WO2022077728A1

WO2022077728A1 - Active capacitive pen

Info

Publication number: WO2022077728A1
Application number: PCT/CN2020/133442
Authority: WO
Inventors: 陈运燊
Original assignee: 安徽鸿程光电有限公司
Priority date: 2020-10-12
Filing date: 2020-12-02
Publication date: 2022-04-21
Also published as: CN112306267B; CN112306267A

Abstract

The present application provides an active capacitive pen, comprising: a nib and a body, wherein the nib comprises a conductive soft shell and a filling fluid, a sealed cavity is provided in the conductive soft shell, one end of the sealed cavity is provided with a telescopic end, and the filling fluid is filled in the sealed cavity; the body is connected to the end of the nib provided with the telescopic end, a sensing mechanism and a processing mechanism are provided in the body, and the processing mechanism is electrically connected to the sensing mechanism; and a sensing end of the sensing mechanism is provided corresponding to the telescopic end. In the active capacitive pen of the present application, a sealed cavity is provided in a conductive soft shell of a nib, and a filling fluid is filled in the sealed cavity to cause deformation of the nib during writing of a user, and a sensing mechanism senses an acting force of a telescopic end to make the writing strength of the user simultaneously match the deformation degree of the nib, the contact area between the nib and a capacitive screen, and the thickness of a writing track on the capacitive screen, so that the writing features of calligraphy can be simulated, thereby effectively improving the writing experience of the user.

Description

Active capacitive pen

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202011085902.1 filed in China on October 12, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the technical field of capacitive pens, and more particularly, relates to an active capacitive pen.

Background technique

At present, there are more and more types of intelligent interactive display devices on the market, and with the rapid development of capacitive solutions, large-sized interactive display devices are equipped with writing pens. Most of the types of writing pens used are passive pens. Active pens are only used on high-end models and large screens. At present, because the interactive display large-screen capacitive technology is just emerging, the solution to support active pen capacitance is not mature.

Referring to FIG. 1 , in the prior art, an active capacitive pen is mainly composed of a conductive material tip 01 and a metal pen body 02 . The metal pen body 02 contains a pressure sensing module 03 , and the pressure sensing module 03 is used to complete pressure sensing detection. The conductive material pen tip 01 is used to contact the writing surface of the touch screen, and the active capacitive pen contacts the writing surface, and the conductive material pen tip 01 feeds back the pressure parallel to the metal pen body 02 to the pressure sensing module 03; the pressure sensing module 03 passes the conductive material The pen tip 01 feeds back the pressure, and the touch screen displays the thickness of the writing track according to the pressure fed back by the pressure sensing module 03 .

However, during the writing experience, the thickness of the handwriting on the touch screen needs to be controlled by the force applied to the conductive material pen tip 01 . When the thickness of the handwriting on the touch screen changes, the contact area between the conductive material nib 01 and the writing surface does not change, and the contact area between the conductive material nib 01 and the touch screen does not match the handwriting display area, resulting in the experience through the active capacitive pen The experience of writing is different from the actual writing experience with a pen, especially when writing brush characters through an active capacitive pen experience, the user experience is even worse.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide an active capacitive pen, so as to solve the technical problem that the contact area of the pen tip does not match the display area of the handwriting in the process of using the active capacitive pen in the prior art.

In order to achieve the above purpose, the technical solution adopted in this application is to provide an active capacitive pen, including: a pen tip and a pen body;

The pen tip comprises a conductive soft shell and a filling fluid, the conductive soft shell is provided with a sealing cavity, one end of the sealing cavity is provided with a telescopic end, and the filling fluid is filled in the sealing cavity;

The pen body is connected with the end of the pen tip which is provided with the telescopic end, the pen body is provided with an induction mechanism and a processing mechanism, and the processing mechanism is electrically connected with the induction mechanism; the induction end of the induction mechanism is connected to the induction mechanism. The telescopic ends are correspondingly arranged, so that the acting force of the telescopic ends is transmitted to the induction end of the induction mechanism.

Optionally, the radial cross-sectional area of the sealing cavity gradually increases from an end of the sealing cavity away from the telescopic end to an end of the sealing cavity close to the telescopic end.

Optionally, a sealing film is provided on the inner wall of the conductive soft shell, and the filling fluid is wrapped in the sealing film.

Optionally, the telescoping end and the sealing membrane communicate with each other so that the filling fluid can flow freely within the telescoping end and the sealing membrane.

Optionally, the pen tip further includes a baffle located between the telescopic end and the sensing end of the sensing mechanism, the baffle is fixedly connected to the telescopic end, and the sensing end of the sensing mechanism is connected to the sensing end of the sensing mechanism. baffle contact.

