Touch Panel and Display Panel

Abstract

This invention is a divisional application of Chinese Application No. 202011431027.8. The touch panel and display panel provided by the embodiments of this invention have improved the first connection structure connecting two adjacent first electrode units and the second connection structure connecting two adjacent second electrode units. The second connection structure is designed to include a plurality of connection grids and graphic units adjacent to the connection grids, and the first connection structure is designed such that the orthographic projection of the first connection structure on the second connection structure intersects with the graphics to form a graphic grid identical to the connection grid. In this way, through the graphic design of the second connection structure and the design of the routing manner of the first connection structure, the intersection area between the first connection structure and the second connection structure can be reduced, thereby reducing the parasitic capacitance generated between the first connection structure and the second connection structure, improving the influence of the bridge contact points of the touch electrodes on the touch linearity of the touch panel, and ensuring that the touch panel has better use stability during use.

Description

[0001] This invention is a divisional application of a Chinese application with the application number 202011431027.8 and the invention title "Touch Panel and Display Panel". Technical Field

[0002] This invention belongs to the field of touch technology, and particularly relates to a touch panel and a display panel. Background Art

[0003] The increasing touch requirements of users for flexible touch products have promoted the development of the touch panels of flexible products towards more refined manufacturing methods. In some usage scenarios, the touch panel usually needs to have better usage stability. However, the usage stability of common touch panels may be affected by the bridge connection points of touch electrodes. Summary of the Invention

[0004] In view of this, this invention provides a touch panel and a display panel, which improve the second connection structure connecting two adjacent second electrode units, and design the second connection structure to include a plurality of connection grids and graphic units adjacent to the connection grids. With such a design, by graphically designing the second connection structure, the intersection area between the first connection structure and the second connection structure can be reduced, thereby reducing the parasitic capacitance generated between the first connection structure and the second connection structure, and further improving or solving the influence of the bridge connection points of touch electrodes on the touch linearity of the touch panel, ensuring that the touch panel has better usage stability when in use.

[0005] The first aspect of the embodiments of this application provides a touch panel 100, including:

[0006] A plurality of first electrode units 1 distributed along a first direction D1;

[0007] A plurality of second electrode units 2 distributed along a second direction D2;

[0008] Two adjacent first electrode units 1 are connected by a first connection structure 3, and two adjacent second electrode units 2 are connected by a second connection structure 4. An insulating layer is provided between the first connection structure 3 and the second connection structure 4;

[0009] The second connection structure 4 includes a connection grid 41 and a graphic unit 42, and the connection grid 41 includes at least one sub-grid;

[0010] The first connection structure 3 includes a bridge wire, and the bridge wire forms at least one polygon. Each polygon corresponds to a connection grid 41 in position, and the connection grid 41 is located within the orthographic projection of the polygon corresponding to it on the second connection structure 4;

[0011] The orthographic projection of the bridge connection line on the second connection structure 4 intersects with the graphic unit 42 to form a graphic grid that is the same as the connection grid 41 or at least part of the sub-grids of the connection grid 41.

[0012] In an alternative embodiment, the orthographic projection area of the graphic unit 42 on the insulating layer is greater than or equal to twice the orthographic projection area of the smallest sub-grid in the connection grid 41 on the insulating layer.

[0013] In an alternative embodiment, the first connection structure 3 includes two bridge connection lines, the two bridge connection lines are respectively broken lines and intersect with each other to form at least one polygon.

[0014] In an alternative embodiment, the first connection structure 3 includes a first bridge structure 31 and a second bridge structure 32, and the first bridge structure 31 and the second bridge structure 32 respectively include at least one polygon.

[0015] In an alternative embodiment, the first bridge structure 31 and the second bridge structure 32 are symmetric to each other;

[0016] The first bridge structure 31 and the second bridge structure 32 are connected to each other, or the first bridge structure 31 and the second bridge structure 32 are separated from each other.

[0017] In an alternative embodiment, the first bridge structure 31 and the second bridge structure 32 are in point contact with each other;

[0018] Along the second direction D2, the vertex of the polygon of the first bridge structure 31 shares the vertex of the polygon of the second bridge structure 32 that is opposite to the vertex of the polygon of the first bridge structure 31.

[0019] In an alternative embodiment, the first bridge structure 31 and the second bridge structure 32 intersect with each other;

[0020] The first bridge structure 31 and the second bridge structure 32 intersect with each other to form an overlapping area, and the orthographic projection area of the overlapping area on the second connection structure 4 is greater than or equal to the orthographic projection area of a sub-grid on the second connection structure 4.

[0021] A second aspect of the embodiments of the present application provides a touch panel 100, including:

[0022] A plurality of first electrode units 1 distributed along a first direction D1;

[0023] A plurality of second electrode units 2 distributed along a second direction D2;

[0024] Two adjacent first electrode units 1 are connected by a first connection structure 3, and two adjacent second electrode units 2 are connected by a second connection structure 4. An insulating layer is provided between the first connection structure 3 and the second connection structure 4;

[0025] The second connection structure 4 includes a connection grid 41 and a graphic unit 42;

[0026] The first connection structure 3 includes a first bridge structure 31 and a second bridge structure 32. The first bridge structure 31 and the second bridge structure 32 each include two bridge connection lines, and the two bridge connection lines are respectively broken lines and intersect each other to form at least one polygon;

[0027] The connection grid 41 includes sub-grids, and the orthographic projection area of the graphic unit 42 on the insulating layer is greater than or equal to twice the orthographic projection area of the smallest sub-grid in the connection grid on the insulating layer;

[0028] The first bridge structure 31 and the second bridge structure 32 are in point contact with each other. Along the second direction D2, the vertices of the polygon of the first bridge structure 31 and the vertices of the polygon of the second bridge structure 32 opposite to the vertices of the polygon of the first bridge structure 31 are shared.

