Touch display panel and display device

Abstract

This application relates to a touch display panel and display device, comprising a plurality of first touch electrodes arranged in an array, each first touch electrode being electrically connected in a first direction; a plurality of second touch electrodes arranged in an array, each second touch electrode being electrically connected in a second direction; and a plurality of virtual electrode columns, each virtual electrode column comprising a plurality of virtual electrodes, at least a portion of each virtual electrode being located between adjacent first touch electrodes and second touch electrodes, the virtual electrodes being spaced apart from the first touch electrodes and the second touch electrodes respectively; wherein each virtual electrode in each virtual electrode column is electrically connected and electrically connected to any adjacent first touch electrode, and the first touch electrodes connected to each virtual electrode column are located in different rows, and the first direction and the second direction intersect. The touch display panel of this application can achieve a narrow bezel design.

Description

Technical Field

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

[0002] With the development of display technology, touch panel technology has entered a period of rapid development.

[0003] However, the bezels of touchscreens in related technologies are relatively wide, which affects the screen's aesthetics. Summary of the Invention

[0004] Therefore, it is necessary to provide a touch display panel and display device that can achieve a narrow bezel design to address the aforementioned technical problems.

[0005] In a first aspect, embodiments of this application provide a touch display panel, the touch display panel comprising:

[0006] Multiple first touch electrodes are arranged in an array, and each of the first touch electrodes is electrically connected in a first direction;

[0007] Multiple second touch electrodes are arranged in an array, and each second touch electrode is electrically connected in a second direction;

[0008] Multiple virtual electrode rows are provided, each virtual electrode row comprising multiple virtual electrodes. At least a portion of each virtual electrode is located between adjacent first and second touch electrodes, and the virtual electrodes are spaced apart from the first and second touch electrodes, respectively.

[0009] Each of the virtual electrodes in each of the virtual electrode columns is electrically connected and electrically connected to any of the adjacent first touch electrodes, and the first touch electrodes connected to each of the virtual electrode columns are located in different rows, with the first direction and the second direction intersecting.

[0010] Secondly, embodiments of this application also provide a display device, which includes the touch display panel provided in the first aspect.

[0011] The touch display panel and display device provided in this application embodiment include a plurality of first touch electrodes arranged in an array, a plurality of second touch electrodes arranged in an array, and a plurality of virtual electrode columns. Each of the first touch electrodes in a first direction is electrically connected, and each of the second touch electrodes in a second direction is electrically connected. Each virtual electrode column includes a plurality of virtual electrodes. At least a portion of each virtual electrode is located between adjacent first touch electrodes and second touch electrodes. The virtual electrodes are spaced apart from the first touch electrodes and the second touch electrodes, respectively. This application sets up each virtual electrode in each virtual electrode column to be electrically connected, and also electrically connected to any adjacent first touch electrode. This allows the virtual electrodes to be reused as traces for touch electrode rows composed of first touch electrodes electrically connected in the first direction. Since the virtual electrode columns are located within the display area of ​​the display panel, compared to related technologies where the traces of each touch electrode row are led out from the bezel area of ​​the display panel, this application can reduce the number of traces set in the bezel area of ​​the display panel, thereby achieving a narrow bezel design. In addition, this application also sets the first touch electrodes connected to each virtual electrode column to be located in different rows, which can avoid short-circuiting of first touch electrodes in different rows across rows and ensure the independence of the row signal channels. Attached Figure Description

[0012] Figure 1 This is a plan view of a display panel in related technologies;

[0013] Figure 2 This is a plan view of a touch display panel provided in an embodiment of this application;

[0014] Figure 3 A cross-sectional schematic diagram of a touch display panel provided in an embodiment of this application;

[0015] Figure 4 A plan view of another touch display panel provided in an embodiment of this application;

[0016] Figure 5 A cross-sectional schematic diagram of another touch display panel provided in an embodiment of this application;

[0017] Figure 6 A film layer structure diagram of a touch display panel provided in an embodiment of this application;

[0018] Figure 7 A cross-sectional schematic diagram of another touch display panel provided in an embodiment of this application;

[0019] Figure 8 This is a schematic diagram of the structure of a touch electrode block provided in an embodiment of this application;

[0020] Figure 9 A plan view of yet another touch display panel provided in an embodiment of this application;

[0021] Figure 10 A plan view of yet another touch display panel provided in an embodiment of this application;

[0022] Figure 11 A plan view of yet another touch display panel provided in an embodiment of this application;

[0023] Figure 12 This is a schematic diagram of the structure of the display device provided in the embodiments of this application.

