Display panel and display device

Abstract

The present invention discloses a display panel and a display device. The display panel includes a display function layer and a touch function layer. The touch function layer includes a bridge connection layer, an insulating layer, and a touch electrode layer. The bridge connection layer includes multiple bridge electrodes. The touch electrode layer includes multiple first touch electrodes and multiple second touch electrodes. The first touch electrode includes multiple first electrode units electrically connected to each other. The second touch electrode includes multiple second electrode units electrically connected to each other. In the same first touch electrode, any two adjacent first electrode units are electrically connected via a bridge electrode. The first electrode unit includes a first electrode segment. The vertical projection of the first electrode segment on the plane of the bridge connection layer is located within the coverage area of ​​the bridge electrode. The display panel and display device provided by the present invention solve the problem of short circuits between different touch electrodes caused by metal residues, ensuring normal touch function.

Description

[0001] This application is a divisional application with the application date of June 2, 2020, application number 202010491527.4, and invention name “A display panel and display device”. Technical Field

[0002] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] With the advancement of the information age, touchscreen technology has gradually replaced keypad technology as the mainstream technology for mobile terminals and other applications. Touchscreen technology uses a method whereby when a finger, pen, or other device touches a touchscreen mounted on the front of a display device, the location of the touch (in the form of coordinates) is detected and sent to the CPU, thereby determining the input information. Currently, touchscreens have a wide range of applications, primarily in mobile terminals such as touch-screen phones and laptops, as well as human-machine display interfaces (HMIs) in the industrial automation industry.

[0004] To realize the touch function of the display device, it is usually necessary to introduce touch electrodes into the display device. Different touch electrodes are insulated from each other, which requires disconnecting the touch metal layer. However, during the preparation of the touch metal layer, some metal residues will be generated due to process reasons. The metal residues will cause a short circuit between different touch electrodes, thereby making the touch function ineffective. Summary of the Invention

[0005] The present invention provides a display panel and a display device, which can avoid short circuits between different touch electrodes caused by metal residues and ensure normal touch functions.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, comprising a display function layer and a touch function layer;

[0007] The touch function layer includes a bridge connection layer, an insulating layer and a touch electrode layer which are sequentially arranged on the light-emitting side of the display function layer;

[0008] The cross-bridge connection layer includes a plurality of bridge electrodes;

[0009] The touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes, wherein the first touch electrodes and the second touch electrodes are insulated from each other; the first touch electrode includes a plurality of first electrode units electrically connected to each other, and the plurality of first electrode units are arranged along a first direction; the second touch electrode includes a plurality of second electrode units electrically connected to each other, and the plurality of second electrode units are arranged along a second direction, wherein the first direction and the second direction intersect; in the same first touch electrode, any two adjacent first electrode units are electrically connected via the bridge electrode;

[0010] The first electrode unit includes a first electrode portion, and a vertical projection of the first electrode portion on the plane where the bridge connection layer is located is located within the coverage range of the bridge electrode.

[0011] In a second aspect, an embodiment of the present invention further provides a display device, which includes the display device described in the first aspect.

[0012] The technical solution provided by the embodiment of the present invention is to set the vertical projection of the first electrode portion of the first electrode unit in the first touch electrode on the plane where the bridge connection layer is located to be within the coverage range of the bridge electrode, so that there is a certain gap between the first electrode portion and the residual metal formed at the edge of the bridge electrode, thereby insulating the first electrode portion from the residual metal, thereby avoiding a short circuit between the first touch electrode and the second touch electrode where the first electrode portion is located due to metal residue, thereby ensuring the touch effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of an existing display panel;

[0014] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A;

[0015] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the B-B' direction;

[0016] Figure 4 A schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0017] Figure 5 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0018] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at C;

[0019] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the D-D' direction;

[0020] Figure 8 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0021] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure along the E-E' direction;

[0022] Figure 10 A schematic structural diagram of a bridge electrode terminal provided by an embodiment of the present invention;

[0023] Figure 11 A schematic structural diagram of another bridge electrode terminal provided by an embodiment of the present invention;

[0024] Figure 12 A schematic structural diagram of another bridge electrode terminal provided by an embodiment of the present invention;

[0025] Figure 13 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure along the F-F' direction;

[0027] Figure 15 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0028] Figure 16 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0029] Figure 17 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0030] Figure 18 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0031] Figure 19 A schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0032] Figure 20 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] Figure 1 is a structural diagram of an existing display panel. Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A, Figure 3 for Figure 2 Schematic diagram of the cross-section structure along the B-B' direction. Figure 1-3The display panel includes a display function layer 10 and a touch function layer 11. The touch function layer 11 includes multiple touch drive electrodes 12, multiple touch sensing electrodes 13, and multiple bridge electrodes 14 for connecting the touch drive electrodes 12 or the touch sensing electrodes 13. The touch drive electrodes 12 and the touch sensing electrodes 13 are arranged on the same metal layer, and the bridge electrodes 14 and the touch drive electrodes 12 and the touch sensing electrodes 13 are arranged on different metal layers. The touch drive electrodes 12 and the touch sensing electrodes 13 are insulated from each other. The display panel generates touch information based on the capacitance change between the touch drive electrodes 12 and the touch sensing electrodes 13, thereby realizing the touch function.