[0029] In an alternative embodiment, the orthographic projection of the polygon on the second connection structure 4 intersects with the graphic unit 42 to form a graphic grid identical to the connection grid 41 or at least part of the sub-grids of the connection grid 41.

[0030] In an alternative embodiment, the sub-grids include two first sub-grids 411 connected to each other along a third direction, and a second sub-grid 412 and a third sub-grid 413 connected to each other along a fourth direction;

[0031] The orthographic projection area of the first sub-grid 411 on the insulating layer is smaller than the orthographic projection area of the second sub-grid 412 on the insulating layer;

[0032] The orthographic projection area of the first sub-grid 411 on the insulating layer is smaller than the orthographic projection area of the third sub-grid 413 on the insulating layer;

[0033] The orthographic projection area of the graphic unit 42 on the insulating layer is greater than or equal to twice the orthographic projection area of the first sub-grid 411 on the insulating layer;

[0034] The two first sub-grids 411, the second sub-grid 412, and the third sub-grid 413 share a vertex.

[0035] In an alternative embodiment, the first electrode unit 1 includes a plurality of first grids 11, and the plurality of first grids 11 are formed by the intersection of a plurality of first metal wires. The second electrode unit 2 includes a plurality of second grids 21, and the plurality of second grids 21 and the plurality of connection grids 41 are both formed by the intersection of a plurality of second metal wires;

[0036] The graphic unit 42 includes a third grid formed by the intersection of the second metal wires.

[0037] In an alternative embodiment, the first connection structure 3 further includes a reinforcement structure 6; the reinforcement structure 6 includes two reinforcement metal wires 61; one ends of the two reinforcement metal wires 61 are connected to each other, and the other ends respectively intersect two extension lines where a vertex of a polygon is located to form a reinforcement grid.

[0038] A third aspect of the embodiments of the present application provides a display panel 200, including pixel units 7 for emitting light. The pixel units 7 include at least three sub-pixels of different colors, and further include the touch panel 100 provided in the present application as described above on one side of the pixel units 7. The sub-grids are correspondingly arranged with the sub-pixels.

[0039] In an alternative embodiment, the connection grid 41 includes a plurality of adjacent sub-grids, and the orthographic projection of at least one pixel unit 7 on the touch panel 100 is located inside the outer contour of the connection grid 41;

[0040] The orthographic projections of the sub-pixels of the pixel unit 7 whose orthographic projection is located inside the outer contour of the connection grid 41 on the touch panel 100 are respectively located inside the inner contours of the sub-grids.

[0041] In an alternative embodiment, the pixel unit 7 whose orthographic projection is located inside the outer contour of the connection grid 41 includes two green sub-pixels 71, one red sub-pixel 72, and one blue sub-pixel 73; the connection grid 41 includes two first sub-grids 411 connected to each other along a third direction, and a second sub-grid 412 and a third sub-grid 413 connected to each other along a fourth direction;

[0042] The orthographic projections of the two green sub-pixels 71 on the touch panel 100 are respectively located inside the inner contours of the two first sub-grids 411, the orthographic projection of the red sub-pixel 72 on the touch panel 100 is located inside the inner contour of the second sub-grid 412, and the orthographic projection of the blue sub-pixel 73 on the touch panel 100 is located inside the inner contour of the third sub-grid 413.

[0043] In summary, compared with the prior art, the touch panel and the display panel provided by the embodiments of the present invention improve the first connection structure connecting two adjacent first electrode units and the second connection structure connecting two adjacent second electrode units. The second connection structure is designed to include a plurality of connection grids and graphic units adjacent to the connection grids, and the first connection structure is designed such that the orthographic projection of the first connection structure on the second connection structure intersects with the graphics to form a graphic grid identical to the connection grid. In this way, through the graphic design of the second connection structure and the design of the routing method of the first connection structure, the intersection area between the first connection structure and the second connection structure can be reduced, thereby reducing the parasitic capacitance generated between the first connection structure and the second connection structure, and further improving or solving the influence of the bridge contact points of the touch electrodes on the touch linearity of the touch panel, ensuring that the touch panel has better use stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 FIG. is a schematic diagram of a bridging structure of a common touch panel.

[0045] Figure 2 FIG. is a plan view of a touch panel provided by an embodiment of the present invention.

[0046] Figure 3 FIG. is a partially enlarged schematic diagram of one touch sensing unit of the touch panel provided by an embodiment of the present invention.

[0047] Figure 4 is Figure 3 a schematic diagram of the second connection structure shown in FIG.

[0048] Figure 5 is Figure 4 a schematic diagram of the structure of the connection grid shown in FIG.

[0049] Figure 6 FIG. is a first schematic diagram of the first connection structure of the touch panel provided by an embodiment of the present invention.

[0050] Figure 7 FIG. is a second schematic diagram of the first connection structure of the touch panel provided by an embodiment of the present invention.

