WO2021167117A1 - Dispositif de détection de stylo électronique et appareil électronique le comprenant - Google Patents

Dispositif de détection de stylo électronique et appareil électronique le comprenant Download PDF

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Publication number
WO2021167117A1
WO2021167117A1 PCT/KR2020/002282 KR2020002282W WO2021167117A1 WO 2021167117 A1 WO2021167117 A1 WO 2021167117A1 KR 2020002282 W KR2020002282 W KR 2020002282W WO 2021167117 A1 WO2021167117 A1 WO 2021167117A1
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WIPO (PCT)
Prior art keywords
electronic pen
driving signal
sensor
processor
sensing
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Application number
PCT/KR2020/002282
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English (en)
Korean (ko)
Inventor
염동우
임재우
이만호
김영환
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2020/002282 priority Critical patent/WO2021167117A1/fr
Publication of WO2021167117A1 publication Critical patent/WO2021167117A1/fr

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    • 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
    • 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
    • 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
    • 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
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the present invention relates to an electronic pen sensing device and an electronic device having the same, and more particularly, to an electronic pen sensing device capable of sensing a plurality of electronic pens and an electronic device having the same.
  • the electronic pen has a pen shape and is a device used to input characters or images corresponding to the movement of the electronic pen when writing on a display of an electronic device or the like.
  • the electronic pen method may be classified into a pressure-sensitive type, a capacitive type, an Electro Magnetic Resonance (EMR) method that does not require a separate power source, an Active Electrostatic Solution (AES) method using an internal power source, and the like.
  • EMR Electro Magnetic Resonance
  • AES Active Electrostatic Solution
  • the conventional electronic pen sensor uses a plurality of X-channel sensors extending in a first direction and a plurality of Y-channel sensors extending in a second direction intersecting the first direction.
  • An object of the present invention is to provide an electronic pen sensing device capable of sensing a plurality of electronic pens and an electronic device having the same.
  • Another object of the present invention is to provide an electronic pen sensing device capable of calculating coordinate information of an electronic pen even in a heterogeneous sensor area where an electronic pen sensor is not disposed, and an electronic device having the same.
  • Another object of the present invention is to provide an electronic pen sensing device capable of implementing an electronic pen sensor and at least one heterogeneous sensor together, and an electronic device having the same.
  • an electronic pen sensing device and an electronic device having the same include an electronic pen sensor disposed above or below a display, and electrically connected to the electronic pen sensor, and the electronic pen and a processor that controls to output a driving signal to the sensor, and calculates coordinate information of the electronic pen based on the sensing signal sensed by the electronic pen sensor, wherein the electronic pen sensor includes a plurality of electronic pen sensors spaced apart from each other and arranged in a matrix form. It includes a loop coil, and the processor outputs a driving signal to each of the plurality of loop coils.
  • an electronic pen sensing device and an electronic device having the same include an electronic pen sensor disposed above or below a display, a heterogeneous sensor disposed below the display, and an electronic pen sensor electrically connected to the electronic pen sensor. and a processor that controls to output a driving signal to the electronic pen sensor, and calculates coordinate information of the electronic pen based on a sensing signal sensed by the electronic pen sensor, wherein the electronic pen sensors are spaced apart from each other in a matrix It includes a plurality of loop coils disposed in a shape, the processor outputs a driving signal to each of the plurality of loop coils, and the loop coil is not disposed in a first region corresponding to the heterogeneous sensor.
  • an electronic pen sensing device and an electronic device having the same include an electronic pen sensor disposed above or below a display, a heterogeneous sensor disposed below the display, and a lower portion of the display.
  • a processor configured to calculate coordinate information of the electronic pen based on a sensing signal sensed by a second heterogeneous sensor disposed therein, electrically connected to the electronic pen sensor, and controlling to output a driving signal to the electronic pen sensor includes, wherein the electronic pen sensor includes a plurality of loop coils spaced apart from each other and arranged in a matrix form, and the processor outputs a driving signal to each of the plurality of loop coils, and in a first area corresponding to the heterogeneous sensor, The loop coil is not disposed, and the loop coil is not disposed in the second region corresponding to the second heterogeneous sensor.
  • An electronic pen sensing apparatus and an electronic device having the same include an electronic pen sensor disposed on or below a display, and electrically connected to the electronic pen sensor, and output a driving signal to the electronic pen sensor and a processor for calculating coordinate information of the electronic pen based on a sensing signal sensed by the electronic pen sensor, wherein the electronic pen sensor includes a plurality of loop coils spaced apart from each other and arranged in a matrix form, The processor outputs a driving signal to each of the plurality of loop coils. Accordingly, it is possible to sense the position of the electronic pen in the region corresponding to the plurality of loop coils. In particular, it is possible to sense a plurality of electronic pens.
  • the processor may sequentially output driving signals to the plurality of loop coils and calculate coordinate information of the electronic pen based on the sensing signal sensed by the electronic pen sensor. Accordingly, coordinate information of the electronic pen can be calculated.
  • the processor may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensed sensing signal. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor may calculate a point between the two lowest levels as a maximum level point and calculate the maximum level point as coordinate information of the electronic pen. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor sequentially applies a driving signal to a loop coil of a first horizontal line among a plurality of loop coils in a matrix form, and then sequentially applies a driving signal to a loop coil in a second horizontal line among a plurality of loop coils in a matrix form
  • a driving signal may be applied. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor sequentially applies a driving signal to a loop coil of a first horizontal line among a plurality of loop coils in a matrix form, and then sequentially applies a driving signal to a loop coil in a second horizontal line among a plurality of loop coils in a matrix form
  • a driving signal may be applied. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor may sequentially apply a driving signal to a loop coil in a diagonal direction among a plurality of loop coils in a matrix form. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor may control the driving and sensing to be performed on the first region. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the second time period after the first period a driving signal may be output to a vertical line including the first point among the plurality of loop coils. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the second period after the first period, a driving signal may be output to a horizontal line including the first point among the plurality of loop coils. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor sequentially outputs the first driving signal and the second driving signal to the first region during the first period, and for a second period after the first period, the first The third driving signal and the fourth driving signal may be sequentially output to the second region spaced apart from the region. Accordingly, it is possible to sense a plurality of electronic pens spaced apart from each other.
  • the processor sequentially outputs the first driving signal and the second driving signal to the first region during the first period, and sequentially outputs the first driving signal and the second driving signal to the second region spaced apart from the first region.
  • the third driving signal and the fourth driving signal may be sequentially output. Accordingly, it is possible to sense a plurality of electronic pens spaced apart from each other.
  • the processor applies the first driving signal and the second driving signal to the first region during the first period for sensing the plurality of electronic pens.
  • the third driving signal and the fourth driving signal may be sequentially output to a second region spaced apart from the first region. Accordingly, it is possible to sense a plurality of electronic pens spaced apart from each other.
  • the processor is configured to provide a first driving signal and a second driving signal in the first region during a first period for sensing the plurality of electronic pens. may be sequentially output, and a third driving signal and a fourth driving signal may be sequentially output to a second region spaced apart from the first region. Accordingly, it is possible to sense a plurality of electronic pens.
  • the processor may control the frequencies of the first driving signal and the second driving signal to be different from the frequencies of the third driving signal and the fourth driving signal. Accordingly, it is possible to sense a plurality of electronic pens.
  • the processor outputs a first driving signal of a first frequency and a second driving signal of a first frequency to the first region during a first period for sensing the plurality of electronic pens, and a second driving signal of the first frequency is performed after the first period
  • a third driving signal of a first frequency and a fourth driving signal of a first frequency are sequentially output to a second region spaced apart from the first region, and during a third period after the second period, the first
  • the fifth driving signal of the first frequency and the sixth driving signal of the first frequency may be output to the region, and the seventh driving signal of the second frequency and the eighth driving signal of the second frequency may be output to the second region.
  • an electronic pen sensing device and an electronic device having the same include an electronic pen sensor disposed above or below a display, a heterogeneous sensor disposed below the display, and an electronic pen sensor electrically connected to the electronic pen sensor. and a processor that controls to output a driving signal to the electronic pen sensor, and calculates coordinate information of the electronic pen based on a sensing signal sensed by the electronic pen sensor, wherein the electronic pen sensors are spaced apart from each other in a matrix It includes a plurality of loop coils disposed in a shape, the processor outputs a driving signal to each of the plurality of loop coils, and the loop coil is not disposed in a first region corresponding to the heterogeneous sensor.
  • the processor calculates first coordinate information of the electronic pen based on the first sensing signal sensed by the electronic pen sensor, and the electronic pen is located in the second area.
  • the second coordinate information of the electronic pen may be calculated based on the compensation signal obtained by compensating the first sensing signal. Accordingly, coordinate information of the electronic pen can be calculated even in a heterogeneous sensor area where the electronic pen sensor is not disposed.
  • Second coordinate information of the electronic pen may be calculated. Accordingly, coordinate information of the electronic pen can be calculated even in a heterogeneous sensor area where the electronic pen sensor is not disposed.
  • the processor controls to output a driving signal of the first frequency when the electronic pen is located at a position greater than or equal to the first distance, and when the electronic pen is located between the first distance and the second distance, a higher frequency than the first frequency
  • Control to output a driving signal of a second frequency, and when the electronic pen is located within a third distance closer than the second distance, it is possible to control to output a driving signal of a third driving frequency higher than the second driving frequency. Accordingly, it is possible to sense the electronic pen while efficiently using power consumption.
  • a through hole may be formed in a portion of an area in which an electronic pen sensor is disposed, and a heterogeneous sensor may be disposed in the through hole. Accordingly, it is possible to arrange the heterogeneous sensor and the electronic pen sensor on the same layer.
  • an electronic pen sensing device and an electronic device having the same include an electronic pen sensor disposed above or below a display, a heterogeneous sensor disposed below the display, and a lower portion of the display.
  • a processor configured to calculate coordinate information of the electronic pen based on a sensing signal sensed by a second heterogeneous sensor disposed therein, electrically connected to the electronic pen sensor, and controlling to output a driving signal to the electronic pen sensor includes, wherein the electronic pen sensor includes a plurality of loop coils spaced apart from each other and arranged in a matrix form, and the processor outputs a driving signal to each of the plurality of loop coils, and in a first area corresponding to the heterogeneous sensor, The loop coil is not disposed, and the loop coil is not disposed in the second region corresponding to the second heterogeneous sensor.
  • the electronic pen sensor, the heterogeneous sensor, and the second heterogeneous sensor can be implemented together.
  • FIG. 1 is a diagram illustrating an electronic pen system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an electronic pen according to an embodiment of the present invention.
  • FIG. 3 is an internal block diagram of the electronic pen of FIG. 2 .
  • FIG. 4 is a diagram illustrating a pen mode operation method of the electronic pen of FIG. 2 .
  • FIG. 5 is a diagram referenced to explain a pen mode and a pointing mode of the electronic pen of FIG. 2 .
  • 6A is a perspective view of a mobile terminal, which is an example of an electronic device, viewed from the front according to an embodiment of the present invention.
  • FIG. 6B is a rear perspective view of the mobile terminal shown in FIG. 6A.
  • FIG. 7 is a block diagram of the mobile terminal of FIG.
  • FIG. 8 is a diagram illustrating an electronic pen sensing device according to an embodiment of the present invention.
  • 9A to 9C are diagrams referred to in the description of the operation of FIG. 8 .
  • FIGS. 10A to 10B are diagrams illustrating an electronic pen sensing device according to another embodiment of the present invention.
  • 11A to 22 are diagrams referenced for explaining the operation of the electronic pen sensing device according to another embodiment of the present invention.
  • 23 to 24 are diagrams illustrating an electronic pen sensing device according to another embodiment of the present invention.
  • 25 to 32 are diagrams referenced for explaining the operation of the electronic pen sensing device according to another embodiment of the present invention.
  • module and “part” for the components used in the following description are given simply in consideration of the ease of writing the present specification, and do not give a particularly important meaning or role by themselves. Accordingly, the terms “module” and “unit” may be used interchangeably.
  • FIG. 1 is a diagram illustrating an electronic pen system according to an embodiment of the present invention.
  • the electronic pen system 10 may include an electronic device 100 including an electronic pen 400 and a display 180 .
  • the electronic pen 400 may be implemented in various ways, such as an electromagnetic resonance method, an active method, an optical method, and the like.
  • the electronic device 100 includes an electronic pen sensor ( 148 in FIG. 7 ) for recognizing the electronic pen 400 .
  • the electronic pen sensor ( 148 in FIG. 7 ) includes a plurality of X-channel sensors extending in a first direction and a plurality of Y-channel sensors extending in a second direction intersecting the first direction, the plurality of electronic pens
  • the disadvantage is that it cannot sense
  • the electronic pen sensor ( 148 in FIG. 7 ) includes a plurality of loop coils A0 to Mn spaced apart from each other and arranged in a matrix form.
  • the electronic pen sensor ( 148 in FIG. 7 ) is implemented as an island type.
  • the electronic pen sensor (148 in FIG. 7) is provided with a plurality of loop coils A0 to Mn spaced apart from each other and arranged in a matrix form, sequential driving of the plurality of loop coils A0 to Mn is performed. , in particular, for each region, separate driving and sensing are possible. Accordingly, it is possible to sense a plurality of electronic pens.
  • the electronic device 100 may further include various heterogeneous sensors ( 149 of FIG. 7 ), such as a fingerprint sensor or a camera sensor.
  • various heterogeneous sensors such as a fingerprint sensor or a camera sensor.
  • the electronic pen sensor ( 148 in FIG. 7 ) and the heterogeneous sensor ( 149 in FIG. 7 ) are disposed under the display 180 .
  • the heterogeneous sensor ( 149 in FIG. 7 ) When the electronic pen sensor ( 148 in FIG. 7 ) and the heterogeneous sensor ( 149 in FIG. 7 ) are disposed under the display 180 , the heterogeneous sensor ( 149 in FIG. 7 ) performs a sensor operation. It is preferable that the electronic pen sensor ( 148 in FIG. 7 ) is not disposed in the disposed first area.
  • the electronic pen sensor when the electronic pen sensor ( 148 in FIG. 7 ) cannot detect the sensing signal in the first region, it compensates for the previously sensed signal, and then in the first region or in the vicinity of the first region. to calculate the coordinate information of Accordingly, it is possible to sense a plurality of electronic pens. As a result, the electronic pen sensor and at least one heterogeneous sensor can be implemented together.
  • the electronic device 100 may include various examples such as a mobile terminal, a tablet, a notebook computer, a TV, a monitor, and a vehicle display device.
  • a mobile terminal will be mainly described.
  • FIG. 2 is a diagram illustrating an electronic pen according to an embodiment of the present invention.
  • the electronic pen 400 includes a case CSE having a hollow at one end, and one end of the case CSE through the hollow, and one end is exposed to the outside. It may include a pen tip (PTP), a cap (CAP) surrounding the other end of the pen tip (PTP), and a second case (RCS) coupled to the other end of the case (CSE). Accordingly, the appearance of the electronic pen 400 can be formed.
  • a case CSE having a hollow at one end, and one end of the case CSE through the hollow, and one end is exposed to the outside. It may include a pen tip (PTP), a cap (CAP) surrounding the other end of the pen tip (PTP), and a second case (RCS) coupled to the other end of the case (CSE). Accordingly, the appearance of the electronic pen 400 can be formed.
  • PTP pen tip
  • CAP cap
  • RCS second case
  • a button BTN for user manipulation may be formed on one surface of the case CSE.
  • the electronic pen 400 is an electronic pen capable of an electromagnetic resonance method or an active method. ) may be sensed using an internal core (CRE), coil (COL), capacitor (CAT), and the like, and based on the sensed signal, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • CRE internal core
  • COL coil
  • CAT capacitor
  • the electronic pen sensing device UD in the electronic device 100 may calculate coordinate information of the electronic pen 400 based on the electromagnetic signal having a variable frequency or level.
  • the electronic pen 400 is the electronic device 100 .
  • An electromagnetic field generated by the electronic pen sensing device UD may be sensed and, based on the sensed signal, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • the electronic pen sensing device UD in the electronic device 100 may be sensed, and based on the sensed signal, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • case CSE and the second case RCS are coupled using a coupling member CNP, and in particular, the first pin PNa is coupled to the opening formed in the case CSE, and the coupling member A second fin PNb may be coupled to the opening formed in the CNP.
  • the electronic pen 400 is an electronic pen capable of an optical method, and is disposed in the case CSE, and through a pen tip PTP, a light output module 458 for outputting light; It is disposed in the case (CSE), through the pen tip (PTP), may further include a light sensor 448 for sensing the received light corresponding to the light output from the light output module 458 .
  • the electronic pen 400 for the pointing mode, is disposed in the case (CSE), the inertial sensor module (IMU) for sensing motion, and is disposed on the case (CSE) It includes an input button BTN, a pressure sensor TSS sensing the pressure of the input button BTN, and a communication unit 420 disposed in the case CSE and exchanging data with an external electronic device. Accordingly, it is possible to sense a plurality of electronic pens. In particular, even when out of the display 180 area, writing is possible in the pen mode.
  • FIG. 3 is an internal block diagram of the electronic pen of FIG. 2 .
  • the electronic pen 400 includes a wireless communication unit 420 , a user input unit 435 , a sensor unit 440 , an output unit 450 , a power supply unit 460 , a storage unit 470 , and a processor. (480).
  • the wireless communication unit 420 may perform pairing with the electronic device 100 and exchange data with the paired device.
  • the wireless communication unit 420 may transmit coordinate information to the electronic device 100 .
  • the wireless communication unit 420 may include an RF module 421 capable of transmitting and receiving signals to and from the electronic device 100 according to the RF communication standard.
  • the wireless communication unit 420 may include an IR module 423 capable of transmitting and receiving signals to and from the electronic device 100 according to the IR communication standard.
  • the wireless communication unit 420 When operating in the pointing mode, the wireless communication unit 420 transmits information about the movement of the electronic pen 400 to the electronic device 100 through the RF module 421 .
  • the wireless communication unit 420 may transmit the calculated coordinate information through the RF module 421 according to the operations of the light output module 458 and the light sensor 448 .
  • the wireless communication unit 420 may receive a signal transmitted by the electronic device 100 through the RF module 421 .
  • the wireless communication unit 420 may transmit commands related to power on/off, channel change, volume change, etc. to the electronic device 100 through the IR module 423 as necessary.
  • the user input unit 435 may include a keypad, a button, a touch pad, or a touch screen.
  • the user may input a command related to the electronic pen 400 by manipulating the user input unit 435 .
  • the user input unit 435 includes a hard key button
  • the user may input a command related to the electronic pen 400 through a push operation of the hard key button.
  • the sensor unit 440 may include an electromagnetic sensor (EMS), an inertial sensor module (IMU), an optical module (OPU), a pressure sensor (TSS), and the like.
  • EMS electromagnetic sensor
  • IMU inertial sensor module
  • OPU optical module
  • TSS pressure sensor
  • the electromagnetic sensor EMS may sense a surrounding electromagnetic field.
  • the electromagnetic sensor (EMS), the electromagnetic field generated by the electronic pen sensing device (UD) in the electronic device 100, the core (CRE), the coil (COL), the capacitor (CAT), etc. inside the electronic pen 400 may be used to sense, and based on the sensed signal, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • the electronic pen sensing device UD in the electronic device 100 may calculate coordinate information of the electronic pen 400 based on the electromagnetic signal having a variable frequency or level.
  • the inertial sensor module (IMU) is disposed in the case (CSE) and may sense the movement of the electronic pen 400 .
  • the inertial sensor module may include a gyro sensor 441 or an acceleration sensor 443 .
  • the gyro sensor 441 may sense information about the movement of the electronic pen 400 .
  • the gyro sensor 441 may sense information about the operation of the electronic pen 400 based on x, y, and z axes.
  • the acceleration sensor 443 may sense information about the moving speed of the electronic pen 400 .
  • the optical module OPU is disposed in the case CSE, and through the pen tip PTP, an optical output module 458 for outputting light, and disposed in the case CSE, through the pen tip PTP, light
  • An optical sensor 448 for sensing the received light corresponding to the light output from the output module 458 may be provided.
  • the pressure sensor TSS is disposed under the input button BTN disposed on the case CSE, and may sense the pressure of the input button BTN.
  • the level of the signal sensed by the pressure sensor TSS or the duty of the sensed signal may be varied according to the force of the input button BTN.
  • the output unit 450 may output an image or audio signal corresponding to an operation of the user input unit 435 or a signal transmitted from the electronic device 100 . Through the output unit 450 , the user may recognize whether the user input unit 435 is operated or whether the electronic device 100 is controlled.
  • the output unit 450 is an LED module 451 that is turned on when the user input unit 435 is manipulated or a signal is transmitted or received with the electronic device 100 through the wireless communication unit 420, and a vibration module that generates vibration 453 , a sound output module 455 for outputting sound, or a display module 457 for outputting an image may be provided.
  • the power supply unit 460 supplies power to the inside of the electronic pen 400 .
  • the power supply unit 460 may reduce power consumption by stopping the power supply when the electronic pen 400 does not move for a predetermined period of time.
  • the power supply unit 460 may resume power supply when a predetermined key provided in the electronic pen 400 is operated.
  • the storage unit 470 may store various types of programs and application data required for control or operation of the electronic pen 400 .
  • the electronic pen 400 when the electronic pen 400 is paired with the electronic device 100 and wirelessly transmits and receives a signal through the RF module 421 , the electronic pen 400 and the electronic device 100 perform a predetermined frequency. It transmits and receives signals through the band.
  • the processor 480 may store, in the storage unit 470 , information about a frequency band for wirelessly transmitting/receiving a signal to and from the electronic device 100 paired with the electronic pen 400 in the storage unit 470 , and may refer to it.
  • the processor 480 controls all matters related to the control of the electronic pen 400 .
  • the processor 480 transmits a signal corresponding to a predetermined key operation of the user input unit 435 or coordinate information or motion information sensed by the sensor unit 440 to the paired electronic device 100 through the wireless communication unit 420 .
  • the user input interface unit (not shown) of the electronic device 100 includes a wireless communication unit (not shown) capable of wirelessly transmitting and receiving signals to and from the electronic pen 400 , and a pointer corresponding to the operation of the electronic pen 400 .
  • a coordinate value calculator (not shown) capable of calculating a coordinate value may be provided.
  • the user input interface unit may wirelessly transmit and receive signals to and from the electronic pen 400 through an RF module (not shown).
  • a signal transmitted by the electronic pen 400 according to the IR communication standard may be received through an IR module (not shown).
  • the coordinate value calculator (not shown) corrects the hand shake or error from the received signal corresponding to the operation of the electronic pen 400 to display the coordinate values (x, y) of the pointer 205 on the display 180 . ) can be calculated.
  • the electronic pen 400 transmission signal input to the electronic device 100 through a user input interface unit (not shown) is transmitted to a signal processing unit (not shown) of the electronic device 100 .
  • the signal processing unit may determine information about the operation and key manipulation of the electronic pen 400 from the signal transmitted from the electronic pen 400 , and may control the electronic device 100 in response thereto.
  • the electronic pen 400 may calculate a pointer coordinate value corresponding to the operation and output it to the user input interface unit (not shown) of the electronic device 100 .
  • the user input interface unit (not shown) of the electronic device 100 may transmit information about the received pointer coordinate values to the signal processing unit (not shown) without a separate hand shake or error correction process.
  • the coordinate value calculating unit (not shown) is provided inside the signal processing unit (not shown), not the user input interface unit (not shown) unlike the drawing.
  • FIG. 4 is a diagram illustrating a pen mode operation method of the electronic pen of FIG. 2 .
  • the electromagnetic sensor EMS of the electronic pen 400 detects the electromagnetic field generated by the electronic pen sensing device UD in the electronic device 100 to the core of the electronic pen 400 .
  • CRE electromagnetic field generated by the electronic pen sensing device UD in the electronic device 100 to the core of the electronic pen 400 .
  • a coil (COL) may be sensed, and based on the sensed signal, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • CAT capacitor
  • the electronic pen sensing device UD in the electronic device 100 may calculate coordinate information of the electronic pen 400 based on the electromagnetic signal having a variable frequency or level.
  • the optical sensor 448 of the electronic pen 400 may also operate.
  • the optical sensor 448 of the electronic pen 400 senses the received light corresponding to the light output from the output module 458 .
  • the processor 480 may calculate coordinate information based on the continuously received received light, and control the calculated coordinate information to be transmitted to the paired electronic device 100 .
  • the communication unit 425 transmits coordinate information according to the writing mode to the paired electronic device 100 through the RF module 421 or the like.
  • the optical sensor 448 responds to the light output from the output module 458 . sense the received light.
  • the processor 480 may calculate coordinate information based on the continuously received received light, and control the calculated coordinate information to be transmitted to the paired electronic device 100 .
  • FIG. 5 is a diagram referenced to explain a pen mode and a pointing mode of the electronic pen of FIG. 2 .
  • FIG. 5A illustrates the pen mode operation of the electronic pen 400 .
  • the electromagnetic sensor EMS of the electronic pen 400 may The electromagnetic field generated by the electronic pen sensing device (UD) in 100 is sensed by using the core (CRE), coil (COL), capacitor (CAT), etc. inside the electronic pen 400 , and is applied to the sensed signal. Based on this, an electromagnetic signal having a variable frequency or level may be output to the outside.
  • CRE core
  • COL coil
  • CAT capacitor
  • the electronic pen sensing device UD in the electronic device 100 may calculate coordinate information of the electronic pen 400 based on the electromagnetic signal having a variable frequency or level.
  • the communication unit 420 of the electronic pen 400 in the pen mode, the light output module According to the operation of the 458 and the optical sensor 448, the calculated coordinate information may be transmitted to the outside.
  • the communication unit 420 may perform pairing with the electronic device 100 . Accordingly, writing according to the pen mode operation is performed in the electronic device 100 .
  • the communication unit 420 transmits a pairing request signal to the electronic device 100 and receives a pairing response signal from the electronic device 100 . can do. Accordingly, writing according to the pen mode operation is performed in the mobile terminal 100 .
  • the inertial sensor module may continue to sense motion information during the pen mode operation. Accordingly, it is possible to switch between the pen mode and the point mode.
  • FIG. 5B illustrates the pointing mode of the electronic pen 400 .
  • the pointing mode may be switched.
  • the communication unit 420 of the electronic pen 400 transmits coordinate information calculated by the inertial sensor module (IMU) in the pointing mode. can be transmitted externally.
  • IMU inertial sensor module
  • the communication unit 420 may perform pairing with the electronic device 100 . Accordingly, pointing according to the pointing mode operation is performed in the electronic device 100 .
  • the communication unit 420 transmits a pairing request signal to the electronic device 100 and receives a pairing response signal from the electronic device 100 . can do. Accordingly, pointing according to the pointing mode operation is performed in the electronic device 100 .
  • the electronic pen 400 may operate in a standby mode when there is no movement sensed by the inertial sensor module (IMU) during the pointing mode or pen mode operation. Thereby, it operates in the standby mode, and power consumption can be reduced.
  • IMU inertial sensor module
  • the communication unit 420 may transmit motion information sensed by the inertial sensor module IMU and operation information of the input button BTN to the outside. Accordingly, a drag operation in the pointing mode is enabled.
  • the communication unit 420 transmits the motion information sensed by the inertial sensor module IMU and the sensing information of the pressure sensor TSS to the outside. can Accordingly, zoom-in/zoom-out in the pointing mode, variable depth, and the like are possible.
  • the communication unit 420 may transmit level information of a signal sensed by the pressure sensor TSS to the outside together with motion information. Accordingly, zoom-in/zoom-out in the pointing mode, variable depth, and the like are possible.
  • the electronic pen 400 when the level of the optical signal sensed by the optical sensor 448 is equal to or greater than the reference value, the electronic pen 400 operates in the pen mode, and the light sensed by the optical sensor 448 is When the level of the signal is less than or equal to the reference value, the pointing mode may be operated. Accordingly, it is possible to switch between the pen mode and the point mode.
  • the electronic pen 400 may operate in a pen mode according to a first operation of the input button BTN.
  • the electronic pen 400 may operate in the pointing mode according to the second operation of the input button BTN. Accordingly, it is possible to switch between the pen mode and the point mode.
  • the first operation of the input button BTN and the second operation of the input button BTN may be the same operation, and, for example, may be toggled to perform a mode change.
  • FIG. 6A is a front perspective view of a mobile terminal as an example of an electronic device according to an embodiment of the present invention
  • FIG. 6B is a rear perspective view of the mobile terminal shown in FIG. 6A.
  • the case constituting the exterior of the mobile terminal 100 is formed by the front case 100 - 1 and the rear case 100 - 2 .
  • Various electronic components may be embedded in the space formed by the front case 100-1 and the rear case 100-2.
  • the front case 100-1 includes a display 180, a first sound output module 153a, a first camera 195a, a second camera 195o, and first to third user input units 130a and 130b. , 130c) may be disposed.
  • a fourth user input unit 130d, a fifth user input unit 130e, and first to third microphones 123a, 123b, and 123c may be disposed on a side surface of the rear case 100-2.
  • the display 180 may operate as a touch screen by overlapping touch pads in a layered structure.
  • the first sound output module 153a may be implemented in the form of a receiver or a speaker.
  • the first camera 195a may be implemented in a form suitable for capturing an image or a moving picture of a user or the like.
  • the microphone 123 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.
  • the first to fifth user input units 130a, 130b, 130c, 130d, and 130e and the sixth and seventh user input units 130f and 130g to be described later may be collectively referred to as a user input unit 130 .
  • the first to second microphones 123a and 123b are disposed on the upper side of the rear case 100-2, that is, on the upper side of the mobile terminal 100, for audio signal collection, and the third microphone 123c,
  • the lower side of the rear case 100-2 that is, the lower side of the mobile terminal 100, may be disposed to collect audio signals.
  • a third camera 195b , a fourth camera 195c , and a fourth microphone may be additionally mounted on the rear surface of the rear case 100-2, and the rear case 100
  • the sixth and seventh user input units 130f and 130g and the interface unit 175 may be disposed on the side of ⁇ 2).
  • the third camera 195b may have a photographing direction substantially opposite to that of the first camera 195a, and may have different pixels from the first camera 195a.
  • a flash (not shown) and a mirror (not shown) may be additionally disposed adjacent to the third camera 195b.
  • another camera may be installed adjacent to the third camera 195b and used for capturing a 3D stereoscopic image.
  • a second sound output module (not shown) may be additionally disposed in the rear case 100 - 2 .
  • the second sound output module may implement a stereo function together with the first sound output module 153a, and may be used for a call in a speakerphone mode.
  • a power supply unit 190 for supplying power to the mobile terminal 100 may be mounted on the rear case 100 - 2 side.
  • the power supply unit 190 is, for example, a rechargeable battery, and may be detachably coupled to the rear case 100 - 2 for charging or the like.
  • the fourth microphone 123d may be disposed on the front side of the rear case 100 - 2 , that is, on the back side of the mobile terminal 100 for audio signal collection.
  • FIG. 7 is a block diagram of the mobile terminal of FIG.
  • the mobile terminal 100 includes a wireless communication unit 110 , an audio/video (A/V) input unit 120 , a user input unit 130 , a sensing unit 140 , an output unit 150 , and a memory. 160 , an interface unit 175 , a processor 170 , and a power supply unit 190 .
  • A/V audio/video
  • the mobile terminal 100 includes a wireless communication unit 110 , an audio/video (A/V) input unit 120 , a user input unit 130 , a sensing unit 140 , an output unit 150 , and a memory. 160 , an interface unit 175 , a processor 170 , and a power supply unit 190 .
  • A/V audio/video
  • the wireless communication unit 110 may include a broadcast reception module 111 , a mobile communication module 113 , a wireless Internet module 115 , a short-range communication module 117 , and a GPS module 119 .
  • the broadcast reception module 111 may receive at least one of a broadcast signal and broadcast-related information from an external broadcast management server through a broadcast channel.
  • a broadcast signal and/or broadcast-related information received through the broadcast reception module 111 may be stored in the memory 160 .
  • the mobile communication module 113 may transmit/receive a wireless signal to/from at least one of a base station, an external terminal, and a server on a mobile communication network.
  • the wireless signal may include a voice call signal, a video call call signal, or various types of data according to text/multimedia message transmission/reception.
  • the wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 may be built-in or external to the mobile terminal 100 .
  • the short-range communication module 117 refers to a module for short-range communication.
  • Bluetooth, RFID (Radio Frequency Identification), infrared data association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), etc. may be used as short-range communication technologies.
  • the Global Position System (GPS) module 119 receives location information from a plurality of GPS satellites.
  • the A/V (Audio/Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 195 , a microphone 123 , and the like.
  • the camera 195 may process an image frame such as a still image or a moving image obtained by an image sensor in a video call mode or a shooting mode. Then, the processed image frame may be displayed on the display 180 .
  • the image frame processed by the camera 195 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110 .
  • Two or more cameras 195 may be provided according to the configuration of the terminal.
  • the camera 195 may include the first to fourth cameras 195a , 195o , 195b , and 195c illustrated in FIG. 6A .
  • the microphone 123 may receive an external audio signal by a microphone in a display off mode, for example, a call mode, a recording mode, or a voice recognition mode, and process it as electrical voice data.
  • a display off mode for example, a call mode, a recording mode, or a voice recognition mode
  • the microphones 123 may be disposed as a plurality of microphones 123 at different positions. An audio signal received from each microphone may be processed by the processor 170 or the like.
  • the user input unit 130 generates key input data input by the user to control the operation of the terminal.
  • the user input unit 130 may include a keypad, a dome switch, a touch pad (static pressure/capacitance), and the like, through which a command or information can be input by a user's pressing or touch manipulation.
  • a touch pad static pressure/capacitance
  • the touch pad forms a layer structure with the display 180 to be described later, it may be referred to as a touch screen.
  • the sensing unit 140 is configured to control the operation of the mobile terminal 100 by sensing the current state of the mobile terminal 100 such as an open/closed state of the mobile terminal 100 , a location of the mobile terminal 100 , and whether or not there is a user's contact. A sensing signal can be generated.
  • the sensing unit 140 may include a proximity sensor 141 , a pressure sensor 143 , a motion sensor 145 , a touch sensor 146 , an electronic pen sensor 146 , a fingerprint sensor 149 , and the like.
  • the proximity sensor 141 may detect the presence or absence of an object approaching the mobile terminal 100 or an object existing in the vicinity of the mobile terminal 100 without mechanical contact.
  • the proximity sensor 141 may detect a proximity object by using a change in an alternating current or static magnetic field, or a change in capacitance, or the like.
  • the pressure sensor 143 may detect whether pressure is applied to the mobile terminal 100 and the magnitude of the pressure.
  • the motion sensor 145 may detect a position or movement of the mobile terminal 100 using an acceleration sensor, a gyro sensor, or the like.
  • the touch sensor 146 may detect a touch input by a user's finger or a touch input by a specific pen.
  • the touch screen panel may include a touch sensor 146 for detecting location information and intensity information of a touch input.
  • the sensing signal sensed by the touch sensor 146 may be transmitted to the processor 170 .
  • the electronic pen sensor 146 is disposed under the display 180 , and may sense movement of the electronic pen 400 , pen pressure, and the like. In addition, a tilt, a tilt, etc. of the electronic pen 400 may be further sensed.
  • the electronic pen sensor 146 may be implemented as one device with a processor (not shown). This may be referred to as an electronic pen sensing device (UD).
  • UD electronic pen sensing device
  • the fingerprint sensor 149 is disposed under the display 180 and may sense a fingerprint through image capture or the like.
  • the electronic pen sensor 146 may be implemented as one device. This may be referred to as an electronic pen sensing device (UDb).
  • UDb electronic pen sensing device
  • the output unit 150 is for outputting an audio signal, a video signal, or an alarm signal.
  • the output unit 150 may include a display 180 , a sound output module 153 , an alarm unit 155 , and a haptic module 157 .
  • the display 180 displays and outputs information processed by the mobile terminal 100 .
  • a user interface (UI) or graphic user interface (GUI) related to a call is displayed.
  • the captured or received images may be displayed individually or simultaneously, and a UI and a GUI may be displayed.
  • the display 180 and the touchpad form a mutually layered structure and are configured as a touch screen
  • the display 180 may also be used as an input device capable of inputting information by a user's touch in addition to an output device.
  • the sound output module 153 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 153 outputs an audio signal related to a function performed in the mobile terminal 100, for example, a call signal reception sound, a message reception sound, and the like.
  • the sound output module 153 may include a speaker, a buzzer, and the like.
  • the alarm unit 155 outputs a signal for notifying the occurrence of an event in the mobile terminal 100 .
  • the alarm unit 155 outputs a signal for notifying the occurrence of an event in a form other than an audio signal or a video signal.
  • the signal may be output in the form of vibration.
  • the haptic module 157 generates various tactile effects that the user can feel.
  • a representative example of the tactile effect generated by the haptic module 157 is a vibration effect.
  • the haptic module 157 When the haptic module 157 generates vibration as a tactile effect, the intensity and pattern of the vibration generated by the haptic module 157 may be converted, and different vibrations may be synthesized and outputted or output sequentially.
  • the memory 160 may store a program for processing and controlling the processor 170, and has a function for temporary storage of input or output data (eg, phonebook, message, still image, video, etc.). can also be done
  • the interface unit 175 functions as an interface with all external devices connected to the mobile terminal 100 .
  • the interface unit 175 may receive data or receive power from an external device and transmit it to each component inside the mobile terminal 100 , and may allow data inside the mobile terminal 100 to be transmitted to an external device.
  • the processor 170 generally controls the overall operation of the mobile terminal 100 by controlling the operation of each unit. For example, it may perform related control and processing for voice calls, data communications, video calls, and the like.
  • the processor 170 may include a multimedia playback module 181 for multimedia playback.
  • the multimedia playback module 181 may be configured as hardware within the processor 170 , or may be configured as software separately from the processor 170 .
  • the processor 170 may include an application processor (not shown) for driving an application. Alternatively, the application processor (not shown) may be provided separately from the processor 170 .
  • the power supply unit 190 may receive external power and internal power under the control of the processor 170 to supply power required for the operation of each component.
  • FIG. 8 is a diagram illustrating an electronic pen sensing device according to an embodiment of the present invention
  • FIGS. 9A to 9C are diagrams referenced in the operation description of FIG. 8 .
  • an electronic pen sensing device UDa includes an electronic pen sensor 148a disposed above or below a display DSG, and an electronic pen sensor 148a. and a processor 1270 that is electrically connected to the , controls to output a driving signal to the electronic pen sensor 148a, and calculates coordinate information of the electronic pen based on the sensing signal sensed by the electronic pen sensor 148a.
  • the electronic pen sensor 148a includes a plurality of loop coils A0 to Mn spaced apart from each other and arranged in a matrix form, and the processor 1270 provides a driving signal to each of the plurality of loop coils A0 to Mn. to output Accordingly, it is possible to sense the position of the electronic pen in the region corresponding to the plurality of loop coils A0 to Mn. In particular, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the plurality of loop coils A0 to Mn are implemented as an island type spaced apart from each other.
  • n+1 loop coils are exemplified in the first horizontal line
  • M+1 loop coils are exemplified in the first vertical line, A0 to Mo.
  • (n+1)*(M+1) loop coils are required, and the processor 1270 uses (n+1)*(M+1) loop coils to sense a plurality of electronic pens.
  • Each of the driving signals may be output to the , and a sensing signal corresponding thereto may be received.
  • the processor 1270 may sequentially output driving signals to the plurality of loop coils A0 to Mn, and calculate coordinate information of the electronic pen based on the sensing signal sensed by the electronic pen sensor 148a. have. Accordingly, coordinate information of the electronic pen can be calculated.
  • 9A illustrates a sensing signal GRa when the electronic pen 400 is positioned at a position Psa of A4 among nine loop coils A0 to A8.
  • the level of the sensing signal GRa may vary according to the position of each loop coil.
  • the sensing signal GRa has the maximum level MXa at the corresponding position, and is spaced apart by 2 left and right from the position Psa of A4. At positions corresponding to positions A2 and A6 that have been obtained, they have the lowest levels Dpaa and DPab, respectively.
  • the processor 1270 may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensed sensing signal. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor 1270 may calculate coordinate information of the electronic pen in response to the position of the maximum level of the sensed sensing signal.
  • the processor 1270 may calculate coordinate information of the electronic pen using both the maximum level and the minimum level of the sensed sensing signal.
  • the processor 1270 calculates a point between the two lowest levels as a maximum level point by using the two lowest levels of the sensed sensing signal, and obtains coordinate information of the electronic pen corresponding to the maximum level position. can be computed. That is, even if the position of the maximum level is not sensed, coordinate information of the electronic pen can be calculated using the two lowest levels.
  • 9B illustrates that the electronic pen is positioned at the position PSb of A0 from A0 to Mo of the first vertical line.
  • the maximum level appears corresponding to the position of A0 among the sensing signals.
  • 9C illustrates that the electronic pen is positioned at a position PSb of 0 among An in A0 of the first horizontal line.
  • the maximum level appears corresponding to the position of A0 among the sensing signals.
  • the processor 1270 may calculate the coordinate information of the electronic pen by using the sensing signal on the horizontal line and the sensing signal on the vertical line as the maximum level point.
  • the processor 1270 may calculate coordinate information of the electronic pen by using the maximum level in the sensing signal on the horizontal line and the maximum level in the sensing signal on the vertical line.
  • the processor 1270 may calculate coordinate information of the electronic pen by using two lowest levels in the sensing signal on the horizontal line and the two lowest levels in the sensing signal on the vertical line.
  • FIG. 10A is a view showing an electronic pen sensing device according to another embodiment of the present invention
  • FIG. 10B is a perspective view of the electronic pen sensing device according to another embodiment of the present invention.
  • an electronic pen sensing device UDb includes an electronic pen sensor 148b disposed above or below a display DSG, and an electronic pen sensor 148b disposed below the display DSG.
  • a heterogeneous sensor 149 may be provided.
  • the electronic pen sensor 148b is disposed under the display DSG.
  • the cover glass CVR is disposed on the display DSG
  • the electronic pen sensor 148b and the heterogeneous sensor 149 are arranged under the display DSG
  • the electronic pen sensor 148b may include a flexible circuit board (FPCB) including a plurality of loop coils and ferrite to sense the electronic pen 400 .
  • FPCB flexible circuit board
  • ferrite may be disposed under the flexible circuit board FPCB.
  • the plurality of loop coils may include a plurality of island type loop coils.
  • the shielding sheet SST may include a shielding material for shielding noise or electromagnetic fields.
  • the heterogeneous sensor 149 may be a fingerprint sensor, and various modifications are possible without being limited thereto.
  • the electronic pen sensor 148b is not disposed in the first area Ara corresponding to the heterogeneous sensor 149 .
  • the electronic pen sensor 148b is disposed in an area other than the first area Ara, and it is preferable that the heterogeneous sensor 149 is disposed in the first area Ara. Accordingly, it is possible to implement the electronic pen sensor and at least one heterogeneous sensor together.
  • 11A to 11D are various examples of cross-sectional views of an electronic pen sensing device according to an embodiment of the present invention.
  • the electronic pen sensing device UDka including the electronic pen sensor 148 and the heterogeneous sensor 149 is disposed under the display DSG.
  • cover glass CVR is disposed on the display DSG, and the shielding sheet SST is disposed under the electronic pen sensor 148 and the heterogeneous sensor 149 .
  • the electronic pen sensor 148 may include a flexible circuit board FPCB including a plurality of loop coils and ferrite disposed under the flexible circuit board FPCB.
  • the heterogeneous sensor 149 may be formed in the first region through the flexible circuit board (FPCB) and ferrite.
  • FPCB flexible circuit board
  • the heterogeneous sensor 149ka penetrates the flexible circuit board FPCB and ferrite, and in particular, is formed to protrude in the direction of the shielding sheet SST. can be
  • the thickness of the heterogeneous sensor 149ka of FIG. 11A is greater than that of the flexible circuit board FPCB and the electronic pen sensor 148 including ferrite.
  • the heterogeneous sensor 149kb penetrates the flexible circuit board FPCB and ferrite, and also penetrates the shielding sheet SST.
  • the thickness of the heterogeneous sensor 149kb of FIG. 11B may be equal to the sum of the thicknesses of the electronic pen sensor 148 and the shielding sheet SST.
  • the heterogeneous sensor 149kc may pass through the flexible circuit board FPCB and ferrite.
  • the thickness of the heterogeneous sensor 149kc of FIG. 11C may be the same as the thickness of the electronic pen sensor 148 .
  • the heterogeneous sensor 149kd penetrates the flexible circuit board FPCB and ferrite, and may protrude toward the display DSG.
  • the thickness of the heterogeneous sensor 149kd of FIG. 11D is greater than that of the flexible circuit board FPCB and the electronic pen sensor 148 including ferrite.
  • FIG. 12 is a diagram illustrating an electronic pen sensing device according to another embodiment of the present invention.
  • an electronic pen sensing device UDb includes an electronic pen sensor 148a disposed above or below a display DSG, and an electronic pen sensor 148a disposed below the display DSG.
  • the heterogeneous sensor 149 and the electronic pen sensor 148a are electrically connected, control to output a driving signal to the electronic pen sensor 148a, and based on the sensing signal sensed by the electronic pen sensor 148a,
  • a processor 1270 for calculating the coordinate information of the pen is included, and the electronic pen sensor 148a includes a plurality of loop coils A0 to Mn spaced apart from each other and disposed in a matrix form, A driving signal is output to each of the plurality of loop coils A0 to Mn, and the electronic pen sensor 148a is not disposed in the first area Ara corresponding to the heterogeneous sensor 149 .
  • the plurality of loop coils A0 to Mn are implemented as an island type spaced apart from each other.
  • n+1 loop coils are exemplified in the first horizontal line
  • M+1 loop coils are exemplified in the first vertical line, A0 to Mo.
  • the heterogeneous sensor 149 may be disposed in the first area Ara instead of the four loop coils.
  • a driving signal may be output to each of the four loop coils, and a sensing signal corresponding thereto may be received.
  • the number of loop coils in the electronic pen sensing device UDb of FIG. 12 may be less by approximately four.
  • the processor 1270 sequentially outputs driving signals to the plurality of loop coils A0 to Mn in the electronic pen sensing device UDb, and based on the sensing signal sensed by the electronic pen sensor 148a, electronic The coordinate information of the pen can be calculated. Accordingly, coordinate information of the electronic pen can be calculated.
  • the processor 1270 may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensing signal sensed by the electronic pen sensing device UDb. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor 1270 calculates a point between the two lowest levels as a maximum level point, and sets the maximum level point. It can be calculated using the coordinate information of the electronic pen. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the electronic pen sensor 148b when the electronic pen sensor 148b cannot detect a sensing signal in the first area Ara, the previously sensed signal is compensated to compensate for the first area Ara or the first area Ara. Coordinate information in the vicinity of the area Ara is calculated. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the heterogeneous sensor area Ara where the electronic pen sensor 148b is not disposed. As a result, the electronic pen sensor 148b and at least one heterogeneous sensor 149 can be implemented together.
  • FIG 13 is an example of an internal block diagram of an electronic pen sensing device according to an embodiment of the present invention.
  • the electronic pen sensing device UD may include an electronic pen sensor 148 , a heterogeneous sensor 149 , a processor 1270 , and an electronic pen sensor driver 1250 . have.
  • the electronic pen sensor 148 includes a plurality of loop coils A0 to Mn spaced apart from each other and disposed in a matrix form, and the loop coil is not disposed in the first area Ara corresponding to the heterogeneous sensor 149 .
  • the electronic pen sensor driving unit 1250 outputs a driving signal to the electronic pen sensor 148 under the control of the processor 1270 , receives the sensing signal sensed by the electronic pen sensor 148 , and sends it to the processor 1270 . can be transmitted
  • the processor 1270 may perform overall operation control of the electronic pen sensing device UD.
  • the processor 1270 is electrically connected to the electronic pen sensor 148 , controls to output a driving signal to the electronic pen sensor 148 , and based on the sensing signal sensed by the electronic pen sensor 148 , the electronic pen Coordinate information of (400) can be calculated.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the first horizontal line among the plurality of loop coils A0 to Mn in the matrix form, and then sequentially applies the driving signal to the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the second horizontal line. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the first horizontal line among the plurality of loop coils A0 to Mn in the matrix form, and then sequentially applies the driving signal to the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the second horizontal line. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 may sequentially apply driving signals to the loop coils in the diagonal direction among the plurality of loop coils A0 to Mn in the matrix form. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 when a sensing signal is sensed in the first region among the sequential driving signal output for the plurality of loop coils A0 to Mn, may control the driving and sensing to be performed for the first region. have. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 during the first period, when a sensing signal is sensed at a first point of a specific horizontal line during driving signal output for a loop coil of a specific horizontal line among the plurality of loop coils A0 to Mn , during the second period after the first period, the driving signal may be output to the vertical line including the first point among the plurality of loop coils A0 to Mn. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 during the first period, when a sensing signal is sensed at a first point of a specific vertical line during driving signal output for a loop coil of a specific vertical line among the plurality of loop coils A0 to Mn , during the second period after the first period, the driving signal may be output to the horizontal line including the first point among the plurality of loop coils A0 to Mn. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the processor 1270 sequentially outputs the first driving signal and the second driving signal to the first region during the first period for sensing the plurality of electronic pens 400a and 400b, and after the first period During the second period of , the third driving signal and the fourth driving signal may be sequentially output to the second region spaced apart from the first region. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1270 sequentially outputs the first driving signal and the second driving signal to the first region during the first period for sensing the plurality of electronic pens 400a and 400b, and outputs the first driving signal and the second driving signal to the first region.
  • a third driving signal and a fourth driving signal may be sequentially output to the second region spaced apart from each other. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1270 performs the first electronic pens 400a and 400b sensing for a first period.
  • the first driving signal and the second driving signal are output to the first region, and the third driving signal and the fourth driving signal are sequentially applied to the second region spaced apart from the first region during the second period after the first period can be printed out. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1270 performs sensing of the plurality of electronic pens 400a and 400b during a first period,
  • the first driving signal and the second driving signal may be sequentially output to the first region, and the third driving signal and the fourth driving signal may be sequentially outputted to the second region spaced apart from the first region. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the processor 1270 may control the frequencies of the first driving signal and the second driving signal to be different from those of the third driving signal and the fourth driving signal. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the processor 1270 outputs the first driving signal of the first frequency and the second driving signal of the first frequency to the first region during the first period to sense the plurality of electronic pens 400a and 400b. and sequentially outputting the third driving signal of the first frequency and the fourth driving signal of the first frequency to the second region spaced apart from the first region during the second period after the first period, and after the second period During the third period of An eighth driving signal may be output. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the processor 1270 obtains first coordinate information of the electronic pen 400 based on the first sensing signal sensed by the electronic pen sensor 148 .
  • calculation when the electronic pen 400 moves from the second area to the first area Ara or near the first area Ara, based on the compensation signal compensating for the first sensing signal, the electronic pen 400 ) of the second coordinate information is calculated. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 is configured to control at least some of the plurality of loop coils A0 to Mn.
  • the sensing signal sensed in may be compensated, and second coordinate information of the electronic pen 400 may be calculated based on the compensated compensation signal. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 may perform compensation using an average value of the levels of the plurality of sensing signals when compensating for the sensing signals sensed by at least some of the plurality of loop coils A0 to Mn. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 sets the weight of the sensing signal to increase as it approaches the first area Ara when compensating for the sensing signal sensed in at least some of the plurality of loop coils A0 to Mn, compensation can be performed. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 controls to output a driving signal of the first frequency F1, and the electronic pen 400 moves the first distance D1.
  • the processor 1270 controls to output a driving signal of the first frequency F1
  • the electronic pen 400 moves the first distance D1.
  • it is located between (D1) and the second distance (D2) it is possible to control to output a driving signal of a second frequency (F2) higher than the first frequency (F1). Accordingly, it is possible to sense the electronic pen 400 while efficiently using power consumption.
  • the processor 1270 drives the third driving frequency F3 higher than the second frequency F2 when the electronic pen 400 is located within the third distance D3 that is closer than the second distance D2. It can be controlled to output a signal. Accordingly, coordinate information of the electronic pen 400 can be accurately calculated.
  • the processor 1270 senses the first direction (x direction) and performs the second direction according to the first direction driving. Sensing is performed in the direction (y direction), and when the electronic pen 400 is located within the third distance D3, sensing in the first direction (x direction) and the second direction according to driving in the second direction (y direction) (y-direction) sensing can be performed. Accordingly, it is possible to detect the electronic pen 400 and accurately calculate coordinate information of the electronic pen 400 .
  • the processor 1270 controls to output the driving signal of the first frequency F1 , and the level of the sensing signal sensed by the electronic pen sensor 148 is the first reference value THD1 and the second reference value THD2 . In this case, it is possible to control to output the driving signal of the second frequency F2 higher than the first frequency F1. Accordingly, it is possible to sense the electronic pen 400 while efficiently using power consumption.
  • the processor 1270 when the level of the sensing signal sensed by the electronic pen sensor 148 is greater than or equal to the third reference value THD3 higher than the second reference value THD2 while outputting the driving signal of the second frequency F2 , the processor 1270 , a driving signal of a third driving frequency F3 higher than the second frequency F2 may be output. Accordingly, coordinate information of the electronic pen 400 can be accurately calculated.
  • the processor 1270 is configured to drive in the first direction (x) in the first direction. direction) sensing and sensing in the second direction (y-direction), and when the level of the sensing signal sensed by the electronic pen sensor 148 is equal to or greater than the third reference value THD3, according to the second-direction (y-direction) driving, A first direction (x direction) sensing and a second direction (y direction) sensing may be performed. Accordingly, it is possible to detect the electronic pen 400 and accurately calculate coordinate information of the electronic pen 400 .
  • 14 to 17 are diagrams referenced in the description of the operation of the electronic pen sensing device of FIG. 13 .
  • FIG. 14 is a diagram illustrating timing diagrams of driving periods Txa to Txn and sensing periods Rxa to Rxn of the electronic pen sensor 148 output from the electronic pen sensor driver 1250 .
  • one frame period may include a driving sensing period Pbst for driving and sensing, and an operation period Prs for calculating coordinate information in the processor 1270 .
  • one frame period may vary according to a distance between the electronic pen 400 and the electronic pen sensing device UD.
  • one frame period may be a period corresponding to the first frequency F1 of 10 Hz.
  • one frame period corresponds to the second frequency F2 of 40 Hz.
  • one frame period is a third driving frequency F3 of 360 Hz. It may be a period corresponding to .
  • the driving sensing section Pbst may include a plurality of burst sections BST1 to BSTn for driving and sensing the plurality of loop coils A0 to Mn.
  • Each burst period BST1 to BSTn may include a driving period Txa to Txn for driving each loop coil A0 to Mn and a sensing period Rxa to Rxn.
  • the processor 1270 calculates a magnitude (amplitude) and a frequency based on the sensed signal sensed in the sensing period Rxa to Rxn during the operation period Prs, and based on the magnitude, the electronic pen 400 . distance can be calculated.
  • the processor 1270 may determine that the distance to the electronic pen 400 is equal to or greater than the first distance D1 when the level of the sensing signal is equal to or less than the first reference value THD1 during the operation period Prs.
  • the processor 1270 determines the distance from the electronic pen 400 to the first distance D1. ) and the second distance D2.
  • the processor 1270 may determine that the distance to the electronic pen 400 is within the third distance D3 when the level of the sensing signal is equal to or less than the third reference value THD3 during the operation period Prs. .
  • the processor 1270 may control to operate in the first mode when the distance from the electronic pen 400 is equal to or greater than the third distance D3.
  • the first mode may be a discovery mode.
  • the processor 1270 controls to operate in the second mode when the distance from the electronic pen 400 is within the third distance D3 and does not come into contact with the display 180 or the electronic pen sensing device UD. can do.
  • the second mode may be a hover mode.
  • the processor 1270 controls to operate in the third mode when the distance to the electronic pen 400 is within the third distance D3 and comes into contact with the display 180 or the electronic pen sensing device UD.
  • the third mode may be a touch mode.
  • the processor 1270 may determine which mode is among the first to third modes, and calculate coordinate information, tilt information, pen pressure information, hover distance information, etc. have.
  • the processor 1270 transmits the calculated mode information, coordinate information, tilt information, pen pressure information, hover distance information, and the like, to the processor 170 of the external device or electronic device 100 during the operation period Prs. can be transmitted
  • the plurality of burst sections BST1 to BSTn may include a driving period and a sensing period, respectively.
  • the plurality of burst sections BST1 to BSTn may include a driving period of one loop coil and a sensing period of five loop coils.
  • the plurality of burst sections may include a driving period of one loop coil and a sensing period of five rope coils.
  • the first burst period BSTk of the n frame period may be a burst period of the loop coil in which the maximum level in the previous frame is sensed.
  • the first burst period BSTk may include a driving period of one loop coil and a sensing period of five loop coils.
  • 16A illustrates sequentially applying a driving signal to a horizontal line among a plurality of loop coils A0 to Mn.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the first horizontal line among the plurality of loop coils A0 to Mn in the matrix form, and then sequentially applies the driving signal to the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the second horizontal line.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the second horizontal line among the plurality of loop coils A0 to Mn in the matrix form, and then sequentially applies the driving signal to the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the third horizontal line. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • 16B illustrates sequentially applying a driving signal to a loop coil in a diagonal direction among a plurality of loop coils A0 to Mn.
  • the processor 1270, Ao, B1, C2, D4, E5, . can be authorized.
  • the processor 1270 may sequentially apply the driving signal to the loop coil in the diagonal direction from H0 again. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • 16C illustrates sequentially applying a driving signal to a vertical line among the plurality of loop coils A0 to Mn.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the first vertical line among the plurality of loop coils A0 to Mn in the matrix form, and then the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the second vertical line.
  • the processor 1270 sequentially applies a driving signal to the loop coil of the second vertical line among the plurality of loop coils A0 to Mn in the matrix form, and then sequentially applies the driving signal to the plurality of loop coils A0 to Mn in the matrix form. ), a driving signal may be sequentially applied to the loop coil of the third vertical line. Accordingly, it is possible to quickly calculate the position of the electronic pen.
  • the driving signal output described with reference to FIGS. 16A to 16C may be performed when a discovery mode for finding a position of the electronic pen is performed.
  • 17A to 17C are diagrams illustrating a sequence for sensing a plurality of electronic pens within one frame.
  • sequences 1 to 4 may be sequentially applied, respectively.
  • sequence 1 to sequence 2 of sequence 1 to sequence 4 is applied to sense the first electronic pen 400a, and sequence 3 to sequence 4 of sequence 1 to sequence 4 is applied to the second electronic pen 400a. ), may be applied.
  • sequence 1 is applied to B2, C2, D2, E2, F2, sequence 2 is applied to D0, D1, D2, D3, D4, and sequence 3 is applied to G4, H4, I4, J4, K4 is applied, and sequence 4 may be applied to I2, I3, I4, I5, and I6.
  • sequence 1 and sequence 3 may be driving signals applied in a vertical direction
  • sequence 2 and sequence 4 may be driving signals applied in a horizontal direction.
  • the vertical sequence 1 and the horizontal sequence 2 may be sequentially applied.
  • sequence 3 in a vertical direction and sequence 4 in a horizontal direction may be sequentially applied.
  • the processor 1720 receives sensing signals corresponding to sequences 1 to 4 sequentially applied, and calculates positions of the plurality of electronic pens based on the received sensing signals. Accordingly, it is possible to quickly sense the positions of the plurality of electronic pens.
  • the processor 1270 performs the sensing of the plurality of electronic pens 400a and 400b in the first area during the first period. , sequentially outputting a first driving signal and a second driving signal, and sequentially outputting a third driving signal and a fourth driving signal to a second region spaced apart from the first region during a second period after the first period can do. Accordingly, it is possible to sense a plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1270 performs the sensing of the plurality of electronic pens 400a and 400b in the first area during the first period.
  • the first driving signal and the second driving signal may be sequentially output, and the third driving signal and the fourth driving signal may be sequentially outputted to the second region spaced apart from the first region. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1720 may sequentially output sequences 1 to 2 and sequentially output sequences 3 to 4 during the first period.
  • the processor 1720 may simultaneously output sequence 1 and sequence 3 during the first period, and thereafter, simultaneously output sequence 2 and sequence 4 . Accordingly, it is possible to quickly sense the positions of the plurality of electronic pens.
  • the processor 1270 when a plurality of electronic pens 400a and 400b are used together, the processor 1270 operates when the first electronic pen 400a and the second electronic pen 400b have the same resonance frequency. , for sensing the plurality of electronic pens 400a and 400b, output the first driving signal and the second driving signal to the first region during the first period, and during the second period after the first period, the first region A third driving signal and a fourth driving signal may be sequentially output to the second region spaced apart from the second region. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b spaced apart from each other.
  • the processor 1270 determines that the first electronic pen 400a and the second electronic pen 400b have different resonance frequencies.
  • the first driving signal and the second driving signal are sequentially outputted to the first region during the first period, and the first driving signal and the second driving signal are sequentially outputted to the second region spaced apart from the first region.
  • the third driving signal and the fourth driving signal may be sequentially output. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the processor 1270 may control the frequencies of the first driving signal and the second driving signal to be different from those of the third driving signal and the fourth driving signal. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • the processor 1720 sequentially outputs the first frequency-based sequence 1 to sequence 2 during the first period, and sequentially outputs the second frequency-based sequence 3 to sequence 4 during the first period. can be output as
  • the processor 1720 simultaneously outputs the first frequency-based sequence 1 and the second frequency-based sequence 3 during the first period, and thereafter, the first frequency-based sequence 2 and the second frequency-based sequence Sequence 4 can be output at the same time. Accordingly, it is possible to quickly sense the positions of the plurality of electronic pens.
  • the processor 1270 performs the sensing of the plurality of electronic pens 400a and 400b in the first area during the first period. , outputting a first driving signal of a first frequency and a second driving signal of a first frequency, and in a second region spaced apart from the first region during a second period after the first period, a third driving of the first frequency
  • the signal and the fourth driving signal of the first frequency are sequentially output, and during the third period after the second period, the fifth driving signal of the first frequency and the sixth driving signal of the first frequency are output to the first region and output the seventh driving signal of the second frequency and the eighth driving signal of the second frequency to the second region. Accordingly, it is possible to sense the plurality of electronic pens 400a and 400b.
  • 18A to 18D are diagrams illustrating output of various driving signals for sensing a plurality of electronic pens.
  • the processor 1270 sets the horizontal line of A0, the horizontal line of B0, the horizontal line of C0, the horizontal line of D0, and the horizontal line of E0. It is possible to output the driving signal sequentially in order.
  • the processor 1270 may receive a sensing signal corresponding to each driving signal, and calculate coordinate information of the first electronic pen 400a based on the received sensing signal.
  • the processor 1270 may control to sequentially output sequence 1 in a vertical direction and sequence 2 in a horizontal direction.
  • sequence 1 may be applied to B2, C2, D2, E2, and F2, and sequence 2 may be applied to D0, D1, D2, D3, and D4.
  • the processor 1270 may receive a sensing signal corresponding to each driving signal, and calculate coordinate information of the first electronic pen 400a based on the received sensing signal.
  • the processor 1270 performs the vertical sequence 1 and the horizontal sequence sequence.
  • the driving signal may be sequentially output in the order of the horizontal line of H0, the horizontal line of I0, the horizontal line of J0, the horizontal line of K0, and the horizontal line of M0.
  • the processor 1270 receives a sensing signal corresponding to each driving signal, and calculates coordinate information of the first electronic pen 400a and the second electronic pen 400b, respectively, based on the received sensing signal. can do.
  • the processor 1270 when the second electronic pen 400b is positioned at the J4 position while the first electronic pen 400a is positioned at the C2 position, the processor 1270 performs the vertical sequence 1 and the horizontal sequence sequence. After sequential application of 2, the processor 1270 may control so that sequence 3 in the vertical direction and sequence 4 in the horizontal direction are sequentially output.
  • sequence 3 may be applied to G4, H4, I4, J4, and K4, and sequence 4 may be applied to I2, I3, I4, I5, and I6.
  • the processor 1270 receives a sensing signal corresponding to each driving signal, and calculates coordinate information of the first electronic pen 400a and the second electronic pen 400b, respectively, based on the received sensing signal. can do.
  • 19 is a flowchart illustrating a method of operating an electronic pen sensing device according to an embodiment of the present invention.
  • the processor 1270 controls to output a driving signal to the electronic pen sensor 148 during the driving period (S1810). Accordingly, the electronic pen sensor driver 1250 outputs a driving signal to the electronic pen sensor 148 .
  • the electronic pen sensor 148 receives a sensing signal during the sensing period (S1812). Then, the received sensing signal is transmitted to the processor 1270 .
  • the processor 1270 may determine whether it is a fingerprint sensor area based on the sensing signal (S1815), and if it is not the fingerprint sensor area, calculate coordinate information based on the sensing signal (S1830).
  • step 1815 in the case of the fingerprint sensor area, the processor 1270 may compensate the sensing signal ( S1822 ) and calculate coordinate information based on the compensation signal ( S1825 ).
  • 20A to 20D are diagrams illustrating sensing signals and compensation signals when the position of the electronic pen 400 is outside the first area and then moves into the first area.
  • FIG. 20A illustrates that the electronic pen 400 moves from the position P1a, moves downward, passes the position Paa, and moves to P2a in the first area Ara where the heterogeneous sensor 149 is disposed.
  • the level of the loop coil of E3 among the sensing signals Sgp1a may appear the greatest.
  • the level of the sensing signal Sgp1b may be zero (0) as shown in FIG. 20C . That is, sensing may not be performed.
  • the processor 1270 may generate the compensation signal Sgp1b' as shown in FIG. 20D by using the sensing signal Sgp1a of FIG. 20B and the like.
  • the processor 1270 may generate the compensation signal Sgp1b' having the largest level of the loop coil of E3, similar to the sensing signal Sgp1a of FIG. 20B .
  • the processor 1270 can calculate the coordinate information even when the electronic pen 400 is located in the first area.
  • 21A to 21D are diagrams illustrating sensing signals and compensation signals when the position of the electronic pen 400 is outside the first area and then moves to the vicinity of the first area.
  • 21A illustrates that the electronic pen 400 moves from the position P1, moves downward, passes the position Pa, and moves to P2 near the first area Ara in which the heterogeneous sensor 149 is disposed.
  • 21B illustrates a plurality of sensing signals Sgp1 to Sgp2 when the electronic pen 400 moves from the position P1 to P2.
  • Sgp1 corresponds to a sensing signal when the electronic pen 400 is in the P1 position
  • Sgpa corresponds to a sensing signal when the electronic pen 400 is in the Pa position
  • Sgp2 is an electronic
  • the pen 400 may correspond to a sensing signal when the pen 400 is in the P2 position.
  • 21C illustrates a sensing signal Sgp1 when the electronic pen 400 is in the P1 position and a sensing signal Sgp2 when the electronic pen 400 is in the P2 position.
  • the sensing signal Sgp2 when the electronic pen 400 is positioned at the P2 position may not be accurately sensed by the first area Ara in which the heterogeneous sensor 149 is disposed.
  • the level of the loop coil of G1 should be the largest in the case of the sensing signal Sgp2.
  • an error may occur when the electronic pen 400 is positioned in an edge region other than the center region of the loop coil.
  • the processor 1270 detects the electronic pen 400 in the vicinity of the first area Ara in which the heterogeneous sensor 149 is disposed as well as in the first area Ara in which the heterogeneous sensor 149 is disposed. If located, it is desirable to compensate for the sensing signal.
  • the processor 1270 may generate a compensation signal such as Sgpca of FIG. 21D by using the sequentially sensed sensing signals.
  • the compensation signal Sgpca in the drawing is a compensation signal when the electronic pen 400 is in the P2 position, and the level is greatest in the loop coil of G1 instead of the loop coil of F1.
  • the processor 1270 may calculate accurate coordinate information based on the compensation signal Sgpca.
  • the processor 1270 cannot perform signal compensation.
  • the processor 1270 performs signal compensation when there is no existing sensing signal. can't do it
  • a guide message 2010 for guiding the movement of the electronic pen 400 is output.
  • the guide message 2010 is output to the display 180 of the electronic device 100, however, it is also possible to output the guide message 2010 as a sound or the like.
  • FIG. 23 is a view showing an electronic pen sensing device according to another embodiment of the present invention
  • FIG. 24 is a perspective view of the electronic pen sensing device according to another embodiment of the present invention.
  • an electronic pen sensing device includes an electronic pen sensor 148a disposed above or below a display DSG, and an electronic pen sensor 148a disposed below the display DSG. It includes a heterogeneous sensor 149 that is used, and a second heterogeneous sensor 195m disposed below the display DSG.
  • the electronic pen sensor 148a is disposed under the display DSG.
  • FIG. 24 shows a cover glass CVR disposed above the display DSG, an electronic pen sensor 148a, a heterogeneous sensor 149, and a second heterogeneous sensor 195m are disposed below the display DSG, and the electronic It is exemplified that the shielding sheet SST is disposed under the pen sensor 148a and the heterogeneous sensor 149 .
  • the heterogeneous sensor 149 may be a fingerprint sensor
  • the second heterogeneous sensor 195m may be a camera, but is not limited thereto and various modifications are possible.
  • a first region Ara corresponding to the heterogeneous sensor 149 and a second region corresponding to the second heterogeneous sensor 195m ( It is preferable that the electronic pen sensor 148a is not disposed on the Arb).
  • the electronic pen sensor 148a is disposed in an area other than the first area Ara and the second area Arb, and the heterogeneous sensor 149 is disposed in the first area Ara, and the It is preferable that the second heterogeneous sensor 195m is disposed in the second region Arb. Accordingly, it is possible to implement the electronic pen sensor and at least one heterogeneous sensor together.
  • 25 is a diagram illustrating an electronic pen sensing device according to another embodiment of the present invention.
  • an electronic pen sensing device UDd includes an electronic pen sensor 148a disposed above or below a display DSG, and an electronic pen sensor 148a disposed below the display DSG.
  • the heterogeneous sensor 149, the second heterogeneous sensor 195m disposed below the display DSG, and the electronic pen sensor 148a are electrically connected, and are controlled to output a driving signal to the electronic pen sensor 148a and a processor 1270 for calculating coordinate information of the electronic pen based on the sensing signal sensed by the electronic pen sensor 148a, wherein the electronic pen sensor 148a includes a plurality of electronic pen sensors spaced apart from each other and arranged in a matrix form.
  • the processor 1270 outputs a driving signal to each of the plurality of loop coils A0 to Mn, and in a first region corresponding to the heterogeneous sensor 149, the loop coil is not disposed, and a loop coil is not disposed in the second area corresponding to the second heterogeneous sensor 195m.
  • the electronic pen sensor 148a, the heterogeneous sensor 149, and the second heterogeneous sensor 195m can be implemented together.
  • the plurality of loop coils A0 to Mn are implemented as an island type spaced apart from each other.
  • n+1 loop coils are exemplified in the first horizontal line
  • M+1 loop coils are exemplified in the first vertical line, A0 to Mo.
  • the heterogeneous sensor 149 may be disposed in the first area Ara instead of the four loop coils, and the second heterogeneous sensor 195m may be disposed in the second area instead of the two loop coils. .
  • (n+1)*(M+1)-6 loop coils are required, and the processor 1270 performs (n+1)*(M+1) ⁇ for sensing a plurality of electronic pens.
  • a driving signal may be output to each of the four loop coils, and a sensing signal corresponding thereto may be received.
  • the number of loop coils in the electronic pen sensing device UDd of FIG. 24 may be less by approximately six.
  • the processor 1270 sequentially outputs driving signals to the plurality of loop coils A0 to Mn in the electronic pen sensing device UDd, and based on the sensing signal sensed by the electronic pen sensor 148a, electronic The coordinate information of the pen can be calculated. Accordingly, coordinate information of the electronic pen can be calculated.
  • the processor 1270 may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensing signal sensed by the electronic pen sensing device UDd. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor 1270 calculates a point between the two lowest levels as a maximum level point, and sets the maximum level point. It can be calculated using the coordinate information of the electronic pen. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • 26A and 26B illustrate output of a driving signal to a loop coil of a vertical line in the electronic pen sensing device UDd.
  • FIG. 26A illustrates that a driving signal is applied to the A1 vertical line
  • FIG. 26B illustrates that the driving signal is applied to the A2 vertical line.
  • the B2 loop coil is not disposed, and the G2 loop coil and the H2 loop coil are not disposed. Accordingly, the driving signal is applied to the loop coil except for the corresponding region.
  • 27A illustrates that the electronic pen 400 is positioned at a position of the D3 loop coil capable of being sensed by the electronic pen sensing device UDd.
  • the processor 1720 may apply the driving signal to the vertical line including the D3 loop coil position and then apply the driving signal to the horizontal line including the D3 loop coil position. Accordingly, it is possible to accurately calculate coordinate information of the electronic pen 400 based on the sensing signal corresponding to the driving signal.
  • the processor 1720 may apply the driving signal to a horizontal line including the D3 loop coil position and then apply the driving signal to a vertical line including the D3 loop coil position. Accordingly, it is possible to accurately calculate coordinate information of the electronic pen 400 based on the sensing signal corresponding to the driving signal.
  • the processor 1720 may receive the sensing signal CVaa as shown in FIG. 27D .
  • the processor 1720 may calculate coordinate information of the electronic pen 400 based on the maximum level MXma in the sensing signal CVaa as shown in FIG. 27D .
  • the processor 1720 in the sensing signal CVaa as shown in FIG. 27D , based on the two lowest levels DPpa and DPmb, the maximum level MXma, which is a point between the two lowest levels DPpa and DPmb. , and based on the maximum level MXma, coordinate information of the electronic pen 400 may be calculated.
  • 27B and 27C illustrate that the electronic pen 400 is positioned in a region of the heterogeneous sensor 149 that cannot be sensed by the electronic pen sensing device UDd.
  • FIG. 27B illustrates that the electronic pen 400 is positioned at the PSDa position within the heterogeneous sensor 149 area, and in the case of FIG. 27C , the electronic pen 400 is positioned at the PSDb position within the heterogeneous sensor 149 area. .
  • the processor 1720 in the sensing signal CVab as shown in FIG. 27E, based on the two lowest levels DPna and DPnb, the maximum level MXna, which is a point between the two lowest levels DPna and DPnb. , and based on the maximum level MXna, coordinate information of the electronic pen 400 may be calculated. Accordingly, coordinate information of the electronic pen 400 at the PSDa position of FIG. 27B can be calculated.
  • the processor 1720 in the sensing signal CVaa as shown in FIG. 27F, based on the two lowest levels DPoa and DPob, the maximum level MXoa, which is a point between the two lowest levels DPoa and DPob. , and based on the maximum level MXoa, coordinate information of the electronic pen 400 may be calculated. Accordingly, coordinate information of the electronic pen 400 at the PSDb position of FIG. 27C can be calculated.
  • 28A illustrates a sensing signal GRa when the electronic pen 400 is positioned at a position Psa of A9 among 12 loop coils A0 to A11.
  • the level of the sensing signal CVp may vary according to the position of each loop coil.
  • the sensing signal CVp has the maximum level MXpa at the corresponding position, and is spaced apart by 2 left and right from the position Psa of A9.
  • the lowest levels Dppa and DPpb are respectively.
  • the processor 1270 may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensed sensing signal. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • the processor 1270 may calculate coordinate information of the electronic pen in response to the position of the maximum level of the sensed sensing signal.
  • the processor 1270 may calculate coordinate information of the electronic pen using both the maximum level and the minimum level of the sensed sensing signal.
  • the processor 1270 calculates a point between the two lowest levels as a maximum level point by using the two lowest levels of the sensed sensing signal, and obtains coordinate information of the electronic pen corresponding to the maximum level position. can be computed. That is, even if the position of the maximum level is not sensed, coordinate information of the electronic pen can be calculated using the two lowest levels.
  • 28B illustrates a sensing signal GRa when the electronic pen 400 is positioned at a position Psb of A6 among 12 loop coils A0 to A11.
  • the level of the sensing signal CVpb may vary according to the position of each loop coil.
  • the sensing signal CVpb has the maximum level MXqa at the corresponding position, and is spaced apart by 2 left and right from the position Psb of A6. At positions corresponding to the positions A4 and A8, they have the lowest levels Dpqa and DPqb, respectively.
  • the processor 1270 may calculate coordinate information of the electronic pen based on the maximum level and the minimum level of the sensed sensing signal. Accordingly, it is possible to easily calculate the coordinate information of the electronic pen.
  • 29 illustrates a plurality of sensing signals SCVa to SCVe.
  • the first to third sensing signals SCVa to SCVc are sensing signals sensed in the center region of the loop coil and may be normal sensing signals.
  • a normal sensing signal like the first to third sensing signals SCVa to SCVc has a maximum level point MAx, a left lower level level (let dip) (LDa), and a right lower level level (right dip) (Rda).
  • MAx maximum level point
  • LDa left lower level level
  • RVa right lower level level
  • the maximum level point MAx and a left lowest level (let dip) LDa or a right lowest level (Rda) may be spaced apart from each other by a predetermined interval.
  • the processor 1270 When compensating the sensing signal, the processor 1270 performs compensation using the interval between the maximum level point MAx and the left lowest level LDa or the right lowest level Rda.
  • the fourth to fifth sensing signals SCVd to SCVe are sensing signals sensed in the edge region of the loop coil, and may be abnormal sensing signals.
  • Abnormal sensing signals such as the fourth to fifth sensing signals SCVd to SCVe may have a low level, a maximum level point MAx, and an interval between the left lowest level and the like may appear irregularly.
  • the processor 1270 may compensate the fourth to fifth sensing signals SCVd to SCVe by using the existing sensing signal.
  • the processor 1270 may perform compensation by using an average value of the levels of the plurality of sensing signals when compensating for the sensing signals sensed by at least some of the plurality of loop coils. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 sets the weight of the sensing signal to increase as it approaches the first area Ara when compensating for the sensing signal sensed in at least some of the plurality of loop coils A0 to Mn. , can be compensated. Accordingly, coordinate information of the electronic pen 400 can be calculated even in the area of the heterogeneous sensor 149 where the electronic pen sensor 148 is not disposed.
  • the processor 1270 uses the ratio of the maximum level point (MAx) in the existing sensing signal to the left lowest level (let dip) (LDa) or the right lowest level (Rda), The maximum level of the fourth to fifth sensing signals SCVd to SCVe may be compensated.
  • the processor 1270 may use a ratio of the maximum level point MAx in the existing sensing signal to a left lowest level (let dip) (LDa) or a right lowest level (Rda) in the fourth sense signal.
  • a left lowest level (let dip) and a right lowest level (right dip) of the to fifth sensing signals SCVd to SCVe may be compensated.
  • FIG. 30 is a diagram illustrating a mode change according to a distance between the electronic pen sensing device UD and the electronic pen 400 .
  • the processor 1270 controls to output a driving signal of a first frequency F1 when the electronic pen 400 is at a position greater than or equal to a first distance D1, and the electronic pen 400 is When it is located between the first distance D1 and the second distance D2, it is possible to control to output a driving signal having a second frequency F2 higher than the first frequency F1. Accordingly, it is possible to sense the electronic pen 400 while efficiently using power consumption.
  • the processor 1270 drives the third driving frequency F3 higher than the second frequency F2 when the electronic pen 400 is located within the third distance D3 that is closer than the second distance D2. It can be controlled to output a signal. Accordingly, coordinate information of the electronic pen 400 can be accurately calculated.
  • the processor 1270 sequentially applies driving signals to the plurality of loop coils A0 to Mn. and, based on the sensing signal corresponding to the driving signal, coordinate information of the electronic pen 400 may be calculated. Accordingly, it is possible to detect the electronic pen 400 and accurately calculate coordinate information of the electronic pen 400 .
  • the processor 1270 may control to operate in the first mode when the distance from the electronic pen 400 is equal to or greater than the third distance D3 .
  • the first mode may be a discovery mode.
  • the processor 1270 controls to operate in the second mode when the distance from the electronic pen 400 is within the third distance D3 and does not come into contact with the display 180 or the electronic pen sensing device UD. can do.
  • the second mode may be a hover mode.
  • the processor 1270 controls to operate in the third mode when the distance to the electronic pen 400 is within the third distance D3 and comes into contact with the display 180 or the electronic pen sensing device UD.
  • the third mode may be a touch mode.
  • the processor 1270 may control to output a driving signal having a third driving frequency F3 higher than the second frequency F2 .
  • the processor 1270 may calculate coordinate information, tilt information, and pen pressure information.
  • the processor 1270 may calculate hover distance information and coordinate information.
  • the processor 1270 may calculate distance information.
  • a driving signal may be applied to some of the plurality of loop coils A0 to Mn, and in the second mode and the third mode, a driving signal may be applied to more loop coils.
  • FIG. 31 is a flowchart illustrating another example of an operating method of an electronic pen sensing device according to an embodiment of the present invention
  • FIG. 32 is a diagram referenced in the description of the operating method of FIG. 31 .
  • the processor 1270 performs driving and sensing at a first frequency F1 (S2605).
  • driving and sensing are performed by the first frequency F1 corresponding to the first driving period T1 .
  • the processor 1270 is driven at a second frequency F2 higher than the first frequency F1 when a sensing signal greater than or equal to the first reference value THD1 is received (S2610) while operating at the first frequency F1, and Sensing is performed (S2615).
  • the level of the sensing signal sensed by the electronic pen sensor 148 is between the first reference value THD1 and the second reference value THD2 while the processor 1270 is operating at the first frequency F1
  • driving and sensing are performed by the second frequency F2 corresponding to the second driving period T2 smaller than the first driving period T1 .
  • the processor 1270 senses the first direction and senses the second direction according to the first direction driving. to perform (S2625).
  • the level of the sensing signal sensed by the electronic pen sensor 148 is between the second reference value THD2 and the third reference value THD3 while the processor 1270 is operating at the second frequency F2
  • the first direction sensing and the second direction sensing are performed according to the first direction driving.
  • vertical direction sensing and horizontal direction sensing may be performed.
  • the processor 1270 operates at the second frequency F2 , and a third driving frequency F3 higher than the second frequency F2 is performed. to perform driving and sensing (S2635).
  • the processor 1270 while the driving signal of the second frequency F2 is output, the level of the sensing signal sensed by the electronic pen sensor 148 is greater than or equal to the third reference value THD3 higher than the second reference value THD2. In this case, it is possible to control to output a driving signal having a third driving frequency F3 higher than the second frequency F2 .
  • driving and sensing are performed by the third driving frequency F3 corresponding to the third driving period T3 smaller than the second driving period T2 .
  • the processor 1270 may perform vertical sensing and horizontal sensing according to the horizontal driving. Accordingly, coordinate information of the electronic pen 400 can be accurately calculated.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne un dispositif de détection de stylo électronique et un appareil électronique le comprenant. Le dispositif de détection de stylo électronique selon un mode de réalisation de la présente invention comprend : un capteur de stylo électronique disposé sur la partie supérieure ou la partie inférieure d'un écran ; et un processeur qui est électriquement connecté au capteur de stylo électronique, commande pour émettre un signal de commande au capteur de stylo électronique, et calcule des informations de coordonnées d'un stylo électronique sur la base d'un signal de détection détecté par le capteur de stylo électronique, le capteur de stylo électronique comprenant une pluralité de bobines en boucle espacées les unes des autres et agencées dans un format de matrice, et le processeur émet le signal de commande à chacune de la pluralité de bobines en boucle. Par conséquent, la présente invention peut détecter une pluralité de stylos électroniques.
PCT/KR2020/002282 2020-02-18 2020-02-18 Dispositif de détection de stylo électronique et appareil électronique le comprenant WO2021167117A1 (fr)

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PCT/KR2020/002282 WO2021167117A1 (fr) 2020-02-18 2020-02-18 Dispositif de détection de stylo électronique et appareil électronique le comprenant

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015079282A (ja) * 2013-10-15 2015-04-23 レノボ・シンガポール・プライベート・リミテッド 電磁誘導式のセンサー・パネル、および指示誤差を低減する方法
KR20160088137A (ko) * 2015-01-15 2016-07-25 삼성전자주식회사 터치 패널 및 이를 구비한 좌표 측정 시스템
KR20160088655A (ko) * 2015-01-16 2016-07-26 삼성전자주식회사 스타일러스 펜, 터치 패널 및 이들을 구비한 좌표 측정 시스템
US20180150439A1 (en) * 2015-08-04 2018-05-31 Wacom Co., Ltd. Handwritten data capture method and handwritten data capture device
KR20190000522A (ko) * 2017-06-23 2019-01-03 삼성전자주식회사 복수의 전극을 연결하는 도전성 배선 및 노이즈 신호를 차폐하기 위한 도전 영역을 포함하는 도전층이 형성된 터치 패널 및 그것을 포함하는 전자 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015079282A (ja) * 2013-10-15 2015-04-23 レノボ・シンガポール・プライベート・リミテッド 電磁誘導式のセンサー・パネル、および指示誤差を低減する方法
KR20160088137A (ko) * 2015-01-15 2016-07-25 삼성전자주식회사 터치 패널 및 이를 구비한 좌표 측정 시스템
KR20160088655A (ko) * 2015-01-16 2016-07-26 삼성전자주식회사 스타일러스 펜, 터치 패널 및 이들을 구비한 좌표 측정 시스템
US20180150439A1 (en) * 2015-08-04 2018-05-31 Wacom Co., Ltd. Handwritten data capture method and handwritten data capture device
KR20190000522A (ko) * 2017-06-23 2019-01-03 삼성전자주식회사 복수의 전극을 연결하는 도전성 배선 및 노이즈 신호를 차폐하기 위한 도전 영역을 포함하는 도전층이 형성된 터치 패널 및 그것을 포함하는 전자 장치

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