【発明の詳細な説明】 産業上の利用分野 本発明は、各種機器に用いられる静電容量方式を用いた
機器の入力装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device for a device using a capacitance method used for various devices.
従来の技術 従来、タッチスイッチとして、静電容量方式を用いた入
力装置は、入力部に強化ガラス等の誘電体を使用するた
めに、塵埃や水滴の侵入等を防ぐ構造を容易に実現する
ことが可能であり、信頼性の向上を図るためにより利用
されるようになってきている。2. Description of the Related Art Conventionally, since an input device using a capacitance method as a touch switch uses a dielectric material such as tempered glass for an input portion, it is possible to easily realize a structure that prevents intrusion of dust or water droplets. Is possible and is being used more for improving reliability.
以下、図面を参照しながら、従来の静電容量方式を用い
た入力装置について説明を行う。Hereinafter, an input device using a conventional capacitance method will be described with reference to the drawings.
第４図において、１は強化ガラス等の誘電体からなる平
板状パネル、２は駆動電極、21は駆動電極２に接続され
た駆動信号線、３は検知電極、31は検知電極３に接続さ
れた検知信号線であり、４はフレキシブルプリント基板
である。駆動電極２と検知電極３は互いに略平行しまた
駆動電極2,駆動信号線21,検知電極3,検知信号線31はフ
レキシブルプリント基板４上に複数対構成しており、か
つ、フレキシブルプリント基板４は、平板状パネル１の
裏面に設けてある。５は、交流またはパルス状電圧等を
発生する電源であり、駆動信号線21を介して駆動電極２
に接続されている。６はそれぞれの検知信号線31を介し
た信号レベルと基準電位ＶREFを比較し、その結果を出
力するコンパレータ等で構成された検知部である。７
は、検知部６の出力信号により、スイッチのオンオフ等
の所定の制御を行なううマイクロコンピュータ等を含ん
だ制御部である。８は、駆動電極２と検知電極３の対向
面の平板状パネル表面に酸化スズなどの導電体を蒸着等
の方法で構成されたタッチ電極で、このタッチ電極８に
使用者が指で触れることになる。In FIG. 4, 1 is a flat panel made of a dielectric material such as tempered glass, 2 is a drive electrode, 21 is a drive signal line connected to the drive electrode 2, 3 is a detection electrode, 31 is connected to the detection electrode 3. 4 is a flexible printed circuit board. The drive electrodes 2 and the detection electrodes 3 are substantially parallel to each other, and a plurality of pairs of the drive electrodes 2, the drive signal lines 21, the detection electrodes 3, and the detection signal lines 31 are formed on the flexible printed circuit board 4, and the flexible printed circuit board 4 is provided. Is provided on the back surface of the flat panel 1. Reference numeral 5 denotes a power supply that generates an alternating current or a pulsed voltage, etc.
It is connected to the. Reference numeral 6 denotes a detection unit composed of a comparator or the like that compares the signal level via each detection signal line 31 with the reference potential VREF and outputs the result. 7
Is a control unit including a microcomputer or the like for performing predetermined control such as on / off of a switch according to the output signal of the detection unit 6. Reference numeral 8 denotes a touch electrode formed by a method such as vapor deposition of a conductor such as tin oxide on the flat panel surface of the facing surface of the drive electrode 2 and the detection electrode 3, and the user touches the touch electrode 8 with a finger. become.
第５図は、従来例の一対の駆動電極２と検知電極３の断
面図である。ここでC0は人体の静電容量、C1は駆動電極
２とタッチ電極８間の静電容量、C2は検知電極３とタッ
チ電極８間の静電容量、C3は平板状パネル１を介した駆
動電極２と検知電極３間の静電容量、C4はフレキシブル
プリント基板４のベース材（たとえばポリエステル樹脂
等）を介した駆動電極２と検知電極３間の静電容量であ
る。FIG. 5 is a cross-sectional view of a pair of drive electrode 2 and detection electrode 3 in the conventional example. Here, C0 is the capacitance of the human body, C1 is the capacitance between the drive electrode 2 and the touch electrode 8, C2 is the capacitance between the detection electrode 3 and the touch electrode 8, and C3 is the flat panel 1. Capacitance between the drive electrode 2 and the detection electrode 3 via C, and C4 is the capacitance between the drive electrode 2 and the detection electrode 3 via the base material (for example, polyester resin) of the flexible printed circuit board 4.
