WO2022094802A1 - 主动式电容笔及电子终端 - Google Patents

主动式电容笔及电子终端 Download PDF

Info

Publication number
WO2022094802A1
WO2022094802A1 PCT/CN2020/126526 CN2020126526W WO2022094802A1 WO 2022094802 A1 WO2022094802 A1 WO 2022094802A1 CN 2020126526 W CN2020126526 W CN 2020126526W WO 2022094802 A1 WO2022094802 A1 WO 2022094802A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
pen
axial direction
capacitive
active capacitive
Prior art date
Application number
PCT/CN2020/126526
Other languages
English (en)
French (fr)
Inventor
朱定炜
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2020/126526 priority Critical patent/WO2022094802A1/zh
Priority to US17/488,285 priority patent/US11609666B2/en
Publication of WO2022094802A1 publication Critical patent/WO2022094802A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser

Definitions

  • the present application relates to the technical field of capacitive touch, and in particular, to an active capacitive pen and an electronic terminal.
  • capacitive touch technology has become the mainstream mobile device touch technology.
  • the matching use of active capacitive pens and capacitive touch screens has become more and more common in electronic products such as tablet computers, mobile phones, and display screens. , which greatly improves the efficiency and convenience of people's use of functions such as selection, drawing, drawing, and writing in daily meetings, lectures, and discussions.
  • the protocols adopted by the current mainstream active pens mainly include the MPP (Microsoft Pen Protocol) protocol, the USI (Universal Stylus Initiative) protocol, and the Apple protocol, etc., and currently there are only two MPP and USI protocols.
  • MPP Microsoft Pen Protocol
  • USI Universal Stylus Initiative
  • Apple protocol etc.
  • This protocol can obtain shared resources. Since various protocols have corresponding coding methods, transmission methods, pen tip structure and flat-end design requirements, most of the active pens above only support one protocol, and cannot realize the touch operation of both MPP and USI protocols at the same time.
  • the purpose of some embodiments of the present application is to provide an active capacitive pen and an electronic terminal, which can take into account the touch operations of both MPP and USI protocols.
  • An embodiment of the present application provides an active capacitive pen, which is suitable for a capacitive touch screen to communicate interactively with the capacitive touch screen.
  • the active capacitive pen includes: a pen holder; and a first electrode disposed on the One end of the pen holder, the first electrode is used to send a signal to the capacitive touch screen, and the end of the first electrode away from the pen holder serves as the pen tip of the active capacitive pen; the second electrode is arranged on the on the pen holder and spaced apart from the first electrode in the axial direction of the pen holder, the second electrode is used for receiving signals from the capacitive touch screen and sending signals to the capacitive touch screen transmitting a signal; a third electrode, arranged on the pen holder and located between the first electrode and the second electrode in the axial direction of the pen holder; a switching circuit, connected with the second electrode and the first electrode Three electrodes are connected, and the switching circuit is used for electrically connecting the third electrode to the second electrode in a first working state,
  • An embodiment of the present application further provides an electronic terminal, including: a capacitive touch screen; an active capacitive pen, which is matched and used with the capacitive touch screen, and the active capacitive pen is the above-mentioned active capacitive pen Capacitive pen.
  • three electrodes are set in the active capacitive pen at the same time, and the third electrode is located between the first electrode and the second electrode in the axial direction of the pen shaft , so that:
  • the switching circuit electrically connects the third electrode to the second electrode in the first working state
  • the first electrode at the front end of the pen holder serves as the TIP electrode
  • the second electrode and the third electrode together serve as the Ring electrode , so as to realize the stylus adapted to the USI protocol.
  • a third electrode is separated from the second electrode and the first electrode, so that the second electrode can be far away from the capacitive touch screen when the stylus is in use.
  • the third electrode connected to the second electrode reduces the height of the lower edge of the Ring electrode in a disguised form, which reduces the height of the Ring electrode when the stylus is in use, and also increases the area of the Ring electrode, reducing the height and increasing the area. It can avoid the small amount of uplink signal received by the Ring electrode, and solve the problem of insufficient uplink signal amount caused by the large palm of capacitive pen users;
  • the switching circuit disconnects the third electrode and the second electrode in the second working state
  • the first electrode at the front end of the pen holder acts as a TIP electrode
  • the second electrode acts as a Ring electrode alone, so as to achieve a suitable
  • a third electrode is spaced between the second electrode and the first electrode, which is used as a ring electrode alone, so that the second electrode can be far away from the capacitive touch screen when the stylus is in use. Avoid the problem that the height of the second electrode, which is used alone as the Ring electrode, is low, which reduces the accuracy of angle measurement;
  • the active capacitive pen can take into account different structural design requirements under the MPP and USI protocols, and take into account the touch operations of the MPP and USI protocols.
  • the switching circuit is further configured to ground the third electrode in the second state. In this way, the signal reception interference caused by the third electrode to the second electrode can be reduced when the third electrode does not need to cooperate with the second electrode to receive signals.
  • the second electrode is a ring electrode disposed on the pen holder and encircling the axial direction in a ring shape, and the lower edge of the second electrode and the end of the first electrode are in the
  • the distance in the axial direction of the pen barrel is not less than 5.8 mm. In this way, when the stylus is in use, the distance between the lower edge of the second electrode and the capacitive touch screen is kept at 5.8 mm or more, which can ensure the second electrode without affecting the miniaturized design of the capacitive stylus.
  • the height will not be too low to ensure sufficient angle measurement accuracy.
  • the third electrode is a ring electrode disposed on the pen barrel and encircling the axial direction in a ring shape, and the lower edge of the third electrode and the end of the first electrode are in the The distance in the axial direction of the pen barrel is not more than 3.7 mm. In this way, when the stylus is in use, the distance from the capacitive touch screen with the Ring electrode (the second electrode and the third electrode together as the Ring electrode) is kept within 3.7 mm, which can satisfy the miniaturization design of the capacitive stylus at the same time. , the amount of uplink signals received by the boosting Ring electrode is large enough.
  • the length of the first electrode in the axial direction of the pen barrel is 3.5 mm to 3.7 mm. This arrangement can further satisfy the miniaturization design of the capacitive pen and ensure that the amount of uplink signals received by the Ring electrode of the capacitive pen (in the mode of working with the USI protocol) is large enough.
  • the length of the third electrode in the axial direction of the pen barrel is 2.1 mm ⁇ 2.4 mm. This setting can not affect the miniaturized design of the capacitive pen and ensure that the Ring electrode of the capacitive pen (in the mode of working with the MPP protocol) can ensure sufficient angle measurement accuracy.
  • the length of the second electrode in the axial direction of the pen barrel is 3.0 mm to 6.4 mm. This arrangement can not affect the miniaturized design of the capacitive pen, and by increasing the size of the second electrode, the amount of uplink signals received by the Ring electrode can be further improved (in the mode of working with the USI protocol).
  • the length of the second electrode in the axial direction of the pen barrel is 3.0 mm ⁇ 3.5 mm. This setting can ensure (in the mode of working with the USI protocol) the amount of uplink signal received by the Ring electrode, and further meet the miniaturization design requirements of the capacitive pen.
  • the switching circuit includes an optocoupler switch, and the output ends of the optocoupler switch are electrically connected to the second electrode and the third electrode, respectively, and the switching circuit passes through the conduction of the optocoupler switch. On and off to switch between the first working state and the second working state.
  • the optocoupler switch is used to realize the conduction and disconnection of the second electrode and the third electrode, so that the input end of the optocoupler switch and the signal circuit of the second electrode are not directly electrically connected, which plays the role of isolating interference.
