【発明の詳細な説明】し発明の技術分野１本発明はタッチスクリーンに関する。[Detailed description of the invention]Technical field of invention 1The present invention relates to touch screens.
［発明の技鞘的背娯］従来、例えばＣＲＴ上に表示された種々の文字、数字、
図形、２弓等を人間が見て思考し、この結果をＣＲＴを
通し・て計算機に伝達する手段として、例えばライトペ
ンが多用されτいる。[Technical Background of the Invention] Conventionally, various characters, numbers, etc. displayed on a CRT, for example,
For example, a light pen is often used as a means for humans to look at figures, arrows, etc. and think about them, and to transmit the results to a computer via a CRT.
近年、このライトペンの代りに人の指がその役割を果す
タッチスクリーンをＣＲＴ全面に取付け−Ｃ用いる透明
な座標位慌入力装胃が開発されている。このタッチスク
リーンは２枚の導電性薄膜をタッチされない限り接触し
ないＪ、うに僅か１，７隙間を隔でて重ね合せ、一方の
導電性スクリーンの縁端よりＸ方向（左右り向）に平行
に電流を通し、Ｘ方向の位置に対応する電位を生じさせ
、次にＹ方向（上下方向）に平行電流を通し、Ｙ方向位
置に対応する電位を形成することにより構成されＣいる
。In recent years, a transparent coordinate input device has been developed in which a touch screen, in which a human finger plays the role of a light pen, is attached to the entire surface of a CRT. This touch screen consists of two conductive thin films that do not come into contact unless touched, with a gap of only 1.7 sq. It is constructed by passing a current to generate a potential corresponding to a position in the X direction, and then passing a parallel current in the Y direction (vertical direction) to form a potential corresponding to a position in the Y direction.
このような従来のタッチスクリーンでは、人間がこのタ
ッチスクリーンを指でタッチすると一点にもう１枚−の
導電性薄膜が接触し、この時に導電性薄膜を通してＸ、
Ｙ方向の電位を読み取ることにより座標入力が行なわれ
る。In such conventional touch screens, when a person touches the touch screen with a finger, another conductive thin film comes into contact with one point, and at this time, X, X,
Coordinate input is performed by reading the potential in the Y direction.
［背景技術の問題点］しかしながら、このような従来のタップスクリーンでは
、タッチ圧力が弱いと接触不良によりりッチ点の電位が
正しく導電性薄膜に反映されず、タッチ点とは無関係な
座標値が認識されるおそれがある。[Problems with the Background Art] However, in such conventional tap screens, if the touch pressure is weak, the potential of the touch point is not reflected correctly on the conductive thin film due to poor contact, and coordinate values unrelated to the touch point are may be recognized.
また、離れた複数点が同時にタッチされ７ｊ場合には、
複数の座標点が読み取られることはなく、中間点に相当
する一点のみが読み取られるという問題がある。Also, if multiple distant points are touched at the same time,
The problem is that multiple coordinate points are not read, but only one point corresponding to an intermediate point is read.
［発明の目的］本発明はかかる従来の事情に対処してなされたちのＣ１
タッチ圧力に関係なく、また複数の座標点をも読み取る
ことのできるタッチスクリーンを提供しようとするもの
である。[Object of the invention] The present invention has been made in response to such conventional circumstances.
The aim is to provide a touch screen that can read multiple coordinate points regardless of touch pressure.
［発明の概要］づなわち本発明は、非導電性膜面上に配置される複数本
の導電線と、これらの導電線と微小間隔をおい′−Ｃ配
置されこれらの導電線の全面を覆う導電性薄膜と、前記
導電線にそれぞれ異なる周波数の交流電圧を印加する交
流電圧源ど、前記導電性薄膜の前記導電線方向への押圧
によりこの導電性ｖＪ膜を導通する前記交流電圧の周波
数を検出する周波数分析器と、この周波数分析器で検出
された周波数を入力し前記導電性薄膜の抑圧部位を判断
する位置判定器とからなることを特徴とするタッチスク
リーンである。[Summary of the Invention] In other words, the present invention comprises a plurality of conductive wires disposed on a non-conductive film surface, and a conductive wire arranged at minute intervals from the conductive wires and covering the entire surface of these conductive wires. An AC voltage source that applies AC voltages of different frequencies to a covering conductive thin film and the conductive wire, respectively, and the frequency of the AC voltage that conducts the conductive VJ film by pressing the conductive thin film in the direction of the conductive wire. This touch screen is characterized by comprising a frequency analyzer that detects the frequency, and a position determiner that inputs the frequency detected by the frequency analyzer and determines the suppressed portion of the conductive thin film.
［発明の実施例１以下本発明の詳細を図面に示す一実施例につい−Ｃ説明
する。[Embodiment 1 of the Invention] The details of the present invention will be described below with reference to an embodiment shown in the drawings.
第１図は本発明の一実施例のタッチスクリーンを示すも
ので、図において符号１は、例えばガラスからなる薄膜
の非導電性膜面を示し−Ｃおり、この非導電性膜面１の
前面には薄膜の導電線２が上下方向くＹ方向）にすだれ
状に多数本配設されている。この導電線２の前面には導
電性の導電性薄膜３が微小間隔をおいて配設されている
。なお、この導電性簿膜３と導電線２との絶縁は、例え
ば微小な絶縁体を点状に導電性薄膜３と導電線２との間
に配置する従来行なわれＣいる方法にょっＣいる。各導
電線２には、それぞれ交流電圧源４が接続されており、
各導電線２には、この交流電圧源４により異なる周波数
の交流電圧（ｆ ＋ 、ｆ ２・・・ｆ）が印加されで
いる。この交流電圧源４は周波数分析器５に接続されＣ
おり、また導電性薄膜３も周波数分析器５に接続されて
いる。さらに周波数分析器５には、周波数分析器５ｒ：
検出された周波数を人力し、この周波数に基づいて押Ｕ
Ｔ一部位を判断する位置判定器６が接続されている。FIG. 1 shows a touch screen according to an embodiment of the present invention. In the figure, reference numeral 1 indicates a non-conductive film surface of a thin film made of glass, for example. A large number of thin film conductive wires 2 are disposed in a sash-like manner in the vertical direction (Y direction). On the front surface of the conductive wire 2, conductive thin films 3 are disposed at small intervals. The insulation between the conductive thin film 3 and the conductive wire 2 can be achieved by a conventional method in which, for example, minute insulators are placed between the conductive thin film 3 and the conductive wire 2 in the form of dots. . An AC voltage source 4 is connected to each conductive wire 2,
AC voltages (f + , f 2 . . . f) of different frequencies are applied to each conductive wire 2 by this AC voltage source 4 . This AC voltage source 4 is connected to a frequency analyzer 5 and
The conductive thin film 3 is also connected to a frequency analyzer 5. Further, the frequency analyzer 5 includes a frequency analyzer 5r:
Manually input the detected frequency and press U based on this frequency.
A position determiner 6 for determining the T1 portion is connected.
すなわち、以上のように構成されたタッチスクリーンＣ
は、導電性薄膜３を指によりタッチすると、このタッチ
部位の導電性薄膜３が導電線２に接触し、周波数分析器
５には交流電圧源４からのいずれかの周波数の交流電流
が流れる。この交流電流の周波数の値は周波数分析器５
により分析され、この周波数分析器５からこの周波数を
入力した位置判定器６により導電性薄膜３のタッチ部位
が判断される。That is, the touch screen C configured as above
When the conductive thin film 3 is touched with a finger, the conductive thin film 3 at the touched portion comes into contact with the conductive wire 2, and an alternating current of any frequency from the alternating current voltage source 4 flows through the frequency analyzer 5. The value of the frequency of this alternating current is determined by the frequency analyzer 5.
The position determination unit 6 inputting this frequency from the frequency analyzer 5 determines the touched part of the conductive thin film 3.
なお、このように構成されたタッチスクリーンＣは、複
数点を同時にタッチした場合にも＠波数分析器５は複数
の周波数を検出することができるの０１タツヂスクリー
ンは複数点の位置を表承り−ることか可能である。In addition, with the touch screen C configured in this way, the wave number analyzer 5 can detect multiple frequencies even when multiple points are touched at the same time. -It is possible.
第２図は本発明の他の実施例を示りもので、この実施例
Ｃはタッチスクリーンの一ト下方向くＹ方向）の位置が
判断される。FIG. 2 shows another embodiment of the present invention, and in this embodiment C, the position of the touch screen in the downward direction (Y direction) is determined.
りなわら、この実施例Ｃ゛は、非導電性膜面１の前面に
一定間隔をおいで左右方向（Ｘ方向）に沿って多数の導
電線が配置され’ＣｊＦ３すＸ方、向σ？位置を検出す
ることができる。なお、これ以外は第１図に述べた実施
例と同様に構成されているのひ、同一部分には同一符号
を付しＣ説明を省略する。However, in this embodiment C, a large number of conductive wires are arranged along the left-right direction (X direction) at regular intervals on the front surface of the non-conductive film surface 1. The location can be detected. Other than this, the structure is similar to that of the embodiment described in FIG. 1, so the same parts are denoted by the same reference numerals and the explanation thereof will be omitted.
第３図は本発明のさらに他の実施例を示づものぐ、この
タッチスクリーンではＸｌｊ向およびＹ方向の両位置を
検出することがＣきる。FIG. 3 shows yet another embodiment of the present invention, in which this touch screen can detect positions in both the Xlj direction and the Y direction.
すなわち、このタッチスクリーンは、第１図および第２
図に示したタッチスクリーンを組合せて構成され°Ｃお
り、図の上層には下方から順にＸ方向位置検出用の非導
電性膜面１ａ、導電線２ａおよび導電性薄膜３ａが配設
され−（８３す、図の上層には下方から順にＹ方向位置
検出用の非導電性膜面１ｂ、導電線２ｂおよび導電性薄
膜３ｂが順次配設されている。従って、上方から導電性
神膜３ｂを押圧することにより、第１図および第２図に
述べたと同様な方法でＸ方向およびＹ方向の位置を検出
することができる。That is, this touch screen is
It is constructed by combining the touch screens shown in the figure, and in the upper layer of the figure, a non-conductive film surface 1a, a conductive wire 2a, and a conductive thin film 3a for detecting the position in the X direction are arranged in order from the bottom. 83, in the upper layer of the figure, a non-conductive film surface 1b for Y-direction position detection, a conductive line 2b, and a conductive thin film 3b are disposed in order from the bottom.Therefore, the conductive film 3b is arranged from above. By pressing, the position in the X and Y directions can be detected in the same manner as described in FIGS. 1 and 2.
すなわち、第４図に示ηように、Ｘ方向の位置はＸ方向
の位置を検出する周波数分析器５ａおよび位置判定器６
ａを介しで検出され、Ｙ方向のイ装置はＹ方向の位置を
検出する周波数分析器５ｂおよび位置判定器６ｂを介し
−Ｃ検出され、これらの信号がそれぞれ座標判定器７に
入ノｊされ、この座標判定器７に８３いて平面における
座標が判断される。That is, as shown in FIG.
The A device in the Y direction is detected via the frequency analyzer 5b and the position determiner 6b which detect the position in the Y direction, and these signals are input to the coordinate determiner 7, respectively. , this coordinate determiner 7 determines the coordinates on the plane.
［発明の効果］以上述べたように本発明のタッチスクリーンによれば、
タッチ位置を周波数で判断するので、電圧の変動による
座標値の誤認識を解消することがＣきる。また、一度に
複数点のタッチを行なつ（′も複数個所の出力が得られ
るので、同時タッチを可能にすることができ、操作点の
選択範囲を飛躍的に増加することができる。[Effects of the Invention] As described above, according to the touch screen of the present invention,
Since the touch position is determined by frequency, it is possible to eliminate misrecognition of coordinate values due to voltage fluctuations. Furthermore, since multiple points can be touched at once ('), outputs from multiple points can be obtained, making simultaneous touching possible and dramatically increasing the selection range of operating points.
すなわち、例えばタッチスクリーンの操作点をＮ個設定
すると、従来の単数タッチの場合にはＮ点の選択点しか
得られないが、例えば２点タッチにすることにより、Ｎ
（Ｉｆ−１）点の選択点を得ることができる。That is, for example, if you set N operation points on a touch screen, only N selection points can be obtained in the case of a conventional single touch, but by making a two-point touch, for example, N selection points can be obtained.
(If-1) point selection points can be obtained.
第１図は本発明の一実施例のタッチスクリーンを示す説
明図、第２図は本発明のタッチスクリーンの他の実施例
を示す説明図、第３図は本発明のタッチスクリーンのさ
らに他の実施例を示ず横断面図、第４図は第３図に示す
タッチスクリーンの信号処理系を示すブロック図で・あ
る。１・・・・・・・・・・・・非導電性膜面２・・・・・
・・・・・・・導電線３・・・・・・・・・・・・導電性薄膜４・・・・・・
・・・・・・交流電圧源５・・・・・・・・・・・・周
波数分析器６・・・・・・・・・・・・位置判定器７・
・・・・・・・・・・・座標判定器代理人弁理士
須 山 佐 −第 １ 図第４図FIG. 1 is an explanatory diagram showing a touch screen according to one embodiment of the present invention, FIG. 2 is an explanatory diagram showing another embodiment of the touch screen according to the present invention, and FIG. 3 is an explanatory diagram showing another embodiment of the touch screen according to the present invention. FIG. 4 is a cross-sectional view without showing an embodiment, and FIG. 4 is a block diagram showing a signal processing system of the touch screen shown in FIG. 3. 1...Non-conductive film surface 2...
...... Conductive wire 3... Conductive thin film 4...
...... AC voltage source 5 ...... Frequency analyzer 6 ...... Position determiner 7.
・・・・・・・・・Coordinate determiner representative patent attorney
Satoshi Suyama - Figure 1 Figure 4
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58020423AJPS59149537A (en) | 1983-02-09 | 1983-02-09 | Touch screen |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58020423AJPS59149537A (en) | 1983-02-09 | 1983-02-09 | Touch screen |
| Publication Number | Publication Date |
|---|---|
| JPS59149537Atrue JPS59149537A (en) | 1984-08-27 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58020423APendingJPS59149537A (en) | 1983-02-09 | 1983-02-09 | Touch screen |
| Country | Link |
|---|---|
| JP (1) | JPS59149537A (en) |
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