WO2021002123A1 - 端末装置および位置検出センサ - Google Patents

端末装置および位置検出センサ Download PDF

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Publication number
WO2021002123A1
WO2021002123A1 PCT/JP2020/020818 JP2020020818W WO2021002123A1 WO 2021002123 A1 WO2021002123 A1 WO 2021002123A1 JP 2020020818 W JP2020020818 W JP 2020020818W WO 2021002123 A1 WO2021002123 A1 WO 2021002123A1
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WO
WIPO (PCT)
Prior art keywords
position detection
detection sensor
loop coil
electrodes
terminal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/020818
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English (en)
French (fr)
Japanese (ja)
Inventor
大介 渡邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacom Co Ltd
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Wacom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacom Co Ltd filed Critical Wacom Co Ltd
Priority to JP2021529922A priority Critical patent/JPWO2021002123A1/ja
Priority to CN202080045856.4A priority patent/CN114008572B/zh
Publication of WO2021002123A1 publication Critical patent/WO2021002123A1/ja
Priority to US17/523,885 priority patent/US11868579B2/en
Anticipated expiration legal-status Critical
Priority to US18/523,507 priority patent/US12141411B2/en
Priority to US18/912,180 priority patent/US12596462B2/en
Priority to JP2024204584A priority patent/JP7826431B2/ja
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving

Definitions

  • the present invention relates to, for example, a terminal device including a thin display device and a position detection sensor that receives an input operation using a pen-type position indicator called an electronic pen, and the terminal device. Regarding the mounted position detection sensor.
  • High-performance mobile phone terminals called smartphones and terminal devices such as tablet PCs (Personal Computers) are equipped with touch sensors to enable touch operations with the user's fingers.
  • the touch sensor is composed of transparent electrodes and is arranged on the display screen of a display device such as an LCD (Liquid Crystal Display), for example.
  • the touch sensor and the display device form a touch panel as an input device.
  • a terminal device capable of inputting instructions using an electronic pen (pen-type position indicator).
  • a capacitance method and an electromagnetic induction method as a method of a position detection device capable of inputting an instruction using an electronic pen.
  • the capacitance method is also used in the touch sensor described above, and includes a sensor unit in which a plurality of linear conductors (line electrodes) are arranged in each of the X-axis direction and the Y-axis direction.
  • Capacitive electronic pens are also called electrostatic pens, and are simply conductive pen-type position indicators or battery-powered so-called active position indicators that send signals from the oscillation circuit.
  • An example of an input device (position detection device) including a capacitance type coordinate detection sensor and an electronic pen is disclosed in Patent Document 1 described later.
  • the electromagnetic induction method includes a sensor unit in which a plurality of loop coils are arranged in each of the X-axis direction and the Y-axis direction. It has a configuration in which a transmission period in which a current is sequentially supplied to a plurality of loop coils of the sensor unit to generate a magnetic field and a reception period in which the supply of the current is stopped and a magnetic field from the outside is received are alternately provided.
  • the corresponding electronic pen is provided with a resonance circuit composed of a coil and a capacitor, generates a signal by flowing a current through the coil in response to a magnetic field from the sensor unit, and transmits the signal including this signal to the sensor unit. .. This is received through the sensor unit during the reception period, and the indicated position by the electronic pen is detected.
  • An example of an input device including an electromagnetic induction type coordinate detection sensor and an electronic pen is disclosed in Patent Document 2 described later.
  • the display device used for the terminal device the above-mentioned LCD is often used, or an organic EL (electro-luminescence) display is often used.
  • organic EL electro-luminescence
  • electronic paper which is thin, light, and capable of displaying clear images, has been used as a display device.
  • Electronic paper is expected to be widely used in the future, such as being used as a display device for various terminal devices.
  • Various improvements have also been made to the electronic paper, and one example thereof is disclosed in Patent Documents 3 and 4 described later.
  • a capacitive touch sensor and electromagnetic induction are used. It is equipped with both an induction type position detection sensor.
  • FIG. 5A in a conventional terminal device, a capacitance type touch sensor 500 is arranged above the display device 600, and an electromagnetic induction type is placed below the display device 600.
  • a laminated structure in which the position detection sensor 700 of the above is arranged is adopted.
  • the input device is not equipped with a capacitance type touch sensor, but is equipped with only an electromagnetic induction type position detection sensor. That is, as shown in FIG. 5B, a terminal device in which the electronic paper 600E is used as the display device and the position detection sensor 700 of the electromagnetic induction method is arranged below the electronic paper 600E can be considered. In this case, the operation surface is on the display screen of the electronic paper 600E, and the electronic pen is brought into contact with the display screen of the electronic paper 600E to input instructions.