[0035] In order to prevent the display function layer 10 from affecting the capacitance change between the touch drive electrode 12 and the touch sensing electrode 13, the bridge electrode 14 is generally arranged in the metal layer adjacent to the display function layer 10, and the touch drive electrode 12 and the touch sensing electrode 13 are arranged in the metal layer on the side of the bridge electrode 14 away from the display function layer 10. Figure 2 and Figure 3 When preparing the touch function layer 11, a metal layer is first prepared on the light-emitting side of the display function layer 10, and then an etching process is used to form the bridge electrode 14. Then, an insulating layer 15 is prepared on the bridge electrode 14, and another metal layer is prepared on the insulating layer 15. The touch drive electrode 12 and the touch sensing electrode 13 are formed by the etching process. When forming the touch drive electrode 12 and the touch sensing electrode 13, a small amount of metal will remain at the edge of the bridge electrode 14. The residual metal 16 Figure 2 The positions circled by the middle oval are electrically connected to the touch driving electrodes 12 and the touch sensing electrodes 13 , respectively, causing a short circuit between the touch driving electrodes 12 and the touch sensing electrodes 13 , thereby rendering the touch function ineffective.

[0036] Based on the above technical problems, an embodiment of the present invention provides a display panel and a display device, including a display function layer and a touch function layer. The touch function layer includes a bridge connection layer, an insulating layer and a touch electrode layer, which are sequentially arranged on the light-emitting side of the display function layer. The bridge connection layer includes multiple bridge electrodes. The touch electrode layer includes multiple first touch electrodes and multiple second touch electrodes. The first touch electrodes and the second touch electrodes are insulated from each other. The first touch electrode includes multiple first electrode units electrically connected to each other. The multiple first electrode units are arranged along a first direction. The second touch electrode includes multiple second electrode units electrically connected to each other. The multiple second electrode units are arranged along a second direction. The first direction and the second direction intersect. In the same first touch electrode, any two adjacent first electrode units are electrically connected through a bridge electrode. The first electrode unit includes a first electrode portion. The vertical projection of the first electrode portion on the plane where the bridge connection layer is located is within the coverage range of the bridge electrode.

[0037] By adopting the above technical solution, by setting the vertical projection of the first electrode division of the first electrode unit in the first touch electrode on the plane where the bridge connection layer is located to be within the coverage range of the bridge electrode, a certain gap is created between the first electrode division and the residual metal formed at the edge of the bridge electrode, thereby insulating the first electrode division from the residual metal, thereby avoiding a short circuit between the first touch electrode and the second touch electrode where the first electrode division is located due to metal residue, thereby ensuring the touch effect of the display panel.

[0038] The above is the core concept of the present invention. The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Figure 4 A schematic structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 5 A schematic structural diagram of another display panel provided by an embodiment of the present invention, Figure 6 for Figure 5 Schematic diagram of the enlarged structure at C, Figure 7 for Figure 6 The cross-sectional structure diagram along the D-D' direction is as follows: Figure 4-7 As shown, the display panel provided by the embodiment of the present invention includes a display function layer 20 and a touch function layer 21. The touch function layer 21 includes a bridge connection layer 211, an insulating layer 212 and a touch electrode layer 213 sequentially arranged on the light-emitting side of the display function layer 20. The bridge connection layer 211 includes a plurality of bridge electrodes 31. The touch electrode layer 213 includes a plurality of first touch electrodes 32 and a plurality of second touch electrodes 33. The first touch electrodes 32 and the second touch electrodes 33 are insulated from each other. The first touch electrode 32 includes a plurality of first electrode units 32 electrically connected to each other. 1. Multiple first electrode units 321 are arranged along a first direction X. The second touch electrode 33 includes multiple second electrode units 331 electrically connected to each other. The multiple second electrode units 331 are arranged along a second direction Y. The first direction X and the second direction Y intersect. In the same first touch electrode 32, any two adjacent first electrode units 321 are electrically connected via the bridge electrode 31. The first electrode unit 321 includes a first electrode segment 41. The vertical projection of the first electrode segment 41 on the plane where the bridge connection layer 211 is located is located within the coverage range of the bridge electrode 31.

