Sensor and position detection device

Abstract

While maintaining the performance as a position detection device, a stacked structure is made thin and the designability is improved. The system comprises a surface-embedded mutual capacitance mode touch sensor TS1; and an RX electrode layer (TX sensor coil group (200)) provided with a plurality of RX electrodes for detecting a pen alternating magnetic field generated by a pen in which energy is accumulated by the alternating magnetic field from the TX electrode layer (TX sensor coil group (100)), the TX electrode layer being provided with TX electrodes for generating an alternating magnetic field for detecting the position of the pen using electromagnetic induction. An RX electrode layer (RX sensor coil group 200) is surrounded by a touch electrode formed of a mesh electrode pattern provided on a surface touch layer of a surface-mounted mutual capacitance touch sensor TS1, and RX electrode wiring is formed in a linear shape by coupling floating patterns adjacent to each other in the direction in which the RX electrode extends to each other by jumper wiring.

Description

Technical Field

[0001] The present invention relates to a sensor and a position detection device. Background Art

[0002] In recent years, for example, a position input device using an electromagnetic induction method has been used as an input device for a flat PC (personal computer) or the like.

[0003] The position input device includes a pen-shaped position indicator (pen-type position indicator) and a position detection device, and the position detection device has an input surface for performing an indication operation and input of characters, drawings, etc. using the pen-type position indicator.

[0004] The position indicator includes a resonance circuit composed of a coil and a capacitor.

[0005] On the other hand, as shown in FIG. 18, the position detection device is configured to include, in order to obtain the X-axis direction coordinates of the position indicator in the active region AA:

[0006] An X sensor coil group including X sensor coils X0,..., X4 arranged in the X direction;

[0007] A switch connected to the X sensor coil group; and

[0008] An X-axis TX / RX circuit,

[0009] · During the transmission period, the X-axis TX / RX circuit generates an alternating magnetic field (transmission magnetic field, the same hereinafter) by passing a current through each X sensor coil group arranged along the X axis.

[0010] · During the detection period after the transmission period, the X-axis TX / RX circuit detects, by current or voltage, the electromotive force generated in each X sensor coil group by detecting the pen signal (alternating magnetic field generated by the circuit of the position indicator, the same hereinafter) that continues to be generated by the position indicator that has accumulated energy in the resonance circuit during the transmission period.

[0011] Similarly, the position detection device is configured to include, in order to obtain the Y-axis direction coordinates of the position indicator:

[0012] A Y sensor coil group including Y sensor coils Y0,..., Y4 arranged along the Y direction;

[0013] A switch connected to the Y sensor coil group; and

[0014] A Y-axis TX / RX circuit,

[0015] · During the transmission period, the Y-axis TX / RX circuit generates a transmission magnetic field by passing a current through each X sensor coil group arranged along the Y axis.

[0016] · During the detection period after the transmission period of the Y-axis TX / RX circuit, the electromotive force generated in each Y-sensor coil group is detected by current or voltage through the pen signal that continues to be generated even after being held by the position indicator that has stored energy in the resonant circuit during the transmission period.

[0017] The position detection device, for example, sequentially selects one sensor coil from a plurality of sensor coils constituting the position detection sensor, sends a transmission signal to the position indicator from the selected sensor coil, and charges the capacitor in the position indicator.

[0018] On the other hand, the position detection device connects the sensor coil for transmission to the receiving circuit and receives the signal transmitted from the resonant circuit of the position indicator.

[0019] The position detection device sequentially switches the sensor coils and performs such signal transmission and reception, thereby detecting the position of the position indicator on the position detection device.

[0020] To describe in detail the position detection of the position indicator in the position detection device, first, (1) in order to detect which vicinity of the position detection sensor the position indicator is located in, a global scan is performed by sequentially switching all the sensor coils to detect the indication position of the position indicator, and the approximate position on the position detection sensor is determined. (2) A sector scan is performed by sequentially selecting a specified number of sensor coils only in the vicinity of the determined approximate position to perform signal transmission and reception, and the indication position of the position indicator is accurately determined.

[0021] Here, in the example of FIG. 18, the coordinates of the position indicator in the Y-axis direction are as shown by RXdata (upper part) in the figure. Based on the distribution of the level values in one-axis direction such as the level value 34 obtained by the Y-sensor coil Y0, the level value 118 obtained by the Y-sensor coil Y1,..., the level value 107 obtained by the Y-sensor coil Y4, the coordinates in the Y direction are derived by interpolation calculation or the like.

[0022] Similarly, the coordinates of the position indicator in the X-axis direction are as shown by RXdata (lower part) in the figure. Based on the distribution of the level values in one-axis direction such as the level value 25 obtained by the X-sensor coil X0, the level value 100 obtained by this X1,..., the level value 99 obtained by this X4, the coordinates in the X direction are derived by interpolation calculation or the like.

[0023] In this way, in the position detection device of FIG. 18, on the basis of obtaining the two-dimensional coordinates of the position indicator, the levels of the two axes are respectively obtained, the coordinates are obtained for each one-dimensional axis of the X-axis and the Y-axis according to their respective distributions (RXdata), and after a certain processing of the combination of these two, they are output as two-dimensional coordinates.

[0024] In addition, as Figure 19 shown, when the above-described position detection device, a touch sensor for detecting a finger or the like by means of electrostatic capacitance (self-capacitance or mutual-capacitance), and a display device are combined (or assembled), the stacked structure is as follows: A display 300 (configured to include a display front panel layer 301 and a TFT rear panel layer 302) is provided, and an EMR sensor composed of a TX sensor coil group 100 and an RX sensor coil group 200 is provided via an adhesive layer (Glue) below the display 300.

[0025] And, a touch sensor is provided above the display 300, and a cover glass for a pen to contact (including a cover film as well, the same hereinafter) is provided above the touch sensor (for example, refer to Patent Document 1).

[0026] [Prior Art Documents]

[0027] [Patent Documents]

[0028] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-157107. Summary of the Invention

[0029] [Problems to be Solved by the Invention]

[0030] However, in the conventional position detection device described in the above Patent Document 1, the touch sensor, the display 300, and the EMR sensor (including the TX sensor coil group 100 and the RX sensor coil group 200) are respectively composed of different substrates (different layers). Therefore, there is a problem that the thickness of the stacked structure formed by joining them through an adhesive layer becomes thick, and the designability is impaired.

[0031] Therefore, the present invention has been completed in view of the above problems, and an object thereof is to provide a sensor that maintains the performance as a position detection device, thins the stacked structure, and improves the designability, and a position detection device including the sensor.

[0032] [Means for Solving the Problems]

[0033] Mode 1: One or more embodiments of the present invention propose a sensor, comprising: a surface-embedded mutual capacitance type touch sensor; and an RX electrode layer provided with a plurality of RX electrodes for detecting a pen alternating magnetic field generated by a pen that has accumulated energy through an alternating magnetic field from a TX electrode layer, the TX electrode layer being provided with TX electrodes that use electromagnetic induction to generate an alternating magnetic field for detecting the position of the pen, the RX electrode layer being surrounded by touch electrodes formed by a grid electrode pattern on a surface-embedded touch layer of the surface-embedded mutual capacitance type touch sensor, and the RX electrode wiring being formed in a straight line by jump wiring to connect adjacent floating patterns in the extending direction of the RX electrodes to each other.

[0034] Mode 2: One or more embodiments of the present invention propose a sensor including a surface-embedded mutual capacitance type touch sensor and an electromagnetic induction type sensor, and a first electrode group constituting the surface-embedded mutual capacitance type touch sensor and a second electrode group constituting the electromagnetic induction type sensor are composed of three or fewer layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed.

[0035] Mode 3: One or more embodiments of the present invention propose a position detection device that uses electromagnetic induction to detect the position of a pen. The position detection device includes: a TX electrode layer provided with TX electrodes for generating an alternating magnetic field; an RX electrode layer provided with a plurality of RX electrodes for detecting a pen alternating magnetic field generated by a pen that has accumulated energy through the alternating magnetic field; a surface-embedded mutual capacitance type touch sensor; a display for controlling display pixels and the lighting / extinguishing of the display pixels; and a support plate provided on the lower side farther from the pen than the display, the RX electrode layer being surrounded by touch electrodes formed by a grid electrode pattern on a surface-embedded touch layer of the surface-embedded mutual capacitance type touch sensor, and the RX electrodes being formed in a straight line by jump wiring to connect adjacent floating patterns in the extending direction of the RX electrodes to each other.

[0036] [Advantages of the Invention]

[0037] According to one or more embodiments of the present invention, there is an effect that the performance as a position detection device can be maintained, the stacked structure can be made thinner, and the designability can be improved. Description of the Drawings

[0038] Figure 1 It is a diagram schematically showing the configuration of a touch sensor in the sensor according to the first embodiment of the present invention.

[0039] Figure 2It is a diagram showing the configuration pattern of the grid electrode layer on the transparent substrate of the touch sensor in the sensor of the first embodiment of the present invention.

[0040] Figure 3 It is a diagram showing the jump wiring on the back surface of the transparent substrate of the touch sensor in the sensor of the first embodiment of the present invention.

[0041] Figure 4 It is in the sensor of the first embodiment of the present invention Figure 2 of the grid electrode layer and Figure 3 a diagram showing the overlapping of the jump wiring.

[0042] Figure 5 It is a diagram showing the operation mode during the electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method using the sensor of the first embodiment of the present invention.

[0043] Figure 6 It is a diagram showing a structural example of the TX sensor coil group in the position detection device using the sensor of the first embodiment of the present invention.

[0044] Figure 7 It is a diagram showing the operation mode process for pen detection based on the electromagnetic induction method using the sensor of the first embodiment of the present invention.

[0045] Figure 8 It is a diagram showing an example of the stacked structure in the case of combining (or assembling) a position detection sensor, a touch sensor for detecting a finger or the like by the electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device in the sensor related to the second embodiment of the present invention.