  • the electromagnetic induction type position detection sensor is a group of a plurality of loop coils formed of conductive wires on a predetermined substrate 702 such as a rigid substrate or a flexible substrate. It is formed by stacking 701 and 703. Electronic paper is much thinner than LCDs and organic EL displays. In this case, it is considered that drawing input is performed by bringing the electronic pen 200 into contact with the electronic paper 600E and moving it. As shown in FIG. 5B, the electronic paper 600E is thin and flexible. Therefore, when the electronic pen 200 is moved on the electronic paper 600E, the loop coil is present and absent. , The pen tip of the electronic pen 200 will move up and down.
  • the distance between the pen tip of the electronic pen 200 and the sensor surface of the electromagnetic induction type position detection sensor 700 fluctuates.
  • the level of the signal from the electronic pen 200 received by each loop coil of the loop coil group 701 constituting the position detection sensor 700 also fluctuates. Therefore, as shown in FIG. 5C, there is a possibility that a so-called waving phenomenon may occur in which the locus input by the electronic pen 200 is displayed as a wave when displayed on the electronic paper 600E. is there. In this case, the quality of the drawing input by the electronic pen 200 is deteriorated, and a mobile terminal capable of drawing input with high quality cannot be realized.
  • the present invention makes it possible to perform drawing input with an electronic pen with high quality even when an extremely thin and flexible display device such as electronic paper is used.
  • the purpose is to.
  • a terminal device including an electronic paper and a position detection sensor that is arranged below the display screen of the electronic paper and detects an indicated position on the display screen by an electronic pen.
  • the position detection sensor is A plurality of first electrodes are arranged in the first direction with respect to the first surface of the insulating substrate on the display screen side.
  • the first electrode which is between a plurality of the first electrodes arranged in the first direction with respect to the first surface of the insulating substrate and has a predetermined distance in the first direction.
  • a terminal device characterized in that one or more first wire rods stretched in a direction along the first electrode are arranged between the electrodes.
  • an electronic paper and a position detection sensor arranged on the lower side of the display screen of the electronic paper are provided.
  • a plurality of first electrodes are arranged in the first direction with respect to the first surface of the insulating substrate on the display screen side.
  • the first electrodes having a predetermined distance in the first direction among the plurality of the first electrodes arranged in the first direction with respect to the first surface of the insulating substrate.
  • one or more first wire rods stretched in the direction along the first electrode are arranged.
  • FIG. 1 is a diagram for explaining a configuration example of the terminal device of this embodiment.
  • an electronic paper 2 as a display device is located above the position detection sensor 1
  • a motherboard 3 is located below the position detection sensor 1.
  • the motherboard 3 ⁇ the position detection sensor 1 ⁇ the electronic paper 2 are stacked in this order from the bottom, these are housed in the housing 4A and enclosed by the front panel 4B from the top, and the terminal of this embodiment.
  • the device is configured.
  • Electronic paper 2 means all display media that maintain visibility and portability, which are the advantages of paper, and whose display contents can be electrically rewritten.
  • There are various display methods for electronic paper such as an electrophoresis method and an electronic powder / granular material method, but they are thinner and cheaper than LCDs and organic EL displays.
  • the motherboard 3 is a so-called printed circuit board provided with a position detection circuit to which the position detection sensor 1 is connected, a power supply circuit, a control circuit, a display circuit for electronic paper 2, an interface circuit with an external device, and the like.
  • the position detection sensor 1 is of the electromagnetic induction type and is connected to the position detection circuit formed on the motherboard 3.
  • the position detection device is configured by the position detection sensor 1 and the position detection circuit of the motherboard 3.
  • the position detection sensor 1 corresponds to the entire surface of the display screen of the electronic paper 2, so that the indicated position can be detected regardless of the position on the display screen of the electronic paper 2 indicated by the electronic pen. It has become.
  • drawing input can be performed by touching and moving the electronic pen on the display screen of the electronic paper 2.
  • the terminal device of this embodiment is configured by providing the electronic paper 2 as a display device and providing the position detection sensor 1 of the electromagnetic induction type under the electronic paper 2.
  • the electronic pen is brought into direct contact with the display screen of the electronic paper 2 to input various instructions. That is, in the electronic device of this embodiment, the main input device other than the operation buttons such as the power supply is provided only with the position detection device of the electromagnetic induction type.