[0040] Among them, reference Figure 4-7To minimize the impact of the display function layer 20 on the first touch electrodes 32 and second touch electrodes 33 in the touch function layer 21 and ensure a touch effect, the bridge electrode 31 is disposed on the bridge connection layer 211, which is closer to the display function layer 20, while the first touch electrodes 32 and second touch electrodes 33 are disposed on the touch electrode layer 213, which is farther from the display function layer 20. Specifically, in the touch electrode layer 213, a plurality of first electrode units 321 arranged along a first direction X are electrically connected in sequence via the bridge electrode 31 to form the first touch electrodes 32. A plurality of second electrode units 331 arranged along a second direction Y are electrically connected in sequence to form the second touch electrodes 33. The first touch electrodes 32 and the second touch electrodes 33 are insulated from each other. The display panel generates touch information based on the capacitance change between the first touch electrodes 32 and the second touch electrodes 33, thereby achieving touch function.

[0041] When forming the first touch electrodes 32 and the second touch electrodes 33, residual metal 34 is formed at the edge of the bridge electrode 31. The residual metal 34, the first touch electrodes 32, and the second touch electrodes 33 are all located in the touch electrode layer 213. Because the bridge electrode 31 intersects with the second touch electrodes 33, the residual metal 34 formed at the edge of the bridge electrode 31 is electrically connected to the second touch electrodes 33. If the residual metal 34 is further electrically connected to the first touch electrodes 32, a short circuit will occur between the first touch electrodes 32 and the second touch electrodes 33, thereby causing the touch function to fail.

[0042] In this embodiment, the first electrode unit 321 includes a first electrode portion 41. The first electrode portion 41 is a portion of the first electrode unit 321 for electrically connecting to the bridge electrode 31. Figure 6 and Figure 7 As shown, by setting the vertical projection of the first electrode portion 41 on the plane where the bridge connection layer 211 is located to be within the coverage range of the bridge electrode 31, a certain gap is created between the first electrode portion 41 and the residual metal 34 formed at the edge of the bridge electrode 31, thereby insulating the first electrode portion 41 from the residual metal 34, thereby avoiding a short circuit between the first touch electrode 32 where the first electrode portion 41 is located and the second touch electrode 33, thereby ensuring the touch effect of the display panel.

[0043] It should be noted that metal residues may exist at the edges of the bridge electrode 31 . The drawings provided in the embodiment of the present invention only show the residual metal 34 at the key position that may easily cause a short circuit between the first touch electrode 32 and the second touch electrode 33 .

[0044] In the display panel provided by the embodiment of the present invention, by setting the vertical projection of the first electrode division 41 of the first electrode unit 321 in the first touch electrode 32 within the coverage range of the bridge electrode 31 on the plane where the cross-bridge connection layer 211 is located, a certain gap is formed between the first electrode division 41 and the residual metal 34 formed at the edge of the bridge electrode 31, so that the first electrode division 41 and the residual metal 34 are insulated from each other, thereby avoiding a short circuit between the first touch electrode 32 where the first electrode division 41 is located and the second touch electrode 33, and ensuring the touch effect of the display panel.

[0045] Figure 8 FIG. is a schematic structural diagram of another display panel provided by the embodiment of the present invention. Figure 9 is Figure 8 a schematic cross-sectional structure diagram along the E-E' direction, as Figure 8 and Figure 9 shown. Optionally, the bridge electrode 31 includes a bridge electrode terminal 311 and a bridge trace 312 electrically connected to the bridge electrode terminal 311. The first electrode division 41 includes a first electrode terminal 411. The insulating layer 212 is provided with a plurality of vias 2121. The first electrode terminal 411 is electrically connected to the bridge electrode terminal 311 through the vias 2121. The vertical projection of the first electrode terminal 411 on the plane where the cross-bridge connection layer 211 is located is within the coverage range of the bridge electrode terminal 311.

[0046] Specifically, referring to Figure 8 and Figure 9 , the bridge electrode 31 is provided with a bridge electrode terminal 311, and the first electrode division 41 is provided with a first electrode terminal 411. The bridge electrode terminal 311 and the first electrode terminal 411 are electrically connected through the via 2121 on the insulating layer 212. By setting the vertical projection of the first electrode terminal 411 on the plane where the cross-bridge connection layer 211 is located within the coverage range of the bridge electrode terminal 311, a certain gap is formed between the first electrode terminal 411 and the residual metal 34 formed at the edge of the bridge electrode terminal 311, so that the first electrode terminal 411 and the residual metal 34 are insulated from each other, thereby avoiding a short circuit between the first touch electrode 32 where the first electrode terminal 411 is located and the second touch electrode 33, and ensuring the touch effect of the display panel.

[0047] Continuing to refer to Figure 8 , optionally, along the first direction X, the extension length of the first electrode terminal 411 is D1, and the extension length of the bridge electrode terminal 311 is D2, where D1 < D2; along the second direction Y, the extension length of the first electrode terminal 411 is D3, and the extension length of the bridge electrode terminal 311 is D4, where D3 < D4. And the vertical projection of the first electrode terminal 411 on the plane where the cross-bridge connection layer 211 is located does not overlap with the edge of the bridge electrode terminal 311.