[0024] Explanation of reference numerals in the attached drawings: 10-Touch electrode row, 20-Touch electrode column, 11-First touch trace, 12-Second touch trace, 21-First touch electrode, 22-Second touch electrode, 211-First touch connection part, 221-Second touch connection part, 23-Virtual electrode, 30-Virtual electrode column, 31-First bridge, 32-Second bridge, 40-Touch electrode block, 41-Sub-area, 201-First main touch electrode part, 202-First branch touch electrode part, 203-Second main touch electrode part, 204-Second branch touch electrode part, 51-First lead-out trace, 52-Second lead-out trace, 100-Display panel, 200-Display device. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0028] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0029] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0030] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0031] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0032] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0033] As described in the background section, display panels in related technologies suffer from wide bezels, resulting in a small screen-to-body ratio and affecting the aesthetics of the display panel. For example, please refer to... Figure 1 , Figure 1 The X-axis direction is the first direction, and the Y-axis direction is the second direction. In the existing touch screen, the display area AA contains multiple rows 10 of touch electrodes extending along the first direction and arranged sequentially along the second direction, and multiple columns 20 of touch electrodes extending along the second direction and arranged sequentially along the first direction. Each row 10 of touch electrodes and each column 20 of touch electrodes are intersected.

[0034] In related technologies, each touch electrode row 10 is connected to the integrated circuit IC via a corresponding first touch trace 11. The first touch trace 11 can be led out from either end of the touch electrode row 10 and from the bezel area to the integrated circuit IC. Each touch electrode column 20 is also connected to the integrated circuit IC via a corresponding second touch trace 12. The second touch trace 12 can be led out from either end of the touch electrode column 20 and from the bezel area to the integrated circuit IC. As the precision of touch screens improves, the number of touch electrodes in the touch screen continues to increase. Correspondingly, the number of traces in the bezel area (non-display area NA) also continues to increase. Currently, the number of traces is increased by increasing the area of ​​the bezel area to increase the trace area. However, this method results in a wider display bezel, affecting the screen's aesthetics.

[0035] Based on the aforementioned technical problems, the inventors discovered that by setting the first touch traces corresponding to the touch electrode rows in the display panel inside the display panel, the occupation of the left and right bezel areas of the display panel can be reduced, thus achieving a narrow bezel design. Based on this, the inventors further developed the technical solution of the embodiments of this application. Specifically, the touch display panel provided in the embodiments of this application includes a plurality of first touch electrodes arranged in an array, a plurality of second touch electrodes arranged in an array, and a plurality of virtual electrode columns. The first touch electrodes in a first direction are electrically connected, and the second touch electrodes in a second direction are electrically connected. Each virtual electrode column includes a plurality of virtual electrodes, at least a portion of which is located between adjacent first and second touch electrodes. The virtual electrodes are spaced apart from the first and second touch electrodes, respectively. Each virtual electrode in each virtual electrode column is electrically connected and electrically connected to any adjacent first touch electrode. The first touch electrodes connected to each virtual electrode column are located in different rows, and the first and second directions intersect. By adopting the above technical solution, virtual electrode columns can be reused as touch traces for touch electrode rows, thereby reducing the number of touch traces that need to be set in the left and right bezel areas and realizing a narrow bezel display panel.

[0036] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] In some exemplary embodiments, please refer to Figure 2 This application provides a touch display panel, which includes:

[0038] Multiple first touch electrodes 21 are arranged in an array, and each first touch electrode 21 is electrically connected in a first direction;

[0039] Multiple second touch electrodes 22 are arranged in an array, and each second touch electrode 22 is electrically connected in the second direction;

[0040] Multiple virtual electrode rows 30, each virtual electrode row 30 including multiple virtual electrodes 23, at least a portion of each virtual electrode 23 being located between adjacent first touch electrodes and second touch electrodes, and the virtual electrodes 23 being spaced apart from the first touch electrode 21 and the second touch electrode 22, respectively; wherein,

[0041] Each virtual electrode 23 of each virtual electrode column 30 is electrically connected and electrically connected to any of the adjacent first touch electrodes 21, and the first touch electrodes 21 connected to each virtual electrode column 30 are located in different rows, with the first direction and the second direction intersecting.

[0042] In the accompanying drawings of this application, the X-axis direction is the first direction, the Y-axis direction is the second direction, and the Z-axis direction is the third direction. From Figure 2 As can be seen, multiple first touch electrodes 21 are arranged in an array in the first direction and the second direction. Each first touch electrode 21 in the first direction is electrically connected to form multiple rows of touch electrodes 10 that extend along the first direction and are arranged sequentially along the second direction.

[0043] Multiple second touch electrodes 22 are arranged in an array in a first direction and a second direction. Each second touch electrode 22 in the second direction is electrically connected to form multiple touch electrode columns 20 that extend along the second direction and are arranged along the first direction.

