub-connecting line includes a second end and a fourth end; the intersection of the first sub-connecting line and the second sub-connecting line is located between the first end and the third end and between the second end and the fourth end; the first end and the second end are connected to one second touch unit, and the third end and the fourth end are connected to another second touch unit.

14. The touch panel according to claim 13, characterized in that, The intersection of the first sub-connecting line and the second sub-connecting line is rounded.

15. The touch panel according to claim 14, characterized in that, The radius corresponding to the rounded corner is 6μm-10μm.

16. The touch panel according to claim 1, characterized in that, The end of the bridge connection line includes several branches, and each of the branches is connected to a second touch unit.

17. The touch panel according to claim 1, characterized in that, The portions of the first touch unit and the second touch unit corresponding to the connecting unit are hollow structures.

18. The touch panel according to claim 17, characterized in that, Both the first touch unit and the second touch unit are mesh structures with multiple holes, and the area of ​​some of the mesh holes in the first touch unit and the second touch unit corresponding to the connecting unit is larger than the area of ​​the mesh holes in other parts.

19. The touch panel according to claim 11, characterized in that, The symmetry axis of the connecting line between the two bridge points is parallel to the bending line when the touch panel is bent or rolled up, and the two adjacent second touch units connected by the connecting unit are arranged in a direction parallel to the symmetry axis. The two bridge point connecting lines are located on opposite sides of the straight line of the axis of symmetry, and the bridge point connecting lines do not overlap with the straight line of the axis of symmetry.

20. The touch panel according to claim 1, characterized in that, The bridge point connecting line is located inside the bridge point auxiliary line, and the bridge point auxiliary line is arranged around the bridge point connecting line to form a closed loop structure.

21. The touch panel according to claim 1, characterized in that, The bridge point connecting line and the bridge point auxiliary line are set on the same layer.

22. The touch panel according to claim 1, characterized in that, The bridge point auxiliary line is not electrically connected to the bridge point connecting line, and the bridge point auxiliary line is not electrically connected to the first touch electrode.

23. A display device, comprising a bent portion, characterized in that, include: Display screen body; A touch panel is disposed on one side of the display screen body; at least the portion of the touch panel corresponding to the bent portion is the touch panel according to any one of claims 1-22.

Images