JP6893596B2 - Position detection unit - Google Patents

Description

The present invention relates to, for example, a position detection unit that can be used in a terminal device having a display surface on which a touch panel is superimposed.

A terminal device having a display surface on which a touch panel is superimposed is often used as a means by which a user can easily process information corresponding to the display position by designating a specific display position on the display surface. ..

Conventionally, in this type of terminal device, a parallel resonant circuit, a magnetic material, or the like is built in a large number of loop coils provided on the display surface as a detection means for detecting a position specified by the user on the tablet display surface. A position detection unit of an electromagnetic induction method has been proposed in which a position designating member is brought close to a display surface to detect the close coordinate positions as a user's designated position (Patent Document 1).

Japanese Unexamined Patent Publication No. 07-044304

However, in the conventional configuration described in Patent Document 1, loop coils formed of conductors parallel to each other are arranged so as to overlap each other. Therefore, in order to realize such an arrangement, as an example, it is necessary to use a double-sided wiring printed circuit board provided with through holes, and there are various restrictions in configuring the position detection unit. ..

Therefore, various embodiments of the present invention provide a more flexible position detection unit.

The position detection unit according to the embodiment of the present invention includes "an XY coordinate forming unit having a configuration in which an X-axis line body composed of a plurality of lines and a Y-axis line body composed of a plurality of lines intersect each other, and the plurality of XY coordinate forming units. Y
A drive signal input unit provided on one end side of the axis body and inputting a drive input signal to one end side of the plurality of Y axis bodies, and a position specifying tool provided on one end side of the plurality of X axis bodies. A position detection unit including a position detection signal output unit that outputs a position detection signal corresponding to the specified coordinate position when the XY coordinate position of the coordinate formation unit is specified, and the plurality of Y-axis lines are One end is connected to the drive signal input unit, the other end is short-circuited, and the drive signal input unit selects at least two Y-axis wire bodies forming an input loop coil from the plurality of Y-axis wire bodies.
It is characterized in that it includes an axis line body selection unit.

A terminal device according to an embodiment of the present invention includes "a position detection unit according to the above item and a central processing unit that processes information based on a position detection signal output from the position detection unit". It is characterized by that.

Various embodiments of the present invention provide a more flexible position detection unit.

FIG. 1 is a schematic view of a terminal device 1 according to the first embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the terminal device 1 of FIG. FIG. 3 is an electrical connection diagram showing a detailed configuration of the position detection unit 10 of FIG. FIG. 4 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 16. FIG. 5 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 16. FIG. 6 is a conceptual diagram of an input loop coil formed by the position detection unit 10 of FIG. FIG. 7 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 16. FIG. 8 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 16. FIG. 9 is a processing flow diagram when a plurality of switch management tables are used. FIG. 10 is a diagram showing a specific structure of the Y-axis portion 12 constituting the XY coordinate forming portion according to the first embodiment. FIG. 11A is a diagram schematically showing an end portion of a conventional Y-axis portion. FIG. 11B is a diagram schematically showing a partial cross section of the end portion of the conventional Y-axis portion. FIG. 12 is a diagram schematically showing the structure of the end portion of the Y-axis line body constituting the Y-axis line portion according to the first embodiment. FIG. 13 is a block diagram showing the configuration of the terminal device 100 according to the second embodiment. FIG. 14 is an electrical connection diagram showing a detailed configuration of the position detection unit 110 of FIG. FIG. 15 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 116. FIG. 16 is a conceptual diagram showing a switch management table provided in the designated position detection control unit 116. FIG. 17 is a conceptual diagram of an input loop coil formed by the position detection unit 110 of FIG. FIG. 18 is a conceptual diagram of the X and Y axes formed by the position detection unit 110 of FIG. FIG. 19 is a diagram showing a specific structure of the Y-axis portion 112 constituting the XY coordinate forming portion according to the second embodiment. FIG. 20 is a diagram showing a specific structure of the Y-axis portion 112 constituting the XY coordinate forming portion according to the second embodiment. FIG. 20 is a diagram showing a specific structure of the X-axis line portion 111 and the Y-axis line portion 112 constituting the XY coordinate forming portion according to the second embodiment. FIG. 22 is a block diagram showing the configuration of the terminal device 200 according to the third embodiment of the present invention. FIG. 23 is an electrical connection diagram showing a detailed configuration of the position detection unit 210 of FIG. 22. FIG. 24 is a conceptual diagram of the X and Y axes formed by the position detection unit 210 of FIG. 22. FIG. 25 is a diagram showing a specific structure of the Y-axis portion 212 constituting the XY coordinate forming portion according to the third embodiment.

An embodiment of the present invention will be described with reference to the accompanying drawings. The common components in the drawings are designated by the same reference numerals.

<Outline of the first embodiment of the present invention>
Hereinafter, as the terminal device according to the first embodiment of the present invention, the terminal device 1 having a display surface on which the position designation detection device according to the present embodiment is superimposed will be described. In the present embodiment, a smartphone will be described as an example of the terminal device 1, but the present invention is not limited to this.
Examples of terminal devices include tablet-type mobile terminals, mobile phones, PDAs, portable game machines, laptop personal computers, desktop personal computers, and various business terminals (registers, ATs).
M terminals, ticket vending machines, etc.), handwritten signature authentication terminals, large display devices for electronic advertisements, and the like. Further, in the present embodiment, the terminal device in which the position detection unit 10 is superposed on the position detection unit display unit 30 will be described, but the present invention is not limited to this. For example, the position detection unit 10 according to the present embodiment can be applied to a terminal device such as a digitizer dedicated tablet that is not provided with a display unit 30 or is used by connecting to a separately provided display unit. It is possible.

FIG. 1 is a schematic view of a terminal device 1 according to the first embodiment of the present invention. According to FIG. 1, the terminal device 1 according to the present embodiment includes at least a position detection unit 10 and a display unit 30.
More specifically, the configuration of the position detection unit 10 and the display unit 30 will be described as the display unit 3.
The Y-axis portion 12 arranged on the 0, the insulating layer portion 13 arranged on the Y-axis portion 12, the X-axis portion 11 arranged on the insulating layer portion 13, the display unit 30, and the position. It includes a protective layer portion 31 that covers the detection unit 10. Then, the Y-axis portion 12, the insulating layer portion 13, and the X-axis portion 11 to XY
A coordinate forming unit is formed, and a user's contact and proximity operation position is detected as an XY coordinate position on the operation display surface of the protection layer unit 31.

In the present embodiment, the user can read the information display projected on the display unit 30 from the protective layer unit 31 side and specify the information display material by the position specifying tool 2 having a pen shape in which the user holds the specific information display material. Has been done.

In the present embodiment, the XY coordinate forming unit constituting the position detection unit 10 is configured by a transparent electrode or the like in order to explain an example in which the XY coordinate forming unit is provided so as to be superimposed on the upper surface of the display unit 30. However, as a matter of course, the position detection unit 10 according to the present embodiment can be realized as an embedded touch sensor in which the XY coordinate forming unit constituting the position detection unit 10 is provided on the lower surface of the display unit 30. Further, the position detection unit 10 is a terminal device such as a digitizer dedicated tablet that is not provided with a display unit 30 or is used by connecting to a separately provided display unit, or a terminal device such as an electronic blackboard. It can also be applied to. In such a case, the XY coordinate forming unit constituting the position detection unit 10 does not necessarily have to be formed by a transparent electrode or the like.

Further, in the present embodiment, a stylus pen having a pen shape will be described as the position specifying tool 2. However, the position designation tool 2 may be any as long as the designated XY coordinate position can be detected by the position detection unit 10 according to the present embodiment, and the pen shape is not limited, and of course, the stylus pen. Is not limited to.

FIG. 2 is a block diagram showing a configuration of a terminal device 1 according to the first embodiment of the present invention. According to FIG. 2, the terminal device 1 according to the present embodiment includes at least a position detection unit 10, a central processing unit 20, and a display unit 30 as its components. Also, if necessary
A storage unit consisting of ROM, RAM, non-volatile memory, etc., an antenna and wireless communication processing unit for wirelessly connecting to a remotely installed terminal, and various connector units for preferential connection with other terminals. Have. That is, FIG. 2 shows the configuration of the terminal device 1 according to the first embodiment of the present invention, but the terminal device 1 does not need to include all of the components shown here, and a configuration in which some of the components are omitted is used. It is also possible to take. Further, the terminal device 1 may include components other than those shown here.

The position detection unit 10 is arranged on the upper surface of the display unit 30, and has a Y-axis unit 12 and an X-axis unit 1.
1 and the insulating layer portion 13 are included. A known substrate material can be used for the insulating layer portion 13, but in the present embodiment, since it is not necessary to use a double-sided wiring printed circuit board provided with through holes, polyethylene terephthalate (PET) or Polycarbonate (
It can also be composed of a transparent film material such as PC). The details of the position detection unit 10 including the X-axis line portion 11 and the Y-axis line portion 12 will be described later.

The central processing unit 20 exchanges the information display signal S1 with the display unit 30. Also,
In the central processing unit 20, the position user sets a specific position on the XY display surface of the display unit 30 on the display unit 3.
When the position designation tool 2 having a pen shape is brought into contact with or close to the display surface of 0 (this is called a "pen touch operation"), the display position detection signal S2 indicating the designated position is designated as the designated position. Received from the detection control unit 16. As a result, the central processing unit 20 processes various information.

The display unit 30 displays information based on the information display signal S1 generated by the central processing unit 20 based on the image information stored in the storage unit (not shown), for example. As an example, the display unit 30 is composed of a liquid crystal display, and has a protective layer 31 on the outermost surface with the position detection unit 10 interposed therebetween. The protective layer 31 is made of glass, for example.

<Position detection unit 10>
In the present embodiment, the position detection unit 10 includes a designated position detection control unit 16, an XY coordinate forming unit composed of an X-axis unit 11, a Y-axis unit 12, and an insulating layer 13, and a drive signal output unit 14.
And the position detection signal output unit 15.

[1. Designated position detection control unit 16]
The designated position detection control unit 16 controls the entire operation of the position detection unit 10 in cooperation with the central processing unit 20. More specifically, the designated position detection control unit 16 supplies the switching signal S10 to the drive signal input unit 14 and the position detection signal output unit 16, and the first signal input switch arranged in the drive signal input unit 14. It controls the on / off operation of the 51Y and the second signal input switch 52Y and the on / off operation of the third signal input switch 61X and the fourth signal input switch 62X. Further, the designated position detection control unit 16 receives the designated position detection signal S14 from the position detection signal output unit 15 and provides it to the central processing unit 20 as the designated position detection signal S2.

