Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a touch layer. The touch layer comprises a plurality of first electrodes and a plurality of second electrodes. The first electrodes are arranged in an array along a first direction and a second direction which intersect with each other. The second electrode extends along the second direction and is spaced from the first electrode. The first electrode comprises a first main electrode and a plurality of first branch electrodes, the first main electrode extends in the second direction, and the first branch electrodes are distributed on the two sides of the first main electrode and connected with the first main electrode. The branch electrodes are additionally arranged on the main electrodes, so that the touch electrodes in the touch layer are distributed more uniformly, and the coordinate sensing precision of the touch layer is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In recent years, touch technology has been increasingly used in display devices of various sizes. As a new type of human-computer interaction input display panel, touch display panel is simpler, more direct and more convenient than traditional monitor, keyboard and mouse input methods.

[0003] Due to the structural limitations of existing touch panels, the performance of touch panels cannot meet the requirements.

[0004] Therefore, a new touch display panel and display device are urgently needed. Summary of the invention

[0005] An object of the present invention is to provide a display panel and a display device to solve the problem of low touch accuracy in related display technologies.

[0006] To achieve the above object, the present invention provides a display panel, the display panel includes a touch layer. The touch layer includes a plurality of first electrodes and a plurality of second electrodes. The first electrodes are arranged in an array along a first direction and a second direction that intersect. The second electrode extends along the second direction and is spaced apart from the first electrode. The second electrode is electrically insulated from the first electrode. The first electrode includes a first trunk electrode and a plurality of first branch electrodes. The first trunk electrode extends along the second direction. The first branch electrodes are distributed on both sides of the first trunk electrode and are connected to the first trunk electrode.

[0007] Further, in the second direction, two adjacent first electrodes are electrically connected by at least one bridging trace. Preferably, the touch layer further comprises an insulating layer, and the first electrode and the second electrode are both arranged on the same side of the insulating layer. Preferably, the bridging trace is arranged on the side of the insulating layer away from the second electrode. Preferably, at least one connecting end is provided on the side of the first trunk electrode close to the bridging trace, and the connecting end passes through the insulating layer and is electrically connected to the corresponding bridging trace. Preferably, the orthographic projection of the bridging trace on the insulating layer at least partially overlaps with the orthographic projection of the adjacent first trunk electrode on the insulating layer.

[0008] Further, the second electrode includes a second trunk electrode and a plurality of second branch electrodes. The second trunk electrode is spaced apart from the first trunk electrode and extends along the second direction. The second branch electrodes are distributed on both sides of the second trunk electrode and are connected to the second trunk electrode. Preferably, in the second direction, one second branch electrode is provided between two adjacent first branch electrodes. Preferably, in the second direction, two adjacent second trunk electrodes are electrically connected to each other. Preferably, a plurality of second branch electrodes are distributed on both sides of the second trunk electrode in the first direction.

[0009] Furthermore, the display panel further comprises a connecting electrode, the connecting electrode extending along the first direction, and the connecting electrode being located between two adjacent first trunk electrodes in the second direction. In the first direction, two adjacent second trunk electrodes are electrically connected via the connecting electrode. Preferably, the orthographic projection of the bridging trace on the insulating layer at least partially overlaps with the orthographic projection of the corresponding connecting electrode on the insulating layer.

[0010] Further, the first electrode has a first center line, the first center line is parallel to the second direction, and the first electrode is an axisymmetric structure with the first center line as the axis of symmetry. And / or, the second electrode has a second center line, the second center line is parallel to the second direction, and the second electrode is an axisymmetric structure with the second center line as the axis of symmetry. Preferably, the first electrode and the second electrode also have a third center line, the third center line is perpendicular to the first center line and the second center line, and the third center line passes through the center point of the adjacent first electrode and the second electrode, and the first electrode and the second electrode are an axisymmetric structure with the third center line as the axis of symmetry.

