Touch structure, touch panel and electronic equipment

Abstract

The embodiment of the utility model discloses a touch control structure, a touch control panel and electronic equipment, relates to the technical field of touch control, and can improve the touch control sensitivity and the touch control precision. A first electrode and / or a second electrode of the touch control structure comprises a plurality of unit areas which are arranged adjacently, and the plurality of unit areas comprise at least one characteristic unit area. The feature unit area comprises a main body structure, a branch structure and a connecting structure connecting the main body structure and the branch structure, and a gap is formed between the branch structure and the main body structure. The orthographic projection of the characteristic unit area of the first electrode on the plane where the second electrodes are located is overlapped with the at least two second electrodes. Under the condition that the feature unit area is touched, the branch structures and / or the connecting structures of the feature unit area and the main body structures of the feature unit area are subjected to electrical signal change, and the electrical signal change degrees of the branch structures and / or the connecting structures of the feature unit area and the main body structures of the feature unit area are different.

Description

Technical Field

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

[0002] Touch technologies include optical, resistive, capacitive, and electromagnetic touch technologies. Among them, capacitive touch technology includes self-capacitive and mutual-capacitive touch technologies. Mutual-capacitive touch technology is widely used because it can achieve multi-point touch, has a good user experience, and is low in cost.

[0003] In order to improve the convenience of using touch panels in different scenarios and the flexibility of different operation modes of touch panels, improving the touch sensitivity of mutual capacitive touch technology has become a future development trend. Utility Model Content

[0004] In view of this, embodiments of the present application provide a touch structure, a touch panel, and an electronic device to solve at least one problem existing in the background technology.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0006] In one aspect, an embodiment of the present application provides a touch structure. The touch structure includes: a plurality of first electrodes and a plurality of second electrodes. The plurality of first electrodes are arranged at intervals along a first direction. The plurality of second electrodes are located in different layers from the plurality of first electrodes and are arranged at intervals along a second direction; the first direction and the second direction intersect.

[0007] The first electrode and / or the second electrode comprises a plurality of unit regions disposed adjacent to each other, and the plurality of unit regions disposed adjacent to each other comprises at least one characteristic unit region. The characteristic unit region comprises a main structure, a branch structure, and a connecting structure connecting the main structure and the branch structure, and there is a gap between the branch structure and the main structure.

[0008] The orthographic projection of the characteristic unit region of the first electrode on the plane where the second electrode is located overlaps with at least two of the second electrodes.

[0009] When the characteristic unit area is touched, electrical signal changes occur in the branch structure and / or connection structure of the characteristic unit area and the main structure of the characteristic unit area, and the degree of electrical signal change in the branch structure and / or connection structure of the characteristic unit area and the main structure of the characteristic unit area is different.

[0010] In some examples, the characteristic unit region includes a central region and a plurality of pairs of diagonal edge regions located on opposite sides of the central region. At least a portion of the main structure is located in the central region. The branch structure is located in at least one pair of the diagonal edge regions, or the branch structure is located in at least one of the two pairs of the diagonal edge regions.

[0011] In some examples, the branch structure of the characteristic unit region of the first electrode is at least located in a pair of diagonal edge regions on opposite sides of the central region along the first direction. And / or, the branch structure of the characteristic unit region of the second electrode is at least located in a pair of diagonal edge regions on opposite sides of the central region along the second direction.

[0012] In some examples, in the characteristic unit area of ​​the first electrode, the area where the orthographic projection of the main structure on the plane where the second electrode is located overlaps with at least two of the second electrodes is larger than the area where the orthographic projection of a portion of the branch structure and at least a portion of the connection structure located in one of the diagonal edge areas overlaps with at least two of the second electrodes. And / or, in the characteristic unit area of ​​the second electrode, the area where the orthographic projection of the main structure on the plane where the first electrode is located overlaps with at least two of the first electrodes is larger than the area where the orthographic projection of a portion of the branch structure and at least a portion of the connection structure located in one of the diagonal edge areas overlaps with at least two of the first electrodes.

[0013] In some examples, the main structure extends in a direction perpendicular to the first direction; the extension direction of the connection structure intersects the first direction. The main structures of multiple unit regions of one first electrode are connected in sequence, and the branch structures of multiple characteristic unit regions of one first electrode are not connected.

[0014] In some examples, the feature unit region includes one or more branch structures spaced apart. In the case where the feature unit region includes a plurality of branch structures, the plurality of branch structures are respectively located on both sides of the main structure; and / or the plurality of branch structures located on one side of the main structure are spaced apart.

[0015] In some examples, the shapes and / or sizes of the branch structures of the plurality of the characteristic unit regions of the first electrode may be different; and / or, the shapes and / or sizes of the branch structures of the plurality of the characteristic unit regions of the second electrode may be different.

[0016] On the other hand, an embodiment of the present application provides a touch panel. The touch panel includes a substrate, a touch structure, and the touch structure is arranged on one side of the substrate; the touch structure includes a plurality of first electrodes and a plurality of second electrodes located in different layers; the first electrode and / or the second electrode include a plurality of unit areas arranged adjacent to each other, and the plurality of unit areas arranged adjacent to each other include at least one characteristic unit area; when the characteristic unit area is touched, the branch structure and / or the connection structure of the characteristic unit area and the main structure of the characteristic unit area both undergo electrical signal changes, and the degree of electrical signal change of the branch structure and / or the connection structure of the characteristic unit area and the main structure of the characteristic unit area is different.

[0017] In some examples, the substrate includes a display substrate, the display substrate includes a plurality of pixel units arranged in an array. The touch control structure includes a plurality of touch control units arranged in an array; and an orthographic projection of one of the touch control units on the display substrate overlaps with at least one of the pixel units.

[0018] Parts of the first electrodes in at least two adjacent characteristic unit regions and parts of the second electrodes in at least two adjacent characteristic unit regions are located in one touch control unit.

[0019] Another aspect of the embodiments of the present application provides an electronic device. The electronic device includes: a touch panel and a processor. The touch panel includes a substrate and a touch structure disposed on the substrate; the touch structure includes a plurality of touch units arranged in an array, and one of the touch units includes a plurality of adjacent touch points; when a touch point in the touch unit is touched, the electrical signals of the touch point and at least two touch points surrounding the touch point change and the degree of change is different. The processor is used to drive the touch panel and determine the touch points of the touch panel.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an electronic device and a touch panel provided in one embodiment of the present application;

[0022] Figure 2 for Figure 1 A schematic cross-sectional view of a touch panel along section line AA is provided;

[0023] Figure 3 A schematic diagram of a touch structure provided in an embodiment of the present application Figure 1 ;

[0024] Figure 4 A schematic diagram of a touch structure provided in an embodiment of the present application Figure 2 ;

[0025] Figure 5 A schematic diagram of a touch structure provided in an embodiment of the present application Figure 3 ;

[0026] Figure 6 A schematic diagram of a touch structure provided in an embodiment of the present application Figure 4 ;

[0027] Figure 7 A schematic diagram of a touch structure provided in an embodiment of the present application Figure 5 ;

[0028] Figure 8 A schematic diagram of a characteristic unit region of a touch control structure provided in an embodiment of the present application Figure 1 ;

[0029] Fig. 9 A schematic diagram of a characteristic unit region of a touch control structure provided in an embodiment of the present application Figure 2 ;

[0030] Fig.10 A schematic diagram of a characteristic unit region of a touch control structure provided in an embodiment of the present application Figure 3 ;

[0031] Fig.11 A schematic diagram of a characteristic unit region of a touch control structure provided in an embodiment of the present application Figure 4 ;

[0032] Fig.12 A schematic diagram of a characteristic unit region of a touch control structure provided in an embodiment of the present application Figure 5 ;

[0033] Fig.13 A schematic diagram of simulation results of a touch structure provided in one embodiment of the present application. DETAILED DESCRIPTION

[0034] The exemplary embodiments disclosed in the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the specific embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope disclosed in the present application to those skilled in the art.

[0035] In the following description, a large number of specific details are given to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features known in the art are not described; that is, all features of the actual embodiments are not described here, and well-known functions and structures are not described in detail.

[0036] In the drawings, the sizes of layers, regions, elements and their relative sizes may be exaggerated for clarity. Like reference numerals denote like elements throughout.

[0037] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not indicate that the present application necessarily has the first element, component, region, layer or part.

[0038] Spatially relative terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used here for convenience of description to describe the relationship between an element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, the spatial relationship terms are intended to also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is turned over, then the elements or features described as "under other elements" or "under it" or "under it" will be oriented as "on" other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0039] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0040] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0041] With the development of display technology, display panels have gradually entered the era of high resolution and are widely used in various scenarios. At the same time, in order to improve the convenience of using display panels in different scenarios and the flexibility of different operation modes of display panels, touch technology is also constantly developing.

[0042] Touch technologies include optical, resistive, capacitive, and electromagnetic touch technologies. Among them, capacitive touch technologies include self-capacitive and mutual-capacitive touch technologies. Mutual-capacitive touch technologies can achieve multi-point touch, provide good user experience, and are low-cost, so they are widely used in different types of display devices or display panels. Therefore, improving the touch sensitivity and touch accuracy of mutual-capacitive touch technologies applied to display panels has become a future development trend.

[0043] Mutual capacitance touch technology senses the touch point through the change in capacitance between two electrodes. The orthographic projections of the two electrodes on the substrate intersect, and each electrode includes multiple sub-electrodes arranged in intervals and in parallel. Due to the large spacing between two adjacent sub-electrodes, the actual touch position is prone to errors or the touch cannot be sensed (for example, the sensed touch point is mistakenly considered to be a noise point). In addition, each electrode is a continuous long strip structure, and there are some areas where touch cannot be sensed, resulting in insensitive touch or low touch accuracy.

[0044] Based on this, the embodiments of the present application provide a touch structure, a touch panel and an electronic device, which can improve touch sensitivity and touch accuracy, and improve the user experience of the touch panel under different operation modes.

[0045] In some embodiments, Figure 1 As shown, an embodiment of the present application provides an electronic device 100.

[0046] By way of example, the electronic device 100 may include, but is not limited to, a mobile phone, a desktop computer, a tablet computer, a game console, a virtual reality (VR) device, or any electronic device with a touch function.

[0047] In some examples, such as Figure 1 As shown, the electronic device 100 includes: a touch panel 200 and a processor 110 .

[0048] like Figure 2 As shown, the touch panel 200 includes a substrate 201 and a touch structure 300 disposed on the substrate 201. The touch structure 300 includes a plurality of touch units 301 arranged in an array, and one touch unit 301 includes a plurality of adjacent touch points 3011.

[0049] like Figure 2 As shown, when a touch point 3011 in the touch unit 301 is touched, the electrical signals of the touch point 3011 and at least two touch points 3011 surrounding the touch point 3011 change and the degree of change is different.

[0050] The processor 110 is used to drive the touch panel 200 and determine a touch point 3011 of the touch panel 200 .

