Capacitive pen and touch system

Abstract

The disclosure provides a capacitive pen and a touch control system, and relates to the technical field of touch control. The capacitive pen comprises a mounting frame, a main plate, a first electrode, a second electrode, a first conductive part and conductive glue. The main plate is assembled on the mounting frame. The first electrode is assembled on the mounting frame and extends along the length direction of the capacitive pen. The first electrode comprises a first end, a second end and a main body part between the first end and the second end. The first end is the pen tip of the capacitive pen, and the second end is electrically connected with the main plate. The second electrode is assembled on the mounting frame and is sleeved on the main body part of the first electrode. The second electrode is insulated from the first electrode. One end of the first conductive part is electrically connected with the second electrode through the conductive glue, and the other end is electrically connected with the main plate. The capacitive pen provided by the disclosure improves the internal space utilization.

Description

Technical Field

[0001] This disclosure relates to the field of stylus technology, and more specifically, to a capacitive stylus and a touch system. Background Technology

[0002] With the development of capacitive pens and the continuous changes in market demand, the demand for capacitive pens in education, business, painting and other fields is increasing. The demand for capacitive pens is becoming more diversified, the requirements for precision are higher, and the widespread application of multi-electrodes in capacitive pens has led to a more complex internal structure and a lower internal space utilization rate.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] The purpose of this disclosure is to provide a capacitive pen and touch system that improves the space utilization inside the capacitive pen.

[0005] According to one aspect of this disclosure, a capacitive pen is provided, the capacitive pen comprising: Mounting rack; A motherboard, which is mounted on the mounting bracket; A first electrode is mounted on the mounting bracket and extends along the length of the capacitive pen. The first electrode includes a first end, a second end, and a main body portion located between the first end and the second end. The first end is the tip of the capacitive pen, and the second end is electrically connected to the motherboard. The second electrode is mounted on the mounting bracket and sleeved on the main body of the first electrode, and the second electrode is insulated from the first electrode. A first conductive element and conductive adhesive, wherein one end of the first conductive element is electrically connected to the second electrode through the conductive adhesive, and the other end is electrically connected to the motherboard.

[0006] In one exemplary embodiment of this disclosure, the capacitive pen further includes: The third electrode is mounted on the mounting bracket and sleeved on the main body of the first electrode, and the third electrode is insulated from the first electrode. The conductive adhesive is located between the third electrode and the second electrode, and conducts electricity between the third electrode and the second electrode.

[0007] In one exemplary embodiment of this disclosure, at least a portion of the second electrode is sleeved on the third electrode along the length direction of the capacitive pen, and at least a portion of the conductive adhesive is located between the second electrode and the third electrode along the radial direction of the capacitive pen.

[0008] In one exemplary embodiment of this disclosure, the capacitive pen further includes: The third electrode is mounted on the mounting bracket and sleeved on the main body of the first electrode, and the third electrode is insulated from the first electrode and the second electrode. The second conductive element has one end electrically connected to the third electrode and the other end electrically connected to the motherboard.

[0009] In one exemplary embodiment of this disclosure, at least a portion of the mounting bracket is located between the third electrode and the second electrode along the radial direction of the capacitive pen.

[0010] In one exemplary embodiment of this disclosure, the capacitive pen further includes: An insulating sleeve is fitted onto the main body of the first electrode, and a third electrode is fitted onto the insulating sleeve, wherein the third electrode is insulated from the first electrode through the insulating sleeve.

[0011] In one exemplary embodiment of this disclosure, the third electrode is located between the first end of the first electrode and the second electrode along the length of the capacitive pen.

[0012] In one exemplary embodiment of this disclosure, the first conductive element is an elastic conductive element.

[0013] In one exemplary embodiment of this disclosure, the conductive adhesive is an elastic conductive material.

[0014] According to another aspect of this disclosure, a touch system is provided, the touch system comprising: An electronic device having a capacitive touchscreen; The aforementioned capacitive pen is used to interact with the capacitive touchscreen.

