Stylus, stylus position detection method, and display panel

Abstract

The application provides a stylus, a stylus position detection method and a display panel, and relates to the technical field of display panels.The stylus comprises a stylus body, a first signal emitting part, a second signal emitting part and a third signal emitting part.The stylus body comprises a first end part and a second end part.The first signal emitting part is located at the first end part.The first signal emitting part generates a first signal.The second signal emitting part is located at one side of the first signal emitting part close to the second end part, and the second signal emitting part generates a second signal.The third signal emitting part is located at one side of the second signal emitting part close to the second end part, and the third signal emitting part generates a third signal.Thus, by combining the first signal and the second signal, more accurate stylus positioning can be realized.Meanwhile, by calculating the tilt angle of the stylus through the third signal, the dynamic trajectory of the stylus can be determined, and the touch precision and touch effect are improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a stylus, a stylus position detection method, and a display panel. Background Technology

[0002] With the development of touch display technology, the application scenarios for touch display devices are gradually increasing. For example, touch display devices can be applied to foldable panels. Compared to non-foldable panels, the glass cover of foldable panels is thinner, which affects the touch effect of styluses on foldable panels and reduces touch accuracy. Summary of the Invention

[0003] To overcome the aforementioned shortcomings in the prior art, the purpose of this application is to provide a stylus, the stylus comprising:

[0004] The stylus body includes a first end and a second end;

[0005] A first signal transmitter is located at the first end; the first signal transmitter is connected to a first control circuit, which controls the first signal transmitter to generate a first signal.

[0006] The second signal transmitter is located on the side of the first signal transmitter near the second end. The second signal transmitter is connected to the second control circuit, which is used to control the second signal transmitter to generate a second signal.

[0007] A third signal transmitter is located on the side of the second signal transmitter near the second end. The third signal transmitter is connected to a third control circuit, which controls the third signal transmitter to generate a third signal. The first signal, the second signal, and the third signal are all different from each other.

[0008] In one possible implementation, the stylus body includes a pen barrel and a tapered pen tip; the tapered pen tip is located at a first end of the stylus body, and the first signal transmitting part is located at the top of the tapered pen tip;

[0009] The second signal transmitting part and the third signal transmitting part are in a ring shape, and the second signal transmitting part and the third signal transmitting part are coaxially arranged with the conical pen tip;

[0010] Preferably, the outer diameter of the third signal transmitter is larger than the outer diameter of the second signal transmitter;

[0011] Preferably, the distance between the third signal transmitter and the junction of the pen barrel and the conical pen tip is less than 10 mm; the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the first signal transmitter on the display panel is one-quarter to three-quarters of the distance between the orthographic projection of the first signal transmitter on the display panel and the orthographic projection of the third signal transmitter on the display panel.

[0012] Preferably, the third signal transmitter is located at the junction of the pen barrel and the tapered pen tip; the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the first signal transmitter on the display panel is equal to the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the third signal transmitter on the display panel.

[0013] Preferably, the second signal transmitting part and the third signal transmitting part are metal rings.

[0014] In one possible implementation, the second signal transmitting unit includes at least two first regions, each of which is connected to at least two second control circuits. The at least two second control circuits control the at least two first regions to generate the second signal, and the phase and / or frequency and / or voltage value of the second signals generated by the at least two first regions are different.

[0015] In one possible implementation, the third signal transmitting unit includes at least two second regions, each of which is connected to at least two third control circuits. The at least two third control circuits control the at least two second regions to generate the third signal, and the phase and / or frequency and / or voltage value of the third signal generated by the at least two second regions are different.

[0016] In one possible implementation, the second signal transmitting unit includes at least two first regions, and the third signal transmitting unit includes at least two second regions, with each of the at least two first regions corresponding to one of the at least two second regions.

[0017] In one possible implementation, the stylus includes a plurality of second signal transmitters, all of which are located on the side of the first signal transmitter near the second end.

[0018] Preferably, the plurality of second signal transmitters are equidistantly distributed.