[0011] Further, in the first direction, the ratio between the width of the first electrode and the width of the second electrode is 1:0.9-1.1. Preferably, the width of the first electrode in the first direction is equal to the width of the second electrode in the first direction. Preferably, the width of the first trunk electrode in the first direction is greater than the width of the first branch electrode in the second direction. Preferably, the width of the second trunk electrode in the first direction is greater than the width of the second branch electrode in the second direction.

[0012] Furthermore, the touch control layer further includes a virtual electrode, the virtual electrode is located between the first electrode and the adjacent second electrode, and the virtual electrode is electrically insulated from the first electrode and the second electrode.

[0013] Furthermore, the virtual electrodes located on both sides of the same first trunk electrode are axially symmetrical with the corresponding first trunk electrode as the symmetry axis. Preferably, the width of the virtual electrode is smaller than the width of the first branch electrode in the second direction. Preferably, the total area of ​​the virtual electrodes is smaller than the total area of ​​the first electrodes, and / or the total area of ​​the virtual electrodes is smaller than the total area of ​​the second electrodes.

[0014] Further, a plurality of the first branch electrodes are distributed on both sides of the first trunk electrode in the first direction. Preferably, a plurality of the first branch electrodes located on the same side of the same first trunk electrode are equidistantly spaced in the second direction. Preferably, a plurality of the second branch electrodes located on the same side of the same second trunk electrode are equidistantly spaced in the second direction. Preferably, both the first trunk electrode and the second trunk electrode include a rectangular structure extending along the second direction. Preferably, both the first branch electrode and the second branch electrode include a quadrilateral structure extending along the first direction.

[0015] The present invention further provides a display device, which includes the display panel as described above.

[0016] Advantages of the present invention:

[0017] A display panel and a display device of the present invention change the structure of the first electrode and the second electrode and add branch electrodes to the main electrode, so that the touch electrodes in the touch layer are distributed more evenly, the coordinate sensing accuracy and sensitivity of the touch layer are improved, and the user experience of the display device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the partitioning of the touch layer in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of the touch layer at the middle frame A;

[0021] Figure 3 for Figure 2 Schematic diagram of the layered structure of the touch layer at the BB' line;

[0022] Figure 4FIG. 4 is a schematic diagram of a layered structure of a display panel in an embodiment of the present invention.

[0023] The components in the figure are shown as follows:

[0024] Display panel 1; Touch layer 10;

[0025] Touch area TA; Non-touch area NA;

[0026] A first electrode 11; A first trunk electrode 111;

[0027] A first branch electrode 112; A second electrode 12;

[0028] A second trunk electrode 121; A second branch electrode 122;

[0029] Virtual electrode 13; Connecting electrode 14;

[0030] Bridge wiring 15; Connection end 16;

[0031] Touch control wiring 17; First metal layer 101;

[0032] A second metal layer 102; An insulating layer 103;

[0033] Substrate layer 20; Array substrate 30;

[0034] The light emitting layer 40 and the driving chip 50 . DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the drawings in the specification to prove that the present invention can be implemented. The embodiments of the invention can fully introduce the present invention to those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied through many different forms of embodiments of the invention, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0036] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0037] In addition, the following descriptions of the various embodiments of the invention are made with reference to the attached diagrams to illustrate specific embodiments of the invention that the present invention can be implemented with. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" another component via an intermediate component.

[0039] In the relevant display technology, foldable display screens and medium-sized display products are increasingly using capacitive active pen touch solutions, so the performance of the capacitive active pen determines the overall performance level of the product. Compared with traditional external capacitive screens, the on-cell structure of the flexible touch screen electrode load is large, and it is difficult to improve the touch performance, especially the performance of the capacitive active pen; the factors that affect the performance of the capacitive active pen include the performance of external devices such as chips and active pens, and the design of the touch electrode node pattern of the screen itself, which also greatly affects the touch coordinate accuracy of the capacitive active pen.

[0040] According to the technical problems found in the related display technologies, a display panel 1 is provided in an embodiment of the present invention. The display panel 1 has a touch layer 10, such as Figure 1 As shown in , the touch layer 10 is provided with a first electrode 11 and a second electrode 12. In the embodiment of the present invention, a branch structure is added to the first electrode 11 and the second electrode 12 so that the first electrode 11 and the second electrode 12 are distributed more evenly, thereby improving the touch accuracy.

