JPH09319520A - Coordinate input display device - Google Patents
Coordinate input display deviceInfo
- Publication number
- JPH09319520A JPH09319520A JP13643996A JP13643996A JPH09319520A JP H09319520 A JPH09319520 A JP H09319520A JP 13643996 A JP13643996 A JP 13643996A JP 13643996 A JP13643996 A JP 13643996A JP H09319520 A JPH09319520 A JP H09319520A
- Authority
- JP
- Japan
- Prior art keywords
- comb
- shaped sensor
- axis direction
- display device
- liquid crystal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 5
- 230000005674 electromagnetic induction Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 4
- 238000000059 patterning Methods 0.000 description 3
- 229910004205 SiNX Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910003070 TaOx Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- User Interface Of Digital Computer (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子ペンによるデ
ータ処理システム用の情報入力装置に関する。より具体
的には、本発明はタブレットまたはコンピュータ表示装
置内に配置され、電子ペン等の情報入力指示器で指示さ
れた座標位置を検出し、これによって得られる情報をコ
ンピュータ表示装置に表示する座標入力表示装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information input device for an electronic pen data processing system. More specifically, the present invention is arranged in a tablet or a computer display device, detects the coordinate position indicated by an information input indicator such as an electronic pen, and displays the information obtained thereby on the computer display device. The present invention relates to an input display device.
【０００２】[0002]
【従来の技術】電子ペン入力による座標入力装置はコン
ピュータ表示装置内に組込む事によって、従来のキーボ
ード又は、マウスによる入力媒体よりも、より簡単にデ
ータ入力手段を提供することは、当技術分野では周知で
ある。特に携帯用のコンピュータにおいては、携帯性、
操作性の良いものが追求されており、電子ペンによる情
報入力が最も有力な入力方式といえる。2. Description of the Related Art It is known in the art to provide a coordinate input device using an electronic pen input in a computer display device to provide a data input means more easily than a conventional keyboard or mouse input medium. It is well known. Especially in a portable computer, portability,
It has been pursued to have good operability, and it can be said that inputting information with an electronic pen is the most effective input method.
【０００３】座標位置の検出方式として従来、考案され
ている電気的結合方式として大きく分けて、電磁誘導方
式と静電結合による方式がある。As a coordinate position detecting method, an electric coupling method conventionally devised is roughly divided into an electromagnetic induction method and an electrostatic coupling method.
【０００４】従来の電磁誘導方式による座標入力装置は
例えば特開平２−１６２４１０号公報に基本原理のひと
つがあるように、Ｘ軸及びＹ軸両方向が互いに直交する
ようにタブレット側に配置されたループコイルと情報入
力指示器との間で電磁波信号の送受信を行い、情報入力
指示器で指示された座標位置を特定する方式が考案され
ている。A conventional coordinate input device using an electromagnetic induction system has a loop arranged on the tablet side such that both X-axis and Y-axis directions are orthogonal to each other, as one of the basic principles is disclosed in, for example, Japanese Unexamined Patent Publication No. Hei 2-162410. A method has been devised in which an electromagnetic wave signal is transmitted and received between the coil and the information input indicator to specify the coordinate position indicated by the information input indicator.
【０００５】この様な入力装置を備えた座標入力装置に
配置されている、電磁波信号を送受するループコイル及
び選択回路を図１に示す。複数のループコイル１は２次
元的に配置され、各々の座標位置におけるループコイル
１は互いに重なり合うように配線されており、ループコ
イル１の切り替えは２つの選択回路２により構成されて
いる。FIG. 1 shows a loop coil for transmitting and receiving electromagnetic wave signals and a selection circuit arranged in a coordinate input device having such an input device. The plurality of loop coils 1 are two-dimensionally arranged, the loop coils 1 at respective coordinate positions are wired so as to overlap each other, and the switching of the loop coils 1 is configured by two selection circuits 2.
【０００６】しかしながら、これらの方法の中で、座標
検出機能を備えたコンピュータ表示装置に適用する場
合、表示画面内にループコイル状の電極を透明性導電膜
で配設する方法は、通常の櫛型電極に比べて、一電極当
たりの配線長が大きくなることによってコイル自体の抵
抗値が高くなるという欠点があり、電極がループ形状で
あるため配線領域が大きくなる等の欠点があった。However, among these methods, when applied to a computer display device having a coordinate detection function, the method of arranging the loop coil-shaped electrode with a transparent conductive film in the display screen is a usual comb. As compared with the die electrode, there is a drawback that the resistance value of the coil itself increases due to a longer wiring length per electrode, and there is a drawback that the wiring area becomes larger because the electrode has a loop shape.
【０００７】また、静電結合方式を利用した座標位置検
出機能を備えたコンピュータ表示装置を液晶表示装置に
適用した例が特開平６−３１７７８３にあるように、ア
クティブマトリクス型液晶表示装置の各画素にデータ入
出力用の電極を画素電極と併設して配置された構造をと
っている。Further, as shown in Japanese Patent Laid-Open No. 6-317783, an example in which a computer display device having a coordinate position detecting function utilizing an electrostatic coupling system is applied to a liquid crystal display device, each pixel of an active matrix type liquid crystal display device is disclosed. In addition, the data input / output electrodes are arranged side by side with the pixel electrodes.