[0019] In one possible implementation, the stylus further includes a control module, wherein at least two of the first control circuit, the second control circuit, and the third control circuit are connected to the control module, and the control module is used to control at least two of the first control circuit, the second control circuit, and the third control circuit to start working in a time-sharing manner;

[0020] Preferably, the control module is used to control the first control circuit, the second control circuit, and the third control circuit to start working in a time-sharing manner.

[0021] Another objective of this application is to provide a stylus position detection method, wherein the stylus position detection method uses the stylus provided in this application, and the method includes:

[0022] The display panel is controlled to couple with the first signal, the second signal and the third signal generated by the stylus, respectively generating a first coupling signal, a second coupling signal and a third coupling signal;

[0023] The touch position of the stylus on the display panel is determined based on the first coupling signal and the second coupling signal, and the tilt angle of the stylus relative to the display panel is determined based on the third coupling signal.

[0024] In one possible implementation, the step of determining the touch position of the stylus on the display panel based on the first coupling signal and the second coupling signal includes:

[0025] The touch position of the stylus on the display panel is determined based on the amplitude information of the first coupling signal and the distribution information of the second coupling signal.

[0026] Another object of this application is to provide a display panel, the display panel including the stylus position detection method provided in this application, the display panel including:

[0027] A coupling module is used to couple with the first signal, the second signal and the third signal generated by the stylus, respectively generating a first coupling signal, a second coupling signal and a third coupling signal;

[0028] The processing module is configured to determine the touch position of the stylus on the display panel based on the first coupling signal and the second coupling signal, and to determine the tilt angle of the stylus relative to the display panel based on the third coupling signal.

[0029] Compared with the prior art, this application has the following beneficial effects:

[0030] This application provides a stylus, a stylus position detection method, and a display panel. By combining a first signal and a second signal, the touch position of the stylus on the display panel can be accurately calculated to achieve more precise stylus positioning. At the same time, by calculating the tilt angle of the stylus through a third signal, the dynamic trajectory of the stylus can be determined, thereby improving touch accuracy and touch effect. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a stylus in the prior art;

[0033] Figure 2 This is a schematic diagram of the signal amplitude of a display panel in the prior art;

[0034] Figure 3 This is one of the structural schematic diagrams of the stylus provided in the embodiments of this application;

[0035] Figure 4 This is a schematic diagram of the signal amplitude of the display panel provided in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the distribution of the first signal in the prior art;

[0037] Figure 6 One of the schematic diagrams showing the distribution of the first and second signals provided in the embodiments of this application;

[0038] Figure 7a This is one of the structural schematic diagrams of the second signal transmitting unit provided in the embodiments of this application;

[0039] Figure 7b A second schematic diagram showing the distribution of the first and second signals provided in an embodiment of this application;

[0040] Figure 8a This is a second schematic diagram of the structure of the second signal transmitting unit provided in the embodiments of this application;

[0041] Figure 8b The third schematic diagram showing the distribution of the first and second signals provided in the embodiments of this application;

[0042] Figure 9 This is one of the structural schematic diagrams of the third signal transmitting unit provided in the embodiments of this application;

[0043] Figure 10 This is a second schematic diagram of the structure of the third signal transmitting unit provided in the embodiments of this application;

[0044] Figure 11 This is a schematic diagram of the structure of the second signal transmitting unit and the third signal transmitting unit provided in the embodiments of this application;

[0045] Figure 12 This is the second schematic diagram of the structure of the stylus provided in the embodiments of this application;

[0046] Figure 13 A schematic flowchart illustrating the stylus position detection method provided in this application embodiment;

[0047] Figure 14 This is a schematic diagram of the functional modules of the display panel provided in an embodiment of this application.

[0048] Icons: 110 - First signal transmitter; 120 - Second signal transmitter; 121 - First region; 130 - Third signal transmitter; 131 - Second region; 210 - First end; 220 - Second end; 310 - First coupling signal; 320 - Second coupling signal; 330 - Third coupling signal; 410 - Coupling module; 420 - Processing module. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0054] The inventor's research revealed that, in existing technologies, please refer to... Figure 1 The stylus typically generates a first signal by controlling the first signal transmitter 110' via the first control circuit to detect the touch position of the stylus on the display panel. Simultaneously, the stylus can also generate a third signal by controlling the third signal transmitter 130' via the third control circuit to detect the tilt angle of the stylus relative to the display panel. Please refer to... Figure 2 , Figure 2 The example is a schematic diagram of the signal amplitude on the display panel in the prior art. The horizontal axis represents the position of the display panel and the vertical axis represents the signal amplitude value. The signal strength on the display panel is the highest at the touch position, and the signal strength decreases non-linearly with the increase of distance from the touch position. In addition, compared with the non-folding panel, the folding panel has a faster attenuation rate and poorer divergence, and the signal coverage area is smaller, which makes it impossible to accurately locate the touch position of the stylus on the display panel.

[0055] In view of this, this embodiment provides a solution that can solve the above problems. The solution provided in this embodiment will be described in detail below.

[0056] Please refer to Figure 3 , Figure 3 Example: The schematic diagram of the stylus provided in this embodiment shows that the stylus may include a stylus body, a first signal transmitter 110, a second signal transmitter 120 and a third signal transmitter 130.

[0057] In this embodiment, the stylus can be an active capacitive stylus.

[0058] The stylus body may include a first end 210 and a second end 220.

[0059] The first signal transmitter 110 may be located at the first end 210. The first signal transmitter 110 may be connected to the first control circuit. The first control circuit may be used to control the first signal transmitter 110 to generate a first signal.

[0060] In this embodiment, the first control circuit can be a first signal generator circuit. When the stylus body is close to the display panel, the first signal generator circuit can control the first signal transmitter 110 to generate a first signal. The first signal is used to couple with the display panel, so that the display panel generates a first coupling signal 310, thereby detecting the touch position of the stylus on the display panel according to the first coupling signal 310.

[0061] The second signal transmitter 120 may be located on the side of the first signal transmitter 110 near the second end 220. The second signal transmitter 120 may be connected to the second control circuit, which may be used to control the second signal transmitter 120 to generate a second signal.

[0062] In this embodiment, the second control circuit can be a second signal generator circuit. When the stylus body is close to the display panel, the second signal generator circuit can control the second signal transmitter 120 to generate a second signal. The second signal is used to couple with the display panel, so that the display panel generates a second coupling signal 320, which facilitates the improvement of the stylus positioning accuracy based on the first coupling signal 310 and the second coupling signal 320.

[0063] Specifically, please refer to Figure 4 The second signal transmitter 120 can be located between the first signal transmitter 110 and the third signal transmitter 130. The first signal transmitter 110 is closest to the display panel, so the first coupling signal 310 generated by the display panel has the largest signal amplitude, but also the worst signal divergence. The third signal transmitter 130 is furthest from the display panel, so the third coupling signal 330 generated by the display panel has the smallest signal amplitude, but also the largest signal divergence. It cannot locate the touch position of the stylus on the display panel, but can only detect the tilt angle of the stylus relative to the display panel.

[0064] The signal amplitude of the second coupling signal 320 generated by the display panel is less than the signal amplitude of the first coupling signal 310 generated by the display panel, but greater than the signal amplitude of the third coupling signal 330 generated by the display panel. Furthermore, the signal divergence of the second coupling signal 320 generated by the display panel is also very good. Therefore, the touch position of the stylus on the display panel can be determined based on the first coupling signal 310 and the second coupling signal 320 generated by the display panel.

[0065] Please refer to Figure 5 , Figure 5The example illustrates the signal distribution on a folding panel in the prior art, where the signal proportion of the first layer is greater than 90%, the signal proportion of the second layer is less than 10%, and the signal proportion of the third layer is less than 10%. In this embodiment, please refer to... Figure 6 By adding a second signal transmitter 120 to generate a second signal coupled to the display panel, the signal divergence can be improved while ensuring signal strength, so that the signal ratio of the first layer is greater than 50%, the signal ratio of the second layer is less than 20%, and the signal ratio of the third layer is less than 20%. The first layer can refer to the region (X0, Y0), the second layer can refer to the regions (X1, Y1), (X1, Y0), (X1, Y-1), (X0, Y-1), (X-1, Y-1), (X-1, Y0), (X-1, Y1) and (X0, Y1), and the third layer can refer to the regions (X-2, Y2), (X-1, Y2), (X0, Y2), (X1, Y2), (X2, Y2), (X2, Y1), (X2, Y0), (X2, Y-1), (X2, Y-2), (X1, Y-2), (X0, Y-2), (X-1, Y-2), (X-2, Y-2), (X-2, Y-1), (X-2, Y0), (X-2, Y1) and (X-2, Y2).

[0066] The third signal transmitter 130 may be located on the side of the second signal transmitter 120 near the second end 220. The third signal transmitter 130 may be connected to a third control circuit, which may be used to control the third signal transmitter 130 to generate a third signal. The first signal, the second signal, and the third signal are different from each other.

[0067] In this embodiment, the third control circuit can be a third signal generator circuit. When the stylus body approaches the display panel, the third signal generator circuit can control the third signal transmitter 130 to generate a third signal. The third signal is used to couple with the display panel, causing the display panel to generate a third coupling signal 330. The tilt angle of the stylus relative to the display panel is then detected based on the third coupling signal 330. The phase and / or frequency and / or voltage values ​​of the first signal, the second signal, and the third signal are different.

[0068] By detecting the tilt angle of the stylus relative to the display panel, the thickness of the stylus strokes, the depth of color, the position of the pen tip, or the writing speed can be controlled according to the tilt angle, thereby improving the writing experience and accuracy.

[0069] Based on the above design, in the stylus provided in this embodiment, by combining the first signal and the second signal, the touch position of the stylus on the display panel can be accurately calculated to achieve more precise stylus positioning. At the same time, by calculating the tilt angle of the stylus through the third signal, the dynamic trajectory of the stylus can be determined, thereby improving touch accuracy and touch effect.

[0070] In one possible implementation, please refer again. Figure 3 The stylus body may include a pen barrel and a tapered pen tip. The tapered pen tip may be located at the first end 210 of the stylus body, and the first signal transmitter 110 may be located at the top of the tapered pen tip. The second signal transmitter 120 and the third signal transmitter 130 may be annular and coaxially arranged with the tapered pen tip. The outer diameter of the third signal transmitter 130 may be larger than the outer diameter of the second signal transmitter 120.

[0071] In addition, the distance between the third signal transmitter 130 and the junction of the pen barrel and the conical pen tip can be less than 10 mm. In some examples, the third signal transmitter 130 can be located 10 mm away from the second end 220 at the junction of the pen barrel and the conical pen tip, or it can be located 10 mm closer to the second end 220 at the junction of the pen barrel and the conical pen tip. Preferably, the third signal transmitter 130 can be located at the junction of the pen barrel and the conical pen tip.

[0072] The distance between the orthographic projection of the second signal transmitter 120 on the display panel and the orthographic projection of the first signal transmitter 110 on the display panel is one-quarter to three-quarters of the distance between the orthographic projection of the first signal transmitter 110 on the display panel and the orthographic projection of the third signal transmitter 130 on the display panel.

[0073] In this embodiment, the orthographic projection of the second signal transmitter 120 on the display panel can be located between the orthographic projections of the first signal transmitter 110 and the third signal transmitter 130 on the display panel. There can be only one second signal transmitter 120. The distance between the orthographic projection of the second signal transmitter 120 and the orthographic projection of the first signal transmitter 110 on the display panel is half the distance between the orthographic projections of the first and third signal transmitters 130 on the display panel. That is, the distance L1 between the orthographic projections L1 and L2 between the second and third signal transmitters 120 on the display panel can be equal to the distance L2 between the orthographic projections L2 and L30 on the display panel.

[0074] Specifically, the first signal transmitter 110 can be located at the tip of the conical pen tip, and the first signal transmitter 110 can be a metal ball. The second signal transmitter 120 and the third signal transmitter 130 can be metal rings surrounding the stylus. The outer diameter of the second signal transmitter 120 can be smaller than the outer diameter of the third signal transmitter 130. The stylus barrel can be a hollow structure with a receiving cavity, and the first control circuit, the second control circuit, and the third control circuit can all be located within this receiving cavity.

[0075] In one possible implementation, the second signal transmitting unit 120 may include at least two first regions 121, which may be connected to at least two second control circuits respectively. The at least two second control circuits may control the at least two first regions 121 to generate second signals respectively, and the phase and / or frequency and / or voltage value of the second signals generated by the at least two first regions 121 are different.

[0076] In this embodiment, the second signal transmitting unit 120 may include at least two first regions 121, and the at least two first regions 121 may generate different second signals respectively. Specifically, the at least two first regions 121 may generate different second signals at different time periods. Thus, the second signal corresponding to each first region 121 has specific position information on the display panel. When the stylus is rotated, the positions of the different second signals on the display panel will change, which facilitates the calculation of the stylus rotation angle and rotation speed, thereby making it applicable to different applications.

[0077] In some examples, a second control circuit can control a first region 121 to generate a second signal during a first time period. This second signal can be used to couple with the display panel, causing the display panel to generate a second coupling signal 320. Another second control circuit can control another first region 121 to generate a second signal during a second time period. This second signal can be used to couple with the display panel, causing the display panel to generate another different second coupling signal 320. When the stylus is rotated, the positions of these two different second coupling signals 320 on the display panel change with the rotation of the stylus. Thus, the angle and speed of the stylus rotation can be calculated based on the changes in the positions of these two different second coupling signals 320 on the display panel. The first time period can be adjacent to the second time period, and the second time period can be after the first time period.

[0078] In one possible implementation, please refer to Figure 7a and Figure 7b , Figure 7a Example: Schematic diagram of the structure of the second signal transmitter 120. Figure 7b Example Figure 7aThe corresponding signal distribution diagram shows that the second signal transmitter 120 may include two first regions 121, and both first regions 121 are semi-circular. The two first regions 121 can be connected to two independent second control circuits respectively. The two second control circuits can control the two first regions 121 to generate different second signals respectively, so as to accurately identify the rotation state of the stylus.

[0079] In another possible implementation, please refer to Figure 8a and Figure 8b , Figure 8a Example: Schematic diagram of the structure of the second signal transmitter 120. Figure 8b Example Figure 8a The corresponding signal distribution diagram shows that the second signal transmitting unit 120 may include three first regions 121, and all three first regions 121 are arc-shaped. The angles corresponding to the three arc-shaped regions can all be 120°. The three first regions 121 can be connected to three independent second control circuits respectively. The three second control circuits can control the three first regions 121 to generate different second signals respectively, so as to improve the sensitivity and stability of rotation detection.

[0080] It should be noted that the number of 121 in the first area is not limited to two or three, but can also be four, six, etc., and can be designed according to actual needs. No specific limitation is made here.

[0081] In one possible implementation, the third signal transmitting unit 130 may include at least two second regions 131, which may be connected to at least two third control circuits respectively. The at least two third control circuits may control the at least two second regions 131 to generate third signals at different time periods, and the phase and / or frequency and / or voltage value of the third signals generated by the at least two second regions 131 are different.

[0082] In this embodiment, the third signal transmitting unit 130 may include at least two second regions 131, and each of the at least two second regions 131 can generate a different third signal. Specifically, the at least two second regions 131 can generate different third signals at different time periods. Thus, the third signal corresponding to each second region 131 has specific position information on the display panel. When the stylus is rotated, the positions of the different third signals on the display panel will change, which facilitates the calculation of the stylus rotation angle and rotation speed, thereby making it applicable to different applications.

[0083] In some examples, a third control circuit can control a second region 131 to generate a third signal in a first time period. This third signal can be used to couple with the display panel, causing the display panel to generate a third coupling signal 330. Another third control circuit can control another second region 131 to generate a third signal in a second time period. This third signal can be used to couple with the display panel, causing the display panel to generate another different third coupling signal 330. When the stylus is rotated, the positions of these two different third coupling signals 330 on the display panel change with the rotation of the stylus. Thus, the angle and speed of the stylus rotation can be calculated based on the changes in the positions of these two different third coupling signals 330 on the display panel. The first time period can be adjacent to the second time period, and the second time period can be after the first time period.

[0084] In one possible implementation, please refer to Figure 9 The third signal transmitter 130 may include two second regions 131, both of which are semi-circular. The two second regions 131 may be connected to two independent third control circuits respectively. The two third control circuits may control the two second regions 131 to generate different third signals at different time periods in order to accurately identify the rotation state of the stylus.

[0085] In another possible implementation, please refer to Figure 10 The third signal transmitting unit 130 may include three second regions 131, and all three second regions 131 are arc-shaped. The angles corresponding to the three arc-shaped regions can all be 120°. The three second regions 131 can be connected to three independent third control circuits respectively. The three third control circuits can control the three second regions 131 to generate different third signals at different time periods to improve the sensitivity and stability of rotation detection.

[0086] It should be noted that the number of the second area 131 is not limited to two or three, but can also be four, six, etc., and can be designed according to actual needs. No specific limitation is made here.

[0087] In one possible implementation, the second signal transmitting unit 120 may include at least two first regions 121, and the third signal transmitting unit 130 may include at least two second regions 131, with each of the at least two first regions 121 corresponding to one of the at least two second regions 131.

[0088] In this embodiment, while dividing the second signal transmitting unit 120 into partitions to generate different second signals, the third signal transmitting unit 130 can also be divided into partitions to generate different third signals. The number of first regions 121 can be equal to the number of second regions 131, and the first regions 121 and the second regions 131 correspond one-to-one.

[0089] In some examples, please refer to Figure 11 When the second signal transmitting unit 120 includes two first regions 121, the third signal transmitting unit 130 also includes two second regions 131, and the two first regions 121 and the two second regions 131 correspond to each other. Specifically, one second control circuit can control one first region 121 to generate a second signal during a first time period. This second signal can be used to couple with the display panel, causing the display panel to generate a second coupling signal 320. Another second control circuit can control another first region 121 to generate a second signal during a second time period. This second signal can be used to couple with the display panel, causing the display panel to generate another different second coupling signal 320. A third control circuit can control one second region 131 to generate a third signal during a third time period. This third signal can be used to couple with the display panel, causing the display panel to generate a third coupling signal 330. Another third control circuit can control another second region 131 to generate a third signal during a fourth time period. This third signal can be used to couple with the display panel, causing the display panel to generate another different third coupling signal 330. When the stylus is rotated, the positions of the two different second coupling signals 320 and the two different third coupling signals 330 on the display panel change with the rotation of the stylus. Thus, the rotation angle and rotation speed of the stylus can be calculated based on the position changes of the second coupling signals 320 and the third coupling signals 330 on the display panel. Compared to calculating the rotation angle and rotation speed of the stylus using only the second coupling signal 320 or the third coupling signal 330, combining the position changes of the second coupling signal 320 and the third coupling signal 330 on the display panel can improve the accuracy of calculating the rotation angle and rotation speed of the stylus.

[0090] In one possible implementation, the stylus may include a plurality of second signal transmitters 120, all of which may be located on the side of the first signal transmitter 110 near the second end 220. The spacing between adjacent second signal transmitters 120 is equal.

[0091] In this embodiment, multiple second signal transmitters 120 can be located between the first signal transmitter 110 and the third signal transmitter 130, and each of the multiple second signal transmitters 120 can be ring-shaped. The outer diameters of the multiple second signal transmitters 120 are different, and the spacing between the orthographic projections of adjacent second signal transmitters 120 on the display panel is equal. Each of the multiple second signal transmitters 120 can be connected to multiple second control circuits to generate different second signals at different time periods.

[0092] With this design, the touch position of the stylus on the display panel can be determined more accurately based on the second signals generated by the multiple second signal transmitters 120 and the first signal transmitter 110, thereby improving the touch accuracy of the stylus.

[0093] For example, please refer to Figure 12 The stylus may include three second signal transmitters 120. The orthographic projections of the three second signal transmitters 120 on the display panel are all located between the orthographic projections of the first signal transmitter 110 and the third signal transmitter 130 on the display panel, and the spacing L3 between the orthographic projections of the three second signal transmitters 120 is equal, forming an equidistant distribution.

[0094] It should be noted that the number of second signal transmitters 120 is not limited to three; it can also be two, four, etc. The specific number can be adjusted according to the actual application scenario and needs, and no specific limit is made here.

[0095] In one possible implementation, the stylus may further include a control module, with at least two of the first, second, and third control circuits connected to the control module. The control module can be used to control at least two of the first, second, and third control circuits to start working in a time-sharing manner.

[0096] In this embodiment, during the first time period, the control module can control only the first control circuit to start working and generate the first signal; during the second time period, the control module can control only the second control circuit to start working and generate the second signal; during the third time period, the control module can control only the third control circuit to start working and generate the third signal. In this way, through time-division control, signal interference can be effectively avoided, the problem of rapid signal attenuation can be compensated, and the positioning of the stylus can be made more accurate.

[0097] In addition, for some applications where the touch accuracy of the stylus is not high, the first and third control circuits can be controlled by the control module alone, while the second control circuit can be turned off to save power.

[0098] This embodiment also provides a stylus position detection method. The stylus position detection method can use the stylus provided in this application. Please refer to [reference needed]. Figure 13 The stylus position detection method can be implemented using the following steps.

[0099] Step S110: Control the display panel to couple with the first signal, the second signal and the third signal generated by the stylus, so as to generate a first coupling signal 310, a second coupling signal 320 and a third coupling signal 330 respectively.

[0100] In this embodiment, the display panel can be coupled with a first signal generated by the stylus in a first time period and a second signal generated in a second time period to generate a first coupling signal 310 and a second coupling signal 320, respectively; the display panel can also be coupled with a third signal generated by the stylus in a third time period to generate a third coupling signal 330, wherein the first signal, the second signal and the third signal are different from each other.

[0101] For example, the first signal generated by the stylus may include an electromagnetic or capacitive signal with a specific varying frequency. When the stylus is close to the display panel, the coil or capacitor trace electrodes provided in the display panel couple with the first signal generated by the stylus, generating a first coupling signal 310.

[0102] Step S120: Determine the touch position of the stylus on the display panel according to the first coupling signal 310 and the second coupling signal 320, and determine the tilt angle of the stylus relative to the display panel according to the third coupling signal 330.

[0103] In this embodiment, the display panel can calculate the coordinate information of the stylus on the display panel based on the first coupling signal 310 and the second coupling signal 320 generated in step S110, and can also calculate the tilt angle of the stylus relative to the display panel based on the third coupling signal 330 generated in step S110, thereby achieving more precise touch operation.

[0104] In the above design, by combining the first coupling signal 310 and the second coupling signal 320 to calculate the touch position of the stylus on the display panel, more accurate stylus positioning can be achieved. At the same time, by combining the third coupling signal 330 to calculate the tilt angle of the stylus, the dynamic trajectory of the stylus can be determined, thereby improving touch accuracy and touch effect.

[0105] In one possible implementation, when determining the touch position of the stylus on the display panel based on the first coupling signal 310 and the second coupling signal 320, the touch position of the stylus on the display panel can be determined based on the amplitude information of the first coupling signal 310 and the distribution information of the second coupling signal 320.

[0106] In this embodiment, the specific position of the stylus on the display panel can be accurately calculated based on the amplitude information provided by the first coupling signal 310 and the distribution information provided by the second coupling signal 320, thereby achieving more accurate stylus positioning.

[0107] Please refer to Figure 14 This embodiment also provides a display panel, which may include the stylus position detection method provided in this application. The display panel may include a coupling module 410 and a processing module 420. Wherein:

[0108] The coupling module 410 can be used to couple with the first signal, the second signal and the third signal generated by the stylus, respectively generating the first coupling signal 310, the second coupling signal 320 and the third coupling signal 330.

[0109] The processing module 420 can be used to determine the touch position of the stylus on the display panel according to the first coupling signal 310 and the second coupling signal 320, and to determine the tilt angle of the stylus relative to the display panel according to the third coupling signal 330.

[0110] In summary, the embodiments of this application provide a stylus, a stylus position detection method, and a display panel. By combining the first signal and the second signal, the touch position of the stylus on the display panel can be accurately calculated to achieve more precise stylus positioning. At the same time, by calculating the tilt angle of the stylus through the third signal, the dynamic trajectory of the stylus can be determined, thereby improving touch accuracy and touch effect.

[0111] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0112] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A stylus, characterized in that, include: The stylus body includes a first end and a second end; A first signal transmitter is located at the first end; The first signal transmitter is connected to the first control circuit, which controls the first signal transmitter to generate a first signal. The second signal transmitter is located on the side of the first signal transmitter near the second end. The second signal transmitter is connected to the second control circuit, which is used to control the second signal transmitter to generate a second signal. A third signal transmitter is located on the side of the second signal transmitter near the second end. The third signal transmitter is connected to a third control circuit, which controls the third signal transmitter to generate a third signal. The first signal, the second signal, and the third signal are all different from each other.

2. The stylus according to claim 1, characterized in that, The stylus body includes a pen barrel and a tapered pen tip; the tapered pen tip is located at the first end of the stylus body, and the first signal transmitting part is located at the top of the tapered pen tip; The second signal transmitting part and the third signal transmitting part are in a ring shape, and the second signal transmitting part and the third signal transmitting part are coaxially arranged with the conical pen tip; Preferably, the outer diameter of the third signal transmitter is larger than the outer diameter of the second signal transmitter; Preferably, the distance between the third signal transmitter and the junction of the pen barrel and the conical pen tip is less than 10 mm; the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the first signal transmitter on the display panel is one-quarter to three-quarters of the distance between the orthographic projection of the first signal transmitter on the display panel and the orthographic projection of the third signal transmitter on the display panel. Preferably, the third signal transmitter is located at the junction of the pen barrel and the tapered pen tip; the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the first signal transmitter on the display panel is equal to the distance between the orthographic projection of the second signal transmitter on the display panel and the orthographic projection of the third signal transmitter on the display panel. Preferably, the second signal transmitting part and the third signal transmitting part are metal rings.

3. The stylus according to claim 1, characterized in that, The second signal transmitting unit includes at least two first regions, each of which is connected to at least two second control circuits. The at least two second control circuits control the at least two first regions to generate the second signal, and the phase and / or frequency and / or voltage value of the second signal generated by the at least two first regions are different.

4. The stylus according to claim 1, characterized in that, The third signal transmitting unit includes at least two second regions, each of which is connected to at least two third control circuits. The at least two third control circuits control the at least two second regions to generate the third signal, and the phase and / or frequency and / or voltage value of the third signal generated by the at least two second regions are different.

5. The stylus according to claim 1, characterized in that, The second signal transmitting unit includes at least two first regions, and the third signal transmitting unit includes at least two second regions, with each of the at least two first regions corresponding to one of the at least two second regions.

6. The stylus according to claim 1, characterized in that, The stylus includes a plurality of second signal transmitters, all of which are located on the side of the first signal transmitter near the second end. Preferably, the plurality of second signal transmitters are equidistantly distributed.

7. The stylus according to claim 1, characterized in that, The stylus also includes a control module, wherein at least two of the first control circuit, the second control circuit, and the third control circuit are connected to the control module, and the control module is used to control at least two of the first control circuit, the second control circuit, and the third control circuit to start working in a time-sharing manner; Preferably, the control module is used to control the first control circuit, the second control circuit, and the third control circuit to start working in a time-sharing manner.

8. A stylus position detection method, characterized in that, Using the stylus according to any one of claims 1-7, the method comprises: The display panel is controlled to couple with the first signal, the second signal and the third signal generated by the stylus, respectively generating a first coupling signal, a second coupling signal and a third coupling signal; The touch position of the stylus on the display panel is determined based on the first coupling signal and the second coupling signal, and the tilt angle of the stylus relative to the display panel is determined based on the third coupling signal.

9. The stylus position detection method according to claim 8, characterized in that, The step of determining the touch position of the stylus on the display panel based on the first coupling signal and the second coupling signal includes: The touch position of the stylus on the display panel is determined based on the amplitude information of the first coupling signal and the distribution information of the second coupling signal.

10. A display panel, characterized in that, The display panel uses the stylus position detection method according to any one of claims 8-9; The display panel includes: A coupling module is used to couple with the first signal, the second signal and the third signal generated by the stylus, respectively generating a first coupling signal, a second coupling signal and a third coupling signal; The processing module is configured to determine the touch position of the stylus on the display panel based on the first coupling signal and the second coupling signal, and to determine the tilt angle of the stylus relative to the display panel based on the third coupling signal.

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