Position detection device and sensor

Abstract

To provide a position detection device configured to reduce the thickness of a structure including an EMR sensor.SOLUTION: A position detection device detects a capacitive touch input on a panel surface and an electromagnetic-induction pen input, the device including: a display image generation layer which generates a display image according to the control by a drive circuit; and an integrated sensor layer arranged between the panel surface and the display image generation layer. The integrated sensor layer includes a plurality of first electrodes arranged in a first direction, a plurality of second electrodes arranged in a second direction that intersects with the first direction, and a plurality of third electrodes arranged in the second direction and different from the second electrodes. The position detection device is configured to detect the touch input using the first and second electrodes, and detect the pen input using the first and third electrodes.SELECTED DRAWING: Figure 24

Description

[Technical Field]

[0001] The present invention relates to a position detection device and sensor, and more particularly to a position detection device and sensor that detects the position of a pen using an electromagnetic induction (EMR) method. [Background technology]

[0002] The EMR method is known as one method for detecting the position of an electromagnetic induction pen on the panel surface of a tablet device or the like. An EMR position detection device has an EMR sensor that includes X coils arranged in the X direction and Y coils arranged in the Y direction, and is configured to derive the position of the electromagnetic induction pen by the electromagnetic induction action between the EMR sensor and the electromagnetic induction pen. Patent Document 1 discloses an example of an EMR sensor. As disclosed in these documents, the EMR sensor is generally placed on the lower side of the display (the side farther from the panel surface). In addition, a touch sensor for detecting the position of a finger on the panel surface is placed on the upper side of the display (the side closer to the panel surface).

[0003] Furthermore, foldable displays have emerged in recent years. Examples of foldable displays are disclosed in Patent Documents 2 and 3. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2021-033543 [Patent Document 2] U.S. Patent Application Publication No. 2023-0071229 [Patent Document 3] U.S. Patent Application Publication No. 2021-0208709 [Overview of the project] [Problems that the invention aims to solve]

[0005] Incidentally, in conventional EMR sensors, both the X-coil and Y-coil have overlapping wiring sections between adjacent coils. In other words, both the X-coil and Y-coil have a multi-layered structure, which increases the thickness of the structure including the EMR sensor and display, and therefore improvement was needed.

[0006] Therefore, another object of the present invention is to provide a position detection device and sensor that can achieve a thinner structure including an EMR sensor. [Means for solving the problem]

[0007] A position detection device according to a first aspect of the present invention is a position detection device for detecting the positions of a pen and a finger on a panel surface, comprising: a display image generation layer that generates a display image according to control by a drive circuit; and an integrated sensor layer disposed between the panel surface and the display image generation layer, wherein the integrated sensor layer includes a touch sensor for detecting the position of a finger on the panel surface by a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, wherein the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, wherein the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, and at least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils, thus forming a position detection device.

[0008] A position detection device according to a second aspect of the present invention is a position detection device for detecting the positions of a pen and a finger on a panel surface, comprising: a display image generation layer that generates a display image according to control by a drive circuit; and an integrated sensor layer disposed between the panel surface and the display image generation layer, wherein the integrated sensor layer includes a touch sensor for detecting the position of a finger on the panel surface by a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, wherein the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, wherein the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, wherein the plurality of second coils are composed of comb-shaped coils having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction.

[0009] A position detection device according to a third aspect of the present invention is a position detection device for detecting the position of a pen on a panel surface by electromagnetic induction, and includes a plurality of first electrodes arranged in a grid pattern, each having a hollow portion; a plurality of second electrodes disposed within the hollow portion of each of the plurality of first mesh electrodes; and a plurality of first connecting wires formed in layers different from the plurality of first electrodes and the plurality of second electrodes, which connect two adjacent second electrodes in the first direction to each other, thereby constituting a plurality of first wirings extending in the first direction, wherein the plurality of first wirings constitute a receiving coil of an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction.

[0010] A sensor according to a first aspect of the present invention is a sensor used in conjunction with electronic equipment for detecting the positions of a pen and a finger on a panel surface, wherein the electronic equipment includes a display image generation layer that generates a display image according to control by a drive circuit, and the sensor is disposed between the panel surface and the display image generation layer and includes a touch sensor for detecting the position of a finger on the panel surface by a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, wherein the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, and the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, wherein at least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils.

[0011] A sensor according to the first aspect of the present invention is a sensor used in conjunction with electronic equipment for detecting the position of a pen and a finger on a panel surface, wherein the sensor includes a touch sensor for detecting the position of a finger on the panel surface by capacitance and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, and at least a portion of each of the plurality of second electrodes may be formed in the same layer as the plurality of first coils or the plurality of second coils.

[0012] A sensor according to a second aspect of the present invention is a sensor used in conjunction with an electronic device for detecting the positions of a pen and a finger on a panel surface, wherein the electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, and the sensor is disposed between the panel surface and the display image generation layer and includes a touch sensor for detecting the position of a finger on the panel surface by a capacitive method and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, wherein the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, and the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, wherein the plurality of second coils are composed of comb-shaped coils having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction.

[0013] A sensor according to a second aspect of the present invention is a sensor used in conjunction with electronic equipment for detecting the positions of a pen and a finger on a panel surface, wherein the sensor includes a touch sensor for detecting the position of a finger on the panel surface by capacitance and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, the touch sensor includes a plurality of first electrodes arranged in a first direction and a plurality of second electrodes arranged in a second direction intersecting the first direction, and the EMR sensor includes a plurality of first coils arranged in a first direction and a plurality of second coils arranged in a second direction, the plurality of second coils may be composed of comb-shaped coils having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction.

[0014] The sensor according to the third aspect of the present invention is a sensor used together with an electronic device that detects the position of a pen on a panel surface by electromagnetic induction, and includes a plurality of first electrodes each having a hollow portion and arranged in a grid pattern, a plurality of second electrodes arranged in the hollow portions of the plurality of first mesh electrodes, and a plurality of first connection wirings formed in a layer different from the plurality of first electrodes and the plurality of second electrodes, and configured to form a plurality of first wirings extending in the first direction by connecting two adjacent second electrodes in the first direction. The plurality of first wirings constitute a receiving coil of an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction.

Advantages of the Invention

[0015] According to the first to third aspects of the present invention, it is possible to provide a position detection device and a sensor that can realize thinning of a structure including an EMR sensor.

Brief Description of the Drawings

[0016] [Figure 1] It is a diagram showing the configuration of a position detection system 1 according to the first embodiment of the present invention. [Figure 2] It is a diagram for explaining the principle of deriving the position of the electromagnetic induction pen 2. [Figure 3] It is a diagram for explaining the principle of deriving the position of the electromagnetic induction pen 2. [Figure 4] It is a diagram for explaining the principle of deriving the position of the electromagnetic induction pen 2. [Figure 5] It is a diagram showing the layer structure of the structure 33 shown in FIG. 1. [Figure 6] It is a diagram showing the planar configuration of the Tx electrode layer 42T shown in FIG. 5. [Figure 7] It is a diagram showing the electrical configuration of the Tx electrode layer 42T shown in FIG. 5. [Figure 8] It is a diagram showing the planar configuration and electrical configuration of the Rx electrode layer 42R shown in FIG. 5. [Figure 9]This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a first modification of the first embodiment of the present invention. [Figure 10] This figure shows the planar configuration of the Tx electrode layer 42T shown in Figure 9. [Figure 11] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a second modification of the first embodiment of the present invention. [Figure 12] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a third modification of the first embodiment of the present invention. [Figure 13] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a fourth modification of the first embodiment of the present invention. [Figure 14] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a fifth modification of the first embodiment of the present invention. [Figure 15] This figure shows the layered structure of the structure 33 included in the position detection device 3 according to the second embodiment of the present invention. [Figure 16] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a first modification of the second embodiment of the present invention. [Figure 17] (a) is a diagram showing the upper surface of the support plate 45 included in the position detection device 3 according to a second modification of the second embodiment of the present invention, and Figure 17(b) is a diagram showing the lower surface of the support plate 45 included in the position detection device 3 according to a second modification of the second embodiment of the present invention. [Figure 18] This figure shows the layered structure of the structure 33 included in the position detection device 3 according to the third embodiment of the present invention. [Figure 19] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a first modification of the third embodiment of the present invention. [Figure 20] This figure shows the layered structure of a structure 33 included in a position detection device 3 according to a second modification of the third embodiment of the present invention. [Figure 21]This figure shows the layered structure of the structure 33 included in the position detection device 3 according to the fourth embodiment of the present invention. [Figure 22] This figure shows the planar configuration of the integrated sensor 47 shown in Figure 21. [Figure 23] This figure shows the planar configuration of the integrated sensor 47 shown in Figure 21. [Figure 24] This figure shows the planar configuration of the integrated sensor 47 shown in Figure 21. [Figure 25] This figure shows the electrical configuration of the integrated sensor 47 shown in Figure 21. [Figure 26] This figure shows the electrical configuration of the integrated sensor 47 shown in Figure 21. [Figure 27] This figure shows the layer structure of a structure 33 included in a position detection device 3 according to a first modification of the fourth embodiment of the present invention. [Figure 28] This figure shows the planar configuration of the integrated sensor 47 according to a second modified example of the fourth embodiment of the present invention. [Modes for carrying out the invention]

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0018] Figure 1 shows the configuration of a position detection system 1 according to a first embodiment of the present invention. As shown in the figure, the position detection system 1 is composed of an electromagnetic induction pen 2 and a position detection device 3. The electromagnetic induction pen 2 is a pen that corresponds to position detection using the EMR method and is configured to have a resonant circuit including a coil and a capacitor inside. The EMR method is a method that derives the position of the electromagnetic induction pen 2 by the electromagnetic induction action between the EMR sensor 42 and the electromagnetic induction pen 2, which will be described later, and includes both a system in which alternating magnetic fields are exchanged bidirectionally between the EMR sensor 42 and the electromagnetic induction pen 2, and a system in which an alternating magnetic field is sent in one direction from the electromagnetic induction pen 2 to the EMR sensor 42. In this embodiment, we will continue the explanation by taking up an example in which alternating magnetic fields are exchanged bidirectionally between the EMR sensor 42 and the electromagnetic induction pen 2.

[0019] The position detection device 3 is a computer (electronic device) that supports pen input using the EMR method and touch input using the capacitive method, and is composed of a switch circuit 30, a sensor controller 31, a host processor 32, and a structure 33. The structure 33 is composed of a cover film 40, a touch sensor 41, an EMR sensor 42, and a display 43. Note that the arrangement of the cover film 40, touch sensor 41, EMR sensor 42, and display 43 shown in Figure 1 is for convenience only, and their actual arrangement will be explained later with reference to Figure 5. In a typical example, the position detection device 3 is a tablet terminal or notebook computer that supports pen input and touch input.

[0020] Focusing on the structure 33, the cover film 40 is a film-like member for protecting the internal structure of the structure 33, and is made of, for example, polyethylene terephthalate. The reason why a cover glass, as shown in Figure 18 (described later), is not used as a member for protecting the internal structure of the structure 33 is to enable folding along the illustrated folding axis BA. The structure 33 is configured to be foldable along the folding axis BA, and therefore the display 43 is a foldable display. The type of display method for the display 43 is not particularly limited, but it may be a liquid crystal display or an organic EL display.

[0021] The surface of the cover film 40 is flat and constitutes a panel surface 3a that serves as both the touch surface for the touch sensor 41 and the EMR sensor 42, and the display surface for the display 43. The user of the position detection device 3 performs pen input by sliding the tip of the electromagnetic induction pen 2 on this panel surface 3a, and touch input by sliding their finger on it.

[0022] The touch sensor 41 is a sensor that includes multiple Tx electrodes, each being a linear electrode extending in the x direction and positioned side by side in the y direction, and multiple Rx electrodes, each being a linear electrode extending in the y direction and positioned side by side in the x direction. Each of the multiple Tx electrodes and each of the multiple Rx electrodes is connected to the sensor controller 31 via a switch circuit 30. The EMR sensor 42 is a sensor that includes multiple Tx coils and multiple Rx coils. As will be described in more detail later with reference to Figures 6 to 8, in this embodiment, the multiple Tx coils are composed of a single comb-shaped coil (Tx electrode), and the multiple Rx coils are shared with the multiple Rx electrodes of the touch sensor 41. Each of the multiple Tx coils and each of the multiple Rx coils is connected to the sensor controller 31 via a switch circuit 30.

[0023] The switch circuit 30 is an integrated circuit that includes a group of switches provided between the sensor controller 31 and each electrode (including the coil) in the touch sensor 41 and the EMR sensor 42. The switching of the group of switches constituting the switch circuit 30 is performed by the sensor controller 31. Details of the switch circuit 30 will be explained later with reference to Figures 7 and 8.

[0024] The sensor controller 31 is an integrated circuit that has the function of determining the position of a finger on the panel surface 3a using a touch sensor 41 and the function of determining the position of the electromagnetic induction pen 2 on the panel surface 3a using an EMR sensor 42. The sensor controller 31 is also configured to receive data transmitted by the electromagnetic induction pen 2. The position determined by the sensor controller 31 and the received data are sequentially supplied to the host processor 32.

[0025] To briefly explain the processing performed by the sensor controller 31, first, regarding the position of the finger, the sensor controller 31 transmits a predetermined touch detection signal from each of the multiple Tx electrodes and receives it at each of the multiple Rx electrodes, thereby obtaining the intensity of the received touch detection signal at each intersection of the multiple Rx electrodes and the multiple Tx electrodes. Then, based on the distribution of the acquired intensity, the sensor controller 31 derives the position of the finger within the panel surface 3a.

[0026] Next, regarding the position of the electromagnetic induction pen 2, the sensor controller 31 sequentially supplies alternating current to multiple Tx coils. When the Tx coils to which alternating current is supplied emit an alternating magnetic field, an electromotive force is generated at both ends of the coils that constitute the resonant circuit of the electromagnetic induction pen 2 when they enter this alternating magnetic field, and the capacitors that constitute the resonant circuit together with the coils are charged. After that, when the sensor controller 31 stops supplying the alternating current, the power stored in the capacitors causes the coils of the electromagnetic induction pen 2 to emit an alternating magnetic field (hereinafter referred to as the "pen alternating magnetic field"). The sensor controller 31 receives the signals (hereinafter referred to as the "pen signals") generated in each Rx coil by this pen alternating magnetic field and obtains their intensity to derive the position of the electromagnetic induction pen 2 within the panel surface 3a. This process will be explained in more detail later with reference to Figures 2 to 4.

[0027] Finally, regarding the data transmitted by the electromagnetic induction pen 2, the data to be transmitted may include a pressure value indicating the pressure applied to the pen tip, on / off information indicating the state of a switch on the surface of the casing, and a pen ID stored in the built-in memory. The electromagnetic induction pen 2 is configured such that the resonant frequency of the resonant circuit changes according to the content of this data, and when the resonant frequency of the resonant circuit changes, the frequency of the pen signal received by the sensor controller 31 also changes. The sensor controller 31 detects this change in frequency by demodulating the received pen signal and thereby receives the data transmitted by the electromagnetic induction pen 2.

[0028] The host processor 32 is the central processing unit of the position detection device 3 and is responsible for executing the operating system and various applications of the position detection device 3 by executing a program read from a memory (not shown). The processes that the host processor 32 executes according to the program include generating video signals and supplying them to the display 43, and various processes performed using position and data supplied from the sensor controller 31. The various processes performed using position and data include, for example, moving a cursor displayed on the display surface and generating stroke data that shows the trajectory of the electromagnetic induction pen 2 within the touch surface. Regarding the stroke data, the host processor 32 also performs processes such as rendering and displaying the generated stroke data, generating and recording digital ink containing the generated stroke data, and transmitting the generated digital ink to an external device according to user instructions.

[0029] Figures 2 to 4 are diagrams illustrating the principle of position derivation for the electromagnetic induction pen 2. These are diagrams illustrating the principle and do not necessarily correspond to the configuration of the switch circuit 30, sensor controller 31, and EMR sensor 42 in this embodiment. The principle of position derivation for the electromagnetic induction pen 2 will be explained in detail below, with reference to these figures.

[0030] Here, the multiple loop coils LCx shown in Figures 2 to 4 are coils that extend in the y direction and are arranged side by side in the x direction, and the multiple loop coils LCy are coils that extend in the x direction and are arranged side by side in the y direction. In the example in Figure 2, the loop coils LCx and LCy correspond to both the Rx coil and the Tx coil described above, respectively. On the other hand, in the examples in Figures 3 and 4, the loop coil LCx corresponds to the Rx coil, and the loop coil LCy corresponds to the Tx coil. Note that for simplicity of explanation, only five loop coils LCx and LCy are shown in each figure, but the actual EMR sensor 42 usually has more loop coils LCx and LCy. Also, in each figure, the position of the active area A, which is the display area (the area where the display image is shown) of the display 43, is indicated by a dashed line.

[0031] First, referring to Figure 2, the switch circuit 30 in this example is configured to have switches 50 to 53, and the sensor controller 31 is configured to have a Y-axis circuit 62 and an X-axis circuit 63.

[0032] Switch 50 is a multi-throw single-pole switch that includes a number of selection terminals connected to one end of each loop coil LCy, and a common terminal connected to the common terminal of switch 52. The other end of each loop coil LCy is grounded. Switch 52 is a double-throw single-pole switch that includes a selection terminal connected to the output terminal of the Y-axis circuit 62 via a buffer, a selection terminal connected to the input terminal of the Y-axis circuit 62 via a buffer, and a common terminal connected to the common terminal of switch 50.

[0033] Furthermore, switch 51 is a multi-throw single-pole switch that includes multiple selection terminals connected to one end of each loop coil LCx and a common terminal connected to the common terminal of switch 53. The other end of each loop coil LCx is grounded. Switch 53 is a double-throw single-pole switch that includes a selection terminal connected to the output terminal of the X-axis circuit 63 via a buffer, a selection terminal connected to the input terminal of the X-axis circuit 63 via a buffer, and a common terminal connected to the common terminal of switch 51.

[0034] In the example shown in Figure 2, the sensor controller 31 first switches switch 52 to the input terminal of the Y-axis circuit 62, switch 53 to the output terminal of the X-axis circuit 63, and switch 51 to one of the loop coils LCx, as shown in the figure. Next, the sensor controller 31 starts outputting alternating current from the X-axis circuit 63. As a result, an alternating magnetic field is emitted from the loop coil LCx connected to the X-axis circuit 63, and the loop coil LCx functions as a Tx coil. After a predetermined time has elapsed since the start of output, the sensor controller 31 stops outputting the alternating current and controls switch 50 so that one of the loop coils LCy is connected to the input terminal of the Y-axis circuit 62. Then, in that state, it acquires the strength of the pen signal (strength of the pen alternating magnetic field) input to the Y-axis circuit 62. As a result, the loop coil LCy connected to the Y-axis circuit 62 functions as an Rx coil. The sensor controller 31 acquires the strength of the pen signal for each loop coil LCy by performing the above series of processes from outputting the alternating current to acquiring the strength of the pen signal for each loop coil LCy. The table shown next to the Y-axis circuit 62 in Figure 2 shows an example of the intensity of the pen signal acquired in this way. The sensor controller 31 derives the Y coordinate of the electromagnetic induction pen 2 based on the acquired intensity distribution in the Y direction.

[0035] Next, the sensor controller 31 swaps X and Y and performs the same processing as above. That is, it switches switch 53 to the input terminal side of the X-axis circuit 63, switch 52 to the output terminal side of the Y-axis circuit 62, and switch 50 to one of the loop coils LCy. Then the sensor controller 31 starts outputting AC current from the Y-axis circuit 62, and after a predetermined time has elapsed since the start of output, it stops outputting AC current and controls switch 51 so that one of the loop coils LCx is connected to the input terminal of the X-axis circuit 63. Then, it acquires the strength of the pen signal input to the X-axis circuit 63 in that state. The sensor controller 31 acquires the strength of the pen signal for each loop coil LCx by performing the above series of processes from outputting AC current to acquiring the strength of the pen signal for each loop coil LCx. The table shown next to the X-axis circuit 63 in Figure 2 shows an example of the pen signal strength acquired in this way. Based on the acquired strength distribution in the X direction, the sensor controller 31 derives the X coordinate of the electromagnetic induction pen 2.

[0036] As described above, the sensor controller 31 in the example shown in Figure 2 individually determines the X and Y coordinates based on the distributions in the X and Y directions, respectively. Then, by combining the two obtained coordinates, it is configured to derive the position of the electromagnetic induction pen 2.

[0037] Next, referring to Figure 3, this example differs from the example shown in Figure 2 in that the switch circuit 30 does not have switches 52 and 53, and the sensor controller 31 has a Tx circuit 60 and an Rx circuit 61 instead of a Y-axis circuit 62 and an X-axis circuit 63.

[0038] Switch 50 is the same as switch 50 in the example in Figure 2, except that its common terminal is connected to the output terminal of the Tx circuit 60 via a buffer. Switch 51 is also the same as switch 51 in the example in Figure 2, except that its common terminal is connected to the input terminal of the Rx circuit 61 via a buffer. The other ends of each loop coil LCy and each loop coil LCx are grounded, as in the example in Figure 2.

[0039] In the example shown in Figure 3, the sensor controller 31 starts outputting AC current from the Tx circuit 60 with the switch 50 switched to one of the loop coils LCy. As a result, an alternating magnetic field is emitted from the loop coil LCy connected to the Tx circuit 60, and the loop coil LCy functions as a Tx coil. After a predetermined time has elapsed since the start of output, the sensor controller 31 stops outputting AC current and controls the switch 51 so that one of the loop coils LCy is connected to the Rx circuit 61. Then, it acquires the strength of the pen signal (strength of the pen alternating magnetic field) input to the Rx circuit 61 in that state. As a result, the loop coil LCx connected to the Rx circuit 61 functions as an Rx coil. The sensor controller 31 performs this process for all combinations of loop coils LCy and LCx, thereby acquiring the strength of the pen signal at each intersection of loop coil LCy and loop coil LCx. The table shown next to the Rx circuit 61 in Figure 3 shows an example of the pen signal strength acquired in this way. The sensor controller 31 is configured to derive the position of the electromagnetic induction pen 2 based on the two-dimensional distribution of the intensity of the acquired pen signal.

[0040] Referring to Figure 4, the switch circuit 30 in this example differs from the switch circuit 30 shown in Figure 3 in that it does not have a switch 51. One end of each loop coil LCx is connected to the input terminal of the Rx circuit 61 without going through the switch 51. Although not shown, the Rx circuit 61 in the example of Figure 4 incorporates a number of receiving circuits equal to the number of loop coils LCx.

[0041] The processing performed by the sensor controller 31 in the example shown in Figure 4 is basically the same as that performed by the sensor controller 31 in the example shown in Figure 3, but differs in that, after sending an alternating magnetic field from the loop coil LCy, the intensity of the pen signal input to the Rx circuit 61 via each loop coil LCx is simultaneously acquired. The sensor controller 31 performs this processing for each loop coil LCy, thereby acquiring the intensity of the pen signal (intensity of the pen alternating magnetic field) at each intersection of the loop coil LCy and the loop coil LCx. The table shown next to the Rx circuit 61 in Figure 4 shows an example of the pen signal intensity thus acquired. The sensor controller 31 is configured to derive the position of the electromagnetic induction pen 2 based on the two-dimensional distribution of the acquired pen signal intensity.