[0048] Among them, such as Figure 8 and Figure 9 As shown, by setting the size of the bridge electrode terminal 311 to be larger than the size of the first electrode terminal 411, and ensuring that the vertical projection of the first electrode terminal 411 on the plane where the bridge connection layer 211 is located does not overlap with the edge of the bridge electrode terminal 311, the distance between the first electrode terminal 411 and the residual metal 34 formed at the edge of the bridge electrode terminal 311 is further increased, thereby ensuring the insulation effect between the first electrode terminal 411 and the residual metal 34 formed at the edge of the bridge electrode terminal 311.

[0049] Optionally, the center of a vertical projection of the first electrode terminal 411 on the plane where the bridge connection layer 211 is located overlaps with the center of the bridge electrode terminal 311 .

[0050] Among them, reference Figure 8 and Figure 9 The first electrode terminal 411 is aligned with the bridge electrode terminal 311 so that any edge of the first electrode terminal 411 is at a certain distance from the residual metal 34 at the edge of the bridge electrode terminal 311, thereby ensuring the insulation effect between the first electrode terminal 411 and the residual metal 34 at the edge of the bridge electrode terminal 311.

[0051] Optionally, 1nm≤D2-D1≤2nm, 1nm≤D4-D3≤2nm.

[0052] If the size difference between the bridge electrode terminal 311 and the first electrode terminal 411 is too small, the insulation effect between the first electrode terminal 411 and the residual metal 34 at the edge of the bridge electrode terminal 311 cannot be guaranteed. If the size difference between the bridge electrode terminal 311 and the first electrode terminal 411 is too large, the area of ​​the bridge electrode terminal 311 will be larger, which will have a significant impact on the capacitance between the first touch electrode 32 and the second touch electrode 33, and thus affect the touch effect. By setting appropriate values ​​for D2-D1 and D4-D3, this embodiment of the present invention ensures the insulation effect between the first electrode terminal 411 and the residual metal 34 at the edge of the bridge electrode terminal 311 while reducing the impact of the bridge electrode terminal 311 on the touch effect.

[0053] Continue to refer Figure 8 Optionally, along the second direction Y, the extension length of the bridge electrode terminal 311 is greater than the width of the bridge trace 312 , and the bridge electrode terminal 311 and the bridge trace 312 form a first corner 51 at the connection point.

[0054] Among them, such as Figure 8As shown, along the second direction Y, since the extension length of the bridge electrode terminal 311 is greater than the width of the bridge trace 312, a first corner 51 is formed at the connection between the bridge electrode terminal 311 and the bridge trace 312. On the one hand, metal is not likely to remain at the first corner 51, so the residual metal 34 is disconnected at the first corner 51, thereby further reducing the probability of a short circuit between the first touch electrode 32 and the second touch electrode 33; on the other hand, as shown in FIG. Figure 8 As shown, point a is the electrical connection point between the residual metal 34 and the second touch electrode 33, and point b is the electrical connection point between the residual metal 34 and the first touch electrode 32. By setting the extension length of the bridge electrode terminal 311 to be greater than the width of the bridge trace 312, the path distance of the residual metal 34 from point a to point b is extended, thereby increasing the probability of the residual metal 34 being disconnected.

[0055] Continue to refer Figure 8 Optionally, the bridge electrode terminal 311 includes at least one second corner 52 .

[0056] For example, Figure 8 As shown, the bridge electrode terminal 311 is a quadrilateral and thus includes four second corners 52 . Metal is not easily left at the second corners 52 , so the residual metal 34 is disconnected at the second corners 52 , thereby further reducing the probability of short circuit between the first touch electrode 32 and the second touch electrode 33 .

[0057] Figure 10 A schematic structural diagram of a bridge electrode terminal provided by an embodiment of the present invention is shown as an example. Figure 10 As shown, a triangular protrusion is provided on the bridge electrode terminal 311, forming a second corner 52. Metal is less likely to remain at the second corner 52, so the residual metal 34 is disconnected at the second corner 52, further reducing the probability of a short circuit between the first touch electrode 32 and the second touch electrode 33. Furthermore, the protrusion on the bridge electrode terminal 311 also extends the path distance of the residual metal 34 from point a to point b, thereby increasing the probability of disconnection of the residual metal 34. The second corner 52 can be one or more of an obtuse angle, a right angle, and an acute angle, which is not limited in this embodiment of the present invention.

