JP2011018194A - Sensor panel for large-size display - Google Patents

Sensor panel for large-size display Download PDF

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JP2011018194A
JP2011018194A JP2009162360A JP2009162360A JP2011018194A JP 2011018194 A JP2011018194 A JP 2011018194A JP 2009162360 A JP2009162360 A JP 2009162360A JP 2009162360 A JP2009162360 A JP 2009162360A JP 2011018194 A JP2011018194 A JP 2011018194A
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conductive pattern
sensor panel
layer
pattern layer
laminated
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JP5361579B2 (en
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Yusuke Kobayashi
佑輔 小林
Shoji Yamazaki
章司 山崎
Hiroto Komatsu
博登 小松
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Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
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Shin Etsu Chemical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a sensor panel for a large-size display, allowing increase of size of the display by reducing a resistance value of electroconductive pattern layers.SOLUTION: In the sensor panel for the large-size display, a pair of laminated sheets 1, 1A facing each other are adhered by a light-transmissive insulating adhesive layer 2. Each laminated layer 1, 1A is formed from an insulating transparent sheet 3 having optical transparency, and a plurality of electroconductive pattern layers 5 bonded to the opposite face of the transparent sheet 3 and to be bonded to the insulating adhesive layer 2. The plurality of electroconductive pattern layers 5 are arranged on the opposite face of the transparent sheet 3, and each electroconductive pattern layer 5 has a metal mesh structure. Because using the electroconductive pattern layers 5 each of the metal mesh structure having a low resistance value, the resistance value of each electroconductive pattern layer 5 is reduced even if the size of the display increases to contribute to the increase of the size of the display.

Description

本発明は、インターネットやメール等の入力操作を可能にする大型ディスプレイ用のセンサパネルに関するものである。   The present invention relates to a sensor panel for a large display that enables input operations such as the Internet and mail.

近年、ディスプレイにタッチパネル機能を付与し、タッチ操作で欲しい情報を簡単に入手可能なモニターが開発・製造されてきている。この種のモニターは、図示しないが、絶縁性の透明シートと、この透明シートの表面に形成される導電パターン層とを備え、透明シートが光透過性を有するポリエチレンテレフタレートにより形成され、導電パターン層が透明のＩＴＯ膜により形成されており、指のタッチ操作に伴う静電容量の変化により所定の機能を実現する（特許文献１、２参照）。   In recent years, monitors have been developed and manufactured that give a touch panel function to a display and can easily obtain information desired by a touch operation. Although not shown, this type of monitor includes an insulating transparent sheet and a conductive pattern layer formed on the surface of the transparent sheet, and the transparent sheet is formed of light-transmitting polyethylene terephthalate. Is formed of a transparent ITO film, and realizes a predetermined function by a change in capacitance accompanying a finger touch operation (see Patent Documents 1 and 2).

特開２００８−１４０３２７号公報JP 2008-140327 A 特開平８−８３６７４号公報JP-A-8-83684

従来におけるモニターは以上のように構成され、導電パターン層がＩＴＯ膜により単に形成されているので、モニターが大型化する（例えば、３０インチ以上の大きさ）と、導電パターン層の抵抗値の増大（例えば、１０ｋΩ程度）を招き、この結果、モニターの大型化を図ることが困難になるという問題がある。   The conventional monitor is configured as described above, and the conductive pattern layer is simply formed of the ITO film. Therefore, when the monitor is enlarged (for example, 30 inches or more), the resistance value of the conductive pattern layer increases. (For example, about 10 kΩ) is invited, and as a result, it is difficult to increase the size of the monitor.

本発明は上記に鑑みなされたもので、導電パターン層の抵抗値を低減してディスプレイの大型化を可能とする大型ディスプレイ用のセンサパネルを提供することを目的としている。   The present invention has been made in view of the above, and an object of the present invention is to provide a sensor panel for a large display that can reduce the resistance value of a conductive pattern layer and can increase the size of the display.