[0046] Figure 9 It is a diagram showing the structure of the sensor of the second embodiment of the present invention.

[0047] Figure 10 It is a diagram showing the operation mode process for pen detection position detection based on the electromagnetic induction method using the sensor of the second embodiment of the present invention.

[0048] Figure 11 It is a conceptual diagram showing the coordinate derivation operation of the position detection device of the second embodiment of the present invention.

[0049] Figure 12 It is a diagram showing the wiring method in a modified example of the sensor of the second embodiment of the present invention.

[0050] Figure 13 It is a diagram showing the wiring method in a modified example of the sensor of the second embodiment of the present invention.

[0051] Figure 14 It is a conceptual diagram showing the coordinate derivation operation in a modification of the position detection device according to the third embodiment of the present invention.

[0052] Figure 15A It is a diagram showing an example of a stacked structure when the position detection device according to the third embodiment of the present invention, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled).

[0053] Figure 15B It is a diagram showing an example of a stacked structure when the position detection device according to the third embodiment of the present invention, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled).

[0054] Figure 16 It is a diagram showing an example of a stacked structure when the position detection device according to the fourth embodiment of the present invention, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled).

[0055] Figure 17 It is a diagram showing a configuration example of the TX sensor coil group in the position detection device according to the fourth embodiment of the present invention.

[0056] Figure 18A It is a diagram showing an example of a stacked structure when the position detection device according to the fifth embodiment of the present invention, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled).

[0057] Figure 18B It is a diagram showing an example of a stacked structure when the position detection device according to the fifth embodiment of the present invention, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled).

[0058] Figure 19 It is a diagram showing a structural example of the TX sensor coil group in the position detection device according to the fifth embodiment of the present invention.

[0059] Figure 20 It is a conceptual diagram showing the coordinate derivation operation of the position detection device of the existing example.

[0060] Figure 21 It is a diagram showing an existing stacked structure when the position detection device of the existing example, a touch sensor for detecting a finger or the like by an electrostatic capacitance (self-capacitance or mutual-capacitance) method, and a display device are combined (or assembled). Detailed implementation manners

[0061] Hereinafter, Figures 1 to 19 the implementation manners of the present invention will be described.

[0062] <First implementation manner>

[0063] Using Figures 1 to 7 the sensor 1 of this implementation manner will be described.

[0064] <Structure of sensor 1>

[0065] As Figures 1 to 4 shown, the sensor 1 of this implementation manner is configured to include an in-cell mutual capacitance type touch sensor TS1 and an RX electrode layer (RX sensor coil group 200) for detecting the position of a pen using electromagnetic induction.

[0066] As Figure 1 shown, the in-cell mutual capacitance type touch sensor TS1 is an integrated sensor (Integrated / Universal Sensor Module) provided on the upper part where the TFT back panel layer 302 and the display front panel layer 301 are laminated.

[0067] The in-cell mutual capacitance type touch sensor TS1 is provided, for example, between a glass substrate and the display front panel layer 301, and the glass substrate is provided with a polarizer and a color filter (not shown) provided on the upper part of the display front panel layer 301.

[0068] The in-cell mutual capacitance type touch sensor TS1 is, for example, a mutual capacitance type touch sensor.

[0069] The RX electrode layer (RX sensor coil group 200) is a sensor for detecting a pen alternating magnetic field generated by accumulating energy through an alternating magnetic field from the TX electrode layer. The TX electrode layer is provided with a TX electrode that generates an alternating magnetic field for detecting the position of a pen using electromagnetic induction, and a plurality of RX electrodes are arranged on the RX electrode layer (RX sensor coil group 200).

[0070] In addition, the detailed structure of the RX electrode layer (RX sensor coil group 200) for detecting the position of a pen using electromagnetic induction will be described later.

[0071] In the sensor 1 according to this embodiment, for example, as Figure 4 shown, an RX electrode layer (RX sensor coil group 200) for detecting the position of a pen using electromagnetic induction is integrated with the grid electrode pattern in the in-cell touch layer of the in-cell mutual capacitance touch sensor TS1.

[0072] <Structure of the In-cell Mutually Capacitive Touch Sensor TS1>

[0073] As Figure 2 shown, when observing the in-cell mutually capacitive touch sensor TS1 from above, the in-cell mutually capacitive touch sensor TS1 is formed as a grid pattern of a grid electrode layer provided on one surface of a transparent substrate.

[0074] The in-cell mutually capacitive touch sensor TS1 includes a plurality of first sensor electrodes (TX electrodes for touch panel) 210 and a plurality of second sensor electrodes 220 (RX electrode layer for touch panel).

[0075] The plurality of first sensor electrodes (TX electrodes for touch panel) 210 and the plurality of second sensor electrodes 220 (RX electrode layer for touch panel) overlap with a display area (not shown).

[0076] A plurality of first sensor electrodes 210 are arranged in the Figure 2 D1 direction shown.

[0077] As Figure 2 shown, the first sensor electrode 210 is, for example, a diamond shape composed of a floating pattern 611 and a peripheral portion 612 surrounding the floating pattern 611.

[0078] The peripheral portion 612 of the first sensor electrode 210 is connected to the peripheral portion 612 of the first sensor electrode 210 adjacent in the D1 direction through a grid connection portion 613 to form a first touch sensor wiring (T0 to T4).

[0079] The grid connection portion 613 is formed of the same material as the first sensor electrode 210.

[0080] The first sensor electrode 210 is insulated from grid patterns (for example, the floating pattern 611, the second sensor electrode 220) that do not form the first touch sensor wiring in the grid electrode layer.

[0081] As Figure 2 shown, the D1 direction intersects with the D2 direction.

[0082] The first sensor electrode 210 is a transmitting electrode in the in-cell mutually capacitive touch sensor TS1.

[0083] A plurality of second sensor electrodes 220 are arranged in the Figure 2 D2 direction shown.

[0084] As Figure 2 shown, the second sensor electrode 220 is, for example, a diamond shape composed of a floating pattern 611 and a peripheral portion 612 surrounding the floating pattern 611.

[0085] As Figure 4 shown, the peripheral portion 612 of the second sensor electrode 220 is connected to the peripheral portion 612 of the second sensor electrode 220 adjacent in the D2 direction on the back side of the transparent substrate through the jumper wiring 703, forming the second touch sensor wiring (TR0 to TR5).

[0086] Since the jumper wiring 703 is provided for connection on the back side of the transparent substrate, the grid connection portion 613 is insulated from the jumper wiring 703 and does not need to be made of the same material as the second sensor electrode 220.

[0087] The second sensor electrode 220 is a receiving electrode in the surface-mounted mutual capacitance type touch sensor TS1, and one end of the second touch sensor wiring (TR0 to TR5) is connected to a touch sensor signal receiving circuit (not shown).

[0088] <Structure of the <RX electrode layer (RX sensor coil group 200)>>

[0089] As Figure 3 , Figure 4 shown, the <RX electrode layer (RX sensor coil group 200)> in the sensor 1 of the present embodiment is formed by connecting one ends of the EMR sensor wirings (ER0 to ER5) to each other by the jumper wiring 702, and the EMR sensor wirings (ER0 to ER5) are formed by connecting the peripheral portion 612 of the first sensor electrode 210 to the peripheral portion 612 of the first sensor electrode 210 adjacent in the D2 direction by the jumper wiring 701.

[0090] The <RX electrode layer (RX sensor coil group 200)> is a receiving electrode in the EMR sensor, and the other end of the EMR sensor wiring is connected to an RX signal receiving circuit (not shown).

[0091] Since the jumper wirings 701 and 702 are provided for connection on the back side of the transparent substrate, the jumper wirings 701 and 702 do not need to be made of the same material as the second sensor electrode 220.

[0092] <Operation mode during electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method>

[0093] Using Figure 5 , the operation mode during the electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method in the sensor 1 of the present embodiment will be described.

[0094] During the capacitance detection operation, the sensor 1 of the present embodiment performs the capacitance detection operation using the first touch sensor wirings T0 to T4 formed by a plurality of first sensor electrodes (TX electrodes for touch panel) 210 and the second touch sensor wirings TR0 to TR5 formed by a plurality of second sensor electrodes (RX electrodes for touch panel) 220.

[0095] Specifically, the TX circuit 10 on the left side in the figure drives one end of the first touch sensor wiring T1 selected by the switch 11 among the first touch sensor wirings T0 to T4 through a positive-phase touch signal.

[0096] On the other hand, the TX circuit 10 on the right side in the figure drives the other end of the first touch sensor wiring T1 selected by the switch 11 among the first touch sensor wirings T0 to T4 through a positive-phase touch signal.

[0097] Thereby, a desired potential (TX signal for touch sensor) can be supplied to the first touch sensor wiring T1.

[0098] The RX circuit 20 detects the change of the mutual capacitance at the intersection (the intersection of T1 and TR2) with respect to the reference value through the selected second touch sensor line TR2.

[0099] The RX circuit 20 obtains the change of each intersection of the capacitance as a two-dimensional heat map, and uses operations such as centroid calculation used in capacitance detection to derive the position of finger touch.

[0100] <Pen detection based on electromagnetic induction method>

[0101] In order to perform pen detection based on the electromagnetic induction method using the sensor 1 of the present embodiment, a TX electrode layer (TX sensor coil group 100) provided in the layer below the sensor 1 and an RX electrode layer (RX sensor coil group 200) provided in the sensor 1 are used.

[0102] Hereinafter, Figure 6 An example of the structure of the TX electrode layer (TX sensor coil group 100) is used to illustrate the operation of pen detection based on the electromagnetic induction method.

[0103] <Structure of TX electrode layer (TX sensor coil group 100)>

[0104] Figure 6 It is a diagram showing a configuration example of the TX electrode layer (TX sensor coil group 100).

[0105] The structure of the TX electrode layer (TX sensor coil group 100) of this figure is particularly effective especially when the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided in different layers separated from each other and are set as a single layer.