[0044] In this example, the first touch electrode 21 and the second touch electrode 22 are located on the same metal layer. Figure 2 This is a schematic diagram of the planar structure of the metal layer containing the first touch electrode 21 and the second touch electrode 22. Figure 2 As can be seen, adjacent second touch electrodes 22 in the second direction are directly connected. For adjacent first touch electrodes 21 in the first direction, if they are directly connected... Figure 2 The metal layer connections shown can cause signal shorting. Therefore, when the connection lines of adjacent first touch electrodes 21 in the first direction are close to the connection lines between second touch electrodes 22, a layer swap is required. See one example. Figure 3 The two adjacent first touch electrodes 21 are connected in a third-party upward layer through the first touch connection part 211.

[0045] See another example. Figure 4 In the first direction, adjacent first touch electrodes 21 are directly connected. In the second direction, the connection lines of adjacent second touch electrodes 22 are layered when they approach the connection lines between the second touch electrodes 22. Please refer to [link / reference]. Figure 5The two adjacent second touch electrodes 22 are connected in a third-party upward layer through the second touch connection part 221.

[0046] In each row 10 and column 20 of the touch electrode, except for the outermost first touch electrode 21 and the outermost second touch electrode 22, the remaining first touch electrodes 21 and second touch electrodes 22 can be rhomboid in shape, so that the first touch electrodes 21 and second touch electrodes 22 are distributed in a grid pattern on the touch display panel. The outermost first touch electrode 21 and the outermost second touch electrode 22 can be half of a rhombus, i.e., a triangle, to ensure that there are no touch blind spots at the edges of the touch area of ​​the touch display panel.

[0047] In this application, the first touch electrode can be a driving electrode for transmitting a driving signal, and the second touch electrode can be a sensing electrode for receiving a signal modulated by the touch action. The two sets of touch electrodes are electrically connected along the row and column directions, respectively, forming a mutually orthogonal signal grid. The integrated circuit (IC) can accurately determine the touch position by analyzing the row and column coordinates of the capacitance change, thus achieving two-dimensional positioning. In another example, the second touch electrode can be a driving electrode for transmitting a driving signal, and the first touch electrode can be a sensing electrode for receiving a signal modulated by the touch action.

[0048] It is understandable that the gap area between conventional row and column touch electrodes is a weak area of ​​electric field coverage (touch blind zone), making it difficult to trigger effective sensing when a fingertip lands in the gap. Therefore, this application provides a virtual electrode 23 between adjacent first touch electrodes 21 and second touch electrodes 22. The virtual electrode 23 is located in the gap between the first touch electrodes 21 and second touch electrodes 22, which can enhance the electric field strength in the gap area, eliminate touch blind zones, and achieve uniform touch response across the entire panel.

[0049] In this application, to reduce the touch traces in the left and right bezel areas of the display panel, for a row of touch electrodes 10, one of the first touch electrodes 21 can be connected to a virtual electrode 23 adjacent to the first touch electrode 21. Then, the virtual electrode 23 connected to the first touch electrode 21 is connected to each virtual electrode 23 in the second direction, near the lower bezel of the display panel, to form a virtual electrode column 30.

[0050] In one example, please refer to [link / reference]. Figure 2The display panel includes multiple touch electrode rows 10 (touch electrode rows 10-1, 10-2, 10-3, 10-4, and 105) and multiple virtual electrode columns 30 (virtual electrode column 30-1, 30-2, 30-3, and 30-4). In this example, touch electrode row 10-1 is connected to virtual electrode column 30-1 (the connection relationship of each virtual electrode 23 in virtual electrode column 30 is not shown in the figure), and virtual electrode column 30-1 can be reused as the touch trace of touch electrode row 10-1; similarly, touch electrode row 10-22 is connected to virtual electrode column 30-2, and virtual electrode column 30-2 can be reused as the touch trace of touch electrode row 10-2.

[0051] The touch display panel and display device provided in this application embodiment include a plurality of first touch electrodes arranged in an array, a plurality of second touch electrodes arranged in an array, and a plurality of virtual electrode columns. Each of the first touch electrodes in a first direction is electrically connected, and each of the second touch electrodes in a second direction is electrically connected. Each virtual electrode column includes a plurality of virtual electrodes. At least a portion of each virtual electrode is located between adjacent first touch electrodes and second touch electrodes. The virtual electrodes are spaced apart from the first touch electrodes and the second touch electrodes, respectively. This application sets up each virtual electrode in each virtual electrode column to be electrically connected, and also electrically connected to any adjacent first touch electrode. This allows the virtual electrodes to be reused as traces for touch electrode rows composed of first touch electrodes electrically connected in the first direction. Since the virtual electrode columns are located within the display area of ​​the display panel, compared to related technologies where the traces of each touch electrode row are led out from the bezel area of ​​the display panel, this application can reduce the number of traces set in the bezel area of ​​the display panel, thereby achieving a narrow bezel design. In addition, this application also sets the first touch electrodes connected to each virtual electrode column to be located in different rows, which can avoid short-circuiting of first touch electrodes in different rows across rows and ensure the independence of the row signal channels.

[0052] In some exemplary embodiments, please continue to refer to Figure 2 or Figure 4 The touch display panel also includes a first bridge 31 and a second bridge, wherein the first touch electrode 21 and the virtual electrode 23 are electrically connected through the first bridge 31, and two adjacent virtual electrodes 23 in the virtual electrode column 30 are electrically connected through the second bridge.

[0053] When it is necessary to set up a virtual electrode column 30 in the display panel, any first touch electrode 21 in the touch electrode row 10 can be selected, and the first touch electrode 21 can be connected to the adjacent virtual electrode 23 through the first bridge 31. Then, the virtual electrode 23 connected to the first touch electrode 21 can be connected to each virtual electrode 23 on the side of the virtual electrode 23 in the second direction near the bottom frame of the display panel through a second bridge to form a virtual electrode column. Finally, the virtual electrode column 30 can be directly led out from the bottom frame to be connected to the integrated circuit IC, thus realizing the connection between the touch electrode row 10 and the integrated circuit IC through the virtual electrode column 30.

[0054] In some exemplary embodiments, please refer to Figure 6 , Figure 7 The touch display panel also includes:

[0055] substrate 101;

[0056] The first metal layer 102 is located on one side of the substrate 101;

[0057] The touch insulating layer 103 is located on the side of the first metal layer 102 away from the substrate 101;

[0058] The second metal layer 104 is located on the side of the touch insulating layer 103 away from the substrate 101;

[0059] In this configuration, each virtual electrode 23 and each first bridging bridge 31 are located in the same metal layer, and each second bridging bridge 32 is located in the same metal layer, with the virtual electrode 23 and the second bridging bridge 32 being disposed in different layers.

[0060] In one example, each virtual electrode 23 and each first bridging bridge 31 are located in the second metal layer, and each second bridging bridge 32 is located in the first metal layer.

[0061] In this embodiment, the first metal layer 102 is located between the substrate 101 and the touch insulating layer 103. The touch insulating layer 103 is used to isolate the touch electrode row 10 and the touch electrode column 20 to avoid signal crosstalk. Each virtual electrode 23, each first touch electrode 21 and each second touch electrode 22 are located in the second metal layer 104.

[0062] Please refer to the following: Figure 2 , Figure 3 and Figure 7 , Figure 2 This is a schematic diagram of the planar structure of the second metal layer 104 in one example. Figure 2In the example shown, the second bridge 32 and the first touch connection 211 are located on the first metal layer 102, and the first bridge and the second touch connection 221 are located on the second metal layer 104. In application, the first metal layer 102 can be deposited and patterned on the substrate 101 where the display array has been completed to form the second bridge 32 and the first touch connection 211. Then, a touch insulating layer 103 is deposited and formed, and holes are made in the touch insulating layer 103 by etching or laser drilling. Then, the second metal layer 104 is deposited and patterned so that the material of the second metal layer fills the holes in the touch insulating layer 103, thereby realizing the connection with the lower second bridge 32 and the first touch connection 211.

[0063] In another example, please refer to [reference needed]. Figure 4 , Figure 5 and Figure 7 , Figure 4 This is a schematic diagram of the planar structure of the second metal layer 104 in another example. Figure 4 In the example shown, the second bridge 32 and the second touch connection 221 are located on the first metal layer 102, and the first bridge 31 and the first touch connection 211 are located on the second metal layer 104. In application, the first metal layer 102 can be deposited and patterned on the substrate 101 where the display array has been completed to form the second bridge 32 and the second touch connection 221. Then, a touch insulating layer 103 is deposited and formed, and holes are made in the touch insulating layer 103 by etching or laser drilling. Then, the second metal layer 104 is deposited and patterned so that the material of the second metal layer fills the holes in the touch insulating layer 103, thereby realizing the connection with the lower second bridge 32 and the second touch connection 221.

[0064] In some exemplary embodiments, please refer to Figure 8 The touch display panel includes multiple touch electrode blocks 40, and each touch electrode block 40 includes a first touch electrode 21 and a second touch electrode 22.

[0065] The first touch electrode 21 includes a first main touch electrode portion 201 extending along a first direction and a plurality of first branch touch electrode portions 202 connected to the first main touch electrode portion 201. The second touch electrode 22 includes a second main touch electrode portion 203 extending along a second direction and a plurality of second branch touch electrode portions 204 connected to the second main touch electrode portion 203.

[0066] The first main touch electrode 201 and the second main touch electrode 203 divide the touch electrode block 40 into four sub-regions 41. Each sub-region 41 is provided with a first branch touch electrode 202, a second branch touch electrode 204 and a virtual electrode 23. The virtual electrode 23 is disposed between the first branch touch electrode 202 and the second branch touch electrode 204.

[0067] The virtual electrodes 23 in two adjacent sub-regions 41 in the second direction belong to the same virtual electrode column 30. The virtual electrodes 23 in two adjacent sub-regions 41 in the first direction are insulated from each other. The virtual electrodes 23 in at least some of the two adjacent sub-regions 41 in the second direction are electrically connected.

