Input device

Abstract

The purpose of the present invention is to improve the degree of freedom in the arrangement of a mounted structure and suppress the occurrence of specification restrictions. Provided is an input device provided with a sensor panel having a first position detection unit, the first position detection unit having a base portion, a plurality of sensor electrodes, and a plurality of wires, the base portion having a first layer portion, a folded portion connected to the first layer portion and the second layer portion, and a second layer portion connected to the folded portion. The first layer section and the second layer section are arranged so as to overlap each other in a plan view of the sensor panel, each of the sensor electrodes is provided on the first layer section, each of the wirings is connected to each of the sensor electrodes, and each of the wirings is provided so as to extend from the folded section to the second layer section.

Description

Technical Field

[0001] The present invention relates to input devices. Background Art

[0002] Patent document 1 proposes an input device having a position detection unit configured to detect an indicated position. In Patent document 1, the position detection unit has a plurality of sensor electrodes formed of a conductor and wiring connected to each sensor electrode and through which a detection signal flows. In addition, the wiring is routed to a predetermined position of the input device and then connected to a control substrate of the input device.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2021-33543 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the input device, various structures such as a position detection unit and a control substrate are mounted inside the outer shell of the input device. These structures are arranged in a limited space inside the outer shell of the input device, so there is a case where the specifications of the input device, such as the width of the frame of a tablet-type input device, are restricted by the arrangement positions of these structures.

[0008] The present invention has been made in view of such circumstances, and an object of the present invention is to increase the degree of freedom in arrangement of the mounted structure and to suppress the occurrence of restrictions in specifications.

[0009] Means for solving problems

[0010] According to the present invention, there is provided an input device having the following structure.

[0011] [1] An input device comprises a sensor panel, wherein the sensor panel has a first position detection portion, the first position detection portion has a base, a plurality of sensor electrodes and a plurality of wirings, the base has a first layer portion, a folded portion and a second layer portion, the folded portion is connected to the first layer portion and the second layer portion, the first layer portion and the second layer portion are arranged in a manner overlapping each other when the sensor panel is viewed from above, each of the sensor electrodes is arranged on the first layer portion, each of the wirings is connected to each of the sensor electrodes, and each of the wirings is arranged in a manner extending from the folded portion to the second layer portion.

[0012] According to the present invention, the second layer portion is provided so as to overlap with the first layer portion in a plan view of the sensor panel, thereby improving the degree of freedom in arrangement of the mounted structure and suppressing the occurrence of restrictions in specifications.

[0013] Various embodiments of the present invention are described below. The embodiments described below can be combined with each other.

[0014] [2] An input device according to [1], wherein the plurality of wirings have a wiring collection portion, in which the wirings extend in a manner having a component in a direction orthogonal to a direction parallel to an extension direction of the sensor electrode, and the wiring collection portion is provided in the second layer portion or the folded portion.

[0015] [3] The input device according to [2], wherein the second layer portion includes a control substrate, the line collection portion and the control portion are provided on the control substrate, and the line collection portion is connected to the control portion.

[0016] [4] An input device according to [2], wherein the second layer portion has a connecting portion and a control substrate, the connecting portion is a flexible substrate, the wiring collection portion is arranged at the connecting portion, a control portion is arranged on the control substrate, and the wiring collection portion extending from the connecting portion is connected to the control portion.

[0017] [5] The input device according to any one of [1] to [4], wherein the first layer portion and the folding portion are formed by independent components, and the folding portion is formed by a flexible substrate.

[0018] [6] The input device according to [5], wherein the base has a plurality of independent folded portions, and each of the folded portions is crimped and connected to the first layer portion and the second layer portion.

[0019] [7] The input device according to [2], wherein the second layer portion has a connecting portion and a control substrate, the first layer portion, the folding portion and the connecting portion are composed of the same components, and the wire collection portion is provided at the folding portion or the connecting portion.

[0020] [8] An input device according to any one of [1] to [7], wherein the sensor electrode has a plurality of first sensor electrodes and a second sensor electrode, and the plurality of wirings have a plurality of first wirings and a second wiring, each of the first sensor electrodes is arranged on a surface on one side of the first layer portion, and each of the second sensor electrodes is arranged on a surface on the other side of the first layer portion, the first layer portion has an edge portion, both the folding portion and the second layer portion are arranged on the edge portion, and the first wiring or the second wiring extends in the folding portion and the second layer portion.

[0021] [9] An input device according to [8], wherein the first layer portion has a first edge portion and a second edge portion as the edge portion, the first wiring extends in the folded portion and the second layer portion corresponding to the first edge portion, and the second wiring extends in the folded portion and the second layer portion corresponding to the second edge portion, and when the sensor panel is viewed from above, the second layer portion corresponding to the first edge portion and the second layer portion corresponding to the second edge portion do not overlap.

[0022]

[10] An input device according to any one of [1] to [9], wherein the input device further comprises a shielding portion, and the sensor panel further comprises a second position detecting portion, wherein the first position detecting portion is configured to detect a position by electrostatic coupling, and the second position detecting portion is configured to detect a position by electromagnetic induction, and comprises a plurality of sensor coils, and the first layer portion, the sensor coils of the second position detecting portion, the shielding portion, and the second layer portion are arranged in a stacked manner.

[0023]

[11] An input device comprising a sensor panel, wherein the sensor panel has a first position detection portion and a second position detection portion, the first position detection portion being configured to detect a position by electrostatic coupling, and the first position detection portion having a base, a plurality of first sensor electrodes and a second sensor electrode, and a plurality of first wirings and a second wiring, each of the first sensor electrodes being a receiving electrode arranged to extend in a first direction, and each of the second sensor electrodes being a transmitting electrode arranged to extend in a second direction intersecting the first direction, each of the first sensor electrodes and each of the first wirings being arranged on a surface on one side of the base, and each of the second sensor electrodes and each of the second wirings being arranged on a surface on the other side of the base, each of the first wirings being connected to each of the first sensor electrodes, and each of the second wirings being connected to each of the second sensor electrodes, the plurality of first wirings having a first wiring collection portion, and the plurality of second wirings having a second wiring collection portion, in which the first wirings are arranged in a manner having a relative position to the first direction. The second wiring extends in a manner having a component in a direction orthogonal to a direction parallel to the second direction, and in the second wiring collection part, the second wiring extends in a manner having a component in a direction orthogonal to a direction parallel to the second direction. The second position detection part is configured to be able to detect the position by electromagnetic induction, and the second position detection part has a plurality of first and second sensor coils, each of the first sensor coils is arranged in a manner extending in the first direction, and each of the second sensor coils is arranged in a manner extending in the second direction. The plurality of first sensor coils include a first outer sensor coil arranged closest to the second wiring collection part in the second direction, and the plurality of second sensor coils include a second outer sensor coil arranged closest to the first wiring collection part in the first direction, satisfying at least one of the following (1) and (2): (1) a gap of 28 mm or more is left between the first wiring collection part and the second outer sensor coil, and (2) a gap of 28 mm or more is left between the second wiring collection part and the first outer sensor coil.

[0024]

[12] An input device according to

[11] , wherein, when a gap of more than 28 mm is left between the first wiring collection portion and the second outer sensor coil, the second outer sensor coil has an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and for supplying current in a direction opposite to the inner coil portion, and when the sensor panel is viewed from above, at least a portion of the first wiring collection portion is arranged to overlap with a center position between the inner coil portion and the outer coil portion.

[0025]

[13] An input device comprising a sensor panel and a metal chassis, wherein the sensor panel has first and second position detection units, the first position detection unit is configured to detect a position by electrostatic coupling, and the first position detection unit has a base, a plurality of first and second sensor electrodes, and a plurality of first and second wirings, each of the first sensor electrodes is a receiving electrode arranged to extend in a first direction, and each of the second sensor electrodes is a transmitting electrode arranged to extend in a second direction intersecting the first direction, each of the first sensor electrodes and each of the first wirings is arranged on a surface on one side of the base, and each of the second sensor electrodes and each of the second wirings is arranged on a surface on the other side of the base, each of the first wirings is connected to each of the first sensor electrodes, and each of the second wirings is connected to each of the second sensor electrodes, and the plurality of first wirings have a first collection The second position detecting unit is configured to detect the position by electromagnetic induction, and the second position detecting unit has a plurality of first sensor coils and second sensor coils, each of the first sensor coils is arranged to extend in the first direction, each of the second sensor coils is arranged to extend in the second direction, each of the first sensor coils and each of the second sensor coils is arranged on the inner side of the chassis, and at least one of the first and second wiring hubs is arranged on the outer side of the chassis when the sensor panel is viewed from above.

