Touch substrate and touch display device

Abstract

The present disclosure provides a touch substrate and a touch display device, and relates to the technical field of touch control, and is used to solve the problem of poor detection accuracy of touch position at the edge of the touch substrate. The touch substrate comprises a plurality of electrode plates. The plurality of electrode plates are located on the same virtual reference surface, and the plurality of electrode plates are arranged adjacently. The minimum closed graphic area where the plurality of electrode plates are located as a whole is a touch area. The surface of each electrode plate away from the virtual reference surface is a sensing surface. Among them, the plurality of electrode plates comprise a plurality of first electrode plates. Each first electrode plate has a specified edge, and the specified edge constitutes part of the boundary of the touch area. At least one specified edge is arc-shaped. The area of the sensing surface of each first electrode plate ranges from 10 mm2 to 35 mm2. The touch substrate provided by the present disclosure can be applied to a touch display device.

Description

Technical Field

[0001] The present disclosure relates to the field of touch technology, for example, to a touch substrate and a touch display device. Background Art

[0002] In the related art, a touch substrate is usually used to detect a touch position. However, the detection accuracy of the touch position at the edge of the touch substrate is relatively poor, which affects the accuracy and reliability of the touch substrate. Summary of the Invention

[0003] The present disclosure aims to provide a touch substrate and a touch display device, which are used to solve the technical problem in the related art that the edge of the touch substrate has poor detection accuracy for the touch position.

[0004] On the one hand, a touch substrate is provided. The touch substrate includes a plurality of electrode plates. The plurality of electrode plates are located on the same virtual reference surface, and the plurality of electrode plates are arranged adjacent to each other. The minimum closed graphic area where the plurality of electrode plates are located as a whole is the touch area. The surface of each electrode plate facing away from the virtual reference surface is the sensing surface. Among them, the plurality of electrode plates include a plurality of first electrode plates. Each first electrode plate has a designated edge, and the designated edge constitutes a part of the boundary of the touch area. At least one designated edge is arc-shaped. The area of ​​the sensing surface of each first electrode plate is in the range of 10 mm 2 ~35mm 2 .

[0005] In some embodiments, the plurality of electrode plates further include a plurality of second electrode plates. The plurality of second electrode plates are located on a side of the plurality of first electrode plates away from the boundary of the touch area. The area of ​​the sensing surface of each second electrode plate is in the range of 10 mm 2 ~40mm 2 .

[0006] In some embodiments, a ratio of an area of ​​the sensing surface of the first electrode plate to an area of ​​the sensing surface of the second electrode plate is in a range of 0.6 to 1.5.

[0007] In some embodiments, a ratio of an area of ​​the sensing surface of the first electrode plate to an area of ​​the sensing surface of the second electrode plate is in a range of 0.95 to 1.05.

[0008] In some embodiments, the orthographic projection of each second electrode plate on the virtual reference plane is a polygon.

[0009] In some embodiments, the plurality of first electrode plates includes a first irregular electrode plate and a second irregular electrode plate. The first irregular electrode plate includes a first arc-shaped side, a first side and a second side. The first arc-shaped side is a designated side of the first irregular electrode plate. The first side of the first irregular electrode plate is connected to one end of the first arc-shaped side, and the second side of the first irregular electrode plate is connected to the other end of the first arc-shaped side. The first side of the first irregular electrode plate is away from the one end of the first arc-shaped side, and the first side of the first irregular electrode plate is connected to the second side of the first irregular electrode plate away from the one end of the first arc-shaped side. The first side of the first irregular electrode plate is perpendicular to the second side of the first irregular electrode plate. The second irregular electrode plate is arranged adjacent to the first side of the first irregular electrode plate, and a first gap is formed between the first side of the first irregular electrode plate and the second irregular electrode plate. Each of the plurality of second electrode plates is a square. The plurality of second electrode plates includes a first square electrode plate and a second square electrode plate. The first square electrode plate is arranged adjacent to the second side of the first irregular electrode plate. The second square electrode plate is arranged adjacent to the first square electrode plate and the second irregular electrode plate. A second gap is formed between the first square electrode plate and the second square electrode plate. The second gap is on the same straight line as the first gap.

[0010] In some embodiments, an area of a sensing surface of the first irregular electrode plate is smaller than an area of a sensing surface of the second irregular electrode plate.

[0011] In some embodiments, a length of each of the plurality of second electrode plates ranges from 3.17 mm to 6.32 mm.

[0012] In some embodiments, the plurality of first electrode plates includes a third irregular electrode plate, a fourth irregular electrode plate and a fifth irregular electrode plate. The third irregular electrode plate includes a second arc-shaped side, a first side and a second side. The second arc-shaped side is a designated side of the third irregular electrode plate. The first side of the third irregular electrode plate is connected to one end of the second arc-shaped side, and the second side of the third irregular electrode plate is connected to the other end of the second arc-shaped side. The extension direction of the first side of the third irregular electrode plate is perpendicular to the extension direction of the second side of the third irregular electrode plate. The fourth irregular electrode plate is arranged adjacent to the first side of the third irregular electrode plate. The fifth irregular electrode plate is arranged adjacent to the second side of the third irregular electrode plate.

[0013] In some embodiments, each of the plurality of second electrode plates is a square, and a length of each of the plurality of second electrode plates ranges from 5 mm to 6 mm.

[0014] In some embodiments, the third irregular electrode plate further comprises a third edge and a fourth edge. The third edge of the third irregular electrode plate is connected to the first edge of the third irregular electrode plate at an end away from the second arc-shaped edge, and the fourth edge of the third irregular electrode plate is connected to the second edge of the third irregular electrode plate at an end away from the second arc-shaped edge. An end of the third edge of the third irregular electrode plate away from the first edge of the third irregular electrode plate is connected to an end of the fourth edge of the third irregular electrode plate away from the second edge of the third irregular electrode plate, and the third edge of the third irregular electrode plate is perpendicular to the fourth edge of the third irregular electrode plate. The plurality of second electrode plates comprises a first rectangular electrode plate, a second rectangular electrode plate, and a third square electrode plate. The first rectangular electrode plate is arranged adjacent to the third edge of the third irregular electrode plate. The second rectangular electrode plate is arranged adjacent to the fourth edge of the third irregular electrode plate. The third square electrode plate is arranged adjacent to the first rectangular electrode plate and the second rectangular electrode plate.

[0015] In some embodiments, the length of the third edge of the third irregular electrode plate is the same as the length of a side edge of the first rectangular electrode plate adjacent to the third irregular electrode plate. The length of the fourth edge of the third irregular electrode plate is the same as the length of a side of the second rectangular electrode plate adjacent to the third irregular electrode plate.

[0016] In some embodiments, the area of the sensing surface of the third square electrode plate is smaller than the area of the sensing surface of the first rectangular electrode plate. The area of the sensing surface of the third square electrode plate is also smaller than the area of the sensing surface of the second rectangular electrode plate.

[0017] In some embodiments, the area of the sensing surface of at least part of the first electrode plate is the same as the area of the sensing surface of at least part of the second electrode plate.

[0018] In some embodiments, the plurality of first electrode plates comprises a sixth irregular electrode plate, a seventh irregular electrode plate, and an eighth irregular electrode plate. The sixth irregular electrode plate comprises a third arc-shaped edge, a first edge, and a second edge. The third arc-shaped edge is a designated edge of the sixth irregular electrode plate. The first edge of the sixth irregular electrode plate is connected to one end of the third arc-shaped edge, and the second edge of the sixth irregular electrode plate is connected to the other end of the third arc-shaped edge. The first edge of the sixth irregular electrode plate is parallel to the second edge of the sixth irregular electrode plate. The seventh irregular electrode plate is arranged adjacent to the first edge of the sixth irregular electrode plate. The eighth irregular electrode plate is arranged adjacent to the second edge of the sixth irregular electrode plate.

[0019] In some embodiments, each of the second electrode plates is square-shaped, and the length of each side of each of the second electrode plates is in the range of 4mm to 4.2mm.

[0020] In some embodiments, the first electrode plate is fan-ring-shaped. The second electrode plate is fan-shaped.

[0021] In some embodiments, each of the plurality of first electrode plates is fan-shaped.

[0022] In some embodiments, the touch substrate further comprises a plurality of touch leads. One touch lead is electrically connected with one electrode plate. The plurality of touch leads are led out of the touch area along the gaps between the plurality of electrode plates. Alternatively, the touch substrate further comprises an insulating layer. The insulating layer is located between the plurality of electrode plates and the plurality of touch leads. The insulating layer is provided with a plurality of vias. One touch lead is electrically connected with one electrode plate through at least one via.

[0023] In another aspect, a touch display device is provided. The touch display device comprises a display panel and the touch substrate of the first aspect described above. The touch substrate is arranged on the display side of the display panel.

[0024] The touch substrate and the touch display device provided by the present disclosure have the following beneficial effects:

[0025] The touch device provided by the embodiments of the present disclosure sets the area of the sensing surface of each first electrode plate in a range of 10mm 2 ~35mm 2 On the one hand, the area of the sensing surface of the first electrode plate is prevented from being too large (e.g., greater than 35mm 2 ), so that the capacitance value of the first electrode plate is prevented from being too large, the influence of the coupling capacitance caused by the touch position on the capacitance value of the first electrode plate is increased, the positioning difficulty of the first electrode plate for the touch position is reduced, and the detection accuracy of the first electrode plate for the touch position is improved.

[0026] On the other hand, the area of the sensing surface of the first electrode plate is prevented from being too small (e.g., less than 10mm 2 ), so that the influence of the touch position on the capacitance values of the plurality of first electrode plates is reduced, the positioning difficulty of the first electrode plate for the touch position is reduced, and the detection accuracy of the first electrode plate for the touch position is improved.

[0027] In addition, the area of the sensing surface of the first electrode plate is prevented from being too small, and under the premise that the area of the touch area is unchanged, the number of first electrode plates can also be reduced, so that the amount of output electrical signals of the touch substrate is reduced, the processing difficulty of the electrical signals is reduced, and the detection accuracy for the touch position is further improved. Moreover, reducing the number of first electrode plates can also simplify the structure, reduce the cost of the touch substrate, and improve the production efficiency of the touch substrate.

[0028] Since the specified edge of the first electrode plate constitutes part of the boundary of the touch area, the first electrode plate can be arranged at the edge of the touch substrate. In this way, the area of the sensing surface of the first electrode plate is not too large or too small, and the detection accuracy of the touch position by the first electrode plate is improved, so that the detection accuracy of the touch position at the edge of the touch substrate is improved, thereby improving the reliability of the touch substrate.

[0029] The touch display device provided by the embodiments of the present disclosure includes the touch substrate as described above, and thus has all the beneficial effects described above, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly introduced as follows. Obviously, the drawings in the following description are only some drawings of the embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, actual timing of signals, etc. of the products involved in the embodiments of the present disclosure.

[0031] Figure 1 Structure diagram of an electronic device according to some embodiments;

[0032] Figure 2 Structure diagram of a touch display device according to some embodiments;

[0033] Figure 3A Structure diagram of a touch display device according to some other embodiments;

[0034] Figure 3B Structure diagram of a touch substrate according to some embodiments;

[0035] Figure 4 Structure diagram of a touch substrate according to some other embodiments;

[0036] Figure 5 Structure diagram of a touch substrate according to some other embodiments;

[0037] Figure 6 Structure diagram of Figure 3B Simulation result diagram of area A;

[0038] Figure 7 Structure diagram of a touch substrate according to some other embodiments;

[0039] Figure 8 Simulation result diagram of area B; Figure 7

[0040] Figure 9 ​is a structural diagram of a touch substrate according to some further embodiments;

[0041] Figure 10 for Figure 9 Simulation results of area C in the middle;

[0042] Figure 11 is a structural diagram of a touch substrate according to some further embodiments;

[0043] Figure 12 is a structural diagram of a touch substrate according to some further embodiments;

[0044] Figure 13 is a structural diagram of a touch substrate according to some further embodiments;

[0045] Figure 14 is a structural diagram of a touch substrate according to some further embodiments;

[0046] Figure 15 is a structural diagram of a touch lead according to some embodiments;

[0047] Figure 16 is a structural diagram of touch leads according to some other embodiments;

[0048] Figure 17 is a structural diagram of a touch display device according to some further embodiments. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0050] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and its alternative forms, such as the third-person singular form "comprises" and the present participle form "comprising," are to be interpreted as open and inclusive, meaning "including, but not limited to." Throughout the specification, the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0051] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0052] When describing some embodiments, the term "connected" and its derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the embodiments disclosed herein.

[0053] As used herein, "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0054] As used herein, "parallel" or "perpendicular" includes the recited condition and conditions that are approximately the recited condition, the approximation being within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurements at issue and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, where the acceptable range of deviation for approximately parallel can be, for example, within 5°; "perpendicular" includes absolute perpendicular and approximately perpendicular, where the acceptable range of deviation for approximately perpendicular can also be, for example, within 5°.

[0055] As used herein, "the same" can be exactly the same or approximately the same.

[0056] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate or intervening layers can also be present.

[0057] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples. In the interest of clarity, not all of the layer and regions are shown in the drawings with the same dimensions. For example, the thickness of layers and regions can be exaggerated in the drawings. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated in the drawings, which are schematic, but include shapes that deviate from the shapes of the regions shown in the drawings due to, e.g., manufacturing. For example, an etched region illustrated as a rectangle will typically have a curved shape. Therefore, the regions illustrated in the drawings are schematic and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the exemplary embodiments in terms of scope.

[0058] Figure 1 Figure 1 is a structural diagram of an electronic device 300 according to some embodiments. Please refer to Figure 1 Some embodiments of the present disclosure provide an electronic device 300. The electronic device 300 can include a smart door access, a music player, a washing machine, an air conditioner, or a refrigerator, etc. electronic products with touch function. The embodiments of the present disclosure do not further limit the form of the electronic device 300, and the structure of the electronic device 300 is exemplified below.

[0059] As Figure 1 shown, the electronic device 300 includes a touch substrate 100 and a plurality of touch keys 312, and the plurality of touch keys 312 respectively correspond to different regions of the touch substrate 100. It can be understood that the touch keys 312 are used to guide the user to touch different positions of the touch substrate 100.

[0060] The touch substrate 100 can detect the touch position and convert the touch position into an electrical signal. In this way, the running state of the electronic device 300 can be controlled according to the electrical signal output by the touch substrate 100, for example, the electronic device 300 is started, stopped, temperature is raised or temperature is lowered, so that the electronic device 300 can realize different functions, and the use convenience of the electronic device 300 is improved.

[0061] In addition, Figure 1 Six touch keys 312 are taken as an example for illustration, but the number and position of the touch keys 312 are not limited in the present disclosure. In some other embodiments, the number of the touch keys 312 can also be one, two, three, four, five, seven or more. Moreover, the touch keys 312 can be located at the edge region of the touch substrate 100 or at the middle region of the touch substrate 100.

[0062] Figure 2 A structural diagram of a touch display device 200 according to some embodiments is shown. Please refer to Figure 2 Some embodiments of the present disclosure provide a touch display device 200. It can be understood that the touch display device 200 is also an electronic device.

[0063] For example, the touch display device 200 is a mobile phone, a tablet computer, a television, a smart wearable product (for example, a smart watch, a smart bracelet), a virtual reality terminal device, an augmented reality terminal device, or other electronic products with image display function.

[0064] It can be understood that the touch display device 200 can display dynamic images such as video or game pictures, and can also display static images such as pictures. Embodiments of the present disclosure do not further limit the touch display device 200, and the structure of the touch display device 200 is exemplarily described below.

[0065] As shown in Figure 2 The touch display device 200 includes a display panel 210 and a touch substrate 100, the display panel 210 is used to display images, and the touch substrate 100 is used to detect touch positions.

[0066] The display panel 210 has a display side for displaying images. The display panel 210 can be a liquid crystal display panel (English full name: Liquid Crystal Display, English abbreviation: LCD), or an organic light emitting diode display panel (English full name: Organic Light-Emitting Diode, English abbreviation: OLED) or quantum dot light emitting diodes (QLED for short).

[0067] In some embodiments, the display panel 210 can have a square, circular, polygonal, or other irregular shape, etc., improving the flexibility of the touch display device 200.

[0068] The touch substrate 100 is disposed on the display side of the display panel 210. Understandably, the touch substrate 100 is of transparent material, which can avoid blocking the displayed image on the display side. In addition, the touch substrate 100 can detect the touch position and convert the touch position into an electrical signal output, so that the touch display device 200 can realize the touch function.

[0069] In some embodiments, the display panel 210 includes a display area and a peripheral area. The display area is used to display images, and the peripheral area is used to set connection lines and structures such as binding flexible printed circuits (FPCs).

[0070] In some embodiments, the shape and area of the touch substrate 100 can be the same as the shape and area of the display area.

[0071] In some embodiments, the touch display device 200 can further include a touch IC. The touch IC can be disposed on the peripheral area of the display panel 210, or can also be disposed on the FPC or the host circuit board, to receive the electrical signal output by the touch substrate 100 and process the electrical signal. In this way, the display content of the display panel 210 can be controlled according to the electrical signal output by the touch substrate 100, improving the use convenience of the touch display device 200.

[0072] As described above, the touch substrate 100 can detect the touch position. For example, the touch substrate 100 can detect the touch position of a human finger. The principle of detecting the touch position by the touch substrate 100 will be described below by taking the detection of the touch position of a human finger by the touch substrate 100 as an example.

[0073] In some embodiments, the touch substrate 100 can be a self-capacitance capacitive touch substrate. The self-capacitance capacitive touch substrate includes a plurality of arrayed electrode plates, and each electrode plate is insulated from each other. Each electrode plate and the ground can form a capacitance. When a human finger touches any electrode plate, the capacitance of the human finger will be superimposed on the corresponding electrode plate, thereby changing the capacitance value between the electrode plate and the ground. In this way, by obtaining the capacitance value between each electrode plate and the ground, the touch position of the human finger can be determined, and the touch position can be converted into an electrical signal, so that the touch substrate 100 can realize the position detection function.

[0074] Figure 3A FIG. 1 is a structural diagram of a touch display device 200 according to some embodiments. The following description is made with reference to FIG. 1. Figure 3A The positional relationship between the touch substrate 100 and the display panel 210 is described by way of example.

[0075] In some embodiments, as shown in FIG. 2, the display panel 210 includes a substrate 218, light emitting devices EL, and an encapsulation layer 216. Figure 3A

[0076] In some examples, the substrate 218 can be a rigid substrate or a flexible substrate. In some examples, the substrate 218 is made of any one of plastic, FR-4 grade material, resin, glass, quartz, polyimide, or polymethyl methacrylate (PMMA).

[0077] The light emitting devices EL are arranged on one side of the substrate 218. It is understood that the light emitting devices EL are configured to emit light. The light emitting devices EL are arranged in an array. In some examples, the light emitting devices EL are configured to emit white light. In some other examples, the light emitting devices EL are configured to emit blue light. In yet some other examples, some of the light emitting devices EL are configured to emit red light, some of the light emitting devices EL are configured to emit green light, and some of the light emitting devices EL are configured to emit blue light.

[0078] In some examples, the light emitting device EL includes an anode layer AND, a cathode layer CTD, and a light emitting layer 212. The anode layer AND is arranged on one side of the substrate 218, and the light emitting layer 212 is arranged on a side of the anode layer AND away from the substrate 218. The cathode layer CTD is arranged on a side of the light emitting layer 212 away from the anode layer AND.

[0079] In some examples, the light emitting layer 212 includes electroluminescent material. It is understood that electroluminescence refers to a phenomenon in which organic semiconductors emit light by recombination of excitons formed by injection and transport of carriers, and the light emitting layer 212 emits light. The anode layer AND is made of metal, such as copper or silver. The cathode layer CTD is made of transparent material, such as transparent indium tin oxide (ITO) or transparent indium zinc oxide (IZO), so that light emitted by the light emitting layer 212 can be emitted through the cathode layer CTD. In some examples, the display panel 210 described above can be referred to as a top emission display panel.

[0080] ​In some examples, at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron blocking layer (EBL) is disposed between the anode layer AND and the light-emitting layer 212 along the direction from the anode layer AND to the light-emitting layer 212. Also, at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole blocking layer (HBL) is disposed between the cathode layer CTD and the light-emitting layer 212 along the direction from the cathode layer CTD to the light-emitting layer 212 to improve the light emission reliability of the light-emitting device EL.

[0081] The encapsulation layer 216 is located on a side of the plurality of light emitting devices EL away from the substrate 218. It can be understood that the encapsulation layer 216 is used to encapsulate and protect the light emitting devices EL. For example, the material of the encapsulation layer 216 includes an organic material.

[0082] In some examples, the display panel 210 further includes a driving circuit 214. The driving circuit 214 includes a driving transistor DT, which is electrically connected to the light-emitting device EL so that the light-emitting device EL can emit light under the driving action of the driving circuit 214. For example, the driving transistor DT can be a thin film transistor (TFT).

[0083] In some embodiments, as Figure 3A As shown, the touch substrate 100 is located on the surface of the encapsulation layer 216 away from the substrate 218. For example, the structure in which the touch substrate 100 is located on the surface of the encapsulation layer 216 away from the substrate 218 can be called a flexible multi-layer structure (Full name: Flexible Multi-Layer On Cell, English abbreviation FMLOC).

[0084] Figure 3B FIG. 1 is a structural diagram of a touch substrate 100 according to some embodiments. Figure 4 1 is a structural diagram of a touch substrate 100 according to some other embodiments. Figure 5 FIG is a structural diagram of a touch substrate 100 according to some other embodiments. Figure 3B to Figure 5 , the structure of the touch substrate 100 is described with an example.

[0085] In some embodiments, asFigure 3B As shown, the touch substrate 100 includes a plurality of electrode plates 101. In an example, the plurality of electrode plates 101 are arranged in a grid array on a surface of the encapsulation layer 216 away from the substrate 218.

[0086] It can be understood that any electrode plate 101 can form a capacitance with the ground. As described above, the touch substrate 100 can be transparent, and thus, in some embodiments, the material of the electrode plate 101 can be transparent indium tin oxide (English full name: Indium Tin Oxide, English abbreviation: ITO) or transparent indium zinc oxide (English full name: Indium Zinc Oxide, English abbreviation: IZO), etc.

[0087] Referring to Figure 3B , the plurality of electrode plates 101 are located on the same virtual reference surface M. It can be understood that the virtual reference surface M is a reference surface that does not actually exist, and is used to derive the arrangement relationship between the plurality of electrode plates 101. In some embodiments, the virtual reference surface M can be a plane (i.e., as Figure 3B indicated), and in other embodiments, the virtual reference surface M can also be a curved surface. In yet other embodiments, the virtual reference surface M can also include a plane and a curved surface at the same time. In this way, the touch substrate 100 can not only be applicable to a flat display panel 210, but also to a display panel 210 including a curved surface, improving the applicability of the touch substrate 100.

[0088] The plurality of electrode plates 101 are arranged adjacent to each other. It can be understood that the plurality of electrode plates 101 are insulated from each other, avoiding mutual influence of the capacitances formed between different electrode plates 101. In some embodiments, as Figure 3B indicated, the plurality of electrode plates 101 have a gap L between them, so that the plurality of electrode plates 101 can be insulated from each other.

[0089] In some embodiments, as Figure 3B indicated, the edges of the two electrode plates 101 adjacent to each other can be straight lines, so that the gap L between the two adjacent electrode plates 101 can be in a straight line shape. In other embodiments, as Figure 4 indicated, the edges of the two electrode plates 101 adjacent to each other can also be curved lines, such as wavy lines or arc lines, etc., so that the gap L between the two adjacent electrode plates 101 can be in a wavy shape or a curved shape, reducing the risk of being identified by the naked eye, i.e., reducing the risk of visual texture appearing on the display panel 210 or the electronic device 300, improving the reliability of the touch display device 200.

[0090] As Figure 3BAs shown, the smallest enclosed graphic area where the plurality of electrode plates 101 are located is a touch area 102. It can be understood that the touch area 102 includes the plurality of electrode plates 101 and the gaps L between the plurality of electrode plates 101. Touch operations within the touch area 102 can be detected by the touch substrate 100 and converted into electrical signals. In some embodiments, the touch area 102 can be circular in shape.