Further, in the designated position detection control unit 16, the Y-axis wire bodies Y1 ... Y constituting the Y-axis wire body 12 are included.
The first and second input signal switches 51Y and 52Y connected to M, and the third and fourth input signal switches 61X and 62 connected to the X-axis wire bodies X1 ... XN constituting the X-axis line portion 11.
It is provided with a switch management table (FIG. 4) that controls the on / off operation of X and generates a switching signal S10 for selecting each axis used for forming the loop coil. Then, the designated position detection control unit 16 generates a switching signal S10 based on the switch management table.
The first and second input signal switches 51Y and 52Y and the third and fourth input signal switches 6
It controls the on / off operation of each switch of 1X and 62X.

[2. X-axis part 11 and Y-axis part 12]
The X-axis line portion 11 and the Y-axis line portion 12 form an XY coordinate forming portion together with the insulating layer portion 13.
Of the XY coordinate forming portions, the X-axis line portion 11 extends linearly in the Y-axis direction of the XY coordinate plane and is arranged parallel to each other at equal intervals in the X-axis direction, as shown in FIG. It has N (for example, 32) linear X-axis bodies X1 ... XN.

Further, one end of each X-axis body X1 ... XN is a third and fourth signal input switch 61X,
It is connected to 62X, the other end is short-circuited to the common signal line 67, and the other ends of the X-axis lines are connected to each other.

Then, the X-axis wire bodies X1 ... XN form an output loop coil by selecting at least two X-axis wire bodies according to the control of the designated position detection control unit 16.

On the other hand, the Y-axis line portion 12 is a plurality of M (for example, 20) straight lines extending linearly in the X-axis direction of the XY coordinate plane and arranged in parallel with each other at equal intervals in the X-axis direction. It has a Y-axis body Y1 ... YM in the shape of a shape.

Further, one end of each Y-axis body Y1 ... YM is a first and second signal input switch 51Y,
It is connected to 52Y, the other end is short-circuited to the common signal line 57, and the other ends of the Y-axis lines are connected to each other.

Then, the Y-axis lines Y1 ... YM form an input loop coil by selecting at least two Y-axis lines according to the control of the designated position detection control unit 16.

In this way, the X-axis body X1 ...
-XN and Y-axis bodies Y1 ... YM are alternately intersected so as to be orthogonal to each other. Then, the stacked X-axis line portions 11 and Y-axis line portions 12 serve as XY coordinate positions on the display surface of the display unit 30, that is, the operation display surface of the protective layer unit 31, X-axis lines X1 ... XN and The coordinate position can be specified by the intersection of the Y-axis lines Y1 ... YM.

More specifically, when the position specifier 2 specifies the XY coordinate position of the XY coordinate forming unit, the input is input from the input loop coil formed by at least two Y axis lines selected by the drive signal input unit 14. The input signal is sent to the position detection signal output unit 1 via the position designation tool 2.
The position detection signal S14 is output from the position detection signal output unit 15 by transmitting to the output loop coil formed by at least two X-axis lines selected by 5.

[3. Drive signal input unit 14]
The drive signal input unit 14 is provided on one end side of a plurality of Y-axis wire bodies constituting the Y-axis wire portion 12.
The drive pulse signal S4 generated by the drive signal input unit 14 is input to one end side of the plurality of Y-axis lines.

Specifically, the drive signal input unit 14 includes a first signal input switch 51Y, a second signal input switch 52Y, a common signal line 53 to which each first signal input switch 51Y is connected, and each second signal. A pulse generation circuit 55, an inverter 56, and an amplifier for transforming a drive pulse signal S4 generated based on a common signal line 54 to which an input switch is connected and a control signal S6 into a rectangular wave and supplying it to the common signal line 53. 58, including changeover switches ST1 and ST2.

The first signal input switch 51Y has Y-axis lines Y1, Y2 ... Y (M-2), Y (M-).
1), one end of the YM is connected to each Y-axis body. And the common signal line 53
The drive pulse signal S4 generated in the input drive pulse generation circuit 55 based on the control signal S6 and transformed into a square wave is received via the inverter 56 and the amplifier 58, and the drive pulse signal S4 is transmitted to each Y-axis line body. Supply. That is, the first signal input switch 51Y is one or a plurality of Y-axis wire bodies Y1, Y2 ... Y (M-2), Y (M-1), and YM to which the drive pulse signal S4 is input. It functions as a first selection unit for selecting the Y-axis line body of.

One end of the second signal input switch 52Y is a subsequent stage of the first signal input switch 51Y, and one end of the Y-axis lines Y1, Y2 ... Y (M-2), Y (M-1), YM. Is connected to each Y-axis body. The other end of the second signal input switch 52Y is connected to the ground via the common signal line 54. That is, the second signal input switch 52Y is
It is provided corresponding to each Y-axis body between one end of each corresponding Y-axis body and the ground. Then, the second signal input switch 52Y forms an input loop coil together with the Y-axis wire body selected by the first signal input switch 51Y by turning on the second signal input switch 52Y. It functions as a selection unit of 2.

That is, these first selection unit and the second selection unit function as Y-axis line body selection units for selecting at least two Y-axis line bodies forming the input loop coil from the plurality of Y-axis line bodies.

[4. Position detection signal output unit 15]
The position detection signal output unit 15 is provided on one end side of a plurality of X-axis line bodies constituting the X-axis line unit 11, and when the position designation tool 2 specifies the XY coordinate position of the XY coordinate forming unit, the designated coordinate position is specified. The designated position detection signal S14 corresponding to is output.

Specifically, the position detection output unit 15 includes a third signal input switch 61X, a fourth signal input switch 62X, a common signal line 63 to which each third signal input switch 61X is connected, and each second signal. Common signal line 64 to which the input switch 62X is connected, changeover switch ST
3. Includes an electromagnetic induction signal output circuit 66 having a differential amplifier circuit configuration.

The third signal input switch 61X is an X-axis wire body X1, X2 ... X (N-2), X (N-).
1), one end of the XN is connected to each X-axis body. And the common signal line 63
Through the electromagnetic induction signal output circuit 6 of the differential amplifier circuit configuration via the changeover switch ST3.
It is connected to the non-inverting input end of 6. That is, the third signal input switch 61X is each X.
Select an X-axis body that is connected to one end side of the axis body and forms an output loop coil.

One end of the fourth signal input switch 62X is a subsequent stage of the third signal input switch 61X, and one end of the X-axis lines X1, X2 ... X (N-2), X (N-1), XN. It is connected to each X-axis body corresponding to. The other end of the fourth signal input switch 62X is connected to the inverting input end of the electromagnetic induction signal output circuit 66 via the common signal line 64 together with grounding. That is, the fourth signal input switch 62X is connected to one end side of each X-axis wire body, and together with the X-axis wire body selected by the third signal input switch 61X, selects an X-axis wire body that forms an output loop coil. To do.

That is, the third signal input switch 61X and the fourth signal input switch 62X function as an X-axis body selection unit that selects at least two X-axis bodies forming the output loop coil.

<Operation in position detection unit 10>
4 and 5 are conceptual diagrams showing a switch management table provided in the designated position detection control unit 16. The table shown in FIG. 4 is particularly the Y-axis body Y1 and Y constituting the Y-axis portion 11.
2 ... Which Y-axis body of Y (M-2), Y (M-1), and YM is used for forming the input loop coil, that is, connected to one end of each Y-axis body 62X. This is for controlling the on / off operation of the first signal input switch 51Y and the second signal input switch 52Y. The designated position detection control unit 16 generates a switching signal S10 based on the table, and the drive signal input unit 14 that receives the switching signal S10 controls the signal input switches 51Y and 52Y to combine one or a plurality of Y-axis lines. The input loop coils LY1 ... LYK are formed by the above.

In addition, the table shown in FIG. 5 shows, in particular, the X-axis body X1, X2, which constitute the X-axis portion 11.
Which X-axis body of X (N-2), X (N-1), and XN is used for forming the output loop coil, that is, a third connected to one end of each X-axis body 62X. This is for controlling the on / off operation of the signal input switch 61X and the fourth signal input switch 62X. The designated position detection control unit 16 generates a switching signal S10 based on the table, and the position detection signal output unit 15 that receives the switching signal S10 controls the signal input switches 61X and 62X to control one or a plurality of X-axis lines. The output loop coils LX1 ... LXL are formed by the combination.

According to the example of FIG. 4, 18 Y-axis line bodies 71 constituting the Y-axis line portion 12 are shown in the vertical axis direction, and input loop coil numbers 72 (LY1 to LY1 to) formed by each Y-axis line body in the horizontal axis direction. LY
K: LY7) is shown in the example of FIG. Then, the first signal input switch 51Y arranged corresponding to one or a plurality of Y-axis lines marked with "a" in the figure is turned on based on the switching signal S10 received from the designated position detection control unit 16. Operate. At the same time, based on the switching signal S10 received from the designated position detection control unit 16 by the second signal input switch 52Y arranged corresponding to one or a plurality of Y-axis lines marked with "b" in the figure. To work on.

FIG. 6 is a diagram conceptually showing an input loop coil formed as a result of the first and second signal input switches 51Y and 52Y being turned on by the switching signal S10 generated based on the table shown in FIG. is there. With reference to the input loop coil number LY1 in the table of FIG. 4, "a" is attached to the Y-axis wire body Y1, and the first signal input switch 51Y1 corresponding to the Y-axis wire body Y1 is turned on. Further, "b" is attached to the Y-axis lines Y5 and Y6, and the second signal input switches 52Y5 and 52Y6 corresponding to the Y-axis lines Y5 and Y6 are turned on. As a result, as shown in FIG. 6, the input loop coil LY1 composed of the Y-axis wire body Y1 and the Y-axis wire bodies Y5 and Y6 is formed.

Then, similarly below, based on the table shown in FIG. 4, the input loop coils LY2 and L
Y3 ... LYK (LY7 in the example of FIG. 4) is formed.

In this way, the on / off operation of the first and second signal input switches is controlled based on the switch management table shown in FIG. 4, and one or a plurality of input loop coils LY can be obtained from the plurality of Y-axis lines. Form.

Then, the input loop coils LY1 ... Formed by sequentially switching the Y-axis wire bodies selected by the first and second signal input switches 51Y and 52Y based on the switch management table shown in FIG. LYK is also switched sequentially.

Further, according to the example of FIG. 5, 22 X-axis wire bodies 73 constituting the X-axis line portion 11 are shown in the vertical axis direction, and the output loop coil number 74 formed by each X-axis wire body in the horizontal axis direction ( LX1
... LXL) is shown. Then, the third signal input switch 61X arranged corresponding to one or a plurality of X-axis lines marked with "a" in the figure is turned on based on the switching signal S10 received from the designated position detection control unit 16. Operate. At the same time, based on the switching signal S10 received from the designated position detection control unit 16 by the fourth signal input switch 62X arranged corresponding to one or a plurality of X-axis lines marked with "b" in the figure. To work on.

FIG. 6 is a diagram conceptually showing an output loop coil formed as a result of turning on the third and fourth signal input switches 61X and 62X by the switching signal S10 generated based on the table shown in FIG. is there. With reference to the output loop coil number LX1 in the table of FIG. 5, "a" is attached to the X-axis wire body X1, and the third signal input switch 61X1 corresponding to the X-axis wire body X1 is turned on. Further, "b" is attached to the X-axis wire bodies X5 and X6, and the fourth signal input switches 62X5 and 62X6 corresponding to the X-axis wire bodies X5 and X6 are turned on. As a result, as shown in FIG. 6, the X-axis wire body X1 and the output loop coil LX1 composed of the X-axis wire bodies X5 and X6 are formed.

Then, similarly, based on the table shown in FIG. 5, as shown in FIG. 6, output loop coils LX2, LX3 ... LXL (LY9 in the example of FIG. 5) are formed.

In this way, the on / off operation of the third and fourth signal input switches is controlled based on the switch management table shown in FIG. 5, whereby one or a plurality of output loop coils LX can be obtained from the plurality of X-axis lines. Form.

Then, the output loop coils LX1 ... Formed by sequentially switching the X-axis lines selected by the third and fourth signal input switches 61X and 62X based on the switch management table shown in FIG. LXL is also switched sequentially.

In the present embodiment, the drive signal input unit 14 sequentially turns on the first and second signal input switches in the reference detection cycle, whereby the input loop coils LY1, LY2 ...
An induced electromagnetic field is generated in the Y-axis portion 12 by sequentially passing a drive pulse signal S4, that is, a drive input pulse current through LYK. In this state, the user can use the pen-shaped positioning tool 2
The coordinate position is specified by performing a pen touch operation on the XY coordinate plane of the XY coordinate forming unit.

At this time, the position designation tool 2 has a resonance circuit composed of an induction coil and a resonance capacitor, and the induction coil and the resonance capacitor are generated by the electromagnetic field generated by the input loop coils LY1 ... LYK at the positions where the user has operated the pen touch. Causes a tuned resonant current. Then, the induction voltage is induced in the output loop coils LX1 ... LXL at the position where the pen touch operation is performed based on the induction electromagnetic field generated in the induction coil based on the tuning resonance current.

Then, the position detection signal output unit 15 uses the third and fourth signal input switches 61X and 62X.
The electromagnetic induction signal output circuit 66 receives a detection voltage based on the induction voltage induced by the output loop coils LX1 ... LXL formed by the above, and outputs this as a designated position detection output signal S12. Then, the output designated position detection output signal S12 is sent to the designated position detection control unit 16 as the position detection output signal S14 via the synchronous detection circuit.

In the present embodiment, the on-operation periods of the third and fourth signal input switches 61X and 62X of the position detection signal output unit 15 are the first and second signal input switches 51Y of the drive signal input unit 14. It is selected at the timing of one cycle during each on-operation period of 52Y. Thereby, the position detection output can be obtained from all the output loop coils LX1 ... LXL during each drive period in which the drive input pulse current is flowing through the input loop coils LY1 ... LYK, respectively.

Further, in the present embodiment, as is clear from the examples of the table shown in FIGS. 4 and 5, the input loop coil and the output loop coil shown in FIG. 6, in some cases, the loop coil is a plurality of axial lines. Are formed in parallel (for example, the Y-axis line body Y1 and the Y-axis line body Y2 in the input loop coil LY2). Generally, a wire rod such as a conducting wire forming an axial wire body according to the present embodiment contains a predetermined DC resistance component. However, by using a plurality of axis bodies in parallel as in the present embodiment, it is possible to reduce the influence of the DC resistance component.

Further, in the present embodiment, the first and second signal input switches 51Y and 52Y and the third and fourth signal input switches 61X and 6 are based on the tables shown in FIGS. 4 and 5.
By controlling the on-operation with 2X, the input loop coil LY and the output loop coil L
X was formed. However, by appropriately rewriting the tables shown in FIGS. 4 and 5 or changing the table to be referred to, the configuration of the axis body forming each loop coil (for example, the width of each loop coil or between each loop coil). Interval) can be changed.

For example, in the example shown in FIG. 4, each input loop coil is configured with three or four Y-axis wires sandwiched between them, but in the example shown in FIG. 7A, each input loop coil is interposed. 5 in between
It is configured by sandwiching a book or six Y-axis lines. As a result, as shown in FIG. 7 (b), Y
It is possible to change the widths W1 and W2 of the individual input loop coils formed by the axial body.

Further, in the example shown in FIG. 8A, the width of the input loop coil itself is configured to sandwich the three Y-axis lines as in the example shown in FIG. 4, but each input loop coil LY1
... The LY5s are not formed adjacent to each other, but are configured by sandwiching one Y-axis body (for example, the Y-axis body Y2 between LY1 and LY2). As a result, as shown in FIG. 8B, the center spacing P1 between the adjacent input loop coils is formed wider than that of the example of the input loop coil shown in FIG.

In each of the examples shown in FIGS. 7 and 8, the input loop coil LY is described as an example.
Of course, the same control can be performed on the output loop coil LX.

FIG. 9 shows three switch management tables (low-definition mode table, high-definition mode table, and normal mode table) having different configurations of each axis forming the loop coil, as in the examples shown in FIGS. 7 and 8. It is a figure which shows the processing flow when the table) is provided for Y axis part 12 (that is, for input loop coil) and for X axis part 11 (that is, for output loop coil), respectively. In the low-definition mode table, the distance between the loop coils formed by the axis is wider than that in the normal mode table. Further, the high-definition mode table is formed so that the distance between the loop coils formed by the axis body is narrower than that of the normal mode table.

According to FIG. 9, first, the central processing unit 20 applies any of the low-definition mode table, the high-definition mode table, and the normal mode table as the switch management table applied to the Y-axis portion and the X-axis portion. Is selected (ST101). The selection is made by the user or application depending on the user's operation or the context of the touch operation. As an example, the normal mode table is selected when the standby application is executed. Further, the low-definition mode table is selected when an application such as a telephone application, an image reproduction application, or an image shooting application that does not require a detailed pen touch operation from the user is executed. The high-definition mode table is selected when an application that requires a fine pen touch operation from the user, such as a character input application or a drawing application, is executed.

When the mode of the switch management table to be used by the central processing unit 20 is selected, the designated position detection control unit 16 determines whether the low-definition mode table, the high-definition mode table, or the normal mode table is selected according to the selection. Set that table for reference (ST
102 to ST104). Then, the designated position detection control unit 16 generates a switching signal S10 according to the set switch management table, and the drive signal input unit 14 and the position detection signal output 1
It is sent to 5 (ST105).

The drive signal input unit 14 that has received the switching signal S10 controls the on operation of the first and second signal input switches 51Y and 52Y based on the switching signal S10, and is for input configured by the Y-axis line body. The loop coil LY is switched (ST106). Further, the switching signal S10
The position detection signal output unit 15 that has received the above controls the on operation of the third and fourth signal input switches 61Y and 62Y based on the switching signal S10, and is an output loop coil composed of an X-axis wire. Switch LX (ST107).

Using the input loop coil and the output loop coil formed in ST106 and ST107, the position detection signal output unit 15 is the coordinate position of the pen touch operation performed by the position designation tool 2 on the XY coordinate plane of the XY coordinate forming unit. Is detected (ST108). Then, the position detection signal output unit 15 generates a position detection output signal S14 based on the detected coordinate position and sends it to the designated position detection control unit 16 (ST109). Upon receiving this, the designated position detection control unit 16 transmits the designated position detection signal S2 to the central processing unit 20 based on the received detection output signal S14.
Is sent to, and this process is terminated.

In this embodiment, the process is repeated at a predetermined cycle. Further, in the above example, three tables having different intervals between the loop coils formed by the axis bodies are used, but tables having different widths and numbers of the axis lines forming each loop coil are prepared. It is also possible. By using a plurality of tables having different configurations of each axis forming the loop coil in this way, it is possible to temporarily improve the detection accuracy of the pen touch operation and change the detection speed and the detectable range.

Further, in the present embodiment, the switch management table is used to input the first and second signal input switches 51Y and 52Y connected to the Y-axis body, and the third and fourth signal inputs connected to the X-axis body. Controls the on-operation of switches 61Y and 62Y. However, for example, by constantly turning on each signal input switch and controlling the off operation of each switch based on the changeover signal S10 generated based on the switch management table, the loop coil for each input and the loop coil for output are controlled. Is possible to form.

<Structure of XY coordinate forming part>
FIG. 10 is a diagram showing a specific structure of the Y-axis portion 12 constituting the XY coordinate forming portion according to the present embodiment. According to FIG. 10, each Y-axis line body constituting the Y-axis line portion 12 extends linearly and is arranged on the insulating layer portion 13 in parallel at equal intervals. One end of each Y-axis wire is passed through the sensor connection lead-out portion 76, and the first and second signal input switches 5 are used.
It is connected to 1Y and 52Y. Further, the other end of each Y-axis wire is short-circuited, and the common signal line 5 is used.
They are connected to each other via 7.

In the present embodiment, at a position on the insulating layer portion 13 corresponding to the peripheral edge of the display portion 30.
The outer peripheral electrode portion 75 is arranged. The outer peripheral electrode portion 75 is installed for the purpose of reducing various noise components and static electricity that are superimposed on the display portion 30 and the Y-axis line body. In the present embodiment, in addition to this, the outer peripheral electrode portion 75 is used as one of the Y-axis wire bodies constituting the Y-axis wire portion 12.
To use. That is, one end of the outer peripheral electrode portion 75 is connected to the first and second signal input switches 51Y and 52Y via the sensor connection lead-out portion 76 as in the Y-axis wire body, and the outer edge of the Y-axis wire body is connected to the Y-axis wire body. It extends parallel to Y1 and when it reaches the outer edge of the Y-axis body, it extends in a direction perpendicular to the Y-axis body. Then, the outer peripheral electrode portion 75 functions as a common signal line 57 and is connected to each Y-axis wire body. Y-axis body Y to function as one of the Y-axis bodies again
The outer edge of M is extended parallel to the Y-axis body YM. Then, the outer peripheral electrode portion 75 is connected to the first and second signal input switches 51Y and 52Y via the sensor connection lead-out portion 76.

That is, in the present embodiment, in the Y-axis body, a part of the outer peripheral electrode portion 75 is the Y-axis body Y1.
Y2 ... Y (M-1) are arranged adjacent to the Y-axis body Y2 ... Y (M-1), and a part of the outer peripheral electrode portion 75 is formed as the Y-axis line body YM adjacent thereto.

With this configuration, the outer peripheral electrode portion 75, which was originally hidden by the housing of the terminal device 1 and could not be used as the XY coordinate forming portion, can be used as the XY coordinate forming portion, and the terminal can be used. Effective use of device space is possible.

The structure of the X-axis portion 11 is not particularly described in detail, but is the same except that each axis is extended in a direction orthogonal to the Y-axis.

FIG. 11 is a diagram schematically showing the structure of the end portion of the Y-axis line portion constituting the Y-axis portion according to the present embodiment, of the conventional Y-axis portion.