本発明においては上記課題を解決するため、対向する一対の積層シートを光透過性の絶縁性接着層を介して接着したものであって、
積層シートは、絶縁性の透明シートと、この透明シートの対向面に配列形成されて絶縁性接着層に接着する複数の導電パターン層とを含み、この導電パターン層を金属製のメッシュ構造としたことを特徴としている。 In the present invention, in order to solve the above problems, a pair of opposed laminated sheets are bonded via a light-transmitting insulating adhesive layer,
The laminated sheet includes an insulating transparent sheet and a plurality of conductive pattern layers that are arranged on the opposite surface of the transparent sheet and adhere to the insulating adhesive layer, and the conductive pattern layer has a metal mesh structure. It is characterized by that.

なお、絶縁性接着層に、絶縁性を有する透明のスペーサ粒子を含有することができる。
また、一対の積層シートのうち、一の積層シートの複数の導電パターン層をＸ方向に向けるとともに、他の積層シートの複数の導電パターン層をＹ方向に向け、各導電パターン層を、平面略菱形の電極が一列に並んだダイヤモンドパターンに形成することができる。
さらに、導電パターン層を、光透過性の基材に金属箔を積層し、この金属箔を部分的に除去して複数の金属細線のメッシュ構造にすることで形成することができる。 Note that the insulating adhesive layer can contain transparent spacer particles having insulating properties.
Further, among the pair of laminated sheets, the plurality of conductive pattern layers of one laminated sheet are directed in the X direction, the plurality of conductive pattern layers of other laminated sheets are directed in the Y direction, and each conductive pattern layer is substantially planar. It can be formed in a diamond pattern in which rhombic electrodes are arranged in a line.
Furthermore, the conductive pattern layer can be formed by laminating a metal foil on a light-transmitting base material and partially removing the metal foil to form a mesh structure of a plurality of fine metal wires.

ここで、特許請求の範囲における対向する一対の積層シートは、同じ大きさでも良いし、異なる大きさでも良い。この積層シートには、可撓性を適宜付与することができる。積層シートを形成する透明シートの対向面には、複数の導電パターン層を透明の接着剤層により接着することができる。また、絶縁性接着層としては、透明の接着剤、粘着剤、両面粘着テープ等を用いることができる。   Here, the pair of opposed laminated sheets in the claims may have the same size or different sizes. Flexibility can be appropriately imparted to the laminated sheet. A plurality of conductive pattern layers can be bonded to the opposite surface of the transparent sheet forming the laminated sheet with a transparent adhesive layer. Moreover, as an insulating adhesive layer, a transparent adhesive, an adhesive, a double-sided adhesive tape, etc. can be used.

導電パターン層は、例えば直線や斜線、連続した山形や溝形のパターン、ダイヤモンドパターン等に適宜形成することが可能である。この導電パターン層の形成に際しては、透明シートに導電パターン層を印刷して形成するのではなく、透明の基材に金属箔を積層した後、この金属箔をエッチング処理して導電パターン層を形成するようにすれば、厚みのバラツキが少ない高精度の導電パターン層を得ることができる。   The conductive pattern layer can be appropriately formed in, for example, a straight line, a diagonal line, a continuous chevron or groove pattern, a diamond pattern, or the like. When forming this conductive pattern layer, instead of printing the conductive pattern layer on a transparent sheet, a metal foil is laminated on a transparent substrate, and then this metal foil is etched to form a conductive pattern layer. By doing so, a highly accurate conductive pattern layer with little thickness variation can be obtained.