【０００８】しかしながら、アクティブマトリクス型液
晶表示装置に画素電極と併設して座標検出用電極を配置
することは開口率の低下を招き、これにより光の透過率
が低下するという欠点がある。また、静電結合方式では
位置検出は可能ではあるが、筆圧検出はできないという
欠点があった。However, arranging the coordinate detection electrode in parallel with the pixel electrode in the active matrix type liquid crystal display device has a drawback that the aperture ratio is lowered and thereby the light transmittance is lowered. Further, although the electrostatic coupling method can detect the position, it has a drawback that it cannot detect the writing pressure.
【０００９】[0009]
【発明が解決しようとする課題】この発明は、前記、電
磁誘導方式による座標入力装置において位置検出部の信
号受信感度を低下させることなく、ループコイル自体の
形状を液晶表示装置等に配線しやすい形状に改善し、特
にアクティブマトリクス型液晶表示装置に適用する場
合、開口率を低下させず、透明性導電膜として配設して
も配線抵抗を極力小さくなる様な電極形状の座標入力表
示装置を提供することを目的とする。SUMMARY OF THE INVENTION According to the present invention, the shape of the loop coil itself can be easily wired to a liquid crystal display device or the like without lowering the signal receiving sensitivity of the position detecting section in the coordinate input device of the electromagnetic induction system. In the case of improving the shape, particularly when applied to an active matrix type liquid crystal display device, an electrode-shaped coordinate input display device that does not reduce the aperture ratio and minimizes the wiring resistance even if it is provided as a transparent conductive film is provided. The purpose is to provide.
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に、本発明の座標入力表示装置における電磁波信号受信
用センサの基本的な構成を図２に示す。本発明の構成
は、ループコイル形状ではなく、櫛状のセンサがＸ軸方
向及びＹ軸方向に複数本配置され、一つのマトリクスを
形成し、このマトリクスで配線された櫛状センサの全領
域部分の下部にアース層４を配設し、Ｘ軸方向及びＹ軸
方向の櫛状センサ群の一端をこのアース層に接続させ、
もう他端を選択回路２に接続させて、切り替え信号によ
り選択回路２を制御し、順次櫛状センサを選択する。こ
れら基本構成をとることにより、図３に示す様に電気的
にはループコイルを２次元的に平面に配設するのではな
く、ＸＹ平面に対し垂直に複数のループコイルが並んで
いる状態と等価となる。In order to achieve the above object, a basic structure of an electromagnetic wave signal receiving sensor in a coordinate input display device of the present invention is shown in FIG. According to the configuration of the present invention, a plurality of comb-shaped sensors, not the loop coil shape, are arranged in the X-axis direction and the Y-axis direction to form one matrix, and the entire area of the comb-shaped sensor wired in this matrix. A ground layer 4 is provided underneath, and one end of the comb-shaped sensor group in the X-axis direction and the Y-axis direction is connected to this ground layer.
The other end is connected to the selection circuit 2 and the selection circuit 2 is controlled by the switching signal to sequentially select the comb-shaped sensor. By adopting these basic configurations, the loop coils are not arranged two-dimensionally on a plane electrically as shown in FIG. 3, but a plurality of loop coils are arranged perpendicularly to the XY plane. Is equivalent.
【００１１】また、本発明をコンピュータ表示装置に適
用する場合、例えばアクティブマトリクス型液晶表示装
置における表示面と反対の背面側に配され、マトリクス
状に表示用画素電極、走査信号電極、データ信号電極及
び薄膜トランジスタを有する同一基板上に前記のＸ軸方
向櫛状センサと走査信号電極とを絶縁層を介して重畳配
置し、さらにＹ軸方向櫛状センサとデータ信号電極とを
層間絶縁して重畳配置する。When the present invention is applied to a computer display device, for example, it is arranged on the back surface side opposite to the display surface in an active matrix type liquid crystal display device, and the display pixel electrodes, scanning signal electrodes and data signal electrodes are arranged in a matrix. Further, the X-axis direction comb-shaped sensor and the scanning signal electrode are superposed on each other on the same substrate having the thin film transistor via an insulating layer, and the Y-axis direction comb-shaped sensor and the data signal electrode are superposed on each other with interlayer insulation. To do.