[0015] The capacitive pen disclosed herein provides a stable mounting carrier for the motherboard, first electrode, and second electrode, avoiding space waste caused by arbitrarily arranging components within the pen and improving space utilization. The first electrode extends along the length of the pen, with its first end serving as the pen tip and its second end directly electrically connected to the motherboard. This axially extended layout shortens the connection path between the first electrode and the motherboard. The second electrode is fitted onto the main body of the first electrode, employing a coaxial nested structure. This fully utilizes the annular space around the first electrode, preventing the second electrode from occupying independent axial space within the pen. This allows for a compact layout of the first and second electrodes within a limited space, further improving space utilization. A conductive adhesive seat carrier electrically connects one end of the first conductive element to the second electrode. Utilizing the high plasticity of the conductive adhesive, it better adapts to the space constraints within the pen. Even in the confined space of the pen, its structural adaptability allows for conductivity between the first conductive element and the second electrode without occupying additional space, further improving space utilization. This also ensures a stable and reliable connection between the first conductive element and the second electrode, addressing the issue of insufficient space within the pen.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 This is a partial cross-sectional schematic diagram of a capacitive pen provided in one embodiment of the present disclosure.

[0019] Figure 2 A partial cross-sectional schematic diagram of a capacitive pen provided for another embodiment of this disclosure.

[0020] Figure 3 This is a partial exploded view of a capacitive pen provided as an embodiment of the present disclosure.

[0021] Figure 4 This is a schematic diagram showing a partially opened capacitive pen according to an embodiment of the present disclosure.

[0022] Figure 5 This is a partially opened, exploded view of a capacitive pen provided as an embodiment of the present disclosure.

[0023] Explanation of reference numerals in the attached figures: 10. Mounting bracket; 110. Slide groove; 20. Main board; 31. First electrode; 311. First end; 312. Second end; 313. Main body; 314. Plastic sleeve; 315. Conductive sleeve; 3150. Limiting protrusion; 32. Second electrode; 33. Third electrode; 41. First conductive component; 42. Second conductive component; 50. Conductive adhesive; 60. Insulating sleeve; 70. Pressure sensor; 80. Elastic component; 810. Connecting part; 90. Controller; X, length direction. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0025] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0026] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0027] Embodiments of this disclosure provide a capacitive pen, such as Figures 1-5As shown, the capacitive pen includes a mounting bracket 10, a main board 20, a first electrode 31, a second electrode 32, a first conductive element 41, and conductive adhesive 50. The main board 20 is mounted on the mounting bracket 10. The first electrode 31 is mounted on the mounting bracket 10 and extends along the length direction X of the capacitive pen. The first electrode 31 includes a first end 311, a second end 312, and a main body portion 313 located between the first end 311 and the second end 312. The first end 311 is the tip of the capacitive pen, and the second end 312 is electrically connected to the main board 20. The second electrode 32 is mounted on the mounting bracket 10 and sleeved on the main body portion 313 of the first electrode 31. The second electrode 32 is insulated from the first electrode 31. One end of the first conductive element 41 is electrically connected to the second electrode 32 through the conductive adhesive 50, and the other end is electrically connected to the main board 20.

[0028] The capacitive pen provided in this disclosure has a mounting bracket 10 that provides a stable assembly carrier for the motherboard 20, the first electrode 31, and the second electrode 32, avoiding space waste caused by the arbitrary arrangement of components inside the capacitive pen and improving space utilization. The first electrode 31 extends along the length X of the capacitive pen, with its first end 311 serving as the pen tip and its second end 312 directly electrically connected to the motherboard 20. This axially extended layout shortens the connection path between the first electrode 31 and the motherboard 20. The second electrode 32 is fitted onto the main body 313 of the first electrode 31, adopting a coaxial nested structure. This fully utilizes the annular space around the first electrode 31 and avoids the second electrode 32 occupying independent axial space inside the capacitive pen, enabling the first electrode 31 and the second electrode 32 to achieve a compact layout within a limited space, further improving space utilization. The conductive adhesive 50 is used as a carrier to electrically connect one end of the first conductive element 41 to the second electrode 32. Utilizing the high plasticity of the conductive adhesive 50, it can better adapt to the space constraints inside the capacitive pen. In the case of limited space inside the capacitive pen, the adaptability of its own structure allows it to conduct electricity between the first conductive element 41 and the second electrode 32 without occupying extra space in the capacitive pen, further improving space utilization. It also enables the first conductive element 41 and the second electrode 32 to be stably and reliably connected together, thus improving the problem of insufficient space inside the capacitive pen.