[0106] The TX electrode layer (TX sensor coil group 100) is formed on one side of the substrate.

[0107] As Figure 6 shown, the TX electrode layer (TX sensor coil group 100) includes TX electrodes 120 ··· TX electrode 135 that respectively constitute TX sensors coils T0, T1, … T15, and a connection conductor 130 that is a connection part for connecting the TX electrodes 120 to TX electrode 135 to each other, and is configured in a comb shape (SAW shape).

[0108] The position detection device control switch 11 having the sensor 1 and the TX electrode layer (TX sensor coil group 100) of this embodiment, for example, bundles the TX electrode 125 and the TX electrode 126 and connects them to the TX terminal of the TX circuit 10, and bundles the TX electrode 128 and the TX electrode 129 and connects them to the TX_inv terminal of the TX circuit 10.

[0109] The TX circuit 10 controls the TX terminal and the TX_inv terminal so that the change amount of the current is in reverse phase. Thus, between the bundle of the TX electrode 125 and the TX electrode 126 and the bundle of the TX electrode 128 and the TX electrode 129 (near the TX electrode 127), a stronger transmitted magnetic field is formed compared to the case where they are not bundled and compared to the case where TX_inv is set to a fixed potential.

[0110] In addition, the switch 11 and the TX circuit 10 can be installed on separate integrated circuits, or can be integrated on the same integrated circuit.

[0111] <Operation mode during pen detection based on electromagnetic induction method>

[0112] Using Figure 7 , the operation mode during pen detection based on electromagnetic induction method in the sensor 1 of this embodiment will be described.

[0113] In addition, in Figure 7 , during pen detection based on electromagnetic induction method, the components related to the electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method do not function, so the display is omitted.

[0114] Figure 6During transmission, the TX circuit 10 shown in the lower left drives one end of the sensor coils (T5 and T6 in the figure) selected by the switch 11 among the TX sensor coils T0 to T4 of the transmission sensor coil group (TX sensor coil group 100) of the pen position sensor via the TX terminal with a positive-phase signal.

[0115] Next, using an anti-phase signal that generates a change in current opposite to the change in current of the positive-phase signal, drive one end of the sensor coils (T8 and T9 in the figure) selected by the switch 11 via the TX_inv terminal.

[0116] Thereby, a strong transmission magnetic field can be formed near the pen position.

[0117] During the detection period after the transmission period, Figure 7 The RX circuit 20 shown connects the RX sensor coils ER2 and ER3 that logically form a loop coil to the input terminal of the differential amplifier circuit via the switch 21, and detects the signal level of the pen signal passing through the loop coil.

[0118] After that, a two-dimensional heat map (RXdata) is obtained, and based on this two-dimensional heat map, the coordinates, inclination, azimuth of the inclination, etc. of the pen are derived.

[0119] <Function and Effect>

[0120] As described above, the sensor 1 of the present embodiment includes: an in-plane mutual capacitance type touch sensor TS1; and an RX electrode layer (RX sensor coil group 200) in which a plurality of RX electrodes are arranged, and the RX electrodes detect a pen alternating magnetic field generated by a pen that has accumulated energy using an alternating magnetic field from a TX electrode layer (TX sensor coil group 100). The TX electrode layer is provided with TX electrodes that generate an alternating magnetic field for detecting the position of the pen using electromagnetic induction. The RX electrode layer (RX sensor coil group 200) is surrounded by touch electrodes formed by a mesh electrode pattern of an in-plane touch layer provided in the in-plane mutual capacitance type touch sensor TS1, and the RX electrode wiring is formed in a straight line by connecting adjacent floating patterns to each other in the extension direction of the RX electrodes through jump wiring.

[0121] That is to say, in the sensor 1 according to the present embodiment, at least an RX electrode layer (RX sensor coil group 200) for performing pen detection based on the electromagnetic induction method is integrated into the in-plane mutual capacitance type touch sensor TS1.

[0122] In addition, the RX electrode layer (RX sensor coil group 200) is surrounded by touch electrodes formed by a mesh electrode pattern in the inlaid touch layer of the inlaid mutual capacitance touch sensor TS1. The RX electrode layer is formed by combining floating patterns adjacent to each other in the extending direction of the RX electrodes.

[0123] Therefore, in the position detection device using the sensor 1 of the present embodiment, the performance of the position detection device can be maintained, and the stacked structure can be made thinner to improve the designability.

[0124] In addition, in the sensor 1 of the present embodiment, floating patterns adjacent to each other in the extending direction of the RX electrodes are combined with each other by jump wiring.

[0125] That is, since the current flowing through the RX electrodes is a small current, jump wiring with a thin diameter can be used for the jump wiring.

[0126] Moreover, wiring is performed on the back side of the inlaid touch layer formed by the mesh electrode pattern.

[0127] Therefore, the stacked structure can be made thinner without impairing the visibility of the display, thereby improving the designability.

[0128] In the sensor 1 of the present embodiment, one end of the linearly formed EMR sensor wirings (ER0 to ER5) is connected to a circuit unit that receives a pen signal in response to an alternating magnetic field and obtains the level of the pen signal, and one end portions of the EMR sensor wirings (ER0 to ER5) are connected to each other by jump wiring 702.

[0129] Therefore, the RX electrode layer (RX sensor coil group 200) for position detection of a pen based on the electromagnetic induction method can reduce costs without impairing the visibility of the display, and can make the stacked structure thinner while maintaining the performance of the position detection device, thereby improving the designability.

[0130] <Second Embodiment>

[0131] Use Figures 8 to 13 , the sensor 1A of the present embodiment will be described.

[0132] <Structure of Sensor 1A>

[0133] As Figure 8 , Figure 9As shown, the sensor 1A of the present embodiment is configured to include: an in-cell mutual capacitance type touch sensor TS1; a TX electrode layer (TX sensor coil group 100) provided with TX electrodes that generate an alternating magnetic field for detecting the position of a pen using electromagnetic induction; and an RX electrode layer (RX sensor coil group 200) provided with a plurality of RX electrodes that detect a pen alternating magnetic field generated by a pen that has accumulated energy through the alternating magnetic field from the TX electrode layer (TX sensor coil group 100).

[0134] In addition, regarding the above-described components, their functions and the like are the same as those of the first embodiment, and thus detailed descriptions thereof are omitted.

[0135] <Stacked structure of a display using the sensor 1A>

[0136] Figure 8 It is a diagram showing an example of the stacked structure of a display using the sensor 1A of the present embodiment, based on a display structure called so-called in-cell touch.

[0137] In the display 300D, a TFT backplane layer 302 that controls the display front panel layer 301 and the display front panel layer 301 are provided.

[0138] Figure 8 It shows a so-called in-cell touch panel structure. An electrostatic capacitance type touch sensor TS1 is provided within the module of the display 300D, which is a layer above the display front panel layer 301.

[0139] The sensor 1A, for example, includes an in-cell mutual capacitance type touch sensor TS1 and an electromagnetic induction type sensor. The first electrode group constituting the in-cell mutual capacitance type touch sensor TS1 and the second electrode group constituting the electromagnetic induction type sensor are formed of 3 or fewer layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed.

[0140] That is, in the sensor 1A, the first electrode group constituting the in-cell mutual capacitance type touch sensor TS1 and the second electrode group constituting the electromagnetic induction type sensor are formed of 3 or fewer layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed (hereinafter, appropriately referred to as a "mixed layer").

[0141] More specifically, the sensor 1A may also be composed of, for example, at least a first layer provided with a first electrode group constituting the surface-embedded mutual capacitance type touch sensor TS1, a second layer (mixed presence layer) provided with auxiliary wirings connecting between a part of the electrode groups of the first electrode group and a part of the electrode group of the second electrode group constituting the electromagnetic induction type sensor, and a third layer provided with another part of the electrode group of the second electrode group constituting the electromagnetic induction type sensor.

[0142] In addition, in the above, the first layer forming the surface-embedded mutual capacitance type touch sensor TS1, the mixed presence layer, and the layer forming a part of the electromagnetic induction type sensor are exemplified, but the mixed presence layer does not necessarily have to be the intermediate layer of the three-layer structure.

[0143] That is, as long as the performance and the like are not hindered, as long as there is a mixed presence layer, any combination is possible.

[0144] In addition, for example, as Figure 2 , Figure 3 , Figure 9 shown, the sensor 1A may also be a two-layer structure composed of a common layer and a mixed presence layer. The common layer shares a part of the electrode group extending in the first direction of the surface-embedded mutual capacitance type touch sensor TS1 and a part of the electrode group of the second electrode group that generates an alternating magnetic field for detecting the position of the pen in the electromagnetic induction type sensor. The mixed presence layer connects the other part of the electrode group of the second electrode group and the electrode group of the surface-embedded mutual capacitance type touch sensor TS1 extending in the second direction intersecting the first direction via auxiliary wirings respectively. The other part of the electrode group of the second electrode group detects the pen alternating magnetic field generated by the pen that has accumulated energy through the alternating magnetic field from a part of the electrode group of the second electrode group.

[0145] Here, the auxiliary wiring includes, for example, jump wiring or bridge wiring.

[0146] The auxiliary wiring (such as jump wire or bridge wiring) is a conductor provided on the layer where the wirings electrically connected by the auxiliary wiring are formed, and forms a touch sensor or an electromagnetic induction type sensor in complement with the conductors formed on other layers.

[0147] As Figure 12 shown, the peripheral portions of the first sensor electrodes 210 adjacent to each other in the first direction are connected to each other through a plurality of wirings or a connecting portion formed by a wide-width wiring. Among the other part of the electrode groups in the second electrode group, the floating patterns 611 of the second sensor electrodes 220 adjacent to each other in the extending direction are connected to each other through a plurality of auxiliary wirings.

[0148] The shapes of the second sensor electrodes 220 and the first sensor electrodes 210 are different from Figure 9 etc., but as shown conceptually in Figure 13As shown, a plurality of wirings are added to the peripheral portion 622 of the floating pattern 611 or the floating pattern 621 in the first sensor electrode 210 or the second sensor electrode 220.