【００１２】アクティブマトリクス型液晶表示装置に本
発明を適用する場合には、櫛状センサを画素電極の開口
面積を低下させることなく配設することが望ましく、こ
れにより、開口率の低下を抑える事ができる。When the present invention is applied to an active matrix type liquid crystal display device, it is desirable to dispose the comb-shaped sensor without reducing the aperture area of the pixel electrode, thereby suppressing the reduction in aperture ratio. You can
【００１３】[0013]
【発明の実施の形態】本発明の概略形態図を図４に示
す。Ｘ軸方向櫛状センサ群５のＹ軸方向櫛状センサ群６
をマトリクス上に配設し、両軸方向櫛状センサ群の全配
設領域部分の下部にアース層４を配設し、Ｘ軸方向櫛状
センサ群５の一端をこのアース層４に接続し、他端を選
択回路９と接続する。また、Ｙ軸方向櫛状センサ群６の
一端をこのアース層４に接続し、他端を選択回路２と接
続する。各選択回路２から選択された信号は増幅器７を
介して後段のＸＹ軸切り替え回路８でＸ軸方向櫛状セン
サ群５からの受信信号とＹ軸方向櫛状センサ群６からの
受信信号の切り替えを行い、信号処理回路９で、位置検
出及び筆圧検出処理を行う。BEST MODE FOR CARRYING OUT THE INVENTION A schematic form of the present invention is shown in FIG. Y-axis direction comb-like sensor group 6 of X-axis direction comb-like sensor group 5
Are arranged on the matrix, and the ground layer 4 is arranged below the entire disposition region of the both-axis direction comb-shaped sensor group, and one end of the X-axis direction comb-shaped sensor group 5 is connected to this ground layer 4. , The other end is connected to the selection circuit 9. Further, one end of the Y-axis direction comb-shaped sensor group 6 is connected to the ground layer 4, and the other end is connected to the selection circuit 2. The signal selected from each selection circuit 2 is switched between the reception signal from the X-axis direction comb-shaped sensor group 5 and the reception signal from the Y-axis direction comb-shaped sensor group 6 by the XY-axis switching circuit 8 in the subsequent stage via the amplifier 7. Then, the signal processing circuit 9 performs position detection and writing pressure detection processing.
【００１４】[0014]
【実施例】本発明の実施例１について、以下に説明す
る。EXAMPLE Example 1 of the present invention will be described below.
【００１５】（実施例１）図５及び図６に本発明をアク
ティブマトリクス表示装置に適用した場合の実施例を示
す。尚、アクティブ素子としては薄膜トランジスタ（Ｔ
ＦＴ）を適用した例を示している。(Embodiment 1) FIGS. 5 and 6 show an embodiment in which the present invention is applied to an active matrix display device. As an active element, a thin film transistor (T
An example in which FT) is applied is shown.
【００１６】図５は本実施例における画素構成図を示し
ており、画素電極側透明性基板１９上に配されたＴＦＴ
２０を制御する走査信号電極１７とデータ信号電極１６
とが交差し、そしてまた絶縁層を挟んで情報入力指示器
からの電磁波信号受信用としてのＸ軸方向櫛状センサ１
３とＹ軸方向櫛状センサ１４とが交差し互いに重なり合
う状態で形成され、ＴＦＴ２０のソース電極２１はデー
タ信号電極１６と、ゲート電極は走査信号電極１７と、
ドレイン電極２２は画素電極２３と各々接続された状態
でマトリクス配列されている。FIG. 5 shows a pixel configuration diagram in this embodiment, in which the TFT arranged on the pixel electrode side transparent substrate 19 is provided.
Scan signal electrode 17 and data signal electrode 16 controlling 20
X-axis direction comb-shaped sensor 1 for receiving an electromagnetic wave signal from an information input indicator with an insulating layer sandwiched between
3 and the Y-axis direction comb-shaped sensor 14 intersect each other and overlap each other, and the source electrode 21 of the TFT 20 is the data signal electrode 16 and the gate electrode is the scanning signal electrode 17.
The drain electrodes 22 are arranged in a matrix so as to be connected to the pixel electrodes 23, respectively.
【００１７】図６は、図５のＡ-Ａ’間におけるアクテ
ィブマトリクス型液晶表示装置の断面図である。本実施
例の基本構造は、液晶１２を挟んで互いに対向する２つ
の透明性基板を有し、対向電極１１側の透明性基板１０
は情報入力対象面として、画素電極側の透明性基板１９
は背面側として配されている。画素電極側の透明性基板
１９上には走査信号電極１７とデータ信号電極１６がゲ
ート絶縁膜１８を挟んで配設されており、さらに電子ペ
ン等の情報入力指示器からの電磁波信号受信用としての
Ｘ軸方向櫛状センサ１３とＹ軸方向櫛状センサ１４がセ
ンサ絶縁膜１５を挟んで互いに直交して配設されてい
る。FIG. 6 is a sectional view of the active matrix type liquid crystal display device taken along the line AA 'in FIG. The basic structure of the present embodiment has two transparent substrates facing each other with the liquid crystal 12 interposed therebetween, and the transparent substrate 10 on the counter electrode 11 side.
Is a transparent substrate 19 on the pixel electrode side as a surface for inputting information.
Is arranged as the back side. A scanning signal electrode 17 and a data signal electrode 16 are provided on a transparent substrate 19 on the pixel electrode side with a gate insulating film 18 sandwiched therebetween, and further for receiving an electromagnetic wave signal from an information input indicator such as an electronic pen. The X-axis direction comb-shaped sensor 13 and the Y-axis direction comb-shaped sensor 14 are arranged orthogonal to each other with the sensor insulating film 15 interposed therebetween.
【００１８】このように液晶表示デバイス内に情報入力
指示器からの電磁波信号を受信する櫛状センサを各画素
を挟んで格子状に配設することで、情報入力指示器から
発生された電磁波信号の信号レベル及び周波数変化量を
Ｘ軸方向櫛状センサ１３とＹ軸方向櫛状センサ１４を選
択回路２で順次選択して受信することにより、信号処理
回路９で信号レベルは位置情報に、周波数変化は筆圧情
報として信号処理することにより、情報入力指示器の位
置及び筆圧を特定し、コンピュータ表示画面上にそれら
情報を表示させるものである。By thus arranging the comb-like sensor for receiving the electromagnetic wave signal from the information input indicator in the liquid crystal display device in a grid pattern with each pixel interposed therebetween, the electromagnetic wave signal generated from the information input indicator can be obtained. The signal level and the frequency change amount of the X-axis direction comb sensor 13 and the Y-axis direction comb sensor 14 are sequentially selected and received by the selection circuit 2, so that the signal processing circuit 9 outputs the signal level to the position information and the frequency. The change is to perform signal processing as writing pressure information to specify the position and writing pressure of the information input indicator, and display the information on the computer display screen.
【００１９】前記Ｘ軸方向櫛状センサ１３及びＹ軸方向
櫛状センサ１４の配設方法としては、データ信号電極１
６をパターニング後、その上に、プラズマＣＶＤ法等に
より、ＳｉＮｘ、ＳｉＯｘ、ＴａＯｘなどの材質でセン
サ絶縁膜１５を厚さ３００〜６００ｎｍで成膜し、その
上にＸ軸方向櫛状センサ１３をスパッタ法により、Ｔ
ａ、Ｔｉ、Ａｌ、Ｃｒ等の金属材料で透明性絶縁膜上に
堆積し、その後、パターニングして、作成される。さら
に、センサ絶縁膜１５を前記方法により再度、成膜し、
Ｙ軸方向櫛状センサ１４をＸ軸方向櫛状センサ１３と同
様の方法で、パターニングする。As a method of disposing the X-axis direction comb-shaped sensor 13 and the Y-axis direction comb-shaped sensor 14, the data signal electrode 1 is used.
After patterning 6, the sensor insulating film 15 is formed thereon with a thickness of 300 to 600 nm using a material such as SiNx, SiOx, TaOx by plasma CVD or the like, and the X-axis direction comb sensor 13 is formed thereon. T by the sputtering method
It is formed by depositing a metal material such as a, Ti, Al, and Cr on the transparent insulating film, and then patterning. Further, the sensor insulating film 15 is formed again by the above method,
The Y-axis direction comb-shaped sensor 14 is patterned by the same method as the X-axis direction comb-shaped sensor 13.
【００２０】各櫛状センサはパターン幅数μｍで、面抵
抗が数百Ω程度で極力低抵抗にパターニングすることが
望ましい。これは情報入力指示器からの電磁波信号の信
号レベルを極力低下させずに各櫛状センサで受信するた
めである。It is desirable that each comb-shaped sensor has a pattern width of several μm and a surface resistance of about several hundred Ω and is patterned to have a resistance as low as possible. This is because each comb-shaped sensor receives the electromagnetic wave signal from the information input indicator without reducing the signal level as much as possible.
【００２１】他の方法として、実施例２を以下に示す。As another method, Example 2 will be described below.
【００２２】（実施例２）図７、図８に他の方法でＸ軸
方向櫛状センサ１３及びＹ軸方向櫛状センサ１４を配設
する方法を示す。尚、液晶表示装置は実施例１と同様に
ＴＦＴを利用したアクティブマトリクス型液晶表示装置
に適用する。(Embodiment 2) FIGS. 7 and 8 show a method of disposing the X-axis direction comb-shaped sensor 13 and the Y-axis direction comb-shaped sensor 14 by another method. The liquid crystal display device is applied to an active matrix type liquid crystal display device using a TFT as in the first embodiment.
【００２３】図７は本実施例における画素構成図を示し
ており、画素電極側透明性基板１９上に配されたＴＦＴ
２０を制御する走査信号電極１７と平行にＸ軸方向櫛状
センサ１３が配設され、これら２つのパターンと交差し
て、データ信号電極１６とＹ軸方向櫛状センサ１４が平
行に配設された状態で形成され、ＴＦＴ２０のソース電
極２１はデータ信号電極１６と、ゲート電極は走査信号
電極１７と、ドレイン電極２２は画素電極２３と各々接
続された状態でマトリクス配列されている。FIG. 7 shows a pixel configuration diagram in this embodiment, in which the TFT arranged on the pixel electrode side transparent substrate 19 is provided.
The X-axis direction comb-shaped sensor 13 is arranged in parallel with the scanning signal electrode 17 for controlling 20, and the data signal electrode 16 and the Y-axis direction comb-shaped sensor 14 are arranged in parallel so as to intersect these two patterns. The TFT 20 has a source electrode 21 connected to the data signal electrode 16, a gate electrode connected to the scanning signal electrode 17, and a drain electrode 22 connected to the pixel electrode 23 in a matrix arrangement.
【００２４】図８は図７のＢ−Ｂ’間におけるアクティ
ブマトリクス型液晶表示装置の断面図である。本実施例
の基本構造は、液晶１２を挟んで互いに対向する２つの
透明性基板を有し、対向電極１１側の透明性基板１０は
情報入力対象面として、画素電極側透明性基板１９は背
面側として配されている。画素電極側透明性基板１９上
には走査信号電極１７とデータ信号電極１６がゲート絶
縁膜１８を挟んで配設されており、さらに電子ペン等の
情報入力指示器からの電磁波信号受信用としてのＸ軸方
向櫛状センサ１３とＹ軸方向櫛状センサ１４がセンサ絶
縁膜１５を挟んで互いに直交して配設されている。FIG. 8 is a sectional view of the active matrix type liquid crystal display device taken along the line BB 'in FIG. The basic structure of the present embodiment has two transparent substrates facing each other with the liquid crystal 12 in between, the transparent substrate 10 on the counter electrode 11 side is the information input target surface, and the pixel electrode side transparent substrate 19 is the back surface. It is arranged as a side. The scanning signal electrode 17 and the data signal electrode 16 are arranged on the pixel electrode side transparent substrate 19 with the gate insulating film 18 interposed therebetween. Further, the scanning signal electrode 17 and the data signal electrode 16 are provided for receiving an electromagnetic wave signal from an information input indicator such as an electronic pen. The X-axis direction comb-shaped sensor 13 and the Y-axis direction comb-shaped sensor 14 are arranged orthogonal to each other with the sensor insulating film 15 interposed therebetween.
【００２５】このように実施例１と同様に液晶表示デバ
イス内に情報入力指示器からの電磁波信号を受信する櫛
状センサを各画素を挟んで格子状に配設することで、情
報入力指示器から発生された電磁波信号の信号レベル及
び周波数変化量をＸ軸方向櫛状センサ１３とＹ軸方向櫛
状センサ１４を選択回路２で順次選択して受信すること
により、信号処理回路９で信号レベルは位置情報に、周
波数変化は筆圧情報として信号処理することにより、情
報入力指示器の位置及び筆圧を特定し、表示画面上にそ
れら情報を表示させるものである。In this manner, as in the first embodiment, the comb-shaped sensor for receiving the electromagnetic wave signal from the information input indicator is arranged in the liquid crystal display device in a grid pattern with each pixel interposed therebetween, whereby the information input indicator is provided. The signal level in the signal processing circuit 9 is obtained by sequentially selecting the signal level and frequency variation of the electromagnetic wave signal generated from the X-axis direction comb sensor 13 and the Y-axis direction comb sensor 14 by the selection circuit 2. The position information and the writing pressure of the information input indicator are specified by performing signal processing on position information and frequency change as writing pressure information, and the information is displayed on the display screen.
【００２６】前記Ｘ軸方向櫛状センサ１３及びＹ軸方向
櫛状センサ１４の配設方法としては、走査信号電極１７
とＸ軸方向櫛状センサ１３をパターニング後、その上
に、プラズマＣＶＤ法等により、ＳｉＮｘ、ＳｉＯｘ、
ＴａＯｘなどの材質でセンサ絶縁膜１５を厚さ３００〜
６００ｎｍで成膜し、その上にデータ信号電極１６とＹ
軸方向櫛状センサ１４をスパッタ法により、Ｔａ、Ｔ
ｉ、Ａｌ、Ｃｒ等の金属材料で透明性絶縁膜上に堆積
し、その後、パターニングして、作成される。As a method of disposing the X-axis direction comb-shaped sensor 13 and the Y-axis direction comb-shaped sensor 14, the scanning signal electrode 17 is used.
And the X-axis direction comb-shaped sensor 13 are patterned, and then SiNx, SiOx,
The sensor insulating film 15 is made of a material such as TaOx and has a thickness of 300 to
The film is formed at 600 nm, and the data signal electrode 16 and Y are formed on the film.
The axial comb-shaped sensor 14 is formed by Ta, T
It is formed by depositing a metal material such as i, Al, or Cr on the transparent insulating film and then patterning.
【００２７】 各櫛状センサはパターン幅数μｍで、面
抵抗が数百Ω程度で極力低抵抗にパターニングすること
が望ましい。これは情報入力指示器からの電磁波信号の
信号レベルを極力低下させずに各櫛状センサで受信する
ためである。It is desirable that each comb-shaped sensor has a pattern width of several μm and a surface resistance of about several hundred Ω and is patterned to have a resistance as low as possible. This is because each comb-shaped sensor receives the electromagnetic wave signal from the information input indicator without reducing the signal level as much as possible.
【００２８】他の方法として、実施例３を以下に示す。As another method, Example 3 will be described below.