[0091] The surface of each electrode plate 101 facing away from the virtual reference plane M is the sensing surface 103. It can be understood that the sensing surface 103 is the surface of the electrode plate 101 away from the display panel 210. The sensing surface 103 is used to sense the coupling capacitance caused by a touch, thereby enabling the touch substrate 100 to detect the touch location. In some embodiments, the area of ​​the sensing surface 103 is the same as that of the electrode plate 101.

[0092] like Figure 3B As shown, the plurality of electrode plates 101 include a plurality of first electrode plates 110 . Each first electrode plate 110 has a designated edge 1101 , which constitutes a portion of the boundary 104 of the touch area 102 .

[0093] It is understood that the boundary 104 of the touch area 102 includes the designated edges 1101 of each first electrode plate 110 and a virtual edge connecting two adjacent designated edges 1101. It should be noted that any virtual edge can have the same trend as the designated edge 1101 connecting the virtual edge, for example, the two can have the same curvature, or can extend along the same straight line.

[0094] It should be noted that Figure 3B The designated side 1101 and the edge of the touch area 102 are separated from each other only for the convenience of displaying the touch area 102 , and no restriction is imposed on the positional relationship between the designated side 1101 and the edge of the touch area 102 .

[0095] At least one designated edge 1101 is arc-shaped. It is understood that in embodiments of the present disclosure, arc-shaped includes not only circular arcs but also other curved arcs. In some embodiments, some designated edges 1101 may be arc-shaped, while other designated edges 1101 may be straight lines or wavy shapes. In other embodiments, all designated edges 1101 may be arc-shaped.

[0096] In some embodiments, as Figure 3B As shown, the designated edges 1101 of each first electrode plate 110 are all arc-shaped, so that the designated edges 1101 of the plurality of first electrode plates 110 can be arranged to form a circular touch area 102. In other embodiments, such as Figure 5As shown, the designated sides 1101 of some first electrode plates 110 are arc-shaped, and the designated sides 1101 of other first electrode plates 110 are straight lines, so that the plurality of first electrode plates 110 can form a sector-shaped touch area 102 .

[0097] Understandably, when the sensing surface 103 of the first electrode plate 110 is too large, the first electrode plate 110's accuracy in detecting touch positions is reduced. Because the first electrode plate 110 is positioned at the edge of the touch substrate 100, the touch position detection accuracy at the edge of the touch substrate 100 is reduced, affecting the reliability of the touch substrate 100. The following example illustrates how a large sensing surface 103 of the first electrode plate 110 can reduce the first electrode plate's 110 accuracy in detecting touch positions.

[0098] Taking the touch panel 100 as a self-capacitive capacitive touch panel as an example, if the sensing surface 103 of the first electrode plate 110 is too large, the capacitance between the first electrode plate 110 and ground will increase, thereby reducing the effect of the coupling capacitance caused by a finger touch on the capacitance between the first electrode plate 110 and ground. This makes it more difficult to detect the touch position of a finger, thereby affecting the accuracy of the first electrode plate 110 in detecting the touch position.

[0099] Figure 6 for Figure 3B The simulation results of area A are shown in the figure below. Figure 3B and Figure 6 , the simulation results of the touch substrate 100 of some embodiments of the present disclosure are illustrated.

[0100] For example, Figure 3B As shown, in some embodiments, the area of ​​the sensing surface 103 of the first electrode plate 110 is too large, for example, larger than 35 mm 2 The A region of the touch substrate 100 is simulated, and the simulation results are as follows: Figure 6 shown. Figure 6 Point T is the actual touch point, and point S is the simulated point. Taking the four actual touch points T11 to T14 as an example, the straight-line distance between the actual touch point T11 and the simulated point S11 is 0.55mm, the straight-line distance between the actual touch point T12 and the simulated point S12 is 3.10mm, the straight-line distance between the actual touch point T13 and the simulated point S13 is 1.49mm, and the straight-line distance between the actual touch point T14 and the simulated point S14 is 0.34mm.

[0101] It can be seen that since the area of ​​the sensing surface 103 of the first electrode plate 110 is too large (greater than 35mm 2), resulting in a maximum error value of 3.10 mm between the actual touch point T and the simulation point S, which affects the detection accuracy of the touch position at the edge of the touch substrate 100 and reduces the reliability of the touch substrate 100.

[0102] Understandably, when the sensing surface 103 of the first electrode plate 110 is too small, a human finger touch may cause the capacitance values ​​of multiple first electrode plates 110 to change, similarly making it difficult to locate the touch position. Furthermore, when the sensing surface 103 of the first electrode plate 110 is too small, more first electrode plates 110 are required for the same touch area 102, increasing the amount of electrical signals output by the touch substrate 100 and the difficulty in processing the output electrical signals, thereby reducing the accuracy of touch position detection.

[0103] It can be seen that if the area of ​​the sensing surface 103 of the first electrode plate 110 is too large or too small, the accuracy of the touch position detected by the first electrode plate 110 will be affected, that is, the detection accuracy of the touch position at the edge of the touch substrate 100 will be affected.

[0104] Figure 7 1 is a structural diagram of a touch substrate 100 according to some further embodiments.

[0105] In some embodiments, as Figure 7 As shown, the area of ​​the sensing surface 103 of each first electrode plate 110 ranges from 10 mm 2 ~35mm 2 .

[0106] It is understandable that the area of ​​the sensing surface 103 of each first electrode plate 110 is set to a value range of 10 mm 2 ~35mm 2 On the one hand, it avoids the area of ​​the sensing surface 103 of the first electrode plate 110 being too large (for example, larger than 35mm 2 ), thereby avoiding an excessively large capacitance value of the first electrode plate 110, increasing the influence of the coupling capacitance caused by the touch position on the capacitance value of the first electrode plate 110, reducing the difficulty of locating the touch position by the first electrode plate 110, and improving the detection accuracy of the touch position by the first electrode plate 110.

[0107] On the other hand, it avoids the area of ​​the sensing surface 103 of the first electrode plate 110 being too small (eg less than 10 mm 2 ), thereby avoiding the impact of the touch position on the capacitance values ​​of the multiple first electrode plates 110, reducing the difficulty of locating the touch position by the first electrode plate 110, and improving the detection accuracy of the touch position by the first electrode plate 110.

[0108] Furthermore, by preventing the sensing surface 103 of the first electrode plate 110 from being too small, the number of first electrode plates 110 can be reduced while maintaining the area of ​​the touch area 102. This reduces the amount of electrical signals output by the touch substrate 100, easing the difficulty of processing the electrical signals and further improving the accuracy of touch position detection. Furthermore, reducing the number of first electrode plates 110 can simplify the structure, reduce the cost of the touch substrate 100, and improve the production efficiency of the touch substrate 100.

[0109] Because the designated edge 1101 of the first electrode plate 110 forms part of the boundary 104 of the touch area 102, the first electrode plate 110 can be positioned at the edge of the touch substrate 100. This prevents the sensing surface 103 of the first electrode plate 110 from being too large or too small, improves the accuracy of the first electrode plate 110 in detecting a touch position, and thus improves the accuracy of detecting a touch position at the edge of the touch substrate 100, thereby improving the reliability of the touch substrate 100.

[0110] Figure 8 for Figure 7 The simulation results of area B are shown in the figure below. Figure 7 and Figure 8 , the simulation results of the touch substrate 100 of other embodiments of the present disclosure are illustrated.

[0111] For example, Figure 7 As shown, the B region of the touch substrate 100 is simulated, and the simulation results are shown in FIG. Figure 8 shown. Figure 8 Point T is the actual touch point, and point S is the simulated point. Taking the four actual touch points T21 to T24 as an example, the straight-line distance between the actual touch point T21 and the simulated point S21 is 0.34mm, the straight-line distance between the actual touch point T22 and the simulated point S22 is 0.30mm, the straight-line distance between the actual touch point T23 and the simulated point S23 is 0.30mm, and the straight-line distance between the actual touch point T24 and the simulated point S24 is 0.29mm.

[0112] It can be seen that by setting the area of ​​the sensing surface 103 of each first electrode plate 110 to be within the range of 10 mm 2 ~35mm 2 , so that the maximum error between the actual touch point T and the simulated point S is reduced to 0.34 mm, which greatly improves the detection accuracy of the touch position by the first electrode plate 110. In other words, the detection accuracy of the touch position at the edge of the touch substrate 100 is improved, thereby improving the reliability of the touch substrate 100.

[0113] It is understandable that the shapes of the plurality of first electrode plates 110 and the areas of the sensing surface 103 may be the same or different. In some embodiments, the area of ​​the sensing surface 103 of the first electrode plate 110 may range from 14.44 mm to 14.44 mm. 2 ~35mm 2 , 18mm 2 ~32mm 2 , 20mm 2 ~30mm 2 , 22mm 2 ~28mm 2 or 24.5mm 2 ~26.5mm 2 For example, the area of ​​the sensing surface 103 of the first electrode plate 110 may be 12 mm 2 , 15mm 2 , 18mm 2 , 21mm 2 , 25mm 2 , 27mm 2 , 29mm 2 , 31mm 2 , or 33mm 2 wait.

[0114] In some embodiments, as Figure 3B As shown, the touch substrate 100 includes a total of 24 electrode plates 101. Considering one electrode plate 101 as one electrical signal output channel, the touch substrate 100 has 24 channels. Among them, the number of first electrode plates 110 is 8. In other embodiments, such as Figure 7 As shown, the touch substrate 100 includes 32 electrode plates 101 , that is, the touch substrate 100 has 32 channels, wherein the number of the first electrode plates 110 is 16.

[0115] It can be seen that under the premise that the area of ​​the touch area 102 remains unchanged, compared with Figure 3B The touch substrate 100 shown increases the number of first electrode plates 110, that is, increases the number of channels at the edge of the touch substrate 100, which can reduce the area of ​​the sensing surface 103 of each first electrode plate 110, thereby improving the detection accuracy of the first electrode plate 110 for the touch position.

[0116] In some embodiments, as Figure 7 As shown, the plurality of electrode plates 101 further include a plurality of second electrode plates 120 . The plurality of second electrode plates 120 are located on a side of the plurality of first electrode plates 110 away from the boundary 104 of the touch area 102 .

[0117] It can be understood that the plurality of second electrode plates 120 are located on the side of the plurality of first electrode plates 110 away from the boundary 104 of the touch area 102, that is, the side of the plurality of second electrode plates 120 away from the specified edge 1101 of the plurality of first electrode plates 110, so that the second electrode plate 120 can be arranged away from the edge of the touch substrate 100.

[0118] It can be understood that the number of second electrode plates 120 and first electrode plates 110 can be the same or different. The area of the sensing surface 103 of the plurality of second electrode plates 120 can be the same or different. The area of the sensing surface 103 of the second electrode plate 120 and the area of the sensing surface 103 of the first electrode plate 110 can be the same or different.

[0119] In some embodiments, as shown in FIG. 1B, the number of second electrode plates 120 is 16, that is, the number of channels of the touch substrate 100 away from the edge position is 16. Figure 7

[0120] As can be seen from the above, if the area of the sensing surface 103 of the first electrode plate 110 is too large or too small, it will affect the accuracy of the touch position detected by the first electrode plate 110. Similarly, if the area of the sensing surface 103 of the second electrode plate 120 is too large or too small, it will also affect the accuracy of the touch position detected by the second electrode plate 120. Since the second electrode plate 120 is away from the edge of the touch substrate 100, it will affect the accuracy of the touch position detected by the touch substrate 100 away from the edge.

[0121] It can be understood that the principle of the area of the sensing surface 103 of the second electrode plate 120 affecting the detection accuracy of the second electrode plate 120 is the same as the principle of the area of the sensing surface 103 of the first electrode plate 110 affecting the detection accuracy of the first electrode plate 110, which will not be repeated here.

[0122] In order to improve the detection accuracy of the touch substrate 100 away from the edge, in some embodiments, the area of the sensing surface 103 of each second electrode plate 120 is in the range of 10mm 2 ~40mm 2 .

[0123] It can be understood that the area of the sensing surface 103 of each second electrode plate 120 is in the range of 10mm 2 ~40mm 2 , on the one hand, it avoids that the area of the sensing surface 103 of the second electrode plate 120 is too large (for example, greater than 40mm 2 ​), thereby avoiding the second electrode plate 120 from having an excessively large capacitance value, increasing the influence of the coupling capacitance caused by the touch position on the capacitance value of the second electrode plate 120, reducing the positioning difficulty of the second electrode plate 120 for the touch position, and improving the detection accuracy of the second electrode plate 120 for the touch position.

[0124] On the other hand, the area of the sensing surface 103 of the second electrode plate 120 is avoided from being excessively small (e.g., less than 10mm 2 ), thereby avoiding the touch position from affecting the capacitance values of the plurality of second electrode plates 120, reducing the positioning difficulty of the second electrode plate 120 for the touch position, and improving the detection accuracy of the second electrode plate 120 for the touch position.

[0125] In addition, the area of the sensing surface 103 of the second electrode plate 120 is avoided from being excessively small, and under the premise that the area of the touch area 102 is unchanged, the number of the second electrode plates 120 can also be reduced, thereby reducing the amount of the electric signal output by the touch substrate 100, reducing the processing difficulty of the electric signal, and further improving the detection accuracy for the touch position. In addition, reducing the number of the second electrode plates 120 can also simplify the structure, reduce the cost of the touch substrate 100, and improve the production efficiency of the touch substrate 100.

[0126] Since the second electrode plate 120 is arranged away from the edge of the touch substrate 100, the area of the sensing surface 103 of the second electrode plate 120 is avoided from being excessively large or small, and the detection accuracy of the second electrode plate 120 for the touch position is improved, which can improve the detection accuracy of the touch substrate 100 away from the edge for the touch position, thereby further improving the reliability of the touch substrate 100.

[0127] In some embodiments, the area of the sensing surface 103 of the second electrode plate 120 can be in the range of 14.44mm 2 ~37.21mm 2 , 15mm 2 ~35mm 2 , 18mm 2 ~32mm 2 , 20mm 2 ~30mm 2 , 22mm 2 ~28mm 2 , or 24.5mm 2 ~26.5mm 2 , etc. For example, the area of the sensing surface 103 of the second electrode plate 120 can be 12mm 2 , 15mm 2 , 18mm 2 , 22mm 2 , 25mm2 33mm 2 35mm 2 or 38mm 2 etc.

[0128] As can be seen from the above, the area of the sensing surface 103 of the first electrode plate 110 can be the same as or different from the area of the sensing surface 103 of the second electrode plate 120. In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 is in the range of 0.6 to 1.5.

[0129] It can be understood that, by setting the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 in the range of 0.6 to 1.5, the difference between the area of the sensing surface 103 of the first electrode plate 110 and the area of the sensing surface 103 of the second electrode plate 120 is avoided to be too large (for example, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 is greater than 1.5 or less than 0.6), thereby avoiding the difference between the output electrical signals of the first electrode plate 110 and the second electrode plate 120 to be too large, improving the uniformity between the area of the sensing surface 103 of the first electrode plate 110 and the area of the sensing surface 103 of the second electrode plate 120, thereby improving the uniformity and consistency of the output electrical signals between the first electrode plate 110 and the second electrode plate 120, reducing the difficulty of processing the electrical signals, improving the touch consistency of the touch substrate 100, thereby improving the accuracy and reliability of the touch substrate 100.

[0130] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be 0.7, 0.8, 0.9, 1.1, 1.2, 1.3, or 1.4, etc.

[0131] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be 1, that is, the area of the sensing surface 103 of the first electrode plate 110 is the same as or approximately the same as the area of the sensing surface 103 of the second electrode plate 120, further ensuring the uniformity and consistency of the output electrical signals between the first electrode plate 110 and the second electrode plate 120, improving the accuracy and reliability of the touch position detected by the touch substrate 100.

[0132] As described above, the number of the first electrode plates 110 and the second electrode plates 120 can be multiple. In some embodiments, the ratio of the area of the sensing surface 103 of any two first electrode plates 110 is in the range of 0.6-1.5, and the ratio of the area of the sensing surface 103 of any two second electrode plates 120 is also in the range of 0.6-1.5. In this way, the ratio of the area of the sensing surface 103 of any two electrode plates 101 is in the range of 0.6-1.5, which not only improves the uniformity and consistency of the output electrical signal between the first electrode plates 110 and the second electrode plates 120, but also improves the uniformity and consistency of the output electrical signal between any two electrode plates 101, further improving the reliability of the touch substrate 100.

[0133] In some embodiments, the ratio of the area of the sensing surface 103 of any two electrode plates 101 can be 0.7, 0.8, 0.9, 1.1, 1.2, 1.3, or 1.4, etc. It can be understood that the ratio of the area of the sensing surface 103 of any two first electrode plates 110, the ratio of the area of the sensing surface 103 of any two second electrode plates 120, and the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be the same or different.

[0134] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 is in the range of 0.8-1.2.

[0135] As described above, the smaller the difference between the area of the sensing surface 103 of the first electrode plate 110 and the area of the sensing surface 103 of the second electrode plate 120, the smaller the difference in the output electrical signal between the first electrode plate 110 and the second electrode plate 120, and the higher the accuracy of the touch substrate 100 in detecting the touch position.

[0136] Therefore, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 is in the range of 0.8-1.2, which further reduces the difference between the area of the sensing surface 103 of the first electrode plate 110 and the area of the sensing surface 103 of the second electrode plate 120, and improves the accuracy and reliability of the touch substrate 100 in detecting the touch position.

[0137] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be in the range of 0.9-1.1. For example, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be 0.85, 0.95, or 1.05, etc.

[0138] In some embodiments, the ratio of the area of the sensing surface 103 of any two first electrode plates 110 can be in the range of 0.8-1.2, and the ratio of the area of the sensing surface 103 of any two second electrode plates 120 can also be in the range of 0.8-1.2. In this way, the ratio of the area of the sensing surface 103 of any two electrode plates 101 can be in the range of 0.8-1.2, which improves the uniformity and consistency of the output electrical signal between any two electrode plates 101, and further improves the reliability of the touch substrate 100.

[0139] In some embodiments, the ratio of the area of the sensing surface 103 of any two electrode plates 101 can be in the range of 0.9-1.1. For example, the ratio of the area of the sensing surface 103 of any two electrode plates 101 can be 0.85, 0.95, or 1.05, etc.

[0140] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be in the range of 0.95-1.05.

[0141] It can be understood that by setting the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 in the range of 0.95-1.05, the difference between the area of the sensing surface 103 of the first electrode plate 110 and the area of the sensing surface 103 of the second electrode plate 120 is further reduced, which improves the accuracy and reliability of the touch substrate 100.

[0142] In some embodiments, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be in the range of 0.97-1.02 or 0.98-1.01, etc. For example, the ratio of the area of the sensing surface 103 of the first electrode plate 110 to the area of the sensing surface 103 of the second electrode plate 120 can be 0.98, 1.02, or 1.03, etc.

[0143] In some embodiments, the ratio of the area of the sensing surface 103 of any two first electrode plates 110 ranges from 0.95 to 1.05, and the ratio of the area of the sensing surface 103 of any two second electrode plates 120 also ranges from 0.95 to 1.05. In this way, the ratio of the area of the sensing surface 103 of any two electrode plates 101 ranges from 0.95 to 1.05, further improving the uniformity and consistency of the output electrical signal between any two electrode plates 101, and improving the accuracy and reliability of the touch substrate 100.

[0144] In some embodiments, the ratio of the area of the sensing surface 103 of any two electrode plates 101 can range from 0.97 to 1.02 or 0.98 to 1.01, etc. For example, the ratio of the area of the sensing surface 103 of any two electrode plates 101 is 0.98, 1.02, or 1.03, etc.

[0145] In some embodiments, as shown in Figure 3B each second electrode plate 120 has a polygonal shape in the virtual reference plane M.

[0146] It can be understood that the polygonal shape can be a square, a rectangle, a parallelogram, a triangle, a regular hexagon, etc. As can be seen from the above, as shown in Figure 4 the edge of the two electrode plates 101 adjacent to each other can be a curve, so the polygonal shape in the embodiments of the present disclosure can be an approximate polygonal shape formed by a curve.

[0147] By setting the projection of the second electrode plate 120 on the virtual reference plane to be a polygonal shape, the second electrode plate 120 and the first electrode plate 110 can form touch areas 102 of different shapes by adjusting the different shapes of the second electrode plate 120, thereby improving the flexibility of the touch substrate 100.

[0148] In addition, by setting the projection of the second electrode plate 120 on the virtual reference plane to be a polygonal shape, the structural regularity of the second electrode plate 120 can be improved, and the arrangement of multiple second electrode plates 120 is facilitated, thereby improving the production efficiency of the touch substrate 100.

[0149] As can be seen from the above, the electrode plate 101 includes a plurality of first electrode plates 110 and a plurality of second electrode plates 120. The structure of the first electrode plate 110 and the second electrode plate 120 in some embodiments of the present disclosure will be further described below. Figure 7

[0150] In some embodiments, as shown in Figure 7 ​As shown, the plurality of first electrode plates 110 includes a first irregular electrode plate 111a and a second irregular electrode plate 112a. Understandably, in embodiments of the present disclosure, the "irregular electrode plate" can be an irregular closed structure composed of an arc-shaped line segment and a straight line segment, or an irregular structure composed of a plurality of straight line segments. The "irregular electrode plate" is only used to distinguish from other shapes of electrode plates (such as square electrode plates and rectangular electrode plates, etc.), and embodiments of the present disclosure do not further limit the shape of the "irregular electrode plate".

[0151] Understandably, the number of the first irregular electrode plate 111a and the second irregular electrode plate 112a can be multiple. The shape and number of the first irregular electrode plate 111a and the second irregular electrode plate 112a can be the same or different. The area of the sensing surface 103 of the first irregular electrode plate 111a and the area of the sensing surface 103 of the second irregular electrode plate 112a can be the same or different.

[0152] As shown, the first irregular electrode plate 111a includes a first arc-shaped edge 1110a, a first edge 1111a, and a second edge 1112a. The first arc-shaped edge 1110a is a designated edge 1101 of the first irregular electrode plate 111a. In some embodiments, the first arc-shaped edge 1110a can be a circular arc. Figure 7

[0153] The first edge 1111a of the first irregular electrode plate 111a is connected to one end of the first arc-shaped edge 1110a, and the second edge 1112a of the first irregular electrode plate 111a is connected to the other end of the first arc-shaped edge 1110a. Understandably, the length of the first edge 1111a of the first irregular electrode plate 111a and the length of the second edge 1112a of the first irregular electrode plate 111a can be the same or different.

[0154] The first edge 1111a of the first irregular electrode plate 111a is connected to one end of the first arc-shaped edge 1110a, and the second edge 1112a of the first irregular electrode plate 111a is connected to the other end of the first arc-shaped edge 1110a. Understandably, the length of the first edge 1111a of the first irregular electrode plate 111a and the length of the second edge 1112a of the first irregular electrode plate 111a can be the same or different.

[0155] As shown, the first irregular electrode plate 111a includes a first arc-shaped edge 1110a, a first edge 1111a, and a second edge 1112a. The first arc-shaped edge 1110a is a designated edge 1101 of the first irregular electrode plate 111a. In some embodiments, the first arc-shaped edge 1110a can be a circular arc. Figure 7 ​As shown, the second irregular electrode plate 112a is arranged adjacent to the first side 1111a of the first irregular electrode plate 111a. In this way, by adjusting the shape or area of the first irregular electrode plate 111a, the second irregular electrode plate 112a and the second electrode plate 120, a touch control area 102 of different shape can be formed, improving the flexibility of the touch control substrate 100.

[0156] In some embodiments, as shown in FIG. 1A, the first irregular electrode plate 111a and the second irregular electrode plate 112a are arranged in a staggered manner. Figure 7 As shown, the shape of each second electrode plate 120 is a square. The plurality of first irregular electrode plates 111a, the plurality of second irregular electrode plates 112a and the plurality of square second electrode plates 120 can form a circular touch control area 102. Understandably, by adjusting the length of different edges of the first irregular electrode plate 111a, the second irregular electrode plate 112a and the second electrode plate 120, the diameter of the circular touch control area 102 can be adjusted, improving the flexibility of the touch control substrate 100.

[0157] As shown in FIG. 1A, the plurality of second electrode plates 120 includes a first square electrode plate 121 and a second square electrode plate 122. Figure 7 In some embodiments, the length of the side of the first square electrode plate 121 is the same as the length of the side of the second square electrode plate 122, that is, the area of the sensing surface 103 of the first square electrode plate 121 is the same or approximately the same as the area of the sensing surface 103 of the second square electrode plate 122.

[0158] The first square electrode plate 121 is arranged adjacent to the second side 1112a of the first irregular electrode plate 111a, and the second square electrode plate 122 is arranged adjacent to the first square electrode plate 121 and the second irregular electrode plate 112a.

[0159] In some embodiments, the length of the side of the first square electrode plate 121 is the same as the length of the second side 1112a of the first irregular electrode plate 111a. The length of the side of the second square electrode plate 122 is the same as the length of the edge of the second irregular electrode plate 112a close to the second square electrode plate 122, improving the regularity of the touch control substrate 100.

[0160] In some examples, as shown in FIG. 1A, the plurality of second electrode plates 120 further includes a fourth square electrode plate 127. Figure 7 The fourth square electrode plate 127 is arranged adjacent to the first square electrode plate 121 and the second square electrode plate 122, and the fourth square electrode plate 127 is away from each irregular electrode plate (including the first irregular electrode plate 111a and the second irregular electrode plate 112a).

[0161] For example, the first square electrode plate 121, the second square electrode plate 122 and the fourth square electrode plate 127 have the same side length, further improving the regularity of the touch substrate 100.

[0162] In some embodiments, as shown in FIG. 1, the first irregular electrode plate 111a and the second irregular electrode plate 112a are arranged in a staggered manner. Figure 7 As shown in FIG. 1, the second irregular electrode plate 112a and the first side 1111a of the first irregular electrode plate 111a have a first gap L1. The second square electrode plate 122 and the first square electrode plate 121 have a second gap L2, and the second gap L2 and the first gap L1 are located on the same straight line.

[0163] In this way, the arrangement regularity between the first irregular electrode plate 111a, the second irregular electrode plate 112a, the first square electrode plate 121 and the second square electrode plate 122 is improved, that is, the arrangement regularity between the first electrode plate 110 and the second electrode plate 120 is improved, thereby improving the processing convenience of the touch substrate 100 and reducing the production cost of the touch substrate 100.

[0164] In some embodiments, as shown in FIG. 1, the first irregular electrode plate 111a and the second irregular electrode plate 112a are arranged in a staggered manner. Figure 7 As shown in FIG. 1, the second irregular electrode plate 112a and the first side 1111a of the first irregular electrode plate 111a have a first gap L1. The second square electrode plate 122 and the first square electrode plate 121 have a second gap L2, and the second gap L2 and the first gap L1 are located on the same straight line.

[0165] In some embodiments, as shown in FIG. 1, the first irregular electrode plate 111a and the second irregular electrode plate 112a are arranged in a staggered manner. Figure 7 As shown in FIG. 1, the second irregular electrode plate 112a and the first side 1111a of the first irregular electrode plate 111a have a first gap L1. The second square electrode plate 122 and the first square electrode plate 121 have a second gap L2, and the second gap L2 and the first gap L1 are located on the same straight line.

[0166] As can be seen from the above, the area of the sensing surface 103 of the first irregular electrode plate 111a and the area of the sensing surface 103 of the second irregular electrode plate 112a can be the same or different. In some embodiments, the area of the sensing surface 103 of the first irregular electrode plate 111a is smaller than the area of the sensing surface 103 of the second irregular electrode plate 112a.

[0167] It can be understood that by setting the area of the sensing surface 103 of the first irregular electrode plate 111a to be smaller than the area of the sensing surface 103 of the second irregular electrode plate 112a, the area of the sensing surface 103 of the first irregular electrode plate 111a is further reduced, and the accuracy of the touch position detected by the first irregular electrode plate 111a is improved.

[0168] And, the area of the sensing surface 103 of the first irregular electrode plate 111a is set to be smaller than the area of the sensing surface 103 of the second irregular electrode plate 112a, so that the specified edge 1101 of the first irregular electrode plate 111a and the specified edge 1101 of the second irregular electrode plate 112a are arranged to form a circular arc shape on the basis that the first gap L1 and the second gap L2 are located on the same straight line, thereby improving the regularity of the touch substrate 100.

[0169] In some embodiments, the areas of the sensing surfaces 103 of the plurality of second electrode plates 120 are the same. The area of the sensing surface 103 of the first irregular electrode plate 111a is 0.6 times the area of the sensing surface 103 of any one of the second electrode plates 120. The area of the sensing surface 103 of the second irregular electrode plate 112a is 0.9 times the area of the sensing surface 103 of any one of the second electrode plates 120.

[0170] In this way, on the basis that the area of the sensing surface 103 of the first irregular electrode plate 111a is smaller than the area of the sensing surface 103 of the second irregular electrode plate 112a, the ratio of the areas of the sensing surfaces 103 of any two electrode plates 101 can be in the range of 0.6 to 1.5, thereby avoiding too large differences in the areas of the sensing surfaces 103 between any two electrode plates 101, ensuring that the uniformity of the output electrical signals of the touch substrate 100 is improved, and the accuracy and reliability of the touch substrate 100 are improved.

[0171] In some embodiments, the length of each side of each second electrode plate 120 is in the range of 3.17 mm to 6.32 mm.

[0172] As described above, the area of the sensing surface 103 of the second electrode plate 120 is in the range of 10 mm 2 to 40 mm 2 , and the shape of the second electrode plate 120 is a square. Therefore, the length of each side of each second electrode plate 120 is set to be in the range of 3.17 mm to 6.32 mm, so that the area of the sensing surface 103 of the second electrode plate 120 can meet the requirements on the basis of improving the regularity of the structure of the second electrode plate 120, thereby avoiding the area of the sensing surface 103 of the second electrode plate 120 being too large or too small, and ensuring the accuracy of the touch position detected by the touch substrate 100.

[0173] In some embodiments, the length of each side of the second electrode plate 120 can be in the range of 3.8 mm to 6.1 mm, i.e., the area of the sensing surface 103 of the second electrode plate 120 is in the range of 14.44 mm 2 to 37.21 mm 2In some embodiments, the length of the second electrode plate 120 can also range from 4 mm to 6 mm, from 4.2 mm to 5.8 mm, from 4.5 mm to 5.5 mm, or from 4.7 mm to 5.3 mm, etc. For example, the length of the second electrode plate 120 can be 3.3 mm, 3.5 mm, 3.9 mm, 4.5 mm, 4.8 mm, 5 mm, 5.3 mm, 5.8 mm, or 6.2 mm, etc.

[0174] Figure 9 A structural diagram of a touch substrate 100 according to yet another embodiment is shown. As described above, in some embodiments, the plurality of first electrode plates 110 includes a first irregular electrode plate 111a and a second irregular electrode plate 112a. In other embodiments, as shown in FIG. 1C, the plurality of first electrode plates 110 includes a third irregular electrode plate 111b, a fourth irregular electrode plate 112b, and a fifth irregular electrode plate 113b. Figure 9

[0175] It can be understood that the number of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, and the fifth irregular electrode plate 113b can be more than one. The shape and number of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, and the fifth irregular electrode plate 113b can be the same or different. The area of the sensing surface 103 of the third irregular electrode plate 111b, the area of the sensing surface 103 of the fourth irregular electrode plate 112b, and the area of the sensing surface 103 of the fifth irregular electrode plate 113b can be the same or different.

[0176] For example, as shown in FIG. 1C, the third irregular electrode plate 111b includes a second arc-shaped side 1110b, a first side 1111b, and a second side 1112b. The second arc-shaped side 1110b is a designated side 1101 of the third irregular electrode plate 111b, and in some embodiments, the second arc-shaped side 1110b can be a circular arc shape. Figure 9

[0177] The first side 1111b of the third irregular electrode plate 111b is connected to one end of the second arc-shaped side 1110b, and the second side 1112b of the third irregular electrode plate 111b is connected to the other end of the second arc-shaped side 1110b. The extension direction of the first side 1111b of the third irregular electrode plate 111b is perpendicular to the extension direction of the second side 1112b of the third irregular electrode plate 111b.

[0178] In some embodiments, as shown in FIG. 1C, the fourth irregular electrode plate 112b includes a first arc-shaped side 1120b, a first side 1121b, and a second side 1122b. The first arc-shaped side 1120b is a designated side 1101 of the fourth irregular electrode plate 112b, and in some embodiments, the first arc-shaped side 1120b can be a circular arc shape. Figure 9 ​​As shown, the third irregular electrode plate 111b can further include a third edge 1113b and a fourth edge 1114b. The third edge 1113b of the third irregular electrode plate 111b is connected to one end of the first edge 1111b of the third irregular electrode plate 111b away from the second arc edge 1110b. The fourth edge 1114b of the third irregular electrode plate 111b is connected to one end of the second edge 1112b of the third irregular electrode plate 111b away from the second arc edge 1110b. One end of the third edge 1113b of the third irregular electrode plate 111b away from the first edge 1111b of the third irregular electrode plate 111b is connected to one end of the fourth edge 1114b of the third irregular electrode plate 111b away from the second edge 1112b of the third irregular electrode plate 111b, and the third edge 1113b of the third irregular electrode plate 111b is perpendicular to the fourth edge 1114b of the third irregular electrode plate 111b.

[0179] In this way, the second arc edge 1110b, the first edge 1111b of the third irregular electrode plate 111b, the second edge 1112b of the third irregular electrode plate 111b, the third edge 1113b of the third irregular electrode plate 111b, and the fourth edge 1114b of the third irregular electrode plate 111b can form a closed third irregular electrode plate 111b.

[0180] As shown, Figure 9 The fourth irregular electrode plate 112b is arranged adjacent to the first edge 1111b of the third irregular electrode plate 111b, and the fifth irregular electrode plate 113b is arranged adjacent to the second edge 1112b of the third irregular electrode plate 111b. In this way, by adjusting the shapes or areas of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, the fifth irregular electrode plate 113b, and the second electrode plate 120, a touch control area 102 of different shapes can be formed, improving the flexibility of the touch control substrate 100.

[0181] In some embodiments, as shown, Figure 9 The third irregular electrode plate 111b, the fourth irregular electrode plate 112b, the fifth irregular electrode plate 113b, and the square-shaped second electrode plate 120 can form a circular touch control area 102. Understandably, by adjusting the lengths of different edges of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, the fifth irregular electrode plate 113b, and the second electrode plate 120, the diameter of the circular touch control area 102 can be adjusted, improving the flexibility of the touch control substrate 100.

[0182] In some embodiments, as shown, Figure 9As shown, the plurality of second electrode plates 120 include a fifth square electrode plate 131, a sixth square electrode plate 132, and a seventh square electrode plate 133. For example, the fifth square electrode plate 131 is arranged adjacent to the third side 1113b of the third special-shaped electrode plate 111b and the fourth special-shaped electrode plate 112b. The sixth square electrode plate 132 is arranged adjacent to the fourth side 1114b of the third special-shaped electrode plate 111b and the fifth special-shaped electrode plate 113b. The seventh square electrode plate 133 is arranged adjacent to the fifth square electrode plate 131 and the sixth square electrode plate 132, and the seventh square electrode plate 133 is away from each special-shaped electrode plate (including the third special-shaped electrode plate 111b, the fourth special-shaped electrode plate 112b, and the fifth special-shaped electrode plate 113b).

[0183] Furthermore, the side lengths of the fifth, sixth, and seventh square electrode plates 131, 132, and 133 are identical. The lengths of the third side 1113b and fourth side 1114b of the third special-shaped electrode plate 111b and 1114b are identical to the side lengths of any second electrode plate 120 (including the fifth, sixth, and seventh square electrode plates 131, 132, and 133), further improving the structural regularity of the touch substrate 100.

[0184] In some embodiments, as Figure 9 As shown, there is a fifth gap L5 between two adjacent fourth special-shaped electrode plates 112b, and a sixth gap L6 between two adjacent fifth square electrode plates 131. The fifth gap L5 and the sixth gap L6 are located on the same straight line, further improving the regularity of the arrangement between the first electrode plate 110 and the second electrode plate 120.

[0185] like Figure 9 As shown, there is a seventh gap L7 between two adjacent fifth special-shaped electrode plates 113b, and an eighteenth gap L18 between two adjacent sixth square electrode plates 132, and the seventh gap L7 and the eighteenth gap L18 are located on the same straight line.

[0186] like Figure 9 As shown, a nineteenth gap L19 is located between two adjacent seven-square electrode plates 133. For example, there are two nineteenth gaps L19, and the two nineteenth gaps L19 are perpendicular to each other. The nineteenth gap L19, the fifth gap L5, and the sixth gap L6 are all located on the same straight line. Furthermore, the nineteenth gap L19, the seventh gap L7, and the eighteenth gap L18 are all located on the same straight line, further improving the regularity of the arrangement between the first electrode plate 110 and the second electrode plate 120.

[0187] In some embodiments, the side length of each second electrode plate 120 ranges from 5 mm to 6 mm.

[0188] As can be seen from the above, the area of the sensing surface 103 of the second electrode plate 120 ranges from 10mm 2 40mm 2 The length of each second electrode plate 120 ranges from 5mm to 6mm, which can satisfy the requirement of the area of the sensing surface 103 of the second electrode plate 120, and avoid the area of the sensing surface 103 of the second electrode plate 120 being too large or too small, thereby ensuring the reliability of the touch substrate 100.

[0189] In addition, the length of each second electrode plate 120 ranges from 5mm to 6mm, which can increase the sum of the areas of the sensing surfaces 103 of the second electrode plates 120, thereby reducing the sum of the areas of the sensing surfaces 103 of the first electrode plates 110 under the premise that the area of the touch area 102 remains unchanged. Understandably, reducing the sum of the areas of the sensing surfaces 103 of the first electrode plates 110 can reduce the number of the first electrode plates 110, further reducing the amount of the electrical signals output by the touch substrate 100, reducing the processing difficulty of the electrical signals, and improving the accuracy of the detected touch position.

[0190] In some embodiments, the length of each second electrode plate 120 can range from 5.1mm to 5.9mm, 5.2mm to 5.8mm, 5.3mm to 5.7mm, or 5.4mm to 5.6mm, etc. For example, the length of each second electrode plate 120 can be 5.15mm, 5.25mm, 5.55mm, 5.65mm, 5.75mm, or 5.85mm, etc.

[0191] In some embodiments, as shown in Figure 9 , the number of the first electrode plates 110 is 12, and the number of the second electrode plates 120 is also 12, that is, the number of the channels of the touch substrate 100 is 24.

[0192] Figure 10 For Figure 9 example, the simulation results of the C area of the touch substrate 100 are shown in Figure 9 and Figure 10 .

[0193] For example, as shown in Figure 9 , the C area of the touch substrate 100 is simulated, and the simulation results are shown in Figure 10 . Figure 10The middle T point is an actual touch point, and the S point is a simulation point obtained by simulation. Taking four actual touch points T31 to T34 as an example, a straight-line distance between the actual touch point T31 and the simulation point S31 is 0.29 mm, a straight-line distance between the actual touch point T32 and the simulation point S32 is 0.45 mm, a straight-line distance between the actual touch point T33 and the simulation point S33 is 0.53 mm, and a straight-line distance between the actual touch point T34 and the simulation point S34 is 0.29 mm. As can be seen, by the above setting, a maximum error value between the actual touch point T and the simulation point S is only 0.53 mm, and the accuracy of the touch substrate 100 is improved.

[0194] Figure 11 A structural diagram of the touch substrate 100 according to still some embodiments is shown. As can be seen from the above, in some embodiments, the shapes of the plurality of second electrode plates 120 are all squares. In other embodiments, as shown in FIG. 1C, the plurality of second electrode plates 120 include a first rectangular electrode plate 124, a second rectangular electrode plate 125, and a third square electrode plate 126. Understandably, the shapes of the first rectangular electrode plate 124 and the second rectangular electrode plate 125 can be squares or rectangles. Figure 11

[0195] Understandably, the number of the first rectangular electrode plate 124, the second rectangular electrode plate 125, and the third square electrode plate 126 can be the same or different. The areas of the sensing surfaces 103 of the first rectangular electrode plate 124, the second rectangular electrode plate 125, and the third square electrode plate 126 can be the same or different.

[0196] As shown in FIG. 1C, the first rectangular electrode plate 124 is arranged adjacent to the third side 1113b of the third irregular electrode plate 111b. The second rectangular electrode plate 125 is arranged adjacent to the fourth side 1114b of the third irregular electrode plate 111b. The third square electrode plate 126 is arranged adjacent to the first rectangular electrode plate 124 and the second rectangular electrode plate 125. Moreover, the third square electrode plate 126 is away from the irregular electrode plates (including the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, and the fifth irregular electrode plate 113b). Figure 11

[0197] Understandably, by adjusting the shapes or areas of the first rectangular electrode plate 124, the second rectangular electrode plate 125, and the third square electrode plate 126, different shapes of the touch area 102 can be formed, and the flexibility of the touch substrate 100 is improved.

[0198] In some embodiments, as shown in FIG. 1D, the plurality of second electrode plates 120 include a first irregular electrode plate 121, a second irregular electrode plate 122, and a third irregular electrode plate 123. Figure 11 ​​As shown, the plurality of first rectangular electrode plates 124 and the plurality of second rectangular electrode plates 125 can be arranged around the plurality of third square electrode plates 126 .

[0199] In some embodiments, a plurality of first rectangular electrode plates 124, a plurality of second rectangular electrode plates 125, a plurality of third square electrode plates 126, and a plurality of first electrode plates 110 (third special-shaped electrode plates 111b, fourth special-shaped electrode plates 112b, and fifth special-shaped electrode plates 113b) can form a circular touch area 102. It is understood that by adjusting the lengths of the different edges of the first rectangular electrode plates 124, the second rectangular electrode plates 125, the third square electrode plates 126, and the first electrode plates 110, the diameter of the circular touch area 102 can be adjusted, thereby increasing the flexibility of the touch substrate 100.

[0200] From the above, we can see that Figure 11 As shown, a fifth gap L5 is provided between two adjacent fourth special-shaped electrode plates 112b. In some embodiments, an eighth gap L8 is provided between two adjacent first rectangular electrode plates 124, and the fifth gap L5 and the eighth gap L8 are located on the same straight line.

[0201] As can be seen from the above, a seventh gap L7 is formed between two adjacent fifth special-shaped electrode plates 113b. In some embodiments, a tenth gap L10 is formed between two adjacent second rectangular electrode plates 125. The seventh gap L7 and the tenth gap L10 are located on the same straight line, further improving the regularity of the touch substrate 100.

[0202] In some embodiments, a ninth gap L9 is provided between two adjacent third square electrode plates 126. For example, there are two ninth gaps L9, and the two ninth gaps L9 are perpendicular to each other. The ninth gap L9, the fifth gap L5, and the eighth gap L8 are all located on the same straight line. Furthermore, the ninth gap L9, the tenth gap L10, and the seventh gap L7 are all located on the same straight line.

[0203] In some embodiments, the area of ​​the sensing surface 103 of the first rectangular electrode plate 124, the area of ​​the sensing surface 103 of the second rectangular electrode plate 125, and the area of ​​the sensing surface 103 of the third special-shaped electrode plate 111b are the same. Thus, the first rectangular electrode plate 124 is disposed adjacent to the third side 1113b of the third special-shaped electrode plate 111b, and the second rectangular electrode plate 125 is disposed adjacent to the fourth side 1114b of the third special-shaped electrode plate 111b. This allows electrode plates 101 having the same sensing surface 103 area to be disposed adjacent to each other, further improving the regularity of the arrangement of the touch substrate 100.

[0204] In some embodiments, as Figure 11As shown, the length of the third edge 1113b of the third irregular electrode plate 111b is the same as the length of the side edge of the first rectangular electrode plate 124 close to the third irregular electrode plate 111b. The length of the fourth edge 1114b of the third irregular electrode plate 111b is the same as the length of the side edge of the second rectangular electrode plate 125 close to the third irregular electrode plate 111b.

[0205] In this way, the regularity of the arrangement among the third irregular electrode plate 111b, the first rectangular electrode plate 124 and the second rectangular electrode plate 125 is further improved, thereby improving the processing convenience of the touch substrate 100.

[0206] In some examples, the length of the side of the third square electrode plate 126, the length of the side edge of the first rectangular electrode plate 124 close to the third square electrode plate 126, and the length of the side edge of the second rectangular electrode plate 125 close to the third square electrode plate 126 are the same.

[0207] In some embodiments, the area of the sensing surface 103 of the third square electrode plate 126 is smaller than the area of the sensing surface 103 of the first rectangular electrode plate 124. And, the area of the sensing surface 103 of the third square electrode plate 126 is also smaller than the area of the sensing surface 103 of the second rectangular electrode plate 125.

[0208] It can be understood that, by setting the area of the sensing surface 103 of the third square electrode plate 126 to be smaller than the area of the sensing surface 103 of the first rectangular electrode plate 124 and the area of the sensing surface 103 of the second rectangular electrode plate 125, the area of the sensing surface 103 of the third square electrode plate 126 is further reduced, and the accuracy of the touch position detected by the third square electrode plate 126 is improved.

[0209] And, by setting the area of the sensing surface 103 of the third square electrode plate 126 to be smaller than the area of the sensing surface 103 of the first rectangular electrode plate 124 and the area of the sensing surface 103 of the second rectangular electrode plate 125, the areas of the sensing surfaces 103 among the plurality of second electrode plates 120 are also different, and the flexibility of the touch substrate 100 is improved.

[0210] In some embodiments, the areas of the sensing surfaces 103 of the plurality of third square electrode plates 126 are the same. The ratio of the area of the sensing surface 103 of any one of the first rectangular electrode plate 124, the second rectangular electrode plate 125 and the third irregular electrode plate 111b to the area of the sensing surface 103 of the third square electrode plate 126 is 1.2. In this way, the ratio of the areas of the sensing surfaces 103 of any two electrode plates 101 can be in the range of 0.6-1.5, and the uniformity of the output electrical signal of the touch substrate 100 is further improved.

[0211] In some embodiments, the area of the sensing surface 103 of at least part of the first electrode plate 110 is the same as the area of the sensing surface 103 of at least part of the second electrode plate 120.

[0212] As can be seen from the above, Figure 9 In some embodiments, the first electrode plate 110 can include a third irregular electrode plate 111b, a fourth irregular electrode plate 112b, and a fifth irregular electrode plate 113b, and the shape of the second electrode plate 120 is a square. In this way, setting the area of the sensing surface 103 of at least part of the first electrode plate 110 to be the same as the area of the sensing surface 103 of at least part of the second electrode plate 120 can be that the area of the sensing surface 103 of any one of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, and the fifth irregular electrode plate 113b is the same as the area of the sensing surface 103 of the second electrode plate 120 (including the fifth square electrode plate 131, the sixth square electrode plate 132, and the seventh square electrode plate 133), further improving the accuracy and reliability of the touch substrate 100.

[0213] In some embodiments, as shown in Figure 9 The area of the sensing surface 103 of the fourth irregular electrode plate 112b, the area of the sensing surface 103 of the fifth irregular electrode plate 113b, and the area of the sensing surface 103 of the second electrode plate 120 are the same or approximately the same. The area of the sensing surface 103 of the third irregular electrode plate 111b is smaller than the area of the above three.

[0214] In some embodiments, the ratio of the area of the sensing surface 103 of the third irregular electrode plate 111b to any one of the area of the sensing surface 103 of the fourth irregular electrode plate 112b, the area of the sensing surface 103 of the fifth irregular electrode plate 113b, and the area of the sensing surface 103 of the second electrode plate 120 is 0.9.

[0215] In other embodiments, as shown in Figure 11 The second electrode plate 120 can also include a first rectangular electrode plate 124, a second rectangular electrode plate 125, and a third square electrode plate 126. In this way, setting the area of the sensing surface 103 of at least part of the first electrode plate 110 to be the same as the area of the sensing surface 103 of at least part of the second electrode plate 120 can be that the area of the sensing surface 103 of any one of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, and the fifth irregular electrode plate 113b is the same as the area of the sensing surface 103 of any one of the first rectangular electrode plate 124, the second rectangular electrode plate 125, and the third square electrode plate 126.

[0216] In some embodiments, the area of the sensing surface 103 of the third irregular electrode plate 111b, the area of the sensing surface 103 of the fourth irregular electrode plate 112b, the area of the sensing surface 103 of the fifth irregular electrode plate 113b, the area of the sensing surface 103 of the first rectangular electrode plate 124, and the area of the sensing surface 103 of the second rectangular electrode plate 125 are all the same or approximately the same. The area of the sensing surface 103 of the third square electrode plate 126 is smaller than the area of the sensing surface 103 of any of the above.

[0217] In some embodiments, the ratio of the area of the sensing surface 103 of any of the third irregular electrode plate 111b, the fourth irregular electrode plate 112b, the fifth irregular electrode plate 113b, the first rectangular electrode plate 124, and the second rectangular electrode plate 125 to the area of the sensing surface 103 of the third square electrode plate 126 is 1.2.

[0218] Figure 12 A structure diagram of the touch substrate 100 according to yet some embodiments.

[0219] In yet some embodiments, as shown in Figure 12 the sixth irregular electrode plate 111c, the seventh irregular electrode plate 112c, and the eighth irregular electrode plate 113c are included in the plurality of first electrode plates 110.

[0220] It can be understood that the number of the sixth irregular electrode plate 111c, the seventh irregular electrode plate 112c, and the eighth irregular electrode plate 113c can be multiple. The shape and number of the sixth irregular electrode plate 111c, the seventh irregular electrode plate 112c, and the eighth irregular electrode plate 113c can be the same or different. The area of the sensing surface 103 of the sixth irregular electrode plate 111c, the area of the sensing surface 103 of the seventh irregular electrode plate 112c, and the area of the sensing surface 103 of the eighth irregular electrode plate 113c can be the same or different.

[0221] For example, as shown in Figure 12 the sixth irregular electrode plate 111c includes a third arc-shaped side 1110c, a first side 1111c, and a second side 1112c. The third arc-shaped side 1110c is a designated side 1101 of the sixth irregular electrode plate 111c. In some embodiments, the third arc-shaped side 1110c can be a circular arc.

[0222] The first side 1111c of the sixth irregular electrode plate 111c is connected to one end of the third arc-shaped side 1110c, the second side 1112c of the sixth irregular electrode plate 111c is connected to the other end of the third arc-shaped side 1110c, and the first side 1111c of the sixth irregular electrode plate 111c and the second side 1112c of the sixth irregular electrode plate 111c are parallel.

[0223] Understandably, if Figure 12 As shown, the sixth special-shaped electrode plate 111c also includes a third side 1113c. The first side 1111c of the sixth special-shaped electrode plate 111c is located away from one end of the third curved side 1110c and is connected to one end of the third side 1113c of the sixth special-shaped electrode plate 111c. The second side 1112c of the sixth special-shaped electrode plate 111c is located away from one end of the third curved side 1110c and is connected to the other end of the third side 1113c of the sixth special-shaped electrode plate 111c.

[0224] In this way, the third arcuate side 1110c, the first side 1111c of the sixth special-shaped electrode plate 111c, the second side 1112c of the sixth special-shaped electrode plate 111c and the third side 1113c of the sixth special-shaped electrode plate 111c can form a closed sixth special-shaped electrode plate 111c.

[0225] like Figure 12 As shown, the seventh special-shaped electrode plate 112c is disposed adjacent to the first side 1111c of the sixth special-shaped electrode plate 111c. The eighth special-shaped electrode plate 113c is disposed adjacent to the second side 1112c of the sixth special-shaped electrode plate 111c. In this way, by adjusting the shapes or areas of the sixth special-shaped electrode plate 111c, the seventh special-shaped electrode plate 112c, the eighth special-shaped electrode plate 113c, and the second electrode plate 120, touch areas 102 of various shapes can be enclosed, thereby increasing the flexibility of the touch substrate 100.

[0226] In some embodiments, as Figure 12 As shown, each second electrode plate 120 is square in shape. Multiple sixth special-shaped electrode plates 111c, multiple seventh special-shaped electrode plates 112c, multiple eighth special-shaped electrode plates 113c, and multiple square second electrode plates 120 can form a circular touch area 102. It can be understood that by adjusting the lengths of the different edges of the sixth special-shaped electrode plates 111c, the seventh special-shaped electrode plates 112c, the eighth special-shaped electrode plates 113c, and the second electrode plates 120, the diameter of the circular touch area 102 can be adjusted, thereby improving the flexibility of the touch substrate 100.

[0227] For example, Figure 12 As shown, the plurality of second electrode plates 120 include an eighth square electrode plate 134, a ninth square electrode plate 135, a tenth square electrode plate 136, and an eleventh square electrode plate 137. The eighth square electrode plate 134 is disposed adjacent to the seventh special-shaped electrode plate 112c, the ninth square electrode plate 135 is disposed adjacent to the sixth special-shaped electrode plate 111c, and the tenth square electrode plate 136 is disposed adjacent to the eighth special-shaped electrode plate 113c.

[0228] In some examples, there are multiple eleventh square electrode plates 137 , and the multiple eleventh square electrode plates 137 are arranged in an array. In some examples, the eleventh square electrode plate 137 includes a first sub-electrode plate 1371 and a second sub-electrode plate 1372 .

[0229] The first sub-electrode plate 1371 is arranged adjacent to the eighth square electrode plate 134, the ninth square electrode plate 135 and the tenth square electrode plate 136, and the first sub-electrode plate 1371 is away from each special-shaped electrode plate (including the sixth special-shaped electrode plate 111c, the seventh special-shaped electrode plate 112c and the eighth special-shaped electrode plate 113c).

[0230] The second sub-electrode plate 1372 is disposed adjacent to the first sub-electrode plate 1371 and away from the eighth square electrode plate 134 , the ninth square electrode plate 135 , and the tenth square electrode plate 136 .

[0231] In some embodiments, the eighth square electrode plate 134 , the ninth square electrode plate 135 , the tenth square electrode plate 136 , and the eleventh square electrode plate 137 (including the first sub-electrode plate 1371 and the second sub-electrode plate 1372 ) have the same side length.

[0232] The length of the third side 1113c of the sixth special-shaped electrode plate 111c is the same as the side length of the ninth square electrode plate 135. The length of the edge of the seventh special-shaped electrode plate 112c on the side close to the eighth square electrode plate 134 is twice the length of the edge of the eighth square electrode plate 134. The length of the edge of the eighth special-shaped electrode plate 113c on the side close to the tenth square electrode plate 136 is twice the length of the side of the tenth square electrode plate 136.

[0233] In some embodiments, as Figure 12 As shown, there is an eleventh gap L11 between the seventh special-shaped electrode plate 112c and the first side 1111c of the sixth special-shaped electrode plate 111c. There is a twelfth gap L12 between the eighth square electrode plate 134 and the ninth square electrode plate 135. The eleventh gap L11 and the twelfth gap L12 are located on the same straight line.

[0234] A thirteenth gap L13 is defined between the eighth special-shaped electrode plate 113c and the second side 1112c of the sixth special-shaped electrode plate 111c, and a fourteenth gap L14 is defined between the ninth square electrode plate 135 and the tenth square electrode plate 136. The thirteenth gap L13 and the fourteenth gap L14 are located on the same straight line, further improving the structural regularity of the touch substrate 100.

[0235] In some embodiments, as Figure 12As shown, the second tenth gap L20 is between two adjacent eleventh square electrode plates 137. As an example, the number of the second tenth gap L20 is multiple, and at least two second tenth gaps L20 are parallel to each other. The second tenth gap L20 is on the same straight line as the eleventh gap L11 and the twelfth gap L12. In addition, the second tenth gap L20 is on the same straight line as the thirteenth gap L13 and the fourteenth gap L14.

[0236] As described above, the area of the second electrode plate 120 is in the range of 10mm 2 40mm 2 In addition, the shape of the second electrode plate 120 is a square. In some embodiments, the length of each side of the second electrode plate 120 is in the range of 4mm to 4.2mm.

[0237] The length of each side of the second electrode plate 120 is in the range of 4mm to 4.2mm, which improves the structural regularity of the second electrode plate 120, and makes the area of the sensing surface 103 of the second electrode plate 120 meet the requirements, avoiding the area of the sensing surface 103 of the second electrode plate 120 being too large or too small, thereby ensuring the reliability of the touch substrate 100.

[0238] In addition, the length of each side of the second electrode plate 120 is in the range of 4mm to 4.2mm, which increases the number of the second electrode plate 120 under the premise of the area of the touch area 102 being unchanged, thereby improving the accuracy of the touch position detected by the second electrode plate 120, that is, improving the accuracy and reliability of the touch substrate 100.

[0239] As an example, Figure 12 As shown, the number of the second electrode plate 120 is 25, the number of the first electrode plate 110 is 12, and the number of the channel of the touch substrate 100 is 37.

[0240] In some embodiments, the length of each side of the second electrode plate 120 can be in the range of 4.05mm to 4.15mm or 4.15mm to 4.2mm, etc. As an example, the length of each side of the second electrode plate 120 can be 4.05mm, 4.1mm, 4.12mm, or 4.17mm, etc.

[0241] In some embodiments, the areas of the sensing surfaces 103 of the plurality of second electrode plates 120 are the same, and the area of the sensing surface 103 of the sixth irregular electrode plate 111c, the area of the sensing surface 103 of the seventh irregular electrode plate 112c, and the area of the sensing surface 103 of the eighth irregular electrode plate 113c are the same as the area of the sensing surface 103 of the second electrode plate 120.

[0242] Figure 13FIG is a structural diagram of a touch substrate 100 according to some other embodiments. As can be seen from the above, in some embodiments, the shape of the orthographic projection of the second electrode plate 120 on the virtual reference plane M is a polygon. In other embodiments, such as Figure 13 As shown, the first electrode plate 110 is in the shape of a sector ring, and the second electrode plate 120 is in the shape of a sector.

[0243] It can be understood that the fan-shaped ring is a portion of a circular ring. Of the two arc-shaped sides of the fan-shaped ring, the longer one is the designated side 1101 of the first electrode plate 110. In this way, the fan-shaped first electrode plate 110 and the fan-shaped second electrode plate 120 can be arranged to form a circular touch area 102, thereby improving the convenience of arranging the first electrode plate 110 and the second electrode plate 120.

[0244] In some embodiments, the area of ​​the sensing surface 103 of the sector-shaped first electrode plate 110 is the same as or approximately the same as the area of ​​the sensing surface 103 of the sector-shaped second electrode plate 120 .

[0245] In some embodiments, as Figure 13 As shown, there is a fifteenth gap L15 between two adjacent sector-shaped first electrode plates 110 , and a sixteenth gap L16 between two adjacent sector-shaped second electrode plates 120 . The fifteenth gap L15 and the sixteenth gap L16 are located on the same straight line, further improving the structural regularity of the touch substrate 100 .

[0246] Figure 14 FIG is a structural diagram of a touch substrate 100 according to some other embodiments. As can be seen from the above, in some embodiments, the electrode plate 101 includes a plurality of first electrode plates 110 and a plurality of second electrode plates 120. In other embodiments, as Figure 14 As shown, the electrode plate 101 includes a plurality of first electrode plates 101 , and the shapes of the plurality of first electrode plates 110 are all fan-shaped.

[0247] It is understood that the electrode plate 101 includes multiple first electrode plates 110, and the multiple first electrode plates 110 are all fan-shaped, which further improves the convenience of arranging the first electrode plates 110, simplifies the structure of the multiple electrode plates 101, and facilitates the multiple first electrode plates 110 to surround and form a circular touch area 102. In some embodiments, the sensing surfaces 103 of the multiple first electrode plates 110 have the same area.

[0248] In some embodiments, the areas of the electrode plates 101 are the same.

[0249] It can be understood that the areas of the electrode plates 101 can be completely identical or approximately identical. The areas of the electrode plates 101 are set to be identical, which further ensures the uniformity of the output electrical signals between different electrode plates 101, thereby improving the accuracy and reliability of the touch substrate 100.

[0250] In some embodiments, the plurality of electrode plates 101 are centrally symmetrically distributed.

[0251] It can be understood that the plurality of electrode plates 101 are centrally symmetrically distributed, which improves the arrangement regularity of the plurality of electrode plates 101, thereby improving the detection convenience of the output electrical signals of the plurality of electrode plates 101, and further ensuring the detection accuracy of the touch substrate 100 for the touch position.

[0252] In addition, the plurality of electrode plates 101 are centrally symmetrically distributed, which also facilitates the arrangement of the plurality of electrode plates 101, further improves the production efficiency of the touch substrate 100, and reduces the production cost of the touch substrate 100.

[0253] In some embodiments, the touch area 102 is circular.

[0254] It can be understood that the touch area 102 is set to be circular, so that the touch substrate 100 can meet the use requirements of different touch display devices 200, and the applicability of the touch substrate 100 is improved.

[0255] Figure 15 FIG. 3 is a structural diagram of a touch lead 105 according to some embodiments. Figure 16 FIG. 4 is a structural diagram of a touch lead 105 according to other embodiments. Figure 17 FIG. 5 is a structural diagram of a touch display device according to still other embodiments. Hereinafter, the touch display device will be described with reference to FIG. 5. Figure 15 to Figure 17 The touch lead 105 of some embodiments of the present disclosure will be described.

[0256] In some embodiments, as shown in FIG. 1, the touch substrate 100 further includes a plurality of touch leads 105. One touch lead 105 is electrically connected to one electrode plate 101. Figure 15

[0257] It can be understood that the touch lead 105 is used for transmitting electrical signals. In some embodiments, the material of the touch lead 105 can be metal or other non-metal conductors, etc.

[0258] As described above, the electrode plate 101 can convert the touch position into an electrical signal. In this way, one touch lead 105 is electrically connected to one electrode plate 101, so that the converted electrical signal of the electrode plate 101 can be transmitted outward through the touch lead 105, thereby enabling the touch substrate 100 to realize the position detection function.

[0259] ​In some embodiments, the touch lead 105 can also be electrically connected with the touch IC, so that the touch IC can obtain the electrical signal converted by the electrode plate 101 through the touch lead 105.

[0260] In some embodiments, as shown in FIG. 1B, a plurality of touch leads 105 are led out of the touch area 102 along the gap L between the electrode plates 101. Figure 15

[0261] It can be understood that, by leading the plurality of touch leads 105 out of the touch area 102 along the gap L between the electrode plates 101, not only can the influence of the touch lead 105 on the capacitance value of the electrode plate 101 be avoided, but also the blocking of the image displayed on the display side by the touch lead 105 can be avoided, further improving the reliability of the touch substrate 100.

[0262] In other embodiments, as shown in FIG. 1C, the touch substrate 100 further comprises an insulating layer 106. It can be understood that, as shown in FIG. 1C, the insulating layer 106 is arranged on the side of the electrode plate 101 away from the substrate 218. Figure 16 Figure 17

[0263] In some embodiments, the insulating layer 106 can be an insulating material such as transparent resin, so as to avoid the blocking of the image displayed on the display side by the insulating layer 106.

[0264] The insulating layer 106 is located between the plurality of electrode plates 101 and the plurality of touch leads 105, and a plurality of vias 107 are arranged on the insulating layer 106. It can be understood that the via 107 penetrates the insulating layer 106 in a direction perpendicular to the insulating layer 106. One touch lead 105 is electrically connected with one electrode plate 101 through at least one via 107. In this way, as shown in FIG. 1D and FIG. 1E, the touch lead 105 can be led out of the touch area 102 through the via 107. Figure 16 Figure 17

[0265] By arranging the insulating layer 106, the insulating layer 106 can play an electrical isolation role for the touch lead 105, not only can the influence of the touch lead 105 on the capacitance value of the electrode plate 101 be avoided, but also the blocking of the image displayed on the display side by the touch lead 105 can be avoided, further improving the reliability of the touch substrate 100.

[0266] In addition, by opening the via 107 on the insulating layer 106 to realize the electrical connection between the touch lead 105 and the electrode plate 101, the touch lead 105 can also avoid occupying the gap L between the adjacent two electrode plates 101, so as to further reduce the width of the gap L, providing the reliability of the touch substrate 100.

[0267] ​​​​​The above merely provides the specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any person skilled in the art can think of the changes or replacements within the technical range disclosed by the present disclosure, which should be covered in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A touch substrate, characterized in that: include: A plurality of electrode plates, wherein the plurality of electrode plates are located on a same virtual reference plane and are adjacent to each other; The smallest closed graphic area where the plurality of electrode plates are located as a whole is the touch area; The surface of each electrode plate facing away from the virtual reference surface is a sensing surface; The plurality of electrode plates include: a plurality of first electrode plates, each of the first electrode plates having a designated edge, the designated edge constituting a portion of a boundary of the touch area; at least one of the designated edges is arc-shaped; The area of ​​the sensing surface of each of the first electrode plates is in the range of 10 mm 2 ~35mm 2 ; The touch substrate is made of transparent material.

2. The touch substrate according to claim 1, wherein: The plurality of electrode plates further include: A plurality of second electrode plates are located on a side of the plurality of first electrode plates away from the boundary of the touch area; the area of ​​the sensing surface of each second electrode plate is in the range of 10 mm 2 ~40mm 2 .

3. The touch substrate according to claim 2, wherein: The ratio of the area of ​​the sensing surface of the first electrode plate to the area of ​​the sensing surface of the second electrode plate is in the range of 0.6 to 1.

5.

4. The touch substrate according to claim 3, wherein: The ratio of the area of ​​the sensing surface of the first electrode plate to the area of ​​the sensing surface of the second electrode plate is in the range of 0.95 to 1.

05.

5. The touch substrate according to any one of claims 2 to 4, characterized in that The orthographic projection shape of each of the second electrode plates on the virtual reference plane is a polygon.

6. The touch substrate according to claim 5, wherein: The plurality of first electrode plates include: a first special-shaped electrode plate, comprising a first arcuate side, a first side, and a second side, wherein the first arcuate side is the designated side of the first special-shaped electrode plate; the first side of the first special-shaped electrode plate is connected to one end of the first arcuate side, the second side of the first special-shaped electrode plate is connected to the other end of the first arcuate side, the first side of the first special-shaped electrode plate is away from one end of the first arcuate side and is connected to one end of the second side of the first special-shaped electrode plate away from the first arcuate side, and the first side of the first special-shaped electrode plate and the second side of the first special-shaped electrode plate are perpendicular to each other; a second special-shaped electrode plate, disposed adjacent to the first side of the first special-shaped electrode plate, with a first gap defined between the second special-shaped electrode plate and the first side of the first special-shaped electrode plate; Each of the second electrode plates is square in shape, and the plurality of second electrode plates include: a first square electrode plate, disposed adjacent to the second side of the first special-shaped electrode plate; The second square electrode plate is arranged adjacent to the first square electrode plate and the second special-shaped electrode plate; a second gap is defined between the second square electrode plate and the first square electrode plate, and the second gap and the first gap are located on the same straight line.

7. The touch substrate according to claim 6, wherein: The area of ​​the sensing surface of the first special-shaped electrode plate is smaller than the area of ​​the sensing surface of the second special-shaped electrode plate.

8. The touch substrate according to claim 6 or 7, characterized in that: The side length of each of the second electrode plates ranges from 3.17 mm to 6.32 mm.

9. The touch substrate according to claim 5, wherein: The plurality of first electrode plates include: a third special-shaped electrode plate, comprising a second arcuate side, a first side, and a second side, wherein the second arcuate side is the designated side of the third special-shaped electrode plate; the first side of the third special-shaped electrode plate is connected to one end of the second arcuate side, the second side of the third special-shaped electrode plate is connected to the other end of the second arcuate side, and an extension direction of the first side of the third special-shaped electrode plate is perpendicular to an extension direction of the second side of the third special-shaped electrode plate; a fourth special-shaped electrode plate, disposed adjacent to the first side of the third special-shaped electrode plate; The fifth special-shaped electrode plate is disposed adjacent to the second side of the third special-shaped electrode plate.

10. The touch substrate according to claim 9, wherein: The shape of each of the second electrode plates is square, and the side length of each of the second electrode plates ranges from 5 mm to 6 mm.

11. The touch substrate according to claim 9, wherein: The third special-shaped electrode plate further includes a third side and a fourth side, the third side of the third special-shaped electrode plate is connected to an end of the first side of the third special-shaped electrode plate away from the second arc-shaped side, and the fourth side of the third special-shaped electrode plate is connected to an end of the second side of the third special-shaped electrode plate away from the second arc-shaped side; the third side of the third special-shaped electrode plate is away from an end of the first side of the third special-shaped electrode plate and is connected to an end of the fourth side of the third special-shaped electrode plate away from the second side of the third special-shaped electrode plate, and the third side of the third special-shaped electrode plate is perpendicular to the fourth side of the third special-shaped electrode plate; The plurality of second electrode plates include: a first rectangular electrode plate, disposed adjacent to a third side of the third special-shaped electrode plate; a second rectangular electrode plate, disposed adjacent to the fourth side of the third special-shaped electrode plate; The third square electrode plate is disposed adjacent to the first rectangular electrode plate and the second rectangular electrode plate.

12. The touch substrate according to claim 11, wherein: The length of the third side of the third special-shaped electrode plate is the same as the length of the edge of the first rectangular electrode plate close to the third special-shaped electrode plate; the length of the fourth side of the third special-shaped electrode plate is the same as the length of the second rectangular electrode plate close to the third special-shaped electrode plate.

13. The touch substrate according to claim 11 or 12, characterized in that: The area of ​​the sensing surface of the third square electrode plate is smaller than that of the first rectangular electrode plate, and the area of ​​the sensing surface of the third square electrode plate is smaller than that of the second rectangular electrode plate.

14. The touch control substrate according to any one of claims 10 to 12, wherein: The area of ​​the sensing surface of at least one of the first electrode plates is the same as the area of ​​the sensing surface of at least one of the second electrode plates.

15. The touch substrate according to claim 5, wherein: The plurality of first electrode plates include: a sixth special-shaped electrode plate, comprising a third arcuate side, a first side, and a second side, wherein the third arcuate side is the designated side of the sixth special-shaped electrode plate; the first side of the sixth special-shaped electrode plate is connected to one end of the third arcuate side, the second side of the sixth special-shaped electrode plate is connected to the other end of the third arcuate side, and the first side of the sixth special-shaped electrode plate is parallel to the second side of the sixth special-shaped electrode plate; a seventh special-shaped electrode plate, disposed adjacent to the first side of the sixth special-shaped electrode plate; The eighth special-shaped electrode plate is disposed adjacent to the second side of the sixth special-shaped electrode plate.

16. The touch substrate according to claim 15, wherein: The shape of each of the second electrode plates is square, and the side length of each of the second electrode plates ranges from 4 mm to 4.2 mm.

17. The touch control substrate according to any one of claims 2 to 4, characterized in that: The first electrode plate is in the shape of a sector ring, and the second electrode plate is in the shape of a sector.

18. The touch substrate according to claim 1, wherein: The plurality of first electrode plates are all fan-shaped.

19. The touch substrate according to any one of claims 1 to 4, wherein: The touch substrate further includes: a plurality of touch leads, wherein one touch lead is electrically connected to one of the electrode plates; The plurality of touch leads are led out of the touch area along the gaps between the plurality of electrode plates; or, The touch substrate further includes: The insulating layer is located between the plurality of electrode plates and the plurality of touch leads; the insulating layer is provided with a plurality of via holes, and one of the touch leads is electrically connected to one of the electrode plates through at least one via hole.

20. A touch display device, characterized in that: include: Display panel; The touch substrate according to any one of claims 1 to 19, arranged on a display side of the display panel.

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