[0042] The above explains the principle of deriving the position of the electromagnetic induction pen 2 by illustrating it with three different principles. The position detection device 3 according to this embodiment is configured to derive the position of the electromagnetic induction pen 2 using the principle shown in Figure 4. Next, the layer structure of the structure 33 according to this embodiment will be described.

[0043] Figure 5 shows the layer structure of the structure 33. As shown in the figure, the structure 33 is composed of, in order from the panel surface 3a side, a cover film 40, an Rx electrode layer 42R, a display image generation layer 43a, a backplane 43b, a support plate 45, a Tx electrode layer 42T, an adhesive layer 72, and a magnetic shield 46. The display 43 is composed of the touch sensor 41, the Rx electrode layer 42R, the display image generation layer 43a, and the backplane 43b. The cover film 40 and the Rx electrode layer 42R are bonded together by the adhesive layer 70, the backplane 43b and the support plate 45 are bonded together by the adhesive layer 71, and the support plate 45 and the Tx electrode layer 42T formed on its surface and the magnetic shield 46 are bonded together by the adhesive layer 72.

[0044] The Rx electrode layer 42R is the layer on which the Rx coil of the EMR sensor 42 is arranged, and in this embodiment, it also includes the touch sensor 41. Details of the Rx electrode layer 42R will be explained later with reference to Figure 8.

[0045] The Tx electrode layer 42T is the layer on which the Tx coil of the EMR sensor 42 is disposed. The Tx coil of the EMR sensor 42 is formed by printing a conductive material such as copper or silver onto the lower surface of the support plate 45. Further details of the Tx electrode layer 42T will be described later with reference to Figures 6 and 7.

[0046] The display image generation layer 43a is a layer responsible for generating a display image according to the control of a drive circuit in the backplane 43b. If the display 43 is a liquid crystal display, the display image generation layer 43a includes liquid crystal configured to allow control of the polarization direction for each pixel. If the display 43 is an organic EL display, the display image generation layer 43a includes organic material configured to allow control of the blinking for each pixel. The backplane 43b includes a drive circuit that drives the liquid crystal or organic material in the display image generation layer 43a according to the video signal supplied from the host processor 32.

[0047] The support plate 45 is a plate-shaped member provided to protect the display 43 from impact. "plate PT" shown in Figure 7 of Patent Document 2 and "supporter SP" shown in Figure 7 of Patent Document 3 are examples of such support plates. The support plate 45 is constructed from a rigid substrate (for example, a glass epoxy substrate such as FR4 (Flame Retardant Type 4)) that has low conductivity and rigidity. The support plate 45 is constructed from a low-conductivity material to avoid affecting the electromagnetic induction used by the EMR sensor 42. Furthermore, the support plate 45 is provided with a configuration to enable bending while maintaining durability. This configuration may be grooves, such as "grooves H" described in Patent Document 2, or a plurality of holes arranged along the bending axis BA. This allows the support plate 45 to be bent along the illustrated bending axis BA.

[0048] Figure 6 shows the planar configuration of the Tx electrode layer 42T. As shown in the figure, the Tx electrode layer 42T has a configuration in which a coil (hereinafter referred to as a "comb coil") is formed in a single layer on the lower surface of the support plate 45, in which one end of a plurality of teeth 100 extending in the x direction is connected to a base 101 extending in the y direction. When a Tx coil or Rx coil for the EMR sensor 42 is provided separately from the Tx electrode or Rx electrode that constitutes the touch sensor 41, it is preferable to make the Tx coil or Rx coil a comb coil, as shown in the Tx electrode layer 42T of Figure 6. Each tooth 100 is arranged at equal intervals in the y direction. The other end of each tooth 100 is provided with a pad 102 which is connected by crimping to a connector terminal provided on the surface of the flexible printed circuit board 80 shown in Figure 5. Each pad 102 is arranged along one side of the support plate 45 that extends in the y direction. Note that Figure 6 shows an example where the number of teeth 100 is 16, but this is just an example, and the number of teeth 100 is not limited to 16.

[0049] As shown in Figure 6, the arrangement of each part constituting the Tx electrode layer 42T is determined such that only the base 101 is positioned across the bending axis BA. This minimizes the possibility of wire breakage occurring in the Tx electrode layer 42T when the structure 33 is bent along the bending axis BA.

[0050] Figure 6 shows the symbols "T0" to "T 11 " represents an individual Tx coil composed of a comb-type coil within the Tx electrode layer 42T. In other words, the comb-type coil within the Tx electrode layer 42T consists of 12 Tx coils T0~T 11 This configuration makes it possible to achieve this. This point will be explained in detail below with reference to Figure 7.

[0051] Figure 7 shows the electrical configuration of the Tx electrode layer 42T. The switch circuit 30 according to this embodiment is configured with a switch 55 for each tooth portion 100. Each switch 55 is a 3-throw single-pole switch, and its common terminal is connected to the other end of the corresponding tooth portion 100. In addition, the second selection terminal of each switch 55 is connected to the open end.

[0052] The Tx circuit 60 is configured to output an AC current Tx and an AC current Tx_inv obtained by inverting the phase of the AC current Tx. The first selection terminal of each switch 55 is commonly connected to the output terminal of the AC current Tx of the Tx circuit 60, and the third selection terminal is commonly connected to the output terminal of the AC current Tx_inv of the Tx circuit 60.

[0053] When the sensor controller 31 sends an alternating magnetic field from the Tx electrode layer 42T, it first selects one of the teeth 100, switches the two switches 55 corresponding to the two teeth 100 adjacent to one side of that tooth to the first selection terminal, and switches the two switches 55 corresponding to the two teeth 100 adjacent to the other side to the third selection terminal. For the other switches 55, the sensor controller 31 keeps the second selection terminal selected. Figure 7 shows the state in which the sensor controller 31 has selected the tooth 100 at the position indicated as "T5" in the figure.

[0054] After switching each switch 55 as described above, the sensor controller 31 starts outputting alternating currents Tx and Tx_inv from the Tx circuit 60. As a result, alternating current Tx flows through the two teeth 100 adjacent to one side of the selected tooth 100 (the teeth 100 at positions indicated as "T3" and "T4" in the example of Figure 7), and alternating current Tx_inv flows through the two teeth 100 adjacent to the other side of the selected tooth 100 (the teeth 100 at positions indicated as "T6" and "T7" in the example of Figure 7). Thus, a virtual loop coil is formed centered on the tooth 100 selected by the sensor controller 31, and an alternating magnetic field is emitted from this virtual loop coil. The Tx coil in the Tx electrode layer 42T is composed of this virtual loop coil.

[0055] Figure 8 shows the planar and electrical configuration of the Rx electrode layer 42R. Here, the Rx electrode layer 42R has a two-layer structure, and is composed of another layer separate from the layer shown in Figure 8. The Tx electrode (not shown) of the touch sensor 41 is formed on this other layer. The following explanation will focus on the layer shown in Figure 8.

[0056] As shown in Figure 8, the Rx electrode layer 42R consists of N+1 coil-shaped electrodes R0 to R, which respectively constitute the Rx coil of the EMR sensor 42 and the Rx electrode of the touch sensor 41. N It has a configuration in which the coil electrodes R0 to R are arranged side by side in the x direction. In the following description, the coil electrodes R0 to R N When there is no need to distinguish between them specifically, they may be collectively referred to as "coil-shaped electrodes R". Each coil-shaped electrode R is arranged in the x-direction so as not to overlap with others.

[0057] Each coiled electrode R is made of a U-shaped (Π-shaped) conductor, with one end of each of two conductors 111 and 112 extending parallel to each other in the y-direction connected by a connecting wire 110 extending in the x-direction. The connecting wire 110 extends outside the active area A and is made of an opaque plate-shaped conductor. When the Tx electrode or Rx electrode of the touch sensor 41 and the Tx coil or Rx coil of the EMR sensor 42 are shared, it is preferable to use a U-shaped (Π-shaped) conductor, as shown in the coiled electrode R of Figure 8. This is because if the coiled electrode R is made of the comb-shaped coil described above, it forms one large conductor as a whole, resulting in excessively large wiring capacitance, making it difficult to function as the Tx electrode or Rx electrode of the touch sensor 41. On the other hand, if the coiled electrode R is made of a U-shaped (Π-shaped) conductor, each coiled electrode R is electrically isolated from each other, so such a problem does not occur. Furthermore, by forming each coil-shaped electrode R in a U-shape (Π shape), it becomes possible to form each coil-shaped electrode R so that they do not overlap with each other, as illustrated in Figure 8. In this way, it becomes possible to form the Rx electrode layer 42R and the Rx electrode of the touch sensor 41 in a single layer.

[0058] Of the conductors 111 and 112 of each coil-shaped electrode R, those extending within the active area A are composed of mesh electrodes having a predetermined repeating local pattern (represented by intersecting thin lines in Figure 8). On the other hand, of the conductors 111 and 112 of each coil-shaped electrode R, those extending only outside the active area A are composed of opaque plate-shaped conductors similar to the connecting wiring 110. In the example in Figure 8, N coil-shaped electrodes R0 to R N Among them, the coil-shaped electrodes R0 and R located at both ends N Other coil-shaped electrodes R1~R N-1 The conductors 111 and 112 are both extended so as to overlap the active area A and are composed of mesh electrodes. Conductor 112 of the coil electrode R0 (conductor on the side closer to coil electrode R1), and coil electrode R NThe conductor 111 (coil-shaped electrode R N-1 on the side closer to the ) is also extended so as to cover the inside of the active area A, and is composed of a mesh electrode. On the other hand, the conductor 111 of the coil-shaped electrode R0 and the conductor 112 of the coil-shaped electrode R N are extended only outside the active area A and are composed of an opaque metal conductor.

[0059] Among the conductors 111 and 112 of each coil-shaped electrode R, those extended so as to cover the inside of the active area A are composed of mesh electrodes in order to minimize the influence on the visibility of the image displayed by the display 43. In order to reduce the variation in visibility within the active area A, it may be possible to form dummy mesh electrodes in the area between the conductors 111 and 112. Instead of the mesh electrodes, a transparent electrode such as ITO (indium tin oxide) may be used.

[0060] The switch circuit 30 according to the present embodiment is configured to have a switch 56 for each coil-shaped electrode R. Each switch 56 is composed of a double-throw single-pole switch having a selection terminal connected to one end of the corresponding coil-shaped electrode R, a selection terminal grounded, and a common terminal connected to the other end of the corresponding coil-shaped electrode R. Further, the Rx circuit 61 has an inverting amplifier circuit 90 for each coil-shaped electrode R, and one end of each coil-shaped electrode R is connected to the input end of the corresponding inverting amplifier circuit 90 in addition to the selection terminal of the corresponding switch 56.

[0061] When the sensor controller 31 uses each coil-shaped electrode R as the Rx coil of the EMR sensor, it switches each switch 56 to the grounded selection terminal side. As a result, since the connection state of each coil-shaped electrode R becomes the same as the connection state of each loop coil LCx shown in FIG. 4, the sensor controller 31 can derive the position of the electromagnetic induction pen 2 within the panel surface 3a by performing the same process as the process described with reference to FIG. 4.

[0062] On the other hand, when each coil-shaped electrode R is used as the Rx electrode of the touch sensor 41, the sensor controller 31 switches each switch 56 to the selection terminal connected to one end of the corresponding coil-shaped electrode R. As a result, each coil-shaped electrode R functions as a single linear electrode, and this linear electrode is connected to each inverting amplifier circuit 90. Therefore, the sensor controller 31 can determine the position of the finger on the panel surface 3a by performing the same processing as described with reference to Figure 1.

[0063] As explained above, according to the position detection system 1 of this embodiment, the Rx electrode layer 42R is arranged on the side opposite to the side where the Tx electrode layer 42T is provided, centered on the display image generation layer. Therefore, one side (the Rx electrode layer 42R in this embodiment) is incorporated into the display 43 together with the touch sensor 41 (thus enabling precise position determination with respect to the folding axis BA), and only the other side (the Tx electrode layer 42T in this embodiment) is designed to be foldable. In this embodiment, this design involves forming the Tx electrode layer 42T as a single layer, and furthermore, ensuring that only one wire (specifically, the base 101) spans the folding axis BA. If the configuration spanning the folding axis BA is limited to this extent, the Tx electrode layer 42T can be made foldable even if it is difficult to precisely determine the position of each wire within the Tx electrode layer 42T with respect to the folding axis BA. Therefore, according to the position detection system 1 of this embodiment, it is possible to provide a position detection device that includes a foldable display and is compatible with position detection of an electromagnetic induction pen using the EMR method.

[0064] In this embodiment, an example in which the Tx electrode layer 42T is constructed using a comb-shaped coil has been described, but the Rx electrode layer 42R can also be constructed using a similar comb-shaped coil. Furthermore, the Tx electrode layer 42T can also be constructed using multiple coil-shaped electrodes arranged so as not to overlap each other. In this case, if it is possible to determine the position of each coil-shaped electrode so that the bending axis BA is included in the area without wiring between the coil-shaped electrodes, then this should be done. If the area without wiring between the coil-shaped electrodes is narrow and it is difficult to determine such a position, then the position of each coil-shaped electrode should be determined so that the wiring corresponding to the connecting wiring 110 shown in Figure 8 straddles the bending axis BA.

[0065] Figure 9 shows the layered structure of the structure 33 included in the position detection device 3 according to the first modification of this embodiment. The position detection device 3 according to this modification differs from the position detection device 3 according to this embodiment in that the support plate 45 is divided into two support plates 45-1 and 45-2 with the bending axis BA as the boundary.

[0066] Figure 10 shows the planar configuration of the Tx electrode layer 42T according to this modified example. As shown in the figure, in this modified example, it is necessary to arrange the Tx electrode layer 42T across the surfaces of the two separate support plates 45-1 and 45-2. Therefore, a bent portion 104 made of a flexible member or structure is provided between the support plates 45-1 and 45-2, and a connecting conductor 103 extending across the bending axis BA is formed on its surface. The connecting conductor 103 electrically connects the base portion 101 provided on each of the support plates 45-1 and 45-2, and is preferably made of a material or structure that is less prone to breakage during bending compared to the base portion 101 and the teeth portion 100. By adopting the above configuration, this modified example also makes it possible to provide a position detection device that includes a foldable display and is compatible with position detection of an electromagnetic induction pen using the EMR method.

[0067] Figure 11 shows the layer structure of a structure 33 included in a second modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the first modified position detection device 3 in that it does not have an adhesive layer 72 and a magnetic shield 46, and the Tx electrode layer 42T is arranged on the upper surface of the support plates 45-1 and 45-2. Thus, when the adhesive layer 72 and magnetic shield 46 are not provided, it is preferable to arrange the Tx electrode layer 42T on the upper surface rather than the lower surface of the support plates 45-1 and 45-2.

[0068] Figure 12 shows the layer structure of a structure 33 included in a third modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the position detection device 3 of this embodiment in that the positions of the Tx electrode layer 42T and the Rx electrode layer 42R are swapped. In this modified example, the touch sensor 41 is included within the Tx electrode layer 42T. Thus, the Tx electrode layer 42T may be provided inside the display 43, and the Rx electrode layer 42R may be provided on the surface of the support plate 45.

[0069] Figure 13 shows the layer structure of a structure 33 included in a position detection device 3 according to a fourth modification of this embodiment. This modification of the position detection device 3 differs from the third modification of the position detection device 3 in that the Rx electrode layer 42R is formed on the upper surface of the support plate 45. However, the Rx electrode layer 42R in this modification, like the Rx electrode layer 42R in the third modification, is crimped to a connector terminal provided on the surface of the flexible printed circuit board 80 on the lower surface of the support plate 45. To achieve this, the structure 33 in this modification has a plurality of crimping pads on the lower surface of the support plate 45, and each Rx coil constituting the Rx electrode layer 42R is connected to each of these multiple pads by via conductors (not shown). Thus, the Rx electrode layer 42R may be connected to the flexible printed circuit board 80 on the side opposite to the surface of the support plate 45 on which it is formed.

[0070] Figure 14 shows the layer structure of a structure 33 included in a fifth modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the position detection device 3 of this embodiment in that the Rx electrode layer 42R is provided on the same layer as the backplane 43b instead of the touch sensor 41. Thus, the Rx electrode layer 42R may be provided on the same layer as the backplane 43b, and in this case, each Rx coil is extended to avoid the pixel driving elements and wiring that are originally placed in the backplane 43b. Although not shown, for example, the Tx electrode layer 42T of the third modified example shown in Figure 12 may also be provided on the same layer as the backplane 43b, similar to the Rx electrode layer 42R of this modified example.

[0071] Next, a position detection system 1 according to a second embodiment of the present invention will be described. The position detection system 1 according to this embodiment differs from the position detection system 1 according to the first embodiment in that an Rx electrode layer 42R is placed on the lower surface of the support plate 45 and a Tx electrode layer 42T is placed on the upper surface of the support plate 45. In other respects, it is the same as the position detection system 1 according to the first embodiment, so the following description will focus on the differences from the position detection system 1 according to the first embodiment.

[0072] Figure 15 shows the layer structure of the structure 33 included in the position detection device 3 according to this embodiment. As shown in the figure, in the position detection device 3 according to this embodiment, the Rx electrode layer 42R is arranged on the lower surface of the support plate 45, and the Tx electrode layer 42T is arranged on the upper surface of the support plate 45. Each Rx coil in the Rx electrode layer 42R and each Tx coil in the Tx electrode layer 42T are formed in a single layer. Specifically, each of the Rx coil and Tx coil may be composed of a comb-shaped coil similar to those described with reference to Figures 6 and 7, or of multiple coils arranged so as not to overlap each other.

[0073] Multiple pads to be crimped onto the connector terminals of the flexible printed circuit board 80 are provided on the underside of the support plate 45 for both the Rx coils and the Tx coils. Each Rx coil in the Rx electrode layer 42R is connected to its corresponding pad by a coplanar wiring (not shown), and each Tx coil in the Tx electrode layer 42T is connected to its corresponding pad by a via conductor (not shown).

[0074] As described above, with the position detection system 1 according to this embodiment, each Rx coil in the Rx electrode layer 42R and each Tx coil in the Tx electrode layer 42T are formed as a single layer on each surface of the support plate 45. Therefore, even if it is difficult to precisely determine the position of the wiring in each layer with respect to the bending axis BA, compared to the case where they are formed in multiple layers, it is possible to suppress the occurrence of wire breakage due to bending. Accordingly, it can be said that the position detection system 1 according to this embodiment also makes it possible to provide a position detection device that includes a foldable display and is compatible with position detection of an electromagnetic induction pen using the EMR method.

[0075] Furthermore, the position detection system 1 according to this embodiment makes it possible to thin the structure 33 including the EMR sensor 42 compared to the case where one or both of the Rx coils in the Rx electrode layer 42R and the Tx coils in the Tx electrode layer 42T are formed in multiple layers.

[0076] Figure 16 shows the layer structure of a structure 33 included in a first modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the position detection device 3 of this embodiment in that an Rx electrode layer 42R is formed on the upper surface of the support plate 45 and a Tx electrode layer 42T is formed on the lower surface of the support plate 45. In this modified configuration, each Tx coil in the Tx electrode layer 42T is connected to the corresponding pad by wiring on the same plane (not shown), and each Rx coil in the Rx electrode layer 42R is connected to the corresponding pad by via conductors (not shown). This modified configuration also makes it possible to provide a position detection device that includes a foldable display and supports position detection of an electromagnetic induction pen using the EMR method, for the same reasons as in this embodiment, and it also makes it possible to make the structure 33 including the EMR sensor 42 thinner.

[0077] Figure 17(a) shows the upper surface of the support plate 45 included in the position detection device 3 according to the second modification of this embodiment, and Figure 17(b) shows the lower surface of the support plate 45 included in the position detection device 3 according to the second modification of this embodiment. The position detection device 3 according to this modification differs from the position detection device 3 according to this embodiment in that the Rx electrode layer 42R and the Tx electrode layer 42T are each formed on both the upper and lower surfaces of the support plate 45. In this modification, of the wiring formed on the Rx electrode layer 42R and the Tx electrode layer 42T, the portion extending in the y direction is formed on the upper surface of the support plate 45, and the portion extending in the x direction is formed on the lower surface of the support plate 45. Each portion of each Tx coil and each Rx coil is interconnected by via conductor VC, thereby forming a single coil when viewed in plan. Both ends of each Tx coil and each Rx coil are connected to pad PD, respectively. With this modified configuration, for the same reasons as in this embodiment, it is possible to provide a position detection device that includes a foldable display and supports position detection of an electromagnetic induction pen using the EMR method, and it is also possible to make the structure 33 including the EMR sensor 42 thinner. Of course, in Figures 17(a) and (b), the Rx electrode layer 42R and the Tx electrode layer 42T may be swapped.

[0078] Next, a position detection system 1 according to a third embodiment of the present invention will be described. The position detection system 1 according to this embodiment differs from the position detection system 1 according to the first embodiment in that the display 43 is not foldable, and the Tx electrode layer 42T is provided on the same layer as the backplane 43b, rather than on the surface of the support plate 45. In other respects, it is the same as the position detection system 1 according to the first embodiment, so the following description will focus on the differences from the position detection system 1 according to the first embodiment.

[0079] Figure 18 shows the layer structure of the structure 33 included in the position detection device 3 according to this embodiment. As can be seen by comparing Figure 18 with Figure 5, the structure 33 according to this embodiment differs from the structure 33 according to the first embodiment in that it has a cover glass 44 instead of a cover film 40, does not have a support plate 45, a magnetic shield 46, or adhesive layers 71 and 72, and the Tx electrode layer 42T is provided in the same layer as the backplane 43b.

[0080] The structure 33 according to this embodiment has a cover glass 44 instead of a cover film 40 because it does not need to be bent. The cover glass 44 does not bend, but on the other hand it has higher strength and durability than the cover film 40, so when bending is not required, it is preferable to use the cover glass 44 instead of the cover film 40. Because a high-strength cover glass 44 is used, a support plate 45 is not required in the structure 33 according to this embodiment.

[0081] In this embodiment, each Rx coil within the Rx electrode layer 42R is formed as a single layer on one surface (specifically, the upper surface) of the display image generation layer 43a. The specific configuration of each Rx coil may be the same as that described with reference to Figure 8. That is, multiple Rx coils are formed by multiple coil-shaped electrodes R that do not overlap each other, and of the conductors 111, 112 that make up each coil-shaped electrode R, those that extend into the active area A are made of mesh electrodes, and those that extend only outside the active area A are made of opaque plate-shaped conductors. In addition, connecting wiring 110, which is an opaque plate-shaped conductor, can be provided outside the active area A to connect one end of each of the conductors 111, 112.

[0082] Furthermore, in this embodiment, each Tx coil within the Tx electrode layer 42T is formed in a single layer on the same layer as the backplane 43b. Specifically, similar to the Rx coils in the Rx electrode layer 42R described with reference to Figure 14, each Tx coil should be extended to avoid the pixel driving elements and wiring that are originally placed in the backplane 43b. Also, the planar shape of the Tx electrode layer 42T can be a comb-shaped coil as described with reference to Figure 6.

[0083] As described above, according to the position detection system 1 of this embodiment, each Rx coil in the Rx electrode layer 42R and each Tx coil in the Tx electrode layer 42T are formed in a single layer, making it possible to reduce the thickness of the structure 33 including the EMR sensor 42.

[0084] In this embodiment, bending of the structure 33 is not a problem in the position detection device 3. However, the configuration of the Rx electrode layer 42R and the Tx electrode layer 42T in this embodiment can also be applied to the structure 33 described in the first embodiment. In that case, it becomes possible to precisely position each wiring in the Rx electrode layer 42R and each wiring in the Tx electrode layer 42T with respect to the bending axis BA, making it possible to provide a position detection device that includes a foldable display and is compatible with position detection of an electromagnetic induction pen using the EMR method.

[0085] Figure 19 shows the layer structure of a structure 33 included in the position detection device 3 according to the first modification of this embodiment. The position detection device 3 according to this modification differs from the position detection device 3 according to this embodiment in that both the Rx coil and Tx coil constituting the EMR sensor 42 are formed in the same layer as the backplane 43b. According to this modification, although the Rx coil of the EMR sensor 42 and the Rx electrode of the touch sensor 41 cannot be made of the same coil-shaped electrode, by making the Tx coil and Rx coil of the EMR sensor 42, respectively, a comb-shaped coil similar to those described with reference to Figures 6 and 7, or a plurality of coil-shaped electrodes arranged so as not to overlap, it becomes possible to make the structure 33 including the EMR sensor 42 thinner compared to when one or both of the Tx coil and Rx coil of the EMR sensor 42 are made of a multilayer structure.

[0086] Figure 20 shows the layer structure of a structure 33 included in a second modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the position detection device 3 of this embodiment in that the Tx electrode layer 42T is not provided inside the display 43, but is placed below the display 43 via an adhesive layer 71. Thus, the Tx electrode layer 42T may be placed below the display 43 via an adhesive layer 71. In this case, the specific configuration of the Tx electrode layer 42T may be a comb-shaped coil similar to that described with reference to Figures 6 and 7, or it may be a plurality of electrically isolated coil-shaped electrodes. In the latter case, a plurality of Tx coils may be configured using multiple layers (i.e., overlapping), or a plurality of Tx coils may be configured in a single layer (i.e., not overlapping). If a plurality of Tx coils are formed in a single layer, the structure 33 including the EMR sensor 42 can be made thinner, and it will also be possible to provide a position detection device that includes a foldable display and supports position detection of an electromagnetic induction pen using the EMR method.

[0087] Next, a position detection system 1 according to a fourth embodiment of the present invention will be described. Figure 21 is a diagram showing the layer structure of a structure 33 included in the position detection device 3 according to this embodiment. As shown in the figure, the position detection system 1 according to this embodiment differs from the position detection system 1 according to the third embodiment in that an integrated sensor 47 (integrated sensor layer) is provided on the upper surface of the display image generation layer 43a in place of the Rx electrode layer 42R including the touch sensor 41, and the Tx electrode layer 42T is not provided on the same layer as the backplane 43b. The integrated sensor 47 integrates the touch sensor 41 and the EMR sensor 42, and performs the roles of both the touch sensor 41 and the EMR sensor 42. In other respects, it is the same as the position detection system 1 according to the third embodiment, so the following description will focus on the differences from the position detection system 1 according to the third embodiment.

[0088] Figures 22 to 24 show the planar configuration of the integrated sensor 47. The integrated sensor 47 according to this embodiment is formed using two layers, with Figure 22 showing the configuration of the lower layer and Figure 23 showing the configuration of the upper layer. Figure 24 shows both layers superimposed.

[0089] First, referring to Figure 22, the lower layer consists of multiple square-shaped mesh electrodes 120, arranged in a dense grid pattern at an angle of 45 degrees to both the x and y directions. Each mesh electrode 120 has a square hollow section inside, within which a square mesh electrode 121 is placed. Adjacent mesh electrodes 120, and mesh electrodes 121 and the mesh electrodes 120 inside them, are insulated from each other by leaving small gaps. In the following, the rows of the densely arranged grid-patterned mesh electrodes 120 will be identified by the illustrated X coordinates (X1 to X11) and the rows by the illustrated Y coordinates (Y1 to Y11).

[0090] Mesh electrodes 120 belonging to even-numbered rows (i.e., rows with Y coordinates Y2, Y4, Y6, Y8, Y10) are connected to other mesh electrodes 120 adjacent to them in the x-direction by bridge conductors 122, which are mesh electrodes extending in the x-direction. Each bridge conductor 122 is integrated with two mesh electrodes 120 adjacent to it in the x-direction, while being insulated from two mesh electrodes 120 adjacent to it in the y-direction by leaving a small gap between them. With this configuration, a mesh conductor 130 extending in the x-direction is formed for each even-numbered row of mesh electrodes 120.

[0091] Referring to Figure 23, the upper layer is provided with jumper wiring 123, 124 and connecting wiring 125. Each jumper wiring 123 consists of multiple linear conductors extending along the odd-numbered rows of the mesh electrode 120 (i.e., the rows with X coordinates X1, X3, X5, X7, X9, X11). However, each linear conductor constituting the jumper wiring 123 is cut in small increments at positions corresponding to the even-numbered rows of the mesh electrode 120. Each linear conductor constituting the jumper wiring 123 is connected to one another by connecting wiring 125 at the end of a portion provided at one end in the y direction.

[0092] Each jumper wiring 124 is composed of multiple linear conductors extending along the even-numbered rows of the mesh electrode 120 (i.e., the rows with X coordinates X2, X4, X6, X8, and X10). However, each linear conductor constituting the jumper wiring 124 is significantly cut at positions corresponding to the odd-numbered rows of the mesh electrode 120 (i.e., the rows with Y coordinates Y1, Y3, Y5, Y7, Y9, and Y11).

[0093] Next, referring to Figure 24, it can be seen that the jumper wiring 123 connects multiple mesh electrodes 121 arranged in odd-numbered rows to each other, and the jumper wiring 124 connects multiple mesh electrodes 120 arranged in even-numbered rows to each other. The connections between the jumper wiring 123 and the mesh electrodes 121, and between the jumper wiring 124 and the mesh electrodes 120, are made by via conductors (not shown). The multiple mesh electrodes 121 arranged in odd-numbered rows are connected by the jumper wiring 123 to form each tooth 131 of the comb-shaped coil. The base of this comb-shaped coil is made up of connecting wiring 125. In addition, the multiple mesh electrodes 121 arranged in even-numbered rows are connected by the jumper wiring 124 to form a linear conductor 132 extending in the y direction.

[0094] In this embodiment, the term "jumper wiring" is used, but in some literature, wiring that serves the same purpose as the "jumper wiring" in this embodiment, connecting wiring of different layers to each other, may be referred to by other terms such as "bridge wiring" or "connecting conductor," and the "jumper wiring" in this embodiment includes "bridge wiring" and "connecting conductor" in that sense.

[0095] Furthermore, while the above description states that the jumper wiring 123 serves to connect multiple mesh electrodes 121 arranged in odd-numbered rows, it can also be said that, conversely, multiple mesh electrodes 121 arranged in odd-numbered rows serve to connect multiple jumper wirings 123, and in that sense, multiple mesh electrodes 121 arranged in odd-numbered rows can also be called "jumper wiring," "bridge wiring," or "connecting conductor." Similarly, it can be said that multiple mesh electrodes 120 arranged in even-numbered rows serve to connect multiple jumper wirings 124, and in that sense, multiple mesh electrodes 120 arranged in even-numbered rows can also be called "jumper wiring," "bridge wiring," or "connecting conductor."

[0096] Figures 25 and 26 show the electrical configuration of the integrated sensor 47. Figure 25 shows the configuration when the integrated sensor 47 is used as an EMR sensor, and Figure 26 shows the configuration when the integrated sensor 47 is used as a touch sensor.

[0097] First, referring to Figure 25, in order to use the integrated sensor 47 as an EMR sensor, the switch circuit 30 is configured to have switches 57a, 57b, and 58. The sensor controller 31 is configured to have Tx circuits 60a, 60b and Rx circuit 61a. The Tx circuits 60a and 60b have output terminals for AC currents Tx and Tx_inv, respectively, as explained with reference to Figure 7, and the Rx circuit 61a has a differential amplifier with a non-inverting input terminal and an inverting input terminal.

[0098] Switch 57a is a multi-throw bipolar switch including a first common terminal connected to the output terminal of the AC current Tx of the Tx circuit 60a, a second common terminal connected to the output terminal of the AC current Tx_inv of the Tx circuit 60a, and a plurality of selectable terminals connected to one end of each of the plurality of mesh conductors 130. Switch 57b is a multi-throw bipolar switch including a first common terminal connected to the output terminal of the AC current Tx_inv of the Tx circuit 60b, a second common terminal connected to the output terminal of the AC current Tx of the Tx circuit 60b, and a plurality of selectable terminals connected to the other end of each of the plurality of mesh conductors 130. Switch 58 is a multi-throw bipolar switch including a first common terminal and a second common terminal connected to the non-inverting input terminal and inverting input terminal of the differential amplifier located in the Rx circuit 61a, respectively, and a plurality of selectable terminals connected to the other end of each of the plurality of teeth 131 (the end opposite to the end connected to the connecting wiring 125).

[0099] When deriving the position of the electromagnetic induction pen 2 using the integrated sensor 47, the sensor controller 31 first selects one of the mesh conductors 130, and at switch 57a, connects the selection terminal corresponding to the mesh conductor 130 adjacent to the selected mesh conductor 130 on one side to the first common terminal, and the selection terminal corresponding to the mesh conductor 130 adjacent on the other side to the second common terminal. Similarly, at switch 57b, the sensor controller 31 connects the selection terminal corresponding to the mesh conductor 130 adjacent to the selected mesh conductor 130 on one side to the first common terminal, and the selection terminal corresponding to the mesh conductor 130 adjacent on the other side to the second common terminal.

[0100] Subsequently, the sensor controller 31 starts outputting alternating currents Tx and Tx_inv from Tx circuits 60a and 60b, respectively. This causes alternating currents to flow in opposite directions on both sides of the selected mesh conductor 130, forming a virtual Tx coil centered on the selected mesh conductor 130, and an alternating magnetic field is emitted. After a specified time has elapsed since the start of outputting the alternating currents Tx and Tx_inv, the sensor controller 31 stops outputting the alternating currents Tx and Tx_inv and controls the switch 58 to connect one of the two adjacent teeth 131 to the non-inverting input terminal of the differential amplifier in Rx circuit 61a, and the other to the inverting input terminal of the differential amplifier in Rx circuit 61a. As a result, a virtual Rx coil is formed by the two teeth 131 connected to the differential amplifier in Rx circuit 61a and the connecting wiring 125 between them, and the pen signal generated by the pen alternating magnetic field emitted by the electromagnetic induction pen 2 in response to the alternating magnetic field is output from the output terminal of the differential amplifier.

[0101] The sensor controller 31 performs the above processing while changing the combination of the selected mesh conductor 130 and the teeth 131 connected to the differential amplifier in the Rx circuit 61a, thereby acquiring the strength of the pen signal (strength of the pen alternating magnetic field) at each intersection of the virtual Tx coil and the virtual Rx coil. Then, based on the two-dimensional distribution of the acquired pen signal strength, the position of the electromagnetic induction pen 2 within the panel surface 3a is derived.

[0102] Next, referring to Figure 26, in order to use the integrated sensor 47 as a touch sensor, the switch circuit 30 is configured to have switches 50a and 50b. The sensor controller 31 is configured to have Tx circuits 60c and 60d and an Rx circuit 61b. The Tx circuit 60c is configured to output an AC current Tx, and the Tx circuit 60d is configured to output an AC current Tx_inv obtained by inverting the phase of the AC current Tx. Note that the AC currents Tx and Tx_inv referred to here may be the same as the AC currents Tx and Tx_inv (AC currents for the EMR sensor) described above, or they may be different. The Rx circuit 61b is configured to have an inverting amplifier circuit for each linear conductor 132. This inverting amplifier circuit may be the same as the inverting amplifier circuit 90 shown in Figure 8. The input terminal of each inverting amplifier circuit is connected to one end of the corresponding linear conductor 132.

[0103] Switch 50a is a multi-throw single-pole switch that includes a common terminal connected to the output terminal of the AC current Tx of the Tx circuit 60c and multiple selectable terminals connected to one end of each of the multiple mesh conductors 130. Switch 50b is a multi-throw single-pole switch that includes a common terminal connected to the output terminal of the AC current Tx_inv of the Tx circuit 60d and multiple selectable terminals connected to the other end of each of the multiple mesh conductors 130.

[0104] When deriving the finger position using the integrated sensor 47, the sensor controller 31 first selects one of the mesh conductors 130, and connects the selection terminal corresponding to the selected mesh conductor 130 to the common terminal in each of the switches 50a and 50b.

[0105] Next, the sensor controller 31 simultaneously starts outputting the AC current Tx from the Tx circuit 60c and the AC current Tx_inv from the Tx circuit 60d. While these outputs are being maintained, the sensor controller 31 acquires the intensity of the signals output from each inverting amplifier circuit in the Rx circuit 61b (hereinafter referred to as "finger touch detection signals").

[0106] The sensor controller 31 performs the above processing while changing the selected mesh conductor 130, thereby acquiring the intensity of the finger touch detection signal at each intersection of the mesh conductor 130 and the linear conductor 132. Then, based on the two-dimensional distribution of the acquired finger touch detection signal intensity, it derives the position of the finger within the panel surface 3a.

[0107] As described above, with the position detection device 3 according to this embodiment, the integrated sensor 47 that functions as both an EMR sensor and a touch sensor can be formed in two layers. Therefore, it is possible to achieve a level of thinning of the structure 33 including the touch sensor and EMR sensor that is equivalent to, for example, the position detection device 3 described in the third embodiment (shown in Figure 18).

[0108] Furthermore, the integrated sensor 47 in this embodiment can also be applied to the structure 33 described in the first embodiment. In that case, each wire of the integrated sensor 47 can be precisely positioned with respect to the bending axis BA, making it possible to provide a position detection device that includes a foldable display and is compatible with position detection of an electromagnetic induction pen using the EMR method.

[0109] In this embodiment, an example in which the integrated sensor 47 is formed in two layers has been described, but it is of course possible to form it in three layers. For example, the Tx coil and Rx coil that constitute the EMR sensor may be provided in the first and second layers, respectively, and the Tx electrode and Rx electrode that constitute the touch sensor may both be provided in the third layer, and at the intersection of the Tx electrode and Rx electrode, the connecting wiring provided in the second layer may be used to reroute either the Tx electrode or the Rx electrode to the second layer.

[0110] Figure 27 shows the layer structure of a structure 33 included in the first modified position detection device 3 of this embodiment. This modified position detection device 3 differs from the position detection device 3 of this embodiment in that the integrated sensor 47 is placed outside (above) the display 43 rather than inside it. The integrated sensor 47 and the display 43 are bonded together by an adhesive layer 73. This configuration also makes it possible to make the structure 33, which includes the touch sensor and EMR sensor, thinner, similar to the position detection device 3 of this embodiment.

[0111] Figure 28 shows the planar configuration of the integrated sensor 47 according to a second modification of this embodiment. This figure corresponds to an enlarged view of a part of the integrated sensor 47 shown in Figure 24. As can be seen by comparing this figure with Figure 24, the position detection device 3 according to this modification differs from the position detection device 3 according to this embodiment in that a pair of mesh electrodes 121 are connected to each other by a plurality of parallel jumper wires 123, and a plurality of bypass wires 126 are provided at positions corresponding to the inside of each mesh electrode 121 when viewed in plan. The bypass wires 126 are wires provided on the same layer as the jumper wires 123. In Figure 28, the circular portions provided at the ends of each jumper wire 123 and each bypass wire 126 represent the positions of via conductors connecting the jumper wire 123 or bypass wire 126 to the mesh electrode 121. In this way, it is possible to make the wiring resistance of the virtual Rx coil, which is composed of the teeth 131 and the connecting wire 125, smaller than in the case of this embodiment.

[0112] Here, preferred configuration examples of the position detection device, sensor, and display according to this embodiment are summarized. The position detection device, sensor, and display according to this embodiment are preferably configured as shown below: A1~A14, B1~B7, C1~C3, D1~D10, E1~E7, F1~F6, G1, H1, I1, J1, K1, L1, M1, N1, O1~O14, P1~P7, Q1~Q9, R1~R8, S1, T1, U1, V1, X1, Y1, Z1, AA1. (Composition A1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A Tx electrode layer on which Tx electrodes that generate an alternating magnetic field are arranged, On the side opposite to the Tx electrode layer, centered on the display image generation layer, is an Rx electrode layer in which a plurality of Rx electrodes are arranged to detect the pen alternating magnetic field generated by the pen that has accumulated power by the alternating magnetic field. A position detection device including a position detection device. (Configuration A2) The Tx electrodes constitute a plurality of Tx coils arranged in a line in a first direction. The plurality of Rx electrodes constitute a plurality of Rx coils arranged side by side in a second direction intersecting the first direction. The position detection device described in configuration A1. (Configuration A3) An integrated circuit that derives the coordinates of the pen based on the intensity at each intersection of the plurality of Tx coils and the plurality of Rx coils of the pen alternating magnetic field emitted by the pen in response to the alternating magnetic field, A position detection device as described in configuration A2, including the above. (Configuration A4) The plurality of Rx electrodes are formed in a single layer on one surface of the display image generation layer. The position detection device described in configuration A1. (Configuration A5) The aforementioned multiple Rx electrodes are composed of multiple coil-shaped electrodes that do not overlap each other. The position detection device described in configuration A4. (Configuration A6) Each of the aforementioned multiple coil-shaped electrodes includes a transparent portion made of a transparent conductor. The position detection device described in configuration A5. (Configuration A7) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a predetermined repeating local pattern. The position detection device described in configuration A5. (Configuration A8) Of the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first and second coil-shaped electrodes located at both ends include two parallel-extending mesh electrodes. The position detection device described in configuration A7. (Configuration A9) Of the plurality of coil-shaped electrodes, each coil-shaped electrode other than the first coil-shaped electrode and the second coil-shaped electrode has a connecting wire connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device described in configuration A8. (Configuration A10) The first and second coil-shaped electrodes, located at both ends of the plurality of coil-shaped electrodes, each have an opaque metal conductor extending parallel to the mesh electrode. The position detection device described in configuration A7. (Configuration A11) The Tx electrode is formed in a single layer. The position detection device described in configuration A1. (Configuration A12) The Tx electrode is a comb-shaped coil having a configuration in which a plurality of teeth extending in a second direction are connected at one end of each tooth to a base extending in a first direction that intersects the second direction. A position detection device as described in configuration A11. (Configuration A13) The comb-shaped coil includes a first comb-shaped coil provided on one side of the folding axis of the display including the display image generation layer, and a second comb-shaped coil provided on the other side of the folding axis. The base of the first comb-shaped coil and the base of the second comb-shaped coil are connected by a connecting conductor that extends across the bending axis. The position detection device described in configuration A12. (Configuration A14) Includes support plate, The Tx electrode is formed in a single layer on one surface of the support plate. The position detection device described in configuration A1. (Configuration B1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A Tx electrode layer on which Tx electrodes that generate an alternating magnetic field are arranged, It includes an Rx electrode layer on which a plurality of Rx electrodes are arranged to detect the pen alternating magnetic field generated by the pen that has accumulated power by the aforementioned alternating magnetic field, The plurality of Rx electrodes are formed in a single layer on one surface of the display image generation layer. Position detection device. (Configuration B2) The aforementioned multiple Rx electrodes are composed of multiple coil-shaped electrodes that do not overlap each other. The position detection device described in configuration B1. (Composition B3) Each of the aforementioned multiple coil-shaped electrodes includes a transparent portion made of a transparent conductor. The position detection device described in configuration A2. (Configuration B4) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a predetermined repeating local pattern. The position detection device described in configuration B2. (Composition B5) Of the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first and second coil-shaped electrodes located at both ends include two parallel-extending mesh electrodes. The position detection device described in configuration B4. (Configuration B6) Of the plurality of coil-shaped electrodes, each coil-shaped electrode other than the first coil-shaped electrode and the second coil-shaped electrode has a connecting wire connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device described in configuration B5. (Composition B7) The first and second coil-shaped electrodes, located at both ends of the plurality of coil-shaped electrodes, each have an opaque metal conductor extending parallel to the mesh electrode. The position detection device described in configuration B4. (Configuration C1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A Tx electrode layer on which Tx electrodes that generate an alternating magnetic field are arranged, An Rx electrode layer is provided on which a plurality of Rx electrodes are arranged to detect the pen alternating magnetic field generated by the pen that has accumulated power due to the aforementioned alternating magnetic field, It includes a support plate provided at a position further away from the panel surface than the display image generation layer, The Tx electrode is formed in a single layer on one surface of the support plate. A position detection device including a position detection device. (Configuration C2) The Tx electrode is a comb-shaped coil having a configuration in which a plurality of teeth extending in a second direction are connected at one end of each tooth to a base extending in a first direction that intersects the second direction. A position detection device as described in configuration C1. (Configuration C3) The support plate comprises a first support plate provided on one side of the folding axis of the display including the display image generation layer, and a second support plate provided on the other side of the folding axis. The comb-shaped coil includes a first comb-shaped coil formed on one surface of the first support plate and a second comb-shaped coil formed on one surface of the second support plate. The base of the first comb-shaped coil and the base of the second comb-shaped coil are connected by a connecting conductor that extends across the bending axis. A position detection device as described in configuration C2. (Configuration D1) A position detection device for detecting the positions of a pen and a finger on a panel surface, A display image generation layer that generates a display image according to control by a drive circuit, It includes an integrated sensor layer disposed between the panel surface and the display image generation layer, The integrated sensor layer includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. At least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils. Position detection device. (Configuration D2) The integrated sensor layer is formed of two or three layers. A position detection device as described in configuration D1. (Configuration D3) The plurality of first coils are formed in the first layer, Each of the plurality of second electrodes has a configuration in which a portion formed in the first layer and a portion formed in a second layer different from the first layer are connected by a via conductor. A position detection device as described in configuration D1. (Configuration D4) The portion formed in the first layer of the second electrode is a connecting conductor that connects multiple portions formed in the second layer of the second electrode. The position detection device described in configuration D3. (Configuration D5) The aforementioned connecting conductor is a jumper wire or a bridge wire. The position detection device described in configuration D4. (Configuration D6) Each of the plurality of second coils has a configuration in which a portion formed in the first layer and a portion formed in the second layer are connected by via conductors. The position detection device described in configuration D3. (Configuration D7) The portion formed in the first layer of the second coil is a connecting conductor that connects multiple portions formed in the second layer of the second coil. The connecting conductor is formed in the same layer as at least a portion of the plurality of second electrodes. The position detection device described in configuration D4. (Configuration D8) The plurality of second electrodes and the plurality of second coils are arranged so as not to overlap when viewed in a planar manner. The position detection device described in configuration D6. (Configuration D9) The plurality of second electrodes and the plurality of second coils are arranged alternately when viewed in the second direction. A position detection device according to any one of the configurations D6 to D8. (Configuration D10) The plurality of first electrodes and the plurality of first coils are formed by the same wiring formed in the first layer. The position detection device described in configuration D3. (Configuration E1) A position detection device for detecting the positions of a pen and a finger on a panel surface, A display image generation layer that generates a display image according to control by a drive circuit, It includes an integrated sensor layer disposed between the panel surface and the display image generation layer, The integrated sensor layer includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. The plurality of second coils are each composed of a comb-shaped coil having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction. Position detection device. (Configuration E2) The integrated sensor layer is formed of two or three layers. A position detection device as described in configuration E1. (Configuration E3) The plurality of first coils are formed in the first layer, Each of the plurality of second electrodes has a configuration in which a portion formed in the first layer and a portion formed in a second layer different from the first layer are connected by a via conductor. A position detection device as described in configuration E1. (Configuration E4) The plurality of teeth have a configuration in which a portion formed in the first layer and a portion formed in the second layer are connected by a via conductor. A position detection device as described in configuration E1. (Configuration E5) The plurality of second electrodes and the plurality of teeth are arranged so as not to overlap when viewed in plan. The position detection device described in configuration E4. (Configuration E6) The plurality of second electrodes and the plurality of teeth are arranged alternately when viewed in the second direction. A position detection device as described in configuration E4 or E5. (Configuration E7) The plurality of first electrodes and the plurality of first coils are formed by the same wiring formed in the first layer. A position detection device as described in configuration E1. (Configuration F1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, Each of the first electrodes has a hollow portion and is arranged in a grid pattern, A plurality of second electrodes are disposed within the hollow portion of each of the plurality of first mesh electrodes, The device includes a plurality of first connecting wires formed in layers different from the plurality of first electrodes and the plurality of second electrodes, which connect two adjacent second electrodes in the first direction to each other, thereby constituting a plurality of first wirings extending in the first direction, The plurality of first wirings constitute a receiving coil for an EMR sensor that detects the position of the pen on the panel surface by electromagnetic induction. Position detection device. (Configuration F2) It has a second connecting wire that connects one end of the plurality of first wires to each other, Each of the aforementioned plurality of first wirings constitutes the teeth of a comb-shaped coil. The second connecting wire constitutes the base of the comb-shaped coil. A position detection device as described in configuration F1. (Configuration F3) The system further includes a plurality of third connecting wires formed in the same layer as the plurality of first electrodes, and comprising a plurality of second wirings extending in the second direction by interconnecting two adjacent first electrodes in a second direction intersecting the first direction, The plurality of second wires constitute a transmitting coil of an EMR sensor for detecting the position of the pen on the panel surface by electromagnetic induction. A position detection device as described in configuration F1 or F2. (Configuration F4) Multiple third electrodes arranged in a grid, The device includes a plurality of fourth connecting wires formed in a different layer from the plurality of first electrodes, the plurality of second electrodes, and the plurality of third electrodes, and which connect two adjacent third electrodes in the first direction to each other, thereby constituting a plurality of third wires extending in the first direction, The plurality of third wires constitute receiving electrodes for a touch sensor for detecting the position of a finger on the panel surface using a capacitive method. The plurality of second wires are also used as transmitting electrodes for the touch sensor. The position detection device described in configuration F3. (Configuration F5) It further includes a display image generation layer that generates a display image according to control by a drive circuit, The plurality of first electrodes, the plurality of second electrodes, and the first connecting wiring are arranged between the panel surface and the display image generation layer. A position detection device as described in configuration F1. (Configuration F6) The plurality of first electrodes and the plurality of second electrodes are mesh electrodes. The position detection device described in configuration F5. (Composition G1) A sensor used in conjunction with electronic equipment that detects the position of a pen and a finger on a panel surface, The electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, The aforementioned sensor is Displaced between the panel surface and the display image generation layer, The system includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. At least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils. Sensor. (Configuration H1) A sensor used in conjunction with electronic equipment that detects the position of a pen and a finger on a panel surface, The sensor includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. At least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils. Sensor. (Configuration I1) A sensor used in conjunction with electronic equipment that detects the position of a pen and a finger on a panel surface, The electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, The aforementioned sensor is Displaced between the panel surface and the display image generation layer, The system includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. The plurality of second coils are each composed of a comb-shaped coil having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction. Sensor. (Composition J1) A sensor used in conjunction with electronic equipment that detects the position of a pen and a finger on a panel surface, The sensor includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. The plurality of second coils are each composed of a comb-shaped coil having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction. Sensor. (Configuration K1) A sensor used in conjunction with electronic equipment that detects the position of a pen on a panel surface by electromagnetic induction, Each of the first electrodes has a hollow portion and is arranged in a grid pattern, A plurality of second electrodes are disposed within the hollow portion of each of the plurality of first mesh electrodes, The device includes a plurality of first connecting wires formed in layers different from the plurality of first electrodes and the plurality of second electrodes, which connect two adjacent second electrodes in the first direction to each other, thereby constituting a plurality of first wirings extending in the first direction, The plurality of first wirings constitute a receiving coil for an EMR sensor that detects the position of the pen on the panel surface by electromagnetic induction. Sensor. (Configuration L1) A display image generation layer that generates a display image according to control by a drive circuit, The system includes a sensor disposed between the panel surface and the display image generation layer, which is used to detect the position of a pen on the panel surface by electromagnetic induction, The sensor includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. At least a portion of each of the plurality of second electrodes is formed in the same layer as the plurality of first coils or the plurality of second coils. display. (Configuration M1) A display image generation layer that generates a display image according to control by a drive circuit, The system includes a sensor disposed between the panel surface and the display image generation layer, which is used to detect the position of a pen on the panel surface by electromagnetic induction, The sensor includes a touch sensor for detecting the position of a finger on the panel surface using a capacitive method, and an EMR sensor for detecting the position of a pen on the panel surface using electromagnetic induction. The touch sensor includes a plurality of first electrodes arranged in a first direction, and a plurality of second electrodes arranged in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged in the first direction and a plurality of second coils arranged in the second direction. The plurality of second coils are each composed of a comb-shaped coil having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction. display. (Configuration N1) A display image generation layer that generates a display image according to control by a drive circuit, The system includes a sensor disposed between the panel surface and the display image generation layer, which is used to detect the position of a pen on the panel surface by electromagnetic induction, Each of the first electrodes has a hollow portion and is arranged in a grid pattern, A plurality of second electrodes are disposed within the hollow portion of each of the plurality of first mesh electrodes, The device includes a plurality of first connecting wires formed in layers different from the plurality of first electrodes and the plurality of second electrodes, which connect two adjacent second electrodes in the first direction to each other, thereby constituting a plurality of first wirings extending in the first direction, The plurality of first wirings constitute a receiving coil for an EMR sensor that detects the position of the pen on the panel surface by electromagnetic induction. display. (Composition O1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, A second electrode layer is provided on the side opposite to the side where the first electrode layer is provided, with one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction, centered on the display image generation layer. A position detection device including a position detection device. (Configuration O2) An alternating magnetic field is emitted from the first electrode, The pen's alternating magnetic field, generated by the pen that has accumulated electrodes due to the aforementioned alternating magnetic field, is detected using the second electrode. A position detection device as described in configuration O1. (Composition O3) An integrated circuit that derives the coordinates of the pen based on the intensity at each intersection of the plurality of first coils and the plurality of second coils of the pen alternating magnetic field emitted by the pen in response to the alternating magnetic field, A position detection device according to configuration O2, including the configuration described above. (Composition O4) The one or more second electrodes are formed in a single layer on one surface of the display image generation layer. A position detection device as described in configuration O1. (Composition O5) The one or more second electrodes are composed of multiple coil-shaped electrodes that do not overlap each other. A position detection device as described in configuration O4. (Configuration O6) Each of the aforementioned multiple coil-shaped electrodes includes a transparent portion made of a transparent conductor. A position detection device as described in configuration O5. (Configuration O7) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a predetermined repeating local pattern. A position detection device as described in configuration O5. (Composition O8) Of the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first and second coil-shaped electrodes located at both ends include two parallel-extending mesh electrodes. A position detection device as described in configuration O7. (Composition O9) Of the plurality of coil-shaped electrodes, each coil-shaped electrode other than the first coil-shaped electrode and the second coil-shaped electrode has a connecting wire connecting the two mesh electrodes outside the active area where the display image is displayed. A position detection device as described in configuration O8. (Configuration O10) The first and second coil-shaped electrodes, located at both ends of the plurality of coil-shaped electrodes, each have an opaque metal conductor extending parallel to the mesh electrode. A position detection device as described in configuration O7. (Configuration O11) The one or more first electrodes are formed in a single layer. A position detection device as described in configuration O1. (Configuration O12) Each of the one or more first electrodes is a comb-shaped coil having a configuration in which a plurality of teeth extending in the second direction are connected at one end to a base extending in the first direction. A position detection device as described in configuration O11. (Composition O13) The comb-shaped coil includes a first comb-shaped coil provided on one side of the folding axis of the display including the display image generation layer, and a second comb-shaped coil provided on the other side of the folding axis. The base of the first comb-shaped coil and the base of the second comb-shaped coil are connected by a connecting conductor that extends across the bending axis. A position detection device as described in configuration O12. (Composition O14) Includes support plate, The one or more first electrodes are formed in a single layer on one surface of the support plate. A position detection device as described in configuration O1. (Composition P1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The invention includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, The one or more second electrodes are formed in a single layer on one surface of the display image generation layer. Position detection device. (Configuration P2) The one or more second electrodes are composed of multiple coil-shaped electrodes that do not overlap each other. The position detection device described in configuration P1. (Composition P3) Each of the aforementioned multiple coil-shaped electrodes includes a transparent portion made of a transparent conductor. The position detection device described in configuration P2. (Configuration P4) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a predetermined repeating local pattern. The position detection device described in configuration P2. (Configuration P5) Of the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first and second coil-shaped electrodes located at both ends include two parallel-extending mesh electrodes. The position detection device described in configuration P4. (Configuration P6) Of the plurality of coil-shaped electrodes, each coil-shaped electrode other than the first coil-shaped electrode and the second coil-shaped electrode has a connecting wire connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device described in configuration P5. (Configuration P7) The first and second coil-shaped electrodes, located at both ends of the plurality of coil-shaped electrodes, each have an opaque metal conductor extending parallel to the mesh electrode. The position detection device described in configuration P4. (Composition Q1) A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, A display image generation layer that generates a display image according to control by a drive circuit, A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, A second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, It includes a support plate provided at a position further away from the panel surface than the display image generation layer, The one or more first electrodes are formed on the support plate. Position detection device. (Configuration Q2) An alternating magnetic field is emitted from the first electrode, The pen's alternating magnetic field, generated by the pen that has accumulated electrodes due to the aforementioned alternating magnetic field, is detected using the second electrode. The position detection device described in configuration Q1. (Composition Q3) An alternating magnetic field is emitted from the aforementioned second electrode, The pen-based alternating magnetic field generated by the pen, which has accumulated electrodes due to the aforementioned alternating magnetic field, is detected using the first electrode. The position detection device described in configuration Q1. (Configuration Q4) Each of the one or more first electrodes is a comb-shaped coil having a configuration in which a plurality of teeth extending in the second direction are connected at one end to a base extending in the first direction. The position detection device described in configuration Q1. (Configuration Q5) The support plate comprises a first support plate provided on one side of the folding axis of the display including the display image generation layer, and a second support plate provided on the other side of the folding axis. The comb-shaped coil includes a first comb-shaped coil formed on one surface of the first support plate and a second comb-shaped coil formed on one surface of the second support plate. The base of the first comb-shaped coil and the base of the second comb-shaped coil are connected by a connecting conductor that extends across the bending axis. The position detection device described in configuration Q4. (Configuration Q6) The one or more first electrodes are formed in a single layer on one surface of the support plate. The one or more second electrodes are formed in a single layer on the other surface of the support plate. A position detection device according to any one of the configurations Q1 to Q3. (Composition Q7) The support plate further includes a plurality of pads formed on one of its surfaces, Each of the one or more first electrodes is connected to one of the plurality of pads by wiring within the same plane. Each of the one or more second electrodes is connected to one of the plurality of pads by a via conductor provided on the support plate. The position detection device described in configuration Q6. (Configuration Q8) The one or more first electrodes have a configuration in which a portion formed in a single layer on one surface of the support plate and a portion formed in a single layer on the other surface of the support plate are interconnected by via conductors provided on the support plate. The one or more second electrodes have a configuration in which a portion formed in a single layer on one surface of the support plate and a portion formed in a single layer on the other surface of the support plate are interconnected by via conductors provided on the support plate. A position detection device according to any one of the configurations Q1 to Q3. (Composition Q9) The support plate further includes a plurality of pads formed on one of its surfaces, Each of the one or more first electrodes is connected to one of the plurality of pads by wiring formed on one surface of the support plate. Each of the one or more second electrodes is connected to one of the plurality of pads by wiring formed on one surface of the support plate. The position detection device described in configuration Q8. (Configuration R1) A position detection device for detecting the positions of a pen and a finger on a panel surface, A display image generation layer that generates a display image according to control by a drive circuit, It includes a plurality of coil-shaped electrodes disposed between the panel surface and the display image generation layer, Each of the plurality of coil-shaped electrodes has a configuration in which one end of each of two conductors extending parallel to a first direction is connected by a connecting wire extending in a second direction intersecting the first direction. Of the two conductive elements constituting each of the plurality of coil-shaped electrodes, the one that extends over the area where the display image is shown when viewed in plan is composed of a mesh electrode or a transparent electrode. Position detection device. (Configuration R2) Each of the aforementioned multiple coil-shaped electrodes is formed in the shape of a Π. A position detection device as described in configuration R1. (Configuration R3) The plurality of coil-shaped electrodes are electrically isolated from each other. A position detection device as described in configuration R1. (Configuration R4) The plurality of coil-shaped electrodes are formed in a single layer. A position detection device as described in configuration R1. (Configuration R5) Of the two conductive materials constituting each of the plurality of coil-shaped electrodes, the one that extends over the area where the display image is shown when viewed in plan view, and the connecting wiring constituting each of the plurality of coil-shaped electrodes are made of an opaque plate-shaped conductor. A position detection device as described in configuration R1. (Configuration R6) When the plurality of coil-shaped electrodes are used as an EMR sensor to detect the position of a pen on the panel surface by electromagnetic induction, the other end of each of the plurality of coil-shaped electrodes is grounded, and when the plurality of coil-shaped electrodes are used as a touch sensor to detect the position of a finger on the panel surface by capacitance, a switch circuit is connected to each of the plurality of coil-shaped electrodes, A position detection device according to any one of the configurations R1 to R5, further comprising: (Configuration R7) Each of the aforementioned coil-shaped electrodes is used as a receiving coil for the EMR sensor and a receiving electrode for the touch sensor. One end of each of the aforementioned multiple coil-shaped electrodes is connected to a receiving circuit. The position detection device described in configuration R6. (Configuration R8) The transmitting coil of the EMR sensor, The transmitting electrode of the touch sensor, A position detection device according to configuration R7, further comprising the above. (Configuration S1) A sensor used in conjunction with electronic equipment that detects the position of a pen on a panel surface by electromagnetic induction, The electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The display image generation layer is located on the side opposite to the side where the first electrode layer is provided, and includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils are arranged in a second direction intersecting the first direction. Sensor. (Configuration T1) A sensor used in conjunction with electronic equipment that detects the position of a pen on a panel surface by electromagnetic induction, The electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The invention includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, The one or more second electrodes are formed in a single layer on one surface of the display image generation layer. Sensor. (Configuration V1) A sensor used in conjunction with electronic equipment that detects the position of a pen on a panel surface by electromagnetic induction, The aforementioned electronic device is A display image generation layer that generates a display image according to control by a drive circuit, It includes a support plate provided at a position further away from the panel surface than the display image generation layer, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The invention includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, The one or more first electrodes are formed on the support plate. Sensor. (Configuration W1) A sensor used in conjunction with electronic equipment that detects the position of a pen and a finger on a panel surface, The electronic device includes a display image generation layer that generates a display image according to control by a drive circuit, The sensor includes a plurality of coil-shaped electrodes arranged between the panel surface and the display image generation layer. Each of the plurality of coil-shaped electrodes has a configuration in which one end of each of two conductors extending parallel to a first direction is connected by a connecting wire extending in a second direction intersecting the first direction. Of the two conductive elements constituting each of the plurality of coil-shaped electrodes, the one that extends over the area where the display image is shown when viewed in plan is composed of a mesh electrode or a transparent electrode. Sensor. (Configuration X1) A display image generation layer that generates a display image according to control by a drive circuit, Includes a sensor used to detect the position of a pen on a panel surface by electromagnetic induction, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The display image generation layer is located on the side opposite to the side where the first electrode layer is provided, and includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils are arranged in a second direction intersecting the first direction. display. (Configuration Y1) A display image generation layer that generates a display image according to control by a drive circuit, Includes a sensor used to detect the position of a pen on a panel surface by electromagnetic induction, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The invention includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, The one or more second electrodes are formed in a single layer on one surface of the display image generation layer. display. (Configuration Z1) A display image generation layer that generates a display image according to control by a drive circuit, A sensor used to detect the position of a pen on a panel surface by electromagnetic induction, It includes a support plate provided at a position further away from the panel surface than the display image generation layer, The aforementioned sensor is A first electrode layer on which one or more first electrodes constituting a plurality of first coils arranged in a first direction are disposed, The invention includes a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged in a second direction intersecting the first direction are disposed, The one or more first electrodes are formed on the support plate. display. (Composition AA1) A display image generation layer that generates a display image according to control by a drive circuit, Includes a sensor used to detect the position of a pen on a panel surface by electromagnetic induction, The sensor includes a plurality of coil-shaped electrodes arranged between the panel surface and the display image generation layer. Each of the plurality of coil-shaped electrodes has a configuration in which one end of each of two conductors extending parallel to a first direction is connected by a connecting wire extending in a second direction intersecting the first direction. Of the two conductive elements constituting each of the plurality of coil-shaped electrodes, the one that extends over the area where the display image is shown when viewed in plan is composed of a mesh electrode or a transparent electrode. Display

[0113] As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to such embodiments, and it is needless to say that the present invention can be implemented in various modes without departing from the gist thereof.

Explanation of Reference Numerals

[0114] 1 Position detection system 2 Electromagnetic induction pen 3 Position detection device 3a Panel surface 30 Switch circuit 31 Sensor controller 32 Host processor 33 Structure 40 Cover film 41 Touch sensor 42 EMR sensor 42R Rx electrode layer 42T Tx electrode layer 43 Display 43a Active layer 43b Backplane 44 Cover glass 45, 45-1, 45-2 Support plate 46 Magnetic shield 47 Integrated sensor 50~53, 55, 56, 58, 50a, 50b, 57a, 57b Switch 60, 60a, 60b, 60c, 60d Tx circuit 61, 61a, 61b Rx circuit 62 Y-axis circuit 63 X-axis circuit 71~73 Adhesive layer S [[ID=)63]]80 Flexible printed circuit board 90 Inverting amplifier circuit 100 Tooth part 101 Base part 102 Pad 103 Connection conductor 104 Bend part 110 Connection Wiring 111,112 Conductors 120,121 mesh electrodes 122 Bridge Conductor 123,124 Jumper wiring 125 Connection Wiring 130 mesh conductor 131 Teeth 132 Linear conductor A Active Area BA folding shaft LCx, LCy loop coil R coiled electrode

Claims

1. A position detection device for detecting capacitive touch input and electromagnetic induction pen input on a panel surface, A display image generation layer that generates a display image according to control by a drive circuit, It includes an integrated sensor layer disposed between the panel surface and the display image generation layer, The integrated sensor layer includes a plurality of first electrodes arranged in a first direction, a plurality of second electrodes arranged in a second direction intersecting the first direction, and a plurality of third electrodes different from the plurality of second electrodes arranged in the second direction. When detecting the touch input, the detection is performed using the plurality of first electrodes and the plurality of second electrodes. When detecting the pen input, the detection is performed using the plurality of first electrodes and the plurality of third electrodes. Position detection device.

2. The integrated sensor layer is formed of two or three layers. The position detection device according to claim 1.

3. The plurality of first electrodes are formed in the first layer, Each of the plurality of third electrodes has a configuration in which a portion formed in the first layer and a portion formed in a second layer different from the first layer are connected by a via conductor. The position detection device according to claim 1.

4. Each of the plurality of second electrodes has a configuration in which a portion formed in the first layer and a portion formed in the second layer are connected by a via conductor. The position detection device according to claim 3.

5. The portion formed in the second layer of the third electrode is a connecting conductor that connects multiple portions formed in the first layer of the third electrode. The position detection device according to claim 4.

6. The plurality of second electrodes and the plurality of third electrodes are arranged so as not to overlap when viewed in a planar manner. The position detection device according to claim 1.

7. The plurality of second electrodes and the plurality of third electrodes are arranged alternately when viewed in the second direction. A position detection device according to any one of claims 6.

8. The plurality of third electrodes each constitute the plurality of teeth of a comb-shaped coil having a configuration in which a plurality of teeth extending in the first direction are connected at one end to a base extending in the second direction. The position detection device according to claim 1.

9. The plurality of first electrodes are used as transmitting electrodes for a touch sensor to detect the touch input and as transmitting electrodes for an EMR sensor to detect the pen input. The plurality of second electrodes constitute the receiving electrodes of the touch sensor. The plurality of third electrodes constitute the receiving electrodes of the EMR sensor. The position detection device according to claim 1.

10. It further includes a sensor controller, The aforementioned sensor controller When detecting the touch input, an alternating current is supplied to one first electrode selected from the plurality of first electrodes. When detecting the pen input, AC power with opposite phases is supplied to one first electrode selected from the plurality of first electrodes and to another first electrode selected from the plurality of first electrodes. The position detection device according to claim 9.

11. The system further includes a first switch which includes a plurality of selection terminals connected to one end of each of the plurality of first electrodes, and a common terminal connected to the sensor controller. When the sensor controller detects the touch input, it controls the first switch such that the selection terminal corresponding to the first electrode selected as the destination for the AC current supply is connected to the common terminal. The position detection device according to claim 10.

12. The system further includes a second switch which includes a plurality of selection terminals connected to one end of each of the plurality of first electrodes, and first and second common terminals, respectively, connected to the sensor controller. When the sensor controller detects the pen input, it controls the second switch such that the two selection terminals corresponding to the two first electrodes selected as the destinations for the AC current supply are connected to the first and second common terminals, respectively. The position detection device according to claim 10.

13. A sensor used in conjunction with electronic equipment that detects capacitive touch input and electromagnetic induction pen input on a panel surface, It is positioned between the panel surface and the display image generation layer, which generates the display image according to the control of the drive circuit. The device includes a plurality of first electrodes arranged in a first direction, a plurality of second electrodes arranged in a second direction intersecting the first direction, and a plurality of third electrodes different from the plurality of second electrodes arranged in the second direction. The touch input is detected using the plurality of first electrodes and the plurality of second electrodes. The pen input is detected using the plurality of first electrodes and the plurality of third electrodes. Sensor.

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