FIG. 11A is a diagram schematically showing an end portion of a conventional Y-axis portion. FIG. 11B is a diagram schematically showing a partial cross section of the end portion of the conventional Y-axis portion. According to FIG. 11A, in the conventional Y-axis portion, the constituent axis bodies 77 and 78 and the like are connected by the inter-line body lead wires 81c, so that the combination of the constituent axis lines is fixedly fixed. Each loop coil is formed. Then, the loop coils to be configured are arranged so as to overlap each other.
Therefore, according to FIG. 11B, in order to prevent structural interference between the loop coils, the lead wires 81c between the wire bodies are arranged on the surface opposite to the surface on which the axial wires of the insulating layer 79 are arranged. Then, the inter-wire lead wire 81c and the end of each axis are connected via the interlayer connection portions 81a and 81b to form a loop coil. Therefore, the insulating layer 79 has a through hole 80.
Is an essential configuration.

On the other hand, in the Y-axis wire body according to the present embodiment, one end thereof is connected to the first and second signal input switches 51Y and 52Y, and the formation of the input loop coil is performed on / off of the signal input switch. It is performed by controlling the operation. Therefore, each Y-axis body Y1 ... YM has one end thereof on the common signal lines 53 and 54, and the first and second signal input switches 51Y and 52.
It may be formed so as to be connected to Y. That is, as shown in FIG. 12, all the Y-axis wire bodies Y1 ... YM can be arranged on one surface of the insulating layer 13. Therefore, an insulating layer having a through hole, which is required for a conventional Y-axis body, is not required. This makes it possible to use an inexpensive and flexible transparent film material such as polyethylene terephthalate (PET) or polycarbonate (PC) for the insulating layer 13.

As described above, according to the terminal device 1 and the position detection unit 10 according to the first embodiment of the present invention.
A first and second Y-axis body connected to one end of a plurality of Y-axis bodies Y1 ... YM constituting the Y-axis portion 12.
The signal input switches 51Y and 52Y of the above sequentially switch and select the Y-axis line body to which the drive pulse signal S4 is input, that is, the Y-axis line body forming the input loop coil. Also,
A third and fourth X-axis body X1 ... XN connected to one end of a plurality of X-axis bodies X1 ... XN constituting the X-axis portion 11.
The X-axis line bodies forming the output loop coil are sequentially switched and selected by the signal input switches 61Y and 62Y of. With this configuration, it is possible to appropriately select and switch the axis body forming each loop coil according to the situation, temporarily improve the coordinate detection accuracy, and change the coordinate detection speed and detectable range. It can be changed.

Further, in some cases, a plurality of axis bodies forming each loop coil can be used in parallel, and the influence of the DC resistance component contained in the conducting wire forming each axis line body can be reduced.

Further, since the axis body forming each loop coil is sequentially switched and controlled by the first to fourth signal input switches, the loop coils physically interfere with each other as seen in the conventional XY coordinate detection unit. It does not have such a configuration. Therefore, it is not necessary to provide the insulating layer 13 with a special structure such as a through hole, and it is possible to expand the options of the insulating layer 13.

<Outline of the second embodiment of the present invention>
A second embodiment of the present invention will be described. The description of those having the same functions as the terminal device 1 and the position detection unit 10 according to the first embodiment will be omitted. In addition, the first embodiment described above and the second embodiment described below can be combined in part or in whole as appropriate.

As shown in FIG. 13, each component constituting the terminal device 100 according to the second embodiment of the present invention is the same as the component of the terminal device 1 according to the first embodiment shown in FIG. But,
As will be described later, the switch management tables included in the X-axis line unit 111, the Y-axis line unit 112, and the designated position detection control unit 116 that form the XY coordinate forming unit are different from each other. Therefore, the selection operation of the X-axis line bodies X1 ... XN constituting the X-axis line portion 111 and the selection operation of the Y-axis line bodies Y1 ... YM constituting the Y-axis line portion 112 are different, and according to the second embodiment. A new function is added to the terminal device 100.

That is, in the terminal device 100 according to the second embodiment, the Y-axis lines Y1 ... Y
A part of M is used for forming an input loop coil for the electromagnetic induction method, and the other part is used as a Y-axis electrode for the capacitance method. Similarly, each X-axis body X
1 ... A part of XN is used for forming an output loop coil for the electromagnetic induction method, and the remaining part is used as an X-axis electrode for the capacitance method. Therefore, each of the axis bodies constituting the axis portions 111 and 112 in the present embodiment can be used as a capacitance type Y coordinate system electrode or X coordinate system electrode.

FIG. 13 is a block diagram showing the configuration of the terminal device 100 according to the second embodiment of the present invention. According to FIG. 13, the terminal device 100 according to the present embodiment includes at least a position detection unit 110, a central processing unit 20, and a display unit 30 as its components.

The position detection unit 110 is arranged on the upper surface of the display unit 30, and includes a Y-axis line portion 112, an X-axis line portion 111, and an insulating layer portion 13. The central processing unit 20 exchanges the information display signal S1 with the display unit 30. Further, in the central processing unit 20, the user can use the XY of the display unit 30.
When a specific position on the display surface is specified by performing an operation (this is referred to as a "pen touch operation") in which a position specifying tool 2 having a pen shape is brought into contact with or close to the display surface of the display unit 30.
The display position detection signal S2 indicating the designated position is received from the designated position detection control unit 116. Further, in the terminal device 100 according to the present embodiment, the central processing unit 20 is an operation in which the user brings the fingertip 3 into contact with or close to the display surface of the display unit 30 at a specific position on the XY surface of the display unit 30 (this). Is designated by performing (referred to as "finger touch operation"), the display position detection signal S2 indicating the designated position is received from the designated position detection control unit 116. The details of the position detection unit 110 will be described later.

<Position detection unit 110>
In the present embodiment, the position detection unit 110 includes a designated position detection control unit 116, an XY coordinate forming unit composed of an X-axis line unit 111, a Y-axis line unit 112, and an insulating layer 13, a drive signal output unit 114, and a position. Includes a detection signal output unit 115.

[1. Designated position detection control unit 116]
The designated position detection control unit 116 jointly performs the position detection unit 10 with the central processing unit 20.
Controls the entire operation of 0. More specifically, the designated position detection control unit 116 has the switching signal S1.
0 is supplied to the drive signal input unit 114 and the position detection signal output unit 115, and the drive signal input unit 1
Controls the on / off operation of the first signal input switch 51Y and the second signal input switch 52Y arranged at 14, and the on / off operation of the third signal input switch 61X and the fourth signal input switch 62X. .. Further, the designated position detection control unit 116 is the position detection signal output unit 11.
The designated position detection signal S14 is received from 5 and the central processing unit 20 receives the designated position detection signal S14.
Provided as 2.

Further, in the designated position detection control unit 116, the Y-axis body Y1 ...
The first and second input signal switches 51Y and 52Y connected to the TM, and the X-axis wire bodies X1 ... XM connecting the X-axis unit 11 and the third and fourth input signal switches 61X,
To control the on / off operation of 62X and select each axis used for forming a loop coil as an electromagnetic induction method or each axis used as an X-axis and Y-axis electrode as a capacitance method. A switch management table (FIG. 15) for generating the switching signal S10 of the above is provided. Then, the designated position detection control unit 116 sets the switching signal S1 based on the switch management table.
0 is generated to control the on / off operation of the first and second input signal switches 51Y and 52Y and the third and fourth input signal switches 61X and 62X.

[2. X-axis part 111 and Y-axis part 112]
The X-axis line portion 111 and the Y-axis line portion 112 together with the insulating layer portion 13 form an XY coordinate forming portion. Of the XY coordinate forming portions, the X-axis line portion 111 extends linearly in the Y-axis direction of the XY coordinate plane and is arranged parallel to each other at equal intervals in the X-axis direction, as shown in FIG. It has N (for example, 32) linear X-axis lines X1, X2 ... XN.

Here, in the second embodiment, among the X-axis line bodies X1 ... XN, the predetermined X-axis line bodies X1, X2, X4, X6 ... X (N-1), and XN are the first. Similar to one embodiment, one end side is connected to the third and fourth signal input switches 61X and 62X, and the other end side is short-circuited to the other end side of each axis via the common signal line 67. Connected to each other. On the other hand, for the remaining axis bodies X3, X5, X7 ... X (N-4), X (N-2), one end side is connected to the third and fourth signal input switches 61X, 62X. Are formed independently of each other without being connected to the common signal line 67 on the other end side of each axis.

That is, of the X-axis bodies X1 ... XN, the X-axis bodies X1, X2, X4, X6 ... X
For (N-1) and XN, at least two axis bodies are selected according to the control of the designated position detection control unit 16 to form an output loop coil used in the electromagnetic induction method.

On the other hand, of the X-axis lines X1 ... XN, X3, X5, X7 ... X (N-4), X (
For N-2), individual X-axis electrodes used in the capacitance method are formed according to the control of the designated position detection control unit 16.

On the other hand, the Y-axis portion 112 is a linear shape of M lines (for example, 20 lines) extending linearly in the X-axis direction of the XY coordinate plane and arranged parallel to each other at equal intervals in the X-axis direction. Y-axis body Y
1, Y2 ... YM.

Here, in the second embodiment, among the Y-axis line bodies Y1 ... YM, the predetermined Y-axis line bodies Y1, Y2, Y4, Y6 ... Y (M-1), and YM are the first. Similar to one embodiment, one end side is connected to the first and second signal input switches 51Y and 52Y, and the other end side is short-circuited to the other end side of each axis via the common signal line 57. Connected to each other. On the other hand, for the remaining axis bodies Y3, Y5, Y7 ... Y (M-4), Y (M-2), one end side is connected to the first and second signal input switches 51X and 52X. Are formed independently of each other without being connected to the common signal line 57 on the other end side of each axis.

Then, among the Y-axis bodies Y1 ... YM, the Y-axis bodies Y1, Y2, Y4, Y6 ... Y (
For M-1) and YM, at least two axis bodies are selected according to the control of the designated position detection control unit 16 to form an input loop coil used in the electromagnetic induction method.

On the other hand, of the Y-axis bodies Y1 ... YM, Y3, Y5, Y7 ... Y (M-4), Y (
For M-2), individual Y-axis electrodes used in the capacitance method are formed according to the control of the designated position detection control unit 16.

In this way, the X-axis lines X1 and X constituting the XY coordinate detection unit with the insulating layer portion 13 sandwiched between them.
2 ... XN and Y-axis lines Y1, Y2 ... YM are alternately intersected so as to be orthogonal to each other. Then, the display unit 30 is formed by the stacked X-axis line portion 111 and the Y-axis line portion 112.
As the display surface of, that is, the XY coordinate position on the operation display surface of the protective layer portion 31, the X-axis line body X1,
The coordinate position can be specified by the intersection of X2 ... XN and the Y-axis line bodies Y1, Y2 ... YM.

More specifically, when the designated position detection control unit 116 controls based on the electromagnetic induction method, the designated position tool 2 designates the XY coordinate position of the XY coordinate forming unit as in the first embodiment. Occasionally, the input signal input from the input loop coil formed by at least two Y-axis lines selected by the drive signal input unit 114 is passed through the position specifier 2.
The position detection signal S14 is output from the position detection signal output unit 115 by transmitting to the output loop coil formed by at least two X-axis lines selected by the position detection signal output unit 115.

On the other hand, when the designated position detection control unit 116 controls based on the capacitance method, the drive signal input unit 114 when the fingertip 3 specifies the XY coordinate position of the XY coordinate forming unit.
The electrostatic field formed by the Y-axis body and the position detection signal output unit 115 selected by is changed to the electrostatic value corresponding to the user's finger. The designated position detection signal S14 is generated by detecting the change in the electrostatic value by the position detection signal output unit 115, and the designated position detection signal S14 is output from the position detection signal output unit 115.

[3. Drive signal input unit 114]
The drive signal input unit 114 is provided on one end side of a plurality of Y-axis wire bodies constituting the Y-axis line unit 112, and the drive pulse signal S generated by the drive signal input unit 114 is provided on one end side of the plurality of Y-axis wire bodies.
4 is input to each Y-axis line body.

Specifically, the drive signal input unit 114 includes a common signal line 53 to which a first signal input switch 51Y, a second signal input switch 52Y, and each first signal input switch 51Y are connected.
A pulse generation circuit 55 for transforming a drive pulse signal S4 generated based on a common signal line 54 to which each second signal input switch is connected and a control signal S6 into a square wave and supplying it to the common signal line 53. , Inverter 56, Amplifier 58, Changeover switches ST1, ST2
including.

The first signal input switch 51Y is connected to one ends of Y-axis bodies Y1 ... Y (M-1) and YM corresponding to each Y-axis body. Then, the control signal S is passed through the common signal line 53.
The drive pulse signal S4 generated in the input drive pulse generation circuit 55 based on 6 and transformed into a square wave is received via the inverter 56 and the amplifier 58, and the drive pulse signal S4 is supplied to each Y-axis line body. That is, the first signal input switch 51Y has a Y-axis wire body Y1 ...
First, from YYM, one or a plurality of Y-axis lines to which the drive pulse signal S4 is input are selected.
Functions as a selection part of.

In the present embodiment, among the Y-axis lines Y1 ... YM, the Y-axis lines Y1, Y2,
Y4, Y6 ... Y (M-1), YM form an electromagnetic induction type input loop coil.
It is used as an axis body. On the other hand, Y-axis lines other than the above, that is, Y-axis lines Y3 and Y5
, Y7 ... Y (M-4) and Y (M-2) are used as capacitance type Y-axis electrodes. Therefore, the Y-axis wire bodies Y1 and Y forming the electromagnetic induction type input loop coil are formed.
2, Y4, Y6 ... Y (M-1), each first signal input switch 51Y corresponding to YM, and Y-axis wire bodies Y3, Y5, Y7.・ ・ Y (M-4
), And each of the first signal input switches 51Y corresponding to Y (M-2) are sequentially turned on at a predetermined cycle.

One end of the second signal input switch 52Y is a subsequent stage of the first signal input switch 51Y, and one end of the Y-axis lines Y1, Y2 ... Y (M-2), Y (M-1), YM. Is connected to each Y-axis body. The other end of the second signal input switch 52Y is connected to the ground via the common signal line 54. That is, the second signal input switch 52Y is
It is provided corresponding to each Y-axis body between one end of each corresponding Y-axis body and the ground. Then, the second signal input switch 52Y is connected to the Y-axis wire body selected by the first signal input switch 51Y by turning on the second signal input switch 52Y, and the first signal input switch It functions as a second selection unit that forms an input loop coil together with the Y-axis wire body selected by 51Y.

In the present embodiment, among the Y-axis lines Y1 ... YM, the Y-axis lines Y1, Y2,
Y4, Y6 ... Y (M-1), YM form an electromagnetic induction type input loop coil.
It is used as an axis body. On the other hand, Y-axis lines other than the above, that is, Y-axis lines Y3 and Y5
, Y7 ... Y (M-4) and Y (M-2) are used as capacitance type Y-axis electrodes. Therefore, the Y-axis wire body Y used as an input loop coil of the electromagnetic induction method.
1, Y2, Y4, Y6 ... Y (M-1), second signal input switch 52 corresponding to YM
Y is sequentially turned on at a predetermined cycle, but the Y-axis lines Y3, Y5, Y7 ... Y (M-4),
The second signal input switch 52Y corresponding to Y (M-2) is always off.

That is, the Y-axis wire bodies Y1, Y2, Y4, Y6, etc. used as the input loop coil ...
The first and second signal input switches 51Y and 52Y corresponding to Y (M-1) and YM are
Both are sequentially turned on at predetermined intervals. On the other hand, the Y-axis wire body Y3 used as the Y-axis electrode
, Y5, Y7 ... Each first signal input switch 5 corresponding to Y (M-4), Y (M-2)
The 1Y is sequentially turned on at a predetermined cycle, but the second signal input switch 52Y is always turned off.

[4. Position detection signal output unit 115]
The position detection signal output unit is provided on one end side of a plurality of X-axis line bodies constituting the X-axis line unit 111, and is designated when the position designation tool 2 or the fingertip 3 specifies the XY coordinate position of the XY coordinate forming unit. The position detection signal corresponding to the coordinate position is output.

Specifically, the position detection output unit 115 is the same as the position detection output unit 15 according to the first embodiment, that is, the third signal input switch 61X, the fourth signal input switch 62X, and each third signal input. It includes a common signal line 63 to which the switch 61X is connected, a common signal line 64 to which each second signal input switch 62X is connected, a changeover switch ST3, and an electromagnetic induction signal output circuit 66 having a differential amplification circuit configuration. Further, the position detection output unit 115 according to the present embodiment includes changeover switches ST4 to ST7 and a capacitance signal output circuit 161.

The third signal input switch 61X is connected to one end of the X-axis body X1 ... XN corresponding to each X-axis body. Then, through the common signal line 63, it is connected to the non-inverting input terminal of the electromagnetic induction signal output circuit 66 of the differential amplifier circuit configuration via the changeover switch ST3.
That is, the third signal input switch 61X is connected to one end side of each X-axis wire and selects an X-axis body that forms an output loop coil.

In this embodiment, among the X-axis bodies X1 ... XN, the X-axis bodies X1, X2,
X4, X6 ... X (N-1), XN form an electromagnetic induction type input loop coil X
It is used as an axis body. On the other hand, X-axis bodies other than the above, that is, X-axis bodies X3, X5
, X7 ... X (N-4) and X (N-2) are used as capacitance type X-axis electrodes. X-axis wire bodies X1, X2, X4, X forming an electromagnetic induction type output loop coil
6 ... X (N-1), each third signal input switch 61X corresponding to XN, and X-axis wire bodies X3, X5, X7 ... X (used as capacitance type X-axis electrodes) N-4), X (N-
Each of the third signal input switches 61Y corresponding to 2) is sequentially turned on at a predetermined cycle.

One end of the fourth signal input switch 62X is the latter stage of the third signal input switch 61X, which is the X-axis line bodies X1, X2 ... X (N-2), X (N-1), XN. It is connected to one end corresponding to each X-axis body. The other end of the fourth signal input switch 62X is connected to the inverting input end of the electromagnetic induction signal output circuit 66 via the common signal line 64 together with grounding. That is, the fourth signal input switch 62X is connected to one end side of each X-axis body, and the third signal input switch 62X is connected to the third signal input switch 62X.
Along with the X-axis body selected by the signal input switch 61X of the above, the X-axis body forming the output loop coil is selected.

That is, the third signal input switch 61X and the fourth signal input switch 62X function as an X-axis body selection unit that selects at least two X-axis bodies forming the input loop coil.

In this embodiment, among the X-axis bodies X1 ... XN, the X-axis bodies X1, X2,
X4, X6 ... X (N-1), XN form an electromagnetic induction type input loop coil X
It is used as an axis body. On the other hand, X-axis bodies other than the above, that is, X-axis bodies X3, X5
, X7 ... X (N-4) and X (N-2) are used as capacitance type X-axis electrodes. Therefore, the X-axis wire body X used as the output loop coil of the electromagnetic induction method.
1, X2, X4, X6 ... X (N-1), 4th signal input switch 62 corresponding to XN
X is sequentially turned on at a predetermined cycle, but the X-axis lines X3, X5, X7 ... X (N-4),
The fourth signal input switch 62X corresponding to X (N-2) is always off.

That is, the X-axis wire bodies X1, X2, X4, X6 used as the output loop coil ...
The third and fourth signal input switches 61X and 62X corresponding to X (N-1) and XN are
Both are sequentially turned on at predetermined intervals. On the other hand, the X-axis body X3 used as the X-axis electrode
, X5, X7 ... Each third signal input switch 6 corresponding to X (N-4), X (N-2)
The 1X is sequentially turned on at a predetermined cycle, but the fourth signal input switch 62X is always turned off.

<Operation in position detection unit 110>
15 and 16 are conceptual diagrams showing a switch management table provided in the designated position detection control unit 116. In the table shown in FIG. 15, in particular, which of the Y-axis wire bodies Y1 ... YM constituting the Y-axis wire portion 112 is used for forming the input loop coil in the electromagnetic induction method, or the capacitance method is used. Used as the Y-axis electrode of the above, that is, each Y-axis wire body 62
First signal input switch 51Y and second signal input switch 52Y connected to one end of X
It is for controlling the on / off operation of. The designated position detection control unit 116 generates a switching signal S10 based on the table, and the drive signal input unit 114 that receives the switching signal S10 controls the signal input switches 51Y and 52Y, and electromagnetically uses a combination of a plurality of Y-axis lines. The input loop coils LY1 ... LYK in the induction method are formed, and the Y-axis electrode in the capacitance method is formed.

Further, in the table shown in FIG. 16, in particular, each X-axis body X1 ...
Which X-axis body of XN is used for forming the output loop coil in the electromagnetic induction method or is used as the X-axis electrode of the capacitance method, that is, the first connected to one end of each X-axis body 62X. This is for controlling the on / off operation of the signal input switch 61X of No. 3 and the signal input switch 62X of the fourth. The designated position detection control unit 116 generates a switching signal S10 based on the table, and the position detection signal output unit 115 that receives the switching signal S10 controls the signal input switches 61X and 62X by combining a plurality of Y-axis lines. Output loop coil LX1 ... LXL in the electromagnetic induction method is formed, and X in the capacitance method
A shaft electrode is formed.

