Touch panels and electronic devices

Abstract

A touch panel and an electronic device, the touch panel comprising: a substrate; a plurality of first touch electrodes arranged on the substrate and extending along a first direction, at least one of the first touch electrodes comprising a plurality of first sub-electrodes electrically connected to each other and a plurality of first connecting sub-portions located between two adjacent first sub-electrodes and electrically connecting the two adjacent first sub-electrodes; and a plurality of second touch electrodes arranged on the substrate and extending along a second direction, the second direction intersecting with the first direction, at least one second touch electrode comprising a plurality of second sub-electrodes electrically connected to each other and a plurality of second connecting sub-portions located between two adjacent second sub-electrodes and electrically connecting the two adjacent second sub-electrodes; wherein the at least one first connecting sub-portion and the at least one second connecting sub-portion have at least a partial overlapping area, and the stacked structure formed is a connecting portion, There are multiple connecting parts, the first touch electrode and the second touch electrode are electrically insulated from each other; a touch area and a non-touch area surrounding the touch area are provided on the touch panel, the multiple first touch electrodes and the multiple second touch electrodes are all located in the touch area, the multiple connecting parts include a first connecting part, a second connecting part and a third connecting part which are arranged in sequence away from the non-touch area along a first direction, the first connecting part is adjacent to the second connecting part along the first direction, and the second connecting part is adjacent to the third connecting part along the first direction, and a distance between a center of an orthographic projection of the first connecting part on the substrate and a center of an orthographic projection of the second connecting part on the substrate is smaller than a distance between a center of an orthographic projection of the second connecting part on the substrate and a center of an orthographic projection of the third connecting part on the substrate.

Description

Technical Field

[0001] The present disclosure relates to the field of touch technology, and in particular to a touch panel and an electronic device. Background Art

[0002] With the diversification of human needs, mechanical watches, as an early device for timing, have been enriched in functions. For example, while meeting the need for timing, people began to add flexible rotating mechanical wheels to the periphery of mechanical watches for fast conversion of multiple time zones, unit conversion, speed measurement, direction identification, etc. It can be said that watches became a necessity in people's lives in the early days, so mechanical watches play an extremely important role in human social life. At the same time, with the continuous advancement of today's semiconductor technology, wearable electronic watches have also emerged. These products are widely sought after by young people because of their eye-catching multimedia interface design and comfortable human-computer interaction experience.

[0003] Public Content

[0004] Some embodiments of the present disclosure provide a touch panel, comprising: a substrate; a plurality of first touch electrodes, arranged on the substrate and extending along a first direction, at least one of the first touch electrodes comprising a plurality of first sub-electrodes electrically connected to each other and a plurality of first connecting sub-portions located between two adjacent first sub-electrodes and electrically connecting the two adjacent first sub-electrodes; and a plurality of second touch electrodes, arranged on the substrate and extending along a second direction, the second direction intersecting with the first direction, at least one second touch electrode comprising a plurality of second sub-electrodes electrically connected to each other and a plurality of second connecting sub-portions located between two adjacent second sub-electrodes and electrically connecting the two adjacent second sub-electrodes; wherein the at least one first connecting sub-portion and the at least one second connecting sub-portion have at least a partial overlapping area, and the stacked structure formed is a connecting portion, There are multiple connecting parts, the first touch electrode and the second touch electrode are electrically insulated from each other; a touch area and a non-touch area surrounding the touch area are provided on the touch panel, the multiple first touch electrodes and the multiple second touch electrodes are all located in the touch area, the multiple connecting parts include a first connecting part, a second connecting part and a third connecting part which are arranged in sequence away from the non-touch area along a first direction, the first connecting part is adjacent to the second connecting part along the first direction, and the second connecting part is adjacent to the third connecting part along the first direction, and a distance between a center of an orthographic projection of the first connecting part on the substrate and a center of an orthographic projection of the second connecting part on the substrate is smaller than a distance between a center of an orthographic projection of the second connecting part on the substrate and a center of an orthographic projection of the third connecting part on the substrate.

[0005] In some embodiments, the at least one first touch electrode includes a first first sub-electrode, a second first sub-electrode, and a third first sub-electrode arranged in sequence away from the non-touch area along the first direction, the first first sub-electrode is adjacent to the second first sub-electrode and the second first sub-electrode is adjacent to the third first sub-electrode, the first first sub-electrode is adjacent to the non-touch area, the first connecting portion is located between the first first sub-electrode and the second first sub-electrode, and is electrically connected to both the first first sub-electrode and the second first sub-electrode, the second connecting portion is located between the second first sub-electrode and the third first sub-electrode, and is electrically connected to both the second first sub-electrode and the third first sub-electrode, and the third connecting portion is located on a side of the third first sub-electrode away from the second connecting portion, and is electrically connected to the third first sub-electrode.

[0006] In some embodiments, the multiple connection parts include a fourth connection part, a fifth connection part and a sixth connection part which are sequentially away from the non-touch area along the second direction, the fourth connection part is adjacent to the fifth connection part along the first direction and the fifth connection part is adjacent to the sixth connection part along the first direction, and the distance between the center of the orthographic projection of the fourth connection part on the substrate and the center of the orthographic projection of the fifth connection part on the substrate is smaller than the distance between the center of the orthographic projection of the fifth connection part on the substrate and the center of the orthographic projection of the sixth connection part on the substrate.

[0007] In some embodiments, the at least one second touch electrode includes a first second sub-electrode, a second second sub-electrode and a third second sub-electrode arranged in sequence away from the non-touch area along the first direction, the first second sub-electrode is adjacent to the second second sub-electrode and the second second sub-electrode is adjacent to the third second sub-electrode, the first second sub-electrode is adjacent to the non-touch area, the fourth connecting portion is located between the first second sub-electrode and the second second sub-electrode, and is electrically connected to both the first second sub-electrode and the second second sub-electrode, the fifth connecting portion is located between the second second sub-electrode and the third second sub-electrode, and is electrically connected to both the second second sub-electrode and the third second sub-electrode, and the sixth connecting portion is located on the side of the third second sub-electrode away from the fifth connecting portion, and is electrically connected to the third second sub-electrode.

[0008] In some embodiments, the difference between the distance between the center of the orthographic projection of the first connecting portion on the substrate and the center of the orthographic projection of the second connecting portion on the substrate and the distance between the center of the orthographic projection of the second connecting portion on the substrate and the center of the orthographic projection of the third connecting portion on the substrate is less than or equal to 1 / 2 of the maximum length of the third first sub-electrode between the second connecting portion and the third connecting portion along the first direction.

[0009] In some embodiments, the difference between the distance between the center of the orthographic projection of the first connecting portion on the substrate and the center of the orthographic projection of the second connecting portion on the substrate and the distance between the center of the orthographic projection of the second connecting portion on the substrate and the center of the orthographic projection of the third connecting portion on the substrate is equal to approximately 1 / 4 of the maximum length of the third first sub-electrode between the second connecting portion and the third connecting portion along the first direction.

[0010] In some embodiments, the areas of the first first sub-electrode and the second first sub-electrode adjacent to the first connecting portion each account for 50% to 100% of the area of ​​the third first sub-electrode between the second connecting portion and the third connecting portion.

[0011] In some embodiments, the areas of the two second sub-electrodes adjacent to the first connection portion each account for 50% to 100% of the area of ​​the second sub-electrode further away from the non-touch area among the two second sub-electrodes adjacent to and electrically connected to the third connection portion.

[0012] In some embodiments, the areas of the first first sub-electrode and the second first sub-electrode adjacent to the first connecting portion and the areas of the two second sub-electrodes adjacent to the first connecting portion are smaller than the area of ​​the third first sub-electrode between the second connecting portion and the third connecting portion.

[0013] In some embodiments, the difference between the distance between the center of the orthographic projection of the fourth connecting portion on the substrate and the center of the orthographic projection of the fifth connecting portion on the substrate and the distance between the center of the orthographic projection of the fifth connecting portion on the substrate and the center of the orthographic projection of the sixth connecting portion on the substrate is less than or equal to 1 / 2 of the maximum length of the third second sub-electrode between the fifth connecting portion and the sixth connecting portion along the second direction.

[0014] In some embodiments, the difference between the distance between the center of the orthographic projection of the fourth connecting portion on the substrate and the center of the orthographic projection of the fifth connecting portion on the substrate and the distance between the center of the orthographic projection of the fifth connecting portion on the substrate and the center of the orthographic projection of the sixth connecting portion on the substrate is equal to approximately 1 / 4 of the maximum length of the third second sub-electrode between the fifth connecting portion and the sixth connecting portion along the second direction.

[0015] In some embodiments, the areas of the first second sub-electrode and the second second sub-electrode adjacent to the fourth connecting portion each account for 50% to 100% of the area of ​​the third second sub-electrode between the fifth connecting portion and the sixth connecting portion.

[0016] In some embodiments, the areas of the two first sub-electrodes adjacent to the fourth connection portion each account for 50% to 100% of the area of ​​the first sub-electrode further away from the non-touch region among the two first sub-electrodes adjacent to and electrically connected to the sixth connection portion.

[0017] In some embodiments, the areas of the first second sub-electrode and the second second sub-electrode adjacent to the fourth connecting portion and the areas of the two first sub-electrodes adjacent to the fourth connecting portion are smaller than the area of ​​the third second sub-electrode between the fifth connecting portion and the sixth connecting portion.

[0018] In some embodiments, at least a portion of a boundary between the touch area and the non-touch area is arc-shaped.

[0019] In some embodiments, for a connecting portion among the multiple connecting portions, the connecting portion includes: a first connecting sub-portion, extending along the first direction, electrically connecting the two first sub-electrodes adjacent to each other along the first direction; and a second connecting sub-portion, extending along the second direction, electrically connecting the two second sub-electrodes adjacent to each other along the second direction.

[0020] In some embodiments, one of the first connecting sub-part and the second connecting sub-part and the first touch electrode and the second touch electrode are located in the first electrode layer; the other of the first connecting sub-part and the second connecting sub-part is located in the second electrode layer; and an insulating layer is provided between the first electrode layer and the second electrode layer.

[0021] In some embodiments, the first connecting sub-portion and the two adjacent first sub-electrodes along the first direction are an integral structure, and the second connecting sub-portion is electrically connected to the two adjacent second sub-electrodes along the second direction through a via hole penetrating the insulating layer.

[0022] In some embodiments, the second connecting sub-portion and the two second sub-electrodes adjacent to each other along the second direction are an integral structure, and the first connecting sub-portion is electrically connected to the two first sub-electrodes adjacent to each other along the first direction through a via hole penetrating the insulating layer.

[0023] In some embodiments, a maximum length of the first connection sub-portion along the first direction is equal to about 1 / 4 of a maximum length of the first sub-electrode between the second connection portion and the third connection portion along the first direction.

[0024] In some embodiments, the maximum length of the second connecting sub-portion along the second direction is equal to about 1 / 4 of the maximum length of one of the two second sub-electrodes adjacent to and electrically connected to the third connecting portion and farther away from the non-touch region along the second direction.

[0025] In some embodiments, the first connecting sub-portion includes a first first connecting sub-portion and a second first connecting sub-portion spaced apart in the second direction, the first first connecting sub-portion is bent toward the second first connecting sub-portion, and the second first connecting sub-portion is bent toward the first first connecting sub-portion.

[0026] In some embodiments, the bending portion of at least one of the first first connecting sub-portion and the second first connecting sub-portion is a rounded corner.

