JP2010039537A - Touch panel - Google Patents

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JP2010039537A
JP2010039537A JP2008198419A JP2008198419A JP2010039537A JP 2010039537 A JP2010039537 A JP 2010039537A JP 2008198419 A JP2008198419 A JP 2008198419A JP 2008198419 A JP2008198419 A JP 2008198419A JP 2010039537 A JP2010039537 A JP 2010039537A
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electrode
substrate
line
electrodes
touch panel
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JP5174575B2 (en
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Katsumasa Kono
勝正 鴻野
Hidenori Mizumoto
英詔 水元
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Gunze Ltd
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Gunze Ltd
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Priority to JP2008198419A priority Critical patent/JP5174575B2/en
Application filed by Gunze Ltd filed Critical Gunze Ltd
Priority to KR1020117004585A priority patent/KR101329638B1/en
Priority to EP12004387A priority patent/EP2511806A3/en
Priority to PCT/JP2009/063355 priority patent/WO2010013679A1/en
Priority to CN200980130592.6A priority patent/CN102112949B/en
Priority to CN201410841804.4A priority patent/CN104635983B/en
Priority to EP09802922A priority patent/EP2330488A4/en
Priority to US13/000,634 priority patent/US8717332B2/en
Priority to TW098125703A priority patent/TWI444862B/en
Publication of JP2010039537A publication Critical patent/JP2010039537A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—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
    • G06F3/044—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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a touch panel for preventing moire from being generated in a touch panel configured by adhering electrodes of two layers. <P>SOLUTION: A touch panel 10 is provided with a substrate 12; first electrodes 14 formed on one face of the substrate 12; and second electrodes 16 formed on the other face of the substrate 12. The touch panel 10 is formed with first auxiliary lines 24 and second auxiliary lines 26. The first auxiliary lines 24 are formed on one face of the substrate 12, and the second auxiliary lines 26 are formed on the other face of the substrate 12. The first auxiliary lines 24 are formed between the first electrodes 14, and the second auxiliary lines 26 are formed between the second electrodes 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、コンピュータや電子機器のディスプレイの前面に配置されるタッチパネルに関するものである。   The present invention relates to a touch panel disposed on the front surface of a display of a computer or electronic device.

近年、コンピュータや電子機器において、押しボタンを用いずにディスプレイの表示を利用した操作の開発が盛んである。その操作のために、ディスプレイの前面に透明のタッチパネルを配置して、タッチ位置を検出する。タッチパネルの種類としては、抵抗膜方式、表面弾性波式、赤外線方式などがあり、指のタッチや近接による静電容量の変化で位置検出をする静電容量式もある。例えば特許文献１にはマトリクス状の電極(Ｘ方向、Ｙ方向の２層構造)の静電容量式タッチパネルが記載されている。   In recent years, in computers and electronic devices, development of operations using display on a display without using push buttons has been active. For this operation, a transparent touch panel is arranged on the front surface of the display to detect the touch position. As the types of touch panels, there are a resistive film type, a surface acoustic wave type, an infrared type, and the like, and there is also a capacitance type that detects a position by a change in capacitance due to finger touch or proximity. For example, Patent Document 1 describes a capacitive touch panel having matrix-like electrodes (a two-layer structure in the X direction and the Y direction).

図１０に示す従来の静電容量式タッチパネル１００は、１枚の誘電体基板１０２の一面に第１電極１０４、他面に第２電極１０８が形成されている。第１電極１０４と第２電極１０８はそれぞれ直線状の電極であり、互いに直交する方向を向いている。第１電極１０４の上方には透明樹脂でできたカバーフィルム１１２があり、カバーフィルム１１２はアクリル系の透明接着剤１１０または粘着剤によって第１電極１０４に密着されている。第２電極１０８は、アクリル系の透明接着剤１１４または粘着剤によってディスプレイ１８に密着されている。   The conventional capacitive touch panel 100 shown in FIG. 10 has a first electrode 104 formed on one surface of a single dielectric substrate 102 and a second electrode 108 formed on the other surface. Each of the first electrode 104 and the second electrode 108 is a linear electrode and faces in a direction orthogonal to each other. Above the first electrode 104 is a cover film 112 made of a transparent resin, and the cover film 112 is in close contact with the first electrode 104 by an acrylic transparent adhesive 110 or an adhesive. The second electrode 108 is in close contact with the display 18 with an acrylic transparent adhesive 114 or an adhesive.

操作者の指がタッチパネル１００に近接されると、第１電極１０４と第２電極１０８が交叉する部分の静電容量が変化する。静電容量式タッチパネル１００は、その静電容量の変化を検出して座標を求める。   When the operator's finger is brought close to the touch panel 100, the capacitance of the portion where the first electrode 104 and the second electrode 108 intersect changes. The capacitive touch panel 100 detects the change in capacitance and obtains coordinates.

従来、第１電極１０４および第２電極１０８は、誘電体基板１０２の表面にＩＴＯ（Indium Tin Oxide）などの透明導電膜を利用する。ＩＴＯは抵抗値が高く、２００Ω／□〜１０００Ω／□が一般的である。タッチパネルの面積が大きくなったとき、または手袋などでタッチしたときに十分な感度が得られず、タッチした座標が得られない場合がある。さらにＩＴＯに含まれるインジウムは希少元素であるため、できる限り使用を避けることが望まれている。   Conventionally, the first electrode 104 and the second electrode 108 use a transparent conductive film such as ITO (Indium Tin Oxide) on the surface of the dielectric substrate 102. ITO has a high resistance value, and is generally 200Ω / □ to 1000Ω / □. When the area of the touch panel becomes large or when touched with a glove or the like, sufficient sensitivity may not be obtained, and the touched coordinates may not be obtained. Furthermore, since indium contained in ITO is a rare element, it is desired to avoid using it as much as possible.

また特許文献２にはＩＴＯを使用しない静電容量式のタッチパネルが開示されている。銅または銅合金からなる電極を網目状にすることにより、電極の透過効率を７０％以上にしている。網目は、正方形などが基板の全面に並ぶようになっている。しかし、特許文献２の電極は基板の一面にあるだけである。図１０で説明したように、基板の両面に特許文献２の電極を配置したとき、電極の配置が少しでもずれるとモアレが発生する。電極を形成するときの位置精度が非常に高いものが要求され、現実的に製造は困難である。   Patent Document 2 discloses a capacitive touch panel that does not use ITO. By making the electrode made of copper or a copper alloy into a mesh shape, the transmission efficiency of the electrode is set to 70% or more. As for the mesh, squares and the like are arranged on the entire surface of the substrate. However, the electrode of Patent Document 2 is only on one surface of the substrate. As described with reference to FIG. 10, when the electrodes of Patent Document 2 are arranged on both surfaces of the substrate, moire occurs when the arrangement of the electrodes slightly deviates. It is required to have a very high positional accuracy when forming the electrode, and it is difficult to manufacture practically.

特表２００６−５１１８７９号公報JP-T-2006-511879 特開２００６−３４４１６３号公報JP 2006-344163 A

本発明の目的は、ＩＴＯを使用しない２層の電極を貼り合せたタッチパネルにおいて、モアレが発生しないタッチパネルを提供することである。   An object of the present invention is to provide a touch panel in which moire does not occur in a touch panel in which two layers of electrodes not using ITO are bonded.

タッチパネルは、基板と、前記基板の一面に形成され、一定間隔で並べられた複数の第１電極と、前記基板の他面に形成され、一定間隔で並べられ、前記複数の第１電極とで格子状になる複数の第２電極とを備える。   The touch panel includes a substrate, a plurality of first electrodes formed on one surface of the substrate and arranged at regular intervals, and a touch panel formed on the other surface of the substrate, arranged at regular intervals, and the plurality of first electrodes. And a plurality of second electrodes in a lattice shape.

本発明のタッチパネルは、上記のタッチパネルにおいて、第１電極と第２電極がそれぞれ複数の導体線によって網目を形成しており、導体線の方向がディスプレイのブラックマトリクスに対して斜め方向である。   In the touch panel of the present invention, in the touch panel described above, the first electrode and the second electrode each form a mesh with a plurality of conductor lines, and the direction of the conductor lines is oblique to the black matrix of the display.

前記一面において、第１電極同士の間に形成された第１補助線と、前記他面において、第２電極同士の間に形成された第２補助線とを備え、前記第１電極の導体線、第１補助線、第２電極の導体線、第２補助線によって間隔が均等な１つの格子形状を形成されている。   A conductor line of the first electrode, comprising: a first auxiliary line formed between the first electrodes on the one surface; and a second auxiliary line formed between the second electrodes on the other surface. The first auxiliary line, the conductor line of the second electrode, and the second auxiliary line form a single lattice shape with uniform spacing.

前記基板の一面に形成された第１電極の導体線、第１補助線、またはその両方は、基板の他面に形成された第２電極の導体線、第２補助線、またはその両方とで１本の線状を形成されている。   The first electrode conductor line, the first auxiliary line, or both formed on one surface of the substrate is the second electrode conductor line, the second auxiliary line, or both formed on the other surface of the substrate. One line is formed.

また、他のタッチパネルは、第１基板と、前記第１基板と対向する第２基板と、前記第１基板において、第２基板との対向面に形成され、一定間隔で並べられた複数の第１電極と、前記第２基板において、第１基板との反対面に形成され、一定間隔で並べられ、前記複数の泰１電極とで格子状になる複数の第２電極とを備える。   In addition, the other touch panel includes a first substrate, a second substrate facing the first substrate, and a plurality of first touch panels formed on the surface facing the second substrate in the first substrate and arranged at regular intervals. One electrode and a plurality of second electrodes formed on a surface opposite to the first substrate in the second substrate, arranged at regular intervals, and in a lattice form with the plurality of first electrodes.

本発明のタッチパネルは、上記のタッチパネルにおいて、第１電極と第２電極がそれぞれ複数の導体線によって網目を形成しており、導体線の方向がディスプレイのブラックマトリクスに対して斜め方向である。   In the touch panel of the present invention, in the touch panel described above, the first electrode and the second electrode each form a mesh with a plurality of conductor lines, and the direction of the conductor lines is oblique to the black matrix of the display.

前記第１基板における対向面において、第１電極同士の間に形成された第１補助線と、
前記第２基板における反対面において、第２電極同士の間に形成された第２補助線と、
を備え、前記第１電極の導体線、第１補助線、第２電極の導体線、第２補助線によって間隔が均等な１つの格子形状を形成されている。 A first auxiliary line formed between the first electrodes on the opposing surface of the first substrate;
A second auxiliary line formed between the second electrodes on the opposite surface of the second substrate;
The first electrode conductor line, the first auxiliary line, the second electrode conductor line, and the second auxiliary line form a single lattice shape with uniform spacing.

前記第１基板に形成された第１電極の導体線、第１補助線、またはその両方は、第２基板に形成された第２電極の導体線、第２補助線、またはその両方とで１本の線状を形成されている。 The conductor line of the first electrode formed on the first substrate, the first auxiliary line, or both are 1 in the conductor line of the second electrode formed on the second substrate, the second auxiliary line, or both. A line of books is formed.

本発明は、第１電極間に第１補助線、第２電極間に第２補助線を設けたことにより、電極と補助線によって格子形状が形成される。格子形状はブラックマトリクスに対して傾斜しおり、モアレが発生しにくい。さらに、一面ずつに格子形状が形成されているのではないため、モアレが発生しにくい。また、格子形状の間隔を等間隔にすることにより、タッチパネルでモアレの発現を防止できる。以上のように、複数のモアレが発生しにくい構造を採用している。また、電極が網目状であるため、一部に断線箇所が生じても電極全体に信号を印加することができ、製造歩留まりの悪化を防ぐことができる。   In the present invention, the first auxiliary line is provided between the first electrodes, and the second auxiliary line is provided between the second electrodes, whereby a lattice shape is formed by the electrodes and the auxiliary lines. The lattice shape is inclined with respect to the black matrix, and moiré is unlikely to occur. Furthermore, since the lattice shape is not formed on each surface, moire is unlikely to occur. In addition, by making the lattice-shaped intervals equal, it is possible to prevent the occurrence of moire on the touch panel. As described above, a structure in which a plurality of moiré is less likely to occur is employed. In addition, since the electrode has a mesh shape, a signal can be applied to the entire electrode even if a part of the disconnection occurs, and a deterioration in manufacturing yield can be prevented.

本発明のタッチパネルについて図面を用いて説明する。タッチパネルは、ディスプレイの前面に取り付けられる静電容量式のタッチパネルである。ディスプレイには、縦横に格子状となったブラックマトリクスが形成されている。   The touch panel of the present invention will be described with reference to the drawings. The touch panel is a capacitive touch panel attached to the front surface of the display. The display is formed with a black matrix having a grid pattern in the vertical and horizontal directions.

図１に示すタッチパネル１０は、基板１２、基板１２の一面に形成された第１電極１４と、基板１２の他面に形成された第２電極１６とを備える。説明において、基板１２の一面が上方、基板１２の他面が下方になり、基板１２の他面がディスプレイ１８に取り付けられる側の面とする。   A touch panel 10 shown in FIG. 1 includes a substrate 12, a first electrode 14 formed on one surface of the substrate 12, and a second electrode 16 formed on the other surface of the substrate 12. In the description, it is assumed that one surface of the substrate 12 is upward, the other surface of the substrate 12 is downward, and the other surface of the substrate 12 is a surface to be attached to the display 18.

基板１２は誘電体基板である。基板１２の材料は、ガラス、ポリエステル、ポリエチレンテレフタレート、ポリカーボネート、ポリメチルメタクリレート、ポリエチレンナフタレートなどの透明材料が挙げられる。ガラスであれば厚みは約０．１〜２ｍｍであり、プラスチックフィルムであれば厚みは約１０〜２０００μｍである。   The substrate 12 is a dielectric substrate. Examples of the material of the substrate 12 include transparent materials such as glass, polyester, polyethylene terephthalate, polycarbonate, polymethyl methacrylate, and polyethylene naphthalate. In the case of glass, the thickness is about 0.1 to 2 mm, and in the case of a plastic film, the thickness is about 10 to 2000 μm.

図２に示すように、第１電極１４と第２電極１６は、それぞれ一定間隔で並べられる。第１電極１４と第２電極１６は互いに直交する方向を向いており、図３に示すように第１電極１４と第２電極１６とで格子状になる。   As shown in FIG. 2, the first electrode 14 and the second electrode 16 are arranged at regular intervals. The first electrode 14 and the second electrode 16 are oriented in directions orthogonal to each other, and the first electrode 14 and the second electrode 16 form a lattice shape as shown in FIG.

第１電極１４と第２電極１６は、それぞれ複数の導体線を有し、導体線によって網目が形成されている。導体線は、長線２０ａ，２０ｂとその長線２０ａ，２０ｂと交差する複数の短線２２ａ，２２ｂである。長線２０ａ，２０ｂと短線２２ａ，２２ｂはそれぞれ、ディスプレイ１８のブラックマトリクスに対して斜め方向を向いている。これは、導体線とブラックマトリクスが同方向を向いていると、モアレが発生しやすいためである。   The first electrode 14 and the second electrode 16 each have a plurality of conductor lines, and a mesh is formed by the conductor lines. The conductor lines are the long lines 20a and 20b and a plurality of short lines 22a and 22b intersecting the long lines 20a and 20b. The long lines 20a and 20b and the short lines 22a and 22b are directed obliquely with respect to the black matrix of the display 18, respectively. This is because moire tends to occur when the conductor lines and the black matrix are oriented in the same direction.

長線２０ａ，２０ｂは一定の長さごとに蛇行し、蛇行した箇所の各角度は同じである。この蛇行時の角度は、ディスプレイ１８の縦軸または横軸に対してモアレが発生しない角度（バイアス角）である。第１電極１４の長線２２ａと第２電極１６の短線２２ｂが同じ方向を向いており、第１電極１４の短線２２ａと第２電極１６の長線２０ｂが同じ方向を向いている。長線２０ａ，２０ｂと短線２２ａ，２２ｂの線幅は、例えば約１０〜３０μｍである。長線２０ａ，２０ｂのピッチは、約２００〜４００μｍである。線幅が非常に細く、線幅に対してピッチが十分あるため、電極１４，１６が目立つことはなく、ディスプレイ１８の表示品位を低下させにくい。   The long lines 20a and 20b meander at regular lengths, and the angles of the meandered portions are the same. The meandering angle is an angle (bias angle) at which moire does not occur with respect to the vertical axis or horizontal axis of the display 18. The long line 22a of the first electrode 14 and the short line 22b of the second electrode 16 face the same direction, and the short line 22a of the first electrode 14 and the long line 20b of the second electrode 16 face the same direction. The line widths of the long lines 20a and 20b and the short lines 22a and 22b are, for example, about 10 to 30 μm. The pitch of the long lines 20a and 20b is about 200 to 400 μm. Since the line width is very thin and the pitch is sufficient with respect to the line width, the electrodes 14 and 16 do not stand out and the display quality of the display 18 is unlikely to deteriorate.

なお、第１電極１４および第２電極１６によって、図４のような菱形が形成されている。本説明で格子状は、正方形ではなく菱形が形成された格子状である。長線２０ａ，２０ｂを蛇行させるときの角度は、ディスプレイ１８の大きさなどにより適宜選択する。蛇行させることにより、ブラックマトリクスと同方向に導体線が形成されない。このことにより、後述する第１補助線２４と第２補助線２６もブラックマトリクスに対して傾斜することとなる。   The first electrode 14 and the second electrode 16 form a rhombus as shown in FIG. In this description, the lattice shape is a lattice shape in which diamonds are formed instead of squares. The angle at which the long lines 20a and 20b meander are appropriately selected depending on the size of the display 18 and the like. By meandering, no conductor wire is formed in the same direction as the black matrix. As a result, a first auxiliary line 24 and a second auxiliary line 26 described later are also inclined with respect to the black matrix.

また、網目状にすることにより、１本の長線２０ａ，２０ｂまたは短線２２ａ，２２ｂが製造時に切断されても、他の長線２０ａ，２０ｂまたは短線２２ａ，２２ｂによって電気信号を印加することができ、製造歩留まりを下げることを防止できる。第１電極１４および第２電極１６を構成する電極の体積抵抗値は０．５×１０−５〜５×１０−５Ω・ｃｍであり、ＩＴＯよりも低い。また、電極１６ｘ及び１４ｙの端子間抵抗値が５ｋΩ以下、好ましくは1ｋΩ以下になるように、前記体積抵抗値、及び線幅、高さを調整する。 Moreover, even if one long line 20a, 20b or short line 22a, 22b is cut at the time of manufacturing by making it mesh-like, an electric signal can be applied by another long line 20a, 20b or short line 22a, 22b, Lowering the manufacturing yield can be prevented. The volume resistance value of the electrodes constituting the first electrode 14 and the second electrode 16 is 0.5 × 10 −5 to 5 × 10 −5 Ω · cm, which is lower than that of ITO. Further, the volume resistance value, the line width, and the height are adjusted so that the inter-terminal resistance value of the electrodes 16x and 14y is 5 kΩ or less, preferably 1 kΩ or less.

長線２０ａ，２０ｂ同士の間隔よりも短線２２ａ，２２ｂ同士の間隔の方が大きくなるようにする。そして、第１電極１４の短線２２ａ同士の間に第２電極１６が配置されるようにする。また、第２電極１６の短線２２ｂ同士の間に第１電極１４が配置されるようにする。第１電極１４の短線２２ａと第２電極１６の長線２０ｂとで、それらの導体線が等間隔に並ぶようにする。第１電極１４の長線２０ａと第２電極１６の短線２２ｂとで、それらの導体線が等間隔に並ぶようにする。第１電極１４の短線２２ａと第２電極１６とが重ならないことにより、モアレが発生しない。また、第２電極１６の短線２２ｂと第１電極とが重ならないことにより、モアレが発生しない。   The distance between the short lines 22a and 22b is made larger than the distance between the long lines 20a and 20b. The second electrode 16 is disposed between the short lines 22a of the first electrode 14. Further, the first electrode 14 is arranged between the short lines 22 b of the second electrode 16. The short wires 22a of the first electrode 14 and the long wires 20b of the second electrode 16 are arranged so that the conductor wires are arranged at equal intervals. The long wire 20a of the first electrode 14 and the short wire 22b of the second electrode 16 are arranged such that their conductor lines are arranged at equal intervals. Since the short wire 22a of the first electrode 14 and the second electrode 16 do not overlap, moire does not occur. Further, since the short line 22b of the second electrode 16 and the first electrode do not overlap, moire does not occur.

第１電極１４と第２電極１６は、導電性のナノ粒子を含むインクによって印刷形成されたものである。導電性のナノ粒子は銀、金、白金、パラジウム、銅、カーボン、またはそれらの混合物を含む。ナノ粒子の平均粒子径は２μｍ以下、好ましくは２００〜５００ｎｍであり、従来のミクロン粒子よりも粒子径が小さい。電極１４，１６の線幅が１００μｍ以下であっても、ナノ粒子の粒子径が電極１４，１６の線幅よりも十分に小さいため、導電性のある電極１４，１６を形成することができる。インクのバインダーとしては、ポリエステル樹脂などである。バインダーの使用量は、導電性ナノ粒子１００重量部に対して、１〜２０重量部、好ましくは３〜１０重量部である。インクの溶媒としては、導電性ナノ粒子を良好に分散するものが良く、また沸点が約１００〜３００℃の溶媒、例えば沸点が１１０℃のトルエンが挙げられる。溶媒の沸点が比較的低いため、インクを基板１２に印刷後、比較的低温で焼成することができ、基板１２に対する熱的負荷を小さくできる。インクは、ナノ粒子のために分散処理がなされている。電極１４，１６の材料として、希少元素であるインジウムを含むＩＴＯを使用していない。電極材料のコストを低減できる。   The first electrode 14 and the second electrode 16 are formed by printing with ink containing conductive nanoparticles. The conductive nanoparticles include silver, gold, platinum, palladium, copper, carbon, or mixtures thereof. The average particle size of the nanoparticles is 2 μm or less, preferably 200 to 500 nm, and the particle size is smaller than that of conventional micron particles. Even when the line width of the electrodes 14 and 16 is 100 μm or less, the particle diameter of the nanoparticles is sufficiently smaller than the line width of the electrodes 14 and 16, so that the conductive electrodes 14 and 16 can be formed. Examples of the ink binder include polyester resin. The usage-amount of a binder is 1-20 weight part with respect to 100 weight part of electroconductive nanoparticles, Preferably it is 3-10 weight part. As a solvent for the ink, those that disperse the conductive nanoparticles well are preferable, and a solvent having a boiling point of about 100 to 300 ° C., for example, toluene having a boiling point of 110 ° C. can be mentioned. Since the boiling point of the solvent is relatively low, the ink can be baked at a relatively low temperature after printing on the substrate 12, and the thermal load on the substrate 12 can be reduced. The ink is dispersed for the nanoparticles. As a material for the electrodes 14 and 16, ITO containing indium which is a rare element is not used. The cost of the electrode material can be reduced.

本発明は、複数の第１補助線２４と複数の第２補助線２６を設けている。第１補助線２４は基板１２の一面に形成され、第２補助線２６は基板１２の他面に形成される。第１補助線２４は、第１電極１４同士の間に形成され、第２補助線２６は、第２電極１６同士の間に形成される。第１補助線２４と第２補助線２６の材料は第１電極１４などと同じである。第１補助線２４と第２補助線２６は、第１電極１４や第２電極１６と接続されない。   In the present invention, a plurality of first auxiliary lines 24 and a plurality of second auxiliary lines 26 are provided. The first auxiliary line 24 is formed on one surface of the substrate 12, and the second auxiliary line 26 is formed on the other surface of the substrate 12. The first auxiliary line 24 is formed between the first electrodes 14, and the second auxiliary line 26 is formed between the second electrodes 16. The material of the first auxiliary line 24 and the second auxiliary line 26 is the same as that of the first electrode 14 and the like. The first auxiliary line 24 and the second auxiliary line 26 are not connected to the first electrode 14 or the second electrode 16.

図４に電極１４，１６および補助線２４，２６の拡大図を示す。白抜きの部分が基板１２の一面に形成される第１電極１４および第１補助線２４であり、黒塗りの部分が基板１２の他面に形成される第２電極１６および第２補助線２６である。第１補助線２４は第２電極１６の短線２２ｂと同方向を向いており、第２電極１６同士の間隔ｄ２と同じ長さである。また、第２補助線２６は第１電極１４の短線２０ａと同方向を向いており、第１電極１４同士の間隔ｄ１と同じ長さである。第１補助線２４と第２補助線２６は、それぞれの中心で交差する。   FIG. 4 shows an enlarged view of the electrodes 14 and 16 and the auxiliary lines 24 and 26. The white portion is the first electrode 14 and the first auxiliary line 24 formed on one surface of the substrate 12, and the black portion is the second electrode 16 and the second auxiliary line 26 formed on the other surface of the substrate 12. It is. The first auxiliary line 24 faces in the same direction as the short line 22b of the second electrode 16, and has the same length as the interval d2 between the second electrodes 16. The second auxiliary line 26 faces in the same direction as the short line 20a of the first electrode 14, and has the same length as the interval d1 between the first electrodes 14. The first auxiliary line 24 and the second auxiliary line 26 intersect at their centers.

タッチパネル１０を上方または下方から見た場合、第１補助線２４と第２電極１６の短線２２ｂとで１本の線状になる。第１補助線２４は一面に形成されており、第２電極１６の短線２２ｂは他面に形成されているために非接触であるが、見かけ上、線状になるように並べられている。また、第２補助線２６と第１電極１４の短線２２ａとについても同様に線状になるように並べられている。さらに、第１電極１４の長線２０ａ、第１補助線２４、第２電極１６の短線２２ｂが等間隔に並び、第２電極１６の長線２０ｂ、第２補助線２６、第１電極１４の短線２２ａが等間隔に並ぶ。等間隔に並ぶことにより、第１電極１４などで格子が形成できる。上記のように１本の線状であるが、蛇行し、電極１４，１６と共に格子形状が形成できるようになっている。２つの面に形成された第１電極１４や第２電極１６などによって１つの格子形状が形成されており、２つの格子形状が重ね合わされて１つの格子形状のように見えるものではない。２つの格子形状を重ね合わせる場合、少しでもずれるとモアレが発生するが、本発明であればモアレの発生が防げる。   When the touch panel 10 is viewed from above or below, the first auxiliary line 24 and the short line 22b of the second electrode 16 form a single line. The first auxiliary line 24 is formed on one surface, and the short line 22b of the second electrode 16 is formed on the other surface and is not in contact with the first electrode 24, but is arranged so as to be linear. Similarly, the second auxiliary line 26 and the short line 22a of the first electrode 14 are arranged in a linear shape. Further, the long line 20a of the first electrode 14, the first auxiliary line 24, and the short line 22b of the second electrode 16 are arranged at equal intervals, and the long line 20b of the second electrode 16, the second auxiliary line 26, and the short line 22a of the first electrode 14 are arranged. Are arranged at equal intervals. By arranging them at equal intervals, a lattice can be formed by the first electrode 14 or the like. Although it is a single line as described above, it is meandering so that a lattice shape can be formed together with the electrodes 14 and 16. One lattice shape is formed by the first electrode 14 and the second electrode 16 formed on the two surfaces, and the two lattice shapes are not superimposed and do not look like one lattice shape. When two lattice shapes are overlapped, moiré is generated if they are slightly shifted, but moiré can be prevented according to the present invention.

上記のように見かけ上の線を形成し、その線が等間隔に並ぶことにより、図３に示すようにタッチパネル１０に格子状の導体線が形成されている。第１電極１４などを重ね合わせたときに格子状になっており、従来の特許文献２とは異なる。第１電極１４などの位置が多少ずれたとしても少し形の変形した格子状となるだけであり、モアレは発生しにくくなっている。基板の両面に特許文献２の電極を配置することに比べて、製造歩留まりをよくすることができる。   By forming apparent lines as described above and arranging the lines at regular intervals, grid-like conductor lines are formed on the touch panel 10 as shown in FIG. When the first electrode 14 and the like are superposed, they are in a lattice shape, which is different from the conventional Patent Document 2. Even if the position of the first electrode 14 or the like is slightly deviated, it is only a slightly deformed lattice shape, and moire is less likely to occur. Compared with the arrangement of the electrodes of Patent Document 2 on both sides of the substrate, the manufacturing yield can be improved.

その他、基板１２の一面側にアクリル系の透明接着剤２８を使用してカバーフィルム３０を接着させる。第１電極１４および第１補助線２４をカバーフィルム３０によって保護する。カバーフィルム３０の代わりに、透明樹脂をコーティングしても良い。ディスプレイ１８の表面にアクリル系の透明接着剤３２を使用して基板１２の他面側を接着させる。電極１４，１６の端部に端子１４ｙ、１６ｘを備え、その端子１４ｙ、１６ｘから引き出し配線（図示せず）が接続される。引き出し配線は電極１４，１６への電圧印加やタッチ位置を検出する制御回路に接続される。電極１４，１６に所定の電圧を印加し、指がタッチパネル１０に近接されたときの電気的変化を検出することにより、タッチ位置を検出する。   In addition, the cover film 30 is adhered to one surface side of the substrate 12 using an acrylic transparent adhesive 28. The first electrode 14 and the first auxiliary line 24 are protected by the cover film 30. Instead of the cover film 30, a transparent resin may be coated. The other surface side of the substrate 12 is adhered to the surface of the display 18 using an acrylic transparent adhesive 32. Terminals 14y and 16x are provided at the ends of the electrodes 14 and 16, and lead wires (not shown) are connected from the terminals 14y and 16x. The lead-out wiring is connected to a control circuit that detects voltage application and touch position to the electrodes 14 and 16. The touch position is detected by applying a predetermined voltage to the electrodes 14 and 16 and detecting an electrical change when the finger is brought close to the touch panel 10.

タッチパネル１０の製造方法について説明する。（１）上述した基板１２およびインクを準備する。基板１２は、必要に応じて所望の形状にカットし、洗浄する。（２）基板１２の一面にインクを印刷することによって第１電極１４および第１補助線２４を形成する。（３）基板１２の他面にインクを印刷することによって第２電極１６および第２補助線２６を形成する。（４）基板１２の一面側にアクリル系の透明接着剤２８を塗布し、基板１２の一面側にカバーフィルム３０を接着させる。   A method for manufacturing the touch panel 10 will be described. (1) Prepare the above-described substrate 12 and ink. The substrate 12 is cut into a desired shape and washed as necessary. (2) The first electrode 14 and the first auxiliary line 24 are formed by printing ink on one surface of the substrate 12. (3) The second electrode 16 and the second auxiliary line 26 are formed by printing ink on the other surface of the substrate 12. (4) An acrylic transparent adhesive 28 is applied to one side of the substrate 12 and the cover film 30 is adhered to the one side of the substrate 12.

（２）、（３）の印刷はスクリーン印刷またはインクジェット印刷でおこなう。スクリーン印刷やインクジェット印刷をおこなっただけではインクの比抵抗が高く、導電性はない。印刷後、乾燥炉でインクを焼成させることにより導電性を有するようになる。ＩＴＯの製造に必要な真空成膜やエッチングは必要なく、非常に簡単に電極１４，１６を生成することができる。   The printing of (2) and (3) is performed by screen printing or ink jet printing. Just by screen printing or ink jet printing, the specific resistance of the ink is high and there is no electrical conductivity. After printing, the ink is made conductive by baking the ink in a drying oven. The vacuum film formation and etching necessary for the production of ITO are not required, and the electrodes 14 and 16 can be generated very easily.

また、電極１４，１６の端部から銀インクなどで引き出し配線を形成し、引き出し配線を介して電極１４，１６をタッチパネルの制御回路に接続する。引き出し配線の形成を電極と同じインクを使用してスクリーン印刷などでおこなえば、電極１４，１６の形成時に引き出し配線の形成をおこなうことができる。   Further, lead wires are formed from the ends of the electrodes 14 and 16 with silver ink or the like, and the electrodes 14 and 16 are connected to the control circuit of the touch panel via the lead wires. If the lead lines are formed by screen printing or the like using the same ink as the electrodes, the lead lines can be formed when the electrodes 14 and 16 are formed.

完成したタッチパネル１０は、アクリル系の透明接着剤３２などを使用してディスプレイ１８の前面に取り付けられる。必要に応じて基板１２やディスプレイ１８の角にアライメントマークを設け、位置合わせをおこなう。   The completed touch panel 10 is attached to the front surface of the display 18 using an acrylic transparent adhesive 32 or the like. If necessary, alignment marks are provided at corners of the substrate 12 and the display 18 to perform alignment.

次に、他のタッチパネルについて説明する。先に説明したタッチパネルと同じ構成の箇所は説明を省略する場合がある。   Next, another touch panel will be described. The description of the same configuration as the touch panel described above may be omitted.

図５に示すタッチパネル１０ｂは、第１基板１２ａと、第１基板１２ａに対向する第２基板１２ｂと、第１基板１２ａの一面に形成された複数の第１電極１４と、第２基板１２ｂの一面に形成された複数の第２電極１６を備える。第１基板１２ａの一面と第２基板１２ｂの他面が対向する。第２基板１２ｂの一面がディスプレイ１８に取り付けられる面である。第１電極１４と第２電極１６は図２〜図４と同様であり、長線２０ａ，２０ｂと短線２２ａ，２２ｂとで構成された網目状の電極である。基板１２ａ，１２ｂおよび電極１４，１６の材料は先のタッチパネル１０と同様である。   A touch panel 10b shown in FIG. 5 includes a first substrate 12a, a second substrate 12b facing the first substrate 12a, a plurality of first electrodes 14 formed on one surface of the first substrate 12a, and a second substrate 12b. A plurality of second electrodes 16 formed on one surface are provided. One surface of the first substrate 12a faces the other surface of the second substrate 12b. One surface of the second substrate 12 b is a surface attached to the display 18. The 1st electrode 14 and the 2nd electrode 16 are the same as that of FIGS. 2-4, and are the mesh-like electrodes comprised by long line 20a, 20b and short line 22a, 22b. The materials of the substrates 12a and 12b and the electrodes 14 and 16 are the same as those of the touch panel 10 described above.

第１補助線２４は第１基板１２ａの一面に形成され、第２補助線２６は第２基板１２ｂの一面に形成される。第１補助線２４は、第１電極１４同士の間に形成され、第２補助線２６は、第２電極１６同士の間に形成される。第１補助線２４は第２電極１６の短線２２ｂと同方向を向いており、第２電極１６同士の間隔ｄ２と同じ長さである。また、第２補助線２６は第１電極１４の短線２２ａと同方向を向いており、第１電極１４同士の間隔ｄ１と同じ長さである。第１補助線２４および第２補助線２６の材料は第１電極１４などと同じである。   The first auxiliary line 24 is formed on one surface of the first substrate 12a, and the second auxiliary line 26 is formed on one surface of the second substrate 12b. The first auxiliary line 24 is formed between the first electrodes 14, and the second auxiliary line 26 is formed between the second electrodes 16. The first auxiliary line 24 faces in the same direction as the short line 22b of the second electrode 16, and has the same length as the interval d2 between the second electrodes 16. The second auxiliary line 26 faces the same direction as the short line 22a of the first electrode 14, and has the same length as the interval d1 between the first electrodes 14. The material of the first auxiliary line 24 and the second auxiliary line 26 is the same as that of the first electrode 14 and the like.

先のタッチパネル１０と同様に、第１補助線２４と第２電極１６の短線２２ｂとが１本の線状になる。それらは互いに非接触であるが、見かけ上、線状となる。また、第２補助線２６と第１電極１４の短線２０ａとについても同様に１本の線状になる。   Similar to the previous touch panel 10, the first auxiliary line 24 and the short line 22 b of the second electrode 16 form a single line. They are non-contact with each other, but are apparently linear. Similarly, the second auxiliary line 26 and the short line 20a of the first electrode 14 have a single line shape.

図５に示すように、第１基板１２ａと第２基板１２ｂとは透明のアクリル系の透明接着剤３４などを利用して接着される。第２基板１２ｂと第２電極１６とが透明のアクリル系の透明接着剤３６などを利用してディスプレイ１８に接着される。   As shown in FIG. 5, the first substrate 12a and the second substrate 12b are bonded using a transparent acrylic transparent adhesive 34 or the like. The second substrate 12b and the second electrode 16 are bonded to the display 18 using a transparent acrylic transparent adhesive 36 or the like.

その他、電極１４，１６の端子１４ｙ、１６ｘに引き出し配線（図示せず）を接続する。引き出し配線は電極１４，１６への電圧印加やタッチ位置を検出する制御回路に接続される。電極１４，１６に所定の電圧を印加し、指がタッチパネル１０ｂに近接されたときの電気的変化を検出することにより、タッチ位置を検出する。   In addition, lead wires (not shown) are connected to the terminals 14 y and 16 x of the electrodes 14 and 16. The lead-out wiring is connected to a control circuit that detects voltage application and touch position to the electrodes 14 and 16. A touch position is detected by applying a predetermined voltage to the electrodes 14 and 16 and detecting an electrical change when the finger is brought close to the touch panel 10b.

タッチパネル１０ｂの製造方法について説明する。（１）上述した基板１２ａ，１２ｂおよびインクを準備する。基板１２ａ，１２ｂは、必要に応じて所望の形状にカットし、洗浄する。（２）第１基板１２ａの一面にインクを印刷することによって第１電極１４および第１補助線２４を形成する。（３）第２基板１２ｂの一面にインクを印刷することによって第２電極１６および第２補助線２６を形成する。（４）第１基板１２ａの一面側に第２基板１２ｂの他面側が配置されるように第１基板１２ａと第２基板１２ｂとをアクリル系の透明接着剤３４で接着させる。   A method for manufacturing the touch panel 10b will be described. (1) Prepare the above-described substrates 12a and 12b and ink. The substrates 12a and 12b are cut into a desired shape and washed as necessary. (2) The first electrode 14 and the first auxiliary line 24 are formed by printing ink on one surface of the first substrate 12a. (3) The second electrode 16 and the second auxiliary line 26 are formed by printing ink on one surface of the second substrate 12b. (4) The first substrate 12a and the second substrate 12b are bonded with an acrylic transparent adhesive 34 so that the other surface side of the second substrate 12b is disposed on the one surface side of the first substrate 12a.

（２）、（３）の印刷はスクリーン印刷またはインクジェット印刷でおこなう。非常に簡単に印刷をすることができる。印刷後、乾燥炉でインクを焼成させることにより導電性を有するようになる。完成したタッチパネル１０ｂは、アクリル系の透明接着剤３６などを使用してディスプレイ１８の前面に取り付けられる。   The printing of (2) and (3) is performed by screen printing or ink jet printing. It is very easy to print. After printing, the ink is made conductive by baking the ink in a drying oven. The completed touch panel 10b is attached to the front surface of the display 18 using an acrylic transparent adhesive 36 or the like.

以上のように、本発明のタッチパネル１０，１０ｂは電極１４，１６間に補助線２４，２６を形成している。これらの電極１４などで間隔が均等な格子形状が形成され、モアレが発現しにくくなる。また、特許文献２のような一面だけ格子状の電極を形成しているのではなく、基板の両面で格子状になるようにしている。電極１４などの位置精度が低くなってもモアレが発現しにくく、製造歩留まりを良くすることができる。   As described above, the touch panels 10 and 10b of the present invention form the auxiliary lines 24 and 26 between the electrodes 14 and 16. A lattice shape with a uniform interval is formed by these electrodes 14 and the like, and moire is less likely to appear. In addition, a grid-like electrode is not formed on only one surface as in Patent Document 2, but a grid is formed on both sides of the substrate. Even if the positional accuracy of the electrode 14 or the like is lowered, moire is hardly expressed, and the manufacturing yield can be improved.

以上、本発明の実施形態について説明したが、本発明の実施形態は上記の実施形態に限定されるものではない。例えば、ディスプレイ１８を第１基板と見なしてディスプレイ１８の表面に第１電極１４および第１補助線２４を形成しても良い（図６）。第２基板１２ｃの一面に第２電極１６および第２補助線２６を形成し、アクリル系の透明接着剤３８によって第２基板１２ｃの他面をディスプレイ１８に接着する。アクリル系の透明接着剤２８によってカバーフィルム３０を第２基板１２ｃの一面に接着し、第２電極１６および第２補助線２６を保護する。第１電極１４、第１補助線２４、第２電極１６、第２補助線２６、第２基板１２ｃなどは上記の実施形態と同様の構成である。   As mentioned above, although embodiment of this invention was described, embodiment of this invention is not limited to said embodiment. For example, the display 18 may be regarded as a first substrate, and the first electrode 14 and the first auxiliary line 24 may be formed on the surface of the display 18 (FIG. 6). The second electrode 16 and the second auxiliary line 26 are formed on one surface of the second substrate 12 c, and the other surface of the second substrate 12 c is bonded to the display 18 with an acrylic transparent adhesive 38. The cover film 30 is bonded to one surface of the second substrate 12c with an acrylic transparent adhesive 28 to protect the second electrode 16 and the second auxiliary line 26. The first electrode 14, the first auxiliary line 24, the second electrode 16, the second auxiliary line 26, the second substrate 12c, and the like have the same configuration as in the above embodiment.

図７（ａ）、（ｂ）に示すような、複数の網目形状をつなぎ合わせた第１電極１４ｂ、第２電極１６ｂであってもよい。第１電極１４ｂと第２電極１６ｂは等間隔で並べられている。第１電極同士の間に第１電極１４ｂに接続された第１補助線２４ｂが設けられている。第２電極同士の間に第２電極１６ｂに接続された第２補助線２６ｂが設けられている。図１の基板１２の一面と他面、または図５の第１基板１２ａと第２基板１２ｂとに、第１電極１４ｂや第２電極１６ｂなどが設けられる。上記と同じように重ね合わされると、図８のように格子形状が形成される。図２と同様に、第１電極１４ｂと第２電極１６ｂの端部に電極１６ｘ及び１４ｙ（図示せず）が直接または間接に接続される。図７と図８に示すように、１つの格子形状を形成し、格子形状を構成する線がブラックマトリクスに対して傾斜していれば、モアレが発生しにくくなる。   As shown in FIGS. 7A and 7B, a first electrode 14b and a second electrode 16b in which a plurality of mesh shapes are connected may be used. The first electrode 14b and the second electrode 16b are arranged at equal intervals. A first auxiliary line 24b connected to the first electrode 14b is provided between the first electrodes. A second auxiliary line 26b connected to the second electrode 16b is provided between the second electrodes. A first electrode 14b, a second electrode 16b, and the like are provided on one surface and the other surface of the substrate 12 of FIG. 1 or the first substrate 12a and the second substrate 12b of FIG. When superposed in the same manner as described above, a lattice shape is formed as shown in FIG. As in FIG. 2, electrodes 16x and 14y (not shown) are connected directly or indirectly to the ends of the first electrode 14b and the second electrode 16b. As shown in FIGS. 7 and 8, if one lattice shape is formed and the lines constituting the lattice shape are inclined with respect to the black matrix, moire is less likely to occur.

図８の場合、導体線や補助線はブラックマトリクスに対して４５度の傾斜を有することとなるが、ディスプレイによっては４５度でモアレが発現するため、実際に使用するディスプレイに合わせてモアレが発現しにくい傾斜角に調整する。   In the case of FIG. 8, the conductor lines and the auxiliary lines have an inclination of 45 degrees with respect to the black matrix. However, moire appears at 45 degrees depending on the display. Adjust the tilt angle to be difficult.

図２などで説明した電極１４、１６や補助線２４，２６の構造は一例であり、（１）導体線などがディスプレイのブラックマトリクスに対して傾斜すること、（２）１枚の基板１２の両面、または２枚の基板１２ａ，１２ｂに形成された導体線などによって、間に基板１２を介して１つの格子形状が形成されること、（３）１つの格子形状を形成する際に導体線などが交差することがあっても重なり合うことがないことが重要である。   The structure of the electrodes 14 and 16 and the auxiliary lines 24 and 26 described with reference to FIG. 2 is an example. (1) The conductor lines are inclined with respect to the black matrix of the display. One grid shape is formed via the substrate 12 between the two sides or the conductor wires formed on the two substrates 12a and 12b, and (3) a conductor wire when forming one grid shape. It is important that they do not overlap even if they intersect.

本発明の効果を確認するために、図９に示す電極ｅをＩＴＯおよび網目状の銀電極で形成した。電極ｅの幅は３ｍｍ、長さは３０ｃｍである。ＩＴＯの場合、電極ｅのパターン間抵抗は約３０ｋΩであり、銀電極の場合は約５２Ωであった。上から７番目の電極ｅにおいて感度の比較をおこなった。電極ｅの左端の端子ｙから所定の電圧を印加するようにして、静電容量の変化も端子ｙから検出した。端子ｙから０ｃｍのポイントＯでは、感度にほとんど差がない。端子ｙから１５ｃｍのポイントＰでは、網目状の銀電極に比べてＩＴＯの電極が１／３の感度になり、３０ｃｍのポイントＱでは１／５になった。網目状の銀電極はポイントＯ〜Ｑまで感度の変化が非常に小さかった。ＩＴＯの電極の場合、１５ｃｍや３０ｃｍのポイントＰ，Ｑでは、感度が非常に小さい。以上より、本発明のタッチパネルはＩＴＯ電極を用いた場合に比べ、容易に大型化が実現できる。   In order to confirm the effect of the present invention, the electrode e shown in FIG. 9 was formed of ITO and a net-like silver electrode. The electrode e has a width of 3 mm and a length of 30 cm. In the case of ITO, the inter-pattern resistance of the electrode e was about 30 kΩ, and in the case of the silver electrode, it was about 52Ω. The sensitivity of the seventh electrode e from the top was compared. A change in capacitance was also detected from the terminal y by applying a predetermined voltage from the terminal y at the left end of the electrode e. At the point O of 0 cm from the terminal y, there is almost no difference in sensitivity. At the point P of 15 cm from the terminal y, the sensitivity of the ITO electrode was 1/3 compared to the mesh silver electrode, and at the point Q of 30 cm, the sensitivity was 1/5. The change in sensitivity of the mesh-like silver electrode was very small from point O to Q. In the case of an ITO electrode, the sensitivity is very small at the points P and Q of 15 cm and 30 cm. As described above, the touch panel of the present invention can be easily increased in size as compared with the case where the ITO electrode is used.

本発明は、その主旨を逸脱しない範囲で当業者の知識に基づき種々の改良、修正、変更を加えた態様で実施できるものである。   The present invention can be implemented in variously modified, modified, and modified forms based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

タッチパネルの一部断面を示す図である。It is a figure which shows the partial cross section of a touchscreen. タッチパネルの電極および補助線を示す図であり、（ａ）は第１電極および第１補助線を示し、（ｂ）は第２電極および第２補助線を示す。It is a figure which shows the electrode and auxiliary line of a touchscreen, (a) shows a 1st electrode and a 1st auxiliary line, (b) shows a 2nd electrode and a 2nd auxiliary line. 第１電極、第１補助線、第２電極、および第２補助線の位置関係を示す図である。It is a figure which shows the positional relationship of a 1st electrode, a 1st auxiliary line, a 2nd electrode, and a 2nd auxiliary line. 図３の一部拡大図である。FIG. 4 is a partially enlarged view of FIG. 3. タッチパネルの一部断面を示す図である。It is a figure which shows the partial cross section of a touchscreen. タッチパネルの一部断面を示す図である。It is a figure which shows the partial cross section of a touchscreen. タッチパネルの電極および補助線を示す図であり、（ａ）は第１電極および第１補助線を示し、（ｂ）は第２電極および第２補助線を示す。It is a figure which shows the electrode and auxiliary line of a touchscreen, (a) shows a 1st electrode and a 1st auxiliary line, (b) shows a 2nd electrode and a 2nd auxiliary line. 図７における第１電極、第１補助線、第２電極、および第２補助線の位置関係を示す図である。It is a figure which shows the positional relationship of the 1st electrode, 1st auxiliary line, 2nd electrode, and 2nd auxiliary line in FIG. 網目状の電極とＩＴＯの電極との比較をおこなうために使用した電極を示す図である。It is a figure which shows the electrode used in order to perform a comparison with the electrode of a mesh shape, and the electrode of ITO. 従来のタッチパネルを示す図であり、（ａ）は正面図であり、（ｂ）は（ａ）のＸ−Ｘ線断面図である。It is a figure which shows the conventional touch panel, (a) is a front view, (b) is XX sectional drawing of (a).

