Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a display area and a first non-display area. The first non-display area is arranged along a first direction with the display area. The first non-display area comprises a bonding area. In the display area, a first touch electrode extends along a second direction. A plurality of first touch electrodes are arranged along the first direction. A second touch electrode extends along the first direction. A plurality of second touch electrodes are arranged along the second direction. A first touch signal line extends along the first direction. The first touch signal line is electrically connected with the first touch electrode. The same first touch electrode comprises a plurality of first electrode parts and a plurality of first connecting parts. The first electrode part extends along the first direction. The first connecting part extends along the second direction. The first electrode part and the first connecting part are alternately arranged along the second direction. The first touch signal line is located between two adjacent first electrode parts. The application can ensure the touch sensitivity of the display panel and realize the narrow frame of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] In the field of display technology, display panels typically integrate touch functionality to enhance the intuitiveness, convenience, and overall performance of human-computer interaction. Currently, display panels usually include touch electrodes and touch signal lines. The touch electrodes are connected to a touch chip via the touch signal lines, thereby enabling touch control of the display panel.

[0003] However, in existing technologies, at least some touch signal lines are located at the edge of the display panel. This occupies space on the display panel's bezel, hindering the design of narrow bezels. Furthermore, in the presence of water or oxygen, the touch signal lines located at the edge of the display panel are easily corroded, affecting touch performance. Therefore, a solution is urgently needed. Summary of the Invention

[0004] In view of this, embodiments of this application provide a display panel and a display device to solve the above problems.

[0005] In a first aspect, embodiments of this application provide a display panel, including a display area and a non-display area surrounding the display area. The non-display area includes a first non-display area located on one side of the display area. The first non-display area and the display area are arranged along a first direction. The first non-display area includes a bonding area, and a touch chip is bonded to the bonding area. The display area includes: Substrate; Multiple first touch electrodes extend along a second direction, and the multiple first touch electrodes are arranged along a first direction, where the first direction intersects the second direction; Multiple second touch electrodes, the second touch electrodes extending along a first direction, and the multiple second touch electrodes arranged along a second direction; Multiple first touch signal lines, each extending along a first direction, are electrically connected to a corresponding first touch electrode. The same first touch electrode includes multiple first electrode portions and multiple first connection portions. The first electrode portions extend along a first direction, and the first connection portions extend along a second direction. The first electrode portions and the first connection portions are arranged alternately in the second direction, and the first touch signal line is located between two adjacent first electrode portions.

[0006] In one implementation of the first aspect, the same second touch electrode includes a plurality of second electrode portions and a plurality of second connecting portions, and two adjacent second electrode portions in a first direction are electrically connected through the second connecting portions; the first electrode portion includes a first main electrode, a second main electrode and a first bridge, one end of the first bridge is connected to the first main electrode and the other end is connected to the second main electrode; wherein, the second electrode portion is located between the first main electrode and the second main electrode of the same first electrode portion.

[0007] In one implementation of the first aspect, the second electrode portion includes a third main electrode, a fourth main electrode, and a second bridge. One end of the second bridge is connected to the third main electrode, and the other end is connected to the fourth main electrode. The first main electrode, the second main electrode, the third main electrode, and the fourth main electrode are on the same layer. The second bridge and the first bridge are disposed on different layers, and the first bridge and the second bridge overlap along a direction perpendicular to the plane of the substrate.

[0008] In one implementation of the first aspect, the first bridge is on the same layer as the first main electrode, and the first touch signal line is on the same layer as the second bridge.

[0009] In one implementation of the first aspect, the display area includes a dummy electrode, which includes a first dummy electrode portion located between two adjacent first electrode portions; wherein, the first touch signal line is connected in parallel with the first dummy electrode portion.

[0010] In one implementation of the first aspect, both the first touch signal line and the first dummy electrode portion are grid-shaped, and in a direction perpendicular to the plane of the substrate, at least a portion of the grid of the first touch signal line overlaps with the grid of the first dummy electrode.

[0011] In one implementation of the first aspect, the first touch signal line is a grid structure, the first touch signal line includes a first grid and a second grid, and along the direction perpendicular to the plane of the substrate, the first grid overlaps with the first connection portion or the second connection portion, and the second grid does not overlap with either the first connection portion or the second connection portion; wherein, the area of ​​the first grid is larger than the area of ​​the second grid.

[0012] In one implementation of the first aspect, the first connecting portion is a mesh structure, which includes a third mesh and a fourth mesh. Along a direction perpendicular to the plane of the substrate, the third mesh overlaps with the first touch signal line, while the fourth mesh does not overlap with the first touch signal line; wherein the area of ​​the third mesh is larger than the area of ​​the fourth mesh.

[0013] In one implementation of the first aspect, second electrode portions and second connecting portions are arranged alternately in a first direction; wherein i adjacent second electrode portions in the second direction are electrically connected to the same second connecting portion, where i is a positive integer, 1≤i≤4.