[0058] Figure 11 This is a schematic diagram of another bridge electrode terminal structure provided by an embodiment of the present invention. In another embodiment, as Figure 11 As shown, the protruding structure provided on the bridge electrode terminal 311 is rectangular, thereby forming a plurality of second corners 52. Metal is not easily left at the second corners 52, so the residual metal 34 will be disconnected at the second corners 52, further reducing the probability of short circuit between the first touch electrode 32 and the second touch electrode 33. It should be noted that the protruding structure is not limited to the following: Figure 10 and Figure 11 The triangle and rectangle shown in the figure may also be any other shape, and those skilled in the art may configure the shape according to actual needs, as long as the second corner 52 can be formed.

[0059] Figure 12 This is a structural diagram of another bridge electrode terminal provided by an embodiment of the present invention. In other embodiments, such as Figure 12 As shown, a recessed structure can be provided on the bridge electrode terminal 311 to form a second corner 52. Metal is not easily left at the second corner 52, so the residual metal 34 will be disconnected at the second corner 52, further reducing the probability of a short circuit between the first touch electrode 32 and the second touch electrode 33. In addition, by providing a recessed structure on the bridge electrode terminal 311, the path distance of the residual metal 34 from point a to point b is also extended, thereby increasing the probability of disconnection of the residual metal 34. The shape of the recessed structure can be Figure 12 The rectangle shown may also be any other shape such as a triangle, and those skilled in the art may configure the shape according to actual needs, as long as the second corner 52 can be formed.

[0060] It should be noted that the number of second corners 52 can be determined by the number of protruding structures or recessed structures set on the bridge electrode terminal 311. Generally speaking, the more second corners 52 there are, the smaller the probability of short circuit between the first touch electrode 32 and the second touch electrode 33. However, it also increases the complexity of the bridge electrode terminal 311. Those skilled in the art can design it according to actual needs.

[0061] Optionally, the bridge trace 312 includes at least one third corner 53 .

[0062] For example, continue to refer to Figure 10 A triangular protrusion is provided on the bridge trace 312, forming a third corner 53. Metal is less likely to remain at the third corner 53, so the residual metal 34 is disconnected at the third corner 53, further reducing the probability of a short circuit between the first touch electrode 32 and the second touch electrode 33. Furthermore, the protrusion on the bridge trace 312 extends the path distance of the residual metal 34 from point a to point b, thereby increasing the probability of disconnection of the residual metal 34. The third corner 53 can be one or more of an obtuse angle, a right angle, and an acute angle, which is not limited in this embodiment of the present invention.

[0063] In another embodiment, continue to refer to Figure 11The protruding structure provided on the bridge trace 312 is rectangular, thereby forming a plurality of third corners 53. Metal is not easily left at the third corners 53, so the residual metal 34 will be disconnected at the third corners 53, further reducing the probability of short circuit between the first touch electrode 32 and the second touch electrode 33. It should be noted that the protruding structure is not limited to the following: Figure 10 and Figure 11 The triangle and rectangle shown in the figure may also be any other shape, and those skilled in the art may configure the shape according to actual needs, as long as the third corner 53 can be formed.

[0064] In other embodiments, continue to refer to Figure 12 A recessed structure can also be provided on the bridge trace 312 to form a third corner 53. Metal is not easily left at the third corner 53, so the residual metal 34 will be disconnected at the third corner 53, further reducing the probability of a short circuit between the first touch electrode 32 and the second touch electrode 33. In addition, by providing a recessed structure on the bridge trace 312, the path distance of the residual metal 34 from point a to point b is also extended, thereby increasing the probability of the residual metal 34 being disconnected. The shape of the recessed structure can be Figure 12 The rectangle shown may also be any other shape such as a triangle, and those skilled in the art may configure the shape according to actual needs, as long as the third corner 53 can be formed.

[0065] It should be noted that the number of third corners 53 can be determined by the number of protruding structures or recessed structures set in the bridge trace 312. Generally speaking, the more third corners 53 there are, the smaller the probability of short circuit between the first touch electrode 32 and the second touch electrode 33. However, it also increases the complexity of the bridge trace 312. Those skilled in the art can design it according to actual needs.

[0066] Figure 13 A schematic structural diagram of another display panel provided by an embodiment of the present invention is shown. Figure 14 for Figure 13 The cross-sectional structure diagram along the F-F' direction is as follows: Figure 13 and Figure 14 As shown, optionally, the bridge trace 312 extends along the first direction X, the first electrode section 41 further includes a first electrode trace 412, the first electrode trace 412 extends along the first direction X, and the vertical projection of the first electrode trace 412 on the plane where the bridge connection layer 211 is located is located within the coverage range of the bridge trace 312.

[0067] Specifically, such as Figure 13 and Figure 14As shown, to reduce the connection resistance between the first electrode segment 41 and the bridge electrode 31, each first electrode unit 321 is electrically connected to the bridge electrode 31 through multiple vias 2121. Therefore, the first electrode segment 41 includes a first electrode trace 412 that overlaps with the bridge trace 312. The display panel provided in this embodiment of the present invention arranges the vertical projection of the first electrode trace 412 on the plane where the bridge connection layer 211 is located within the coverage area of ​​the bridge trace 312. This creates a certain gap between the first electrode trace 412 and the residual metal 34 formed at the edge of the bridge trace 312, thereby insulating the first electrode segment 41 from the residual metal 34. This prevents a short circuit between the first touch electrode 32 and the second touch electrode 33 where the first electrode segment 41 is located, thereby ensuring the touch performance of the display panel.