[0027] In some embodiments, a bending angle of at least one of the first first connecting sub-portion and the second first connecting sub-portion is 130° to 150°.

[0028] In some embodiments, the connecting portion also includes a first via, a second via, a third via and a fourth via, and the first first connecting sub-portion is electrically connected to two first sub-electrodes adjacent to each other along the first direction through the first via and the second via, respectively, and the second first connecting sub-portion is electrically connected to the two first sub-electrodes adjacent to each other along the first direction through the third via and the fourth via, respectively.

[0029] In some embodiments, the edge of the second connecting sub-portion includes: a first fold line segment, disposed facing the first via hole and extending along a third direction; a second fold line segment, disposed facing the second via hole and extending along a fourth direction; a third fold line segment, disposed facing the third via hole and extending along the fourth direction; and a fourth fold line segment, disposed facing the fourth via hole and extending along the third direction, wherein the third direction and the fourth direction both intersect with each of the first direction and the second direction, and the third direction intersects with the fourth direction, the first fold line segment is connected to the third fold line segment, and the second fold line segment is connected to the fourth fold line segment.

[0030] In some embodiments, the first via, the second via, the third via, and the fourth via are all rectangular, the long sides of the first via and the fourth via are parallel to the third direction, and the long sides of the second via and the third via are parallel to the fourth direction.

[0031] In some embodiments, for at least one connecting portion, at least one first sub-electrode adjacent to and electrically connected to the connecting portion and at least one second sub-electrode adjacent to and electrically connected to the connecting portion are arranged adjacent to each other, and the boundary between the first sub-electrode and the second sub-electrode is in the shape of a broken line.

[0032] In some embodiments, the multiple connecting parts constitute a connecting part array, and the connecting part array includes a plurality of connecting part columns extending along a first direction and a plurality of connecting part rows extending along a second direction, and the centers of the orthographic projections of the connecting parts in the connecting part column closest to the non-touch area on the substrate are on a straight line, and the centers of the orthographic projections of the connecting parts in the connecting part row closest to the non-touch area on the substrate are on a straight line.

[0033] In some embodiments, one of the first touch electrode and the second touch electrode is a touch driving electrode, and one of the first touch electrode and the second touch electrode is a touch sensing electrode.

[0034] Some embodiments of the present disclosure provide an electronic device, comprising the touch panel described in the aforementioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present disclosure will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0036] Figure 1 is a schematic diagram of a planar structure of a touch panel according to some embodiments of the present disclosure;

[0037] Figure 2 for Figure 1 Schematic diagram of the A area in the middle;

[0038] Figure 3 It is a partial plan view schematic diagram of a touch panel in the related art;

[0039] Figure 4 for Figure 1 Schematic diagram of the middle B area;

[0040] Figure 5 It is a partial plan view schematic diagram of a touch panel in the related art;

[0041] Figure 6 is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure;

[0042] Figure 7 for Figure 6 A schematic cross-sectional view of the structure along line E-E';

[0043] Figure 8 is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure;

[0044] Fig. 9 for Figure 8 A schematic cross-sectional view of the structure along line E-E';

[0045] Fig.10is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure;

[0046] Fig.11 for Figure 2 and Figure 3 Schematic diagram of the comparison of the structures shown;

[0047] Fig.12 for Figure 4 and Figure 5 Schematic diagram of the comparison of the structures shown;

[0048] Fig.13 is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure;

[0049] Fig.14 for Fig.13 A magnified schematic diagram of the middle region Z; and

[0050] Fig.15 It is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0051] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0052] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0053] In addition, in the following detailed description, for the purpose of explanation, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details.

[0054] It should be understood that, although the terms first, second, etc. can be used here to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the exemplary embodiment, the first element can be named as the second element, and similarly, the second element can be named as the first element. The term "and / or" as used herein includes any combination and all combinations of one or more related listed items.

[0055] It should be understood that when an element or layer is referred to as being "formed on" another element or layer, the element or layer may be formed directly or indirectly on the other element or layer. That is, for example, there may be an intermediate element or intermediate layer. In contrast, when an element or layer is referred to as being "formed directly on" another element or layer, there are no intermediate elements or intermediate layers. Other words used to describe the relationship between elements or layers (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.) should be interpreted in a similar manner.

[0056] The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the embodiments. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. It will also be understood that when the terms "comprise" and / or "include" are used herein, the description indicates the presence of the features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0057] In this document, unless otherwise specified, the expressions “located on the same layer” or “arranged on the same layer” generally mean that the first component and the second component can be made of the same material and can be formed by the same patterning process. The expressions “located on different layers” or “arranged on different layers” generally mean that the first component and the second component are formed by different patterning processes.

[0058] The wearable electronic watch in the related art includes a touch screen and electronic components. The inventor found that the touch screen on the electronic watch cannot realize the digital wheel function similar to the mechanical wheel function of the traditional mechanical watch. For the related wearable products, it is difficult for the user to realize the mechanical wheel function similar to the mechanical watch by sliding the edge of the touch screen of the watch.

[0059] The present disclosure provides a touch panel, comprising: a substrate and a plurality of first touch electrodes and a plurality of second touch electrodes arranged on the substrate. The plurality of first touch electrodes extend along a first direction, and at least one first touch electrode includes a plurality of first sub-electrodes electrically connected to each other; the plurality of second touch electrodes extend along a second direction, the second direction intersects with the first direction, and at least one second touch electrode includes a plurality of second sub-electrodes electrically connected to each other. A plurality of connecting portions are arranged at the intersection of the plurality of first touch electrodes and the plurality of second touch electrodes, at least one connecting portion is located between two first sub-electrodes adjacent to each other in the first direction and electrically connects the two adjacent first sub-electrodes, and is located between two second sub-electrodes adjacent to each other in the second direction and electrically connects the two adjacent second sub-electrodes, and at the connecting portion, the first touch electrode and the second touch electrode are electrically insulated from each other. The touch panel is provided with a touch area and a non-touch area surrounding the touch area, the multiple first touch electrodes and the multiple second touch electrodes are all located in the touch area, the multiple connecting parts include a first connecting part, a second connecting part and a third connecting part which are arranged in sequence away from the non-touch area along a first direction, the first connecting part, the second connecting part and the third connecting part are adjacent to each other in sequence along the first direction, and the distance between the center of the orthographic projection of the first connecting part on the substrate and the center of the orthographic projection of the second connecting part on the substrate is smaller than the distance between the center of the orthographic projection of the second connecting part on the substrate and the center of the orthographic projection of the third connecting part on the substrate.

[0060] In some embodiments, the first connection portion is the connection portion closest to the non-touch area.

[0061] By adopting this touch panel, the area of ​​the first sub-electrode and the second sub-electrode located at the boundary between the touch area and the non-touch area of ​​the touch panel can be increased, thereby improving the touch effect at the boundary between the touch area and the non-touch area, that is, the edge area of ​​the touch area, and realizing the digital wheel function.

[0062] The digital roulette function described in this article refers to a touch function triggered by sliding the edge area of ​​the touch area of ​​the touch panel. For example, for an electronic device including a touch panel, such as an electronic watch, a human finger slides the edge area of ​​the screen to stimulate a sliding touch signal, and the controller of the electronic device receives the sliding touch signal and performs a specific display on the electronic watch, thereby realizing the digital roulette function. Through the implementation of the digital roulette function, more colorful life, learning and work application scenarios can be developed. For example, we can set the alarm timing, adjust the screen brightness, adjust the volume, play music, and switch multi-function screens by sliding up and down on the edge area of ​​an electronic device, such as an electronic watch.

[0063] Figure 1FIG. 1 is a schematic diagram of a planar structure of a touch panel according to some embodiments of the present disclosure. Figure 1 As shown, some embodiments of the present disclosure provide a touch panel, the touch panel comprising a substrate 100 and a plurality of first touch electrodes 10 and a plurality of second touch electrodes 20 disposed on the substrate 100. The plurality of first touch electrodes 10 extend along a first direction X, and each first touch electrode 10 comprises a plurality of first sub-electrodes 11 electrically connected to each other. The plurality of second touch electrodes 20 extend along a second direction Y, and the second direction Y intersects with the first direction X, for example, the second direction Y is perpendicular to the first direction X. Each second touch electrode 20 comprises a plurality of second sub-electrodes 21 electrically connected to each other. A plurality of connecting portions 30 are disposed at the intersection of the plurality of first touch electrodes 10 and the plurality of second touch electrodes 20, each connecting portion 30 being located between two first sub-electrodes 11 adjacent to each other along the first direction X and electrically connecting the two adjacent first sub-electrodes 11, and being located between two second sub-electrodes 21 adjacent to each other along the second direction Y and electrically connecting the two adjacent second sub-electrodes 21, and at the connecting portion 30, the first touch electrode 10 and the second touch electrode 20 are electrically insulated from each other.

[0064] Combination Figure 1 and subsequent Figure 6-9 It can be considered that each first touch electrode 10 includes a plurality of first sub-electrodes 11 electrically connected to each other and a plurality of first connecting sub-portions 31 located between two adjacent first sub-electrodes 11 and electrically connecting the two adjacent first sub-electrodes 11, and each second touch electrode 20 includes a plurality of second sub-electrodes 21 electrically connected to each other and a plurality of second connecting sub-portions 32 located between two adjacent second sub-electrodes 21 and electrically connecting the two adjacent second sub-electrodes 21. The first connecting sub-portions 31 and the second connecting sub-portions 32 have a partially overlapping area, and the stacked structure they constitute is the connecting portion 30.

[0065] The touch panel 10 is provided with a touch area TA and a non-touch area NA surrounding the touch area TA. The plurality of first touch electrodes 10 and the plurality of second touch electrodes 20 are both located in the touch area TA.

[0066] Herein, the first touch electrode 10 may be one of a touch drive electrode and a touch sensing electrode, and the second touch electrode 20 may be one of a touch drive electrode and a touch sensing electrode. The touch drive electrode is used to receive a touch transmission signal, and the touch sensing electrode is used to sense a touch sensing signal based on the touch transmission signal.

[0067] It will be understood by those skilled in the art that Figure 1The planar structure of the touch panel is only schematically shown to indicate the relative positional relationship among the first touch electrode 10, the second touch electrode 20 and the connecting portion 30, and is not used to indicate the actual sizes of the above-mentioned components. In actual applications, the sizes of the first sub-electrode 11 of the first touch electrode 10, the second sub-electrode 21 of the second touch electrode 20 and the connecting portion 30 are very small relative to the entire touch panel.

[0068] Figure 2 for Figure 1 The plan view of area A in the middle. Figure 2 The planar structure of the peripheral area of ​​the touch panel is schematically shown. Figure 2 Only a portion of the touch area TA is shown, and the non-touch area NA is omitted. Figure 1 and Figure 2 It can be seen that the touch area TA includes an edge area close to the non-touch area NA and a middle area surrounded by the edge area, and the first sub-electrodes 11 and the second sub-electrodes 21 located in the middle area of ​​the touch area TA are basically regular patterns, such as diamonds, squares, grid lines, etc. At least some of the first sub-electrodes 11 and the second sub-electrodes 21 located in the edge area of ​​the touch area TA are irregular patterns, especially the first sub-electrodes 11 and the second sub-electrodes 21 adjacent to the non-touch area NA.

[0069] like Figure 1 and 2 As shown, the plurality of connection parts 30 are basically arranged in an array. Take a row of connection parts 30 extending along the first direction as an example. The row of connection parts 30 includes a first connection part 301, a second connection part 302 and a third connection part 303 arranged in sequence away from the non-touch area TA along the first direction X. The first connection part 301, the second connection part 302 and the third connection part 303 are adjacent to each other in sequence along the first direction X.

