Touch-control screen and touch-control apparatus

Abstract

Disclosed in the present application are a touch-control screen and a touch-control apparatus. The touch-control screen comprises n first signal channels and m second signal channels that are orthogonal to the first signal channels, wherein the first signal channels and the second signal channels are used for transmitting a driving signal of a touch-control chip and transmitting a capacitance detection signal and a magnetic field detection signal to the touch-control chip, n≥2, and m≥2; each first signal channel comprises a plurality of first direction electrodes, and each second signal channel comprises a plurality of second direction electrodes; each first direction electrode and each second direction electrode both comprise an electric conductor, and the electric conductor comprises a starting end and a tail end that are used for connecting to the touch-control chip by means of a connecting wire; and the electric conductor has a preset planar meander shape, such that the electric conductor has inductive characteristics. The present application can improve the touch-control performance of a touch-control screen, and improve the communication efficiency of the touch-control screen.

Description

Touch screens and touch devices Technical Field

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

[0002] At present, with the continuous advancement of touch screen technology, the human-computer interaction functions of most electronic products on the market are realized by touch screens, especially various electronic terminal products, such as mobile phones, tablets, notebooks, e-books and other electronic terminals, most of which use capacitive touch screens for human-computer interaction.

[0003] However, capacitive touchscreens still have some shortcomings. For example, the touch electrodes only have electric field coupling, which results in a relatively limited means of adjusting the touchscreen's performance. Furthermore, when a capacitive touchscreen communicates with an active pen, signal transmission relies on capacitive sensing between the pen tip and the touchscreen, resulting in low communication efficiency.

[0004] Summary of the Invention

[0005] In view of this, the present application provides a touch screen and a touch device for improving the touch performance of the touch screen and improving the communication efficiency of the touch screen. The technical solution of the present application is as follows:

[0006] In a first aspect, the present application provides a touch screen, comprising n first signal channels and m second signal channels orthogonal to the first signal channels, wherein the first signal channels and the second signal channels are used to transmit a driving signal of a touch chip and transmit a capacitance detection signal and a magnetic field detection signal to the touch chip, wherein n≥2 and m≥2; wherein the first signal channel comprises a plurality of first direction electrodes, and the second signal channel comprises a plurality of second direction electrodes; the first direction electrodes and the second direction electrodes both comprise a conductor, and the conductor comprises a starting end and an end end for being connected to the touch chip via a connecting line; the conductor is a preset planar zigzag shape so that the conductor has an inductive characteristic.

[0007] In one embodiment of the present application, the planar zigzag shape of the conductor includes a planar spiral shape or a serpentine shape.

[0008] In one embodiment of the present application, the planar spiral includes a first planar spiral and a second planar spiral; wherein, the conductor takes the starting end as the center and spirals horizontally to the end according to a first preset spiral parameter to form the first planar spiral; or, the conductor takes the starting end or the end as the starting point, spirals forward to a center according to a second preset spiral parameter and then spirals reversely to the corresponding end or the starting end to form the second planar spiral.

[0009] In one embodiment of the present application, the first preset spiral parameters include spiral spacing distance, number of spiral turns and rotation direction, and the second preset spiral parameters include spiral spacing distance, number of positive spiral turns and number of negative spiral turns.

[0010] In one embodiment of the present application, the conductor is in the shape of the second planar spiral, the conductor is rectangular as a whole, and the starting end and the ending end are arranged outside the conductor; or, the conductor is rhombus as a whole, and the starting end and the ending end are arranged outside the conductor; or, the number of positive spiral turns of the conductor is different from the number of negative spiral turns, and one of the starting end and the ending end is arranged outside the conductor.

[0011] In one embodiment of the present application, the conductor is folded and extended from the starting end to the end end according to preset folding parameters to form the serpentine trace shape.

[0012] In one embodiment of the present application, the preset folding parameters include folding interval distance, folding length and folding number.

[0013] In one embodiment of the present application, the folding and extending direction of the conductor of the first direction electrode is the same as that of the conductor of the second direction electrode; or, the folding and extending direction of the conductor of the first direction electrode is orthogonal to that of the conductor of the second direction electrode.

[0014] In one embodiment of the present application, the conductor is in the first plane spiral shape, and the conductor of the first direction electrode and the conductor of the second direction electrode rotate along the same center of a circle, so that the first direction electrode and the second direction electrode form a coaxial coupling.

[0015] In one embodiment of the present application, the touch screen also includes a plurality of reference electrodes, the reference electrodes are in the shape of the first plane spiral, the reference electrodes are arranged between the conductor of the first direction electrode and the conductor of the second direction electrode, and rotate along the same center of a circle as the conductor of the first direction electrode and the conductor of the second direction electrode, and the reference electrodes are used to transmit a reference voltage.

[0016] In one embodiment of the present application, the plurality of first-direction electrodes of the first signal channel are connected in parallel through the starting end or the end of the conductor, and the plurality of second-direction electrodes of the second signal channel are connected in parallel through the starting end or the end of the conductor; or, the plurality of first-direction electrodes of the first signal channel are connected in series through the starting end or the end of the conductor, and the plurality of second-direction electrodes of the second signal channel are connected in series through the starting end or the end of the conductor.

[0017] In one embodiment of the present application, the other ends of the first signal channel and the second signal channel respectively transmit corresponding driving voltages.

[0018] According to a second aspect of the present application, a touch screen is provided, comprising n first signal channels, wherein the first signal channels are used to transmit a driving signal of a touch chip and transmit a capacitance detection signal and a magnetic field detection signal to the touch chip, wherein n≥2; wherein the first signal channel comprises a plurality of first direction electrodes, wherein the first direction electrodes comprise a conductor, wherein the conductor comprises a starting end and an end end for being connected to the touch chip via a connecting line; and wherein the conductor is a preset planar zigzag shape so that the conductor has an inductive characteristic.

[0019] A third aspect of the present application provides a touch device, including a touch chip and the touch screen.

[0020] In one embodiment of the present application, the touch device also includes an active pen; the touch chip is used to: transmit a driving signal to the first signal channel or the second signal channel during a touch detection cycle, and transmit the capacitance detection signal and the magnetic field detection signal through the corresponding second signal channel or the first signal channel; during a communication cycle with the active pen, transmit a communication signal to the starting end or the end end of the conductor of the first direction electrode of the first signal channel, and transmit a communication signal to the starting end or the end end of the conductor of the second direction electrode of the second signal channel.

[0021] This solution configures the conductive bodies of the first and second directional electrodes in the touch screen to have planar, zigzag shapes with inductive properties. This allows for electric and magnetic field coupling between the first and second directional electrodes. By driving the first and second directional electrodes, capacitance detection signals and magnetic field detection signals are generated. By combining these signals to detect touch operations, the touch screen's touch performance can be improved. Furthermore, because the first and second directional electrodes have inductive properties, the ability to transmit and receive wireless communication signals between the touch screen and the active pen can be enhanced in scenarios involving communication with an active pen, thereby improving the touch screen's communication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic block diagram of a touch screen provided in an embodiment of the present application.

[0023] FIG2 is a schematic block diagram of a first touch electrode provided in an embodiment of the present application.

[0024] FIG3 is a schematic block diagram of an overlapping arrangement of a first direction electrode and one of the second direction electrodes provided by an embodiment of the present application.

[0025] FIG4 is a schematic block diagram of an overlapping arrangement of a first direction electrode, a second direction electrode, and a reference electrode provided by an embodiment of the present application.

[0026] FIG5 is a schematic block diagram of a parallel connection of touch electrodes provided by an embodiment of the present application.

[0027] FIG6 is a schematic block diagram of a touch electrode connected in series according to an embodiment of the present application.

[0028] FIG7 is a schematic block diagram of a bridge-type parallel connection of touch electrodes provided in an embodiment of the present application.

[0029] FIG8 is a schematic block diagram of a second touch electrode provided in an embodiment of the present application.

[0030] FIG9 is a schematic block diagram of a bridge-type series connection of touch electrodes provided by an embodiment of the present application.

[0031] FIG10 is a schematic block diagram of a third touch electrode provided in an embodiment of the present application.

[0032] FIG11 is a schematic block diagram of a touch electrode connected in series according to an embodiment of the present application.

[0033] FIG12 is a schematic block diagram of a second type of touch electrodes connected in series according to an embodiment of the present application.

[0034] FIG13 is a schematic block diagram of a touch control device provided in an embodiment of the present application.

[0035] FIG14 is a schematic block diagram of a second touch screen provided in an embodiment of the present application.

[0036] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0037] It should be noted that, in the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0038] It should also be noted that the method disclosed in the embodiments of the present application or the method shown in the flowchart includes one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchanged with each other, and some steps can also be deleted.

[0039] At present, with the continuous advancement of touch screen technology, the human-computer interaction functions of most electronic products on the market are realized by touch screens, especially various electronic terminal products, such as mobile phones, tablets, notebooks, e-books and other electronic terminals, most of which use capacitive touch screens for human-computer interaction.

[0040] However, capacitive touchscreens still have some shortcomings. For example, the touch electrodes only have electric field coupling, which results in a relatively limited means of adjusting the touchscreen's performance. Furthermore, when a capacitive touchscreen communicates with an active pen, signal transmission relies on capacitive sensing between the pen tip and the touchscreen, resulting in low communication efficiency.

[0041] The present application provides a touch screen and a touch device for improving the touch performance of the touch screen and improving the communication efficiency of the touch screen.

[0042] Please refer to FIG1 , which is a schematic block diagram of a touch screen provided in an embodiment of the present application.

[0043] In an embodiment of the present application, the touch screen 100 includes n first signal channels 110 (examples X1 to X5 in Figure 1), and m second signal channels 120 (examples Y1 to Y4 in Figure 1) orthogonal to the first signal channels 110. The first signal channels 110 and the second signal channels 120 are used to transmit the driving signals of the touch chip and transmit the capacitance detection signals and the magnetic field detection signals to the touch chip, where n≥2 and m≥2.

[0044] The first signal channel 110 includes a plurality of first-directional electrodes 111, and the second signal channel 120 includes a plurality of second-directional electrodes 121. Both the first-directional electrodes 111 and the second-directional electrodes 121 comprise conductors, each having a starting end and a terminal end for connecting to the touch control chip via a connecting wire. The conductors have a predetermined planar zigzag shape to impart inductive properties.

[0045] It can be understood that this solution, by configuring the conductive bodies of the first and second directional electrodes in the touch screen to have a planar, zigzag shape with inductive properties, allows electric and magnetic field coupling to occur between the first and second directional electrodes in the touch screen. This allows the first and second directional electrodes to be driven to generate capacitance detection signals and magnetic field detection signals. By combining these capacitance detection signals and magnetic field detection signals to detect touch operations, the touch performance of the touch screen can be improved. Furthermore, because the first and second directional electrodes have inductive properties, the ability to transmit and receive wireless communication signals between the touch screen and the active pen can be improved in scenarios where communication with an active pen is required, thereby improving the communication efficiency of the touch screen.

[0046] In some embodiments, the planar zigzag shape of the conductor includes a planar spiral or serpentine shape. In some embodiments, the plurality of first-direction electrodes of the first signal path are connected in parallel via the beginning or end of the conductor, and the plurality of second-direction electrodes of the second signal path are connected in parallel via the beginning or end of the conductor. Alternatively, the plurality of first-direction electrodes of the first signal path are connected in series via the beginning or end of the conductor, and the plurality of second-direction electrodes of the second signal path are connected in series via the beginning or end of the conductor.

[0047] In some embodiments, the planar spiral includes a first planar spiral and a second planar spiral, wherein the conductor spirals horizontally from the starting end to the end according to first predetermined spiral parameters to form the first planar spiral. For example, please refer to Figure 2, which is a schematic block diagram of a first touch electrode provided in an embodiment of the present application. The touch electrode includes a first direction electrode 210a and a second direction electrode 220a.

[0048] The first direction electrode 210a includes a first conductor, and the planar zigzag shape of the first conductor includes a first planar spiral shape that spirals horizontally from a first starting end A to a first end B according to preset spiral parameters. The second direction electrode 220a includes a second conductor, and the planar zigzag shape of the second conductor includes a first planar spiral shape that spirals horizontally from a second starting end C to a second end D according to preset spiral parameters.

[0049] In the embodiment of the present application, the first preset spiral parameters include the distance between spirals, the number of spiral turns, and the rotation direction. For example, the rotation directions of the first conductor and the second conductor can be the same or opposite, and the rotation direction includes clockwise rotation and counterclockwise rotation.

[0050] In some embodiments, the conductor is in a first planar spiral shape, and the conductor of the first direction electrode and the conductor of the second direction electrode rotate about the same center of a circle, so that the first direction electrode and the second direction electrode form a coaxial coupling. For example, as shown in FIG3 , the first direction electrode 210 b is coaxially arranged with one of the second direction electrodes 220 b , the first conductor is arranged in the spiral gap of the second conductor, and the first conductor 211 b is separated from the second conductor by a first distance.

[0051] It can be understood that in the embodiment of the present application, the rotation direction of the first conductor and the second conductor are the same. Since the first conductor is arranged in the spiral gap of the second conductor, when driving touch detection, a strong magnetic field coupling can be generated between the first conductor and the second conductor, making the change of the magnetic field detection signal more obvious when the touch operation is generated, thereby improving the accuracy of touch operation detection.

[0052] In some embodiments, the touch screen also includes multiple reference electrodes 230c. As shown in Figure 4, the reference electrode 230c is in a first plane spiral shape. The reference electrode 230c is arranged between the conductor of the first direction electrode 210c and the conductor of the second direction electrode 220c, and rotates along the same center of a circle as the conductor of the first direction electrode 210c and the conductor of the second direction electrode 220c. The reference electrode 230c is used to transmit a reference voltage.

[0053] The reference electrode 230 c includes a third conductor, which is disposed in a gap between the first conductor and the second conductor. The third conductor is spaced a second distance from the first conductor and the second conductor, respectively.

[0054] It is understood that the reference voltage can be, for example, zero, meaning the third conductor can be connected to system ground via the touch control chip. Alternatively, it can be another regulated voltage, meaning the third conductor can be controlled by the touch control chip to transmit a regulated voltage, thereby adjusting the capacitance between the first and second conductors and improving touch detection performance.

[0055] In a scenario where the first direction electrode and the second direction electrode are coaxially arranged, the first direction electrode and the second direction electrode can be connected in a parallel matrix to form the first signal channel and the second signal channel, or connected in a series matrix to form the first signal channel and the second signal channel. Alternatively, in a scenario where the first direction electrode, the second direction electrode, and the reference electrode are coaxially arranged, the first direction electrode and the second direction electrode can be connected in a parallel matrix to form the first signal channel and the second signal channel, or connected in a series matrix to form the first signal channel and the second signal channel.

[0056] Taking the scenario where the first directional electrodes and the second directional electrodes overlap as an example, please refer to Figures 5 and 6. In Figures 5 and 6, the first directional electrodes and the second directional electrodes are rectangular and evenly distributed on the touch screen.

[0057] The first signal channels X1 and X2 shown in FIG5 include a plurality of first direction electrodes connected in parallel via connecting lines, and the second signal channels Y1, Y2, and Y3 include a plurality of second direction electrodes connected in parallel via connecting lines. The first signal channels X1 and X2 shown in FIG6 include a plurality of first direction electrodes connected in series via connecting lines, and the second signal channels Y1, Y2, and Y3 include a plurality of second direction electrodes connected in series via connecting lines.

[0058] In scenarios where the first and second directional electrodes are not coaxially arranged, the first and second directional electrodes can be evenly distributed across the touch screen. As shown in Figure 7, the first and second directional electrodes 710, 720 are diamond-shaped and evenly distributed across the touch screen. Multiple first directional electrodes 710 can be connected in parallel via connecting wires in a bridge-like manner to form first signal channels X1 and X2. Multiple second directional electrodes 720 can also be connected in parallel via connecting wires in a bridge-like manner to form second signal channels Y1, Y2, and Y3.

[0059] In some embodiments, multiple first direction electrodes 710 may be connected in series via bridge-type connection wires to form a first signal channel, and multiple second direction electrodes 720 may also be connected in series via bridge-type connection wires to form a second signal channel, which is not limited here.

[0060] In some embodiments, the conductor spirals forward from the starting end or the end according to the second predetermined spiral parameter to a center and then spirals backward to the corresponding end or starting end to form a second planar spiral. For example, please refer to Figure 8, which is a schematic block diagram of the second touch electrode provided in an embodiment of the present application.

[0061] In the embodiment of the present application, the planar zigzag shape of the conductor 810 in the touch electrode 800 includes a second planar spiral shape centered at the midpoint between the starting end A and the ending end B, spiraling horizontally in a forward direction to the starting end and in a reverse direction to the ending end according to preset spiral parameters. The second preset spiral parameters include the spiral spacing, the number of forward spiral turns, and the number of reverse spiral turns.

[0062] That is, the first direction electrode includes a first conductor, and the planar zigzag shape of the first conductor includes a second planar spiral shape that spirals horizontally in a forward direction to the first starting end and in a reverse direction to the first ending according to preset spiral parameters, with the midpoint between the first starting end and the first ending as the rotation center. The second direction electrode includes a second conductor, and the planar zigzag shape of the first conductor includes a second planar spiral shape that spirals horizontally in a forward direction to the second starting end and in a reverse direction to the second ending, with the midpoint between the second starting end and the second ending as the rotation center, with the preset spiral parameters.

[0063] In some embodiments, as shown in FIG8 , the conductor 810 is generally rectangular, with the starting end A and the ending end B disposed outside the conductor 810. For example, the first direction electrodes and the second direction electrodes formed by the conductor 810 are rectangular, and the first direction electrodes and the second direction electrodes are evenly distributed on the touch screen.

[0064] In other embodiments, as shown in FIG8 , the conductor 810a is generally diamond-shaped, with the starting end A and the ending end B disposed outside the conductor 810a. For example, the first and second directional electrodes formed by the conductor 810a are diamond-shaped, and the first and second directional electrodes are evenly distributed on the touch screen.

[0065] In some embodiments, as shown in FIG8 , the number of positive and negative spiral turns of conductor 810b is different, and one of the starting end A and the ending end B is disposed outside conductor 810b. The first and second directional electrodes formed by conductor 810b can be diamond-shaped, and the first and second directional electrodes are evenly distributed across the touch screen.

[0066] In an embodiment of the present application, the first signal channel includes a plurality of first-direction electrodes connected in parallel via connecting lines, and the second signal channel includes a plurality of second-direction electrodes connected in parallel via connecting lines. Alternatively, the first signal channel includes a plurality of first-direction electrodes connected in series via connecting lines, and the second signal channel includes a plurality of second-direction electrodes connected in series via connecting lines.

[0067] As shown in Figure 9, in a scenario where the first direction electrodes 910 and the second direction electrodes 920 are diamond-shaped, multiple first direction electrodes 910 can be connected in series in a bridge-type manner through connecting wires to form first signal channels X1 and X2, and multiple second direction electrodes 920 can also be connected in series in a bridge-type manner through connecting wires to form second signal channels Y1 and Y2, which is not limited here.

[0068] In some embodiments, the conductor is folded from the beginning to the end according to a preset folding parameter to form a serpentine trace. For example, please refer to FIG10 , which is a schematic block diagram of a third touch electrode provided in an embodiment of the present application.

[0069] In the embodiment of the present application, the touch electrode 1000 includes a conductor 1010 , and the planar zigzag shape of the conductor 1010 includes a serpentine shape folded and extended from a first starting end A to a first end B according to preset folding parameters.

[0070] That is, the first direction electrode includes a first conductor, the planar zigzag shape of the first conductor comprising a serpentine trace that folds and extends from a first starting end to a first end according to preset folding parameters. The second direction electrode includes a second conductor, the planar zigzag shape of the second conductor comprising a serpentine trace that folds and extends from a second starting end to a second end according to preset folding parameters. The preset folding parameters include a folding interval, a folding length, and a folding number.

[0071] In some embodiments, the first direction electrodes and the second direction electrodes are rectangular, and the first direction electrodes and the second direction electrodes are evenly distributed on the screen body of the touch screen.

[0072] Referring to Figures 11 and 12 , the first and second directional electrodes are diamond-shaped and evenly distributed across the touch screen. As shown in Figure 11 , the first and second conductive bodies 1111a and 1121a fold and extend in the same direction, or as shown in Figure 12 , the first and second conductive bodies 1111b and 1121b fold and extend in orthogonal directions.

[0073] In some embodiments, the first signal channel includes a plurality of first direction electrodes connected in parallel via connecting lines, and the second signal channel includes a plurality of second direction electrodes connected in parallel via connecting lines. Alternatively, as shown in Figures 11 and 12, the first signal channels X1 and X2 include a plurality of first direction electrodes 1110 connected in series via connecting lines, and the second signal channels Y1 and Y2 include a plurality of second direction electrodes 1120 connected in series via connecting lines.

[0074] Please refer to Figure 13, which is a schematic block diagram of a touch control device provided in an embodiment of the present application. The touch control device 1300 includes a touch control chip 1310 and a touch screen 1320 in any of the above embodiments.

[0075] In some embodiments, the touch control device 1300 also includes an active stylus. The touch control chip 1310 is configured to: transmit a drive signal to the first signal channel or the second signal channel during a touch detection cycle, and transmit a capacitance detection signal and a magnetic field detection signal through the corresponding second signal channel or first signal channel. During a communication cycle with the active stylus, the touch control chip 1310 transmits a communication signal to the beginning or end of a first-directional electrode conductor in the first signal channel, and transmits a communication signal to the beginning or end of a second-directional electrode conductor in the second signal channel.

[0076] Transmitting a signal to the start or end of a conductor is single-ended driving, while transmitting a signal to both the start and end of a conductor is dual-ended driving. The touch control chip 1310 may include a switch matrix connected to the start and end of each electrode's conductor via connecting wires. When single-ended driving is required, the switch matrix connects the start or end of the electrode to the touch control chip 1310. When dual-ended driving is required, the switch matrix connects the start or end of the electrode to the touch control chip 1310. In other words, the other ends of the first signal channel and the second signal channel transmit corresponding driving voltages.

[0077] It can be understood that when the touch chip 1310 communicates with the active pen through the touch screen 1320 , single-ended driving of each electrode with inductive characteristics can form an antenna matrix, thereby enhancing the strength of the communication signal and improving the efficiency of communication with the active pen.

[0078] Please refer to Figure 14, which is a schematic block diagram of a second touch screen provided in an embodiment of the present application, wherein the touch screen 1400 includes n first signal channels.

[0079] In the embodiment of the present application, the first signal channel is used to transmit the touch chip's drive signal and transmit the capacitance detection signal and magnetic field detection signal to the touch chip, where n ≥ 2. The first signal channel includes a plurality of first-direction electrodes (S1 to S9, a total of nine first-direction electrodes, in the example of FIG14 ). The first-direction electrodes include a conductor, each of which includes a starting end and an end for connecting to the touch chip via a connecting wire. The conductor has a predetermined planar zigzag shape to impart inductive properties.

[0080] In some embodiments, as shown in FIG14 , the conductor of the first direction electrode spirals horizontally from the starting end to the end according to first preset spiral parameters to form a first planar spiral. Alternatively, the conductor of the first direction electrode can spiral forward to a center according to second preset spiral parameters starting from the starting end or the end, and then spiral reversely to the corresponding end or starting end to form a second planar spiral. Alternatively, the conductor of the first direction electrode folds from the starting end to the end according to preset folding parameters to form a serpentine trace, where the preset folding parameters include a folding interval distance, a folding length, and a number of folds.

[0081] It is understood that the touch screen 1400 may be a touch screen using self-capacitance detection, where the starting end of the conductive body of the first directional electrode is used to transmit a drive signal, and the ending end is used to ground or transmit a reference voltage. Alternatively, the starting end of the conductive body of the first directional electrode is used to ground or transmit a reference voltage, and the ending end is used to transmit a drive signal.

[0082] In some embodiments, as shown in FIG14 , the conductors of the first direction electrodes are rectangular as a whole and are distributed in a matrix manner on the screen of the touch screen 1400. When the touch device equipped with the above-mentioned touch screen 1400 includes an active pen, the touch chip connected to the touch screen 1400 can form an array antenna matrix through the matrix-type first direction electrodes to communicate and interact with the active pen, thereby enhancing the strength of the communication signal and improving the efficiency of communication with the active pen.

[0083] The embodiments described above are merely preferred embodiments of the present application and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present application.

Claims

1. A touch screen, characterized in that: The touch control chip comprises n first signal channels and m second signal channels orthogonal to the first signal channels, wherein the first signal channels and the second signal channels are used to transmit a driving signal of the touch control chip and transmit a capacitance detection signal and a magnetic field detection signal to the touch control chip, wherein n≥2 and m≥2; Wherein, the first signal channel includes a plurality of first direction electrodes, and the second signal channel includes a plurality of second direction electrodes; The first direction electrode and the second direction electrode each include a conductor, and the conductor includes a starting end and an end end for connecting to the touch control chip through a connecting wire; The conductor is in a preset planar zigzag shape, so that the conductor has inductance characteristics.

2. The touch screen according to claim 1, wherein: The planar zigzag shape of the conductor includes a planar spiral shape or a serpentine shape.

3. The touch screen according to claim 2, wherein: The planar spiral shape includes a first planar spiral shape and a second planar spiral shape; The conductor is centered at the starting end and spirals horizontally to the end according to a first preset spiral parameter to form the first planar spiral shape; Alternatively, the conductor takes the starting end or the ending end as a starting point, spirals forward to a center according to a second preset spiral parameter, and then spirals backward to the corresponding ending end or the starting end, so as to form the second planar spiral shape.

4. The touch screen according to claim 3, wherein: The first preset spiral parameters include spiral spacing, spiral turns, and rotation direction, and the second preset spiral parameters include spiral spacing, forward spiral turns, and reverse spiral turns.

5. The touch screen according to claim 4, wherein: The conductor is in the second plane spiral shape, The conductor is rectangular in shape as a whole, and the starting end and the ending end are arranged outside the conductor; or, The conductor is in a rhombus shape as a whole, and the starting end and the ending end are arranged outside the conductor; or, The number of the positive spiral turns of the conductor is different from the number of the negative spiral turns, and one of the starting end and the ending end is arranged outside the conductor.

6. The touch screen according to claim 2, wherein: The conductor is folded from the starting end to the end end according to preset folding parameters to form the serpentine trace shape.

7. The touch screen according to claim 6, wherein: The preset folding parameters include folding interval distance, folding length and folding number.

8. The touch screen according to claim 7, wherein: The folding and extending directions of the conductors of the first direction electrodes and the conductors of the second direction electrodes are the same; or, The conductor of the first direction electrode and the conductor of the second direction electrode The fold extension direction is orthogonal.

9. The touch screen according to claim 3, wherein: The conductor is in the first plane spiral shape, and the conductor of the first direction electrode and the conductor of the second direction electrode rotate along the same center of a circle, so that the first direction electrode and the second direction electrode form a coaxial coupling.

10. The touch screen according to claim 9, wherein: The touch screen also includes multiple reference electrodes, which are in the first plane spiral shape. The reference electrodes are arranged between the conductor of the first direction electrode and the conductor of the second direction electrode, and rotate along the same center of a circle as the conductor of the first direction electrode and the conductor of the second direction electrode. The reference electrodes are used to transmit a reference voltage.

11. The touch screen according to any one of claims 1 to 10, wherein: The plurality of first-direction electrodes of the first signal channel are connected in parallel via the starting end or the ending end of the conductor, and the plurality of second-direction electrodes of the second signal channel are connected in parallel via the starting end or the ending end of the conductor; Alternatively, the plurality of first direction electrodes of the first signal channel are connected in series through the starting end or the ending end of the conductor, and the plurality of second direction electrodes of the second signal channel are connected in series through the starting end or the ending end of the conductor.

12. The touch screen according to claim 11, wherein: The other ends of the first signal channel and the second signal channel respectively transmit corresponding driving voltages.

13. A touch screen, characterized in that: comprising n first signal channels, wherein the first signal channels are used to transmit a driving signal of a touch control chip and transmit a capacitance detection signal and a magnetic field detection signal to the touch control chip, wherein n≥2; The first signal channel includes a plurality of first direction electrodes, the first direction electrodes include a conductor, and the conductor includes a start end and an end end for connecting to the touch control chip through a connecting line; The conductor is in a preset planar zigzag shape, so that the conductor has inductance characteristics.

14. A touch device, characterized in that: The invention comprises a touch chip and a touch screen as claimed in any one of claims 1 or 13.

15. The touch device according to claim 14, wherein: The touch control device further includes an active pen; The touch control chip is used for: During a touch detection cycle, transmitting a driving signal to the first signal channel or the second signal channel, and transmitting the capacitance detection signal and the magnetic field detection signal through the corresponding second signal channel or the first signal channel; During the communication cycle with the active pen, a communication signal is transmitted to the starting end or the ending end of the conductor of the first direction electrode of the first signal channel, and a communication signal is transmitted to the starting end or the ending end of the conductor of the second direction electrode of the second signal channel.

Images