JP5846930B2 - Touch panel, display device and electronic device - Google Patents

Description

  The present technology relates to a touch panel that enables detection of a position where an object such as a finger, a hand, an arm, or a pen (hereinafter referred to as “finger”) touches a detection surface. The present technology also relates to a display device and an electronic device that include such a touch panel.

  Conventionally, a technique for inputting information by touching with a finger or the like is known. Among them, there is a display device that can receive information similar to that when a normal button is pressed with a finger or the like by touching various buttons displayed on the display with a finger or the like. Since this technology enables the common use of the display and buttons, it brings great benefits such as space saving and a reduction in the number of parts.

  There are various types of touch panels for detecting contact with a finger or the like, and a capacitive type is widely used as a device that requires multipoint detection, such as a smartphone ( For example, see Patent Document 1). The capacitive touch panel includes, for example, a matrix-like electrode pattern in a detection surface, and detects a change in capacitance at a position touched by a finger or the like.

JP 2010-277461 A

  By the way, in the portable terminal provided with the touch panel, for example, when the user places the portable terminal on his / her ear to make a call, the user's ear or cheek may contact the touch panel and cause malfunction. Therefore, in order to prevent this, a proximity sensor is generally used to detect that the user's ears or cheeks are approaching the touch panel and prevent malfunction. Also, proximity sensors may be used for applications other than those described above.

  In general, an infrared proximity sensor is used as the proximity sensor. Therefore, it is necessary to provide an opening for the sensor on the frame of the mobile terminal. However, when the opening is provided in the frame, there is a problem that the appearance impression to the portable terminal is not so good. Moreover, there also existed a problem that a portable terminal will become high-cost by use of an infrared proximity sensor.

  The present technology has been made in view of such problems, and the purpose thereof is a touch panel that can be mounted with the function of a proximity sensor with a good visual impression and at a low cost, and a display device including the touch panel And providing electronic equipment.

The touch panel of the present technology includes a touch sensor capable of detecting contact on the detection surface in the display area and a plurality of proximity sensors capable of detecting proximity to the detection surface in the frame area. It is a thing. Here, each proximity sensor is a self-capacitance type capacitive sensor including a high-resistance element electrically connected to an electrode .

  The display device of the present technology includes a video generation device that generates video, a touch panel disposed on a surface of the video generation device, and a control device that controls the video generation device and the touch panel. The touch panel included in the display device of the present technology has the same components as the above touch panel.

  An electronic apparatus according to an embodiment of the present technology includes the display device described above.

  In the touch panel, the display device, and the electronic device of the present technology, a plurality of capacitance sensors are provided in the frame area. As a result, not only erroneous detection can be prevented, but also, for example, a large conductor that is difficult to detect with a touch sensor in the display area can be detected when the conductor is close to the detection surface. Here, unlike an infrared proximity sensor or the like, a capacitance sensor does not require a window for emitting light for sensing or for taking in external light on the detection surface. Even if it is obscured by, for example, proximity to the detection surface can be detected. Therefore, there is no possibility that the appearance impression is deteriorated by providing the capacitance sensor. Further, unlike an infrared proximity sensor or the like, the electrostatic capacity sensor has a configuration that can be manufactured together with the touch sensor using the manufacturing process of the touch sensor. For this reason, there is no need to increase the number of manufacturing steps or prepare new members when manufacturing the capacitance sensor, so that there is almost no increase in manufacturing cost due to the provision of the capacitance sensor.

  According to the touch panel, the display device, and the electronic device of the present technology, since a plurality of capacitance sensors are provided in the frame area, it is possible to implement the function of the proximity sensor with a good appearance and low cost. it can.

It is a figure for demonstrating the operation principle of the touch detection system used with the display apparatus which concerns on one embodiment of this technique, and is a figure which shows the state at the time of non-contact. It is a figure for demonstrating the operation | movement principle of the touch detection system used with the display apparatus which concerns on one embodiment of this technique, and is a figure which shows an example of the drive signal of a touch sensor, and the waveform of a detection signal. It is a figure for demonstrating the principle of operation of the touch detection system used with the display apparatus which concerns on one embodiment of this technique, and is a figure which shows the state at the time of a finger contact. It is a figure which shows an example of the cross-sectional structure of the display apparatus which concerns on one embodiment of this technique. It is a figure which shows an example of a layout when the touch panel of FIG. 4 is seen from a detection surface. It is a figure which shows an example of the layout of the electrode pattern of the touch panel of FIG. It is a figure which shows an example of the cross-sectional structure of the touch panel of FIG. It is a figure which shows the other example of a layout when the touch panel of FIG. 4 is seen from a detection surface. It is a figure which shows an example of the layout of the electrode pattern of the touch panel of FIG. It is a figure which shows an example of the cross-sectional structure of the touch panel of FIG. It is a figure which shows an example of schematic structure of the electronic device which concerns on one application example.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the invention will be described in detail with reference to the drawings. The description will be given in the following order.

1. 1. Basic principle of touch detection method Embodiment 3. FIG. Modified example 4. Application examples

<1. Basic principle of touch detection method>
First, the basic principle of the touch detection method used in the display device of the following embodiment will be described. This touch detection method is embodied as a capacitive touch sensor. FIG. 1A schematically shows the touch sensor described above. FIG. 1B illustrates an equivalent circuit of the touch sensor in FIG. 1A and a peripheral circuit connected to the touch sensor. This touch sensor includes a dielectric 101 and a pair of electrodes 102 and 103 arranged to face each other with the dielectric 101 interposed therebetween. In an equivalent circuit, as shown in FIG. It is represented by element 104.

  One end (electrode 102) of the capacitive element 104 is connected to the AC signal source 105. The other end (electrode 103) of the capacitor 104 is connected to the voltage detection circuit 106 and further connected to the reference potential line 108 via the resistor 107. The AC signal source 105 outputs an AC rectangular wave Sg having a predetermined frequency (for example, about several kHz to several tens of kHz). The voltage detection circuit 106 detects the peak value of the input signal, and further determines whether or not the finger touches the touch sensor based on the detected voltage. For example, the reference potential line 108 is electrically connected to a member (for example, a ground layer of a printed circuit board or a conductive casing) that supplies a potential that is a reference of circuit operation in a device on which a touch sensor is mounted. When connected to the member, it has the same potential (reference potential) as that member. The reference potential is, for example, a ground potential.

  In this touch sensor, when an AC rectangular wave Sg (FIG. 2B) is applied from the AC signal source 105 to the electrode 102, an output waveform (detection signal Vdet) as shown in FIG. ) Appears.

  In a state where an object such as a finger is not in contact with the touch sensor (FIG. 1A), as shown in FIG. 1B, the capacitance value of the capacitive element 104 is increased as the capacitive element 104 is charged / discharged. A corresponding current I0 flows. The potential waveform on the electrode 103 side of the capacitor 104 at this time is, for example, a waveform V 0 in FIG. 2A, which is detected by the voltage detection circuit 106.

  On the other hand, in a state where an object such as a finger is in contact with the touch sensor (FIG. 3A), the capacitor 109 formed by the object such as a finger is changed to the capacitor 104 as illustrated in FIG. Added in series. In this state, currents I1 and I2 flow in accordance with charging / discharging of the capacitive elements 104 and 109, respectively. At this time, the potential waveform at the electrode 103 becomes, for example, a waveform V1 in FIG. 2A, which is detected by the voltage detection circuit 106. The potential of the electrode 103 is a divided potential determined by the values of the currents I1 and I2 flowing through the capacitive elements 104 and 109. For this reason, the waveform V1 is smaller than the waveform V0 in the non-contact state. Thereafter, the voltage detection circuit 106 compares the detection voltage with a predetermined threshold voltage Vth. When the detection voltage is equal to or lower than the threshold voltage Vth, it is determined as a non-contact state. When the detection voltage is higher than the threshold voltage Vth, the contact state is determined. To be judged. In this way, touch detection is performed. In the display device of the following embodiment, a detection method different from the above may be used.

<2. Embodiment>
[Constitution]
FIG. 4 illustrates an example of a cross-sectional configuration of the display device 1 according to the embodiment of the present technology. The display device 1 is a display device with a touch sensor and a proximity sensor, and includes a video generation device 10, a capacitive touch panel 20, and a control device 30. The touch panel 20 is formed separately from the video generation device 10 and is disposed on the surface of the video generation device 10. The control device 30 controls the video generation device 10 and the touch panel 20. Specifically, the control device 30 drives the video generation device 10 based on a video signal input from the outside, and further drives the touch panel 20 and outputs a signal corresponding to the detection signal of the touch panel 20 to the outside. It is like that.

(Video generation device 10)
The video generation device 10 generates a video based on a signal input from the control device 30. The image generation device 10 includes, for example, a liquid crystal display panel that generates an image by transmitting and modulating incident light by changing the arrangement of liquid crystal molecules, and a light source that illuminates the liquid crystal display panel from behind. Note that the video generation device 10 may have a configuration different from the above, and may be configured by, for example, an organic EL display panel that generates video by causing an organic EL element to emit light.

(Touch panel 20)
FIG. 5 shows an example of the layout when the touch panel 20 is viewed from the detection surface 21. FIG. 6 illustrates an example of the electrode pattern layout of the touch panel 20. 7A and 7B show an example of a cross-sectional configuration along the line AA in FIG.

  The touch panel 20 inputs information by touching the image display surface (the detection surface 21 of the touch panel 20) of the display device 1 with a finger or the like. The touch panel 20 corresponds to, for example, a specific example of the capacitive touch sensor described above, and detects contact / non-contact with the detection surface 21 such as a finger with an XY (matrix) matrix. A possible touch sensor 22 is provided in the display area 21A. The touch panel 20 further includes a plurality of capacitance type proximity sensors 23 capable of detecting proximity to the detection surface 21 such as a face in the frame region 21B. That is, the touch panel 20 can perform not only touch detection but also proximity detection.

  For example, as shown in FIG. 7A, the touch panel 20 is obtained by bonding a wiring substrate 50 and a cover substrate 60 to each other via an adhesive layer 70. The wiring board 50 and the cover board 60 are arranged facing each other with the adhesive layer 70 in between. The wiring board 50 is obtained by, for example, laminating a conductive layer 52, an insulating layer 53, and a conductive layer (not shown) in this order on the upper surface of the substrate 51 (the surface on the cover substrate 60 side). The cover substrate 60 is, for example, provided with a light shielding layer 62 on the lower surface of the substrate 61 (surface on the wiring substrate 50 side). The substrate 51 and the substrate 61 are arranged to face each other with the adhesive layer 70 in between. For example, the adhesive layer 70 is obtained by curing a UV curable resin.

  The substrate 51 is a formation substrate for the conductive layer 52 and the like, and holds the conductive layer 52 and the like. The board | substrate 51 is comprised by the insulating and light transmissive member, for example, is comprised by the glass substrate or the insulating and light transmissive resin film. The substrate 61 is a substrate that forms the detection surface 21 and covers the conductive layer 52 and the like. The substrate 61 also holds the light shielding layer 62. The board | substrate 61 is comprised by the insulating and light transmissive member, for example, is comprised by the glass substrate or the insulating and light transmissive resin film.

  The two conductive layers included in the wiring board 50 are made of a light-transmitting conductive material such as ITO (Indium Tin Oxide). The insulating layer included in the wiring substrate 50 is disposed between the two conductive layers included in the wiring substrate 50. The insulating layer 53 is for insulating and separating an X electrode 41 described later and a Y electrode 42 described later. The insulating layer 53 has a contact hole (not shown) for connecting the island electrode in the Y electrode 42 and the relay electrode. The light shielding layer 62 is for preventing the silhouette of signal wirings 44 and 45 described later and the proximity sensor 23 from being visually recognized on the detection surface, and is made of a light shielding material.

  The two conductive layers included in the wiring board 50 include a touch sensor 22 that detects contact / non-contact with the detection surface 21 and a plurality of signal wirings 44 that connect the touch sensor 22 and the control device 30 to each other. Yes. The touch sensor 22 is disposed at a position corresponding to a portion of the upper surface of the wiring board 50 excluding the outer edge. The signal wiring 44 is disposed at a position corresponding to the outer edge of the upper surface of the wiring board 50.

  The touch sensor 22 includes a plurality of X electrodes 41 extending in a predetermined direction and a plurality of Y electrodes 42 extending in a direction intersecting (for example, orthogonal to) the X electrode 41. The X electrode 41 is constituted by a part of the conductive layer 52. That is, the conductive layer 52 includes the X electrode 41. The X electrode 41 is formed in contact with the upper surface of the substrate 51 (the surface on the cover substrate 60 side), and includes a plurality of island electrodes and a connection electrode that connects two island electrodes adjacent to each other. It is a strip electrode. Here, the width of the connection electrode is narrower than the width of the island electrode.

  The Y electrode 42 is configured by a part of the conductive layer 52 and the whole or a part of the conductive layer other than the conductive layer 52 included in the wiring substrate 50. That is, the conductive layer 52 is configured to include the entire X electrode 41 and a part of the Y electrode 42, and the conductive layer other than the conductive layer 52 included in the wiring substrate 50 is a part of the Y electrode 42. It is configured to include. The Y electrode 42 electrically connects a plurality of island electrodes arranged in the same layer as the X electrode 41 and two island electrodes adjacent to each other and the X electrode 41 (specifically, a connecting electrode). ) Is a belt-like electrode composed of a relay electrode straddling. That is, the conductive layer 52 is configured to include the entire X electrode 41 and each island-shaped electrode, and the conductive layers other than the conductive layer 52 included in the wiring substrate 50 are configured to include the relay electrode. . Here, the width of the relay electrode is narrower than the width of the island electrode. Further, the island electrodes of the X electrode 41 and the Y electrode 42 are in a delta arrangement.

  The relay electrode has a band shape extending in the extending direction of the Y electrode 42. In the relay electrode, one end is connected to one island-like electrode, the other end is connected to another island-like electrode, and the portion straddling the X electrode 41 is arranged in a layer above the X electrode 41. Yes. The “layer above the X electrode 41” refers to a layer in contact with the upper surface of the insulating layer included in the wiring substrate 50. Specifically, a conductive layer other than the conductive layer 52 included in the wiring substrate 50 is referred to. pointing. Therefore, the relay electrode is arranged closer to the substrate 28 than the island electrode. The relay electrode is formed in a lump in the manufacturing process and is composed of a single layer. On the other hand, the island-shaped electrode is formed together with the X electrode 41 in a common manufacturing process, and the island-shaped electrode and the X electrode 41 are made of the same material.

  The two conductive layers included in the wiring board 50 further include a plurality of proximity sensors 23 that detect proximity to the detection surface 21, and a plurality of signal wirings 45 that connect the individual proximity sensors 23 and the control device 30 to each other. It is comprised including. The proximity sensor 23 is disposed at a position corresponding to the outer edge of the upper surface of the wiring board 50. The signal wiring 45 is disposed at a position corresponding to the outer edge on the upper surface of the wiring board 50.

  Each proximity sensor 23 is a self-capacitance type sensor. The plurality of proximity sensors 23 are distributed and arranged in two regions facing each other with at least the display region 21A in the frame region 21B. In FIG. 5, three proximity sensors 23 are arranged in one of the two areas facing each other with the display area 21A in between, and one proximity sensor 23 is arranged in the other area. Has been. The touch sensor 22 and each proximity sensor 23 are configured to include one or a plurality of electrodes selected from a plurality of electrodes arranged in a common layer. Specifically, as shown in FIGS. 6, 7 </ b> A, and 7 </ b> B, the touch sensor 22 includes an X electrode 41 and a Y electrode 42. One electrode 43 is disposed in the same layer as the electrode 41.

  The touch sensor 22 further includes a signal wiring 44 and an FPC (flexible printed wiring board) 24 connected to the signal wiring 45 as shown in FIGS. The FPC 24 has, on its surface, an IC 25 connected to the signal wiring 44, an IC 26 connected to the signal wiring 45, and a high resistance element 27 inserted in the signal wiring 45. The signal wiring 45 is connected to the electrode 43. The IC 25 is an IC for driving the touch sensor 22. The IC 26 is an IC for driving each proximity sensor 23. The high resistance element 27 is for increasing the impedance to the proximity sensor 23 and increasing the CR time constant so that even a slight change in C can be detected. It is composed of high resistance elements.

  The touch panel 20 may be, for example, a bonded type in which a conductive layer formation substrate and a conductive layer protective substrate are provided separately. For example, the conductive layer formation substrate and the conductive layer An integrated type with a common protective substrate may be used. For example, as shown in FIG. 7B, the touch panel 20 includes a conductive layer 82, an insulating layer 83, a conductive layer (not shown), and an insulating layer on the lower surface of the substrate 81 whose upper surface is the detection surface 21. 84 may be laminated in this order. In other words, in this case, the touch panel 20 has two conductive layers stacked on the lower surface of the substrate 81 with the insulating layer 83 interposed therebetween. The touch panel 20 further includes a light shielding layer 85 between the lower surface of the substrate 81 and a part of the conductive layer 82.

  The substrate 81 is a substrate that forms the detection surface 21 and holds the conductive layer 82 and the like. The board | substrate 81 is comprised by the insulating and light transmissive member, for example, is comprised by the glass substrate or the insulating and light transmissive resin film. The conductive layer 82 is made of a light-transmitting conductive material such as ITO (Indium Tin Oxide). In the manufacturing process, the conductive layer 82 is formed using the surface of the substrate 81 (the lower surface in FIG. 7B) and the surface of the light shielding layer 85 (the lower surface in FIG. 7B) as the formation surfaces. The plurality of conductive layers separated from each other. The plurality of conductive layers included in the conductive layer 82 are formed in the same process in the manufacturing process. The light shielding layer 85 is for preventing the silhouette of the signal wirings 44 and 45 and the proximity sensor 23 from being visually recognized on the image display surface, and is made of a light shielding material. The color of the light shielding material is typically black, but may be a color other than black (for example, white).

[Operation]
Next, an example of the operation in the display device 1 of the present embodiment will be described. First, for example, when the display device 1 is turned on, the control device 30 starts the operation of the touch panel 20. First, the control device 30 selects one or a plurality of electrodes (X electrode 41, Y electrode 42) included in the touch sensor 22, and applies an AC signal to the selected electrodes. At this time, if a finger or the like is in contact with the detection surface 21, the control device 30 detects a change in capacitance generated in the touch sensor 22 due to the contact with the detection surface 21 such as a finger as a change in output voltage. To do. The control device 30 derives contact coordinates such as a finger based on information on the detected output voltage (or change in output voltage). The control device 30 outputs the derived information about the contact coordinates such as a finger to the outside.

  In addition, the control device 30 applies an AC signal to the proximity sensor 23. If the face or the like is close to the detection surface 21 at this time, the control device 30 detects the change in capacitance generated in the touch sensor 22 due to the proximity of the face or the like to the detection surface 21 as a change in output voltage. To do. The control device 30 determines whether or not the detection surface 21 is pushed by a finger or the like based on information on the detected output voltage (or change in output voltage). The control device 30 outputs information about the determination result to the outside.

[effect]
Next, effects of the display device 1 according to the present embodiment will be described. In the present embodiment, a plurality of proximity sensors 23 are provided in the frame area 21B. This not only prevents false detection, but also detects, for example, a large conductor that is difficult to detect with the touch sensor 22 in the display area 21A when the conductor is close to the detection surface 21. Can do. Here, unlike the infrared proximity sensor, the self-capacitance type sensor used as the proximity sensor 23 detects a window for emitting light for sensing or taking in external light. The proximity to the detection surface 21 can be detected even if it is not required to be provided on the surface 21 and is covered with the light shielding layers 62 and 85. Therefore, there is no possibility that the appearance impression is deteriorated by providing the proximity sensor 23. Further, unlike the infrared proximity sensor or the like, the proximity sensor 23 can be manufactured together with the touch sensor 22 using the manufacturing process of the touch sensor 22. For this reason, when manufacturing the proximity sensor 23, it is not necessary to increase the number of manufacturing steps or prepare a new member. Therefore, there is almost no increase in manufacturing cost due to the provision of the proximity sensor 23.

  As described above, in the present embodiment, since the plurality of proximity sensors 23 are provided in the frame region 21B, the appearance impression is good and the function of the proximity sensor can be implemented at low cost.

<3. Modification>
While the present technology has been described with reference to the embodiment, the present technology is not limited to the embodiment, and various modifications are possible.

[First Modification]
For example, in the above-described embodiment, the substrate 51 which is a formation substrate for the conductive layer 52 and the like is provided, but a light-transmissive insulating layer may be provided instead of the substrate 51. A first light transmissive member may be provided instead of the substrate 51, and a second light transmissive member may be provided instead of the substrate 61. At this time, the surface of the second light transmissive member opposite to the first light transmissive member forms a detection surface.

[Second Modification]
Further, for example, in the above embodiment, the proximity sensor 23 is provided. However, for example, as shown in FIG. 8, instead of the proximity sensor 23, a capacitive proximity sensor 28 is provided, and the IC 26 Instead, the IC 29 for driving each proximity sensor 28 may be provided. At this time, the high resistance element 27 of the above embodiment is not provided, and the proximity sensor 28 and the IC 29 are connected via the signal wiring 47.

  The proximity sensor 28 is a mutual capacitance type sensor. The plurality of proximity sensors 28 are distributed and arranged in at least two regions facing each other with at least the display region 21A in the frame region 21B. In FIG. 8, three proximity sensors 28 are arranged in one of two areas facing each other with the display area 21A in between, and one proximity sensor 28 is arranged in the other area. Has been. The touch sensor 22 and each proximity sensor 28 are configured to include one or a plurality of electrodes selected from a plurality of electrodes arranged in a common layer. Specifically, as shown in FIGS. 9, 10A, and 10B, the touch sensor 22 includes an X electrode 41 and a Y electrode 42, and each proximity sensor 28 Two electrodes 46A and 46B are disposed in the same layer as the electrode 41. The electrode 46A is a transmission electrode, and the electrode 46B is a reception electrode.

  As shown in FIGS. 8 and 9, the touch panel 20 includes the FPC 24 connected to the signal wiring 44 and the signal wiring 47. The FPC 24 has an IC 25 connected to the signal wiring 44 and an IC 29 connected to the signal wiring 47 on the surface thereof. The IC 29 applies a signal voltage to each electrode 46A and detects a capacitance value between the electrode 46A and the electrode 46B.

  For example, as shown in FIG. 10A, the touch panel 20 may be a bonded type in which a conductive layer forming substrate and a conductive layer protective substrate are provided separately, or FIG. As shown in B), an integrated type in which the conductive layer forming substrate and the conductive layer protective substrate are made common may be used.

  Next, the effect of the display device 1 of this modification will be described. In this modification, a plurality of proximity sensors 28 are provided in the frame area 21B. This not only prevents false detection, but also detects, for example, a large conductor that is difficult to detect with the touch sensor 22 in the display area 21A when the conductor is close to the detection surface 21. Can do. Here, unlike the infrared proximity sensor, the mutual capacitance type sensor used as the proximity sensor 28 detects a window for emitting light for sensing or taking in external light. The proximity to the detection surface 21 can be detected even if it is not required to be provided on the surface 21 and is covered with the light shielding layers 62 and 85. Therefore, there is no possibility that the appearance impression is deteriorated by providing the proximity sensor 28. Further, unlike the infrared proximity sensor, the proximity sensor 28 can be manufactured together with the touch sensor 22 using the manufacturing process of the touch sensor 22. Therefore, when manufacturing the proximity sensor 28, it is not necessary to increase the number of manufacturing steps or prepare a new member, so that the manufacturing cost is hardly increased by providing the proximity sensor 28.

  As described above, in the present embodiment, since the plurality of proximity sensors 28 are provided in the frame region 21B, the appearance impression is good and the function of the proximity sensor can be implemented at low cost.

<4. Application example>
Next, an application example of the display device 1 according to the above-described embodiment and its modification will be described. FIG. 11 is a perspective view illustrating an example of a schematic configuration of the electronic device 100 according to the application example. The electronic device 100 is a mobile phone, and includes, for example, a main body 111 and a display body 112 that can be opened and closed with respect to the main body 111 as shown in FIG. The main body 111 has operation buttons 115 and a transmitter 116. The display body unit 112 includes a display device 113 and a receiver unit 117. The display device 113 displays various displays related to telephone communication on the display screen 114 of the display device 113. Electronic device 100 includes a control unit (not shown) for controlling the operation of display device 113. This control unit is provided inside the main body 111 or the display body 112 as a part of the control unit that controls the entire electronic device 100 or separately from the control unit.

  The display device 113 has the same configuration as the display device 1 according to the above-described embodiment and its modification. Thereby, for example, when the user places the electronic device 100 on his / her ear to make a call, there is no possibility of malfunction even if the user's ear or cheek contacts the touch panel 22.

  Note that electronic devices to which the display device 1 according to the above-described embodiment and its modifications can be applied include personal computers, liquid crystal televisions, viewfinder types, or monitor direct-view types in addition to the cellular phones described above. Examples include a video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a workstation, a video phone, and a POS terminal.

For example, this technique can take the following composition.
(1)
The display area includes a touch sensor capable of detecting contact on the detection surface, and the frame area includes a plurality of proximity sensors capable of detecting proximity to the detection surface.
Each proximity sensor is a capacitive sensor.
(2)
The touch panel according to (1), wherein each of the touch sensor and each proximity sensor includes one or a plurality of electrodes selected from a plurality of electrodes arranged in a common layer.
(3)
Each proximity sensor is a self-capacitance type touch panel as described in (2).
(4)
The touch panel according to (3), further including a high-resistance element electrically connected to the electrode of the proximity sensor.
(5)
Each proximity sensor is a mutual capacitance type touch panel given in (2).
(6)
The touch panel according to any one of (1) to (5), further including a light shielding layer that prevents a silhouette of the proximity sensor from being visually recognized on the detection surface.
(7)
A video generation device for generating video;
A touch panel disposed on a surface of the video generation device;
A control device for controlling the video generation device and the touch panel;
The touch panel
The display area has a touch sensor capable of detecting contact on the detection surface, and the frame area has a plurality of proximity sensors capable of detecting proximity to the detection surface,
Each proximity sensor is a capacitance sensor.
(8)
A display device,
The display device
A video generation device for generating video;
A touch panel disposed on a surface of the video generation device;
A control device for controlling the video generation device and the touch panel;
The touch panel
The display area has a touch sensor capable of detecting contact on the detection surface, and the frame area has a plurality of proximity sensors capable of detecting proximity to the detection surface,
Each proximity sensor is a capacitance sensor.

  DESCRIPTION OF SYMBOLS 1 ... Display apparatus, 10 ... Video production | generation apparatus, 20 ... Touch panel, 21 ... Detection surface, 21A ... Display area, 21B ... Frame area, 22 ... Touch sensor, 23, 28 ... Proximity sensor, 24 ... FPC, 25, 26, 29 ... IC, 27 ... high resistance element, 30 ... control device, 41 ... X electrode, 42 ... Y electrode, 43, 46A, 46B ... electrode, 44, 45, 47 ... signal wiring, 50 ... wiring substrate, 51, 61 , 81 ... substrate, 52, 82 ... conductive layer, 53, 83, 84 ... insulating layer, 60 ... cover substrate, 62, 85 ... light shielding layer, 70 ... adhesive layer, 100 ... electronic device, 101 ... dielectric, 102, DESCRIPTION OF SYMBOLS 103 ... Electrode, 104, 109 ... Capacitance element, 105 ... AC signal source, 106 ... Voltage detection circuit, 107 ... Resistance, 108 ... Reference potential line, 111 ... Main-body part, 112 ... Display body part, 113 ... Display apparatus, 114 … Display picture , 115 ... operation button, 116 ... transmitter unit, 117 ... receiver unit, I0, I1, I2 ... current, Sg ... AC rectangular wave, Vdet ... detection signal, V0, V1 ... waveform, Vth ... threshold voltage.

Claims (6)

The display area includes a touch sensor capable of detecting contact on the detection surface, and the frame area includes a plurality of proximity sensors capable of detecting proximity to the detection surface.
Each proximity sensor is a self-capacitance type capacitive sensor including a high-resistance element electrically connected to an electrode . The touch panel according to claim 1, wherein the touch sensor and each proximity sensor include one or more electrodes selected from a plurality of electrodes arranged in a common layer. The touch panel according to claim 2, further comprising a light shielding layer that prevents the silhouette of the proximity sensor from being visually recognized on the detection surface.   The high resistance element is 1 MΩ.
  The touch panel according to claim 1. A video generation device for generating video;
A touch panel disposed on a surface of the video generation device;
A control device for controlling the video generation device and the touch panel;
The touch panel
The display area has a touch sensor capable of detecting contact on the detection surface, and the frame area has a plurality of proximity sensors capable of detecting proximity to the detection surface,
Each proximity sensor is a self-capacitance-type capacitance sensor including a high-resistance element electrically connected to an electrode . A display device,
The display device
A video generation device for generating video;
A touch panel disposed on a surface of the video generation device;
A control device for controlling the video generation device and the touch panel;
The touch panel
The display area has a touch sensor capable of detecting contact on the detection surface, and the frame area has a plurality of proximity sensors capable of detecting proximity to the detection surface,
Each proximity sensor is a self-capacitance type capacitive sensor including a high-resistance element electrically connected to an electrode .

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