WO2021130990A1 - Dispositif à panneau tactile, système d'entrée de panneau tactile, procédé de commande de dispositif à panneau tactile et programme - Google Patents

Dispositif à panneau tactile, système d'entrée de panneau tactile, procédé de commande de dispositif à panneau tactile et programme Download PDF

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Publication number
WO2021130990A1
WO2021130990A1 PCT/JP2019/051240 JP2019051240W WO2021130990A1 WO 2021130990 A1 WO2021130990 A1 WO 2021130990A1 JP 2019051240 W JP2019051240 W JP 2019051240W WO 2021130990 A1 WO2021130990 A1 WO 2021130990A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
electrode
operation knob
voltage signal
control unit
Prior art date
Application number
PCT/JP2019/051240
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English (en)
Japanese (ja)
Inventor
峰屹 金
佐々木　雄一
泰 折田
Original Assignee
三菱電機株式会社
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.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020537802A priority Critical patent/JPWO2021130990A1/ja
Priority to PCT/JP2019/051240 priority patent/WO2021130990A1/fr
Publication of WO2021130990A1 publication Critical patent/WO2021130990A1/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
    • 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
    • G06F3/0362—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N13/00—Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect

Definitions

  • the present disclosure relates to a touch panel device, a touch panel input system, a control method of the touch panel device, and a program.
  • a touch panel device capable of detecting an input operation for example, a touch operation and a rotation operation
  • an operation knob arranged on the touch panel for example, a touch operation and a rotation operation
  • a touch panel device capable of performing an input operation by a user's finger have been proposed. See, for example, Patent Documents 1 and 2.
  • the purpose of the present disclosure is to prevent the occurrence of erroneous operation due to the unintended movement of the operation knob on the touch panel.
  • the touch panel device includes a protective film and an electrode portion that generates a Coulomb force that attracts an operation knob that moves along the surface of the protective film toward the protective film. It has a touch film for detecting a position and an electrode control unit for applying a voltage signal to the electrode unit to accumulate electric charges.
  • FIG. (A) is a perspective view schematically showing the configuration of the operation knob according to the first embodiment.
  • (B) is a bottom view schematically showing the configuration of the operation knob according to the first embodiment.
  • (C) is a partially cutaway side view showing the configuration of the operation knob according to the first embodiment.
  • (A) is an exploded perspective view which shows the structure of the touch panel apparatus which concerns on Embodiment 1.
  • FIG. (B) is a cross-sectional view of the touch panel device shown in FIG. 1 cut along the A3-A3 line. It is a functional block diagram which shows schematic structure of the touch panel apparatus which concerns on Embodiment 1.
  • FIG. It is a figure which shows schematic the hardware composition of the touch panel apparatus which concerns on Embodiment 1.
  • FIG. It is a circuit diagram which shows the structure of the touch panel input system which concerns on Embodiment 1.
  • FIG. (A) is a schematic diagram showing a static frictional force between the operation knob and the touch panel when a voltage signal is not applied to the electrode portion of the touch panel device according to the first embodiment.
  • (B) is a schematic diagram showing a static frictional force between the operation knob and the touch panel when a voltage signal is applied to the electrode portion of the touch panel device according to the first embodiment.
  • FIG. (A) is a figure which shows an example of the waveform of the 1st voltage signal applied to the electrode part of the touch panel apparatus which concerns on Embodiment 1.
  • FIG. (B) is a figure which shows an example of the waveform of the 2nd voltage signal applied to the electrode part of the touch panel apparatus which concerns on Embodiment 1.
  • FIG. FIG. 5 is a schematic diagram showing a voltage signal applied to an electrode portion of a touch panel device and a position of an electrode to which the voltage signal is applied in the touch panel input system according to the second embodiment. It is a circuit diagram which shows the structure of the touch panel input system which concerns on Embodiment 2.
  • FIG. 3A is a perspective view showing a state in which the user's hand is not touching the operation knob in the touch panel input system according to the third embodiment.
  • FIG. 14B is a diagram showing an example of a waveform of a voltage signal applied to an electrode portion of the touch panel device shown in FIG. 14A.
  • C is a perspective view showing a state in which a user's hand is touching an operation knob in the touch panel input system according to the third embodiment.
  • FIG. 14D is a diagram showing an example of a waveform of a voltage signal applied to an electrode portion of the touch panel device shown in FIG. 14C.
  • FIG. (A) is a perspective view showing a state in which a user's hand is located near an operation knob in the touch panel input system according to the fourth embodiment.
  • (B) is a plan view of the touch panel input system shown in FIG. 17 (A) as viewed from the + Z axis side.
  • (C) is a schematic diagram showing a change in capacitance detected by the touch panel of the touch panel device according to the fourth embodiment when the user's hand is located near the operation knob.
  • (D) is a plan view of the schematic view shown in FIG.
  • FIG. 17 (C) is a perspective view schematically showing the configuration of the operation knob according to the fifth embodiment.
  • (B) is a bottom view schematically showing the configuration of the operation knob according to the fifth embodiment.
  • (A) is a perspective view schematically showing the configuration of the operation knob according to the sixth embodiment.
  • (B) is a bottom view schematically showing the configuration of the operation knob according to the sixth embodiment.
  • (C) is a partially cutaway side view showing the configuration of the operation knob according to the sixth embodiment.
  • the drawings show the coordinate axes of the XYZ Cartesian coordinate system to facilitate understanding of the description.
  • the X-axis and the Y-axis are touch panels of the touch panel, that is, coordinate axes parallel to the surface. Therefore, the position on the touch panel can be represented by XY coordinates.
  • the Z axis is a coordinate axis perpendicular to the surface of the touch panel.
  • FIG. 1 is a plan view schematically showing the configuration of the touch panel input system 1 according to the first embodiment.
  • the touch panel input system 1 has a touch panel device 10 having a touch panel 11 and an operation knob (hereinafter, also simply referred to as “knob”) 100 that supports an input operation on the touch panel 11.
  • knob an operation knob
  • the touch panel device 10 has an input function in the touch panel 11.
  • the touch panel device 10 can detect an input position (that is, a touch position) on the touch panel 11 based on a change in capacitance on the touch panel 11.
  • the touch panel device 10 can accept an input operation performed by bringing the user's finger into contact with the touch surface of the touch panel 11. For example, when the user's finger touches the touch surface of the touch panel 11, an increase in capacitance in the contact area between the touch surface and the user's finger is detected.
  • the user performs an operation using the operation knob 100 placed on the touch surface of the touch panel 11, and the touch panel device 10 performs an input operation equivalent to a touch operation performed by bringing the user's finger into contact with the touch panel 11.
  • a rotation operation also referred to as a "dial operation”
  • a touch operation performed by touching the touch panel 11 with a finger and an input operation equivalent to a slide operation can be performed. This can be done by rotating or sliding the operation knob 100.
  • an input operation equivalent to a touch operation of pressing a finger on the touch panel 11 can be performed.
  • the touch operation of pressing the finger on the touch panel 11 is, for example, a long-press operation in which the finger is continuously pressed on the touch panel 11, or a tracing operation in which the finger pressed on the touch panel 11 is moved.
  • the touch panel device 10 detects the touch position when the operation knob 100 is operated by detecting the change in the capacitance of the touch panel 11.
  • the touch position on the touch panel 11 may be detected by a method other than the capacitance detection.
  • the touch panel 11 includes an electrode array 14 as an electrode portion.
  • the electrode array 14 generates a Coulomb force that attracts the operation knob 100 to the touch surface of the touch panel 11 when a voltage signal is applied from the electrode control unit (that is, the electrode control unit 22 described later).
  • the Coulomb force is an suction force generated between the operation knob 100 and the touch surface of the touch panel 11.