[0149] The TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are configured to be integrated into the in-cell mutual capacitance touch sensor TS1.

[0150] Specifically, the in-cell mutual capacitance type touch sensor TS1 is an in-cell mutual capacitance type in-cell mutual capacitance touch sensor TS1, and the RX electrode layer (RX sensor coil group 200) has the structure shown in the first embodiment. Figure 9 As shown, for example, the TX electrode layer (TX sensor coil group 100A) is configured such that the T0 of a plurality of first sensor electrodes (TX electrodes for touch panel) 210 in the in-cell mutual capacitance touch sensor TS1 is used as the ET0 of the TX electrode layer (TX sensor coil group 100A).

[0151] As Figure 3 As shown, the shape of the coil group formed by connecting another part of the electrode group in the second electrode group through the auxiliary wiring is comb-shaped.

[0152] As Figure 9 As shown, the sensor electrodes 210 and 220 of the in-cell mutual capacitance touch sensor TS1 include floating patterns 611 and 621 and a peripheral portion that surrounds the floating patterns 611 and 621 from the outside. The linear coil group including the floating pattern 621 and the auxiliary wiring 702 from the open end side to the terminal side of the comb-shaped coil group is arranged so as not to overlap with the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction in the in-cell mutual capacitance touch sensor TS1 in a top view.

[0153] Here, the comb shape refers to the shape formed by the following first wiring and a plurality of second wirings.

[0154] The first wiring is a wiring extending in the first direction, and the second wirings are a plurality of wirings extending in a second direction intersecting the first direction. The plurality of second wirings are arranged side by side at a predetermined interval in the first direction.

[0155] And the first wiring is electrically connected to the plurality of second wirings.

[0156] Here, for convenience, in the plurality of second wirings, if the side connected to the first wiring is set as the terminal and the other end is set as the open end, one ends of the plurality of second wirings are all connected to the first wiring and the other ends are open, and its shape is comb-shaped.

[0157] The open ends at the other ends of the plurality of second wirings are connected to the integrated circuit, for example, to provide a drive signal or detect a received signal.

[0158] <Pen Detection Based on Electromagnetic Induction Method>

[0159] Hereinafter, Figure 10 will be used to describe the operation mode during pen detection based on the electromagnetic induction method in the sensor 1A of the present embodiment.

[0160] In addition, the operation mode during electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method is the same as that of the first embodiment, so detailed description thereof is omitted.

[0161] In addition, Figure 10 during pen detection based on the electromagnetic induction method, the components related to electrostatic capacitance (finger touch) detection based on the electrostatic capacitance detection method do not function, so the display thereof is omitted.

[0162] Figure 10 The TX circuit 10 shown on the left drives one end of the sensor coil (TX sensor coil) T0 to T4 of the transmission sensor coil group (TX sensor coil group 100A) selected by the switch 11 with a positive-phase signal via the TX terminal during the transmission period.

[0163] On the other hand, the other end of the sensor coil (TX sensor coil, T3 in the figure) selected by the switch 11 is driven via the TX_inv terminal by an anti-phase signal that generates a change in current opposite to the change in current of the positive-phase signal.

[0164] At the same time, the TX circuit 10 located on the right side in the figure drives the other end of the sensor coil (TX sensor coil, T3 in the figure) selected by the switch 11 via the TX_inv terminal by an anti-phase signal that generates a change in current opposite to the change in current of the positive-phase signal.

[0165] On the other hand, the other end of the sensor coil (TX sensor coil, T1 in the figure) selected by the switch 11 in the transmission sensor coils T0 to T4 of the transmission sensor coil group (TX sensor coil 100A) is driven with a positive-phase signal via the TX terminal.

[0166] Thus, the above-mentioned strong transmission magnetic field can be formed near the pen position (near T2 in the figure).

[0167] During the detection period after the transmission period, the RX circuit 20 connects the RX sensor coil ER2 and the RX sensor coil ER3 that logically form a loop coil to the input terminal of the differential amplifier circuit via the switch 21, and detects the signal level of the pen signal passing through the loop coil.

[0168] Then, a two-dimensional heat map (RXdata) is obtained, and the coordinates, tilt, azimuth of the tilt, etc. of the pen are derived based on this two-dimensional heat map.

[0169] <Function and Effect>

[0170] As described above, the sensor 1A according to this embodiment is configured to include: an in-cell mutual capacitance type touch sensor TS1; a TX electrode layer (TX sensor coil group 100) provided with TX electrodes that generate an alternating magnetic field for detecting the position of the pen by electromagnetic induction; and an RX electrode layer (RX sensor coil group 200) provided with a plurality of RX electrodes that detect the alternating magnetic field generated by the pen that has accumulated energy using the alternating magnetic field from the TX electrode layer (TX sensor coil group 100).

[0171] That is, in the sensor 1A of this embodiment, in the sensor 1 of the first embodiment, the first sensor electrode (TX electrode for touch panel) 210 in the in-cell mutual capacitance type touch sensor TS1 is used as the TX electrode layer (TX sensor coil group 100A) for performing pen detection based on the electromagnetic induction method when performing pen detection based on the electromagnetic induction method, thereby integrating the in-cell mutual capacitance type touch sensor TS1 and the EMR sensor.

[0172] Therefore, in the position detection device using the sensor 1A of this embodiment, the performance as a position detection device can be maintained, and the stacked structure can be made thinner to improve the designability.

[0173] In addition, floating patterns adjacent to each other in the extending direction of the RX electrode are connected to each other by jumper wirings.

[0174] That is, since the current flowing through the RX electrode is a small current, jumper wirings with a thin diameter can be used for the jumper wirings, and the wirings are performed on the back side of the in-cell touch layer formed by the grid electrode pattern.

[0175] Therefore, the stacked structure can be made thinner without impairing the visibility of the display to improve the designability.

[0176] In addition, the TX electrode layer (TX sensor coil group 100A) includes a first sensor electrode (TX electrode for touch panel) 210, and the first sensor electrode 210 includes touch electrodes formed by a grid electrode pattern provided in the in-cell touch layer of the in-cell mutual capacitance touch sensor TS1.

[0177] Therefore, even when the RX electrode layer (RX sensor coil group 200) and the TX electrode layer (TX sensor coil group 100A) are integrated into the in-cell mutual capacitance type touch sensor TS1, the thickness of the stacked structure can be reduced and the designability can be improved without impairing the visibility of the display.

[0178] The sensor 1A of the present embodiment includes an in-cell mutual capacitance type touch sensor TS1 and an electromagnetic induction type sensor, and the first electrode group constituting the in-cell mutual capacitance type touch sensor TS1 and the second electrode group constituting the electromagnetic induction type sensor are formed of three or less layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed.

[0179] That is, in the sensor 1A, the first electrode group constituting the in-cell mutual capacitance type touch sensor TS1 and the second electrode group constituting the electromagnetic induction type sensor are formed of three or less layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed (hereinafter, appropriately referred to as "mixed layer").

[0180] Therefore, it is possible to thin the stacked structure while maintaining the performance as a position detection device.

[0181] In addition, by implementing the above-described stacked structure, the optical characteristics of the display device can be improved, and the designability of the display device can be improved.

[0182] The sensor 1A of the present embodiment is at least composed of a first layer provided with the first electrode group constituting the in-cell mutual capacitance type touch sensor TS1, a second layer (mixed layer) provided with auxiliary wirings connecting between a part of the electrode groups of the first electrode group and a part of the electrode groups of the second electrode group constituting the electromagnetic induction type sensor, and a third layer provided with the other part of the electrode groups of the second electrode group constituting the electromagnetic induction type sensor.

[0183] Therefore, it is possible to thin the stacked structure while maintaining the performance as a position detection device.

[0184] In addition, by implementing the above-described stacked structure, the optical characteristics of the display device can be improved, and the designability of the display device can be improved.

[0185] In the sensor 1A according to the present embodiment, it has a two-layer structure composed of a common layer and an integrated layer. The common layer shares a part of the electrode groups extending in the first direction of the in-cell mutual capacitance type touch sensor TS1 and a part of the electrode groups of the second electrode group that generates an alternating magnetic field for detecting the position of a pen in the electromagnetic induction type sensor. The integrated layer connects, via auxiliary wirings, the other part of the electrode groups of the second electrode group that detects the alternating magnetic field generated by the pen that has accumulated energy through the alternating magnetic field from a part of the electrode groups of the second electrode group and the electrode groups extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1, respectively.

[0186] Therefore, while maintaining the performance as a position detection device, the stacked structure can be further thinned.

[0187] In addition, by implementing the above stacked structure, the optical characteristics of the display device can be further improved, and the designability of the display device can be further enhanced.

[0188] In the sensor 1A of the present embodiment, the auxiliary wiring includes jump wiring or bridge wiring, etc.

[0189] Therefore, while maintaining the performance as a position detection device, the stacked structure can be thinned.

[0190] In addition, by implementing the above stacked structure, the optical characteristics of the display device can be improved, and the designability of the display device can be enhanced.

[0191] In the sensor 1A of the present embodiment, the shape of the coil group formed by connecting the other part of the electrode groups in the second electrode group using the auxiliary wiring is a comb shape.

[0192] That is, the coil group 200 formed by connecting the other part of the electrode groups in the second electrode group through the auxiliary wiring is formed in a comb shape, so that adjacent coils do not overlap each other and have a gap therebetween, and it becomes a single-turn winding (not multi-turn winding).

[0193] Therefore, the optical characteristics of the display device can be improved.

[0194] In addition, while maintaining the performance as a position detection device, the coil group 200 formed by connecting the other part of the electrode groups in the second electrode group through the auxiliary wiring is formed in a comb shape, whereby the stacked structure can be thinned and the designability of the display device can be enhanced.