[0029] In some embodiments, such as Figure 1As shown, the capacitive pen also includes a third electrode 33 and a second conductive element 42. The third electrode 33 is mounted on the mounting bracket 10 and sleeved on the main body 313 of the first electrode 31. The third electrode 33 is insulated from the first electrode 31 and the second electrode 32. One end of the second conductive element 42 is electrically connected to the third electrode 33, and the other end is electrically connected to the main board 20. In capacitive pen applications, multimodal functions (such as simultaneous positioning, pressure sensing, and tilt detection) have become an important direction of market demand. The first electrode 31, the second electrode 32, and the third electrode 33 are all insulated from each other and are independently electrically connected to the main board 20. That is, the first electrode 31, the second electrode 32, and the third electrode 33 can transmit / receive signals independently, thereby interacting independently with the capacitive touch screen. For example, the first electrode 31 can be used as a pen tip electrode, mainly for precise positioning and basic signal acquisition; the second electrode 32 can be used for auxiliary positioning or pressure detection; and the third electrode 33 can independently undertake other functions, such as signal acquisition for tilt angle detection. The three independent electrode channels can transmit different types of signals simultaneously without interfering with each other, enabling the capacitive pen to receive and process user operation information from multiple dimensions at the same time, thus achieving complex multimodal functions.

[0030] The first conductive element 41 can be an elastic conductive element, such as a spring wire; the second conductive element 42 can also be an elastic conductive element, for example, the same as the first conductive element 41, i.e., both are spring wires. Elastic conductive elements (such as spring wires) have good elastic deformation capabilities, and can compensate for dimensional deviations, assembly errors, and component displacements caused by temperature changes, vibrations, etc., during assembly or use. Specifically, during the assembly of the capacitive pen, due to limitations in the machining accuracy of components and assembly processes, there may be slight dimensional or positional deviations between the electrodes and the main board 20. The elastic conductive element can ensure good electrical contact between the two through its own elastic compression or stretching, and even if there is a certain deviation, it can be compensated for through elastic deformation. During the use of the capacitive pen, it may be affected by vibration, impact, or temperature changes, causing slight changes in the relative position between the electrodes and the main board 20; the elastic properties of the elastic conductive element can absorb the stress caused by these changes, maintaining stable contact with the connection points of the electrodes and the main board 20, ensuring the continuity and stability of signal transmission. Of course, the first conductive element 41 and the second conductive element 42 can also be non-elastic conductive elements, such as ordinary wires, and this disclosure does not limit them.

[0031] At least a portion of the mounting bracket 10 is located between the third electrode 33 and the second electrode 32. The mounting bracket 10, made of an insulating material (such as plastic), provides excellent electrical insulation, effectively blocking the electric field coupling path between the third electrode 33 and the second electrode 32 and reducing parasitic capacitance. The physical isolation provided by the mounting bracket 10 significantly increases the electrical distance between the third electrode 33 and the second electrode 32, spatially cutting off the main propagation path of signal crosstalk and effectively reducing signal interference between them. Simultaneously, the portion of the mounting bracket 10 located between the two electrodes provides radial restraint and support for the third electrode 33 and the second electrode 32, limiting excessive radial movement and preventing deformation or displacement due to external forces. The mounting bracket 10 integrates electrode support, isolation, and spatial separation functions, avoiding the need for separate isolation or support components and thus improving space utilization.