  • FIG. 2A is an exploded perspective view schematically showing the configuration of the operation knob 100.
  • FIG. 2B is a bottom view schematically showing the configuration of the operation knob 100.
  • FIG. 2C is a partially cutaway side view illustrating the internal structure of the operation knob 100.
  • the operation knob 100 has a grip portion 110 gripped by the user, a conductor portion 120 as a first conductor portion, and a conductive portion 130. There is.
  • the grip portion 110 is composed of, for example, a cylindrical wall portion 110a.
  • the grip portion 110 is annular in a plan view.
  • the grip 110 is made of a conductive material (eg, metal).
  • the shape of the grip portion 110 is not limited to the shapes shown in FIGS. 2A to 2C, and may be any other shape as long as it can be gripped by the user.
  • the conductor portion 120 comes into contact with the touch surface of the touch panel 11 (see FIG. 1) when the operation knob 100 is placed on the touch surface.
  • the conductor portion 120 is formed of a conductive elastic body (for example, rubber).
  • the conductor portion 120 has a plurality of conductors 121, 122, 123 (three in the first embodiment).
  • the conductors 121, 122, 123 are, for example, columnar members.
  • the conductors 121, 122, and 123 are attached to the inside of the grip portion 110.
  • the conductors 121, 122, and 123 are in contact with the inner peripheral surface of the grip portion 110.
  • the conductors 121, 122, 123 and the grip portion 110 are electrically connected. At least one of the three conductors 121, 122, and 123 may be conducting with the grip portion 110.
  • the three conductors 121, 122, and 123 are arranged at a plurality of predetermined positions. As shown in FIG. 2B, the three conductors 121, 122, and 123 are arranged at the same distance from each other. That is, the three conductors 121, 122, and 123 are arranged at the three apex positions of the equilateral triangle, respectively. The three conductors 121, 122, and 123 may be arranged at the three apex positions of the right triangle, respectively. Further, the number of conductors 121, 122, 123 included in the conductor portion 120 is not limited to three, and may be two or more.
  • the number of conductors is four, it is desirable that the four conductors are arranged at the four vertex positions of the square.
  • the number of conductors is 5, it is desirable that the 5 conductors are arranged at the 5 vertex positions of the regular pentagon.
  • the lower ends (that is, the ⁇ Z axis side) of the three conductors 121, 122, and 123 each protrude from the grip portion 110. That is, the length of the conductors 121, 122, 123 in the Z-axis direction is longer than the length of the grip portion 110 in the Z-axis direction. Therefore, when the operation knob 100 is placed on the touch surface of the touch panel 11 (see FIG. 1), a gap is formed between the grip portion 110 and the touch surface of the touch panel 11. An insulator that covers the gap between the grip portion 110 and the touch surface of the touch panel 11 may be attached to the lower end portion of the grip portion 110.
  • the shapes and sizes of the conductors 121, 122, and 123 are not limited to those shown in FIGS. 2 (A) to 2 (C) as long as they have a shape and size that can detect the capacitance of the touch panel 11. It may be in shape and size.
  • the conductive portion 130 is a member that conducts the three conductors 121, 122, and 123 with each other.
  • the conductive portion 130 is formed of a conductive material (for example, metal).
  • the conductive portion 130 is arranged inside the grip portion 110 with respect to the conductors 121, 122, and 123.
  • the conductive portion 130 is composed of a cylindrical wall portion 130a. That is, the inside of the conductive portion 130 is hollow.
  • the outer peripheral surface of the wall portion 130a is in contact with the conductors 121, 122, 123. As a result, the conducting portion 130 and the conductors 121, 122, 123 are conducting.
  • the conducting portion 130 When the conductive portion 130 is conducting with the conductors 121, 122, 123 and the drive signal for detecting the position of the conductors 121, 122, 123 is not applied to the touch sensor array 13 described later (that is,).
  • Parasitic capacitance that is, capacitance
  • the conducting portion 130 may be formed of an insulator.
  • the operation knob 100 may have a support member 140.
  • the support member 140 is a member that holds the positions of the three conductors 121, 122, and 123, respectively.
  • the support member 140 is attached to the end of the grip portion 110 on the + Z axis side.
  • the support member 140 is, for example, an annular member. When the support member 140 is attached to the grip portion 110, the support member 140 comes into contact with the upper surfaces of the three conductors 121, 122, and 123, respectively.
  • the support member 140 may be a part of the grip portion 110. Further, when the support member 140 is formed of a conductive material (for example, metal), the conductive portion 130 may be formed of an insulator.
  • the conductive support member 140 is arranged at the position farthest from the touch surface of the touch panel 11 on the + Z axis side, so that the parasitic capacitance between the members excluding the conductors 121, 122, 123 and the touch surface is increased. Occurrence can be prevented.
  • FIG. 3A is an exploded perspective view showing the configuration of the touch panel 11 of the touch panel device 10.
  • FIG. 3B is a cross-sectional view of the touch panel 11 shown in FIG. 1 cut along the A3-A3 line.
  • the touch panel 11 has a substrate 12, a touch sensor array 13, an electrode array 14, and a protective film 15.
  • the substrate 12 is, for example, a transparent glass substrate.
  • the touch sensor array 13 is arranged on the + Z axis side of the substrate 12.
  • the touch sensor array 13 includes a plurality of touch sensors 13a arranged in a direction along the protective film 15.
  • the plurality of touch sensors 13a are arranged in a matrix of a plurality of rows and a plurality of columns, for example.
  • the plurality of touch sensors 13a are arranged so as to cover the entire surface of the substrate 12.
  • the touch sensor array 13 includes a rectangular X-coordinate detection sensor extending along the X-axis direction of the touch surface of the touch panel 11 and a rectangular Y-coordinate detection sensor extending along the Y-axis direction of the touch surface. May be configured by making them orthogonal to each other.
  • the touch sensor 13a is a finger or an operation based on a change in the detected value of the capacitance between the conductor 121, 122, 123 (see FIGS. 2A to 2C) of the user's finger or the operation knob 100. Detects the touch position of a conductor such as the knob 100.
  • a drive signal (that is, a drive signal S12, which will be described later) is applied to the touch sensor 13a from the electrode control unit (that is, the electrode control unit 22 which will be described later). Based on this drive signal, a detection signal corresponding to a change in capacitance at each position of the touch panel 11 can be obtained from the touch sensor 13a.
  • the electrode array 14 is arranged on the + Z axis side of the touch sensor array 13.
  • the electrode array 14 is arranged between the touch sensor array 13 and the protective film 15.
  • the electrode array 14 includes a plurality of electrodes 14a arranged in a direction along the protective film 15.
  • the plurality of electrodes 14a are arranged in a matrix of a plurality of rows and a plurality of columns, for example.
  • the plurality of electrodes 14a overlap each other of the plurality of touch sensors 13a.
  • the electrode array 14 is configured by making a rectangular electrode extending along the X-axis direction of the touch surface of the touch panel 11 and a rectangular electrode extending along the Y-axis direction of the touch surface orthogonal to each other. You may.
  • the protective film 15 is arranged on the + Z axis side of the electrode array 14.
  • the protective film 15 covers the plurality of electrodes 14a.
  • the protective film 15 is, for example, an insulating film.
  • the operation knob 100 shown in FIG. 2 moves along the surface 15a of the protective film 15.
  • the configuration of the touch panel 11 is not limited to the configurations shown in FIGS. 3A and 3B.
  • the electrode array 14 and the touch sensor array 13 may be arranged in the same layer. That is, the electrode array 14 and the touch sensor array 13 may be arranged at the same position in the thickness direction of the touch panel 11.
  • FIG. 4 is a functional block diagram schematically showing the configuration of the touch panel device 10.
  • the touch panel device 10 includes a touch panel 11, a knob conductor position determination unit 21, and an electrode control unit 22.
  • the knob conductor position determination unit 21 determines the presence / absence of the operation knob 100 and the positions of the conductors 121, 122, and 123 based on the detection signal output from the touch sensor array 13.
  • the knob conductor position determination unit 21 outputs information about the presence / absence of the operation knob 100 and the positions of the conductors 121, 122, 123 to the electrode control unit 22 as determination result information.
  • the electrode control unit 22 controls to apply a voltage signal (that is, a voltage signal S11 described later) to the electrode array 14 shown in FIG. 3 based on the determination result information output from the knob conductor position determination unit 21. ..
  • the touch panel device 10 further includes a touch operation determination unit (not shown) that determines the operation of the touch panel 11 by a conductor such as a finger or an operation knob 100.
  • the knob conductor position determination unit 21, the electrode control unit 22, and the touch operation determination unit constitute the control unit 50 shown in FIG.
  • FIG. 5 is a diagram schematically showing the hardware configuration of the touch panel device 10.
  • the control unit 50 is realized by using a memory 51 as a storage device for storing a program as software and a processor 52 as an information processing unit for executing the program stored in the memory 51 (for example, by a computer). Can be done.
  • a part of the control unit 50 that is, a knob conductor position determination unit 21, an electrode control unit 22, and a part of the touch operation determination unit of the touch panel device 10 is executed with the memory 51 shown in FIG. 5 and a program. It may be realized by the processor 52. Further, the control unit 50 may be realized by an electric circuit.
  • the display 53 displays the operation screen by superimposing it on the touch surface of the touch panel 11.
  • the operation knob 100 is appropriately placed or attached to the touch surface of the touch panel 11.
  • the touch panel 11 detects a change in capacitance and transmits touch information to the processor 52 through the bus 54.
  • the touch information includes, for example, the identification number of the touch sensor corresponding to the touch position or the coordinates of the touch position, the contact state of a conductor such as a finger or the operation knob 100 with respect to the touch panel 11, and the detection value of the capacitance by the touch sensor 13a. ..
  • the processor 52 stores the touch information acquired from the touch panel 11 in the memory 51, and detects the positions of the conductors 121, 122, and 123 of the operation knob 100 from the history information of the touch information stored in the memory 51.
  • the electrode control unit 22 includes a signal generation unit 22a and an amplification unit 22b.
  • the signal generation unit 22a generates a voltage signal S11 having a constant voltage applied to the electrode 14a and a drive signal S12 having a constant voltage applied to the touch sensor 13a.
  • the period of the voltage signal S11 is different from the period of the drive signal S12.
  • the voltage signal S11 is, for example, a sine wave signal.
  • the drive signal S12 is, for example, a pulse wave signal.
  • the amplification unit 22b amplifies the voltage of the voltage signal S11.
  • the amplification unit 22b is, for example, an operational amplifier.
  • the amplified voltage signal S11 is output to the electrode array 14.
  • the electrode control unit 22 turns on the switch SW1 and applies the voltage signal S11 output from the signal generation unit 22a to the electrode 14a via the amplification unit 22b and the switch SW2 in the ON state. Further, the electrode control unit 22 turns on the switch SW3 and the switch SW4, and applies the drive signal S12 output from the signal generation unit 22a to the touch sensor 13a.
  • the touch sensor 13a is connected to the measuring instrument (for example, A / D converter) 24 via the switch SW5.
  • the measuring instrument 24 is generated when an object (for example, a user's finger or an operation knob 100) comes into contact with the touch surface of the touch panel 11 based on the amount of electric charge accumulated in the touch sensor 13a by applying the drive signal S12. Measure the capacitance.
  • the electrode control unit 22 causes the measuring instrument 24 to measure the capacitance by turning the switch SW3 and the switch SW4 in the OFF state and the switch SW5 in the ON state.
  • FIG. 7A is a schematic view showing a static friction force f1 between the operation knob 100 and the touch panel 11 when a voltage is not applied to the electrode array 14 of the touch panel 11.
  • FIG. 7B is a schematic view showing a static friction force f2 between the operation knob 100 and the touch panel 11 when a voltage is applied to the electrode array 14 of the touch panel 11. Note that in FIGS. 7A and 7B, the touch sensor array 13 is not shown.
  • the static friction force f1 between the operation knob 100 and the protective film 15 of the touch panel 11 has a magnitude based on the static friction coefficient of the conductor portion 120 which is an elastic body and the normal force acting on the operation knob 100. ..
  • no voltage is applied to the electrode array 14, and no Coulomb force is generated between the conductor portion 120 of the operation knob 100 and the electrode array 14.
  • a negative charge may be accumulated in the electrode array 14 and a positive charge may be accumulated in the conductor portion 120.
  • the conductor portion 120 is an elastic body. Therefore, when the Coulomb force Fc is generated, the conductor portion 120 is elastically deformed, so that the contact area between the conductor portion 120 and the protective film 15 increases. Therefore, since the conductor portion 120 is an elastic body, a sufficiently large static friction force f2 is generated between the operation knob 100 and the touch panel 11 even when the amount of electric charges accumulated in the electrode array 14 and the conductor portion 120 is small. Can be secured.
  • the voltage signal S11 applied to the electrode array 14 of the touch panel device 10 and the positions of the electrodes to which the voltage signal S11 is applied will be described.
  • the touch panel 11 detects a change in capacitance in the contact area with the conductors 121, 122, 123.
  • the drive signal S12 applied to the touch sensor array 13 changes, so that the position of the contact region on the touch panel 11 can be detected.
  • the position of the contact region detected by the touch sensor array 13 is the equilateral triangle.
  • the positions of the conductors 121, 122, and 123 of the operation knob 100 can be estimated when they correspond to the three vertex positions of.
  • the electrode control unit 22 is previously attached to the electrode groups 14aa, 14ab, 14ac arranged at positions corresponding to the positions of the conductors 121, 122, 123 among the plurality of electrodes 14a based on the positions of the conductors 121, 122, 123.
  • the set voltage signal S11 is applied. Specifically, the electrode control unit 22 applies the voltage signal S11 to the electrode groups 14aa, 14ab, 14ac arranged at positions facing the conductors 121, 122, 123.
  • the Coulomb force Fc shown in FIG. 7B can be generated.
  • the electrode group 14aa is composed of a plurality of adjacent electrodes 14a facing the conductor 121 (for example, four in FIG. 7B).
  • the electrode group 14ab is composed of a plurality of electrodes 14a adjacent to each other facing the conductor 122.
  • the electrode group 14ac is composed of a plurality of electrodes 14a adjacent to each other facing the conductor 123.
  • the voltage signal S11 may be applied to one electrode 14a facing the conductor 121, one electrode 14a facing the conductor 122, and one electrode 14a facing the conductor 123.
  • the electrode control unit 22 applies the voltage signal S11 to the three electrode groups 14aa, 14ab, 14ac facing the three conductors 121, 122, 123, respectively.
  • a Coulomb force that attracts the three conductors 121, 122, and 123 to the surface 15a of the protective film 15 is generated, so that the static friction force between the operation knob 100 and the touch panel 11 is further increased.
  • the electrode control unit 22 may apply the voltage signal S11 to the electrodes facing some of the three conductors 121, 122, and 123.
  • the electrode control unit 22 starts applying the voltage signal S11 from a time before the user's hand touches the operation knob 100.
  • a Coulomb force can be generated between the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac from the time before the input operation using the operation knob 100 by the user is performed.
  • FIG. 9 is a flowchart showing the operation of the touch panel device 10.
  • step ST11 the touch panel device 10 starts a loop process that repeats the processes of steps ST12 to ST26 after activation.
  • step ST12 the knob conductor position determination unit 21 detects the touch position on the touch panel 11 and notifies the touch information.
  • the knob conductor position determination unit 21 sets, for example, an operation knob determination condition indicating that the combination of the detected touch positions is a combination of the touch positions of the conductors 121, 122, 123 of the operation knob 100. Find the combination that meets.
  • step ST14 when the knob conductor position determination unit 21 finds a combination of touch positions satisfying the operation knob determination condition, it determines that the operation knob 100 is on the touch panel 11 (that is, in the case of Yes in step ST14). The process proceeds to step ST15. On the other hand, when the combination of touch positions satisfying the operation knob determination condition does not exist, the knob conductor position determination unit 21 determines that the operation knob 100 does not exist on the touch panel 11 (that is, when No in step ST14), and performs processing. Proceed to step ST23.
  • step ST15 the knob conductor position determination unit 21 determines the positions of the conductors 121, 122, and 123 of the operation knob 100 based on the combination of touch positions that satisfy the operation knob determination conditions.
  • step ST16 the knob conductor position determination unit 21 performs an input operation using the operation knob 100 (“knob operation” based on the positions of the conductors 121, 122, 123 of the operation knob 100 and the detected value of the change in capacitance. It is determined whether or not (also referred to as) has been performed. For example, the knob conductor position determination unit 21 determines whether or not the user's hand has touched the operation knob 100, or whether or not the operation knob 100 has moved on the touch surface of the touch panel 11.
  • step ST17 when the knob conductor position determination unit 21 determines that the input operation using the operation knob 100 has been performed (that is, in the case of Yes in step ST17), the process proceeds to step ST18. If not (that is, No in step ST17), the knob conductor position determination unit 21 advances the process to step ST20.
  • the electrode control unit 22 selects an electrode arranged at a position corresponding to the position of the conductors 121, 122, 123 among the plurality of electrodes 14a provided on the touch panel 11. Specifically, the electrode control unit 22 selects electrode groups 14aa, 14ab, and 14ac corresponding to the positions of the conductors 121, 122, and 123, respectively. The electrode control unit 22 may also select a voltage signal (that is, a first voltage signal S11a, which will be described later) to be applied to the electrode groups 14aa, 14ab, and 14ac in step ST18.
  • a voltage signal that is, a first voltage signal S11a, which will be described later
  • the electrode control unit 22 applies the first voltage signal S11a to the electrode groups 14aa, 14ab, and 14ac.
  • FIG. 10A is a diagram showing an example of the waveform of the first voltage signal S11a.
  • the horizontal axis represents time and the vertical axis represents voltage.
  • the first voltage signal S11a has a period having an amplitude of a certain value or more and a period having an amplitude of less than a certain value (specifically, a period in which the amplitude is substantially 0). It is an intermittent voltage signal.
  • the electrode control unit 22 electrodes the first voltage signal S11a intermittently during the period when the detection value of the capacitance of the touch sensor 13a exceeds a predetermined threshold value by operating the knob. Apply to groups 14aa, 14ab, 14ac. Therefore, when the input operation using the operation knob 100 is performed, the user alternately has a period in which the operation knob 100 is moved even with a weak force and a period in which the operation knob 100 is moved with a strong force. This can be felt by the hand holding the operation knob 100.
  • the touch panel device 10 can give the user a tactile sensation of touching the operation knob 100.
  • the electrode control unit 22 is arranged at a position corresponding to the position of the conductors 121, 122, 123 among the plurality of electrodes 14a provided on the touch panel 11, similarly to step ST18. Select the electrode you are using. Specifically, the electrode control unit 22 selects electrode groups 14aa, 14ab, and 14ac corresponding to the positions of the conductors 121, 122, and 123, respectively. The electrode control unit 22 may also select a voltage signal (that is, a second voltage signal S11b, which will be described later) to be applied to the electrode groups 14aa, 14ab, and 14ac in step ST20.
  • a voltage signal that is, a second voltage signal S11b, which will be described later
  • step ST21 the electrode control unit 22 applies the second voltage signal S11b to the electrode groups 14aa, 14ab, and 14ac.
  • FIG. 10B is a diagram showing an example of the waveform of the second voltage signal S11b.
  • the second voltage signal S11b is a continuous voltage signal.
  • the electrode control unit 22 electrodes the second voltage signal S11b that is continuous until the knob touch operation is performed, in other words, until the detection value of the capacitance of the touch sensor 13a exceeds a predetermined threshold value. Apply to groups 14aa, 14ab, 14ac.
  • step ST22 the control unit 50 acquires a combination of touch positions that does not satisfy the operation knob determination condition from the combinations of touch positions detected by the knob conductor position determination unit 21.
  • the control unit 50 acquires, for example, a combination of touch positions that does not satisfy the operation knob determination condition as finger touch information.
  • step ST14 When it is determined in step ST14 that the operation knob 100 does not exist, or in step ST23 after the processing in step ST22 is completed, the control unit 50 determines the combination of touch positions and the change in capacitance that do not satisfy the operation knob determination condition. Based on the detected value, it is determined whether or not a touch operation by the user's finger (hereinafter, also referred to as "finger touch operation”) is performed.
  • finger touch operation a touch operation by the user's finger
  • step ST24 when the control unit 50 determines that the finger touch operation is performed and the voltage signal S11 needs to be applied to the electrode array 14 (that is, in the case of Yes in step ST21), the process is stepped. Proceed to ST25.
  • the electrode control unit 22 selects one or more electrodes arranged at positions corresponding to the positions of the user's fingers among the plurality of electrodes 14a provided on the touch panel 11. For example, the electrode control unit 22 selects one or more electrodes 14a arranged at a position facing the user's finger or a position facing the periphery of the finger among the plurality of electrodes 14a.
  • step ST26 the electrode control unit 22 applies the first voltage signal S11a shown in FIG. 10A to the selected electrode.
  • the Coulomb force can be intermittently generated between the finger and the electrode 14a. Therefore, when the finger touch operation is being performed, the user touches the touch panel 11 to indicate that the period in which the finger touch operation is performed with a weak force and the period in which the finger touch operation is performed with a strong force are alternately generated. You can feel it with your finger. In other words, the user feels with his / her finger that the period during which the finger touch operation is easy (that is, the period during which the resistance is weak) and the period during which the finger touch is difficult to operate (that is, the period during which the resistance is strong) occur alternately. Can be done. Therefore, the touch panel device 10 can give the user a tactile sensation of touching the touch panel 11.
  • steps ST11 to ST26 are repeated until the condition for ending the loop processing is satisfied.
  • step ST12 the touch position on the touch panel 11 when the user's hand is in contact with the operation knob 100 may be detected.
  • the first voltage signal S11a or the second voltage signal S11b is continuously applied to the electrode 14a. be able to.
  • the electrode control unit 22 uses the operation knob based on the touch information at the time of the previous knob operation.
  • the movement locus of 100 may be estimated, and the first voltage signal S11a may be applied to the electrode 14a arranged at a position corresponding to the movement locus.
  • the conductors 121, 122, 123 of the operation knob 100 are elastic bodies, the conductors are elastically deformed when the Coulomb force Fc is generated, so that the operation knob 100 and the touch panel 11
  • the contact area with the touch surface can be increased, and even when the amount of electric charge accumulated in the electrode array 14 and the conductors 121, 122, 123 is small, the distance between the operation knob 100 and the touch panel 11 is sufficiently large.
  • the frictional force f2 can be secured.
  • the electrode control unit 22 starts applying the voltage signal S11 from a time before the user's hand touches the operation knob 100.
  • the voltage signal S11 is applied to the electrode groups 14aa, 14ab, 14ac arranged at the positions corresponding to the conductors 121, 122, 123 of the operation knob 100 among the plurality of electrodes 14a. , The number of electrodes to be controlled can be reduced, and the circuit scale or power consumption can be suppressed. Further, by applying the voltage signal S11 only to the electrode groups 14aa, 14ab, 14ac arranged at the positions corresponding to the conductors 121, 122, 123, the region other than the region where the operation knob 100 exists on the touch panel 11 When the user's finger comes into contact, no Coulomb force is generated between the finger and the electrode 14a. As a result, when the user touches the finger on the area other than the area where the operation knob 100 exists on the touch panel 11, the user does not feel that the finger is attracted to the touch panel 11 and performs the finger touch operation without any inconvenience. be able to.
  • Embodiment 2 when the input operation using the operation knob 100 is not performed on the touch panel 11, the second electrode group 14aa, 14ab, 14ac corresponding to the conductors 121, 122, 123 is the second.
  • An example in which the voltage signal S11b (shown in FIG. 10B) is continuously applied has been described. However, if the second voltage signal S11b is continuously applied to the electrode groups 14aa, 14ab, 14ac when the operation knob 100 is not touched by the user, the conductors 121, 122, 123 and the electrode group 14aa, Charges are unevenly accumulated in one of 14ab and 14ac.
  • the amount of electric charge accumulated in one of the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac increases too much, and the potential difference between the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac is constant. If the value is exceeded, a discharge phenomenon may occur between the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac. When the discharge phenomenon occurs, the protective film 15 may be damaged due to the current flowing through the protective film 15.
  • an example of preventing the occurrence of a discharge phenomenon between the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac will be described.
  • FIG. 11 shows the voltage signals S21, S22, S23 applied to the electrode array 14 of the touch panel device 20 and the electrode group 14aa to which the voltage signals S21, S22, S23 are applied in the touch panel input system 2 according to the second embodiment.
  • 14ab, 14ac are schematic views showing the positions.
  • the same or corresponding components as those shown in FIG. 8 are designated by the same reference numerals as those shown in FIG.
  • the touch panel input system 2 has a touch panel device 20 and an operation knob 100.
  • the functional block of the touch panel device 20 according to the second embodiment is the same as that shown in FIG.
  • the hardware configuration of the touch panel device 20 according to the second embodiment is the same as that shown in FIG. Therefore, in the second embodiment, FIGS. 4 and 5 are also referred to.
  • the electrode control unit 22 of the touch panel device 20 grounds the electrode groups 14aa, 14ab, 14ac (that is, connects them to the ground) in order to release the charges accumulated in the electrode groups 14aa, 14ab, 14ac.
  • A1 and A3 are provided.
  • the electrode control unit 22 periodically grounds each of the plurality of electrode groups 14aa, 14ab, and 14ac.
  • the electrode control unit 22 applies a voltage to the electrode groups 14aa, 14ab, 14ac so that the time zones A2, A1, and A3 for grounding each of the plurality of electrode groups 14aa, 14ab, 14ac are displaced from each other.
  • the signals S21, S22, S23 are applied. Thereby, the occurrence of the discharge phenomenon can be prevented.
  • the operation knob 100 according to the second embodiment needs to have two or more conductors.
  • FIG. 12 is a circuit diagram showing the configuration of the touch panel input system 2 according to the second embodiment.
  • the same or corresponding components as those shown in FIG. 6 are designated by the same reference numerals as those shown in FIG.
  • the touch panel input system 2 is different from the touch panel input system 1 shown in FIG. 6 in that the switch SW32 is further provided between the amplification unit 22b and the electrode 14a.
  • the switch SW32 is a switch that connects the electrode 14a to the electrode control unit 22 or the ground GND.
  • the switch SW32 When the switch SW32 is connected to the first terminal P1 and the switch SW1 is in the ON state, the voltage signal S11 is applied to the electrode 14a.
  • the switch SW32 When the switch SW32 is connected to the second terminal P2, the electrode 14a is connected to the ground. At this time, the voltage signal S11 is not applied to the electrode 14a even when the switch SW1 is in the ON state.
  • step ST18 and step ST20 the electrode 14a corresponding to a part of the conductors 121, 122, 123 and the electrode 14a connected to the ground are selected.
  • the touch panel device 20 may perform a process of connecting the electrode 14a to the ground to release the electric charge, and then perform a process of detecting the touch position and applying a voltage signal to the electrode 14a.
  • the charge accumulated in the electrode groups 14aa, 14ab, 14ac is released by providing a time zone for connecting the electrode groups 14aa, 14ab, 14ac to the ground. Therefore, it is possible to prevent a discharge phenomenon from occurring between the conductors 121, 122, 123 of the operation knob 100 and the electrode groups 14aa, 14ab, 14ac.
  • the second embodiment is the same as the first embodiment.
  • Embodiment 3 In the first and second embodiments, an example in which a Coulomb force Fc is generated between the conductors 121, 122, 123 and the electrode 14a has been described from a time point before the input operation using the operation knob 100 is performed. However, when the user's hand touches the operation knob 100, the conductors 121, 122, 123 are connected to the user and a part of the electric charge flows to the user, and between the conductors 121, 122, 123 and the electrode 14a. The Coulomb force Fc may become too weak. In the third embodiment, an example of suppressing a decrease in the Coulomb force Fc between the conductors 121, 122, 123 and the electrode 14a even when the user's hand is touching the operation knob 100 will be described.
  • the touch panel input system according to the third embodiment includes a touch panel device 30 and an operation knob 100. Since the configuration of the operation knob 100 according to the third embodiment is the same as that shown in FIGS. 2A to 2C, the same reference numerals as those of the operation knob 100 according to the first embodiment are used. It is attached.
  • FIG. 13 is a functional block diagram showing the configuration of the touch panel device 30 according to the third embodiment.
  • the same or corresponding components as those shown in FIG. 4 are designated by the same reference numerals as those shown in FIG.
  • the touch panel device 30 is different from the touch panel device 10 according to the first or second embodiment in that it further includes a knob touch determination unit 33.
  • the knob conductor position determination unit 21, the electrode control unit 22, and the knob touch determination unit 33 constitute the control unit 50 shown in FIG.
  • the hardware configuration of the touch panel device 30 according to the third embodiment is the same as that shown in FIG.
  • the knob touch determination unit 33 determines whether or not the user's hand is in contact with the operation knob 100 from the detected value of the change in capacitance at the positions of the conductors 121, 122, and 123. When the knob touch determination unit 33 determines that the user's hand is in contact with the operation knob 100, the knob touch determination unit 33 outputs the detected value of the change in capacitance at the positions of the conductors 121, 122, and 123 to the electrode control unit 22.
  • FIG. 14A is a perspective view showing a state in which the user's hand is not touching the operation knob 100 in the touch panel input system 3 according to the third embodiment.
  • FIG. 14B is a diagram showing an example of the waveform of the voltage signal S11 applied to the electrode array of the touch panel device 30 shown in FIG. 14A.
  • the electrode array of the touch panel device 30 contains, for example, a voltage signal S11 having a preset amplitude. , Is applied continuously.
  • FIG. 14C is a perspective view showing a state in which the user's hand H is touching the operation knob 100 in the touch panel input system 3.
  • 14 (D) is a diagram showing an example of the waveform of the voltage signal S31 applied to the electrode array of the touch panel device 30 shown in FIG. 14 (C).
  • the voltage signal S11 shown in FIG. 14 (B) is transmitted to the electrode array of the touch panel device 30.
  • the corrected and corrected voltage signal S31 is applied.
  • the amplitude of the corrected voltage signal S31 is larger than the amplitude of the uncorrected voltage signal S11.
  • the electrode control unit 22 applies a voltage signal to the electrode array during the period when the user's hand H is in contact with the operation knob 100, that is, during the period when the capacitance of the touch sensor 13a exceeds a predetermined threshold value. Increase the value of. Therefore, the value of the voltage applied when the user's hand H comes into contact with the operation knob 100 is larger than the value of the voltage applied before the user's hand H comes into contact with the operation knob 100.
  • the amount of electric charge accumulated in the electrode array and the amount of electric charge accumulated in the conductor of the operation knob 100 increases, so that even when the user's hand H is touching the operation knob 100, the conductor of the operation knob 100 and the conductor It is possible to suppress a decrease in the Coulomb force between the electrode array and the electrode array.
  • step ST18 the electrode control unit 22 applies the corrected voltage signal S31 of the electrode groups 14aa, 14ab, 14ac corresponding to the conductors 121, 122, 123 and the electrode groups 14aa, 14ab, 14ac. Select the above electrode group. Further, in step ST19, the electrode control unit 22 applies the corrected voltage signal S31.
  • the voltage applied to the electrode array when the user's hand H touches the operation knob 100 is applied before the user's hand H touches the operation knob 100.
  • the voltage larger than the voltage it is possible to suppress a decrease in the Coulomb force that occurs when the user's hand H touches the operation knob 100.
  • the third embodiment is the same as the first or second embodiment.
  • the touch panel device when the operation knob is not touched by the user's hand, the plurality of electrode groups corresponding to the plurality of conductors of the operation knob are shown in FIG. 10 (B). Continue to apply the voltage signal S11b of 2. As a result, the touch panel device according to the modified example of the third embodiment suppresses a decrease in the Coulomb force between the plurality of conductors of the operation knob and the plurality of electrode groups without executing the process of correcting the voltage signal. It is possible to stably present the tactile sensation to the user.
  • the modified example of the third embodiment is the same as that of the first or second embodiment.
  • Embodiment 4 An example in which the electrode control unit 22 applies the corrected voltage signal S31 to the electrode array 14 when it is detected that the user's hand H is touching the operation knob 100 has been described. However, since a time lag occurs between the time when the user's hand H touches the operation knob 100 and the time when the corrected voltage signal S31 is applied, that is, a time lag occurs. The user's hand may touch the operation knob 100 before the time when the Coulomb force with the electrode array 14 of the touch panel 11 is generated. In the fourth embodiment, not only when the operation knob 100 is touched by the user's hand, but also before the user's hand touches the operation knob 100 (that is, the user's hand H is located near the operation knob 100). A configuration in which a voltage signal for generating a Coulomb force is applied to the electrode array 14 will be described.
  • the touch panel input system 4 according to the fourth embodiment includes a touch panel device 40 and an operation knob 100. Since the configuration of the operation knob 100 according to the fourth embodiment is the same as that shown in FIGS. 2A to 2C, the same reference numerals as those of the operation knob 100 according to the first embodiment are added. ing.
  • FIG. 15 is a functional block diagram schematically showing the configuration of the touch panel device 40 according to the fourth embodiment.
  • the same or corresponding components as those shown in FIG. 4 are designated by the same reference numerals as those shown in FIG.
  • the hardware configuration of the touch panel device 40 according to the fourth embodiment is the same as that shown in FIG. Therefore, in the following description of the fourth embodiment, reference will be made to FIGS. 4 and 5.
  • the touch panel device 40 is different from the touch panel device 10 according to the first or second embodiment in that it further includes a proximity determination unit 43.
  • the proximity determination unit 43 determines whether or not the user's hand is located near the touch panel 11 based on the detection value of the capacitance of the touch sensor 13a on the touch panel 11.
  • the proximity determination unit 43 determines, for example, that the user's hand is located near the touch panel 11 when the detected value of the capacitance exceeds a predetermined threshold value.
  • the proximity determination unit 43 outputs the determination result to the knob conductor position determination unit 21 and the electrode control unit 22.
  • the electrode control unit 22 receives the determination result of the proximity determination unit 43 and the determination result of the knob conductor position determination unit 21, and determines whether or not to apply a voltage signal to the electrode array 14 of the touch panel 11.
  • the knob conductor position determination unit 21, the electrode control unit 22, and the proximity determination unit 43 constitute the control unit 50 shown in FIG.
  • FIG. 16 a circuit configuration for detecting the position of the user's hand with respect to the touch panel or the operation knob will be described.
  • the same or corresponding components as those shown in FIG. 12 are designated by the same reference numerals as those shown in FIG.
  • the touch panel input system 4 is different from the touch panel input system 2 shown in FIG. 12 in that it further includes a switch SW41, a switch SW42, and a measuring instrument 25.
  • the electrode control unit 22 sets the switch SW1 to the ON state and the switch SW41 to the OFF state to generate the voltage signal S11 for generating the Coulomb force supplied from the signal generation unit 22a to the amplification unit 22b.
  • the first terminal P1 is applied to the electrode 14a via the selected switch SW32.
  • the electrode control unit 22 detects the position of the hand supplied from the signal generation unit 22a by, for example, turning off the switch SW1 for a certain period of time at regular intervals and turning the switch SW41 on.
  • Drive signal S12 is applied to the electrode array 14 via the amplification unit 22b and the switch SW32 that selects the first terminal P1.
  • the capacitance detected in the electrode array 14 changes via the conductor 121 of the operation knob 100, so that the electrode control unit 22 is near the operation knob 100. It is possible to detect that the user's hand is located at.
  • the electrode 14a is connected to the measuring instrument (for example, A / D converter) 45 via the switch SW42.
  • the measuring instrument 25 measures the capacitance detected at the electrode 14a based on the amount of electric charge accumulated at the electrode 14a by applying the drive signal S12 when the hand approaches the operation knob 100.
  • the electrode control unit 22 causes the measuring instrument 25 to measure the capacitance by, for example, turning off the switch SW1, the switch SW41 and the switch SW32 for a certain period of time at regular intervals and turning the switch SW42 into an ON state.
  • the touch panel device 40 detects a change in capacitance in the touch panel 11 when the user's hand H is located near the operation knob 100. explain. In FIGS. 17A and 17B, the user's hand H is separated from the operation knob 100, but the hand H is located near the operation knob 100.
  • FIG. 17C is a diagram showing the detection value of the capacitance detected by the touch panel 11 when the user's hand H is located near the operation knob 100, as shown in FIG. 17A.
  • FIG. 17 (D) is a plan view of the figure shown in FIG. 17 (C) as viewed from the + Z axis side.
  • the height of the square weight base 45 in the + Z axis direction shown in FIGS. 17 (C) and 17 (D) indicates the value of the capacitance at each point of the XY coordinates of the touch panel 11.
  • the contour lines 45a, 45b, and 45c of the square pyramid 45 in FIG. 17D indicate positions having the same capacitance. As shown in FIGS.
  • FIG. 18 is a flowchart showing the operation of the touch panel device 40.
  • step ST41 the control unit 50 starts a loop process that repeats the processes of steps ST42 to ST66 after activation.
  • the loop processing shown in steps ST41 to ST49 and steps ST51 to ST56 is a processing executed before the user touches the operation knob 100.
  • step ST42 the knob conductor position determination unit 21 determines the positions of the conductors 121, 122, 123 of the operation knob 100 based on the detected value of the change in capacitance on the touch panel 11.
  • step ST43 the proximity determination unit 43 detects the position information of the hand H based on the detected value of the change in capacitance obtained when the drive signal S12 is applied to the electrode array 14, and is near the touch panel 11. It is determined whether or not the user's hand H is located at.
  • step ST44 when the proximity determination unit 43 detects that the user's hand H is located near the touch panel 11 (that is, in the case of Yes in step ST44), the process proceeds to step ST45. If not (that is, No in step ST44), the proximity determination unit 43 advances the process to the end of the loop process shown in step ST41A.
  • step ST45 the proximity determination unit 43 notifies the detected position information of the hand H and stores it in a storage device (for example, the memory 51 shown in FIG. 5).
  • step ST46 the proximity determination unit 43 determines whether or not the user's hand H is located near the operation knob 100 based on the position information of the conductors 121, 122, 123 of the operation knob 100 and the position information of the hand H. Is determined.
  • step ST47 when the proximity determination unit 43 determines that the user's hand H is located near the operation knob 100 (that is, in the case of Yes in step ST47), the process proceeds to step ST51. If not, the proximity determination unit 43 advances the process to step ST48.
  • the electrode control unit 22 selects an electrode corresponding to the position information of the hand H from the plurality of electrodes 14a of the electrode array 14.
  • the electrode control unit 22 selects, for example, one or more electrodes arranged at positions facing the user's hand H from among the plurality of electrodes 14a.
  • step ST49 the electrode control unit 22 applies the first voltage signal S11a shown in FIG. 10A to the electrodes selected in step ST48.
  • step ST51 the control unit 50 executes a process of repeating the processes of steps ST52 to ST56.
  • the loop processing shown in steps ST51 to ST51A is a processing executed when the user's hand H is near the operation knob 100.
  • the processing of steps ST52 to ST54 ends when the process is executed a predetermined number of times.
  • step ST52 the knob conductor position determination unit 21 determines the positions of the conductors 121, 122, 123 of the operation knob 100 based on the detected value of the change in capacitance on the touch panel 11.
  • step ST53 the knob conductor position determination unit 21 puts the user's hand H on the operation knob 100 based on the positions of the conductors 121, 122, 123 of the operation knob 100 and the detected value of the change in capacitance on the touch panel 11. Determine if it was touched.
  • step ST54 when the user's hand H is touching the operation knob 100 (that is, in the case of Yes in step ST54), the knob conductor position determination unit 21 advances the process to step ST61. If not (that is, No in step ST54), the knob conductor position determination unit 21 advances the process to step ST55.
  • Steps ST55 to ST56 are the same as steps ST20 to ST21 shown in FIG.
  • step ST61 the control unit 50 starts a loop process that repeats the processes of steps ST62 to ST66.
  • the loop processing shown in steps ST61 to ST61A is a processing executed when the user's hand touches the operation knob 100.
  • step ST62 the knob conductor position determination unit 21 determines the positions of the conductors 121, 122, 123 of the operation knob 100 based on the detected value of the change in capacitance on the touch panel 11. Further, the knob conductor position determination unit 21 determines whether or not the operation knob 100 is moving based on the detected positions of the conductors 121, 122, 123 and the positions of the conductors 121, 122, 123 stored in the storage device. Is determined.
  • Steps ST63 to ST64 are the same as steps ST18 to ST19 shown in FIG.
  • step ST65 the knob conductor position determination unit 21 contacts the operation knob 100 with the user's hand H based on the positions of the conductors 121, 122, 123 of the operation knob 100 and the detected value of the change in capacitance. Judge whether or not.
  • step ST66 when the user's hand H is in contact with the operation knob 100 (that is, Yes in step ST66), the knob conductor position determination unit 21 advances the process to the end of the loop process shown in step ST61A. .. If not (that is, No in step ST66), the knob conductor position determination unit 21 advances the process to step ST41.
  • the electrode control unit 22 uses the electrode array. A voltage signal for generating Coulomb force is applied to. That is, the Coulomb force between the conductor 121 and the electrode array 14 can be generated from the time before the user's hand H comes into contact with the operation knob 100.
  • the fourth embodiment is the same as any one of the first to third embodiments.
  • Embodiment 5 >> In the first to fourth embodiments, an example in which a Coulomb force is generated between the conductors 121, 122, 123 and the electrode array 14 has been described. In the fifth embodiment, an example in which a suction cup that sticks to the surface 15a of the protective film 15 is attached to the operation knob 100 will be described.
  • the touch panel input system according to the fifth embodiment includes a touch panel device and an operation knob 500.
  • the functional block of the touch panel device according to the fifth embodiment is the same as that shown in FIG.
  • the hardware configuration of the touch panel device according to the fifth embodiment is the same as that shown in FIG. Therefore, in the following description of the fifth embodiment, reference will be made to FIGS. 4 and 5.
  • FIG. 19A is an exploded perspective view schematically showing the configuration of the operation knob 500 according to the fifth embodiment.
  • FIG. 19B is a bottom view schematically showing the configuration of the operation knob 500.
  • the same or corresponding components as those shown in FIGS. 2A and 2B have the same reference numerals as those shown in FIGS. 2A and 2B.
  • the code is shown. Note that in FIG. 19A, the support member 140 shown in FIG. 2A is not shown.
  • the operation knob 500 further includes a suction cup 551,552,553 and a fixing member 560 for fixing the suction cups 551,552,553. It is different from the operation knob 100 according to to 4.
  • the suction cups 551, 552, 553 are arranged inside the conductive portion 130.
  • the suction cups 551,552,553 are formed of an elastic body, for example, rubber.
  • Suckers 551,552,553 are arranged at a plurality of predetermined positions. As shown in FIG. 19B, it is desirable that the three suction cups 551,552,553 are arranged at the same distance from each other. That is, in the fifth embodiment, the distances between the two suction cups adjacent to each other among the three suction cups 551,552,553 are equal. In other words, the three suction cups 551,552,553 are arranged at the three apex positions of the equilateral triangle, respectively.
  • the number of suction cups is not limited to three, and may be two or less or four or more.
  • the fixing member 560 is arranged between the suction cups 551, 552, 553 and the conductive portion 130.
  • the fixing member 560 is composed of, for example, a cylindrical wall portion 560a.
  • step ST19 the electrode control unit 22 of the touch panel device is located at a position corresponding to the position of the suction cups 551,552,553 (for example, a position facing the suction cups 551,552,553) among the plurality of electrodes of the electrode array.
  • the first voltage signal S11a may be applied to the arranged electrodes.
  • a Coulomb force that attracts the operation knob 500 to the protective film can be generated between the suction cups 551, 552, 553 and the electrodes.
  • the static frictional force between the operation knob 500 and the touch panel can be further increased.
  • the electrode control unit 22 applies the first voltage signal S11a to the region corresponding to the center of the suction cups 551,552,553 in the electrode array, and then the outside of the suction cups 551,552,553 in the electrode array.
  • the process of applying the first voltage signal S11a to the region corresponding to the above may be performed.
  • it is possible to perform control such as removing air between the suction cups 551,552,553 and the protective film 15, and it is possible to strengthen the suction force of the suction cups 551,552,553.
  • the static frictional force between the operation knob 500 and the touch panel can be further increased.
  • the operation knob 500 has suction cups 551,552,553 that are attracted to the surface of the protective film, so that the static friction force between the operation knob 500 and the touch panel is applied. Can be further increased. Therefore, when the input operation using the operation knob 100 is performed, the occurrence of an erroneous operation due to the operation knob 100 moving on the touch panel 11 against the intention of the user is prevented.
  • the electrode control unit 22 applies a voltage signal to the electrodes arranged at positions facing the suction cups 550 of the operation knob 500 to form the conductors 121, 122, 123 and the electrodes.
  • a Coulomb force that attracts the operation knob to the protective film is also generated between the suction cups 551, 552, 553 and the electrodes.
  • the suction force of the suction cups 551, 552, 553 is increased, so that the static friction force between the operation knob 500 and the touch panel can be further increased.
