High-precision touch electrode applied to touch panel

Abstract

The invention discloses a high-precision touch electrode applied to a touchpad, belongs to the technical field of capacitive touchpads, and provides an electrode pattern applied to the touchpad to improve the mutual capacitance change rate between TX and RX after finger touch so as to improve the accuracy of the touchpad. By optimizing the electrode pattern design, the mutual capacitance change rate between TX and RX after finger touch is remarkably improved, the accuracy of the touch panel is improved, and many benefits are brought to a user. The higher mutual capacitance change rate means that the control IC can more accurately detect the position touched by the finger, so that more accurate touch positioning is realized. The higher mutual capacitance change rate enables the chip to detect the finger more easily, the detection time is shortened, and the finger touch coordinate detection speed is improved. A user can experience a more accurate and smooth operation feeling, a higher SNR is provided by a higher mutual capacitance change rate, and it is guaranteed that the touch panel can keep reliable performance in various environments.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitive touch panels, and in particular relates to a high-precision touch electrode applied to a touch panel. Background Art

[0002] Capacitive touchpads are widely used in electronic devices such as notebooks and tablets. Capacitive touchpads detect finger touches through capacitive sensing. The capacitive sensing part includes drive electrodes, sensing electrodes, control ICs and control circuits. When the user's finger approaches the touchpad, the capacitance will change. The control IC (touch chip) of the touchpad will detect the capacitance change and determine the position of the finger. The PCB board and the surface cover are bonded with glue. The cover can be made of glass or plastic film, and the finger can touch the cover. The touchpad sensor is an array composed of multiple drive electrodes (TX1~TXm) and multiple sensing electrodes (RX1~RXn) printed on a printed circuit board (PCB board). Depending on whether the drive electrode and the sensing electrode are on the same layer of the PCB board, it is divided into a single-layer electrode pattern and a double-layer electrode pattern. Single-layer electrode pattern, the drive electrode and the sensing electrode pattern are on the same layer. Double-layer electrode pattern, the drive electrode and the sensing electrode pattern are on different layers.

[0003] However, the touch pads currently on the market have a low mutual capacitance change rate and low touch accuracy.

[0004] Based on this, the present invention provides a single-layer electrode pattern and a double-layer electrode pattern applied to a touch panel, which improves the mutual capacitance change rate of touch and has better touch accuracy and touch performance. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision touch electrode applied to a touch panel in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the present invention is as follows: a high-precision touch electrode applied to a touch panel, the electrode comprising: a single-layer electrode pattern and a double-layer electrode pattern,

[0007] The single-layer electrode pattern comprises: a plurality of repeated single-layer electrode pattern units;

[0008] The single-layer electrode pattern unit comprises a sensing electrode pattern unit and a driving electrode pattern unit, wherein the driving pattern electrode unit and the sensing pattern electrode unit are coupled to each other to form a mutual capacitance sensing node;

[0009] The driving electrode pattern unit is divided into two symmetrical parts due to the presence of the sensing electrode pattern unit, and the two parts are connected together on the second layer of the PCB board through vias that penetrate the two layers;

[0010] The sensing electrode comprises a plurality of identical sensing electrode pattern units, the plurality of sensing electrode pattern units are regularly arranged in the same direction, and any two adjacent sensing electrode pattern units in the row direction or in the column direction are connected together; the driving electrode comprises a plurality of identical driving electrode pattern units, the plurality of driving electrode pattern units are regularly arranged in a direction perpendicular to the sensing electrode, and any two adjacent driving electrode pattern units in the row direction or in the column direction are connected together;

[0011] The sensing electrode is connected to the sensing electrode pin of the control IC through a via hole penetrating the two layers on the second layer of the PCB board;

[0012] The driving electrode is connected to the driving electrode pin of the control IC through a via hole penetrating the two layers on the second layer of the PCB board.