[0041] The touch layer 10 has a touch area TA and a non-touch area NA surrounding the touch area TA. The touch area TA generally corresponds to the display area (i.e., the area displaying the screen) of the display panel 1, and the non-touch area NA generally corresponds to the frame area and the binding area (i.e., the lead area and the area connecting the binding components) of the display panel 1. The first electrode 11 and the second electrode 12 are arranged in the touch area TA, so that the user can perform touch operations according to the displayed screen. The touch layer 10 also includes a plurality of touch traces 17, which are used to electrically connect the first electrode 11 and the second electrode 12 to the driver chip 50, so as to transmit the capacitive data generated in the touch area TA to the driver chip 50 located in the non-touch area NA for processing, thereby generating a touch signal.

[0042] A plurality of first electrodes 11 are arranged in an array along a first direction X and a second direction Y perpendicular to each other, and the second electrode 12 is spaced apart from the first electrode 11 along the first direction X, and is electrically insulated from the adjacent first electrode 11. Optionally, the first electrode 11 may be a driving electrode, and the second electrode 12 may be a sensing electrode; or, the first electrode 11 may be a sensing electrode, and the second electrode 12 may be a driving electrode. When an external touch device (such as a capacitive pen, a stylus) or a finger contacts the display panel 1, the parasitic capacitance between the first electrode 11 and the second electrode 12 at the touch location increases, and the driver chip 50 detects the specific position touched by the touch device or the finger by obtaining the change in the parasitic capacitance in the touch layer 10 before and after the touch.

[0043] like Figure 2As shown in , the first electrode 11 includes a first trunk electrode 111 and a plurality of first branch electrodes 112, and the plurality of first branch wirings are evenly distributed on both sides of the first trunk electrode 111 in the first direction X and connected to the first trunk electrode 111. Specifically, the first trunk electrode 111 extends along the second direction Y, and the first branch electrodes 112 are arranged along the second direction Y and intersect with the first trunk electrode 111. Optionally, the plurality of first branch electrodes 112 located on the same side of the first trunk electrode 111 are arranged at equal intervals in the second direction Y. Optionally, the first branch electrode 112 is parallel to the first direction X, that is, the first branch electrode 112 is perpendicular to the first trunk electrode 111. The second electrode 12 includes a second trunk electrode 121 and a plurality of second branch electrodes 122, and the plurality of second branch electrodes 122 are evenly distributed on both sides of the second trunk electrode 121 in the first direction X and connected to the second trunk electrode 121. Specifically, the second trunk electrode 121 extends along the second direction Y, and the second branch electrodes 122 are arranged at intervals along the second direction Y and intersect with the second trunk electrode 121. Optionally, a plurality of second branch electrodes 122 located on the same side of the second trunk electrode 121 are arranged at equal intervals in the second direction Y. Optionally, the second branch electrodes 122 are parallel to the first direction X, that is, the second branch electrodes 122 are perpendicular to the second trunk electrode 121. Among them, the width W11 of the first trunk electrode 111 in the first direction X is greater than the width W12 of the first branch electrode 112 in the second direction Y, and the width W21 of the second trunk electrode 121 in the first direction X is greater than the width W22 of the second branch electrode 122 in the second direction Y, thereby improving the stability of signal transmission and reducing the difficulty of manufacturing the touch layer 10. The first trunk electrode 111 and the second trunk electrode 121 may include a rectangular structure extending along the second direction Y, and the first branch electrode 112 and the second branch electrode 122 may include a quadrilateral structure extending along the first direction X.

