Touch panel and electromagnetic capacitance touch device

Abstract

The invention relates to a touch panel and an electromagnetic capacitive touch device. The touch panel comprises a first touch electrode layer and a second touch electrode layer. The first touch electrode layer comprises a plurality of first grid channels formed by arranging a plurality of first grid lines in a crossed mode. The first grid channel comprises two sub-grid channels arranged adjacently and a first gap. The two sub-grid channels are arranged in a spaced mode through the first gap, and the ends, on the same side, of the two sub-grid channels are electrically connected and matched. The second touch electrode layer and the first touch electrode layer are stacked in an insulating manner. The second touch electrode layer comprises a plurality of second grid channels formed by arranging a plurality of second grid lines in a crossed mode. And the space projection of the first grid line in the thickness direction covers the second grid line. The arrangement density of the first grid lines is greater than that of the second grid lines. The touch panel can have the electromagnetic touch function and the capacitive touch function, and the touch performance and the appearance performance of the touch panel can be improved.

Description

Technical Field

[0001] This application relates to the field of touch technology, and in particular to touch panels and electromagnetic capacitive touch devices. Background Technology

[0002] Touch technology basically includes capacitive touch and electromagnetic touch. Specifically, capacitive touch uses the change in capacitance value due to the human body's electrical current to locate the touch point. Capacitive touch can be triggered by any conductive object, such as a finger or a stylus. Electromagnetic touch, on the other hand, emits electromagnetic signals, which are received by a sensor and the position is calculated. Electromagnetic touch can be triggered by emitting electromagnetic signals through a conductive material, such as an electromagnetic pen.

[0003] Currently, products with touch technology are still designed separately from those with capacitive touch and those with electromagnetic touch. That is, products with capacitive touch cannot be directly electromagnetically touched, and products with electromagnetic touch cannot be directly capacitively touched, which is not conducive to enriching the functions of touch panels. Summary of the Invention

[0004] Therefore, it is necessary to provide a touch panel and an electromagnetic capacitive touch device to address the issue of how to enrich the functionality of touch panels.

[0005] A touch panel, the touch panel comprising:

[0006] The first touch electrode layer includes a plurality of first grid channels formed by the intersection of multiple first grid lines; each first grid channel includes two adjacent sub-grid channels and a first gap; the two sub-grid channels are spaced apart by the first gap, and one end of the two sub-grid channels on the same side is electrically connected to each other.

[0007] A second touch electrode layer is provided, with an insulating layer stacked between the second touch electrode layer and the first touch electrode layer; the second touch electrode layer includes a plurality of second grid channels formed by the intersection of multiple second grid lines;

[0008] Wherein, the spatial projection of the first grid line in its thickness direction covers the second grid line; the arrangement density of the first grid line is greater than the arrangement density of the second grid line.

[0009] In one embodiment, the density of the first grid lines is twice that of the density of the second grid lines.

[0010] In one embodiment, the line width of the first grid line is greater than the line width of the second grid line, and the second grid line is within the orthogonal projection region of the first grid line along the thickness direction.

[0011] In one embodiment, the line width difference between the first grid line and the second grid line is P1, where P1 = 1µm to 8µm.

[0012] In one embodiment, the first gap is a virtual routing area, which connects two adjacent sub-grid channels; a break is provided on the first grid line of the virtual routing area.

[0013] In one embodiment, the first touch electrode layer is provided with a first lead; one end of the two sub-mesh channels on the same side is electrically connected and engaged via the first lead;

[0014] Alternatively, the first touch electrode layer may have a grid connection area; one end of the two sub-grid channels on the same side may be electrically connected and engaged through the grid connection area.

[0015] In one embodiment, the first touch electrode layer is provided with a plurality of second leads; the sub-mesh channel is provided with a first end and a second end opposite to each other along its own length direction; the first ends of the two sub-mesh channels on the same side are electrically connected and engaged; the second end is electrically connected to the touch connection area of ​​the touch panel through the second leads;

[0016] And / or, the second touch electrode layer is provided with a plurality of third leads; the two ends of the second mesh channel are respectively connected to the touch connection area of ​​the touch panel through the third leads.

[0017] In one embodiment, the channel width of the first grid channel is D1, where D1 = 2mm to 8mm;

[0018] And / or, the channel width of the second grid channel is D2, where D2 = 2mm~8mm.

[0019] In one embodiment, the included angle between the intersection of the first grid lines and the included angle between the intersection of the second grid lines is α, where α = 30°~150°.

[0020] An electromagnetic capacitive touch device includes a processing component and a touch panel as described in any of the above embodiments. The processing component is electrically connected to a first grid channel of a first touch electrode layer and a second grid channel of a second touch electrode layer, respectively. The first grid channel and the second grid channel are shared channels for electromagnetic touch and capacitive touch.