[0051] Figure 8 FIG. is a third schematic diagram of the first connection structure of the touch panel provided by an embodiment of the present invention.

[0052] Figure 9 FIG. is a fourth schematic diagram of the first connection structure of the touch panel provided by an embodiment of the present invention.

[0053] Figure 10 FIG. is a fifth schematic diagram of the first connection structure of the touch panel provided by an embodiment of the present invention.

[0054] Figure 11 The structural schematic diagram of the display panel provided by the embodiment of the present invention.

[0055] Figure 12 is Figure 11 The schematic diagram of the relative positions of the pixel unit and the connection grid shown in the figure.

[0056] Icon:

[0057] 100 - Touch panel;

[0058] 1 - First electrode unit; 11 - First grid;

[0059] 2 - Second electrode unit; 21 - Second grid;

[0060] 3 - First connection structure; 31 - First bridge structure; 311 - First bridge connection wire; 312 - Second bridge connection wire; 313 - Fifth bridge connection wire; 314 - Sixth bridge connection wire; 32 - Second bridge structure; 321 - Third bridge connection wire; 322 - Fourth bridge connection wire; 323 - Seventh bridge connection wire; 324 - Eighth bridge connection wire;

[0061] 4 - Second connection structure; 41 - Connection grid; 411 - First sub - grid; 412 - Second sub - grid; 413 - Third sub - grid; 42 - Pattern;

[0062] 6 - Reinforcement structure; 61 - Reinforcement metal wire;

[0063] 200 - Display panel;

[0064] 7 - Pixel unit; 71 - Green sub - pixel; 72 - Red sub - pixel; 73 - Blue sub - pixel. Detailed implementation manners

[0065] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the drawings. It is only for convenience in describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, it should be noted that when an element is referred to as being "formed on another element", it can be directly connected to the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element.

[0067] After the inventors analyzed the bridge connection points between the touch electrodes of a common touch panel, it was found that the parasitic capacitance generated at the bridge connection points is one of the reasons affecting the touch linearity of the touch panel. As Figure 1 shown, when the first connection structure 3 crosses the second connection structure 4, a mutual capacitance will be generated at their intersection part in the direction D, and this mutual capacitance can be understood as a parasitic capacitance. Due to the existence of this parasitic capacitance, the linearity of the touch panel may be reduced. To improve this problem, an embodiment of the present invention provides a touch panel and a display panel. By performing a graphic design on the second connection structure 4 and designing the routing manner of the first connection structure 3, the intersection area between the first connection structure 3 and the second connection structure 4 can be reduced, thereby reducing the parasitic capacitance generated between the first connection structure 3 and the second connection structure 4, and further improving or solving the influence of the bridge connection points of the touch electrodes on the touch linearity of the touch panel, ensuring that the touch panel has better use stability when in use.

[0068] Please refer to Figure 2 and Figure 3 . The touch panel 100 provided by the embodiment of the present invention may include a plurality of first electrode units 1 distributed along a first direction D1, and a plurality of second electrode units 2 distributed along a second direction D2. The first direction D1 and the second direction D2 may intersect, but are not limited thereto. Adjacent two first electrode units 1 are connected by a first connection structure 3, adjacent two second electrode units 2 are connected by a second connection structure 4, and an insulating layer (not shown in the figure) is provided between the first connection structure 3 and the second connection structure 4.

[0069] Furthermore, please refer to Figure 4, the second connection structure 4 may include a connection grid 41 and a graphic unit 42, the graphic unit 42 may be adjacent to the connection grid 41, and the connection grid (41) may include at least one sub-grid. The orthographic projection of the first connection structure 3 on the second connection structure 4 intersects with the graphic unit 42 to form a graphic grid that is the same as the connection grid 41 or at least part of the sub-grid of the connection grid (41). Among them, the first connection structure 3 can cross the second connection structure 4 to achieve the connection between two adjacent first electrode units 1, and the first connection structure 3 can be a non-linear structure. In this embodiment, the shape of the graphic unit 42 can be rectangular or heart-shaped, or other shapes, which are not limited here.

[0070] Understandably, Figure 4 By graphically designing the second connection structure 4 and designing the routing method of the first connection structure 3 respectively, the intersection area of the first connection structure 3 and the second connection structure 4 can be reduced, thereby reducing the parasitic capacitance generated between the first connection structure 3 and the second connection structure 4, thereby improving or solving the influence of the bridge point of the touch electrode 100 on the touch linearity of the touch panel 100, ensuring that the touch panel 100 has better stability when in use.

[0071] In some examples, in order to minimize the overlap area between the orthographic projection of the first connection structure 3 on the second connection structure 4 and the second connection structure 4, please refer to Figure 5 , the connected grid 41 may include a plurality of interconnected subgrids, such as the first subgrid 411, the second subgrid 412, the third subgrid 413, etc., and the plurality of subgrids may share a vertex. The two first subgrids 411 interconnected along the third direction are respectively connected to the second subgrid 412 and the third subgrid 413 interconnected along the fourth direction. In this embodiment, the third direction may be the same as or different from the first direction D1, and the fourth direction may be the same as or different from the second direction D2. The first subgrid 411 may be a regular polygonal grid, and the second subgrid 412 and the third subgrid 413 may be regular or irregular.