[0044] The first branch electrode 112 extends toward the adjacent second electrode 12, and the second branch electrode 122 extends toward the adjacent first electrode 11, so that the first branch electrode 112 and the second branch electrode 122 located between the adjacent first trunk electrode 111 and the second trunk electrode 121 are alternately arranged, that is, there is a second branch electrode 122 between two adjacent first branch electrodes 112 in the second direction Y, so that the distribution area of ​​the driving electrode and the sensing electrode is increased by adding branch electrodes on both sides of the trunk electrode, thereby increasing the coupling degree between the driving electrode and the sensing electrode, and improving the sensitivity of the touch layer 10.

[0045] The first electrode 11 has a first center line L1, and the first center line L1 is parallel to the second direction Y. The first electrode 11 is an axisymmetric structure with the first center line L1 as the axis of symmetry, that is, the first electrode 11 is a left-right symmetrical structure. The second electrode 12 has a second center line L2, and the second center line L2 is parallel to the second direction Y. The second electrode 12 is an axisymmetric structure with the second center line L2 as the axis of symmetry, that is, the second electrode 12 is a left-right symmetrical structure. Further, the first electrode 11 and the second electrode 12 also have a third center line L3, and the third center line L3 is perpendicular to the first center line L1 and the second center line L2, and passes through the center points of the adjacent first electrode 11 and the second electrode 12. The first electrode 11 and the second electrode 12 are respectively axisymmetric structures with the third center line L3 as the axis of symmetry, and the first electrode 11 and the second electrode 12 are both top-bottom symmetrical structures. By arranging the first electrode 11 and the second electrode 12 to be symmetrical in the left and right directions and in the top and bottom directions, the branch electrodes in the first electrode 11 and the second electrode 12 can be evenly distributed, thereby further improving the coupling degree between the driving electrode and the sensing electrode, and improving the coordinate sensing accuracy of the touch layer 10, so that the touch signal target value can be achieved with a smaller electrode area.

[0046] In the first direction X, the ratio between the width W1 of the first electrode 11 and the width W2 of the second electrode 12 is 1:0.9-1.1, specifically 1:0.9, 1:1, 1:1.1, that is, the difference between the width W1 of the first electrode 11 in the first direction X and the width W2 of the second electrode 12 in the first direction X is within 10%, so that the width W1 of the first electrode 11 in the first direction X and the width W2 of the second electrode 12 in the second direction X are close to each other, thereby further improving the distribution uniformity between the driving electrodes and the sensing electrodes, and further improving the coordinate sensing accuracy of the touch layer 10. Optionally, the width W1 of the first electrode 11 in the first direction X is equal to the width W2 of the second electrode 12 in the first direction X.

[0047] In the second direction Y, two adjacent first electrodes 11 are electrically connected to each other, and two adjacent second electrodes 12 are electrically connected to each other. Figure 3As shown in , the touch layer 10 includes a first metal layer 101, a second metal layer 102 and an insulating layer 103. The first metal layer 101 and the second metal layer 102 are respectively arranged on both sides of the insulating layer 103. The first electrode 11 and the second electrode 12 are both located in the first metal layer 101, that is, the first electrode 11 and the second electrode 12 are both located on the same side of the insulating layer 103. In the second direction Y, two adjacent second trunk electrodes 121 are connected to each other, so that the two adjacent second electrodes 12 in the second direction Y are electrically connected. Further, the first metal layer 101 also includes a connecting electrode 14, which extends along the first direction X, and the connecting electrode 14 is located between two adjacent first trunk electrodes 111 in the second direction Y, and the two adjacent second trunk electrodes 121 in the first direction X are electrically connected through the connecting electrode 14.

[0048] In the second direction Y, two adjacent first electrodes 11 are electrically connected through at least one bridge trace 15, and the bridge trace 15 is located in the second metal layer 102 and extends in the second direction Y. At least one connection end 16 is provided on the side of the first trunk electrode 111 close to the bridge trace 15, and the connection end 16 penetrates the insulating layer 103 and is electrically connected to the corresponding bridge trace 15. The orthographic projection of the bridge trace 15 on the insulating layer 103 at least partially overlaps with the orthographic projection of the adjacent first trunk electrode 111 on the insulating layer 103, and the orthographic projection of the bridge trace 15 on the insulating layer 103 at least partially overlaps with the orthographic projection of the corresponding connection electrode 14 on the insulating layer 103. In the embodiment of the present invention, the two adjacent first electrodes 11 are electrically connected through two bridge traces 15, but in other embodiments of the present invention, the number of bridge traces 15 between two adjacent first electrodes 11 is not limited, and it can be 1, or 3 or more. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0049] Furthermore, the touch control layer 10 further includes a virtual electrode 13, and the virtual electrode 13 is located in the first metal layer 101. Figure 2As shown in , the virtual electrode 13 is located between the first electrode 11 and the adjacent second electrode 12, and the virtual electrode 13 is electrically insulated from the first electrode 11 and the second electrode 12, so that the adjacent first electrode 11 and the second electrode 12 can be electrically isolated by the virtual electrode 13 to prevent short circuit between each other. The virtual electrodes 13 located on both sides of the same first trunk electrode 111 are axially symmetrical with the corresponding first trunk electrode 111 as the symmetry axis. The virtual electrode 13 is used to reduce the total area of ​​the actual touch electrode and reduce the self-capacitance load of the entire touch electrode. At the same time, the virtual electrode 13 can also reduce the parasitic capacitance between the first electrode 11 and the second electrode 12 and other electronic devices in the display panel 1, thereby increasing the capacitance change between the first electrode 11 and the second electrode 12 when touched, and further improving the sensitivity of the touch layer 10. Among them, the width W3 of the virtual electrode 13 (the width W3 of the virtual electrode 13 refers to: in the first direction X or the second direction Y, the distance between the side of the virtual electrode 13 close to the first electrode 11 and the side close to the second electrode 12) is smaller than the width W12 of the first branch electrode 112 in the second direction Y, and the total area of ​​the virtual electrode 13 is smaller than the total area of ​​the first electrode 11, and the total area of ​​the virtual electrode 13 can also be smaller than the total area of ​​the second electrode 12.

[0050] Furthermore, if Figure 4 As shown in the figure, the display panel 1 also includes a substrate layer 20, an array substrate 30 and a light-emitting layer 40. The touch layer 10 is located on one side of the substrate layer 20. The substrate layer 20 can be a flexible substrate (such as a polyimide film) or a hard substrate (such as a glass substrate) according to product requirements, and is used to support and protect the display device in the display panel 1. The array substrate 30 is arranged between the substrate layer 20 and the touch layer 10, and is provided with a plurality of thin film transistors and a plurality of signal wirings. The signal wirings are electrically connected to the corresponding thin film transistors and form a pixel circuit for controlling the light-emitting layer 40. The light-emitting layer 40 is arranged between the array substrate 30 and the touch layer 10, and includes a plurality of light-emitting devices. The light-emitting devices are electrically connected to the thin film transistors in the corresponding pixel circuits, and are lit up under the drive of the corresponding pixel circuits, thereby realizing light-emitting display.

[0051] A display device is also provided in an embodiment of the present invention, and the display device may be an OLED (Organic Light-Emitting Diode) display device, which includes the display panel 1 as described above, and the display panel 1 is used to provide a display image for the display device. The display device may be any display device with a display function, such as a mobile phone, a laptop computer, a tablet computer, etc.

[0052] In the display panel provided in the embodiment of the present invention, by changing the structure of the first electrode and the second electrode and adding a branch electrode to the main electrode, the touch electrodes in the touch layer are distributed more evenly, the coupling between the driving electrode and the sensing electrode is increased, and the coordinate sensing accuracy and sensitivity of the touch layer are improved, the misjudgment rate is reduced, and the user experience of the display device is improved.

[0053] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0054] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0055] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: Including touch layer; The touch layer comprises: A plurality of first electrodes are arranged in an array along an intersecting first direction and a second direction; a plurality of second electrodes extending along the second direction and spaced apart from the first electrodes; The second electrode is electrically insulated from the first electrode; The first electrode comprises: A first trunk electrode extending along the second direction; A plurality of first branch electrodes are distributed on both sides of the first trunk electrode and connected to the first trunk electrode.

