Position detection device

Abstract

To provide a position detection device that includes a foldable display and is compatible with EMR detection of the position of an electromagnetic induction pen.SOLUTION: A position detection device according to the present invention detects the position of a pen on a panel surface by electromagnetic induction action, said position detection device comprising a display image generation layer, a first electrode layer, a second electrode layer, and a support plate. One or more first electrodes are formed on the support plate and the one or more first electrodes are formed in a single layer on one surface of the support plate. One or more second electrodes are formed in a single layer on the other surface of the support plate. The device further includes a plurality of pads formed on the one surface of the support plate. Each of the one or more first electrodes is connected to one of the plurality of pads via wiring on the same surface, and each of the one or more second electrodes is connected to one of the plurality of pads via a via conductor provided in the support plate.SELECTED DRAWING: Figure 15

Description

Technical Field

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

Background Art

[0002] As one of the methods for detecting the position of an electromagnetic induction pen on a panel surface such as a tablet terminal, the EMR method is known. A position detection device using the EMR method has an EMR sensor including 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, an EMR sensor is generally arranged on the lower side of the display (the side far from the panel surface). Also, on the upper side of the display (the side close to the panel surface), a touch sensor for detecting the position of a finger on the panel surface is arranged.

[0003] In recent years, foldable displays (foldable displays) have emerged. Patent Documents 2 and 3 disclose examples of foldable displays.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, when a foldable display as disclosed in Patent Documents 2 and 3 is adapted to the position detection of an electromagnetic induction pen by the EMR method, the EMR sensor also needs to be configured to be foldable. However, an external EMR sensor as described in Patent Document 1 cannot meet such a requirement. This is because it is difficult to accurately position the wiring in the EMR sensor manufactured in a process separate from the display with respect to the folding axis of the display.

[0006] Therefore, one object of the present invention is to provide a position detection device and a sensor including a foldable display and corresponding to the position detection of an electromagnetic induction pen by the EMR method.

[0007] In addition, in a conventional EMR sensor, both the X coil and the Y coil have overlapping portions of wiring between adjacent coils. That is, both the X coil and the Y coil have a multilayer structure, and accordingly, the thickness of the structure including the EMR sensor and the display becomes large, so improvement has been required.

[0008] Therefore, another object of the present invention is to provide a position detection device and a sensor capable of realizing thinning of a structure including an EMR sensor.

Means for Solving the Problems

[0009] A position detection device according to a first aspect of the present invention is a position detection device that detects the position of a pen on a panel surface by electromagnetic induction, and includes a display image generation layer that generates a display image according to control by a drive circuit, and a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, and a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction on a side opposite to the side where the first electrode layer is provided with the display image generation layer as the center.

[0010] The position detection device according to the second aspect of the present invention is a position detection device that detects the position of a pen on a panel surface by electromagnetic induction, and includes a display image generation layer that generates a display image according to control by a drive circuit, a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, and a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction. The one or more second electrodes are formed in a single layer on one surface of the display image generation layer, and it is a position detection device.

[0011] The position detection device according to the third aspect of the present invention is a position detection device that detects the position of a pen on a panel surface by electromagnetic induction, and includes a display image generation layer that generates a display image according to control by a drive circuit, a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction, and a support plate provided at a position farther from the panel surface than the display image generation layer. The one or more first electrodes are formed on the support plate, and it is a position detection device.

[0012] The position detection device according to the fourth aspect of the present invention is a position detection device that detects the positions of a pen and a finger on a panel surface, and includes a display image generation layer that generates a display image according to control by a drive circuit, and 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 ends of two conductors extending parallel to each other along a first direction are connected by a connection wiring extending in a second direction intersecting the first direction. Among the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover the region where the display image is displayed when viewed in a planar manner are constituted by a mesh electrode or a transparent electrode, and it is a position detection device.

[0013] The sensor according to the first 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. The electronic device includes a display image generation layer that generates a display image according to the control by a drive circuit. The sensor includes a first electrode layer in which one or more first electrodes that constitute a plurality of first coils arranged side by side in a first direction are disposed, and a second electrode layer in which one or more second electrodes that constitute a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed on the side opposite to the side where the first electrode layer is provided with the display image generation layer as the center.

[0014] The sensor according to the second 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. The electronic device includes a display image generation layer that generates a display image according to the control by a drive circuit. The sensor includes a first electrode layer in which one or more first electrodes that constitute a plurality of first coils arranged side by side in a first direction are disposed, and a second electrode layer in which one or more second electrodes that constitute a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed. The one or more second electrodes are formed in one layer on one surface of the display image generation layer.

[0015] 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. The electronic device includes a display image generation layer that generates a display image according to the control by a drive circuit, and a support plate provided at a position farther from the panel surface than the display image generation layer. The sensor includes a first electrode layer in which one or more first electrodes that constitute a plurality of first coils arranged side by side in a first direction are disposed, and a second electrode layer in which one or more second electrodes that constitute a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed. The one or more first electrodes are formed on the support plate.

[0016] The sensor according to the fourth aspect of the present invention is a sensor used together with an electronic device that detects the positions 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 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 ends of two conductors each extending parallel along a first direction are connected by a connection wiring extending in a second direction intersecting the first direction. Among the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover a region where the display image is displayed when viewed in a plane are constituted by a mesh electrode or a transparent electrode.

Advantages of the Invention

[0017] According to the first to fourth 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

[0018]

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MODE FOR CARRYING OUT THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0020] FIG. 1 is a diagram showing the configuration of a position detection system 1 according to the first embodiment of the present invention. As shown in the figure, the position detection system 1 includes an electromagnetic induction pen 2 and a position detection device 3. Among these, the electromagnetic induction pen 2 is a pen corresponding to position detection by the EMR method, and is configured to have a resonance circuit including a coil and a capacitor inside. The EMR method is a method of deriving the position of the electromagnetic induction pen 2 by the electromagnetic induction action between the EMR sensor 42 and the electromagnetic induction pen 2 described later, and involves the exchange of alternating magnetic fields in both directions between the EMR sensor 42 and the electromagnetic induction pen 2, and the transmission of an alternating magnetic field in one direction from the electromagnetic induction pen 2 to the EMR sensor 42. In the present embodiment, an example in which an alternating magnetic field is exchanged in both directions between the EMR sensor 42 and the electromagnetic induction pen 2 will be taken up and the description will continue.

[0021] The position detection device 3 is a computer (electronic device) compatible with pen input by the EMR method and touch input by the capacitance method, and includes a switch circuit 30, a sensor controller 31, a host processor 32, and a structure 33. The structure 33 includes a cover film 40, a touch sensor 41, an EMR sensor 42, and a display 43. Note that the arrangement order of the cover film 40, the touch sensor 41, the EMR sensor 42, and the display 43 shown in FIG. 1 is for convenience, and the actual arrangement of these will be described later with reference to FIG. 5. In a typical example, the position detection device 3 is a tablet terminal or a notebook computer compatible with pen input and touch input.

[0022] First, 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 composed of, for example, polyethylene terephthalate. The reason for not using a cover glass as shown in FIG. 18 described later as a member for protecting the internal structure of the structure 33 is to enable bending at the illustrated bending axis BA. The structure 33 is configured to be able to be valley-folded at the bending axis BA, and thus, the display 43 is a foldable display. The type of the display method of the display 43 is not particularly limited, and may be a liquid crystal display or an organic EL display.

[0023] The surface of the cover film 40 is flat and constitutes a panel surface 3a that also serves as the touch surfaces of the touch sensor 41 and the EMR sensor 42, and the display surface of the display 43. The user of the position detection device 3 performs pen input by sliding the pen tip of the electromagnetic induction pen 2 on this panel surface 3a, and performs touch input by sliding his or her finger.

[0024] The touch sensor 41 is a sensor including a plurality of Tx electrodes which are linear electrodes extending in the x direction and juxtaposed in the y direction, and a plurality of Rx electrodes which are linear electrodes extending in the y direction and juxtaposed in the x direction. Each of the plurality of Tx electrodes and each of the plurality of Rx electrodes are connected to the sensor controller 31 via the switch circuit 30. The EMR sensor 42 is a sensor including a plurality of Tx coils and a plurality of Rx coils. Although details will be described later with reference to FIGS. 6 to 8, in the present embodiment, the plurality of Tx coils are constituted by one comb-shaped coil (Tx electrode), and the plurality of Rx coils are shared with the plurality of Rx electrodes of the touch sensor 41. Each of the plurality of Tx coils and each of the plurality of Rx coils are connected to the sensor controller 31 via the switch circuit 30.

[0025] The switch circuit 30 is an integrated circuit including a switch group provided between the sensor controller 31 and each electrode (including coils) in the touch sensor 41 and the EMR sensor 42. The switching of the switch group constituting the switch circuit 30 is executed by the sensor controller 31. Details of the switch circuit 30 will be described in detail later with reference to FIGS. 7 and 8.

[0026] The sensor controller 31 is an integrated circuit having a function of deriving the position of a finger in the panel surface 3a using the touch sensor 41 and a function of deriving the position of the electromagnetic induction pen 2 in the panel surface 3a using the EMR sensor 42. Regarding the electromagnetic induction pen 2, the sensor controller 31 is also configured to have a function of receiving data transmitted by the electromagnetic induction pen 2. The position derived and the data received by the sensor controller 31 are sequentially supplied to the host processor 32.

[0027] To briefly explain the process 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 plurality of Tx electrodes and receives it at each of the plurality of Rx electrodes, thereby obtaining the intensity of the received touch detection signal for each intersection of the plurality of Rx electrodes and the plurality of Tx electrodes. Then, based on the distribution of the intensities thus obtained, the sensor controller 31 derives the position of the finger within the panel surface 3a.

[0028] Next, regarding the position of the electromagnetic induction pen 2, the sensor controller 31 sequentially supplies an alternating current to the plurality of Tx coils. An alternating magnetic field is sent out from the Tx coil to which the alternating current is supplied. When the coil constituting the resonance circuit of the electromagnetic induction pen 2 enters this alternating magnetic field, an electromotive force is generated at both ends thereof, and the capacitor constituting the resonance circuit together with the coil is charged. Thereafter, when the sensor controller 31 stops supplying the alternating current, an alternating magnetic field (hereinafter referred to as "pen alternating magnetic field") is sent out from the coil of the electromagnetic induction pen 2 by the electric power stored in the capacitor. The sensor controller 31 receives the signal (hereinafter referred to as "pen signal") generated in each Rx coil by this pen alternating magnetic field and obtains its intensity, thereby deriving the position of the electromagnetic induction pen 2 within the panel surface 3a. This process will be described in detail again later with reference to FIGS. 2 to 4.

[0029] Finally, regarding the data transmitted by the electromagnetic induction pen 2, the data to be transmitted may include a pen pressure value indicating the pressure applied to the pen tip, on / off information indicating the state of the switch provided on the surface of the housing, a pen ID stored in the built-in memory, and the like. The electromagnetic induction pen 2 is configured such that the resonance frequency of the resonance circuit changes according to the content of these data. When the resonance frequency of the resonance circuit changes, the frequency of the pen signal received by the sensor controller 31 also changes. The sensor controller 31 receives the data transmitted by the electromagnetic induction pen 2 by detecting this change in frequency by demodulating the received pen signal.

[0030] The host processor 32 is the central processing unit of the position detection device 3 and serves to execute the operating system and various applications of the position detection device 3 by executing a program read from a memory (not shown). The processes executed by the host processor 32 according to the program include a process of generating a video signal and supplying it to the display 43, and various processes performed using the position and data supplied from the sensor controller 31. The various processes performed using the position and data include, for example, moving a cursor displayed on the display surface, generating stroke data indicating the trajectory of the electromagnetic induction pen 2 within the touch surface. Regarding the stroke data among these, the host processor 32 also performs processes such as rendering and displaying the generated stroke data, generating and recording digital ink including the generated stroke data, and transmitting the generated digital ink to an external device according to a user's instruction.

[0031] FIGS. 2 to 4 are diagrams for explaining the principle of deriving the position of the electromagnetic induction pen 2. These are explanatory diagrams of the principle and do not necessarily match the configurations of the switch circuit 30, the sensor controller 31, and the EMR sensor 42 according to the present embodiment. Hereinafter, the principle of deriving the position of the electromagnetic induction pen 2 will be described in detail with reference to these figures.

[0032] Here, the plurality of loop coils LCx shown in FIGS. 2 to 4 are coils that each extend in the y direction and are arranged side by side in the x direction, and the plurality of loop coils LCy are coils that each extend in the x direction and are arranged side by side in the y direction. In the example of FIG. 2, the loop coils LCx and LCy each correspond to both the Rx coil and the Tx coil described above. On the other hand, in the examples of FIGS. 3 and 4, the loop coil LCx corresponds to the Rx coil, and the loop coil LCy corresponds to the Tx coil. Note that each figure shows only five loop coils LCx and LCy for simplicity of explanation, but in general, 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 displayed) of the display 43, is indicated by a dashed line.

[0033] First, referring to FIG. 2, the switch circuit 30 according to this example is configured to include switches 50 to 53, and the sensor controller 31 is configured to include a Y-axis circuit 62 and an X-axis circuit 63.

[0034] The switch 50 is a multi-pole single-pole switch that includes a plurality of selection terminals each connected to one end of each loop coil LCy and a common terminal connected to the common terminal of the switch 52. The other end of each loop coil LCy is grounded. The switch 52 is a double-pole single-pole switch that includes a selection terminal connected to the output end of the Y-axis circuit 62 via a buffer, a selection terminal connected to the input end of the Y-axis circuit 62 via a buffer, and a common terminal connected to the common terminal of the switch 50.

[0035] Also, the switch 51 is a multi-pole single-pole switch that includes a plurality of selection terminals each connected to one end of each loop coil LCx and a common terminal connected to the common terminal of the switch 53. The other end of each loop coil LCx is grounded. The switch 53 is a double-pole single-pole switch that includes a selection terminal connected to the output end of the X-axis circuit 63 via a buffer, a selection terminal connected to the input end of the X-axis circuit 63 via a buffer, and a common terminal connected to the common terminal of the switch 51.

[0036] As an example according to FIG. 2, the sensor controller 31 first switches the switch 52 to the input terminal side of the Y-axis circuit 62, the switch 53 to the output terminal side of the X-axis circuit 63, and the switch 51 to any one of the loop coils LCx, as shown in the figure. Next, the sensor controller 31 starts the output of an alternating current from the X-axis circuit 63. As a result, an alternating magnetic field is sent out from the loop coil LCx connected to the X-axis circuit 63, and that loop coil LCx functions as a Tx coil. After a predetermined time has elapsed since the start of the output, the sensor controller 31 stops the output of the alternating current and controls the switch 50 so that any one of the loop coils LCy is connected to the input terminal of the Y-axis circuit 62. Then, the intensity of the pen signal (intensity of the pen alternating magnetic field) input to the Y-axis circuit 62 in that state is acquired. 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 intensity of the pen signal for each loop coil LCy by executing a series of processes from the output of the alternating current to the acquisition of the intensity of the pen signal as described above for each loop coil LCy. The table shown adjacent to the Y-axis circuit 62 in FIG. 2 shows an example of the intensity of the pen signal thus acquired. The sensor controller 31 derives the Y coordinate of the electromagnetic induction pen 2 based on the acquired distribution of the intensity in the Y direction.

[0037] Next, the sensor controller 31 swaps X and Y and performs the same processing as above. That is, the switch 53 is switched to the input end side of the X-axis circuit 63, the switch 52 is switched to the output end side of the Y-axis circuit 62, and the switch 50 is switched to one of the loop coils LCy sides, respectively. Next, the sensor controller 31 starts outputting an alternating current from the Y-axis circuit 62, and after a predetermined time has elapsed since the start of the output, stops the output of the alternating current and controls the switch 51 so that one of the loop coils LCx is connected to the input end of the X-axis circuit 63. Then, the intensity of the pen signal input to the X-axis circuit 63 in that state is acquired. The sensor controller 31 acquires the intensity of the pen signal for each loop coil LCx by executing a series of processes from the output of the alternating current as described above to the acquisition of the intensity of the pen signal for each loop coil LCx. The table shown next to the X-axis circuit 63 in FIG. 2 shows an example of the intensity of the pen signal thus acquired. The sensor controller 31 derives the X coordinate of the electromagnetic induction pen 2 based on the acquired distribution of the intensity in the X direction.

[0038] As described above, the sensor controller 31 according to the example of FIG. 2 individually obtains the X coordinate and the Y coordinate based on the distributions in the X direction and the Y direction, respectively. Then, the position of the electromagnetic induction pen 2 is derived by combining the two obtained coordinates.

[0039] Next, referring to FIG. 3, this example is different from the example shown in FIG. 2 in that the switch circuit 30 does not have the switches 52 and 53, and the sensor controller 31 has the Tx circuit 60 and the Rx circuit 61 instead of the Y-axis circuit 62 and the X-axis circuit 63.

[0040] The switch 50 is the same as the switch 50 in the example of FIG. 2 except that the common terminal is connected to the output end of the Tx circuit 60 via a buffer. The switch 51 is also the same as the switch 51 in the example of FIG. 2 except that the common terminal is connected to the input end 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 of FIG. 2.

[0041] The sensor controller 31 according to the example of FIG. 3 starts outputting an alternating current from the Tx circuit 60 with the switch 50 switched to any one of the loop coils LCy. As a result, an alternating magnetic field is sent out from the loop coil LCy connected to the Tx circuit 60, and that loop coil LCy functions as a Tx coil. After a predetermined time has elapsed since the start of the output, the sensor controller 31 stops outputting the alternating current and controls the switch 51 so that any one of the loop coils LCy is connected to the Rx circuit 61. Then, the intensity of the pen signal (intensity of the pen alternating magnetic field) input to the Rx circuit 61 in that state is acquired. As a result, the loop coil LCx connected to the Rx circuit 61 functions as an Rx coil. The sensor controller 31 executes this process for all combinations of the loop coils LCy and LCx, thereby acquiring the intensity of the pen signal at each intersection of the loop coil LCy and the loop coil LCx. The table shown next to the Rx circuit 61 in FIG. 3 shows an example of the intensity of the pen signal 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 intensity of the pen signal.

[0042] Next, referring to FIG. 4, the switch circuit 30 according to this example is different from the switch circuit 30 shown in FIG. 3 in that it does not have the switch 51. One end of each loop coil LCx is connected to the input end of the Rx circuit 61 without passing through the switch 51. Although not shown, the Rx circuit 61 according to the example of FIG. 4 incorporates a reception circuit equal in number to the loop coils LCx.

[0043] The processing performed by the sensor controller 31 according to the example of FIG. 4 is basically the same as the processing performed by the sensor controller 31 according to the example of FIG. 3. However, after sending out the alternating magnetic field from the loop coil LCy, it is different from the processing performed by the sensor controller 31 according to the example of FIG. 3 in that the intensities of the pen signals input to the Rx circuit 61 through each loop coil LCx are acquired all at once. The sensor controller 31 executes this processing for each loop coil LCy, thereby acquiring the intensity of the pen signal (intensity of the pen alternating magnetic field) for each intersection of the loop coil LCy and the loop coil LCx. The table shown adjacent to the Rx circuit 61 in FIG. 4 shows an example of the intensity of the pen signal 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 intensity of the pen signal.

[0044] As described above, the principle of deriving the position of the electromagnetic induction pen 2 has been illustrated and explained by exemplifying three types of principles. The position detection device 3 according to the present embodiment is configured to derive the position of the electromagnetic induction pen 2 by using the principle shown in FIG. 4 among these principles. Next, the layer structure of the structure 33 according to the present embodiment will be described.

[0045] FIG. 5 is a diagram showing the layer structure of the structure 33. As shown in the figure, the structure 33 includes, 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 a touch sensor 41, an Rx electrode layer 42R, a display image generation layer 43a, and a backplane 43b among these. The cover film 40 and the Rx electrode layer 42R are adhered by an adhesive layer 70, the backplane 43b and the support plate 45 are adhered by an adhesive layer 71, and the support plate 45 and the Tx electrode layer 42T formed on its surface and the magnetic shield 46 are adhered by an adhesive layer 72.