  • FIG. 1 is a schematic structural diagram of an active capacitive pen according to a first embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a switching circuit of an active capacitive pen according to the first embodiment of the present application
  • FIG. 3 is a schematic structural diagram of an active capacitive pen according to a second embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a switching circuit of an active capacitive pen according to a second embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an electronic terminal according to a third embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another electronic terminal according to the fourth embodiment of the present application.
  • the first embodiment of the present application relates to an active capacitive pen, which is suitable for a capacitive touch screen to communicate interactively with the capacitive touch screen.
  • the active capacitive pen includes: a pen holder; At one end of the pen holder, the first electrode is used to send a signal to the capacitive touch screen, and the end of the first electrode away from the pen holder serves as the pen tip of the active capacitive pen; the second electrode is arranged at the The pen holder is spaced from the first electrode in the axial direction of the pen holder, and the second electrode is used for receiving signals from the capacitive touch screen and sending signals to the capacitive touch screen.
  • the screen transmits a signal; a third electrode is arranged on the pen holder and is located between the first electrode and the second electrode in the axial direction of the pen holder; a switching circuit is connected to the second electrode and the The third electrode is connected, and the switching circuit is used for electrically connecting the third electrode to the second electrode in a first working state, and disconnecting the third electrode from the second electrode in a second working state Electrical connection of the two electrodes.
  • the core of this embodiment is that a third electrode is additionally arranged between the first electrode and the second electrode as the pen tip electrode, so that the capacitive pen can adapt to the USI protocol and the MPP protocol respectively under the switching of the switching circuit:
  • the second electrode and the third electrode are electrically connected to jointly serve as a signal transceiving electrode. Therefore, on the one hand, the lower edge height of the entire signal transceiving electrode is reduced by using the third electrode closer to the first electrode. On the other hand, the area of the signal transceiver electrode is increased. The reduction of height and the increase of the area can avoid the small amount of uplink signal received by the signal transceiver electrode, and solve the problem of insufficient uplink signal amount caused by the large palm of capacitive pen users;
  • the second electrode and the third electrode are disconnected, and the second electrode is used as a signal sending electrode alone. Since the second electrode and the first electrode are separated by a third electrode, the second electrode When the touch pen is in use, it can be far away from the capacitive touch screen, so as to avoid the problem that the height of the second electrode is low and the accuracy of angle measurement is reduced.
  • an active capacitive pen 100 suitable for a capacitive touch screen (not shown) provided by the first embodiment of the present application includes a pen holder 10 , a first electrode 11 , a second electrode 12 , and a third electrode 13 and switching circuit 14.
  • the pen holder 10 is used to carry other components of the active capacitive pen 100 .
  • the pen holder 10 is made of insulating material and has a hollow structure with a receiving cavity, so that the receiving cavity can be used to accommodate the first electrode 11 and the second electrode 12 and the controller electrically connected to the third electrode 13, and then control the active capacitive pen 100 to perform signal transmission and reception with the capacitive touch screen, so as to realize touch operation.
  • the pen holder 10 may also be a solid structure, and a controller may be additionally provided on the end or outer wall of the pen holder 10 .
  • the first electrode 11 is disposed at the front end of the pen holder 10 to send a signal to the capacitive touch screen.
  • the first electrode 11 is a columnar electrode, such as a cylinder, so that one end of the columnar first electrode 11 is fixedly connected to the pen holder 10 and the other end is away from the pen holder 10 as the pen tip of the active capacitive pen 100 .
  • the shape of the first electrode 11 is not limited to a cylindrical shape. In other possible embodiments, the shape of the first electrode 11 may also be a cone or a frustum whose apex is set as a smooth curved surface.
  • the bottom of the cone or frustum-shaped first electrode 11 is larger in size and can be firmly connected to the pen holder 10, while the top of the cone or frustum-shaped first electrode 11 is small in size and smooth, which is convenient for use as a pen tip and not easy to scratch Flower capacitive touch screen.
  • the diameter of the end of the first electrode 11 away from the pen barrel 10 is preferably not less than 1.72 mm. In one example, the diameter of the end of the first electrode 11 away from the pen barrel 10 is 1.72 mm.
  • the second electrode 12 is arranged on the pen holder 10 and is spaced apart from the first electrode 11 in the axial direction of the pen holder 10 (the longitudinal direction of the pen holder 10, that is, the vertical direction of the drawing shown in FIG. 1 ). 12 is used to receive the signal transmitted from the capacitive touch screen.
  • the first electrode 11 and the second electrode 12 are spaced apart from each other and away from each other, so that interference between them can be avoided.
  • the third electrode 13 is provided on the pen barrel 10 and is located between the first electrode 11 and the second electrode 12 in the axial direction of the pen barrel 10 .
  • the switching circuit 14 is connected with the second electrode 12 and the third electrode 13, and the switching circuit 14 electrically connects the third electrode 13 to the second electrode 12 in the first working state, and disconnects the third electrode 13 in the second working state Electrical connection to the second electrode 12 .
  • the switching circuit 14 can be arranged in the hollow pen holder 10 , so as to realize the on and off of the electrical connection between the second electrode 12 and the third electrode 13 .
  • the switching circuit 14 may be a single-pole switch, an optocoupler switch, etc. connected between the second electrode 12 and the third electrode 13 .
  • the switching circuit 14 includes an optocoupler switch having an input end, an output end, a light emitting diode D1, a phototransistor 140, a MOS transistor 141 and a MOS transistor 142 as shown in FIG. 2, and the input ends of the optocoupler switch are respectively connected to To the anode and cathode of the light-emitting diode D1, it is used to control whether the light-emitting diode D1 emits light.
  • the MOS tubes 141 and 142 are respectively connected to the output terminals, and the output terminals of the optocoupler switch are electrically connected to the second electrode 12 and the third electrode 13 respectively.
  • the phototransistor 140 When the light-emitting diode D1 is not turned on and does not emit light, the phototransistor 140 is turned off, and the Vcc power supply directly connects the N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide-semiconductor field-effect transistor, down The gate voltages of the MOS transistors 141 and 142 are pulled up.
  • MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide-semiconductor field-effect transistor
  • the MOS transistors 141 and 142 are turned on, the second electrode 12 and the third electrode 13 are electrically connected to each other, and the switching circuit 14 is in the first working state;
  • the phototransistor 140 is turned on, thereby pulling the gates of the N-channel MOS transistors 141 and 142 to a low voltage.
  • the MOS transistors 141 and 142 are turned off.
  • the electrical connection is disconnected, and the switching circuit 14 is in the second working state. In this way, the switching circuit 14 switches between the first working state and the second working state by turning on and off the optocoupler switch.
  • the input end of the optocoupler switch and the signal circuit of the second electrode 12 are not directly electrically connected, which plays the role of isolating interference.
  • the third electrode 13 is located at the first electrode 11 and the second electrode 12 in the axial direction of the pen barrel 10 . between, since:
  • the switching circuit 14 electrically connects the third electrode 13 to the second electrode 12 in the first working state
  • the first electrode 11 located at the front end of the pen holder 10 serves as a TIP electrode
  • the second electrode 12 and the third electrode 13 share the same
  • a stylus adapted to the USI protocol is realized, although a third electrode 13 is spaced between the second electrode 12 and the first electrode 11, so that the second electrode 12 can be distanced from the capacitance when the stylus is in use.
  • the stylus type touch screen is far away, but the third electrode 13 connected to the second electrode 12 reduces the height of the lower edge of the signal transceiving electrode in a disguised form, so that the height of the signal transceiving electrode in the use state of the stylus decreases, and also increases the height of the signal transceiving electrode.
  • the area, height reduction and area increase of the signal transceiver electrode can avoid the small amount of uplink signal received by the signal transceiver electrode, and solve the problem of insufficient uplink signal amount caused by the large palm of the capacitive pen user;
  • the switching circuit 14 disconnects the connection between the third electrode 13 and the second electrode 12 in the second working state
  • the first electrode 11 at the front end of the pen holder 10 serves as a TIP electrode for sending signals
  • the second electrode 12 serves as a separate
  • a signal sending electrode is used to realize a stylus adapted to the MPP protocol. Since a third electrode 13 is spaced between the second electrode 12 and the first electrode 11, the second electrode 12 can be distanced from the capacitive type when the stylus is in use. The touch screen is far away to avoid the problem of lowering the accuracy of angle measurement due to the lower height of the second electrode 12;
  • the active capacitive pen 100 can take into account the different structural design requirements of the MPP and USI protocols, and take into account the touch operations of the MPP and USI protocols.
  • the second electrode 12 may be a ring electrode (hereinafter referred to as a Ring electrode) disposed on the pen barrel 10 and encircling the axial direction of the pen barrel 10 in a ring shape.
  • a Ring electrode a ring electrode
  • both the TIP electrode and the Ring electrode are used as transmitting electrodes to transmit signals, and the data received by the second electrode 12, which is higher than the TIP electrode, is used to measure the inclination angle of the capacitive pen.
  • the second electrode 12 needs to be far away from the capacitive touch screen (that is, the height of the second electrode 12 needs to be high enough) to improve the measurement accuracy of the tilt angle.
  • the second The distance between the lower edge of the electrode 12 and the end of the first electrode 11 in the axial direction of the pen holder is not less than 5.8 mm.
  • the distance between the lower edge of the second electrode 12, which is solely used as the Ring electrode, and the capacitive touch screen is kept at 5.8 mm or more, which can be achieved without affecting the miniaturization of the capacitive stylus.
  • the capacitive pen is not too long
  • it is ensured that the height of the second electrode 12 is not too low, so as to ensure that when adapting the MPP protocol, the data received by the second electrode 12 can be obtained with higher accuracy.
  • Angle measurement data is ensured that the height of the second electrode 12 is not too low, so as to ensure that when adapting the MPP protocol, the data received by the second electrode 12 can be obtained with higher accuracy.
  • the length L2 of the second electrode 12 in the axial direction of the pen barrel 10 is 3.0 mm to 6.4 mm. This setting does not affect the miniaturized design of the capacitive pen, and the size of the second electrode 12 is increased to further improve the Increase the amount of uplink signals received by the Ring electrode (in the mode of working with the USI protocol).
  • the length L2 of the second electrode 12 in the axial direction of the pen barrel 10 is 3.0 mm to 3.5 mm. This setting can ensure the amount of uplink signals received by the Ring electrode (in the mode of working with the USI protocol), and To further meet the miniaturization design requirements of capacitive pens.
  • the length L2 of the second electrode 12 in the axial direction of the pen barrel 10 is 3.0 mm.
  • the third electrode 13 may also be a ring-shaped electrode disposed on the pen barrel 10 and encircling the axial direction of the pen barrel 10 in a ring shape, so as to form a Ring after being connected with the ring-shaped second electrode 12 electrode.
  • the capacitive stylus is in the use state of adapting to the USI protocol, in order to ensure that the second electrode 12 and the third electrode 13, which are commonly used as Ring electrodes, need to be closer to the capacitive touch screen, so as to increase the amount of uplink signals received by the Ring electrodes. Therefore, in one example, the distance D between the lower edge of the third electrode 13 and the end of the first electrode 11 in the axial direction of the pen barrel 10 is not greater than 3.7 mm.
  • the distance D between the lower edge of the third electrode 13 and the end of the first electrode 11 in the axial direction of the pen barrel 10 is not greater than 3.7 mm, further, the length L1 of the first electrode 11 in the axial direction of the pen barrel 10 3.5 mm to 3.7 mm.
  • This arrangement can further satisfy the miniaturization design of the capacitive pen and ensure that the amount of uplink signals received by the Ring electrode of the capacitive pen (in the mode of working with the USI protocol) is large enough.
  • the third electrode 13 and the first electrode 11 are spaced apart from each other in the axial direction of the pen barrel 10;
  • the third electrode 13 and the first electrode 11 are disposed adjacent to each other in the axial direction of the pen barrel 10 .
  • the length L1 of the first electrode 11 in the axial direction of the pen barrel 10 is 3.5 mm.
  • the length L3 of the third electrode 13 in the axial direction of the pen barrel 10 is 2.1 mm ⁇ 2.4 mm. This setting can not affect the miniaturized design of the capacitive pen and ensure that the capacitive pen (under the MPP protocol working mode) ) of the Ring electrode to ensure sufficient angle measurement accuracy. Specifically, in this embodiment, the length L3 of the third electrode 13 in the axial direction of the pen barrel 10 is 2.4 mm.
  • the second embodiment of the present application provides another active capacitive pen 200 , and the structures of the active capacitive pen 200 provided by the second embodiment of the present application and the active capacitive pen 100 provided by the first embodiment Basically, the active capacitive pen 200 also includes a pen holder 10 , a first electrode 11 , a second electrode 12 and a third electrode 13 switching circuit 14 . Different from the active capacitive pen 100 provided by the first embodiment, the switching circuit 24 of the active capacitive pen 200 provided by the second embodiment disconnects the electrical connection between the third electrode 13 and the second electrode 12 in the second state At the same time, the third electrode 13 is also grounded.
  • the switching circuit 24 includes an optocoupler switch as shown in FIG. 4 , and the input ends of the optocoupler switch are respectively connected to the positive and negative electrodes of the light-emitting diode D1 for controlling whether the light-emitting diode D1 emits light.
  • the output terminals 141 and 142 of the switch are electrically connected to the second electrode 12 and the third electrode 13 respectively, and the drain of the MOS transistor 142 is connected to the third electrode 13 and is grounded via the resistor R2 at the same time.
  • the phototransistor 140 When the light-emitting diode D1 is not turned on and does not emit light, the phototransistor 140 is turned off, and the Vcc power source directly pulls up the gate voltage of the MOS transistors 141 and 142 through the resistor R1. At this moment, the MOS transistors 141 and 142 are turned on, and the second electrode 12 and the third electrode 13 are electrically connected to each other, and the switching circuit 14 is in the first working state; when the light-emitting diode D1 is turned on to emit light, the phototransistor 140 is turned on, thereby connecting the gates of the N-channel MOS transistors 141 and 142.
  • the MOS transistors 141 and 142 are turned off, the electrical connection between the second electrode 12 and the third electrode 13 is disconnected, the switching circuit 14 is in the second working state, and the third electrode 13 is grounded via the resistor R2. In this way, the signal reception interference caused by the third electrode 13 to the second electrode 12 can be reduced when there is no need to use the third electrode 13 and the second electrode 12 as a signal transceiving electrode to receive/transmit signals.
  • the third embodiment of the present application further provides an electronic terminal, the electronic terminal includes a capacitive touch screen 300 and the aforementioned active capacitive pen 100 (shown in FIG. 5 ), Or, the electronic terminal includes a capacitive touch screen and the aforementioned active capacitive pen 200 (shown in FIG. 6 ), and the active capacitive pen 100 or 200 is matched 300 with the capacitive touch screen, and the switching circuit
  • the different working states of 14 or 24 can enable the active capacitive pen 100 or 200 to take into account different structural design requirements under the two protocols of MPP and USI, and take into account the touch operation of the two protocols of MPP and USI.

Abstract

本申请部分实施例提供了一种主动式电容笔(100，200)，包括：笔杆(10)；第一电极(11)，设置在所述笔杆(10)的一端，且所述第一电极(11)远离所述笔杆(10)的末端作为主动式电容笔(100，200)的笔尖；第二电极(12)，设置在所述笔杆(10)上、并在所述笔杆(10)的轴向方向上与所述第一电极(11)间隔设置；第三电极(13)，设置在所述笔杆(10)上、并在所述笔杆(10)的轴向方向上位于所述第一电极(11)和第二电极(12)之间；切换电路(14，24)，与所述第二电极(12)以及所述第三电极(13)相连，用于将所述第三电极(13)电连接至所述第二电极(12)、或断开所述第三电极(13)与所述第二电极(12)的电连接。本申请部分实施例还提供一种具有该种主动式电容笔(100，200)的电子终端。

Description

主动式电容笔及电子终端 技术领域
本申请涉及电容触控技术领域，特别涉及一种主动式电容笔及电子终端。
背景技术
随着技术的发展，电容触控技术已经成为主流的移动设备触控技术，主动式电容笔和电容式触控屏的配套使用在平板电脑、手机、显示屏等电子产品中已经越来越常见，其大大提升了人们在日常会议、授课、讨论过程中使用选择、描点、绘画、书写等功能的效率和便捷性。
发明人发现现有技术至少存在以下问题：当前主流的主动笔采用的协议主要有MPP(Microsoft Pen Protocol)协议、USI(Universal Stylus Initiative)协议以及Apple公司协议等，并且，目前只有MPP和USI两种协议能获取到共享的资源。由于各种协议有对应的编码方式、传输方式、笔尖结构以及平端设计要求，因此目前上面上的主动笔大都只支持一种协议，无法同时实现MPP和USI两种协议的触控操作。
发明内容
本申请部分实施例的目的在于提供一种主动式电容笔及电子终端，其能够兼顾MPP和USI两种协议的触控操作。
本申请实施例提供了一种主动式电容笔，其适用于电容式触控屏，以与电容式触控屏交互通信，所述主动式电容笔包括：笔杆；第一电极，设置在所述笔杆的一端，所述第一电极用于向所述电容式触控屏发送信号，且所述第一电极远离所述笔杆的末端作为主动式电容笔的笔尖；第二电极，设置在所述笔杆上、并在所述笔杆的轴向方向上与所述第一电极间隔设置，所述第二电极用于接收来自所述电容式触控屏发射的信号以及向所述电容式触控屏发射信号；第三电极，设置在所述笔杆上、并在所述笔杆的轴向方向上位于所述第一电极和第二电极之间；切换电路，与所述第二电极以及所述第三电极相连，所述切换电路用于在第一工作状态下将所述第三电极电连接至所述第二电极、并在第二工作状态下断开所述第三电极与所述第二电极的电连接。
本申请实施例还提供了一种电子终端，包括：电容式触控屏；主动式电容笔，与所述电容式触控屏匹配使用，所述主动式电容笔为如前所述的主动式电容笔。
本申请实施例相对于现有技术而言，在主动式电容笔同时设定三个电极，并且令第三电极在所述笔杆的轴向方向上位于所述第一电极和第二电极之间，如此以来：
a.当切换电路在第一工作状态下将所述第三电极电连接至所述第二电极时，位于笔杆前端的第一电极作为TIP电极、而第二电极和第三电极共同作为Ring电极，从而实现适配USI协议的触控笔，虽然第二电极与第一电极之间隔了一个第三电极，使得第二电极在触控笔使用状态下能够距离电容式触控屏较远，但与第二电极相连的第三电极变相降低了Ring电极的下缘高度，使得Ring电极在触控笔使用状态下的高度降低，同时也增 大了Ring电极的面积，高度的降低和面积的增加可以避免Ring电极接收的上行信号量较小，解决电容笔用户大手掌而导致上行信号量不足的问题；
b.当切换电路在第二工作状态下断开所述第三电极和所述第二电极的连接时，位于笔杆前端的第一电极作为TIP电极、而第二电极单独作为Ring电极，实现适配MPP协议的触控笔，由于单独作为Ring电极的第二电极与第一电极之间隔了一个第三电极，使得第二电极在触控笔使用状态下能够距离电容式触控屏较远，避免单独作为Ring电极的第二电极的高度较低而导致角度测量准确性降低的问题；
如此以来，通过切换电路的不同工作状态即可使得主动式电容笔能够兼顾MPP和USI两种协议下的不同结构设计需求，兼顾MPP和USI两种协议的触控操作。
在一个例子中，所述切换电路还用于在第二状态下将所述第三电极接地。如此设置，可以在不需要利用第三电极协同第二电极接收信号的时候，降低其对第二电极造成的信号接收干扰。
在一个例子中，所述第二电极为设置在所述笔杆上并绕所述轴向方向围成环形的环形电极，所述第二电极的下缘与所述第一电极的末端在所述笔杆的轴向方向上的距离不小于5.8毫米。如此设计，在触控笔使用状态下，第二电极的下缘与电容式触控屏的距离保持在5.8毫米及以上，能够在不影响电容笔小型化设计的前提条件下，确保第二电极的高度不至于过低而保证足够的角度测量准确性。
在一个例子中，所述第三电极为设置在所述笔杆上并绕所述轴向方向围成环形的环形电极，所述第三电极的下缘与所述第一电极的末端在所述笔杆的轴向方向上的距离不大于3.7毫米。如此设计，在触控笔使用状态下，与Ring电极(第二电极和第三电极共同作为Ring电极)距离电容式触控屏保持在3.7毫米及以内，能够在满足电容笔小型化设计的同时，提升Ring电极接收的上行信号量足够大。
在一个例子中，所述第一电极在笔杆轴向方向上的长度为3.5毫米～3.7毫米。如此设置，可以进一步满足电容笔小型化设计并确保电容笔(以USI协议工作的模式下)的Ring电极接收的上行信号量足够大。
在一个例子中，所述第三电极在笔杆轴向方向上的长度为2.1毫米～2.4毫米。如此设置，可以不影响电容笔小型化设计并确保电容笔(以MPP协议工作的模式下)的Ring电极保证足够的角度测量准确性。
在一个例子中，所述第二电极在笔杆轴向方向上的长度为3.0毫米～6.4毫米。如此设置，可以不影响电容笔小型化设计，并通过增加第二电极的尺寸来进一步提升(以USI协议工作的模式下)Ring电极接收的上行信号量。
在一个例子中，所述第二电极在笔杆轴向方向上的长度为3.0毫米～3.5毫米。如此设置，可以确保(以USI协议工作的模式下)Ring电极接收的上行信号量，并进一步满足电容笔的小型化设计需求。
在一个例子中，所述切换电路包括光耦开关，所述光耦开关的输出端分别与所述第二电极以及所述第三电极电连接，所述切换电路通过所述光耦开关的导通、断开而在所述第一工作状态和所述第二工作状态之间切换。采用光耦 开关实现第二电极和第三电极的导通和断开，使得光耦开关的输入端和第二电极的信号电路没有直接的电气连接，起到隔离干扰的作用。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是根据本申请第一实施例中的主动式电容笔结构示意图；
图2是根据本申请第一实施例中的主动式电容笔的切换电路结构示意图；
图3是根据本申请第二实施例中的主动式电容笔结构示意图；
图4是根据本申请第二实施例中的主动式电容笔的切换电路结构示意图；
图5是根据本申请第三实施例中的电子终端的结构示意图；
图6是根据本申请第四实施例中的另一种电子终端的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请部分实施例进行进一步详细说明。本领域的普通技术人员可以理解，在各实施例中，为了使读者更好地理解本申请而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施例的种种变化和修改，也可以实现本申请所要求保护的技术方案。以下各个实施例的划分是为了描述方便，不应对本申请的具体实现方式构成任何限定，各个实施例在不矛盾的前提下可以相互结合相互引用。
本申请第一实施例涉及一种主动式电容笔，其适用于电容式触控屏，以与电容式触控屏交互通信，所述主动式电容笔包括：笔杆；第一电极，设置在所述笔杆的一端，所述第一电极用于向所述电容式触控屏发送信号，且所述第一电极远离所述笔杆的末端作为主动式电容笔的笔尖；第二电极，设置在所述笔杆上、并在所述笔杆的轴向方向上与所述第一电极间隔设置，所述第二电极用于接收来自所述电容式触控屏发射的信号以及向所述电容式触控屏发射信号；第三电极，设置在所述笔杆上、并在所述笔杆的轴向方向上位于所述第一电极和第二电极之间；切换电路，与所述第二电极以及所述第三电极相连，所述切换电路用于在第一工作状态下将所述第三电极电连接至所述第二电极、并在第二工作状态下断开所述第三电极与所述第二电极的电连接。
本实施方式的核心在于：在作为笔尖电极的第一电极和第二电极之间额外设置一个第三电极，从而使电容笔可以在切换电路的切换下分别适配USI协议和MPP协议：
当电容笔适配USI协议时，将第二电极和第三电极电连接而共同作为信号收发电极，从而，一方面利用距离第一电极更近的第三电极降低整个信号收发电极的下缘高度，另一方面增大了信号收发电极的面积，高度的降低和面积的增加可以避免信号收发电极接收的上行信号量较小，解决电容笔用户大手掌而导致上行信号量不足的问题；
当电容比适配MPP协议时，断开第二电极和第三电极、而第二电极单独作为一个信号发送电极，由于第二电极与第一电极之间隔了一个第三电极，使得第二电极在触控笔使用状态下能够距离电容式触控屏较远，避免第二电极的高度较低而导致角度测量准确性降低的问题。
下面对本实施方式的主动式电容笔的实现细节进行具体的说明，以下内容仅为方便理解提供的实现细节，并非实施本方案的必须。
参见图1，本申请的第一实施方式提供的、适用于电容式触控屏(图未示)的主动式电容笔100，包括笔杆10，第一电极11、第二电极12、第三电极13以及切换电路14。
笔杆10作为主动式电容笔100的主体结构，用于承载主动式电容笔100的其他零部件。为了与其他电器元件电隔离，本实施方式中，笔杆10由绝缘材质制成，并为具有收容腔的中空结构，如此以来，该收容腔可以用来容置与第一电极11、第二电极12以及第三电极13电连接的控制器，进而控制主动式电容笔100与电容式触控屏进行信号收发，实现触控操作。当然可以理解的，在主动式电容笔100的外观设计要求不高时，该笔杆10也可以是实心结构，而在笔杆10的末端或外壁上可以额外设置控制器。
第一电极11设置在笔杆10的前端，以向电容式触控屏发送信号，第一电极11远离笔杆10的末端(下称末端)作为主动式电容笔100的笔尖(Tip)。本实施方式中，第一电极11为柱状电极，例如圆柱，如此以来，圆柱状的第一电极11的一端与笔杆10固定连接、另一端则远离笔杆10而作为主动式电容笔100的笔尖。需要说明的是，第一电极11的形状并不局限为圆柱状，在其他可实施方案中，第一电极11的形状也可以是顶点被设置为光滑曲面的椎体或锥台，如此以来，椎体或锥台状的第一电极11的底部尺寸较大而能与笔杆10牢固连接，而椎体或锥台状的第一电极11的顶部尺寸较小且圆滑，方便作为笔尖且不易刮花电容式触控屏。考虑到以上因素，第一电极11远离笔杆10的末端直径最好不小于1.72毫米，在一个例子中，第一电极11远离笔杆10的末端直径为 1.72毫米。
第二电极12设置在笔杆10上、并在笔杆10的轴向方向(笔杆10的长度方向，也即图1所述图面的竖直方向)上与第一电极11间隔设置，第二电极12用于接收来自电容式触控屏发射的信号。本实施方式中，第一电极11和第二电极12相互间隔并且远离对方，如此以来可以避免二者之间形成干扰。
第三电极13设置在笔杆10上、并在笔杆10的轴向方向上位于第一电极11和第二电极12之间。
切换电路14与第二电极12以及第三电极13相连，切换电路14在第一工作状态下将第三电极13电连接至第二电极12、并在第二工作状态下断开第三电极13与第二电极12的电连接。需要说明的是，切换电路14可以设置在中空的笔杆10之内，从而实现第二电极12与第三电极13之间的电气连接的通、断。具体的说，切换电路14可以选用连接在第二电极12和第三电极13之间的单刀开关、光耦开关等。
在一个例子中，切换电路14包括如图2所示的具有输入端、输出端、发光二极管D1、光电三极管140、MOS管141及MOS管142的光耦开关，光耦开关的输入端分别连接至发光二极管D1的正极和负极，用于控制发光二极管D1是否发光，MOS管141、142分别连接至输出端，光耦开关的输出端分别与第二电极12以及第三电极13电连接。
当发光二极管D1未被接通而不发光线时，光电三极管140截止，Vcc电源经由电阻R1直接将N沟道MOSFET(Metal-Oxide-Semiconductor Field-Effect Transistor,金属氧化物半导体场效晶体管，下称MOS管)141、142的栅极电压拉高，此刻MOS管141、142导通，第二电极12与第三电极13相 互电连接，切换电路14处于第一工作状态；当发光二极管D1被接通而发出光线时，光电三极管140导通，从而将N沟道MOS管141、142的栅极拉至低电压，此刻MOS管141、142截止，第二电极12与第三电极13之间的电连接被断开，切换电路14处于第二工作状态。如此以来，切换电路14通过光耦开关的导通、断开而在第一工作状态和第二工作状态之间切换。且光耦开关的输入端和第二电极12的信号电路没有直接的电气连接，起到隔离干扰的作用。
如前所述，本申请的第一实施方式在主动式电容笔100上同时设定三个电极，并且令第三电极13在笔杆10的轴向方向上位于第一电极11和第二电极12之间，如此以来：
a.当切换电路14在第一工作状态下将第三电极13电连接至第二电极12时，位于笔杆10前端的第一电极11作为TIP电极、而第二电极12和第三电极13共同作为信号收发电极，从而实现适配USI协议的触控笔，虽然第二电极12与第一电极11之间隔了一个第三电极13，使得第二电极12在触控笔使用状态下能够距离电容式触控屏较远，但与第二电极12相连的第三电极13变相降低了信号收发电极的下缘高度，使得信号收发电极在触控笔使用状态下的高度降低，同时也增大了信号收发电极的面积，高度的降低和面积的增加可以避免信号收发电极接收的上行信号量较小，解决电容笔用户大手掌而导致上行信号量不足的问题；
b.当切换电路14在第二工作状态下断开第三电极13和第二电极12的连接时，位于笔杆10前端的第一电极11作为发送信号的TIP电极、而第二电极12单独作为一个信号发送电极，实现适配MPP协议的触控笔，由于第二电极12与第一电极11之间隔了一个第三电极13，使得第二电极12在触控笔 使用状态下能够距离电容式触控屏较远，避免第二电极12的高度较低而导致角度测量准确性降低的问题；
如此以来，通过切换电路14的不同工作状态即可使得主动式电容笔100能够兼顾MPP和USI两种协议下的不同结构设计需求，兼顾MPP和USI两种协议的触控操作。
在一个例子中，第二电极12可以为设置在笔杆10上并绕笔杆10的轴向方向围成环形的环形电极(下称Ring电极)。需要说明的是，电容笔适配MPP协议时，TIP电极和Ring电极都作为发射电极来发射信号、并利用比TIP电极的高度更高的第二电极12接收的数据来测量电容笔的倾斜角度，而第二电极12需要距离电容式触控屏较远(也即需要第二电极12的高度足够高)才能够提升倾斜角度的测量精度，因此，更进一步的，本实施方式中，第二电极12的下缘与第一电极11的末端在所述笔杆的轴向方向上的距离不小于5.8毫米。如此以来，电容笔在适配MPP协议的使用状态下，单独作为Ring电极的第二电极12的下缘与电容式触控屏的距离保持在5.8毫米及以上，能够在不影响电容笔小型化设计的前提(电容笔不至于过长)条件下，确保第二电极12的高度不至于过低，以此保证适配MPP协议时、根据第二电极12接收的数据能够获取准确度较高的角度测量数据。在一个例子中，第二电极12在笔杆10的轴向方向上的长度L2为3.0毫米～6.4毫米，如此设置，可以不影响电容笔小型化设计，并通过增加第二电极12的尺寸来进一步提升(以USI协议工作的模式下)Ring电极接收的上行信号量。在一个例子中，第二电极12在笔杆10的轴向方向上的长度L2为3.0毫米～3.5毫米，如此设置，可以确保(以USI协议工作的模式下)Ring电极接收的上行信号量，并进一步满足电容笔的小型化设计需求。 具体的，本实施方式中，第二电极12在笔杆10的轴向方向上的长度L2为3.0毫米。
相应的，本实施方式中，第三电极13也可以为设置在笔杆10上并绕笔杆10的轴向方向围成环形的环形电极，从而可在与环形的第二电极12相连后共同形成Ring电极。并且，考虑到电容笔在适配USI协议的使用状态下，为了保证共同作为Ring电极的第二电极12和第三电极13需要距离电容式触控屏较近而提升Ring电极接收的上行信号量，因此，在一个例子中，第三电极13的下缘与第一电极11的末端在笔杆10的轴向方向上的距离D不大于3.7毫米。
由于第三电极13的下缘与第一电极11的末端在笔杆10的轴向方向上的距离D不大于3.7毫米，那么更进一步的，第一电极11在笔杆10轴向方向上的长度L1为3.5毫米～3.7毫米。如此设置，可以进一步满足电容笔小型化设计并确保电容笔(以USI协议工作的模式下)的Ring电极接收的上行信号量足够大。换个角度而言，当第一电极11在笔杆10轴向方向上的长度L1不足3.7毫米时，第三电极13与第一电极11在笔杆10轴向方向上是相互间隔设置的；而当第一电极11在笔杆10轴向方向上的长度L1为3.7毫米时，第三电极13与第一电极11在笔杆10轴向方向上是相邻设置的。具体的，本实施方式中，第一电极11在笔杆10的轴向方向上的长度L1为3.5毫米。
在一个例子中，第三电极13在笔杆10的轴向方向上的长度L3为2.1毫米～2.4毫米，如此设置，可以不影响电容笔小型化设计并确保电容笔(以MPP协议工作的模式下)的Ring电极保证足够的角度测量准确性。具体的，本实施方式中，第三电极13在笔杆10的轴向方向上的长度L3为2.4毫米。
需要说明的是，本实施方式中的上述各示例均为为方便理解进行的举例 说明，并不对本发明的技术方案构成限定。
参见图3，本申请的第二实施方式提供了另一种主动式电容笔200，本申请的第二实施方式提供的主动式电容笔200与第一实施方式提供的主动式电容笔100的结构大体相同，主动式电容笔200同样包括笔杆10，第一电极11、第二电极12以及第三电极13切换电路14。与第一实施方式提供的主动式电容笔100不同的是，第二实施方式提供的主动式电容笔200的切换电路24在第二状态下断开第三电极13与第二电极12的电连接的同时，还将第三电极13接地。
具体的，本实施方式中，切换电路24包括如图4所示的光耦开关，光耦开关的输入端分别连接至发光二极管D1的正极和负极，用于控制发光二极管D1是否发光，光耦开关的输出端141、142分别与第二电极12以及第三电极13电连接，并且，MOS管142的漏极在连接第三电极13的同时、经由电阻R2接地。
当发光二极管D1未被接通而不发光线时，光电三极管140截止，Vcc电源经由电阻R1直接将MOS管141、142的栅极电压拉高，此刻MOS管141、142导通，第二电极12与第三电极13相互电连接，切换电路14处于第一工作状态；当发光二极管D1被接通而发出光线时，光电三极管140导通，从而将N沟道MOS管141、142的栅极拉至低电压，此刻MOS管141、142截止，第二电极12与第三电极13之间的电连接被断开，切换电路14处于第二工作状态，并且第三电极13经由电阻R2接地。如此以来，可以在不需要利用第三电极13协同第二电极12作为信号收发电极接收/发送信号的时候，降低第三电极13对第二电极12造成的信号接收干扰。
此外，参见图5及图6，本申请的第三实施方式还提供一种电子终端， 电子终端包括电容式触控屏300以及如前所述的主动式电容笔100(图5所示)，或，电子终端包括电容式触控屏以及如前所述的主动式电容笔200(图6所示)，主动式电容笔100或200与所述电容式触控屏匹配300使用，通过切换电路14或24的不同工作状态即可使得主动式电容笔100或200能够兼顾MPP和USI两种协议下的不同结构设计需求，兼顾MPP和USI两种协议的触控操作。
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (10)