[0014] In one implementation of the first aspect, a first electrode portion and a second electrode portion located between two adjacent second connecting portions form a touch unit, and a plurality of touch units arranged along a first direction form a touch unit column; wherein, in at least a portion of the touch unit columns, a plurality of first touch signal lines are provided.

[0015] In one implementation of the first aspect, multiple first touch signal lines are evenly distributed in the second direction.

[0016] In one implementation of the first aspect, the first electrode portion is shaped like an "H".

[0017] Secondly, based on the same inventive concept, embodiments of this application provide a display device, including the display panel as provided in the first aspect.

[0018] In this embodiment, the first touch signal line, which is electrically connected to the first touch electrode, is placed in the display area. This prevents the first touch signal line from occupying the bezel area of ​​the display panel, thus reducing the bezel width and enabling a narrow bezel design. Furthermore, since the first touch signal line is located in the display area, it is far from the edge of the display panel. Therefore, even if external water or oxygen only penetrates the bezel, it is less susceptible to corrosion, improving the reliability of the touch function.

[0019] Furthermore, by positioning the first touch signal line between two adjacent first electrode portions, the overlap area between the first touch signal line and the first touch electrode can be reduced, which helps to reduce the parasitic capacitance between the first touch signal line and the first touch electrode, thereby improving the reliability of the signal transmission of the first touch signal line and thus improving the touch performance of the display panel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a display panel in related technologies; Figure 2 A schematic diagram of a display panel provided in an embodiment of this application; Figure 3 for Figure 2 An enlarged schematic diagram of the central region Q1; Figure 4 for Figure 3 A schematic diagram of a cross section along the tangent AA' in the middle; Figure 5 This is a schematic diagram of a first touch signal line provided in an embodiment of this application; Figure 6 A schematic diagram of yet another first touch signal line provided in an embodiment of this application; Figure 7 A schematic diagram of yet another first touch signal line provided in an embodiment of this application; Figure 8 for Figure 2 Another enlarged schematic diagram of the central region Q1; Figure 9 This application provides a schematic diagram illustrating the connection between a first touch signal line and a first dummy electrode in an embodiment of the present application. Figure 10 for Figure 3 An enlarged schematic diagram of the central region Q2; Figure 11 for Figure 3 An enlarged schematic diagram of the central region Q3; Figure 12 for Figure 3 Another enlarged schematic diagram of the central region Q2; Figure 13 for Figure 3 Another enlarged schematic diagram of the central region Q3; Figure 14 A schematic diagram of yet another display panel provided in an embodiment of this application; Figure 15 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0022] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0024] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this article generally indicates that the related objects before and after it have an "or" relationship.

[0026] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0027] Figure 1 This is a schematic diagram of a display panel in the related technology.

[0028] In related technologies, such as Figure 1 As shown, the display panel 01' includes a display area AA' and a non-display area NA'. The non-display area NA' surrounds the display area AA'. The non-display area NA' includes a first non-display area NA1' located on one side of the display area AA'. The first non-display area NA1' is used to bond the touch chip TPIC'. The first non-display area NA1' can be the bottom bezel of the display panel 01'.

[0029] The display area AA' includes multiple first touch electrodes 11' and multiple second touch electrodes 12'. The first touch electrodes 11' extend along a first direction X', and the multiple first touch electrodes 11' are arranged along a second direction Y'. The second touch electrodes 12' extend along the second direction Y', and the multiple second touch electrodes 12' are arranged along the first direction X'. The first direction X' and the second direction Y' intersect. The first direction X' can be a row direction in the display panel 01', and the second direction Y' can be a column direction in the display panel 01'.

[0030] The display panel 01' also includes multiple first touch signal lines 21' and multiple second touch signal lines 22'. The first touch signal lines 21' are electrically connected to the first touch electrode 11', and the second touch signal lines 22' are electrically connected to the second touch electrode 12'. Both the first touch signal lines 21' and the second touch signal lines 22' extend into the first non-display area NA1' and are electrically connected to the touch chip TPIC'. The touch chip TPIC' can send touch driving signals through one of the first touch signal lines 21' and the second touch signal lines 22', and receive touch sensing signals through the other, thereby realizing the touch driving of the display panel 01'.

[0031] The non-display area NA' also includes a second non-display area NA2' and a third non-display area MA3'. The second non-display area NA2' and the third non-display area MA3' are located on opposite sides of the display area AA'. The second non-display area NA2' can be the left border of the display panel 01', and the third non-display area NA3' can be the right border of the display panel 01'.

[0032] At least a portion of the first touch signal line 21' is located in the second non-display area NA2', and at least a portion of the first touch signal line 21' is located in the third non-display area NA3'.

