Stimulation circuit, touch device, electronic equipment and storage medium

Abstract

The present disclosure relates to an excitation circuit, a touch device, an electronic device and a storage medium. The excitation circuit is applied to the touch device and includes a substrate, a first conductive component arranged on the substrate and extending along a first direction, and a plurality of second conductive components arranged on the substrate and extending along a second direction. One end of each of the plurality of second conductive components is connected to the first conductive component to form a comb-shaped structure. In the comb-shaped structure, the first conductive component is a comb back, and the plurality of second conductive components are comb teeth. Any two conductive components of the plurality of second conductive components support a closed-loop excitation coil with the first conductive component in a conducting state to emit an excitation signal. The excitation signal is used to provide energy for a touch accessory used with the touch device. The first conductive component and the second conductive component are configured as a comb shape, and the conducting second conductive components form an excitation coil. This avoids the need for punching due to the crossing of the excitation coil wiring, thereby reducing the setting cost of the excitation coil.

Description

Technical Field

[0001] This disclosure relates to the field of touch technology, specifically to an excitation circuit, a touch device, an electronic device, and a storage medium. Background Technology

[0002] With the rapid development of technology, various new touch technologies are being increasingly widely applied in display devices. In touch operation, users can use a stylus to perform touch operations on the device, improving touch accuracy and resolution, thereby enabling more complex touch operations. Furthermore, the touch device can contain an excitation coil for emitting excitation signals. By sending excitation signals to the stylus, the stylus can be charged, allowing it to draw power from the device during normal use and extending its battery life.

[0003] To reduce signal dead zones, different excitation coils need to be overlapped, resulting in crossovers in the coil traces. The traces at the crossover points require additional processing, leading to higher costs for setting up the excitation coils. Summary of the Invention

[0004] In order to solve the above-mentioned problems in the related technologies, this disclosure provides an excitation circuit, a touch device, an electronic device, and a storage medium.

[0005] A first aspect of this disclosure provides an excitation circuit for use in a touch device, comprising: a substrate; a first conductive component disposed on the substrate and extending along a first direction; and a plurality of second conductive components disposed on the substrate and extending along a second direction, respectively connected to the first conductive component to form a comb-like structure, wherein the first conductive component in the comb-like structure is the back of the comb, and the plurality of second conductive components are the teeth of the comb; any two of the plurality of second conductive components support forming a closed-loop excitation coil with the first conductive component when conducting to emit an excitation signal, the excitation signal being used to provide energy to a touch accessory used in conjunction with the touch device.

[0006] In some embodiments, the second conductive component located at the non-comb edge of the plurality of second conductive components is a metal mesh conductive component and / or a transparent conductive component.

[0007] In some embodiments, the first conductive component and the second conductive component located at the edge of the comb teeth among the plurality of second conductive components are solid metal conductive components.

[0008] In some embodiments, the first spacing between each adjacent second conductive component located at the non-comb edge is the same.

[0009] In some embodiments, there is a second interval between the centers of each adjacent second conductive component located at the non-comb edge, the second interval being within a preset interval threshold range.

[0010] In some embodiments, the width of the second conductive component located at the non-comb edge in the first direction is less than or equal to a width threshold.

[0011] In some embodiments, the first interval is equal to the width of the second conductive member in the first direction.

[0012] In some embodiments, at least three of the plurality of second conductive components support the formation of a plurality of excitation coils with the first conductive component when the circuit is turned on.

[0013] In some embodiments, the second conductive component includes a first end and a second end opposite to each other, the first end being connected to the first conductive component, and the excitation circuit including: an input end connected to the second end for inputting a current signal to the second conductive component; an output end connected to the second end for connecting the second end to a fixed level or grounding; and a control circuit connected to the input end, the output end, and the second end respectively, the control circuit being used to control the conduction state between the second end and the input end, and also for controlling the conduction state between the second end and the output end; wherein the second conductive component connected to the input end, the first conductive component, and the second conductive component connected to the output end form a closed-loop excitation coil.

[0014] In some embodiments, the substrate is a transparent film.

[0015] A second aspect of this disclosure provides a touch device, including: an excitation circuit as described in the first aspect.

[0016] In some embodiments, the touch device includes: a display area and a non-display area, wherein the projection area of ​​the display area on the substrate is a first projection area, the projection area of ​​the non-display area on the substrate is a second projection area, a second conductive component located at a non-comb edge is located in the first projection area, and the first conductive component and the second conductive component located at a comb edge are located in the second projection area; a display panel including a first side and a second side opposite to each other, wherein the first side is the side of the display panel that does not display an image, and the second side is the side of the display panel that displays an image; a touch layer disposed on the second side for sensing and receiving touch data from the touch accessory, wherein the substrate is disposed between the touch layer and the display panel, or the substrate is disposed on the first side.

[0017] In some embodiments, the first conductive component is spaced from the edge of the first projection area in the second direction by a distance greater than or equal to a second width threshold; the second conductive component located at the edge of the comb teeth is spaced from the edge of the first projection area in the first direction by a distance greater than or equal to the second width threshold.

[0018] In some embodiments, the second conductive component located at the non-comb edge has a minimum interval with the edge of the first projection area in the first direction, the minimum interval being greater than a third width threshold.

[0019] In some embodiments, the second conductive component includes a second end that is not connected to the first conductive component, and the second end extends beyond the edge of the first projection area by a first distance in the second direction.

[0020] A third aspect of this disclosure provides an electronic device, comprising: a memory for storing instructions; and a processor for invoking the instructions stored in the memory to execute an excitation control method performed by the excitation circuitry described in the first aspect.