[0026]

[14] An input device comprising a sensor panel, wherein the sensor panel has a first position detection portion and a second position detection portion, the first position detection portion being configured to detect a position by electrostatic coupling, and the first position detection portion having a base, a plurality of first sensor electrodes and a second sensor electrode, and a plurality of wirings, each of the first sensor electrodes being a receiving electrode arranged to extend in a first direction, and each of the second sensor electrodes being a transmitting electrode arranged to extend in a second direction intersecting the first direction, each of the first sensor electrodes and each of the wirings being arranged on a surface on one side of the base, and each of the second sensor electrodes being arranged on a surface on the other side of the base, each of the wirings being connected to each of the first sensor electrodes, and the plurality of wirings having a wiring collection portion in which the wirings are arranged to have a connection relative to the first direction. The second position detecting unit extends in a manner that is a component of a direction orthogonal to a parallel direction, the second position detecting unit is configured to detect a position by electromagnetic induction, and the second position detecting unit has a plurality of first sensor coils and second sensor coils, each of the first sensor coils is arranged in a manner that extends in the first direction, and each of the second sensor coils is arranged in a manner that extends in the second direction, the plurality of second sensor coils has an outer sensor coil that is arranged closest to the collection line portion in the first direction, the outer sensor coil has an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and supplying current to flow in a direction opposite to the inner coil portion, and when looking down at the sensor panel, at least a portion of the collection line portion is configured to overlap with a center position between the inner coil portion and the outer coil portion.

[0027]

[15] The input device according to

[14] , wherein, when the sensor panel is viewed from above, the entirety of the line collection portion is arranged between the inner coil portion and the outer coil portion.

[0028]

[16] An input device comprising a sensor panel and a control substrate provided with a control unit, wherein the sensor panel has a first position detection unit and a second position detection unit, the first position detection unit is configured to detect a position by electrostatic coupling, and the first position detection unit has a base, a plurality of first sensor electrodes and a second sensor electrode, and a plurality of wirings, each of the first sensor electrodes is a receiving electrode provided in a manner extending in the first direction, and each of the second sensor electrodes is a transmitting electrode provided in a manner extending in a second direction intersecting the first direction, each of the first sensor electrodes and each of the wirings is provided on a surface on one side of the base, and each of the second sensor electrodes is provided on a surface on the other side of the base, each of the wirings is connected to each of the first sensor electrodes, and the plurality of wirings have a wiring collection portion, in which the wirings are arranged in a manner having a direction orthogonal to a direction parallel to the first direction. The control unit is configured to calculate the position based on the difference of signals flowing in the wiring forming the wiring collection part, the second position detection unit is configured to be able to detect the position by electromagnetic induction, and the second position detection unit has a plurality of first sensor coils and second sensor coils, each of the first sensor coils is arranged in a manner extending in the first direction, each of the second sensor coils is arranged in a manner extending in the second direction, the plurality of second sensor coils have an outer sensor coil arranged closest to the wiring collection part in the first direction, the outer sensor coil has an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and supplying current to flow in a direction opposite to the inner coil portion, and when the sensor panel is viewed from above, the wiring collection part is configured to overlap with one of the inner coil portion and the outer coil portion.

[0029]

[17] The input device according to

[16] , wherein the line collection portion is configured to overlap only one of the inner coil portion and the outer coil portion when the sensor panel is viewed from above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective view of the input device 100 according to the first embodiment.

[0031] Figure 2 yes Figure 1 An exploded perspective view of the input device 100 is shown.

[0032] exist Figure 3 middle, Figure 3 A is Figure 1 An end view of the input device 100 in the xz plane is shown. Figure 3 B is Figure 3A is an enlarged view of the area B shown.

[0033] Figure 4 FIG. 2 shows a state where the first layer portion 2A, the folded portions 2B1, 2B2, and the connecting portions 2C1, 2C2 are unfolded into a planar shape. Figure 4 , a portion of the receiving electrode 3B and the transmitting electrode 3A are shown, and although the description is omitted, the receiving electrode 3B is arranged in a plurality in the x direction, and the transmitting electrode 3A is arranged in a plurality in the y direction. Figure 4 In FIG. 1 , the receiving electrode 3B disposed on the back surface of the first layer portion 2A is indicated by a dotted line.

[0034] Figure 5 This is a perspective view of the sensor panel 101 , the chassis 102 , and the overall control substrate 22 as viewed from the bottom surface side.

[0035] Figure 6 It is a bottom view of the sensor panel 101 , the chassis 102 , and the overall control substrate 22 .

[0036] Figure 7 It is a top view of coil substrate 12A.

[0037] Figure 8 is a functional block diagram of the input device 100 .

[0038] Fig. 9 It is a development view for explaining the structure of Modification 1 of the first embodiment.

[0039] Fig.10 It is a development view for explaining the structure of Modification 2 of the first embodiment.

[0040] exist Fig.11 middle, Fig.11 A is a development view for explaining the structure of Modification 3 of the first embodiment. Fig.11 B is with Fig.11 A is an expanded view of Modification 3 with a different structure.

[0041] exist Fig.12 middle, Fig.12 A is an end view of the input device 100 according to Modification 4 (the input device 100 not including the display device 21 ) on the xz plane. Fig.12 B is Fig.12 A is an enlarged view of the area B shown.

[0042] Fig.13 It is a development view for explaining the structure of Modification 5 of the first embodiment.

[0043] Fig.14 It is a development view for explaining the structure of Modification Example 6 of the first embodiment.

[0044] exist Fig.15 middle, Fig.15 A and Fig.15 B is a development view for explaining the structure of the second embodiment, showing a state where the first layer portion 2A, the folded portions 2B1, 2B2, and the connecting portions 2C1, 2C2 are developed into a planar shape. Fig.15 In A, the positional relationship between the receiving electrode 3B formed on the lower surface side of the base 2, the x-direction coil 13A, etc. is schematically shown. Fig.15 In B, the positional relationship between the transmission electrode 3A, the y-direction coil 13B, and the like formed on the upper surface side of the base 2 is schematically shown.

[0045] Fig.16 yes Fig.15 A is an end view of the line collection portion 4b and the like of the wiring 4B taken on the yz plane.

[0046] Fig.17 It is an end view of the yz plane of the line collection portion 4b of the wiring 4B and the like for explaining the structure of the third embodiment.

[0047] Fig.18 It is a diagram for explaining the structure of the fourth embodiment, and shows the positional relationship of the line collection portion 4b of the wiring 4B and the like.

[0048] Fig.19 It is a diagram for explaining the structure of the fifth embodiment, and shows the positional relationship of the line collection portion 4b of the wiring 4B and the like.

[0049] Fig. 20 The figure shows the level of electromagnetic noise applied to the measuring wire when a measuring wire extending parallel to the y direction and imitating the line gathering portion 4 b is arranged close to the y direction coil 13B and the position of the measuring wire is scanned in the x direction when current flows in the y direction coil 13B. DETAILED DESCRIPTION

[0050] Hereinafter, the embodiments will be described based on the drawings. Various features shown in the embodiments shown below can be combined with each other. In addition, each feature can independently establish the invention.

[0051] 1 First Implementation

[0052] 1-1 Description of the Structure of the First Embodiment

[0053] like Figure 1As shown, the input device 100 of the first embodiment is a thin and rectangular tablet-type electronic device. It should be noted that the input device 100 is not limited to a tablet-type electronic device, and may also be a device smaller than a tablet-type electronic device (for example, a smart phone), a personal computer with a position detection function on the display screen, etc.

[0054] like Figure 2 As shown, the input device 100 includes a sensor panel 101 , a chassis 102 , a shield 103 , a front member 104 , and an outer shell 105 .

[0055] In the following description, for convenience, the stacking direction of the structure of the sensor panel 101 is defined as the up-down direction or the z direction. In addition, a plane parallel to the front member 104 is defined as a reference plane, and an xy coordinate system is defined as an orthogonal coordinate system of the reference plane.

[0056] 1-1-1 Sensor Panel 101

[0057] like Figure 2 As shown, the sensor panel 101 includes a first position detection unit 1 having a function of detecting the position of a human body (finger), a second position detection unit 11 having a function of detecting the position of an electronic pen, a display device 21 having a function of displaying an image, and an overall control substrate 22.

[0058] It should be noted that, in the first embodiment, the first position detection unit 1 is configured to detect a position by electrostatic coupling, and the second position detection unit 11 is configured to detect a position by electromagnetic induction. In addition, in the first embodiment, the first layer 2A, the sensor coil 13 of the second position detection unit 11, the shielding unit 103, and the second layer 2C described later are arranged in a sequentially stacked manner. The structure of the sensor panel 101 is described in detail below.

[0059] 1-1-1-1 First position detection unit 1

[0060] like Figure 3 A~ Figure 4 As shown, the first position detecting unit 1 includes a base 2 , a sensor electrode 3 including a transmitting electrode 3A and a receiving electrode 3B, and wiring 4 .

[0061] <Base 2>

[0062] like Figure 4~Figure 6As shown in the figure, the base 2 includes a first layer portion 2A which is a film-like member fm, a folded portion 2B which is composed of a part of the flexible substrate fb, and a second layer portion 2C which has the other part of the flexible substrate fb. The flexible substrate fb constituting the second layer portion 2C is connected to the control substrate 2C3 via, for example, a connector (not shown). The film-like member fm, the flexible substrate fb, and the control substrate 2C3 described here are composed of mutually independent members.

[0063] First layer 2A

[0064] like Figure 4 As shown, the first layer 2A is composed of a film-like member fm, and the sensor electrodes 3 and the wirings 4 are arranged on the upper and lower surfaces of the first layer 2A. It should be noted that the sensor electrodes 3 and the wirings 4 can be formed using, for example, photolithography technology. That is, after the metal surface is formed on the base 2, a part of the metal surface can be removed using a mask so that the metal surface is patterned into a desired shape to form the sensor electrodes 3 and the wirings 4.

[0065] The first layer 2A is arranged on the upper surface side (front member 104 side) of the second layer 2C. When the sensor panel 101 is viewed from above, the first layer 2A is arranged to overlap with the second layer 2C. Specifically, when the sensor panel 101 is viewed from above, the second layer 2C is arranged on the inner side of the edge (outer edge) of the first layer 2A. The first layer 2A and the second layer 2C are arranged in parallel, and the display device 21 is arranged between the first layer 2A and the second layer 2C.

[0066] like Figure 4 As shown, the top view shape of the first layer 2A is a rectangular shape (rectangular in the embodiment) with four edges. Specifically, the first layer 2A has a set of edges 2A1 and a set of edges 2A2. In the first embodiment, the edge 2A1 is shorter than the edge 2A2, but the relationship between their lengths can also be opposite or equal. The edge 2A1 and the edge 2A2 can be defined as the position where the base 2 starts to bend (bend).

[0067] It should be noted that one of the edge 2A1 and the edge 2A2 corresponds to the first edge, and the other corresponds to the second edge.

[0068] The transmitting electrode 3A of the sensor electrode 3 is arranged on the upper surface of the first layer 2A, and the receiving electrode 3B of the sensor electrode 3 is arranged on the lower surface of the first layer 2A. It should be noted that the transmitting electrode 3A may be arranged on the lower surface of the first layer 2A, and the receiving electrode 3B may be arranged on the upper surface of the first layer 2A. In addition, the wiring 4 connected to the sensor electrode 3 (the transmitting electrode 3A and the receiving electrode 3B) is arranged on the first layer 2A. It should be noted that the wiring 4 extends across the first layer 2A, the folded portion 2B, and the second layer 2C.

[0069] Folding part 2B

[0070] Figure 4 and Figure 5 The folded portion 2B shown is composed of a part of a flexible substrate fb, which is thinner than the film-like member fm constituting the first layer portion 2A, and is therefore more flexible than the film-like member fm constituting the first layer portion 2A. The flexible substrate fb can be composed of, for example, polyimide, liquid crystal polymer, etc. The folded portion 2B (flexible substrate fb) and the first layer portion 2A (film-like member fm) can be connected by, for example, crimping. Here, as crimping, for example, ACF crimping (anisotropic conductive film crimping) can be used.

[0071] like Figure 3 B~ Figure 5 As shown, the folding portion 2B is a bent portion in the base 2, and the folding portion 2B is connected to the first layer 2A and the second layer 2C. Specifically, the upper portion of the folding portion 2B is connected to the first layer 2A, and the lower portion of the folding portion 2B is connected to the second layer 2C. The folding portion 2B has folding portions 2B1 and 2B2 that are independent of each other. Specifically, the folding portion 2B1 is connected to the edge 2A1, and the folding portion 2B2 is connected to the edge 2A2, and the folding portions 2B1 and 2B2 are separated from each other. The wiring 4A connected to the transmitting electrode 3A is arranged on the folding portion 2B1, and the wiring 4B connected to the receiving electrode 3B is arranged on the folding portion 2B2.

[0072] The folded portions 2B1 and 2B2 extend in the z direction (the stacking direction of the front member 104 and the first position detection unit 1). The cross-sectional shape of the folded portion 2B1 parallel to the extending direction of the corresponding electrode (transmitting electrode 3A) may be, for example, a shape extending linearly in the z direction or a shape bent into an arc as a whole. The same is true for the folded portion 2B2.

[0073] ·Second layer 2C

[0074] like Figure 5 and Figure 6As shown, the second layer portion 2C has connecting portions 2C1, 2C2 and a control substrate 2C3. The connecting portion 2C1 is a portion connecting the folded portion 2B1 and the control substrate 2C3, and the connecting portion 2C2 is a portion connecting the folded portion 2B2 and the control substrate 2C3.

[0075] The connecting parts 2C1 and 2C2 are other parts of the flexible substrate fb constituting the folding part 2B. The control substrate 2C3 can be constituted by, for example, a rigid substrate (a substrate without flexibility). The connecting parts 2C1 and 2C2 and the control substrate 2C3 can be connected via, for example, a connector (not shown).

[0076] exist Figure 6 The control substrate 2C3 shown is provided with a control unit 2C4 composed of an integrated circuit such as wiring 4. The control unit 2C4 has a transmission circuit and a receiving circuit for transmitting a signal for detecting the touch of a finger. The transmission circuit of the control unit 2C4 is electrically connected to the transmission electrode 3A, and the receiving circuit of the control unit 2C4 is electrically connected to the receiving electrode 3B. As the transmission signal for detecting the touch of a finger, for example, a spread spectrum code can be used. The transmission signal sent from the transmission circuit of the control unit 2C4 to the transmission electrode 3A is received by the receiving circuit of the control unit 2C4 via the static capacitance between the receiving electrode 3B and the transmission electrode 3A and the receiving electrode 3B. At the position touched by the finger, the cross capacitance is reduced because a part of the electric flux from the transmission electrode 3A to the receiving electrode 3B is transferred from the transmission electrode 3A to the finger, so the level of the reception signal of the receiving electrode 3B corresponding to the touch position becomes low. The control unit 2C4 detects the change of the reception signal as a touch signal of the finger. The control unit 2C4 outputs the detected position information to the overall control unit 22A of the overall control substrate 22. The control board 2C3 of the second layer 2C is provided with a line collection portion 4b of the wiring 4 described later. In the example of the first embodiment, the plan view shape of the control board 2C3 is substantially L-shaped, but the present invention is not limited thereto and any shape can be set.

[0077] When the sensor panel 101 is viewed from above, in the second layer portion 2C, the flexible substrate fb corresponding to (connected to) the edge portion 2A1 and the flexible substrate fb corresponding to (connected to) the edge portion 2A2 do not overlap, thereby avoiding interference between the flexible substrates fb. Specifically, a cutout portion 2C5 (avoidance portion) for avoiding interference is provided at the ends of the connecting portions 2C1 and 2C2, so that the flexible substrates fb do not overlap each other when bent. In other words, when the flexible substrate fb is bent, the cutout portion 2C5 of the connecting portion 2C1 and the cutout portion 2C5 of the connecting portion 2C2 are separated in the xy plane.

[0078] <Sensor electrode 3>

[0079] The sensor electrode 3 includes a plurality of transmitting electrodes 3A extending in the x direction and a plurality of receiving electrodes 3B extending in the y direction. When the sensor panel 101 is viewed from above, the transmitting electrodes 3A and the receiving electrodes 3B intersect in an orthogonal manner. The transmitting electrodes 3A and the receiving electrodes 3B are capacitively coupled at their intersections via an insulating substrate (specifically, an insulating film or glass). The sensor electrode 3 can be formed of a transparent electrode in a manner that allows light from the display device 21 to pass through. In addition, the shape of the sensor electrode 3 is not particularly limited, and is formed in a plate shape in the first embodiment, but can also be formed in a mesh shape.

[0080] <Wiring 4>

[0081] like Figure 4 As shown, the first position detection unit 1 has a plurality of wirings 4. Each wiring 4 is connected to each electrode of the sensor electrode 3. Each wiring 4 is provided so as to extend across the first layer 2A, the folded portion 2B, and the second layer 2C. The plurality of wirings 4 include a plurality of wirings 4A connected to the transmitting electrode 3A and a plurality of wirings 4B connected to the receiving electrode 3B. Here, the plurality of wirings 4A can be divided into two parts as described below. That is, as Figure 4~Figure 6 As shown, the plurality of wirings 4A have a non-concentrated portion 4a and a concentrated portion 4b. Similarly, the plurality of wirings 4B also have a non-concentrated portion 4a and a concentrated portion 4b.

[0082] Non-cable section 4a

[0083] In the non-concentrated portion 4 a , the wiring 4 extends linearly from the electrodes (the transmission electrode 3A and the reception electrode 3B).

[0084] First, the structure of the wiring 4A will be described. The wiring 4A extends parallel to the x direction in the first layer portion 2A. Furthermore, the wiring 4A extends parallel to the z direction in the folded portion 2B1. Furthermore, the wiring 4A extends parallel to the x direction in the second layer portion 2C.

[0085] Next, the structure of the wiring 4B will be described. The wiring 4B extends parallel to the y direction in the first layer portion 2A. Furthermore, the wiring 4B extends parallel to the z direction in the folded portion 2B2. Furthermore, the wiring 4B extends parallel to the y direction in the second layer portion 2C.

[0086] ·Wire collection part 4b

[0087] In the line collection part 4b, the wiring 4 extends so as to have a component in a direction orthogonal to a direction parallel to the extending direction of the electrodes (transmitting electrodes 3A and receiving electrodes 3B). In the first embodiment, the line collection part 4b is provided in the control substrate 2C3 in the second layer part 2C.

[0088] The wiring 4A connected to the transmission electrode 3A extends in the line collection portion 4 b so as to have a component in the y direction orthogonal to the x direction in which the transmission electrode 3A extends.

[0089] The wiring 4B connected to the reception electrode 3B extends in the line collection portion 4 b so as to have a component in the x direction orthogonal to the y direction in which the reception electrode 3B extends.

[0090] The line collection part 4b is a part where the wirings 4 are gathered. That is, the interval between adjacent wirings 4 at the line collection part 4b is narrower than the interval between adjacent wirings 4 at the first layer part 2A. That is, among the wirings 4, the interval between the wirings 4 at the line collection part 4b is narrower than the interval between the wirings 4 at the part in contact with the sensor electrodes (transmitting electrodes 3A and receiving electrodes 3B).

[0091] 1-1-1-2 Second Position Detection Unit 11

[0092] like Figure 5~Figure 7 As shown in FIG. 1 , the second position detection unit 11 includes a substrate 12, a sensor coil 13, and wiring 14. The second position detection unit 11 is configured to be able to detect the position of an electronic pen (not shown) and the writing pressure of the electronic pen.

[0093] It should be noted that the digital pen includes a resonance circuit having a coil and a capacitor, a variable capacitance capacitor whose capacitance changes according to the writing pressure of the digital pen, and the like. In the first embodiment, the digital pen does not need to include a battery.

[0094] <Substrate 12>

[0095] like Figure 5~Figure 7 As shown, the substrate 12 includes a coil substrate 12A, a flexible substrate 12B, and a control substrate 12C.

[0096] The sensor coil 13 and the wiring 14 are provided on the coil substrate 12A, and the coil substrate 12A can be formed of a resin material such as glass epoxy resin.

[0097] The flexible substrate 12B is connected to the coil substrate 12A and the control substrate 12C, and is provided with wiring 14. The flexible substrate 12B is taken out from a slit (not shown) formed in the chassis 102, and extends toward the control substrate 12C located at the lower layer.

[0098] The control substrate 12C is provided with a wiring 14 and a control unit 12D constituted by an integrated circuit. An AC signal having a frequency equal to the resonant frequency of the resonant circuit of the electronic pen is transmitted from the control unit 12D to the electronic pen through the sensor coil 13. In the electronic pen, electromagnetic induction coupling is performed with respect to the sensor coil 13. In the resonant circuit of the electronic pen, the AC signal from the sensor coil 13 is received, and the received AC signal is fed back from the resonant circuit of the electronic pen to the sensor coil 13. The control unit 12D receives the feedback signal from the electronic pen through the sensor coil 13. Furthermore, the control unit 12D can calculate the position of the pen tip of the electronic pen based on the distribution of the levels of the received signals at the plurality of sensor coils 13.

[0099] In addition, in the electronic pen, the capacitance of the variable capacitor built into the electronic pen changes according to the writing pressure applied to the pen tip, and the frequency of the AC signal fed back to the sensor coil 13 changes. In the control unit 12D, the received AC signal is synchronously detected using the signal of the transmission frequency, and the change in the wave number (phase change) of the AC signal is detected, thereby being able to detect the writing pressure applied to the pen tip of the electronic pen.

[0100] <Sensor coil 13>

[0101] like Figure 7 As shown in FIG. 1 , the sensor coil 13 includes a plurality of x-direction coils 13A extending in the x-direction and a plurality of y-direction coils 13B extending in the y-direction. When the sensor panel 101 is viewed from above, the extending directions of the x-direction coils 13A and the extending directions of the y-direction coils 13B intersect orthogonally. Figure 7 In the figure, the x-direction coil 13A and the y-direction coil 13B are schematically shown, but the x-direction coil 13A and the y-direction coil 13B can be configured by being wound into a ring shape a plurality of times.

[0102] <Wiring 14>

[0103] The second position detection unit 11 includes a plurality of wirings 14. Each wiring 14 is connected to each coil of the sensor coil 13. Each wiring 14 is provided so as to extend to the control substrate 12C via the coil substrate 12A and the flexible substrate 12B.

[0104] 1-1-1-3 Display device 21

[0105] Figure 2 and Figure 3 The display device 21 shown in B can be constituted by a display such as a liquid crystal display, an organic EL display, or an electronic paper. In the display device 21, a large number of pixels are arranged in a matrix in the x direction and the y direction.

[0106] 1-1-1-4 Overall control board 22

[0107] exist Figure 5 and Figure 6 The overall control substrate 22 shown in the figure is provided with an overall control unit 22A composed of, for example, a processor and a memory. Figure 8 As shown, the overall control unit 22A is configured to be able to control various electronic devices including the control unit 2C4 of the first position detection unit 1 , the control unit 12D of the second position detection unit 11 , and the display device 21 , and supply power.

[0108] The data of the first position detection unit 1 and the second position detection unit are sent to a host (PC: personal computer) via, for example, a communication unit (e.g., USB). In addition, in the host, various applications such as a drawing application are executed, in which drawing processing based on the data of the first position detection unit 1 and the second position detection unit 11 is performed to generate display image data. The display image data is output from the host to a display via a communication unit (e.g., HDMI (registered trademark), USB-C). It should be noted that in the embodiment, as described above, it is assumed that the host executes various drawing applications, but this is not limited to this, and the input device 100 itself (including the control substrate 22 itself) may also be configured to be able to execute the various applications.

[0109] 1-1-2 Base frame 102

[0110] Figure 2 , Figure 3 B. Figure 5 and Figure 6 The chassis 102 shown is a housing disposed in the front member 104 and the outer shell 105, and is provided with the first position detection unit 1 and the second position detection unit 11, the display device 21, and the shielding unit 103. The chassis 102 can be made of resin or metal.

[0111] The display device 21, the coil substrate 12A of the second position detection unit 11, and the shielding unit 103 are accommodated in the chassis 102. In addition, the control substrate 2C3 of the first position detection unit 1, the control substrate 12C of the second position detection unit 11, and the unified control substrate 22 are provided on the back side of the chassis 102. The control substrate 2C3, the control substrate 12C, and the unified control substrate 22 can be fixed to the back side of the chassis 102 via, for example, a spacer not shown in the figure.

[0112] In addition, the first layer portion 2A of the first position detection unit 1 is arranged on the upper side (front side) of the base frame 102, the folded portion 2B of the first position detection unit 1 is arranged on the side of the base frame 102, and the second layer portion 2C of the first position detection unit 1 is arranged on the back side of the base frame 102.

[0113] 1-1-3 Shielding section 103

[0114] Figure 2 and Figure 3 The shielding part 103 shown in B is a plate-shaped member arranged directly below the sensor coil 13. The shielding part 103 suppresses the mixing of unnecessary signals (electromagnetic noise) into the electrodes (sensor electrodes 3, sensor coil 13) of the first position detection part 1 and the second position detection part 11, and suppresses the leakage of the magnetic flux generated by the sensor coil 13 of the second position detection part 11. In addition, by suppressing the leakage of the magnetic flux, it is possible to avoid the characteristics of the sensor coil 13 from being changed by the member under the sensor coil 13. For example, the shielding part 103 can be composed of a member obtained by attaching an electromagnetic sheet for suppressing the leakage of the magnetic flux generated in the sensor coil 13 to a conductive sheet for suppressing electromagnetic noise. The conductive sheet can be composed of, for example, ITO (IndiumTinOxide), zinc oxide, tin oxide, etc., and the electromagnetic sheet can be composed of a magnetic material.

[0115] In the first embodiment, the entire line collection portion 4b of the wiring 4A is arranged inside the outer edge of the shield 103 in a plan view of the sensor panel 101. The line collection portion 4b of the wiring 4B is also arranged inside the outer edge of the shield 103.

[0116] 1-1-4 Front member 104 and outer profile 105

[0117] Figure 1 and Figure 2 The front member 104 shown is a flat member made of a transparent material such as glass or resin. A frame made of resin (not shown) is bonded to the periphery of the front member 104, and the frame and the outer shell 105 are engaged with claws, so that the front member 104 is fixed to the outer shell 105. For example, it is connected to the outer shell 105 using an adhesive. And, in a state where the front member 104 is connected to the outer shell 105, an internal space for accommodating the first position detection unit 1 and the second position detection unit 11, the display device 21, the unified control substrate 22, the shielding unit 103, etc. is formed between the front member 104 and the outer shell 105. The outer shell 105 is formed in a concave shape in a manner capable of accommodating the first position detection unit 1 and the second position detection unit 11, etc., and can be composed of, for example, resin, etc.