  • FIG. 2 is a diagram for explaining a configuration example of the position detection device 100 composed of the position detection sensor 1 and the position detection circuit 102 and a configuration example of the electronic pen 200.
  • the position detection device 100 and the electronic pen 200 of this embodiment are of the electromagnetic induction type.
  • the electronic pen 200 is formed by connecting a coil L for signal transmission / reception, a pen pressure detection unit Cv which is a variable capacitance capacitor, a resonance capacitor Cf, and the like in parallel. It includes a configured resonance circuit.
  • the position detection device 100 includes a position detection sensor 1 formed by stacking an X-axis direction loop coil group 12X and a Y-axis direction loop coil group 12Y.
  • the loop coils X1, X2, ..., X40 of the X-axis direction loop coil group 12X and the loop coils Y1, Y2, ..., Y30 of the Y-axis direction loop coil group 12Y may have one turn or two or more turns, respectively. It may be multiple turns.
  • the position detection sensor 1 is shown in a simplified manner, and the detailed configuration of the position detection sensor 1 will be described later. By connecting the position detection sensor 1 to the position detection circuit 102, the position detection device 100 is configured as a whole.
  • the position detection circuit 102 is formed on the motherboard 3.
  • the position detection circuit 102 includes an oscillator 104, a current driver 105, a selection circuit 106, a switching connection circuit 107, a receiving amplifier 108, a position detection circuit 109, a pen pressure detection circuit 110, and a processing control unit 111. And.
  • the X-axis direction loop coil group 12X and the Y-axis direction loop coil group 12Y of the position detection sensor 1 are connected to the selection circuit 106.
  • the selection circuit 106 sequentially selects one of the two loop coil groups 12X and 12Y according to the control of the processing control unit 111.
  • the processing control unit 111 is composed of a microprocessor.
  • the processing control unit 111 controls the selection of the loop coil in the selection circuit 106 and the switching of the switching connection circuit 107, and also controls the processing timing in the position detection circuit 109 and the pen pressure detection circuit 110.
  • Oscillator 104 generates an AC signal with a frequency of f0.
  • the oscillator 104 supplies the generated AC signal to the current driver 105 and the pen pressure detection circuit 110.
  • the current driver 105 converts the AC signal supplied from the oscillator 104 into a current and sends it to the switching connection circuit 107.
  • the switching connection circuit 107 switches the connection destination (transmission side terminal T, reception side terminal R) to which the loop coil selected by the selection circuit 106 is connected under the control of the processing control unit 111. Of these connection destinations, the current driver 105 is connected to the transmitting side terminal T, and the receiving amplifier 108 is connected to the receiving side terminal R, respectively.
  • the switching connection circuit 107 is switched to the transmitting side terminal T side during the transmitting period, and is switched to the receiving side terminal R side during the receiving period.
  • the loop coil that receives the current supplied from the current driver 105 through the transmission side terminal T generates a magnetic field, transmits it to the electronic pen 200, and acts on the resonance circuit of the electronic pen 200.
  • the resonance circuit of the electronic pen 200 generates a position indicating signal (radio wave) and transmits it to the position detection sensor 1.
  • the loop coil selected by the selection circuit 106 is connected to the reception amplifier 108 through the reception side terminal R.
  • the loop coil is affected by the magnetic field from the electronic pen 200, an induced voltage is generated in the loop coil, and this induced voltage is transmitted to the receiving amplifier 108 via the selection circuit 106 and the switching connection circuit 107. Will be sent to.
  • the receiving amplifier 108 amplifies the induced voltage supplied from the loop coil and sends it to the position detection circuit 109 and the pen pressure detection circuit 110.
  • the position detection circuit 109 detects the induced voltage (received signal) generated in the loop coil, converts the detected output signal into a digital signal, and outputs the detected output signal to the processing control unit 111.
  • the processing control unit 111 determines the coordinates of the indicated positions of the electronic pen 200 in the X-axis direction and the Y-axis direction based on the digital signal from the position detection circuit 109, that is, the level of the voltage value of the induced voltage generated in each loop coil. Calculate the value.
  • the pen pressure detection circuit 110 synchronously detects the output signal of the receiving amplifier 108 with the AC signal from the oscillator 104, obtains a signal at a level corresponding to the phase difference (frequency shift) between them, and obtains a signal of a level corresponding to the phase difference (frequency shift).
  • the signal corresponding to (frequency shift) is converted into a digital signal and output to the processing control unit 111.
  • the processing control unit 111 applies the digital signal from the pen pressure detection circuit 110 to the electronic pen 200 based on the level of the signal according to the phase difference (frequency shift) between the transmitted radio wave and the received radio wave. Detects the pressure applied.
  • the position detection circuit 102 switches between the signal transmission period and the reception period, supplies drive power to the electronic pen 200 to drive the electronic pen 200 during the transmission period, and drives the electronic pen 200 during the reception period. It receives a signal and detects the indicated position and pen pressure. The detected indicated position and pen pressure are sent to the control circuit of the motherboard 3 to execute processing according to the icon displayed at the indicated position, or display a drawn image according to the instruction input on the electronic paper 2. You will be able to do it.
  • FIG. 3 is a diagram for explaining a configuration example of the position detection sensor 1, and is an enlarged view of a portion on the left end side of the X-axis direction loop coil group 12X of the position detection sensor 1 shown in FIG. .. That is, in FIG. 3, the description of the Y-axis direction loop coil group 12Y is omitted for the sake of simplicity.
  • a plurality of loop coil groups 12X in the X-axis direction are formed on the surface of the position detection sensor 1 facing the electronic paper 2 (the first surface of the position detection sensor 1). Loop coils X1, X2, X3, X4, ... Are arranged at predetermined intervals.
  • the horizontal direction of the figure is the X-axis direction
  • the vertical direction of the figure is the Y-axis direction.
  • each of the loop coils X1, X2, X3, X4, ... Is a one-turn coil formed in a rectangular shape as shown in FIG.
  • Each of the loop coils X1, X2, X3, X4, ... Connects these to two left and right long sides L1 and R1, L2 and R2, ... Stretched in the Y-axis direction intersecting the X-axis direction. It has short sides S1, S2, ... Stretched in the X-axis direction.
  • adjacent loop coils are arranged so as to have overlapping portions.
  • One end of each of the loop coils X1, X2, X3, X4, ... Is connected to the selection circuit 106, and the other end is grounded.
  • the wire rods d1, d2, d3 are located between the left long side L1 of the loop coil X1 and the left long side L2 of the loop coil X2. Is provided. Further, wire rods d4 and d5 are provided between the right long side R1 of the loop coil X1 and the left long side L3 of the loop coil X3. Similarly, wire rods d6 and d7 are provided between the right long side R2 of the loop coil X2 and the left long side L4 of the loop coil X4, and the right long side R3 of the loop coil X3 and the left long side L5 of the loop coil X5 are provided. Wire rods d8 and d9 are provided between the two.
  • Wires d1, d2, d3, ..., Etc. provide a predetermined wire.
  • Predetermined wire rods such as wire rods d1, d2, d3, ... May be formed of a conductive material such as metal, or may be formed of a non-conductive material such as resin. No matter what material is used, the predetermined wire is not connected to the loop coil or the circuit of the position detection circuit 102. As a result, the sensor surface of the position detection sensor 1 is smoothed so that the pen tip of the electronic pen 200 does not sink significantly.
  • the left long side L2 of the loop coil X2 and the right long side R1 of the loop coil X1 there is enough empty space to sink the pen tip of the electronic pen 200 between the adjacent long sides. If it does not exist, it is not necessary to provide a predetermined wire rod. The same applies between the left long side L3 of the loop coil X3 and the right long side R2 of the loop coil X2, and between the left long side L4 of the loop coil X4 and the right long side R3 of the loop coil X3.
  • the case of the X-axis direction loop coil group 12X has been described as an example.
  • the Y-axis direction loop arranged on the second surface which is the opposite surface of the first surface on which the X-axis direction loop coil group is arranged.
  • a predetermined wire rod is arranged in the coil group 12Y. That is, all the loop coils Y1, Y2, Y3, ... That constitute the Y-axis direction loop coil group 12Y are targeted, and a predetermined wide range is provided between the adjacent long sides as in the case of the X-axis direction loop coil group 12X.
  • a predetermined wire rod is provided in the portion where the empty space exists.
  • the empty space of a predetermined size in the Y-axis direction loop coil group 12Y is the same as in the case of the X-axis direction loop coil group 12X. That is, when the Y-axis direction loop coil group 12Y is formed on the first surface of the insulating layer 13, the pen tip of the electronic pen 200 in contact with the display screen of the electronic paper 2 is in the direction orthogonal to the display screen. A space that can be moved up and down becomes an empty space of a predetermined size.
  • FIG. 4 is a diagram for explaining a configuration example of the position detection sensor 1.
  • FIG. 4A is a top view of a case where the electronic paper 2 is laminated on the position detection sensor 1.
  • FIG. 4B is a cross-sectional view of the left end portion of the position detection sensor 1 and the electronic paper 2 when viewed from the arrow a side of FIG. 4A.
  • FIG. 4C is a diagram showing an example of a drawn image (handwriting image) when a straight line is drawn by bringing the electronic pen 200 into contact with the display screen of the electronic paper 2.
  • FIG. 4D is a cross-sectional view of the left end portion of the position detection sensor 1 and the electronic paper 2 when viewed from the arrow b side of FIG. 4A.
  • the position detection sensor 1 is arranged under the electronic paper 2, and the sensor surface of the position detection sensor 1 corresponds to the entire display screen of the electronic paper 2. As a result, it can be seen that no matter which position on the display screen of the electronic paper 2 is indicated by the electronic pen 200, the indicated position can be appropriately detected.
  • FIG. 4B when the cross section of the left end portion of the position detection sensor 1 and the electronic paper 2 is viewed from the arrow a side of FIG. 4A, the surface of the insulating layer 13 facing the electronic paper 2 is seen.
  • An X-axis direction loop coil group 12X is formed on the (first surface).
  • a Y-axis direction loop coil group 12Y is formed on a surface (second surface) of the insulating layer 13 opposite to the surface (first surface) facing the electronic paper 2.
  • Wires d1, d2, and d3 are provided between the left long side of the loop coil X1 and the left long side of the loop coil X2, which will be described with reference to FIG. 3 and as shown in FIG. 4 (B). Has been done. Further, wire rods d4 and d5 are provided between the right long side of the loop coil X1 and the left long side of the loop coil X3. Similarly, the wire rods d6 and d7 exist between the right long side of the loop coil X2 and the left long side of the loop coil X4, and the right long side R3 of the loop coil X3 and the left long side L5 of the loop coil X5. Wire rods d8 and d9 are provided between them.
  • the pen tip of the electronic pen 200 moves up and down so that the distance between the long sides is a predetermined distance.
  • a predetermined wire rod is placed in an empty space that moves to and causes a waving phenomenon.
  • FIG. 4B even if the pen tip of the electronic pen 200 is brought into contact with the display screen of the electronic paper 2 to perform drawing input, the pen tip of the electronic pen 200 indicated by a black circle Does not sink significantly in the direction orthogonal to the display screen of the electronic paper 2.
  • the pen tip of the electronic pen 200 when the pen tip of the electronic pen 200 is brought into contact with the display screen of the electronic paper 2 to draw a straight line, the pen tip of the electronic pen 200 does not move up and down in the direction intersecting the display screen. Even if it moves up and down, it is very small. Therefore, as shown in FIG. 4C, the drawn straight line image (handwriting image) drawn in this case is a high-quality drawn image that does not undulate or that undulations are not noticeable. ..
  • the second surface of the insulating layer 13 has a cross section.
  • a group of loop coils in the Y-axis direction is formed.
  • the Y-axis direction loop coil group 12Y is formed by disposing loop coils in a direction intersecting the X-axis direction loop coil group 12X.
  • a predetermined wire rod is provided for the Y-axis direction loop coil group 12Y in the same manner as in the case of the X-axis direction loop coil group 12X described above.
  • wire rods da, db, and dc are provided between the left long side of the loop coil Y1 and the left long side of the loop coil Y2. Further, wire rods dd and de are provided between the right long side of the loop coil Y1 and the left long side of the loop coil Y3. Similarly, wire rods df and deg are provided between the right long side of the loop coil Y2 and the left long side of the loop coil Y4, and between the right long side of the loop coil Y3 and the left long side of the loop coil Y5. Is provided with wire rods dh and di.
  • the X-axis direction loop coil group 12X arranged on the first surface of the insulating layer 13 facing the electronic paper 2 but also the Y-axis direction loop coil arranged on the second surface of the insulating layer 13
  • a predetermined wire rod is arranged in the empty space.
  • the sensor surface of the position detection sensor 1 can be further smoothed. This makes it possible to draw more smoothly. That is, even in a terminal device using the electronic paper 2 as a display device, it is possible to perform drawing input with high quality.
  • the sensor surface of the position detection sensor 1 can be smoothed. Therefore, even if the electronic pen 200 is brought into contact with the display screen of the electronic paper 2 arranged on the upper side of the position detection sensor 1 and the drawing input is performed by moving the electronic pen 200, the pen tip of the electronic pen 200 moves greatly up and down. Since there is no such thing, the so-called waving phenomenon does not occur.
  • drawing input by the electronic pen 200 can be performed with high quality. Can be done. That is, even if the terminal device is configured by using the electronic paper 2 as the display device, it is possible to realize a terminal device capable of performing detailed drawing input with high quality.
  • the adjacent loop coils have been described as being arranged so that they partially overlap each other, but the present invention is not limited to this. If the indicated position can be appropriately detected by the electronic pen, it is not necessary to arrange the adjacent loop coils so that they overlap each other.
  • the number of predetermined wires to be arranged between the long sides of the loop coil can be set to an appropriate number according to the size of the empty space existing between the long sides of the loop coil.
  • the predetermined wire rods to be arranged between the long sides of the loop coil are made of a conductive material, by arranging an appropriate number of predetermined wire rods, electric power can be efficiently supplied to the electronic pen 200. In addition, the signal from the electronic pen 200 can be efficiently received.
  • the position detection sensor 1 of the electromagnetic induction method is used has been described, but the present invention is not limited to this.
  • the position detection sensor of the present invention can also be applied to an active electrostatic coupling type position detection sensor that is arranged and used under the electronic paper 2 as a display device.
  • the active electrostatic coupling type position detection sensor includes a sensor unit in which a plurality of linear conductors (line electrodes) are arranged in each of the X-axis direction and the Y-axis direction. Then, the position detection sensor detects the indicated position according to the change in the capacitance (charge) generated in the linear conductor by receiving the signal transmitted from the electrostatic pen in the sensor unit.
  • a predetermined wire rod is placed in the space between the linear conductors arranged in the X-axis direction and the Y-axis direction, respectively, and the pen tip of the electronic pen is moved up and down. It is also possible to suppress the movement.
  • both the X-axis direction loop coil group 12X and the Y-axis direction loop coil group 12Y have been described as arranging a predetermined wire rod in an empty space between the long sides.
  • a predetermined wire rod is arranged in the space between the linear conductors arranged in each of the X-axis direction and the Y-axis direction.
  • the predetermined wire rod may be arranged in the empty space between the adjacent long sides of the loop coil group located on the electronic paper side, or in the empty space between the adjacent linear conductors of the linear conductor group.
  • the present invention can be applied when various display devices that are thin and flexible are used as in the case of electronic paper. That is, the present invention can be applied when various display devices that may be affected when inputting an instruction by an electronic pen are used when the sensor surface of the position detection sensor arranged on the lower side is not smooth.
  • Position detection sensor 12X ... X-axis direction loop coil group, 12Y ... Y-axis direction loop coil group, 13 ... Insulation layer, X1, X2, X3, X4, X5 ... Loop coil, Y1, Y2, Y3, Y4, Y5 ... loop coil, L1, L2, L3, L4, L5 ... left long side, R1, R2, R3, R4 ... right long side, S1, S2, S3, S4, S5 ... short side, d1 to d9 ... predetermined Wire rod, da to di ... predetermined wire rod, 100 ... position detection device, 102 ... position detection circuit, 104 ... oscillator, 105 ... electric driver, 106 ...

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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)
PCT/JP2020/020818 2019-07-02 2020-05-27 端末装置および位置検出センサ Ceased WO2021002123A1 (ja)

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JP2021529922A JPWO2021002123A1 (https=) 2019-07-02 2020-05-27
CN202080045856.4A CN114008572B (zh) 2019-07-02 2020-05-27 终端装置及位置检测传感器
US17/523,885 US11868579B2 (en) 2019-07-02 2021-11-10 Terminal device and position detection sensor including sensor electrodes and linear members arranged in between
US18/523,507 US12141411B2 (en) 2019-07-02 2023-11-29 Terminal device and position detection sensor including sensor electrodes and linear members arranged in between background
US18/912,180 US12596462B2 (en) 2019-07-02 2024-10-10 Terminal device and position detection sensor including sensor electrodes and linear members arranged in between background
JP2024204584A JP7826431B2 (ja) 2019-07-02 2024-11-25 端末装置および位置検出センサ

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CN114008572A (zh) 2022-02-01
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US20240094857A1 (en) 2024-03-21
US20250036249A1 (en) 2025-01-30
US20220066584A1 (en) 2022-03-03
US12141411B2 (en) 2024-11-12
CN114008572B (zh) 2024-11-15
US12596462B2 (en) 2026-04-07
JP7826431B2 (ja) 2026-03-09

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