[0021] A fourth aspect of this disclosure provides a computer-readable storage medium storing instructions that, when executed by a processor, perform an excitation control method as described in the first aspect by an excitation circuit.

[0022] The excitation unit provided in this disclosure can include the following beneficial effects: by configuring the first conductive component and the second conductive component in a comb shape, and making the conductive second conductive component and the first conductive component form an excitation coil, different areas can be flexibly covered by switching different combinations of conductive second conductive components, avoiding the need for the excitation coil to be stacked in order to improve coverage, which would cause cross routing when the coil is routed, thereby reducing the setup cost of the excitation coil. Attached Figure Description

[0023] The above and other objects, features, and advantages of embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0024] Figure 1 This is a schematic diagram of an excitation circuit provided in an embodiment of this disclosure.

[0025] Figure 2 This is a schematic diagram of an excitation circuit provided in an embodiment of this disclosure.

[0026] Figure 3 This is a circuit diagram of an excitation circuit provided in an embodiment of this disclosure.

[0027] Figure 4This is a schematic diagram of the stacked structure of a touch device provided in an embodiment of this disclosure.

[0028] Figure 5 This is a schematic diagram of the excitation circuit structure of a touch device provided in an embodiment of this disclosure.

[0029] Figure 6 This is a schematic diagram of the stacked structure of a touch device provided in an embodiment of this disclosure.

[0030] Figure 7 A flowchart of an excitation control method according to an embodiment of the present disclosure is shown.

[0031] Figure 8 A flowchart of an excitation control method according to an embodiment of the present disclosure is shown.

[0032] Figure 9 This is a block diagram illustrating an excitation control device according to some embodiments of the present disclosure.

[0033] Figure 10 This is a block diagram illustrating an electronic device according to some embodiments of the present disclosure.

[0034] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0035] The principles and spirit of this disclosure will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are given merely to enable those skilled in the art to better understand and implement this disclosure, and are not intended to limit the scope of this disclosure in any way.

[0036] It should be noted that although the terms "first," "second," etc., are used herein to describe different modules, steps, and data in the embodiments of this disclosure, these terms are only for distinguishing between different modules, steps, and data, and do not indicate a specific order or degree of importance. In fact, the terms "first," "second," etc., can be used interchangeably.

[0037] The excitation circuit, touch device, electronic device, and computer-readable storage medium provided in the embodiments of this disclosure can be applied to a touch device, wherein the touch device can be any of the following: capacitive touch panel, electromagnetic touch panel, touch display screen, capacitive handwriting tablet, and electromagnetic handwriting tablet.

[0038] For example, a touch device could be an electromagnetic writing tablet, a simple and quick interactive handwriting device. The electromagnetic writing tablet can be used in conjunction with an electromagnetic pen. The electromagnetic writing tablet may include an electromagnetic induction antenna board and a control board; the electromagnetic induction antenna board includes a transmitting coil and a receiving coil. The transmitting coil sends electromagnetic waves to the electromagnetic pen, and the receiving coil receives the resonant signal generated by the resonance between the electromagnetic waves sent by the electromagnetic pen and the transmitting coil. The control board amplifies the received signal and processes the data.

[0039] The transmitting coil on the electromagnetic induction antenna board can emit an excitation signal. The resonant circuit in the electromagnetic pen, after being excited by the excitation signal, can provide working energy for the electromagnetic pen. After the transmitting coil stops transmitting, the resonant circuit in the electromagnetic pen will oscillate and continue to decay. The receiving coil on the electromagnetic induction antenna board will receive the oscillation signal emitted by the electromagnetic pen, thereby realizing coordinate positioning and data transmission.

[0040] In related technologies, excitation coils can be placed on a coil array layer. To avoid signal blind spots between two adjacent excitation coils, the excitation coils are often stacked in their arrangement to eliminate these blind spots. However, this also results in the conductor traces of adjacent excitation coils crossing. To prevent short circuits at these crossing points, holes need to be drilled in the circuit board substrate to allow for layered routing of the conductors from different coils. However, this additional drilling process is costly, and the drilling structure can affect the display effect of the touch display device.

[0041] To address the aforementioned technical problems, an excitation circuit is provided according to embodiments of this disclosure.

[0042] Figure 1 This is a schematic diagram of an excitation circuit provided in an embodiment of this disclosure.

[0043] In some embodiments, such as Figure 1 As shown, the excitation circuit may include: a substrate 100, a first conductive component 10, and a plurality of second conductive components 20.

[0044] The substrate 100 can serve as a skeleton structure for the excitation circuit, providing routing space and support for the first conductive component 10 and the second conductive component 20.

[0045] The first conductive component 10 and the second conductive component 20 can be conductive components.

[0046] The first conductive component 10 can be disposed on the substrate 100 and extend along the first direction, and a plurality of second conductive components 20 can be disposed on the substrate 100 and extend along the second direction. One end of the plurality of second conductive components 20 is connected to the first conductive component 10, thereby forming a comb-like structure with the first conductive component 10 and the plurality of second conductive components 20. The first conductive component 10 is the back of the comb-like structure, and the plurality of second conductive components 20 are the teeth of the comb-like structure.

[0047] Any two of the plurality of second conductive components 20 support forming a closed-loop excitation coil with the first conductive component 10 when the circuit is turned on, so as to emit an excitation signal for providing power to touch accessories used with the touch device.

[0048] In this case, the second conductive component 20 being turned on means that at least one of the second conductive components 20 is connected to a signal source, and at least another of the second conductive components 20 is connected to ground or other output structures, so that the two second conductive components 20 and the first conductive component 10 between the two second conductive components 20 form a complete current loop and constitute an excitation coil, thereby receiving current signals and transmitting excitation signals, and the touch accessory can receive excitation signals and obtain energy.