[0068] Continue to refer Figure 13 and Figure 14 Optionally, along the second direction Y, the width of the bridge trace 312 is greater than the width of the first electrode trace 412, and the vertical projection of the first electrode trace 412 on the plane where the bridge connection layer 211 is located does not overlap with the edge of the bridge trace 312.

[0069] Among them, such as Figure 13 and Figure 14 As shown, by setting the width of the bridge trace 312 to be greater than the width of the first electrode trace 412, and ensuring that the vertical projection of the first electrode trace 412 on the plane where the bridge connection layer 211 is located does not overlap with the edge of the bridge trace 312, the distance between the first electrode trace 412 and the residual metal 34 formed at the edge of the bridge trace 312 is further increased, thereby ensuring the insulation effect between the first electrode trace 412 and the residual metal 34 formed at the edge of the bridge trace 312.

[0070] Figure 15 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 15 As shown, optionally, the first electrode unit 321 and the second electrode unit 331 are both grid structures, the grid structure includes a plurality of first lines 61 extending along the first direction X and a plurality of second lines 62 extending along the second direction Y, two adjacent first lines 61 and two adjacent second lines 62 intersect to define a mesh 63 of the grid structure, the display function layer 20 includes a plurality of sub-pixels 64, and the vertical projection of the mesh 63 on the plane where the display function layer 20 is located covers at least one sub-pixel 64.

[0071] The first electrode unit 321 and the second electrode unit 331 are both made of metal, which has good electrical conductivity but poor light transmittance. By configuring the first electrode unit 321 and the second electrode unit 331 to form a grid structure, the grid structure includes a plurality of first lines 61, a second line 62, and meshes 63 defined by the intersection of two adjacent first lines 61 and two adjacent second lines 62. The meshes 63 are configured so that their vertical projections on the plane of the display function layer 20 cover at least one sub-pixel 64, thereby preventing the first and second lines 61, 62, and sub-pixels 64 from overlapping, thereby avoiding affecting the luminous effect of the sub-pixels 64.

[0072] Figure 16 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 16 As shown, optionally, in the same first electrode unit 321 , the second trace 62 is not connected to the first electrode portion 41 , and a vertical projection of the second trace 62 on the plane where the bridge connection layer 211 is located does not overlap with the edge of the bridge electrode 31 .

[0073] Among them, by setting the second routing line 62 to be disconnected from the first electrode division 41, and the vertical projection of the second routing line 62 on the plane where the bridge connection layer 211 is located does not overlap with the edge of the bridge electrode 31, the second routing line 62 of the first electrode unit 321 is insulated from the residual metal 34 formed at the edge of the bridge electrode 31, thereby avoiding a short circuit between the first touch electrode 32 and the second touch electrode 33, thereby ensuring the touch effect of the display panel.

[0074] Continue to refer Figure 16 Optionally, the display function layer 20 includes a plurality of sub-pixels 64 , along the first direction X, the shortest distance between the first electrode unit 321 and the second electrode unit 331 is D8 , and the length of the sub-pixel 64 is D9 , wherein D8 > D9 .

[0075] Among them, along the first direction X, by ensuring that the shortest distance between the first electrode unit 321 and the second electrode unit 331 is greater than the length of the sub-pixel 64, a larger distance is provided between the first electrode unit 321 and the second electrode unit 331, which helps to increase the probability of disconnection between the parts of the residual metal 34 and ensure insulation between the first electrode unit 321 and the second electrode unit 331.

[0076] Figure 17 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 17As shown, optionally, the bridge electrode 31 includes at least two groups of sub-bridge electrodes 310, the sub-bridge electrodes 310 include a first bridge electrode terminal 3111, a second bridge electrode terminal 3112 and a bridge trace 312 respectively connecting the first bridge electrode terminal 3111 and the second bridge electrode terminal 3112, the first bridge electrode terminal 3111 and the second bridge electrode terminal 3112 are respectively electrically connected to two adjacent first electrode units 321 through holes, and the bridge trace 312 extends along the first direction X.

[0077] Specifically, by configuring the bridge electrode 31 to include at least two groups of sub-bridge electrodes 310, two adjacent first electrode units 321 are electrically connected via multiple groups of sub-bridge electrodes 310, thereby helping to reduce the resistance of the bridge electrode 31 and minimize the loss of touch signals on the bridge electrode 31. In other embodiments, the number of groups of sub-bridge electrodes 310 can be set according to actual needs.

[0078] It should be noted that each sub-bridge electrode 310 may include multiple first bridge electrode terminals 3111 and multiple second bridge electrode terminals 3112, and each first electrode unit 321 can be electrically connected to the sub-bridge electrode 310 through multiple first bridge electrode terminals 3111 and multiple second bridge electrode terminals 3112, thereby further reducing the connection resistance between the first electrode unit 321 and the sub-bridge electrode 310.

[0079] Continue to refer Figure 17 Optionally, the bridge electrode 31 further includes at least one connecting wire 313 extending along the second direction Y, and two adjacent groups of sub-bridge electrodes 310 are electrically connected via the connecting wire 313 .

[0080] By configuring the bridge electrode 31 to include at least one connecting trace 313 extending along the second direction Y, the bridge electrode 31 has traces extending along both the first direction X and the second direction Y. This makes the trace distribution more uniform, thereby preventing the boundaries of the bridge electrode 31 from being too distinct and affecting the display effect. In other embodiments, the number of connecting traces 313 can be set according to actual needs.

[0081] Optionally, the first touch electrodes 32 are touch driving electrodes, and the second touch electrodes 33 are touch sensing electrodes; or, the first touch electrodes 32 are touch sensing electrodes, and the second touch electrodes 33 are touch driving electrodes.

[0082] Among them, the touch drive electrodes and touch sensing electrodes are both electrically connected to the driver chip. In the touch stage, the driver chip sends a touch drive signal to the touch drive electrode. When the touch sensing electrode senses the touch of the entire touch panel, it sends the touch sensing signal to the driver chip. The driver chip determines the touch position based on the touch sensing signal, thereby realizing the touch function of the display panel.

[0083] Figure 18 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 18 As shown, optionally, the display panel provided in an embodiment of the present invention is an organic light-emitting display panel, and the display function layer 20 includes a pixel circuit layer 201, an organic light-emitting layer 202 and an encapsulation layer 203 arranged in sequence, and the touch function layer 21 is located on the side of the encapsulation layer 203 away from the organic light-emitting layer 202.

[0084] Among them, the organic light-emitting display panel includes an organic light-emitting layer 202, which can emit light by itself. Each pixel can project light of the three primary colors of red, green and blue. Therefore, the display effect of the organic light-emitting display panel is more vivid and full. Since the pixels of the organic light-emitting display panel work independently, the power consumption is low and the response speed is fast. In addition, the organic light-emitting display panel does not need to set a backlight layer, which helps to realize a curved screen.

[0085] Figure 19 A structural diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 19 As shown, optionally, the display panel provided in an embodiment of the present invention is a liquid crystal display panel, the display function layer 20 includes an array substrate 204, a liquid crystal layer 205 and a color film substrate 206 arranged in sequence, and the touch function layer 21 is located on the side of the color film substrate 206 away from the liquid crystal layer 205.

[0086] Among them, the liquid crystal display panel includes a liquid crystal layer 205, which is arranged on the light-emitting surface of the backlight. The array substrate 204 controls the deflection of the liquid crystal in the liquid crystal layer 205 to control the brightness and darkness of the pixel points, and then controls the display pattern of the liquid crystal display panel. The display effect of the liquid crystal display panel is relatively natural, and it is not easy to get tired after watching for a long time. It has low cost and long life.

[0087] The display panel provided by the embodiment of the present invention increases the probability of disconnection between parts of the residual metal 34 by setting the specific size, structure and positional relationship of the first electrode portion 41 of the first electrode unit 321 in the first touch electrode 32 and the bridge electrode 31, and ensures a large distance between the first electrode unit 321 and the second electrode unit 331, thereby greatly reducing the probability of short circuit between the first electrode unit 321 and the second electrode unit 331, thereby ensuring the touch effect of the display panel.

[0088] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 20 A schematic structural diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 20As shown, the display device 70 includes the display panel 71 described in any embodiment of the present invention. Therefore, the display device 70 provided by the embodiment of the present invention has the technical effects of the technical solutions in any of the above embodiments. The explanation of the same or corresponding structures and terms as those in the above embodiments will not be repeated here. The display device 70 provided by the embodiment of the present invention can be Figure 20 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0089] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It includes a display function layer and a touch function layer; The touch function layer includes a cross-bridge connection layer, an insulating layer, and a touch electrode layer that are sequentially arranged on the light-emitting side of the display function layer; The cross-bridge connection layer includes a plurality of bridge electrodes; The touch electrode layer includes a plurality of first touch electrodes and a plurality of second touch electrodes, and the first touch electrodes and the second touch electrodes are insulated from each other; the first touch electrodes include a plurality of first electrode units that are electrically connected to each other, and the plurality of first electrode units are arranged along a first direction; the second touch electrodes include a plurality of second electrode units that are electrically connected to each other, and the plurality of second electrode units are arranged along a second direction, and the first direction and the second direction intersect; in the same first touch electrode, any two adjacent first electrode units are electrically connected through the bridge electrode; The first electrode unit includes a first electrode branch, and the perpendicular projection of the first electrode branch on the plane where the cross-bridge connection layer is located is within the coverage range of the bridge electrode; The bridge electrode includes a bridge electrode terminal and a bridge trace electrically connected to the bridge electrode terminal, and the bridge trace extends along the first direction; The first electrode branch further includes a first electrode trace, and the first electrode trace extends along the first direction, and the perpendicular projection of the first electrode trace on the plane where the cross-bridge connection layer is located is within the coverage range of the bridge trace; Along the second direction, the extension length of the bridge electrode terminal is greater than the width of the bridge trace, and the bridge electrode terminal and the bridge trace form a first corner at the connection; 2. The display panel according to claim 1, wherein: The bridge electrode includes a bridge electrode terminal and a bridge trace electrically connected to the bridge electrode terminal; The first electrode branch includes a first electrode terminal, and the insulating layer is provided with a plurality of vias, and the first electrode terminal is electrically connected to the bridge electrode terminal through the vias; The perpendicular projection of the first electrode terminal on the plane where the cross-bridge connection layer is located is within the coverage range of the bridge electrode terminal; 3. The display panel according to claim 2, wherein: Along the first direction, the extension length of the first electrode terminal is D1, and the extension length of the bridge electrode terminal is D2, where D1 < D2; along the second direction, the extension length of the first electrode terminal is D3, and the extension length of the bridge electrode terminal is D4, where D3 < D4; And the perpendicular projection of the first electrode terminal on the plane where the cross-bridge connection layer is located does not overlap with the edge of the bridge electrode terminal; 4. The display panel according to claim 3, wherein: The center of the perpendicular projection of the first electrode terminal on the plane where the cross-bridge connection layer is located overlaps with the center of the bridge electrode terminal; 5. The display panel according to claim 3, wherein: 1nm ≤ D2 - D1 ≤ 2nm; 1nm ≤ D4 - D3 ≤ 2nm; 6. The display panel according to claim 1, wherein: The bridge electrode terminal includes at least one second corner; 7. The display panel according to claim 2, wherein: The bridge trace includes at least one third corner; 8. The display panel according to claim 7, wherein: Along the second direction, the width of the bridge trace is greater than the width of the first electrode trace, and the perpendicular projection of the first electrode trace on the plane where the cross-bridge connection layer is located does not overlap with the edge of the bridge trace; 9. The display panel according to claim 2, wherein: The first electrode unit and the second electrode unit are both grid structures, the grid structure including a plurality of first lines extending along a first direction and a plurality of second lines extending along a second direction, wherein two adjacent first lines and two adjacent second lines intersect to define meshes of the grid structure; The display function layer includes a plurality of sub-pixels; The vertical projection of the mesh on the plane where the display function layer is located covers at least one of the sub-pixels.

10. The display panel according to claim 9, wherein: In the same first electrode unit, the second wiring is not connected to the first electrode portion, and a vertical projection of the second wiring on the plane where the bridge connection layer is located does not overlap with an edge of the bridge electrode.

11. The display panel according to claim 1, wherein The display function layer includes a plurality of sub-pixels; Along the first direction, the shortest distance between the first electrode unit and the second electrode unit is D8, and the length of the sub-pixel is D9, where D8>D9.

12. The display panel according to any one of claims 1 to 11, characterized in that: The bridge electrode includes at least two groups of sub-bridge electrodes, and the sub-bridge electrodes include a first bridge electrode terminal, a second bridge electrode terminal, and bridge traces respectively connected between the first bridge electrode terminal and the second bridge electrode terminal; The first bridge electrode terminal and the second bridge electrode terminal are respectively electrically connected to two adjacent first electrode unit perforations, and the bridge trace extends along the first direction.

13. The display panel according to claim 12, wherein: The bridge electrode further includes at least one connecting wire extending along the second direction, and two adjacent groups of sub-bridge electrodes are electrically connected via the connecting wire.

14. The display panel according to claim 1, wherein The first touch electrodes are touch drive electrodes, and the second touch electrodes are touch sensing electrodes; or, the first touch electrodes are touch sensing electrodes, and the second touch electrodes are touch drive electrodes.

15. The display panel according to claim 1, wherein The display panel is an organic light emitting display panel; The display function layer includes a pixel circuit layer, an organic light-emitting layer and an encapsulation layer which are arranged in sequence; the touch function layer is located on a side of the encapsulation layer away from the organic light-emitting layer.

16. The display panel according to claim 1, wherein The display panel is a liquid crystal display panel; The display function layer includes an array substrate, a liquid crystal layer, and a color filter substrate arranged in sequence; the touch function layer is located on a side of the color filter substrate away from the liquid crystal layer.

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 16.

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