JP2010085378A - Position detector for detecting indicated position of indicating tool using electromagnetic induction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a position detector easily enlarged at a low cost. <P>SOLUTION: This position detector comprises a plurality of first wires 10, a plurality of second wires 20, a detecting region 30, a driving section 40, a detecting section 50, and an insulating coating material 60. The plurality of first wires 10 constitute a driving loop wire group 11, and the plurality of second wires 20 constitute a detecting loop wire group 21. The detecting region 30 is constituted by alternately weaving the first wires 10 and second wires 20. The driving section 40 drives the driving loop wire group 11, and the detecting section 50 detects an indicated position of an indicating tool using a signal from the detection loop wire group 21 according to the indicating tool. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a position detection device that detects an indication position of an indicator using electromagnetic induction, and more particularly, to a position detection device in which a detection surface is configured by orthogonal loop wiring groups.

  In general, a position detection device using electromagnetic induction has a detection surface composed of a group of loop wires arranged in one direction and a group of loop wires arranged in a direction orthogonal thereto. Such a loop wiring group is generally formed on a printed circuit board. In such a position detection device, since the size of the detection surface depends on the size of the printed circuit board, there is a limit to the increase in the size of the detection surface due to restrictions on the production of the printed circuit board.

  As a position detection device capable of increasing the size of a detection surface without using a printed circuit board, for example, there is one disclosed in Patent Document 1. The detection surface of the position detection device disclosed in Patent Document 1 is configured by laminating two film sheets such as a polyimide film or a PET film having an aluminum loop wiring group formed on the surface so that the loop wiring groups are orthogonal to each other. Has been. In this position detection device, an anisotropic conductive adhesive film is used when laminating film sheets and when pulling out electrodes from the loop wiring group. The loop wiring group is formed by selectively etching after vacuum-depositing aluminum on the surface of the film sheet.

JP-A-3-41510

  However, the position detection device described in Patent Document 1 requires a film sheet for arranging the loop wiring group. Therefore, the position detection device described in Patent Document 1 is also dependent on the size of the film sheet, as with the position detection device using a printed circuit board. There was a limit to increasing the size of the detection surface. Furthermore, the position detection device described in Patent Document 1 needs to laminate and bond two film sheets using an anisotropic conductive adhesive film in the manufacturing process. In the process of forming the loop wiring group, it is necessary to vacuum deposit aluminum and remove unnecessary portions by etching. Thus, when manufacturing the position detection apparatus described in Patent Document 1, many processes are required. In addition, many relatively expensive anisotropic conductive adhesive films are used. Therefore, a position detection device having a large detection surface that can be easily manufactured at low cost has been desired.

  In view of such circumstances, the present invention is intended to provide a position detection device that can easily increase the size of a detection surface at low cost.

  In order to achieve the above-described object of the present invention, a position detection device according to the present invention includes a plurality of first wirings for forming a first-direction drive loop wiring group, and a second direction orthogonal to the first direction. A plurality of first wirings and / or a plurality of second wirings in order to insulate between the plurality of second wirings for constituting the detection loop wiring group and the plurality of first wirings and the plurality of second wirings, respectively. Insulation coating material provided in each of the above, a detection region configured by alternately weaving a plurality of first wires and a plurality of second wires, and a drive unit connected to the drive loop wire group and driving the drive loop wire group And a detection unit that is connected to the detection loop wiring group and detects a pointing position of the pointing tool using a signal from the detection loop wiring group corresponding to the pointing tool.

  Here, the detection region may be configured by weaving a plurality of first wirings and a plurality of second wirings in any one of plain weave, twill, plain tatami, or twill.

  Furthermore, for connecting the end portions of the plurality of first wires so as to constitute the drive loop wire group and / or for connecting the end portions of the plurality of second wires so as to constitute the detection loop wire group. A wiring connection substrate may be provided.

  Furthermore, you may provide the board | substrate for wiring extraction for connecting a drive part and / or a detection part to a drive loop wiring group and / or a detection loop wiring group, respectively.