  1. 一种主动式电容笔，其特征在于，其适用于电容式触控屏，以与电容式触控屏交互通信，所述主动式电容笔包括：
    笔杆；
    第一电极，设置在所述笔杆的一端，所述第一电极用于向所述电容式触控屏发送信号，且所述第一电极远离所述笔杆的末端作为主动式电容笔的笔尖；
    第二电极，设置在所述笔杆上、并在所述笔杆的轴向方向上与所述第一电极间隔设置，所述第二电极用于接收来自所述电容式触控屏发射的信号以及向所述电容式触控屏发射信号；
    第三电极，设置在所述笔杆上、并在所述笔杆的轴向方向上位于所述第一电极和第二电极之间；
    切换电路，与所述第二电极以及所述第三电极相连，所述切换电路用于在第一工作状态下将所述第三电极电连接至所述第二电极、并在第二工作状态下断开所述第三电极与所述第二电极的电连接。
  2. 如权利要求1所述的主动式电容笔，其特征在于，所述切换电路还用于在第二状态下将所述第三电极接地。
  3. 如权利要求1所述的主动式电容笔，其特征在于，所述第二电极为设置在所述笔杆上并绕所述轴向方向围成环形的环形电极，所述第二电极的下缘与所述第一电极的末端在所述笔杆的轴向方向上的距离不小于5.8毫米。
  4. 如权利要求3所述的主动式电容笔，其特征在于，所述第三电极为设置在所述笔杆上并绕所述轴向方向围成环形的环形电极，所述第三电极的下缘与所述第一电极的末端在所述笔杆的轴向方向上的距离不大于3.7毫米。
  5. 如权利要求4所述的主动式电容笔，其特征在于，所述第一电极在笔杆轴向方向上的长度为3.5毫米～3.7毫米。
  6. 如权利要求5所述的主动式电容笔，其特征在于，所述第三电极在笔杆轴向方向上的长度为2.1毫米～2.4毫米。
  7. 如权利要求3所述的主动式电容笔，其特征在于，所述第二电极在笔杆轴向方向上的长度为3.0毫米～6.4毫米。
  8. 如权利要求7所述的主动式电容笔，其特征在于，所述第二电极在笔杆轴向方向上的长度为3.0毫米～3.5毫米。
  9. 如权利要求1所述的主动式电容笔，其特征在于，所述切换电路包括光耦开关，所述光耦开关的输出端分别与所述第二电极以及所述第三电极电连接，所述切换电路通过所述光耦开关的导通、断开而在所述第一工作状态和所述第二工作状态之间切换。
  10. 一种电子终端，其特征在于，包括：
    电容式触控屏；
    主动式电容笔，与所述电容式触控屏匹配使用，所述主动式电容笔为如权利要求1～9中任意一项所述的主动式电容笔。
PCT/CN2020/126526 2020-11-04 2020-11-04 主动式电容笔及电子终端 WO2022094802A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/126526 WO2022094802A1 (zh) 2020-11-04 2020-11-04 主动式电容笔及电子终端
US17/488,285 US11609666B2 (en) 2020-11-04 2021-09-28 Active capacitive pen for realizing touch operation under MPP protocol and USI protocol and electronic terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/126526 WO2022094802A1 (zh) 2020-11-04 2020-11-04 主动式电容笔及电子终端

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/488,285 Continuation US11609666B2 (en) 2020-11-04 2021-09-28 Active capacitive pen for realizing touch operation under MPP protocol and USI protocol and electronic terminal

Publications (1)

Publication Number Publication Date
WO2022094802A1 true WO2022094802A1 (zh) 2022-05-12

Family

ID=81378999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/126526 WO2022094802A1 (zh) 2020-11-04 2020-11-04 主动式电容笔及电子终端

Country Status (2)

Country Link
US (1) US11609666B2 (zh)
WO (1) WO2022094802A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105975109A (zh) * 2016-05-20 2016-09-28 汉王科技股份有限公司 主动电容笔及其姿态检测方法、电容式触控屏与触控系统
US20180196533A1 (en) * 2015-07-30 2018-07-12 Adonit Co., Ltd. Tip and stylus having the same
CN109240521A (zh) * 2018-09-21 2019-01-18 合肥京东方光电科技有限公司 主动式触控笔、触控输入系统及其驱动方法
CN110851006A (zh) * 2020-01-16 2020-02-28 深圳市千分一智能技术有限公司 触控笔模式切换方法、装置、设备及可读存储介质
US20200089342A1 (en) * 2010-02-05 2020-03-19 Wacom Co., Ltd. Pointer, position detection apparatus and position detection method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10025401B2 (en) * 2015-09-08 2018-07-17 Apple Inc. Active stylus ring electrode
US20170068330A1 (en) * 2015-09-09 2017-03-09 Apple Inc. Preprocessing for nonlinear stylus profiles
TWI621058B (zh) * 2017-07-17 2018-04-11 矽統科技股份有限公司 電容式觸控系統及其感測方法
US10585502B2 (en) * 2017-08-17 2020-03-10 Apple Inc. Touch sensor excitation using transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200089342A1 (en) * 2010-02-05 2020-03-19 Wacom Co., Ltd. Pointer, position detection apparatus and position detection method
US20180196533A1 (en) * 2015-07-30 2018-07-12 Adonit Co., Ltd. Tip and stylus having the same
CN105975109A (zh) * 2016-05-20 2016-09-28 汉王科技股份有限公司 主动电容笔及其姿态检测方法、电容式触控屏与触控系统
CN109240521A (zh) * 2018-09-21 2019-01-18 合肥京东方光电科技有限公司 主动式触控笔、触控输入系统及其驱动方法
CN110851006A (zh) * 2020-01-16 2020-02-28 深圳市千分一智能技术有限公司 触控笔模式切换方法、装置、设备及可读存储介质

Also Published As

Publication number Publication date
US11609666B2 (en) 2023-03-21
US20220137747A1 (en) 2022-05-05

Similar Documents

Publication Publication Date Title
CN213934829U (zh) 主动式电容笔及电子终端
EP1961261B1 (en) Control circuitry for providing an interface between connectable terminal and peripheral device circuitry
US20220301504A1 (en) Pixel circuit and display device
CN108966085B (zh) 自适应音频电路及移动终端
WO2022094802A1 (zh) 主动式电容笔及电子终端
US20240028543A1 (en) Control circuit of blind-mating display having two type-c interfaces, control device thereof, and control method thereof
CN113365185A (zh) 一种无线耳机及耳机系统
CN218123908U (zh) 一种扩展坞
CN217405088U (zh) 显示电路及显示装置
CN215268511U (zh) 一种支持100w充电的新型接口
KR102090508B1 (ko) 터치 시스템 및 그 전원 회로
US11605328B2 (en) Split-type display system
CN210093256U (zh) 多路蓝牙信号转WiFi无线网络信号的转换装置
CN112667542A (zh) 一种具有多功能的转接装置
CN212846735U (zh) 电容笔及电子设备组件
CN214900615U (zh) 低功耗待机的电源电路以及充电器
CN109361522A (zh) 一种同时支持以太网供电和以太网对外供电的无线ap
CN204833694U (zh) 一种多功能手机红外遥控发射装置
CN210899637U (zh) 多路蓝牙信号转5g移动网络信号的转换装置
CN214851224U (zh) 一种高频收发转换放电电路
CN113395061B (zh) 一种一键开关机装置及供电系统
CN112186842B (zh) 充电及通讯电路、电子装置
CN219577035U (zh) 一种link低电压高速模块改善电路
CN214151544U (zh) 一种交互平板
US11520437B2 (en) Touch device having switch circuits controlling between touch electrodes and drive chip, touch system and control method thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20960264

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20960264

Country of ref document: EP

Kind code of ref document: A1