[0051] The above-mentioned "touch point" can be the smallest unit of touch, or the "touch unit" can be the smallest unit of touch. Among them, the "touch point" is the smallest unit in which the change in the electrical signal of the touch point can be sensed and utilized when the touch unit 301 is touched. The relationship between the sensed touch signals of the touch unit 301 and the touch point 3011 can be adjusted according to actual needs. The examples provided in this application are not limited to this. For example, the size of the touch point 3011 is related to the way of achieving the touch effect. For example, in the case of finger touch, the touch point 3011 is the unit of the smallest electrical signal of the smallest sensing finger fingerprint ridges and valleys. Or, in the case of stylus touch, the touch point 3011 is the size of the tip of the stylus.

[0052] During the process of driving the touch panel 200, the processor 110 senses the electrical signals of multiple touch points 3011 in the touch unit 301 (for example, the electrical signals of a touch point 3011 with the largest electrical signal and at least two touch points 3011 surrounding the touch point 3011), and selects the touch point 3011 with the largest electrical signal among the multiple touch points 3011 as the actual touch point 3011. In this way, the actual touch position can be accurately determined through the multiple touch points 3011, thereby improving the touch accuracy.

[0053] In some embodiments, Figure 2As shown, the embodiment of the present application provides a touch panel 200. The touch panel 200 may include a substrate 201, a touch structure 300 and a cover plate 202.

[0054] The substrate 201 may include a display substrate, or a substrate without a display function (eg, an electronic drawing board), etc. The following examples are exemplified by taking the substrate 201 as a display substrate.

[0055] In some examples, such as Figure 2 As shown, the substrate 201 may include a display substrate, and the display substrate may include a plurality of pixel units 2011 arranged in an array. For example, each pixel unit 2011 includes sub-pixels of at least three colors, for example, a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, and the first color, the second color, and the third color are three primary colors (for example, red, green, and blue).

[0056] The touch control structure 300 may be disposed on one side of the substrate 201. Figure 1 and Figure 2 As shown, the touch control structure 300 includes a plurality of touch control units 301 arranged in an array. The orthographic projection of the touch control unit 301 on the display substrate 201 covers at least one pixel unit 2011 and has substantially the same area.

[0057] For example, Figure 1 and Figure 2 As shown in FIG. 1 , the orthographic projection of a touch point 3011 of the touch unit 301 on the display substrate 201 covers a pixel unit 2011. For example, Figure 1 As shown, the touch unit 301 includes 9 touch points 3011 arranged in an array. Among them, one touch point 3011 can be equivalent to one pixel unit 2011. In this way, the size of one touch unit 301 can be equivalent to the 9 pixel units 2011 arranged in an array. The following example takes one touch point 3011 as an example to illustrate exemplary description.

[0058] The cover plate 202 may be disposed on a side of the touch structure 300 away from the substrate 201, and is used to package the touch structure 300 on the substrate 201. For example, the material of the cover plate 202 includes glass.

[0059] like Figure 3 As shown, the touch control structure 300 may include a plurality of first electrodes 310 and a plurality of second electrodes 320 located in different layers.

[0060] In some examples, the first electrode 310 of the touch-sensing structure 300 includes a receiving electrode RX, the second electrode 320 includes a transmitting electrode TX, and the first electrode 310 is located on a side of the second electrode 320 close to the cover plate 202 .

[0061] In this way, the receiving electrode RX is closer to the finger or stylus to be sensed, and can sense the change of the electrical signal more quickly, which is beneficial to improving the sensitivity of touch sensing.

[0062] In some examples, such as Figure 3 to Figure 5 As shown, the first electrode 310 and / or the second electrode 320 may include a plurality of unit regions 330 disposed adjacent to each other. The plurality of unit regions 330 disposed adjacent to each other include at least one characteristic unit region 331 .

[0063] It is understandable that the first electrode 310 and the second electrode 320 can be divided into a plurality of continuous unit regions 330. The structure of some unit regions 330 in the plurality of unit regions 330 is restricted to form a characteristic unit region 331 with a specific effect.

[0064] For example, Figure 3 As shown, part of the unit area 330 of the plurality of first electrodes 310 may be a characteristic unit area 331. Each or part of the second electrodes 320 of the plurality of second electrodes 320 may be a strip-shaped electrode.

[0065] Or, if Figure 4 As shown, each unit region 330 of the plurality of first electrodes 310 may be a characteristic unit region 331 , and each or a part of the plurality of second electrodes 320 may be a strip electrode.

[0066] Or, if Figure 5 As shown, each unit region 330 of the plurality of first electrodes 310 may be a characteristic unit region 331 , and each or a portion of the unit regions 330 of the plurality of second electrodes 320 may be a characteristic unit region 331 .

[0067] In the structure of the unit area 330 of the first electrode 310 and the second electrode 320, the structure of each characteristic unit area 331 is conducive to reducing the difference in electrical signals between the touch point and other surrounding areas, and increasing the area of ​​the sensing area where electrical signal changes occur, thereby improving the accuracy of touch coordinates.

[0068] For example, Figure 3 As shown, the characteristic unit region 331 may include a main structure 3311 , a branch structure 3312 , and a connection structure 3313 connecting the main structure 3331 and the branch structure 3312 , and a gap is provided between the branch structure 3312 and the main structure 3331 .

[0069] When the feature unit area 331 is touched, the branch structure 3312 and / or the connection structure 3313 of the feature unit area 331 and the main structure 3311 of the feature unit area 331 undergo electrical signal changes, and the degree of electrical signal change of the branch structure 3312 and / or the connection structure 3313 of the feature unit area 331 and the main structure 3311 of the feature unit area 331 is different.

[0070] Based on the shapes of the first electrode 310 and the second electrode 320 located in the characteristic unit area 331, the capacitance of the branch structure 3312 is different from that of the main structure 3311. When the characteristic unit area 331 is touched, the sensing branch structure 3312 (and the connecting structure 3313) and the main structure 3311 have different changes in the electrical signal, which can be sensed and utilized, which is beneficial to improving the accuracy and sensitivity of sensing the touch point 3011.

[0071] For example, one touch unit 301 may be equivalent to one characteristic unit area 331, a plurality of touch units 301 may be arranged in an array, and a plurality of touch points 3011 may be arranged in an array. Figure 4 As shown, a touch unit 301 includes 9 touch points 3011 arranged in three rows and three columns. When the touch point 3011 in the middle position of the leftmost column of a touch unit 301 is touched (the part with the filling pattern protruding as dense black dots), the electrical signals of the 6 touch points 3011 in the left column and the middle column of the feature unit area 301 are sensed, as well as the electrical signals of the 3 touch points 3011 in the rightmost column of a feature unit area 301 adjacent to the feature unit area 301 (the part with the filling pattern as oblique lines). The changes in the electrical signals of these 9 touch points 3011 are different, and they can all be sensed and used, so that the actual touch position can be accurately determined.

[0072] In some examples, such as Figure 5 As shown, portions of the first electrodes 310 of at least two adjacent characteristic unit regions 331 and portions of the second electrodes 320 of at least two adjacent characteristic unit regions 331 may be located in one touch control unit 301 .

[0073] For example, a touch unit 301 can be the minimum unit for sensing a touch effect, and a touch unit 301 can be equivalent to a characteristic unit area 331. When the touch unit 301 is touched, the electrical signal change of the part of the main structure 3311 corresponding to the characteristic unit area 331 in the touch unit 301 is the largest. Among them, the electrical signal change of the branch structure 3312 and the connection structure 3313 surrounding the main structure 3311 is smaller than the electrical signal change of the main structure 3311, and is larger than the electrical signal change of other branch structures 3312 adjacent to the characteristic unit area 331 (i.e., the touch unit 3011). In this way, the electrical signal sensed by the touch unit 301 can accurately determine the actual touch point 3011, reduce the probability of being mistaken for a noise point due to the large difference in electrical signals between the actual touch point 3011 and the surrounding touch points 3011, and improve the touch sensing accuracy and sensitivity.

[0074] The following examples take a touch unit 301 as the minimum unit for sensing a touch effect, and a touch unit 301 can be equivalent to a characteristic unit area 331 as an example to exemplarily illustrate the shape and size of the touch structure 300.

[0075] In some embodiments, Figure 3 to Figure 5 As shown, the touch control structure 300 includes a plurality of first electrodes 310 and a plurality of second electrodes 320 .

[0076] The plurality of first electrodes 310 are arranged along the first direction X at intervals.

[0077] The second electrodes 320 and the first electrodes 310 are located in different layers and are arranged at intervals along the second direction Y. The first direction X and the second direction Y intersect.

[0078] For example, the materials of the first electrode 310 and the second electrode 320 may be the same or different. For example, the materials of the first electrode 310 and the second electrode 320 include a metal element and / or a metal oxide. For example, the materials of the first electrode 310 and the second electrode 320 include a stacked structure of titanium / aluminum / titanium.

[0079] The first electrode 310 and / or the second electrode 320 may include a plurality of unit regions 330 disposed adjacent to each other, and the plurality of unit regions 330 disposed adjacent to each other may include at least one characteristic unit region 331 .

[0080] Furthermore, the characteristic unit region 331 includes a main structure 3311 , a branch structure 3312 , and a connection structure 3313 connecting the main structure 3331 and the branch structure 3312 , and a gap is provided between the branch structure 3312 and the main structure 3331 .

[0081] For example, Figure 3As shown, the main structure 3311 in the characteristic unit 331 may be a strip structure, the branch structure 3312 may be a strip structure extending along the first direction X or the second direction Y, and the connecting structure 3313 connects the main structure 3311 and the branch structure 3312 along the second direction Y (or the first direction X).

[0082] The shapes and sizes of the main structure 3311 , the branch structure 3312 and the connection structure 3313 in the characteristic unit 331 are described in subsequent examples. Here, it is exemplified that the shapes and sizes of the unit area 330 and the characteristic unit area 331 are different.

[0083] like Figure 3 and Figure 4 As shown, when the unit area 330 of the first electrode 310 includes at least one characteristic unit area 331, the orthographic projection of the characteristic unit area 330 of the first electrode 310 on the plane where the second electrode 320 is located can overlap with at least two second electrodes 320. It can be understood that the electrode structure of the unit area 330 of the second electrode 320 is not limited here. For example, the second electrode 320 can be a strip structure.

[0084] Or, if Figure 5 As shown, when the unit area 330 of the second electrode 320 includes at least one characteristic unit area 331, the orthographic projection of the characteristic unit area 330 of the second electrode 320 on the plane where the first electrode 310 is located can overlap with at least two first electrodes 310. It can be understood that the electrode structure of the unit area 330 of the first electrode 310 is not limited here. For example, the first electrode 310 can be a strip structure.

[0085] Or, if Figure 6 As shown, when the unit area 330 of the first electrode 310 and the unit area 330 of the second electrode 320 both include at least one characteristic unit area 331, the orthographic projection of the characteristic unit area 331 of the second electrode 320 on the plane where the first electrode 310 is located may overlap with at least two characteristic unit areas 331 of the first electrode 310. For example, the orthographic projection of one characteristic unit area 331 of the first electrode 310 on the plane where the second electrode 320 is located may overlap with four characteristic unit areas 331 of the second electrode 320.

[0086] Based on this, when the feature unit area 331 is touched, the branch structure 3312, the connection structure 3313 and the main structure 3311 of the feature unit area 331 all undergo electrical signal changes, and the degree of electrical signal change of the branch structure 3312 and / or the connection structure 3313 of the feature unit area 331 is different from that of the main structure 3311 of the feature unit area 331.

[0087] In the above-mentioned touch structure 300, the multiple unit areas 330 of the first electrode 310 and / or the second electrode 320 include at least one characteristic unit area 331, and the branch structure 3312 and the main structure 3311 in the characteristic unit area 331 represent different electrical signal quantities. For example, when the characteristic unit area 331 is touched, the branch structure 3312 and / or the connecting structure 3313 of the characteristic unit area and the main structure 3311 both undergo electrical signal changes, and the degree of electrical signal change of the branch structure 3312 and / or the connecting structure 3313 and the main structure 3311 is different. In this way, the electrode structure of the characteristic unit area 331 provided in the present application can not only sense the electrical signals of the branch structure 3312, the connecting structure 3313 and the main structure 3311 of the characteristic unit area 331, but also, compared with the difference in the electrical signal amount between the electrode in the adjacent unit area and the main structure in the characteristic unit area, can reduce the difference in the electrical signal amount represented by the main structure 3311 and the electrical signal amount represented by the branch structure 3312 and / or the connecting structure 3313, thereby improving the sensing touch sensitivity and improving the accuracy of the sensing touch point 3011.

[0088] In addition, if Figure 7 As shown, the orthographic projection of a characteristic unit area 331 of the first electrode 310 on the plane where the second electrode 320 is located may also overlap with three adjacent second electrodes 320. For example, when the spacing between two adjacent first electrodes 310 along the first direction X is greater than the spacing between two adjacent second electrodes 320 along the second direction Y, the second electrodes 320 are densely arranged. In this way, when a characteristic unit area 331 is touched, the changes in multiple electrical signals can also be sensed, and the precise touch point 3011 can be determined using multiple electrical signals.

[0089] In some examples, such as Figure 8 As shown, the characteristic unit region 331 may include a central region 3301 and a plurality of pairs of diagonal edge regions 3302 located on opposite sides of the central region 3301 .

[0090] For example, Figure 8 As shown, the characteristic unit area 331 may include a central area 3301 and four pairs of diagonal edge areas 3302. The four pairs of diagonal edge areas 3302 include a first pair of diagonal edge areas 3302 (diagonal edge areas 3302 at the upper left corner and the lower right corner), a second pair of diagonal edge areas 3302 (diagonal edge areas 3302 above and below the central area), a third pair of diagonal edge areas 3302 (diagonal edge areas 3302 at the upper right corner and the lower left corner), and a fourth pair of diagonal edge areas 3302 (diagonal edge areas 3302 at the left and right sides of the central area). The division method of the central area 3301 and the diagonal edge areas 3302 mentioned in the subsequent examples is as follows: Figure 8As shown in the example, the shape of the characteristic unit area 331 includes a rectangle, and the central area 3301 and the diagonal edge area 3302 are also rectangles. It can be understood that the shape of the characteristic unit area 331 can also include a polygon or a circle, and the shape of the corresponding central area 3301 is the same as the shape of the characteristic unit area 331, and the shape of the diagonal edge area 3302 is the shape of the remaining area around the central area 3301 divided equally, and the present application does not limit this, and it can be set according to actual needs.

[0091] For example, a touch unit 301 may be equivalent to a characteristic unit area 331. The size of a diagonal edge area 3302 may be equivalent to a touch point 3011. In this way, the difference between the amount of electrical signals represented by the electrode structure in the diagonal edge area 3302 and the amount of electrical signals represented by the electrode structure in the central area 3301 is reduced. When a characteristic unit area 331 is touched, it is beneficial to sense and use the amount of electrical signals represented by the electrode structure in the diagonal edge area 3302, calculate the coordinates of the touch point 3301, and improve the sensitivity and accuracy of touch sensing.

[0092] In some examples, such as Fig. 9 As shown, at least part of the main structure 3311 is located in the central area 3301. The branch structure 3312 is located at least in a pair of diagonal edge areas 3302, or, as shown in FIG. Fig.10 As shown, the branch structure 3312 is located in at least one diagonal edge region 3302 of the two pairs of diagonal edge regions 3302 .

[0093] For example, Fig. 9 As shown, the branch structure 3312 of the characteristic unit area 331 of the first electrode 310 can be located in two pairs of diagonal edge areas 3302 (touch points 3011 on the left and right sides of the central area 3301 of the characteristic unit area 331, and touch points 3011 in the lower left corner and the upper right corner), and the orthographic projection of the branch structure 3312 on the plane where the second electrode 320 is located can overlap with at least two second electrodes 320.

[0094] Also, please read Fig. 9 In the case where the orthographic projection of the branch structure 3312 on the plane where the second electrode 320 is located overlaps with at least two second electrodes 320, the connection structure 3313 and the branch structure 3312 can be located in the same diagonal edge region 3302, and the branch structure 3312 is located in a pair of diagonal edge regions 3302 (not shown in the figure). The electrode structure in the specific diagonal edge region 3302 can be set according to the shape and size of the branch structure 3312 and the connection structure 3313.

[0095] Another example, such as Fig.10As shown, the branch structure 3312 of the characteristic unit area 331 of the first electrode 310 is located in one of the three pairs of diagonal edge areas 3302 (i.e., a column of touch points 3011 on the left side of the characteristic unit area 331), and the orthographic projection of the branch structure 3312 on the plane where the second electrode 320 is located overlaps with at least two second electrodes 320.

[0096] When the characteristic unit area 331 is touched, the branch structures 3312 of at least two diagonal edge areas 3302 can overlap with another electrode, and can generate electrical signals. The degree of change of the generated electrical signals is greater than that of the electrical signals of other untouched unit areas 330. The electrical signals represented by the electrode structures in the diagonal edge areas 3302 can be utilized to calculate the coordinates of the touch points more accurately.

[0097] In some examples, such as Fig. 9 As shown, part of the main structure 3311 is located in the central area 3301, and the part of the main structure 3311 outside the central area 3301 is located in a pair of diagonal edge areas 3302. In addition, the branch structure 3312 of the characteristic unit area 331 of the first electrode 310 is at least located in a pair of diagonal edge areas 3302 on opposite sides of the central area 3301 along the first direction X.

[0098] And / or, the branch structure 3312 of the characteristic unit area 331 of the second electrode 320 is at least located in a pair of diagonal edge areas 3302 on opposite sides of the central area 3301 along the second direction Y (not shown in the figure, refer to Fig. 9 331 of the first electrode 310 shown).

[0099] In this way, combined Figure 6 As shown, the orthographic projection of the main structure 3311 of the first electrode 310 on the plane where the second electrode 320 is located can overlap with the branch structure 3312 of the second electrode 320; and the orthographic projection of the branch structure 3312 of the first electrode 310 on the plane where the second electrode 320 is located can overlap with the main structure 3311 of the second electrode 320. In this way, the area and shape of the overlapping area of ​​the first electrode 310 and the second electrode 320 are uniform, which is conducive to improving the uniformity of the touch sensing effect of the touch structure 300 and improving the touch performance of the touch structure 300.

[0100] In some examples, such as Figure 6 and Figure 7As shown, in the characteristic unit area 331 of the first electrode 310, the area where the orthographic projection of the main structure 3311 on the plane where the second electrode 320 is located overlaps with at least two second electrodes 320 can be larger than the area where the orthographic projection of part of the branch structure 3312 and at least part of the connecting structure 3313 located in a diagonal edge area 3302 overlaps with at least two second electrodes 320 on the plane where the second electrode 320 is located.

[0101] and / or, if Figure 5 and Figure 6 As shown, in the characteristic unit area 331 of the second electrode 320, the area where the orthographic projection of the main structure 3311 on the plane where the first electrode 310 is located overlaps with at least two first electrodes 310 can be larger than the area where the orthographic projection of part of the branch structure 3312 and at least part of the connecting structure 3313 located in a diagonal edge area 3302 overlaps with at least two first electrodes 310 on the plane where the first electrode 310 is located.

[0102] In this way, the degree of change of the electrical signal represented by the main structure 3311 is greater than the degree of change of the electrical signal of the branch structure 3312 and the connection structure 3313 surrounding the main structure 3311. When the touch unit 301 is touched, the greater degree of change of the electrical signal of the main structure 3311 can be sensed; at the same time, the electrical signals of the branch structure 3312 and the connection structure 3313 can also be used to improve the accuracy of determining the position of the main structure 3311, improve the position of the actual touch touch unit 301, and improve the accuracy of sensing the touch position. In addition, since the electrical signals of the branch structure 3312 and the connection structure 3313 can also be used, the probability of judging the sensed position as a noise point and ignoring the electrical signal of the touch point due to the small difference in the electrical signals between the main structure 3311 and the surrounding characteristic unit area 331 is reduced, thereby improving the sensitivity of sensing touch.

[0103] The following example illustrates the shape and size of the main structure 3311 and the branch structure 3312 of the feature unit area 331. It is understandable that in the process of illustrating the influence of the structure of the feature unit area 331 on the touch effect, an example is given in which one touch unit 331 is equivalent to one feature unit area 331 and one diagonal edge area 3302 is equivalent to one touch point 3311.

[0104] In some examples, such as Figure 8 to Figure 10 As shown, the main structure 3311 extends in a direction perpendicular to the first direction X. The extending direction of the connection structure 3313 intersects the first direction X. The main structures 3311 of multiple unit regions 330 of one first electrode 310 may be connected in sequence, and the branch structures 3312 of multiple characteristic unit regions 331 of one first electrode 310 may not be connected.

[0105] Similarly, the structure of the second electrode 320 is the same as that of the first electrode 310. The main structure 3311 extends in a direction perpendicular to the second direction Y. The extending direction of the connection structure 3313 intersects the second direction Y. The main structures 3311 of multiple unit regions 330 of one second electrode 320 are connected in sequence, and the branch structures 3312 of multiple characteristic unit regions 331 of one second electrode 320 are not connected.

[0106] The extension direction of the branch structure 3312 can intersect with the extension direction of the main structure 3311. For example, the extension direction of the branch structure 3312 can be a bar, a broken line or a curve, so as to achieve an effect in which the difference between the amount of electrical signals represented by the shape and size of the branch structure 3312 and the amount of electrical signals represented by the main structure 3311 is small, and the electrical signals of multiple touch points 3011 can be used to improve the accuracy of the touch position.

[0107] In other examples, such as Fig.11 As shown, the characteristic unit area 331 may include a main structure 3311 and two branch structures 3312 located on opposite sides of the main structure 3311, and a connection structure 3313 respectively connecting the two branch structures 3312 and the main structure 3311. The main structure 3311 may extend in a direction perpendicular to the first direction X. The extension direction of the connection structure 3313 intersects the first direction X. The main structures 3311 of multiple unit areas 330 of one first electrode 310 are connected in sequence, and the multiple branch structures 3312 of one first electrode 310 located on the same side of the main structure 3311 are connected in sequence.

[0108] In this way, when the extension directions of the first electrode 310 and the second electrode 320 intersect, the difference between the amount of electrical signals represented by the electrode structure in the diagonal edge area 3302 and the amount of electrical signals represented by the electrode structure in the central area 3301 is reduced, and on the basis of utilizing the amount of electrical signals represented by the electrode structure in the diagonal edge area 3302, the sensitivity of the amount of electrical signals represented by the electrode structure in the sensing central area 3301 is increased, thereby improving the touch accuracy.

[0109] In some examples, such as Fig.12 As shown, the feature unit region 331 may include one or more spaced branch structures 3312. In the case where the feature unit region 331 includes multiple branch structures 3312, the multiple branch structures 3312 are respectively located on both sides of the main structure 3311; and / or, the multiple branch structures 3312 located on one side of the main structure 3311 are spaced apart.

[0110] The more branch structures 3312 there are in the diagonal edge area 3302 and the smaller the spacing between adjacent branch structures 3312, the denser the electrodes that generate electrical signals in a characteristic unit area 331 are, electrical signals are generated in each area in the characteristic unit area 331, and the degree of change of the electrical signals is smaller than that in other surrounding characteristic unit areas 331. This manifests itself as a more uniform distribution of electrical signals in this characteristic unit area 331, making the touch sensing effect of any position in this characteristic unit area 331 more sensitive.

[0111] In some examples, the shapes and / or sizes of the branch structures 3312 of the plurality of feature unit regions 331 of the first electrode 310 may be different; and / or, the shapes and / or sizes of the branch structures 3312 of the plurality of feature unit regions 331 of the second electrode 320 may be different.

[0112] For example, Figure 8 As shown, the branch structures 3312 of the plurality of characteristic unit regions 331 of the first electrode 310 have the same shape and may have the same size.

[0113] For example, Figure 8 As shown, the branch structures 3312 of the characteristic unit region 331 have the same shape, which is a bar shape, and extend in the same direction, and the branch structures 3312 may have the same size.

[0114] Another example, such as Fig. 9 and Fig.10 As shown, among the plurality of characteristic unit regions 331 of the first electrode 310 , the shapes of the branch structures 3312 of some characteristic unit regions 331 may be the same, and the shapes of the branch structures 3312 of some characteristic unit regions 331 may be different.

[0115] For example, Fig.10 As shown, the first electrode 310 extending along the second direction Y includes four consecutive characteristic unit areas 331, the branch structures 3312 of the first characteristic unit area 331 and the fourth characteristic unit area 331 have the same shape, and the branch structures 3312 of the second characteristic unit area 331 and the third characteristic unit area 331 have different shapes.

[0116] The branch structures 3312 of different characteristic unit areas 331 have different shapes and sizes and can be set in different areas of the touch structure 300. For example, corresponding to the display area of ​​the touch panel 200 and the peripheral area surrounding the display area, compared with the branch structures 3312 in the touch structure 300 in the peripheral area surrounding the display area, the branch structures 3312 of the characteristic unit area 331 of the touch structure 300 in the display area can be set in larger numbers, and the branch structures 3312 are more densely distributed, thereby improving the touch sensitivity and touch accuracy of the frequently operated areas.

[0117] Similarly, the shape and / or size of the branch structures 3312 of the plurality of characteristic unit regions 331 of the second electrode 320 are the same as the shape and / or size of the branch structures 3312 of the first electrode 310 , and are not described again herein.

[0118] In this way, the first electrode 310 and the second electrode 320 have the same structure, and the changes in the electrical signals sensed by touch in different areas of the touch structure 300 are uniform, thereby improving the touch sensing performance.

[0119] In some examples, such as Figure 6 and Figure 8 As shown, the dimension of the first electrode 310 along the first direction X is a first dimension WA.

[0120] A dimension W1 of the main structure 3311 along the first direction X may be greater than or equal to 2 / 5 times the first dimension WA.

[0121] The dimension W2 of the branch structure 3312 along the first direction X may be greater than or equal to 1 / 5 of the first dimension WA. The dimension L of the branch structure 3312 along the second direction Y may be the same as the dimension WB of the second electrode 320 along the second direction Y.

[0122] The size WB of the second electrode 320 along the second direction Y may be the same as the first size WA of the first electrode 310 along the first direction X.

[0123] For example, Figure 3 As shown, the spacing H1 between two adjacent first electrodes 310 along the first direction X is 4 mm to 5 mm. For example, H1 is 5 mm. The dimension W1 of the main structure 3311 along the first direction X is 2 mm. The dimension W2 of the branch structure 3312 along the first direction X is 1 mm. The dimension L of the branch structure 3312 along the second direction Y may be the same as the dimension WB of the second electrode 320 along the second direction Y, both of which are 5 mm.

[0124] Based on the shapes and sizes of the first electrode 310 and the second electrode 320 of the touch control structure 300, as shown in FIG. Fig.12 As shown, a simulation experiment result is provided to reflect the touch effect of a touch unit 3011 (such as a feature unit area 331 ). The size of a diagonal edge area 3302 or a center area 3301 in the feature unit area 331 may correspond to the size of a touch point 3011 .

[0125] For example, a stylus pen is used, and the side length of the tip of the stylus pen may be 0.7 mm to 1.5 mm. When the stylus pen contacts the touch panel 200 , the tip of the stylus pen can contact at least one touch point 3011 .

[0126] The electrical signal of the actual touch point 3011 (represented by the main structure 3311 of the characteristic unit area 331) is 220mA. The difference between the electrical signal of the actual touch point 3011 and the electrical signals of the eight peripheral touch points 3011 surrounding the touch point 3011 is smaller than the difference between the electrical signals of the touch point 3011 at any other position. In this way, the electrical signals of the actual touch point 3011 and other surrounding touch points 3011 change smoothly, and the electrical signals of the eight peripheral touch points 3011 surrounding the touch point 3011 can be utilized. The eight electrical signals include 32mA, 71mA, 34mA, 68mA, 29mA, 66mA, 27mA and 65mA. Then, the eight electrical signals will be involved in the calculation to determine the coordinates of the actual touch point 3011, thereby improving the accuracy of the touch position.

[0127] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0128] It should be noted that the touch structure embodiments provided in the present application are embodiments of the same concept as the touch panel and the electronic device; the technical features in the technical solutions recorded in the embodiments can be arbitrarily combined without conflict. However, it should be further noted that the touch electrode structure provided in the embodiments of the present application, the combination of its various technical features can already solve the technical problem to be solved by the present application; therefore, the touch structure provided in the embodiments of the present application may not be limited by the touch panel and the electronic device provided in the embodiments of the present application, and any device including the touch structure provided in the embodiments of the present application is within the scope of protection of the present application.

[0129] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A touch structure, characterized in that: include: A plurality of first electrodes are arranged at intervals along a first direction; A plurality of second electrodes are located in a different layer from the plurality of first electrodes and are arranged at intervals along a second direction; the first direction intersects the second direction; Wherein, the first electrode and / or the second electrode comprises a plurality of unit regions disposed adjacent to each other, and the plurality of unit regions disposed adjacent to each other comprises at least one characteristic unit region; The orthographic projection of the characteristic unit area of ​​the first electrode on the plane where the second electrode is located overlaps with at least two of the second electrodes; The characteristic unit region includes a main structure, a branch structure, and a connection structure connecting the main structure and the branch structure, and there is a gap between the branch structure and the main structure; When the characteristic unit area is touched, the branch structure, the connection structure and the main structure of the characteristic unit area all undergo electrical signal changes, and the degree of electrical signal change of the branch structure and / or the connection structure and the main structure is different.

2. The touch control structure according to claim 1, characterized in that: The characteristic unit area includes a central area and a plurality of pairs of diagonal edge areas located on opposite sides of the central area; At least part of the main structure is located in the central area; the branch structure is located in at least one pair of the diagonal edge areas, or the branch structure is located in at least one of the diagonal edge areas of the two pairs of the diagonal edge areas.

3. The touch control structure according to claim 2, characterized in that: The branch structure of the characteristic unit region of the first electrode is at least located in a pair of diagonal edge regions on opposite sides of the central region along the first direction; And / or, the branch structure of the characteristic unit region of the second electrode is at least located in a pair of diagonal edge regions on opposite sides of the central region along the second direction.

4. The touch control structure according to claim 2, characterized in that: In the characteristic unit region of the first electrode, an area where an orthographic projection of the main structure on the plane where the second electrode is located overlaps with at least two of the second electrodes is larger than an area where an orthographic projection of a portion of the branch structure and at least a portion of the connection structure located in one of the diagonal edge regions overlaps with at least two of the second electrodes; And / or, in the characteristic unit area of ​​the second electrode, the area where the orthographic projection of the main structure on the plane where the first electrode is located overlaps with at least two of the first electrodes is larger than the area where the orthographic projection of part of the branch structure and at least part of the connecting structure located in one of the diagonal edge areas overlaps with at least two of the first electrodes.

5. The touch control structure according to claim 2, characterized in that: The main structure extends in a direction perpendicular to the first direction; the extending direction of the connecting structure intersects with the first direction; The main structures of the multiple unit regions of one first electrode are connected in sequence, and the branch structures of the multiple characteristic unit regions of one first electrode are not connected.

6. The touch control structure according to claim 1, characterized in that: The characteristic unit region includes one or more spaced branch structures; In the case where the characteristic unit region includes a plurality of branch structures, the plurality of branch structures are respectively located on both sides of the main structure; and / or, The plurality of branch structures located on one side of the main structure are arranged at intervals.

7. The touch control structure according to claim 1, characterized in that: The branch structures of the plurality of characteristic unit regions of the first electrode may have different shapes and / or sizes; and / or, The branch structures of the plurality of characteristic unit regions of the second electrode may have different shapes and / or sizes.

8. A touch panel, characterized in that: include: substrate; A touch structure is arranged on one side of the substrate; the touch structure includes a plurality of first electrodes and a plurality of second electrodes located in different layers; the first electrode and / or the second electrode include a plurality of unit areas arranged adjacent to each other, and the plurality of unit areas arranged adjacent to each other include at least one characteristic unit area; when the characteristic unit area is touched, the branch structure, the connection structure and the main structure of the characteristic unit area all undergo electrical signal changes, and the degree of electrical signal change of the branch structure and / or the connection structure is different from that of the main structure.

9. The touch panel according to claim 8, characterized in that: The substrate comprises a display substrate, and the display substrate comprises a plurality of pixel units arranged in an array; The touch control structure comprises a plurality of touch control units arranged in an array; the orthographic projection of one of the touch control units on the display substrate overlaps with at least one of the pixel units; Parts of the first electrodes in at least two adjacent characteristic unit regions and parts of the second electrodes in at least two adjacent characteristic unit regions are located in one touch control unit.

10. An electronic device, characterized in that: include: A touch panel, comprising a substrate and a touch structure disposed on the substrate; the touch structure comprising a plurality of touch units arranged in an array, one of the touch units comprising a plurality of adjacent touch points; when one of the touch points in the touch unit is touched, electrical signals of the touch point and at least two touch points surrounding the touch point change to different degrees; The processor is used to drive the touch panel and determine the touch point of the touch panel.

Images