[0033] The inventors of this application have discovered through research that, in related technologies, placing part of the first touch signal line 21' in the second non-display area NA2' and part of the first touch signal line 21' in the third non-display area NA3' results in the first touch signal line 21' occupying the bezel area of ​​the display panel 01', which is detrimental to achieving a narrow bezel for the display panel 01'. Furthermore, the first touch signal line 21' located in the bezel area of ​​the display panel 01' is relatively close to the edge of the display panel 01', making it susceptible to corrosion by water and oxygen when these elements penetrate the display panel 01', thus affecting the reliability of the touch input.

[0034] In view of this, embodiments of this application provide a solution to address the problems in the related art.

[0035] Figure 2 This is a schematic diagram of a display panel provided in an embodiment of this application.

[0036] This application embodiment provides a display panel 01, such as Figure 2 As shown, the display panel 01 includes a display area AA and a non-display area NA surrounding the display area AA. The non-display area NA includes a first non-display area NA1 located on one side of the display area AA. The first non-display area NA1 and the display area AA are arranged along a first direction Y. The first non-display area NA1 includes a bonding area BD, on which a touch chip TPIC is bonded. The touch chip TPIC is used to provide touch signals to the display area AA. The first non-display area NA1 may be the "bottom" bezel of the display panel 01.

[0037] In addition, the bonding area BD can also be used to bond the driver chip, which provides display signals to the display area AA. Of course, the driver chip and the touch chip can also be integrated together to form an integrated chip, which can provide both display signals and touch signals to the display area AA.

[0038] The display area AA includes a substrate 10, a plurality of first touch electrodes 11 and a first second touch electrode 12. The first touch electrodes 11 and the second touch electrodes 12 are located on the same side of the substrate 10. The first touch electrodes 11 extend along the second direction X, and the plurality of first touch electrodes 11 are arranged along the first direction Y. The first direction Y intersects with the second direction X.

[0039] For example, such as Figure 2 As shown in the embodiment of this application, the first direction Y is the column direction of the display panel 01, and the second direction X is the row direction of the display panel 01.

[0040] The second touch electrode 12 extends along the first direction Y, and a plurality of second touch electrodes 12 are arranged along the second direction X. In the direction perpendicular to the plane of the substrate 10, the second touch electrode 12 and the first touch electrode 11 may overlap. The display panel 01 provided in this embodiment can adopt a mutual capacitance touch detection method.

[0041] The display area AA also includes multiple first touch signal lines 21. The first touch signal lines 21 extend along the first direction Y and are arranged along the second direction X. The first touch signal lines 21 are electrically connected to the first touch electrode 11.

[0042] For example, such as Figure 2 As shown, the first touch signal line 21 is electrically connected to the first touch electrode 11 in a one-to-one correspondence, and the first touch electrode 11 can be electrically connected to the touch chip TPIC through the first touch signal line 21.

[0043] In addition, the display area AA may also include a second touch signal line 22, which extends along the first direction Y, and multiple second touch signal lines 22 are arranged along the second direction X. The second touch signal lines 22 are electrically connected to the second touch electrode 12, and the second touch electrode 12 can be electrically connected to the touch chip through the second touch signal lines 22.

[0044] Since both the second touch electrode 12 and the second touch signal line 22 extend along the first direction Y, the second touch signal line 22 can be positioned on the side of the second touch electrode 12 close to the first non-display area NA1 to reduce the length of the second touch signal line 22.

[0045] Combination Figure 3 As shown, Figure 3 for Figure 2An enlarged schematic diagram of the central region Q1 shows that the same first touch electrode 11 includes multiple first electrode portions 11A and multiple first connecting portions 11B. The first electrode portions 11A extend along the first direction Y, and the first connecting portions 11B extend along the second direction X. The first electrode portions 11A and the first connecting portions 11B are arranged alternately in the second direction X, and two adjacent first electrode portions 11A can be electrically connected through the first connecting portions 11B.

[0046] The first touch signal line 21 is located between two adjacent first electrode portions 11A. The first touch signal line 21 can be connected to the first connecting portion 11B through a hole, thereby realizing the electrical connection between the first touch signal line 21 and the first touch electrode 11.

[0047] In this embodiment, the first touch signal line 21, which is electrically connected to the first touch electrode 11, is disposed in the display area AA. Therefore, the first touch signal line 21 will not occupy the bezel area of ​​the display panel 01, which helps to reduce the bezel width of the display panel 01, thereby facilitating the achievement of a narrow bezel for the display panel 01. Furthermore, the first touch signal line 21 located in the display area AA, relative to... Figure 1 The first touch signal line 21' in the related technology shown is far from the edge of the display panel 01. When external water and oxygen only penetrate into the frame of the display panel 01, it is not easily corroded, which helps to improve the reliability of the display panel 01 in realizing the touch function.

[0048] Furthermore, in this embodiment, the first touch signal line 21 is located between two adjacent first electrode portions 11A, which can reduce the overlap area between the first touch signal line 21 and the first touch electrode 11. This helps to reduce the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11, thereby improving the reliability of the signal transmitted by the first touch signal line 21 and thus improving the touch performance of the display panel 01.

[0049] Please continue to combine Figure 2 and Figure 3 In one embodiment of this application, the same second touch electrode 12 includes a plurality of second electrode portions 12A and a plurality of second connecting portions 12B. In the first direction Y, the second electrode portions 12A and the second connecting portions 12B can be arranged alternately. Two adjacent second electrode portions 12A in the first direction Y are electrically connected through the second connecting portions 12B.

[0050] The first electrode section 11A includes a first main electrode 11A1, a second main electrode 11A2, and a first bridge 11A3. One end of the first bridge 11A3 is electrically connected to the first main electrode 11A1, and the other end is electrically connected to the second main electrode 11A2.

[0051] For example, such as Figure 3As shown, the first main electrode 11A1 and the second main electrode 11A2 both extend along the first direction Y, the first bridge 11A3 extends along the second direction X, and the shape of the first electrode portion 11A is "H".

[0052] The second electrode portion 12A is located between the first main electrode 11A1 and the second main electrode 11A2 of the same first electrode portion 11A.

[0053] In other words, in the second direction X, the second electrode portion 12A of the second touch electrode 12 can be surrounded by the first electrode portion 11A of the first touch electrode.

[0054] Optionally, the second electrode portion 12A overlaps with the first bridge 11A3 along a direction perpendicular to the plane of the substrate 10. In this way, the second electrode portion 12A can extend through the first bridge 11A3 along the first direction Y, which facilitates the connection between the second electrode portion 12A and the second connecting portion 12B and avoids interference between the arrangement of the second touch electrode 12 and the first touch electrode 11.

[0055] In this embodiment, the second electrode portion 12A is located between the first main electrode 11A1 and the second main electrode 11A2 of the same first electrode portion 11A. Therefore, in the second direction X, the second electrode portion 12A can be located inside the area surrounded by the first electrode portion 11A. This allows the second electrode portion 12A to be closer to the first electrode portion 11A, which helps to increase the mutual capacitance between the first touch electrode 11 and the second touch electrode 12, thereby improving the touch sensitivity of the display panel 01. Furthermore, in the direction perpendicular to the plane of the substrate 10, the first touch signal line 21 located between two adjacent first electrode portions 11A can be non-overlapping with the second electrode portion 12A of the second touch electrode 12, which helps to reduce the parasitic capacitance between the first touch signal line 21 and the second touch electrode 12, thereby further improving the reliability of the signal transmitted by the first touch signal line 21, and consequently further improving the touch performance of the display panel 01.

[0056] Figure 4 for Figure 3 A schematic diagram of a cross section along the tangent AA'.

[0057] In one embodiment of this application, combined with Figure 3 and Figure 4As shown, the second electrode section 12A includes a third main electrode 12A1, a fourth main electrode 12A2, and a second bridge 12A3. The third main electrode 12A1 and the fourth main electrode 12A2 can both extend along the first direction Y. One end of the second bridge 12A3 is electrically connected to the third main electrode 12A1, and the other end is electrically connected to the fourth main electrode 12A2. The first main electrode 11A1, the second main electrode 11A2, the third main electrode 12A1, and the fourth main electrode 12A2 are in the same layer.

[0058] The second bridge 12A3 and the first bridge 11A3 are disposed in different layers, and the first bridge 11A3 and the second bridge 12A3 overlap along the direction Z perpendicular to the plane of the substrate 10.

[0059] In this embodiment, the first main electrode 11A1 and the second main electrode 11A2 in the first electrode section 11A are all in the same layer as the third main electrode 12A1 and the fourth main electrode 12A2 in the second electrode section 12A. Therefore, the first main electrode 11A1, the second main electrode 11A2, the third main electrode 12A1 and the fourth main electrode 12A2 can be prepared with the same material and process, which helps to simplify the process and reduce the manufacturing cost of the display panel 01.

[0060] Furthermore, setting the first main electrode 11A1, the second main electrode 11A2, the third main electrode 12A1, and the fourth main electrode 12A2 in the same layer helps to avoid electrode alignment deviation problems that are prone to occur when multiple layers are set, and helps to reduce parasitic capacitance and improve touch sensitivity.

[0061] Meanwhile, setting the second bridge 12A3 and the first bridge 11A3 in different layers facilitates the extension of the first touch electrode 11 and the second touch electrode 12 in different directions, avoiding interference between the arrangement of the first touch electrode 11 and the second touch electrode 12.

[0062] Optional, such as Figure 4 As shown, the first bridge 11A3 is on the same layer as the first main electrode 11A1, and the first touch signal line 21 is on the same layer as the second bridge 12A3. This results in fewer traces on the film layer containing the second bridge 12A3, which facilitates the fabrication of the first touch signal line 21.

[0063] For example, such as Figure 4 As shown, the first touch signal line 21 is on the same layer as the second bridge 12A3, and the first bridge 11A3 is located on the side of the second bridge 12A3 away from the substrate 10.

[0064] Based on this configuration, the first touch signal line 21 can be located on the side of the film layer where the first electrode part 11A is located facing the substrate 10. During the touch process of the display panel 01, it is beneficial to reduce the interference of the first touch signal line 21 on the mutual capacitive coupling between the first touch electrode 11 and the second touch electrode 12, thereby improving the reliability of touch.

[0065] Furthermore, in one embodiment of this application, the first connecting portion 11B in the first touch electrode 11 and the second connecting portion 12B in the second touch electrode 12 can both be on the same layer as the first main electrode 11A1. This helps to further reduce the number of traces in the film layer where the second bridge 12A3 is located, thereby facilitating the fabrication of the first touch signal line 21.

[0066] Figure 5 This is a schematic diagram of a first touch signal line provided in an embodiment of this application.

[0067] like Figure 5 As shown, in one embodiment of this application, the first touch signal line 21 is in the shape of a broken line.

[0068] In this embodiment, the first touch signal line 21 is shaped like a broken line. This serves two purposes: firstly, it allows the first touch signal line 21 to avoid the sub-pixel area in the display area AA, thus preventing it from blocking the light emitted by the sub-pixels. Secondly, it reduces the area occupied by the first touch signal line 21, thereby decreasing the overlap area between the first touch signal line and the first touch electrode 11 and the second touch electrode 12. This reduces the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 and the second touch electrode 12, improving the accuracy of the signal transmission from the first touch signal line 21.

[0069] In yet another embodiment of this application, as Figure 6 and Figure 7 As shown, Figure 6 This is a schematic diagram of yet another first touch signal line provided in an embodiment of this application. Figure 7 This is a schematic diagram of another first touch signal line provided in an embodiment of this application. The first touch signal line 21 is in the shape of a grid.

[0070] In this embodiment, setting the first touch signal line 21 to a grid shape helps to reduce the impedance of the first touch signal line 21, thereby reducing the signal delay on the first touch signal line 21 and improving the accuracy of the signal transmission of the first touch signal line 21.

[0071] in, Figure 7 The first touch signal line 21 shown is Figure 6 The difference in the first touch signal line 21 shown is that... Figure 7 The width W1 of the first touch signal line 21 is greater than Figure 6 The width W2 of the first touch signal line 21. Of course, Figure 7 The grid density in the first touch signal line 21 is not less than Figure 6 The grid density of the first touch signal line 21.

[0072] For example, in Figure 6 In the middle, the first touch signal line 21 can be composed of two parallel broken lines. Figure 7 In the middle, the first touch signal line 21 can be composed of four zigzag lines connected in parallel.

[0073] It should be noted that the width of the first touch signal line 21 is relatively large. Although this can reduce the impedance of the first touch signal line 21, it may increase the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 and the second touch electrode 12. Therefore, in this embodiment, the first touch signal line 21 can be configured as a grid, consisting of 2-6 parallel broken lines. This reduces the impedance of the first touch signal line 21 and avoids excessively increasing the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 and the second touch electrode 12, thereby significantly improving the touch performance of the display panel 01.

[0074] Figure 8 for Figure 2 Another enlarged schematic diagram of the central region Q1.

[0075] In one embodiment of this application, combined with Figure 2 and Figure 8 As shown, the display area AA also includes a dummy electrode DUM, which is on the same layer as the first main electrode 11A1, meaning that the dummy electrode DUM can be located on the side of the first touch signal line 21 away from the substrate 10.

[0076] The dummy electrode DUM includes a first dummy electrode portion DUM1, which is located between two adjacent first electrode portions 11A. Along a direction perpendicular to the plane of the substrate 10, the first dummy electrode portion DUM1 overlaps with the first touch signal line 21.

[0077] The first touch signal line 21 is connected in parallel with the first dummy electrode section DUM1.

[0078] In this embodiment, the first touch signal line 21 is connected in parallel with the first dummy electrode portion DUM1. In the direction perpendicular to the plane of the substrate 10, the impedance of the first touch signal line 21 can be reduced without increasing the overlap area between the first touch signal line 21 and the first touch electrode 11 and the second touch electrode 12, which is beneficial to further improve the accuracy of the signal transmitted by the first touch signal line 21.

[0079] For example, such as Figure 9 As shown, Figure 9 This is a schematic diagram illustrating the connection between a first touch signal line and a first dummy electrode according to an embodiment of this application. Both the first dummy electrode portion DUM1 and the first touch signal line 21 are mesh-like. In a direction perpendicular to the plane of the substrate 10, at least a portion of the mesh of the first touch signal line 21 overlaps with the mesh of the first dummy electrode portion DUM1. The first touch signal line 21 can be electrically connected to the first dummy electrode portion DUM1 through a via K1. Of course, multiple vias K1 can be provided between the first touch signal line 21 and the first dummy electrode portion DUM1 to improve their electrical connection performance.

[0080] The first dummy electrode portion DUM1 and the first touch signal line 21 are both grid-shaped. This design avoids interfering with the light emission of sub-pixels in the display area AA. It also helps to further reduce the impedance of the first touch signal line 21, improving its signal transmission performance. Furthermore, by ensuring that at least a portion of the grid of the first touch signal line 21 overlaps with the grid of the first dummy electrode portion DUM1, the reflection of external light by the first dummy electrode portion DUM1 and the first touch signal line 21 as a whole is reduced, thus improving the display contrast of the display panel 01.

[0081] Figure 10 for Figure 3 An enlarged schematic diagram of region Q2 in the middle area. Figure 11 for Figure 3 An enlarged schematic diagram of the central region Q3.

[0082] In one embodiment of this application, combined with Figure 10 and Figure 11 As shown, the first touch signal line 21 has a grid structure, which includes a first grid 211 and a second grid 212. Along the direction perpendicular to the plane of the substrate 10, the first grid 211 overlaps with the first connecting portion 11B or the second connecting portion 12B, while the second grid 212 does not overlap with either the first connecting portion 11B or the second connecting portion 12B.

[0083] The area of ​​the first grid 211 is larger than the area of ​​the second grid 212. Here, the area of ​​the first grid 211 refers to the area enclosed by the first grid 211, and the area of ​​the second grid 212 refers to the area enclosed by the second grid 212.

[0084] It should be noted that, Figure 11 The diagram illustrates the overlap between the first grid 211 and the first connecting part 11B. Figure 12 The diagram illustrates the overlap between the first grid 211 and the second connecting portion 12B. Within the same first touch signal line 21, a portion of the first grid 211 may overlap with the first connecting portion 11B, and a portion of the first grid 211 may overlap with the second connecting portion 12B.

[0085] In this embodiment, the area of ​​the first grid 211 is relatively large. Therefore, in the direction perpendicular to the plane of the substrate 10, when the first grid 211 overlaps with the first connecting portion 11B, the number of first grids 211 overlapping with the first connecting portion 11B is reduced. This helps to reduce the overlapping area between the first touch signal line 21 and the first touch electrode 11, thereby reducing the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 and improving the touch performance of the display panel.

[0086] In the direction perpendicular to the plane of the substrate 10, when the first grid 211 overlaps with the second connection portion 12B, the number of first grids 211 overlapping with the second connection portion 12B is reduced, which helps to reduce the overlap area between the first touch signal line 21 and the second touch electrode 12, thereby helping to reduce the parasitic capacitance between the first touch signal line 21 and the second touch electrode 12.

[0087] Figure 12 for Figure 3 Another enlarged schematic diagram of the central region Q2.

[0088] In one embodiment of this application, such as Figure 12 As shown, the first connecting part 11B has a mesh structure, which includes a third mesh 11B1 and a fourth mesh 11B2. Along the direction perpendicular to the plane of the substrate 10, the third mesh 11B1 overlaps with the first touch signal line 21, while the fourth mesh 11B2 does not overlap with the first touch signal line 21.

[0089] The area of ​​the third grid 11B1 is greater than the area of ​​the fourth grid 11B2. Here, the area of ​​the third grid 11B1 refers to the area enclosed by the third grid 11B1, and the area of ​​the fourth grid 11B2 refers to the area enclosed by the fourth grid 11B2.

[0090] In this embodiment, the area of ​​the third grid 11B1 is relatively large. Therefore, in the direction perpendicular to the plane of the substrate 10, the number of third grids 11B1 overlapping the first touch signal line 21 is smaller. This helps to reduce the overlapping area between the first touch signal line 21 and the first touch electrode 11, thereby reducing the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 and improving the touch performance of the display panel 01.

[0091] Of course, such as Figure 12 As shown, in the direction perpendicular to the plane of the substrate 10, the third grid 11B1 can overlap with the first grid 211 in the first touch signal line 21, so as to reduce the overlap area between the first touch signal line 21 and the first touch electrode 11 to a large extent, thereby reducing the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11 to a large extent.

[0092] Figure 13 for Figure 3 Another enlarged schematic diagram of the central region Q3.

[0093] In one embodiment of this application, such as Figure 13 As shown, the second connecting part 12B has a mesh structure, which includes a fifth mesh 12B1 and a sixth mesh 12B2. Along the direction perpendicular to the plane of the substrate 10, the fifth mesh 12B1 overlaps with the first touch signal line 21, while the sixth mesh 12B2 does not overlap with the first touch signal line 21.

[0094] The area of ​​the fifth grid 12B1 is greater than the area of ​​the sixth grid 12B2. Here, the area of ​​the fifth grid 12B1 refers to the area enclosed by the fifth grid 12B1, and the area of ​​the sixth grid 12B2 refers to the area enclosed by the sixth grid 12B2.

[0095] In this embodiment, the area of ​​the fifth grid 12B1 is relatively large. Therefore, in the direction perpendicular to the plane of the substrate 10, the number of fifth grids 12B1 overlapping the first touch signal line 21 is smaller. This helps to reduce the overlapping area between the first touch signal line 21 and the second touch electrode 12, thereby reducing the parasitic capacitance between the first touch signal line 21 and the second touch electrode 12 and improving the touch performance of the display panel 01.

[0096] Of course, such as Figure 13 As shown, in the direction perpendicular to the plane of the substrate 10, the fifth grid 12B1 can overlap with the first grid 211 in the first touch signal line 21, so as to reduce the overlap area between the first touch signal line 21 and the second touch electrode 12 to a large extent, thereby reducing the parasitic capacitance between the first touch signal line 21 and the second touch electrode 12 to a large extent.

[0097] In one embodiment of this application, combined with Figure 2 and Figure 3 As shown, in the first direction Y, the second electrode portion 12A and the second connecting portion 12B are arranged alternately in the same second touch electrode 12.

[0098] Among them, i adjacent second electrode portions 12A in the second direction X are electrically connected to the same second connecting portion 12B, where i is a positive integer, 1≤i≤4.

[0099] In other words, between two adjacent second connecting portions 12B in the first direction Y, i second electrode portions 12A can be provided, and these i second electrode portions 12A belong to the same second touch electrode 12.

[0100] Since the second electrode portion 12A is disposed between the first main electrode 11A1 and the second main electrode 11A2 of the first electrode portion 11A, i first electrode portions 11A may also be included between two adjacent second connecting portions 12B in the first direction Y. The first electrode portion 11A and the second electrode portion 12A located between two adjacent second connecting portions 12B can form a touch unit TR, and the touch unit TR is the smallest recognizable unit for detecting touch.

[0101] In this embodiment, setting 1≤i≤4 ensures that the area of ​​a single touch unit TR is not too large, which is beneficial to increasing the density of touch units TR in the display panel 01, thereby improving the touch precision of the display panel 01.

[0102] Please continue to refer to this. Figure 2 In one embodiment of this application, multiple first touch signal lines 21 are arranged along a second direction X, and the multiple first touch signal lines 21 are evenly distributed in the second direction X.

[0103] In this embodiment, multiple first touch signal lines 21 are evenly distributed in the second direction X. This is beneficial because it allows touch units TR at more locations in the display area AA to overlap with the first touch signal lines 21, thereby improving the uniformity of the electrical parameters of touch units TR at different locations in the display area AA, and thus improving the uniformity of touch performance at different locations in the display area AA.

[0104] Figure 14 This is a schematic diagram of another display panel provided in an embodiment of this application.

[0105] In one embodiment of this application, such as Figure 14As shown, in the first direction Y, the first electrode portion 11A and the second electrode portion 12A located between two adjacent second connecting portions 12B form a touch unit TR, and the multiple touch units TR arranged along the first direction Y form a touch unit column TRL.

[0106] In particular, in at least a portion of the touch unit column TRL, multiple first touch signal lines 21 are provided.

[0107] In this embodiment, multiple first touch signal lines 21 are provided in at least a portion of the touch unit columns TRL, which makes it possible for the first touch signal lines 21 to be distributed more concentratedly in the display area AA. This helps the first touch signal lines 21 to avoid the main touch area in the display area AA, reduces the parasitic capacitance between the first touch signal lines 21 and the touch units TR in the main touch area, and thus helps to improve the touch performance of the main touch area in the display area AA.

[0108] Optional, such as Figure 14 As shown, the display area AA includes a central area A1 and an edge area A2, with the edge area A2 located on the side of the central area A1 closest to the edge of the display panel 01. The display area AA may include one central area A1 and two edge areas A2, with the two edge areas A2 located on opposite sides of the central area A1.

[0109] Among them, at least part of the touch unit column TRL located in the edge region A2 is provided with multiple first touch signal lines 21.

[0110] The touch frequency of the touch unit TR in the edge region A2 is usually lower than that of the touch unit TR in the middle region A1. If multiple first touch signal lines 21 are set in the touch unit column TRL located in the edge region A2, then it is not necessary to set the first touch signal lines 21 in the middle region A1. This helps to reduce the parasitic capacitance between the touch unit TR and the first touch signal lines 21 in the middle region A1, thereby improving the touch performance of the middle region A1.

[0111] Figure 15 This is a schematic diagram of a display device provided in an embodiment of this application.

[0112] This application provides a display device 02, such as... Figure 15 As shown, the display device 02 includes the display panel 01 as provided in the above embodiments. Exemplarily, the display device 02 can be an electronic device such as a mobile phone, computer, television, vehicle display, or wearable display; this application does not impose any specific limitations.

[0113] In the display device 02, the first touch signal line 21, which is electrically connected to the first touch electrode 11, is placed in the display area AA. This means the first touch signal line 21 will not occupy the bezel area of ​​the display panel 01, which helps to reduce the bezel width of the display panel 01, thus facilitating a narrow bezel design. Furthermore, the first touch signal line 21 located in the display area AA, relative to... Figure 1 The first touch signal line 21' in the related technology shown is far from the edge of the display panel 01. When external water and oxygen only penetrate into the frame of the display panel 01, it is not easily corroded, which helps to improve the reliability of the display panel 01 in realizing the touch function.

[0114] Furthermore, in this embodiment, the first touch signal line 21 is located between two adjacent first electrode portions 11A, which can reduce the overlap area between the first touch signal line 21 and the first touch electrode 11. This helps to reduce the parasitic capacitance between the first touch signal line 21 and the first touch electrode 11, thereby improving the reliability of the signal transmitted by the first touch signal line 21 and thus improving the touch performance of the display panel 01.

[0115] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, It includes a display area and a non-display area surrounding the display area. The non-display area includes a first non-display area located on one side of the display area. The first non-display area is arranged with the display area along a first direction. The first non-display area includes a bonding area, and a touch chip is bonded to the bonding area. The display area includes: Substrate; A plurality of first touch electrodes are provided, the first touch electrodes extending along a second direction, the plurality of first touch electrodes being arranged along the first direction, the first direction intersecting the second direction; A plurality of second touch electrodes, the second touch electrodes extending along the first direction, and the plurality of second touch electrodes arranged along the second direction; Multiple first touch signal lines, each extending along the first direction, and each first touch signal line being electrically connected to a corresponding first touch electrode; The first touch electrode includes multiple first electrode portions and multiple first connection portions. The first electrode portions extend along the first direction, and the first connection portions extend along the second direction. The first electrode portions and the first connection portions are arranged alternately in the second direction, and the first touch signal line is located between two adjacent first electrode portions.

2. The display panel according to claim 1, characterized in that, The same second touch electrode includes multiple second electrode portions and multiple second connection portions, and two adjacent second electrode portions in the first direction are electrically connected through the second connection portions; The first electrode portion includes a first main electrode, a second main electrode, and a first bridge, wherein one end of the first bridge is connected to the first main electrode and the other end is connected to the second main electrode; The second electrode portion is located between the first main electrode and the second main electrode of the same first electrode portion.

3. The display panel according to claim 2, characterized in that, The second electrode portion includes a third main electrode, a fourth main electrode, and a second bridge. One end of the second bridge is connected to the third main electrode, and the other end is connected to the fourth main electrode. The first main electrode, the second main electrode, the third main electrode, and the fourth main electrode are in the same layer. The second bridge and the first bridge are disposed in different layers, and the first bridge and the second bridge overlap along a direction perpendicular to the plane of the substrate.

4. The display panel according to claim 3, characterized in that, The first bridge is on the same layer as the first main electrode, and the first touch signal line is on the same layer as the second bridge.

5. The display panel according to claim 1, characterized in that, The display area includes a dummy electrode, and the dummy electrode includes a first dummy electrode portion, which is located between two adjacent first electrode portions; The first touch signal line is connected in parallel with the first dummy electrode section.

6. The display panel according to claim 5, characterized in that, Both the first touch signal line and the first dummy electrode portion are grid-shaped. In a direction perpendicular to the plane of the substrate, at least a portion of the grid of the first touch signal line overlaps with the grid of the first dummy electrode.

7. The display panel according to claim 2, characterized in that, The first touch signal line has a grid structure, including a first grid and a second grid. Along the direction perpendicular to the plane of the substrate, the first grid overlaps with the first connection portion or the second connection portion, and the second grid does not overlap with either the first connection portion or the second connection portion. The area of ​​the first grid is greater than the area of ​​the second grid.

8. The display panel according to claim 1, characterized in that, The first connecting portion is a mesh structure, which includes a third mesh and a fourth mesh. Along a direction perpendicular to the plane of the substrate, the third mesh overlaps with the first touch signal line, and the fourth mesh does not overlap with the first touch signal line. The area of ​​the third grid is greater than the area of ​​the fourth grid.

9. The display panel according to claim 2, characterized in that, In the first direction, the second electrode portion and the second connecting portion are arranged alternately; Wherein, i adjacent second electrode portions in the second direction are electrically connected to the same second connection portion, where i is a positive integer, 1≤i≤4.

10. The display panel according to claim 9, characterized in that, The first electrode portion located between two adjacent second connecting portions and the second electrode portion form a touch unit, and a plurality of the touch units arranged along the first direction form a touch unit column; In at least a portion of the touch unit columns, multiple first touch signal lines are provided.

11. The display panel according to claim 1, characterized in that, In the second direction, multiple first touch signal lines are evenly distributed.

12. The display panel according to claim 1, characterized in that, The first electrode portion is H-shaped.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1-12.

Images