[0046] The Rx electrode layer 42R is the layer where the Rx coil of the EMR sensor 42 is disposed. In the present embodiment, it is also configured to include the touch sensor 41. Details of the Rx electrode layer 42R will be described in detail later with reference to FIG. 8.

[0047] The Tx electrode layer 42T is the layer where 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 on the lower surface of the support plate 45. Further details of the Tx electrode layer 42T will be described in detail later with reference to FIGS. 6 and 7.

[0048] The display image generation layer 43a is a layer that plays a role of generating a display image according to the control of the drive circuit in the backplane 43b. When the display 43 is a liquid crystal display, the display image generation layer 43a includes liquid crystals configured to be able to control the polarization direction for each pixel. When the display 43 is an organic EL display, the display image generation layer 43a includes organic materials configured to be able to control the light emission and extinction for each pixel. The backplane 43b includes a drive circuit that drives the liquid crystals or organic materials in the display image generation layer 43a according to the video signal supplied from the host processor 32.

[0049] The support plate 45 is a plate-shaped member provided to protect the display 43 from impacts. "plate PT" described in FIG. 7 of Patent Document 2 and "supporter SP" described in FIG. 7 of Patent Document 3 are examples of such a support plate. The support plate 45 is composed of a rigid substrate having low conductivity and rigidity (for example, a glass epoxy substrate such as FR4 (Flame Retardant Type 4)). The support plate 45 is made of a material with low conductivity to avoid affecting the electromagnetic induction used by the EMR sensor 42. Further, the support plate 45 is provided with a configuration for realizing bending while maintaining durability. This configuration may be, for example, grooves such as "grooves H" described in Patent Document 2, or a plurality of holes arranged along the bending axis BA. Thereby, the support plate 45 is configured to be bendable along the illustrated bending axis BA.

[0050] FIG. 6 is a diagram showing 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-shaped coil") formed by connecting one ends of a plurality of tooth portions 100 extending in the x direction to a base portion 101 extending in the y direction is formed in a single layer on the lower surface of the support plate 45. When providing the Tx coil or Rx coil of the EMR sensor 42 separately from the Tx electrode or Rx electrode constituting the touch sensor 41, it is preferable that the Tx coil or Rx coil is a comb-shaped coil as in the Tx electrode layer 42T of FIG. 6. Each tooth portion 100 is arranged at equal intervals in the y direction. At the other end of each tooth portion 100, a pad 102 is provided which is connected to a connector terminal provided on the surface of the flexible printed circuit board 80 shown in FIG. 5 by crimping. Each pad 102 is arranged side by side along one side of the support plate 45 extending in the y direction. Although FIG. 6 shows an example in which the number of tooth portions 100 is 16, this is merely illustrative, and the number of tooth portions 100 is not limited to 16.

[0051] As shown in FIG. 6, the arrangement of the respective parts constituting the Tx electrode layer 42T is determined such that the configuration arranged across the bending axis BA is only the base portion 101. Thereby, when the structure 33 is bent along the bending axis BA, it is possible to minimize the possibility of disconnection occurring in the Tx electrode layer 42T.

[0052] The symbols "T" shown in FIG. 6 0 " to "T" 11 " represent the individual Tx coils formed by the comb-shaped coils in the Tx electrode layer 42T. That is, the comb-shaped coils in the Tx electrode layer 42T are configured to be able to realize 12 Tx coils T 0 ~T 11 . Hereinafter, this point will be described in detail with reference to FIG. 7.

[0053] FIG. 7 is a diagram showing the electrical configuration of the Tx electrode layer 42T. The switch circuit 30 according to the present embodiment is configured to have a switch 55 for each tooth portion 100. Each switch 55 is a three-pole single-pole switch, and its common terminal is connected to the other end of the corresponding tooth portion 100. Also, the second selection terminal of each switch 55 is connected to the release end.

[0054] The Tx circuit 60 is configured to be able to output an alternating current Tx and an alternating current Tx_inv obtained by inverting the phase of the alternating current Tx. The first selection terminals of the respective switches 55 are commonly connected to the output terminal of the alternating current Tx of the Tx circuit 60, and the third selection terminals are commonly connected to the output terminal of the alternating current Tx_inv of the Tx circuit 60.

[0055] When the sensor controller 31 sends out an alternating magnetic field from the Tx electrode layer 42T, first, it selects any one tooth portion 100, switches the two switches 55 corresponding to the two tooth portions 100 adjacent to one side thereof to the first selection terminal side, and switches the two switches 55 corresponding to the two tooth portions 100 adjacent to the other side thereof to the third selection terminal side. For the other switches 55, the sensor controller 31 sets the state where the second selection terminal is selected. In FIG. 7, in the figure, "T" 5The state where the sensor controller 31 has selected the tooth portion 100 located at the position indicated by "」" is shown.

[0056] After performing the switching of each switch 55 as described above, the sensor controller 31 starts outputting the alternating currents Tx and Tx_inv from the Tx circuit 60. Then, two tooth portions 100 adjacent to one side of the selected tooth portion 100 (in the example of FIG. 7, the tooth portions 100 at the positions indicated by "T 3 」「T 4 」) have the alternating current Tx flowing through them, and two tooth portions 100 adjacent to the other side of the selected tooth portion 100 (in the example of FIG. 7, the tooth portions 100 at the positions indicated by "T 6 」「T 7 」) have the alternating current Tx_inv flowing through them. Thus, a virtual loop coil centered on the tooth portion 100 selected by the sensor controller 31 is formed, and an alternating magnetic field is sent out from this virtual loop coil. The Tx coil in the Tx electrode layer 42T is constituted by the virtual loop coil thus formed.

[0057] FIG. 8 is a diagram showing the planar configuration and electrical configuration of the Rx electrode layer 42R. Here, the Rx electrode layer 42R has a two-layer structure and has another layer in addition to the layer shown in FIG. 8. The Tx electrode (not shown) of the touch sensor 41 is formed in this other layer. Hereinafter, the description will continue focusing on the layer shown in FIG. 8.

[0058] As shown in FIG. 8, the Rx electrode layer 42R has a configuration in which N + 1 coil-shaped electrodes R 0 ~R N that respectively constitute the Rx coil of the EMR sensor 42 and the Rx electrode of the touch sensor 41 are juxtaposed in the x direction. In the following description, when there is no need to particularly distinguish the coil-shaped electrodes R 0 ~R N from each other, they may be collectively referred to as "coil-shaped electrode R". Each coil-shaped electrode R is arranged side by side in the x direction so as not to overlap with each other.

[0059] Each coil-shaped electrode R is composed of a U-shaped (Π-shaped) conductor having a configuration in which one end of each of two conductors 111 and 112 extending parallel along the y direction is connected by a connection wiring 110 extending in the x direction. Among these, the connection wiring 110 extends outside the active area A and is composed of an opaque plate-shaped conductor. When sharing the Tx electrode or Rx electrode constituting the touch sensor 41 and the Tx coil or Rx coil of the EMR sensor 42, it is preferable to use a U-shaped (Π-shaped) conductor like the coil-shaped electrode R in FIG. 8. This is because if the coil-shaped electrode R is constituted by the above-described comb-shaped coil, since it constitutes one large conductor as a whole, the wiring capacitance becomes too large, making it difficult to function as the Tx electrode or Rx electrode of the touch sensor 41. On the other hand, if the coil-shaped electrode R is constituted by a U-shaped (Π-shaped) conductor, since each coil-shaped electrode R is in a state of being electrically separated from each other, such a problem does not occur. Further, by forming each coil-shaped electrode R in a U-shaped (Π-shaped), as illustrated in FIG. 8, it becomes possible to form each coil-shaped electrode R so as not to overlap each other. By doing so, it also becomes possible to form the Rx electrode layer 42R and the Rx electrode of the touch sensor 41 in one layer.

[0060] Among the conductors 111 and 112 of each coil-shaped electrode R, those extending so as to cover the inside of the active area A are constituted by a mesh electrode having a repetition of a predetermined local pattern (the portion represented by the intersecting thin lines in FIG. 8). On the other hand, among the conductors 111 and 112 of each coil-shaped electrode R, those extending only outside the active area A are constituted by an opaque plate-shaped conductor similar to the connection wiring 110. In the example of FIG. 8, among the N coil-shaped electrodes R 0 ~R N the coil-shaped electrodes R located at both ends 0 and the coil-shaped electrode R N except for the coil-shaped electrodes R 1 ~R N-1 the conductors 111 and 112 of all extend so as to cover the inside of the active area A and are constituted by a mesh electrode. The coil-shaped electrode R 0The conductor 112 (coil electrode R 1 the conductor closest to the coil electrode R N Conductor 111 (coil electrode R N-1 The conductor closest to the active area A is also extended to cover the active area A and is made of a mesh electrode. 0 The conductor 111 and the coil electrode R N The conductor 112 extends only outside the active area A and is made of an opaque metal conductor.

[0061] Of the conductors 111, 112 of each coil electrode R, those that extend into the active area A are made of mesh electrodes in order to minimize the effect on the visibility of the image displayed by the display 43. In order to reduce variations in visibility in the active area A, a dummy mesh electrode may be formed in the region between the conductors 111, 112. Instead of the mesh electrode, a transparent electrode such as ITO (indium tin oxide) may be used.

[0062] The switch circuit 30 according to this embodiment is configured to have a switch 56 for each coiled electrode R. Each switch 56 is configured by a double-throw single-pole switch having a selection terminal connected to one end of the corresponding coiled electrode R, a selection terminal grounded, and a common terminal connected to the other end of the corresponding coiled electrode R. In addition, the Rx circuit 61 has an inverting amplifier circuit 90 for each coiled electrode R, and one end of each coiled electrode R is connected to the selection terminal of the corresponding switch 56 as well as to the input terminal of the corresponding inverting amplifier circuit 90.

[0063] When the sensor controller 31 uses each coil-shaped electrode R as the Rx coil of the EMR sensor, the sensor controller 31 switches each switch 56 to the grounded selection terminal side. As a result, 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. Therefore, 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.

[0064] 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 side 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 a state occurs in which the linear electrode is connected to each inverting amplifier circuit 90. Therefore, the sensor controller 31 can derive the position of a finger within the panel surface 3a by performing the same process as the process described with reference to FIG. 1.

[0065] As described above, according to the position detection system 1 according to the present embodiment, since the Rx electrode layer 42R is disposed on the side opposite to the side where the Tx electrode layer 42T is provided with the display image generation layer as the center, one side (the Rx electrode layer 42R in the present embodiment) is incorporated into the display 43 together with the touch sensor 41 (therefore, in a state where precise positioning with respect to the folding axis BA is possible), and only the other side (the Tx electrode layer 42T in the present embodiment) can be folded. In the present embodiment, this device is such that the Tx electrode layer 42T is formed in a single layer, and further, the configuration disposed across the folding axis BA is only one wiring (specifically, the base 101). If the configuration disposed across the folding axis BA is of this degree, even if it is difficult to precisely determine the positions of the respective wirings in the Tx electrode layer 42T with respect to the folding axis BA, the Tx electrode layer 42T can be made to correspond to folding. Therefore, according to the position detection system 1 according to the present embodiment, it can be said that it is possible to provide a position detection device including a foldable display and corresponding to the position detection of an electromagnetic induction pen by the EMR method.

[0066] In the present embodiment, an example in which the Tx electrode layer 42T is configured by a comb-shaped coil has been described, but the Rx electrode layer 42R can also be configured by a similar comb-shaped coil. Further, the Tx electrode layer 42T can be configured by a plurality of coil-shaped electrodes arranged so as not to overlap each other. In this case, if the positions of the respective coil-shaped electrodes can be determined so that the folding axis BA is included in the region without wiring between the coil-shaped electrodes, then do so. If the region without wiring between the coil-shaped electrodes is narrow and such positioning is difficult, the positions of the respective coil-shaped electrodes may be determined so that a wiring corresponding to the connection wiring 110 shown in FIG. 8 is disposed across the folding axis BA.

[0067] FIG. 9 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the first modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that the support plate 45 is divided into two support plates 45-1 and 45-2 with the folding axis BA as a boundary.

[0068] FIG. 10 is a diagram showing the planar configuration of the Tx electrode layer 42T according to this modification. As also shown in the figure, in this modification, since it is necessary to dispose the Tx electrode layer 42T across the surfaces of the two divided support plates 45-1 and 45-2, a bending portion 104 formed of a flexible member or structure is provided between the support plates 45-1 and 45-2, and a connection conductor 103 extending across the folding axis BA is formed on its surface. The connection conductor 103 electrically connects the portions of the base portions 101 provided on the support plates 45-1 and 45-2, respectively, and is preferably formed of a material or structure that is less likely to break due to bending operations compared to the base portion 101 and the tooth portion 100. By adopting the above configuration, it is also possible to provide a position detection device according to this modification that includes a foldable display and supports the position detection of an electromagnetic induction pen using the EMR method.

[0069] FIG. 11 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the second modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the first modification in that it does not have the adhesive layer 72 and the magnetic shield 46, and the Tx electrode layer 42T is disposed on the upper surfaces of the support plates 45-1 and 45-2. Thus, when the adhesive layer 72 and the magnetic shield 46 are not provided, it is preferable to dispose the Tx electrode layer 42T on the upper surfaces of the support plates 45-1 and 45-2 instead of the lower surfaces.

[0070] FIG. 12 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the third modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that the positions of the Tx electrode layer 42T and the Rx electrode layer 42R are interchanged. In this modification, the touch sensor 41 is included in the Tx electrode layer 42T. Thus, the Tx electrode layer 42T may be provided in the display 43, and the Rx electrode layer 42R may be provided on the surface of the support plate 45.

[0071] FIG. 13 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the fourth modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the third modification in that the Rx electrode layer 42R is formed on the upper surface of the support plate 45. However, the Rx electrode layer 42R according to this modification is crimped to the connector terminals provided on the surface of the flexible printed circuit board 80 on the lower surface of the support plate 45, similar to the Rx electrode layer 42R according to the third modification. To achieve this, the structure 33 according to this modification has a plurality of pads for crimping on the lower surface of the support plate 45, and each Rx coil constituting the Rx electrode layer 42R is connected to each of the plurality of pads by via conductors (not shown). Thus, the Rx electrode layer 42R may be connected to the flexible printed circuit board 80 on the surface opposite to the surface of the support plate 45 on which it is formed.

[0072] FIG. 14 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the fifth modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that the Rx electrode layer 42R is provided in the same layer as the backplane 43b instead of the touch sensor 41. In this way, the Rx electrode layer 42R may be provided in the same layer as the backplane 43b. In this case, each Rx coil is extended so as to avoid the pixel driving elements and wirings originally arranged in the backplane 43b. Although not shown, for example, the Tx electrode layer 42T according to the third modification shown in FIG. 12 may also be provided in the same layer as the backplane 43b, similarly to the Rx electrode layer 42R according to this modification.

[0073] Next, the position detection system 1 according to the second embodiment of the present invention will be described. The position detection system 1 according to the present embodiment is different from the position detection system 1 according to the first embodiment in that the Rx electrode layer 42R is disposed on the lower surface of the support plate 45 and the Tx electrode layer 42T is disposed on the upper surface of the support plate 45. Since other points are the same as those of the position detection system 1 according to the first embodiment, the description will continue focusing on the differences from the position detection system 1 according to the first embodiment below.

[0074] FIG. 15 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the present embodiment. As shown in the figure, in the position detection device 3 according to the present embodiment, the Rx electrode layer 42R is disposed on the lower surface of the support plate 45, and the Tx electrode layer 42T is disposed 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 each formed in one layer. Specifically, each of the Rx coil and the Tx coil may be configured by a comb-shaped coil similar to that described with reference to FIGS. 6 and 7, or a plurality of coils arranged so as not to overlap each other.

[0075] A plurality of pads that are crimped to the connector terminals of the flexible printed circuit board 80 are provided on the lower surface of the support plate 45 for both the Rx coil and the Tx coil. Each Rx coil in the Rx electrode layer 42R is connected to a corresponding pad by wiring in the same plane (not shown), and each Tx coil in the Tx electrode layer 42T is connected to a corresponding pad by a via conductor (not shown).

[0076] As described above, according to the position detection system 1 according to the present embodiment, since each Rx coil in the Rx electrode layer 42R and each Tx coil in the Tx electrode layer 42T are formed in one layer on each surface of the support plate 45, even if it is difficult to strictly determine the position of the wiring in each layer with respect to the bending axis BA compared to the case of forming in multiple layers, it is possible to suppress the occurrence of disconnection due to bending. Therefore, it can be said that the position detection system 1 according to the present embodiment can also provide a position detection device that includes a foldable display and supports the position detection of an electromagnetic induction pen by the EMR method.

[0077] Further, according to the position detection system 1 according to the present embodiment, it is possible to realize thinning of the structure 33 including the EMR sensor 42 compared to the case where one or both of each Rx coil in the Rx electrode layer 42R and each Tx coil in the Tx electrode layer 42T are formed in multiple layers.

[0078] FIG. 16 is a diagram showing a layer structure of a structure 33 included in the position detection device 3 according to the first modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present 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 modification, each Tx coil in the Tx electrode layer 42T is connected to a corresponding pad by wiring in the same plane (not shown), and each Rx coil in the Rx electrode layer 42R is connected to a corresponding pad by a via conductor (not shown). Also with the configuration of this modification, for the same reason as in the present embodiment, it is possible to provide a position detection device that includes a foldable display and corresponds to the position detection of an electromagnetic induction pen using the EMR method, and it can be said that it is possible to reduce the thickness of the structure 33 including the EMR sensor 42.

[0079] FIG. 17(a) is a diagram showing the upper surface of the support plate 45 included in the position detection device 3 according to the second modification of the present embodiment, and FIG. 17(b) is a diagram showing the lower surface of the support plate 45 included in the position detection device 3 according to the second modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that each of the Rx electrode layer 42R and the Tx electrode layer 42T is formed on both the upper surface and the lower surface of the support plate 45. In this modification, among the wirings formed in the Rx electrode layer 42R and the Tx electrode layer 42T, the portions extending in the y direction are formed on the upper surface of the support plate 45, and the portions extending in the x direction are formed on the lower surface of the support plate 45. Each part of each Tx coil and each Rx coil is connected to each other by via conductors VC, thereby constituting one coil when viewed in plan. Both ends of each Tx coil and each Rx coil are connected to pads PD, respectively. Also with the configuration of this modification, for the same reasons as in the present embodiment, it is possible to provide a position detection device including a foldable display and corresponding to the position detection of an electromagnetic induction pen using the EMR method, and it can be said that it is possible to realize thinning of the structure 33 including the EMR sensor 42. Needless to say, in FIGS. 17(a) and 17(b), the Rx electrode layer 42R and the Tx electrode layer 42T may be interchanged.

[0080] Next, the position detection system 1 according to the third embodiment of the present invention will be described. The position detection system 1 according to the present embodiment is different 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 not on the surface of the support plate 45 but on the same layer as the backplane 43b. Since the other points are the same as those of the position detection system 1 according to the first embodiment, the description will continue below focusing on the differences from the position detection system 1 according to the first embodiment.

[0081] FIG. 18 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the present embodiment. As can be understood by comparing FIG. 18 with FIG. 5, the structure 33 according to the present 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, and adhesive layers 71 and 72, and the Tx electrode layer 42T is provided in the same layer as the backplane 43b.

[0082] The reason why the structure 33 according to the present embodiment has the cover glass 44 instead of the cover film 40 is that there is no need for bending. The cover glass 44 does not bend, but on the other hand, it has higher strength and durability than the cover film 40. Therefore, when bending is not required, it is preferable to use the cover glass 44 instead of the cover film 40. Since the cover glass 44 with high strength is used, the support plate 45 is unnecessary in the structure 33 according to the present embodiment.

[0083] Each Rx coil in the Rx electrode layer 42R according to the present embodiment is formed in 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 FIG. 8. That is, a plurality of Rx coils are constituted by a plurality of coil-shaped electrodes R that do not overlap each other. Among the conductors 111 and 112 constituting each coil-shaped electrode R, those extending so as to cover the active area A may be constituted by a mesh electrode, and those extending only outside the active area A may be constituted by an opaque plate-shaped conductor. Further, outside the active area A, a connection wiring 110, which is an opaque plate-shaped conductor connecting one end of each of the conductors 111 and 112, may be provided.

[0084] In addition, each Tx coil in the Tx electrode layer 42T according to the present embodiment is formed in a single layer on the same layer as the backplane 43b. Specifically, similar to each Rx coil in the Rx electrode layer 42R described with reference to FIG. 14, each Tx coil may be extended so as to avoid elements and wirings for pixel driving that are originally arranged in the backplane 43b. Further, the planar shape of the Tx electrode layer 42T may be a comb-shaped coil as described with reference to FIG. 6.

[0085] As described above, according to the position detection system 1 according to the present embodiment, since 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, it is possible to realize thinning of the structure 33 including the EMR sensor 42.

[0086] In the position detection device 3 according to the present embodiment, bending of the structure 33 does not pose a problem. However, the configurations of the Rx electrode layer 42R and the Tx electrode layer 42T in the present embodiment can also be applied to the structure 33 described in the first embodiment. And in that case, since each wiring in the Rx electrode layer 42R and each wiring in the Tx electrode layer 42T can be accurately positioned with respect to the bending axis BA, it is possible to provide a position detection device including a foldable display and corresponding to the position detection of an electromagnetic induction pen by the EMR method.

[0087] FIG. 19 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the first modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that both the Rx coil and the 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 configured by the same coil-shaped electrode, each of the Tx coil and the Rx coil of the EMR sensor 42 is formed by a comb-shaped coil similar to that described with reference to FIGS. 6 and 7, or a plurality of coil-shaped electrodes arranged so as not to overlap. By configuring one or both of the Tx coil and the Rx coil of the EMR sensor 42 in a multilayer structure, it is possible to realize thinning of the structure 33 including the EMR sensor 42 as compared with the case where one or both of the Tx coil and the Rx coil of the EMR sensor 42 are configured in a multilayer structure.

[0088] FIG. 20 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the second modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that the Tx electrode layer 42T is not provided in the display 43 but is disposed via an adhesive layer 71 in the lower layer of the display 43. Thus, the Tx electrode layer 42T may be disposed via the adhesive layer 71 in the lower layer of the display 43. The specific configuration of the Tx electrode layer 42T in this case may be a comb-shaped coil similar to that described with reference to FIGS. 6 and 7, or a plurality of electrically separated coil-shaped electrodes. In the latter case, a plurality of Tx coils may be configured using a plurality of layers (i.e., overlapping), or a plurality of Tx coils may be configured in one layer (i.e., not overlapping). If a plurality of Tx coils are formed in one layer, it is possible to realize thinning of the structure 33 including the EMR sensor 42, and it is also possible to provide a position detection device including a foldable display and corresponding to position detection of an electromagnetic induction pen by the EMR method.

[0089] Next, the position detection system 1 according to the fourth embodiment of the present invention will be described. FIG. 21 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the present embodiment. As shown in the figure, in the position detection system 1 according to the present embodiment, an integrated sensor 47 (integrated sensor layer) is provided on the upper surface of the display image generation layer 43a instead of the Rx electrode layer 42R including the touch sensor 41, and the Tx electrode layer 42T is not provided in the same layer as the backplane 43b, which is different from the position detection system 1 according to the third embodiment. The integrated sensor 47 is an integration of the touch sensor 41 and the EMR sensor 42, and plays the roles of both the touch sensor 41 and the EMR sensor 42. Since other points are the same as those of the position detection system 1 according to the third embodiment, the following description will continue focusing on the differences from the position detection system 1 according to the third embodiment.

[0090] FIGS. 22 to 24 are diagrams showing the planar configuration of the integrated sensor 47. The integrated sensor 47 according to the present embodiment is formed using two layers. FIG. 22 shows the configuration of the lower layer, FIG. 23 shows the configuration of the upper layer, and FIG. 24 shows the two layers overlapped.

[0091] First, referring to FIG. 22, a plurality of mesh electrodes 120, each having a square shape, are arranged in a grid pattern in a state where they are inclined by 45 degrees with respect to each of the x-direction and the y-direction and are arranged in the densest manner. A square hollow portion is provided inside each mesh electrode 120, and a square mesh electrode 121 is arranged therein. Adjacent mesh electrodes 120 and the mesh electrode 121 and the mesh electrode 120 therein are insulated from each other by leaving a slight gap. Hereinafter, the columns of the mesh electrodes 120 arranged in the grid pattern in the densest manner will be specified by the illustrated X coordinates (X1 to X11), and the rows will be specified by the illustrated Y coordinates (Y1 to Y11).

[0092] The mesh electrodes 120 belonging to the even rows (i.e., the rows with Y coordinates Y2, Y4, Y6, Y8, Y10) are connected to other adjacent mesh electrodes 120 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 adjacent mesh electrodes 120 in the x direction, while two adjacent mesh electrodes 120 in the y direction are insulated from each other with a slight gap. With the above configuration, a mesh conductor 130 extending in the x direction is formed for each even row of the mesh electrodes 120.

[0093] Next, referring to FIG. 23, jumper wirings 123, 124 and connection wiring 125 are provided in the upper layer. The jumper wiring 123 is composed of a plurality of linear conductors extending along the odd columns (i.e., the columns with X coordinates X1, X3, X5, X7, X9, X11) of the mesh electrodes 120. However, each linear conductor constituting the jumper wiring 123 is slightly cut at a position corresponding to the even rows of the mesh electrodes 120. The linear conductors constituting the jumper wiring 123 are connected to each other by the connection wiring 125 at the ends of the portions provided at one end in the y direction.

[0094] The jumper wiring 124 is composed of a plurality of linear conductors extending along the even columns (i.e., the columns with X coordinates X2, X4, X6, X8, X10) of the mesh electrodes 120. However, each linear conductor constituting the jumper wiring 124 is largely cut at a position corresponding to the odd rows (i.e., the rows with Y coordinates Y1, Y3, Y5, Y7, Y9, Y11) of the mesh electrodes 120.

[0095] Next, referring to FIG. 24, it can be understood that the jumper wiring 123 serves to connect a plurality of mesh electrodes 121 arranged in odd-numbered columns to each other, and the jumper wiring 124 serves to connect the mesh electrodes 120 arranged in even-numbered columns to each other. The jumper wiring 123 and the mesh electrode 121, and the jumper wiring 124 and the mesh electrode 120 are connected by via conductors (not shown). The plurality of mesh electrodes 121 arranged in odd-numbered columns are connected by the jumper wiring 123 to form each tooth portion 131 of the comb-shaped coil. The base of this comb-shaped coil is formed by the connection wiring 125. Also, the plurality of mesh electrodes 121 arranged in even-numbered columns are connected by the jumper wiring 124 to form a linear conductor 132 extending in the y direction.

[0096] Here, in this embodiment, the term "jumper wiring" is used. However, depending on the literature, wiring that has the role of connecting wirings of other layers to each other, similar to the "jumper wiring" according to this embodiment, may be referred to by other terms such as "bridge wiring" and "connection conductor". The "jumper wiring" according to this embodiment includes "bridge wiring" and "connection conductor" in such a meaning.

[0097] Also, in the above description, it was stated that the jumper wiring 123 serves to connect a plurality of mesh electrodes 121 arranged in odd-numbered columns to each other. Conversely, it can also be said that a plurality of mesh electrodes 121 arranged in odd-numbered columns serve to connect a plurality of jumper wirings 123 to each other. In such a meaning, it can be said that a plurality of mesh electrodes 121 arranged in odd-numbered columns are also "jumper wiring", "bridge wiring", and "connection conductor". Similarly, it can also be said that a plurality of mesh electrodes 120 arranged in even-numbered columns serve to connect a plurality of jumper wirings 124 to each other. In such a meaning, it can be said that a plurality of mesh electrodes 120 arranged in even-numbered columns are also "jumper wiring", "bridge wiring", and "connection conductor".

[0098] Figs. 25 and 26 are diagrams showing the electrical configuration of the integrated sensor 47. Fig. 25 shows the configuration when the integrated sensor 47 is used as an EMR sensor, and Fig. 26 shows the configuration when the integrated sensor 47 is used as a touch sensor.

[0099] First, referring to Fig. 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. Also, the sensor controller 31 is configured to have Tx circuits 60a, 60b and an Rx circuit 61a. The Tx circuits 60a and 60b each have the output terminals of the alternating current Tx and Tx_inv described with reference to Fig. 7, and the Rx circuit 61a has a differential amplifier having a non-inverting input terminal and an inverting input terminal.

[0100] The switch 57a is a multi-pole bipolar switch including a first common terminal connected to the output terminal of the alternating current Tx of the Tx circuit 60a, a second common terminal connected to the output terminal of the alternating current Tx_inv of the Tx circuit 60a, and a plurality of selection terminals connected to one end of each of the plurality of mesh conductors 130. The switch 57b is a multi-pole bipolar switch including a first common terminal connected to the output terminal of the alternating current Tx_inv of the Tx circuit 60b, a second common terminal connected to the output terminal of the alternating current Tx of the Tx circuit 60b, and a plurality of selection terminals connected to the other end of each of the plurality of mesh conductors 130. The switch 58 is a multi-pole bipolar switch including a first common terminal and a second common terminal connected to the non-inverting input terminal and the inverting input terminal of the differential amplifier disposed in the Rx circuit 61a, respectively, and a plurality of selection terminals connected to the other end (the end opposite to the end connected to the connection wiring 125) of each of the plurality of tooth portions 131.

[0101] When deriving the position of the electromagnetic induction pen 2 using the integrated sensor 47, the sensor controller 31 first selects any one of the mesh conductors 130 and, at the 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 to the selected mesh conductor 130 on the other side to the second common terminal. Also, the sensor controller 31 similarly connects, at the switch 57b, 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 to the selected mesh conductor 130 on the other side to the second common terminal.

[0102] Thereafter, the sensor controller 31 starts outputting the alternating currents Tx and Tx_inv from the Tx circuits 60a and 60b, respectively. As a result, alternating currents flowing in opposite directions flow on both sides of the selected mesh conductor 130, so that a virtual Tx coil centered on the selected mesh conductor 130 is formed and an alternating magnetic field is transmitted. After a specified time has elapsed since the sensor controller 31 started 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 tooth portions 131 to the non-inverting input terminal of the differential amplifier in the Rx circuit 61a and the other to the inverting input terminal of the differential amplifier in the Rx circuit 61a. As a result, a virtual Rx coil is formed by the two tooth portions 131 connected to the differential amplifier in the Rx circuit 61a and the portion of the connection wiring 125 connecting them, and a pen signal generated by the pen alternating magnetic field transmitted by the electromagnetic induction pen 2 in response to the alternating magnetic field is output from the output terminal of the differential amplifier.

[0103] The sensor controller 31 executes the above processing while changing the combination of the selected mesh conductor 130 and the tooth portion 131 connected to the differential amplifier in the Rx circuit 61a, and for each intersection of the virtual Tx coil and the virtual Rx coil, obtains the intensity of the pen signal (the intensity of the pen alternating magnetic field). Then, based on the two-dimensional distribution of the obtained pen signal intensities, the position of the electromagnetic induction pen 2 within the panel surface 3a is derived.

[0104] Next, referring to FIG. 26, in order to use the integrated sensor 47 as a touch sensor, the switch circuit 30 is configured to include switches 50a and 50b. Further, the sensor controller 31 is configured to include Tx circuits 60c and 60d and an Rx circuit 61b. The Tx circuit 60c is configured to be able to output an alternating current Tx, and the Tx circuit 60d is configured to be able to output an alternating current Tx_inv obtained by inverting the phase of the alternating current Tx. Note that the alternating currents Tx and Tx_inv mentioned here may be the same as the above-described alternating currents Tx and Tx_inv (alternating currents for the EMR sensor), or may be different. Also, the Rx circuit 61b is configured to include 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 FIG. 8. The input terminal of each inverting amplifier circuit is connected to one end of the corresponding linear conductor 132.

[0105] The switch 50a is a multi-pole single-pole switch including a common terminal connected to the output terminal of the alternating current Tx of the Tx circuit 60c and a plurality of selection terminals connected to one end of each of the plurality of mesh conductors 130. The switch 50b is a multi-pole single-pole switch including a common terminal connected to the output terminal of the alternating current Tx_inv of the Tx circuit 60d and a plurality of selection terminals connected to the other end of each of the plurality of mesh conductors 130.

[0106] When deriving the position of a finger using the integrated sensor 47, the sensor controller 31 first selects any one of the mesh conductors 130 and connects the selection terminals corresponding to the selected mesh conductor 130 to the common terminals in the switches 50a and 50b, respectively.

[0107] Subsequently, the sensor controller 31 simultaneously starts the output of the alternating current Tx from the Tx circuit 60c and the output of the alternating current Tx_inv from the Tx circuit 60d. While continuously outputting this, the sensor controller 31 acquires the intensity of the signal (hereinafter referred to as the "finger touch detection signal") output from each inverting amplifier circuit in the Rx circuit 61b.

[0108] The sensor controller 31 executes the above processing while changing the selected mesh conductor 130, thereby acquiring the intensity of the finger touch detection signal for each intersection of the mesh conductor 130 and the linear conductor 132. Then, based on the two-dimensional distribution of the acquired intensity of the finger touch detection signal, the position of the finger within the panel surface 3a is derived.

[0109] As described above, according to the position detection device 3 of the present embodiment, since the integrated sensor 47 that functions as both an EMR sensor and a touch sensor can be formed in two layers, for example, at the same level as the position detection device 3 (shown in FIG. 18) described in the third embodiment, it becomes possible to reduce the thickness of the structure 33 including the touch sensor and the EMR sensor.

[0110] Also, it is possible to apply the integrated sensor 47 in the present embodiment to the structure 33 described in the first embodiment. In that case, since each wiring of the integrated sensor 47 can be accurately positioned with respect to the folding axis BA, it becomes possible to provide a position detection device that includes a foldable display and supports the position detection of an electromagnetic induction pen using the EMR method.

[0111] In the present embodiment, an example of forming the integrated sensor 47 in two layers has been described, but of course, it may be formed in three layers. For example, the Tx coil and the Rx coil constituting the EMR sensor are provided in the first layer and the second layer respectively, and both the Tx electrode and the Rx electrode constituting the touch sensor are provided in the third layer. At the intersection of the Tx electrode and the Rx electrode, the connection wiring provided in the second layer may be used, and either the Tx electrode or the Rx electrode may be routed to the second layer.

[0112] FIG. 27 is a diagram showing the layer structure of the structure 33 included in the position detection device 3 according to the first modification of the present embodiment. The position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that the integrated sensor 47 is arranged outside (upper side) instead of inside the display 43. The integrated sensor 47 and the display 43 are adhered to each other by an adhesive layer 73. Also with this configuration, similar to the position detection device 3 according to the present embodiment, it becomes possible to realize thinning of the structure 33 including the touch sensor and the EMR sensor.

[0113] FIG. 28 is a diagram showing the planar configuration of the integrated sensor 47 according to the second modification of the present embodiment. This figure corresponds to an enlarged view of a part of the integrated sensor 47 shown in FIG. 24. As can be understood by comparing this figure with FIG. 24, the position detection device 3 according to this modification is different from the position detection device 3 according to the present embodiment in that a plurality of jumper wirings 123 in which a set of mesh electrodes 121 run in parallel are connected to each other, and a plurality of bypass wirings 126 are provided at positions corresponding to the inside of each mesh electrode 121 when viewed in plan. The bypass wiring 126 is wiring provided in the same layer as the jumper wiring 123. In FIG. 28, the circular portions provided at the ends of each jumper wiring 123 and each bypass wiring 126 represent the positions of via conductors that connect the jumper wiring 123 or the bypass wiring 126 to the mesh electrode 121. By doing so, it becomes possible to make the wiring resistance of the virtual Rx coil constituted by the tooth portion 131 and the connection wiring 125 smaller than in the case of the present embodiment.

[0114] Here, preferred configuration examples of the position detection device, sensor, and display according to the present embodiment will be collectively described. The position detection device, sensor, and display according to the present embodiment are preferably configured as shown in the following configurations A1 to A14, B1 to B7, C1 to C3, D1 to D10, E1 to E7, F1 to F6, G1, H1, I1, J1, K1, L1, M1, N1, O1 to O14, P1 to P7, Q1 to Q9, R1 to R8, S1, T1, U1, V1, X1, Y1, Z1, AA1. (Configuration 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 provided with Tx electrodes that generate an alternating magnetic field, On the side opposite to the side where the Tx electrode layer is provided with the display image generation layer as the center, an Rx electrode layer provided with a plurality of Rx electrodes that detect a pen alternating magnetic field generated by the pen that has accumulated power by the alternating magnetic field, A position detection device including the above. (Configuration A2) The Tx electrodes constitute a plurality of Tx coils arranged side by side in a first direction, The plurality of Rx electrodes constitute a plurality of Rx coils juxtaposed in a second direction intersecting the first direction, The position detection device according to Configuration A1. (Configuration A3) An integrated circuit that derives the coordinates of the pen based on the intensity of each intersection of the plurality of Tx coils and the plurality of Rx coils of the pen alternating magnetic field sent out by the pen in response to the alternating magnetic field, The position detection device according to Configuration A2 including the above. (Configuration A4) The plurality of Rx electrodes are formed in one layer on one surface of the display image generation layer, The position detection device according to Configuration A1. (Configuration A5) The plurality of Rx electrodes are constituted by a plurality of coil-shaped electrodes that do not overlap each other, The position detection device according to Configuration A4. (Configuration A6) Each of the plurality of coil-shaped electrodes includes a transparent portion constituted by a transparent conductor, The position detection device according to Configuration A5. (Configuration A7) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a repetition of a predetermined local pattern, The position detection device according to Configuration A5. (Configuration A8) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode located at both ends include the two mesh electrodes extending in parallel. The position detection device according to Configuration A7. (Configuration A9) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode each have a connection wiring connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device according to Configuration A8. (Configuration A10) Among the plurality of coiled electrodes, the first coiled electrode and the second coiled electrode located at both ends each have an opaque metal conductor extending in parallel with the mesh electrode. The position detection device according to Configuration A7. (Configuration A11) The Tx electrode is formed in one layer. The position detection device according to Configuration A1. (Configuration A12) The Tx electrode is a comb-shaped coil having a configuration in which a plurality of tooth portions extending in a second direction are connected to a base portion extending in a first direction intersecting the second direction at one end of each. The position detection device according to Configuration A11. (Configuration A13) The comb-shaped coil includes a first comb-shaped coil provided on one side of the bending axis of the display including the display image generation layer, and a second comb-shaped coil provided on the other side of the bending axis. The base portion of the first comb-shaped coil and the base portion of the second comb-shaped coil are connected by a connection conductor extending across the bending axis. The position detection device according to Configuration A12. (Configuration A14) Including a support plate. The Tx electrode is formed in one layer on one surface of the support plate. The position detection device according to 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 provided with Tx electrodes that generate an alternating magnetic field, including an Rx electrode layer provided with a plurality of Rx electrodes that detect a pen alternating magnetic field generated by the pen that has accumulated power by the 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 plurality of Rx electrodes are constituted by a plurality of coil-shaped electrodes that do not overlap each other, the position detection device according to Configuration B1. (Configuration B3) each of the plurality of coil-shaped electrodes includes a transparent portion constituted by a transparent conductor, the position detection device according to Configuration A2. (Configuration B4) each of the plurality of coil-shaped electrodes includes a mesh electrode having a repetition of a predetermined local pattern, the position detection device according to Configuration B2. (Configuration B5) among the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first coil-shaped electrode and the second coil-shaped electrode located at both ends include two mesh electrodes extending in parallel, the position detection device according to Configuration B4. (Configuration B6) among the plurality of coil-shaped electrodes, the coil-shaped electrodes other than the first coil-shaped electrode and the second coil-shaped electrode each have a connection wiring connecting the two mesh electrodes outside an active area where the display image is displayed, the position detection device according to Configuration B5. (Configuration B7) among the plurality of coil-shaped electrodes, the first coil-shaped electrode and the second coil-shaped electrode located at both ends each have an opaque metal conductor extending in parallel with 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 the panel surface by electromagnetic induction, A display image generation layer that generates a display image according to the control by a drive circuit, A Tx electrode layer in which Tx electrodes for generating an alternating magnetic field are disposed, An Rx electrode layer in which a plurality of Rx electrodes for detecting a pen alternating magnetic field generated by the pen that has accumulated power by the alternating magnetic field are disposed, A support plate provided at a position farther from the panel surface than the display image generation layer, and includes, The Tx electrode is formed in one layer on one surface of the support plate, A position detection device including. (Configuration C2) The Tx electrode is a comb-shaped coil having a configuration in which a plurality of tooth portions extending in a second direction are connected to a base portion extending in a first direction intersecting the second direction at one end of each, The position detection device described in Configuration C1. (Configuration C3) The support plate includes a first support plate provided on one side of the bending axis of the display including the display image generation layer, and a second support plate provided on the other side of the bending 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 portion of the first comb-shaped coil and the base portion of the second comb-shaped coil are connected by a connection conductor extending across the bending axis, The position detection device described in Configuration C2. (Configuration D1) A position detection device that detects the positions of a pen and a finger on the panel surface, A display image generation layer that generates a display image according to the control by a drive circuit, An integrated sensor layer disposed between the panel surface and the display image generation layer, and includes, The integrated sensor layer includes a touch sensor for detecting the position of a finger on the panel surface by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action. The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. At least a part 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. The position detection device according to Configuration D1. (Configuration D3) The plurality of first coils are formed in a 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. The position detection device according to Configuration D1. (Configuration D4) The portion of the second electrode formed in the first layer is a connection conductor that connects a plurality of portions of the second electrode formed in the second layer. The position detection device according to Configuration D3. (Configuration D5) The connection conductor is a jumper wiring or a bridge wiring. The position detection device according to 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 a via conductor. The position detection device according to Configuration D3. (Configuration D7) The portion formed in the first layer of the second coil is a connection conductor that connects a plurality of portions formed in the second layer of the second coil. The connection conductor is formed in the same layer as at least a part of the plurality of second electrodes. The position detection device according to Configuration D4. (Configuration D8) The plurality of second electrodes and the plurality of second coils are extended so as not to overlap when viewed in a plane. The position detection device according to Configuration D6. (Configuration D9) The plurality of second electrodes and the plurality of second coils are alternately extended when viewed in the second direction. The position detection device according to any one of Configurations D6 to D8. (Configuration D10) The plurality of first electrodes and the plurality of first coils are constituted by the same wiring formed in the first layer. The position detection device according to 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 the control by a drive circuit, 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 by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action. The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. The plurality of second coils are each constituted by a comb-shaped coil having a configuration in which a plurality of tooth portions extending in the first direction are connected at one end thereof to a base portion extending in the second direction. Position detection device. (Configuration E2) The integrated sensor layer is formed of two or three layers. The position detection device according to Configuration E1. (Configuration E3) The plurality of first coils are formed in a 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. The position detection device according to Configuration E1. (Configuration E4) The plurality of tooth portions 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. The position detection device according to Configuration E1. (Configuration E5) The plurality of second electrodes and the plurality of tooth portions are extended so as not to overlap in a planar view. The position detection device according to Configuration E4. (Configuration E6) The plurality of second electrodes and the plurality of tooth portions are extended alternately in the second direction. The position detection device according to Configuration E4 or E5. (Configuration E7) The plurality of first electrodes and the plurality of first coils are constituted by the same wiring formed in the first layer. The position detection device according to Configuration E1. (Configuration F1) A position detection device for detecting the position of a pen on a panel surface by electromagnetic induction, A plurality of first electrodes each having a hollow portion and arranged in a lattice pattern, A plurality of second electrodes arranged in the hollow portions of the plurality of first mesh electrodes, A plurality of first connection wirings are formed in a layer different from the plurality of first electrodes and the plurality of second electrodes, and 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 of an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction. Position detection device. (Configuration F2) It has a second connection wiring that connects one ends of the plurality of first wirings to each other. Each of the plurality of first wirings constitutes a tooth portion of a comb-shaped coil. The second connection wiring constitutes a base portion of the comb-shaped coil. The position detection device according to Configuration F1. (Configuration F3) A plurality of third connection wirings are further included, which are formed in the same layer as the plurality of first electrodes, and connect two adjacent first electrodes in a second direction intersecting the first direction to each other, thereby constituting a plurality of second wirings extending in the second direction. The plurality of second wirings constitute a transmission coil of an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction. The position detection device according to Configuration F1 or F2. (Configuration F4) A plurality of third electrodes arranged in a grid pattern. A plurality of fourth connection wirings are formed in a layer different from the plurality of first electrodes, the plurality of second electrodes, and the plurality of third electrodes, and connect two adjacent third electrodes in the first direction to each other, thereby constituting a plurality of third wirings extending in the first direction. The plurality of third wirings constitute receiving electrodes of a touch sensor for detecting the position of a finger on the panel surface by a capacitance method. The plurality of second wirings are also used as transmission electrodes of the touch sensor. The position detection device according to Configuration F3. (Configuration F5) further including 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 connection wiring are disposed between the panel surface and the display image generation layer, The position detection device according to Configuration F1. (Configuration F6) the plurality of first electrodes and the plurality of second electrodes are mesh electrodes, The position detection device according to Configuration F5. (Configuration G1) A sensor used together with an electronic device that detects the positions 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, is disposed between the panel surface and the display image generation layer, includes a touch sensor for detecting the position of a finger on the panel surface by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action, the touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction, the EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction, at least a part 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 together with an electronic device that detects the positions 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 by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action, The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. At least a part 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 together with an electronic device for detecting the positions 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 is Disposed between the panel surface and the display image generation layer, A touch sensor for detecting the position of a finger on the panel surface by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action are included. The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. The plurality of second coils are each constituted by a comb-shaped coil having a configuration in which a plurality of tooth portions extending in the first direction are connected to a base portion extending in the second direction at one end of each. Sensor. (Configuration J1) A sensor used together with an electronic device for detecting the positions 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 by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by an electromagnetic induction action. The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. The plurality of second coils are each constituted by a comb-shaped coil having a configuration in which a plurality of tooth portions extending in the first direction are connected to a base portion extending in the second direction at one end thereof. Sensor. (Configuration K1) A sensor used together with an electronic device that detects the position of a pen on a panel surface by electromagnetic induction, 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, 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 to each other. The plurality of first wirings constitute a reception coil of an EMR sensor for detecting the position of a 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, A sensor disposed between the panel surface and the display image generation layer and used for detecting 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 by a capacitance method 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 side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. At least a part 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 driving circuit, A sensor disposed between the panel surface and the display image generation layer and used to detect the position of a pen on the panel surface by electromagnetic induction action, The sensor includes a touch sensor for detecting the position of a finger on the panel surface by a capacitance method and an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction action. The touch sensor includes a plurality of first electrodes arranged side by side in a first direction and a plurality of second electrodes arranged side by side in a second direction intersecting the first direction. The EMR sensor includes a plurality of first coils arranged side by side in the first direction and a plurality of second coils arranged side by side in the second direction. The plurality of second coils are each constituted by a comb-shaped coil having a configuration in which a plurality of tooth portions extending in the first direction are connected to a base portion extending in the second direction at one end thereof. Display. (Configuration N1) A display image generation layer that generates a display image according to control by a driving circuit, A sensor disposed between the panel surface and the display image generation layer and used to detect the position of a pen on the panel surface by electromagnetic induction action, A plurality of first electrodes each having a hollow portion and arranged in a grid pattern, A plurality of second electrodes disposed within the hollow portions of each of the plurality of first mesh electrodes; 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 to each other; 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. Display. (Configuration O1) A position detection device for detecting 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 provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction; A second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction, on the side opposite to the side where the first electrode layer is provided with the display image generation layer as the center; A position detection device including the above. (Configuration O2) Sending an alternating magnetic field from the first electrode, Detecting a pen alternating magnetic field generated by the pen that has accumulated charges in the electrode using the second electrode, with the alternating magnetic field; The position detection device according to Configuration O1. (Configuration 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 sent by the pen in response to the alternating magnetic field; The position detection device according to Configuration O2 including the above. (Configuration O4) The one or more second electrodes are formed in a single layer on one surface of the display image generation layer. The position detection device according to Configuration O1. (Configuration O5) The one or more second electrodes are each composed of a plurality of coiled electrodes that do not overlap with each other. The position detection device according to Configuration O4. (Configuration O6) Each of the plurality of coiled electrodes includes a transparent portion formed of a transparent conductor. The position detection device according to Configuration O5. (Configuration O7) Each of the plurality of coiled electrodes includes a mesh electrode having a repetition of a predetermined local pattern. The position detection device according to Configuration O5. (Configuration O8) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode located at both ends include two mesh electrodes extending in parallel. The position detection device according to Configuration O7. (Configuration O9) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode each have a connection wiring connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device according to Configuration O8. (Configuration O10) Among the plurality of coiled electrodes, the first coiled electrode and the second coiled electrode located at both ends each have an opaque metal conductor extending in parallel with the mesh electrode. The position detection device according to Configuration O7. (Configuration O11) The one or more first electrodes are formed in one layer. The position detection device according to Configuration O1. (Configuration O12) The one or more first electrodes are each a comb-shaped coil having a configuration in which a plurality of tooth portions extending in the second direction are connected to a base portion extending in the first direction at one end of each. The position detection device according to Configuration O11. (Configuration O13) The comb-shaped coil includes a first comb-shaped coil provided on one side of the bending axis of the display including the display image generation layer, and a second comb-shaped coil provided on the other side of the bending axis. The base of the first comb-shaped coil and the base of the second comb-shaped coil are connected by a connection conductor extending across the bending axis. The position detection device according to Configuration O12. (Configuration O14) Including a support plate. The one or more first electrodes are formed in a single layer on one surface of the support plate. The position detection device according to Configuration O1. (Configuration P1) A position detection device that detects the position of a pen on the panel surface by electromagnetic induction, A display image generation layer that generates a display image according to the control by a drive circuit, A first electrode layer provided with one or more first electrodes that constitute a plurality of first coils arranged side by side in a first direction, A second electrode layer provided with one or more second electrodes that constitute a plurality of second coils arranged side by side in a second direction intersecting the first direction. 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 constituted by a plurality of coil-shaped electrodes that do not overlap each other. The position detection device according to Configuration P1. (Configuration P3) Each of the plurality of coil-shaped electrodes includes a transparent portion constituted by a transparent conductor. The position detection device according to Configuration P2. (Configuration P4) Each of the plurality of coil-shaped electrodes includes a mesh electrode having a repetition of a predetermined local pattern. The position detection device according to Configuration P2. (Configuration P5) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode located at both ends include the two mesh electrodes extending in parallel. The position detection device according to Configuration P4. (Configuration P6) Among the plurality of coiled electrodes, the coiled electrodes other than the first coiled electrode and the second coiled electrode each have a connection wiring connecting the two mesh electrodes outside the active area where the display image is displayed. The position detection device according to Configuration P5. (Configuration P7) Among the plurality of coiled electrodes, the first coiled electrode and the second coiled electrode located at both ends each have an opaque metal conductor extending in parallel with the mesh electrode. The position detection device according to Configuration P4. (Configuration 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 in which one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction are disposed, A second electrode layer in which one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed, A support plate provided at a position farther from the panel surface than the display image generation layer, and includes, The one or more first electrodes are formed on the support plate. Position detection device. (Configuration Q2) Send an alternating magnetic field from the first electrode, Detect the pen alternating magnetic field generated by the pen that has accumulated charges in the electrode by the alternating magnetic field using the second electrode. The position detection device according to Configuration Q1. (Configuration Q3) Send an alternating magnetic field from the second electrode, Detecting, using the first electrode, the pen alternating magnetic field generated by the pen that has accumulated electrodes due to the alternating magnetic field. The position detection device according to 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 tooth portions extending in the second direction are connected to a base portion extending in the first direction at one end of each. The position detection device according to Configuration Q1. (Configuration Q5) The support plate includes a first support plate provided on one side of the bending axis of the display including the display image generation layer, and a second support plate provided on the other side of the bending 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 portion of the first comb-shaped coil and the base portion of the second comb-shaped coil are connected by a connection conductor extending across the bending axis. The position detection device according to Configuration Q4. (Configuration Q6) The one or more first electrodes are formed in one layer on one surface of the support plate. The one or more second electrodes are formed in one layer on the other surface of the support plate. The position detection device according to any one of Configurations Q1 to Q3. (Configuration Q7) The support plate further includes a plurality of pads formed on the one surface. Each of the one or more first electrodes is connected to any one of the plurality of pads by wiring in the same plane. Each of the one or more second electrodes is connected to any one of the plurality of pads by a via conductor provided on the support plate. The position detection device according to Configuration Q6. (Configuration Q8) The above-described one or more first electrodes have a configuration in which a portion formed in one layer on one surface of the support plate and a portion formed in one layer on the other surface of the support plate are interconnected by via conductors provided in the support plate. The above-described one or more second electrodes have a configuration in which a portion formed in one layer on one surface of the support plate and a portion formed in one layer on the other surface of the support plate are interconnected by via conductors provided in the support plate. The position detection device according to any one of Configurations Q1 to Q3. (Configuration Q9) Further including a plurality of pads formed on the one surface of the support plate. Each of the above-described one or more first electrodes is connected to any one of the plurality of pads by wiring formed on one surface of the support plate. Each of the above-described one or more second electrodes is connected to any one of the plurality of pads by wiring formed on one surface of the support plate. The position detection device according to 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, Including 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 ends of two conductors respectively extending in parallel along a first direction are connected by a connection wiring extending in a second direction intersecting the first direction. Of the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover a region where the display image is displayed as viewed in a plane are constituted by a mesh electrode or a transparent electrode. Position detection device. (Configuration R2) Each of the plurality of coil-shaped electrodes is formed in a Π shape. The position detection device according to Configuration R1. (Configuration R3) The plurality of coil-shaped electrodes are electrically separated from each other. The position detection device according to Configuration R1. (Configuration R4) The plurality of coil-shaped electrodes are formed in one layer. The position detection device according to Configuration R1. (Configuration R5) Among the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover the area where the display image is displayed when viewed in plan, and the connection wiring constituting each of the plurality of coil-shaped electrodes is composed of an opaque plate-shaped conductor. The position detection device according to Configuration R1. (Configuration R6) When the plurality of coil-shaped electrodes are used as an EMR sensor for detecting the position of a pen on the panel surface by electromagnetic induction, the other ends of the plurality of coil-shaped electrodes are grounded. When the plurality of coil-shaped electrodes are used as a touch sensor for detecting the position of a finger on the panel surface by the capacitance method, a switch circuit that connects one end and the other end of each of the plurality of coil-shaped electrodes to each other. The position detection device according to any one of Configurations R1 to R5, further including the above. (Configuration R7) Each of the plurality of coil-shaped electrodes is used as a receiving coil of the EMR sensor and a receiving electrode of the touch sensor. One end of each of the plurality of coil-shaped electrodes is connected to a receiving circuit. The position detection device according to Configuration R6. (Configuration R8) The transmitting coil of the EMR sensor, The transmitting electrode of the touch sensor, The position detection device according to Configuration R7, further including the above. (Configuration S1) A sensor used together with an electronic device that detects the position of a pen on the 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 sensor a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction, on the side opposite to the side where the first electrode layer is provided with the display image generation layer as the center, sensor. (Configuration T1) A sensor used together with an electronic device 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 sensor a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction, The one or more second electrodes are formed in one layer on one surface of the display image generation layer. sensor. (Configuration V1) A sensor used together with an electronic device 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, and a support plate provided at a position farther from the panel surface than the display image generation layer. The sensor a first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction, The above-mentioned first electrode of 1 or more is formed on the support plate, sensor. (Configuration W1) A sensor used together with an electronic device for detecting the positions 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 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 ends of two conductors respectively extending in parallel along a first direction are connected by a connection wiring extending in a second direction intersecting the first direction, Among the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover the region where the display image is displayed as viewed in a plane are constituted by 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, A sensor used for detecting the position of a pen on a panel surface by electromagnetic induction action, The sensor is A first electrode layer provided with one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction, On the side opposite to the side where the first electrode layer is provided with respect to the display image generation layer as the center, a second electrode layer provided with one or more second electrodes constituting a plurality of second coils arranged side by side 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, A sensor used for detecting the position of a pen on a panel surface by electromagnetic induction action, The sensor is A first electrode layer in which one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction are disposed; A second electrode layer in which one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed, and the one or more second electrodes are formed in a single layer on one surface of the display image generation layer, A 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 the panel surface by electromagnetic induction, A support plate provided at a position farther from the panel surface than the display image generation layer, and the sensor A first electrode layer in which one or more first electrodes constituting a plurality of first coils arranged side by side in a first direction are disposed, A second electrode layer in which one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction are disposed, and the one or more first electrodes are formed on the support plate, A display. (Configuration AA1) 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 the panel surface by electromagnetic induction, and the sensor 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 ends of two conductors respectively extending in parallel along a first direction are connected by a connection wiring extending in a second direction intersecting the first direction, among the two conductors constituting each of the plurality of coil-shaped electrodes, those extending so as to cover a region where the display image is displayed when viewed in a plane are constituted by a mesh electrode or a transparent electrode, Display

[0115] The preferred embodiments of the present invention have been described above. However, the present invention is not limited to such embodiments, and it goes without saying that the present invention can be implemented in various forms without departing from the gist thereof.

Description of Reference Numerals

[0116] 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 80 Flexible printed circuit board 90 Inverting amplifier circuit 100 Tooth portion 101 Base portion 102 Pad 103 Connection conductor 104 Bending portion 110 Connection Wiring 111, 112 Conductors 120, 121 Mesh Electrodes 122 Bridge Conductor 123, 124 Jumper Wires 125 Connection Wiring 130 Mesh Conductor 131 Tooth Portion 132 Linear Conductor A Active Area BA Bending Axis LCx, LCy Loop Coils R Coil-shaped Electrode

Claims

1. A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, a display image generating 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 arranged; a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction are arranged; a support plate provided at a position farther from the panel surface than the display image generating layer; the one or more first electrodes are formed on the support plate; the one or more first electrodes are formed as a single layer on one surface of the support plate; the one or more second electrodes are formed as a single layer on the other surface of the support plate; a plurality of pads formed on the one surface of the support plate; each of the one or more first electrodes is connected to any one of the plurality of pads by wiring in the same plane; Each of the one or more second electrodes is connected to any one of the plurality of pads by a via conductor provided in the support plate. Position detection device.

2. A position detection device that detects the position of a pen on a panel surface by electromagnetic induction, a display image generating 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 arranged; a second electrode layer on which one or more second electrodes constituting a plurality of second coils arranged side by side in a second direction intersecting the first direction are arranged; a support plate provided at a position farther from the panel surface than the display image generating layer; the one or more first electrodes have a configuration in which a portion formed as a single layer on one surface of the support plate and a portion formed as a single layer on the other surface of the support plate are mutually connected by via conductors provided in the support plate, the one or more second electrodes have a configuration in which a portion formed as a single layer on one surface of the support plate and a portion formed as a single layer on the other surface of the support plate are mutually connected by via conductors provided in the support plate; Position detection device.

3. a plurality of pads formed on the one surface of the support plate; each of the one or more first electrodes is connected to any one of the plurality of pads by a wiring formed on one surface of the support plate; Each of the one or more second electrodes is connected to any one of the plurality of pads by a wiring formed on one surface of the support plate. The position detection device according to claim 2 .

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