Touch pen and touch equipment
By setting the conductive liquid gallbladder and multiple conductive layers inside the pen shaft of the stylus pen, the inclination angle is determined using the liquid flow level principle, which solves the problem of low accuracy in tilt angle calculation in the prior art, and improves the accuracy of stroke changes and stability.
Patent Information
- Application Number
- CN202411455122.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-02-14
AI Technical Summary
The calculation results of the tilt angle of the existing stylus are relatively low, mainly because the touch screen may be affected by external forces or noise during operation, resulting in inaccurate capacitance changes.
A stylus pen is designed, and the pen holder is equipped with a conductive liquid gallbladder, and the inner wall of the gallbladder is provided with multiple conductive layers and conductive contact points. Through the liquid flow leveling principle, as the stylus tilts with different angles, the conductive contact point comes into contact with the conductive liquid and enters a conduction state. The controller determines the inclination angle of the pen rod with respect to the horizontal plane by obtaining the conduction situation.
It improves the accuracy of the calculation results of the stylus tilt angle, reduces the dependence on external noise, and enhances the effect of stroke changes to fit the actual pen angle of the user.
Smart Images
Figure CN119440283A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of touch technology, and in particular to a touch pen and a touch device. Background Art
[0002] With the rapid development of display technology and touch technology, stylus pens that can be used on tablet computers, smart phones or other electronic devices are becoming more and more common. In order to enable the stylus to simulate the visual effects of real pen strokes in grayscale and thickness, the stroke effect can be changed by calculating the inclination angle of the stylus.
[0003] At present, the inclination angle of the existing stylus pen is usually calculated based on the change in the capacitance of the touch screen in contact with the stylus pen. Therefore, if the touch screen is subjected to other external forces or other noises during operation, or the distance between multiple touch sensors in the touch screen is large, resulting in a low touch resolution, the calculation result of the inclination angle of the stylus pen will be less accurate. Summary of the invention
[0004] Based on this, it is necessary to provide a touch pen and a touch device that can improve the accuracy of the calculation result of the tilt angle in order to solve the above technical problems.
[0005] In a first aspect, the present application provides a stylus pen, the stylus pen comprising a pen holder, a conductive liquid bladder disposed inside the pen holder, and a controller;
[0006] The conductive liquid gallbladder contains a flowable conductive liquid; the conductive liquid gallbladder is provided with a plurality of conductive layers on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; each conductive layer includes a plurality of conductive contact points; each conductive contact point enters a conducting state after contacting the conductive liquid; the plurality of conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to a controller; the first direction intersects with the second direction;
[0007] The controller is used to obtain the conduction status of each conductive contact point included in each conductive layer to determine the inclination angle of the pen shaft relative to the horizontal plane.
[0008] In a second aspect, the present application further provides a touch control device, wherein the touch control device comprises the touch pen as described in any one of the first aspect of the present application.
[0009] The above-mentioned touch pen and touch device, the touch pen includes a pen body, a conductive liquid bladder arranged inside the pen body, and a controller; the conductive liquid bladder is filled with flowable conductive liquid; the conductive liquid bladder is provided with multiple conductive layers on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; each conductive layer includes multiple conductive contact points; each conductive contact point enters a conductive state after contacting the conductive liquid; multiple conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to the controller; the first direction intersects with the second direction; the controller is used to obtain the conductivity of each conductive contact point included in each conductive layer to determine the inclination angle of the pen body relative to the horizontal plane. The stylus provided in the present application has a conductive liquid bladder arranged inside the pen shaft, and the conductive liquid bladder is provided with multiple conductive layers on the inner wall, and each conductive layer includes multiple conductive contact points. Therefore, based on the liquid leveling principle, as the stylus is tilted at different angles, different numbers of conductive contact points in the stylus will come into contact with the conductive liquid and then enter a conductive state. Furthermore, the controller can accurately determine the inclination angle of the pen shaft relative to the horizontal plane by obtaining the conductive status of each conductive contact point included in each conductive layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic diagram of the structure of a stylus;
[0011] Figure 2 is a schematic diagram of the overall structure of a stylus pen in one embodiment;
[0012] Figure 3 is a schematic structural diagram of a partial portion of a stylus pen in one embodiment;
[0013] Figure 4 A schematic diagram of a flow chart of determining the inclination angle of a pen holder relative to a horizontal plane in one embodiment;
[0014] Figure 5 It is a schematic diagram of a flow chart of determining the inclination angle of the pen holder relative to the horizontal plane in another embodiment. DETAILED DESCRIPTION
[0015] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.