以上のように構成された入力装置の動作について説明す
る。まず使用者がタッチ電極８に触れない場合を考える
と、この時流れる電流は、タッチ電極８を介して直列接
続となるC1,C2に流れる電流と、C3に流れる電流とC4に
流れる電流の和となり、これにより決定される電位V
1が、検知信号線31を介て検知部６に入力される。一方
使用者がタッチ電極８に触れると、人体の大地に対する
静電容量C0を介して大地に電流が流れ、これにより決定
される電位V2が検知信号線31を介して検知部に入力され
ることになり、検知部６に入力される基準電位ＶREFをV
1とV2の間に設定しておけばタッチ電極８を介した使用
者の設定を検知することが可能になり検知部６から使用
者の設定に応じた信号を制御部７に入力することにより
所定の制御を行なうものである。The operation of the input device configured as above will be described. First, considering the case where the user does not touch the touch electrode 8, the currents flowing at this time are the currents flowing in C1 and C2 which are connected in series via the touch electrode 8 and the current flowing in C3 and C4 . It is the sum of the currents that flow, and the potential V is determined by this
1 is input to the detection unit 6 via the detection signal line 31. On the other hand, when the user touches the touch electrode 8, a current flows to the ground through the capacitance C0 with respect to the ground of the human body, and the potential V2 determined by this is input to the detection unit via the detection signal line 31. Therefore, the reference potential VREF input to the detection unit 6 is set to V
If it is set between1 and V2 , it becomes possible to detect the user's setting via the touch electrode 8, and the detection unit 6 inputs a signal according to the user's setting to the control unit 7. The predetermined control is performed by.
発明が解決しようとする問題点 上記したように、使用者のタッチ電極８へのタッチの有
無を検知するためには、検知部６における基準電位Ｖ
REFを使用者がタッチ電極８に触れる前の電位V1と、触
れた時の電位V2の間に設定するのであるが、通常、この
種の入力装置はオン・オフなどの少なくとも２ケ以上の
複数のタッチ電極が必要となる。しかし、複数対の駆動
電極２と検知電極３、及びそれらに接続される駆動信号
線21と検知信号線31をフレキシブルプリント基板４に設
けると、駆動電極と検知電極を一対とした時の各電極対
間または各信号線間の浮遊容量等の影響により、使用者
がタッチ電極８に触れる前の電位V1と触れた時の電位V2
が各電極対によって異なってくる。そこで、各電極対毎
に基準電位ＶREFを設定すれば、解決するが、回路構成
が複雑になる恐れがある。したがって従来例のように駆
動電極２及び検知電極３の面積を変えたり間隙を調整す
ることにより、各タッチ電極に対応する駆動電極２と検
知電極３の静電容量を変化させ、タッチ電極８に触れな
い時の電位V1,及びタッチ電極８に触れた時の電位V2を
シフトさせ、共通部分の電位V1と電位V2の間に基準電位
ＶREFを設定している。この方法では、駆動電極２及び
検知電極３の面積を変えたり、その間隙を調整して静電
容量を変化させることになるが、入力パネルの面積に限
りがあり、複数の入力キーを平板状パネル１に設ける場
合には、駆動電極2,及び検知電極３の面積の大きさが限
定され駆動信号線21及び検知信号線31の配線（パター
ン）の引き回わしのスペースもなくなる恐れがある。ま
た、静電容量を変化させたことにより、隣接する電極
（駆動電極及び検知電極）への浮遊容量が増減し、設計
パターンが複雑になりまた各入力キーに対する共通の基
準電位ＶREFを設定しにくくなる恐れがあった。Problems to be Solved by the Invention As described above, in order to detect the presence or absence of a touch on the touch electrode 8 by the user, the reference potential V in the detection unit 6 is detected.