[0021] The aforementioned touch panel and electromagnetic capacitive touch device, through the integrated design of the first and second touch electrode layers, integrate a channel shared by both electromagnetic and capacitive touch functions, allowing users to choose different touch methods according to different needs. For example, users can use their fingers for general browsing and operation, while also using an electromagnetic pen for precise drawing or writing, greatly improving the practicality and flexibility of the touch panel. Furthermore, unlike capacitive and electromagnetic touch channels which are arranged on the same layer and spaced apart, the integrated design of the first and second touch electrode layers helps reduce the number of channels and leads, effectively mitigating the limitations of electrode layout within the touch panel and minimizing the impact on touch performance. This results in superior electromagnetic capacitive touch performance and reduces the impact on touch panel size, allowing for narrower bezel widths.

[0022] Furthermore, in the channel shared by both electromagnetic and capacitive touch functions, a loop is formed in the first grid channel of the first touch electrode layer through two sub-grid channels electrically connected at one end. Similarly, a loop is formed in the second grid channel of the second touch electrode layer through leads at both ends. The loops of the first and second touch electrode layers overlap, thus enabling the sharing of capacitive and electromagnetic touch functions. Increasing the density of the first grid lines in the first grid channel, and ensuring that the spatial projection of the first grid lines in their thickness direction covers the second grid lines, reduces signal loss and interference during transmission, i.e., reduces resistance, thereby improving signal strength and stability. This contributes to improving the accuracy and reliability of both electromagnetic and capacitive touch. Simultaneously, the impedance requirements of both electromagnetic and capacitive touch can be met without increasing the width of the grid channel, especially within the capacitive touch channel width. Furthermore, increasing the density and overlapping grid lines does not affect the overall appearance. In addition, the linewidth of the first grid line is increased, that is, the linewidth of the first grid line is greater than that of the second grid line, thereby further reducing the impedance of the first grid channel. At the same time, the difficulty of the first grid line covering the second grid line in its thickness direction is reduced in the manufacturing process, thus ensuring production yield. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an electromagnetic capacitive touch device in one embodiment.

[0024] Figure 2 for Figure 1 A schematic diagram of the cooperative structure of the first grid channel and the second grid channel in the electromagnetic capacitive touch device.

[0025] Figure 3 This is a schematic diagram of the structure of an electromagnetic capacitive touch device in one embodiment, in which the first grid channel and the second grid channel are arranged in an overlapping manner.

[0026] Figure 4 for Figure 3 The diagram shows a perspective view of the overlapping arrangement of the first and second grid channels in the electromagnetic capacitive touch device.

[0027] Figure 5 This is a schematic diagram of the electromagnetic capacitive touch device in another embodiment.

[0028] Figure 6 This is a schematic diagram of the cooperative structure of the first grid channel and the second grid channel in an electromagnetic capacitive touch device shown in one embodiment.

[0029] Figure 7 This is a schematic diagram of the grid structure in an electromagnetic capacitive touch device shown in one embodiment.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Electromagnetic capacitive touch device; 100. Touch panel; 100a. First connecting edge; 100b. Second connecting edge; 100c. Third connecting edge; 100d. Fourth connecting edge; 110. First touch electrode layer; 110a. First grid line; 111. First grid channel; 1111. Sub-grid channel; 1112. First gap; 1113. First lead; 1114. Grid connection area; 1115. Second lead; 112. Second gap; 120. Second touch electrode layer; 120a. Second grid line; 121. Second grid channel; 122. Third lead; 123. Third gap; 200. Processing component; X. Thickness direction; Y1. First direction; Y2. Second direction; Z1. Third direction; Z2. Fourth direction. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 As shown, this application provides an electromagnetic capacitive touch device 10, including a touch panel 100 and a processing component 200. Specifically, the touch panel 100 includes a first touch electrode layer 110 and a second touch electrode layer 120. The processing component 200 is electrically connected to a first mesh channel 111 of the first touch electrode layer 110 and a second mesh channel 121 of the second touch electrode layer 120, respectively. The first mesh channel 111 and the second mesh channel 121 are shared channels for both electromagnetic and capacitive touch.

[0034] Among them, combined Figure 2 and Figure 3 As shown, the first touch electrode layer 110 includes a plurality of first grid channels 111 formed by the intersection of multiple first grid lines 110a. Each first grid channel 111 includes two adjacent sub-grid channels 1111 and a first gap 1112. The two sub-grid channels 1111 are partially spaced apart by the first gap 1112, and one end of the two sub-grid channels 1111 on the same side is electrically connected to each other.