Optionally, one side of the baffle is further provided with a plurality of elastic members, one end of the elastic member is in contact with the baffle, and the other end is in contact with the pen body.

Optionally, the conductive soft shell has a wear-resistant head, and the wear-resistant head is located at an end of the conductive soft shell away from the pen body.

Optionally, the sensing mechanism is a pressure sensor.

Optionally, the induction mechanism includes a variable resistor and an electrical signal module, the baffle is slidably connected to the variable resistor, the variable resistor is connected in series with the electrical signal module, and the electrical signal module is connected in series. The group is electrically connected to the processing mechanism.

Optionally, the processing mechanism includes an information processing module, an information transmission module, and a power supply module, and the information transmission module is electrically connected to the induction mechanism, the information transmission module, and the power supply module, respectively.

The beneficial effect of the active capacitive pen provided by the present application is that compared with the prior art, a sealing cavity is provided in the conductive soft shell of the pen tip, and the sealing cavity is filled with a filling fluid, so that the pen tip can generate Deformation, the sensing mechanism detects the force of the telescopic end, so that the user's writing force can match the deformation degree of the pen tip, the contact area between the pen tip and the capacitive screen, and the thickness of the writing track on the capacitive screen, simulating the writing characteristics of brush characters, effectively Improve the user's writing experience.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic cross-sectional structure diagram of an active capacitive pen provided by the prior art;

FIG. 2 is a schematic front view of the structure of the active capacitive pen provided by the first embodiment of the present application;

3 is a schematic cross-sectional structural diagram of the active capacitive pen in FIG. 2 along the line A-A;

Fig. 4 is the enlarged view of B area in Fig. 3;

5 is a schematic cross-sectional structural diagram of the active capacitive pen along the line A-A provided by the second embodiment of the present application;

FIG. 6 is a schematic circuit diagram of the induction mechanism of FIG. 5 .

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the application and simplifying the description, rather than indicating or implying the indicated A device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

Example 1

The active capacitive pen 100 provided by the first embodiment of the present application will be described below with reference to FIGS. 2 to 4 . The active capacitive pen 100 includes a pen tip 10 and a pen body 20 .

Specifically, the pen tip 10 includes a conductive soft shell 11 and a filling fluid 12 . The conductive soft shell 11 is provided with a sealing cavity 14 , one end of the sealing cavity 14 is provided with a telescopic end 15 , and the filling fluid 12 is filled in the sealing cavity 14 .

It must be noted that, since the conductive material pen tip 01 in the prior art is a hard object with a fixed contact area with the touch screen, the conductive material pen tip 01 is in hard contact with the touch screen. However, the conductive soft shell 11 used in the first embodiment of the present application is deformable and has good softness, which can protect the capacitive screen from scratches while causing the capacitance of the capacitive screen to change, and prolong the life of the capacitive screen. The present application does not limit the material of the conductive soft shell 11 , for example, in some specific embodiments, the conductive soft shell 11 may be made of conductive rubber or conductive silicone. The filling fluid 12 can be one of gas or liquid, such as water, lubricating oil and other non-toxic and harmless fluids. Even if the conductive soft shell 11 is broken, it will not cause harm to the user.

Specifically, the pen body 20 is connected to the end of the pen tip 10 provided with the telescopic end 15, the pen body 20 is provided with a sensing mechanism 211 and a processing mechanism 212, and the processing mechanism 212 is electrically connected with the sensing mechanism 211; the sensing end of the sensing mechanism 211 is connected to The telescopic ends 15 are correspondingly arranged so that the force of the telescopic ends 15 is transmitted to the sensing end of the sensing mechanism 211 .

It must be noted that when the pen tip 10 is deformed under pressure, the filling fluid 12 in the sealed cavity 14 is compressed, so that the telescopic end 15 is elongated, and the pressure detected by the sensing mechanism 211 will also increase, and then it is determined that the pen tip is at this time. The degree of deformation of the 10 increases, that is, the contact area between the pen tip 10 and the capacitive screen increases accordingly, and after the processing by the processing mechanism 212, the writing track displayed on the capacitive screen also becomes thicker. On the contrary, when the pressure of the pen tip 10 is reduced, the telescopic end 15 is contracted, and the pressure detected by the sensing mechanism 211 is also reduced, and then it is judged that the degree of deformation of the pen tip 10 is reduced at this time, that is, the contact area between the pen tip 10 and the capacitive screen follows. If the value is reduced, the writing track displayed on the capacitive screen also becomes thinner after being processed by the processing mechanism 212 . The active capacitive pen 100 can simulate the characteristics of writing brush characters, and is especially suitable for users who write brush characters.

Compared with the prior art, in the active capacitive pen 100 provided by the present application, a sealed cavity 14 is provided in the conductive soft shell 11 of the pen tip 10, and the sealed cavity 14 is filled with the filling fluid 12, so that the user can write when writing. The pen tip 10 can be deformed, and the sensing mechanism 211 detects the force of the telescopic end 15, so that the user's writing force can match the deformation degree of the pen tip 10, the contact area between the pen tip 10 and the capacitive screen, and the thickness of the writing track on the capacitive screen at the same time. , simulating the writing characteristics of brush characters, effectively improving the user's writing experience.

Optionally, as shown in FIG. 3 , the radial cross-sectional area of the sealing cavity 14 gradually increases from the end of the sealing cavity 14 away from the telescopic end 15 to the end of the sealing cavity 14 close to the telescopic end 15 . By simulating the shape of a conventional brush, the user can obtain a better experience when using the active capacitive pen 100 .

Optionally, as shown in FIG. 3 and FIG. 4 , the inner wall of the conductive soft shell 11 is provided with a sealing film 16 , and the filling fluid 12 is wrapped in the sealing film 16 . The filling fluid 12 can be further sealed by the sealing film 16, and even if the conductive soft shell 11 is worn and broken, the filling fluid 12 will not flow out.

Optionally, as shown in FIGS. 3 and 4 , the telescopic end 15 and the sealing membrane 16 communicate with each other, so that the filling fluid 12 can flow freely in the telescopic end 15 and the sealing membrane 16 . When the conductive soft shell 11 is deformed, the filling fluid 12 in the sealing film 16 will flow into the telescopic end 15, so that the telescopic end 15 is elongated; on the contrary, when the conductive soft shell 11 returns to normal, the filling fluid 12 in the telescopic end 15 will flow to the telescopic end 15. In the sealing film 16 , the telescopic end 15 is shortened, and then the application of pressure to the induction mechanism 211 is stopped. It is worth noting that, the side wall of the telescopic end 15 can be set in a corrugated or corrugated shape, so that the telescopic end 15 can be freely elastically expanded and contracted.

Optionally, as shown in FIGS. 3 and 4 , the pen tip 10 further includes a baffle 13 located between the telescopic end 15 and the sensing end of the sensing mechanism 211 , the baffle 13 is fixedly connected to the telescopic end 15 , and the sensing The ends are in contact with the baffle 13 . By arranging the baffle 13, when the telescopic end 15 is extended, the baffle 13 can be pushed, and the baffle 13 is in contact with the sensing end of the sensing mechanism 211, so that the sensing end of the sensing mechanism 211 is subjected to more uniform force, so as to reduce the sensing mechanism 211 Detected pressure error.

Optionally, as shown in FIGS. 3 and 4 , one side of the baffle 13 is further provided with several elastic members 17 , one end of the elastic members 17 is in contact with the baffle 13 , and the other end is in contact with the pen body 20 . The elastic member 17 preferably adopts a coil spring. When the conductive soft shell 11 is deformed, the telescopic end 15 extends and pushes the baffle 13, so that the elastic member 17 is compressed. At this time, the elastic member 17 can strengthen the balance of the baffle 13; When the pressure on the pen tip 10 is reduced, under the action of the internal force of the elastic member 17, the retractable end 15 and the baffle 13 can be quickly restored, thereby accelerating the restoration of the pen tip 10 to the original state.

Optionally, as shown in FIG. 3 , the conductive soft shell 11 has a wear-resistant head 18 , and the wear-resistant head 18 is located at one end of the conductive soft shell 11 away from the pen body 20 . The wear-resistant head 18 can prevent the conductive soft shell 11 from being worn out during the long-term writing process. The wear-resistant head 18 can be made of the same material as the conductive soft shell 11 by integral molding. Of course, the wear-resistant head 18 can also be fixed on the The wear-resistant material layer on the conductive soft shell 11 may be high manganese steel, alloy wear-resistant steel, etc., in order to improve the wear-resistant effect of the conductive soft shell 11 .

Optionally, in some embodiments, the sensing mechanism 211 is a pressure sensor. A pressure sensor is a device or device that can sense pressure signals and convert the pressure signals into usable output electrical signals according to certain rules. The pressure on the baffle 13 can be accurately sensed by the pressure sensor, and the response is sensitive.

Embodiment 2

The active capacitive pen 100 provided by the second embodiment of the present application will be described below with reference to FIG. 5 and FIG. 6 . The active capacitive pen 100 in the second embodiment of the present application is the same as the active capacitive pen 100 in the first embodiment, and also includes a pen tip 10 and a pen body 20 .

The difference is that the sensing mechanism 211 includes a variable resistor 2111 and an electrical signal module 2112, the baffle 13 is slidably connected to the variable resistor 2111, the variable resistor 2111 is connected in series with the electrical signal module 2112, and the electrical signal module 2112 is connected to the processing The mechanism 212 is electrically connected. It can be understood that the electrical signal module 2112 can be a high-precision electronic galvanometer. When the telescopic end 15 is extended, it will push the baffle 13 to move. At this time, the variable resistor 2111 will change, causing the variable resistor 2111 to pass through. The current changes, the electrical signal module 2112 can test the magnitude of the current passing through the variable resistor 2111, and send the electrical signal to the processing mechanism 212. The processing mechanism 212 converts the electrical signal into a digital signal through a preset protocol to realize the signal transmission. convert. Compared with using a pressure sensor as the sensing mechanism 211, the sensing mechanism 211 composed of the variable resistor 2111 and the electrical signal module 2112 has a longer service life, and the output current is less affected by temperature and humidity, and has a wide range of use.

Embodiment 3

The active capacitive pen 100 provided by the third embodiment of the present application will be described below with reference to FIG. 3 and FIG. 5 . The active capacitive pen 100 of the third embodiment of the present application is the same as the active capacitive pen 100 of the first embodiment or the active capacitive pen 100 of the second embodiment.

The difference is that the processing mechanism 212 includes an information processing module 2121, an information transmission module 2122 and a power supply module 2123, and the information transmission module 2122 is electrically connected to the sensing mechanism 211, the information transmission module 2122 and the power supply module 2123 respectively. . It can be understood that, the power module 2123 can use a detachable battery or a rechargeable battery, and is intended to provide power for the active capacitive pen 100 . The information processing module 2121 can be a common single-chip microcomputer, such as TMS370, MSP430, PHLIPIS 51PLC, etc., which aims to convert electrical signals into digital signals through a preset protocol, package the digital signals with a private protocol, and transmit information through The module 2122 can be sent to the host side by wireless means such as antenna or bluetooth. The host side can be a PC terminal or an Android terminal to realize the transmission of pressure-sensitive data. The host side controls the thickness of the writing track displayed on the capacitive screen, and then simulates a writing brush. The writing characteristics of characters can improve the user's writing experience.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

An active capacitive pen, comprising: a pen tip and a pen body, wherein,

The pen tip comprises a conductive soft shell and a filling fluid, the conductive soft shell is provided with a sealing cavity, one end of the sealing cavity is provided with a telescopic end, and the filling fluid is filled in the sealing cavity;

The pen body is connected with the end of the pen tip which is provided with the telescopic end, the pen body is provided with an induction mechanism and a processing mechanism, and the processing mechanism is electrically connected with the induction mechanism; the induction end of the induction mechanism is connected to the induction mechanism. The telescopic ends are correspondingly arranged, so that the acting force of the telescopic ends is transmitted to the induction end of the induction mechanism.
The active capacitive pen according to claim 1, wherein the radial cross-sectional area of the sealed cavity gradually increases from the end of the sealed cavity away from the telescopic end to the end of the sealed cavity close to the telescopic end big.
The active capacitive pen according to claim 1, wherein a sealing film is provided on the inner wall of the conductive soft shell, and the filling fluid is wrapped in the sealing film.
4. The active capacitive pen of claim 3, wherein the telescopic end and the sealing film communicate with each other, so that the filling fluid can flow freely in the telescopic end and the sealing film.
The active capacitive pen of claim 1, wherein the pen tip further comprises a baffle plate located between the telescopic end and the sensing end of the sensing mechanism, the baffle plate being fixedly connected to the telescopic end, The sensing end of the sensing mechanism is in contact with the baffle.
The active capacitive pen according to claim 5, wherein a plurality of elastic members are further provided on one side of the baffle, one end of the elastic member is in contact with the baffle, and the other end is in contact with the pen body .
The active capacitive pen according to claim 1, wherein the conductive soft shell has a wear-resistant head, and the wear-resistant head is located at an end of the conductive soft shell away from the pen body.
The active capacitive pen of claim 1, wherein the sensing mechanism is a pressure sensor.
The active capacitive pen according to claim 5, wherein the sensing mechanism comprises a variable resistor and an electrical signal module, the baffle is slidably connected to the variable resistor, and the variable resistor is connected to the electrical signal module. The signal modules are connected in series, and the electrical signal modules are electrically connected with the processing mechanism.
The active capacitive pen according to any one of claims 1 to 9, wherein the processing mechanism comprises an information processing module, an information transmission module and a power supply module, the information transmission module and the sensing mechanism are respectively , the information transmission module and the power module are electrically connected.