The REF is set between the potential V1 before the user touches the touch electrode 8 and the potential V2 when the touch electrode 8 is touched. Normally, this type of input device has at least two or more such as on / off. Multiple touch electrodes are required. However, when a plurality of pairs of drive electrodes 2 and detection electrodes 3 and drive signal lines 21 and detection signal lines 31 connected to them are provided on the flexible printed circuit board 4, each electrode when the drive electrodes and the detection electrodes are paired is formed. the influence of the stray capacitance between pairs or the signal lines, the potential V2 when the user touches the potential V1 of the before touching the touch electrode 8
Is different for each electrode pair. Therefore, setting the reference potential VREF for each electrode pair solves the problem, but the circuit configuration may be complicated. Therefore, by changing the area of the drive electrode 2 and the detection electrode 3 or adjusting the gap as in the conventional example, the electrostatic capacitance of the drive electrode 2 and the detection electrode 3 corresponding to each touch electrode is changed, and the touch electrode 8 is changed. The potential V1 when not touching and the potential V2 when touching the touch electrode 8 are shifted, and the reference potential VREF is set between the potential V1 and the potential V2 of the common portion. In this method, the area of the drive electrode 2 and the detection electrode 3 is changed, and the gap is adjusted to change the electrostatic capacity, but the area of the input panel is limited, and a plurality of input keys are formed in a flat plate shape. When it is provided on the panel 1, the size of the area of the drive electrode 2 and the detection electrode 3 is limited, and there is a possibility that the wiring (pattern) of the drive signal line 21 and the detection signal line 31 will also have no space for routing. Moreover, by changing the electrostatic capacitance, the stray capacitance to the adjacent electrodes (driving electrode and detection electrode) increases or decreases, the design pattern becomes complicated, and the common reference potential VREF for each input key is set. There was a fear that it would be difficult.
本発明はこのような従来の問題点を解消し、使用性と信
頼性を高めた機器の入力装置を提供するものである。The present invention solves the conventional problems described above and provides an input device for a device with improved usability and reliability.
問題点を解決するための手段 上記問題点を解決するために、本発明は、駆動電極及び
それに接続された駆動信号線からなる駆動電極部と検知
電極及びそれに接続された検知信号線からなる検知電極
部をフレキシブルプリント基板上に複数対構成し、駆動
電極部と検知電極部間のフレキシブルプリント基板に切
り欠き部を設けかつフレキシブルプリント基板を誘電体
からなる平板状パネル裏面に設け、この構成により、機
器の入力装置を構成する。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a detection including a drive electrode portion including a drive electrode and a drive signal line connected thereto, a detection electrode and a detection signal line connected thereto. A plurality of pairs of electrodes are formed on the flexible printed circuit board, a cutout is provided in the flexible printed circuit board between the drive electrode section and the detection electrode section, and the flexible printed circuit board is provided on the back surface of the flat plate panel made of a dielectric material. , Configure the input device of the device.
作用 上記した構成とすることにより、所定の駆動電極部と検
知電極部間の浮遊容量を調節することができ、隣接する
電極部（駆動電極部または検知電極部）にほとんど影響
を与えず、所定の駆動電極部と検知電極部の一対に対応
するタッチ電極に、使用者が触れない（ノータッチ）時
の検知部への入力電位V1と使用者が触れた（タッチし
た）時の検知部への入力電位V2を全体にシフトさせるこ
とが可能となる。結果として、駆動電極部及び検知電極
部の面積等を同じ形状にできるため各電極部の入力電位
差（V1−V2）はほぼ同じとなる。Operation With the above configuration, the stray capacitance between the predetermined drive electrode section and the detection electrode section can be adjusted, and the adjacent electrode section (drive electrode section or detection electrode section) is hardly affected, Input voltage V1 to the detection part when the user does not touch (no touch) the touch electrodes corresponding to the pair of the drive electrode part and the detection electrode part and to the detection part when the user touches (touches) It becomes possible to shift the input potential V2 of the whole. As a result, the driving electrode portion and the detection electrode portion can have the same area and the like, so that the input potential difference (V1 −V2 ) of each electrode portion becomes substantially the same.
また、隣接電極部にほとんど影響を与えずに入力電位V1
及びV2をシフトさせることが可能であるために、複数個
の入力に対しても、ほぼ共通のV1とV2の設定が可能とな
る。In addition, the input potential V1
Since V and V2 can be shifted, almost common V1 and V2 can be set for a plurality of inputs.
従って、複数個の入力キーを有する入力装置において
も、設計が容易となり、かつ使用者の設定を確実に設定
することができ使用性と信頼性が可能となる。Therefore, even in the case of an input device having a plurality of input keys, the design can be facilitated, and the user's setting can be surely set, which enables usability and reliability.
実施例 以下本発明の一実施例において図面を参照しながら説明
する。第１図は本発明の一実施例における入力装置の平
板状パネルを裏面からみた平面図である。第１図におい
て１は強化ガラス等の誘電体からなる平板状パネル、2b
は複数個の駆動電極、21は駆動電極2bに接続された駆動
信号線、3bは駆動電極2bからの出力を検出する複数個の
検知電極である。31は各検知電極に接続された検知電極
線である。4bは、フレキシブルプリント基板であり、駆
動電極2b,検知電極3b,駆動信号線21,検知信号線31はフ
レキシブルプリント基板4b上に構成され、フレキシブル
プリント基板4bは平板状パネル１の裏面に密着するよう
に固着されている。Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a flat panel of an input device according to an embodiment of the present invention as viewed from the back side. In FIG. 1, 1 is a flat panel made of a dielectric material such as tempered glass, 2b
Is a plurality of drive electrodes, 21 is a drive signal line connected to the drive electrode 2b, and 3b is a plurality of detection electrodes for detecting the output from the drive electrode 2b. Reference numeral 31 is a detection electrode wire connected to each detection electrode. 4b is a flexible printed circuit board, and the drive electrode 2b, the detection electrode 3b, the drive signal line 21, and the detection signal line 31 are formed on the flexible printed circuit board 4b, and the flexible printed circuit board 4b is in close contact with the back surface of the flat panel 1. It is fixed so that
９は駆動電極2bと検知電極3b間の所定部分に設けた切り
欠き部であり、切り欠き部９は、駆動電極2bと検知電極
3bの間にあるフレキシブルプリント基板4bのポリエステ
ル等の樹脂の基材部分の一部または全部を切り取って形
成している。すなわち、切り欠き部９は、フレキシブル
基板4bに凹部を形成しているか貫通孔を形成しているか
である。５は電源、６は検知部、７は制御部、８はタッ
チ電極で、以上は第４図の構成と主要部を除き同じもの
である。Reference numeral 9 denotes a cutout portion provided in a predetermined portion between the drive electrode 2b and the detection electrode 3b. The cutout portion 9 is a drive electrode 2b and the detection electrode.
The flexible printed circuit board 4b between the portions 3b is formed by cutting off a part or all of the base material portion of the resin such as polyester. That is, the cutout portion 9 is whether the recessed portion or the through hole is formed in the flexible substrate 4b. Reference numeral 5 is a power source, 6 is a detection unit, 7 is a control unit, and 8 is a touch electrode. The above is the same as the configuration of FIG.
第２図は、同実施例における切り欠き部９を有する電極
の断面図である。C0は人体の静電容量、C1は駆動電極2b
とタッチ電極８間の静電容量、C2は検知電極3bとタッチ
電極６間の静電容量、C3は平板状パネル１を介した駆動
電極2bと検知電極3b間の静電容量、Ｃ′４は切り欠き部
９またはフレキシブルプリント基板4bの基材部分を介し
た駆動電極2bと検知電極3b間の静電容量である。FIG. 2 is a sectional view of an electrode having a cutout portion 9 in the same embodiment. C0 is the capacitance of the human body, C1 is the drive electrode 2b
Between the touch electrode 8 and the touch electrode 8, C2 is the capacitance between the detection electrode 3b and the touch electrode 6, C3 is the capacitance between the drive electrode 2b and the detection electrode 3b through the flat panel 1, and C ′4 is the capacitance between the drive electrode 2b and the detection electrode 3b via the cutout portion 9 or the base material portion of the flexible printed board 4b.
第３図は、第１図，第２図における検知部６の調整後の
入力電位を示したもので、横軸上のＡ〜Ｄは第１図にお
ける駆動電極2bと検知電極3bの一対からなる入力キーに
対応している。ここでＶ′１は使用者が触れない時の検
知部６に対する入力電位、Ｖ′２は使用者が触れた時の
検知部６に対する入力電位、ＶREFは、各入力電位に対
する共通の基準電位である。また〇印，×印は切り欠き
部９のない場合のＶ′1,V′2,●印，▲印は切り欠き部
９を設けた時のＶ′1,V′２を示している。FIG. 3 shows the input potential after the adjustment of the detection unit 6 in FIGS. 1 and 2, and A to D on the horizontal axis represent the pair of the drive electrode 2b and the detection electrode 3b in FIG. It corresponds to the input key. Here, V ′1 is an input potential to the detection unit 6 when the user does not touch it, V ′2 is an input potential to the detection unit 6 when the user touches it, and VREF is a common reference potential for each input potential. Is. The ◯ mark and the X mark show V ′1 and V ′2 without the cutout portion 9, the ● mark, and the ▲ mark show V ′1 and V ′2 when the cutout portion 9 is provided.
以上のように構成された入力装置の動作について説明す
る。まず使用者がタッチ電極８に触れない場合を考える
と、この時流れる電流は、タッチ電極８を介して直列接
続となるC1,C2に流れる電流と、C3に流れる電流とＣ′
４に流れる電流の和となる。つまり、検知部６の入力部
から見た合成容量Ｃは、となり、これによって決まる電流が、検知信号線31を介
し、検知部６に流れ込み、検知部６の内部インピーダン
スにより、検知部６の入力に電位Ｖ′１が生じる。The operation of the input device configured as above will be described. First, considering the case where the user does not touch the touch electrode 8, the currents flowing at this time are the current flowing through C1 and C2 which are connected in series via the touch electrode 8 and the current flowing through C3 and C ′.
It becomes the sum of the electric currents flowing in4 . That is, the combined capacitance C seen from the input unit of the detection unit 6 is Then, the current determined by this flows into the detection unit 6 through the detection signal line 31, and the potential V ′1 is generated at the input of the detection unit 6 due to the internal impedance of the detection unit 6.
一方、使用者がタッチ電極８を触れた場合を考えると、
この時検知電極3bに流れ込む電流は、C1に流れる電流の
大部分が人体の大地に対する静電容量C0を介して大地に
電流が流れ込むためC2を介してC1に流れる電流の一部と
C3を介して流れる電流とＣ′４を介して流れる電流の総
和となる。つまり、検知部６の入力部から見た合成容量
Ｃ′はとなり、これによって決まる電流が検知信号線を介し
し、検知部６に流れ込み、検知部６の内部インピーダン
スにより検知部６の入力に電位Ｖ′２が生じる。On the other hand, considering the case where the user touches the touch electrode 8,
Current flowing at this time the detection electrode 3b, a portion of the current flowing in the C1 through C2 for most of the current flowing to the C1 current flows to ground through the capacitance C0 on the human body of the earth When
It is the sum of the current flowing through C3 and the current flowing through C ′4 . That is, the combined capacitance C ′ seen from the input section of the detection section 6 is Then, the current determined by this flows into the detection unit 6 through the detection signal line, and the internal impedance of the detection unit 6 causes the potential V ′2 at the input of the detection unit 6.
合成容量C,C′を比べると、タッチ電極８に触れない時
と触れた時の容量が変化するのは、第３項のみであり、第１項目C3,第２項目Ｃ′４は変化しな
い。つまり、タッチ電極８を触れない時と触れた時の検
知部６の入力における電位の差は、検知部６の内部イン
ピーダンスは変化しないので、合成容量C,C′の第３項
目の変化によるものであるといえる。ここで、複数個の
駆動電極2bの各面積を等しくし、複数個の検知電極3bの
各面積も等しくし同一の使用者がタッチ電極８に触れる
とすると、合成容量C,C′のC0,C1,C2の容量は変らない
ので、結局、タッチ電極８に触れない時と触れた時の電
位差はほぼ一定（Ｖ′１−Ｖ′２）となる。Comparing the composite capacitances C and C ′, the capacitance changes when the touch electrode 8 is not touched and when it is touched. Only the first item C3 and the second item C ′4 do not change. That is, the difference between the potentials at the input of the detection unit 6 when the touch electrode 8 is not touched and when the touch electrode 8 is touched is because the internal impedance of the detection unit 6 does not change, and is due to the change in the third item of the combined capacitance C, C ′. You can say that. Here, assuming that the areas of the plurality of drive electrodes 2b are the same, the areas of the plurality of detection electrodes 3b are also the same, and the same user touches the touch electrode 8, C0 of the combined capacitances C and C ′ is obtained. Since the capacitances of C1 , C2 and C2 do not change, the potential difference between when the touch electrode 8 is not touched and when it is touched is substantially constant (V ′1 −V ′2 ).
一方、合成容量C,C′内の第１項目C3と第２項目Ｃ′４
は、タッチ電極８へのタッチに無関係に存在する容量で
あり、常にC3とＣ′４を介して駆動電極2bから検知電極
3bにリーク電流が流れる。従って、検知部６の入力電位
は、合成容量C,C′のC3＋Ｃ′４で決定される電位によ
ってシフトすることになり、使用者のタッチ，ノータッ
チ時の検知部６の入力電位が決まる。On the other hand, the first item C3 and the second item C ′4 in the combined capacity C, C ′4
Is a capacitance which exists independently of the touch on the touch electrode 8 always detected from the drive electrode 2b through the C3 and C'4 electrodes
Leak current flows into 3b. Therefore, the input potential of the detection unit 6 is shifted by the potential determined by C3 + C ′4 of the combined capacitances C and C ′, and the input potential of the detection unit 6 when the user touches or does not touch is determined. .
一般に静電容量は、電極間の誘電体の誘電率に比例しそ
の距離に反比例する。従って、駆動電極2b,検知電極3b
間のフレキシブルプリント基板４の基材（ポリエステル
等）の一部または全部を切り取った切り欠き部９を設け
ることにより、駆動電極2b,検知電極3b間の誘電率を低
くし、またその電極間の切り欠き部９の距離を適当にと
ることにより、フレキシブルプリント基板の基材を介し
た駆動電極2b,検知電極3b間の静電容量C4を変化させる
ことができる。Generally, the capacitance is proportional to the dielectric constant of the dielectric between the electrodes and inversely proportional to the distance. Therefore, the drive electrode 2b, the detection electrode 3b
By providing a cutout portion 9 in which a part or the whole of the base material (polyester or the like) of the flexible printed circuit board 4 is provided, the dielectric constant between the drive electrode 2b and the detection electrode 3b is lowered, and between the electrodes. By appropriately setting the distance of the cutout portion 9, the electrostatic capacitance C4 between the drive electrode 2b and the detection electrode 3b via the base material of the flexible printed board can be changed.
以上のように本実施例によれば、駆動電極2bと検知電極
3bをフレキシブルプリント基板上に複数対構成し、所定
の駆動電極2bと検知電極3b間のフレキシブルプリント基
板4bに切り欠き部９を設け、駆動電極2bと検知電極3b間
の静電容量Ｃ′４を調整することにより、検知部６への
所定の入力電位をシフトし検知部６へ入力されるすべて
の入力信号の入力電位のレベルに合わせることができ
（第３図）、結果として、使用者がタッチ電極に触れた
時の検知部６における入力電位と触れない時の検知部６
における入力電位の間に、すべての入力電位に共通した
基準電位ＶREFを設定することが可能となり、入力電位
と基準電位を比較することにより、使用者の設定が検知
できる。また、駆動電極2b及び検知電極3bの面積の制約
もなくなり駆動電極2b及び検知電極3bの形状などの設計
も簡単になり、かつ、簡単な構造にて、確実に使用者の
設定を受けつけることが可能となり、その使用性と信頼
性が向上する。As described above, according to this embodiment, the drive electrode 2b and the detection electrode
3b and a plurality of pairs constituting the flexible printed circuit board, a flexible printed circuit board 4b in the notch portion 9 between the predetermined driving electrode 2b detection electrode 3b provided, the electrostatic capacitance C between the drive electrodes 2b and the detection electrode 3b'4 By adjusting, the predetermined input potential to the detection unit 6 can be shifted and adjusted to the level of the input potential of all input signals input to the detection unit 6 (FIG. 3), and as a result, the user The input potential in the detection unit 6 when the user touches the touch electrode and the detection unit 6 when the touch electrode does not touch
It is possible to set the reference potential VREF common to all the input potentials between the input potentials at, and the user's setting can be detected by comparing the input potential with the reference potential. In addition, there is no restriction on the area of the drive electrode 2b and the detection electrode 3b, the design of the shape of the drive electrode 2b and the detection electrode 3b is simplified, and the user's settings can be reliably received with a simple structure. It becomes possible and its usability and reliability are improved.
なお、本実施例では、駆動電極2bと検知電極3bの形状
は、長方形としたが、その形状は略Ｅ字型，略Ｈ型でも
良く、要は駆動電極2b,検知電極3bは互いに電気的に絶
縁され、フレキシブルプリント基板4b上に構成されてお
れば良い。また、切り欠き部９は駆動電極2bと検知電極
3bの間に設けているが、駆動信号線21と検知信号線31の
間に切り欠き部を設けても同様の効果は得られる。要
は、フレキシブルプリント基板4b上に構成された電源に
接続されている導電部と検知部６に接続されている所定
の導電部の間の静電容量を調整できれば良い。また本実
施例では、平面パネル１の表面にタッチ電極８を設けて
いるが、タッチ電極８がない場合は、使用者の指がタッ
チ電極８と同様の役目をはたすために別にタッチ電極８
はなくても同様の効果がでる。In this embodiment, the drive electrode 2b and the detection electrode 3b have a rectangular shape, but the drive electrode 2b and the detection electrode 3b may have a substantially E shape or a substantially H shape. It is sufficient if it is insulated from the above and is formed on the flexible printed circuit board 4b. In addition, the cutout portion 9 includes the drive electrode 2b and the detection electrode.
Although provided between 3b, the same effect can be obtained by providing a notch between the drive signal line 21 and the detection signal line 31. In short, it suffices that the electrostatic capacitance between the conductive portion connected to the power source formed on the flexible printed circuit board 4b and the predetermined conductive portion connected to the detection portion 6 can be adjusted. Further, in the present embodiment, the touch electrode 8 is provided on the surface of the flat panel 1, but when the touch electrode 8 is not provided, the user's finger plays the same role as the touch electrode 8 and the touch electrode 8 is separately provided.
Even without it, the same effect can be obtained.
発明の効果 以上のように本発明は、駆動電極及びそれに接続された
駆動信号線から成る駆動電極部と検知電極及びそれに接
続された検知信号線から成る検知電極部をフレキシブル
基板上に複数対構成し、駆動電極部と検知電極部の間の
フレキシブル基板に切り欠き部を設け、かつそのフレキ
シブルプリント基板を誘電体からなる平板状パネルの裏
面に設けることにより、切り欠き部で駆動電極部と検知
電極部の静電容量を調整することが可能となり、結果と
して、使用者が平板状パネル表面の所定位置を触れない
時（ノータッチ時）の入力電位と触れた時（タッチ時）
の入力電位をほぼ合せることができるため、複数のすべ
ての入力電位に対して共通の使用者が設定を判別する基
準電位が設定できる。EFFECTS OF THE INVENTION As described above, according to the present invention, a plurality of pairs of drive electrode portions including drive electrodes and drive signal lines connected thereto and detection electrode portions including detection electrodes and detection signal lines connected thereto are formed on a flexible substrate. The flexible printed circuit board between the drive electrode section and the detection electrode section is provided with a cutout section, and the flexible printed board is provided on the back surface of the flat plate panel made of a dielectric material. It becomes possible to adjust the electrostatic capacity of the electrode part, and as a result, when the user touches the input potential when touching a predetermined position on the flat panel surface (no touch) (when touching)
Since the input potentials can be substantially matched, the common user can set the reference potential for all of the plurality of input potentials.
その結果、すべての平板状パネルからの使用者の設定を
確実に検知できるために、使用性と信頼性を向上するこ
とができ、その効果は大なるものがある。As a result, the user's settings from all flat panels can be reliably detected, so that usability and reliability can be improved, and the effect is great.
第１図は本発明の一実施例を示す入力装置の平板状パネ
ルの裏面から見た平面図、第２図は同平板状パネルを用
いた入力装置の断面図、第３図は同平板状パネルを用い
た入力装置の入力電位を示す図、第４図は従来の入力装
置の平板状パネルの裏面から見た平面図、第５図は従来
の入力装置の断面図である。 １……平板状パネル、2b……駆動電極、3b……検知電
極、4b……フレキシブルプリント基板、５……電源、６
……検知部。FIG. 1 is a plan view of a flat panel of an input device according to an embodiment of the present invention seen from the back side, FIG. 2 is a sectional view of the input device using the flat panel, and FIG. FIG. 4 is a diagram showing an input potential of an input device using a panel, FIG. 4 is a plan view seen from the back surface of a flat panel of a conventional input device, and FIG. 5 is a sectional view of the conventional input device. 1 ... Flat panel, 2b ... Drive electrode, 3b ... Detection electrode, 4b ... Flexible printed circuit board, 5 ... Power supply, 6
...... Detection unit.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20686285AJPH0685292B2 (en) | 1985-09-19 | 1985-09-19 | Equipment input device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20686285AJPH0685292B2 (en) | 1985-09-19 | 1985-09-19 | Equipment input device |
| Publication Number | Publication Date |
|---|---|
| JPS6266524A JPS6266524A (en) | 1987-03-26 |
| JPH0685292B2true JPH0685292B2 (en) | 1994-10-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20686285AExpired - LifetimeJPH0685292B2 (en) | 1985-09-19 | 1985-09-19 | Equipment input device |
| Country | Link |
|---|---|
| JP (1) | JPH0685292B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4868768B2 (en)* | 2005-04-22 | 2012-02-01 | 株式会社東芝 | refrigerator |
| JP2007213845A (en)* | 2006-02-07 | 2007-08-23 | Jobu:Kk | Capacitance touch sensor, bed-leaving situation detection device using sensor, and room monitoring system using detection device |
| Publication number | Publication date |
|---|---|
| JPS6266524A (en) | 1987-03-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |