WO2017029860A1 - 静電容量式入力装置 - Google Patents
静電容量式入力装置 Download PDFInfo
- Publication number
- WO2017029860A1 WO2017029860A1 PCT/JP2016/066728 JP2016066728W WO2017029860A1 WO 2017029860 A1 WO2017029860 A1 WO 2017029860A1 JP 2016066728 W JP2016066728 W JP 2016066728W WO 2017029860 A1 WO2017029860 A1 WO 2017029860A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- electrodes
- detection
- switched
- input device
- Prior art date
Links
Images
Classifications
-
- 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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- 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
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
-
- 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
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
- G06F3/041662—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving using alternate mutual and self-capacitive scanning
-
- 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
- G06F3/0447—Position sensing using the local deformation of sensor cells
-
- 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
- G06F2203/04101—2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
Definitions
- a plurality of electrodes arranged along the X direction and the Y direction are arranged on the substrate.
- a plurality of electrodes arranged along the X direction (hereinafter referred to as electrode group A) are electrically connected to each other and a plurality of electrodes arranged along the Y direction (hereinafter referred to as electrode group B). ) are electrically connected to each other, and the electrode group A and the electrode group B intersect with each other in an insulated state through an insulating layer.
- a capacitance is formed between the electrode of the electrode group A and the electrode of the electrode group B, and the operating body is When contacting or approaching the detection electrode, the capacitance between the electrode of the electrode group A and the electrode of the electrode group B and the capacitance formed between each electrode and the operating body are combined. Position information of the operating tool is obtained based on the change in capacitance.
- conductive films are formed on the upper and lower surfaces of the base material, and the upper conductive film is provided with a plurality of electrode portions arranged in a matrix.
- the film is provided with a plurality of electrode portions arranged so as to correspond to the plurality of electrode portions provided in the upper conductive film.
- the plurality of electrode portions provided on the lower conductive film are electrically connected to each other, and further, the lower conductive film constitutes a ground, and is affected by radiation noise from below the lower conductive film. Functions as a shield layer that reduces the effect of the sensor on the sensor.
- the capacitance formed between the electrode part and the ground changes. The position information of the operating tool can be obtained based on the change in the position.
- the present invention can accurately detect the position information of the operating body approaching or contacting the surface panel, and can reliably detect that the pressing force is applied to the surface panel and the magnitude of the pressing force. It is an object of the present invention to provide a capacitive input device that can be used.
- the first detection state for detecting whether or not the pressing force is applied to the electrodes, or the magnitude of the pressing force, and the operating body.
- the detection is highly sensitive and highly accurate in any detection state without increasing the distance between the first base material and the second base material. It is possible to provide a capacitance type input device capable of performing the above.
- one of the first electrode and the second electrode is simultaneously switched to the drive unit and the other is switched to the detection unit in all counter electrode pairs. Is preferred. Thereby, it is possible to reliably detect whether or not the pressing force is applied or the magnitude of the pressing force.
- the capacitance-type input device of the present invention in the first detection state, it is preferable that one of the first electrode and the second electrode is switched to the drive unit and the other is switched to the detection unit for each counter electrode pair. .
- the drive voltage is applied to all the counter electrode pairs simultaneously.
- the opposing electrode pairs in which both the first electrode and the second electrode are switched to the drive unit are sequentially switched. Thereby, it becomes possible to detect all the areas where the electrodes are provided on the first and second substrates.
- the first electrode and the second electrode are both switched to the drive unit and the detection unit and detected by the detection unit in any counter electrode pair. It is preferable that the coordinates are detected by a change in self-capacitance. This eliminates the need to perform detection with a counter electrode pair different from the counter electrode pair connected to the drive unit as in the case of detection by mutual capacitance, and it is not necessary to sequentially switch the counter electrode pair. It can be performed.
- the opposing surfaces of the first electrode and the second electrode forming the opposing electrode pair have the same planar shape. Therefore, since the approach of the operating body, contact, and pressing, and the magnitude of the pressing can be detected in the entire region corresponding to the electrode, detection can be performed quickly and reliably.
- the first base material and the second base material face each other via an elastic member. Therefore, the electrostatic capacitance when there is no operation by the operating body can be made constant, and stable detection processing can be performed.
- the present invention it is possible to detect the approach or contact of the operating body with respect to the front panel, and to detect that the pressing force is applied to the front panel and the magnitude of the pressing force. Can be provided.
- FIG. 1 It is a figure which shows electrode arrangement
- A) is sectional drawing which shows the structure of the sensor part of the capacitive input device shown in FIG. 1
- (B) is sectional drawing which shows the structure of the sensor part of the capacitive input device which concerns on a modification.
- FIG. 2B is a cross-section showing the configuration of the sensor unit 30a of the capacitance-type input device according to the modification.
- FIG. FIG. 3 is a functional block diagram of the capacitive input device 10.