[0049] By configuring the first conductive component 10 and the second conductive component 20 in a comb shape, and making the conductive second conductive component 20 and the first conductive component 10 form an excitation coil, different areas can be flexibly covered by switching different combinations of conductive second conductive components 20. This avoids the need for the excitation coils to be stacked in order to improve coverage, which would cause cross-wiring when the coil wiring is done, thereby reducing the setup cost of the excitation coil.

[0050] In some embodiments, such as Figure 1 As shown, the second conductive component 20 includes a first sub-conductive component 21, which is the second conductive component located at the edge of the comb teeth among a plurality of second conductive components 20. The first conductive component 10 and the first sub-conductive component 21 can be solid metal conductive components.

[0051] At the same width, solid metal conductive parts have lower resistance, so the first conductive part 10 and the first sub-conductive part 21, which are solid metal conductive parts, can have a smaller width while maintaining lower resistance, so as to form a narrower edge structure in the comb structure and improve the adaptability of the excitation circuit to narrow-bezel devices.

[0052] In some embodiments, such as Figure 1As shown, the second conductive component 20 includes a second sub-conductive component 22, which is a second conductive component located at the non-comb edge among a plurality of second conductive components 20. The second sub-conductive component 22 can be a metal mesh conductive component and / or a transparent conductive component.

[0053] By configuring the second sub-conductive component 22 as a metal mesh conductive component and / or a transparent conductive component, the second sub-conductive component 22 can have good light transmittance, thereby improving the overall light transmittance performance of the excitation coil and reducing interference with the display image passing through the excitation circuit. Furthermore, because the second sub-conductive component has good light transmittance, its resistance can be reduced by increasing its width without affecting the overall light transmittance performance of the excitation coil, thereby reducing the resistance of the excitation coil and improving its excitation efficiency.

[0054] In some embodiments, such as Figure 1 As shown, the width L1 of the second sub-conductive component 22 in the first direction is less than or equal to the width threshold. When the width L1 is greater than the width threshold, the probability that the touch accessory is above the position of the conductive component when performing a touch operation will increase. The excitation signal above the conductive component will be orthogonal and cancel each other out, thus causing the touch accessory to be unable to receive the excitation signal to charge normally.

[0055] In some embodiments, when the frequency of the excitation signal is configured to be 600 kHz to 700 kHz, the width L1 of the second sub-conductive member 22 in the first direction may be less than or equal to 10 mm. For example, the width L1 of the second sub-conductive member 22 in the first direction may be 7.5 mm.

[0056] In some embodiments, such as Figure 1 As shown, the first interval L3 between each adjacent second sub-conductive component 22 is the same. The first interval L3 is the distance between the edges of two adjacent second sub-conductive components 22.

[0057] By configuring each first interval L3 to be equal, the interval between the second sub-conductive components 22 can be unified, which avoids designing and calculating the interval between different second sub-conductive components 22 one by one, which helps to reduce the difficulty of circuit design and also simplifies the algorithm design for selecting different second conductive components 20 to conduct.

[0058] However, this disclosure is not limited to this, and each first interval L3 can also be configured such that the difference does not exceed a set threshold.

[0059] In some embodiments, such as Figure 1As shown, there can be a second interval L2 between the centers of each adjacent second sub-conductive component 22, and the second interval L2 is within a preset interval threshold range. When the second interval L2 is too large, the excitation coil formed by the second sub-conductive component 22 and the first conductive component 10 will be too large, resulting in coil energy dispersion and thus reducing excitation efficiency. When the second interval L2 is too small, the area covered by the excitation coil formed by the second sub-conductive component 22 and the first conductive component 10 will be too small, thus requiring more second sub-conductive components 22 and increasing the setup cost of the excitation circuit.

[0060] In some embodiments, when the frequency of the excitation signal is configured to be 600 kHz to 700 kHz, the preset interval threshold range can be 8 mm to 15 mm.

[0061] Figure 2 This is a schematic diagram of an excitation circuit provided in an embodiment of this disclosure.

[0062] In some embodiments, such as Figure 2 As shown, the first interval L3 and the width L1 of the second conductive component 20 in the first direction are equal. By configuring the first interval L3 and the width L1 of the second conductive component 20 in the first direction to be equal, the structural parameter variables in the circuit calculation process can be reduced, which is beneficial to reducing the difficulty of circuit design and can also simplify the algorithm design for selecting different second conductive components 20 to conduct.

[0063] However, this disclosure is not limited thereto. The width L1 of the first interval L3 and the second conductive member 20 in the first direction can also be configured such that the difference does not exceed a set threshold.

[0064] In some embodiments, when the frequency of the excitation signal is configured to be 600 kHz to 700 kHz, the first interval L3 can be 7.5 mm and the width L1 can be 7.5 mm.

[0065] In some embodiments, such as Figure 1 and Figure 2 As shown, at least three of the multiple second conductive components 20 can form multiple excitation coils with the first conductive component 10 when the circuit is open. By forming multiple excitation coils to emit excitation signals, the strength of the excitation signal can be increased, thereby improving the charging efficiency of the accessory device. Furthermore, by forming multiple excitation coils, the number of turns of the excitation coil can be reduced while maintaining the excitation signal strength. This reduces the conductor length of the excitation coil, lowers its resistance, and improves the excitation efficiency of the excitation signal.

[0066] For example, the first second conductive component 20 can be connected to the signal source, and the second and third second conductive components 20 can be connected to ground. This causes the first second conductive component 20, the first conductive component 10, and the second second conductive component 20 to form a first excitation coil, and the first second conductive component 20, the first conductive component 10, and the third second conductive component 20 to form a second excitation coil.

[0067] In some embodiments, such as Figure 1 As shown, the first direction and the second direction are perpendicular to each other. This makes the extension direction of the first conductive component 10 and the extension direction of the second conductive component 20 perpendicular to each other, reducing the sharp angle structure in the coil, improving the magnetic field uniformity of the formed excitation coil, and reducing the situation where the magnetic field strength changes abruptly at the edge of the coil.

[0068] In some embodiments, the substrate 100 can be a transparent film, allowing light to pass through the substrate 100, thereby improving the transparency of the excitation circuit and reducing the interference of the substrate 100 on the display image passing through the excitation circuit.

[0069] In other embodiments, the substrate 100 may also be a flexible circuit board substrate or a rigid circuit board substrate, which can reduce the setup cost of the excitation circuit.

[0070] In some embodiments, the first conductive component 10 and the second conductive component 20 may be disposed on one side of the substrate 100, and the other side of the substrate 100 may have conductive components that are mirror-symmetrically disposed with respect to the first conductive component 10 and the second conductive component 20. When the second conductive component 20 is turned on, the conductive component that is mirror-symmetrically disposed with respect to this conductive component on the other side of the substrate 100 may be activated, thereby enabling the conductive components located on different sides of the substrate 100 to form a parallel relationship, thereby reducing the total resistance of the excitation circuit and improving the excitation efficiency of the excitation coil.

[0071] Based on the same concept, embodiments of this disclosure also provide an excitation circuit.

[0072] Figure 3 This is a circuit diagram of an excitation circuit provided in an embodiment of this disclosure.

[0073] In some embodiments, such as Figure 3 As shown, the excitation circuit may include: a substrate 100, a first conductive component 10, a plurality of second conductive components 20, an input terminal TX, an output terminal RX, and a control circuit 30.

[0074] The substrate 100 can serve as a skeleton structure for the excitation circuit, providing routing space and support for the first conductive component 10 and the second conductive component 20.

[0075] The first conductive component 10 and the second conductive component 20 can be conductive components.

[0076] The first conductive component 10 can be disposed on the substrate 100 and extend along the first direction, and a plurality of second conductive components 20 can be disposed on the substrate 100 and extend along the second direction. One end of the plurality of second conductive components 20 is connected to the first conductive component 10, thereby forming a comb-like structure with the first conductive component 10 and the plurality of second conductive components 20. The first conductive component 10 is the back of the comb-like structure, and the plurality of second conductive components 20 are the teeth of the comb-like structure.

[0077] The second conductive component 20 may include a first end and a second end opposite to each other, and the first end may be connected to the first conductive component 10.

[0078] The first direction and the second direction can be different directions. The first direction can be, for example, as follows: Figure 3 The X direction and its opposite direction are shown. The second direction can be as follows: Figure 3 The Y-direction and its opposite direction are shown.

[0079] The input terminal TX can be connected to the second terminal. The input terminal TX can be used as a signal source to input a current signal to the second conductive component 20, so that the excitation coil can generate an excitation signal according to the current signal.

[0080] The output terminal RX can be connected to the second terminal. The output terminal RX can be used to connect the second terminal to a fixed level or to ground the second terminal.

[0081] The control circuit 30 can be connected to the input terminal TX, the output terminal RX, and the second terminal respectively. The control circuit 30 is used to control the conduction state between the second terminal and the input terminal TX, and also to control the conduction state between the second terminal and the output terminal RX.

[0082] The second conductive component 20 connected to the input terminal TX, the first conductive component 10, and the second conductive component 20 connected to the output terminal RX form a closed-loop excitation coil to emit an excitation signal. The excitation signal is used to provide energy for touch accessories used with touch devices.

[0083] By configuring the first conductive component 10 and the second conductive component 20 in a comb shape, and controlling the second conductive component 20 to be connected to the input terminal TX and the output terminal RX through the control circuit 30, the second conductive component 20 and the first conductive component 10 form an excitation coil. Different areas can be flexibly covered by switching different combinations of the second conductive component 20, avoiding the need for the excitation coil to be stacked to improve coverage, which would cause cross-wiring when the coil is routed, thereby reducing the setup cost of the excitation coil.

[0084] In some embodiments, such as Figure 3 As shown, the control circuit 30 may include a first switch K1 and a second switch K2. The first switch K1 may be located between the input terminal TX and the second terminal, and the first switch K1 can control the conduction state between the input terminal TX and the second terminal. The second switch K2 may be located between the output terminal RX and the second terminal, and the second switch K2 can control the conduction state between the output terminal RX and the second terminal.

[0085] Based on the same concept, this disclosure also provides a touch device, which may include an excitation circuit. The touch device can transmit an excitation signal to a touch accessory through the excitation circuit, thereby charging the touch accessory and enabling the touch accessory to obtain energy from the touch device during use, thereby improving the battery life of the touch accessory.

[0086] Figure 4 This is a schematic diagram of the stacked structure of a touch device provided in an embodiment of this disclosure.

[0087] In some embodiments, such as Figure 4 As shown, the touch device may include a display panel 200 and a touch layer 300.

[0088] The display panel 200 is used to display images. The display panel 200 may include a first side and a second side opposite to each other. The first side of the display panel 200 may be the side where no image is displayed, and the second side of the display panel 200 may be the side where an image is displayed. The display panel 200 may be stacked on top of the substrate 100. The touch layer 300 is used to sense and receive touch data from a touch accessory. The touch layer 300 may be disposed on the second side of the display panel 200.

[0089] The substrate 100 can be disposed between the touch layer 300 and the display panel 200, allowing the excitation circuit to be located inside the touch device. This avoids the traces of the excitation circuit being exposed outside the touch device and improves the integration of the touch device. Furthermore, when the touch layer 300 interacts with the touch accessory, the signal does not need to pass through the substrate 100, thereby ensuring the accuracy of the touch data acquired by the touch layer 300 and improving the positioning accuracy of the touch accessory by the touch layer 300.

[0090] Figure 6 This is a schematic diagram of the stacked structure of a touch device provided in an embodiment of this disclosure.

[0091] In some embodiments, such as Figure 6As shown, the touch device may include: a display panel 200, which is used to display images. The display panel 200 may include a first side and a second side opposite to each other. The first side of the display panel 200 may be the side of the display panel 200 that does not display images, and the second side of the display panel 200 may be the side of the display panel 200 that displays images.

[0092] The substrate 100 can be disposed on the first side of the display panel 200. Since the display path of the display panel 200 does not include the excitation circuit, the transparency requirement for the excitation circuit can be reduced, thereby reducing the cost of the excitation circuit.

[0093] In some embodiments, the first conductive component 10 and the second conductive component 20 on the substrate 100 can be connected to a flexible circuit board or wires, so that the first conductive component 10 and the second conductive component 20 can be connected to the motherboard or chip of the touch device, thereby allowing the first conductive component 10 and the second conductive component 20 to be connected to the control circuit 30, the input terminal TX and the output terminal RX.

[0094] Figure 5 This is a schematic diagram of the excitation circuit structure of a touch device provided in an embodiment of this disclosure.

[0095] In some embodiments, such as Figure 5 As shown, a touch device may include a display area and a non-display area.

[0096] The substrate 100 may include a first projection area 101 and a second projection area 102. The first projection area 101 is the projection area of ​​the display area on the substrate 100, and the second projection area 102 is the projection area of ​​the non-display area on the substrate 100.

[0097] The second sub-conductive component 22 may be located in the first projection area 101, and the first conductive component 10 and the first sub-conductive component 21 may be located in the second projection area 102.

[0098] The first conductive component 10 and the first sub-conductive component 21 can be solid metal conductive components.

[0099] At the same width, solid metal conductive components have lower resistance. Therefore, the first conductive component 10 and the first sub-conductive component 21, which are solid metal conductive components, can have a smaller width while maintaining lower resistance, so as to form a narrower edge structure in the comb structure, reduce the width occupied by the first conductive component 10 and the first sub-conductive component 21, so as to reduce the width of the non-display area of ​​the touch device, realize the narrow bezel design, and improve the screen ratio of the touch device.

[0100] The second conductive component 22 can be a metal mesh conductive component and / or a transparent conductive component.

[0101] By configuring the second sub-conductive component 22 as a metal mesh conductive component and / or a transparent conductive component, the second sub-conductive component 22 can have good light transmittance, thereby improving the overall light transmittance performance of the excitation coil and reducing the impact of the excitation circuit on the display effect of the touch device. Furthermore, because the second sub-conductive component has good light transmittance, its width can be increased to reduce resistance without affecting the overall light transmittance performance of the excitation coil, thereby reducing the resistance of the excitation coil and improving its excitation efficiency.

[0102] In some embodiments, such as Figure 5 As shown, the third interval L4 between the first conductive component 10 and the edge of the first projection area 101 in the second direction is greater than or equal to the second width threshold, and the fourth interval L5 between the first sub-conductive component 21 and the edge of the first projection area 101 in the first direction is greater than or equal to the second width threshold.

[0103] By maintaining a distance between the first conductive component 10 and the first sub-conductive component 21 and the edge of the first projection area 101, it can be ensured that when the touch accessory approaches the edge of the display area, the stylus and the first conductive component 10 and the sub-conductive component that make up the excitation coil still maintain a certain distance, avoiding the stylus from being too close to the conductive component or falling directly on the conductive component, thereby ensuring that the excitation coil can normally charge the stylus.

[0104] In some embodiments, the second width threshold can be 0.5 mm. However, this disclosure is not limited thereto, and the specific value of the second width threshold can be changed according to the width of the non-display area and the stimulus requirements of the touch accessory.

[0105] In some embodiments, such as Figure 5 As shown, the second sub-conductive component 22 has a minimum distance from the edge of the first projection area 101 in the first direction, and the minimum distance is greater than the third width threshold. Since the display effect at the edge of the display area is inferior to that at the center of the display area, by keeping the second sub-conductive component 22 at a certain distance from the edge of the first projection area 101, it is possible to avoid placing the conductive component at the edge of the display area, thereby ensuring the display effect at the edge of the display area.

[0106] In some embodiments, such as Figure 5 As shown, the second end of the second conductive component 20 can extend beyond the edge of the first projection area 101 by a first distance L6 in the second direction, thereby expanding the coverage area of ​​the excitation coil and providing a better excitation signal for the edge position of the first projection area 101, which can improve the excitation effect of the touch device when the touch accessory is at the edge of the display area.

[0107] In some embodiments, the first distance L6 may be greater than or equal to 0.5 mm. However, this disclosure is not limited thereto, and the specific value of the first distance L6 may be changed according to the excitation requirements of the touch accessory.

[0108] In some embodiments, the substrate 100 is a flexible circuit board to meet the routing requirements of the excitation circuit inside the touch device.

[0109] In some embodiments, the substrate 100 can be a transparent film, which can be a polyimide film, a polyethylene terephthalate film, or other transparent films with good light transmittance. By configuring the substrate 100 as a transparent film, the display image of the display panel 200 can be displayed normally through the substrate 100, thereby reducing the interference of the substrate 100 on the display effect of the display panel 200.

[0110] In some embodiments, this disclosure provides a novel wiring method for conductive materials on a transparent film, the wiring method being comb-shaped. Each comb tooth (first conductive component 10) and the back of the comb (second conductive component 20) have a certain width.

[0111] By increasing the width of the conductive components, the resistance of the excitation coil can be reduced, thereby improving the excitation efficiency of the excitation coil.

[0112] The first conductive component 10 and the second conductive component 20 located at the edge of the comb teeth can be disposed in the projection area of ​​the non-display area on the substrate 100. The first conductive component 10 and the second conductive component 20 located at the edge of the comb teeth can be solid metal wires, thereby reducing the volume and width of the conductive components while maintaining low resistance, so as to adapt to the narrower non-display area size requirements.

[0113] The second conductive component 20, located at the non-comb edge, can be disposed within the projection area of ​​the display area on the substrate 100. The second conductive component 20 can be a metal mesh line or a transparent material conductor, thereby reducing interference with the display panel 200's image display effect while increasing the width of the conductive component to reduce its resistance. Specifically, the second conductive component 20 can employ a micron-sized metal mesh line to further reduce interference with the display panel 200's image display effect.

[0114] The control circuit 30 can selectively connect any two or more comb teeth to the input terminal TX and the output terminal RX respectively to form a closed-loop excitation coil. The excitation coil can emit an excitation signal to the stylus operating on the touch device, thereby providing energy to the stylus and realizing energy excitation for passive pens or energy replenishment for active pens. The stylus can include electromagnetic pens, magnetocapacitive pens, active capacitive pens, and other accessory devices used for touch control.

[0115] In some embodiments, the control circuit 30 may preferentially select the comb teeth closest to the touch position to be connected to the input terminal TX and the output terminal RX, respectively. However, this disclosure is not limited to this; the control circuit 30 may calculate and select the comb teeth to form an excitation coil based on a built-in algorithm. The control circuit 30 may also pre-store the correspondence data between different touch positions and the comb teeth, and the control circuit 30 may select different comb teeth to form an excitation coil based on the pre-stored correspondence data.

[0116] In some embodiments, under the control of the control circuit 30, the second conductive component 20 can have three connection options: floating, connected to the input terminal TX and receiving a signal with driving capability (sine wave or square wave, etc.), connected to the output terminal RX and connected to a fixed level or grounded.

[0117] In some embodiments, the spacing width between two adjacent second conductive components 20 located on the non-comb edge is the same, and the spacing between the second conductive component 20 located on the non-comb edge and the adjacent second conductive component 20 may be different, so as to avoid the second conductive component 20 being positioned too close to the edge of the display area and reduce the impact on the display effect of the edge of the display area.

[0118] In some embodiments, when the excitation signal frequency is in the range of 600kHz to 700kHz, the center-to-center spacing width between two adjacent second conductive components 20 can be controlled within the range of 8mm to 15mm. However, this disclosure is not limited to this; depending on the frequency of the excitation signal and the excitation requirements of the touch accessory, other width ranges that allow the touch accessory to obtain greater energy can be used.

[0119] In some embodiments, when the excitation signal frequency is in the range of 600kHz to 700kHz, the width of the second conductive member 20 located at the non-comb edge is less than or equal to 10mm. An excessively wide second conductive member 20 will cause the energy of the excitation coil to be too dispersed, thereby reducing excitation efficiency. However, this disclosure is not limited to this; depending on the frequency of the excitation signal and the excitation requirements of the touch accessory, other width ranges may be used.

[0120] In some embodiments, when the touch accessory is positioned on a second conductive member 20, the second conductive member 20 is suspended to prevent it from becoming part of the excitation coil. When the touch accessory is positioned above the conductor of the excitation coil, the excitation signals are orthogonal and cancel each other out above the conductor, making it difficult for the touch accessory to obtain energy from the excitation signal.

[0121] In some embodiments, the control circuit 30 can arbitrarily turn on different combinations of second conductive components 20 to form an excitation coil, and under the same conditions, the smaller the coil width, the greater the energy obtained by the touch accessory, but the more second conductive components 20 are required.

[0122] When the excitation signal frequency is in the range of 600kHz to 700kHz, by controlling the conduction of the second conductive component 20, the width of the excitation coil can be approximately 15mm. This allows the touch accessory to effectively extract energy from the excitation signal while using fewer second conductive components 20. However, this disclosure is not limited to this; other width ranges can be used depending on the frequency of the excitation signal and the excitation requirements of the touch accessory.

[0123] In some embodiments, a resonant circuit may be provided within the touch accessory, which can emit a corresponding oscillation signal after receiving an excitation signal from the excitation circuit. Furthermore, when selecting the second conductive component 20 to be turned on, the second conductive component 20 connected to the input terminal TX is always located on the same side as the second conductive component 20 connected to the output terminal RX. This is to avoid the excitation signal phase changing after the relative positions of the input terminal TX and the output terminal RX are interchanged, which would cause the excitation signal to conflict with the oscillation signal, resulting in the oscillation signal being canceled out.

[0124] However, this disclosure is not limited to this. It is also possible to adjust the current phase of different input terminals TX so that the excitation signal emitted by the excitation coil matches the oscillation signal fed back by the touch accessory.

[0125] Figure 7 A flowchart of an excitation control method according to an embodiment of the present disclosure is shown.

[0126] Based on the same concept, embodiments of this disclosure also provide an incentive control method, such as... Figure 7 As shown, the incentive control method includes the following steps:

[0127] S10: In response to receiving touch data from the touch accessory, confirm that the touch accessory is in the first position;

[0128] S20: Control at least one of the plurality of second conductive components located on the first side of the first position to be connected to the input terminal;

[0129] S30: Control at least one of the multiple second conductive components located on the second side of the first position to be connected to the output terminal, wherein the second conductive component connected to the input terminal, the first conductive component, and the second conductive component connected to the output terminal constitute an excitation coil;

[0130] S40: The excitation coil emits an excitation signal based on the current signal at the input terminal.

[0131] Among them, the first side of the first position and the second side of the first position are the two sides of the first position that are opposite to each other in the first direction.

[0132] After receiving touch data from the touch accessory, the location can be confirmed using the information contained in the touch data, thus determining that the touch accessory is located at a first position. After determining the position of the touch accessory, at least one of the multiple second conductive components located on both sides of the first position is connected to the input and output terminals, thereby enabling the excitation coil formed by the connected second conductive component and the first conductive component to cover the first position. Finally, based on the current signal at the input terminal, the excitation coil emits an excitation signal to charge the touch accessory. By selecting different combinations of connected second conductive components to form different excitation coils, different areas can be flexibly covered while avoiding the need for stacked excitation coils. This avoids the need for cross-wiring of excitation coils to increase coverage, thereby reducing the setup cost of the excitation coils.

[0133] Figure 8 A flowchart of an excitation control method according to an embodiment of the present disclosure is shown.

[0134] In some embodiments, such as Figure 8 As shown, the incentive control method includes the following steps:

[0135] S10: In response to receiving touch data from the touch accessory, confirm that the touch accessory is in the first position;

[0136] S11: In response to the first position coinciding with the location of any one of the plurality of second conductive components, disconnect the connection between this second conductive component and the output terminal and the input terminal;

[0137] S20: Control at least one of the plurality of second conductive components located on the first side of the first position to be connected to the input terminal;

[0138] S30: Control at least one of the multiple second conductive components located on the second side of the first position to be connected to the output terminal, wherein the second conductive component connected to the input terminal, the first conductive component, and the second conductive component connected to the output terminal constitute an excitation coil;

[0139] S40: The excitation coil emits an excitation signal based on the current signal at the input terminal.

[0140] Among them, the first side of the first position and the second side of the first position are the two sides of the first position that are opposite to each other in the first direction.

[0141] After receiving touch data from the touch accessory, the location can be confirmed using the information contained in the touch data, thus determining that the touch accessory is located at a first position. After determining the position of the touch accessory, when the touch accessory is precisely on a second conductive component, the second conductive component is suspended to prevent it from becoming part of the excitation coil. At least one of the multiple second conductive components located on both sides of the first position is connected to the input and output terminals, so that the excitation coil formed by the connected second conductive component and the first conductive component can cover the first position. Finally, based on the current signal at the input terminal, the excitation coil emits an excitation signal to charge the touch accessory. By selecting different combinations of conductive second components to form different excitation coils, different areas can be flexibly covered while avoiding the stacking of excitation coils, thus avoiding the need for cross-wiring of excitation coils to increase coverage and reducing the setup cost of the excitation coils. Furthermore, by preventing conductive components below the touch accessory from forming an excitation coil, it can be ensured that the excitation coil normally provides energy to the touch accessory.

[0142] Figure 9 This is a block diagram illustrating an excitation control device according to some embodiments of the present disclosure.

[0143] Based on the same concept, embodiments of this disclosure also provide an excitation control device, such as... Figure 9 As shown, the excitation control device includes: a monitoring unit 51, used to confirm that the touch accessory is located in a first position in response to receiving touch data from the touch accessory; and a control unit 52, used to control at least one of the plurality of second conductive components located on the first side of the first position to be connected to the input terminal, and to control at least another of the plurality of second conductive components located on the second side of the first position to be connected to the output terminal. The second conductive component connected to the input terminal, the first conductive component, and the second conductive component connected to the output terminal form an excitation coil. According to the current signal at the input terminal, the excitation coil emits an excitation signal. The first side of the first position and the second side of the first position are two opposite sides of the first position in a first direction.

[0144] In some embodiments, the control unit 52 is further configured to disconnect the second conductive component from the output terminal and the input terminal in response to the first position coinciding with the location of any one of the plurality of second conductive components.

[0145] Regarding the apparatus in the above embodiments, the specific manner in which each unit or module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0146] Figure 10 This is a block diagram illustrating an electronic device according to some embodiments of the present disclosure.

[0147] Based on the same concept, such as Figure 10 As shown, one embodiment of this disclosure provides an electronic device 400. The electronic device 400 includes a memory 401, a processor 402, and an input / output (I / O) interface 403. The memory 401 is used to store instructions. The processor 402 is used to execute the stimulus control method of the embodiments of this disclosure by calling the instructions stored in the memory 401. The processor 402 is connected to both the memory 401 and the I / O interface 403, for example, via a bus system and / or other forms of connection mechanisms (not shown). The memory 401 can be used to store programs and data, including the program for the stimulus control method involved in the embodiments of this disclosure. The processor 402 executes various functional applications and data processing of the electronic device 400 by running the program stored in the memory 401.

[0148] In this embodiment of the disclosure, the processor 402 may be implemented in at least one of the following hardware forms: digital signal processor (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 402 may be one or a combination of several of the following: central processing unit (CPU) or other processing units with data processing capability and / or instruction execution capability.

[0149] The memory 401 in this embodiment may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD).

[0150] In this embodiment of the disclosure, the I / O interface 403 can be used to receive input instructions (such as numeric or character information, and to generate key signal inputs related to user settings and function control of the electronic device 400), and can also output various information (such as images or sounds) to the outside. In this embodiment of the disclosure, the I / O interface 403 may include one or more of the following: a physical keyboard, function keys (such as volume control keys, power buttons, etc.), a mouse, a joystick, a trackball, a microphone, a speaker, and a touch panel.

[0151] Based on the same concept, embodiments of this disclosure also provide a computer-readable storage medium storing instructions that, when executed by a processor, perform an incentive control method.

[0152] It is understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0153] The methods and apparatus disclosed herein can be implemented using standard programming techniques, and various method steps can be implemented using rule-based logic or other logic. It should also be noted that the terms "apparatus" and "module" as used herein and in the claims are intended to include implementations using one or more lines of software code and / or hardware implementations and / or devices for receiving input.

[0154] Any step, operation, or procedure described herein may be performed or implemented using one or more hardware or software modules, either alone or in combination with other devices. In one embodiment, the software module is implemented using a computer program product comprising a computer-readable medium containing computer program code, which is executable by a computer processor to perform any or all of the described steps, operations, or procedures.

[0155] The foregoing description of embodiments of this disclosure has been provided for purposes of illustration and description. The foregoing description is not exhaustive and is not intended to limit this disclosure to the exact form disclosed; various modifications and variations may be made in accordance with the foregoing teachings, or may be derived from practice of this disclosure. These embodiments were chosen and described to illustrate the principles of this disclosure and its practical application, enabling those skilled in the art to utilize this disclosure in various implementations and modifications suitable for the particular purpose conceived.

Claims

1. An excitation circuit, characterized in that, Applied to touch devices, including: Substrate; A first conductive component is disposed on the substrate and extends along a first direction; Multiple second conductive components are disposed on the substrate and extend along a second direction, and are respectively connected to the first conductive component to form a comb-like structure, wherein the first conductive component in the comb-like structure is the back of the comb and the multiple second conductive components are the teeth of the comb. Any two of the plurality of second conductive components support forming a closed-loop excitation coil with the first conductive component when the circuit is turned on, so as to emit an excitation signal for providing power to a touch accessory used in conjunction with the touch device.

2. The excitation circuit according to claim 1, characterized in that, Among the plurality of second conductive components, the second conductive component located at the non-comb edge is a metal mesh conductive component and / or a transparent conductive component.

3. The excitation circuit according to claim 1, characterized in that, The first conductive component and the second conductive component located at the edge of the comb teeth are solid metal conductive components.

4. The excitation circuit according to any one of claims 1-3, characterized in that, The first spacing between each adjacent second conductive component located at the non-comb edge is the same.

5. The excitation circuit according to claim 4, characterized in that, There is a second interval between the centers of each adjacent second conductive component located at the non-comb edge, and the second interval is within a preset interval threshold range.

6. The excitation circuit according to claim 1, characterized in that, The width of the second conductive component located at the non-comb edge in the first direction is less than or equal to the width threshold.

7. The excitation circuit according to claim 4, characterized in that, The first interval is equal to the width of the second conductive component in the first direction.

8. The excitation circuit according to claim 1, characterized in that, At least three of the plurality of second conductive components support the formation of a plurality of excitation coils with the first conductive component when the circuit is turned on.

9. The excitation circuit according to claim 1, characterized in that, The second conductive component includes a first end and a second end opposite to each other, the first end being connected to the first conductive component, and the excitation circuit includes: The input terminal is connected to the second terminal and is used to input a current signal to the second conductive component. The output terminal is connected to the second terminal and is used to connect the second terminal to a fixed level or to ground. A control circuit is connected to the input terminal, the output terminal and the second terminal respectively. The control circuit is used to control the conduction state between the second terminal and the input terminal, and also to control the conduction state between the second terminal and the output terminal. The first conductive component, the second conductive component connected to the input terminal, and the second conductive component connected to the output terminal form a closed-loop excitation coil.

10. The excitation circuit according to claim 1, characterized in that, The substrate is a transparent film.

11. A touch device, characterized in that, Includes the excitation circuit as described in any one of claims 1-10.

12. The touch device according to claim 11, characterized in that, include: The display area and the non-display area are defined as follows: the projection area of ​​the display area onto the substrate is the first projection area, the projection area of ​​the non-display area onto the substrate is the second projection area, the second conductive component located at the non-comb edge is located in the first projection area, and the first conductive component and the second conductive component located at the comb edge are located in the second projection area. The display panel includes a first side and a second side opposite to each other, wherein the first side is the side of the display panel where no image is displayed, and the second side is the side of the display panel where an image is displayed; A touch layer, disposed on the second side, is used to sense and receive touch data from the touch accessory. Wherein, the substrate is disposed between the touch layer and the display panel, or The substrate is disposed on the first side.

13. The touch device according to claim 12, characterized in that, The distance between the first conductive component and the edge of the first projection area in the second direction is greater than or equal to the second width threshold. The second conductive component located at the edge of the comb teeth is spaced from the edge of the first projection area in the first direction by a distance greater than or equal to the second width threshold.

14. The touch device according to claim 12, characterized in that, The second conductive component located at the non-comb edge has a minimum interval with the edge of the first projection area in the first direction, and the minimum interval is greater than a third width threshold.

15. The touch device according to claim 12, characterized in that, The second conductive component includes a second end that is not connected to the first conductive component, and the second end extends beyond the edge of the first projection area by a first distance in the second direction.

16. An electronic device, characterized in that, The electronic device includes: Memory, used to store instructions; and A processor is configured to invoke instructions stored in the memory to execute the excitation control method performed by the excitation circuit as described in any one of claims 1 to 10.

17. A computer-readable storage medium, characterized in that, The device stores instructions that, when executed by a processor, perform an excitation control method performed by the excitation circuit as described in any one of claims 1 to 10.

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