[0035] The second touch electrode layer 120 is insulated from and stacked with the first touch electrode layer 110. The second touch electrode layer 120 includes a plurality of second grid channels 121 formed by the intersection of multiple second grid lines 120a.

[0036] The spatial projection of the first grid line 110a in its thickness direction X covers the second grid line 120a. The density of the first grid line 110a is greater than the density of the second grid line 120a. Specifically, the density refers to the number of grid lines per unit length or single-sided area. The density is determined by the spacing between adjacent grid lines, can be measured by the size of the smallest grid, or by the number of grid lines per unit area or unit length. For example, a higher density results in smaller grid line spacing, smaller grid size, and more grid lines per unit area.

[0037] For ease of understanding, the following explanation will be given in conjunction with the driving of the second touch electrode layer 120 and the first touch electrode layer 110 by the processing component 200.

[0038] In one implementation scenario, when the touch panel 100 performs electromagnetic induction touch function, the processing component 200 senses and receives electromagnetic signals emitted by an electromagnetic component (such as an electromagnetic pen) through the first grid channel 111 of the first touch electrode layer 110 and the second grid channel 121 of the second touch electrode layer 120. By calculating and analyzing the intensity and distribution of the electromagnetic signals, the processing component 200 can determine the touch position, pressure, tilt angle, and even button status, thereby achieving high-precision electromagnetic touch function. The electromagnetic pen is divided into an active pen and a passive pen. The active pen is powered by a built-in battery and emits electromagnetic signals, while the passive pen is powered by an external excitation signal and emits electromagnetic signals. The external excitation signal power supply can be achieved by setting a corresponding excitation antenna for the passive pen inside or outside the touch panel. The processing component 200 controls the excitation antenna to emit an excitation signal that can power the passive pen, thereby driving the electromagnetic pen to emit electromagnetic signals.

[0039] In another implementation scenario, when the touch panel 100 performs capacitive touch functionality, the processing component 200 detects capacitance changes at each location by sending capacitive drive signals to the grid channels of one of the first touch electrode layers 110 and the second touch electrode layer 120, and receiving sensing signals to the grid channels of the other layer, thereby identifying the touch location. The grid channels within the first touch electrode layer 110 and the second touch electrode layer 120 are typically divided into drive lines (Tx) and sensing lines (Rx), forming intersecting capacitive sensing units. When a finger touches the screen, it capacitively couples with a nearby sensing unit, changing the capacitance value of that unit. The processing component 200 scans all sensing units to precisely detect the minute changes in capacitance of each unit. By analyzing the distribution and intensity of these changes, the coordinates of the touch point are calculated, thus realizing the capacitive touch function.

[0040] The electromagnetic induction touch function and capacitive touch function of the aforementioned touch panel 100 can be driven in a time-sharing manner. Specifically, the touch panel 100 can achieve functional scenario use by driving the electromagnetic induction touch function and the capacitive touch function separately. Furthermore, the touch panel 100 can drive the electromagnetic induction touch function and the capacitive touch function simultaneously in a time-sharing manner. For example, within a touch driving cycle, the electromagnetic induction touch function is driven first, followed by the capacitive touch function, and so on, allowing both functions to be used simultaneously.

[0041] Based on this, in this embodiment, through the integrated design of the first touch electrode layer 110 and the second touch electrode layer 120, the touch panel 100 integrates a channel shared by both electromagnetic touch and capacitive touch functions, allowing users to choose different touch methods according to different needs. For example, users can use their fingers for ordinary browsing and operation, while also using an electromagnetic pen for precise drawing or writing, greatly improving the practicality and flexibility of the touch panel 100. Furthermore, unlike capacitive touch and electromagnetic touch channels which are arranged on the same layer and spaced apart, the integrated design of the first touch electrode layer 110 and the second touch electrode layer 120 helps reduce the number of channels and leads, effectively reducing the limitations of electrode layout within the touch panel 100, thereby minimizing the impact on touch performance and achieving superior electromagnetic capacitive touch performance. Simultaneously, it reduces the impact on the size of the touch panel 100, facilitating a narrower bezel width.

[0042] Furthermore, in the channel shared by both electromagnetic and capacitive touch functions, the first grid channel 111 of the first touch electrode layer 110 forms a loop through two sub-grid channels 1111 electrically connected at one end, and the second grid channel 121 of the second touch electrode layer 120 forms a loop through leads at both ends. The loops of the first touch electrode layer 110 and the second touch electrode layer 120 overlap and intersect, thereby enabling the sharing of capacitive and electromagnetic touch functions. Increasing the density of the first grid lines 110a in the first grid channel 111, and ensuring that the spatial projection of the first grid lines 110a in its thickness direction X covers the second grid lines, can reduce signal loss and interference during transmission, i.e., reduce resistance, thereby improving signal strength and stability, and contributing to improved accuracy and reliability of both electromagnetic and capacitive touch. Simultaneously, without increasing the width of the grid channel, especially within the width of the second grid channel 121 for capacitive touch, the impedance requirements of both electromagnetic and capacitive touch can be met. Furthermore, increasing the density and overlapping the grid lines does not affect the overall appearance.

[0043] It should be noted that the grid formed by the intersection of the first grid line 110a and the grid formed by the intersection of the second grid line 120a can be any of the following: regular polygon, square, rectangle or rhombus, etc., without too many restrictions.

[0044] In another embodiment, see back Figure 2 The first gap 1112 can be straight, curved, such as sawtooth or wavy, etc., and the embodiments disclosed herein do not limit this.

[0045] In some embodiments, the density of the first grid lines 110a is twice that of the second grid lines 120a. This denser arrangement of the first grid lines 110a helps reduce the overall impedance of the first grid channel 111, thereby improving the ability to receive electromagnetic signals and making the signal easier to distinguish from environmental noise, thus improving the signal-to-noise ratio and touch reliability. Simultaneously, the density of the first grid lines 110a is not excessively dense, reducing the shielding effect of the first touch electrode layer 110 on the electric field coupling of the second touch electrode layer 120, ensuring the stability of changing signals on the second touch electrode layer 120.

[0046] In some embodiments, such as Figure 4As shown, the linewidth of the first grid line 110a is greater than the linewidth of the second grid line 120a. That is, if the linewidth of the first grid line 110a is P2 and the linewidth of the second grid line 120a is P3, then P2 > P3. Accordingly, in this embodiment, by having a larger linewidth for the first grid line 110a, the loss and interference of the touch signal during transmission can be reduced, i.e., the resistance can be reduced, thereby improving the signal strength and stability, which helps to improve the accuracy and reliability of electromagnetic touch and capacitive touch. At the same time, it reduces the difficulty in the manufacturing process of the first grid line 110a covering the second grid line 120a in its spatial projection in the thickness direction X, ensuring production yield.

[0047] Furthermore, the line width of the second grid line 120a is narrower than that of the first grid line 110a. This allows the first grid line 110a to cover the second grid line 120a more when at least a portion of the second grid channel 121 overlaps with at least a portion of the first grid channel 111 along the thickness direction X. This results in a certain degree of occlusion of the second grid line 120a, avoiding grid visibility issues. Consequently, it reduces the probability of moiré patterns appearing between the second grid channel 121 corresponding to the second grid line 120a and the pixel array on the electromagnetic capacitive touch device 10, thereby improving the display quality of the electromagnetic capacitive touch device 10.

[0048] Further, optionally, in one example, such as Figure 4 As shown, the line width difference between the first grid line 110a and the second grid line 120a is P1, where P1 = 1µm to 8µm. P1 = P2 - P3. It is understood that in the manufacturing process of the touch panel 100, there will be a certain process deviation between the first touch electrode layer 110 and the second touch electrode layer 120. To avoid the first grid line 110a failing to completely cover the second grid line 120a due to this process deviation, thus further affecting the grid appearance, this embodiment sets the line width difference P1 between the first grid line 110a and the second grid line 120a according to the magnitude of this process deviation, thereby reducing the difficulty of the manufacturing process and improving product yield.

[0049] In another example, P1 = 2µm to 7µm. In yet another embodiment, P1 = 2µm, 3µm, 4µm, 5µm, 6µm, or 7µm. Thus, this line width difference allows the line width of the first grid line 110a to be sufficiently large, thereby reducing the impedance of the first touch electrode layer 110 while reducing the risk of the second grid line 120a protruding excessively from the first grid line 110a, further reducing the probability of appearance defects.

[0050] An example is provided below: Assume that P2 = P1 + D; where D is a redundancy value determined by process deviations. In one example, D is twice the process deviation. Further, P2 can be P1 + D + b, where b is a correction coefficient, a constant, to compensate for deviations caused by other factors.

[0051] In the first example, P1 = 1µm. With a process deviation of ±1µm, D = 2µm, therefore P2 needs to be at least 3µm. In the second example, P1 = 2µm. With a process deviation of ±1.5µm, D = 3µm, and P2 needs to be at least 5µm. In the third example, P1 = 1µm. With a process deviation of ±2µm, D = 4µm, and P2 needs to be at least 5µm. In the fourth example, P1 = 1µm. With a process deviation of ±3.5µm, D = 7µm, and P2 needs to be at least 8µm.

[0052] In some embodiments, the first gap 1112 is a virtual routing area connecting two adjacent sub-grid channels 1111. A break is provided on the first grid line 110a of the virtual routing area to form an isolation zone for signal disconnection, thus separating the sub-grid channels 1111 on both sides. It is understood that without the first gap 1112, the signal from one end of the first grid channel 111 to the other requires wires from both ends to connect to the processing component 200 to form a loop. By setting the first gap 1112 to separate the two sub-grid channels 1111, the two ends on the same side are directly electrically connected, and the two ends on the other side can form a loop by connecting to the processing component 200 with wires, avoiding wires on one side and reducing the required layout size. Furthermore, the first gap 1112 can also be a blank gap, i.e., a design without grid lines, to ensure disconnection and isolation.

[0053] Meanwhile, the presence of the break allows countless tiny gaps to be formed on the first mesh channel 111, allowing more electric field lines to penetrate the first touch electrode layer 110 and reach the second touch electrode layer 120, thereby improving the shielded signal strength and enhancing the effects of capacitive and electromagnetic touch.

[0054] In one embodiment, see back Figure 1 as well as Figure 2The first touch electrode layer 110 is provided with a first lead 1113. The ends of the two sub-mesh channels 1111 on the same side are electrically connected via the first lead 1113. Thus, the first lead 1113 ensures a stable electrical connection between the two sub-mesh channels 1111, allowing signals to be transmitted smoothly between them. Simultaneously, the first lead 1113 also possesses a certain degree of flexibility and tensile strength, capable of adapting to slight deformations that may occur in the touch panel 100 under different usage scenarios. This ensures that even in complex environments, the two sub-mesh channels 1111 maintain a good electrical connection, thereby providing strong support for the precise touch and stable performance of the touch panel 100.

[0055] In another embodiment, such as Figure 5 As shown, the first touch electrode layer 110 has a grid connection area 1114. The ends of the two sub-grid channels 1111 on the same side are electrically connected via the grid connection area 1114. Thus, the grid connection area 1114 has a compact structure, does not occupy excessive space, and helps to achieve a thinner and lighter design for the touch panel 100, improving its overall aesthetics and portability. Furthermore, the presence of the grid connection area 1114 enhances the anti-interference capability of the touch panel 100, effectively shielding it from external electromagnetic interference, ensuring the accuracy and stability of touch operation, and optimizing the touch experience.

[0056] Similarly, in one embodiment, the first touch electrode layer 110 is provided with a plurality of second leads 1115. Sub-mesh channels 1111 are provided with a first end and a second end opposite each other along their length. The first ends of two sub-mesh channels 1111 on the same side are electrically connected. The second end is electrically connected to the touch connection area of ​​the touch panel 100 via the second leads 1115, and further connected to the processing component 200 via the touch connection area.

[0057] Furthermore, the second lead 1115 can form a loop by leading out from one side, eliminating the need for a large number of leads on the other side, further reducing the size of the bezel, while also making the electrical connection more stable, able to withstand a certain degree of bending and stretching, adapting to various deformations that the touch panel 100 may undergo during different uses, and ensuring long-term stable signal transmission.

[0058] In another embodiment, the second touch electrode layer 120 is provided with a plurality of third leads 122. The two ends of the second mesh channel 121 are respectively connected to the touch connection area of ​​the touch panel 100 via the third leads 122, and further connected to the processing component 200 via the touch connection area. Similarly, the two ends of the second mesh channel 121 are respectively connected to the touch connection area of ​​the touch panel 100 via the third leads 122, resulting in high stability of the electrical connection, capable of withstanding a certain degree of bending and stretching, adapting to various deformations that may occur in the touch panel 100 during different uses, and ensuring long-term stable signal transmission.

[0059] Alternatively, in one embodiment, see back Figure 2 The channel width of the first grid channel 111 is D1, where D1 = 2mm to 8mm. This channel width D1, between 2mm and 8mm, increases the sensing area of ​​the touch signal and improves its sensitivity. Furthermore, a wider channel width reduces signal loss and interference during transmission, improving signal stability and contributing to the accuracy and reliability of electromagnetic touch.

[0060] In one example, D1 = 3mm~7mm. In another example, D1 can be 3mm, 4mm, 5mm, 6mm, or 7mm, etc. This allows the second grid channel 121 to both increase the sensing area of ​​the touch signal, thereby improving the sensitivity of the touch signal, and reduce signal loss and interference during transmission, thus improving signal stability. It also reduces setup costs.

[0061] Optionally, in one embodiment, the width of the sub-grid channel 1111 can be 1mm to 4mm, and the width of the first gap 1112 can be set according to actual needs. In one example, the first gap 1112 is a row of breaks set on the grid line, and its width can be 8μm to 15μm, that is, the width of the break on the grid line. In another example, the first gap 1112 is multiple rows of breaks set on the first grid line 110a, and its width is determined by the span of the break and the grid size.

[0062] In another embodiment, see back Figure 2 The channel width of the second grid channel 121 is D2, where D2 = 2mm to 8mm. Similarly, a channel width D2 between 2mm and 8mm can increase the sensing area of ​​the touch signal and improve its sensitivity. Furthermore, a wider channel width can reduce signal loss and interference during transmission, improve signal stability, and contribute to enhancing the accuracy and reliability of capacitive touch.

[0063] In one example, D2 = 3mm~7mm. In another example, D2 can be 3mm, 4mm, 5mm, 6mm, or 7mm, etc.

[0064] In some embodiments, such as Figure 7 As shown, both the first grid channel 111 and the second grid channel 121 include a first connecting edge 100a and a second connecting edge 100b. One end of the second connecting edge 100b is connected to one end of the first connecting edge 100a; the included angle between the second connecting edge 100b and the first connecting edge 100a is α, where α = 30°~150°. It can be understood that the size of the included angle affects the grid density, thus affecting the grid aperture ratio. Within this included angle range, the grid aperture ratio will not be too small, ensuring that the density of the first and second grids is not too large, thus ensuring that the grid of the touch panel 100 is not visible.

[0065] Optionally, in one example, α = 60°~120°. In another example, α can be 60°, 75°, 90°, 115° or 120°, etc., without further restrictions.

[0066] Thus, when α = 60°~120°, the size of the grid opening can be further increased, allowing for increased grid density, reduced impedance of the first touch electrode layer 110 and the second touch electrode layer 120, and improved touch accuracy. Furthermore, within the included angle range, the included angle between the first connecting edge 100a and the second connecting edge 100b can be kept from being too large, preventing the grid from having excessively long sides. This improves the uniformity of the grid design, facilitates a more uniform electrical signal distribution, reduces touch signal attenuation during transmission, and helps improve the reliability of the touch panel 100.

[0067] See you later Figure 7 In one embodiment, the grid within the first grid channel 111 and the second grid channel 121 includes a first connecting edge 100a, a second connecting edge 100b, a third connecting edge 100c, and a fourth connecting edge 100d. The third connecting edge 100c is disposed opposite to the first connecting edge 100a, and the second connecting edge 100b and the fourth connecting edge 100d are connected between the first connecting edge 100a and the third connecting edge 100c, with the second connecting edge 100b and the fourth connecting edge 100d being disposed opposite to each other.

[0068] In one embodiment, see back Figure 3 as well as Figure 7 The spacing between the first connecting edge 100a and the third connecting edge 100c of the grid corresponding to the first grid channel 111 is the first spacing, and the spacing between the second connecting edge 100b and the fourth connecting edge 100d is the second spacing. The first spacing is L1, and the second spacing is L2. In one example, L1 = 100µm~400µm. In another example, L2 = 100µm~400µm.

[0069] In another embodiment, see back Figure 3 The spacing between the first connecting edge 100a and the third connecting edge 100c of the grid corresponding to the second grid channel 121 is the third spacing, and the spacing between the second connecting edge 100b and the fourth connecting edge 100d is the fourth spacing. The third spacing is L3, and the fourth spacing is L4. In one example, L3 = 200µm~800µm. In another example, L4 = 200µm~800µm. This spacing range allows the first grid to cover the second grid, thereby reducing the grid density after overlap and ensuring the appearance of the touch panel 100.

[0070] It should be noted that the number of grid channels on the first grid channel 111 and the second grid channel 121 can be one or more, such as two, three, four or five, etc., without much restriction here.

[0071] In conjunction with any embodiment of the second mesh channel 121 described above, such as Figure 1 as well as Figure 6 As shown, the first touch electrode layer 110 has a plurality of first mesh channels 111 and a plurality of second gaps 112. The second gaps 112 are disposed between two adjacent first mesh channels 111, so that the plurality of first mesh channels 111 are spaced apart from each other. The second touch electrode layer 120 has a plurality of second mesh channels 121 and a third gap 123. The third gap 123 is disposed between two adjacent second mesh channels 121, so that the plurality of second mesh channels 121 are spaced apart from each other.

[0072] Thus, by setting up multiple first grid channels 111 and second grid channels 121, the range of electromagnetic touch and the range of capacitive touch can be increased, thereby improving the touch performance of the touch panel 100.

[0073] Furthermore, by setting a second gap 112 between the first grid channels 111, the touch signal can be transmitted stably in the first grid channel 111, reducing mutual interference between signals; similarly, by setting a third gap 123 between the second grid channels 121, the touch signal can be transmitted independently in the second grid channel 121, reducing mutual interference between signals, which helps to improve the sensitivity and accuracy of electromagnetic touch and capacitive touch.

[0074] In some embodiments, the gap widths of the first gap 1112, the second gap 112, and the third gap 123 in the above embodiments can all be equal. Thus, by ensuring that the gap widths of the first gap 1112, the second gap 112, and the third gap 123 are all equal, the difficulty of setting up the touch panel 100 can be reduced, eliminating the need for differentiated processing. It should be noted that the equality of the first gap 1112, the second gap 112, and the third gap 123 can mean either approximately equal or completely equal. Approximately equal means that the gap difference between the three does not exceed a preset processing error.

[0075] In one embodiment, see back Figure 6 The gap width of the first gap 1112 is T1, the gap width of the second gap 112 is T2, and the gap width of the third gap 123 is T3. In one example, T1 = 1mm~3mm. In another example, T2 = 1mm~3mm. In yet another example, T3 = 1mm~3mm. Thus, this gap width can fully achieve insulation isolation between the first grid channels 111, between the second grid channels 121, and between the sub-grid channels 1111, improving the operational reliability of the touch panel 100.

[0076] Alternatively, in one embodiment, see back Figure 1 as well as Figure 7 Multiple second grid channels 121 are sequentially arranged along the second direction Y2. Multiple first grid channels 111 are sequentially arranged along the first direction Y1. The second direction Y2 and the first direction Y1 are intersected and both are perpendicular to the thickness direction X. Thus, the multiple first grid channels 111 are sequentially arranged along the first direction Y1, forming a set of parallel channels within the first grid channels 111. Similarly, the multiple second grid channels 121 are sequentially arranged along the second direction Y2, forming a set of parallel channels within the second grid channels 121.

[0077] Since the first direction Y1 and the second direction Y2 are intersected and both are perpendicular to the thickness direction X, the first grid channel 111 and the second grid channel 121 form an intersecting array structure on the plane of the touch panel 100, which can effectively cover the entire surface of the touch panel 100, reduce the blank area not covered by the touch electrode layer, and thus improve touch accuracy.

[0078] In one example, the first direction Y1, the second direction Y2, and the thickness direction X are all perpendicular to each other. Thus, by making the first direction Y1 and the second direction Y2 mutually perpendicular on the plane of the touch panel 100, the multiple first grid channels 111 and the multiple second grid channels 121 form an orthogonal array structure on the plane. This ensures that the touch panel 100 can accurately detect touch signals in both orthogonal directions, improving the horizontal and vertical range distribution of touch signals, increasing the touch interaction range, and enhancing sensitivity.

[0079] In another example, see back Figure 3 as well as Figure 4 As shown, multiple first grid lines 110a are arranged sequentially along the third direction Z1, and the remaining first grid lines 110a are arranged along the fourth direction Z2, so that the multiple first grid lines 110a intersect to form the grid of the first grid channel 111; multiple second grid lines 120a are arranged sequentially along the third direction Z1, and the remaining second grid lines 120a are arranged along the fourth direction Z2, so that the multiple second grid lines 120a intersect to form the grid of the second grid channel 121; wherein, the third direction Z1 and the fourth direction Z2 intersect; and the third direction Z1 and the fourth direction Z2 are not parallel to the second direction Y2, and the third direction Z1 and the fourth direction Z2 are not parallel to the first direction Y1; the third direction Z1 and the fourth direction Z2 are perpendicular to the thickness direction X.

[0080] Thus, since both the first grid line 110a and the second grid line 120a are arranged in two non-parallel directions (the third direction Z1 and the fourth direction Z2), the touch panel 100 can detect touch signals in multiple directions. Furthermore, the third direction Z1 and the fourth direction Z2 are not parallel to the first direction Y1 and the second direction Y2, which forms a complex grid structure on the touch panel 100. This allows the touch panel 100 to detect touch signals in multiple directions, improving the precision and accuracy of touch control and making it suitable for complex scenarios such as multi-touch and fine operation.

[0081] In some embodiments, the first touch electrode layer 110 and the second touch electrode layer 120 may be disposed on both sides of a substrate or other carrier, or disposed on the same side of a substrate or other carrier and an insulating layer is disposed between the first touch electrode layer 110 and the second touch electrode layer 120, or disposed on one side of different substrates or other carriers and bonded to each other.

[0082] In some embodiments, the touch panel 100 further includes a substrate, and the first touch electrode layer 110 and the second touch electrode layer 120 are disposed on opposite sides of the substrate so that the first touch electrode layer 110 and the second touch electrode layer 120 are insulated from each other by being disposed on opposite sides of the substrate.

[0083] In other embodiments, the touch panel 100 further includes an insulating layer sandwiched between the first touch electrode layer 110 and the second touch electrode layer 120 to achieve insulation stability between the first touch electrode layer 110 and the second touch electrode layer 120. Alternatively, insulating layers can be used to insulate each other; these insulating layers may include organic insulating coatings, silicon nitride, silicon oxide, etc.

[0084] Furthermore, the first touch electrode layer 110 and the second touch electrode layer 120 of the touch panel 100 are conductive layers, which can be electrically connected to the processing component 200 via the first lead 1113. In one example, at least one of a photoresist layer and a catalyst layer is further included between the conductive layer and the substrate, or at least one of a blackening layer and a protective layer is further included above the conductive layer, in order to improve the light emission uniformity of the touch panel 100, reduce grid visibility, and improve touch reliability.

[0085] Optionally, in one embodiment, the conductive layer can be a metal layer, such as copper or silver. It should be noted that the two sub-grid channels 1111 in the first grid channel 111 of the above embodiment can be electrically connected via wires, or by retaining a portion of the grid area to achieve electrical conduction via grid lines, etc. No further limitations are imposed here.

[0086] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0087] Furthermore, where the terms "second" or "first" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "second" or "first" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0089] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the first feature indicates that the second and first features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the first feature can mean that the second feature is directly above or diagonally above the first feature, or simply indicates that the second feature is at a higher horizontal level than the first feature. Similarly, "below," "under," and "below" the first feature can mean that the second feature is directly below or diagonally below the first feature, or simply indicates that the second feature is at a lower horizontal level than the first feature.

[0090] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0091] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The embodiments described above only illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A touch panel, characterized by, The touch panel comprises: a first touch electrode layer, the first touch electrode layer comprising a plurality of first grid lines intersecting to form a plurality of first grid channels; the first grid channel comprising two adjacent sub-grid channels and a first gap; the two sub-grid channels being spaced apart by the first gap, and the two sub-grid channels being electrically connected on the same side at one end; a second touch electrode layer, the second touch electrode layer and the first touch electrode layer being stacked and insulated; the second touch electrode layer comprising a plurality of second grid lines intersecting to form a plurality of second grid channels; wherein the spatial projection of the first grid line in the thickness direction covers the second grid line; the arrangement density of the first grid line is greater than the arrangement density of the second grid line.

2. The touch panel according to claim 1, wherein The arrangement density of the first grid line is twice the arrangement density of the second grid line.

3. The touch panel according to claim 1, wherein The line width of the first grid line is greater than the line width of the second grid line, and the second grid line is within the orthographic projection area of the first grid line in the thickness direction.

4. The touch panel according to claim 3, wherein The line width difference between the first grid line and the second grid line is P1, P1 = 1 µm ~ 8 µm.

5. The touch panel according to claim 1, wherein The first gap is a virtual wiring area, and the virtual wiring area is connected between the two adjacent sub-grid channels; a break is provided on the first grid line of the virtual wiring area.

6. The touch panel according to any one of claims 1 to 5, wherein The first touch electrode layer is provided with a first lead wire; the two sub-grid channels on the same side are electrically connected at one end through the first lead wire; Alternatively, the first touch electrode layer is provided with a grid connection area; the two sub-grid channels on the same side are electrically connected at one end through the grid connection area.

7. The touch panel according to any one of claims 1 to 5, wherein The first touch electrode layer is provided with a plurality of second lead wires; the sub-grid channel is relatively provided with a first end and a second end along the length direction thereof; the first ends of the two sub-grid channels on the same side are electrically connected; and the second ends are electrically connected to a touch connection area of the touch panel through the second lead wires; And / or, the second touch electrode layer is provided with a plurality of third lead wires; the two ends of the second grid channel are connected to the touch connection area of the touch panel through the third lead wires.

8. The touch panel according to any one of claims 1 to 5, wherein The channel width of the first grid channel is D1, D1 = 2 mm ~ 8 mm; And / or, the channel width of the second grid channel is D2, D2 = 2 mm ~ 8 mm.

9. The touch panel according to any one of claims 1 to 5, wherein The intersection angle of the first grid lines and the intersection angle of the second grid lines are α, α = 30° ~ 150°.

10. An electromagnetic capacitive touch device, characterized in that, The touch panel comprises a processing assembly and any one of the above claims 1 to 9; the processing assembly is electrically connected to the first grid channel of the first touch electrode layer and the second grid channel of the second touch electrode layer, respectively; wherein the first grid channel and the second grid channel are common channels for electromagnetic touch and capacitive touch.

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