2. The display panel according to claim 1, wherein: In the second direction, two adjacent first electrodes are electrically connected via at least one bridge wiring; Preferably, the touch layer further comprises an insulating layer, and the first electrode and the second electrode are both arranged on the same side of the insulating layer; Preferably, the bridge trace is arranged on a side of the insulating layer away from the second electrode; Preferably, at least one connection end is provided on a side of the first trunk electrode close to the bridge wiring, and the connection end penetrates the insulating layer and is electrically connected to the corresponding bridge wiring; Preferably, an orthographic projection of the bridging trace on the insulating layer at least partially overlaps with an orthographic projection of the adjacent first trunk electrode on the insulating layer.

3. The display panel according to claim 2, wherein: The second electrode comprises: A second trunk electrode, spaced apart from the first trunk electrode and extending along the second direction; A plurality of second branch electrodes, distributed on both sides of the second trunk electrode and connected to the second trunk electrode; Preferably, in the second direction, one second branch electrode is provided between two adjacent first branch electrodes; Preferably, in the second direction, two adjacent second trunk electrodes are electrically connected to each other; Preferably, a plurality of the second branch electrodes are distributed on both sides of the second trunk electrode in the first direction.

4. The display panel according to claim 3, wherein: Also includes: A connecting electrode extending along the first direction, and the connecting electrode is located between two adjacent first trunk electrodes in the second direction; In the first direction, two adjacent second trunk electrodes are electrically connected via the connecting electrode; Preferably, an orthographic projection of the bridging trace on the insulating layer at least partially overlaps with an orthographic projection of the corresponding connecting electrode on the insulating layer.

5. The display panel according to claim 1, wherein: The first electrode has a first center line, the first center line is parallel to the second direction, and the first electrode is an axisymmetric structure with the first center line as the symmetry axis; and / or, The second electrode has a second center line, the second center line is parallel to the second direction, and the second electrode has an axisymmetric structure with the second center line as the symmetry axis; Preferably, the first electrode and the second electrode also have a third center line, the third center line is perpendicular to the first center line and the second center line, and the third center line passes through the center points of the adjacent first electrode and the second electrode, and the first electrode and the second electrode are axially symmetrical structures with the third center line as the axis of symmetry.

6. The display panel according to claim 3, wherein: In the first direction, the ratio between the width of the first electrode and the width of the second electrode is 1:0.9-1.1; Preferably, the width of the first electrode in the first direction is equal to the width of the second electrode in the first direction; Preferably, the width of the first trunk electrode in the first direction is greater than the width of the first branch electrode in the second direction; Preferably, the width of the second trunk electrode in the first direction is greater than the width of the second branch electrode in the second direction.

7. The display panel according to claim 1, wherein: The touch layer also includes: a virtual electrode, located between the first electrode and the adjacent second electrode; The virtual electrode is electrically insulated from the first electrode and the second electrode.

8. The display panel according to claim 7, wherein: The virtual electrodes located on both sides of the same first trunk electrode are in an axisymmetric structure with the corresponding first trunk electrode as a symmetry axis; Preferably, the width of the virtual electrode is smaller than the width of the first branch electrode in the second direction; Preferably, the total area of ​​the virtual electrodes is smaller than the total area of ​​the first electrodes, and / or the total area of ​​the virtual electrodes is smaller than the total area of ​​the second electrodes.

9. The display panel according to claim 3, wherein: Also includes: A plurality of the first branch electrodes are distributed on both sides of the first trunk electrode in the first direction; Preferably, a plurality of the first branch electrodes located on the same side of the first trunk electrode are arranged at equal intervals in the second direction; Preferably, a plurality of the second branch electrodes located on the same side of the second trunk electrode are arranged at equal intervals in the second direction; Preferably, the first trunk electrode and the second trunk electrode each include a rectangular structure extending along the second direction; Preferably, the first branch electrode and the second branch electrode both include a quadrilateral structure extending along the first direction.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-9.

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