[0013] The double-layer electrode pattern comprises: a plurality of repeated double-layer electrode pattern units;

[0014] The double-layer electrode pattern unit includes a sensing electrode pattern unit, a suspension pattern unit and a driving electrode pattern unit; the driving electrode pattern unit and the sensing electrode pattern unit are coupled to each other to form a mutual capacitance sensing node, wherein the optional suspension pattern unit enhances the coupling between the driving electrode unit and the sensing electrode unit, and can also be used in practice. Cancel Suspended pattern;

[0015] The suspension pattern unit is arranged on the first layer of the PCB board. When the sensing electrode pattern unit is arranged on the first layer of the PCB board and the driving electrode pattern unit is arranged on the second layer, the suspension pattern unit and the driving electrode pattern unit overlap in the Z-axis direction; when the driving electrode pattern unit is arranged on the first layer of the PCB board and the sensing electrode pattern unit is arranged on the second layer, the suspension pattern unit and the sensing electrode pattern unit overlap in the Z-axis direction;

[0016] The suspension pattern units are independent of each other, have no electrical connection, and have no electrical connection with the control circuit and the control IC;

[0017] The sensing electrode comprises a plurality of identical sensing electrode pattern units, the plurality of sensing electrode pattern units are regularly arranged in the same direction, and any two adjacent sensing electrode pattern units in the row direction or in the column direction are connected together; the driving electrode comprises a plurality of identical driving electrode pattern units, the plurality of driving electrode pattern units are regularly arranged in a direction perpendicular to the sensing electrode, and any two adjacent driving electrode pattern units in the row direction or in the column direction are connected together;

[0018] The sensing electrode is connected to the sensing electrode pin of the control IC through a via hole penetrating all layers on another layer (the fourth layer) of the PCB board;

[0019] The driving electrodes are connected to the driving electrode pins of the control IC through vias penetrating all layers and routed on another layer (the fourth layer) of the PCB board.

[0020] In a preferred embodiment, the single-layer electrode pattern is arranged on the first layer of the PCB board.

[0021] In a preferred embodiment, the driving electrode pattern and the sensing electrode pattern of the double-layer electrode pattern are respectively on two parallel surfaces of the PCB board that are not coplanar. When the sensing electrode pattern is on the first layer, the driving electrode pattern is on the second layer. When the sensing electrode is on the second layer, the driving electrode pattern is on the first layer. The suspension pattern is set on the first layer. The control IC is on the surface of the fourth layer. The double-layer pattern is suitable for a PCB board with four layers.

[0022] In a preferred embodiment, the single-layer electrode pattern is a regular rectangle, circle, or square, and may also be an irregular shape, such as a polygon, a curve, or the like.

[0023] In a preferred embodiment, the electrode pattern size of the single-layer electrode pattern can be adjusted according to the size and resolution of the touch panel to meet different design requirements.

[0024] In a preferred embodiment, in the double-layer electrode pattern, when the sensing electrode is in the first layer and the driving electrode is in the second layer, the suspension pattern unit and the driving electrode pattern unit overlap or partially overlap each other in the Z-axis direction to form a more complex coupling structure; when the driving electrode is in the first layer and the sensing electrode is in the second layer, the suspension pattern unit and the sensing electrode pattern unit overlap or partially overlap each other in the Z-axis direction to form a more complex coupling structure. ；

[0025] The sensing electrode pattern, driving electrode pattern and suspension pattern of the double-layer electrode pattern are regular rectangles, circles, One of square, polygon or curve .

[0026] In a preferred embodiment, the sizes of the sensing electrode pattern, the suspension pattern and the driving electrode pattern of the double-layer electrode pattern can be adjusted according to the size and resolution of the touch panel to meet different design requirements.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. In the present invention, an electrode pattern applied to a touch panel is provided to improve the mutual capacitance change rate between TX and RX after a finger touches, thereby improving the accuracy of the touch panel. The present invention achieves a significant improvement in the mutual capacitance change rate between TX and RX after a finger touches by optimizing the electrode pattern design, thereby improving the accuracy of the touch panel and bringing many benefits to users. A higher mutual capacitance change rate means that the control IC can detect the position of the finger touch more accurately, thereby achieving more accurate touch positioning. This is particularly important for application scenarios that require fine operations, such as drawing, design, and games. A higher mutual capacitance change rate also makes it easier for the chip to detect fingers, shortens the detection time, increases the speed of detecting the finger touch coordinates, and achieves more timely operation feedback, which is crucial for application scenarios that require fast operations, such as games and music production. Users can experience a smoother and more accurate operation experience. A high mutual capacitance change rate can also effectively improve the system SNR and reduce the impact of environmental factors on touch detection, such as electromagnetic interference, temperature changes, etc., thereby improving the stability of touch performance. This ensures that the touch panel can maintain reliable performance in various environments, such as outdoor equipment, industrial equipment, etc., and users can enjoy a smooth touch experience anytime, anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional view of a touch panel having a single-layer electrode pattern in the present invention;

[0030] Figure 2 This is a 3X3 single-layer pattern electrode array diagram in the present invention;

[0031] Figure 3 This is a unit diagram of a single-layer electrode pattern in the present invention;

[0032] Figure 4 is a cross-sectional view of a touch panel having a double-layer electrode pattern in the present invention;

[0033] Figure 5 This is a 3X3 double-layer electrode pattern array diagram in the present invention;

[0034] Figure 6 This is a unit diagram of a double-layer electrode pattern in the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Reference Figure 1-6 ,

[0037] A high-precision touch electrode for a touch panel, the electrode comprising: a single-layer electrode pattern and a double-layer electrode pattern,

[0038] The single-layer electrode pattern includes a plurality of repeated single-layer electrode pattern units;

[0039] The single-layer electrode pattern unit includes a sensing electrode pattern unit and a driving electrode pattern unit, wherein the driving electrode pattern unit and the sensing electrode pattern unit are coupled to each other to form a mutual capacitance sensing node;

[0040] The single-layer electrode pattern is one of regular rectangles, circles, and squares, and can also be irregular shapes such as polygons, curves, and the like.

[0041] The electrode pattern size of the single-layer electrode pattern can be adjusted according to the size and resolution of the touch panel to meet different design requirements.

[0042] like Figure 1 As shown, the single-layer electrode pattern is on the first layer of the PCB board, and the control IC is on the surface of the second layer;

[0043] Figure 2 It is a 3X3 single-layer electrode pattern array, consisting of 3 driving electrodes (rows) and 3 sensing electrodes (columns). The left picture shows the driving electrode pattern and sensing electrode pattern of the first layer. The black traces are driving electrodes and the gray traces are sensing electrodes.

[0044] The driving electrode pattern units in the same row are directly connected; one driving electrode pattern unit will be divided into two symmetrical parts due to the existence of the sensing pattern electrode unit, and the two parts are connected together on the second layer of the PCB board through vias that penetrate the two layers. Figure 2 The middle right image shows the second layer traces connecting these two parts;

[0045] The driving electrodes of each row are routed on the second layer of the PCB through vias and connected to the driving electrode pins of the control IC in sequence. For example, driving electrode 1 is connected to driving electrode 1 pin of the IC, and driving electrode 2 is connected to driving electrode 2 pin of the IC.

[0046] The sensing electrode pattern units in the same column are directly connected.

[0047] There will be a via on each column of sensing electrodes. The sensing electrodes will be routed on the second layer of the PCB through the via and connected to the sensing electrode pins of the control IC in sequence. For example, the sensing electrode 1 electrode is connected to the sensing electrode 1 pin of the IC, and the sensing electrode 2 electrode is connected to the sensing electrode 2 pin of the IC.

[0048] like Figure 3 As shown in the left figure, it is a single-layer electrode pattern unit, including a driving electrode pattern unit and a sensing electrode pattern unit;

[0049] A driving electrode pattern unit is divided into two symmetrical parts due to the existence of the sensing electrode pattern unit. The two parts are connected together on the second layer of the PCB board through vias that penetrate the two layers. Figure 3 The middle image shows the second layer traces connecting the two parts; there are no restrictions on the location of the vias. Figure 3 The right figure in the figure shows a schematic diagram of an electrode pattern unit with another via position.

