Touch pen point, touch pen and electronic equipment

Abstract

The embodiment of the utility model provides a touch pen point, a touch pen and electronic equipment, and aims to solve the problem that the position accuracy of the touch pen point detected by a display panel is low, in the touch pen point, a containing channel is defined by a shell, and a conductive pen point has a position signal; the detection electrode is arranged in the containing channel, one end of the detection electrode is arranged close to the tip end of the conductive pen point, and the detection electrode is configured to have a detection signal. During writing, the display panel receives the position signal and obtains the position of the conductive pen point according to the position signal; the display panel also receives the detection signal, obtains the included angle between the center line of the touch pen and the display panel according to the detection signal, and corrects the position of the conductive pen point according to the included angle so as to display the line at the corresponding position, thereby improving the accuracy of the detected position of the conductive pen point, and further improving the writing and drawing precision.

Description

Technical Field

[0001] This application relates to the field of terminal device technology, specifically to a stylus tip, a stylus, and an electronic device. Background Technology

[0002] Electronic devices with display panels are generally equipped with a stylus. By holding the stylus, the user can bring the stylus tip into contact with the display panel. The display panel detects the position of the stylus tip to display lines, enabling operations such as writing and drawing. However, the accuracy of the display panel in detecting the position of the stylus tip is relatively low, resulting in poor precision in writing and drawing. Utility Model Content

[0003] This application provides a stylus tip, a stylus, and an electronic device, which can improve the accuracy of the position of the stylus tip detected by the display panel.

[0004] In a first aspect, embodiments of this application provide a stylus tip, including: a housing, a conductive tip, and a detection electrode. The housing surrounds a receiving channel; the conductive tip is disposed at the tip of the housing, with a portion of the conductive tip located within the receiving channel, and the conductive tip is configured to have a position signal; the detection electrode is disposed in the receiving channel, spaced apart from the conductive tip, with one end of the detection electrode disposed close to the tip, and the detection electrode is configured to have a detection signal.

[0005] The stylus tip provided in this application embodiment, when writing, the display panel receives a position signal and obtains the position of the conductive tip based on the position signal; the display panel also receives a detection signal and obtains the angle between the center line of the stylus and the display panel based on the detection signal, and corrects the position of the conductive tip based on the angle to display lines at the corresponding positions, thereby improving the accuracy of the detected position of the conductive tip, and thus improving the writing and drawing accuracy.

[0006] In some embodiments that may include the above-described embodiments, the stylus tip further includes a circuit board, at least a portion of which is disposed within the receiving channel; the detection electrode includes a conductive tube, the centerline of which is parallel to the centerline of the receiving channel, one end of the circuit board extends into the conductive tube, and the conductive tube is connected to the circuit board. Since the detection electrode is disposed within the receiving channel, the distance between the detection electrode and the display panel is relatively large; therefore, one end of the conductive tube faces the tip of the outer casing, that is, one end of the conductive tube faces the display panel, to ensure that the display panel can receive the detection signal.

[0007] In some embodiments that may include the above-described embodiments, the stylus tip further includes a first insulating sleeve, which is sleeved on the circuit board and located between the conductive tube and the circuit board. The first insulating sleeve is connected to both the conductive tube and the circuit board. This configuration ensures a reliable connection between the conductive tube and the circuit board while achieving insulation between the conductive tube and the circuitry on the circuit board.

[0008] In some embodiments that may include the above-described embodiments, the stylus tip further includes a conductive element disposed between the circuit board and the first insulating sleeve. The conductive element is electrically connected to the circuit board, and a contact portion is provided on the surface of the conductive element facing the conductive tube. An opening is provided on the first insulating sleeve, exposing the contact portion, which is connected to the conductive tube. This configuration enables electrical connection between the circuit board and the conductive tube through the conductive element.

[0009] In some embodiments that may include the above-described examples, the circuit board may have a first line, which is electrically connected to a conductive element to send a detection signal to the conductive element. The conductive element may include a conductive sheet covering the surface of the circuit board; correspondingly, the contact portion may include a protrusion disposed on the side of the conductive sheet facing away from the circuit board, or a metal sheet attached to the side of the conductive sheet facing away from the circuit board. There may be two conductive elements, symmetrically or asymmetrically distributed on the upper and lower surfaces of the circuit board. Both conductive elements are electrically connected to the first line, and both conductive elements have contact portions. Correspondingly, the first insulating sleeve has two openings, each exposing one contact portion, so that both contact portions are connected to the conductive tube. Through the above arrangement, the stable transmission of the detection signal to the conductive tube can be ensured.

[0010] In some embodiments that may include the above-described examples, the stylus tip further includes a connector disposed within a conductive tube, spaced apart from the conductive tube. One end of the connector is electrically connected to the circuit board, and the other end is connected to the conductive stylus tip. Disposing the connector within the conductive tube reduces the space occupied by the connector in the accommodating channel, improving the structural compactness of the stylus tip and facilitating its miniaturization. It is understood that the connector needs to be insulated from the conductive tube to avoid interference between the position signal on the connector and the detection signal on the conductive tube.