[0195] In the sensor 1A of the present embodiment, the sensor electrodes 210 and 220 of the in-cell mutual capacitance type touch sensor TS1 include floating patterns 611 and 621 and a peripheral portion surrounding the floating patterns 611 and 621 from the outside. The linear coil group including the floating pattern 621 and the auxiliary wiring 702 from the open end side of the comb-shaped coil group toward the terminal side is arranged so as not to overlap with the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1 in a top view.

[0196] That is, as Figure 9 shown, in a top view, the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1 is arranged between the linear coil group including the floating pattern 621 and the auxiliary wiring 702 from the open end side of the comb-shaped coil group toward the terminal side.

[0197] If the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1 and the linear coil group including the floating pattern 621 and the auxiliary wiring 702 from the open end side of the comb-shaped coil group toward the terminal side overlap in a top view, a relatively large parasitic capacitance will be generated between the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1 and the linear coil group including the floating pattern 621 and the auxiliary wiring 702, resulting in impaired performance.

[0198] In the sensor 1A of the present embodiment, in a top view, the linear coil group including the peripheral portion 622 and the auxiliary wiring 703 extending in the second direction intersecting the first direction of the in-cell mutual capacitance type touch sensor TS1 is arranged between the linear coil group including the floating pattern 621 and the auxiliary wiring 702 from the open end side of the comb-shaped coil group toward the terminal side. Thereby, the generation of a large parasitic capacitance can be prevented, and no physical overlap occurs, so that the optical characteristics of the display device can be improved.

[0199] In addition, the performance as a position detection device can be maintained, the thickness of the stacked structure can be reduced, and the designability of the display device can be improved.

[0200] In the sensor 1A of the present embodiment, the peripheral portions of the first sensor electrodes 210 adjacent to each other in the first direction are connected to each other through a plurality of wirings or a connecting portion formed of a wide-width wiring, and in another part of the electrode groups in the second electrode group, the floating patterns 611 of the second sensor electrodes 220 adjacent to each other in the extending direction are connected to each other through a plurality of auxiliary wirings.

[0201] That is, as Figure 12 shown, the peripheral portions of the first sensor electrodes 210 adjacent to each other in the first direction are connected to each other through a plurality of wirings or a connecting portion formed of a wide-width wiring.

[0202] In addition, in another part of the electrode groups in the second electrode group, the floating patterns 611 of the second sensor electrodes 220 adjacent to each other in the extending direction are connected to each other through a plurality of auxiliary wirings.

[0203] By adopting such a connection method, the connection impedance between the electrodes can be reduced.

[0204] Moreover, by providing a plurality of wirings, a reduction in visibility can be suppressed.

[0205] In the sensor 1A according to the present embodiment, a plurality of wirings are attached to the peripheral portion 622 of the floating pattern 611 or the floating pattern 621 in the first sensor electrode 210 or the second sensor electrode 220.

[0206] By adopting such a method, the impedance of the peripheral portion 622 of the floating pattern 611 or the floating pattern 621 in the first sensor electrode 210 or the second sensor electrode 220 can be reduced.

[0207] <Third Embodiment>

[0208] Hereinafter, the position detection device 2 of the present embodiment will be described with reference to Figures 14 to 1 5.

[0209] <Structure of the Position Detection Device 2>

[0210] As Figure 13 shown, the position detection device 2 includes a TX circuit 10, a switch 11, a TX sensor coil group 100, an RX sensor coil group 200, an RX circuit 20, and peripheral circuits such as an amplifier.

[0211] In addition, since the position detection device 2 of the present embodiment is a position detection device using the sensor 1 of the first embodiment, the detailed description of the RX sensor coil group 200 and the like is omitted.

[0212] The TX sensor coil group 100 is a plurality of wires each having a plurality of electrodes arranged side by side in the first direction (X-axis direction) of the sensor.

[0213] The TX sensor coils forming the TX sensor coil group 100 include, for example, rectangular toroidal coils.

[0214] The TX sensor coils forming the TX sensor coil group 100 are arranged at equal intervals, for example.

[0215] The TX circuit 10 functions as an alternating magnetic field generation unit that sends a signal to the TX sensor coil group 100 via the switch 11 and generates an alternating magnetic field from the TX sensor coil group 100.

[0216] That is, in the position detection device 2 of the present embodiment, the TX sensor coils T0, T1, …, T4 are connected to the TX circuit 10 and are used to generate an alternating magnetic field, but not for detecting pen signals.

[0217] The RX circuit 20 functions as a pen signal level acquisition unit that uses a plurality of electrodes of the RX sensor coil group 200 to receive a response alternating magnetic field (i.e., a pen signal) from the position indicator accumulated by the alternating magnetic field and acquires the level of the pen signal.

[0218] Specifically, the RX circuit 20 derives, for example, the coordinates of the pen at the intersection points of a plurality of electrodes (TX electrodes) arranged in parallel in the first direction (X-axis direction) of the sensor and a plurality of electrodes (RX electrodes) arranged in parallel in the second direction (Y-axis direction) intersecting the first direction (X-axis direction).

[0219] That is, the RX sensor coils R0, R1, …, R4 are connected to the RX circuit 20 and are used to detect pen signals, but not for generating a magnetic field to be sent out.

[0220] The RX circuit 20 functions as an information derivation unit that derives information related to the position of the position indicator using the two-dimensional distribution of the levels of pen signals at the respective intersection points of a plurality of wires of the TX sensor coil group 100 and a plurality of electrodes of the RX sensor coil group 200.

[0221] Here, among the information related to the position of the pen (position indicator), it includes either the inclination of the pen with respect to the normal line of the sensor plane (XY plane formed by the X-axis and the Y-axis) or the direction of the inclination of the pen with respect to the sensor plane.

[0222] The information derivation unit of the RX circuit 20 derives either the inclination of the pen with respect to the normal line of the sensor plane or the direction of the inclination of the pen with respect to the sensor plane based on the asymmetry of the two-dimensional distribution.

[0223] The information derivation unit of the RX circuit 20 obtains the indicated position of the pen tip, i.e., the first reference position, obtains the second reference position that protrudes upward or downward, and derives the direction of the pen's tilt relative to the sensor plane based on the direction of the second reference position relative to the first reference position.

[0224] The information derivation unit of the RX circuit 20 derives the tilt of the pen relative to the normal of the sensor plane based on the level intensity of the pen signal at the first reference position and the level intensity of the pen signal at the second reference position.

[0225] <Processing of the position detection device 2>

[0226] The position detection device 2 switches and selects one TX sensor coil from the TX sensor coil group 100 that generates the transmission magnetic field by the TX circuit 10 through the switch 11, and drives the selected TX sensor coil through the TX circuit 10 to transmit the transmission magnetic field.

[0227] In Figure 11 shows the state where the TX sensor coil T1 is selected.

[0228] After a certain transmission period, that is, after the period during which if there is a pen near the TX sensor coil, a specified amount of energy should be accumulated, the position detection device 2 obtains the level of the pen signal at all positions of the RX sensor coils.

[0229] The position detection device 2 detects the level values (33, 105, 118, 121, 110 in the figure) of the pen signal in the area where the TX sensor coil T1 and the RX sensor coils R1 and R4 cross (hereinafter referred to as the coil crossing point area).

[0230] The position detection device 2 sequentially switches the selection of the TX sensor coil for the signal level at each coil crossing point, thereby obtaining the two-dimensional heat map data RXdata.

[0231] After obtaining the two-dimensional heat map data RXdata, the position detection device 2 performs the processes in the coordinate processing, and obtains the coordinates of the pen, the tilt of the pen (the angle from the normal relative to the sensor surface), or the orientation of the pen (the azimuth of the tilt) based on the two-dimensional heat map data RXdata.

[0232] <Stacked structure of the position detection device 2>

[0233] Use Figure 15A and Figure 15B to describe the stacked structure of the position detection device 2 according to the present embodiment.

[0234] In addition, the stacked structure described below is not limited to the position detection device 2 of the present embodiment, and can also be applied to Figure 14 the position detection device 2A shown inFigure 20 The position detection device of the prior example shown in etc.

[0235] <Stacked structure 1 of position detection device 2>

[0236] Figure 15A The stacked structure 1 of the position detection device 2 shown has: a TX electrode layer (TX sensor coil group 100) provided with TX electrodes that generate an alternating magnetic field; a display 300E that controls display pixels and the lighting / extinguishing of the display pixels; and an RX electrode layer (RX sensor coil group 200) disposed on the opposite side of the side where the TX electrode layer (TX sensor coil group 100) is provided with the display 300E as the center, and a plurality of RX electrodes are arranged, and the RX electrode detects the pen alternating magnetic field generated by the pen that has accumulated energy through the alternating magnetic field.

[0237] That is, Figure 15A The stacked structure 1 of the position detection device 2 shown is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0238] As Figure 15A Shown, in the stacked structure 1 of the position detection device 2, the TX electrode layer (TX sensor coil group 100) is provided on the TFT backplane layer 302 to form, and the RX electrode layer (RX sensor coil group 200) is provided on the layer above the display front panel layer 301 where the surface-mounted mutual capacitance type touch sensor TS1 is provided to form the display 300E.

[0239] A protective glass is bonded above the display 300E with an adhesive or the like.

[0240] In addition, in the case of this structure, a capacitive touch sensor shown in the first embodiment and a sensor 1 integrating the RX electrode layer (RX sensor coil group 200) are provided above the display front panel layer 301.

[0241] In addition, a magnetic shielding plate can also be provided below the TX electrode layer (TX sensor coil group 100).

[0242] <Stacked structure 2 of position detection device 2>

[0243] As Figure 15BAs shown, in the stacked structure 2 of the position detection device 2, the TX electrode layer (TX sensor coil group 100) is not provided on the TFT back panel layer 302, but on the lower side of the display 300F. An in-cell mutual capacitance type touch sensor (capacitive sensor) TS1 and an RX electrode layer (RX sensor coil group 200) are provided on the layer above the front panel layer 301 of the display where the in-cell mutual capacitance type touch sensor is provided, and a glass cover is provided on its upper side.

[0244] That is, Figure 15B The stacked structure 2 of the position detection device 2 shown is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0245] In addition, in the case of this structure, the in-cell mutual capacitance touch sensor TS1 shown in the first embodiment and the sensor 1 integrated with the RX electrode layer (RX sensor coil group 200) are provided on the upper side of the display front panel layer 301.

[0246] In addition, a magnetic shielding plate can also be provided on the lower side of the TX electrode layer (TX sensor coil group 100).

[0247] <Function and Effect>

[0248] The position detection device 2 of the present embodiment is a position detection device that uses electromagnetic induction to detect the position of a pen, and includes: a TX electrode layer (TX sensor coil group 100) provided with TX electrodes that generate an alternating magnetic field; an RX electrode layer (RX sensor coil group 200) provided with a plurality of RX electrodes that detect the pen alternating magnetic field generated by a pen that has accumulated energy through the alternating magnetic field; an in-cell mutual capacitance type touch sensor TS1; and displays 300E and 300F that control the display pixels and the lighting / extinguishing of the display pixels. The RX electrode layer (RX sensor coil group 200) is surrounded by touch electrodes formed by a grid electrode pattern of an in-cell touch layer provided in the in-cell mutual capacitance type touch sensor. The floating patterns adjacent to each other in the extending direction of the RX electrodes are combined with each other by jumper wiring, and the RX electrodes are formed in a linear shape. The TX electrode layer (TX sensor coil group 100) is formed on a layer lower than the displays 300E and 300F.

[0249] That is to say, in the position detection device 2 of the present embodiment, the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided in separate different layers.

[0250] In addition, in the position detection device 2 of this embodiment, the RX electrode layer (RX sensor coil group 200) is integrated into the in-cell mutual capacitance touch sensor TS1.

[0251] Therefore, as Figure 13 shown in A, by integrating the RX electrode layer (RX sensor coil group 200) that operates with a current smaller than that of the TX electrode layer (TX sensor coil group 100) on the upper layer of the front panel layer 301 of the display provided with the in-cell mutual capacitance type touch sensor (electrostatic capacitance sensor) TS1, and integrating and arranging the TX electrode layer (TX sensor coil group 100) on the TFT back panel layer 302 below the front panel layer 301 of the display, it is possible to maintain the performance as a position detection device without impairing the visibility of the display 300E, and to make the stacked structure thinner and improve the designability.

[0252] As Figure 15B shown, the position detection device 2 according to this embodiment is configured such that the TX electrode layer (TX sensor coil group 100) is not provided on the TFT backplane layer 302, but on the TX electrode layer (TX sensor coil group 100) located below the display 300F, and on the layer above the front panel layer 301 of the display provided with the in-cell mutual capacitance type touch sensor (electrostatic capacitance sensor) TS1, an RX electrode layer (RX sensor coil group 200) is provided together with the in-cell mutual capacitance type touch sensor TS1, and a protective glass is provided on its upper side.

[0253] That is to say, in the position detection device 2 according to this embodiment, the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided in separate different layers.

[0254] Therefore, as Figure 15B shown, by integrating the RX electrode layer (RX sensor coil group 200) that operates with a current smaller than that of the TX electrode layer (TX sensor coil group 100) in the upper layer of the front panel layer 301 of the display provided with the in-cell mutual capacitance touch sensor (capacitance sensor) TS1, and providing the TX electrode layer (TX sensor coil group 100) below the display 300F, it is possible to reduce the thickness of the stacked structure and improve the designability without impairing the visibility of the display 300F, while maintaining the performance of the position detection device.

[0255] In the position detection device 2 of the present embodiment, it includes TX electrodes 120 to TX electrodes 135 that respectively constitute TX sensor coils T0, T1, … T15, and a connection conductor 130 as a second connection portion that connects the TX electrodes 120 to TX electrodes 135 to form a comb-shaped (SAW shape).

[0256] That is, in the position detection device 2 of the present embodiment, by controlling the switch 11, for example, the TX electrode 125 and the TX electrode 126 are bundled and connected to the TX terminal of the TX circuit 10, and the TX electrode 128 and the TX electrode 129 are bundled and connected to the TX_inv terminal of the TX circuit 10.

[0257] In addition, the TX circuit 10 controls the TX terminal and the TX_inv terminal so that the change amounts of the currents are in opposite phases, so that between the bundle of the TX electrode 125 and the TX electrode 126 and the bundle of the TX electrode 128 and the TX electrode 129 (near the TX electrode 127), compared with the case where they are not bundled, and compared with the case where TX_inv is set to a fixed potential, a stronger magnetic field for transmission can be formed.

[0258] In other words, by bundling a plurality of TX electrodes, even if a TX electrode layer (TX sensor coil group 100) is formed by TX electrodes with a narrow line width and a large impedance originally, a magnetic field for transmission with a desired intensity can be formed.

[0259] <Fourth Embodiment>

[0260] Use Figure 16 , Figure 17 , to describe the position detection device 3 of the present embodiment.

[0261] In addition, for the structure of the RX electrode layer (RX sensor coil group 200), it is the same as the structures of the first to third embodiments, so its detailed description will be omitted.

[0262] <Stacked Structure of Position Detection Device 3>

[0263] Figure 16 It shows a stacked structure including a flexible display, and the flexible display can be bent around the bending axis shown by the single-dot chain line in the figure in the direction in which the upper sides of the cover films approach each other (inward folding direction).

[0264] As Figure 16 shown, in the stacked structure 1 of the position detection device 3, the display 300G is the so-called in-cell mutual capacitance method TS1 shown in the first embodiment. The in-cell mutual capacitance method TS1 is provided in the layer above the display front panel layer 301, and the RX electrode layer (RX sensor coil group 200) is integrally provided.

[0265] That is, Figure 16 The stacked structure of the position detection device 3 shown is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0266] The TX electrode layer (TX sensor coil group 100) is formed on one side of the mounted support plate 400 opposite to the lower surface of the pen.

[0267] As Figure 16 shown, the TX electrode layer (TX sensor coil group 100) is directly provided on one side of the lower side surface of the support plate 400.

[0268] Preferably, the support plate 400 is made of a low-conductivity material that does not affect electromagnetic induction and is a rigid substrate such as a glass epoxy substrate (FR4, etc.) with rigidity. The TX electrode layer (TX sensor coil group 100) is provided by printing a conductive material such as copper, silver, or copper on one side ( Figure 16 the upper surface in) of the support plate 400.

[0269] The pad group of the TX electrode layer (TX sensor coil group 100) crimps the connector terminals on the FPC side and is connected to the controller via the FPC.

[0270] In addition, as Figure 16 shown, a magnetic shielding plate can also be provided on the lower side of the TX electrode layer (TX sensor coil group 100).

[0271] <Structure of TX Electrode Layer (TX Sensor Coil Group 100)>

[0272] Figure 17 is a diagram showing a configuration example of the TX electrode layer (TX sensor coil group 100).

[0273] Figure 17 The structure of the TX electrode layer (TX sensor coil group 100) shown is particularly effective in the case of using a flexible display that can be bent as in the structure example of Figure 16 .

[0274] In Figure 17 the structure shown, for example, in Figure 16 , the TX electrode layer (TX sensor coil group 100) is mounted by printing on the lower surface side of the support plate 400 relative to the pen.

[0275] As Figure 17As shown, the TX electrode layer (TX sensor coil group 100) includes TX electrodes 120 ··· TX electrodes 135 that respectively form TX sensor coils T0, T1, … T15, and connection conductors 130 that connect the TX electrodes 120 to TX electrodes 135 to each other, and is configured in a comb shape (SAW shape).

[0276] As Figure 17 shown, the TX electrodes 120 to 135 are connected to the pad group 140.

[0277] The pad group 140 of the TX electrode layer (TX sensor coil group 100) is crimped to the connector terminals of an FPC (not shown), and is connected to the pins of the controller corresponding to each terminal via the FPC, and is driven as a TX sensor coil by the controller.

[0278] <Function and Effect>

[0279] As described above, the position detection device 3 of the present embodiment is a stacked structure including a flexible display that can be bent, and the display 300G is a so-called in-cell mutual capacitance type touch sensor TS1. The in-cell mutual capacitance type TS1 is provided in a layer above the display front panel layer 301, and the RX electrode layer (RX sensor coil group 200) is integrally provided.

[0280] That is, the position detection device 3 of the present embodiment is configured to dispose the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) in separate different layers.

[0281] In addition, the TX electrode layer (TX sensor coil group 100) is formed on the lower surface side of the mounted support plate 400 with respect to the pen.

[0282] Therefore, it is possible to maintain the performance as a position detection device without impairing the visibility of the display 300G, and to make the stacked structure thin and improve the designability.

[0283] In addition, the TX electrode layer (TX sensor coil group 100) is formed on the lower surface side of the mounted support plate 400 with respect to the pen, and has a structure in which the connector terminals on the FPC side are crimped to the TX electrode layer (TX sensor coil group 100) and connected to the controller via the FPC.

[0284] In other words, since the upper surface of the support plate 400 with respect to the pen remains flat, even if the display 300G is adhered to the upper part of the support plate 400 with an adhesive or the like, it does not affect the flatness and inclination of the display 300G.

[0285] <Fifth Embodiment>

[0286] Using FIG. 18, Figure 19 , the position detection device 4 of the present embodiment will be described.

[0287] Note that the structure of the RX electrode layer (RX sensor coil group 200) is the same as that of the first to fourth embodiments, and thus its detailed description is omitted.

[0288] <Stacked structure 1 of position detection device 4>

[0289] Figure 18A A stacked structure including a flexible display in which a support plate is divided is shown.

[0290] Similar to the fourth embodiment, the display 300G is a so-called in-cell mutual capacitance type touch sensor TS1, and in the layer above the front panel layer 301 of the display, an in-cell mutual capacitance type touch sensor TS1 is provided, and an RX electrode layer (RX sensor coil group 200) is integrally provided.

[0291] That is, Figure 18A The shown stacked structure 1 of the position detection device 4 is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0292] The TX electrode layer (TX sensor coil group 100) is formed on the lower surface side of the mounted support plates 400-1 and 400-2 with respect to the pen.

[0293] In Figure 18A the structure of, the TX electrode layer (TX sensor coil group 100-1) is directly provided on the upper side surface of the first support plate 400-1, and the TX electrode layer (TX sensor coil group 100-2) is directly provided on the upper side surface of the second support plate 400-2.

[0294] Preferably, the support plates 400-1 and 400-2 are rigid substrates such as glass epoxy substrates (FR4, etc.) having rigidity, and the TX electrode layer (TX sensor coil group 100-1) and the TX electrode layer (TX sensor coil group 100-2) are provided by printing a conductive material such as copper, silver, and copper on one surface of the support plate 400 (the upper side surface in Figure 16 A).

[0295] In addition, on the lower surface side of the first support plate 400-1 and the second support plate 400-2, a pad group or a part of the TX sensor coil wiring that is connected to the TX electrode layers (TX sensor coil groups 100-1, TX sensor coil groups 100-2) formed on the upper surface side of the first support plate 400-1 and the second support plate 400-2 through through holes is printed and installed, and is crimped on the connector terminals connected to the flexible substrate.

[0296] In addition, as Figure 16 shown in A, a magnetic shielding plate can also be provided on the lower side of the first support plate 400-1 and the second support plate 400-2 where the TX electrode layer (TX sensor coil group 100-1) or the TX electrode layer (TX sensor coil group 100-2) is installed.

[0297] <Stacked structure 2 of the position detection device 4>

[0298] In Figure 18B the structure, different from Figure 18A the structure, a TX electrode layer (TX sensor coil group 100-1) or a TX electrode layer (TX sensor coil group 100-2) is directly provided on one surface of the lower side surfaces of the separated first support plate 400-1 and second support plate 400-2.

[0299] That is, Figure 18B the stacked structure 2 of the position detection device 4 shown in

[0300] is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0301] As Figure 18B shown, the magnetic shielding plate can be provided below the TX electrode layer (TX sensor coil group 100-1) and the TX electrode layer (TX sensor coil group 100-2).

[0302] <Structure of the TX electrode layer (TX sensor coil group 100)>

[0303] Figure 19 is a diagram showing a configuration example of the TX electrode layer (TX sensor coil groups 100-1 and 100-2).

[0304] Figure 19 The structure of the TX electrode layer (TX sensor coil groups 100, 100-2) shown in Figure 18A , Figure 18BIt is effective in the case of a flexible display that can be bent like the structural example.

[0305] Figure 19 In the structure shown, for example, in Figure 18A or Figure 18B the support plate 400 is separated, and the TX electrode layer is formed on the upper surface side or the lower surface side of the separated support plates 400-1 and 400-2 with respect to the pen.

[0306] Specifically, in the structure of Figure 19 the TX electrode layer (TX sensor coil group 100) is configured to include a first TX electrode layer (TX sensor coil group 100-1) mounted on the support plate 400-1 by printing in Figure 18A or Figure 18B and a second TX electrode layer (TX sensor coil group 100-2) mounted on the support plate 400-2 by printing.

[0307] In addition, for example, as shown in Figure 18B pad groups 140-1 and 140-2 are printed and mounted on the lower surface side of the support plate 400-2 and are crimped to the connector terminals connected to the flexible substrate.

[0308] Furthermore, a bending portion 400-3 as a flexible member or structure can be provided between the support plate 400-1 and the support plate 400-2, and a bending waist connecting conductor 131 made of a material and structure that are less likely to break compared to the connecting conductor 130 as other first connecting portions is provided in this portion.

[0309] As shown in Figure 19 the TX electrode layer (TX sensor coil group 100) includes TX electrodes 120 ··· TX electrodes 135 that respectively constitute TX sensor coils T0, T1, … T15 and a connecting conductor 130 that connects the TX electrodes 120 to TX electrodes 135 to form a comb-shaped (SAW shape).

[0310] As shown in Figure 19 the TX electrodes 120 to 127 are connected to the first pad group 140-1, and the TX electrodes 128 to 135 are connected to the second pad group 140-2.

[0311] The pad group 140 of the TX electrode layer (TX sensor coil group 100) is crimped to the connector terminals of an FPC (not shown), and is connected to the pins of the controller corresponding to each terminal via the FPC, and is driven as a TX sensor coil by the controller.

[0312] <Function and Effect>

[0313] The position detection device 4 of the present embodiment is a stacked structure including a flexible display that can be bent. The display 300G is a so-called in-plane embedded mutual capacitance type touch sensor TS1. The in-plane embedded mutual capacitance type touch sensor TS1 is provided in a layer above the display front panel layer 301, and the RX electrode layer (RX sensor coil group 200) is integrally provided.

[0314] On the other hand, the TX electrode layer (TX sensor coil group 100-1) or the TX electrode layer (TX sensor coil group 100-2) is directly provided on one surface of the lower sides of the separated first support plate 400-1 and second support plate 400-2.

[0315] That is, the stacked structure 2 of the position detection device 4 is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0316] Therefore, it is possible to maintain the performance as a position detection device without impairing the visibility of the display 300G, and to make the stacked structure thin and improve the designability.

[0317] In addition, the TX electrode layer (TX sensor coil groups 100-1, 100-2) is formed on the lower surface side of the mounted first support plate 400-1 and second support plate 400-2 with respect to the pen.

[0318] In addition, pad groups 140-1 and 140-2 are printed and mounted on the lower surface side of the support plate 400-2 and are crimped to the connector terminals connected to the flexible substrate.

[0319] Therefore, the upper surfaces of the first support plate 400-1 and the second support plate 400-2 are configured to maintain flatness as much as possible, and are configured such that even if the display 300G is bonded to the upper parts of the first support plate 400-1 and the second support plate 400-2 by an adhesive or the like, it is not easy to affect the flatness and inclination of the display 300G.

[0320] The position detection device 3 of the present embodiment is a stacked structure including a flexible display that can be bent. The display 300J is a so-called in-plane embedded mutual capacitance type touch sensor TS1. The in-plane embedded mutual capacitance type touch sensor TS1 is provided in a layer above the display front panel layer 301, and the RX electrode layer (RX sensor coil group 200) is provided.

[0321] On the other hand, the TX electrode layer (TX sensor coil group 100-1) or the TX electrode layer (TX sensor coil group 100-2) is directly provided on one surface of the lower sides of the separated first support plate 400-1 and second support plate 400-2.

[0322] That is, the stacked structure 3 of the position detection device 3 is a structure in which the TX electrode layer (TX sensor coil group 100) and the RX electrode layer (RX sensor coil group 200) are provided on separate different layers.

[0323] In addition, on the TX electrode layer (TX sensor coil group 100-1) and the TX electrode layer (TX sensor coil group 100-2), the connector terminals on the FPC side are crimped and connected to the controller via the FPC.

[0324] Therefore, it is possible to maintain the performance as a position detection device without impairing the visibility of the display 300J, and to make the stacked structure thin and improve the designability.

[0325] In addition, it becomes the following structure: the TX electrode layer (TX sensor coil group 100-1, TX sensor coil group 100-2) is formed on the lower surface side of the first support plate 400-1 and the second support plate 400-2 to be installed, with respect to the pen. The connector terminals on the FPC side are crimped to the TX electrode layer (TX sensor coil group 100-1, TX sensor coil group 100-2) and connected to the controller via the FPC.

[0326] In other words, the upper surface with respect to the pen of the first support plate 400-1 and the second support plate 400-2 remains flat. Therefore, even if the display 300J is bonded on the upper part of the first support plate 400-1 and the second support plate 400-2 by an adhesive or the like, it will not affect the flatness and inclination of the display 300J.

[0327] In the position detection device 3 of the present embodiment, the support plate 400 of the TX electrode layer (TX sensor coil group 100) is separated, and the TX electrode layer is formed on the upper surface side or the lower surface side of the separated support plates 400-1 and 400-2 with respect to the pen.

[0328] Specifically, the TX electrode layer (TX sensor coil group 100) has Figure 19 a structure configured to include a first TX electrode layer (TX sensor coil group 100-1) installed on the support plate 400-1 by printing and Figure 18A and Figure 18B a second TX electrode layer (TX sensor coil group 100-2) installed on the support plate 400-2 by printing.

[0329] In addition, the TX electrode layer (TX sensor coil group 100) of the position detection device 3 of the present embodiment includes TX electrodes 120 to TX electrodes 135 that respectively form TX sensor coils T0, T1, … T15, and a connection conductor 130 that is a second connection portion for connecting the TX electrodes 120 to TX electrodes 135 to each other, and is configured in a comb shape (SAW shape).

[0330] That is, in the TX electrode layer (TX sensor coil group 100) of the position detection device 3 of the present embodiment, by controlling the switch 11, for example, the TX electrode 125 and the TX electrode 126 are bundled and connected to the TX terminal of the TX circuit 10, and the TX electrode 128 and the TX electrode 129 are bundled and connected to the TX_inv terminal of the TX circuit 10.

[0331] In addition, the TX circuit 10 controls the TX terminal and the TX_inv terminal so that the change amounts of the currents are in opposite phases. Between the bundle of the TX electrode 125 and the TX electrode 126 and the bundle of the TX electrode 128 and the TX electrode 129 (near the TX electrode 127), compared with the case where they are not bundled, and compared with the case where the TX_inv is set to a fixed potential, a stronger transmitted magnetic field can be formed.

[0332] In other words, by bundling a plurality of TX electrodes, even if the TX electrode layer (TX sensor coil group 100) is formed by TX electrodes with a narrow line width and a large impedance, a transmitted magnetic field with a desired intensity can be formed.

[0333] <Modification Example 1>

[0334] In the first embodiment, the sensor 1 in which the RX electrode layer (RX sensor coil group 200) is integrated into the in-cell mutual capacitance type touch sensor TS1 is shown. However, the first sensor electrode (TX electrode for touch panel) 210 can also be used as the TX electrode layer (TX sensor coil group 100) for performing pen detection based on the electromagnetic induction method when performing pen detection based on the electromagnetic induction method. Thus, substantially as a sensor in which the RX electrode layer (RX sensor coil group 200) is integrated into the in-cell mutual capacitance type touch sensor TS1, the RX electrode layer (RX sensor coil group 200) is formed on another layer.

[0335] <Modification Example 2>

[0336] In the above-described embodiments, for the sake of easy understanding of the description, the TX electrode is described as the electrode for sending out the magnetic field, and the RX electrode is described as the electrode for detecting the pen signal, with their functions uniquely determined. However, the TX electrode can also operate as the RX electrode for detecting the pen signal on an axis (e.g., the Y-axis) different from the arrangement axis (e.g., the X-axis) of the RX electrode for detecting the pen signal after operating as the TX electrode for sending out the magnetic field in a time-division manner.

[0337] Alternatively, the TX electrode in the above-described embodiments can be replaced with the first electrode arranged in parallel in the first direction, and the RX electrode can be replaced with the second electrode arranged in parallel in the second direction.

[0338] In addition, by recording the processing of the TX circuit 10 etc. on a recording medium readable by a computer system and causing the TX circuit 10 etc. to read and execute the program recorded on this recording medium, the sensors 1, 1A and the position detection devices 2 to 4 of the present invention can be realized. The computer system mentioned here includes hardware such as an OS and peripheral devices.

[0339] In addition, if the "computer system" is a case using the WWW (World Wide Web) system, it also includes a homepage providing environment (or display environment). In addition, the above program can also be transmitted from a computer system storing the program in a storage device etc. to other computer systems via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information such as a network (communication network) like the Internet or a communication line (communication wire) like a telephone line.

[0340] In addition, the above program can also be used to implement a part of the above functions. Furthermore, it can also be a so-called differential file (differential program) that can implement the above functions through combination with a program already recorded in a computer system.

[0341] As described above, the embodiments of the present invention have been described in detail with reference to the drawings, but the specific structure is not limited to this embodiment and also includes designs etc. within the scope not departing from the gist of the present invention.

[0342] [Description of Reference Numerals]

[0343] 1: Sensor

[0344] 1A: Sensor

[0345] 2: Position Detector

[0346] 3: Position Detector

[0347] 4: Position Detector

[0348] 10: TX Circuit

[0349] 11: Switch

[0350] 12: Switch

[0351] 20: RX Circuit

[0352] 100: TX Electrode Layer (TX Sensor Coil Group)

[0353] 100A: TX Electrode Layer (TX Sensor Coil Group)

[0354] 100 - 1; First TX Electrode Layer

[0355] 100 - 2: Second TX Electrode Layer

[0356] 120: TX Electrode

[0357] 121: TX Electrode

[0358] 125: TX Electrode

[0359] 126: TX Electrode

[0360] 127: TX Electrode

[0361] 128: TX Electrode

[0362] 129: TX Electrode

[0363] 130: Connecting Conductor

[0364] 135: TX Electrode

[0365] 140: Pad Group

[0366] 140 - 1: First Pad Group

[0367] 140 - 2: Second Pad Group

[0368] 200: RX Electrode Layer (RX Sensor Coil Group)

[0369] 300: Display

[0370] 300B: Display

[0371] 300C: Display

[0372] 300D; Display

[0373] 300E: Display

[0374] 300F: Display

[0375] 300G: Display

[0376] 300J: Display

[0377] 300K: Monitor

[0378] 300L: Monitor

[0379] AA: Active area.

Claims

1. A sensor, comprising: A surface-embedded mutual capacitance type touch sensor; And An RX electrode layer, wherein a plurality of RX electrodes are provided in the RX electrode layer, and the RX electrodes detect a pen alternating magnetic field generated by a pen that has accumulated energy through an alternating magnetic field from a TX electrode layer provided with TX electrodes. The TX electrodes use electromagnetic induction to generate the alternating magnetic field for detecting the position of the pen, The RX electrode layer is surrounded by touch electrodes, and the touch electrodes are formed by a grid electrode pattern provided on a surface-embedded touch layer of the surface-embedded mutual capacitance type touch sensor. Adjacent floating patterns in the extending direction of the RX electrodes are combined with each other through jump wiring, and the RX electrode wiring is formed in a straight line shape.

2. The sensor according to claim 1, One end of the RX electrode wiring formed in the straight line shape is connected to a circuit portion that receives a pen signal as a response alternating magnetic field and obtains the level of the pen signal, and the terminal of the RX electrode wiring is connected to a jumper wire.

3. The sensor according to claim 1, The surface-embedded mutual capacitance type touch sensor includes a transmitting electric field generation portion for a touch sensor, The TX electrode layer shares the transmitting electric field generation portion for the touch sensor.

4. A sensor, comprising: A surface-embedded mutual capacitance type touch sensor; and An electromagnetic induction type sensor, A first electrode group constituting the surface-embedded mutual capacitance type touch sensor and a second electrode group constituting the electromagnetic induction type sensor are composed of three or less layers including a layer in which at least a part of the first electrode group and a part of the second electrode group are mixed and arranged.

5. The sensor according to claim 4, Composed of at least a first layer, a second layer, and a third layer, The first layer is provided with the first electrode group constituting the surface-embedded mutual capacitance type touch sensor, The second layer is provided with auxiliary wiring connecting between a part of the electrode groups of the first electrode group and a part of the electrode groups of the second electrode group constituting the electromagnetic induction type sensor, The third layer is provided with another part of the electrode groups of the second electrode group constituting the electromagnetic induction type sensor.

6. The sensor according to claim 5, The auxiliary wiring includes jump wiring or bridge wiring.

7. The sensor according to claim 4, Composed of a shared layer and a mixed presence layer, The shared layer shares an electrode group extending in a first direction of the surface-embedded mutual capacitance type touch sensor and a part of the electrode groups of the second electrode group that generates an alternating magnetic field for detecting the position of the pen in the electromagnetic induction type sensor, The mixed presence layer is formed by connecting, via auxiliary wiring, another part of the electrode groups of the second electrode group that detects a pen alternating magnetic field generated by a pen that has accumulated energy through the alternating magnetic field from a part of the electrode groups of the second electrode group and an electrode group extending in a second direction intersecting the first direction of the surface-embedded mutual capacitance type touch sensor.

8. The sensor according to claim 7, The auxiliary wiring includes jump wiring or bridge wiring.

9. The sensor according to claim 8, The shape of the coil group formed by connecting another part of the electrode groups in the second electrode group through the auxiliary wiring is comb-shaped.

10. The sensor according to claim 9, The sensor electrodes of the inlaid mutual capacitance type touch sensor include a floating pattern and a peripheral portion surrounding the floating pattern from the outside, including a linear coil group of the floating pattern and the auxiliary wiring from the open end side of the comb-shaped coil group toward the terminal side, which is arranged in a non-overlapping manner with a linear coil group of the peripheral portion and the auxiliary wiring of the inlaid mutual capacitance type touch sensor extending in a second direction intersecting the first direction when viewed from above.

11. The sensor according to claim 10, The peripheral portions of the sensor electrodes adjacent to each other in the first direction are connected to each other through a plurality of wirings or a connecting portion formed by a wide-width wiring, and the floating patterns of the sensor electrodes adjacent to each other in the extending direction of another part of the electrode groups in the second electrode group are connected to each other through a plurality of the auxiliary wirings.

12. The sensor according to claim 11, A plurality of wirings are attached to the floating pattern or the peripheral portion of the floating pattern in the sensor electrode.

13. A position detection device is a position detection device that uses electromagnetic induction to detect the position of a pen, wherein, including, a TX electrode layer provided with a TX electrode that generates an alternating magnetic field; an RX electrode layer, the RX electrode layer being provided with a plurality of RX electrodes, and the RX electrodes detecting a pen alternating magnetic field generated by a pen that has accumulated energy through the alternating magnetic field; an inlaid mutual capacitance type touch sensor; and a display, controlling display pixels and the lighting / extinguishing of the display pixels, the RX electrode layer is surrounded by touch electrodes, the touch electrodes are formed by a grid electrode pattern provided on an inlaid touch layer of the inlaid mutual capacitance type touch sensor, and adjacent floating patterns in the extending direction of the RX electrodes are combined with each other through jump wiring, so that the RX electrodes are formed in a linear shape.

14. The position detection device according to claim 13, further including a support plate, the support plate is provided on the lower side farther from the pen than the display, and the TX electrode layer is formed on at least one surface of the support plate.

15. The position detection device according to claim 14, The TX electrode layer is formed in a comb shape.

16. The position detection device according to claim 15, including a connecting portion connecting one end of the TX electrode of the TX electrode layer.

17. The position detection device according to claim 14 or 16, The TX electrode layer is formed on the lower surface side of the support plate with respect to the pen.

18. The position detection device according to claim 17, A pad group or a part of the TX sensor coil wiring is formed on the lower surface side of the support plate and is crimped to a connector terminal connected to a flexible substrate.

19. The position detection device according to claim 14 or 16, The support plate is separated, the TX electrode layer is formed on the upper surface side of the separated support plate with respect to the pen, and a pad group or a part of the TX sensor coil wiring is formed on the lower surface side of the separated support plate.

20. The position detection device according to claim 19, The pad group is connected to the TX electrode layer formed on the upper surface side of the separated support plate via a through hole on the lower surface side of the support plate, and is crimped to the connector terminal connected to the flexible substrate.

21. The position detection device according to claim 14 or 16, The support plate is separated, and the TX electrode layer is formed on the lower surface side of the separated support plate with respect to the pen.

22. The position detection device according to claim 13, Outside the active region, there is a connection portion that is not a grid structure and connects one end of the RX electrode formed in the linear shape.

Images