Electronic pen, electronic device and control method

Abstract

The invention discloses an electronic pen, electronic equipment and a control scheme of the electronic equipment, the electronic pen comprises a pen container and a pen eraser module, and the pen container is provided with a mounting cavity; the pen eraser module is mounted at one end of the pen container and comprises a control module, at least two infrared light sources and a trigger assembly, and the control module is mounted in the mounting cavity; the at least two infrared light sources are installed on the pen container and electrically connected with the control module, the infrared light sources emit infrared light to the outside, and two of the at least two infrared light sources have different light emitting directions; the triggering assembly is electrically connected with the control module, at least part of the triggering assembly extends out of one end of the pen container, and the triggering assembly is used for sending a switching signal to the control module so that the control module can control the infrared light source to emit infrared light. According to the technical scheme, unnecessary erasing operation when the electronic pen is touched by mistake or a conductive object is close to the touch display screen can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an electronic pen, an electronic device and a control method. BACKGROUND

[0002] The electronic pen can be used in cooperation with the electronic device, and through moving the relative position of the electronic pen and the electronic device, the user can write and draw or erase on the display screen of the electronic device. However, sometimes the electronic pen may be mis-triggered, resulting in the written content being mistakenly erased. In addition, when other conductive objects contact the electronic device, the electronic device may be interfered, resulting in the written content being erased, which will affect the user experience. SUMMARY

[0003] The electronic pen, the electronic device and the control method provided by the embodiments of the present application can effectively avoid unnecessary erasing operation when the electronic pen is mis-triggered or a conductive object is close to the touch display screen.

[0004] In a first aspect, the embodiments of the present application provide an electronic pen, comprising a pen barrel and a pen eraser module, the pen barrel has a mounting cavity; the pen eraser module is installed at one end of the pen barrel, and the pen eraser module comprises a control module, at least two infrared light sources and a trigger assembly, the control module is installed in the mounting cavity; the at least two infrared light sources are installed on the pen barrel and electrically connected with the control module, the infrared light sources emit infrared light to the outside, and there are two different light emitting directions in the at least two infrared light sources; the trigger assembly is electrically connected with the control module, and at least part of the trigger assembly extends from one end of the pen barrel, the trigger assembly is used to send an on-off signal to the control module, so that the control module controls the infrared light sources to emit infrared light.

[0005] Based on the electronic pen of the embodiments of the present application, by setting the infrared light source, the control module and the trigger assembly on the pen eraser module, the protection of the pen eraser module mis-triggering or the conductive object close to the touch display screen causing the written content to be deleted can be realized. Specifically, when the trigger assembly is triggered, it will send a signal to the control module, and the control module will control the infrared light source to emit infrared light to the detection module of the infrared touch screen. After the detection module of the infrared touch screen receives the signal emitted by the electronic pen, it is compared with the preset ID code. If the matching is successful, the touch display screen will execute the erasing operation according to the user's touch information, and if the matching is unsuccessful, the touch display screen will not execute the erasing operation. In this way, unnecessary erasing operation can be effectively avoided when the electronic pen is mis-triggered or the conductive object is close to the touch display screen, and the user experience and the safety of the written content are improved.

[0006] In a possible implementation manner, the infrared light source comprises a first light source and a second light source, and the light emitting directions of the first light source and the second light source are oppositely arranged.

[0007] In the present embodiment, thus, the infrared light emitted by the infrared light source can ensure that the signal emitted by the electronic pen can be received by the detection module at any position on the screen.

[0008] In a possible implementation, the pen barrel comprises a non-light-transmitting main body part and a light-transmitting part connected to the main body part, and the main body part and the light-transmitting part enclose a mounting cavity;

[0009] The infrared light source emits infrared light to the outside through the light-transmitting part.

[0010] In a possible implementation, the light-transmitting part comprises a first part corresponding to the first light source and a second part corresponding to the second light source.

[0011] In the present embodiment, one infrared light source corresponds to one light-transmitting part, which can ensure that the infrared light emitted by each infrared light source can be emitted in the expected direction, improve the receiving efficiency and accuracy of the infrared signal by the detection module of the infrared touch screen, and prevent the light emitted by the first light source from interfering with the light emitted by the second light source. This helps to ensure that the infrared light emitted by each light source does not interfere with each other.

[0012] In a possible implementation, the outer wall surface of the light-transmitting part is a plane.

[0013] In the present embodiment, the flat outer wall surface can reduce the reflection and scattering of light in the light-transmitting part, and also reduce the deflection and distortion of light in the light-transmitting part, thereby improving the transmission efficiency of light and reducing the distortion of light.

[0014] In a possible implementation, the pen barrel further comprises a mounting bracket, the mounting bracket is mounted in the mounting cavity, the mounting bracket is provided with a receiving cavity and has a light outlet hole in communication with the receiving cavity, the control module and the infrared light source are arranged in the receiving cavity, and the infrared light source is arranged in position with the light outlet hole.

[0015] In the present embodiment, the mounting bracket can provide additional support and fixation, so that the control module and the infrared light source can be stably installed in the mounting cavity, and the control module and the infrared light source can be protected to improve the service life. The light outlet hole can avoid the mounting bracket blocking the light emitted by the infrared light source, and facilitate the infrared light source to emit infrared light outward.

[0016] In a possible implementation, the control module comprises a circuit board, the infrared light source is fixed on the circuit board, the trigger assembly comprises a tactile switch and a pen cap, the pen cap is sleeved on the tactile switch, and the tactile switch is fixed on the circuit board.

[0017] The mounting bracket is further provided with an avoiding opening in communication with the receiving cavity, the pen cap is arranged through the avoiding opening and partially extends out of the pen barrel.

[0018] In a possible implementation, the mounting support includes a first support and a second support which are detachably connected, the first support and the second support are clamped and fixed on opposite sides of the circuit board, and one of the first support and the second support is provided with the light outlet hole.

[0019] The second support includes a mounting base and an end cover which are connected; the mounting base is detachably connected with the first support; the end cover is arranged on the same side of the mounting base and the first support, covers one end of the pen barrel, and is provided with the avoiding opening.

[0020] In a possible implementation, the control module further includes a control chip mounted on the circuit board, and the mounting support is provided with an avoiding groove corresponding to the control chip.

[0021] In the implementation, by setting the avoiding groove to correspond to the shape and size of the specific control chip, the space can be maximally utilized, and the structure between the control chip and the mounting support is more compact and effective.

[0022] In a possible implementation, the outer wall surface of the mounting support and the pen barrel are provided with a limiting groove and a limiting rib which are inserted and matched with each other between the cavity walls of the mounting cavity.

[0023] In a second aspect, the embodiments of the present application provide an electronic device, which includes an infrared touch screen and the electronic pen described above; the infrared touch screen includes a touch display screen and a detection module arranged around the touch display screen.

[0024] In the present application, by additionally arranging the detection module around the touch display screen and arranging the infrared light source on the electronic pen, the touch display screen can quickly respond to the electronic pen to perform corresponding work. Compared with the touch screen with an electromagnetic film, the installation of the infrared touch screen in the embodiments of the present application is simpler and has lower cost.

[0025] In a third aspect, the embodiments of the present application provide a control method of an electronic device, the electronic device including an infrared touch screen and an electronic pen; the electronic pen including a pen barrel, a pen tip module arranged at one end of the pen barrel, and a pen eraser module arranged at the other end of the pen barrel.

[0026] The method includes:

[0027] When the first infrared signal sent by the pen eraser module is received, the first infrared signal is compared with a preset signal, and it is determined according to a comparison result that the infrared touch screen has an erasing action, and the infrared touch screen is controlled to respond to the erasing action.

[0028] When the second infrared signal sent by the pen tip module is received, the second infrared signal is compared with a preset signal, and it is determined according to a comparison result that the infrared touch screen has a writing action, and the infrared touch screen is controlled to respond to the writing action.

[0029] When the first infrared signal sent by the eraser module and the second infrared signal sent by the pen tip module are received, the first infrared signal is compared with a preset signal, and according to the comparison result, it is determined that the infrared touch screen has an erasing action, and the infrared touch screen is controlled to respond to the erasing action. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0031] Figure 1 Part structure diagram of the electronic pen of the embodiment of the present application;

[0032] Figure 2 One of the exploded views of the electronic pen of the embodiment of the present application;

[0033] Figure 3 The second exploded view of the electronic pen of the embodiment of the present application;

[0034] Figure 4 The cross-sectional view of the electronic pen of the embodiment of the present application;

[0035] Figure 5 The structure diagram of the infrared touch screen of the embodiment of the present application;

[0036] Figure 6 Flowchart of the method of the embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 10, electronic pen; 100, pen barrel; 110, main body part; 120, light transmission part; 121, first part; 122, second part; 130, mounting cavity; 140, limiting groove; 200, eraser module; 210, control module; 211, circuit board; 212, control chip; 220, infrared light source; 221, first light source; 222, second light source; 230, trigger assembly; 231, light touch switch; 232, pen cap; 240, mounting bracket; 241, storage cavity; 242, light outlet hole; 243, avoiding opening; 244, first bracket; 245, second bracket; 2451, mounting seat; 2452, end cover; 246, avoiding groove; 247, limiting rib; 20, infrared touch screen; 21, touch display screen; 22, detection module.

[0039] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0041] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0042] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0044] The electronic pen includes a pen barrel, a pen tip module and a pen eraser module. The pen tip module and the pen eraser module are both installed in the pen barrel. The pen tip module is located at one end of the pen barrel, and the pen eraser module is located at the other end of the pen barrel. The user can hold the pen barrel to move the electronic pen.

[0045] The electronic pen is used in conjunction with an electronic device. When the pen tip module is facing the electronic device, the pen can be moved to write and draw on the electronic device's display. When the eraser module is facing the electronic device, the pen can be moved to erase the text and drawings on the electronic device's display. This achieves paperless writing and is environmentally friendly.

[0046] However, when the eraser assembly of the electronic pen in the prior art is accidentally touched, the eraser module is likely to erase the written content, or when other conductive objects are used to touch the electronic device, the electronic device is easily affected and the written content is erased, affecting the user experience.

[0047] Embodiments of the present application provide an electronic pen and an electronic device to solve the above technical problems. The electronic device comprises an electronic pen 10 and an infrared touch screen 20, and the electronic pen 10 and the infrared touch screen 20 are used in cooperation.

[0048] Referring to Figure 5 , the infrared touch screen 20 comprises a touch display screen 21 and a detection module 22 arranged around the touch display screen 21. The detection module 22 can comprise a circuit board and a photosensitive element arranged on the circuit board. The photosensitive element can be a photodiode or a phototriode. The photosensitive element can receive an infrared light signal and convert it into an electrical signal. Of course, a filter, an amplifier and a demodulator and the like components can also be arranged on the circuit board to enhance the signal received and processed by the detection module 22.

[0049] By arranging the filter, non-infrared light signals can be filtered out, improving the detection accuracy of the infrared light signal. The amplifier can increase the strength of the signal, so that it can be better detected and processed. The demodulator can match the infrared light signal with a specific frequency, further enhancing the stability and reliability of the signal. It can be understood that the infrared touch screen 20 often faces interference from the surrounding environment, such as indoor light, other electronic devices, etc. The filter can help shield these interference signals, thereby improving the anti-interference ability of the system. Through the gain control of the amplifier, the infrared light signal can be enhanced, so that it is easier to be detected and distinguished from the interference signal.

[0050] Referring to Figures 1 to 3 , the electronic pen 10 of the embodiments of the present application comprises a pen barrel 100 and a pen eraser module 200.

[0051] The pen barrel 100 has a mounting cavity 130. In some structural forms, the pen barrel 100 comprises a non-light-transmitting main body part 110 and a light-transmitting part 120 connected with the main body part 110, and the main body part 110 and the light-transmitting part 120 enclose the mounting cavity 130. The pen barrel 100 can be a transparent substrate made of plastic, and the plastic material includes but is not limited to polycarbonate (PC), polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polystyrene (PS) and the like, which is not limited in the present application. Then, the area where the light-transmitting part 120 needs to be formed on the pen barrel 100 is shielded or subjected to laser engraving process. By arranging a light shielding layer on the outer surface, or the inner surface, or both the inner and outer surfaces of the pen barrel 100, a non-light-transmitting main body part 110 and a light-transmitting part 120 can be formed. The light shielding layer can be in the form of paint, ink, light shielding film, etc. Of course, the main body part 110 and the light-transmitting part 120 can also be integrally produced by secondary injection molding. Alternatively, after the main body part 110 and the light-transmitting part 120 are separately manufactured, the light-transmitting part 120 can be fixed to the main body part 110 in an integral manner by bonding, welding or the like. The specific manufacturing method is not limited in the present application.

[0052] The eraser module 200 is installed at one end of the pen barrel 100. The eraser module 200 includes a control module 210, at least two infrared light sources 220 and a trigger assembly 230. The control module 210 is installed in the installation cavity 130. At least two infrared light sources 220 are installed in the pen barrel 100 and are electrically connected to the control module 210. The infrared light source 220 emits infrared light to the outside through the pen barrel 100. In some embodiments, the infrared light source 220 can be installed in the installation cavity 130, and the infrared light source 220 can emit infrared light to the outside through the above-mentioned light-transmitting portion 120. In other embodiments, a through hole (not shown in the figure) connecting the installation cavity 130 and the outside can be provided on the outer wall surface of the pen barrel 100, and the infrared light source 220 emits infrared light to the outside through the through hole. Among them, the infrared light source 220 can be embedded in the through hole. The trigger component 230 is electrically connected to the control module 210, and at least part of the trigger component 230 extends from one end of the pen barrel 100. The trigger component 230 is used to send a switch signal to the control module 210 so that the control module 210 controls the infrared light source 220 to emit infrared light.

[0053] Among them, see Figure 2 In some embodiments of the present application, at least two infrared light sources 220 have two different light emission directions, which can improve the accuracy of signal detection by the detection module 22. Specifically, if there is only one infrared light source 220, in some cases, the electronic pen 10 must be directly facing the photosensor on the detection module 22 for the detection module 22 to receive the infrared signal. However, when there are two infrared light sources 220, even if the electronic pen 10 is not completely aligned with one of the photosensors, the other infrared light source 220 can still provide an infrared signal to the other photosensor, thereby improving the accuracy of infrared signal detection by the detection module 22. Moreover, when there is only one infrared light source 220, the emitted infrared light may be interfered with by other electronic devices or environmental factors, such as surrounding lights or other electromagnetic waves. However, when there are two infrared light sources 220, and their light emission directions form an angle, the problem of one of the infrared light sources 220 being affected by interference and unable to be used can be effectively avoided, thereby improving the stability and reliability of the system.

[0054] Based on the electronic pen 10 of the embodiment of the present application, by arranging the infrared light source 220, the control module 210 and the triggering assembly 230 on the eraser module 200, the protection against the writing content being deleted due to the eraser module 200 being touched by mistake or the conductive object being close to the touch display screen 21 can be realized. Specifically, after the triggering assembly 230 is triggered, it sends a signal to the control module 210, and the control module 210 controls the infrared light source 220 to emit infrared light to the detection module 22 of the infrared touch screen 20. After the detection module 22 of the infrared touch screen 20 receives the signal emitted by the electronic pen 10, it compares with the preset ID code. If the matching is successful, the touch display screen 21 will execute the erasing operation according to the touch information of the user, and if the matching is not successful, the touch display screen 21 will not execute the erasing operation. In this way, the unnecessary erasing operation when the electronic pen 10 is touched by mistake or the conductive object is close to the touch display screen 21 can be effectively avoided, and the user experience and the safety of the writing content are improved.

[0055] In order to improve the accuracy of the detection module 22 receiving the infrared light emitted by the infrared light source 220, please refer to Figure 2 , the infrared light source 220 includes a first light source 221 and a second light source 222, and the light emitting directions of the first light source 221 and the second light source 222 are oppositely arranged. In this way, the infrared light emitted by the infrared light source 220 can ensure that the signal emitted by the electronic pen 10 can be received by the detection module 22 at any position on the screen, and when in use, no matter where the user performs the erasing operation on the screen, the system can accurately identify and respond.

[0056] It should be noted that the photosensitive elements of the detection module 22 are generally arranged on the circuit board in an interval, please refer to Figure 5 In some use scenarios, if the eraser module 200 is located at the upper part of the touch display screen 21, when the infrared light emitted by the first light source 221 passes through the two spaced photosensitive elements located on the upper side, the infrared light emitted by the second light source 222 can be captured by the photosensitive element on the other side, and if the eraser module 200 is located at the middle part of the touch display screen 21, the infrared light emitted by the infrared light source 220 can be captured by the photosensitive elements on both sides. By oppositely arranging the light emitting directions of the first light source 221 and the second light source 222, the most sensitive detection effect can be achieved by using the least infrared light beads.

[0057] Of course, in other embodiments, the infrared light source 220 can also include a third light source or a fourth light source, and the three infrared light sources 220 are arranged in a triangular arrangement, or the four infrared light sources 220 are arranged in a cross arrangement, which can also improve the accuracy of the infrared light being detected by the detection module. Herein, the number and specific installation form of the infrared light source 220 are not limited.

[0058] In order to facilitate the first light source 221 and the second light source 222 to emit infrared light outwardly, the light-transmitting portion 120 of the embodiment of the present application comprises a first portion 121 and a second portion 122, wherein the first portion 121 corresponds to the first light source 221, and the second portion 122 corresponds to the second light source 222. One infrared light source 220 corresponds to one light-transmitting portion 120, which can ensure that the infrared light emitted by each infrared light source 220 can be emitted in the expected direction, improve the receiving efficiency and accuracy of the infrared signal of the detection module 22 of the infrared touch screen 20, and further improve the performance and stability of the system, and can also prevent the light between the first light source 221 and the second light source 222 from interfering with each other. This helps to ensure that the infrared light emitted by each light source does not interfere with each other, thereby improving the detection accuracy and reliability of the infrared touch screen 20. It can be understood that the first portion 121 and the second portion 122 of the embodiment are in a split setting form, and in other embodiments, the first portion 121 and the second portion 122 can also be in an integrated form, as long as the first light source 221 and the second light source 222 can emit infrared light outwardly. For example, in the case where the light emitting directions of the first light source 221 and the second light source 222 are opposite, the first portion 121 and the second portion 122 can be formed into a whole annular structure.

[0059] Further, in some structural forms, the outer wall surface of the light-transmitting portion 120 is a plane. Specifically, the flat outer wall surface can reduce the reflection and scattering of light in the light-transmitting portion 120, and can also reduce the deflection and distortion of light in the light-transmitting portion 120, thereby improving the transmission efficiency of light and reducing the distortion of light. Moreover, compared with the outer wall surface with texture or complex shape, the plane outer wall surface is less likely to accumulate impurities such as dust, dirt and fingerprints, and thus can be more conveniently cleaned and maintained.

[0060] In some embodiments of the present application, the electronic pen 10 further comprises a mounting bracket 240 mounted in the mounting cavity 130, the mounting bracket 240 is provided with a receiving cavity 241 and has a light emitting hole 242 communicating with the receiving cavity 241, the control module 210 and the infrared light source 220 are arranged in the receiving cavity 241, and the infrared light source 220 is arranged opposite to the light emitting hole 242. The mounting bracket 240 can provide additional support and fixation, so that the control module 210 and the infrared light source 220 can be stably mounted in the mounting cavity 130, and can also protect the control module 210 and the infrared light source 220, thereby improving the service life. The light emitting hole 242 can avoid the mounting bracket 240 from blocking the light emitted by the infrared light source 220, and facilitate the infrared light source 220 to emit infrared light outwardly.

[0061] The control module 210 comprises a circuit board 211 and a control chip 212 mounted on the circuit board 211. The infrared light source 220 is fixed on the circuit board 211, and the trigger assembly 230 comprises a tactile switch 231 and a pen cap 232, the pen cap 232 is sleeved on the tactile switch 231, and the tactile switch 231 is fixed on the circuit board 211. The mounting bracket 240 is further provided with an avoiding opening 243 in communication with the receiving cavity 241, and the pen cap 232 penetrates through the avoiding opening 243 and partially extends out of the pen barrel 100. In use, the pen cap 232 is pressed to drive the tactile switch 231 to open and send a signal to the control chip 212 on the circuit board 211, so that the control chip 212 controls the infrared light source 220 to work.

[0062] For example, the pen cap 232 can be made of soft glue material, such as TPU (Thermoplastic polyurethane, thermoplastic polyurethane elastomer) soft glue. The pen cap 232 is used to contact the screen of the electronic device, which conforms to the wiping habits of most users and can reduce the force applied by the user when wiping, providing a better user experience. In addition, since the electronic pen 10 needs to be repeatedly rubbed on the screen during wiping, the pen cap 232 is provided in a flexible structure to avoid damaging the screen.

[0063] The mounting bracket 240 is provided with an avoiding groove 246 corresponding to the control chip 212. By setting the avoiding groove 246 to correspond to the shape and size of the specific control chip 212, the space can be utilized to the maximum, so that the structure between the control chip 212 and the mounting bracket 240 is more compact and effective.

[0064] Please refer to Figure 3 and Figure 4 The mounting bracket 240 comprises a first bracket 244 and a second bracket 245 which are detachably connected, the first bracket 244 and the second bracket 245 are clamped and fixed on opposite sides of the circuit board 211, and one of the first bracket 244 and the second bracket 245 is provided with a light emitting hole 242. In this way, the mounting operation of the first bracket 244 and the second bracket 245 is simple, and the control module 210 and the infrared light source 220 can be fixed and protected in cooperation. The first bracket 244 and the second bracket 245 can be connected by one or more of screwing, clamping and bonding, which is not limited in the application. In addition, in order to improve the stability and efficiency of the installation of the first bracket 244 and the second bracket 245, positioning columns and positioning grooves can be provided on the first bracket 244 and / or the second bracket 245, and correspondingly, the circuit board 211 can also be provided with positioning grooves matched with the positioning columns to improve the stability of the circuit board 211 fixed in the receiving cavity 241.

[0065] The second support 245 comprises a mounting base 2451 and an end cover 2452 connected together. The mounting base 2451 is detachably connected with the first support 244; the end cover 2452 is arranged at the same side of the mounting base 2451 and the first support 244 and covers one end of the pen barrel 100, and the end cover 2452 is provided with the avoiding opening 243. In this way, the mounting operation of the first support 244 and the second support 245 is facilitated. In addition, since the end cover 2452 can cover one end of the pen barrel 100, the impurities such as dust and dirt can be effectively prevented from entering the inside of the pen barrel 100, thereby improving the service life and reliability of the product.

[0066] In order to improve the convenience of the installation of the eraser module 200, the outer wall surface of the mounting support 240 and the pen barrel 100 are provided with the limiting groove 140 and the limiting rib 247 which are inserted and matched with each other between the cavity walls of the mounting cavity 130. It can be understood that the pen barrel 100 is a hollow sleeve structure, when being installed, the mounting support 240 is inserted into the mounting cavity 130 from the opening at one end of the pen barrel 100, and through the insertion and matching of the limiting groove 140 and the limiting rib 247, the connection between the mounting support 240 and the pen barrel 100 can be more closely, thereby avoiding the situation that the electronic pen 10 is caused to fall off due to slight collision or vibration and the like. At the same time, if the eraser module 200 needs to be disassembled, the limiting groove 140 and the limiting rib 247 can also be separated through simple operation, thereby facilitating the replacement or maintenance of the eraser module 200.

[0067] In order to improve the functionality of the electronic pen 10, the electronic pen 10 of the embodiment of the present application further comprises a pen tip module (not shown in the figure), which is used to provide writing function. The pen tip module comprises a piezoelectric switch and an infrared light source. It can be understood that the ID signal of the infrared light emitted by the pen tip module is not the same as the ID signal of the infrared light emitted by the eraser module 200. In this way, by making the pen tip module and the eraser module 200 emit different infrared light ID signals, it can be ensured that the infrared touch screen 20 can accurately identify and distinguish the writing operation and the erasing operation. In this way, the misoperation or confusion caused by the same operation signal can be avoided.

[0068] In the embodiment of the present application, by additionally arranging the detection module 22 around the touch display screen 21 and arranging the infrared light source 220 on the electronic pen 10, the touch display screen 21 can quickly respond to the electronic pen 10 to perform corresponding work. Compared with the touch screen form provided with an electromagnetic film, the infrared touch screen 20 does not need to be attached with an electromagnetic film or other sensors on the screen surface, but realizes quick response through the interaction between the detection module 22 and the infrared light source 220 on the electronic pen 10. In this way, the installation becomes simpler, and the manufacturing cost is also reduced.

[0069] Please refer to Figure 6 The embodiment of the present application also provides a control method, comprising the following steps:

[0070] S01, when receiving the first infrared signal sent by the eraser module 200, comparing the first infrared signal with the preset signal, determining that the infrared touch screen 20 has an erasing action according to the comparison result, and controlling the infrared touch screen 20 to respond to the erasing action;

[0071] S02, when receiving the second infrared signal sent by the pen tip module, comparing the second infrared signal with the preset signal, determining that the infrared touch screen 20 has a writing action according to the comparison result, and controlling the infrared touch screen 20 to respond to the writing action;

[0072] S03, when receiving the first infrared signal sent by the eraser module 200 and the second infrared signal sent by the pen tip module, comparing the first infrared signal with the preset signal, determining that the infrared touch screen 20 has an erasing action according to the comparison result, and controlling the infrared touch screen 20 to respond to the erasing action.

[0073] Based on the method of the embodiment of the application, by comparing different infrared signals, the operation intention of the user can be more accurately determined. By distinguishing the erasing action and the writing action, the misoperation or confusion caused by the same operation signal of the two operations can be avoided. Moreover, by comparing the preset signal, the operation action of the infrared touch screen 20 can be quickly judged, and the operation of the user can be quickly responded. In this way, the use experience of the user can be improved, and the operation of the user is more smooth and natural. Moreover, the infrared touch screen 20 of the embodiment of the application can only be used in cooperation with the electronic pen 10 with the corresponding infrared ID code, so that when other conductive objects contact the electronic device, the electronic device can be prevented from being disturbed, and the written content can be prevented from being erased.

[0074] It is further explained that the pen tip assembly of the embodiment of the application adopts a piezoelectric ceramic switch, and the eraser assembly adopts a light touch switch 231. Compared with the piezoelectric ceramic switch, the light touch switch 231 is more stable. Specifically, the piezoelectric ceramic switch triggers a switch signal by applying an external force to make the piezoelectric ceramic displace, so as to change its capacitance or resistance characteristics. When the pen tip uses the piezoelectric ceramic switch, even if the pen tip is not directly pressed, when the pen body is subjected to a major impact, enough force can be transmitted to cause the piezoelectric ceramic to displace, so as to trigger the switch signal. The light touch switch 231 needs a direct pressure or displacement acting on the switch to trigger the signal.

[0075] Therefore, when the pen body is subjected to a significant impact, due to the different ways of force transmission, the piezoelectric ceramic switch can be more easily affected and trigger the switch signal, while the light touch switch 231 needs more direct pressure to trigger the signal. In the embodiment of the present application, in order to avoid the occurrence of false touch, the infrared signal of the pen eraser module 200 is given priority, because the false touch possibility of the pen eraser module 200 is far less than that of the pen tip module.

[0076] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0077] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic pen used in cooperation with an infrared touch screen, characterized in that, The application relates to an electronic pen, which comprises a pen barrel, a control module, at least two infrared light sources and a trigger assembly. The pen barrel has a mounting cavity. The control module is mounted in the mounting cavity. The at least two infrared light sources are mounted on the pen barrel and electrically connected with the control module. The infrared light sources emit infrared light to the outside world, and the at least two infrared light sources have two different light emitting directions. The trigger assembly is electrically connected with the control module, and at least part of the trigger assembly extends from one end of the pen barrel. The trigger assembly is used for sending an on-off signal to the control module, so that the control module controls the infrared light sources to emit infrared light.

2. The electronic pen of claim 1, wherein The infrared light sources comprise a first light source and a second light source.

3. The electronic pen of claim 2, wherein The light emitting directions of the first light source and the second light source are oppositely arranged. The pen barrel comprises a non-light-transmitting main body part and a light-transmitting part connected with the main body part.

4. The electronic pen of claim 3, wherein The main body part and the light-transmitting part enclose the mounting cavity.

5. The electronic pen of claim 3, wherein The infrared light sources are mounted in the mounting cavity and emit infrared light to the outside world through the light-transmitting part.

6. An electronic pen according to any one of claims 1 to 5, wherein The light-transmitting part comprises a first part corresponding to the first light source and a second part corresponding to the second light source.

7. The electronic pen of claim 6, wherein The outer wall surface of the light-transmitting part is a plane. The application further comprises a mounting bracket mounted in the mounting cavity.

8. The electronic pen of claim 7, wherein The mounting bracket is provided with a receiving cavity and has a light emitting hole communicating with the receiving cavity. The control module and the infrared light sources are arranged in the receiving cavity, and the infrared light sources are arranged opposite to the light emitting hole.

9. The electronic pen of claim 7, wherein The control module comprises a circuit board, the infrared light sources are fixed on the circuit board, the trigger assembly comprises a touch switch and a pen cap, the pen cap is sleeved on the touch switch, and the touch switch is fixed on the circuit board.

10. The electronic pen of claim 6, wherein The mounting bracket is further provided with an avoiding opening communicating with the receiving cavity.

11. An electronic device, comprising: The pen cap is arranged in the avoiding opening and partially extends out of the pen barrel. The mounting bracket comprises a first bracket and a second bracket which are detachably connected. The first bracket and the second bracket are clamped and fixed on opposite sides of the circuit board, and one of the first bracket and the second bracket is provided with the light emitting hole. The second bracket comprises a mounting base and an end cover which are connected. The mounting base is detachably connected with the first bracket. The end cover is arranged on the same side of the mounting base and the first bracket and covers one end of the pen barrel. The control module further comprises a control chip mounted on the circuit board. The mounting bracket is provided with an avoiding groove corresponding to the control chip. The outer wall surface of the mounting bracket and the pen barrel are provided with a limiting groove and a limiting rib which are inserted and matched with each other between the cavity wall of the mounting cavity. The application further relates to an infrared touch screen and the electronic pen. The infrared touch screen comprises a touch display screen and a detection module arranged around the touch display screen. The detection module is signal coupled with the infrared light sources.

12. A control method of an electronic device, characterized by, The electronic device comprises an infrared touch screen and an electronic pen; the electronic pen comprises a pen barrel, a pen tip module arranged at one end of the pen barrel, and a pen eraser module arranged at the other end of the pen barrel; The method comprises: When receiving a first infrared signal sent by the pen eraser module, comparing the first infrared signal with a preset signal, determining, according to a comparison result, that the infrared touch screen has an erasing action, and controlling the infrared touch screen to respond to the erasing action; When receiving a second infrared signal sent by the pen tip module, comparing the second infrared signal with a preset signal, determining, according to a comparison result, that the infrared touch screen has a writing action, and controlling the infrared touch screen to respond to the writing action; When receiving the first infrared signal sent by the pen eraser module and the second infrared signal sent by the pen tip module, comparing the first infrared signal with a preset signal, determining, according to a comparison result, that the infrared touch screen has an erasing action, and controlling the infrared touch screen to respond to the erasing action.

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