  In addition, the detection unit detects the indication position of the indicator by detecting a change in the degree of electromagnetic coupling between the drive loop wiring group and the detection loop wiring group according to an instruction from the indicator having a conductor or a magnetic material. Anything to do.

  Furthermore, a conductor piece may be provided in the vicinity of each intersection of the drive loop wiring group and the detection loop wiring group.

  Here, the conductor piece is arranged to be movable in a third direction orthogonal to the first direction and the second direction, and the detection unit detects the drive loop wiring group corresponding to the movement of the conductor piece according to the instruction by the pointing tool. The pressing force of the pointing tool may also be detected by detecting a change in the degree of electromagnetic coupling with the loop wiring group.

  Further, a display device stacked in the detection region may be provided.

  The position detecting device according to the present invention for detecting the pointing position of the pointing tool having the oscillation circuit is orthogonal to the first direction and a plurality of first wirings for constituting the first detection loop wiring group in the first direction. In order to insulate each of the plurality of second wirings for forming the second detection loop wiring group in the second direction and the plurality of first wirings and the plurality of second wirings, Alternatively, an insulating coating provided on each of the plurality of second wirings, a detection region configured by alternately weaving the plurality of first wirings and the plurality of second wirings, and a first detection loop wiring group and a second detection loop A detection unit that is connected to the wiring group and detects a pointing position of the pointing tool using signals from the first detection loop wiring group and the second detection loop wiring group corresponding to the oscillation circuit included in the pointing tool. is there.

  Furthermore, a position detection device according to the present invention for detecting an indicator having a resonance circuit includes a plurality of first wirings for forming a first loop wiring group in a first direction, and a second direction orthogonal to the first direction. In order to insulate between the plurality of second wirings for forming the second loop wiring group and the plurality of first wirings and the plurality of second wirings, respectively, the plurality of first wirings and / or the plurality of second wirings. Insulation coating material provided on each wiring, a detection region configured by alternately weaving a plurality of first wirings and a plurality of second wirings, and driving the first loop wiring group connected to the first loop wiring group And a first drive detection unit for detecting a pointing position in the second direction of the pointing tool using a signal from the first loop wiring group corresponding to a resonance circuit included in the pointing tool, and a second loop wiring group, The second loop wiring group is driven and the indicator has It is intended to includes a second drive detection unit for detecting a first direction indication location of the pointing device by using the signal from the second loop wire group to respond to circuit.

  The position detection apparatus using electromagnetic induction according to the present invention has an advantage that the detection surface can be easily enlarged at a low cost.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram for explaining a position detection apparatus of the present invention. As shown in the figure, the position detection device of the present invention mainly includes a plurality of first wires 10, a plurality of second wires 20, a detection region 30, a drive unit 40, and a detection unit 50.

  The plurality of first wirings 10 are for configuring the drive loop wiring group 11 in the first direction. More specifically, the first wirings 10 are arranged in parallel in the first direction, that is, the X-axis direction, and one end portion of the first wirings 10 are connected two by two to drive loop wiring group 11. Loop-shaped wiring is formed. In the illustrated example, one end portions of the plurality of first wirings 10 are connected to each other using the first wiring connection substrate 70. The first wiring connection board 70 is made of a solderable board such as a printed board, and a wiring pattern is formed on the board so that the first wiring 10 becomes a predetermined loop wiring. The drive loop wiring group 11 is formed by soldering one end of the first wiring 10 to the connection land 7 provided at the end of the wiring pattern.

  In the illustrated example, a first wiring lead-out board 73 is connected to the other end of the plurality of first wirings 10. The first wiring lead-out substrate 73 is made of a solderable substrate such as a printed circuit board, and a wiring pattern for connecting the drive unit 40 to the plurality of first wirings 10 is formed on the substrate. Then, the other end of the first wiring 10 is soldered to the connection land 7 provided at the end of the wiring pattern.

  With this configuration, the drive loop wiring group 11 in the X-axis direction connected to the drive unit 40 is configured.

  The basic configuration of the plurality of second wirings 20 is the same as that of the first wirings 10. That is, the plurality of second wirings 20 are for configuring the detection loop wiring group 21 in the second direction. More specifically, the second wiring 20 is arranged in parallel to the second direction, that is, the Y-axis direction, and one end of the second wiring 20 is connected two by two to form the detection loop wiring group 21. A loop wiring is formed. In the illustrated example, one end of each of the plurality of second wirings 20 is connected using the second wiring connection substrate 71. The second wiring connection board 71 is made of a solderable board such as a printed board, and a wiring pattern is formed on the board so that the second wiring 20 becomes a predetermined loop wiring. The detection loop wiring group 21 is formed by soldering one end of the second wiring 20 to the connection land 7 provided at the end of the wiring pattern.

  In the illustrated example, a second wiring lead-out board 74 is connected to the other end of the plurality of second wirings 20. The second wiring lead-out board 74 is made of a solderable board such as a printed board, and a wiring pattern for connecting the detection unit 50 to the plurality of second wirings 20 is provided on the board. Then, the other end of the second wiring 20 is soldered to the connection land 7 provided at the end of the wiring pattern.

  With this configuration, the detection loop wiring group 21 in the Y-axis direction connected to the detection unit 50 is configured.

  In the above description, the example using the wiring connection board and the wiring drawing board has been described. However, the present invention is not limited to this, and the plurality of first wirings and the plurality of second wirings are respectively connected to the drive loops. Any configuration can be used as long as it can be configured in a loop shape so as to become a wiring group or a detection loop wiring group, and various configurations such as arranging the wiring itself in a loop shape are applicable. Further, these wiring connection boards and wiring lead-out boards are for connecting the wiring ends and do not limit the size of the detection area. Further, the number, pitch, loop width, and the like of the first wiring and the second wiring are not limited to those in the illustrated example, and can be variously changed according to the size of the detection area, the detection resolution, and the like. Furthermore, with respect to the drive loop wiring group and the detection loop wiring group, an example in which each loop wiring is arranged so as to overlap with some of the other loop wirings is shown, but the present invention is not limited to this, and the loop wiring It may be arranged so as not to overlap with a predetermined interval between them.

  Here, in the case of a loop wiring that overlaps the drive loop wiring group and the detection loop wiring group using a plurality of first wirings and second wirings arranged at equal intervals, as shown in FIG. Dummy wirings 12 and 22 that are not connected to the connection boards 70 and 71 and the wiring lead-out boards 73 and 74 exist. No connection lands are provided in the portions of the wiring connection substrates 70 and 71 and the wiring lead-out substrates 73 and 74 corresponding to the dummy wirings 12 and 22, and the dummy wirings are not soldered. Note that when a plurality of first wirings and second wirings are configured only by necessary wirings, dummy wirings are unnecessary.

  And in the position detection apparatus of this invention, the detection area | region 30 is comprised by weaving these several 1st wiring 10 and several 2nd wiring 20 alternately. As a weaving method, any weaving method may be used as long as each wiring crosses each other so that the wirings are not easily scattered. Hereinafter, a specific example of the weaving method will be described with reference to FIG. 2A and 2B are enlarged views for explaining the detection area of the position detection device of the present invention configured in plain weave, FIG. 2A is an enlarged plan view of the detection area, and FIG. 2B is a detection area. FIG. 2C is an enlarged vertical sectional view of the detection region. In the figure, the same reference numerals as those in FIG. 1 denote the same parts.

  As shown in the figure, the detection region 30 of the position detection device of the present invention is woven with the first wiring 10 and the second wiring 20 being alternately raised and lowered at regular intervals. This is a so-called plain weaving method. In the position detection apparatus of the present invention, since the first wiring 10 and the second wiring 20 are woven in this manner, the detection area can be configured only by the wiring, so that a substrate, a film sheet, or the like is not necessary. Therefore, since the detection region of the position detection device of the present invention does not require a base material for arranging wiring, in principle, the detection region can be enlarged without limitation. Moreover, since a base material is not required, the cost is low.

  Here, the position detection device of the present invention detects the pointing position of the pointing tool using electromagnetic induction, but electromagnetic induction (electromagnetic coupling) occurs near the intersection of each loop wiring. When the first wiring and the second wiring are woven by plain weaving, the distances between the intersections of the vertical and horizontal wirings become equal, and the electromagnetic coupling portions are accurately arranged in a matrix on the detection region. Therefore, it is possible to detect the exact pointing position of the pointing tool.

  Further, the weaving method of the first wiring and the second wiring is not limited to the plain weaving, and may be various weaving methods such as a twill weave, a plain tatami mat, a twill mat weave as described below.

  FIGS. 3A and 3B are enlarged views for explaining the detection region of the position detection device of the present invention made of twill, FIG. 3A is an enlarged plan view of the detection region, and FIG. 3B is the detection region. FIG. 3C is an enlarged longitudinal sectional view of the detection region. In the figure, the same reference numerals as those in FIG. 1 denote the same parts. As shown in the figure, in the twill weave, the first wiring 10 and the second wiring 20 are woven by being lifted and sinking alternately two by two while maintaining a certain interval. For example, when thick wirings are used for the first wiring 10 and the second wiring 20, the wiring bend is reduced, so that a twill weave may be applied.

  FIG. 4 is an enlarged view for explaining the detection region of the position detection device of the present invention configured by plain woven, FIG. 4A is an enlarged plan view of the detection region, and FIG. FIG. 4C is an enlarged vertical sectional view of the detection region. In the figure, the same reference numerals as those in FIG. 1 denote the same parts. As shown in the figure, in the flat woven weave, the first wirings 10 are arranged so as to be in contact with each other, and the second wirings 20 arranged at a constant interval are alternately floated and woven. Since the strength increases when woven in this way, for example, when a certain level of strength is required for the detection region 30, a plain woven fabric may be applied.

  Further, FIG. 5 is an enlarged view for explaining the detection region of the position detection device of the present invention made of plain twill, FIG. 5 (a) is an enlarged plan view of the detection region, and FIG. 5 (b). Is an enlarged cross-sectional view of the detection region, and FIG. 5C is an enlarged vertical cross-sectional view of the detection region. In the figure, the same reference numerals as those in FIG. 1 denote the same parts. As shown in the figure, in the flat twill weave, the first wirings 10 are arranged so as to be in contact with each other, and the second wirings 20 arranged so as to be kept at a predetermined interval are alternately climbed and woven up and down. . When weaving in this way, the smoothness of the weave becomes high. For example, when it is desired to increase the smoothness of the detection region 30, a plain twill may be applied.

  In addition, in order to weave the 1st wiring and the 2nd wiring with these various weaving methods, it is possible to use an existing wire mesh manufacturing machine or the like. Weave the first wiring and the second wiring with a wire mesh manufacturing machine, then cut the end and solder the end using a wiring connection board or wiring drawing board to make a looped wiring Just do it. In this case, if necessary, some of the wirings may be dummy wirings as described above, so that loop wirings having the same loop width and the same pitch can be configured. Therefore, if a wire mesh manufacturing machine is used, a huge detection area can be easily manufactured at low cost.

  Here, the first wiring and the second wiring may be conductive lines. For example, it is possible to use a tin-plated copper wire that can be easily connected to the wiring connection board or the wiring drawing board by soldering and is inexpensive.

  In the position detection device according to the present invention, the first wiring and the second wiring are in contact with each other because they are woven together, so that an insulating coating material 60 is provided on each wiring so as not to cause a short circuit therebetween. Yes. Therefore, as the first wiring and the second wiring, it is only necessary to use an insulating wire whose central portion is a conductor and whose periphery is covered with an insulator. In the case of a weaving method in which the first wiring or the second wiring is not in contact, such as plain weave or twill weave, it is only necessary that the insulating coating material is provided on only one of the first wiring and the second wiring. The insulating coating material may be any material that can insulate the wirings, such as polyvinyl chloride and polyurethane.

  Now, a case where the pointing position of the pointing tool having a magnetic body or a conductor is detected using the position detecting apparatus of the present invention configured as described above will be described with reference to FIG. FIG. 6 is a schematic block diagram for explaining the configuration of the position detection apparatus of the present invention in the case where the pointing position of the pointing tool having a magnetic body or a conductor is detected. In the figure, the same reference numerals as those in FIG. 1 denote the same parts.

  When the pointing position of the pointing tool having a magnetic body or a conductor is detected using electromagnetic induction, the drive unit 40 and the detection unit 50 are configured as follows. That is, the drive unit 40 is mainly composed of an oscillator 41 and a switch 42, and the switch 41 is used to sequentially connect the oscillator 41 to each loop wiring of the drive loop wiring group 11 constituting the detection region 30. The drive loop wiring group 11 is driven at a high frequency while being connected. On the other hand, the detection unit 50 is mainly composed of a switch 51, an amplifier 52, and a synchronous detection unit 53. The detection unit 50 is connected to each loop wiring of the detection loop wiring group 21 in order and detected. The induction current (induction voltage) is sequentially detected from the loop wiring group 21. Further, the output from the oscillator 41 is also connected to the synchronous detection unit 53, and the product of the output from the oscillator 41 and the output from the detection loop wiring group 21 is taken, and this is integrated over time. A detection circuit may be separately provided for each loop wiring of the detection loop wiring group, or a frequency filter circuit or the like may be combined to detect from all the loop wirings of the detection loop wiring group at a time. .

  The drive unit 40 and the detection unit 50 are controlled by a microprocessor 45 and configured to obtain a desired output. Specifically, first, the oscillator 41 is connected to the first loop wiring of the drive loop wiring group 11, the amplifier 52 is sequentially connected to the loop wiring of the detection loop wiring group 21, and the output signal at that time is measured. The oscillator 41 is connected to the second loop wiring of the drive loop wiring group 11, and the amplifier 52 is sequentially connected to the loop wiring of the detection loop wiring group 21, and the output signal at that time is measured. By repeating this, it is possible to measure output signals at all positions where the intersections of the respective loop wirings of the drive loop wiring group 11 and the detection loop wiring group 21 in the detection region 30 are XY coordinates.

  In the position detection device having such a configuration, the method of detecting the pointing position of the pointing tool is the same as the method of the position detection device using electromagnetic coupling that has been filed by the inventors of the present application. Specifically, in a state in which the pointing tool is not input on the detection region 30, the drive loop wiring group 11 and the detection loop wiring group 21 are linearly orthogonal and thus do not perform electromagnetic coupling, and the drive loop wiring group 11, no induced current is output from the detection loop wiring group 21. For example, when the pointing tool is made of a magnetic material, when the pointing tool is input on the detection region 30, the pointing position of the pointing tool among the intersections of the respective loop wirings of the drive loop wiring group 11 and the detection loop wiring group 21. The electromagnetic coupling degree changes due to the change of the magnetic field at the nearby intersection, and the induction current is output from the detection loop wiring group 21. Therefore, the detection unit 50 can detect the indicated position coordinates of the pointing tool placed on the detection region 30 by detecting the XY coordinates from which the output of the induced current based on the change in the degree of electromagnetic coupling is obtained. Is possible.

  Further, for example, when the pointing tool is made of a conductor, when this is input on the detection area 30, the pointing tool of the intersection of the loop wirings of the drive loop wiring group 11 and the detection loop wiring group 21 The electromagnetic coupling degree changes due to the eddy current at the intersection near the indicated position, and an induction current is output from the detection loop wiring group 20. Therefore, the detection unit 50 similarly detects the indicated position coordinates of the pointing tool placed on the detection region 30 by detecting the XY coordinates from which the output of the induced current based on the change in the degree of electromagnetic coupling is obtained. be able to.

  As described above, the position detection device of the present invention can detect and detect the drive loop wiring group according to the instruction from the pointing tool even if the detection region is configured by weaving the first wiring and the second wiring alternately. By detecting a change in the degree of electromagnetic coupling with the loop wiring group, it is possible to detect the pointing position of the pointing tool. In the above example, the pointing position detection of the pointing tool made of a magnetic material or a conductor has been described. However, the present invention is not limited to this, and the shape of the conductor or the magnetic material, the distance to the detection region, or the like is detected. It is also possible.

  In the position detection device of the present invention, a display device such as a liquid crystal display device or a projector screen may be stacked in the detection region. For example, the first wiring or the second wiring can be configured as an extremely fine wiring or a transparent conductive wiring so as not to disturb the display of the display device. With this configuration, a touch panel liquid crystal display device or the like can be realized. Since the size of the detection region of the position detection device of the present invention is not limited, even a very large display device can be applied.

  Furthermore, the position detection device of the present invention may be one in which a conductor piece is provided in the vicinity of the intersection of each loop wiring of the drive loop wiring group and the detection loop wiring group and is electromagnetically coupled in advance. FIG. 7 is a schematic top view of a detection region for explaining an example in which the position detection device of the present invention is configured to be electromagnetically coupled in advance using a conductor piece. As shown in the drawing, a conductor piece 80 is provided in the vicinity of the intersection of each loop wiring of the drive loop wiring group 11 and the detection loop wiring group 21 constituting the detection region 30, and the intersection is configured to be electromagnetically coupled. In the case of the position detecting device configured as described above, the induced current to be measured increases when the indicator having the magnetic material is placed on the detection surface. As in the example, it is possible to detect the pointing position coordinates of the pointing tool. The intersecting portions of the loop wirings may be formed in an arch shape so as to form coils, and the intersections may be electromagnetically coupled.

  Furthermore, the position detection device of the present invention can be configured such that the pressing force of the pointing tool can be detected by disposing the above-described conductor piece so as to be movable. FIG. 8 is a schematic top view of a detection region for explaining an example in which a conductor piece is movably provided in the position detection apparatus of the present invention. As shown in the figure, the conductor piece 80 provided in the vicinity of the intersection of each loop wiring of the drive loop wiring group 11 and the detection loop wiring group 21 constituting the detection area 30 is in a direction perpendicular to each wiring, that is, the surface of the detection area. It is arranged to be movable in the direction perpendicular to In the illustrated example, specifically, the conductor piece 80 is configured to be movable by providing an elastic body 90 between the drive loop wiring group 11 and the detection loop wiring group 21 and the conductor piece 80. When the indicator presses the conductor piece 80, the conductor piece 80 is pushed down to each loop wiring side, so that the electromagnetic coupling degree changes due to the change in the distance. Therefore, it is possible to detect the indicated position coordinates of the pointing tool by detecting the change in the induced current due to the change in the degree of electromagnetic coupling. Further, since the degree of electromagnetic coupling changes according to the distance between the conductor piece 80 and each loop wiring, not only the indication position of the indication tool but also the pressing force of the indication tool can be detected. Furthermore, the pointing position can be detected even when the pointing tool is not a magnetic body or a conductor but a finger or the like.

  Note that the position detection device of the present invention can be applied even if the pointing device has an oscillation circuit in addition to a magnetic material or a conductor or a finger as described above. When the pointing position of the pointing tool having the oscillation circuit is detected, the detection unit 50 is configured to be connected instead of the driving unit 40 in FIG. That is, all the wiring groups constituting the detection region 30 are configured to be connected to the detection unit 50. Other configurations are basically the same as the above-described example. When configured in this way, the plurality of first wires 10 constitutes a first detection loop wire group in the X-axis direction, and the plurality of second wires 20 constitutes a second detection loop wire group in the Y-axis direction. Will be. When an indicator having a transmitter circuit is detected, an induced current is generated from the loop wiring in the vicinity of the indicator in response to electromagnetic induction by a radio wave transmitted from the transmitter circuit of the indicator input on the detection area 30. The pointing position of the pointing tool can be detected from the loop wiring arrangement position of each detection loop wiring group in which the output signal has changed.

  The position detection device of the present invention can also be applied to a device that detects an indicator having a resonance circuit. In this case, it replaces with the drive part 40 and the detection part 50 of FIG. 1, and it comprises so that a drive detection part (a 1st drive detection part and a 2nd drive detection part) may be connected to each. Other configurations are basically the same as the above-described example. When configured in this way, the plurality of first wirings 10 form a first loop wiring group in the X-axis direction, and the plurality of second wirings 20 form a second loop wiring group in the Y-axis direction. It becomes. When detecting an indicator having a resonance circuit, the drive detector sequentially drives each loop wiring of the first loop wiring group and the second loop wiring group. The resonance circuit of the pointing device input on the detection region 30 is excited by the loop wiring, and an induced current is generated in the resonance circuit. After that, when driving of the loop wiring by the drive detection unit is stopped, the loop wiring is excited by the coil of the resonance circuit, and an induced current is generated from the loop wiring in the vicinity of the indicator, so this output signal is detected by each drive detection unit. . Therefore, the indication position of the pointing tool can be detected from the arrangement position of the loop wiring of each loop wiring group in which the output signal has changed. That is, the pointing position of the pointing tool in the Y-axis direction can be detected using the signal from the first loop wiring group, and the pointing position of the pointing tool in the X-axis direction can be detected using the signal from the second loop wiring group. Can be detected.

  As described above, the position detection device of the present invention is particularly characterized by the structure of the wiring that constitutes the detection region, and the techniques for indicating position detection and pressure distribution detection have been developed in the past or in the future. Applicable to any technique to obtain.

  Note that the position detection device of the present invention is not limited to the illustrated examples described above, and it is needless to say that various changes can be made without departing from the scope of the present invention.

FIG. 1 is a schematic configuration diagram for explaining a position detection apparatus of the present invention. FIG. 2 is an enlarged view for explaining that the detection region of the position detection device of the present invention is constituted by plain weave. FIG. 3 is an enlarged view for explaining the detection region of the position detection device according to the present invention formed of twill. FIG. 4 is an enlarged view for explaining that the detection region of the position detection device of the present invention is composed of plain woven fabric. FIG. 5 is an enlarged view for explaining that the detection region of the position detection device of the present invention is composed of plain twill. FIG. 6 is a schematic block diagram for explaining the configuration of the position detection apparatus of the present invention in the case where the pointing position of the pointing tool having a magnetic body or a conductor is detected. FIG. 7 is a schematic top view of a detection region for explaining an example in which the position detection device of the present invention is configured to be electromagnetically coupled in advance using a conductor piece. FIG. 8 is a schematic top view of a detection region for explaining an example in which a conductor piece is movably provided in the position detection apparatus of the present invention.

Explanation of symbols

7 Connection Land 10 First Wiring 11 Drive Loop Wiring Group 12 Dummy Wiring 20 Second Wiring 21 Detection Loop Wiring Group 22 Dummy Wiring 30 Detection Area 40 Drive Unit 41 Oscillator 42 Switch 45 Microprocessor 50 Detection Unit 51 Switch 52 Amplifier 53 Synchronous detection unit 60 Insulation coating material 70 First wiring connection substrate 71 Second wiring connection substrate 73 First wiring extraction substrate 74 Second wiring extraction substrate 80 Conductor piece 90 Elastic body

Claims (10)

A position detection device that detects the indicated position of the pointing tool using electromagnetic induction, the position detection device,
A plurality of first wirings for constituting a driving loop wiring group in the first direction;
A plurality of second wirings for constituting a detection loop wiring group in a second direction orthogonal to the first direction;
Insulating covering material provided on each of the plurality of first wirings and / or the plurality of second wirings to insulate the plurality of first wirings from the plurality of second wirings, respectively.
A detection region configured by alternately weaving the plurality of first wires and the plurality of second wires;
A drive unit connected to the drive loop wiring group and driving the drive loop wiring group;
A detection unit that is connected to the detection loop wiring group and detects a pointing position of the pointing tool using a signal from the detection loop wiring group corresponding to the pointing tool;
A position detection apparatus comprising:   2. The position detection device according to claim 1, wherein the detection region is configured by weaving the plurality of first wirings and the plurality of second wirings with any one of a plain weave, a twill weave, a plain tatami mat, and a twill mat. A position detecting device characterized by that.   3. The position detection device according to claim 1, further comprising connecting end portions of the plurality of first wirings so as to constitute the drive loop wiring group and / or the detection loop. 4. A position detection device comprising a wiring connection substrate for connecting ends of the plurality of second wirings so as to form a wiring group.   The position detection device according to any one of claims 1 to 3, wherein the drive unit and / or the detection unit are connected to a drive loop wiring group and / or a detection loop wiring group, respectively. A position detecting device comprising a wiring drawing substrate.   5. The position detection device according to claim 1, wherein the detection unit is provided between the drive loop wiring group and the detection loop wiring group in response to an instruction by an indicator having a conductor or a magnetic body. A position detection device that detects a pointing position of a pointing tool by detecting a change in the degree of electromagnetic coupling.   6. The position detecting device according to claim 1, further comprising a conductor piece in the vicinity of each intersection of the drive loop wiring group and the detection loop wiring group. Detection device.   The position detection device according to claim 6, wherein the conductor piece is disposed so as to be movable in a third direction orthogonal to the first direction and the second direction, and the detection unit responds to an instruction from an indicator. A position detecting device that detects a pressing force of an indicator by detecting a change in the degree of electromagnetic coupling between the drive loop wiring group and the detection loop wiring group corresponding to the movement of a piece.   The position detection apparatus according to claim 1, further comprising a display device stacked in the detection area. A position detection device that detects an indication position of an indicator having an oscillation circuit using electromagnetic induction, the position detection device,
A plurality of first wirings for constituting a first detection loop wiring group in the first direction;
A plurality of second wirings for configuring a second detection loop wiring group in a second direction orthogonal to the first direction;
Insulating covering material provided on each of the plurality of first wirings and / or the plurality of second wirings to insulate the plurality of first wirings from the plurality of second wirings, respectively.
A detection region configured by alternately weaving the plurality of first wires and the plurality of second wires;
The pointing position of the pointing tool using signals from the first detecting loop wiring group and the second detecting loop wiring group that are connected to the first detection loop wiring group and the second detection loop wiring group and correspond to an oscillation circuit included in the pointing tool. A detection unit for detecting
A position detection apparatus comprising: A position detection device that detects an indication position of an indication tool having a resonance circuit using electromagnetic induction, the position detection device,
A plurality of first wirings for constituting a first loop wiring group in a first direction;
A plurality of second wirings for forming a second loop wiring group in a second direction orthogonal to the first direction;
Insulating covering material provided on each of the plurality of first wirings and / or the plurality of second wirings to insulate the plurality of first wirings from the plurality of second wirings, respectively.
A detection region configured by alternately weaving the plurality of first wires and the plurality of second wires;
Connected to the first loop wiring group, drives the first loop wiring group, and detects a pointing position in the second direction of the pointing tool using a signal from the first loop wiring group corresponding to a resonance circuit included in the pointing tool. A first drive detector that
Connected to the second loop wiring group, drives the second loop wiring group, and detects the pointing position of the pointing tool in the first direction using a signal from the second loop wiring group corresponding to the resonance circuit included in the pointing tool. A second drive detector that
A position detection apparatus comprising: