WO2014181774A1 - 入力装置 - Google Patents

入力装置 Download PDF

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Publication number
WO2014181774A1
WO2014181774A1 PCT/JP2014/062172 JP2014062172W WO2014181774A1 WO 2014181774 A1 WO2014181774 A1 WO 2014181774A1 JP 2014062172 W JP2014062172 W JP 2014062172W WO 2014181774 A1 WO2014181774 A1 WO 2014181774A1
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WO
WIPO (PCT)
Prior art keywords
electrode
detection region
input device
detection
area
Prior art date
Application number
PCT/JP2014/062172
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
橋田　淳二
定雄 北野
舛本　好史
Original Assignee
アルプス電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to KR1020157032016A priority Critical patent/KR101717637B1/ko
Priority to CN201490000588.4U priority patent/CN205139862U/zh
Priority to JP2015515871A priority patent/JP5960353B2/ja
Publication of WO2014181774A1 publication Critical patent/WO2014181774A1/ja

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads

Definitions

  • the present invention relates to an input device, and more particularly, to an input device having two display screens connected so as to be foldable.
  • FIG. 11 shows a front view of a conventional information processing terminal disclosed in Patent Document 1.
  • FIG. 11 in an information processing terminal 117 of a conventional example, two casings 114 and 115 are connected to each other by a connecting part 116 such as a hinge mechanism so as to be opened and closed.
  • Each of the two casings 114 and 115 is provided with a display screen, and the input device 111 (refer to “Patent Document 1” in “Patent Document 1”) is provided so that an image displayed on the display screen and an input key can be directly operated.
  • Display / detection unit ”or“ touch panel ”), and the housing 115 is provided with an input device 112. That is, the information processing terminal 117 of the conventional example includes a first detection area 111 a corresponding to the input device 111 and a second detection area 112 a corresponding to the input device 112.
  • the screen is substantially enlarged with the housings 114 and 115 opened, and the input operation is possible in both the first detection area 111a and the second detection area 112a.
  • the casings 114 and 115 can be folded to reduce the size.
  • the information processing terminal 117 of the conventional example includes a contact sensor 113 between the input device 111 and the input device 112.
  • the third detection region 113a is provided between the first detection region 111a and the second detection region 112a, and an input operation in the region between the input device 111 and the input device 112 can be detected.
  • the information processing terminal 117 of the conventional example is provided with a contact sensor 113 separately between the input device 111 and the input device 112. Therefore, in order to control the input device 111, the input device 112, and the contact sensor 113, and to output the respective detection signals, it is necessary to provide three control units and perform different signal processing. Furthermore, it is necessary to process the input operation as a whole based on the output signals from the respective control units, requiring complicated signal processing steps. In addition, since the contact sensor 113 is disposed at a position overlapping the connecting portion 116, there is a problem that a drawing structure for drawing out a detection signal from the contact sensor 113 and a connection structure with an external control unit are complicated. Arise. *
  • the contact sensor 113 since the contact sensor 113 is provided separately from the input device 111 and the input device 112, the detection sensitivity of the contact sensor 113 and the detection sensitivity of the input device 111 and the input device 112 vary. Cheap. Further, since the contact sensor 113 is disposed at a position overlapping the connecting portion 116, the detection of the input device 111 and the input device 112 is caused by the structure and material of each member such as the casings 114 and 115 and the connecting portion 116. Variation in detection sensitivity of the contact sensor 113 occurs with respect to sensitivity. Further, the vertical position must be aligned between the input devices 111, 112, and 113, and the alignment process during assembly is complicated.
  • the present invention solves the above-described problems, and detects an input operation between a plurality of detection regions that can be folded open and closed with a simple configuration and processing method, and can suppress variations in detection sensitivity.
  • the purpose is to provide.
  • the input device includes a first front panel, a second front panel, a connecting portion that foldably connects the first front panel and the second front panel, and the first front panel.
  • a surface sensor and a film sensor provided continuously across the second surface panel, the film sensor having a first detection region, a second detection region, and a third detection region.
  • the first detection region is provided at a position facing the first surface panel
  • the second detection region is provided at a position facing the second surface panel
  • the third detection region is It is located between the first detection area and the second detection area.
  • the first detection area and the second detection area are provided so that they can be folded and opened, and the first detection area, the second detection area, and the third detection area are one continuous film. It is provided in the sensor. Therefore, it is possible to detect an input operation in the third detection region between the first detection region and the second detection region with a simple configuration, compared to the case where an input device is provided individually for each region. Become. Moreover, since it can detect with a common film sensor, compared with the case where an input device is provided separately, it is easy to suppress the detection sensitivity dispersion
  • the input device of the present invention it is possible to detect an input operation between a plurality of detection areas that can be folded and opened and to suppress variations in detection sensitivity with a simple configuration and processing method.
  • a plurality of first electrodes are provided in the first detection region, a plurality of second electrodes are provided in the second detection region, and the third detection region is provided. It is preferable that a plurality of third electrodes are arranged in the first electrode, and an area of the third electrode is different from an area of the first electrode or the second electrode. According to this, when the film sensor bends or bulges when the input device is open during an input operation, the area of the third electrode in the third detection region is made different, so The capacitance formed between the three electrodes changes. That is, the difference between the capacitance formed between the detected object and the first electrode or the second electrode and the capacitance formed between the detected object and the third electrode is reduced. be able to. Therefore, variation in detection sensitivity between the third detection region and the first detection region or the second detection region can be suppressed.
  • an area of the third electrode is larger than an area of the first electrode or the second electrode. According to this, it is possible to increase the electrostatic capacitance between the third electrode and the detection target that performs the input operation. Therefore, even when the film sensor is bent and the distance between the third detection region and the detected object is increased and the detection sensitivity is apparently reduced, the area of the third electrode is increased to increase the detection sensitivity. Reduction can be suppressed. Therefore, variation in detection sensitivity between the detection regions can be suppressed.
  • the input device may be configured such that, in a plan view in a state where the film sensor is opened, a direction parallel to the folding opening / closing axis of the connecting portion is a first direction, and a direction intersecting the first direction is a second direction.
  • a direction parallel to the folding opening / closing axis of the connecting portion is a first direction
  • a direction intersecting the first direction is a second direction.
  • the direction is set, a plurality of the third electrodes are arranged in the second direction in the third detection region, and the third detection region is arranged at the center of the third direction in the second direction. It is preferable that the area of the third electrode thus formed is larger than the area of the third electrode arranged at the edge of the third detection region. According to this, when the film sensor is bent, variation in detection sensitivity in the third detection region is suppressed by changing the third electrode area according to the amount of bending of the third detection region. be able to.
  • the third electrode is electrically connected to the first electrode or the second electrode, or the third electrode is the first electrode or the second electrode. It is preferable that the capacitor is capacitively coupled. According to this, the third electrode forms a common electrode pattern together with the first electrode and the second electrode, and the entire first detection region, second detection region, and third detection region are formed. Can be detected as one electrode pattern, so that control and signal processing can be easily performed.
  • the first electrode, the second electrode, and the third electrode are individually connected to a lead wiring. According to this, since each electrode is independent from each other, that is, the interference between the electrodes is suppressed and the input operation is determined, it can be detected with high accuracy.
  • the third electrode has any one of Ag nanowires, Ag nanotubes, carbon nanotubes, and PEDOT. According to this, since the third electrode has flexibility, even when the folding open / close operation is repeated, the occurrence of cracks and the like of the third electrode is prevented, and the decrease in detection sensitivity is suppressed. be able to.
  • the first front panel and the second front panel are bonded to one surface of the front and back surfaces of the film sensor, and a display element is disposed on the other surface of the front and back surfaces of the film sensor. It is preferable that the display element is provided continuously over the first detection area, the second detection area, and the third detection area. According to this, the detection signal processing of the first detection region, the second detection region, and the third detection region can be performed in accordance with the image processing of the display element, and the input signal processing can be easily performed. It can be performed.
  • the input device of the present invention it is possible to detect an input operation between a plurality of detection regions that can be folded and opened and to suppress variations in detection sensitivity with a simple configuration and processing method.
  • FIG. 3B is a partially enlarged cross-sectional view of the input device as viewed from the direction of the arrow cut along the line III (b) -III (b) in FIG. It is the elements on larger scale of the film sensor which comprises the input device of this embodiment.
  • FIG. 5 is a partial enlarged cross-sectional view of the input device as viewed from the direction of the arrow cut along the line VV in FIG. 4.
  • the input device of the 1st modification of this embodiment is shown, and the partial expanded plan view of a film sensor is shown.
  • the input device of a 2nd modification is shown and the partial enlarged plan view of a film sensor is shown.
  • the input device of a 3rd modification is shown and the partial expanded plan view of a film sensor is shown.
  • (A) The input device of the 4th modification is shown, and sectional drawing at the time of folding is shown.
  • (B) About the input device of the 4th modification, the partial expanded sectional view of the open state is shown.
  • the input device of a 5th modification is shown and sectional drawing at the time of folding is shown. It is a top view of the information processing terminal of a prior art example.
  • FIG. 1 shows a perspective view when the information processing terminal on which the input device of this embodiment is mounted is folded.
  • FIG. 2 similarly shows a perspective view of the information processing terminal in the opened state.
  • the information processing terminal 16 includes two casings 24 and 25 and a connecting portion 26.
  • the two casings 24 and 25 are connected to each other by a connecting part 26 such as a hinge mechanism so as to be folded and opened.
  • the casings 24 and 25 incorporate an input device 10 that displays a display image and allows an input operation while visually recognizing the display image.
  • the input device 10 includes two surface panels 21 and 22, and the first surface panel 21 is incorporated in the housing 24 and the second surface panel 22 is incorporated in the housing 25.
  • the casings 24 and 25 when the casings 24 and 25 are folded and closed, the first surface panel 21 and the second surface panel 22 are also folded and stored in the casings 24 and 25. . As shown in FIG. 2, when the casings 24 and 25 are opened, the first front panel 21 and the second front panel 22 are exposed, and two-screen image display and input operations are possible. Therefore, when carrying the information processing terminal 16, the casings 24 and 25 can be folded to reduce the size, and when used, the casings 24 and 25 can be opened to increase the detection area and the display screen. .
  • FIG. 3 (a) shows a cross-sectional view of the input device 10 when viewed from the arrow method by cutting along line III (a) -III (a) in FIG.
  • FIG. 3B shows a partially enlarged cross-sectional view of the input device 10 as viewed from the arrow method by cutting along line III (b) -III (b) in FIG. 3A is a cross-sectional view of the input device 10 in a closed state
  • FIG. 3B is a partially enlarged cross-sectional view of the vicinity of the connecting portion 26 in an open state.
  • 3A and 3B show only the input device 10 of the present embodiment, and the casings 24 and 25 are omitted.
  • the input device 10 of the present embodiment includes a first surface panel 21, a second surface panel 22, a connecting portion 26, a film sensor 30, and the like. It is comprised.
  • the 1st surface panel 21 and the 2nd surface panel 22 are connected so that folding is possible via the connection part 26.
  • the film sensor 30 is continuously provided across the first surface panel 21 and the second surface panel 22.
  • the film sensor 30 is bonded to the first surface panel 21 via the adhesive layer 45 and the second surface panel via the adhesive layer 46. 22 is attached. As a result, the film sensor 30 can be folded and opened along with the folding opening / closing operation of the first surface panel 21 and the second surface panel 22.
  • the film sensor 30 has a first detection region 31a, a second detection region 31b, and a third detection region 31c.
  • the first detection region 31a is provided at a position facing the first surface panel 21, and an operator brings a detected object such as a finger close to the first surface panel 21 or without bringing it into contact therewith. The input position is detected.
  • the second detection region 31b is provided at a position facing the second front panel 22, and detects an input operation to the second front panel 22.
  • the third detection region 31c is provided so as to overlap the connecting portion 26 between the first detection region 31a and the second detection region 31b.
  • the third detection region 31c is provided continuously between the first detection region 31a and the second detection region 31b, and is between the first surface panel 21 and the second surface panel 22. The input operation at can be detected.
  • the first detection region 31a and the second detection region 31b are provided so as to be foldable and openable, and the first detection region 31a, the second detection region 31b, and the third detection region are provided.
  • a region 31 c is provided in one continuous film sensor 30. Therefore, the input operation in the third detection region 31c between the first detection region 31a and the second detection region 31b can be performed with a simple configuration as compared with the case where an input device is provided corresponding to each region. It can be detected.
  • the detection can be performed by the common film sensor 30, it is easy to suppress the detection sensitivity variation between the detection regions 31a, 31b, and 31c as compared with the case where an input device is individually provided in each detection region. It is.
  • region 31a, 31b, 31c is provided in the continuous film sensor 30 of 1 sheet, the detection signal from each detection area
  • the input device 10 of the present invention it is possible to detect an input operation between the first detection region 31a and the second detection region 31b that can be folded and opened with a simple configuration and processing method, and to detect sensitivity. Can be suppressed.
  • FIG. 4 shows a partially enlarged plan view of the film sensor 30 constituting the input device 10 of the present embodiment.
  • the film sensor 30 includes a base material 40 and a plurality of electrodes provided on the base material 40.
  • the third detection region 31c is disposed between the first detection region 31a and the second detection region 31b in the X1-X2 direction. Is done.
  • a plurality of first electrodes 34 are arranged in the first detection region 31a
  • a plurality of second electrodes 35 are arranged in the second detection region 31b
  • a third detection region 31c is arranged in the third detection region 31c.
  • a plurality of third electrodes 36 are arranged.
  • the first electrodes 34 arranged in the Y1-Y2 direction are connected by a connecting portion 37.
  • the second electrode 35 and the third electrode 36 arranged in the Y1-Y2 direction are connected by a connection portion 37.
  • the first electrode 34, the second electrode 35, and the third electrode 36 arranged in the X1-X2 direction are connected by a bridge portion 38.
  • the connecting portion 37 and the bridge portion 38 are formed so as to intersect with each other in plan view, and are connected in the Y1-Y2 direction with the electrodes 34, 35, 36 connected in the X1-X2 direction.
  • FIG. 5 is a partially enlarged cross-sectional view of the input device taken along the line VV in FIG. 4 and viewed from the direction of the arrow. It expands and shows.
  • an insulating layer 39 is provided so as to cover the connecting portion 37, and the bridge portion 38 straddles the connecting portion 37 and the insulating layer 39 to connect the first electrodes 34 to each other. Connect in the X2 direction.
  • a capacitance is formed.
  • an object to be detected such as a finger is brought into contact with or close to the first surface panel 21, the second surface panel 22, or the first surface panel 21 and the second surface panel 22 during an input operation, the electrodes 34 , 35, and 36, the capacitance changes, whereby the input position is detected.
  • the film sensor 30 of the present embodiment is a capacitive film sensor 30.
  • a lead wire 41 is connected to each of the electrodes 34, 35 and 36 connected in the X1-X2 direction or the Y1-Y2 direction.
  • the lead wiring 41 is formed in the non-detection region 32 and is connected to an external control unit (not shown).
  • the third detection region 31c of the film sensor 30 is convex downward (Z2 direction), which is the opposite direction to the input surface 10c. Are formed so as to be bent.
  • Z2 direction the opposite direction to the input surface 10c.
  • region 31c of the film sensor 30 long on the mechanism of the connection part 26.
  • FIG. That is, it is necessary to form the film sensor 30 longer than the total length of the first front panel 21, the second front panel 22, and the connecting portion 26. Therefore, since the film sensor 30 is formed long, bending occurs when the input device 10 is opened.
  • the area of the third electrode 36 is formed different from the area of the first electrode 34 or the second electrode 35, and the first electrode 34 is formed. Alternatively, it is formed larger than the area of the second electrode 35.
  • the film sensor 30 is bent or swollen during the input operation.
  • the magnitude of the capacitance formed between the detection object and the third electrode 36 can be changed. That is, as shown in FIG. 4, when the area of the third electrode 36 is increased, the capacitance between the detection target for performing the input operation and the third electrode 36 can be increased. Therefore, the capacitance formed between the detection target and the first electrode 34 or the second electrode 35 and the capacitance formed between the detection target and the third electrode 36 The difference can be reduced.
  • the area of the third electrode 36 is increased to improve the detection sensitivity. Variation in detection sensitivity between the first detection region 31a and the first detection region 31a or the second detection region 31b can be suppressed.
  • the base material 40 is made of a flexible film-like resin material so that it can be folded and opened.
  • translucent resin materials such as polycarbonate resin (PC), polyethylene terephthalate resin (PET), polyethylene naphthalate resin (PEN), cyclic polyolefin (COP), and polymethyl methacrylate resin (PMMA) are used.
  • the third electrode 36 formed in the third detection region 31c is preferably formed using one of Ag nanowires, Ag nanotubes, carbon nanotubes, and PEDOT.
  • the third electrode 36 has flexibility, even when the folding open / close operation is repeated, cracks, disconnections, and the like can be prevented, and a decrease in detection sensitivity can be suppressed. it can.
  • the third electrode 36 not only the third electrode 36 but also the first electrode 34 and the second electrode 35 are practically formed using the same material such as Ag nanowire as the third electrode 36.
  • the third electrode 36 is electrically connected to the first electrode 34 or the second electrode 35.
  • the third electrode 36 is capacitively coupled to the first electrode 34 or the second electrode 35. That is, the third electrode 36 is connected to the first electrode 34 and the second electrode 35 via the connection part 37 and the bridge part 38, and forms a common electrode pattern in the entire film sensor 30. Accordingly, since the entire first detection region 31a, second detection region 31b, and third detection region 31c can be detected by one electrode pattern, control and signal processing can be easily performed.
  • each electrode 34, 35, 36 is each formed in the rhombus shape, it is not limited. For example, the same effect can be obtained even with electrode shapes such as a rectangle, a polygon, and a circle.
  • the input device 10 of the present embodiment includes a film sensor 30 in which a first surface panel 21 and a second surface panel 22 are bonded to one surface of the front and back surfaces of the film sensor 30.
  • the display element 51 is bonded to the other surface of the front and back surfaces of 30.
  • the display element 51 is provided continuously over the first detection region 31a, the second detection region 31b, and the third detection region 31c.
  • an OLED (Organic Light Emitting Diode) display or the like can be used as the display element 51.
  • the display element 51 can be folded and opened together with the first front panel 21, the second front panel 22, and the film sensor 30.
  • it is easy to match the detection signal processing of the first detection region 31a, the second detection region 31b, and the third detection region 31c with the image processing of the display element 51, and the film sensor 30.
  • the display element 51 can be easily controlled.
  • FIG. 6 shows the input device 10 of the first modification of the present embodiment, and shows a partially enlarged plan view of the film sensor 30.
  • a direction parallel to the folding opening / closing axis of the connecting portion 26 is defined as a first direction (Y1-Y2 direction), and a direction intersecting the first direction is defined as a second direction (X1- X2 direction).
  • a plurality of third electrodes 36 are arranged in the second direction (X1-X2 direction) in the third detection region 31c.
  • the area of the third electrode 36b arranged at the center of the third detection region 31c in the second direction is at the edge of the third detection region 31c in the second direction. It is larger than the area of the arranged third electrodes 36a, 36c.
  • the third electrode 36 of the present modification is formed by varying the area 36 of the third electrode in accordance with the amount of deflection of the film sensor 30, thereby varying the detection sensitivity between the third electrodes 36. Can be suppressed.
  • FIG. 3B in a state where the input device 10 is opened, the film sensor 30 in the third detection region 31c is bent and deformed downward (Z2 direction). The distance between the input surface 10c and the film sensor 30 increases from the edge of the third detection region 31c in the X1-X2 direction toward the center, and the center of the third detection region 31c in the X1-X2 direction increases. The distance becomes the largest in the part.
  • the third electrode 36b is formed in a larger area than the third electrodes 36a and 36c, as shown in FIG. 6, in accordance with the difference in distance between the input surface 10c and the film sensor 30. This reduces variations in capacitance formed between the third electrodes 36a, 36b, and 36c and the detection target, thereby suppressing variations in detection sensitivity in the third detection region 31c. it can.
  • FIG. 7 shows an input device of a second modification of the present embodiment, and shows a partially enlarged plan view of the film sensor.
  • the first electrode 34, the second electrode 35, and the third electrode 36 are individually connected to the lead wiring 42.
  • the lead-out wiring 42 is routed through the non-detection area 32 outside the detection areas 31a, 31b, and 31c, and is connected to a control unit such as an external IC. Therefore, the first electrode 34, the second electrode 35, and the third electrode 36 are independently connected in parallel to the external control unit.
  • the plurality of third electrodes 36 are connected to the same control unit as the first electrode 34 and the second electrode 35 and are subjected to signal processing, individual input operations for the third detection region 31c are performed individually. There is no need to provide a control unit for signal processing. Further, since the electrodes 34, 35, and 36 are prevented from electrically interfering with each other, it is possible to improve the detection accuracy of the position where the input operation is performed.
  • FIG. 8 shows an input device of a third modification of the present embodiment, and shows a partially enlarged plan view of the film sensor.
  • the film sensor 30 shown in FIGS. 4, 5, and 7 is formed by increasing the area of each of the plurality of third electrodes 36 relative to the area of each of the first electrode 34 and the second electrode 35.
  • a large number of third electrodes 36 are formed, that is, the ratio of the total area of the third electrodes 36 to the area of the third detection region 31c is equal to that of the first detection region 31a.
  • FIG. 9 shows an input device according to a fourth modification of the present embodiment
  • FIG. 9A is a sectional view of the input device in a folded state
  • FIG. 9B is an input device in the opened state.
  • the input device 10 of this modification has a first display element 52 attached to the first detection region 31 a of the film sensor 30 via an adhesive layer 47.
  • the second display element 53 is bonded to the second detection region 31 b of the film sensor 30 via the adhesive layer 48. That is, the first display element 52 is provided at a position facing the first front panel 21, and the second display element 53 is provided at a position facing the second front panel 22.
  • the first display element 52 or the second display element 53 is not overlapped on the back surface side, so that the opening shown in FIG. In this state, the film sensor 30 is easily bent. Therefore, when the third electrode 36 (not shown in FIG. 9) is formed with the same area as the first electrode 34 and the second electrode 35, the third electrode 36 is interposed between the detected object and the third electrode 36. Since the capacitance formed is reduced, the detection sensitivity in the third detection region 31c is likely to be lowered. Therefore, as shown in FIGS. 4 and 6 to 8, in the third detection region 31c, the area of the third electrode 36 is made larger than the areas of the first electrode 34 and the second electrode 35. The detection sensitivity variation can be effectively suppressed, and variations in detection sensitivity can be reduced.
  • FIG. 10 shows an input device of a fifth modification of the present embodiment, and shows a sectional view when folded.
  • the input device 10 of the present modification is different in that the first surface panel 21 and the second surface panel 22 face the outside in a folded state.
  • a film sensor 30 is bonded to the back side of the first front panel 21 and the back side of the second front panel 22.
  • the third detection region 31c of the film sensor 30 is curved so as to protrude toward the input surfaces 10a to 10c.
  • the area of the third electrode 36 in the third detection region 31c is made smaller than that of the first electrode 34 or the second electrode 35, so that By reducing the value of the capacitance formed between the detection body and the first detection region 31a, the second detection region 31b, and the third detection region 31c, variations in detection sensitivity can be suppressed.

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  • General Engineering & Computer Science (AREA)
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PCT/JP2014/062172 2013-05-08 2014-05-02 入力装置 WO2014181774A1 (ja)

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EP3410270A3 (en) * 2017-06-01 2018-12-12 LG Display Co., Ltd. Touch display device and touch display panel
WO2019031062A1 (ja) * 2017-08-08 2019-02-14 アルプス電気株式会社 入力装置
JP2020030867A (ja) * 2013-06-21 2020-02-27 株式会社半導体エネルギー研究所 情報処理装置
WO2022049943A1 (ja) * 2020-09-04 2022-03-10 株式会社ワコム 位置検出装置

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KR20210000359A (ko) 2019-06-24 2021-01-05 삼성디스플레이 주식회사 표시 장치

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JP2020095736A (ja) * 2013-06-21 2020-06-18 株式会社半導体エネルギー研究所 情報処理装置
JP2015046165A (ja) * 2013-08-27 2015-03-12 エルジー イノテック カンパニー リミテッド タッチウィンドウ及びこれを含むタッチデバイス
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WO2019031062A1 (ja) * 2017-08-08 2019-02-14 アルプス電気株式会社 入力装置
WO2022049943A1 (ja) * 2020-09-04 2022-03-10 株式会社ワコム 位置検出装置

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KR20150140365A (ko) 2015-12-15
JP5960353B2 (ja) 2016-08-02
KR101717637B1 (ko) 2017-03-17
CN205139862U (zh) 2016-04-06

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