[0118] like Figure 3 As shown in FIG. 1B , when the input device 100 is viewed from above, the front member 104 can be divided into an effective area Rg1 , a peripheral area Rg2 , an outer area Rg3 , and a connection area Rg4 .

[0119] The effective region Rg1 is a rectangular region facing pixels (not shown) arranged in a matrix of the display device 21. Since the sensor electrodes 3 are arranged in the effective region Rg1, the position of the finger can be detected in the effective region Rg1.

[0120] The edge region Rg2 is an area outside the effective region Rg1 and inside the edge of the chassis 102. The sensor electrodes 3 are not arranged in the edge region Rg2, but the sensor coils 13 are arranged. Thus, it is easy to appropriately obtain the distribution (level curve) of the levels of the received signals at the plurality of sensor coils 13, and it is also possible to detect the tilt of the pen.

[0121] The outer region Rg3 is a region outside the edge of the chassis 102 and inside the connection region Rg4.

[0122] The connection region Rg4 is a region where the resin frame provided on the outer periphery of the front member 104 and the outer shell 105 are engaged with each other by means of claws.

[0123] 1-2 Functions and Effects of the First Embodiment

[0124] 1-2-1 About the degree of freedom of configuration

[0125] The internal space of the front member 104 and the outer shell 105 is limited. In particular, if the overall structure is thin as in the first embodiment, the internal space is narrow, which easily leads to restrictions on the arrangement positions of various structures such as wiring. The input device 100 of the first embodiment has a second layer 2C arranged in a manner overlapping with the first layer 2A when the sensor panel 101 is viewed from above, thereby increasing the degree of freedom of arrangement of the mounted structure (the degree of freedom of arrangement in the z direction). As a result, it is possible to suppress restrictions on the specifications of the input device 100. For example, in the input device 100, there is a portion where wiring is concentrated, such as the wiring collection portion 4b, but it is possible to achieve a specification in which such a portion is arranged in the second layer 2C as the lower layer rather than the first layer 2A as the upper layer (edge ​​area Rg2 and outer area Rg3).

[0126] 1-2-2 Noise Suppression

[0127] The line collection part 4b of the wiring 4B connected to the receiving electrode 3B is used for the flow of the received signal of the sensor. Therefore, if the electromagnetic noise overlaps the receiving electrode 3B, it will become a cause of the decrease in the accuracy of position detection. Here, the line collection part 4b of the wiring 4B extends in a manner having a component in the x direction orthogonal to the extending direction of the receiving electrode 3B, that is, the y direction. Therefore, if it is assumed that the line collection part 4b of the wiring 4B is arranged in the first layer 2A (edge ​​area Rg2 and outer area Rg3), the line collection part 4b of the wiring 4B is arranged in a manner close to the x-direction coil 13A in parallel. In this way, the line collection part 4b of the wiring 4B will be affected by the magnetic field caused by the current flowing in the x-direction coil 13A, and the electromagnetic noise is easily overlapped.

[0128] However, in the first embodiment, the entirety of the line collection portion 4b of the wiring 4B is arranged at a position inside the outer edge of the shield portion 103 when the sensor panel 101 is viewed from above. Also, the x-direction coil 13A is arranged on the upper side and the line collection portion 4b of the wiring 4B is arranged on the lower side with the shield portion 103 as a boundary. Therefore, the magnetic field generated by the current flowing through the x-direction coil 13A is shielded by the shield portion 103, and it is possible to suppress the electromagnetic noise from being superimposed on the received signal.

[0129] The same structure is also used for the wiring 4A connected to the transmitting electrode 3A. Therefore, the current (signal) flowing in the wiring 4A connected to the transmitting electrode 3A of the first position detecting unit 1 can be prevented from causing noise to the sensor coil 13 .

[0130] 1-3 Modification of the First Embodiment

[0131] 1-3-1 Modification 1: Dividing the flexible substrate fb into multiple

[0132] In the first embodiment, the flexible substrate fb constituting the folded portion 2B1 and the connecting portion 2C1 is composed of one sheet, but the present invention is not limited thereto and the flexible substrate fb may be divided into a plurality of sheets. Fig. 9 As shown in FIG. 1 , the flexible substrate fb may also be composed of a plurality of separated parts fb1. As a result, in the modification 1, the base 2 has a plurality of independent folded parts 2B1 and connecting parts 2C1 (four of each in this modification). In other words, when the sensor panel 101 is viewed from above, the folded parts 2B1 of the separated parts fb1 are separated (divided) from each other, and the connecting parts 2C1 of the separated parts fb1 are also separated (divided) from each other.

[0133] The flexible substrate fb constituting the folded portion 2B2 and the connecting portion 2C2 may be separated (divided) into a plurality of pieces in the same manner as described above.

[0134] As described above, by separating (dividing) the flexible substrate fb into a plurality of pieces, positional deviation is less likely to occur when the flexible substrate fb is connected to the film-shaped member fm on which the sensor electrodes 3 are arranged and the control substrate 2C3.

[0135] 1-3-2 Modification 2: One of the objects for configuring the line concentrator 4b

[0136] In the first embodiment, the line collection part 4b is arranged on the control substrate 2C3, but it is not limited to this, and the line collection part 4b can also be arranged on the flexible substrate fb. Fig.10 As shown, the flexible substrate fb has a plurality of separated parts fb1 and a connection part fb2 formed by connecting the separated parts fb1 as in Modification 1. In Modification 2, a line collection part 4b is arranged in the connection part fb2. Even in Modification 2, the same operation and effect as in the first embodiment can be obtained.

[0137] 1-3-3 Modification 3: Second object for configuring the line concentrator 4b

[0138] In the first embodiment, the film-shaped member fm on which the sensor electrode 3 is arranged is not bent, and the bent portion is the flexible substrate fb, but the present invention is not limited thereto. The film-shaped member fm on which the sensor electrode 3 is arranged is inferior in bending property to the flexible substrate fb, but has moderate elasticity and can be bent. Therefore, the film-shaped member fm on which the sensor electrode 3 is arranged may constitute the folded portions 2B1, 2B2 and the connecting portions 2C1, 2C2. That is, in this modification example 3, the first layer portion 2A, the folded portion 2B, and the connecting portions 2C1, 2C2 are constituted by the same member (an integral film-shaped member fm made of the same material).

[0139] In this modification 3, the line collection portion 4b may be as follows Fig.11 As shown in A, the wire collection portion 4b may be arranged at the second layer portion 2C in the film-like member fm. Fig.11 As shown in B, it is arranged at the folded portion 2B of the film-like member fm.

[0140] In addition, the film-shaped member fm configuring the sensor electrodes 3 is less likely to bend than the flexible substrate fb, so it is preferable not to directly connect the film-shaped member fm and the control substrate 2C3. In other words, it is preferable to place the flexible substrate fb between the film-shaped member fm configuring the sensor electrodes 3 and the control substrate 2C3 with a margin.

[0141] 1-3-4 Modification 4: Not having display device 21

[0142] In the first embodiment, the input device 100 is described as including the display device 21, but the present invention is not limited thereto. Fig.12A and Fig.12 As shown in B, the input device 100 may not include the display device 21. The fourth modification will be described mainly with respect to the parts that are different in structure from the first embodiment, and description of the same parts will be appropriately omitted.

[0143] The front member 104 of the input device 100 can be made of, for example, resin, etc., and may not be transparent. The input device 100 replaces the chassis 102 and has a plate-like portion 102t arranged between the first layer portion 2A and the coil substrate 12A. The plate-like portion 102t can be made of, for example, resin. The first layer portion 2A is arranged on the upper side of the plate-like portion 102t, the folding portion 2B is arranged on the side of the plate-like portion 102t, and the control substrate 2C3, the coil substrate 12A and the control substrate 12C are arranged on the lower side of the plate-like portion 102t. In addition, the shielding portion 103 is arranged on the lower side of the coil substrate 12A. Even in this modification example 4, the same action and effect (configuration freedom) as the first embodiment can be obtained.

[0144] In addition, although it is related to Fig.12 A and Fig.12 B, the entirety of the wiring 4A and wiring 4B may be arranged below the shield 103 and inside the outer edge of the shield 103 in a plan view of the sensor panel 101. This also achieves the effect of suppressing noise of the first embodiment.

[0145] 1-3-5 Modification 5: Other structures of the cable collection portion 4b

[0146] The wiring 4 in the first embodiment extends in a manner that has a component in a direction orthogonal to a direction parallel to the extending direction of the electrodes (transmitting electrode 3A and receiving electrode 3B) at the wiring collection portion 4b. Here, in the first embodiment, the plurality of wirings 4 are collected by bending the direction at a right angle in the xy plane at the wiring collection portion 4b, but the present invention is not limited thereto. Fig.13 As shown, the plurality of wirings 4 may be gathered at the gathering portion 4b so as to extend in an oblique direction in the xy plane.

[0147] 1-3-7 Modification 6: Disposing a flexible substrate fb between film-like members fm

[0148] In the first embodiment, the film-like member fm is disposed only on the first layer 2A, but the film-like member fm may be disposed on both the first layer 2A and the second layer 2C and the first layer 2A and the second layer 2C may be connected by a flexible substrate fb. Fig.14As shown, the connecting parts 2C1 and 2C2 constituting a part of the second layer part 2C are constituted by the film-like member fm as in the first layer part 2A. The flexible substrate fb is more flexible than the film-like member fm, so the flexible substrate fb constitutes the folding part 2B, and the film-like member fm constitutes the first layer part 2A and the second layer part 2C.

[0149] 2 Second Embodiment

[0150] 2-1 Description of the structure of the second embodiment

[0151] The second embodiment has a basic structure common to the first embodiment, so the description will be centered around different structures, and description of common structures may be omitted. The second embodiment includes a structure for suppressing electromagnetic noise superimposed on the sensor electrode 3 .

[0152] It should be noted that in the following description, the corresponding relationship between the various structures is as follows.

[0153] The receiving electrode 3B is an example of a first sensor electrode, and the transmitting electrode 3A is an example of a second sensor electrode.

[0154] In addition, the extending direction (y direction) of the reception electrode 3B is an example of the first direction, and the extending direction (x direction) of the transmission electrode 3A is an example of the second direction.

[0155] In addition, the wiring 4B connected to the reception electrode 3B is an example of the first wiring, and the wiring 4A connected to the transmission electrode 3A is an example of the second wiring.

[0156] The line collecting portion 4b of the wiring 4B is an example of a first line collecting portion, and the line collecting portion 4b of the wiring 4A is an example of a second line collecting portion.

[0157] In addition, the y-direction coil 13B is an example of a first sensor coil, and the x-direction coil 13A is an example of a second sensor coil.

[0158] Furthermore, the outer sensor coil 13a (see Fig.15 A) is an example of the first outer sensor coil. The outer sensor coil 13a (see Fig.15 B) is an example of the second outer sensor coil.

[0159] As in the first embodiment, the sensor electrode 3 includes a transmitting electrode 3A and a receiving electrode 3B. The transmitting electrode 3A is connected to a wiring 4A having a wiring concentrator 4b. The receiving electrode 3B is connected to a wiring 4B having a wiring concentrator 4b.

[0160] As in the first embodiment, the sensor coil 13 has Fig.15 The x-direction coil 13A shown in A and Fig.15 B shows the y-direction coil 13B.

[0161] The plurality of x-direction coils 13A extending in the x-direction are arranged in a plurality in the y-direction. Fig.16 In the example, the y-direction coil 13B is wound into a ring shape. It should be noted that the same is true for each y-direction coil 13B. Fig.15 As shown in FIG. 4A , the plurality of x-direction coils 13A include an outer sensor coil 13a disposed closest to the line collection portion 4b in the y-direction.

[0162] like Fig.15 As shown in A, the outer sensor coil 13a in the x-direction coil 13A has an outer coil portion 13b and an inner coil portion 13c extending parallel to the x-direction. Fig.16 In the paper of FIG. 1 , the current flows from the near front side to the inner side for the outer coil portion 13b, and from the inner side to the near front side for the inner coil portion 13c. That is, the current flows in opposite directions in the outer coil portion 13b and the inner coil portion 13c.

[0163] In the second embodiment, a gap corresponding to the linear distance D is provided between the outer sensor coil 13a in the x-direction coil 13A and the line collection portion 4b of the wiring 4B connected to the receiving electrode 3B. Here, the linear distance D is 28 mm or more.

[0164] It should be noted that the straight-line distance D can be defined as the distance between the wiring d1 in the outer coil portion 13b that is closest to the wire collection portion 4b in the y direction and the wiring d2 in the wire collection portion 4b that is closest to the outer coil portion 13b in the y direction. The distance between the wiring d1 and the wiring d2 can be specified in multiple ways depending on the positions of the wiring d1 and d2, but the straight-line distance D is set to be the smallest distance between the wiring d1 and the wiring d2.

[0165] 2-2 Functions and Effects of the Second Embodiment

[0166] Fig. 20 The figure shows the level of electromagnetic noise applied to the measurement wiring (measurement copper tape) when a current is flowing in the y-direction coil 13B and a measurement wiring (measurement copper tape) extending parallel to the y-direction imitating the line collection portion 4b is arranged close to the y-direction coil 13B and the position of the measurement wiring is scanned in the x-direction. Fig. 20In the embodiment, the position of the measurement wiring is arranged at a height position substantially equal to that of the sensor electrode 3 (receiving electrode 3B). Furthermore, the position of the measurement wiring is scanned in the x direction to change the distance between the measurement wiring and the y-direction coil 13B.

[0167] Fig. 20 The arrow P0 corresponds to the level of electromagnetic noise when the position of the measurement wiring is located at the center between the inner coil portion 13c and the outer coil portion 13b.

[0168] Fig. 20 Arrow P1 corresponds to the level of electromagnetic noise when the position of the measurement wiring is located at the center of the width of the outer coil part 13b in the x direction.

[0169] Fig. 20 The arrow P2 corresponds to the level of electromagnetic noise when the position of the measurement wiring is located at the center of the width of the inner coil portion 13c in the x direction.

[0170] like Fig. 20 As shown in FIG. 1 , it can be seen that if the linear distance between the position of the measurement wiring and the y-direction coil 13B is 28 mm or more, electromagnetic noise can be suppressed. Fig. 20 The measurement result can also be applied to the relationship between the x-direction coil 13A and the line collection portion 4b of the wiring 4B of the reception electrode 3B parallel thereto. Fig. 20 According to the measurement result, the straight line distance D between the outer sensor coil 13a in the x-direction coil 13A and the line collection portion 4b of the receiving electrode 3B is set to be 28 mm or more. In the second embodiment, by adopting such a structure, it is possible to suppress the superposition of electromagnetic noise on the received signal.

[0171] It should be noted that, in the second embodiment, the structure for suppressing the electromagnetic noise of the wiring 4B connected to the receiving electrode 3B is described, but the invention is not limited thereto. That is, the straight-line distance between the outer sensor coil in the y-direction coil 13B and the line collection part 4b of the wiring 4A may be 28 mm or more. Thus, it is possible to suppress the current (signal) flowing in the line collection part 4b of the wiring 4A connected to the transmitting electrode 3A of the first position detection unit 1 from causing noise to the sensor coil 13.

[0172] As described in the fourth modification of the first embodiment, in the second embodiment, the input device 100 may not include the display device 21. Even in such a configuration, the same functions and effects as those of the second embodiment described above can be obtained.

[0173] In the second embodiment, the following configuration (1) is assumed to be satisfied. However, configuration (1) may be replaced with configuration (2), or both configuration (1) and configuration (2) may be satisfied.

[0174] Configuration (1): The linear distance between the outer sensor coil in the x-direction coil 13A and the line collection portion 4b of the wiring 4B connected to the receiving electrode 3B is 28 mm or more.

[0175] Configuration (2): The linear distance between the outer sensor coil in the y-direction coil 13B and the line collection portion 4b of the wiring 4A connected to the transmitting electrode 3A is 28 mm or more.

[0176] 3. Third Implementation

[0177] 3-1 Structure Description of the Third Embodiment

[0178] The configuration of the third embodiment is basically the same as that of the first embodiment, so the description will be centered around different configurations, and description of common configurations may be omitted. The third embodiment also has a configuration for suppressing electromagnetic noise superimposed on the sensor electrode 3 similarly to the second embodiment.

[0179] In the third embodiment, the chassis 102 is made of metal and is formed of a member that can easily shield electromagnetic noise. The chassis 102 can be formed of, for example, SUS (Steel Special Use Stainless Steel) or aluminum. Fig.17 As shown, the chassis 102 has a bottom 102a and a wall 102b rising from the bottom 102a. The shield 103 is arranged on the bottom 102a. The display device 21, the coil substrate 12A, and the shield 103 are arranged inside the wall 102b. In addition, the first layer 2A is arranged on the wall 102b.

[0180] like Fig.17 As shown in FIG. 1 , the coil substrate 12A (sensor coil 13) is arranged on the inner side of the chassis 102. In addition, the line collection portion 4b of the wiring 4B connected to the receiving electrode 3B is arranged on the outer side of the chassis 102 when the sensor panel 101 is viewed from above. In other words, the line collection portion 4b of the wiring 4B is arranged on the outer side of the wall portion 102b of the chassis 102.

[0181] 3-2 Functions and Effects of the Third Embodiment

[0182] Third Embodiment By adopting the above-mentioned configuration, it is possible to suppress superposition of electromagnetic noise on a reception signal.

[0183] It should be noted that, in the second embodiment, the structure for suppressing the electromagnetic noise of the wiring 4B connected to the receiving electrode 3B is described, but the present invention is not limited thereto. That is, the line collection part 4b of the wiring 4A connected to the transmitting electrode 3A may be arranged outside the chassis 102 when the sensor panel 101 is viewed from above. Thus, the current (signal) flowing in the line collection part 4b of the wiring 4A connected to the transmitting electrode 3A of the first position detection unit 1 can be suppressed from causing noise to the sensor coil 13.

[0184] In the third embodiment, the following configuration (1) is assumed to be satisfied. However, configuration (1) may be replaced with configuration (2), or both configuration (1) and configuration (2) may be satisfied.

[0185] Configuration (1): The line collection portion 4 b of the wiring 4B connected to the receiving electrode 3B is arranged outside the chassis 102 in a plan view of the sensor panel 101 .

[0186] Configuration (2): The line collection portion 4 b of the wiring 4A connected to the transmitting electrode 3A is arranged outside the chassis 102 in a plan view of the sensor panel 101 .

[0187] 4. Fourth Embodiment

[0188] 4-1 Description of the structure of the fourth embodiment

[0189] The fourth embodiment has the same basic structure as the first embodiment, so the description will focus on the different structures and the description of the common structures may be omitted. The third embodiment also has a structure for suppressing electromagnetic noise superimposed on the sensor electrode 3 similarly to the second embodiment.

[0190] like Fig. 20 As shown, arrow P0 corresponds to the electromagnetic noise when the position of the measurement wiring is located at the center between the inner coil part 13c and the outer coil part 13b. Here, at the arrow P0, the electromagnetic noise is suppressed to a low level. This is because the difference in magnetic field at the left and right wiring (inner coil part 13c and outer coil part 13b) generates an electromotive force, but the difference in magnetic field is small above the center of the coil, so the electromotive force becomes small.

[0191] Therefore, in the fourth embodiment, if Fig.18As shown in FIG. 1 , the position of the line collection portion 4b of the wiring 4B of the receiving electrode 3B is set to the center position O between the outer coil portion 13b and the inner coil portion 13c in the y direction. More specifically, the center position 4b0 of the line collection portion 4b in the y direction is made consistent with the center position O. It should be noted that the center position 4b0 and the center position O may not be completely consistent. In other words, it is preferred that at least a portion of the line collection portion 4b is arranged to overlap with the center position O when the sensor panel 101 is viewed from above.

[0192] In addition, it is preferable that the entire line collection portion 4b is within a predetermined range Ar. The predetermined range Ar is, for example, a range between a position 5 mm away from the center position O in the +y direction and a position 5 mm away from the center position O in the -y direction. By having the line collection portion 4b within the predetermined range Ar, the electromagnetic noise is controlled to a level substantially equivalent to that of the electromagnetic noise in the second embodiment.

[0193] 4-2 Functions and Effects of the Fourth Embodiment

[0194] The fourth embodiment adopts the above-mentioned structure to suppress the superposition of electromagnetic noise on the received signal. It should be noted that the fourth embodiment can also be applied to the wiring 4A connected to the transmitting electrode 3A. In addition, if the fourth embodiment is combined with the above-mentioned second embodiment, a complementary effect can be expected. In other words, it is also possible to satisfy the structure of the fourth embodiment while making the straight-line distance D greater than 28 mm as described in the second embodiment.

[0195] 5 Fifth Embodiment

[0196] 5-1 Description of the structure of the fifth embodiment

[0197] The fifth embodiment has a structure that is basically the same as the first embodiment, so the description will be centered around the different structures, and the description of the common structures may be omitted. In the fifth embodiment, although the noise itself overlaps the line gathering portion 4b, it has a function of suppressing a decrease in position detection accuracy.

[0198] exist Fig. 20In the figure, arrow P1 corresponds to the level of electromagnetic noise when the position of the measurement wiring is located at the center of the width in the x direction in the outer coil part 13b, and arrow P2 corresponds to the level of electromagnetic noise when the position of the measurement wiring is located at the center of the width in the x direction in the inner coil part 13c. At these positions, the level of electromagnetic noise is quite high, but on the other hand, compared with the position of arrow P0, the deviation of the level of electromagnetic noise relative to the change of the distance in the x direction is smaller. That is, at the positions of arrows P1 and arrows P2, the value of electromagnetic noise overlapping with the wiring is higher than the value of electromagnetic noise at the position of arrow P0, but at the positions of arrows P1 and arrows P2, the value of electromagnetic noise overlapping with the wiring is easy to be within the specified range.

[0199] It should be noted that Fig. 20 The measurement results can also be applied to the relationship between the x-direction coil 13A and the line collection portion 4 b of the wiring 4B of the reception electrode 3B parallel thereto.

[0200] Therefore, in the fifth embodiment, the line collection portion 4b is arranged so as to overlap with one of the outer coil portion 13b and the inner coil portion 13c of the x-direction coil 13A when the sensor panel is viewed from above. Fig.19 As shown, the line collection part 4b is arranged in a manner overlapping with the outer coil part 13b. Furthermore, in the fifth embodiment, the control unit 2C4 is configured to calculate the position of the finger based on the difference of the signal flowing in the wiring 4B forming the line collection part 4b. Specifically, the control unit 2C4 has a differential circuit that calculates the difference of the signal flowing in the wiring 4B. The control unit 2C4 can remove the signal caused by the electromagnetic noise overlapping with the wiring 4B by, for example, calculating the difference of the signal flowing in the adjacent wiring 4B.

[0201] It should be noted that the line gathering portion 4b may be arranged so as to overlap with the inner coil portion 13c, or the line gathering portion 4b may be arranged so as to overlap with both the outer coil portion 13b and the inner coil portion 13c.

[0202] 5-2 Functions and Effects of the Fifth Embodiment

[0203] In the fifth embodiment, the line concentrator 4b satisfies the above-mentioned positional relationship with respect to the sensor coil 13, and the control unit 2C4 includes a differential circuit, so that the position detection accuracy can be suppressed from decreasing. It should be noted that the fifth embodiment can also be applied to the line concentrator 4b of the wiring 4A connected to the transmitting electrode 3A.

[0204] Description of Reference Numerals

[0205] 1: First position detection unit, 2: Base, 2A: First layer, 2A1: Edge, 2A2: Edge, 2B: Folding, 2B1: Folding, 2B2: Folding, 2C: Second layer, 2C1: Connecting, 2C2: Connecting, 2C3: Control substrate, 2C4: Control unit, 2C5: Cutout, 3: Sensor electrode, 3A: Transmitting electrode, 3B: Receiving electrode, 4: Wiring, 4A: First wiring, 4B: Second wiring, 4a: Non-wire collection part, 4b: Wire collection part, 11: Second position detection unit, 12: Substrate, 12A: Coil substrate, 12B: Flexible substrate, 12C: Control substrate, 12D: Control unit, 13: Sensor coil, 13A: X-axis y direction coil, 13B: y direction coil, 13a: outer sensor coil, 13b: outer coil part, 13c: inner coil part, 14: wiring, 21: display device, 22: overall control substrate, 22A: overall control part, 100: input device, 101: sensor panel, 102: chassis, 102a: bottom, 102b: wall part, 102t: plate-like part, 103: shielding part, 104: front member, 105: outer contour, Rg1: effective area, Rg2: edge area, Rg3: outer area, Rg4: connecting area, d1: wiring, d2: wiring, fb: flexible substrate, fb1: separation part, fb2: connection part, fm: membrane-like member.

Claims

1. An input device comprising a sensor panel, wherein: The sensor panel has a first position detection portion, The first position detection unit includes a base, a plurality of sensor electrodes, and a plurality of wirings. The base portion comprises a first layer portion, a folded portion and a second layer portion, The folded portion is connected to the first layer portion and the second layer portion, The first layer portion and the second layer portion are arranged to overlap each other when the sensor panel is viewed from above. Each of the sensor electrodes is disposed on the first layer portion, Each of the wirings is connected to each of the sensor electrodes, and each of the wirings is provided so as to extend from the folded portion to the second layer portion.

2. The input device according to claim 1, wherein: The plurality of wirings have a wiring hub portion, In the line collection portion, the wiring extends so as to have a component in a direction orthogonal to a direction parallel to an extending direction of the sensor electrode. The cable collection portion is provided at the second layer portion or the folded portion.

3. The input device according to claim 2, wherein: The second layer portion has a control substrate, The control substrate is provided with the line collection part and the control unit. The line concentrator is connected to the control unit.

4. The input device according to claim 2, wherein: The second layer portion has a connection portion and a control substrate, The connecting portion is a flexible substrate, and the line collection portion is arranged on the connecting portion. A control unit is provided on the control substrate. The line collection portion extending from the connecting portion is connected to the control portion.

5. The input device according to any one of claims 1 to 4, wherein: The first layer portion and the folded portion are composed of independent components. The folding portion is formed by a flexible substrate.

6. The input device according to claim 5, wherein: The base portion has a plurality of independent folded portions, and each of the folded portions is crimped and connected to the first layer portion and the second layer portion.

7. The input device according to claim 2, wherein: The second layer portion has a connection portion and a control substrate, The first layer portion, the folded portion and the connecting portion are composed of the same components. The line collection portion is arranged at the folding portion or the connecting portion.

8. The input device according to any one of claims 1 to 4 and 7, wherein: The sensor electrodes include a plurality of first sensor electrodes and a plurality of second sensor electrodes, and the plurality of wirings include a plurality of first wirings and a plurality of second wirings, Each of the first sensor electrodes is provided on one side of the surface of the first layer portion, and each of the second sensor electrodes is provided on the other side of the surface of the first layer portion, The first layer portion has an edge portion, The edge portion includes both the folded portion and the second layer portion. The first wiring or the second wiring extends in the folded portion and the second layer portion.

9. The input device according to claim 8, wherein: The first layer portion has a first edge portion and a second edge portion as the edge portions, The first wiring extends in the folded portion and the second layer portion corresponding to the first edge portion, and the second wiring extends in the folded portion and the second layer portion corresponding to the second edge portion, In a plan view of the sensor panel, the second layer portion corresponding to the first edge portion and the second layer portion corresponding to the second edge portion do not overlap.

10. The input device according to any one of claims 1 to 4 and 7, wherein: The input device further includes a shielding portion. The sensor panel further comprises a second position detection unit. The first position detection unit is configured to detect a position by electrostatic coupling. The second position detection unit is configured to detect a position by electromagnetic induction and includes a plurality of sensor coils. The first layer portion, the sensor coil of the second position detection portion, the shield portion, and the second layer portion are arranged so as to be stacked in sequence.

11. An input device comprising a sensor panel, wherein: The sensor panel has a first position detection unit and a second position detection unit. The first position detection unit is configured to detect a position by electrostatic coupling, and includes a base, a plurality of first sensor electrodes and a plurality of second sensor electrodes, and a plurality of first wirings and a plurality of second wirings. Each of the first sensor electrodes is a receiving electrode provided so as to extend in a first direction, and each of the second sensor electrodes is a transmitting electrode provided so as to extend in a second direction intersecting the first direction, Each of the first sensor electrodes and each of the first wirings are provided on one surface of the base, and each of the second sensor electrodes and each of the second wirings are provided on the other surface of the base, Each of the first wirings is connected to each of the first sensor electrodes, and each of the second wirings is connected to each of the second sensor electrodes, The plurality of first wirings have a first collection portion, and the plurality of second wirings have a second collection portion, In the first line collection portion, the first wiring extends so as to have a component in a direction orthogonal to a direction parallel to the first direction. In the second line collection portion, the second wiring extends so as to have a component in a direction orthogonal to a direction parallel to the second direction. The second position detection unit is configured to detect a position by electromagnetic induction, and includes a plurality of first sensor coils and a plurality of second sensor coils. Each of the first sensor coils is arranged to extend in the first direction, and each of the second sensor coils is arranged to extend in the second direction. The plurality of first sensor coils have a first outer sensor coil disposed closest to the second cluster portion in the second direction, The plurality of second sensor coils have a second outer sensor coil disposed closest to the first cluster portion in the first direction, Satisfies at least one of the following (1) and (2), (1) A space of 28 mm or more is provided between the first wire collecting portion and the second outer sensor coil. (2) A space of 28 mm or more is provided between the second wire collecting portion and the first outer sensor coil.

12. The input device according to claim 11, wherein: When a gap of 28 mm or more is left between the first wire collecting portion and the second outer sensor coil, The second outer sensor coil includes an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and allowing current to flow in a direction opposite to the inner coil portion. When the sensor panel is viewed in plan, at least a portion of the first wire collecting portion is arranged to overlap with a center position between the inner coil portion and the outer coil portion.

13. An input device comprising a sensor panel and a metal chassis, wherein: The sensor panel has a first position detection unit and a second position detection unit. The first position detection unit is configured to detect a position by electrostatic coupling, and includes a base, a plurality of first sensor electrodes and a plurality of second sensor electrodes, and a plurality of first wirings and a plurality of second wirings. Each of the first sensor electrodes is a receiving electrode provided so as to extend in a first direction, and each of the second sensor electrodes is a transmitting electrode provided so as to extend in a second direction intersecting the first direction, Each of the first sensor electrodes and each of the first wirings are provided on one surface of the base, and each of the second sensor electrodes and each of the second wirings are provided on the other surface of the base, Each of the first wirings is connected to each of the first sensor electrodes, and each of the second wirings is connected to each of the second sensor electrodes, The plurality of first wirings have a first collection portion, and the plurality of second wirings have a second collection portion, In the first line collection portion, the first wiring extends so as to have a component in a direction orthogonal to a direction parallel to the first direction. In the second line collection portion, the second wiring extends so as to have a component in a direction orthogonal to a direction parallel to the second direction. The second position detection unit is configured to detect a position by electromagnetic induction, and includes a plurality of first sensor coils and a plurality of second sensor coils. Each of the first sensor coils is arranged to extend in the first direction, and each of the second sensor coils is arranged to extend in the second direction. Each of the first sensor coils and each of the second sensor coils are arranged on the inner side of the base frame, At least one of the first cable collecting portion and the second cable collecting portion is arranged outside the chassis in a plan view of the sensor panel.

14. An input device comprising a sensor panel, wherein: The sensor panel has a first position detection unit and a second position detection unit. The first position detection unit is configured to detect a position by electrostatic coupling, and includes a base, a plurality of first sensor electrodes and a second sensor electrode, and a plurality of wirings. Each of the first sensor electrodes is a receiving electrode provided so as to extend in a first direction, and each of the second sensor electrodes is a transmitting electrode provided so as to extend in a second direction intersecting the first direction, Each of the first sensor electrodes and each of the wirings is provided on one surface of the base, and each of the second sensor electrodes is provided on the other surface of the base. Each of the wirings is connected to each of the first sensor electrodes, The plurality of wirings have a wiring hub portion, In the line collection portion, the wiring extends so as to have a component in a direction orthogonal to a direction parallel to the first direction. The second position detection unit is configured to detect a position by electromagnetic induction, and includes a plurality of first sensor coils and a plurality of second sensor coils. Each of the first sensor coils is arranged to extend in the first direction, and each of the second sensor coils is arranged to extend in the second direction. The plurality of second sensor coils have an outer sensor coil disposed closest to the hub portion in the first direction, The outer sensor coil includes an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and allowing current to flow in a direction opposite to the inner coil portion. When the sensor panel is viewed in plan, at least a portion of the line collecting portion is arranged to overlap with a center position between the inner coil portion and the outer coil portion.

15. The input device according to claim 14, wherein: When the sensor panel is viewed from above, the entirety of the wire collecting portion is arranged between the inner coil portion and the outer coil portion.

16. An input device comprising a sensor panel and a control substrate provided with a control unit, wherein: The sensor panel has a first position detection unit and a second position detection unit. The first position detection unit is configured to detect a position by electrostatic coupling, and includes a base, a plurality of first sensor electrodes and a second sensor electrode, and a plurality of wirings. Each of the first sensor electrodes is a receiving electrode provided so as to extend in the first direction, and each of the second sensor electrodes is a transmitting electrode provided so as to extend in a second direction intersecting the first direction. Each of the first sensor electrodes and each of the wirings is provided on one surface of the base, and each of the second sensor electrodes is provided on the other surface of the base. Each of the wirings is connected to each of the first sensor electrodes, The plurality of wirings have a wiring hub portion, In the line collection portion, the wiring extends so as to have a component in a direction orthogonal to a direction parallel to the first direction. The control unit is configured to calculate the position based on a difference in signals flowing through the wiring forming the line collection portion, The second position detection unit is configured to detect a position by electromagnetic induction, and includes a plurality of first sensor coils and a plurality of second sensor coils. Each of the first sensor coils is arranged to extend in the first direction, and each of the second sensor coils is arranged to extend in the second direction. The plurality of second sensor coils have an outer sensor coil disposed closest to the hub portion in the first direction, The outer sensor coil includes an inner coil portion extending in the second direction and an outer coil portion extending in the second direction and allowing current to flow in a direction opposite to the inner coil portion. The line collecting portion is arranged to overlap with one of the inner coil portion and the outer coil portion when the sensor panel is viewed in plan.

17. The input device according to claim 16, wherein: The line collecting portion is arranged to overlap only one of the inner coil portion and the outer coil portion when the sensor panel is viewed in plan.

Images