Touch display panel and touch display device

Abstract

The application relates to a touch display panel and a touch display device. The touch display panel comprises a plurality of touch units, the plurality of touch units comprising a plurality of first touch units and at least one special-shaped touch unit; the first touch unit comprises a first touch electrode and a second touch electrode which are insulated from each other; the special-shaped touch unit comprises a third touch electrode and a fourth touch electrode which are insulated from each other; the special-shaped touch unit further comprises a compensation electrode, the compensation electrode is electrically connected with one of the third touch electrode and the fourth touch electrode, and is spaced and insulated from the other one of the third touch electrode and the fourth touch electrode to form a compensation capacitor. The existence of the compensation capacitor makes the total coupling capacitance of the special-shaped touch unit increase, thereby the touch performance of the special-shaped area of the touch display panel can be improved.

Description

Technical Field

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

[0002] With the continuous development of display panel technology, people's demand for large-screen displays is also increasing. However, large-screen display panels (such as those used in full-screen mobile phones) often have irregularly shaped areas, such as rounded corners at the four corners of the display panel, or clearance slots formed by cutting grooves where the front-facing camera is located.

[0003] In related technologies, display panels include a touch layer assembly for implementing touch functionality, comprising an array of touch units. Touch units located in irregularly shaped areas are also irregularly shaped, which degrades touch performance in these areas. Therefore, improving the touch performance in irregularly shaped areas of the display panel is a problem that needs to be addressed. Summary of the Invention

[0004] Therefore, it is necessary to provide a touch display panel and a touch display device to improve the touch performance of irregularly shaped areas of the touch display panel.

[0005] According to one aspect of this application, a touch display panel is provided. The touch display panel includes a plurality of touch units arranged in an array, the plurality of touch units including a plurality of first touch units and at least one irregularly shaped touch unit;

[0006] The first touch unit includes a first touch electrode and a second touch electrode that are insulated from each other.

[0007] The irregularly shaped touch unit includes a third touch electrode and a fourth touch electrode that are insulated from each other;

[0008] The irregularly shaped touch unit further includes a compensation electrode, which is electrically connected to one of the third touch electrode and the fourth touch electrode, and is spaced apart from and insulated from the other of the third touch electrode and the fourth touch electrode to form a compensation capacitor.

[0009] A touch display panel according to an embodiment of this application includes a plurality of first touch units with complete shapes and irregularly shaped touch units with incomplete shapes, wherein the irregularly shaped touch units are located in irregularly shaped areas of the touch display panel. A third touch electrode and a fourth touch electrode are disposed in each irregularly shaped touch unit. A compensation electrode is disposed in each irregularly shaped touch unit, electrically connected to one of the third and fourth touch electrodes, and spaced apart from and insulated from the other of the third and fourth touch electrodes to form a compensation capacitor. The presence of the compensation capacitor increases the total coupling capacitance of the irregularly shaped touch unit, thereby increasing the change in total coupling capacitance caused by touch operations in the irregularly shaped area. This makes touch operations occurring in the irregularly shaped area easier to detect, thus improving the touch sensitivity of the irregularly shaped area of ​​the touch display panel. Therefore, the touch performance of the irregularly shaped area of ​​the touch display panel can be improved.

[0010] In some embodiments, in one of the irregularly shaped touch units, the number of compensation electrodes is at least one; the at least one compensation electrode is electrically connected to the third touch electrode and spaced apart from and insulated from the fourth touch electrode to form a compensation capacitor, or the at least one compensation electrode is electrically connected to the fourth touch electrode and spaced apart from and insulated from the third touch electrode to form a compensation capacitor.

[0011] In some embodiments, in one of the irregularly shaped touch units, the number of compensation electrodes is at least two; at least one of the compensation electrodes is electrically connected to the third touch electrode and spaced apart from and insulated from the fourth touch electrode to form a first compensation capacitor, and the remaining compensation electrodes are electrically connected to the fourth touch electrode and spaced apart from and insulated from the third touch electrode to form a second compensation capacitor.

[0012] In some embodiments, the first touch electrode includes two first touch electrode blocks arranged along a first direction and electrically connected to each other; the second touch electrode includes two second touch electrode blocks arranged along a second direction and electrically connected to each other; the third touch electrode includes two third touch electrode blocks arranged along the first direction and electrically connected to each other; and the fourth touch electrode includes two fourth touch electrode blocks arranged along the second direction and electrically connected to each other.

[0013] In some embodiments, along the first direction, two adjacent touch electrode blocks in two adjacent touch units are electrically connected to each other; along the second direction, two adjacent touch electrode blocks in two adjacent touch units are electrically connected to each other.

[0014] In some embodiments, in the irregularly shaped touch unit, at least one of the two third touch electrode blocks is a first irregularly shaped touch electrode block, and at least one of the two fourth touch electrode blocks is a second irregularly shaped touch electrode block. The area of ​​the first irregularly shaped touch electrode block is smaller than the area of ​​the first touch electrode block, and the area of ​​the second irregularly shaped touch electrode block is smaller than the area of ​​the second touch electrode block. The compensation electrode is electrically connected to one of the first irregularly shaped touch electrode block and the second irregularly shaped touch electrode block, and is spaced apart from and insulated from the other of the first irregularly shaped touch electrode block and the second irregularly shaped touch electrode block to form a compensation capacitor.

[0015] In some embodiments, the first touch electrode block and the second touch electrode block have the same shape and area.

[0016] In some embodiments, both the first touch electrode block and the second touch electrode block are triangular in shape.

[0017] In some embodiments, the first touch electrode block, the second touch electrode block, the third touch electrode block, and the fourth touch electrode block are disposed on the same layer.

[0018] In some embodiments, the first touch electrode further includes at least one first connecting electrode, and two adjacent first touch electrode blocks are electrically connected through the first connecting electrode. The second touch electrode further includes at least one second connecting electrode, and two adjacent second touch electrode blocks are electrically connected through the second connecting electrode. One of the first connecting electrode and the second connecting electrode is disposed in the same layer as the first touch electrode block, and the other of the first connecting electrode and the second connecting electrode is disposed in a different layer from the first touch electrode block. The first connecting electrode and the second connecting electrode are opposite to each other and insulated from each other.

[0019] In some embodiments, the third touch electrode further includes at least one third connecting electrode, and two adjacent third touch electrode blocks are electrically connected through the third connecting electrode; the fourth touch electrode further includes at least one fourth connecting electrode, and two adjacent fourth touch electrode blocks are electrically connected through the fourth connecting electrode; one of the third connecting electrode and the fourth connecting electrode is disposed in the same layer as the third touch electrode block, and the other of the third connecting electrode and the fourth connecting electrode is disposed in a different layer from the third touch electrode block; the third connecting electrode and the fourth connecting electrode are opposite to each other and insulated from each other.

[0020] In some embodiments, the compensation electrode is disposed in the same layer as the third touch electrode block and the fourth touch electrode block.

[0021] In some embodiments, the thickness of the third touch electrode block is greater than the thickness of the first touch electrode block, and the thickness of the fourth touch electrode block is greater than the thickness of the second touch electrode block.

[0022] In some embodiments, in the irregularly shaped touch unit, at least one of the two third touch electrode blocks is a first irregularly shaped touch electrode block, and at least one of the two fourth touch electrode blocks is a second irregularly shaped touch electrode block. The area of ​​the first irregularly shaped touch electrode block is smaller than the area of ​​the first touch electrode block, the area of ​​the second irregularly shaped touch electrode block is smaller than the area of ​​the second touch electrode block, the thickness of the first irregularly shaped touch electrode block is greater than the thickness of the first touch electrode block, the thickness of the second irregularly shaped touch electrode block is greater than the thickness of the second touch electrode block, and the thickness of the compensation electrode is equal to the thickness of the first irregularly shaped touch electrode block and / or the thickness of the second irregularly shaped touch electrode block.

[0023] In some embodiments, the compensation electrode is made of transparent metal oxide, silver, or titanium-aluminum alloy.

[0024] According to another aspect of this application, a touch display device is provided, which includes the touch display panel in any of the above embodiments.

[0025] According to an embodiment of this application, the touch display device includes a touch display panel comprising a plurality of first touch units with complete shapes and irregularly shaped touch units with incomplete shapes, wherein the irregularly shaped touch units are located in irregularly shaped areas of the touch display panel. A third touch electrode and a fourth touch electrode are disposed in each irregularly shaped touch unit. A compensation electrode is disposed in each irregularly shaped touch unit, electrically connected to one of the third and fourth touch electrodes, and spaced apart from and insulated from the other, to form a compensation capacitor. The presence of the compensation capacitor increases the total coupling capacitance of the irregularly shaped touch unit, thereby increasing the change in total coupling capacitance caused by touch operations in the irregularly shaped area. This makes touch operations occurring in the irregularly shaped area easier to detect, thus improving the touch sensitivity of the irregularly shaped area of ​​the touch display panel. Therefore, the touch performance of the irregularly shaped area of ​​the touch display panel can be improved. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the touch layer assembly of a touch display panel in related technologies;

[0027] Figure 2 This is a schematic diagram of the structure of a touch display panel in one embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the first touch unit in one embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the irregularly shaped touch unit in one embodiment of this application;

[0030] Figure 5 for Figure 2 Schematic diagram of the cross section along the AA direction;

[0031] Figure 6 This is a schematic diagram of the structure of a touch display panel in another embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the irregularly shaped touch unit in another embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the structure of a touch display panel in another embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the irregularly shaped touch unit in another embodiment of this application. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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 light-emitting units 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 light-emitting units present.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] With the continuous development of display panel technology, people's demand for large-screen displays is also increasing. However, large-screen display panels (such as those used in full-screen mobile phones) often have irregularly shaped areas, such as rounded corners at the four corners of the display panel, or clearance slots formed by cutting grooves where the front-facing camera is located.

[0044] In related technologies, touch-enabled display panels include a touch layer assembly for implementing touch functionality. This touch layer assembly comprises an array of touch units, each including multiple touch electrode blocks arranged in a staggered pattern. To improve touch accuracy, these multiple block-shaped touch electrode blocks are sequentially connected at opposite corners. For ease of explanation, touch units located in irregularly shaped areas are referred to as irregularly shaped touch units 200'. Touch electrode blocks located at the screen edges are partially missing to accommodate irregular screen designs (e.g., rounded corners). This missing pattern in the touch electrode blocks in irregularly shaped areas results in smaller areas for irregularly shaped touch units compared to conventional touch units. Consequently, the total coupling capacitance of the irregularly shaped touch unit and the change in total coupling capacitance during touch operations in these areas are both smaller. This may lead to touch operations occurring in these areas being undetectable. Therefore, the touch performance of irregularly shaped areas in display panels in related technologies is poor.

[0045] To address the aforementioned issues, the first aspect of this application proposes a touch display panel to improve the touch performance of irregularly shaped areas of the touch display panel.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, the touch display panel 10 in the first aspect embodiment of this application includes a plurality of touch units arranged in an array. The plurality of touch units include a plurality of first touch units 100 and at least one irregularly shaped touch unit 200. The first touch unit 100 includes a first touch electrode 110 and a second touch electrode 120 that are insulated from each other. The irregularly shaped touch unit 200 includes a third touch electrode 210 and a fourth touch electrode 220 that are insulated from each other. The irregularly shaped touch unit 200 also includes a compensation electrode 230, which is electrically connected to one of the third touch electrode 210 and the fourth touch electrode 220, and is spaced apart from and insulated from the other of the third touch electrode 210 and the fourth touch electrode 220 to form a compensation capacitor.

[0047] It is understood that the touch display panel 10 includes irregularly shaped areas, which refer to areas that result in incomplete touch units. That is, due to the constraints of the irregularly shaped areas, the touch units within these areas have incomplete shapes, forming irregularly shaped touch units 200. The first touch unit 100, on the other hand, is a touch unit with a complete shape, also known as a conventional touch unit. For example, a conventional touch unit can be rectangular. Furthermore, because the irregularly shaped touch unit 200 is incomplete in shape—that is, it is missing some features compared to the first touch unit 100—the sum of the areas of the third touch electrode 210 and the fourth touch electrode 220 in the irregularly shaped touch unit 200 is less than the sum of the areas of the first touch electrode 110 and the second touch electrode 120 in the first touch unit 100. The irregularly shaped touch unit 200 and the first touch unit 100 can be distinguished based on this area relationship.

[0048] According to an embodiment of this application, a touch display panel 10 includes a plurality of first touch units 100 with complete shapes and irregularly shaped touch units 200 with incomplete shapes, wherein the irregularly shaped touch units 200 are located in the irregularly shaped area of ​​the touch display panel 10. A third touch electrode 210 and a fourth touch electrode 220 are disposed in the irregularly shaped touch unit 200. A compensation electrode 230 is disposed in the irregularly shaped touch unit 200, which is electrically connected to one of the third touch electrode 210 and the fourth touch electrode 220, and is spaced apart from and insulated from the other of the third touch electrode 210 and the fourth touch electrode 220 to form a compensation capacitor. The presence of the compensation capacitor increases the total coupling capacitance of the irregularly shaped touch unit 200, thereby increasing the change in total coupling capacitance caused by touch operation in the irregularly shaped area, making touch operation in the irregularly shaped area easier to detect, i.e., improving the touch sensitivity of the irregularly shaped area of ​​the touch display panel 10. This can improve the touch performance of the irregularly shaped area of ​​the touch display panel 10.

[0049] It is understood that by setting the compensation electrode 230, the total coupling capacitance of the irregularly shaped touch unit 200 is increased. After compensation, the total coupling capacitance of the irregularly shaped touch unit 200 can be similar to or the same as the total coupling capacitance of the first touch unit 100. In this preferred embodiment, the total coupling capacitance of the irregularly shaped touch unit 200 is the same as that of the first touch unit 100. In this case, the touch sensitivity at all positions on the display panel 10 can be kept the same.

[0050] In addition, the display panel 10 typically includes a display area and a border area surrounding the display area. In a preferred embodiment, the compensation electrode 230 is disposed in the border area of ​​the display panel 10.

[0051] In some embodiments, in a non-circular touch unit 200, the number of compensation electrodes 230 is at least one. This at least one compensation electrode 230 is electrically connected to a third touch electrode 210 and spaced apart from and insulated from a fourth touch electrode 220 to form a compensation capacitor (e.g., ...). Figure 6 and Figure 7 (as shown), or the at least one compensation electrode 230 is electrically connected to the fourth touch electrode 220 and spaced apart from and insulated from the third touch electrode 210 to form a compensation capacitor (such as...). Figure 2 and Figure 4 (As shown).

[0052] Understandably, the purpose of setting up the compensation electrode 230 is to increase the total coupling capacitance between the third touch electrode 210 and the fourth touch electrode 220. Based on this purpose, the compensation electrode 230 can be electrically connected to either the third touch electrode 210 or the fourth touch electrode 220. When the compensation electrode 230 is electrically connected to the third touch electrode 210, it must be opposite to and insulated from the fourth touch electrode 220; when the compensation electrode 230 is electrically connected to the fourth touch electrode 220, it must be opposite to and insulated from the third touch electrode 210. Furthermore, the number of compensation electrodes 230 also affects the total coupling capacitance of the irregularly shaped touch unit 200. Understandably, the more compensation electrodes 230 there are, the larger the total coupling capacitance of the irregularly shaped touch unit 200. Of course, the number of compensation electrodes 230 is often limited by the irregular shape of the area and cannot be excessive. Therefore, the number of compensation electrodes 230 can be set according to the actual situation.

[0053] In some embodiments, such as Figure 8 , Figure 9 As shown, in an irregularly shaped touch unit 200, the number of compensation electrodes 230 is at least two. At least one of the compensation electrodes 230 is electrically connected to the third touch electrode 210 and spaced apart from and insulated from the fourth touch electrode 220 to form a first compensation capacitor. The remaining compensation electrodes 230 are electrically connected to the fourth touch electrode 220 and spaced apart from and insulated from the third touch electrode 210 to form a second compensation capacitor.

[0054] It is understandable that the more compensation electrodes 230 there are, the larger the total coupling capacitance of the irregularly shaped touch unit 200, and the more significant the improvement in touch sensitivity of the irregularly shaped area of ​​the touch display panel 10. Therefore, how to set up a larger number of compensation electrodes 230 is a problem that needs to be considered. In this embodiment, at least one of the multiple compensation electrodes 230 is electrically connected to the third touch electrode 210, and the remaining compensation electrodes 230 are electrically connected to the fourth touch electrode 220. This is more conducive to arranging a larger number of compensation electrodes 230 in a limited space, thereby maximizing the improvement in touch sensitivity of the irregularly shaped area of ​​the touch display panel 10.

[0055] In some embodiments, such as Figure 3 , Figure 4 As shown, the first touch electrode 110 includes two first touch electrode blocks 111 arranged along a first direction and electrically connected to each other; the second touch electrode 120 includes two second touch electrode blocks 121 arranged along a second direction and electrically connected to each other; the third touch electrode 210 includes two third touch electrode blocks 211 arranged along a first direction and electrically connected to each other; and the fourth touch electrode 220 includes two fourth touch electrode blocks 221 arranged along a second direction and electrically connected to each other.

[0056] It is understood that the first touch electrode 110 includes two first touch electrode blocks 111 arranged along a first direction and electrically connected to each other, and the second touch electrode 120 includes two second touch electrode blocks 121 arranged along a second direction and electrically connected to each other. Multiple edge groups are formed between the first touch electrode blocks 111 and the second touch electrode blocks 121. Each edge group includes a pair of closely spaced and parallel edge portions (one edge portion belongs to the first touch electrode block 111, and the other edge portion belongs to the second touch electrode block 121). Each edge group provides a certain coupling capacitance. The total coupling capacitance of the first touch unit 100 mainly comes from the coupling capacitance provided by these edge groups.

[0057] Similarly, the third touch electrode 210 includes two third touch electrode blocks 211 arranged along the first direction and electrically connected to each other, and the fourth touch electrode 220 includes two fourth touch electrode blocks 221 arranged along the second direction and electrically connected to each other. Multiple edge groups are formed between the third touch electrode blocks 211 and the fourth touch electrode blocks 221. Each edge group includes a pair of closely spaced and parallel edge portions (one edge portion belongs to the third touch electrode block 211, and the other edge portion belongs to the fourth touch electrode block 221). Each edge group provides a certain coupling capacitance. The total coupling capacitance of the irregularly shaped touch unit 200 mainly comes from the coupling capacitance provided by these edge groups.

[0058] Understandably, please refer to Figure 1 and Figure 2In this embodiment, the first touch electrode block 111, the second touch electrode block 121, the third touch electrode block 211, and the fourth touch electrode block 221 all correspond to a portion of the rhomboid electrode block in the figure. Alternatively, it can be understood that the first touch electrode block 111, the second touch electrode block 121, the third touch electrode block 211, and the fourth touch electrode block 221 are all triangular touch electrode blocks. Therefore, the touch unit in this application is a touch electrode assembly comprising multiple triangular touch electrode blocks. In actual product manufacturing, to simplify the process and structure, two adjacent touch electrode blocks in two adjacent touch units can be made into a single structure, achieving electrical connection and simplifying the process and structure. For example, for two adjacent touch units along the first direction, the two adjacent first touch electrode blocks 111 can form a complete rhomboid touch electrode block, or the adjacent third touch electrode block 211 and the first touch electrode block 111 can form a complete rhomboid touch electrode block. For two adjacent touch units along the second direction, the two adjacent second touch electrode blocks 121 can form a complete rhombus-shaped touch electrode block, or the adjacent fourth touch electrode block 221 and the second touch electrode block 121 can form a complete rhombus-shaped touch electrode block.

[0059] In some embodiments, such as Figure 4 , Figure 7 and Figure 9 As shown, at least one of the two third touch electrode blocks 211 is a first irregularly shaped touch electrode block 2111, and at least one of the two fourth touch electrode blocks 221 is a second irregularly shaped touch electrode block 2211. The area of ​​the first irregularly shaped touch electrode block 2111 is smaller than the area of ​​the first touch electrode block 111, and the area of ​​the second irregularly shaped touch electrode block 2211 is smaller than the area of ​​the second touch electrode block 121. The compensation electrode 230 is electrically connected to one of the first irregularly shaped touch electrode blocks 2111 and the second irregularly shaped touch electrode block 2211, and is spaced apart from and insulated from the other of the first irregularly shaped touch electrode blocks 2111 and the second irregularly shaped touch electrode block 2211 to form a compensation capacitor.

[0060] Due to the limitations of the irregularly shaped area of ​​the touch display panel 10, the shape of the irregularly shaped touch unit 200 is incomplete. That is, the shapes of the third touch electrode 210 and the fourth touch electrode 220 are typically incomplete. This means that in an irregularly shaped touch unit 200, at least one of the two third touch electrode blocks 211 is a first irregularly shaped touch electrode block 2111, and at least one of the two fourth touch electrode blocks 221 is a second irregularly shaped touch electrode block 2211. Here, an irregularly shaped touch electrode block refers to a touch electrode block with an incomplete shape, i.e., the area of ​​the first irregularly shaped touch electrode block 2111 is smaller than the area of ​​the first touch electrode block 111, and the area of ​​the second irregularly shaped touch electrode block 2211 is smaller than the area of ​​the second touch electrode block 121.

[0061] In this embodiment, the compensation electrode 230 is electrically connected to one of the first irregularly shaped touch electrode block 2111 and the second irregularly shaped touch electrode block 2211, and is spaced apart from and insulated from the other of the first irregularly shaped touch electrode block 2111 and the second irregularly shaped touch electrode block 2211. That is, the compensation capacitor is formed at the location of the irregularly shaped touch electrode block. Since the irregularly shaped touch electrode block is closest to the edge of the irregularly shaped area of ​​the touch display panel 10, and the edge of the irregularly shaped area is often the location with the worst touch sensitivity, in this embodiment, forming the compensation capacitor closest to the edge of the irregularly shaped area allows for targeted improvement of the location with the worst touch sensitivity, thereby increasing the touch sensitivity at the edge of the irregularly shaped area.

[0062] In some embodiments, the first touch electrode block 111 and the second touch electrode block 121 have the same shape and area. This arrangement helps to reduce the complexity of the touch unit manufacturing, thereby improving manufacturing accuracy.

[0063] In some embodiments, the first touch electrode block 111 and the second touch electrode block 121 are both triangular in shape. This arrangement allows four edge groups to be formed between the two first touch electrode blocks 111 and the two second touch electrode blocks 121 in each first touch unit 100. Each edge group includes a pair of closely spaced and parallel edge portions (one edge portion belongs to the first touch electrode block 111 and the other edge portion belongs to the second touch electrode block 121), and each edge group provides a certain coupling capacitance.

[0064] In some embodiments, the first touch electrode block 111, the second touch electrode block 121, the third touch electrode block 211, and the fourth touch electrode block 221 are disposed in the same layer. This arrangement helps to reduce the thickness of the touch display panel 10 and also simplifies the manufacturing process.

[0065] In some embodiments, such as Figure 3 , Figure 4 and Figure 5As shown, the first touch electrode 110 further includes at least one first connecting electrode 112, and two adjacent first touch electrode blocks 111 are electrically connected through the first connecting electrode 112. The second touch electrode 120 further includes at least one second connecting electrode 122, and two adjacent second touch electrode blocks 121 are electrically connected through the second connecting electrode 122. One of the first connecting electrode 112 and the second connecting electrode 122 is disposed in the same layer as the first touch electrode block 111, and the other of the first connecting electrode 112 and the second connecting electrode 122 is disposed in a different layer from the first touch electrode block 111. The first connecting electrode 112 and the second connecting electrode 122 are opposite to each other and insulated from each other (an insulating layer is disposed between them).

[0066] In this embodiment, the first connecting electrode 112 is used to electrically connect two adjacent first touch electrodes 110, and the second connecting electrode 122 is used to electrically connect two adjacent second touch electrode blocks 121. One of the first connecting electrode 112 and the second connecting electrode 122 is disposed in the same layer as the first touch electrode block 111, and the other is disposed in a different layer from the first touch electrode block 111. This ensures that the first connecting electrode 112 and the second connecting electrode 122 are on different layers, preventing them from contacting each other and maintaining insulation. Furthermore, since the first connecting electrode 112 and the second connecting electrode 122 are opposite to each other and insulated, a certain coupling capacitance will also be generated between them. Therefore, a portion of the total coupling capacitance of the first touch unit 100 also originates from the coupling capacitance between the first connecting electrode 112 and the second connecting electrode 122.

[0067] In some embodiments, the third touch electrode 210 further includes at least one third connecting electrode 212, and two adjacent third touch electrode blocks 211 are electrically connected through the third connecting electrode 212. The fourth touch electrode 220 further includes at least one fourth connecting electrode 222, and two adjacent fourth touch electrode blocks 221 are electrically connected through the fourth connecting electrode 222. One of the third connecting electrode 212 and the fourth connecting electrode 222 is disposed in the same layer as the third touch electrode block 211, and the other of the third connecting electrode 212 and the fourth connecting electrode 222 is disposed in a different layer from the third touch electrode block 211. The third connecting electrode 212 and the fourth connecting electrode 222 are opposite to each other and insulated from each other.

[0068] In this embodiment, the third connecting electrode 212 is used to electrically connect two adjacent third touch electrodes 210, and the fourth connecting electrode 222 is used to electrically connect two adjacent fourth touch electrode blocks 221. One of the third connecting electrode 212 and the fourth connecting electrode 222 is disposed on the same layer as the third touch electrode block 211, and the other is disposed on a different layer from the third touch electrode block 211. This ensures that the third connecting electrode 212 and the fourth connecting electrode 222 are on different layers, preventing them from contacting each other and maintaining insulation. In addition, since the third connecting electrode 212 and the fourth connecting electrode 222 are opposite to each other and insulated, a certain coupling capacitance will also be generated between them. Therefore, a portion of the total coupling capacitance of the irregular touch unit 200 also comes from the coupling capacitance between the third connecting electrode 212 and the fourth connecting electrode 222.

[0069] In some embodiments, the compensation electrode 230 is disposed in the same layer as the third touch electrode block 211 and the fourth touch electrode block 221. This does not increase the number of film layers or the complexity of the fabrication process.

[0070] In some embodiments, the thickness of the third touch electrode block 211 is greater than the thickness of the first touch electrode block 111, and the thickness of the fourth touch electrode block 221 is greater than the thickness of the second touch electrode block 121. That is, the thickness of the touch electrode blocks in the irregularly shaped touch unit 200 is greater than the thickness of the touch electrode blocks in the first touch unit 100, which means that the thickness of the touch electrode blocks in the irregularly shaped touch unit 200 is increased. As a result, the area of ​​the opposite portions of a pair of edge portions in the edge group formed by the third touch electrode block 211 and the fourth touch electrode block 221 can be increased, thereby increasing the coupling capacitance provided by the edge group, and further increasing the total coupling capacitance of the irregularly shaped touch unit 200, so as to further improve the touch performance of the irregularly shaped area of ​​the touch display panel 10.

[0071] In some embodiments, in the irregularly shaped touch unit, at least one of the two third touch electrode blocks 211 is a first irregularly shaped touch electrode block 2111, and at least one of the two fourth touch electrode blocks 221 is a second irregularly shaped touch electrode block 2211. The area of ​​the first irregularly shaped touch electrode block 2111 is smaller than the area of ​​the first touch electrode block 111, the area of ​​the second irregularly shaped touch electrode block 2211 is smaller than the area of ​​the second touch electrode block 121, the thickness of the first irregularly shaped touch electrode block 2111 is greater than the thickness of the first touch electrode block 111, the thickness of the second irregularly shaped touch electrode block 2211 is greater than the thickness of the second touch electrode block 121, and the thickness of the compensation electrode 230 is equal to the thickness of the first irregularly shaped touch electrode block 2111 and / or the thickness of the second irregularly shaped touch electrode block 2211.

[0072] Since the irregularly shaped touch electrode blocks are closest to the edge of the irregularly shaped area of ​​the touch display panel 10, and the edge of the irregularly shaped area is often the location with the worst touch sensitivity, in this embodiment, the thickness of the first irregularly shaped touch electrode block 2111 and the second irregularly shaped touch electrode block 2211 is increased, thereby increasing the area of ​​the opposite portion of the pair of edges between the first irregularly shaped touch electrode block 2111 and the second irregularly shaped touch electrode block 2211. This increases the coupling capacitance formed between the first irregularly shaped touch electrode block 2111 and the second irregularly shaped touch electrode block 2211, which can specifically improve the location with the worst touch sensitivity, making the improvement effect most obvious at the location with the worst touch sensitivity.

[0073] Furthermore, by setting the thickness of the compensation electrode 230 to be equal to the thickness of the first irregularly shaped touch electrode block 2111 and / or the thickness of the second irregularly shaped touch electrode block 2211, the compensation electrode 230 with a smaller area can be used while increasing the coupling capacitance, which is beneficial for the setting of the compensation electrode 230.

[0074] In some embodiments, the compensation electrode 230 is made of transparent metal oxide, silver, or titanium-aluminum alloy.

[0075] In related technologies, the first touch electrode 110, the second touch electrode 120, the third touch electrode 210, and the fourth touch electrode 220 are mostly made of transparent metal oxides, such as ITO (Indium Tin Oxides), to improve the transmittance of the touch display panel 10. The compensation electrode 230 can be made of the same material as the third touch electrode 210 and the fourth touch electrode 220, namely, a transparent metal oxide. This simplifies the manufacturing process and does not affect the transmittance of the touch display panel 10. Alternatively, the compensation electrode 230 can be made of a metal with lower sheet resistance, such as silver or titanium-aluminum alloy. This allows for a larger compensation capacitance, thereby better improving the touch performance of irregularly shaped areas of the touch display panel 10.

[0076] The second aspect of this application provides a touch display device, which includes the touch display panel 10 in any of the embodiments of the first aspect described above.

[0077] According to an embodiment of this application, the touch display device has a touch display panel 10 comprising a plurality of first touch units 100 with complete shapes and irregularly shaped touch units 200 with incomplete shapes, wherein the irregularly shaped touch units 200 are located in the irregularly shaped area of ​​the touch display panel 10. A third touch electrode 210 and a fourth touch electrode 220 are disposed in the irregularly shaped touch unit 200. A compensation electrode 230 is disposed in the irregularly shaped touch unit 200, which is electrically connected to one of the third touch electrode 210 and the fourth touch electrode 220, and is spaced apart from and insulated from the other of the third touch electrode 210 and the fourth touch electrode 220 to form a compensation capacitor. The presence of the compensation capacitor increases the total coupling capacitance of the irregularly shaped touch unit 200, thereby increasing the change in total coupling capacitance caused by touch operation in the irregularly shaped area, making touch operation in the irregularly shaped area easier to detect, i.e., improving the touch sensitivity of the irregularly shaped area of ​​the touch display panel 10. This can improve the touch performance of the irregularly shaped area of ​​the touch display panel 10.

[0078] 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.

[0079] 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, It includes multiple touch units arranged in an array, wherein the multiple touch units include multiple first touch units and at least one irregularly shaped touch unit; The first touch unit includes a first touch electrode and a second touch electrode that are insulated from each other. The irregularly shaped touch unit includes a third touch electrode and a fourth touch electrode that are insulated from each other; The third touch electrode includes two third touch electrode blocks arranged along a first direction and electrically connected to each other; the fourth touch electrode includes two fourth touch electrode blocks arranged along a second direction and electrically connected to each other; in the irregular-shaped touch unit, at least one of the two third touch electrode blocks is a first irregular-shaped touch electrode block, and at least one of the two fourth touch electrode blocks is a second irregular-shaped touch electrode block; the second irregular-shaped touch electrode block has a groove on the side near the first irregular-shaped touch electrode block; In one of the irregularly shaped touch units, the number of compensation electrodes is at least two; at least one of the compensation electrodes is electrically connected to the first irregularly shaped touch electrode block and spaced apart from and insulated from the second irregularly shaped touch electrode block to form a first compensation capacitor, and at least a portion of the at least one compensation electrode is located within the groove; the remaining compensation electrodes are electrically connected to the second irregularly shaped touch electrode block and spaced apart from and insulated from the first irregularly shaped touch electrode block to form a second compensation capacitor, and the remaining compensation electrodes are arranged around a portion of the first irregularly shaped touch electrode block and a portion of the at least one compensation electrode.

2. The touch display panel according to claim 1, characterized in that, The first touch electrode includes two first touch electrode blocks arranged along a first direction and electrically connected to each other, and the second touch electrode includes two second touch electrode blocks arranged along a second direction and electrically connected to each other.

3. The touch display panel according to claim 2, characterized in that, Along the first direction, two adjacent touch electrode blocks in two adjacent touch units are electrically connected to each other; along the second direction, two adjacent touch electrode blocks in two adjacent touch units are electrically connected to each other.

4. The touch display panel according to claim 2, characterized in that, The area of ​​the first irregularly shaped touch electrode block is smaller than the area of ​​the first touch electrode block, and the area of ​​the second irregularly shaped touch electrode block is smaller than the area of ​​the second touch electrode block.

5. The touch display panel according to claim 2, characterized in that, The first touch electrode block and the second touch electrode block have the same shape and area.

6. The touch display panel according to claim 5, characterized in that, Both the first touch electrode block and the second touch electrode block are triangular in shape.

7. The touch display panel according to claim 2, characterized in that, The first touch electrode block, the second touch electrode block, the third touch electrode block, and the fourth touch electrode block are arranged in the same layer.

8. The touch display panel according to claim 2, characterized in that, The first touch electrode further includes at least one first connecting electrode, and two adjacent first touch electrode blocks are electrically connected through the first connecting electrode. The second touch electrode further includes at least one second connecting electrode, and two adjacent second touch electrode blocks are electrically connected through the second connecting electrode. One of the first connecting electrode and the second connecting electrode is disposed in the same layer as the first touch electrode block, and the other of the first connecting electrode and the second connecting electrode is disposed in a different layer from the first touch electrode block. The first connecting electrode and the second connecting electrode are opposite to each other and insulated from each other.

9. The touch display panel according to claim 1, characterized in that, The third touch electrode further includes at least one third connecting electrode, and two adjacent third touch electrode blocks are electrically connected through the third connecting electrode. The fourth touch electrode further includes at least one fourth connecting electrode, and two adjacent fourth touch electrode blocks are electrically connected through the fourth connecting electrode. One of the third connecting electrode and the fourth connecting electrode is disposed in the same layer as the third touch electrode block, and the other of the third connecting electrode and the fourth connecting electrode is disposed in a different layer from the third touch electrode block. The third connecting electrode and the fourth connecting electrode are opposite to each other and insulated from each other.

10. The touch display panel according to claim 1, characterized in that, The compensation electrode is disposed in the same layer as the third touch electrode block and the fourth touch electrode block.

11. The touch display panel according to claim 2, characterized in that, The thickness of the third touch electrode block is greater than the thickness of the first touch electrode block, and the thickness of the fourth touch electrode block is greater than the thickness of the second touch electrode block. Alternatively, the thickness of the first irregularly shaped touch electrode block is greater than the thickness of the first touch electrode block, the thickness of the second irregularly shaped touch electrode block is greater than the thickness of the second touch electrode block, and the thickness of the compensation electrode is equal to the thickness of the first irregularly shaped touch electrode block and / or the thickness of the second irregularly shaped touch electrode block.

12. The touch display panel according to claim 1, characterized in that, The compensation electrode is made of transparent metal oxide, silver, or titanium-aluminum alloy.

13. A touch display device, characterized in that, Including the touch display panel as described in any one of claims 1 to 12.

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