[0068] In some embodiments of this application, the touch electrode can be Figure 2 and Figure 4 The diamond-shaped electrode shown; in other embodiments of this application, the touch electrode may also be... Figure 8 The star-shaped electrode shown.

[0069] For example, please refer to Figure 8 As can be seen, within the touch electrode block 40, the first main touch electrode portion 201 extends along the first direction X, and the second main touch electrode portion 203 extends along the second direction Y, with the first direction X and the second direction Y intersecting. The first main touch electrode portion 201 is connected to the first branch touch electrode portion 202, and the second main touch electrode portion 203 is connected to the second branch touch electrode portion 204.

[0070] Within each touch electrode block 40, the projection of the first main touch electrode 201 along the third direction Z and the projection of the second main touch electrode 203 along the third direction Z have an intersecting area. In the intersecting area, a first touch connection part 211 (the first touch connection part 211 and the first main touch electrode 201 are disposed in different layers) can be provided. The first main touch electrode 201 is divided into two parts by the second touch electrode 10, and the two parts of the first main touch electrode 201 are connected through the first touch connection part 211.

[0071] In application, the first touch electrode portion 202 can extend from the end of the first main touch electrode portion 11; or, the first touch electrode portion 202 can extend from the middle region of the first main touch electrode portion 201. The first touch electrode portion 202 can extend in a single direction; or the first touch electrode portion 202 can extend in multiple directions. This application embodiment does not impose special restrictions on the arrangement pattern of the first touch electrode portion 202 or the connection area between the first touch electrode portion 202 and the first main touch electrode portion 201, as long as the first touch electrode portion 202 and the first main touch electrode portion 201 are electrically connected, and the first touch electrode portion 202 and the second main touch electrode portion 203 and the second touch electrode portion 204 do not interfere with each other.

[0072] Similarly, the second touch electrode portion 204 can extend from the end of the second main touch electrode portion 203; the second touch electrode portion 204 can also extend from the middle region of the second main touch electrode portion 203. Optionally, the second touch electrode portion 204 can extend in a single direction; or the second touch electrode portion 204 can extend in multiple directions. This application embodiment does not impose special restrictions on the arrangement pattern of the second touch electrode portion 204 or the connection area between the second touch electrode portion 204 and the second main touch electrode portion 203, as long as the second touch electrode portion 204 and the second main touch electrode portion 203 are electrically connected, and the second touch electrode portion 204 does not interfere with the first main touch electrode portion 11 and the first touch electrode portion 13.

[0073] In the embodiments of this application, please continue to refer to Figure 8 , Figure 8 The purple portion is the first touch electrode 21, the blue portion is the second touch electrode 22, and the green portion is the virtual electrode 23. From... Figure 8 As can be seen, in the touch electrode block 40, in addition to the virtual electrode 23 disposed between the first touch electrode section 202 and the second touch electrode section 204, virtual electrodes 23 can also be disposed at both ends of the first main touch electrode section 201 in the first direction. Furthermore, in each sub-region 41, virtual electrodes 23 can also be disposed on the side of the first touch electrode section 202 away from the first main touch electrode section 201 in the second direction. For ease of distinction, in subsequent embodiments, the virtual electrode 23 disposed between the first touch electrode section 202 and the second touch electrode section 204 will be referred to as the first virtual electrode 231; the virtual electrodes 232 will be referred to as the virtual electrodes 23 at both ends of the first main touch electrode section 201 in the first direction; and the virtual electrodes 233 will be referred to as the virtual electrodes 23 on the side of the first touch electrode section 202 away from the first main touch electrode section 201 in the second direction in each sub-region 41. In the touch display panel formed by the star-shaped electrodes, the virtual electrode 23 used to connect with the first touch electrode 21 and form a virtual electrode array 30 is the first virtual electrode 231.

[0074] In one example, see Figure 9 , Figure 9This is a plan view of a touch display panel composed of multiple arrayed touch electrode blocks 40. In this example, taking touch electrode row 10-1 as an example, a first touch electrode portion 202 in touch electrode row 10-1 is connected to a first virtual electrode 231 via a first connecting bridge 31; the first virtual electrode 231 connected to the first connecting bridge 31 is connected to an adjacent first virtual electrode 231 near the lower edge of the display panel in the second direction via a second connecting bridge 32; the first virtual electrodes 231 are interconnected via the second connecting bridge 32 to form a virtual electrode column 30. It should be noted that in Figure 9 Although the second bridge 32 is shown, in actual applications, the second bridge 32 is located on a different metal layer than the first touch electrode 21, the second touch electrode 22, and the virtual electrode 23. Adjacent first virtual electrodes 23 are connected by the second bridge 32.

[0075] In some exemplary embodiments, please refer to Figure 10 The touch display panel includes multiple first lead-out traces 51, at least a portion of which are connected to the touch electrode row 10 via virtual electrodes 23; the touch display panel also includes a display area AA and a non-display area NA that surrounds the display area in at least a portion, the non-display area NA including a trace area NA1, the trace area NA1 being located on one side of the display area AA in a second direction;

[0076] Wherein, when the first touch electrode 21 and the second touch electrode 22 meet the first preset conditions, each first lead-out trace 51 is located in the trace area. The first preset conditions include N≤2M, where N is the number of touch electrode rows 10 formed by the first touch electrodes 21 arranged in an array, and M is the number of touch electrode columns 20 formed by the second touch electrodes 22 arranged in an array.

[0077] from Figure 10 As can be seen, the first lead-out trace 51 can be connected to the first virtual electrode 231 closest to the integrated circuit IC in the virtual electrode row 30. Thus, the touch electrode row 30 can be connected to the integrated circuit IC through the virtual electrode row 30 and the first lead-out trace 51.

[0078] It is understood that the number of virtual electrode rows 30 that can be set in the display panel is related to the number of touch electrode rows 20. Typically, the number of virtual electrode rows 30 that can be set in the display panel is twice the number of touch electrode rows 20 in the display panel. Therefore, when the number of touch electrode rows 10 is less than or equal to twice the number of touch electrode rows 20, all touch electrode rows 10 in the display panel can be connected to the integrated circuit IC by setting virtual electrode rows 30, thus eliminating the need to set touch traces in the left and right bezel areas of the display panel. Even if the number of touch electrode rows 10 is greater than the number of touch electrode rows 20, only a small number of touch electrode rows 10 will need to set touch traces in the left and right bezel areas of the display panel. Compared to related technologies that set all touch traces of touch electrode rows 10 in the left and right bezel areas, this application can greatly reduce the number of traces in the left and right bezel areas, achieving a narrow bezel design.

[0079] In some exemplary embodiments, the two ends of each first touch electrode portion 202, each second touch electrode portion 204, each first main touch electrode portion 201 and each second main touch electrode portion 203 are located in the same metal layer, the middle portion of each second main touch electrode portion 203 is located in the same metal layer, and the two ends of the second main touch electrode portion 203 and the middle portion of the second main touch electrode portion 203 are disposed in different layers.

[0080] Alternatively, the two ends of each first touch electrode 202, each second touch electrode 204, each second main touch electrode 203 and each first main touch electrode 201 are located in the same metal layer, the middle part of each first main touch electrode 201 is located in the same metal layer, and the two ends of the first main touch electrode 201 and the middle part of the first main touch electrode 201 are disposed in different layers.

[0081] from Figure 8 , Figure 9 and Figure 10 As can be seen, in the middle of the touch electrode block 40, the first main touch electrode part 201 and the second main touch electrode part 203 overlap. In the display panel, the signals transmitted by the touch electrode row 10 and the touch electrode column 20 are different, so the two need to be insulated.

[0082] In one example, the two ends of each first touch electrode portion 202, each second touch electrode portion 204, each first main touch electrode portion 201 and each second main touch electrode portion 203 can be disposed on the second metal layer 204, and the middle portion of the second main touch electrode portion 203 can be disposed on the first metal layer 202.

[0083] In another example, the two ends of each first touch electrode portion 202, each second touch electrode portion 204, each second main touch electrode portion 203 and each first main touch electrode portion 201 can be disposed on the second metal layer 204, and the middle portion of the first main touch electrode portion 201 can be placed on the first metal layer 202.

[0084] In some exemplary embodiments, please continue to refer to Figure 2 and Figure 4 In each row of touch electrodes 10, except for the first touch electrodes 21 on both sides, the remaining first touch electrodes 21 are rhomboid in shape; in each column of touch electrodes 20, except for the second touch electrodes 22 on both sides, the remaining second touch electrodes 22 are rhomboid in shape.

[0085] The first touch electrode 21 further includes a plurality of first touch connection portions 211, and the second touch electrode 22 further includes a plurality of second touch connection portions 221. In the first direction, two adjacent first touch electrodes 21 are connected by the first touch connection portions 211, and in the second direction, two adjacent second touch electrodes 22 are connected by the second touch connection portions 221.

[0086] In one example, the first touch electrode 21 and the second touch electrode 22 are located in the second metal layer. Please refer to [link / reference]. Figure 2 and Figure 3 The adjacent second touch electrodes 22 in the second direction are connected by the second touch connection part 221 ( Figure 2 The second touch connection part 221 (not shown) is directly connected, and the first touch electrodes 21 adjacent in the first direction are connected through the first touch connection part 211 located in the first metal layer.

[0087] See another example. Figure 4 and Figure 5 Each adjacent first touch electrode 21 in the first direction is connected by a first touch connection part 211 ( Figure 4 The first touch connection part 211 (marked in the middle) is directly connected to the second touch connection part 221 between two adjacent second touch electrodes 22 through the first metal layer.