[0050] The double-layer electrode pattern includes a plurality of repeated double-layer electrode pattern units;

[0051] A double-layer electrode pattern unit includes a sensing electrode pattern unit, a suspension pattern unit and a driving electrode pattern unit; the driving electrode pattern unit and the sensing electrode pattern unit are coupled to each other to form a mutual capacitance sensing node, wherein the optional suspension pattern unit enhances the coupling between the driving electrode unit and the sensing electrode unit, and the suspension pattern can also be cancelled in practical applications;

[0052] The suspension pattern unit is arranged on the first layer of the PCB board. When the sensing electrode pattern unit is arranged on the first layer of the PCB board and the driving electrode pattern unit is arranged on the second layer, the suspension pattern unit and the driving electrode pattern unit overlap in the Z-axis direction; when the driving electrode pattern unit is arranged on the first layer of the PCB board and the sensing electrode pattern unit is arranged on the second layer, the suspension pattern unit and the sensing electrode pattern unit overlap in the Z-axis direction;

[0053] The suspension pattern units are independent of each other, have no electrical connection, and have no electrical connection with the control circuit and the control IC;

[0054] The sensing electrode comprises a plurality of identical sensing electrode pattern units, the plurality of sensing electrode pattern units are regularly arranged in the same direction, and any two adjacent sensing electrode pattern units in the row direction or in the column direction are connected together; the driving electrode comprises a plurality of identical driving electrode pattern units, the plurality of driving electrode pattern units are regularly arranged in a direction perpendicular to the sensing electrode, and any two adjacent driving electrode pattern units in the row direction or in the column direction are connected together;

[0055] The sensing electrode is connected to the sensing electrode pin of the control IC through a via hole penetrating all layers on another layer (the fourth layer) of the PCB board;

[0056] The driving electrode is connected to the driving electrode pin of the control IC through a via hole penetrating all layers on another layer (the fourth layer) of the PCB board; the sensing electrode pattern of the double-layer electrode pattern can be a regular rectangle, circle, square, etc., or an irregular shape, such as a polygon, curve, etc.

[0057] The driving electrode pattern of the double-layer electrode pattern may be a regular rectangle, circle, square, etc., or an irregular shape such as a polygon, curve, etc.

[0058] In the double-layer electrode pattern, when the sensing electrodes are in the first layer and the driving electrodes are in the second layer, the suspension pattern unit and the driving electrode pattern unit overlap or partially overlap with each other in the Z-axis direction, forming a more complex coupling structure; when the driving electrodes are in the first layer and the sensing electrodes are in the second layer, the suspension pattern unit and the sensing electrode pattern unit overlap or partially overlap with each other in the Z-axis direction, forming a more complex coupling structure.

[0059] The suspended pattern can be a regular rectangle, circle, square, etc., or an irregular shape such as a polygon, curve, etc.

[0060] The sizes of the sensing electrode pattern, the driving electrode pattern and the suspension pattern of the double-layer electrode pattern can be adjusted according to the size and resolution of the touch panel to meet different design requirements.

[0061] like Figure 4 As shown, the driving electrode pattern and the sensing electrode pattern of the double-layer pattern are respectively on two parallel surfaces of the PCB board that are not coplanar. When the sensing electrode pattern is on the first layer, the driving electrode pattern is on the second layer. When the sensing electrode is on the second layer, the driving electrode pattern is on the first layer. The suspension pattern is set on the first layer. The control IC is on the surface of the fourth layer. The double-layer pattern is suitable for a PCB with four layers.

[0062] When the sensing electrodes are arranged on the first layer and the driving electrodes are arranged on the second layer, as follows Figure 5 shown. Figure 5 It is a 3X3 electrode pattern array. A coupling capacitor is formed between the driving electrode and the sensing electrode pattern, and the suspension pattern enhances the coupling between the two.

[0063] like Figure 5 As shown, the left picture is the first layer of the PCB, which includes the sensing electrode pattern and the suspension pattern. The dark part is the sensing electrode pattern. The sensing electrode will be connected to the control IC through vias on another layer. For example, the sensing electrode 1 electrode is connected to the driving electrode 1 pin of the IC, and the sensing electrode 2 electrode is connected to the sensing electrode 2 pin of the IC. The sensing electrode pattern units in the same column are directly connected.

[0064] The light-colored part is a suspended pattern, which is a plurality of repeated independent pattern units. There is no electrical connection between each suspended pattern unit, and there is no electrical connection with the control circuit and control IC on the PCB board.

[0065] The middle picture shows the driving electrode pattern of the second layer, and the driving electrode pattern units in the same row are directly connected.

[0066] Each row of driving electrodes will be connected to the driving electrode pins of the control IC in turn through vias on the fourth layer of the PCB board. For example, drive electrode 1 is connected to drive electrode 1 pin of the IC, and drive electrode 2 is connected to drive electrode 2 pin of the IC. The right picture shows the first layer pattern and the second layer pattern together. The dark pattern is the driving electrode pattern of the second layer, and the light pattern is the sensing electrode pattern of the first layer. Figure 5 As can be seen from the three figures, the driving electrode pattern of the second layer overlaps with the suspension pattern of the first layer in the Z-axis direction.

[0067] When the sensing electrode pattern unit is in the first layer and the driving electrode pattern unit is in the second layer, the double-layer electrode pattern unit is as follows: Figure 6 As shown, the left picture shows the sensing electrode pattern unit (dark color) and the suspension pattern unit (light color) of the first layer; the middle picture shows the driving electrode pattern unit of the second layer; the right picture shows the first layer and the second layer together, the dark color is the driving electrode pattern unit of the second layer, and the light color is the sensing electrode pattern unit of the first layer. Figure 6 From the three figures in the figure, we can see that the suspension pattern units of the first layer overlap with the driving electrode pattern units of the second layer in the Z-axis direction. From the above, we can know that:

[0068] In the present invention, an electrode pattern applied to a touch panel is provided to improve the mutual capacitance change rate between TX and RX after a finger touches, thereby improving the accuracy of the touch panel. The present invention achieves a significant improvement in the mutual capacitance change rate between TX and RX after a finger touches by optimizing the electrode pattern design, thereby improving the accuracy of the touch panel and bringing many benefits to users. A higher mutual capacitance change rate means that the control IC can detect the position of the finger touch more accurately, thereby achieving more accurate touch positioning. This is particularly important for application scenarios that require fine operations, such as drawing, design, games, etc. A higher mutual capacitance change rate also makes it easier for the chip to detect fingers, shorten the detection time, increase the finger touch coordinate detection speed, and achieve more timely operation feedback, which is crucial for application scenarios that require fast operations, such as games, music production, etc. Users can experience a smoother and more accurate operation experience. A high mutual capacitance change rate can also effectively reduce the impact of environmental factors on touch detection, such as electromagnetic interference, temperature changes, etc., thereby improving the stability of touch performance. This ensures that the touch panel can maintain reliable performance in various environments, such as outdoor equipment, industrial equipment, etc., and users can enjoy a smooth touch experience anytime, anywhere.

[0069] In addition, improving touch accuracy and performance also expands the application scope of touch panels, making them suitable for more scenarios that require high-precision touch operations, such as medical equipment, educational equipment, automotive electronics, etc. Users can experience the convenience and efficiency of touch operations in more fields.

[0070] More importantly, high mutual capacitance change rate can also reduce the power consumption of the control IC and extend the battery life of the device, which is especially important for mobile devices such as smartphones and tablets. Users can use the device for a longer time without frequent charging, which improves the user experience.