[0072] Please continue reading Figure 5, the orthographic projection area of the first sub-grid 411 on the insulating layer is smaller than that of the second sub-grid 412 on the insulating layer, and the orthographic projection area of the first sub-grid 411 on the insulating layer is smaller than that of the third sub-grid 413 on the insulating layer. In some possible examples, the orthographic projection area of the second sub-grid 412 on the insulating layer may be greater than that of the third sub-grid 413 on the insulating layer. In some other possible examples, the orthographic projection area of the second sub-grid 412 on the insulating layer may also be equal to that of the third sub-grid 413 on the insulating layer. In addition, the orthographic projection area of the second sub-grid 412 on the insulating layer may also be smaller than that of the third sub-grid 413 on the insulating layer, which is not limited herein.

[0073] The orthographic projection area of the graphic unit 42 on the insulating layer is greater than or equal to twice the orthographic projection area of the first sub-grid 411 on the insulating layer. For example, when the graphic unit 42 is rectangular, the orthographic projection area of the graphic unit 42 on the insulating layer may be twice the orthographic projection area of the first sub-grid 411 on the insulating layer. For another example, when the graphic unit 42 is heart-shaped, the orthographic projection area of the graphic unit 42 on the insulating layer may be three times the orthographic projection area of the first sub-grid 411 on the insulating layer. In this embodiment, the graphic unit 42 may be formed by performing a hollowing-out design on some metal lines of the second electrode unit 2.

[0074] With such a design, by performing an irregular design on at least some sub-grids of the connection grid 41, the overlapping area between the orthographic projection of the first connection structure 3 on the second connection structure 4 and the second connection structure 4 can be further reduced, thereby reducing the parasitic capacitance generated between the first connection structure 3 and the second connection structure 4 to ensure the touch linearity of the touch panel 100.

[0075] In some examples, please continue to refer to Figure 4 , the first electrode unit 1 may include a plurality of first grids 11, and the plurality of first grids 11 are formed by the intersection of a plurality of first metal lines. The second electrode unit 2 includes a plurality of second grids 21, and the plurality of second grids 21 and the plurality of connection grids 41 are both formed by the intersection of a plurality of second metal lines. Further, the second grid 21 may include a plurality of connection grids 41 that are the same as the second connection structure 4, and the graphic unit 42 may include a third grid formed by the intersection of second metal lines. In some examples, the third grid may be a closed grid or a non-closed grid, which is not limited herein. In this way, by performing a grid design on the first electrode unit 1 and the second electrode unit 2, the thinning of the entire touch panel 100 can be achieved, and at the same time, the parasitic capacitance generated at the bridge connection points of different electrode units of the touch panel 100 can be reduced.

[0076] In some examples, the first connection structure 3 may include bridge connection lines, and the bridge connection lines form at least one polygon. Each polygon corresponds to a position of a connection grid 41, and the connection grid 41 is located within the orthographic projection of the corresponding polygon on the second connection structure 4. The orthographic projection of the bridge connection lines on the second connection structure 4 intersects with the graphic unit 42 to form a graphic grid that is the same as the connection grid 41 or at least part of the sub-grid of the connection grid 41.

[0077] In some examples, the connection structure 3 may include a first bridge structure and a second bridge structure. The first bridge structure and the second bridge structure each include at least one bridge connection line, and the first bridge structure and the second bridge structure are separated from or connected to each other.

[0078] In some examples, the first bridge structure and the second bridge structure may be symmetric with each other along the first direction D1. In some examples, please refer to Figure 6 ., the form of connection between the first bridge structure 31 and the second bridge structure 32 may be that the first bridge structure 31 and the second bridge structure 32 are in point contact with each other. Further, the first bridge structure 31 includes a first bridge connection line 311 and a second bridge connection line 312, and the second bridge structure 32 may include a third bridge connection line 321 and a fourth bridge connection line 322. The first bridge connection line 311 and the second bridge connection line 312 are each a broken line and intersect with each other to form at least one polygon S1, and the third bridge connection line 321 and the fourth bridge connection line 322 are each a broken line and intersect with each other to form at least one polygon S2. The orthographic projection area of the polygon S1 and the polygon S2 on the second connection structure 4 is greater than or equal to the orthographic projection area of at least one connection grid 41 on the second connection structure 4.

[0079] Please continue to refer to Figure 6 ., along the second direction D2, the vertices of the polygon S1 and the polygon S2 may have the same vertex. For example, the vertex of the polygon S1 of the first bridge structure 31 is shared with the vertex of the polygon S2 of the second bridge structure 32 that is opposite to the vertex of the polygon S1 of the first bridge structure 31. Along the first direction D1, the first bridge connection line 311 and the second bridge connection line 312 are mirror-symmetric with each other, and the third bridge connection line 321 and the fourth bridge connection line 322 are mirror-symmetric with each other.

[0080] In some examples, please refer to Figure 7 ., along the second direction D2, the first bridge structure 31 and the second bridge structure 32 are separated from each other. Along the second direction D2, there is a spacing between the polygon S1 and the polygon S2 and they do not have a common vertex. For example, there is a spacing between the vertex of the polygon S1 of the first bridge structure 31 and the vertex of the polygon S2 of the second bridge structure 32 that is opposite to the vertex of the polygon S1 of the first bridge structure 31.

[0081] In some examples, please refer toFigure 8 and Figure 4 The form of the connection between the first bridge structure 31 and the second bridge structure 32 may be that the first bridge structure 31 and the second bridge structure 32 intersect each other. An overlapping area Z1 is formed by the intersection of the first bridge structure 31 and the second bridge structure 32, and the orthographic projection area of the overlapping area Z1 on the second connection structure 4 is greater than or equal to the orthographic projection area of one first sub-grid 411 on the second connection structure 4.