【００２９】（実施例３）図９にＣＲＴに本発明の実施
例を示す概観図を示す。ＣＲＴ表示装置２４の表示画面
の表示側ガラス面の内側に透明性導電膜で配線された櫛
状センサ群２５をマトリクス配置し、情報入力指示器で
指示された位置、筆圧情報をもとに、表示画面に表示す
るものである。(Embodiment 3) FIG. 9 is a schematic view showing an embodiment of the present invention on a CRT. A comb-shaped sensor group 25 wired by a transparent conductive film is arranged in a matrix on the inside of the display side glass surface of the display screen of the CRT display device 24, and based on the position designated by the information input indicator and the writing pressure information. , Is displayed on the display screen.
【００３０】[0030]
【発明の効果】以上説明したように本発明の座標入力表
示装置によれば、電磁誘導方式で情報入力指示器からの
電磁波信号を受信する際に、その受信センサにあたる部
分を櫛状センサにすることにより、コンピュータ表示装
置、例えば液晶表示装置内で使用されるＴＦＴ駆動制御
用透明電極と座標入力用櫛状センサの透明電極が同一透
明電極基板の同一面に配置する事により、部品材料点数
の削減、製造工程の短縮による製造コストの削減が可能
となる。As described above, according to the coordinate input display device of the present invention, when the electromagnetic wave signal from the information input indicator is received by the electromagnetic induction system, the part corresponding to the receiving sensor is made a comb-like sensor. By arranging the transparent electrodes for TFT drive control and the transparent electrodes of the comb-shaped sensor for coordinate input used in a computer display device, for example, a liquid crystal display device, on the same surface of the same transparent electrode substrate, the number of component materials can be reduced. It is possible to reduce the manufacturing cost by reducing the number of manufacturing processes.
【００３１】前記のように本発明を適用すれば、コンピ
ュータ表示装置と座標入力装置を一体化することで、表
示画面をより薄型にすることができ、特に携帯機器等に
適用すれば、携帯性の向上が期待できる。By applying the present invention as described above, the display screen can be made thinner by integrating the computer display device and the coordinate input device. Especially, when the present invention is applied to a portable device or the like, the portability is improved. Can be expected to improve.
【００３２】座標入力部の電磁波信号受信センサ部をル
ープコイル形状ではなく、櫛状にすることにより、配線
面積を低減でき、選択回路が２分の１で済む為、コンピ
ュータ表示装置の座標入力用センサとして組み込む場合
は画素数が非常に多く、同画素数近くセンサを配設する
場合、ＸＹ両軸あわせて相当数の選択回路を必要とす
る。従って、位置の精度を高精度にするには、センサ本
数を多数必要とし、本発明による櫛状センサを使用すれ
ば、低コストでしかも座標精度の向上も期待できる。By making the electromagnetic wave signal receiving sensor section of the coordinate input section comb-shaped rather than loop coil-shaped, the wiring area can be reduced and the selection circuit can be halved. When incorporated as a sensor, the number of pixels is very large, and when the sensor is arranged close to the same number of pixels, a considerable number of selection circuits for both the XY axes are required. Therefore, a large number of sensors are required to make the position accuracy high, and the use of the comb-shaped sensor according to the present invention can be expected to improve the coordinate accuracy at low cost.
【００３３】また、位置精度の高精度化と情報入力指示
器からの筆圧情報をもとに、手書きによる自筆サインで
個人を認識することで、よりセキュリティ性の高い、サ
イン認識が実現できる。このような技術は近年、インタ
ーネットで接続されたコンピュータで電子商取引として
利用され、本発明による技術はこのような分野でもその
有効性が期待できる。Further, by recognizing the individual with a handwritten handwritten signature based on the high precision of the position accuracy and the writing pressure information from the information input indicator, it is possible to realize the signature recognition with higher security. In recent years, such a technique has been used for electronic commerce by a computer connected to the Internet, and the technique according to the present invention can be expected to be effective in such a field.
【００３４】実施例１においては、液晶表示用の透明導
電膜と座標入力用櫛状センサの透明導電膜の画素電極間
の隙間を有効に利用することで、配線面積を上げること
なく配設できる。これによって、開口率の低下を防ぎ、
ＴＦＴ液晶表示装置の明るさとしての性能を維持でき
る。In the first embodiment, by effectively utilizing the gap between the transparent conductive film for liquid crystal display and the pixel electrode of the transparent conductive film of the comb-shaped sensor for coordinate input, it can be arranged without increasing the wiring area. . This prevents a decrease in aperture ratio,
The brightness performance of the TFT liquid crystal display device can be maintained.
【００３５】実施例２においては、液晶表示用の透明導
電膜と座標入力用櫛状センサの透明導電膜を平行に配設
することで、製造工程を短縮でき、配線面積は実施例１
に比べると、大きくなるが、ＴＦＴの材質を多結晶シリ
コンにすることにより、アクティブ素子サイズをａ−Ｓ
ｉ・ＴＦＴに比べて小さくでき、開口率を余り下げずに
済むような工夫をすることは可能である。In the second embodiment, by disposing the transparent conductive film for liquid crystal display and the transparent conductive film of the comb-shaped sensor for coordinate input in parallel, the manufacturing process can be shortened and the wiring area can be reduced.
Compared with the above, the active element size is aS by changing the material of the TFT to polycrystalline silicon.
It can be made smaller than the i-TFT, and it is possible to devise so that the aperture ratio does not need to be lowered so much.
【図１】従来の座標入力表示装置で適用されるループコ
イル状センサを示す。FIG. 1 shows a loop coil sensor applied in a conventional coordinate input display device.
【図２】本発明で考案した櫛状センサの基本構成図を示
す。FIG. 2 shows a basic configuration diagram of a comb-shaped sensor devised by the present invention.
【図３】本発明で考案した櫛状センサの等価回路構成図
を示す。FIG. 3 shows an equivalent circuit configuration diagram of a comb-like sensor devised by the present invention.
【図４】櫛状センサを使用した座標入力表示装置の実施
形態図を示す。FIG. 4 shows an embodiment of a coordinate input display device using a comb sensor.
【図５】本発明の実施例１を示す液晶表示装置の画素構
成図を示す。FIG. 5 is a pixel configuration diagram of a liquid crystal display device showing Embodiment 1 of the present invention.
【図６】本発明の実施例１を示す液晶表示装置の断面図
を示す。FIG. 6 is a cross-sectional view of a liquid crystal display device showing Embodiment 1 of the present invention.
【図７】本発明の実施例２を示す液晶表示装置の画素構
成図を示す。FIG. 7 is a pixel configuration diagram of a liquid crystal display device showing Embodiment 2 of the present invention.
【図８】本発明の実施例２を示す液晶表示装置の断面図
を示す。FIG. 8 is a sectional view of a liquid crystal display device showing Embodiment 2 of the present invention.
【図９】本発明の実施例３を示すＣＲＴ表示装置の概観
図を示す。FIG. 9 is a schematic view of a CRT display device showing a third embodiment of the present invention.
１ ループコイル ２ 選択回路 ３ 櫛状センサ ４ アース層 ５ Ｘ軸方向櫛状センサ群 ６ Ｙ軸方向櫛状センサ群 ７ 増幅器 ８ ＸＹ軸切り替え回路 ９ 信号処理回路 １０ 透明性基板 １１ 対向電極 １２ 液晶 １３ Ｘ軸方向櫛状センサ １４ Ｙ軸方向櫛状センサ １５ センサ絶縁膜 １６ データ信号電極 １７ 走査信号電極 １８ ゲート絶縁膜 １９ 画素電極側透明性基板 ２０ ＴＦＴ ２１ ソース電極 ２２ ドレイン電極 ２３ 画素電極 ２４ ＣＲＴ表示装置 ２５ 櫛状センサ群 DESCRIPTION OF SYMBOLS 1 loop coil 2 selection circuit 3 comb-shaped sensor 4 earth layer 5 X-axis direction comb-shaped sensor group 6 Y-axis direction comb-shaped sensor group 7 amplifier 8 XY-axis switching circuit 9 signal processing circuit 10 transparent substrate 11 counter electrode 12 liquid crystal 13 X-axis direction comb-shaped sensor 14 Y-axis direction comb-shaped sensor 15 Sensor insulating film 16 Data signal electrode 17 Scan signal electrode 18 Gate insulating film 19 Pixel electrode side transparent substrate 20 TFT 21 Source electrode 22 Drain electrode 23 Pixel electrode 24 CRT display Device 25 Comb-shaped sensor group
Claims (3)
手段を有する情報入力指示器からの電磁波信号を受信及
び検出することにより前記情報入力指示器によって指示
された位置の座標値を求める座標検出装置であって、コ
ンピュータ表示器を含む装置内に複数の上記櫛状センサ
をＸ軸方向に併設してなるＸ軸方向の櫛状センサ群及び
複数の櫛状センサをＹ軸方向に併設してなるＹ軸方向の
櫛状センサ群の各櫛状センサの一端を櫛状センサを併設
している全領域の下部に設けたアース層に接地すること
によって構成される位置検出部と、Ｘ軸方向櫛状センサ
群の他端を順次選択するＸ軸方向の選択手段と、Ｙ軸方
向櫛状センサ群の他端を順次選択するＹ軸方向の選択手
段で構成されることを特徴とする座標入力表示装置。1. A coordinate detecting device for obtaining a coordinate value of a position indicated by the information input indicator by receiving and detecting an electromagnetic wave signal from the information input indicator having an electromagnetic wave generating means for generating at a predetermined frequency. In addition, a comb-shaped sensor group in the X-axis direction and a plurality of comb-shaped sensors arranged side by side in the X-axis direction are arranged side by side in the device including a computer display. A position detection unit configured by grounding one end of each comb-shaped sensor of the comb-shaped sensor group in the Y-axis direction to an earth layer provided at the bottom of the entire area where the comb-shaped sensor is provided, and a comb-shaped sensor in the X-axis direction. Input display characterized by comprising an X-axis direction selecting means for sequentially selecting the other end of the linear sensor group and a Y-axis direction selecting means for sequentially selecting the other end of the Y-axis direction comb-shaped sensor group. apparatus.
おいて表示を行う前面側と対向面側に配され、マトリク
ス状に配設された表示用の画素電極、走査信号線、デー
タ信号線及びアクティブ素子を有する基板上に、前記Ｘ
軸方向櫛状センサを走査信号線と層間絶縁を施して、上
下重設して配線することと、前記Ｙ軸方向櫛状センサを
データ信号線と層間絶縁を施して、上下重設して配線
し、情報入力指示器より指示された座標位置を前記櫛状
センサで検出し、液晶表示画面上に表示することを特徴
とする請求項１に記載の座標入力表示装置。2. A liquid crystal display device having an active element, wherein display pixel electrodes, scanning signal lines, data signal lines, and active elements, which are arranged on a front surface side and a facing surface side for displaying, and which are arranged in a matrix, are provided. X on the substrate having
The axial comb-shaped sensor is insulated from the scanning signal line by interlayer insulation and is vertically overlapped, and the Y-axis direction comb-shaped sensor is insulated from the data signal line by interlayer insulation, and is vertically overlapped. The coordinate input display device according to claim 1, wherein the coordinate position designated by the information input indicator is detected by the comb-shaped sensor and displayed on the liquid crystal display screen.
おいて表示を行う前面側と対向面側に配され、マトリク
ス状に配設された表示用の画素電極、走査信号線、デー
タ信号線及びアクティブ素子を有する基板上に、前記Ｘ
軸方向櫛状センサを走査信号線と層間絶縁を施して、相
互併設して平行に配線することと、前記Ｙ軸方向櫛状セ
ンサをデータ信号線と層間絶縁を施して、相互併設して
平行に配線し、情報入力指示器より指示された座標位置
を前記櫛状センサで検出し、液晶表示画面上に表示する
ことを特徴とする請求項１に記載の座標入力表示装置。3. A liquid crystal display device having active elements, comprising display pixel electrodes, scanning signal lines, data signal lines, and active elements, which are arranged on a front surface side and a facing surface side for displaying and arranged in a matrix. X on the substrate having
The axial comb-shaped sensor is insulated from the scanning signal line by inter-layer insulation and wired in parallel with each other, and the Y-axis comb-shaped sensor is insulated from the data signal line by inter-layer insulation and mutually arranged in parallel. The coordinate input display device according to claim 1, wherein the coordinate input position is wired on the liquid crystal display device, the coordinate position designated by the information input indicator is detected by the comb-shaped sensor, and the coordinate position is displayed on the liquid crystal display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13643996A JP3834778B2 (en) | 1996-05-30 | 1996-05-30 | Coordinate input display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13643996A JP3834778B2 (en) | 1996-05-30 | 1996-05-30 | Coordinate input display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09319520A true JPH09319520A (en) | 1997-12-12 |
| JP3834778B2 JP3834778B2 (en) | 2006-10-18 |
Family
ID=15175157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13643996A Expired - Fee Related JP3834778B2 (en) | 1996-05-30 | 1996-05-30 | Coordinate input display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3834778B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7279641B2 (en) | 2005-10-21 | 2007-10-09 | Canon Kabushiki Kaisha | Wiring board and wiring apparatus |
| JP2012530307A (en) * | 2009-06-19 | 2012-11-29 | タイグエン テクノロジー （シェン＿ゼン） カンパニー リミテッド | Electromagnetic induction type liquid crystal panel, manufacturing method thereof, and liquid crystal display device |
| US8493350B2 (en) | 2009-08-26 | 2013-07-23 | Samsung Display Co., Ltd. | Touch panel using a light sensing method, method for detecting a touch location, and recording medium storing program to execute the method |
| EP2698688A4 (en) * | 2011-04-15 | 2015-01-14 | Sharp Kk | Display device, method for driving display device, and electronic equipment |
| JP2016194580A (en) * | 2015-03-31 | 2016-11-17 | 株式会社ジャパンディスプレイ | Display device |
-
1996
- 1996-05-30 JP JP13643996A patent/JP3834778B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7279641B2 (en) | 2005-10-21 | 2007-10-09 | Canon Kabushiki Kaisha | Wiring board and wiring apparatus |
| JP2012530307A (en) * | 2009-06-19 | 2012-11-29 | タイグエン テクノロジー （シェン＿ゼン） カンパニー リミテッド | Electromagnetic induction type liquid crystal panel, manufacturing method thereof, and liquid crystal display device |
| US8493350B2 (en) | 2009-08-26 | 2013-07-23 | Samsung Display Co., Ltd. | Touch panel using a light sensing method, method for detecting a touch location, and recording medium storing program to execute the method |
| EP2698688A4 (en) * | 2011-04-15 | 2015-01-14 | Sharp Kk | Display device, method for driving display device, and electronic equipment |
| JP2016194580A (en) * | 2015-03-31 | 2016-11-17 | 株式会社ジャパンディスプレイ | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3834778B2 (en) | 2006-10-18 |
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