符号の説明Explanation of symbols

１０，１０ｂ．１０ｃ：タッチパネル
１２，１２ａ，１２ｂ，１２ｃ：基板
１４，１４ｂ，１６，１６ｂ：電極
１８：ディスプレイ
２０ａ，２０ｂ：長線（導体線）
２２ａ，２２ｂ：短線（導体線）
２４，２４ｂ，２６，２６ｂ：補助線
２８，３２，３４，３６，３８：アクリル系の透明接着剤
３０：カバーフィルム 10, 10b. 10c: Touch panel 12, 12a, 12b, 12c: Substrate 14, 14b, 16, 16b: Electrode 18: Display 20a, 20b: Long wire (conductor wire)
22a, 22b: short wire (conductor wire)
24, 24b, 26, 26b: auxiliary lines 28, 32, 34, 36, 38: acrylic transparent adhesive 30: cover film

Claims (6)

基板と、
前記基板の一面に形成され、一定間隔で並べられた複数の第１電極と、
前記基板の他面に形成され、一定間隔で並べられ、前記複数の第１電極とで格子状になる複数の第２電極と、
を備え、ディスプレイの前面に取り付けられるタッチパネルであって、
前記第１電極と第２電極がそれぞれ複数の導体線によって網目を形成しており、導体線の方向がディスプレイのブラックマトリクスに対して斜め方向であるタッチパネル。 A substrate,
A plurality of first electrodes formed on one surface of the substrate and arranged at regular intervals;
A plurality of second electrodes formed on the other surface of the substrate, arranged at regular intervals, and in a lattice form with the plurality of first electrodes;
A touch panel attached to the front of the display,
The touch panel in which the first electrode and the second electrode each form a mesh with a plurality of conductor lines, and the direction of the conductor lines is oblique to the black matrix of the display. 前記一面において、第１電極同士の間に形成された第１補助線と、
前記他面において、第２電極同士の間に形成された第２補助線と、
を備え、
前記第１電極の導体線、第１補助線、第２電極の導体線、第２補助線によって線の間隔が均等な１つの格子形状を形成した請求項１のタッチパネル。 A first auxiliary line formed between the first electrodes on the one surface;
A second auxiliary line formed between the second electrodes on the other surface;
With
The touch panel as set forth in claim 1, wherein the first electrode conductor line, the first auxiliary line, the second electrode conductor line, and the second auxiliary line form a single lattice shape with equal line spacing. 前記基板の一面に形成された第１電極の導体線、第１補助線、またはその両方は、基板の他面に形成された第２電極の導体線、第２補助線、またはその両方とで１本の線状を形成した請求項２のタッチパネル。 The first electrode conductor line, the first auxiliary line, or both formed on one surface of the substrate is the second electrode conductor line, the second auxiliary line, or both formed on the other surface of the substrate. The touch panel according to claim 2, wherein one line is formed. 第１基板と、
前記第１基板と対向する第２基板と、
前記第１基板において、第２基板との対向面に形成され、一定間隔で並べられた複数の第１電極と、
前記第２基板において、第１基板との反対面に形成され、一定間隔で並べられ、前記複数の泰１電極とで格子状になる複数の第２電極と、
を備えるタッチパネルであって、
前記第１電極と第２電極がそれぞれ複数の導体線によって網目を形成しており、導体線の方向がディスプレイのブラックマトリクスに対して斜め方向であるタッチパネル。 A first substrate;
A second substrate facing the first substrate;
A plurality of first electrodes formed on a surface facing the second substrate and arranged at regular intervals in the first substrate;
A plurality of second electrodes formed on a surface opposite to the first substrate in the second substrate, arranged at regular intervals, and in a lattice shape with the plurality of first electrodes;
A touch panel comprising:
The touch panel in which the first electrode and the second electrode each form a mesh with a plurality of conductor lines, and the direction of the conductor lines is oblique to the black matrix of the display. 前記第１基板における対向面において、第１電極同士の間に形成された第１補助線と、
前記第２基板における反対面において、第２電極同士の間に形成された第２補助線と、
を備え、
前記第１電極の導体線、第１補助線、第２電極の導体線、第２補助線によって線の間隔が均等な１つの格子形状を形成した請求項４のタッチパネル。 A first auxiliary line formed between the first electrodes on the opposing surface of the first substrate;
A second auxiliary line formed between the second electrodes on the opposite surface of the second substrate;
With
The touch panel according to claim 4, wherein the first electrode conductor line, the first auxiliary line, the second electrode conductor line, and the second auxiliary line form a single lattice shape with equal line spacing. 前記第１基板に形成された第１電極の導体線、第１補助線、またはその両方は、第２基板に形成された第２電極の導体線、第２補助線、またはその両方とで１本の線状を形成した請求項５のタッチパネル。 The conductor line of the first electrode formed on the first substrate, the first auxiliary line, or both are 1 in the conductor line of the second electrode formed on the second substrate, the second auxiliary line, or both. The touch panel according to claim 5, wherein a linear line is formed.
JP2008198419A 2008-07-31 2008-07-31 Touch panel Expired - Fee Related JP5174575B2 (en)

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JP2008198419A JP5174575B2 (en) 2008-07-31 2008-07-31 Touch panel
EP12004387A EP2511806A3 (en) 2008-07-31 2009-07-27 Capacitive touch switch
PCT/JP2009/063355 WO2010013679A1 (en) 2008-07-31 2009-07-27 Planar element, and touch switch
CN200980130592.6A CN102112949B (en) 2008-07-31 2009-07-27 Planar element, and touch switch
KR1020117004585A KR101329638B1 (en) 2008-07-31 2009-07-27 Planar element, and touch switch
CN201410841804.4A CN104635983B (en) 2008-07-31 2009-07-27 Soft-touch control
EP09802922A EP2330488A4 (en) 2008-07-31 2009-07-27 Planar element, and touch switch
US13/000,634 US8717332B2 (en) 2008-07-31 2009-07-27 Planar element, and touch switch
TW098125703A TWI444862B (en) 2008-07-31 2009-07-30 Face and touch switch

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Cited By (97)

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