[0011] In some embodiments that may include the above-described embodiments, the stylus tip further includes a second insulating sleeve, which is sleeved over the connector and connected to both the connector and the conductive tube. Through this arrangement, the second insulating sleeve can isolate the connector and the conductive tube, thereby preventing mutual interference between the detection signal and the position signal; on the other hand, the second insulating sleeve can also be used to fix the connector and the conductive tube.

[0012] In some embodiments that may include the above-described embodiments, a second line is provided on the circuit board, and the second line is electrically connected to the connector to send a position signal to the connector. It is understood that signal isolation is required between the first line and the second line that send the detection signal to the detection electrode to avoid mutual interference between the detection signal and the position signal.

[0013] In some implementations, a grounding line is also provided on the circuit board, which is located between the first line and the second line. The grounding line is configured to be grounded, thereby achieving signal isolation between the first line and the second line.

[0014] In some embodiments that may include the above-described embodiments, a first limiting portion is provided on the outer wall of the second insulating sleeve, and a second limiting portion is provided on the inner wall of the conductive tube. The first limiting portion abuts against the second limiting portion to prevent the second insulating sleeve from moving towards the tip. This arrangement facilitates the assembly and positioning between the conductive tube and the second insulating sleeve, and prevents the second insulating sleeve from moving axially within the conductive tube.

[0015] In some embodiments that may include the above-described examples, the connector includes a sliding sleeve, a spring, a conductive slider, and a conductive fixing block, all of which are disposed within the sliding sleeve. The conductive slider is located between the spring and the conductive pen tip. One end of the spring is connected to the conductive slider, and the spring is used to push against the conductive pen tip, so that the conductive slider and the conductive pen tip come into contact. The conductive fixing block is connected to the end of the circuit board facing the tip, and the other end of the spring is connected to the conductive fixing block. The conductive pen tip is electrically connected to the circuit board through the conductive slider, the spring, and the conductive fixing block. With this configuration, after assembly, the spring is in a compressed state within the sliding sleeve, and the spring force ensures good contact between the conductive slider and the conductive pen tip.

[0016] In some embodiments that may include the above-described examples, the outer shell is transparent, allowing the user to observe the conductive pen tip and conductive tube within the accommodating channel. This design enhances the decorative effect of the stylus tip. For example, the conductive tube may be made of metal, or a decorative layer may be provided on the outer wall of the conductive tube. This further enhances the decorative effect of the stylus tip. The material of the decorative layer may include ink or paint with specific colors and patterns; this application does not limit this aspect.

[0017] In the implementation of a stylus tip including an insulating layer, the insulating layer covers the outer shell. In this case, the insulating layer also needs to be made of a transparent material so that the user can observe the conductive tip and conductive tube through the insulating layer and the outer shell.

[0018] In some embodiments that may include the above embodiments, the cross-sectional area of ​​the outer shell and the conductive tube gradually decreases along the direction near the tip, forming a tapered shape, so that the shape of the stylus tip is closer to that of a real pen tip, thereby improving the decorative effect of the stylus tip.

[0019] In some embodiments that may include the above-described embodiments, the stylus tip further includes a fixing post with a fixing channel. At least a portion of the circuit board passes through the fixing channel and is connected to the fixing post. At least a portion of the fixing post passes through the receiving channel and is detachably connected to the housing. This configuration allows the circuit board to be fixed to the housing by the fixing post, and the detachable connection between the fixing post and the housing facilitates the installation and removal of the circuit board.

[0020] In some embodiments that may include the above-described examples, the outer wall of the fixing column is provided with an external connecting thread, and the side wall of the receiving channel is provided with an internal connecting thread, with the external connecting thread engaging with the internal connecting thread. This configuration allows the fixing column and the outer shell to be connected via a threaded connection, facilitating the installation and disassembly of the fixing column and the outer shell while ensuring connection strength.

[0021] In some embodiments that may include the above-described examples, a portion of the conductive tube extends into the fixed channel, and the end of the first insulating sleeve facing away from the tip is exposed outside the conductive tube. Correspondingly, a fixed sleeve may also be fitted over the end of the conductive tube facing away from the tip and the end of the first insulating sleeve facing away from the tip, and the fixed sleeve is connected to the conductive tube and the first insulating sleeve. This arrangement, with a portion of the conductive tube extending into the fixed channel, improves the conductive tube's resistance to bending. Furthermore, the fixed sleeve also secures the conductive tube and the first insulating sleeve to the fixed post, enhancing the stability of the conductive tube and the circuit board and preventing damage from a drop of the stylus tip.

[0022] In some embodiments that may include the above-described examples, the connector is mounted on the conductive tube via a second insulating sleeve, the conductive tube is mounted on the circuit board via a first insulating sleeve, and the conductive tube and the second insulating sleeve are also mounted on a fixing post via a fixing sleeve, which is mounted on the outer shell. This configuration simplifies the installation process and improves the fixation of the connector, conductive tube, and circuit board, enhancing the reliability of the stylus tip and preventing damage from drops. Furthermore, the first insulating sleeve restricts the position of the conductive tube, thereby improving its positional accuracy and preventing it from wobbling; similarly, the second insulating sleeve restricts the position of the connector, improving its positional accuracy and preventing it from wobbling.

[0023] Secondly, embodiments of this application also provide a stylus, including: a pen body and a stylus tip as described above, with one end of the pen body connected to the end of the outer shell away from the tip.

[0024] The stylus provided in this application includes the stylus tip in any of the above embodiments, and therefore can achieve the same technical effect and solve the same technical problem, which will not be repeated here.

[0025] Thirdly, embodiments of this application provide an electronic device, including: a display panel and a stylus as described above, the display panel including a touch structure configured to detect the position of the conductive tip of the stylus.

[0026] The electronic device provided in this application includes the stylus in any of the above embodiments, and therefore can achieve the same technical effect and solve the same technical problem, which will not be repeated here. Attached Figure Description

[0027] Figure 1 Schematic diagram of the structure of the electronic device provided in the embodiments of this application Figure 1 ;

[0028] Figure 2 Schematic diagram of the structure of the electronic device provided in the embodiments of this application Figure 2 ;

[0029] Figure 3 The axial side of the stylus tip provided in the embodiments of this application Figure 1 ;

[0030] Figure 4 for Figure 3 Sectional view along the middle AA direction;

[0031] Figure 5 A schematic diagram illustrating the use of a stylus to write on a display panel, as provided in an embodiment of this application.

[0032] Figure 6 for Figure 4 The diagram shows the assembly between the conductive tube in the stylus tip and the circuit board.

[0033] Figure 7 The axial side of the stylus tip provided in the embodiments of this application Figure 2 ;

[0034] Figure 8 for Figure 7 Sectional view along the BB direction;

[0035] Figure 9 for Figure 8 The diagram shows the connection between the conductive tube in the stylus tip and the circuit board.

[0036] Figure 10 This is a schematic diagram showing the connection between the conductive component in the stylus tip and the circuit board, provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1: Device body; 2: Stylus pen; 10: Pen body; 11: Display panel; 20: Stylus pen tip; 210: Conductive pen tip; 220: Outer shell; 221: Receiving channel; 222: Connecting internal thread; 240: Detection electrode; 241: Conductive tube; 242: First insulating sleeve; 243: Opening; 244: Second insulating sleeve; 245: First limiting part; 250: Circuit board; 251: Fixing post; 252: Fixing channel; 253: Connecting external thread; 254: Fixing sleeve; 255: Conductive component; 256: Contact part; 257: Second limiting part; 260: Connector; 261: Conductive slider; 262: Spring; 263: Sliding sleeve; 264: Third limiting part; 265: Conductive fixing block; 270: Insulating layer. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0040] Furthermore, in the embodiments of this application, directional terms such as "up," "down," "left," "right," "horizontal," and "vertical" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0041] In the embodiments of this application, the term "connection" or "linking" should be interpreted broadly. For example, "connection" can be a fixed connection, an electrical connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0042] Please refer to Figure 1 and Figure 2 This application provides an electronic device, which may include a mobile phone (such as...). Figure 1 As shown), tablet computers (such as...) Figure 2As shown in the figure, handheld readers (electronic books, abbreviated as E-BOOK), etc., the embodiments of this application do not limit the electronic devices.

[0043] Continue to refer to Figure 1 and Figure 2 The electronic device includes a device body 1, which may include a mid-frame, a motherboard, a battery, and a display panel 11. The motherboard and the battery are both mounted on the mid-frame. The battery is electrically connected to the motherboard to supply power to the motherboard. The display panel 11 covers the mid-frame and is electrically connected to the motherboard. The display panel 11 can display images under the control of the motherboard.

[0044] Continue to refer to Figure 1 and Figure 2 The electronic device also includes a stylus 2, which includes a pen body 10 and a stylus tip 20. The pen body 10 can be roughly cylindrical or prismatic. The stylus tip 20 is located at one end of the pen body 10. The stylus tip 20 is used to cooperate with the display panel 11 to realize touch, writing, drawing and other operations on the display panel 11.

[0045] In some implementations, the stylus 2 can be mounted on the device body 1. For example, a receiving hole or receiving slot can be provided on the mid-frame, and the stylus 2 can be mounted in the receiving hole or receiving slot to facilitate carrying the stylus 2. In other implementations, the stylus 2 can also be set separately from the device body 1, such as by magnetic adsorption, in order to achieve miniaturization of the device body 1.

[0046] Figure 3 The axial side of the stylus tip provided in the embodiments of this application Figure 1 , Figure 4 for Figure 3 For the sectional view along the AA direction, please refer to... Figure 3 and Figure 4 The stylus tip 20 includes a housing 220, and the housing 220 and the pen body 10 (e.g.) Figure 1 and Figure 2 One end of the pen body 10 is connected to the outer shell 220, which forms a receiving channel 221. The center line of the receiving channel 221 can be set approximately parallel to the center line of the pen body 10. The outer shell 220 can be connected to the pen body 10 by means of threaded connection or snap-fit, etc. This application embodiment does not limit this, as long as the fixation between the outer shell 220 and the pen body 10 can be achieved.

[0047] The stylus tip 20 also includes a conductive tip 210, which is disposed at the tip of the housing 220. Figure 3 and Figure 4(The lower end of the indicated position), the tip is the end of the housing 220 away from the pen body 10, the conductive pen tip 210 is used to contact the display panel 11, the conductive pen tip 210 is configured to have a position signal, the display panel 11 can receive the position signal, the device body 1 obtains the position of the conductive pen tip 210 on the display panel 11 according to the position signal, so that the display panel 11 displays lines at the corresponding position.

[0048] It is understood that the display panel 11 may include a touch structure. When writing, the conductive pen tip 210 contacts the display panel 11, and the touch structure receives the position signal, thereby obtaining the position of the display panel 11 corresponding to the tip of the conductive pen tip 210, so as to display lines at that position. For example, the touch structure may include a touch layer of the display panel 11 and a control chip. The touch layer is electrically connected to the control chip, which is used to control the display of the display panel 11 and can also realize touch control. When the conductive pen tip 210 contacts the display panel 11, the touch layer receives the position signal of the conductive pen tip 210 (for example, a capacitor is formed between the conductive pen tip 210 and the touch layer, and the position signal is transmitted through the capacitor), and sends the position signal to the control chip. The control chip determines the position of the conductive pen tip 210 according to the position signal and controls the display of lines at that position.

[0049] In the above implementation, the material of the conductive pen tip 210 may include copper, aluminum, iron, or their alloys. Of course, the material of the conductive pen tip 210 may also include non-metallic materials such as graphite, and this application embodiment does not limit this. The material of the outer shell 220 may include non-metallic materials such as plastic and rubber, and this application embodiment does not limit this.

[0050] Continue to refer to Figure 4 In some embodiments, the tip of the housing 220 is provided with a connection hole, which connects to the receiving channel 221. A portion of the conductive pen tip 210 passes through the connection hole, with the head of the conductive pen tip 210 being the tip of the housing 220 to contact the display panel 11, and the tail of the conductive pen tip 210 located within the receiving channel 221. For example, the cross-sectional area of ​​both the head and tail of the conductive pen tip 210 is larger than the cross-sectional area of ​​the connection hole, so that the conductive pen tip 210 is fixed to the housing 220 through the head and tail.

[0051] In some examples, the surface of the head of the conductive pen tip 210 can be spherical, that is, the head of the conductive pen tip 210 is shaped like the cap of a mushroom (mushroom head), which can improve the consistency of signal reception of the display panel 11 in all directions.

[0052] Continue to refer to Figure 3 and Figure 4In some implementations, the tip of the conductive pen tip 210 is wrapped with an insulating layer 270. For example, the material of the insulating layer 270 may include plastic, rubber, etc. The insulating layer needs to have a certain wear resistance to improve its service life; it can also be set with a certain degree of softness to improve the user's writing experience.

[0053] Continue to refer to Figure 3 and Figure 4 In this embodiment, the stylus tip 20 further includes a detection electrode 240, which is disposed within the receiving channel 221. One end of the detection electrode 240 is positioned near the tip of the housing 220, and the detection electrode 240 is configured to have a detection signal; the display panel 11 (e.g. Figure 1 and Figure 2 (As shown) is used to receive the detection signal and calculate the angle between the center line of the stylus 2 and the display panel 11 based on the detection signal, so as to correct the position of the conductive pen tip 210 based on the angle.

[0054] Figure 5 Please refer to the schematic diagram of the stylus writing on the display panel provided in the embodiments of this application. Figure 4 and Figure 5 For example, the touch layer of the display panel 11 can form a capacitor with the detection electrode 240, and the conductive pen tip 210 sends the detection signal to the touch layer through this capacitor. Since the vertical distance a between the detection electrode 240 and the display panel 11 is different when the angle A between the center line of the conductive pen tip 210 and the display panel 11 is different, the corresponding capacitance value between the detection electrode 240 and the touch layer is also different; therefore, the capacitance value corresponding to different angles can be predetermined. In use, after the control chip receives the detection signal, it can generate the capacitance value between the detection electrode 240 and the touch layer, and then obtain the corresponding angle based on the capacitance value.

[0055] In this embodiment, correcting the position of the conductive pen tip 210 based on the angle between the centerline of the conductive pen tip 210 and the display panel 11 may include: pre-determining correction values ​​corresponding to different angles, i.e., moving the position of the conductive pen tip 210 in a certain direction by a certain number of pixel unit widths under different angles to correct the position of the conductive pen tip 210. In use, the control chip first receives the position signal of the conductive pen tip 210 through the touch layer and generates the position of the conductive pen tip 210; the control chip receives the detection signal through the touch layer and generates the angle, and at the same time, moves the position of the conductive pen tip 210 in a certain direction by a corresponding number of pixel unit widths according to the angle to correct the position of the conductive pen tip 210.

[0056] Continue to refer to Figure 3 and Figure 4The stylus tip 20 provided in this embodiment has a housing 220 surrounding a receiving channel 221. A conductive tip 210 is disposed at the tip of the housing 220, with a portion of the conductive tip 210 located within the receiving channel 221. The conductive tip 210 has a position signal. A detection electrode 240 is disposed within the receiving channel 221, spaced apart from the conductive tip 210. One end of the detection electrode 240 is positioned close to the tip of the conductive tip 210, and the detection electrode 240 is configured to have a detection signal. During writing, the display panel 11 receives the position signal and obtains the position of the conductive tip 210 based on the position signal. The display panel 11 also receives the detection signal and obtains the angle between the center line of the stylus and the display panel 11 based on the detection signal. The position of the conductive tip 210 is corrected based on this angle to display lines at the corresponding positions, improving the accuracy of the detected conductive tip position and thus improving writing and drawing precision.

[0057] Continue to refer to Figure 4 and Figure 5 In this embodiment of the application, the stylus tip 20 also includes a circuit board 250. At least a portion of the circuit board 250 is disposed within the accommodating channel 221. The circuit board 250 can be electrically connected to both the conductive stylus tip 210 and the detection electrode 240 to send signals to the conductive stylus tip 210 and the detection electrode 240.

[0058] Figure 6 for Figure 4 Please refer to the assembly diagram of the conductive tube and circuit board in the stylus tip shown. Figure 4 and Figure 6 In some implementations, the detection electrode 240 includes a conductive tube 241, the centerline of which may be parallel to or coincide with the centerline of the stylus tip 20. One end of the circuit board 250 extends into the conductive tube 241 and forms a connection. For example, the connection between the conductive tube 241 and the circuit board 250 can be an electrical connection between the two, while the conductive tube 241 is also fixed to the circuit board 250.

[0059] It is understandable that, since the detection electrode 240 is located inside the receiving channel 221, the distance between the detection electrode 240 and the display panel 11 is relatively far; therefore, one end of the conductive tube 241 faces the tip of the outer casing 220, that is, faces the display panel 11, so as to ensure that the display panel can receive the detection signal.

[0060] For example, the material of the conductive tube 241 may include copper, aluminum, iron, or alloys thereof. Of course, the material of the conductive tube 241 may also include non-metallic materials such as graphite, and this application embodiment does not limit this.

[0061] Continue to refer to Figure 4In this embodiment, the outer shell 220 is transparent, meaning that the user can observe the conductive pen tip 210 and the conductive tube 241 within the accommodating channel 221 through the outer shell 220. This design enhances the decorative effect of the stylus tip 20. For example, a decorative layer can be provided on the outer wall of the conductive tube 241, further improving the decorative effect of the stylus tip 20. The material of the decorative layer may include ink or paint with specific colors and patterns; this embodiment does not limit this.

[0062] In the implementation of the stylus tip 20 including the insulating layer 270, the insulating layer 270 covers the outer shell 220. At this time, the insulating layer 270 also needs to be made of a transparent material so that the user can observe the conductive pen tip 210 and the conductive tube 241 through the insulating layer 270 and the outer shell 220, thereby improving the appearance experience.

[0063] In other embodiments, the outer shell 220 may also be a non-transparent shell, in which case the internal structure of the outer shell 220 cannot be observed from the outside.

[0064] In some implementations, the stylus can be configured with two stylus tips, one of which has a transparent shell 220 and the other has a non-transparent shell 220, which the user can switch between as needed.

[0065] Please refer to Figure 4 and Figure 6 In some examples, the conductive tube 241 may be cylindrical or prismatic.

[0066] Figure 7 The axial side of the stylus tip provided in the embodiments of this application Figure 2 , Figure 8 for Figure 7 Sectional view along the BB direction. Figure 9 for Figure 8 The diagram shown illustrates the connection between the conductive tube in the stylus tip and the circuit board. Please refer to the diagram. Figures 7-9 In other examples, the cross-sectional area of ​​the conductive tube 241 gradually decreases along the direction near the tip, that is, the conductive tube 241 is conical. With this setting, in the implementation of the outer shell 220 being a transparent shell, the shape of the conductive tube 241 is roughly the same as the shape of the outer shell 220, which can further enhance the decorative effect of the stylus tip 20.

[0067] Continue to refer to Figure 4 and Figure 8In some embodiments, the stylus tip 20 further includes a first insulating sleeve 242. The first insulating sleeve 242 is sleeved on the circuit board 250 and is located between and connected to both the conductive tube 241 and the circuit board 250; that is, the conductive tube 241 and the circuit board 250 are fixed together by the first insulating sleeve 242. With this arrangement, while ensuring a reliable connection between the conductive tube 241 and the circuit board 250, insulation isolation can be achieved between the conductive tube 241 and the circuit on the circuit board 250.

[0068] For example, the first insulating sleeve 242 can be connected to the circuit board 250 by injection molding; in addition, the first insulating sleeve 242 can be connected to the conductive tube 241 by interference fit or by adhesive. The first insulating sleeve 242 can be generally tubular.

[0069] In the above implementation, the material of the first insulating sleeve 242 may include insulating materials such as plastic and rubber, and this application embodiment does not limit this.

[0070] Continue to refer to Figure 4 and Figure 8 In some embodiments, the stylus tip 20 further includes a conductive element 255, which is disposed between the circuit board 250 and the first insulating sleeve 242. The conductive element 255 is electrically connected to the circuit board 250. A contact portion 256 is provided on the surface of the conductive element 255 facing the conductive tube 241. An opening 243 is provided on the first insulating sleeve 242, exposing the contact portion 256, which is connected to the conductive tube 241. This configuration enables an electrical connection between the circuit board 250 and the conductive tube 241 through the conductive element 255.

[0071] It is understood that the circuit board 250 may have a first line, which is electrically connected to the conductive element 255 to send a detection signal to the conductive element 255. For example, the conductive element 255 may be electrically connected to the first line by soldering or abutting. The contact portion 256 may be electrically connected to the conductive tube 241 by soldering or abutting.

[0072] Figure 10 Please refer to the schematic diagram of the connection between the conductive component in the stylus tip and the circuit board provided in the embodiments of this application. Figure 10 In some examples, the conductive element 255 may include a conductive sheet covering the surface of the circuit board 250; correspondingly, the contact portion 256 may include a protrusion disposed on the side of the conductive sheet opposite to the circuit board 250, or a metal sheet attached to the side of the conductive sheet opposite to the circuit board 250.

[0073] In some implementations, there can be two conductive elements 255, arranged symmetrically or asymmetrically on the upper and lower surfaces of the circuit board 250. Both conductive elements 255 are electrically connected to the first circuit and each has a contact portion 256. Correspondingly, the first insulating sleeve 242 has two openings 243, each opening 243 exposing one contact portion 256, so that both contact portions 256 are connected to the conductive tube 241. Through the above arrangement, the stable transmission of the detection signal to the conductive tube 241 can be guaranteed.

[0074] Continue to refer to Figure 4 and Figure 8 In this embodiment, the stylus tip 20 further includes a connector 260, one end of which is electrically connected to the circuit board 250, and the other end is connected to the conductive stylus tip 210. The conductive stylus tip 210 is electrically connected to the circuit board 250 through the connector 260 to receive position signals. The connector 260 is disposed inside the conductive tube 241, which can reduce the space occupied by the accommodating channel 221, improve the structural compactness of the stylus tip 20, and facilitate the miniaturization of the stylus tip 20.

[0075] In some implementations, a second line is provided on the circuit board 250, which is electrically connected to the connector 260 to send a position signal to the connector 260. It is understood that signal isolation is required between the first line and the second line that send the detection signal to the detection electrode 240 to avoid interference between the detection signal and the position signal. For example, a ground line is provided between the first line and the second line and configured to be grounded to achieve signal isolation between the first line and the second line.

[0076] In this embodiment, the stylus tip 20 further includes a second insulating sleeve 244, which is sleeved around the connector 260 and connected to both the connector 260 and the conductive tube 241. For example, the second insulating sleeve 244 may be generally tubular, and its connection to the connector 260 and the conductive tube 241 can be achieved through adhesive or interference fit. Through this configuration, the second insulating sleeve 244 can achieve insulation isolation between the connector 260 and the conductive tube 241, thereby avoiding mutual interference between the detection signal and the position signal.

[0077] For example, the material of the second insulating sleeve 244 may include insulating materials such as plastic and rubber, and this application embodiment does not limit this.

[0078] In some embodiments, an annular first limiting portion 245 is provided on the outer wall of the second insulating sleeve 244, and an annular second limiting portion 257 is provided on the inner wall of the conductive tube 241, with the first limiting portion 245 abutting against the second limiting portion 257. This arrangement allows for the assembly and positioning of the second insulating sleeve 244 and the conductive tube 241, while the barbs on the surface of the second insulating sleeve 244 prevent axial movement of the second insulating sleeve 244 within the conductive tube 241.

[0079] In one implementation, the surface of the first limiting part 245 facing the tip of the outer shell 220 and the surface of the second limiting part 257 facing away from the tip of the outer shell 220 can both be conical surfaces. With this configuration, the conical surface can play a self-aligning role, which can improve the assembly coaxiality between the second insulating sleeve 244 and the conductive tube 241.

[0080] In some implementations, there can be multiple first limiting parts 245, which are evenly arranged along the central axis of the second insulating sleeve 244. Correspondingly, there are multiple second limiting parts 257, which contact each of the first limiting parts 245 one by one.

[0081] Continue to refer to Figure 4 and Figure 8 In this embodiment, the connector 260 includes a sliding sleeve 263, a spring 262, a conductive slider 261, and a conductive fixing block 265. The spring 262, conductive slider 261, and conductive fixing block 265 are all disposed within the sliding sleeve 263. The conductive slider 261 is located between the spring 262 and the conductive pen tip 210. The spring 262 is in a compressed state and provides elastic force to cause the conductive slider 261 to abut against the conductive pen tip 210, thereby achieving an electrical connection.

[0082] In the above implementation, the sliding sleeve 263 has a contraction portion on the tip side facing the outer shell 220, and the conductive slider 261 has an abutment portion. The abutment portion abuts against the contraction portion to prevent the conductive slider 261 from falling from the sliding sleeve 263 to the tip side of the outer shell 220. At the same time, part of the conductive slider 261 extends out from the sliding sleeve 263 to abut against the conductive pen tip.

[0083] In the above embodiment, the other end of the spring 262 is connected to the conductive fixing block 265 so that the spring 262 is in a compressed state; the conductive fixing block 265 is connected to the side of the circuit board 250 facing the tip so as to realize the electrical connection between the conductive fixing block 265 and the circuit board 250, and the conductive pen tip 210 is electrically connected to the circuit board 250 through the conductive slider 261, the spring 262 and the conductive fixing block 265.

[0084] In some implementations, the end of the circuit board 250 facing the tip of the housing 220 is provided with a pad, the second line is electrically connected to the pad, and the conductive fixing block 265 can be soldered or abutted to the pad to realize the electrical connection between the conductive fixing block 265 and the second line.

[0085] In the implementation of the conductive pen tip 210 including the second insulating sleeve 244, the third limiting part 264 on the outer wall of the sliding sleeve 263 can abut against the side of the second insulating sleeve 244 away from the tip of the outer shell 220, thereby achieving assembly positioning and preventing the sliding sleeve 263 from moving toward the tip of the outer shell 220.

[0086] This application embodiment does not limit the connector 260. In other embodiments, the connector 260 may include a metal post. One end of the metal post abuts against the end of the circuit board 250 facing the tip of the housing 220, and the metal post is electrically connected to a second line on the circuit board 250. The other end of the metal post abuts against the conductive pen tip 210, and the second line can send a position signal to the conductive pen tip 210 through the metal post.

[0087] Continue to refer to Figure 4 and Figure 8 In this embodiment, the stylus tip 20 further includes a fixing post 251, on which a fixing channel 252 is provided. At least a portion of the circuit board 250 passes through the fixing channel 252 and is connected to the fixing post 251. At least a portion of the fixing post 251 passes through a receiving channel 221, and the fixing post 251 is detachably connected to the outer shell 220. For example, the outer wall of the fixing post 251 is provided with an external thread 253, and the inner wall of the receiving channel 221 is provided with an internal thread 222. The fixing post 251 and the outer shell 220 are fixed through threaded engagement. In other embodiments, the fixing post 251 and the outer shell 220 can also be connected by a snap-fit ​​mechanism. This configuration facilitates the installation and disassembly of the fixing post 251 and the outer shell 220 while ensuring connection strength.

[0088] In some examples, the stylus tip 20 also includes a retaining sleeve 254, which is fitted onto the circuit board 250 and located within the retaining channel 252. The circuit board 250 is connected to the retaining post 251 via the retaining sleeve 254. The retaining sleeve 254 can be connected to the circuit board 250 via injection molding, and the retaining sleeve 254 and the retaining post 251 can be connected via adhesive or interference fit to secure the retaining sleeve 254 to the retaining post 251 and the circuit board 250.

[0089] It is understandable that the fixing sleeve 254 can be an insulating tube, including insulating materials such as plastic and rubber, to achieve insulation isolation between the circuit on the circuit board 250 and the fixing post 251.

[0090] Continue to refer to Figure 4 and Figure 8 In some implementations, a portion of the conductive tube 241 extends into the fixed channel 252, and the side of the first insulating sleeve 242 facing away from the tip is exposed outside the conductive tube 241. Correspondingly, a fixed sleeve 254 can also be fitted onto the side of the conductive tube 241 facing away from the tip and the side of the first insulating sleeve 242 facing away from the tip, and the fixed sleeve 254 is connected to the conductive tube 241 and the first insulating sleeve 242. With this configuration, the portion of the conductive tube 241 extending into the fixed channel 252 can improve the bending resistance of the conductive tube 241, and the fixed sleeve 254 can also fix the conductive tube 241 and the first insulating sleeve 242 to the fixed post 251, improving the fixation of the conductive tube 241 and the circuit board 250 and preventing the stylus tip from falling and being damaged.

[0091] In the above implementation, connector 260 is mounted on conductive tube 241 via second insulating sleeve 244, conductive tube 241 is mounted on circuit board 250 via first insulating sleeve 242, and conductive tube 241 and second insulating sleeve 244 are also mounted on fixing post 251 via fixing sleeve 254. Fixing post 251 is mounted on housing 220. This configuration simplifies the installation process and improves the fixation of connector 260, conductive tube 241, and circuit board 250, thereby improving the reliability of the stylus tip and preventing damage from drops. Furthermore, the first insulating sleeve 242 restricts the position of conductive tube 241, improving its positional accuracy and preventing it from wobbling. Similarly, the second insulating sleeve 244 restricts the position of connector 260, improving its positional accuracy and preventing it from wobbling.

[0092] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A stylus tip, characterized in that, include: The outer casing, which encloses the passageway; A conductive pen tip is disposed at the tip of the outer casing, and a portion of the conductive pen tip is located within the receiving channel; The conductive pen tip is configured to have a position signal. A detection electrode is disposed in the receiving channel and spaced apart from the conductive pen tip. One end of the detection electrode is disposed close to the tip and is configured to have a detection signal.

2. The stylus tip according to claim 1, characterized in that, The stylus tip also includes a circuit board, at least a portion of which is disposed within the receiving channel; The detection electrode includes a conductive tube, the centerline of which is parallel to the centerline of the accommodating channel. One end of the circuit board extends into the conductive tube, and the conductive tube is connected to the circuit board.

3. The stylus tip according to claim 2, characterized in that, The stylus tip also includes a first insulating sleeve, which is sleeved on the circuit board and located between the conductive tube and the circuit board. The first insulating sleeve is connected to both the conductive tube and the circuit board.

4. The stylus tip according to claim 3, characterized in that, The stylus tip also includes a conductive element disposed between the circuit board and the first insulating sleeve. The conductive element is electrically connected to the circuit board. A contact portion is provided on the surface of the conductive element facing the conductive tube. An opening is provided on the first insulating sleeve, the opening exposing the contact portion, and the contact portion is connected to the conductive tube.

5. The stylus tip according to any one of claims 2-4, characterized in that, The stylus tip also includes a connector, which is disposed inside the conductive tube and spaced apart from the conductive tube. One end of the connector is electrically connected to the circuit board, and the other end of the connector is connected to the conductive stylus tip.

6. The stylus tip according to claim 5, characterized in that, The stylus tip also includes a second insulating sleeve, which is fitted over the connector and connected to both the connector and the conductive tube.

7. The stylus tip according to claim 6, characterized in that, A first limiting part is provided on the outer wall of the second insulating sleeve, and a second limiting part is provided on the inner wall of the conductive tube. The first limiting part abuts against the second limiting part to prevent the second insulating sleeve from moving toward the tip.

8. The stylus tip according to claim 5, characterized in that, The connector includes a sliding sleeve, a spring, a conductive slider, and a conductive fixing block. The spring, the conductive slider, and the conductive fixing block are all disposed inside the sliding sleeve. The conductive slider is located between the spring and the conductive pen tip. One end of the spring is connected to the conductive slider. The spring is used to push against the conductive slider against the conductive pen tip so that the conductive slider abuts against the conductive pen tip. The conductive fixing block is connected to one end of the circuit board facing the tip, and the other end of the spring is connected to the conductive fixing block. The conductive pen tip is electrically connected to the circuit board through the conductive slider, the spring, and the conductive fixing block.

9. The stylus tip according to any one of claims 2-4, characterized in that, The outer shell is a transparent shell, and the cross-sectional area of ​​the outer shell gradually decreases along the direction near the tip; the cross-sectional area of ​​the conductive tube also gradually decreases along the direction near the tip.

10. The stylus tip according to any one of claims 2-4, characterized in that, The stylus tip also includes a fixing post with a fixing channel. At least a portion of the circuit board passes through the fixing channel and is connected to the fixing post. At least a portion of the fixing post passes through the receiving channel and is detachably connected to the housing.

11. The stylus tip according to claim 10, characterized in that, The outer wall of the fixed column is provided with an external thread, and the side wall of the accommodating channel is provided with an internal thread, and the external thread and the internal thread are engaged.

12. A stylus, characterized in that, include: The pen body and the stylus tip according to any one of claims 1-11, wherein one end of the pen body is connected to the end of the outer casing opposite to the tip.

13. An electronic device, characterized in that, include: The display panel and the stylus of claim 12, the display panel including a touch structure configured to detect the position of the conductive tip of the stylus.

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