[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0017] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.
[0018] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.
[0019] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.
[0020] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.
[0021] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.
[0022] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.
[0023] This application is made by the inventor based on the recognition and research of the following issues:
[0024] With the popularity of tablet computers and smart phones, the application of stylus is becoming more and more common. In order to enable the stylus to simulate the visual effect of real pen strokes, the stylus can be operated by calculating the inclination angle of the stylus, so that the grayscale and thickness of the stylus strokes can be changed according to the inclination angle of the stylus. In the prior art, in order for the digital tablet system to calculate the inclination angle of the stylus, the stylus is usually required to provide multiple driving signals, such as Figure 1 As shown, the stylus has two electrodes for transmitting driving signals, namely the first electrode and the second electrode. The vertical distance between the first electrode and the second electrode is L1. According to the capacitance changes generated at different points of the touch screen, the capacitance sensing distance L2 is obtained. Combining the geometric theorem, L1 and L2, the inclination angle of the stylus relative to the touch screen can be calculated, and finally converted into the stroke change of the stylus based on the inclination angle.
[0025] It can be seen that in the existing stylus tilt angle calculation method, the calculation of the tilt angle depends on the operation of the touch screen capacitance change, and the touch screen usually has other external forces or other noises, and the distance between multiple touch sensors in the touch screen is large, which may lead to inaccurate L2. As a result, the calculation result of the stylus tilt angle will be less accurate, and further, the stroke change effect of the stylus will not fit the user's actual pen angle.
[0026] Based on the above technical problems, the inventors have found that under the action of the liquid leveling principle, the inclination angle between the stylus pen holder and the horizontal plane can be determined by the conductive liquid. Based on this, the inventors have further studied the technical solution of the embodiment of the present application. Specifically, the stylus provided in the embodiment of the present application includes a pen holder, a conductive liquid bladder arranged inside the pen holder, and a controller. The conductive liquid bladder contains a flowable conductive liquid; the conductive liquid bladder is provided with multiple conductive layers on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; each conductive layer includes multiple conductive contact points; each conductive contact point enters a conductive state after contacting the conductive liquid; multiple conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to the controller; the first direction intersects with the second direction. Using the above technical solution, the controller is used to obtain the conduction status of each conductive contact point included in each conductive layer, so that the inclination angle of the pen holder relative to the horizontal plane can be accurately determined, thereby solving the problem of low accuracy of the calculation result of the stylus inclination angle.
[0027] The above is the core idea of this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] Based on this, Figure 2 As shown, an embodiment of the present application provides a stylus pen, which includes a pen holder, a conductive liquid bladder disposed inside the pen holder, and a controller;
[0029] Conductive fluid The gallbladder contains a flowable conductive fluid; e.g. Figure 3 As shown in (a), the conductive liquid gallbladder is provided with a plurality of conductive layers (1, 2 ... N-1, N) on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; Figure 3 As shown in (b), each conductive layer includes a plurality of conductive contact points (1, 2...M); each conductive contact point enters a conductive state after contacting the conductive liquid; the plurality of conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to a controller; the first direction intersects with the second direction;
[0030] The controller is used to obtain the conduction status of each conductive contact point included in each conductive layer to determine the inclination angle of the pen shaft relative to the horizontal plane.
[0031] Among them, the stylus is an input device used to interact with the touch screen; the stylus can simulate writing, drawing, marking or other user interaction actions with higher touch accuracy than human fingers. Optionally, the stylus can be a capacitive stylus or a resistive stylus. The touch screen using the stylus has both touch function and display function, and the touch screen can be a tablet computer, a smart phone, a smart whiteboard, a smart wearable device or other screens with touch function and display function.
[0032] The pen barrel is the main part of the external structure of the stylus pen, and the pen barrel is used for the user to hold it when using it. In addition to the conductive liquid bladder, other internal components of the stylus pen may also be arranged inside the pen barrel. For example, electronic circuits, batteries, sensors or other components may also be arranged inside the pen barrel. It is easy to understand that the pen barrel also plays a protective role for the conductive liquid bladder arranged inside it.
[0033] The conductive liquid bladder is filled with conductive liquid, which is used to present the angle tilt phenomenon of the stylus as a change in electrical signal; the conductive liquid bladder is a closed structure, thereby preventing liquid leakage and pressure changes while allowing the conductive liquid to move within a specific range of the conductive liquid bladder; it is easy to understand that the material used to make the conductive liquid bladder should be a material that does not react with the conductive liquid. For example, the conductive liquid bladder can be made of plastic or plated metal.
[0034] Conductive liquid is a liquid with a certain conductivity. It is easy to understand that the conductive liquid should be a type of liquid that does not react with the material used to make the conductive liquid gallbladder. For example, the conductive liquid can be an electrolyte solution, a conductive polymer solution, an ionic liquid, a metal particle suspension, a nanofluid, etc.
[0035] Optionally, the controller can be disposed at the tip of the stylus pen, inside the stylus pen, at the end of the stylus pen, or at other locations that can be connected to each conductive contact point. Figure 2 The controller is not shown.
[0036] Exemplarily, the controller may be a microcontroller, a digital signal processor, a system-on-chip, a field programmable gate array, an embedded system or other controller capable of performing signal processing.
[0037] The conductive contact points in the conductive layer are used to close the circuit between the controller and enter the conductive state when in contact with the conductive liquid, so as to generate an electrical signal that can be detected by the controller; there is no electrical short circuit between the conductive layers, that is, there is no conductivity between the conductive layers, and at the same time, there is no electrical short circuit between the conductive contact points, that is, there is no conductivity between the conductive contact points; it is easy to understand that the working state of the conductive contact point is the conductive state or the non-conductive state.
[0038] Optionally, the first direction and the second direction are perpendicular to each other.
[0039] The liquid leveling principle is a principle concept in the field of physics. Specifically, when the conductive liquid reaches a static state in the pen due to gravity, the conductive liquid will form a horizontal plane relative to the earth's gravity field. Therefore, it is easy to understand that the inclination angle of the pen relative to the horizontal plane can also be understood as the angle between the static conductive liquid and the inner wall of the pen, such as Figure 2 As shown, the inclination angle of the pen shaft relative to the horizontal plane is α.
[0040] Optionally, the pen shaft can be a cylindrical pen shaft or a rectangular pen shaft; when the pen shaft is a cylindrical pen shaft, multiple conductive contact points in the same conductive layer are evenly distributed in a circular shape along the center point of the plane where the second direction is located; when the pen shaft is a rectangular pen shaft, multiple conductive contact points in the same conductive layer are evenly distributed along the circumference along the center point of the plane where the second direction is located.
[0041] In an exemplary embodiment, the first direction is the longitudinal direction of the conductive liquid capsule, and the second direction is the transverse direction of the conductive liquid capsule.
[0042] Among them, the longitudinal axis direction of the conductive liquid capsule refers to the axis along the length direction of the pen shaft; the transverse axis direction of the conductive liquid capsule refers to the axis perpendicular to the length direction of the pen shaft.
[0043] In an exemplary embodiment, after determining the inclination angle of the pen shaft relative to the horizontal plane, the controller is further configured to determine a stroke effect of the stylus pen based on the inclination angle of the pen shaft relative to the horizontal plane.
[0044] In another exemplary embodiment, after determining the inclination angle of the pen shaft relative to the horizontal plane, the controller is further used to determine the inclination angle of the stylus relative to the touch screen based on the inclination angle, so as to determine the stroke effect of the stylus based on the inclination angle of the stylus relative to the touch screen.
[0045] In the above-mentioned stylus pen, the stylus pen includes a pen body, a conductive liquid bladder arranged inside the pen body, and a controller; the conductive liquid bladder is filled with flowable conductive liquid; the conductive liquid bladder is provided with multiple conductive layers on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; each conductive layer includes multiple conductive contact points; each conductive contact point enters a conductive state after contacting the conductive liquid; multiple conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to the controller; the first direction intersects with the second direction; the controller is used to obtain the conductivity of each conductive contact point included in each conductive layer to determine the inclination angle of the pen body relative to the horizontal plane. The stylus provided in the present application has a conductive liquid bladder arranged inside the pen shaft, and the conductive liquid bladder is provided with multiple conductive layers on the inner wall, and each conductive layer includes multiple conductive contact points. Therefore, based on the liquid leveling principle, as the stylus is tilted at different angles, different numbers of conductive contact points in the stylus will come into contact with the conductive liquid and then enter a conductive state. Furthermore, the controller can accurately determine the inclination angle of the pen shaft relative to the horizontal plane by obtaining the conductive status of each conductive contact point included in each conductive layer.
[0046] In an exemplary embodiment, the controller is also used to determine the inclination angle of the pen shaft relative to the horizontal plane based on the conductivity of at least one first conductive contact point in the first conductive layer and the conductivity of at least one second conductive contact point in the second conductive layer.
[0047] In an exemplary embodiment, the first conductive layer is the highest layer in the first direction among the plurality of conductive layers, and the second conductive layer is an adjacent conductive layer to the first conductive layer.
[0048] The first conductive layer is the highest conductive layer having at least one conductive contact point in contact with the conductive liquid and in a conductive state along the first direction. It is easy to understand that, based on the liquid leveling principle, the first conductive layer is a conductive layer among multiple conductive layers having a conductive contact point in a conductive state and being closest to the liquid horizontal surface in contact with the air in the first direction. It is easy to understand that the liquid surface of the liquid horizontal surface in a balanced state is perpendicular to the gravity direction everywhere.
[0049] The second conductive layer is an adjacent conductive layer to the first conductive layer, which means that the second conductive layer is the conductive layer immediately below the first conductive layer. In other words, the second conductive layer is physically adjacent to the first conductive layer, but is below the first conductive layer in the first direction.
[0050] In this embodiment, based on the principle of liquid leveling, it is easy to understand that there are conductive contact points that have entered the conductive state and a conductive layer that is closest to the liquid horizontal plane in contact with the air in the first direction, and a conductive layer adjacent to it, which can determine the inclination angle of the pen shaft relative to the horizontal plane. Therefore, the controller determines the inclination angle of the pen shaft relative to the horizontal plane based on the conductivity of at least one first conductive contact point in the first conductive layer and the conductivity of at least one second conductive contact point in the second conductive layer. Thus, the controller can accurately determine the inclination angle of the pen shaft relative to the horizontal plane based on the two highest conductive layers with conductive contact points that have entered the conductive state in the first direction, thereby improving the accuracy of the calculation result of the inclination angle and the efficiency of obtaining the calculation result of the inclination angle.
[0051] In an exemplary embodiment, the above-mentioned controller is also used to determine the target slope based on other first conductive contact points that have not entered the conductive state in the first conductive layer or other second conductive contact points that have not entered the conductive state in the second conductive layer when the number of first conductive contact points that enter the conductive state is one and the number of second conductive contact points that enter the conductive state is one, and determine the inclination angle of the pen shaft relative to the horizontal plane based on the target slope, the first conductive contact point that enters the conductive state, and the second conductive contact point that enters the conductive state.
[0052] The target slope may be determined by the least square method based on other first conductive contact points in the first conductive layer that have not entered the conductive state or other second conductive contact points in the second conductive layer that have not entered the conductive state.
[0053] Specifically, when the number of the first conductive contact point that enters the on state is one and the number of the second conductive contact point that enters the on state is one, it is difficult to accurately determine the inclination angle of the pen shaft relative to the horizontal plane based only on the first conductive contact point that enters the on state and the second conductive contact point that enters the on state. Therefore, it is necessary to determine the target slope based on other first conductive contact points that have not entered the on state in the first conductive layer or other second conductive contact points that have not entered the on state in the second conductive layer. Thus, the inclination angle of the pen shaft relative to the horizontal plane can be determined based on the target slope, the first conductive contact point that enters the on state and the second conductive contact point that enters the on state through geometric theorem.
[0054] For example, Figure 4 As shown in (a), as the stylus is tilted, the conductive liquid contacts a first conductive contact point in the first conductive layer (conductive layer N) and a second conductive contact point in the second conductive layer (conductive layer N-1), respectively. The height difference between the first conductive layer and the second conductive layer is represented as h, the diameter length of each conductive layer is represented as D, and the inclination angle of the pen shaft relative to the horizontal plane is represented as α. Then, Figure 4 As shown in (b), based on the trigonometric theorem in geometry, we know that tanα=D / h. Based on this, we can further determine the angle of α to determine the inclination angle of the pen shaft relative to the horizontal plane.
[0055] In this embodiment, even if the number of conductive contact points in contact with the conductive liquid is small, that is, when the number of the first conductive contact point entering the conductive state is one and the number of the second conductive contact point entering the conductive state is one, it is possible to fit the target inclined plane to determine the inclination angle of the pen shaft relative to the horizontal plane with the assistance of geometric theorems, thereby improving the accuracy of the calculation result of the inclination angle while also improving the efficiency of obtaining the calculation result of the inclination angle.
[0056] In an exemplary embodiment, the above-mentioned controller is also used to determine the inclination angle of the pen shaft relative to the horizontal plane based on the first conductive contact point entering the conductive state in the first conductive layer and the second conductive contact point entering the conductive state in the second conductive layer when the number of the first conductive contact points entering the conductive state is at least one and the number of the second conductive contact points entering the conductive state is at least two.
[0057] In another exemplary embodiment, the above-mentioned controller is also used to determine the inclination angle of the pen shaft relative to the horizontal plane based on the first conductive contact point entering the conductive state in the first conductive layer and the second conductive contact point entering the conductive state in the second conductive layer when the number of the first conductive contact points entering the conductive state is at least one, the number of the second conductive contact points entering the conductive state is at least two, there is at least one first conductive contact point that has not entered the conductive state, and there is at least one second conductive contact point that has not entered the conductive state.
[0058] In another exemplary embodiment, the above-mentioned controller is also used to determine the second arc surface based on the second conductive contact point entering the conductive state in the second conductive layer when the number of the first conductive contact point entering the conductive state is one, the number of the second conductive contact points entering the conductive state is at least two, there is at least one first conductive contact point that has not entered the conductive state, and there is at least one second conductive contact point that has not entered the conductive state, and determine the inclination angle of the pen shaft relative to the horizontal plane based on the first conductive contact point entering the conductive state in the first conductive layer and the second arc surface.
[0059] Among them, based on the second conductive contact point that enters the conductive state in the second conductive layer, two edge conductive contact points of the second conductive layer are determined, and the two edge conductive contact points are connected to obtain a closed line, so that the second arc surface can be determined based on the closed line and the second conductive contact point that enters the conductive state.
[0060] Specifically, a diameter passing through the center of the second conductive layer and perpendicular to the closed line is determined in the second conductive layer, and the intersection between the diameter and the closed line is determined as the second target conductive contact point. Thus, based on the connecting line of the second target conductive contact point and the first conductive contact point in the first conductive layer that enters the conductive state, the inclination angle of the pen shaft relative to the horizontal plane can be determined.
[0061] For example, Figure 5 As shown in (a), as the stylus is tilted, the conductive liquid contacts a first conductive contact point (conductive contact point A) in the first conductive layer (conductive layer N) and nine second conductive contact points in the second conductive layer (conductive layer N-1), respectively. The inclination angle of the stylus relative to the horizontal plane is represented as α. Figure 5 As shown in (b), the two edge conductive contact points in the second conductive layer are conductive contact point 1 and conductive contact point 9. The two edge conductive contact points are connected to obtain a closed line. The diameter passing through the center of the second conductive layer and perpendicular to the closed line is determined in the second conductive layer, and the intersection B between the diameter and the closed line is determined as the second target conductive contact point. Based on the intersection B and the connecting line of the conductive contact point A, the inclination angle of the pen shaft relative to the horizontal plane can be determined.
[0062] In another exemplary embodiment, the controller is also used to determine a first arc surface based on the first conductive contact points that enter the on state in the first conductive layer, and to determine a second arc surface based on the second conductive contact points that enter the on state in the second conductive layer, when the number of the first conductive contact points that enter the on state is at least two, the number of the second conductive contact points that enter the on state is at least two, there is at least one first conductive contact point that has not entered the on state, and there is at least one second conductive contact point that has not entered the on state; and to determine the inclination angle of the pen shaft relative to the horizontal plane based on the first arc surface and the second arc surface.
[0063] Among them, the process of determining the first arc surface based on the first conductive contact point in the first conductive layer that enters the conductive state is the same as the principle of determining the second arc surface based on the second conductive contact point in the second conductive layer that is also in the conductive state, so it will not be repeated here.
[0064] Specifically, a diameter passing through the center of the first conductive layer and perpendicular to the closed line is determined in the first conductive layer, and the intersection between the diameter and the closed line is determined as the first target conductive contact point. Thus, the inclination angle of the pen shaft relative to the horizontal plane can be determined based on the connecting line of the first target conductive contact point and the second target conductive contact point.
[0065] In this embodiment, when the number of the first conductive contact points entering the on state is at least one and the number of the second conductive contact points entering the on state is at least two, the second arc surface can be determined by the at least two second conductive contact points entering the on state, and thus, the angle between the conductive liquid and the inner wall of the stylus pen can be determined by at least one first conductive contact point entering the on state and the second arc surface, and further, the inclination angle of the pen shaft relative to the horizontal plane can be determined, which can improve the accuracy of the calculation result of the inclination angle and the efficiency of obtaining the calculation result of the inclination angle.
[0066] In an exemplary embodiment, when the number of the first conductive contact points entering the conductive state is at least one and all the conductive contact points in the second conductive layer enter the conductive state, the inclination angle of the pen shaft relative to the horizontal plane is determined to be a preset angle.
[0067] The preset angle may be a very small angle. For example, the preset angle may be 0°.
[0068] In an exemplary embodiment, there is no conduction between the conductive layers, and there is no conduction between the conductive contact points.
[0069] In this embodiment, there is no conduction between the conductive layers, and there is no conduction between the conductive contact points. Therefore, by isolating the conductive layers and the conductive contact points, it is ensured that the conduction signals between each conductive contact point are independent and not affected by other conductive contact points. At the same time, it is also possible to reduce the change in contact resistance by ensuring electrical isolation between the conductive contact points, thereby improving the accuracy of the calculated results of the tilt angle.
[0070] In an exemplary embodiment, a shock absorbing structure for reducing the flow amplitude of the conductive liquid is provided in the conductive liquid gallbladder.
[0071] Among them, the shock-absorbing structure can reduce the flow amplitude of the conductive liquid by reducing the liquid turbulence caused by external vibration or sudden movement, thereby improving the stability and accuracy of the calculation result of the tilt angle.
[0072] Optionally, the damping structure may be a tuned liquid damper, a distributed damper, an electrorheological fluid damper or other structures capable of reducing the flow amplitude of the conductive liquid.
[0073] Optionally, the shock absorbing structure may be disposed in the inner wall of the conductive liquid gallbladder, in direct contact with the conductive liquid to reduce the flow amplitude of the conductive liquid.
[0074] In this embodiment, a shock-absorbing structure for reducing the flow amplitude of the conductive liquid is provided in the conductive liquid bladder, so that when the user operates the stylus to write, the flow of the conductive liquid can be made smoother, thereby avoiding the undesirable situation in which the controller cannot accurately obtain the conduction conditions of each conductive contact point included in each conductive layer due to the violent shaking of the conductive liquid. Furthermore, the presence of the shock-absorbing structure can improve the stability and accuracy of the calculation results of the inclination angle.
[0075] In an exemplary embodiment, the stylus pen further includes a tilt sensor; the controller is further configured to obtain sensor data of the tilt sensor, and determine the tilt angle of the pen shaft relative to the horizontal plane based on the conduction condition and the sensor data.
[0076] Optionally, the tilt sensor may be a MEMS tilt sensor, a gyroscope tilt sensor, a vibration tilt sensor, a magnetic tilt sensor, a capacitive tilt sensor or other sensors capable of generating corresponding electrical signal outputs according to the tilt angle.
[0077] Optionally, the inclination sensor may be disposed at the tip of the stylus pen, inside the pen shaft, at the end of the pen shaft, or at other locations that can sense angle changes of the stylus pen.
[0078] In an exemplary embodiment, the controller is also used to obtain sensor data of the tilt sensor, and determine the tilt angle of the pen shaft relative to the horizontal plane based on the conduction condition, the sensor data and the sensor coefficient; the sensor data corresponds to the sensor coefficient.
[0079] The size of the sensor coefficient determines the contribution of the sensor data in the process of determining the tilt angle. That is, the larger the sensor coefficient, the more the calculation result of the tilt angle depends on the sensor data, and the smaller the sensor coefficient, the more the calculation result of the tilt angle depends on the conduction condition.
[0080] In this embodiment, the stylus pen also includes a tilt sensor, and the controller is also used to obtain sensor data of the tilt sensor, and determine the tilt angle of the pen shaft relative to the horizontal plane based on the conduction condition and the sensor data, so that the tilt angle of the pen shaft relative to the horizontal plane depends on both the conduction condition of the conductive contact point and the sensor data of the tilt sensor, thereby avoiding the inaccurate calculation result caused by a single calculation of the tilt angle, and thereby improving the accuracy of the calculation result of the tilt angle.
[0081] In an exemplary embodiment, the spacing between adjacent conductive layers along the first direction satisfies a preset spacing condition.
[0082] Among them, the spacing between adjacent conductive layers along the first direction satisfies the preset spacing condition, which can indicate that the spacing between adjacent conductive layers along the first direction is within the preset spacing range, or can indicate that the spacing between adjacent conductive layers along the first direction is less than the preset spacing. Optionally, the preset spacing range or the size of the preset spacing can be determined according to the size of the stylus, the capacity of the conductive liquid, or the target touch accuracy. Exemplarily, the size of the preset spacing is positively correlated with the size of the stylus, the size of the preset spacing is positively correlated with the capacity of the conductive liquid, and the size of the preset spacing is negatively correlated with the size of the target touch accuracy.
[0083] In this embodiment, the spacing between adjacent conductive layers along the first direction meets the preset spacing condition, thereby making the spacing between adjacent conductive layers along the first direction reasonable, avoiding the undesirable situation that the conductive liquid has difficulty conducting a sufficient number of conductive contact points and it is difficult to determine the inclination angle of the pen shaft relative to the horizontal plane due to excessive spacing, thereby improving the accuracy of the calculation result of the inclination angle and the efficiency of obtaining the calculation result of the inclination angle.
[0084] In an exemplary embodiment, a touch device is further provided, and the touch device includes the stylus described in any one of the above embodiments.
[0085] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0086] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A touch pen, characterized in that: The stylus pen comprises a pen holder, a conductive liquid bladder arranged inside the pen holder, and a controller; The conductive liquid gallbladder contains a flowable conductive liquid; the conductive liquid gallbladder is provided with a plurality of conductive layers on the inner wall; the spacing between adjacent conductive layers along the first direction is the same; each conductive layer includes a plurality of conductive contact points; each conductive contact point enters a conductive state after contacting the conductive liquid; the plurality of conductive contact points in the same conductive layer are evenly distributed along the center point of the plane where the second direction is located; each conductive contact point is connected to the controller; the first direction intersects with the second direction; The controller is used to obtain the conduction status of each of the conductive contact points included in each of the conductive layers to determine the inclination angle of the pen shaft relative to the horizontal plane.
2. The touch pen according to claim 1, characterized in that: The controller is also used to determine the inclination angle of the pen shaft relative to the horizontal plane based on the conductivity of at least one first conductive contact point in the first conductive layer and the conductivity of at least one second conductive contact point in the second conductive layer.
3. The touch pen according to claim 2, characterized in that: The first conductive layer is the highest layer in the first direction among the plurality of conductive layers, and the second conductive layer is an adjacent conductive layer to the first conductive layer.
4. The touch pen according to claim 3, characterized in that: The controller is also used to determine a target slope based on other first conductive contact points that have not entered the conductive state in the first conductive layer or other second conductive contact points that have not entered the conductive state in the second conductive layer when the number of the first conductive contact point that enters the conductive state is one and the number of the second conductive contact point that enters the conductive state is one, and determine the inclination angle of the pen shaft relative to the horizontal plane based on the target slope, the first conductive contact point that enters the conductive state, and the second conductive contact point that enters the conductive state.
5. The touch pen according to claim 3, characterized in that: The controller is also used to determine the inclination angle of the pen shaft relative to the horizontal plane based on the first conductive contact point entering the conductive state in the first conductive layer and the second conductive contact point entering the conductive state in the second conductive layer when the number of the first conductive contact points entering the conductive state is at least one and the number of the second conductive contact points entering the conductive state is at least two.
6. The touch pen according to claim 1, characterized in that: There is no conduction between the conductive layers, and there is no conduction between the conductive contact points.
7. The touch pen according to claim 1, characterized in that: The conductive liquid gallbladder is provided with a shock absorbing structure for reducing the flow amplitude of the conductive liquid.
8. The touch pen according to claim 1, characterized in that: The stylus pen further includes a tilt sensor; the controller is further configured to obtain sensor data of the tilt sensor, and determine a tilt angle of the pen shaft relative to a horizontal plane based on the conduction condition and the sensor data.
9. The touch pen according to claim 1, characterized in that: The spacing between adjacent conductive layers along the first direction meets a preset spacing condition.
10. A touch device, characterized in that: The touch device includes the touch pen as described in any one of claims 1-9.