- illustration of the 1st base material 15a, the optical adhesive member 16, and the 2nd base material 15b is abbreviate
- 2 is a cross-sectional view taken along the line AA in FIG.
- XYZ coordinates are shown.
- the Z direction is the vertical direction
- the XY plane is a plane perpendicular to the Z direction.
- the operating body is an operator's finger, hand, or stylus that operates the capacitive input device 10.
- the capacitive input device 10 includes a sensor unit 10 a and a calculation unit 20.
- the sensor unit 10 a includes four counter electrode pairs 11, 12, 13, and 14. These counter electrode pairs 11, 12, 13, and 14 are respectively composed of a first electrode and a second electrode that face each other in the vertical direction (Z direction).
- the counter electrode pair 11 includes an upper first electrode 11a and a lower second electrode 11b
- the counter electrode pair 12 includes an upper first electrode 12a and a lower second electrode 12b
- the counter electrode pair 13 is composed of an upper first electrode 13a and a lower second electrode 13b
- the counter electrode pair 14 is composed of an upper first electrode 14a and a lower second electrode 14b.
- the number of counter electrode pairs is four, but it can be set to a different number depending on the size, detection accuracy, etc. of the capacitance type input device.
- the first electrodes 11a, 12a, 13a, and 14a are arranged in a matrix of 2 rows and 2 columns on the upper surface 151 of the first base material 15a as the surface panel in a plan view. Further, it is formed by a thin film method such as sputtering or vapor deposition using a transparent conductive material such as ITO (Indium Tin Oxide), SnO 2 , or ZnO.
- the second electrodes 11b, 12b, 13b, and 14b are formed on the lower surface 152 of the second base material 15b so as to face the first electrodes 11a, 12a, 13a, and 14a, respectively.
- first electrodes 11a, 12a, 13a, and 14a and the second electrodes 11b, 12b, 13b, and 14b may be made of an opaque conductive material such as a metal layer, silver paste, or conductive nanowire.
- the first electrodes 11a, 12a, 13a, and 14a and the second electrodes 11b, 12b, 13b, and 14b have a square planar shape when viewed from above, and the areas thereof are the same. Yes. Further, in each of the counter electrode pairs 11, 12, 13, and 14, the first base material 15a and the second base material 15b are arranged so that the first electrode and the second electrode facing each other completely overlap each other when viewed from the vertical direction. The position and orientation at are adjusted respectively.
- the four first electrodes 11a, 12a, 13a, and 14a preferably have the same planar shape
- the four second electrodes 11b, 12b, 13b, and 14b preferably have the same planar shape.
- the planar shapes may not be the same as each other, and may be similar shapes having different areas.
- the facing area of a predetermined size or more can detect the distance between the first electrode and the second electrode, which are the pair of counter electrodes, and the operating body approaches or comes into contact with the detection output from each pair of counter electrodes.
- the first electrode and the second electrode that are the counter electrode pair include a plane shape center of the first electrode in the plane direction of the first base material 15a and the second base material 15b, that is, the direction including the XY plane. It is preferable that they face each other.
- the first base material 15a and the second base material 15b have substantially the same plane area, and are non-conductive optical adhesive members (elastic members). OCA) 16 are arranged so as to face each other vertically.
- the first base material 15 a and the second base material 15 b are made accessible by the elasticity of the optical adhesive member 16.
- the first base material 15a is not deformed only by touching an operator's finger or hand, but has elasticity enough to bend when pressed by the finger or hand, and is made of plastic or the like.
- the second base material 15b is made of a hard material, for example, plastic or glass, and is fixed to a device to which the capacitive input device 10 is applied, for example, a liquid crystal panel.
- the first electrodes 11a, 12a, 13a, and 14a are connected to the multiplexer 21 of the arithmetic unit 20 by wirings 18a, 18c, 18e, and 18g, respectively.
- These wirings 18a, 18c, 18e, and 18g are respectively formed on the upper surface 151 of the first base material 15a by ITO, silver paste, conductive nanowires, or the like.
- the second electrodes 11b, 12b, 13b, and 14b are connected to the multiplexer 21 of the arithmetic unit 20 by wirings 18b, 18d, 18f, and 18h, respectively. These wirings 18b, 18d, 18f, and 18h are formed on the lower surface 152 of the second base material 15b by ITO, silver paste, conductive nanowires, or the like.
- the calculation unit 20 includes a multiplexer 21, a drive circuit 22 as a drive unit, a detection circuit 23 as a detection unit, and a control unit 24.
- the multiplexer 21 and the control unit 24 constitute a switching unit.
- the multiplexer 21 switches the first electrodes 11a, 12a, 13a, and 14a and the second electrodes 11b, 12b, 13b, and 14b to the drive circuit 22 and the detection circuit 23, respectively, according to the instruction signal from the control unit 24.
- the capacitive input device 10 is switched to either the first detection state or the second detection state.
- the order of switching between the first detection state and the second detection state, the time interval, and the like are determined in advance based on the specifications of the capacitance-type input device 10 and stored in the storage unit included in the control unit 24. Has been.
- data related to detection state switching described below is also stored in a storage unit included in the control unit 24.
- Switching between the first detection state and the second detection state is performed by the multiplexer 21 based on the control of the control unit 24 each time the time allocated to each detection state elapses. Confirmation of the passage of time is performed according to an output signal from a clock unit built in the control unit 24.
- the state may be maintained until a predetermined operation is performed by the operator, and the detection state may be switched when the predetermined operation is performed. Therefore, as long as the predetermined operation is not performed, the current detection state may be maintained. This enables efficient detection processing. Further, one detection state may be maintained until a predetermined operation is performed, and the other detection state may be switched when a predetermined time has elapsed regardless of the operation.
- the first electrodes 11a, 12a, 13a, and 14a are connected to the drive circuit 22 by the multiplexer 21 based on the control of the control unit 24, and the second electrodes 11b, 12b, and 13b are connected. , 14 b are connected to the detection circuit 23.
- a rectangular-wave drive voltage having a fixed period is simultaneously applied to all of the first electrodes 11a, 12a, 13a, and 14a as drive electrodes.
- an electric current flows at the rise and fall timing of the rectangular wave applied to the drive electrode.
- the control unit 24 determines whether or not a pressing force is applied to the first electrode by the operating body based on the distance change amount. More specifically, the control unit 24 determines that a pressing force has been applied when the distance change amount is greater than a predetermined numerical value (threshold value). Further, it is possible to detect the magnitude of change in the pressing force. The magnitude of the pressing force can be detected as an analog value regardless of the definition of the threshold value.
- the multiplexer 21 constitutes one counter electrode pair of the four counter electrode pairs 11, 12, 13, 14. Both the electrode and the second electrode are connected to the drive circuit 22, and the plurality of first electrodes and the plurality of second electrodes constituting the other counter electrode pair are all connected to the detection circuit 23.
- the first electrode 11a and the second electrode 11b constituting the counter electrode pair 11 are connected to the drive circuit 22, and the first electrodes 12a, 13a, 14a and the second electrode constituting the counter electrode pair 12, 13, 14 are used. 12b, 13b, and 14b are connected to the detection circuit 23.
- a rectangular-wave drive voltage having a fixed period is simultaneously applied to the first electrode and the second electrode as drive electrodes connected to the drive circuit 22.
- the amount of current changes when the operating body approaches or comes into contact with any one of the detection electrodes, a change in capacitance (mutual capacitance) between the drive electrode and the detection electrode can be detected, Based on the current change in each detection electrode, it is possible to detect the coordinates at which the operating body approaches or contacts the plurality of first electrodes 12a, 13a, and 14a arranged on the upper surface 151 of the first base material 15a.
- the counter electrode pair to which the drive voltage is applied is switched every predetermined time in the second detection state, the operating body approaches all the areas where the first electrodes 11a, 12a, 13a, and 14a are arranged. Or the coordinate which touched can be detected.
- the capacitance when there is no operation by the operating body can be made constant. , Stable detection can be performed.
- the optical adhesive member 16 is disposed between the first base material 15a and the second base material 15b.
- the nonconductive material is sandwiched between the first base material 15a and the second base material 15b.
- the elastic elastic member is not limited to this.
- a polymer material (elastomer) exhibiting rubber elasticity at room temperature is formed as a plate having the same plane area as the first base material 15a and the second base material 15b. You may arrange
- a plurality of hemispherical elastic parts 36 having the same height and made of the same material are provided.
- the first base material 15a and the second base material 15b may be arranged at regular intervals.
- a space 37 is formed between the plurality of elastic portions 36, and the elasticity of the elastic portion 36 makes the first base material 15a and the second base material 15b accessible in the vertical direction, and the space 37 is formed.
- the deformation amount of the elastic portion 36 can be sufficiently secured, and the deformed elastic portion 36 does not protrude from the region sandwiched between the first base material 15a and the second base material 15b.
- the drive voltage is simultaneously applied to all of the first electrodes 11a, 12a, 13a, and 14a in the first detection state.
- the second electrode serving as the detection electrode is an electrode constituting a counter electrode pair with the first electrode to which the drive voltage is applied.
- both the first electrode and the second electrode constituting one counter electrode pair of the four counter electrode pairs 11, 12, 13, and 14 are provided.
- the mutual capacitance was detected using a plurality of first electrodes and a plurality of second electrodes constituting the other counter electrode pair as the detection electrodes.
- the capacity may be detected.
- one or more of the four counter electrode pairs 11, 12, 13, and 14 are driven to both the first electrode and the second electrode constituting the counter electrode pair.
- the circuit 22 and the detection circuit 23 are connected.
- the electrode to which the drive circuit 22 is connected has a stray capacitance, and charges are stored from the drive circuit 22.
- both the drive and detection can be performed by the counter electrode pair to which the drive circuit 22 and the detection circuit 23 are connected. Therefore, unlike the detection by mutual capacitance, the counter electrode pair connected to the drive unit is different. Since it is not necessary to perform detection with the counter electrode pair and it is not necessary to sequentially switch the counter electrode pair, the detection can be easily performed.
- the first electrodes 11a, 12a, 13a, and 14a and the second electrodes 11b, 12b, 13b, and 14b are connected to the multiplexer 21 by eight wirings 18a to 18h that are independent from each other.
- a configuration in which some of the plurality of first electrodes are connected to each other and the plurality of second electrodes respectively opposed to the plurality of first electrodes is also possible to be connected to each other is possible.
- the first electrodes arranged in the Y direction may be connected to each other
- the first electrodes arranged in the X direction may be connected to each other.
- FIG. 4 is a plan view showing an arrangement example of the first electrodes of the capacitive input device according to the modification, and the first electrodes 41 to 46 formed on the upper surface 151 of the first base material 15a. 61 to 66 and wirings connected to them.
- three rhombus-shaped first electrodes 41, 42, 43 arranged in the Y direction are sequentially connected by wirings 51, 52, and three rhombus-shaped first electrodes 44, 45, 46 are The wirings 53 and 54 are connected in order.
- three rhombus-shaped first electrodes 61, 62, 63 arranged in the X direction are sequentially connected by wirings 71, 72, and three rhombus-shaped first electrodes 64, 65, 66 are wired by wirings 73, 74. Connected in order.
- the wirings 51 and 52 and the wirings 71 and 73 are insulated and intersect with each other, and the wirings 53 and 54 and the wirings 72 and 74 are insulated and intersected with each other.
- the electrode groups connected to each other in this way are respectively connected to the arithmetic unit 20 as shown in FIG. 4, and are switched to the drive circuit 22 and the detection circuit 23 according to the detection state.
- a plurality of second electrodes are arranged on the second base material 15b so as to face the first electrodes.
- the second electrode includes a plurality of electrodes connected by wiring in the X direction and a plurality of electrodes connected by wiring in the Y direction. Again, the intersecting wires are insulated from each other.
- the first detection state all the first electrodes are connected to the drive circuit, and all the second electrodes are connected to the detection circuit.
- either one of the first electrode rows arranged in the Y direction or one of the first electrode rows arranged in the X direction is connected to the drive circuit, and the second electrode row facing the first electrode row is Connected to the detection circuit.
- the first electrodes 61, 62, 63 and the second electrode facing the first electrodes are simultaneously connected to the drive circuit, and then the first electrodes 64, 65, 66 and the second electrode facing the second electrode are connected. The electrodes are simultaneously connected to the drive circuit.
- the first electrodes 41, 42, 43 and the second electrode facing the first electrodes 41 are simultaneously connected to the detection circuit, and then the first electrodes 44, 45, 46 and the second electrode facing the first electrode are simultaneously connected to the detection circuit. Connected.
- the electrodes By connecting the electrodes in this way, even if the number of electrodes increases, the wiring is not complicated and the wiring area is not increased, and an increase in the processing load of driving and detection can be suppressed.
- positioning of 3 rows 3 columns was shown in FIG. 4, the number of arrangement
- the capacitance-type input device is useful in that it can achieve both detection of the position information of the operating body that is approaching or touching and detection of the pressing force applied to the front panel. It is.
Abstract
Description
これに対して、基材上においてX方向とY方向に沿って電極群をそれぞれ配列させた従来の静電容量式入力装置においては、表面パネルに加えられた力の大きさによって変化する、電極の接触面積の変化に基づいて静電容量の変化を推測し、これによって押圧力がかかったかどうかを検出する方法が考えられる。しかし、電極への接触面積は、操作体の姿勢の違い、例えば、指を立てている場合と寝かせている場合の違いによっても変化してしまうことから、検出の確実性や信頼性の観点からはこのような方法を用いることは好ましくない。
しかしながら、特許文献1の入力装置では、上下の導電膜の間隔が非常に薄くなっているため、電極部とグランドとの間の静電容量が大きくなる。そのため、操作体が表面パネルに接近又は接触しても、もとの静電容量に対する変化の割合が小さくなってしまうことから、操作体の位置検出、特に操作体が接触せずに接近したときの位置検出が難しくなるという問題があった。これに対して、上下の導電膜の間隔を大きくすると、導電膜の間隔が変化しても静電容量の変化が小さいことから、操作体の位置検出と区別して押圧力を検出することは困難であった。
このように、互いに対向する2つの電極で構成される対向電極対を複数設け、電極に押圧力がかかったかどうか、又は、押圧力の大きさを検出する第1の検出状態と、操作体の接近又は接触した位置を検出する第2の検出状態とを切り替えることにより、第1基材と第2基材の間隔を厚くすることなく、いずれの検出状態においても感度が高く、精度の高い検出を行うことができる静電容量式入力装置を提供することが可能となる。
これにより、第1の検出状態における検出精度と第2の検出状態における検出精度を両立させた静電容量式入力装置を提供することができる。
これにより、押圧力がかかったかどうか、又は、押圧力の大きさについて確実に検出することができる。
これにより、すべての対向電極対に同時に駆動電圧を印加する場合に比べて消費電力を抑えることが可能となる。
れることが好ましい。
電極対を単位として駆動部又は検出部に接続したため、より感度が高く、精度の高い検出を行うことができる。
これにより、第1及び第2基材上で電極を設けたすべての領域について検出を行うことが可能となる。
これにより、相互容量による検出のように、駆動部に接続された対向電極対とは異なる対向電極対で検出を行う必要がなく、また、対向電極対を順次切り替える必要がないため、簡便に検出を行うことができる。
これにより、電極に対応する領域全体で、操作体の接近、接触、及び押圧、並びに押圧の大きさを検出することができるため、迅速かつ確実に検出を行うことができる。
これにより、操作体による操作がないときの静電容量を一定にすることができ、安定した検出処理を行うことができる。
図1は本実施形態に係る静電容量式入力装置10の電極配置を示す図である。図2(A)は、静電容量式入力装置10のセンサー部10aの構成を示す断面図、図2(B)は変形例に係る静電容量式入力装置のセンサー部30aの構成を示す断面図である。図3は、静電容量式入力装置10の機能ブロック図である。ここで、図1においては、第1基材15a、光学接着部材16、及び、第2基材15bの図示を省略している。図2は、図1のA-A線において矢印方向から見た断面図である。各図においてはX-Y-Z座標が示されている。Z方向は上下方向であり、XY平面はZ方向に垂直な平面である。
以下の説明において、操作体とは、静電容量式入力装置10を操作する操作者の指や手又はスタイラス(stylus)である。
図1と図3に示すように、センサー部10aは4つの対向電極対11、12、13、14からなる。これらの対向電極対11、12、13、14は、上下方向(Z方向)において互いに対向する第1電極と第2電極でそれぞれ構成されている。具体的には、対向電極対11は上側の第1電極11aと下側の第2電極11bで構成され、対向電極対12は上側の第1電極12aと下側の第2電極12bで構成され、対向電極対13は上側の第1電極13aと下側の第2電極13bで構成され、対向電極対14は上側の第1電極14aと下側の第2電極14bで構成されている。
なお、本実施形態では、対向電極対の数を4つとしたが、静電容量式入力装置の大きさ、検出精度等に応じて異なる数に設定することができる。
なお、第1電極11a、12a、13a、14aと第2電極11b、12b、13b、14bは、不透明な導電性材料、例えば金属層、銀ペースト、導電性ナノワイヤで構成してもよい。
さらに、対向電極対となる第1電極と第2電極は、第1基材15a及び第2基材15bの平面方向、すなわちXY平面を含む方向において、第1電極の平面形状の中心を含む範囲で対向していることが好ましい。
者の指や手が触れただけでは変形しないが、指や手で押すことによって撓む程度の弾性を有し、プラスチック等で構成される。第2基材15bは、硬性を有する材料、例えばプラスチックやガラスで構成され、静電容量式入力装置10が適用されるデバイス、例えば液晶パネルに固定される。
第1基材15a上のいずれかの第1電極に対して、下向き、すなわち第2基材15b側への押圧力を加えると、第1基材15aが撓むとともに光学接着部材16が圧縮され、これによって第1基材15aは第2基材15bに接近する。これに対して、第1基材15aに加えていた押圧力を解除すると第1基材15aと光学接着部材16はもとの状態に回復して、第1基材15aと第2基材15bの間隔は押す前の大きさにもどる。
これに対して、それぞれの検出状態において、操作者によって、あらかじめ定めた所定操作が行われるまではその状態を維持し、その所定操作が行われたところで検出状態を切り替えるようにしてもよい。したがって、前記所定操作が行われない限り、現在の検出状態を維持し続けてもよい。これにより効率的な検出処理が可能となる。
また、一方の検出状態については、所定の操作が行われるまでその状態を維持し、他方の検出状態については、操作にかかわらずに所定時間が経過したところで切り替えを行うようにしてもよい。
ここで、第2の検出状態において、駆動電圧が印加される対向電極対を、所定時間ごとに切り替えると、第1電極11a、12a、13a、14aを配置したすべての領域について、操作体が接近又は接触した座標を検出することができる。
(1)互いに対向する、第1電極と第2電極で構成される4つの対向電極対11、12、13、14を設け、第1電極に押圧力がかかったかどうか、又は押圧力の大きさを検出する第1の検出状態と、操作体の接近又は接触した位置を検出する第2の検出状態とを切り替えることにより、第1基材15aと第2基材15bの間隔を厚くすることなく、いずれの検出状態においても感度が高く、精度の高い検出を行うことができる。
(A)上記実施形態では、第1基材15aと第2基材15bの間に光学接着部材16を配置させていたが、第1基材15aと第2基材15bに挟まれる、非導電性の弾性部材はこれに限られず、例えば、常温でゴム弾性を示す高分子物質(エラストマー)を、第1基材15a及び第2基材15bと同一の平面積を有する板状として第1基材15aと第2基材15bの間に配置してもよい。
さらに、図2(B)に示す変形例1に係る静電容量式入力装置のセンサー部30aのように、同一の高さを有し、同一の材料からなる半球状の複数の弾性部36を、第1基材15aと第2基材15bの間に一定間隔で配置してもよい。この構成においては、複数の弾性部36の間に空間37が形成され、弾性部36の弾性によって、第1基材15aと第2基材15bが上下方向に接近自在となるとともに、空間37があることによって、弾性部36の変形量を十分に確保でき、かつ、変形した弾性部36が第1基材15aと第2基材15bで挟まれた領域から突出することがない。
1電極64、65、66が配線73、74によって順に接続されている。配線51、52と配線71、73は互いに絶縁されて交差しており、配線53、54と配線72、74は互い絶縁されて交差している。このように互いに接続された電極群は、図4に示すように演算部20にそれぞれ接続されており、検出状態に応じて駆動回路22と検出回路23にそれぞれ切り替えられる。
ここで、図4には図示しないが、それぞれの第1電極に対向するように、第2基材15b上に複数の第2電極が配置されている。第2電極も第1電極と同様に、X方向に並んで配線で接続された複数の電極とY方向に並んで配線で接続された複数の電極とを有している。ここでも交差する配線は互いに絶縁されている。
第1の検出状態では、全ての第1電極が駆動回路に接続され、全ての第2電極が検出回路に接続される。あるいは、Y方向に並ぶ第1電極の列のいずれか、またはX方向に並ぶ第1電極の列のいずれかが駆動回路に接続され、前記第1電極の列に対向する第2電極の列が検出回路に接続される。
第2の検出状態では、例えば第1電極61、62、63とこれに対向する第2電極が同時に駆動回路に接続され、次に、第1電極64、65、66とこれに対向する第2電極が同時に駆動回路に接続される。そして、第1電極41、42、43とこれに対向する第2電極が同時に検出回路に接続され、次に、第1電極44、45、46とこれに対向する第2電極が同時に検出回路に接続される。
このように電極を接続することにより、電極数が増えても、配線を複雑化させて配線面積を増やすことがなく、また、駆動と検出の処理負担の増大を抑えることができる。なお、図4では、3行3列の配置例を示したが配置数はこれに限定されない。
本発明について上記実施形態を参照しつつ説明したが、本発明は上記実施形態に限定されるものではなく、改良の目的又は本発明の思想の範囲内において改良又は変更が可能である。
10a センサー部
11、12、13、14 対向電極対
11a、12a、13a、14a 第1電極
11b、12b、13b、14b 第2電極
15a 第1基材(表面パネル)
15b 第2基材
16 光学接着部材(弾性部材)
18a、18b、18c、18d、18e、18f、18g、18h 配線
20 演算部
21 マルチプレクサ(切り替え部)
22 駆動回路(駆動部)
23 検出回路(検出部)
24 制御部(切り替え部)
30a センサー部
36 弾性部
37 空間
41、42、43、44、45、46 第1電極
51、52、53、54 配線
61、62、63、64、65、66 第1電極
71、72、73、74 配線
151 上面
152 下面
Claims (9)
- 第1基材と第2基材が接近自在に対向して設けられており、
前記第1基材に形成された複数の第1電極と、
前記第2基材に形成され、前記複数の第1電極に対してそれぞれ対向する複数の第2電極とを有し、
互いに対向する、前記第1電極と前記第2電極とで対向電極対が構成されており、
それぞれの第1電極とそれぞれの第2電極を駆動部と検出部とに切り替える切り替え部が設けられ、
前記切り替え部によって、互いに対向する前記第1電極と前記第2電極との距離の変化を検出する第1の検出状態と、前記対向電極対からの検出出力により操作体が接近又は接触した座標を検出する第2の検出状態とが切り替えられることを特徴とする静電容量式入力装置。 - 前記第1の検出状態では、前記複数の第1電極と前記複数の第2電極の一方が前記駆動部に切り替えられ、他方が前記検出部に切り替えられ、
前記第2の検出状態では、前記対向電極対を構成する前記第1電極と前記第2電極が、駆動部又は検出部に切り替えられることを特徴とする請求項1に記載の静電容量式入力装置。 - 前記第1の検出状態では、すべての前記対向電極対において同時に、前記第1電極と前記第2電極の一方が前記駆動部に切り替えられ、他方が前記検出部に切り替えられることを特徴とする請求項2に記載の静電容量式入力装置。
- 前記第1の検出状態では、前記対向電極対ごとに、前記第1電極と前記第2電極の一方が前記駆動部に切り替えられ、他方が検出部に切り替えられることを特徴とする請求項2に記載の静電容量式入力装置。
- 前記第2の検出状態では、いずれかの前記対向電極対の前記第1電極と前記第2電極が共に前記駆動部に切り替えられ、これ以外の前記対向電極対の前記第1電極と前記第2電極が共に前記検出部に切り替えられて、前記駆動部に切り替えられた、前記第1電極及び前記第2電極と、前記検出部に切り替えられた、前記第1電極及び前記第2電極との間の相互容量の変化で座標が検出されることを特徴とする請求項1から請求項4のいずれか1項に記載の静電容量式入力装置。
- 前記第2の検出状態では、前記第1電極と前記第2電極が共に前記駆動部に切り替えられる前記対向電極対が順次切り替えられることを特徴とする請求項5に記載の静電容量式入力装置。
- 前記第2の検出状態では、いずれかの前記対向電極対において、前記第1電極と前記第2電極が共に駆動部と検出部に切り替えられて、前記検出部で検出された自己容量の変化で座標が検出されることを特徴とする請求項1から請求項4のいずれか1項に記載の静電容量式入力装置。
- 前記対向電極対を形成する前記第1電極と前記第2電極は、それぞれの対向面が互いに同一の平面形状を有することを特徴とする請求項1から請求項7のいずれか1項に記載の静電容量式入力装置。
- 前記第1基材と前記第2基材は、弾性部材を介して対向していることを特徴とする請求項1から請求項8のいずれか1項に記載の静電容量式入力装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680037516.0A CN107735757B (zh) | 2015-08-18 | 2016-06-06 | 静电电容式输入装置 |
JP2017535267A JP6431610B2 (ja) | 2015-08-18 | 2016-06-06 | 静電容量式入力装置 |
DE112016003753.8T DE112016003753T5 (de) | 2015-08-18 | 2016-06-06 | Kapazitive Eingabevorrichtung |
KR1020187000178A KR102139424B1 (ko) | 2015-08-18 | 2016-06-06 | 정전 용량식 입력 장치 |
US15/821,471 US10649594B2 (en) | 2015-08-18 | 2017-11-22 | Capacitive input device having two detection modes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015161162 | 2015-08-18 | ||
JP2015-161162 | 2015-08-18 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/821,471 Continuation US10649594B2 (en) | 2015-08-18 | 2017-11-22 | Capacitive input device having two detection modes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017029860A1 true WO2017029860A1 (ja) | 2017-02-23 |
Family
ID=58050780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/066728 WO2017029860A1 (ja) | 2015-08-18 | 2016-06-06 | 静電容量式入力装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10649594B2 (ja) |
JP (1) | JP6431610B2 (ja) |
KR (1) | KR102139424B1 (ja) |
CN (1) | CN107735757B (ja) |
DE (1) | DE112016003753T5 (ja) |
WO (1) | WO2017029860A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019114208A (ja) * | 2017-12-26 | 2019-07-11 | 信越ポリマー株式会社 | 感圧タッチセンサ |
JP2021511589A (ja) * | 2018-01-19 | 2021-05-06 | タクチュアル ラブズ シーオー. | 受信分離を伴うマトリックスセンサ |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3771972B1 (en) * | 2018-03-26 | 2023-02-08 | Alps Alpine Co., Ltd. | Detection device and control device |
JP7426562B2 (ja) * | 2019-07-17 | 2024-02-02 | パナソニックIpマネジメント株式会社 | 入力装置及び入力システム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035966A1 (ja) * | 2004-09-27 | 2006-04-06 | Kabushiki Kaisha Yokohama Shisutemu Kenkyuusho | 静電誘導方式タッチ入力装置用気体セル |
JP2015109086A (ja) * | 2013-12-04 | 2015-06-11 | 株式会社 ハイヂィープ | タッチに基づいた対象動作制御システム及びその方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3805907A1 (en) * | 2006-06-09 | 2021-04-14 | Apple Inc. | Touch screen liquid crystal display |
JP4332174B2 (ja) | 2006-12-01 | 2009-09-16 | アルプス電気株式会社 | 入力装置及びその製造方法 |
JP5429814B2 (ja) * | 2010-03-29 | 2014-02-26 | 株式会社ワコム | 指示体検出装置および検出センサ |
JP5748274B2 (ja) * | 2011-07-08 | 2015-07-15 | 株式会社ワコム | 位置検出センサ、位置検出装置および位置検出方法 |
US10007380B2 (en) * | 2013-07-29 | 2018-06-26 | Hideep Inc. | Touch input device with edge support member |
CN104423741A (zh) * | 2013-08-30 | 2015-03-18 | 天津富纳源创科技有限公司 | 触摸点及触摸压力的检测方法 |
CN104423737A (zh) * | 2013-08-30 | 2015-03-18 | 天津富纳源创科技有限公司 | 电容式触控装置及控制方法 |
US10042489B2 (en) * | 2013-09-30 | 2018-08-07 | Synaptics Incorporated | Matrix sensor for image touch sensing |
KR101712346B1 (ko) | 2014-09-19 | 2017-03-22 | 주식회사 하이딥 | 터치 입력 장치 |
TWI590139B (zh) * | 2015-08-24 | 2017-07-01 | 群創光電股份有限公司 | 顯示觸控裝置 |
KR102564349B1 (ko) * | 2016-09-30 | 2023-08-04 | 엘지디스플레이 주식회사 | 유기 발광 표시 장치 |
-
2016
- 2016-06-06 CN CN201680037516.0A patent/CN107735757B/zh active Active
- 2016-06-06 KR KR1020187000178A patent/KR102139424B1/ko active IP Right Grant
- 2016-06-06 JP JP2017535267A patent/JP6431610B2/ja active Active
- 2016-06-06 DE DE112016003753.8T patent/DE112016003753T5/de active Pending
- 2016-06-06 WO PCT/JP2016/066728 patent/WO2017029860A1/ja active Application Filing
-
2017
- 2017-11-22 US US15/821,471 patent/US10649594B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006035966A1 (ja) * | 2004-09-27 | 2006-04-06 | Kabushiki Kaisha Yokohama Shisutemu Kenkyuusho | 静電誘導方式タッチ入力装置用気体セル |
JP2015109086A (ja) * | 2013-12-04 | 2015-06-11 | 株式会社 ハイヂィープ | タッチに基づいた対象動作制御システム及びその方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019114208A (ja) * | 2017-12-26 | 2019-07-11 | 信越ポリマー株式会社 | 感圧タッチセンサ |
JP2021511589A (ja) * | 2018-01-19 | 2021-05-06 | タクチュアル ラブズ シーオー. | 受信分離を伴うマトリックスセンサ |
JP7369457B2 (ja) | 2018-01-19 | 2023-10-26 | タクチュアル ラブズ シーオー. | 受信分離を伴うマトリックスセンサ |
Also Published As
Publication number | Publication date |
---|---|
DE112016003753T5 (de) | 2018-05-03 |
JPWO2017029860A1 (ja) | 2018-03-08 |
US10649594B2 (en) | 2020-05-12 |
CN107735757B (zh) | 2020-07-28 |
KR20180015235A (ko) | 2018-02-12 |
KR102139424B1 (ko) | 2020-07-29 |
CN107735757A (zh) | 2018-02-23 |
US20180095562A1 (en) | 2018-04-05 |
JP6431610B2 (ja) | 2018-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101598412B1 (ko) | 전극 시트 및 터치 입력 장치 | |
US10331267B2 (en) | Touch detection method and touch detector performing the same | |
US9658726B2 (en) | Single layer sensor pattern | |
KR102093445B1 (ko) | 용량 방식의 접촉 감지 장치 | |
US20140035864A1 (en) | Capacitive touch-control panel and apparatus thereof | |
KR101742052B1 (ko) | 터치 입력 장치 | |
TW200915161A (en) | Two-dimensional position sensor | |
JP6148934B2 (ja) | タッチパネル | |
JP2010055612A (ja) | 多点タッチセンサーシステム | |
KR20160048424A (ko) | 터치 입력 장치 | |
KR20210068626A (ko) | 터치 입력 자극을 결정하기 위한 정전용량 센서 및 방법 | |
CN103713742A (zh) | 电容式触控键盘 | |
US10289210B1 (en) | Enabling touch on a tactile keyboard | |
JP6431610B2 (ja) | 静電容量式入力装置 | |
JP5487240B2 (ja) | 静電容量式タッチパネルの導電模様構造、およびその構成方法 | |
JP2014157611A (ja) | 静電容量式タッチパネルの導電模様構造 | |
CN111811547A (zh) | 互电容触摸传感器和用于操作互电容触摸传感器的方法 | |
JP2014170334A (ja) | 静電容量式タッチパネルおよびそれを用いた手持ち式電子機器 | |
KR101969831B1 (ko) | 터치 센서 패널 | |
JP6199541B2 (ja) | タッチ入力装置 | |
KR20190037099A (ko) | 터치 입력 장치 | |
KR101191145B1 (ko) | 정전용량식 터치스크린용 터치 필름, 이를 적용한 터치스크린 및 휴대 단말기 | |
JP2013156949A (ja) | タッチパネル | |
KR20160098988A (ko) | 터치 입력 장치 | |
CN106557211B (zh) | 一种三维触控总成 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16836852 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017535267 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20187000178 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112016003753 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16836852 Country of ref document: EP Kind code of ref document: A1 |