[0082] Furthermore, the first bridge structure 31 and the second bridge structure 32 each include two bridge connection lines. A polygon S1 corresponding to the first bridge structure 31 and a polygon S2 corresponding to the second bridge structure 32 are formed by the intersection of the two bridge connection lines. The orthographic projection area of the polygon S1 on the second connection structure 4 is greater than or equal to the orthographic projection area of at least one connection grid 41 on the second connection structure 4, and the orthographic projection area of the polygon S2 on the second connection structure 4 is greater than or equal to the orthographic projection area of at least one connection grid 41 on the second connection structure 4. Along the second direction D2, one vertex of the polygon S1 of the first bridge structure 31 is located inside the polygon S2 formed by the second bridge structure 32, and the vertex of the polygon S2 of the second bridge structure 32 opposite to the vertex of the polygon S1 of the first bridge structure 31 is located inside the polygon S2 formed by the first bridge structure 31 to form the overlapping area Z1.

[0083] It can be understood that Figure 6 、 Figure 7 and Figure 8 respectively show three design methods of the first bridge structure 31 and the second bridge structure 32. During the actual implementation process, any design method can be selected according to actual needs for design, which is not limited herein. In Figure 6 、 Figure 7 or Figure 8 's design, the bridge connection lines corresponding to the first bridge structure 31 and the second bridge structure 32 are broken lines. In some other possible embodiments, the broken-line bridge connection lines can be replaced.

[0084] In some examples, the first bridge structure 31 and the second bridge structure 32 can be designed in the manner shown in Figure 9 . For example, the first bridge structure 31 may include a fifth bridge connection line 313 and a sixth bridge connection line 314 that are parallel to each other, and the second bridge structure 32 may include a seventh bridge connection line 323 and an eighth bridge connection line 324 that are parallel to each other. The first connection structure 3 may include an overlapping area Z2 formed by the intersection of the fifth bridge connection line 313 and the sixth bridge connection line 314 with the seventh bridge connection line 323 and the eighth bridge connection line 324, and may also include two extension lines respectively connected to each vertex of the overlapping area Z2. Among them, the extension line may be a part of the fifth bridge connection line 313, the sixth bridge connection line 314, the seventh bridge connection line 323, or the eighth bridge connection line 324.

[0085] In some examples, please continue to refer to Figure 9 , the positive projection of the overlapping area Z2 on the second connection structure 4 overlaps with the graphic unit 42. For example, the area of the positive projection of the overlapping area Z2 on the second connection structure 4 is greater than or equal to the area of the positive projection of a first sub-grid 411 on the second connection structure 4. When the graphic unit 42 is greater than or equal to the overlapping area Z2, the overlapping area Z2 can overlap with the graphic unit 42. Further, the positive projection of the extension line on the second connection structure 4 can intersect with the graphic unit 42.

[0086] It can be understood that through Figure 6 , Figure 7 , Figure 8 and Figure 9 the designs of the first bridge structure 31 and the second bridge structure 32 in , not only can the parasitic capacitance between the first bridge structure 31 and the second bridge structure 32 be reduced, but also the design of the first bridge structure 31 can weaken and release the stress generated when the touch panel 100 is bent, thereby preventing the first bridge structure 31 from breaking when the touch panel 100 is bent. This can ensure the structural stability and stress resistance of the touch panel 100 during use, thereby improving the use stability of the touch panel 100.

[0087] In some examples, to further enhance the structural stability and stress resistance of the touch panel 100 during use, please refer to Figure 10 in combination, and it may further include at least one reinforcing structure 6. The reinforcing structure 6 includes two reinforcing metal wires 61. One ends of the two reinforcing metal wires 61 are connected to each other, and the other ends respectively intersect with two extension lines where a vertex of the polygon S3 is located. The reinforcing structure 6 and a vertex of the overlapping area Z3 form a reinforcing grid. In this embodiment, both the polygon S3 and the overlapping area Z3 may refer to the area enclosed by the intersection of the fifth bridge connection line 313, the sixth bridge connection line 314, the seventh bridge connection line 323, and the eighth bridge connection line 324.

[0088] With such a design, by adding the reinforcing structure 6, the stress resistance of the first connection structure 3 can be improved, thereby further enhancing the structural stability and stress resistance of the touch panel 100 during use. During actual implementation, the reinforcing grid may have the same shape as the overlapping area Z3 and share vertices. For example, the number of the reinforcing structures 6 may correspond one-to-one to the number of the reinforcing grids. The number of the reinforcing structures 6 may be one, two, three, or four, which is not limited herein. Thus, multiple reinforcing structures 6 can form multiple different reinforcing grids, and the different reinforcing grids can be distributed in the D1 direction or the second direction D2.

[0089] It can be understood that in Figure 6 , Figure 7 and Figure 8The corresponding first connection structure 3 can also be provided with the above-mentioned reinforcing structure 6. For example, the reinforcing structure 6 can be provided at at least one intersection of the first bridge connection line 311 and the second bridge connection line 312, or the reinforcing structure 6 can be provided at at least one intersection of the third bridge connection line 321 and the fourth bridge connection line 322. The reinforcing structure 6 can also be provided at the inflection point of the first bridge connection line 311, the inflection point of the second bridge connection line 312, the inflection point of the third bridge connection line 321, and / or the inflection point of the fourth bridge connection line 322, which is not limited herein.

[0090] In some examples, the bridge connection lines of the first connection structure 3 can all be parallel to the first metal line. As Figure 4 shown, the routing direction of the first metal line can be two mutually intersecting first routing directions d1 and second routing directions d2. That the bridge connection lines of the first connection structure 3 are all parallel to the first metal line can be understood as that a part of the bridge connection lines of the first connection structure 3 is parallel to the first routing direction d1, and the other part is parallel to the second routing direction d2. With such a design, the intersecting area between the bridge connection lines of the first connection structure 3 and the second connection structure 4 can be minimized as much as possible, thereby reducing the parasitic capacitance between the first connection structure 3 and the second connection structure 4.

[0091] In some examples, a plurality of intersections are formed between the bridge connection lines of the first connection structure 3, and the positive projections of at least some intersections on the second connection structure 4 can overlap with the intersections of the connection grid 41 of the second connection structure 4. In actual implementation, the situation where the positive projections of at least some intersections on the second connection structure 4 overlap with the intersections of the connection grid 41 of the second connection structure 4 can be divided into the following several types.

[0092] Please refer to Figure 6 . When the first bridge structure 31 and the second bridge structure 32 are in point contact with each other, the positive projection of the common vertex (intersection point) of the polygon S1 of the first bridge structure 31 and the polygon S1 of the second bridge structure 32 on the second connection structure 4 does not overlap with the intersection point of the connection grid 41 of the second connection structure 4, and the positive projections of the other intersections formed by the bridge connection lines of the first connection structure 3 on the second connection structure 4 overlap with the intersection points of the connection grid 41 of the second connection structure 4.

[0093] Please refer to Figure 7 . When the first bridge structure 31 and the second bridge structure 32 are separated from each other, the positive projection of each intersection formed by the bridge connection lines of the first connection structure 3 on the second connection structure 4 overlaps with the intersection point of the connection grid 41 of the second connection structure 4.

[0094] Please refer to Figure 8When the first bridge structure 31 and the second bridge structure 32 intersect with each other, the orthographic projection of the intersection point of the first bridge structure 31 and the second bridge structure 32 corresponding to the overlapping area Z1 on the second connection structure 4 does not overlap with the intersection point of the connection grid 41 of the second connection structure 4, and the orthographic projections of the other intersection points formed by the bridge connection lines of the first connection structure 3 on the second connection structure 4 overlap with the intersection points of the connection grid 41 of the second connection structure 4.

[0095] Please refer to Figure 10 On the premise that the first connection structure 3 is additionally provided with a reinforcing structure 6, the orthographic projection of the intersection point shared between the bridge connection lines of the first connection structure 3 on the second connection structure 4 does not overlap with the intersection point of the connection grid 41 of the second connection structure 4, and the orthographic projection of the intersection point formed between the bridge connection line of the first connection structure 3 and the reinforcing structure 6 on the second connection structure 4 overlaps with the intersection point of the connection grid 41 of the second connection structure 4.

[0096] In the actual implementation process, the shape of the above-mentioned polygon can be a triangle or a quadrilateral, and the number of sides of the above-mentioned overlapping area can be the same as the number of sides of the polygon, which is not limited herein.

[0097] On the basis of the above, the embodiment of the present invention further provides a display panel 200, as Figure 11 shown. The display panel 200 may include pixel units 7 for emitting light. The pixel units 7 may include at least three sub-pixels of different colors, and the sub-pixels are correspondingly arranged with the sub-grids.

[0098] The display panel 200 may further include the above-mentioned touch panel 100 on one side of the pixel units 7. The orthographic projection of at least one pixel unit 7 on the touch panel 100 is located within the outer contour of the connection grid 41, or each connection grid 41 has at least one pixel unit 7. Further, the connection grid 41 may include a plurality of adjacent sub-grids, and the orthographic projections of the sub-pixels of the pixel units 7 located within the connection grid 41 on the touch panel 100 may be respectively located within the inner contours of the sub-grids.

[0099] In some examples, please refer to Figure 12 . Each pixel unit 7 may include two green sub-pixels 71, one red sub-pixel 72, and one blue sub-pixel 73. The orthographic projections of two of the green sub-pixels 71 of at least one pixel unit 7 on the touch panel 100 are respectively located within the inner contour of the first sub-grid 411, the orthographic projection of the red sub-pixel 72 on the touch panel 100 may be located within the inner contour of the second sub-grid 412, and the orthographic projection of the blue sub-pixel 73 on the touch panel 100 may be located within the inner contour of the third sub-grid 413. It can be understood that in the actual implementation, the arrangement manner of the sub-pixels may not be limited to the above manner.

[0100] Based on the same inventive concept described above, a touch panel is further provided, which includes a plurality of second electrode units distributed along a second direction. Two adjacent second electrode units are connected by a second connection structure. The second connection structure includes a plurality of connection grids and graphic units adjacent to the connection grids. The connection grids include a plurality of interconnected sub-grids, and the area of the graphic is greater than or equal to twice the area of the smallest sub-grid in the sub-grids. With such a design, by performing a graphic design on the second connection structure, partial hollowing of the second connection structure can be achieved, thereby reducing the intersection area between the second connection structure and the first connection structure. This can reduce the parasitic capacitance generated between the second connection structure and the first connection structure, and further improve or solve the influence of the bridge contact points of the touch electrodes on the touch linearity of the touch panel, ensuring better use stability of the touch panel during use.

[0101] Based on the same inventive concept described above, a touch panel is further provided, including: a plurality of first electrode units distributed along a first direction and a plurality of second electrode units distributed along a second direction. Among them, two adjacent first electrode units are connected by a first connection structure. The first connection structure includes at least two bridge structures. The two bridge structures respectively include two bridge connection lines, and the two connection bridges intersect with each other to form an overlapping area. Two adjacent second electrode units are connected by a second connection structure. The second connection structure includes a plurality of connection grids. The connection grids include a plurality of interconnected sub-grids, and the projected area of the overlapping area on the second connection structure is greater than or equal to the projected area of one sub-grid on the second connection structure.

[0102] With such a design, improvements are made to the first connection structure connecting two adjacent first electrode units and the second connection structure connecting two adjacent second electrode units, which can reduce the intersection area between the first connection structure and the second connection structure, thereby reducing the parasitic capacitance generated between the first connection structure and the second connection structure, and further improving or solving the influence of the bridge contact points of the touch electrodes on the touch linearity of the touch panel, ensuring better use stability of the touch panel during use.

[0103] In this embodiment, the manufacturing materials of the first electrode unit 1, the second electrode unit 2, the first connection structure 3, the second connection structure 4, and the reinforcement structure 6 can be indium tin oxide (ITO), metal mesh, silver nano wire, carbon nano tube (CNT), or a polymer conductive layer, etc., which are not limited herein. For example, the process used to fabricate the first electrode unit 1, the second electrode unit 2, the first connection structure 3, the second connection structure 4, and the reinforcement structure 6 on the substrate can be a photolithography manufacturing process, a screen printing manufacturing process, or other manufacturing processes, which are not limited herein.

[0104] In this embodiment, the touch panel 100 may further include signal lines electrically connected to the first electrode unit 1 and the second electrode unit 2. The signal lines are electrically connected to relevant circuits (such as a driving circuit, a touch monitoring circuit, etc.) in the touch panel 100. The signal lines can transmit the signals (such as touch signals) transmitted by the first electrode unit 1 and the second electrode unit 2 to the relevant circuits to calculate the touch position on the touch panel 100 according to the touch signals.

[0105] It can be understood that the touch panel 100 corresponding to the above embodiment can be applied to a single-layer touch design or a double-layer touch design, which is not limited herein. When the touch panel 100 is applied to a single-layer touch design, the first electrode unit 1, the second electrode unit 2, and the second connection structure 4 are designed on the same layer, and the first connection structure 3 is erected between the first electrode units 1. When the touch panel 100 is applied to a double-layer touch design, one layer may include the first electrode unit 1 and the first connection structure 3, and the other layer may include the second electrode unit 2 and the second connection structure 4. An insulating layer can be designed between the layer where the first electrode unit 1 and the first connection structure 3 are located and the layer where the second electrode unit 2 and the second connection structure 4 are located.

[0106] In summary, the embodiment of the present invention provides a touch panel 100 and a display panel 200. By improving the first connection structure 3 and the second connection structure 4, not only can the parasitic capacitance between the first connection structure 3 and the second connection structure 4 be reduced to improve the touch linearity of the touch panel 100 and the display panel 200, but also the stress resistance of the first connection structure 3 during bending can be improved to enhance the structural stability of the touch panel 100 and the display panel 200. In this way, the use stability of the touch panel 100 and the display panel 200 can be improved from two aspects of touch linearity and structural stability, ensuring that the touch panel 100 and the display panel 200 can meet the usage requirements.

[0107] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification. The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A touch panel (100), characterized in that, Comprising: A plurality of first electrode units (1) distributed along a first direction (D1); A plurality of second electrode units (2) distributed along a second direction (D2); Two adjacent first electrode units (1) are connected by a first connection structure (3), and two adjacent second electrode units (2) are connected by a second connection structure (4). An insulating layer is provided between the first connection structure (3) and the second connection structure (4); The second connection structure (4) includes a connection grid (41) and a graphic unit (42), and the connection grid (41) includes at least one sub-grid; The first connection structure (3) includes a bridging wire, and the bridging wire forms at least one polygon. Each polygon corresponds to a position of a connection grid (41), and the connection grid (41) is located within the orthographic projection of the corresponding polygon on the second connection structure (4); The orthographic projection of the bridging wire on the second connection structure (4) intersects with the graphic unit (42) to form a graphic grid identical to the connection grid (41) or at least part of the sub-grids of the connection grid (41); 2. The touch panel (100) according to claim 1, characterized in that, The orthographic projection area of the graphic unit (42) on the insulating layer is greater than or equal to twice the orthographic projection area of the smallest sub-grid in the connection grid (41) on the insulating layer; 3. The touch panel (100) according to claim 1, wherein The first connection structure (3) includes two bridging wires, and the two bridging wires are respectively broken lines and intersect each other to form at least one polygon; 4. The touch panel (100) according to claim 1, characterized in that, The first connection structure (3) includes a first bridge structure (31) and a second bridge structure (32), and the first bridge structure (31) and the second bridge structure (32) respectively include at least one polygon; 5. The touch panel (100) according to claim 4, characterized in that, The first bridge structure (31) and the second bridge structure (32) are symmetric to each other; The first bridge structure (31) and the second bridge structure (32) are connected to each other, or the first bridge structure (31) and the second bridge structure (32) are separated from each other; 6. The touch panel (100) according to claim 5, characterized in that, The first bridge structure (31) and the second bridge structure (32) are in point contact with each other; Along the second direction (D2), the vertices of the polygon of the first bridge structure (31) share the vertices of the polygon of the second bridge structure (32) that are opposite to the vertices of the polygon of the first bridge structure (31); 7. The touch panel (100) according to claim 5, characterized in that, The first bridge structure (31) and the second bridge structure (32) intersect with each other; The first bridge structure (31) and the second bridge structure (32) intersect with each other to form an overlapping area, and the orthographic projection area of the overlapping area on the second connection structure (4) is greater than or equal to the orthographic projection area of a sub-grid on the second connection structure (4); 8. A touch panel (100), characterized in that, Comprising: A plurality of first electrode units (1) distributed along a first direction (D1); A plurality of second electrode units (2) distributed along a second direction (D2); Two adjacent first electrode units (1) are connected by a first connection structure (3), and two adjacent second electrode units (2) are connected by a second connection structure (4). An insulating layer is provided between the first connection structure (3) and the second connection structure (4). The second connection structure (4) includes a connection grid (41) and a graphic unit (42). The first connection structure (3) includes a first bridge structure (31) and a second bridge structure (32). The first bridge structure (31) and the second bridge structure (32) each include two bridge connection lines. The two bridge connection lines are respectively broken lines and intersect with each other to form at least one polygon. The connection grid (41) includes sub-grids. The orthographic projection area of the graphic unit (42) on the insulating layer is greater than or equal to twice the orthographic projection area of the smallest sub-grid in the connection grid on the insulating layer. The first bridge structure (31) and the second bridge structure (32) are in point contact with each other. Along the second direction (D2), the vertices of the polygon of the first bridge structure (31) share the vertices of the polygon of the second bridge structure (32) that are opposite to the vertices of the polygon of the first bridge structure (31).

9. The touch panel (100) according to claim 8, characterized in that, The orthographic projection of the polygon on the second connection structure (4) intersects with the graphic unit (42) to form a graphic grid that is the same as the connection grid (41) or at least part of the sub-grids of the connection grid (41).

10. The touch panel (100) according to claim 1 or 8, characterized in that, The sub-grids include two first sub-grids (411) connected to each other along a third direction, and a second sub-grid (412) and a third sub-grid (413) connected to each other along a fourth direction. The orthographic projection area of the first sub-grid (411) on the insulating layer is smaller than the orthographic projection area of the second sub-grid (412) on the insulating layer. The orthographic projection area of the first sub-grid (411) on the insulating layer is smaller than the orthographic projection area of the third sub-grid (413) on the insulating layer. The orthographic projection area of the graphic unit (42) on the insulating layer is greater than or equal to twice the orthographic projection area of the first sub-grid (411) on the insulating layer. The two first sub-grids (411), the second sub-grid (412), and the third sub-grid (413) share a vertex.

11. The touch panel (100) according to claim 10, characterized in that, The first electrode unit (1) includes a plurality of first grids (11). The plurality of first grids (11) are formed by the intersection of a plurality of first metal lines. The second electrode unit (2) includes a plurality of second grids (21). The plurality of second grids (21) and the plurality of connection grids (41) are all formed by the intersection of a plurality of second metal lines. The graphic unit (42) includes a third grid formed by the intersection of the second metal lines.

12. The touch panel (100) according to claim 1 or 8, characterized in that, The first connection structure (3) further includes a reinforcing structure (6). The reinforcing structure (6) includes two reinforcing metal lines (61). One ends of the two reinforcing metal lines (61) are connected to each other, and the other ends respectively intersect with two extension lines where a vertex of the polygon is located to form a reinforcing grid.

13. A display panel (200), characterized in that, It includes pixel units (7) for emitting light. The pixel units (7) include at least three sub-pixels of different colors, and further include a touch panel (100) as described in any one of the above claims 1-12 located on one side of the pixel units (7), and the sub-grids are correspondingly arranged with the sub-pixels.

14. The display panel (200) according to claim 13, wherein The connection grid (41) includes a plurality of adjacent sub-grids, and the orthographic projection of at least one of the pixel units (7) on the touch panel (100) is located within the outer contour of the connection grid (41); The orthographic projections of the sub-pixels of the pixel unit (7) whose orthographic projection is located within the outer contour of the connection grid (41) on the touch panel (100) are respectively located within the inner contours of the sub-grids.

15. The display panel (200) according to claim 14, wherein The pixel unit (7) whose orthographic projection is located within the outer contour of the connection grid (41) includes two green sub-pixels (71), one red sub-pixel (72), and one blue sub-pixel (73); the connection grid (41) includes two first sub-grids (411) connected to each other along a third direction, and a second sub-grid (412) and a third sub-grid (413) connected to each other along a fourth direction; The orthographic projections of the two green sub-pixels (71) on the touch panel (100) are respectively located within the inner contours of the two first sub-grids (411), the orthographic projection of the red sub-pixel (72) on the touch panel (100) is located within the inner contour of the second sub-grid (412), and the orthographic projection of the blue sub-pixel (73) on the touch panel (100) is located within the inner contour of the third sub-grid (413).

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