Pen tip of touch pen, touch pen and pen tip design method of touch pen

Abstract

The invention relates to the technical field of touch pens, and discloses a pen point of a touch pen, the touch pen and a pen point design method of the touch pen, and the pen point of the touch pen comprises a connecting part and a contact part; one end of the connecting part is connected with the penholder of the stylus, and the other end is connected with the contact part; the contact part protrudes towards the side away from the connecting part to form a spherical surface making contact with the touch screen, the contact part is of a non-hemispherical structure, the curvature diameter of the spherical surface is determined based on a preset semaphore, and the preset semaphore is the semaphore needed when the touch screen responds to touch control of the pen point. Under the condition that the size of the pen point is reduced, the original semaphore is kept by increasing the curvature diameter, the problem that the semaphore is reduced due to reduction of the size of the pen point is avoided, touch control debugging is more convenient, and the touch control precision and the use experience of a user are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of styluses, and particularly to a nib of a stylus, a stylus, and a method for designing the nib of a stylus. Background Art

[0002] Due to reasons such as simple process, long service life, and high light transmittance, capacitive touch screen technology has become the current mainstream touch screen technology. A capacitive touch screen works by using the current induction of the human body. A capacitive touch screen is formed by plating a transparent metal electrode pattern on the surface of a substrate. When a finger touches or approaches the metal electrode pattern, due to the human body electric field, a coupling capacitance is formed between the user and the surface of the capacitive touch screen, causing the electrostatic capacitance of the electrode at the touch point on the capacitive touch screen to change, and further causing the voltage or current of the electrode to change. Then, by comparing the voltage differences of adjacent electrodes, the position of the touch point is determined.

[0003] In the case of frequent touching or writing, in order to avoid the problem of finger abrasion caused by long-term finger touching for drawing lines, interactive devices with touch screens usually configure a stylus. Generally, the stylus is provided with a conductive nib (tip) at the front edge of the pen body containing a conductive material, and an electrical signal is transmitted to the interactive device through the nib to determine the position of the touch point. With the development of the stylus, in order to meet the requirements of continuously improving touch accuracy, it is necessary to match a nib with a smaller size. However, the nibs in related technologies are generally hemispherical structures. When the size of the nib is reduced, the signal amount of capacitive touch will be reduced, making it more difficult to debug the touch effect. Summary of the Invention

[0004] In view of this, the present invention provides a nib of a stylus, a stylus, and a method for designing the nib of a stylus to solve the problem of reduced signal amount of capacitive touch caused by the reduction of the nib size.

[0005] In a first aspect, the present invention provides a nib of a stylus. The nib includes a connecting portion and a contacting portion. One end of the connecting portion is connected to the pen shaft of the stylus, and the other end is connected to the contacting portion. The contacting portion protrudes toward the side away from the connecting portion to form a spherical surface in contact with the touch screen, and the contacting portion has a non-hemispherical structure. Among them, the curvature diameter of the spherical surface is determined based on a preset signal amount, and the preset signal amount is the signal amount required for the touch screen to respond to the touch of the nib.

[0006] In this embodiment, the contact portion of the pen tip is set to a non-hemispherical structure. The contact portion protrudes toward the side away from the connection portion to form a spherical surface, and the curvature diameter of the spherical surface is determined based on a preset signal amount. It can, while reducing the size of the pen tip, maintain the original signal amount of the contact portion by increasing the curvature diameter, avoiding the problem of signal amount decline caused by the reduction of the pen tip size, making it more convenient for touch debugging, avoiding touch anomalies (such as jump points or disconnection, etc.) caused by insufficient signal-to-noise ratio, and improving touch accuracy and the user experience.

[0007] In an alternative embodiment, the curvature diameter of the spherical surface is less than or equal to the maximum curvature diameter, and the maximum curvature diameter is determined according to the diameter of the first surface and the first included angle; wherein, the first surface is the surface of the contact portion for connecting to the connection portion, and the first included angle is the minimum included angle between the contact portion and the touch screen.

[0008] In this embodiment, by determining the maximum curvature diameter, designers can conveniently understand the maximum curvature diameter under the corresponding diameter, thereby being able to determine the maximum signal amount of the contact portion under the corresponding diameter, and then more conveniently and accurately determine the diameter of the first surface of the contact portion.

[0009] In an alternative embodiment, the value range of the first included angle is from 5 degrees to 45 degrees.