[0088] In some exemplary embodiments, please refer to Figure 11 The touch display panel includes multiple second lead-out traces 52, at least a portion of which are connected to the touch electrode row 10 via virtual electrodes 23; the touch display panel includes a display area AA and a non-display area NA that surrounds the display area AA, the non-display area NA including a trace area NA1, the trace area NA1 being located on one side of the display area AA in a second direction;

[0089] Wherein, when the first touch electrode 21 and the second touch electrode 22 meet the first preset condition or the second preset condition, each second lead-out trace 52 is located within the trace area NA1. The first preset condition includes N≤2M, and the second preset condition includes N=2M+1 and the trace connected to the touch electrode row 10 closest to the trace area NA1 is located within the trace area NA1. N is the number of touch electrode rows 10 formed by the first touch electrodes 21 arranged in an array, and M is the number of touch electrode columns 20 formed by the second touch electrodes 22 arranged in an array.

[0090] It is understood that the number of virtual electrode rows 30 that can be set in the display panel is related to the number of touch electrode rows 20. Typically, the number of virtual electrode rows 30 that can be set in the display panel is twice the number of touch electrode rows 20 in the display panel. Therefore, when the number of touch electrode rows 10 is less than or equal to twice the number of touch electrode rows 20, all touch electrode rows 10 in the display panel can be connected to the integrated circuit IC by setting virtual electrode rows 30, thus eliminating the need to set touch traces in the left and right bezel areas of the display panel. Even if the number of touch electrode rows 10 is greater than the number of touch electrode rows 20, only a small number of touch electrode rows 10 will need to set touch traces in the left and right bezel areas of the display panel. Compared to related technologies that set all touch traces of touch electrode rows 10 in the left and right bezel areas, this application can greatly reduce the number of traces in the left and right bezel areas, achieving a narrow bezel design.

[0091] In application, for the touch electrode row 10 closest to the routing area NA1, even without setting the virtual electrode column 30, this touch electrode row 10 can be directly led out from the bottom border without routing in the left and right border areas. For example, please refer to... Figure 11 The touch electrode row is 10-5. Figure 11 The touch electrode row 10, which is closest to the trace area NA1 in the display panel shown, can be directly connected to the integrated circuit IC via the second lead-out trace 52 without relying on the virtual electrode column 30. Therefore, in N=2M+1, each of the second lead-out traces 52 can also be located within the trace area NA1.

[0092] In some exemplary embodiments, based on the same application concept, embodiments of this application also provide a display device. Figure 12 This is a schematic diagram of the structure of the display device 200 provided in the embodiments of this application, as shown below. Figure 12 As shown, the display device 200 includes the display panel 100 in any of the above embodiments. Exemplarily, as... Figure 12As shown, the display device 200 includes a display panel 100. Therefore, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiments. The similarities can be understood with reference to the explanation of the display panel 100 above, and will not be repeated below.