[0070] It is worth noting that the first connection portion 301, the second connection portion 302, and the third connection portion 303 mentioned here are adjacent to each other in sequence along the first direction X, which means that in the column of connection portions 30, the first connection portion 301 and the second connection portion 302 are adjacent connection portions to each other, and there is no other connection portion between them, and the second connection portion 302 and the third connection portion 303 are adjacent connection portions to each other, and there is no other connection portion between them. In this embodiment, the first connection portion 301 is the connection portion in the column of connection portions 30 that is closest to the lower non-touch area NA.

[0071] The first touch electrodes 11 corresponding to the column of connecting portions 30 include a first first sub-electrode 111, a second first sub-electrode 112, and a third first sub-electrode 113, which are arranged in a first direction X and are adjacent to each other in sequence and away from the non-touch area NA. The first first sub-electrode 111 is adjacent to the non-touch area NA. The first connecting portion 301 is located between the first first sub-electrode 111 and the second first sub-electrode 112, and is electrically connected to both the first first sub-electrode 111 and the second first sub-electrode 112. The second connecting portion 302 is located between the second first sub-electrode 112 and the third first sub-electrode 113, and is electrically connected to both the second first sub-electrode 112 and the third first sub-electrode 113. The third connecting portion 303 is located on a side of the third first sub-electrode 113 away from the second connecting portion 302, and is electrically connected to the third first sub-electrode 113.

[0072] like Figure 2 As shown, the distance between the center of the orthographic projection of the first connecting portion 301 on the substrate 100 and the center of the orthographic projection of the second connecting portion 302 on the substrate 100 is smaller than the distance between the center of the orthographic projection of the second connecting portion 302 on the substrate 100 and the center of the orthographic projection of the third connecting portion 303 on the substrate 100.

[0073] The multiple columns of connection parts 30 adjacent to the column of connection parts 30 and the first touch electrodes 10 corresponding thereto are all similarly arranged. In this way, the area of ​​the first sub-electrodes of the first touch electrodes 10 adjacent to the non-touch area NA is significantly increased compared with the related art, thereby improving the touch effect at the boundary between the touch area and the non-touch area, i.e., the edge area of ​​the touch area, thereby realizing the digital wheel function.

[0074] Figure 3 is a partial plan view of a touch panel in the related art, Figure 3 The structure and Figure 2 Correspondingly, such as Figure 1 and 3 As shown, the plurality of connecting portions 30 are basically arranged in an array. Take a row of connecting portions 30 extending along the first direction X as an example. Figure 2 The column connection portion 30 corresponds to the column connection portion 30 illustrated in the example. The column connection portion 30 includes a first connection portion 301', a second connection portion 302' and a third connection portion 303' which are arranged in sequence away from the non-touch area TA along the first direction X. The first connection portion 301', the second connection portion 302' and the third connection portion 303' are adjacent to each other in sequence along the first direction X. Figure 3 The first connecting portion 301 ′, the second connecting portion 302 ′ and the third connecting portion 303 ′ shown in FIG. 3 correspond to Figure 2The first connection part 301, the second connection part 302 and the third connection part 303 are shown in FIG.

[0075] The first touch electrodes 11 corresponding to the column of connecting portions 30 include a first first sub-electrode 111', a second first sub-electrode 112' and a third first sub-electrode 113', which are arranged in a first direction X and are adjacent to each other in sequence and away from the non-touch area. The first first sub-electrode 111' is adjacent to the non-touch area NA. The first connecting portion 301' is located between the first first sub-electrode 111' and the second first sub-electrode 112', and is electrically connected to both the first first sub-electrode 111' and the second first sub-electrode 112'. The second connecting portion 302' is located between the second first sub-electrode 112' and the third first sub-electrode 113', and is electrically connected to both the second first sub-electrode 112' and the third first sub-electrode 113'. The third connecting portion 303' is located on a side of the third first sub-electrode 113' away from the second connecting portion 302', and is electrically connected to the third first sub-electrode 113'. Figure 3 The first first sub-electrode 111 ′, the second first sub-electrode 112 ′ and the third first sub-electrode 113 ′ shown in FIG. 1 correspond to Figure 2 The first first sub-electrode 111, the second first sub-electrode 112 and the third first sub-electrode 113 are shown in FIG.

[0076] like Figure 3 As shown, the distance between the center of the orthographic projection of the first connecting portion 301' on the substrate 100 and the center of the orthographic projection of the second connecting portion 302' on the substrate 100 is equal to the distance between the center of the orthographic projection of the second connecting portion 302' on the substrate 100 and the center of the orthographic projection of the third connecting portion 303' on the substrate 100. Figure 3 In the embodiment, the plurality of columns of connecting portions 30 adjacent to the column of connecting portions 30 and the first touch control electrodes 10 corresponding thereto are all arranged similarly. Figure 3 As shown, in the related art, the area of ​​the first sub-electrode 11 located at the boundary between the touch area TA and the non-touch area NA is very small, and the area of ​​some of the first sub-electrodes 11 is less than or equal to 50% of the area of ​​the normal sub-electrode. The normal sub-electrode mentioned here refers to the first sub-electrode (hereinafter also referred to as the normal first sub-electrode) and / or the second sub-electrode (hereinafter also referred to as the normal second sub-electrode) located in the middle area of ​​the touch area TA and having a basically regular pattern, such as a rhombus, a square, a grid line, etc. In the related art, because the area of ​​some first sub-electrodes and / or second sub-electrodes located at the boundary between the touch area TA and the non-touch area NA is too small, the touch signal strength in the edge area of ​​the touch area is small, the touch signal and the background noise signal cannot be distinguished, and the digital wheel function cannot be realized.

[0077] For ease of understanding, Figure 2 The touch panel provided in the embodiment shown can be equivalent to Figure 3 On the basis of the related technology shown in the figure, a row of connecting parts 30 closest to the lower non-touch area NA is moved away from the non-touch area NA along the first direction X as a whole, and the shapes of the first sub-electrodes and the second sub-electrodes connected to each connecting part 30 in the row of connecting parts 30 are adjusted accordingly, so that the area of ​​the first sub-electrode and / or the second sub-electrode located at the boundary between the touch area TA and the non-touch area NA has good relative uniformity, avoiding an area that is too small, improving the touch effect at the boundary between the touch area and the non-touch area, that is, the edge area of ​​the touch area, and realizing the digital wheel function.

[0078] The distance that the row of connecting portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X is less than or equal to 1 / 2 of the maximum span of a normal first sub-electrode along the first direction X or the maximum length between two points on any side (hereinafter referred to as the maximum length along the first direction X). Figure 2 As shown, the difference between the distance between the center of the orthographic projection of the first connection portion 301 on the substrate 100 and the center of the orthographic projection of the second connection portion 302 on the substrate 100 and the distance between the center of the orthographic projection of the second connection portion 302 on the substrate 100 and the center of the orthographic projection of the third connection portion 303 on the substrate 100 is less than or equal to 1 / 2 of the maximum length of the third first sub-electrode 113 along the first direction X between the second connection portion 302 and the third connection portion 303 (i.e., the length of the diagonal of the third first sub-electrode 113 along the first direction). In some embodiments, the distance that the row of connection portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X as a whole is less than or equal to about 1 / 2 of the maximum span of a normal first sub-electrode along the first direction X or the maximum length between two points on any side. The "about" in "about 1 / 2" here means that the limit is not strictly defined, and a value within the process and error measurement range is allowed.

[0079] At this time, the area of ​​the first sub-electrode and / or the second sub-electrode located at the boundary between the touch area TA and the non-touch area NA can be made relatively uniform, and the distance between any two adjacent connecting parts 30 can be prevented from being too small. The connecting part 30 in the touch panel usually includes a metal bridge. The light transmittance of the metal bridge is almost zero due to its material properties. If the distance between two adjacent connecting parts 30 is too small, the two metal bridges of the two adjacent connecting parts are visually connected together. When the touch panel is used in an electronic device including a touch screen, a black dot outline will appear on the screen, which will seriously affect the screen display.

[0080] In order to clearly reflect Figure 2 The row of connection parts 30 closest to the lower non-touch area NA is opposite to Figure 3 The location change of the related art described in Fig.11 It also shows Figure 2 and Figure 3 The structure in Fig.11 As shown, the row of connecting portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X by a distance d1, and a normal first sub-electrode, such as the third first sub-electrode, has a maximum span along the first direction X or a maximum length between two points on any side is L1.

[0081] In some embodiments, for a row of connection portions 30 closest to the lower non-touch area NA, before moving, Figure 3 and 11 As shown, the center of the orthographic projection of each connecting portion 30 in the row of connecting portions 30 on the substrate 100 is located on a straight line extending along the second direction Y. After the movement, as shown in FIG. Figure 2 and Fig.11 As shown, the center of the orthographic projection of each connecting portion 30 in the row of connecting portions 30 on the substrate 100 is also located on a straight line extending along the second direction Y. In other words, the connecting portions in the row translate as a whole when moving.

[0082] In some embodiments, the moved connecting portion 30 and the connecting portions in the first direction and the second direction are all on a straight line, and the areas of the four electrodes most adjacent to the connecting portion are all smaller than the area of ​​the normal first sub-electrode.

[0083] In some embodiments, the distance that the row of connecting portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X is equal to 1 / 4 of the maximum length of the normal first sub-electrode along the first direction X. Figure 2 As shown, the difference between the distance between the center of the orthographic projection of the first connecting portion 301 on the substrate 100 and the center of the orthographic projection of the second connecting portion 302 on the substrate 100 and the distance between the center of the orthographic projection of the second connecting portion 302 on the substrate 100 and the center of the orthographic projection of the third connecting portion 303 on the substrate 100 is less than or equal to 1 / 4 of the maximum length of the third first sub-electrode 113 between the second connecting portion 302 and the third connecting portion 303 along the first direction.

[0084] In some embodiments, the distance that the row of connecting portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X as a whole is less than or equal to about 1 / 4 of the maximum span of a normal first sub-electrode along the first direction X or the maximum length between two points on any side. The "about" in "about 1 / 4" here means that the limit is not strictly defined, and a value within the process and error measurement range is allowed.

[0085] In some embodiments, Figure 2 As shown, the areas of the first first sub-electrode 111 and the second first sub-electrode 112 adjacent to the first connection portion 301 each account for approximately 50% to 100% of the area of ​​the third first sub-electrode 113 between the second connection portion 302 and the third connection portion 303, wherein the third first sub-electrode 113 is a normal first sub-electrode. The areas of the two second sub-electrodes 21 adjacent to the first connection portion 301 each account for approximately 50% to 100% of the area of ​​the one of the two second sub-electrodes 21 adjacent to and electrically connected to the third connection portion 303 that is further away from the non-touch area (being a normal second sub-electrode). In particular, when the boundary between the touch area and the non-touch area is an arc, the two second sub-electrodes 21 adjacent to and electrically connected to the third connection portion 303 are often at different distances from the non-touch area, and the second sub-electrode 21 that is further away from the non-touch area is usually closer to the center of the touch area (when the touch area is circular). The term "approximately" here means that the limit is not strictly defined, and a value within the process and error measurement range is allowed.

[0086] In related technologies such as Figure 3 As shown, the areas of the first sub-electrodes numbered 1, 2, 3, and 4 are all equal to the areas of normal first sub-electrodes. The areas of the first sub-electrodes numbered 5, 6, 7, and 8 are significantly smaller than the areas of normal first sub-electrodes, especially the areas of the first sub-electrodes numbered 5 and 8 are too small, less than 50% of the areas of normal first sub-electrodes. As a result, the touch signal strength at the edge of the touch area is relatively small, and the touch signal cannot be distinguished from the background noise signal, and the digital wheel function cannot be realized. The touch signal strength at a certain point in the touch panel is positively correlated with the change in the analog detection capacitance value at that point. The change in the analog detection capacitance value can represent the change in the capacitance signal at that point when a finger touches that point. Figure 3 In the figure, the change in the simulated detection capacitance value at point M is 0.0805 pF, and the change in the detection capacitance value at point N is 0.0348 pF.

[0087] In some embodiments of the present disclosure, Figure 2As shown, the areas of the first sub-electrodes numbered 1-8 are all 50% to 100% of the area of ​​the normal first sub-electrode. Take the case where the distance that a row of connecting portions 30 closest to the lower non-touch area NA moves away from the non-touch area NA along the first direction X as a whole is equal to 1 / 4 of the maximum length of the normal first sub-electrode along the first direction X as an example. Specifically, the areas of the first sub-electrodes numbered 1, 2, 3, and 4 are all approximately equal to 75% of the area of ​​the normal first sub-electrode. The areas of the first sub-electrodes numbered 5, 6, 7, and 8 are all greater than or equal to 50% of the area of ​​the normal first sub-electrode, among which the areas of the first sub-electrodes numbered 6 and 7 are approximately equal to 77.3% of the area of ​​the normal first sub-electrode. At the same time, the areas of the second sub-electrodes numbered 22, 23, and 24 are all greater than 75% of the area of ​​the normal second sub-electrode. For example, the areas of the second sub-electrodes numbered 22 and 24 are approximately 85.4% of the area of ​​the normal second sub-electrode, and the area of ​​the second sub-electrode numbered 23 is approximately 86.4% of the area of ​​the normal second sub-electrode. In Figure 2 In the figure, the change in the simulated detection capacitance value at point M is 0.1323 pF, and the change in the detection capacitance value at point N is 0.0772 pF.

[0088] Compared with the related art, although the above embodiment compresses the area of ​​the first sub-electrodes numbered 1, 2, 3, and 4, the area uniformity of the first sub-electrodes and the second sub-electrodes in the edge area of ​​the touch area is improved by adjusting the area of ​​the first sub-electrodes and the second sub-electrodes in the edge area of ​​the touch area, and the change in the analog detection capacitance value at point M increases by 1.64 times, and the change in the analog detection capacitance value at point N increases by 2.21 times. As a result, the touch effect at the boundary of the touch area and the non-touch area, that is, the edge area of ​​the touch area, is improved, thereby realizing the digital wheel function.

[0089] As mentioned above, Figure 2 The touch panel provided in the embodiment shown can be equivalent to Figure 3 On the basis of the related art shown in FIG. 1 , a row of connection portions 30 closest to the lower non-touch area NA is moved away from the non-touch area NA along the first direction X as a whole, and each connection portion in the row of connection portions 30 moves away from the non-touch area NA along the first direction X by an equal distance. It can be understood by those skilled in the art that, in some embodiments, each connection portion 30 in the row of connection portions 30 moves away from the non-touch area NA along the first direction X by an unequal distance, or in some embodiments, each connection portion 30 in the row of connection portions 30 moves away from the non-touch area NA along a direction forming a certain angle with the first direction X, as long as the effect of improving the area uniformity of the first sub-electrode and the second sub-electrode in the edge area of ​​the touch area can be achieved.

[0090] Figure 4 for Figure 1 The schematic diagram of the B area in the middle. Figure 4 The planar structure of the peripheral area of ​​the touch panel is schematically shown. Figure 4 Only a portion of the touch area TA is shown, and the non-touch area NA is omitted. Figure 1 and Figure 4 It can be seen that the touch area TA includes an edge area close to the non-touch area NA and a middle area surrounded by the edge area, and the first sub-electrodes 11 and the second sub-electrodes 21 located in the middle area of ​​the touch area TA are basically regular patterns, such as diamonds, squares, grid lines, etc. At least some of the first sub-electrodes 11 and the second sub-electrodes 21 located in the edge area of ​​the touch area TA are irregular patterns, especially the first sub-electrodes 11 and the second sub-electrodes 21 adjacent to the non-touch area NA.

[0091] like Figure 1 and 4 As shown, the plurality of connection portions 30 are basically arranged in an array. Take a row of connection portions 30 extending along the second direction Y as an example. The row of connection portions 30 includes a fourth connection portion 304, a fifth connection portion 305, and a sixth connection portion 306 which are arranged in sequence away from the non-touch area TA along the second direction Y. The fourth connection portion 304, the fifth connection portion 305, and the sixth connection portion 306 are adjacent to each other in sequence along the second direction Y.

[0092] It is worth noting that the fourth connection portion 304, the fifth connection portion 305 and the sixth connection portion 306 mentioned here are adjacent to each other in sequence along the second direction Y, which means that in the row of connection portions 30, the fourth connection portion 304 and the fifth connection portion 305 are adjacent connection portions to each other, and there is no other connection portion between them, and the fifth connection portion 305 and the sixth connection portion 306 are adjacent connection portions to each other, and there is no other connection portion between them. In this embodiment, the fourth connection portion 301 is the connection portion in the row of connection portions 30 that is closest to the right non-touch area NA.

[0093] The second touch electrodes 21 corresponding to the row of connecting portions 30 include a first second sub-electrode 211, a second second sub-electrode 212, and a third second sub-electrode 213, which are arranged in a second direction Y away from the non-touch area NA and are adjacent to each other in sequence. The first second sub-electrode 211 is adjacent to the non-touch area NA. The fourth connecting portion 304 is located between the first second sub-electrode 211 and the second second sub-electrode 212, and is electrically connected to both the first second sub-electrode 211 and the second second sub-electrode 212. The fifth connecting portion 305 is located between the second second sub-electrode 212 and the third second sub-electrode 213, and is electrically connected to both the second second sub-electrode 212 and the third second sub-electrode 213. The sixth connecting portion 306 is located on a side of the third second sub-electrode 213 away from the fifth connecting portion 305, and is electrically connected to the third second sub-electrode 213.

[0094] like Figure 4 As shown, the distance between the center of the orthographic projection of the fourth connecting portion 304 on the substrate 100 and the center of the orthographic projection of the fifth connecting portion 305 on the substrate 100 is smaller than the distance between the center of the orthographic projection of the fifth connecting portion 305 on the substrate 100 and the center of the orthographic projection of the sixth connecting portion 303 on the substrate 100.

[0095] The multiple rows of connection parts 30 adjacent to the row of connection parts 30 and the second touch electrodes 20 corresponding thereto are all similarly arranged. In this way, the area of ​​the second sub-electrodes of the second touch electrodes 20 adjacent to the non-touch area NA is significantly increased compared with the related art, thereby improving the touch effect at the boundary between the touch area and the non-touch area, i.e., the edge area of ​​the touch area, thereby realizing the digital wheel function.

[0096] Figure 5 is a partial plan view of a touch panel in the related art, Figure 5 The structure and Figure 4 Correspondingly, such as Figure 1 and 5 As shown, the plurality of connecting portions 30 are basically arranged in an array. Take a row of connecting portions 30 extending along the second direction Y as an example. Figure 4 The row connection portion 30 corresponds to the row connection portion 30 illustrated in the example. The row connection portion 30 includes a fourth connection portion 304', a fifth connection portion 305' and a sixth connection portion 306' which are arranged in sequence away from the non-touch area TA along the second direction Y. The fourth connection portion 304', the fifth connection portion 305' and the sixth connection portion 306' are adjacent to each other in sequence along the second direction Y. Figure 3 The fourth connecting portion 304', the fifth connecting portion 305' and the sixth connecting portion 306' shown in FIG. Figure 5The fourth connection portion 304, the fifth connection portion 305 and the sixth connection portion 306 are shown in FIG.

[0097] The second touch electrodes 21 corresponding to the row of connecting portions 30 include a first second sub-electrode 211', a second second sub-electrode 212' and a third second sub-electrode 213' which are arranged in a second direction Y and are adjacent to each other in sequence. The first second sub-electrode 211' is adjacent to the non-touch area NA. The fourth connecting portion 304' is located between the first second sub-electrode 211' and the second second sub-electrode 212', and is electrically connected to both the first second sub-electrode 211' and the second second sub-electrode 212'. The fifth connecting portion 305' is located between the second second sub-electrode 212' and the third second sub-electrode 213', and is electrically connected to both the second second sub-electrode 212' and the third second sub-electrode 213'. The sixth connecting portion 306' is located on the side of the third second sub-electrode 213' away from the fifth connecting portion 305', and is electrically connected to the third second sub-electrode 213'. Figure 5 The first second sub-electrode 211 ′, the second second sub-electrode 212 ′ and the third second sub-electrode 213 ′ shown in FIG. Figure 4 The first second sub-electrode 211, the second second sub-electrode 212 and the third second sub-electrode 213 are shown in FIG.

[0098] like Figure 5 As shown, the distance between the center of the orthographic projection of the fourth connecting portion 304' on the substrate 100 and the center of the orthographic projection of the fifth connecting portion 305' on the substrate 100 is equal to the distance between the center of the orthographic projection of the fifth connecting portion 305' on the substrate 100 and the center of the orthographic projection of the sixth connecting portion 306' on the substrate 100. Figure 5 In the embodiment, the multiple rows of connection portions 30 adjacent to the row of connection portions 30 and their corresponding second touch electrodes 20 are all arranged similarly. Figure 5 As shown, in the related art, the area of ​​the second sub-electrode 21 located at the boundary between the touch area TA and the non-touch area NA is very small, and the area of ​​some of the second sub-electrodes 21 is less than or equal to 50% of the area of ​​the normal sub-electrode. The normal sub-electrode mentioned here refers to the first sub-electrode (hereinafter also referred to as the normal first sub-electrode) and / or the second sub-electrode (hereinafter also referred to as the normal second sub-electrode) with a regular pattern, such as a rhombus, a square, etc., located in the middle area of ​​the touch area TA. Since in the related art, the area of ​​some first sub-electrodes and / or second sub-electrodes located at the boundary between the touch area TA and the non-touch area NA is too small, the touch signal strength in the edge area of ​​the touch area is small, the touch signal and the background noise signal cannot be distinguished, and the digital wheel function cannot be realized.

[0099] For ease of understanding, Figure 4 The touch panel provided in the embodiment shown can be equivalent to Figure 5 On the basis of the related technology shown, a column of connecting parts 30 closest to the non-touch area NA on the right is moved as a whole along the second direction Y away from the non-touch area NA, and the shapes of the first sub-electrodes and the second sub-electrodes connected to each connecting part 30 in the column of connecting parts 30 are adjusted accordingly, so that the area of ​​the first sub-electrode and / or the second sub-electrode located at the boundary between the touch area TA and the non-touch area NA has good relative uniformity, avoiding an area that is too small, improving the touch effect at the boundary between the touch area and the non-touch area, that is, the edge area of ​​the touch area, and realizing the digital wheel function.

[0100] The distance that the row of connecting portions 30 closest to the right non-touch area NA moves away from the non-touch area NA along the second direction Y is less than or equal to 1 / 2 of the maximum span of a normal second sub-electrode along the second direction Y or the maximum length between two points on any side (hereinafter referred to as the maximum length along the second direction Y). Figure 4 As shown, the difference between the distance between the center of the orthographic projection of the fourth connection portion 304 on the substrate 100 and the center of the orthographic projection of the fifth connection portion 305 on the substrate 100 and the distance between the center of the orthographic projection of the fifth connection portion 305 on the substrate 100 and the center of the orthographic projection of the sixth connection portion 306 on the substrate 100 is less than or equal to 1 / 2 of the length of the third second sub-electrode 213 along the second direction Y between the fifth connection portion 305 and the sixth connection portion 306 (i.e., the length of the diagonal of the third second sub-electrode 213 along the second direction). In some embodiments, the distance that the column of connection portions 30 closest to the right non-touch area NA moves away from the non-touch area NA along the second direction Y as a whole is less than or equal to about 1 / 2 of the maximum span of a normal second sub-electrode along the second direction Y or the maximum length between two points on any side. The "about" in "about 1 / 2" here means that the limit is not strictly defined, and a value within the process and error measurement range is allowed.

[0101] At this time, the area of ​​the first sub-electrode and / or the second sub-electrode located at the boundary between the touch area TA and the non-touch area NA can be made relatively uniform, and the distance between any two adjacent connecting parts 30 can be prevented from being too small. The connecting part 30 in the touch panel usually includes a metal bridge. The light transmittance of the metal bridge is almost zero due to its material properties. If the distance between two adjacent connecting parts 30 is too small, the two metal bridges of the two adjacent connecting parts are visually connected together. When the touch panel is used in an electronic device including a touch screen, a black dot outline will appear on the screen, which will seriously affect the screen display.

[0102] In order to clearly reflect Figure 4 The row of connection parts 30 closest to the lower non-touch area NA is opposite to Figure 5 The location change of the related art described in Fig.12 It also shows Figure 4 and Figure 5 The structure in Fig.12 As shown, the distance d2 that the column of connecting portions 30 closest to the right non-touch area NA moves away from the non-touch area NA along the second direction Y as a whole is, and the maximum span of a normal second sub-electrode, such as the third second sub-electrode, along the second direction Y or the maximum length between two points on any edge is L2.

[0103] In some embodiments, for a row of connection portions 30 closest to the right non-touch area NA, before moving, Figure 5 and 12 As shown, the center of the orthographic projection of each connecting portion 30 in the row of connecting portions 30 on the substrate 100 is located on a straight line extending along the first direction X. After the movement, as shown in FIG. Figure 4 and Fig.11 As shown, the center of the orthographic projection of each connecting portion 30 in the row of connecting portions 30 on the substrate 100 is also located on a straight line extending along the first direction X. In other words, the connecting portions in the row translate as a whole when moving.

[0104] In some embodiments, the moved connecting portion 30 and the connecting portions in the first direction and the second direction are all on a straight line, and the areas of the four electrodes most adjacent to the connecting portion are all smaller than the area of ​​the normal second sub-electrode.

[0105] In some embodiments, the distance that the row of connecting portions 30 closest to the right non-touch area NA moves away from the non-touch area NA along the second direction Y is equal to 1 / 4 of the maximum length of the normal second sub-electrode along the second direction Y. Figure 4 As shown, the difference between the distance between the center of the orthographic projection of the fourth connecting portion 304 on the substrate 100 and the center of the orthographic projection of the fifth connecting portion 305 on the substrate 100 and the distance between the center of the orthographic projection of the fifth connecting portion 305 on the substrate 100 and the center of the orthographic projection of the sixth connecting portion 306 on the substrate 100 is less than or equal to 1 / 4 of the maximum length of the third second sub-electrode 213 between the fifth connecting portion 305 and the sixth connecting portion 306 along the second direction Y.

[0106] In some embodiments, Figure 4As shown, the areas of the first second sub-electrode 211 and the second second sub-electrode 212 adjacent to the fourth connection portion 304 both account for 50% to 100% of the area of ​​the third second sub-electrode 213 between the fifth connection portion 305 and the sixth connection portion 306, wherein the third second sub-electrode 213 is a normal second sub-electrode. The areas of the two first sub-electrodes 11 adjacent to the fourth connection portion 304 both account for 50% to 100% of the area of ​​the one (a normal first sub-electrode) of the two first sub-electrodes 11 adjacent to and electrically connected to the sixth connection portion 306 that is further away from the non-touch area. In particular, when the boundary between the touch area and the non-touch area is an arc, the two first sub-electrodes 11 adjacent to and electrically connected to the sixth connection portion 303 are often at different distances from the non-touch area, and the first sub-electrode 11 that is further away from the non-touch area is usually closer to the center of the touch area (when the touch area is circular).

[0107] As mentioned above, Figure 4 The touch panel provided in the embodiment shown can be equivalent to Figure 5 On the basis of the related art shown in FIG. 1 , a row of connection portions 30 closest to the right non-touch area NA is moved away from the non-touch area NA along the second direction Y as a whole, and each connection portion in the row of connection portions 30 moves away from the non-touch area NA along the second direction Y by an equal distance. It can be understood by those skilled in the art that, in some embodiments, each connection portion 30 in the row of connection portions 30 moves away from the non-touch area NA along the second direction Y by an unequal distance, or in some embodiments, each connection portion 30 in the row of connection portions 30 moves away from the non-touch area NA along a direction forming a certain angle with the second direction Y, as long as the effect of improving the area uniformity of the first sub-electrode and the second sub-electrode in the edge area of ​​the touch area can be achieved.

[0108] Figure 1 The specific structure of the middle C region is similar to the specific structure of the B region. The two are roughly mirror-symmetrical with respect to the axis of the touch panel along the first direction X, and will not be described in detail here. Figure 1 The specific structure of the middle D area is similar to the specific structure of the A area. The two are roughly mirror-symmetrical with respect to the axis of the touch panel along the second direction Y, and will not be described in detail here.

[0109] Compared with the related art, the solution in this embodiment improves the area uniformity of the first sub-electrode and the second sub-electrode in the edge area of ​​the touch area by adjusting the area of ​​the first sub-electrode and the second sub-electrode in the edge area of ​​the touch area, and improves the touch effect at the boundary between the touch area and the non-touch area, that is, the edge area of ​​the touch area, thereby realizing the digital wheel function.

[0110] In the above embodiment, the boundary between the touch area TA and the non-touch area TA is circular. Those skilled in the art can understand that in other embodiments, the boundary between the touch area TA and the non-touch area TA can be circular or in other shapes, such as an ellipse. Furthermore, as long as at least a portion of the boundary between the touch area TA and the non-touch area TA is arc-shaped or the area uniformity of the first sub-electrode and / or the second sub-electrode located at the boundary between the touch area TA and the non-touch area TA is poor, the design concept of the present disclosure can be adopted, and at least one connecting portion adjacent to the boundary between the touch area TA and the non-touch area TA is moved in a direction away from the non-touch area TA, thereby adjusting the area of ​​the touch first sub-electrode and / or the second sub-electrode connected thereto, improving the area uniformity of the first sub-electrode and / or the second sub-electrode at the boundary between the touch area TA and the non-touch area TA, and improving the touch effect at the boundary between the touch area and the non-touch area, that is, the edge area of ​​the touch area, thereby realizing the digital wheel function.

[0111] Figure 6 for Figure 1 The partially enlarged schematic diagram of the touch panel shows a connecting portion and two first sub-electrodes and two second sub-electrodes adjacent to and electrically connected to the connecting portion, wherein the two first sub-electrodes are normal first sub-electrodes, and the two second sub-electrodes are normal second sub-electrodes.

[0112] like Figure 6 As shown, the connection portion 30 includes a first connection sub-portion 31 and a second connection sub-portion 32. The first connection sub-portion 31 extends along the first direction X and electrically connects two first sub-electrodes 11 adjacent to each other along the first direction X. The second connection sub-portion 32 extends along the second direction Y and electrically connects two second sub-electrodes 21 adjacent to each other along the second direction Y. The first connection sub-portion 31 and the second connection sub-portion 32 are electrically insulated from each other, and an insulating layer is provided between them. In this article, the above-mentioned connection portion 30 can be regarded as a regular area where the stacked structure of the first connection sub-portion 31 and the second connection sub-portion 32 is located. Figure 7 for Figure 6 Schematic diagram of the cross section of the structure along line E-E'. Figure 6 and Figure 7As shown, the first sub-electrode 11 and the second sub-electrode 21 are located in the same electrode layer, which is denoted as the first electrode layer 51, and the first electrode layer 51 is disposed on the substrate 100. The second connecting sub-portion 32 can be an integral structure with the two second sub-electrodes 21 adjacent to each other along the second direction Y, that is, the second connecting sub-portion 32 is also located in the first electrode layer 51, and the second connecting sub-portion 32 is disposed in the same layer as the first touch electrode 10 including the first sub-electrode 11 and the second touch electrode 20 including the second sub-electrode 21. The first connecting sub-portion 31 is located in the second electrode layer 52. The second electrode layer 52 is located on the side of the first electrode layer 51 away from the substrate 100. An insulating layer 40 is disposed between the first electrode layer 51 and the second electrode layer 52. A via 41 is disposed in the insulating layer 40, and one end of the first connecting sub-portion 31 is electrically connected to one first sub-electrode 11 through the via 41, and the other end of the first connecting sub-portion 31 is electrically connected to the other first sub-electrode 11 through the via 41, so that the two first sub-electrodes 11 are electrically connected in a bridging manner. Figure 8 for Figure 1 The partially enlarged schematic diagram of the touch panel shows a connecting portion and two first sub-electrodes and two second sub-electrodes adjacent to and electrically connected to the connecting portion, wherein the two first sub-electrodes are normal first sub-electrodes, and the two second sub-electrodes are normal second sub-electrodes.

[0113] like Figure 8 As shown, the connection portion 30 includes a first connection sub-portion 31 and a second connection sub-portion 32. The first connection sub-portion 31 extends along the first direction X and electrically connects two first sub-electrodes 11 adjacent to each other along the first direction X. The second connection sub-portion 32 extends along the second direction Y and electrically connects two second sub-electrodes 21 adjacent to each other along the second direction Y. The first connection sub-portion 31 and the second connection sub-portion 32 are electrically insulated from each other, with an insulating layer therebetween.

[0114] Fig. 9 for Figure 8 Schematic diagram of the cross section of the structure along the line M-M'. Figure 8 and Fig. 9As shown, the first sub-electrode 11 and the second sub-electrode 21 are located in the same electrode layer, which is denoted as the first electrode layer 51, and the first electrode layer 51 is disposed on the substrate 100. The first connecting sub-portion 31 can be an integral structure with the two first sub-electrodes 11 adjacent to each other along the first direction X, that is, the first connecting sub-portion 31 is also located in the first electrode layer 51, and the first connecting sub-portion 31 is disposed in the same layer as the first touch electrode 10 including the first sub-electrode 11 and the second touch electrode 20 including the second sub-electrode. The second connecting sub-portion 32 is located in the second electrode layer 52. The second electrode layer 52 is located on the side of the first electrode layer 51 away from the substrate 100. An insulating layer 40 is disposed between the first electrode layer 51 and the second electrode layer 52. A via 42 is disposed in the insulating layer 40, and one end of the second connecting sub-portion 32 is electrically connected to one second sub-electrode 21 through the via 42, and the other end of the second connecting sub-portion 31 is electrically connected to the other second sub-electrode 21 through the via 42, so that the two second sub-electrodes 21 are electrically connected in a bridging manner.

[0115] The connecting portion 30 mentioned herein refers to Figure 6 or Figure 8 The portion indicated by the dashed line frame includes a stacked structure consisting of a first connecting sub-portion 31 and a second connecting sub-portion 32. The center of the orthographic projection of the connecting portion 30 on the substrate 100 is as shown in FIG. Figure 6 or Figure 8 The S in the formula is Figure 6 or Figure 8 The center of the portion represented by the dotted box in the figure, the position of the center S can be used to indicate the position of the connecting portion 30. Those skilled in the art will appreciate that Figure 1-5 In the figure, for the convenience of drawing, only “+” is used to represent the connection portion 30 , and the center of the “+” represents the center S of the orthographic projection of the connection portion 30 on the substrate 100 .

[0116] In some embodiments, the first connecting sub-portion 31 in the connecting portion 30 may be one or more strips, and the second connecting sub-portion 32 in the connecting portion 30 may also be one or more strips. Figure 6 and Figure 8 In the figure, only an example is given in which the connection portion 30 has one first connection sub-portion 31 and one second connection sub-portion 32.

[0117] Fig.10 FIG. 1 is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure, such as Fig.10 As shown, the connecting portion 30 has two first connecting sub-portions 31 and one second connecting sub-portion 32 . Fig.10 Compared with the structure shown in Figure 6 The structure shown in FIG. 1 adds a first connecting sub-portion 31, and the layer where the first connecting sub-portion 31 is located and the connection relationship and connection method with the two adjacent first sub-electrodes 11 are the same as Figure 6The structures shown in are basically the same and will not be described again here.

[0118] In some embodiments, Fig.10 and Fig.15 As shown, the connecting portion 30 is a rectangle shown in a dotted box. In some embodiments, the length of the connecting portion 30 in the second direction Y is greater than the length in the first direction X. In some embodiments, the length of the connecting portion 30 in the second direction Y is less than or equal to the length in the first direction X. In some embodiments, the length of the connecting portion 30 in the second direction Y is approximately 0.6 mm, and the length in the first direction X is 0.55 mm. In other embodiments, the length of the connecting portion 30 in the second direction Y ranges from approximately 0.5 to 0.7 mm, and the length in the first direction X ranges from approximately 0.45 to 0.65 mm. The term "approximately" here means that the numerical boundaries are not strictly limited, and numerical values ​​within the range of process and measurement errors are allowed.

[0119] Those skilled in the art will appreciate that the first connecting sub-portion 31 and / or the second connecting sub-portion 32 may be in the form of a straight strip (eg Figure 6 , 8), bent strips (such as Fig.10 As shown in the figure), a curved strip, etc., as long as it can ensure that the two first sub-electrodes or the two second sub-electrodes electrically connected thereto are electrically conductive, no specific limitation is made here.

[0120] In some embodiments, the maximum length of the first connecting sub-portion 31 along the first direction X is equal to about 1 / 4 of the maximum length of a normal first sub-electrode along the first direction X. For example, a normal first sub-electrode is Figure 2 The third first sub-electrode 113 between the second connecting portion 302 and the third connecting portion 303 shown in FIG. The maximum length of the second connecting sub-portion 31 along the first direction X is equal to about 1 / 4 of the maximum length of a normal first sub-electrode along the first direction X. For example, a normal second sub-electrode is Figure 5 The third second sub-electrode 213 between the fifth connecting portion 305 and the third connecting portion 306 is shown in FIG. Approximately refers to a value within a range of process and error measurement without strictly defining the limit.

[0121] In some embodiments, the maximum length of the normal first sub-electrode along the first direction X and the maximum length of the normal second sub-electrode along the second direction Y may be equal or unequal.

[0122] In the above embodiments, the boundary between the adjacent first sub-electrode 11 and the second sub-electrode 21 is illustrated as a straight line boundary. However, in some embodiments, the boundary between the adjacent first sub-electrode 11 and the second sub-electrode 21 may be in other shapes, such as a folded line. Figure 2The boundary between the first sub-electrode numbered 6 and the second sub-electrode 21 numbered 22 in FIG.

[0123] Fig.13 FIG. 1 is a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure, showing only a portion of the first sub-electrode 11 labeled 6 and the second sub-electrode 21 labeled 22 and the boundary between them. Fig.13 As shown, the boundary 60 between the first sub-electrode 11 and the second sub-electrode 21 is in the shape of a broken line, and the boundary 60 includes a plurality of broken line segments connected end to end, and any two adjacent broken line segments form an obtuse angle β, and the range of the obtuse angle β is 120° to 140°. For example, the obtuse angle β between any two adjacent broken line segments is 130°. Compared with the straight line boundary between the first sub-electrode 11 and the second sub-electrode 21 ( Fig.13 The dashed line in the figure shows a straight line boundary). This arrangement can further adjust the size of the adjacent first sub-electrode 11 and the second sub-electrode 21, such as Figure 2 and Fig.13 As shown, the size of the first sub-electrode 11 marked with 6 can be further increased, and the size of the second sub-electrode 21 marked with 22 can be reduced, so that the sizes of the two are more balanced. In some embodiments, the boundary 60 between the first sub-electrode 11 and the second sub-electrode 21 is in the shape of a broken line, and the boundary 60 includes a plurality of broken line segments connected end to end, and an obtuse angle β is formed between any two adjacent broken line segments, and the obtuse angle 3 ranges from 120° to 140°, and at least two obtuse angles have different values.

[0124] Fig.14 for Fig.13 The enlarged schematic diagram of the middle area Z is shown in Fig.14As shown, the boundary 60 between the first sub-electrode 11 labeled 6 and the second sub-electrode 21 labeled 22 includes a first dummy electrode 62 and a second dummy electrode 64 located between the first sub-electrode 11 and the second sub-electrode 21. The first dummy electrode 62 and the second dummy electrode 64 are both in the shape of a zigzag line, and the two are basically arranged in parallel. The first dummy electrode 62 and the second dummy electrode 64 being basically parallel here means that the first dummy electrode 62 and the second dummy electrode 64 each include a plurality of zigzag line segments, and each zigzag line segment of the first dummy electrode 62 is arranged in parallel with the zigzag line segment corresponding to the second dummy electrode 64. The first dummy electrode 62 is closer to the first sub-electrode 11 than the second dummy electrode 64, and the second dummy electrode 64 is closer to the second sub-electrode 21 than the first dummy electrode 62. The boundary 60 further includes a first interval 61 between the first sub-electrode 11 and the first dummy electrode 62, a second interval 63 between the first dummy electrode 62 and the second dummy electrode 64, and a third interval 65 between the second dummy electrode 64 and the second sub-electrode 21. The first interval 61 electrically insulates the first sub-electrode 11 from the first dummy electrode 62, the second interval 63 electrically insulates the first dummy electrode 62 from the second dummy electrode 64, and the third interval 65 electrically insulates the second dummy electrode 64 from the second sub-electrode 21. The first interval 61, the second interval 63, and the third interval 65 are all in a zigzag shape, and the three are substantially arranged in parallel.

[0125] In some embodiments, the first dummy electrode 62 and the second dummy electrode 64 are both in a floating state.

[0126] In some embodiments, the first dummy electrode 62, the second dummy electrode 64, the first sub-electrode 11 and the second sub-electrode 21 are arranged in the same layer using the same material. This arrangement can make the transmittance of the area where the first sub-electrode 11 and the second sub-electrode 21 are located and the area where the boundary 60 is located as close as possible, so that the transmittance of the entire touch panel is as uniform as possible.

[0127] Those skilled in the art can understand that the boundaries between any adjacent first sub-electrodes 11 and second sub-electrodes 21 can adopt similar settings as described above.

[0128] Fig.15 shows a partial enlarged schematic diagram of a touch panel according to some embodiments of the present disclosure, Fig.15 The figure mainly shows the specific structure of a connecting part 30 and the structure around the connecting part. Fig.15 The portion indicated by the dotted line frame includes a stacked structure formed by the first connecting sub-portion 31 and the second connecting sub-portion 32, and is a regular area where the stacked structure is located. Fig.10 Similar to the connection portion 30 shown in FIG. Fig.15The connection portion 30 in the embodiment includes two first connection sub-portions 31 (i.e., a first first connection sub-portion 311 and a second first connection sub-portion 312) and a second connection sub-portion 32, and a first via hole 411 and a second via hole 412 electrically connected to both ends of the first first connection sub-portion 311, and a third via hole 413 and a fourth via hole 414 electrically connected to both ends of the second first connection sub-portion 312. In this article, the connection portion may be a regular area (e.g., having a rectangular or other shape), and the center of the orthographic projection of the connection portion on the substrate may be the center of the orthographic projection of the regular area on the substrate.

[0129] like Fig.15 As shown, the connection portion 30 connects the first sub-electrode 11 located on the upper side and the first sub-electrode 11 located on the lower side, and the connection portion 30 connects the second sub-electrode 21 located on the left side and the second sub-electrode 21 located on the right side. The boundary 60 between any adjacent first sub-electrodes and second sub-electrodes 21 is a broken line, similar to Fig.13 The boundaries shown in . Fig.15 Only a portion of the boundary 60 close to the connecting portion 30 is shown.

[0130] In some embodiments, Fig.15 In the embodiment, the first sub-electrode 11 on the upper side, the first sub-electrode 11 on the lower side, the second sub-electrode 21 on the left side, and the second sub-electrode 21 on the right side are all arranged in the same layer using the same material, for example Figure 6 and Figure 7 Similar to the embodiment shown in the figure, they are all located in the first electrode layer 51. The second connecting sub-portion 32 is formed integrally with the second sub-electrode 21 located on the left and the second sub-electrode 21 located on the right, for example, and is also located in the first electrode layer 51. The first first connecting sub-portion 311 and the second first connecting sub-portion 312, for example, are formed integrally with the second sub-electrode 21 located on the left and the second sub-electrode 21 located on the right. Figure 6 and Figure 7 The embodiment shown is similar, both are located in the second electrode layer 52, and an insulating layer 40 is provided between the first electrode layer 51 and the second electrode layer 52. The insulating layer 40 is provided with a first via hole 411, a second via hole 412, a third via hole 413 and a fourth via hole 414. Fig.15 As shown, the upper end of the first first connecting sub-portion 311 is electrically connected to the first sub-electrode 11 on the upper side through the first via hole 411, and the lower end of the first first connecting sub-portion 311 is electrically connected to the first sub-electrode 11 on the lower side through the second via hole 412; the upper end of the second first connecting sub-portion 312 is electrically connected to the first sub-electrode 11 on the upper side through the third via hole 413, and the lower end of the second first connecting sub-portion 312 is electrically connected to the first sub-electrode 11 on the lower side through the fourth via hole 414.

[0131] In some embodiments, the first via 411, the second via 412, the third via 413 and the fourth via 414 are substantially the same in shape and size. If process and measurement errors are excluded, the first via 411, the second via 412, the third via 413 and the fourth via 414 are exactly the same in shape and size.

[0132] In some embodiments, Fig.15 As shown, the first first connecting sub-portion 311 and the second first connecting sub-portion 312 are both bent strips. Specifically, the first first connecting sub-portion 311 is bent toward the second first connecting sub-portion 312 , and the second first connecting sub-portion 312 is bent toward the first first connecting sub-portion 311 .

[0133] In some embodiments, Fig.15 As shown, the bending portions of the first connecting sub-portion 311 and the second first connecting sub-portion 312 are both rounded with smooth transitions to avoid sharp edges at the bending portions.

[0134] In some embodiments, Fig.15 As shown, the bending angle θ of the first connecting sub-portion 311 and the second first connecting sub-portion 312 may be 130° to 150°, for example, 140°.

[0135] In some embodiments, Fig.15 As shown, the first first connecting sub-portion 311 and the second first connecting sub-portion 312 are basically mirror-symmetric with respect to the axis H-H' of the connecting portion 30 parallel to the first direction X, and the orthographic projection of the midpoint of the line connecting the point on the first first connecting sub-portion 311 closest to the second first connecting sub-portion 312 and the point on the second first connecting sub-portion 312 closest to the first first connecting sub-portion 311 on the substrate is the center of the orthographic projection of the connecting portion 30 on the substrate.

[0136] In some embodiments, Fig.15 As shown, the connecting portion 30 is an axisymmetric structure, which is symmetrical with respect to an axis HH′ parallel to the first direction X, and symmetrical with respect to an axis VV′ parallel to the second direction Y.

[0137] In some embodiments, the second connecting sub-portion 32 is a zigzag structure, which is complementary to the edge shape of the first sub-electrode 11 with which it is not electrically connected. The angle of the bending portion of the second connecting sub-portion 32 protruding toward the upper first sub-electrode 11 and the angle α of the bending portion protruding toward the lower first sub-electrode 11 can be 130° to 170°, for example, 140°.

[0138] In some embodiments, a ratio of a maximum length of the first connecting sub-portion 31 in the first direction X to a minimum length of the second connecting sub-portion 32 in the first direction X is between 2.75 and 3.25, for example, 3.

[0139] In some embodiments, the edge of the second connecting sub-portion 32 includes a first fold line segment 321, a second fold line segment 322, a third fold line segment 323 and a fourth fold line segment 324. In some embodiments, the first fold line segment 321 is parallel to the fourth fold line segment 324, and is defined as a third direction Z1 that intersects both the first direction X and the second direction Y. In some embodiments, the second fold line segment 322 is parallel to the third fold line segment 323, and is defined as a fourth direction Z2 that intersects both the first direction X, the second direction Y, and the third direction Z1. The acute angle between the third direction Z1 and the second direction Y can be 5° to 25°, for example, 20°. The acute angle between the fourth direction Z2 and the second direction Y can be 5° to 25°, for example, 20°.

[0140] In some embodiments, Fig.15 As shown, the first first connecting sub-portion 311 substantially extends along a direction perpendicular to the third direction Z1 toward the first sub-electrode 11 on the upper side, and substantially extends along a direction perpendicular to the fourth direction Z2 toward the first sub-electrode 11 on the lower side. The second first connecting sub-portion 312 substantially extends along a direction perpendicular to the fourth direction Z2 toward the first sub-electrode 11 on the upper side, and substantially extends along a direction perpendicular to the third direction Z1 toward the first sub-electrode 11 on the lower side.

[0141] In some embodiments, the first via 411 is rectangular in shape, and the long side of the first via 411 is parallel to the third direction Z1. In some embodiments, the long side of the first via 411 is about 0.18 mm, and the short side is about 0.12 mm. In some embodiments, the long side of the first via 411 ranges from about 0.15 to 0.2 mm, and the short side ranges from about 0.1 to 0.14 mm. In some embodiments, the end of the first first connecting sub-portion 311 and the first via overlap portion is parallel to the third direction Z1, and the length in the third direction Z1 is less than the length of the first via 411. In some embodiments, the ratio of the long side of the first via 411 to the end of the first first connecting sub-portion 311 and the first via overlap portion in the third direction Z1 is about 2.57. In some embodiments, the ratio of the long side of the first via 411 to the end of the first first connecting sub-portion 311 and the first via overlap portion in the third direction Z1 is about 2-3. In some embodiments, the length of the end of the first first connecting sub-portion 311 and the first via overlap portion in the third direction Z1 is about 0.07 mm. In some embodiments, the length of the end of the first first connecting sub-portion 311 and the first via overlap portion in the third direction Z3 is about 0.04-0.1 mm.

[0142] In some embodiments, the two sides of the first first connecting sub-portion 311 extending from the end of the portion overlapping the first via hole are parallel to the short side of the first via hole 411, and for the above two sides, the length from the above end to the inflection point of the side close to the second first connecting sub-portion 312 is greater than the length from the end to the inflection point of the side away from the second first connecting sub-portion 312. In some embodiments, the length from the end to the inflection point of the side close to the second first connecting sub-portion 312 is about 0.25 mm, and the length from the end to the inflection point of the side away from the second first connecting sub-portion 312 is about 0.23 mm. In some embodiments, the length from the end to the inflection point of the side close to the second first connecting sub-portion 312 is in the range of about 0.2-0.3 mm, and the length from the end to the inflection point of the side away from the second first connecting sub-portion 312 is in the range of about 0.2-0.25 mm.

[0143] In some embodiments, the second via 412 is rectangular in shape, and the long side of the second via 412 is parallel to the fourth direction Z2. In some embodiments, the long side of the second via 412 is about 0.18 mm, and the short side is about 0.12 mm. In some embodiments, the long side of the second via 412 ranges from about 0.15 to 0.2 mm, and the short side ranges from about 0.1 to 0.14 mm. In some embodiments, the end of the first first connecting sub-portion 311 and the second via overlap portion is parallel to the fourth direction Z2, and the length in the fourth direction Z2 is less than the length of the second via 412. In some embodiments, the ratio of the long side of the second via 412 to the end of the first first connecting sub-portion 311 and the second via overlap portion in the fourth direction Z2 is about 2.57. In some embodiments, the ratio of the long side of the second via 412 to the end of the first first connecting sub-portion 311 and the second via overlap portion in the fourth direction Z2 is about 2-3. In some embodiments, the length of the end of the first first connecting sub-portion 311 and the second via overlap portion in the fourth direction Z2 is about 0.07 mm. In some embodiments, the length of the end of the first first connecting sub-portion 311 and the second via overlap portion in the fourth direction Z2 is about 0.04-0.1 mm.

[0144] In some embodiments, the two sides of the first first connecting sub-portion 311 extending from the end of the overlapped portion with the second via are parallel to the short side of the second via 412, and for the above two sides, the length from the above end to the inflection point of the side close to the second first connecting sub-portion 312 is greater than the length from the end to the inflection point of the side away from the second first connecting sub-portion 312. In some embodiments, the length from the end to the inflection point of the side close to the second first connecting sub-portion 312 is about 0.25 mm, and the length from the end to the inflection point of the side away from the second first connecting sub-portion 312 is about 0.23 mm. In some embodiments, the length from the end to the inflection point of the side close to the second first connecting sub-portion 312 is in the range of about 0.2-0.3 mm, and the length from the end to the inflection point of the side away from the second first connecting sub-portion 312 is in the range of about 0.2-0.25 mm.

[0145] In some embodiments, the third via 413 is rectangular in shape, and the long side of the third via 413 is parallel to the fourth direction Z2. In some embodiments, the long side of the third via 413 is about 0.18 mm, and the short side is about 0.12 mm. In some embodiments, the long side of the third via 413 ranges from about 0.15 to 0.2 mm, and the short side ranges from about 0.1 to 0.14 mm. In some embodiments, the end of the second first connecting sub-portion 312 and the overlapping portion of the third via is parallel to the fourth direction Z2, and the length in the fourth direction Z2 is less than the length of the third via 413. In some embodiments, the ratio of the long side of the third via 413 to the end of the second first connecting sub-portion 312 and the overlapping portion of the third via in the fourth direction Z2 is about 2.57. In some embodiments, the ratio of the long side of the third via 413 to the end of the second first connecting sub-portion 312 and the overlapping portion of the third via in the fourth direction Z2 is about 2-3. In some embodiments, the length of the end of the second first connecting sub-portion 312 and the third via overlap portion in the fourth direction Z2 is about 0.07 mm. In some embodiments, the length of the end of the second first connecting sub-portion 312 and the third via overlap portion in the fourth direction Z2 is about 0.04-0.1 mm.

[0146] In some embodiments, the two sides of the second first connecting sub-portion 312 extending from the end of the portion overlapping the third via hole are parallel to the short side of the third via hole 413, and for the above two sides, the length from the above end to the inflection point of the side close to the first first connecting sub-portion 311 is greater than the length from the end to the inflection point of the side away from the first first connecting sub-portion 311. In some embodiments, the length from the end to the inflection point of the side close to the first first connecting sub-portion 311 is about 0.25 mm, and the length from the end to the inflection point of the side away from the first first connecting sub-portion 312 is about 0.23 mm. In some embodiments, the length from the end to the inflection point of the side close to the first first connecting sub-portion 312 is in the range of about 0.2-0.3 mm, and the length from the end to the inflection point of the side away from the first first connecting sub-portion 312 is in the range of about 0.2-0.25 mm.

[0147] In some embodiments, the fourth via 414 is rectangular in shape, and the long side of the fourth via 414 is parallel to the third direction Z1. In some embodiments, the long side of the fourth via 414 is about 0.18 mm, and the short side is about 0.12 mm. In some embodiments, the long side of the fourth via 414 ranges from about 0.15 to 0.2 mm, and the short side ranges from about 0.1 to 0.14 mm. In some embodiments, the end of the second first connecting sub-portion 312 and the overlapping portion of the fourth via is parallel to the third direction Z1, and the length in the third direction Z1 is less than the length of the fourth via 414. In some embodiments, the ratio of the long side of the fourth via 414 to the end of the second first connecting sub-portion 312 and the overlapping portion of the fourth via in the third direction Z1 is about 2.57. In some embodiments, the ratio of the long side of the fourth via 414 to the end of the second first connecting sub-portion 312 and the overlapping portion of the fourth via in the third direction Z1 is about 2-3. In some embodiments, the length of the end of the second first connecting sub-portion 312 and the fourth via overlap portion in the third direction Z1 is about 0.07 mm. In some embodiments, the length of the end of the second first connecting sub-portion 312 and the fourth via overlap portion in the third direction Z1 is about 0.04-0.1 mm.

[0148] In some embodiments, the two sides of the second first connecting sub-portion 312 extending from the end of the portion overlapping the fourth via hole are parallel to the short side of the fourth via hole 414, and for the above two sides, the length from the above end to the inflection point of the side close to the first first connecting sub-portion 311 is greater than the length from the end to the inflection point of the side away from the first first connecting sub-portion 311. In some embodiments, the length from the end to the inflection point of the side close to the first first connecting sub-portion 311 is about 0.25 mm, and the length from the end to the inflection point of the side away from the first first connecting sub-portion 312 is about 0.23 mm. In some embodiments, the length from the end to the inflection point of the side close to the first first connecting sub-portion 312 is in the range of about 0.2-0.3 mm, and the length from the end to the inflection point of the side away from the first first connecting sub-portion 312 is in the range of about 0.2-0.25 mm.

[0149] Those skilled in the art will appreciate that the aforementioned embodiments are described using the shapes of the first via, the second via, the third via, and the fourth via as rectangles. In other embodiments, the shapes of the first via, the second via, the third via, and the fourth via may also be squares, diamonds, circles, etc., which will not be described in detail herein.

[0150] Some embodiments of the present disclosure provide an electronic device, including the touch panel described in any of the above embodiments. The electronic device may be a product or component with touch and display functions, such as an electronic watch, a car display device, etc.

[0151] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

Claims

1. A touch panel, comprising: Base material; A plurality of first touch control electrodes are arranged on the substrate and extend along a first direction, wherein at least one of the first touch control electrodes comprises a plurality of first sub-electrodes electrically connected to each other and a plurality of first connecting sub-portions located between two adjacent first sub-electrodes and electrically connecting the two adjacent first sub-electrodes; as well as A plurality of second touch control electrodes are arranged on the substrate and extend along a second direction, the second direction intersecting the first direction, at least one of the second touch control electrodes comprises a plurality of second sub-electrodes electrically connected to each other, and a plurality of second connecting sub-portions located between two adjacent second sub-electrodes and electrically connecting the two adjacent second sub-electrodes; The at least one first connecting sub-portion and the at least one second connecting sub-portion have at least a partial overlapping area, and the stacked structure formed is a connecting portion, the number of the connecting portions is multiple, and the first touch electrode and the second touch electrode are electrically insulated from each other; The touch panel is provided with a touch area and a non-touch area surrounding the touch area. The plurality of first touch electrodes and the plurality of second touch electrodes are both located in the touch area, the plurality of connection parts include a first connection part, a second connection part and a third connection part which are arranged in sequence away from the non-touch area along a first direction, the first connection part is adjacent to the second connection part along the first direction, and the second connection part is adjacent to the third connection part along the first direction, The distance between the center of the orthographic projection of the first connecting portion on the substrate and the center of the orthographic projection of the second connecting portion on the substrate is smaller than the distance between the center of the orthographic projection of the second connecting portion on the substrate and the center of the orthographic projection of the third connecting portion on the substrate; The at least one first touch electrode includes a first first sub-electrode, a second first sub-electrode and a third first sub-electrode arranged in sequence away from the non-touch area along a first direction, the first first sub-electrode is adjacent to the second first sub-electrode and the second first sub-electrode is adjacent to the third first sub-electrode, and the first first sub-electrode is adjacent to the non-touch area. The first connecting portion is located between the first first sub-electrode and the second first sub-electrode, and is electrically connected to both the first first sub-electrode and the second first sub-electrode. The second connecting portion is located between the second first sub-electrode and the third first sub-electrode, and is electrically connected to both the second first sub-electrode and the third first sub-electrode. The third connecting portion is located at a side of the third first sub-electrode away from the second connecting portion, and is electrically connected to the third first sub-electrode; Among them, the difference between the distance between the center of the orthographic projection of the first connecting part on the substrate and the center of the orthographic projection of the second connecting part on the substrate and the distance between the center of the orthographic projection of the second connecting part on the substrate and the center of the orthographic projection of the third connecting part on the substrate is less than or equal to 1 / 2 of the maximum length of the third first sub-electrode between the second connecting part and the third connecting part along the first direction.

2. The touch panel according to claim 1, wherein: The plurality of connection portions include a fourth connection portion, a fifth connection portion, and a sixth connection portion that are sequentially away from the non-touch area along the second direction, the fourth connection portion is adjacent to the fifth connection portion along the first direction, and the fifth connection portion is adjacent to the sixth connection portion along the first direction, The distance between the center of the orthographic projection of the fourth connecting portion on the substrate and the center of the orthographic projection of the fifth connecting portion on the substrate is smaller than the distance between the center of the orthographic projection of the fifth connecting portion on the substrate and the center of the orthographic projection of the sixth connecting portion on the substrate.

3. The touch panel according to claim 2, wherein: The at least one second touch electrode includes a first second sub-electrode, a second second sub-electrode and a third second sub-electrode arranged in sequence away from the non-touch area along the first direction, the first second sub-electrode is adjacent to the second second sub-electrode and the second second sub-electrode is adjacent to the third second sub-electrode, and the first second sub-electrode is adjacent to the non-touch area. The fourth connecting portion is located between the first second sub-electrode and the second second sub-electrode, and is electrically connected to both the first second sub-electrode and the second second sub-electrode. The fifth connecting portion is located between the second second sub-electrode and the third second sub-electrode, and is electrically connected to both the second second sub-electrode and the third second sub-electrode. The sixth connection portion is located at a side of the third second sub-electrode away from the fifth connection portion, and is electrically connected to the third second sub-electrode.

4. The touch panel according to claim 1, wherein: The difference between the distance between the center of the orthographic projection of the first connecting part on the substrate and the center of the orthographic projection of the second connecting part on the substrate and the distance between the center of the orthographic projection of the second connecting part on the substrate and the center of the orthographic projection of the third connecting part on the substrate is equal to 1 / 4 of the maximum length of the third first sub-electrode between the second connecting part and the third connecting part along the first direction.

5. The touch panel according to claim 4, wherein: The areas of the first first sub-electrode and the second first sub-electrode adjacent to the first connecting portion each account for 50% to 100% of the area of ​​the third first sub-electrode between the second connecting portion and the third connecting portion.

6. The touch panel according to claim 4, wherein: The areas of the two second sub-electrodes adjacent to the first connecting portion each account for 50% to 100% of the area of ​​the second sub-electrode that is further away from the non-touch area among the two second sub-electrodes adjacent to and electrically connected to the third connecting portion.

7. The touch panel according to claim 4, wherein: The areas of the first first sub-electrode and the second first sub-electrode adjacent to the first connection portion and the areas of the two second sub-electrodes adjacent to the first connection portion are smaller than the area of ​​the third first sub-electrode between the second connection portion and the third connection portion.

8. The touch panel according to claim 3, wherein: The difference between the distance between the center of the orthographic projection of the fourth connecting part on the substrate and the center of the orthographic projection of the fifth connecting part on the substrate and the distance between the center of the orthographic projection of the fifth connecting part on the substrate and the center of the orthographic projection of the sixth connecting part on the substrate is less than or equal to 1 / 2 of the maximum length of the third second sub-electrode between the fifth connecting part and the sixth connecting part along the second direction.

9. The touch panel according to claim 8, wherein: The difference between the distance between the center of the orthographic projection of the fourth connecting part on the substrate and the center of the orthographic projection of the fifth connecting part on the substrate and the distance between the center of the orthographic projection of the fifth connecting part on the substrate and the center of the orthographic projection of the sixth connecting part on the substrate is equal to 1 / 4 of the maximum length of the third second sub-electrode between the fifth connecting part and the sixth connecting part along the second direction.

10. The touch panel according to claim 9, wherein: The areas of the first second sub-electrode and the second second sub-electrode adjacent to the fourth connecting portion each account for 50% to 100% of the area of ​​the third second sub-electrode between the fifth connecting portion and the sixth connecting portion.

11. The touch panel according to claim 9, wherein: The areas of the two first sub-electrodes adjacent to the fourth connecting portion each account for 50% to 100% of the area of ​​the first sub-electrode that is further away from the non-touch area among the two first sub-electrodes adjacent to and electrically connected to the sixth connecting portion.

12. The touch panel according to claim 9, wherein: The areas of the first second sub-electrode and the second second sub-electrode adjacent to the fourth connection portion and the areas of the two first sub-electrodes adjacent to the fourth connection portion are smaller than the area of ​​the third second sub-electrode between the fifth connection portion and the sixth connection portion. 13 . The touch panel according to claim 1 , wherein at least a portion of a boundary between the touch area and the non-touch area is arc-shaped.

14. The touch panel according to any one of claims 1 to 13, wherein: For a connection portion of the plurality of connection portions, the connection portion comprises: a first connecting sub-portion extending along the first direction and electrically connecting the two first sub-electrodes adjacent to each other along the first direction; and The second connecting sub-portion extends along the second direction and electrically connects the two second sub-electrodes adjacent to each other along the second direction.

15. The touch panel according to claim 14, wherein: One of the first connecting sub-part and the second connecting sub-part and the first touch electrode and the second touch electrode are located in the first electrode layer; the other of the first connecting sub-part and the second connecting sub-part is located in the second electrode layer; an insulating layer is provided between the first electrode layer and the second electrode layer.

16. The touch panel according to claim 15, wherein: The first connecting sub-portion and the two adjacent first sub-electrodes along the first direction are an integral structure, and the second connecting sub-portion is electrically connected to the two adjacent second sub-electrodes along the second direction through a via hole penetrating the insulating layer.

17. The touch panel according to claim 16, wherein: The second connecting sub-portion and the two second sub-electrodes adjacent to each other along the second direction are an integral structure, and the first connecting sub-portion is electrically connected to the two first sub-electrodes adjacent to each other along the first direction through a via hole penetrating the insulating layer.

18. The touch panel according to claim 14, wherein: The maximum length of the first connection sub-portion along the first direction is equal to 1 / 4 of the maximum length of the first sub-electrode between the second connection portion and the third connection portion along the first direction.

19. The touch panel according to claim 14, wherein: The maximum length of the second connecting sub-portion along the second direction is equal to 1 / 4 of the maximum length of the second sub-electrode farther away from the non-touch area among the two second sub-electrodes adjacent to and electrically connected to the third connecting portion along the second direction.

20. The touch panel according to claim 14, wherein: The first connecting sub-portion includes a first first connecting sub-portion and a second first connecting sub-portion spaced apart in the second direction, the first first connecting sub-portion is bent toward the second first connecting sub-portion, and the second first connecting sub-portion is bent toward the first first connecting sub-portion.

21. The touch panel according to claim 20, wherein: The bending portion of at least one of the first first connecting sub-portion and the second first connecting sub-portion is a rounded corner.

22. The touch panel according to claim 20, wherein: A bending angle of at least one of the first first connecting sub-portion and the second first connecting sub-portion is 130° to 150°.

23. The touch panel according to claim 20, wherein: The connecting portion also includes a first via, a second via, a third via and a fourth via. The first first connecting sub-portion is electrically connected to two first sub-electrodes adjacent to each other along the first direction through the first via and the second via, respectively. The second first connecting sub-portion is electrically connected to the two first sub-electrodes adjacent to each other along the first direction through the third via and the fourth via, respectively.

24. The touch panel according to claim 23, wherein: The edge of the second connecting sub-portion includes: A first fold line segment is disposed facing the first via hole and extends along a third direction; A second fold line segment is disposed facing the second via hole and extends along a fourth direction; a third fold line segment, disposed facing the third via hole and extending along a fourth direction; and a fourth fold line segment, disposed facing the fourth via hole and extending along the third direction, The third direction and the fourth direction both intersect with each of the first direction and the second direction, and the third direction intersects with the fourth direction, the first fold line segment is connected to the third fold line segment, and the second fold line segment is connected to the fourth fold line segment.

25. The touch panel according to claim 24, wherein: The first via hole, the second via hole, the third via hole, and the fourth via hole are all rectangular, the long sides of the first via hole and the fourth via hole are parallel to the third direction, and the long sides of the second via hole and the third via hole are parallel to the fourth direction.

26. The touch panel according to claim 1, wherein: For at least one connecting portion, at least one first sub-electrode adjacent to and electrically connected to the connecting portion and at least one second sub-electrode adjacent to and electrically connected to the connecting portion are arranged adjacent to each other, and a boundary between the first sub-electrode and the second sub-electrode is in a broken line shape.

27. The touch panel according to claim 1, wherein: The multiple connecting parts constitute a connecting part array, and the connecting part array includes a plurality of connecting part columns extending along a first direction and a plurality of connecting part rows extending along a second direction, the centers of the orthographic projections of the connecting parts in the connecting part column closest to the non-touch area on the substrate are on a straight line, and the centers of the orthographic projections of the connecting parts in the connecting part row closest to the non-touch area on the substrate are on a straight line.

28. The touch panel according to any one of claims 1 to 27, wherein: One of the first touch electrode and the second touch electrode is a touch driving electrode, and one of the first touch electrode and the second touch electrode is a touch sensing electrode.

29. An electronic device comprising the touch panel according to any one of claims 1 to 28.

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