  • Embodiment 6 In the first to fifth embodiments, an example in which the capacitance at the positions of the conductors 121, 122, 123 of the operation knobs 100, 500 is detected and a Coulomb force is generated between the conductors 121, 122, 123 and the electrode 14a. explained. Here, in order to secure a sufficiently large static friction force between the operation knobs 100, 500 and the touch panel 11, it is conceivable to increase the area of the contact surface of the conductors 121, 122, 123 with the touch panel 11.
  • the operation knob 600 Position detection accuracy may decrease.
  • an example of improving the position detection accuracy of the operation knob 600 while ensuring a sufficiently large static friction force between the operation knob 600 and the touch panel 11 will be described.
  • the touch panel input system according to the sixth embodiment includes a touch panel device and an operation knob 600.
  • the functional block of the touch panel device according to the sixth embodiment is the same as that shown in FIG.
  • the hardware configuration of the touch panel device according to the sixth embodiment is the same as that shown in FIG. Therefore, in the following description of the sixth embodiment, reference will be made to FIGS. 4 and 5.
  • FIG. 20A is a perspective view schematically showing the configuration of the operation knob 600 according to the sixth embodiment.
  • FIG. 20B is a bottom view schematically showing the configuration of the operation knob 600.
  • FIG. 20C is a side view schematically showing the internal structure of the operation knob 600.
  • the same or corresponding components as those shown in FIGS. 2A to 2C have the same reference numerals as those shown in FIGS. 2A to 2C. The code is shown.
  • the support member 140 shown in FIG. 2A is not shown.
  • the operation knob 600 has a tactile sensation presenting conductor portion 620 as a first conductor portion and a position detecting conductor portion 650 as a second conductor portion.
  • the tactile presentation conductor portion 620 is a conductor portion in which electric charges are accumulated when a voltage is applied to the electrode array of the touch panel.
  • the position detection conductor portion 650 is a conductor portion used for detecting the position of the operation knob 100, and is a conductor portion in which electric charges are not accumulated when a voltage signal is applied to the electrode array of the touch panel.
  • the tactile sensation presenting conductor portion 620 has a plurality of (three in the sixth embodiment) tactile sensation presenting conductors 621, 622, 623 as a plurality of first conductors.
  • the tactile conductors 621, 622, 623 are attached to the inside of the grip portion 110.
  • the tactile conductors 621, 622, 623 are, for example, columnar members.
  • the position detection conductor portion 650 has a plurality of position detection conductors 651, 652, 653 as a plurality of second conductors (three in the sixth embodiment).
  • the position detecting conductors 651, 652, 653 are attached to the inside of the grip portion 110.
  • the position detection conductors 651, 652, 653 are, for example, columnar members.
  • the position detection conductors 651,652,653 are formed of, for example, a metal material or a conductive resin material.
  • the position detection conductors 651, 652, 653 are conducting with each other.
  • the area of the lower surfaces 651a, 652a, 653a of the position detection conductors 651,652,653 is smaller than the area of the lower surfaces 621a, 622a, 623a of the tactile presentation conductors 621, 622, 623. That is, the contact area between the position detecting conductors 651,652,653 and the touch surface of the touch panel is smaller than the contact area between the tactile sensation presenting conductors 621, 622, 623 and the touch surface of the touch panel. Since the operation knob 600 has the position detection conductors 651,652,653, the area of the lower surface of the tactile presentation conductors 621, 622, 623 is set to the conductors 121, 122 of the operation knob 100 according to the first embodiment.
  • the contact area between the tactile sensation presenting conductors 621, 622, 623 and the protective film 15 can be increased, so that the static frictional force between the operation knob 600 and the touch panel 11 is increased. be able to.
  • the operation knob 600 since the operation knob 600 has the position detecting conductors 651,652,653, it is not necessary to bring the tactile sensation presenting conductors 621, 622, 623 into contact with the grip portion 110. That is, it is not necessary to conduct the tactile presentation conductors 621, 622, 623 with each other.
  • the three position detection conductors 651, 652, 653 are arranged at a plurality of predetermined positions.
  • the three position detection conductors 651, 652, 653 are arranged at three apex positions of an equilateral triangle, for example.
  • step ST13 the knob conductor position determination unit 21 satisfies the condition indicating that the position is the position of the tactile conductor 621, 622, 623 from the combination of all the touch information notified from the touch panel 11. It is determined whether or not there is a combination that satisfies the condition indicating that the position is the position of the position detection conductors 651,652,653. Further, in step ST15, the knob conductor position determination unit 21 determines the position of the operation knob 100 from the combination of touch information satisfying the condition indicating that the position is the position of the position detection conductors 651,652,653. Further, in steps ST18 to ST21, the electrode control unit 22 applies a voltage signal to a group of electrodes arranged at positions corresponding to the positions of the tactile sensation presenting conductors 621, 622, 623.
  • the knob conductor position determination unit 21 uses, for example, the operation knob 600 based on the correspondence between the positions of the position detection conductors 651,652,653 and the positions of the tactile conductors 621,622,623. You may detect the presence or absence of. For example, in the knob conductor position determination unit 21, each of the three position detection conductors 651,652,653 is outside the center of the operation knob 600 with respect to each of the three tactile conductors 621,622,623 ( Alternatively, the presence or absence of the operation knob 600 may be determined depending on whether or not it is arranged inside).
  • the knob conductor position determination unit 21 searches for the positions of the three position detection conductors 651,652,653 (that is, the three apex positions of the equilateral triangle described above), and the searched position detection The position of the tactile presentation conductors 621, 622, 623 may be estimated based on the positions of the conductors 651,652,653.
  • the operation knob 600 is used to detect the position of the operation knob 600 separately from the tactile presentation conductors 621, 622, 623 in which the electric charge that generates the Coulomb force is accumulated. It has 651,652,653 conductors for position detection used in the above. As a result, the areas of the lower surfaces 621a, 622a, and 623c of the tactile conductors 621, 622, 623 can be increased. Therefore, it is possible to improve the position detection accuracy of the operation knob 600 while ensuring a sufficiently large static friction force between the operation knob 600 and the touch panel 11.

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

Abstract

La présente invention concerne un dispositif à panneau tactile (10) comprenant : un panneau tactile (11) qui détecte la position d'un bouton d'actionnement (100), et qui comprend un film de protection (15) et une unité d'électrode (14) qui génère une force de Coulomb (Fc) par laquelle le bouton de commande (100), qui se déplace le long de la surface (15a) du film de protection (15), est tiré en direction du film de protection (15) ; et une unité de commande d'électrode (22) qui applique un signal de tension à l'unité d'électrode (14) et qui accumule la charge. Le présent système d'entrée de panneau tactile (1) comprend le dispositif à panneau tactile (10) susmentionné et le bouton d'actionnement (100) susmentionné.
PCT/JP2019/051240 2019-12-26 2019-12-26 Dispositif à panneau tactile, système d'entrée de panneau tactile, procédé de commande de dispositif à panneau tactile et programme WO2021130990A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020537802A JPWO2021130990A1 (ja) 2019-12-26 2019-12-26 タッチパネル装置、タッチパネル入力システム、タッチパネル装置の制御方法、及びプログラム
PCT/JP2019/051240 WO2021130990A1 (fr) 2019-12-26 2019-12-26 Dispositif à panneau tactile, système d'entrée de panneau tactile, procédé de commande de dispositif à panneau tactile et programme

Applications Claiming Priority (1)

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PCT/JP2019/051240 WO2021130990A1 (fr) 2019-12-26 2019-12-26 Dispositif à panneau tactile, système d'entrée de panneau tactile, procédé de commande de dispositif à panneau tactile et programme

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