[0071] In summary, the present invention significantly improves the accuracy of the touch panel by increasing the mutual capacitance change rate between TX and RX after finger touch, bringing many benefits such as precise positioning, sensitive response, stable performance, wide application, low power consumption and high-quality experience, providing users with a more comfortable and convenient touch operation experience, and promoting the development of touch technology towards higher precision and higher performance.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0073] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-precision touch electrode for a touch panel, characterized in that: The electrodes include: a single-layer electrode pattern and a double-layer electrode pattern, The single-layer electrode pattern is arranged on the first layer of the PCB board, and is an array including a plurality of sensing electrodes and a plurality of driving electrodes, and is composed of a plurality of repeated single-layer electrode pattern units; The single-layer electrode pattern unit comprises a sensing electrode pattern unit and a driving electrode pattern unit, wherein the driving pattern electrode unit and the sensing pattern electrode unit are coupled to each other to form a mutual capacitance sensing node; The driving electrode pattern unit is divided into two symmetrical parts due to the presence of the sensing electrode pattern unit, and the two parts are connected together on the second layer of the PCB board through vias that penetrate the two layers; The sensing electrode comprises a plurality of identical sensing electrode pattern units, the plurality of sensing electrode pattern units are regularly arranged in the same direction, and any two adjacent sensing electrode pattern units in the row direction or in the column direction are connected together; the driving electrode comprises a plurality of identical driving electrode pattern units, the plurality of driving electrode pattern units are regularly arranged in a direction perpendicular to the sensing electrode, and any two adjacent driving electrode pattern units in the row direction or in the column direction are connected together; The sensing electrode is connected to the sensing electrode pin of the control IC through a via hole penetrating the two layers on the second layer of the PCB board; The driving electrode, through Through two layers The vias are connected to the drive electrode pins of the control IC on the second layer of the PCB; The double-layer electrode pattern is an array including a plurality of sensing electrodes and driving electrodes, and is composed of a plurality of repeated double-layer electrode pattern units; The double-layer electrode pattern unit includes a sensing electrode pattern unit, a suspension pattern unit and a driving electrode pattern unit; the driving electrode pattern unit and the sensing electrode pattern unit are coupled to each other to form a mutual capacitance sensing node, wherein the optional suspension pattern unit enhances the coupling between the driving electrode unit and the sensing electrode unit, and the suspension pattern can also be cancelled in practical applications; the suspension pattern unit is arranged on the first layer of the PCB board, when the sensing electrode pattern unit is arranged on the first layer of the PCB board and the driving electrode pattern unit is arranged on the second layer, the suspension pattern unit and the driving electrode pattern unit overlap in the Z-axis direction; when the driving electrode pattern unit is arranged on the first layer of the PCB board and the sensing electrode pattern unit is arranged on the second layer, the suspension pattern unit and the sensing electrode pattern unit overlap in the Z-axis direction; The suspension pattern units are independent of each other, have no electrical connection, and have no electrical connection with the control circuit and the control IC; The sensing electrode comprises a plurality of identical sensing electrode pattern units, the plurality of sensing electrode pattern units are regularly arranged in the same direction, and any two adjacent sensing electrode pattern units in the row direction or in the column direction are connected together; the driving electrode comprises a plurality of identical driving electrode pattern units, the plurality of driving electrode pattern units are regularly arranged in a direction perpendicular to the sensing electrode, and any two adjacent driving electrode pattern units in the row direction or in the column direction are connected together; The sensing electrode is connected to the sensing electrode pin of the control IC through a via hole penetrating all layers on the fourth layer of the PCB board; The driving electrode is connected to the driving electrode pin of the control IC through a via hole penetrating all layers and routed on the fourth layer of the PCB board.

2. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The single-layer electrode pattern is on the first layer of the PCB board, and the control IC is on the surface of the second layer.

3. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The driving electrode pattern and the sensing electrode pattern of the double-layer electrode pattern are respectively on two parallel surfaces of the PCB board that are not coplanar. When the sensing electrode pattern is on the first layer, the driving electrode pattern is on the second layer. When the sensing electrode pattern is on the second layer, the driving electrode pattern is on the first layer. The suspension pattern is arranged on the first layer. The control IC is on the surface of the fourth layer. The double-layer pattern is suitable for a PCB with four layers.

4. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The single-layer electrode pattern and the double-layer electrode pattern are conductive wires printed on the PCB board, have conductive properties, and are made of metal materials.

5. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The single-layer electrode pattern is one of a regular rectangle, circle, square, polygon or curve.

6. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The suspension pattern units in the double-layer electrode pattern are arranged in the first layer, and overlap or partially overlap with the driving electrode pattern units or the sensing electrode pattern units in the second layer in the Z-axis direction.

7. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The sensing electrode pattern, the driving electrode pattern and the suspension pattern of the double-layer electrode pattern are one of regular rectangles, circles, squares, polygons or curves.

8. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The size of the single-layer electrode pattern is adjusted according to the size and resolution of the touch panel.

9. The high-precision touch electrode for a touch panel according to claim 1, characterized in that: The size of the double-layer electrode pattern is adjusted according to the size and resolution of the touch panel.

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