According to the example of FIG. 15, 17 Y-axis line bodies constituting the Y-axis line portion 112 are shown in the vertical direction, and the input loop coil numbers (LY1 to LYK: Example of FIG. 4) formed by each Y-axis line body are shown. LY4) is shown in. Then, the first signal input switch 51Y arranged corresponding to one or a plurality of Y-axis lines marked with "a" in the figure is turned on based on the switching signal S10 received from the designated position detection control unit 116. Operate. At the same time, based on the switching signal S10 received from the designated position detection control unit 116 by the second signal input switch 52Y arranged corresponding to one or a plurality of Y-axis lines marked with "b" in the figure. To work on.

FIG. 17 is a diagram conceptually showing an input loop coil formed as a result of the first and second signal input switches 51Y and 52Y being turned on by the switching signal S10 generated based on the table shown in FIG. is there. With reference to the input loop coil number LY1 in the table of FIG. 15, "a" is attached to the Y-axis wire bodies Y1 and Y2, and the first signal input switches 51Y1 and 51Y2 corresponding to the Y-axis wire body Y1 are turned on. To. Further, "b" is attached to the Y-axis lines Y6 and Y8, and the second signal input switch 52Y6 corresponding to the Y-axis lines Y6 and Y8 is attached.
And 52Y8 are turned on. As a result, as shown in FIG. 17, an input loop coil LY1 composed of Y-axis line bodies Y1 and Y-axis line bodies Y2 and Y-axis line bodies Y6 and Y8 is formed. Then, LY2, LY3, and LY4 are sequentially formed in the same manner below.

With reference to FIG. 15, the Y-axis line bodies Y3, Y5, Y7, Y9, Y11, Y13, Y1
Reference numeral 5 has neither "a" nor "b". That is, it has been shown that these Y-axis wires function as capacitance-type Y-axis electrodes, and a switch management table for controlling the capacitance-type Y-axis electrodes prepared as needed is provided. With reference to this, the first input switch 51Y is sequentially switched. Further, the second signal input switches 52Y3, 52Y5, 52Y7, 52Y9, 52Y11, 52 provided corresponding to the Y-axis wire body.
Y13 and 52Y15 are off.

Further, according to the example of FIG. 16, 21 X-axis line bodies constituting the X-axis line portion 11 are shown in the vertical direction, and the output loop coil numbers 74 (LX1 ... LXL) formed by each X-axis line body are shown.
)It is shown. Then, the third signal input switch 61X arranged corresponding to one or a plurality of X-axis lines marked with "a" in the figure is turned on based on the switching signal S10 received from the designated position detection control unit 116. Operate. At the same time, based on the switching signal S10 received from the designated position detection control unit 116 by the fourth signal input switch 62X arranged corresponding to one or a plurality of X-axis lines marked with "b" in the figure. To work on.

FIG. 17 is a diagram conceptually showing an output loop coil formed as a result of turning on the third and fourth signal input switches 61X and 62X by the switching signal S10 generated based on the table shown in FIG. is there. With reference to the output loop coil number LX1 in the table of FIG. 16, "a" is attached to the X-axis wire bodies X1 and X2, and the third signal input switches 61X1 and 61X2 corresponding to the X-axis wire bodies X1 and X2 are turned on. It works. Further, "b" is attached to the X-axis wire bodies X6 and X8, and the fourth signal input switches 62X6 and 62X8 corresponding to the X-axis wire bodies X6 and X8 are turned on. As a result, as shown in FIG. 17, the output loop coil LX1 composed of the X-axis wire bodies X1 and X2 and the X-axis wire bodies X6 and X8 is formed. Then, LX2, LX3, LX4, and LX5 are sequentially formed in the same manner below.

With reference to FIG. 16, the X-axis lines X3, X5, X7, X9, X11, X13, X1
5, X17, and X19 are not labeled with any of the symbols "a" and "b". That is, it has been shown that these X-axis bodies function as capacitive X-axis electrodes.
The third input switch 61X is sequentially switched with reference to the switch management table for controlling the capacitance type X-axis electrode prepared as needed. Further, the fourth signal input switches 62X3, 62X5, 62X7, 62X9, which are provided corresponding to the X-axis line body,
62X11, 62X13, 62X15, 62X17, 62X19 are off.

In the present embodiment, as shown in FIG. 17, the drive signal input unit 114 sequentially turns on the first and second signal input switches in the reference detection cycle, whereby the input loop coils LY1, LY2, ... An induced electromagnetic field is generated in the Y-axis portion 112 by sequentially passing a drive pulse signal, that is, a drive input pulse current through the LYK. In this state, the user
The coordinate position is specified by performing a pen touch operation on the XY coordinate plane of the XY coordinate forming unit with the pen-shaped position specifying tool 2.

At this time, the position designation tool 2 has a resonance circuit composed of an induction coil and a resonance capacitor, and the induction coil and the resonance capacitor are generated by the electromagnetic field generated by the input loop coils LY1 ... LYK at the positions where the user has operated the pen touch. Causes a tuned resonant current. Then, the induction voltage is induced in the output loop coils LX1 ... LXL at the position where the pen touch operation is performed based on the induction electromagnetic field generated in the induction coil based on the tuning resonance current.

Then, the position detection signal output unit 115 uses the third and fourth signal input switches 61X and 62.
The output loop coil LX1 ... formed by X receives a detection voltage based on the induction voltage induced by the LXL in the electromagnetic induction signal output circuit 66, and outputs this as a designated position detection output signal S12. Then, the output designated position detection output signal S12 is sent to the designated position detection control unit 116 as the position detection output signal S14 via the synchronous detection circuit.

On the other hand, in the present embodiment, some of the axis bodies function as the capacitance type Y-axis electrode and the X-axis electrode as shown in FIG. That is, the Y-axis wire bodies Y3, Y5 ... Y15 that function as the capacitance type Y-axis electrodes and the X-axis wire bodies X3, X5 ... X19 that function as the X-axis electrodes are mutually as shown in FIG. An orthogonal XY coordinate system (Xn, Ym) is formed. As a result, an electrostatic field due to the floating capacitance is formed around the intersection position of the Y-axis line body and the X-axis line body.

In each lattice space of the XY coordinate system, this electrostatic field is centered on the coordinates (Xn, Ym) of one intersection, and two X-axis lines X (n-1) and X (n-1) and X (which are adjacent to each other so as to oppose each other). n + 1
) And the floating capacitance CZ formed between the two Y-axis bodies Y (m-1) and Y (m + 1).
Occurs almost uniformly in the XY coordinate system.

In the electrostatic field of this XY coordinate system, the user uses the fingertip 3 to determine the predetermined position coordinates (Xn, Y).
When you touch m), the X-axis lines X (n-1), Xn, X (n-1), Xn, X (n-1), Xn, X (
The total capacitance value of the stray capacitance values between n + 1) and the Y-axis line bodies Y (m-1), Ym, and Y (m + 1) is distributed.

In this response, when the drive pulse signal S4 is input to the Y-axis lines Y3, Y5 ... Y15, the voltage output with respect to the stray capacitance value is transmitted to the X-axis line.

As a result, the first signal input switches 51Y3, 51Y5 ...
When the 51Y15 is sequentially turned on, the signal input switch 61 of the position detection signal output unit 15
X3, 61X5 ... A detection output is obtained when 61X19 is on, and the coordinates (Xn, Xm)
It is output from the capacitance signal output circuit 161 as the capacitance detection signal S13 when the position is touch-operated by the fingertip 3, and is sent to the designated position detection control unit 16 as the position detection output signal S14 via the synchronous detection circuit. To.

Although not shown in particular, also in the present embodiment, as in the first embodiment, the configuration of each axis forming each loop coil and each axis functioning as a capacitance type X and Y axis electrodes By preparing a plurality of tables having different body configurations, it is possible to temporarily improve the detection accuracy of pen touch operations and finger touch operations, and change the detection speed and the detectable range.

<Structure of XY coordinate forming part>
FIG. 19 is a diagram showing a specific structure of the Y-axis portion 112 constituting the XY coordinate forming portion according to the present embodiment. According to FIG. 19, each Y-axis body Y1 ... YM constituting the Y-axis portion 112
Is linearly extended and arranged on the insulating layer portion 13 in parallel at equal intervals. Then, of the Y1 ... YM, one end of each of the Y1, Y2, Y4 ... Y (M-1), and YM is input to the first and second signals via the sensor connection lead-out unit 76. Switch 51Y, 5
It is connected to 2Y. Further, the other ends of the Y-axis wire bodies Y1 ... YM are short-circuited and connected to each other via a common signal line 57.

On the other hand, of each Y-axis body Y1 ... YM, the remaining Y-axis body, that is, the Y-axis body Y3,
One end of Y5 ... Y (M-4) and Y (M-2) is connected to the first and second signal input switches 51Y and 52Y via the sensor connection lead-out unit 76, but the other The ends are not connected to the common signal line 57 and are axial bodies independent of each other.

In this embodiment as well, the outer peripheral electrode portion 75 can be used as the Y-axis line body as in the first embodiment. Therefore, in the example shown in FIG. 19, a part of the outer peripheral electrodes functions as the Y-axis body Y1 and the Y-axis body YM, and further as the common signal line 57.

Further, in the present embodiment, a part of the Y-axis wire body constituting the Y-axis wire portion 112 is used for forming an electromagnetic induction type input loop coil, and the remaining part is a capacitance type Y.
It is used as a shaft electrode. Therefore, each Y-axis body has two long sides along the longitudinal direction 171 and two short sides connected to the first and second signal input switches 51Y, 52Y or the common signal line 57 along the lateral direction 172. In the present embodiment, each of the two long sides has a recess 173 formed periodically. As a result, each Y-axis body forms a pattern in which a plurality of diamond-shaped portions 174 are continuously connected.

FIG. 20 is an enlarged view of a part of the Y-axis portion 112 constituting the XY coordinate forming portion according to the present embodiment. According to FIG. 20, the outer peripheral electrode portion 75 is used as the Y-axis wire body Y1, that is, as the electromagnetic induction electrode forming the loop coil. Y2, which also functions as an electromagnetic induction electrode forming a loop coil, Y3, which functions as a capacitance type Y-axis electrode, Y4, which functions as an electromagnetic induction electrode forming a loop coil, and electrostatic. Y5 that functions as a capacitive Y-axis electrode, Y6 that functions as an electromagnetic induction electrode that forms a loop coil, and Y7 that functions as a capacitive Y-axis electrode are arranged side by side in the X-axis direction in parallel with each other. Has been done. Further, except for the outer peripheral electrode portion 75, in each Y-axis wire, the Y-axis wire that functions as an electromagnetic induction electrode forming a loop coil and the Y-axis wire that functions as a capacitance type Y-axis electrode alternate. Have been placed.

In the figure shown in FIG. 20, the shape of the concave portion of the long side constituting each electrode is formed in a shape and size different from the Y-axis line body shown in FIG. That is, as shown in FIG.
Each Y-axis body has an acute-angled, right-angled, or obtuse-angled edge portion 175, and the edge portions 175 having different orientations are formed in an alternately continuous wave shape.

The structure of the X-axis portion 111 is not particularly described in detail, but is the same except that each axis is extended in a direction orthogonal to the Y-axis.

FIG. 21A is a diagram showing each axis pattern when an X-axis portion 111 (not shown) is superimposed on the Y-axis portion 112 shown in FIGS. 19 and 20. As described above, each X-axis body constituting the X-axis portion 111 is configured to be orthogonal to each Y-axis body constituting the Y-axis portion 112. Further, similarly to the Y-axis portion 112, the X-axis portion 111 also has the outer peripheral electrode 17
Except for 6, the X-axis body that functions as an electromagnetic induction electrode forming a loop coil and the X-axis body that functions as a capacitance type X-axis electrode are alternately arranged.

According to FIG. 21A, there is a region 177 or the like in which the capacitance electrode of the Y-axis body portion 112 and the capacitance electrode of the X-axis body portion are adjacent to each other in the vertical direction. An electrostatic field is formed by the floating capacitance around the regions 177 and the like adjacent to each other. In the example of FIG. 21 (a), the region 177 has a shape separated into two regions 177 (a) and 177 (b), and the regions 177 (a) and 177 (b) are centered. An electrostatic field is formed in the air due to the floating capacitance.

In the present embodiment, the shape of the region 117 or the like in which the X-axis line portion 111 and the Y-axis line portion 112 are adjacent to each other in the vertical direction is also described as being separated into two places as shown in FIG. 21 (a). Of course, the shape is not limited to that. As an example, a substantially I-shaped (straight line) shape may be adopted.

As described above, the terminal device 100 and the position detection unit 110 according to the second embodiment of the present invention can also obtain the same effects as those obtained by the first embodiment. Further, in the terminal device 100 and the position detection unit 110 according to the second embodiment, each axis body that functions as an electromagnetic induction type loop coil and each axis line body that functions as each capacitance type axis electrode alternate. By being arranged in, it is possible to detect both the touch pen operation and the finger touch operation using these two detection methods.

<Overview of the Third Embodiment of the Present Invention>
A third embodiment of the present invention will be described. The description of those having the same functions as the terminal device and the position detection unit according to the first and second embodiments will be omitted. In addition, the first and second embodiments described above, and the third embodiment described below, can be combined in part or in whole as appropriate.

As shown in FIG. 22, each component constituting the terminal device 200 according to the third embodiment of the present invention is the same as the component of the terminal device 1 according to the first embodiment shown in FIG. But,
As will be described later, the configurations of the drive signal input unit 214 and the position detection signal output unit 215 and the switch management table included in the designated position detection control unit 216 are different from each other. Therefore, the selection operation of the X-axis body X1 ... XN constituting the X-axis portion 211 and the Y constituting the Y-axis portion 212 are performed.
The selection operation of the axis lines Y1 ... YM is different, and a new function is given to the terminal device 200 according to the third embodiment.

That is, in the terminal device 200 according to the third embodiment, the Y-axis lines Y1 ... Y
M is used to form an input loop coil for the electromagnetic induction method and is used as a Y-axis electrode for the capacitance method depending on the switching. Similarly, each X-axis body X1
... XN is used to form an output loop coil for the electromagnetic induction method, and is also used as an X-axis electrode for the capacitance method depending on the switching. Therefore, in addition to the first embodiment, it can be used as a capacitance type Y coordinate system electrode or X coordinate system electrode depending on the switching.

FIG. 22 is a block diagram showing the configuration of the terminal device 200 according to the third embodiment of the present invention. According to FIG. 22, the terminal device 200 according to the present embodiment includes at least a position detection unit 210, a central processing unit 20, and a display unit 30 as its components.

In the central processing unit 20, the user can set a specific position on the XY display surface of the display unit 30 on the display unit 3.
When designated by performing a pen touch operation in which the position designation tool 2 having a pen shape is brought into contact with or close to the display surface of 0, a display position detection signal S2 indicating the designated position is received from the designated position detection control unit 216. Further, in the terminal device 200 according to the present embodiment, the central processing unit 20 is a finger touch operation in which the user brings the fingertip 3 into contact with or close to the display surface of the display unit 30 at a specific position on the XY surface of the display unit 30. When designated by performing the above, the display position detection signal S2 indicating the designated position is received from the designated position detection control unit 216. The details of the position detection unit 210 will be described later.

<Position detection unit 210>
In the present embodiment, the position detection unit 210 includes a designated position detection control unit 216, an XY coordinate forming unit composed of an X-axis line unit 211, a Y-axis line unit 212, and an insulating layer 13, a drive signal output unit 214, and a position. Includes a detection signal output unit 215.

[1. Designated position detection control unit 216]
In the designated position detection control unit 216, the first and second input signal switches 51Y and 52Y connected to the Y-axis wire body 61Y constituting the Y-axis wire body 12 and the X-axis wire body 62X constituting the X-axis wire unit 11 Each axis used to form a loop coil as an electromagnetic induction method or an X-axis as a capacitance method, which controls the on / off operation of the third and fourth input signal switches 61X and 62X connected to And switching signal S10 for selecting each axis used as the Y-axis electrode.
A switch management table (FIG. 15) is provided to generate the above. Then, the designated position detection control unit 116 generates the switching signal S10 based on the switch management table, and the first and second switches are generated.
Input signal switches 51Y, 52Y and third and fourth input signal switches 61X, 62X
Controls the on / off operation of each switch.

Further, the designated position detection control unit 216 has the position detection unit 21 from the central processing unit 20.
The mode selection signal S3 for selecting whether to perform position detection (electromagnetic induction mode) by the electromagnetic induction method or position detection (capacitance mode) by the capacitance method is received. Then, based on this, each Y is in the Y-axis mode switching unit 251 provided in the drive signal input unit 214.
Y-axis mode selector switch 251Y1 ... 251YM provided corresponding to the axis body,
Mode selection signal S5 for controlling the X-axis mode changeover switches 262X1 ... 262XN provided corresponding to each X-axis body in the X-axis mode switching unit 262 provided in the position detection signal output unit 215. Is sent to the drive signal input unit 214 and the position detection signal output unit 215.

Other than the above, the functions and configurations of the designated position detection control unit described in the first and second embodiments are the same.

[2. X-axis part 211 and Y-axis part 212]
The X-axis portion 211 and the Y-axis portion 212 are as shown in FIG. 23, as in other embodiments.
They are composed of N and M axis lines, respectively, and are arranged so as to be orthogonal to each other. On the other hand, in the present embodiment, the other end side not connected to the third and fourth signal input switches 61X and 62X of each X-axis body X1 ... XN constituting the X-axis body is the X-axis mode changeover switch 262X1. ... It is connected to 262XN. Similarly, the other end side of each Y-axis wire body Y1 ... YM not connected to the first and second signal input switches 51Y and 52Y of the Y-axis wire body is the Y-axis mode changeover switch 251Y1 ... It is connected to 251YM.

That is, for example, when the Y-axis mode changeover switch connected to the other end side of the Y-axis body Y1 ... YM is turned on, the position detection unit 210 is made to function as the electromagnetic induction mode. Further, when the Y-axis line mode changeover switch connected to the other end side of the Y-axis line bodies Y1 ... YM is not turned on, the position detection unit 210 is made to function as the capacitance mode.

[3. Drive signal input unit 214]
The drive signal input unit 214 is provided on one end side of a plurality of Y-axis wire bodies constituting the Y-axis line unit 212, and the drive pulse signal S generated by the drive signal input unit 114 is provided on one end side of the plurality of Y-axis wire bodies.
Enter 4.

Specifically, the drive signal input unit 214 has a Y-axis mode switching unit 251 in addition to the components and functions included in the drive signal input units according to the first and second embodiments. The Y-axis mode switching unit 251 corresponds to each Y-axis body Y1 ... YM and is located on the other end side of the Y-axis body Y1 ... YM, that is, the first and second signal input switches 51Y and 52Y. Includes Y-axis mode selector switches 251Y1 ... 251YM connected to the opposite side to which is connected.

The drive signal input unit 214 is based on the mode selection signal S5 received from the designated position detection control unit 216, and each Y-axis mode changeover switch 251Y1 constituting the Y-axis mode switching unit 251.
... Controls the ON operation of 251YM.

Specifically, when the electromagnetic induction mode is specified by the mode selection signal S5, each Y-axis mode changeover switch 251Y1 ... 251YM is turned on, and each Y-axis body Y1
... The other ends of the YM are connected to each other. On the other hand, when the capacitance mode is specified by the mode selection signal S5, each Y-axis mode changeover switch 251Y1.
251YM is turned off so that the other ends of the respective axis bodies Y1 ... YM are arranged independently without being connected to each other.

[4. Position detection signal output unit 215]
The position detection signal output unit 215 is provided on one end side of a plurality of X-axis line bodies constituting the X-axis line unit 211, and is designated when the position designation tool 2 or the fingertip 3 specifies the XY coordinate position of the XY coordinate forming unit. The position detection signal corresponding to the coordinated position is output.

Specifically, the position detection signal output unit 215 has an X-axis mode switching unit 262 in addition to the components and functions included in the position detection signal output units according to the first and second embodiments. The X
The axis mode switching unit 262 corresponds to each X-axis body X1 ... XN, and the X-axis body X1 ...
Includes X-axis mode selector switches 262X1 ... 262XN connected to the other end of the XN, i.e. to the opposite side of the side to which the first and second signal input switches 61X, 62X are connected.

The position detection signal output unit 215 is the X-axis mode changeover switch 25 that constitutes the X-axis mode switching unit 262 based on the mode selection signal S5 received from the designated position detection control unit 216.
2X1 ... Controls the ON operation of 262XN.

Specifically, when the electromagnetic induction mode is specified by the mode selection signal S5, each X-axis mode changeover switch 262X1 ... 262XN is turned on, and each X-axis body X1
... The other ends of the XNs are connected to each other. On the other hand, when the capacitance mode is specified by the mode selection signal S5, each X-axis mode changeover switch 262X1.
262XN is turned off so that the other ends of the axes X1 ... XN are arranged independently without being connected to each other.

<Operation in position detection unit 210>
As described above, the position detection unit 210 in the present embodiment can be used by switching between two modes, the electromagnetic induction mode and the capacitance mode, based on the mode selection signal S5.

[1. Electromagnetic induction mode]
The designated position detection control unit 216 receives the mode selection signal S3 from the central processing unit 20. The central processing unit 20 determines which mode to select according to the type of application being executed in the terminal device 200, and generates a mode selection signal S3 corresponding to the mode. Upon receiving this, the designated position detection control unit 216 sends a mode selection signal S5 to the drive signal input unit 214 and the position detection signal output unit 215.

First, the drive signal input unit 214 that has received the mode selection signal S5 is the drive signal input unit 2.
Y-axis mode changeover switch 251Y1 arranged in the Y-axis mode changeover unit 251 in 14.
... Controls the ON operation of 251YM. Specifically, since the electromagnetic induction mode is selected by the central processing unit, the Y-axis mode changeover switch 251Y1 ... 251YM
Are turned on respectively. Then, the Y-axis mode changeover switch 251 ... 251Y
The other end side of each Y axis Y1 ... YM is connected via M.

Next, the designated position detection control unit 216 selects a switch management table for determining the Y-axis line body to be used based on the mode selection signal S3 generated by the central processing unit 20. In this example, since the electromagnetic induction mode is currently selected, the switch management table prepared for the electromagnetic induction mode is selected. Then, the designated position detection control unit 216 refers to the switch management table and generates the switching signal S10. First and second signal input switches 51Y and 5 arranged in the drive signal input unit 14 based on the changeover signal S10.
By controlling the on operation of 2Y, the formation of the input loop coil is controlled.

Similarly, the designated position detection control unit 216 has the third and fourth signal input switches 61X arranged in the position detection signal output unit 215 based on the changeover signal S10 generated based on the switch management table. By controlling the ON operation of 62X, the formation of the output loop coil is controlled.

The configuration of the switch management table in the electromagnetic induction mode and the processing until the position detection output signal S14 is generated by each of the formed loop coils are performed in the same manner as in the first embodiment.

[2. Capacitance mode]
The designated position detection control unit 216 receives the mode selection signal S3 from the central processing unit 20. The central processing unit 20 determines which mode to select according to the type of application being executed in the terminal device 200, and generates a mode selection signal S3 corresponding to the mode. Upon receiving this, the designated position detection control unit 216 sends a mode selection signal S5 to the drive signal input unit 214 and the position detection signal output unit 215.

First, the drive signal input unit 214 that has received the mode selection signal S5 is the drive signal input unit 2.
Y-axis mode changeover switch 251Y1 arranged in the Y-axis mode changeover unit 251 in 14.
... Turn off 251YM. Specifically, since the capacitance mode is selected by the central processing unit, the Y-axis mode selector switches 251Y1 ... 251YM are turned off, respectively. As a result, the other ends of the Y-axis bodies Y1 ... YM are not connected to each other, and independent axis bodies are formed.

Next, the designated position detection control unit 216 selects a switch management table for determining the Y-axis line body to be used in the capacitance mode based on the mode selection signal S3 generated by the central processing unit 20. In this example, the capacitance mode is currently selected, so the switch management table prepared for the capacitance mode is selected. Then, the designated position detection control unit 216 refers to the switch management table and generates the switching signal S10. Based on the switching signal S10, the first signal input switch 51Y arranged in the drive signal input unit 14 is sequentially turned on to sequentially switch the Y-axis line body into which the drive pulse signal (voltage) is input. In the capacitance mode, the second signal input switch 52Y
Is always off.

Similarly, the position detection signal output unit 215 that has received the mode selection signal S5 presses the X-axis mode changeover switches 262X1 ... 262XN arranged in the X-axis mode switching unit 262 in the position detection signal output unit 215. Turn off. Specifically, since the capacitance mode is selected by the central processing unit, the X-axis mode selector switch 262X1 ... 2
Each of the 62XNs is turned off. As a result, the other ends of the X-axis bodies X1 ... XN are not connected to each other, and independent axis bodies are formed.

Next, the designated position detection control unit 216 selects a switch management table for determining the X-axis body to be used in the capacitance mode based on the mode selection signal S3 generated by the central processing unit 20. In this example, the capacitance mode is currently selected, so the switch management table prepared for the capacitance mode is selected. Then, the designated position detection control unit 216 refers to the switch management table and generates the switching signal S10. A detection output is obtained by sequentially turning on the third signal input switch 61X based on the changeover signal S10, and a designated position detection signal S14 is generated.

Regarding the processing up to the generation of the designated position detection signal S14 in the capacitance mode,
It is the same as the process in the second embodiment. Although the switch management table for the capacitance mode is not particularly shown, the first and third signal input switches 51Y and 61
The timing at which X is turned on is specified in association with each Y-axis line body and each X-axis line body.

FIG. 24 shows an example in which each axis functions as a Y-axis electrode and an X-axis electrode in the capacitance mode. In FIG. 24, all the axial bodies are used as the Y-axis electrode and the X-axis electrode. Therefore, an electrostatic field is formed by the stray capacitance around the intersection of the Y-axis body and the X-axis body.

That is, when the drive pulse signal (voltage) S4 is input to the Y-axis lines Y1 ... YM, the voltage output with respect to the stray capacitance value is transmitted to the X-axis line. At this time, a detection output is obtained based on the voltage that changes when the user's fingertip 3 touches or approaches the XY coordinate plane, and the contact or close coordinates (Xn, Ym) are specified.

<Structure of XY coordinate forming part>
FIG. 25 is a diagram showing a specific structure of the Y-axis portion 212 constituting the XY coordinate forming portion according to the present embodiment. According to FIG. 25, each Y-axis body Y1 ... YM constituting the X-axis portion 212
Is linearly extended and arranged on the insulating layer portion 13 in parallel at equal intervals. One end of each Y-axis wire body Y1 ... YM is connected to the first and second signal input switches 51Y and 52Y via the sensor connection lead-out portion 76. The other end is connected to the Y-axis mode changeover switches 251Y1 ... 251YM via the sensor connection lead wire 273, respectively.

In this embodiment as well, the outer peripheral electrode portion 75 can be used as the Y-axis line body as in the other embodiments. Therefore, in the example shown in FIG. 25, a part of the outer peripheral electrodes functions as the Y-axis body Y1 and the Y-axis body YM.

Further, in the present embodiment, the Y-axis wire body constituting the Y-axis wire portion 212 is used as a capacitance type Y-axis electrode depending on the mode selection. Therefore, each Y-axis body is 2 in the longitudinal direction.
Two long sides along 71 and first and second signal input switches 51Y along the short side 272
, 52Y or Y-axis mode It is common in that it is composed of two short sides connected to the mode changeover switch 251. However, in the present embodiment, the two long sides each have a recess formed periodically. Have. As a result, each Y-axis body forms a pattern in which a plurality of diamond-shaped portions 174 are continuously connected.

As described above, the terminal device 200 and the position detection unit 210 according to the third embodiment of the present invention can also obtain the same effects as those obtained by the other embodiments. Further, in the terminal device 200 and the position detection unit 210 according to the third embodiment, it is possible to select whether the position detection unit functions as an electromagnetic induction mode or a capacitance mode. As a result, the position detection unit 210 is used by appropriately selecting whether to function in the electromagnetic induction mode or the capacitance mode according to the current usage state of the terminal device 200 (type of application being executed, etc.). Will be possible.

When selecting such a mode, the international patent application PCT / JP2013 / 00
It is performed in the same manner as 7081. Therefore, the international patent application PCT / JP2013 / 0070
The content described in 81 is incorporated herein by reference in its entirety.

1 Terminal device 10 Position detection unit 11 X-axis line part 12 Y-axis line part 14 Drive signal input unit 15 Position detection signal output unit 16 Designated position detection control unit 20 Central processing unit 30 Display unit

Claims (11)

An XY coordinate forming unit having a configuration in which an X-axis line body composed of a plurality of line bodies and a Y-axis line body composed of a plurality of line bodies intersect each other,
A drive signal input unit provided on one end side of the plurality of Y-axis wire bodies and inputting a drive input signal to one end side of the plurality of Y-axis wire bodies,
Position detection signal output provided on one end side of the plurality of X-axis lines and outputting a position detection signal corresponding to the specified coordinate position when the position designation tool specifies the XY coordinate position of the XY coordinate forming unit. Department and
A position detection unit that includes
One end of the plurality of Y-axis wires is connected to the drive signal input unit, and the other end is short-circuited.
The drive signal input section, viewed contains a Y Jikusentai selection unit for selecting at least two Y-axis body to form an input loop coil from the plurality of Y-axis thereof,
The Y-axis body selection unit includes a first selection unit that enables selection of any two or more Y-axis line bodies to which the drive input signal is input from the plurality of Y-axis lines, and the first selection unit. Of any two or more Y-axis lines forming at least one input loop coil together with the Y-axis line body selected by the first selection unit from the plurality of Y-axis line bodies excluding the Y-axis line body selected by. Includes a second selection that allows selection,
The position detection unit. The drive signal input section, at least a combination of different Y-axis body and two Y-axis member forming the input loop coil formed by the Y-axis member selector, for a different input from the input loop coils The position detection unit according to claim 1 , wherein a loop coil is formed. One end of the plurality of X-axis lines is connected to the position detection signal output unit, and the other end is short-circuited.
The position detection signal output unit, viewed contains at least X Jikusentai selector for selecting two X axis body forming the output loop coil from the plurality of X-axis member,
The X-axis body selection unit is composed of a third selection unit that enables selection of any two or more X-axis body bodies for which position detection signals are output from the plurality of X-axis line bodies, and the third selection unit. Selection of any two or more X-axis bodies forming at least one output loop coil together with the X-axis body selected by the third selection unit from the plurality of X-axis bodies excluding the selected X-axis body. fourth selection portion and the including, the position detection unit according to any one of claims 1 or 2, characterized in that to enable. When the position specifying tool specifies the XY coordinate position of the XY coordinate forming unit, the position detecting unit sends an input signal input from the input loop coil to the output loop via the position specifying tool. The position detection unit according to claim 3 , wherein the position detection signal is output from the position detection signal output unit by transmitting the signal to the coil. The position detection unit according to claim 1, wherein the drive signal input unit sequentially switches at least two Y-axis lines selected by the Y-axis body selection unit at a predetermined cycle. The position detection unit includes a designated position detection control unit that sends a switching signal for selecting at least two Y-axis lines forming the input loop coil to the drive signal input unit. The position detection unit according to claim 1. The position according to claim 6 , wherein the designated position detection control unit generates the switching signal based on a table in which at least two Y-axis lines forming the input loop coil are stored in advance. Detection unit. The position detection unit according to claim 7 , wherein the position detection unit has a plurality of tables in which at least two combinations of Y-axis lines forming the input loop coil are different from each other. In addition to the position detection by the electromagnetic induction method, the position detection unit outputs the position detection signal by transmitting the input signal input to the input loop coil to the output loop coil via the position designation tool. Therefore, it is possible to detect a position by a capacitance method that outputs a position detection signal based on a change in stray capacitance that occurs between the plurality of Y-axis lines and the plurality of X-axis lines. The position detection unit according to claim 3. When the position detection unit performs position detection by the capacitance method, the position detection unit is at least among the plurality of X-axis lines and the plurality of Y-axis lines constituting the XY coordinate forming unit. The position detection unit according to claim 9 , wherein the two X-axis lines and at least two Y-axis lines are used as the capacitance type X-axis electrode and the Y-axis electrode. The position detection unit according to any one of claims 1 to 10.
A central processing unit that processes information based on the position detection signal output from the position detection unit, and
Terminal devices including.

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