[0010] In this embodiment, by limiting the value range of the first included angle between 5 degrees and 45 degrees, it can not only avoid the situation where the signal amount is small due to too small first included angle, but also avoid the situation where the contact position between the pen tip and the touch screen is on the transition joint surface and the contact point is not an arc surface, affecting the user's writing experience, thus taking into account both the signal amount and the user experience.

[0011] In an alternative embodiment, the diameter of the first surface is 3 mm, and the value range of the maximum curvature diameter is from 3.01 mm to 4.24 mm.

[0012] In this embodiment, when the diameter of the first surface is 3 mm, limiting the value range of the maximum curvature diameter between 3.01 mm and 4.24 mm can take into account both the signal amount and the user experience.

[0013] In an alternative embodiment, the connection portion has a conical structure or a cylindrical structure.

[0014] In this embodiment, setting the connection portion to a conical structure can improve the aesthetic appearance of the stylus. Setting the connection portion to a cylindrical structure can reduce the processing difficulty and improve the processing efficiency.

[0015] In an alternative embodiment, the connecting portion has a cylindrical structure, and the diameter of the first surface is greater than the diameter of the surface of the connecting portion that is connected to the contact portion.

[0016] In this embodiment, making the diameter of the first surface greater than the diameter of the surface of the connecting portion that is connected to the contact portion can ensure the reliability of the connection.

[0017] In an alternative embodiment, the connecting portion and the contact portion are integrally formed structures.

[0018] In this embodiment, setting the connecting portion and the contact portion as integrally formed structures can simplify the manufacturing process of the pen tip and reduce the production cost.

[0019] In a second aspect, the present invention provides a stylus, comprising: a pen barrel and the pen tip according to the first aspect or any corresponding embodiment thereof; the pen barrel for a user to hold; the pen tip connected to the pen barrel through a connecting portion.

[0020] In an alternative embodiment, the stylus is a passive capacitive pen.

[0021] In a third aspect, the present invention provides a method for designing a pen tip of a stylus, the method comprising: obtaining a preset signal amount, wherein the preset signal amount is the signal amount required for the touch screen to respond to the touch of the pen tip; determining a curvature diameter based on the preset signal amount; constructing a model of a connecting portion, wherein one end of the connecting portion is connected to the pen barrel of the stylus; and constructing a model of a contact portion for contacting the touch screen on the connecting portion according to the curvature diameter to form a model of the pen tip of the stylus; wherein the contact portion protrudes away from the connecting portion to form a spherical surface for contacting the touch screen, and the contact portion has a non-hemispherical structure.

[0022] In a fourth aspect, the present invention provides a device for designing a pen tip of a stylus, the device comprising: an obtaining module for obtaining a preset signal amount, wherein the preset signal amount is the signal amount required for the touch screen to respond to the touch of the pen tip; a first determining module for determining a curvature diameter based on the preset signal amount; a first designing module for constructing a model of a connecting portion, wherein one end of the connecting portion is connected to the pen barrel of the stylus; and a second designing module for constructing a model of a contact portion for contacting the touch screen on the connecting portion according to the curvature diameter to form a model of the pen tip of the stylus; wherein the contact portion protrudes away from the connecting portion to form a spherical surface for contacting the touch screen, and the contact portion has a non-hemispherical structure.

[0023] Fifth aspect, the present invention provides a computer device, comprising: a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the method according to the third aspect or any corresponding embodiment thereof.

[0024] Sixth aspect, the present invention provides a computer-readable storage medium, on which computer instructions are stored. The computer instructions are used to cause a computer to execute the method according to the third aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1a is a schematic diagram of a capacitive touch screen according to an embodiment of the present invention;

[0027] Figure 1b is a schematic diagram of a stylus in contact with a capacitive touch screen according to an embodiment of the present invention;

[0028] Figure 2a is a schematic structural diagram of a stylus;

[0029] Figure 2b is Figure 2a a partial enlarged schematic diagram of area A in

[0030] Figure 3 is a schematic structural diagram of another stylus;

[0031] Figure 4 is a schematic structural diagram of a stylus according to an embodiment of the present invention;

[0032] Figure 5 is Figure 4 a partial enlarged schematic diagram of area B in

[0033] Figure 6 is a schematic diagram of a curve showing the change of the signal amount of the contact part under different curvature diameters according to an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the signal amount of the contact part under different curvature diameters according to an embodiment of the present invention;

[0035] Figure 8Schematic structural diagram of another stylus according to an embodiment of the present invention;

[0036] Figure 9 Schematic diagram for determining the maximum curvature diameter according to an embodiment of the present invention;

[0037] Figure 10 Schematic flowchart of a method for designing the nib of a stylus according to an embodiment of the present invention;

[0038] Figure 11 Schematic block diagram of a device for designing the nib of a stylus according to an embodiment of the present invention;

[0039] Figure 12 Schematic hardware structure diagram of a computer device according to an embodiment of the present invention.

[0040] Reference numerals: 110, transmitting electrode driving circuit; 120, receiving electrode sensing circuit; 130, control circuit; 200, stylus; 210, nib; 211, connecting portion; 212, contact portion; 220, pen barrel. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] As an input medium, the touch screen is a relatively simple and convenient human-computer interaction method at present and is widely used in various electronic devices, such as interactive touch all-in-one devices, mobile phones, tablets, or computers. According to the working principle and the medium for transmitting information, touch screens are generally classified into four types: resistive, capacitive, infrared, and surface acoustic wave. Among them, capacitive touch screen technology has become the current mainstream touch screen technology due to reasons such as simple process, long service life, and high light transmittance.

[0043] When users frequently interact with the touch screen with their fingers, it is easy to cause finger abrasions, affecting the user experience. For example, in application scenarios such as discussing issues in meetings, teachers writing on the blackboard during teaching, marking papers, or playing parent-child games (connect the dots) at home, users need to frequently draw lines or write on the screen. In related technologies, to ensure that users can clearly identify the images displayed on the touch screen from all angles, the outer surface of the entire display screen is usually anti-glare (AG) or paper-like treated, making the touch surface rougher. If users write on the touch surface with their fingers for a long time, it is easy to cause finger abrasions. Therefore, interactive touch devices are usually matched with a stylus (writing pen), which is used for writing to avoid damage to the user's fingers and improve the user experience.

[0044] For capacitive touch devices, the matching stylus is usually a pure structural component, and the structure includes a good conductor or semiconductor material. Figure 1a As shown, the capacitive touch screen includes a transmitting electrode (TX) driving circuit 110, a receiving electrode (RX) sensing circuit 120 and a control circuit 130. The control circuit 130 outputs a driving signal (excitation signal) to the transmitting electrode driving circuit 110, so that a mutual capacitance is formed between the transmitting electrode driving circuit 110 and the receiving electrode sensing circuit 120. Figure 1b As shown, when a person holds a stylus 200 and touches the capacitive touch screen, the stylus 200 can also change the electrostatic capacitance of the electrode of the capacitive touch screen at the touch point, thereby changing the voltage or current of the electrode, so that the capacitive touch screen can recognize the approach of the touch object and generate a touch action.

[0045] like Figure 2a , Figure 2b and Figure 3 As shown, in the related art, the tip 210 of the stylus 200 generally adopts a hemispherical structure, and the hemispherical tip 210 is connected to the pen body 220 to form the stylus 200. However, with the development of styluses, in order to meet the ever-increasing requirements of touch accuracy, it is necessary to match the tip with a smaller size (smaller diameter). However, the reduction in tip size will lead to a decrease in the signal strength of capacitive touch, making it more difficult to debug the touch effect.

[0046] In view of this, the present invention provides a stylus tip, in which the contact portion of the stylus tip is set to a non-hemispherical structure, and the curvature diameter of the spherical surface formed by the contact portion is determined based on a preset signal amount. This can maintain the original signal amount by increasing the curvature diameter when the size of the stylus tip is reduced, avoiding the problem of signal amount reduction caused by reducing the size of the stylus tip, making it easier to debug touch control, and improving touch accuracy and user experience.

[0047] The nib of the stylus provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0048] As Figure 4 and Figure 5 shown, the nib 210 of the stylus 200 includes a connecting portion 211 and a contact portion 212. Specifically, one end of the connecting portion 211 is connected to the pen shaft 220 of the stylus 200, and the other end is connected to the contact portion 212. The contact portion 212 protrudes toward the side away from the connecting portion 211 to form a spherical surface in contact with the touch screen, and the contact portion 212 has a non-hemispherical structure.

[0049] Among them, the curvature diameter of the spherical surface can be determined based on a preset signal amount, and the preset signal amount is the signal amount required for the touch screen to respond to the nib touch. It can also be said that the preset signal amount is the signal amount when the nib and the touch screen make effective contact. Specifically, the preset signal amount can be the threshold level that can trigger a capacitive touch system (such as a touch screen) to recognize a touch object. If it is greater than this threshold level, it can be considered that the signal amount requirement is met. Usually, when ΔC / C0≥2%, the touch screen can recognize the touch. Among them, the mutual capacitance value in the non-touch state is usually called C0, and the mutual capacitance value in the touch state changes compared with the mutual capacitance value in the non-touch state, usually defined as ΔC. That is, when the nib touches the touch screen, ΔC / C0≥2% is sufficient.

[0050] It should be noted that when the nib contacts the touch screen, the capacitive touch system may or may not respond according to the contact position.

[0051] Exemplarily, the preset signal amount can be determined by a designer based on the application scenario of the stylus 200. After determining the preset signal amount, the curvature diameter of the spherical surface can be determined according to the first mapping relationship and the preset signal amount, where the first mapping relationship is the corresponding relationship between the signal amount and the curvature diameter.

[0052] Exemplarily, the signal amount corresponding to different curvature diameters of the contact portion 212 under different diameters of the first surface can be determined through finite element simulation software, and then the first mapping relationship can be obtained.

[0053] Figure 6 shows the change curve of the signal amount of the contact portion 212 under different curvature diameters when the diameter of the first surface is 3 mm, Figure 7 shows the signal amount of the contact portion 212 under different curvature diameters when the diameter of the first surface is 3 mm, and the signal amount of the contact portion 212 when the diameter of the first surface is 9 mm and the curvature diameter is 9 mm. Among them, the first surface is the surface of the contact portion 212 for connecting with the connecting portion 211.

[0054] Based on Figure 6 andFigure 7 It can be seen that when the diameters of the first surface are the same, the signal amount of the contact portion 212 increases as the curvature diameter increases. That is, at the same diameter, increasing the curvature diameter can increase the signal amount of the contact portion 212. When the diameters of the first surface are different, the signal amount of the contact portion 212 increases as the diameter of the first surface increases.

[0055] It should be noted that Figure 6 when the diameter of the first surface is 3 mm and the curvature diameter is 3 mm, the contact portion 212 is a hemispherical structure. Figure 7 when the diameter of the first surface is 9 mm and the curvature diameter is 9 mm, the contact portion 212 is a hemispherical structure.

[0056] In this embodiment, the contact portion 212 of the pen tip 210 is set as a non-hemispherical structure. The contact portion 212 protrudes toward the side away from the connecting portion 211 to form a spherical surface, and the curvature diameter of the spherical surface is determined based on a preset signal amount. It can, while reducing the pen tip size, keep the original signal amount of the contact portion by increasing the curvature diameter, avoid the problem of signal amount reduction caused by the reduction of the pen tip size, be more convenient for touch control debugging, avoid touch anomalies (such as jumping points or disconnection, etc.) caused by insufficient signal-to-noise ratio, and improve touch control accuracy and the user experience.

[0057] The present invention does not limit the shape of the connecting portion 211 of the pen tip 210, as long as it can ensure the stability when connecting the contact portion 212 and the pen barrel 220. For example, as Figure 5 shown, the connecting portion 211 can be in a conical structure. Again, for example, as Figure 8 shown, the connecting portion 211 can also be in a cylindrical structure.

[0058] In this embodiment, setting the connecting portion 211 as a conical structure can improve the aesthetics of the touch pen 200.

[0059] Furthermore, when the connecting portion 211 is in a cylindrical structure, the diameter of the first surface is greater than the diameter of the surface of the connecting portion 211 that is connected to the contact portion 212. Specifically, in order to ensure the reliability of the connection, the difference between the diameter of the surface of the connecting portion 211 that is connected to the contact portion 212 and the diameter of the first surface does not exceed 0.5 mm.

[0060] The present application also does not limit the connection method between the connecting portion 211 and the contact portion 212. For example, the connecting portion 211 and the contact portion 212 can be bonded or welded together. Again, for example, the connecting portion 211 and the contact portion 212 can be an integrally formed structure, that is, the connecting portion 211 and the contact portion 212 are integrally formed.

[0061] Specifically, the one-piece molding process refers to the process of forming the entire part in one go within a single mold, which has advantages such as simplified manufacturing processes, high finished product quality, and low costs.

[0062] Optionally, the connecting portion 211 and the contact portion 212 can be integrally formed by means such as injection molding, casting, or 3D printing.

[0063] In some alternative embodiments, the curvature diameter of the spherical surface is less than or equal to the maximum curvature diameter, and the maximum curvature diameter of the spherical surface can be determined based on the diameter of the first surface and the first included angle, where the first included angle is the minimum included angle between the contact portion 212 and the touch screen.

[0064] Specifically, as Figure 9 shown, based on the diameter of the first surface and the first included angle, the maximum curvature diameter can be determined by the following formula (1):

[0065] K = 2X = d / sin(90 ° - α1) (1)

[0066] where K represents the maximum curvature diameter of the spherical surface, X represents the maximum curvature radius of the spherical surface, d represents the diameter of the first surface, α1 represents the first included angle. Exemplarily, the first included angle can be determined according to the actual application scenario of the stylus 200. Exemplarily, Figure 9 in the case where the first included angle α1 is 30°, but not limited thereto.

[0067] In this embodiment, by determining the maximum curvature diameter, it is convenient for designers to understand the maximum curvature diameter corresponding to a corresponding diameter, so as to be able to determine the maximum signal amount of the contact portion 212 under the corresponding diameter, and further more conveniently and accurately determine the diameter of the first surface of the contact portion 212. In addition, the maximum curvature diameter of the spherical surface can be more accurately determined through the formula.

[0068] In some alternative embodiments, the value range of the first included angle can be limited to between 5 degrees and 45 degrees, that is, the first included angle can be any value between 5 degrees and 45 degrees. For example, the first included angle can be 5 degrees, 10 degrees, 20 degrees, 30 degrees, 35 degrees, 40 degrees, or 45 degrees, etc.

[0069] In this embodiment, by limiting the value range of the first included angle to between 5 degrees and 45 degrees, it is not only possible to avoid the situation where the signal amount is small due to too small a first included angle, but also to avoid the situation where the contact position between the pen tip and the touch screen is at the transition joint surface and the contact point is not an arc surface, which affects the user's writing experience, thus taking into account both the signal amount and the user's usage experience.

[0070] In some alternative embodiments, when the diameter of the first surface is 3 mm, the value range of the maximum curvature diameter is from 3.01 mm to 4.24 mm. That is, when the diameter of the first surface is 3 mm, the maximum curvature diameter can be any value from 3.01 mm to 4.24 mm. For example, the maximum curvature diameter can be 3.01 mm, 3.20 mm, 3.30 mm, 3.46 mm, 3.5 mm, 3.6, 4.00 mm, 4.24 mm, etc.

[0071] In this embodiment, when the diameter of the first surface is 3 mm, limiting the value range of the maximum curvature diameter between 3.01 mm and 4.24 mm can take into account both the signal strength and the user experience.

[0072] As Figure 4 shown, the present invention also provides a stylus 200, which includes a pen barrel 220 and the nib 210 of any of the above embodiments. Among them, the pen barrel 220 is for the user to hold, and the nib 210 is connected to the pen barrel 220 through a connecting portion 211.

[0073] Specifically, the pen barrel 220 is used to connect the nib and the human hand, so that charges can be absorbed through the nib. Among them, the pen barrel 220 can be a conductor (not necessarily a good conductor, as long as it has conductivity), and the charge amount of the nib is transmitted to the human hand. The pen barrel 220 can also be a capacitor. There is a capacitance between the pen barrel 220 and the nib and / or between the pen barrel 220 and the human hand. Through capacitive coupling, the charge amount can also be transmitted to the human hand.

[0074] Exemplarily, the stylus 200 can be a passive capacitive pen. Specifically, a capacitive pen is a pen made of a conductive material with conductive properties and is used for touching a capacitive touch screen. A capacitive pen can also be understood as an auxiliary device that uses a conductive material to imitate a finger to complete human-computer interaction. There is no circuit in a passive capacitive pen. By contacting the touch screen, the capacitance of the touch screen is changed, so as to achieve the same effect as touching a capacitive touch screen with a finger. The nib of a passive capacitive pen is a conductive material, such as conductive foam, metal, or brush, etc.

[0075] According to an embodiment of the present invention, there is also provided an embodiment of a method for designing the nib of a stylus. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0076] In this embodiment, a method for designing the nib of a stylus is provided, which can be used for a device for designing the nib of a stylus. The device for designing the nib of a stylus can be an electronic device such as a computer or a computer. Figure 10FIG. 1 is a schematic flow chart of a method for designing the tip of a stylus according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

[0077] Step S1001, obtaining a preset semaphore.

[0078] Wherein, the preset semaphore is the semaphore required for the touch screen to respond to the touch of the tip of the stylus. The preset semaphore can be a preset value, or can be determined by the designer according to the application scenario and experience of the stylus, and then the preset semaphore is input into the tip design device of the stylus through a human-computer interaction device (such as a mouse, keyboard or touch screen, etc.).

[0079] Step S1002, determining the curvature diameter based on the preset semaphore.

[0080] Exemplarily, the curvature diameter can be determined according to the preset semaphore and the first mapping relationship. Wherein, the first mapping relationship is the corresponding relationship between the semaphore and the curvature diameter.

[0081] Exemplarily, the semaphore of the contact part corresponding to different curvature diameters can be determined by finite element simulation software under the diameters of various different first surfaces, and then the first mapping relationship can be obtained.

[0082] Step S1003, constructing a model of the connecting part.

[0083] One end of the connecting part is connected to the pen shaft of the stylus. The model of the connecting part can be constructed based on the design software (such as 3D MAX, etc.) installed on the tip design device of the stylus.

[0084] Specifically, after determining the first diameter and the curvature diameter, 3D MAX responds to the user's operation and generates a model of the connecting part based on the first diameter and other parameters input by the user. For example, when the connecting part has a cylindrical structure, the other parameters include the height (the distance between two mutually parallel circular surfaces).

[0085] Step S1004, constructing a model of the contact part for contacting the touch screen on the connecting part according to the curvature diameter, so as to form a model of the tip of the stylus.

[0086] Specifically, after forming the model of the connecting part, the design software installed on the tip design device of the stylus constructs a model of the contact part on the model of the connecting part to complete the design of the tip.

[0087] Exemplarily, after determining the model of the connecting part and the curvature diameter, 3D MAX responds to the user's operation and generates a contact part on the connecting part based on the curvature diameter input by the user.

[0088] Wherein, the contact part protrudes towards the side away from the connection part to form a spherical surface in contact with the touch screen, and the contact part has a non-hemispherical structure.

[0089] For the tip design method of the stylus provided in this embodiment, after obtaining a preset signal amount, the curvature diameter is determined based on the preset signal amount, and then a model of the contact part for contacting the touch screen is set on the model of the constructed connection part according to the curvature diameter to complete the design of the tip. By designing the tip with the method provided by the present invention, it is possible to keep the original signal amount of the contact part by increasing the curvature diameter while reducing the tip size, avoiding the problem of signal amount decrease caused by the reduction of the tip size, making it more convenient for touch debugging, and improving touch accuracy and user experience.

[0090] In some optional embodiments, the tip design method of the stylus further includes: determining the maximum curvature diameter of the spherical surface according to the diameter of the first surface and the first included angle. The implementation process of determining the maximum curvature diameter of the spherical surface has been described in detail in the foregoing embodiments and will not be elaborated here.

[0091] As Figure 11 shown, an embodiment of the present invention also provides a tip design device for a stylus, and the device includes:

[0092] An acquisition module 1101, configured to acquire a preset signal amount, where the preset signal amount is the signal amount required for the touch screen to respond to the touch of the tip;

[0093] A first determination module 1102, configured to determine the curvature diameter based on the preset signal amount;

[0094] A first design module 1103, configured to construct a model of the connection part, where one end of the connection part is connected to the pen shaft of the stylus;

[0095] A second design module 1104, configured to construct a model of the contact part for contacting the touch screen on the connection part according to the curvature diameter to form a model of the tip of the stylus. Wherein, the contact part protrudes towards the side away from the connection part to form a spherical surface in contact with the touch screen, and the contact part has a non-hemispherical structure.

[0096] In some optional embodiments, the device further includes:

[0097] A second determination module, configured to determine the maximum curvature diameter of the spherical surface according to the diameter of the first surface and the first included angle.

[0098] The further function descriptions of the above-mentioned various modules and units are the same as those in the corresponding embodiments above and will not be elaborated here.

[0099] The nib design device of the stylus in this embodiment is presented in the form of functional units. Here, the unit refers to an Application Specific Integrated Circuit (ASIC), a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0100] The embodiment of the present invention also provides a computer device having the above Figure 11 nib design device of the stylus shown.

[0101] Please refer to Figure 12 , Figure 12 which is a schematic structural diagram of a computer device provided by an optional embodiment of the present invention. As shown in Figure 12 , the computer device includes: one or more processors 1210, a memory 1220, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a set of blade servers, or a multi-processor system). Figure 12 In

[0102]

[0103] Among them, the memory 1220 stores instructions executable by at least one processor 1210, so that the at least one processor 1210 executes the method shown in the above embodiment.

[0104] The memory 1220 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function. The data storage area may store data created according to the use of the computer device, etc. In addition, the memory 1220 may include high-speed random access memory and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 1220 may optionally include a memory remotely located relative to the processor 1210, and these remote memories may be connected to the computer device through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0105] The memory 1220 may include volatile memory, such as random access memory. The memory may also include non-volatile memory, such as flash memory, a hard disk, or a solid-state drive. The memory 1220 may also include a combination of the above types of memory.

[0106] The computer device further includes an input device 1230 and an output device 1240. The processor 1210, the memory 1220, the input device 1230, and the output device 1240 may be connected through a bus or other means. Figure 12 Taking connection through a bus as an example.

[0107] The input device 1230 may receive input digital or character information and generate key signal inputs related to user settings and function controls of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED), and a haptic feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light-emitting diode, a display, and a plasma display. In some alternative embodiments, the display device may be a touch screen.

[0108] Embodiments of the present invention also provide a computer-readable storage medium. The method according to the embodiments of the present invention can be implemented in hardware, firmware, or be implemented as computer code that can be recorded on a storage medium, or be implemented as computer code that is originally stored in a remote storage medium or a non-transitory machine-readable storage medium and downloaded through a network and will be stored in a local storage medium. Thus, the method described herein can be stored as such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0109] In the description of this specification, the descriptions referring to the terms "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0110] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0111] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0112] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0113] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nib of a stylus, characterized in that, The pen tip includes a connecting portion and a contact portion; One end of the connecting portion is connected to the pen shaft of the stylus, and the other end is connected to the contact portion; The contact portion protrudes toward a side away from the connecting portion to form a spherical surface in contact with the touch screen, and the contact portion has a non-hemispherical structure. Among them, the curvature diameter of the spherical surface is determined based on a preset signal amount, and the preset signal amount is the signal amount required for the touch screen to respond to the pen tip touch.

2. The pen tip according to claim 1, wherein The curvature diameter of the spherical surface is less than or equal to the maximum curvature diameter, and the maximum curvature diameter is determined according to the diameter of the first surface and the first included angle; Among them, the first surface is the surface of the contact portion for connecting with the connecting portion, and the first included angle is the minimum included angle between the contact portion and the touch screen.

3. The nib according to claim 2, characterized in that, The value range of the first included angle is from 5 degrees to 45 degrees.

4. The nib according to claim 2 or 3, characterized in that, The diameter of the first surface is 3 mm, and the value range of the maximum curvature diameter is from 3.01 mm to 4.24 mm.

5. The nib according to claim 2 or 3, characterized in that, The connecting portion has a conical structure or a cylindrical structure.

6. The pen tip according to claim 2 or 3, wherein The connecting portion has a cylindrical structure, and the diameter of the first surface is greater than the diameter of the surface of the connecting portion that is connected to the contact portion.

7. The nib according to any one of claims 1 to 3, characterized in that The connecting portion and the contact portion are integrally formed.

8. A stylus, characterized in that, It includes: A pen shaft and the pen tip according to any one of claims 1 to 7; The pen shaft is for a user to hold; The pen tip is connected to the pen shaft through the connecting portion.

9. The stylus according to claim 8, wherein, The stylus is a passive capacitive pen.

10. A method for designing the nib of a stylus, characterized in that, The method includes: Obtaining a preset signal amount, where the preset signal amount is the signal amount required for the touch screen to respond to the pen tip touch; Determining the curvature diameter based on the preset signal amount; Constructing a model of the connecting portion, where one end of the connecting portion is connected to the pen shaft of the stylus; According to the curvature diameter, constructing a model of the contact portion for contacting the touch screen on the connecting portion to form a model of the pen tip of the stylus; Among them, the contact portion protrudes toward a side away from the connecting portion to form a spherical surface in contact with the touch screen, and the contact portion has a non-hemispherical structure.

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