[0032] In some embodiments, such as Figure 2 As shown, the capacitive pen also includes a third electrode 33, which is mounted on the mounting bracket 10 and sleeved on the main body 313 of the first electrode 31. The third electrode 33 is insulated from the first electrode 31. Conductive adhesive 50 is located between the third electrode 33 and the second electrode 32, and conducts electricity between them. After the third electrode 33 is connected to the second electrode 32 via the conductive adhesive 50, the second electrode 32 and the third electrode 33 are combined into a single large electrode, increasing the electrode area and thus improving the signal strength conducted by the electrode. Furthermore, the connection between the third electrode 33 and the second electrode 32 via the conductive adhesive 50 simplifies the connection structure between the second electrode 32 and the third electrode 33, eliminating the need for complex mechanical connections or additional wire connections, thus reducing assembly difficulty and production costs. The connection method of the conductive adhesive 50 is more flexible, better adapting to the curved shape and spatial layout of the electrodes, improving the reliability and stability of multi-electrode connections.

[0033] In this design, at least a portion of the second electrode 32 is fitted onto the third electrode 33 along the length X of the capacitive pen, and at least a portion of the conductive adhesive 50 is located radially between the second electrode 32 and the third electrode 33. The conductive adhesive 50 fills the space between the second electrode 32 and the third electrode 33 radially, fully utilizing the annular gap between the two electrodes and avoiding wasted radial space. The radially filled conductive adhesive 50 generates a certain clamping force on the second electrode 32 and the third electrode 33 in the radial direction, restricting the relative movement of the two electrodes in the radial direction. This allows the conductive adhesive 50 to adhere tightly to the inner and outer walls of the two electrodes, increasing the contact area, further reducing contact resistance, and improving the reliability of the electrical connection. Simultaneously, the radially filled conductive adhesive 50 also serves a radial positioning and support function, preventing the second electrode 32 and the third electrode 33 from shifting in the radial direction, ensuring stable relative positions between the electrodes, and contributing to the stability of signal acquisition and transmission.

[0034] In some embodiments, the conductive adhesive 50 is an elastic conductive material. The elastic conductive material has good elastic deformation capability, allowing it to tightly adhere to the connection surfaces of the second electrode 32 and the first conductive element 41, or the third electrode 33 and the second electrode 32 during assembly. Even if there are minor unevenness or dimensional deviations on the connection surfaces, its elastic deformation can fill and compensate for these imperfections, ensuring a tight contact between the conductive adhesive 50 and the connection surfaces and preventing a decrease in conductivity due to contact gaps. Simultaneously, when the capacitive pen is subjected to external impacts such as accidental drops or collisions, relative vibrations and impact forces will occur between the electrodes. The elastic properties of the conductive adhesive 50 can absorb some of the impact force and vibration energy, mitigating the impact force between the electrodes and preventing deformation, damage, or loosening of the electrodes due to severe impacts.

[0035] Among them, such as Figures 3-5 As shown, the conductive adhesive 50 can be a pre-fabricated independent structural component, such as a conductive silicone block. During assembly, the conductive adhesive 50 is fixed between the second electrode 32 and the mounting bracket 10 by extrusion or self-adhesive bonding, with the second electrode 32 and the mounting bracket 10 forming a compression fixation of the elastic conductive adhesive 50. One end of the first conductive element 41 can be injection molded into the conductive adhesive 50, or one end of the first conductive element 41 can be extruded and fixed between the conductive adhesive 50 and the first electrode 31, or extruded and fixed between the conductive adhesive 50 and the mounting bracket 10. Alternatively, the conductive adhesive 50 can be directly coated onto the first electrode 31 and cured. It should be noted that the conductive adhesive 50 can be a conductive silicone block, other adhesives with conductive properties, or a composite adhesive that achieves conductivity by doping with conductive materials; this disclosure does not impose any limitations on this.

[0036] Among them, such as Figure 2As shown, when the conductive adhesive 50 simultaneously conducts electricity between the second electrode 32 and the third electrode 33, at least a portion of the pre-formed block-shaped conductive adhesive 50 can extend between the second electrode 32 and the third electrode 33, and be fixed by the compression of the second electrode 32 and the third electrode 33, thereby achieving conductivity between the second electrode 32 and the third electrode 33. Alternatively, the conductive adhesive 50 can be directly coated between the second electrode 32 and the third electrode 33 and formed after curing.

[0037] In some embodiments, such as Figure 1 and Figure 2 As shown, in the length direction X of the capacitive pen, the third electrode 33 is located between the first end 311 of the first electrode 31 and the second electrode 32. Positioning the third electrode 33 between the pen tip and the second electrode 32 creates a compact layout of the three electrodes in the length direction X of the capacitive pen. This shortens the overall length of the assembled three electrodes, providing more axial space for other internal components of the pen. Alternatively, it allows for a shorter overall length of the pen without affecting the installation of other components, improving user comfort and portability. Furthermore, during operation, the third electrode 33, located closer to the pen tip than the second electrode 32, can more accurately detect changes in the electric field, reducing the time delay from signal generation to acquisition and enhancing the user experience.

[0038] In some embodiments, such as Figures 1-5 As shown, the capacitive stylus also includes a plastic sleeve 314, which wraps around the first end 311 of the first electrode 31. The capacitive stylus performs touch control through the plastic sleeve 314. The first electrode 31 is mostly made of metal. Although the tempered glass on the touchscreen surface has a certain degree of hardness, long-term contact with metal can easily cause minor scratches. Especially when the capacitive stylus is used at an angle, the sharp angle of the electrode edge may cause screen damage. The soft texture of the plastic sleeve 314 can greatly reduce contact wear. The elasticity of the plastic sleeve 314 can buffer the impact force during touch control, preventing the metal electrode from directly hitting the screen surface and protecting the integrity of the screen's appearance.

[0039] In some embodiments, such as Figures 1-3As shown, the capacitive pen also includes an insulating sleeve 60, which is fitted onto the main body 313 of the first electrode 31. The third electrode 33 is fitted onto the insulating sleeve 60, and the third electrode 33 is insulated from the first electrode 31 by the insulating sleeve 60. The insulating sleeve 60 is made of insulating material (such as polytetrafluoroethylene, epoxy resin, or other plastic materials), possessing excellent electrical insulation properties, high-temperature resistance, and aging resistance, maintaining stable insulation performance during long-term use. The tight fit between the insulating sleeve 60 and the main body 313 of the first electrode 31 forms a complete insulating layer, effectively blocking the current path between the third electrode 33 and the first electrode 31, avoiding leakage, short circuits, and other problems caused by insulation failure. After the insulating sleeve 60 is fitted onto the main body 313 of the first electrode 31, its outer surface can serve as a positioning surface for assembling the third electrode 33. The third electrode 33 can be precisely assembled along the outer surface of the insulating sleeve 60, ensuring the coaxiality and relative positional accuracy between the third electrode 33 and the first electrode 31.

[0040] In some embodiments, such as Figures 1-4 As shown, the capacitive pen also includes a pressure sensor 70 and an elastic element 80. The pressure sensor 70 is mounted on the mounting bracket 10 at a position corresponding to the second end 312 and is electrically connected to the motherboard 20. The first electrode 31 is movably connected to the mounting bracket 10 along the length direction X of the capacitive pen, and the elastic element 80 is provided between the second end 312 of the first electrode 31 and the mounting bracket 10. The second end 312 of the first electrode 31 is in elastic contact with the pressure sensor 70 along the length direction X of the capacitive pen through the elastic element 80. When the first end 311 of the first electrode 31 is pressed, it moves towards the pressure sensor 70 relative to the mounting bracket 10, and the second end 312 of the first electrode 31 squeezes the pressure sensor 70. The pressure sensor 70 outputs corresponding pressure information, and the motherboard 20 determines the pressure of the pen tip on the capacitive touch screen based on the pressure information output by the pressure sensor 70.

[0041] The insulating sleeve 60 is sleeved on the main body 313 of the first electrode 31. The first electrode 31 can extend and retract relative to the insulating sleeve 60 along the length direction X of the capacitive pen so that the tip of the capacitive pen can extend and retract.

[0042] One end of the elastic element 80 is electrically connected to the motherboard 20, and the other end is electrically connected to the first electrode 31; the first electrode 31 is electrically connected to the motherboard 20 through the elastic element 80. The elastic element 80 achieves both conductivity and reset functions for the first electrode 31, reducing the number of components in the capacitive pen, thereby reducing the space occupied and improving the space utilization of the capacitive pen. For example, Figure 3 As shown, the elastic element 80 can be a spring, and the spring can be provided with a connecting part 810 extending along the length direction X. The spring is electrically connected to the main board 20 through the connecting part 810.

[0043] Among them, such as Figures 1-3 As shown, the second end 312 of the first electrode 31 is provided with a conductive sleeve 315, and the elastic element 80 is disposed on the conductive sleeve 315. The second end 312 of the first electrode 31 is electrically connected to the elastic element 80 through the conductive sleeve 315. Under the action of the first electrode 31, the conductive sleeve 315 elastically contacts the pressure sensor 70 through the elastic element 80. The conductive sleeve 315 can serve as a mounting carrier for the elastic element 80, and at the same time, it can conduct electricity between the first electrode 31 and the elastic element 80, thereby connecting the first electrode 31 to the main board 20.

[0044] Among them, such as Figures 1-3 As shown, the mounting bracket 10 has a groove 110 extending along the length X of the capacitive pen, and the conductive sleeve 315 is located in the groove 110. A limiting protrusion 3150 is provided at one end of the conductive sleeve 315 near the pressure sensor 70. An elastic element 80 is fitted onto the conductive sleeve 315, with one end of the elastic element 80 abutting against the side of the limiting protrusion 3150 away from the pressure sensor 70, and the other end abutting against the groove wall of the groove 110 at the end away from the pressure sensor 70. The elastic element 80 can apply a preset elastic force along the length X of the conductive sleeve 315 near the pressure sensor 70, so that the conductive sleeve 315 has a pre-pressure on the pressure sensor 70, thereby ensuring tight contact between the end of the conductive sleeve 315 and the pressure sensor 70, improving pressure detection accuracy. When the tip of the capacitive pen is pressed, the first electrode 31 drives the conductive sleeve 315 to press against the pressure sensor 70, and the pressure sensor 70 outputs a pressure signal. When the pressure on the pen tip disappears, the conductive sleeve 315 returns to its initial position under the reset action of the pressure sensor 70. At this time, the pressure sensor 70 is subjected to the pre-pressure provided by the elastic element 80 by the conductive sleeve 315. The difference between the pressure value detected by the pressure sensor 70 and the pre-pressure can be used as a basis for judging the amount of pressure on the pen tip. It should be noted that the above-described relationship between the pressure transmission and detection between the first electrode 31 and the pressure sensor 70 is only an illustrative example, and this disclosure does not limit it.

[0045] In some embodiments, such as Figure 4 and Figure 5 As shown, the capacitive pen also includes a controller 90, which is disposed on the pen body and configured to enable / disable the capacitive pen and / or set its function modes.

[0046] The controller 90 can be equipped with multiple buttons, which are used to turn the capacitive pen on and off and / or set the function mode.

[0047] Embodiments of this disclosure also provide a touch system, which includes an electronic device and the capacitive pen provided in the above embodiments. The electronic device has a capacitive touchscreen, and the capacitive pen is used to interact with the capacitive touchscreen. The electronic device may be, for example, a tablet computer, laptop computer, mobile phone, television, e-reader, electronic drawing board, or other device with a capacitive touchscreen. Users can use the capacitive pen to perform operations such as using apps, document editing, PPT creation, real-time writing, and drawing on electronic devices with capacitive touchscreens.

[0048] The capacitive pen, through its multi-electrode structure, reliable conductive connection, and optimized signal transmission design, can accurately acquire user operation signals (such as pen tip position, pressure level, tilt angle, etc.) and transmit these signals precisely to the motherboard 20 for processing. The processed signals are then sent to the electronic device wirelessly or via wired connection. The capacitive touchscreen of the electronic device receives and identifies the signals sent by the capacitive pen through its own touch detection system (such as a sensing electrode array and signal processing chip), enabling precise responses to user operations.

[0049] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A capacitive pen, characterized in that, include: Mounting bracket (10); A motherboard (20) is mounted on the mounting bracket (10); The first electrode (31) is mounted on the mounting bracket (10) and extends along the length direction (X) of the capacitive pen. The first electrode (31) includes a first end (311), a second end (312), and a main body portion (313) located between the first end (311) and the second end (312). The first end (311) is the tip of the capacitive pen, and the second end (312) is electrically connected to the main board (20). The second electrode (32) is mounted on the mounting bracket (10) and sleeved on the main body part (313) of the first electrode (31). The second electrode (32) is insulated from the first electrode (31). The first conductive element (41) and the conductive adhesive (50) are connected. One end of the first conductive element (41) is electrically connected to the second electrode (32) through the conductive adhesive (50), and the other end is electrically connected to the motherboard (20).

2. The capacitive pen according to claim 1, characterized in that, The capacitive pen also includes: The third electrode (33) is mounted on the mounting bracket (10) and sleeved on the main body (313) of the first electrode (31). The third electrode (33) is insulated from the first electrode (31). The conductive adhesive (50) is located between the third electrode (33) and the second electrode (32), and conducts electricity between the third electrode (33) and the second electrode (32).

3. The capacitive pen according to claim 2, characterized in that, Along the length direction (X) of the capacitive pen, at least a portion of the second electrode (32) is fitted onto the third electrode (33), and at least a portion of the conductive adhesive (50) is located radially between the second electrode (32) and the third electrode (33) of the capacitive pen.

4. The capacitive pen according to claim 1, characterized in that, The capacitive pen also includes: The third electrode (33) is mounted on the mounting bracket (10) and sleeved on the main body (313) of the first electrode (31). The third electrode (33) is insulated from the first electrode (31) and the second electrode (32). The second conductive element (42) has one end electrically connected to the third electrode (33) and the other end electrically connected to the motherboard (20).

5. The capacitive pen according to claim 4, characterized in that, Along the radial direction of the capacitive pen, at least a portion of the mounting bracket (10) is located between the third electrode (33) and the second electrode (32).

6. The capacitive pen according to any one of claims 2 to 5, characterized in that, The capacitive pen also includes: An insulating sleeve (60) is sleeved on the main body (313) of the first electrode (31), and the third electrode (33) is sleeved on the insulating sleeve (60). The third electrode (33) is insulated from the first electrode (31) through the insulating sleeve (60).

7. The capacitive pen according to any one of claims 2 to 5, characterized in that, Along the length direction (X) of the capacitive pen, the third electrode (33) is located between the first end (311) of the first electrode (31) and the second electrode (32).

8. The capacitive pen according to any one of claims 1 to 5, characterized in that, The first conductive element (41) is an elastic conductive element.

9. The capacitive pen according to any one of claims 1 to 5, characterized in that, The conductive adhesive (50) is an elastic conductive material.

10. A touch system, characterized in that, include: An electronic device having a capacitive touchscreen; The capacitive pen according to any one of claims 1 to 9, wherein the capacitive pen is used to interact with the capacitive touch screen.

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