[0093] The display device 200 provided in this application embodiment can be a Figure 12 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A touch display panel, characterized in that, The touch display panel comprises: a plurality of first touch electrodes arranged in an array, each of the first touch electrodes in a first direction being electrically connected; a plurality of second touch electrodes arranged in an array, each of the second touch electrodes in a second direction being electrically connected; a plurality of virtual electrode columns, each of the virtual electrode columns comprising a plurality of virtual electrodes, at least part of each of the virtual electrodes being located between the first touch electrodes and the second touch electrodes arranged adjacently, the virtual electrodes being arranged spaced apart from the first touch electrodes and the second touch electrodes respectively; wherein each of the virtual electrodes of each of the virtual electrode columns is electrically connected and electrically connected to any first touch electrode arranged adjacently, and the first touch electrodes connected by each of the virtual electrode columns are located in different rows, the first direction and the second direction intersecting. 2.The touch display panel of claim 1, wherein, The touch display panel further comprises: a first overlap bridge and a second overlap bridge, the first touch electrodes and the virtual electrodes being electrically connected through the first overlap bridge, and two adjacent virtual electrodes in the virtual electrode column being electrically connected through the second overlap bridge. 3.The touch display panel of claim 2, wherein, Each of the virtual electrodes and each of the first overlap bridges are located in the same metal layer, each of the second overlap bridges is located in the same metal layer, and the virtual electrodes and the second overlap bridges are arranged in different layers. 4.The touch display panel of claim 3, wherein, The touch display panel further comprises: a substrate; a first metal layer located on one side of the substrate; a touch insulation layer located on a side of the first metal layer away from the substrate; a second metal layer located on a side of the touch insulation layer away from the substrate; wherein each of the virtual electrodes and each of the first overlap bridges are located in the second metal layer, and each of the second overlap bridges is located in the first metal layer. 5.The touch display panel of claim 1, wherein, The touch display panel comprises a plurality of touch electrode blocks, each of the touch electrode blocks comprising a first touch electrode and a second touch electrode; the first touch electrode comprises a first main touch electrode part extending in a first direction and a plurality of first branch touch electrode parts connected to the first main touch electrode part, and the second touch electrode comprises a second main touch electrode part extending in a second direction and a plurality of second branch touch electrode parts connected to the second main touch electrode part; wherein the first main touch electrode part and the second main touch electrode part divide the touch electrode block into four sub-areas, each of the sub-areas is provided with one of the first branch touch electrode parts, one of the second branch touch electrode parts, and one of the virtual electrodes, and the virtual electrodes are arranged between the first branch touch electrode parts and the second branch touch electrode parts; the virtual electrodes in two adjacent sub-areas in the second direction belong to the same virtual electrode column, the virtual electrodes in two adjacent sub-areas in the first direction are insulatively arranged, and the virtual electrodes in at least part of two adjacent sub-areas in the second direction are electrically connected. 6.The touch display panel of claim 5, wherein, The touch display panel comprises a plurality of first lead-out wires, at least part of the first lead-out wires being connected to the touch electrodes through the virtual electrodes; the touch display panel further comprises a display area and a non-display area surrounding at least part of the display area, the non-display area comprising a wire area, and the wire area is located on one side of the display area in the second direction; Wherein, in the case that the first touch electrodes and the second touch electrodes satisfy a first preset condition, each of the first lead-out traces is located in the trace area, and the first preset condition comprises N≤2M, N is a number of touch electrode rows formed by the first touch electrodes arranged in an array, and M is a number of touch electrode columns formed by the second touch electrodes arranged in an array. 7.The touch display panel of claim 5, wherein, Both ends of each of the first branch touch electrode parts, each of the second branch touch electrode parts, each of the first main touch electrode parts and each of the second main touch electrode parts are located in a same metal layer, a middle part of each of the second main touch electrode parts is located in the same metal layer, and both ends of the second main touch electrode part and the middle part of the second main touch electrode part are arranged in different layers. Alternatively, both ends of each of the first branch touch electrode parts, each of the second branch touch electrode parts, each of the second main touch electrode parts and each of the first main touch electrode parts are located in a same metal layer, a middle part of each of the first main touch electrode parts is located in the same metal layer, and both ends of the first main touch electrode part and the middle part of the first main touch electrode part are arranged in different layers. 8.The touch display panel of claim 1, wherein, In each of the touch electrode rows, the shapes of the first touch electrodes other than the first touch electrodes at the two most sides are rhombic; and in each of the touch electrode columns, the shapes of the second touch electrodes other than the second touch electrodes at the two most sides are rhombic. Wherein, the first touch electrodes further comprise a plurality of first touch connection parts, and the second touch electrodes further comprise a plurality of second touch connection parts; in a first direction, two adjacent first touch electrodes are connected through a first touch connection part, and in a second direction, two adjacent second touch electrodes are connected through a second touch connection part. 9.The touch display panel of claim 8, wherein, The touch display panel comprises a plurality of second lead-out traces, at least part of the second lead-out traces are connected with the touch electrode rows through the virtual electrodes; the touch display panel comprises a display area and a non-display area surrounding at least part of the display area, the non-display area comprises a trace area, and the trace area is located at one side of the display area in the second direction. Wherein, in the case that the first touch electrodes and the second touch electrodes satisfy a first preset condition or a second preset condition, each of the second lead-out traces is located in the trace area, the first preset condition comprises N≤2M, the second preset condition comprises N=2M+1 and a trace connected with the touch electrode row closest to the trace area is located in the trace area, N is a number of touch electrode rows formed by the first touch electrodes arranged in an array, and M is a number of touch electrode columns formed by the second touch electrodes arranged in an array.

10. A display device, characterized by comprising: The touch display panel comprises a plurality of second lead-out traces, at least part of the second lead-out traces are connected with the touch electrode rows through the virtual electrodes; the touch display panel comprises a display area and a non-display area surrounding at least part of the display area, the non-display area comprises a trace area, and the trace area is located at one side of the display area in the second direction. Wherein, in the case that the first touch electrodes and the second touch electrodes satisfy a first preset condition or a second preset condition, each of the second lead-out traces is located in the trace area, the first preset condition comprises N≤2M, the second preset condition comprises N=2M+1 and a trace connected with the touch electrode row closest to the trace area is located in the trace area, N is a number of touch electrode rows formed by the first touch electrodes arranged in an array, and M is a number of touch electrode columns formed by the second touch electrodes arranged in an array. The touch display panel comprises a plurality of second lead-out traces, at least part of the second lead-out traces are connected with the touch electrode rows through the virtual electrodes; the touch display panel comprises a display area and a non-display area surrounding at least part of the display area, the non-display area comprises a trace area, and the trace area is located at one side of the display area in the second direction.

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