本発明に係る大型ディスプレイ用のセンサパネルを製造する場合には、一対の透明シートの片面に複数の導電パターン層をそれぞれ配設して一対の積層シートを製造し、この一対の積層シートのいずれか一方の積層シートの対向面に絶縁性接着層用の接着剤等を設け、一の積層シートにおける複数の導電パターン層と他の積層シートにおける複数の導電パターン層とが交差するよう、一対の積層シートを重ねて接着すれば、大型ディスプレイ用のセンサパネルを製造することができる。   When producing a sensor panel for a large display according to the present invention, a plurality of conductive pattern layers are respectively disposed on one side of a pair of transparent sheets to produce a pair of laminated sheets. An adhesive for an insulating adhesive layer is provided on the opposite surface of one of the laminated sheets, and a pair of conductive pattern layers in one laminated sheet and a plurality of conductive pattern layers in the other laminated sheet intersect. If the laminated sheets are stacked and bonded, a sensor panel for a large display can be manufactured.

本発明によれば、抵抗値の低い金属製のメッシュ構造を有する導電パターン層を用いるので、例えディスプレイが大型化しても、導電パターン層の抵抗値を低減することができる。   According to the present invention, since the conductive pattern layer having a metal mesh structure having a low resistance value is used, the resistance value of the conductive pattern layer can be reduced even if the display is enlarged.

本発明によれば、透過性を維持しつつ、導電パターン層の抵抗値を低減することができる。したがって、ディスプレイの大型化を可能にすることができるという効果がある。   According to the present invention, it is possible to reduce the resistance value of the conductive pattern layer while maintaining transparency. Therefore, there is an effect that the display can be enlarged.

なお、絶縁性接着層に、絶縁性を有する透明のスペーサ粒子を含有すれば、一対の積層シートの間にスペーサ粒子が介在するので、対向する導電パターン層の接触に伴う損傷を防止することができる。
また、各導電パターン層を、平面略菱形の電極が一列に並んだダイヤモンドパターンに形成すれば、導電パターン層の重なり領域が少なく、センサパネルの光線の透過率を向上させることが可能になる。 In addition, if the insulating adhesive layer contains transparent spacer particles having insulating properties, the spacer particles are interposed between the pair of laminated sheets, so that it is possible to prevent damage due to contact between the opposing conductive pattern layers. it can.
Further, if each conductive pattern layer is formed in a diamond pattern in which substantially rhombic electrodes in a plane are arranged in a line, the overlapping area of the conductive pattern layers is small, and the light transmittance of the sensor panel can be improved.

さらに、導電パターン層を、光透過性の基材に金属箔を積層し、この金属箔を部分的に除去して複数の金属細線のメッシュ構造にすることで形成すれば、例え導電パターン層の一部が損傷しても、損傷の及んでいない金属細線により電気的な導通を確保することができ、センサパネルの操作に支障を来たすことが少ない。   Furthermore, if the conductive pattern layer is formed by laminating a metal foil on a light-transmitting substrate and partially removing the metal foil to form a mesh structure of a plurality of fine metal wires, for example, the conductive pattern layer Even if a part is damaged, electrical continuity can be ensured by a fine metal wire that is not damaged, and the operation of the sensor panel is hardly hindered.

本発明に係る大型ディスプレイ用のセンサパネルの実施形態を模式的に示す側面説明図である。It is side explanatory drawing which shows typically embodiment of the sensor panel for large sized displays which concerns on this invention. 本発明に係る大型ディスプレイ用のセンサパネルの実施形態における積層シートを模式的に示す斜視説明図である。It is a perspective explanatory view showing typically the lamination sheet in the embodiment of the sensor panel for large-sized displays concerning the present invention. 本発明に係る大型ディスプレイ用のセンサパネルの実施形態における他の積層シートを模式的に示す斜視説明図である。It is a perspective explanatory view showing typically the other lamination sheet in the embodiment of the sensor panel for large displays concerning the present invention. 本発明に係る大型ディスプレイ用のセンサパネルの実施形態における導電パターン層を模式的に示す斜視説明図である。It is a perspective explanatory view showing typically a conductive pattern layer in an embodiment of a sensor panel for a large display according to the present invention. 本発明に係る大型ディスプレイ用のセンサパネルの第２の実施形態を模式的に示す部分断面説明図である。It is a fragmentary sectional view showing typically a 2nd embodiment of a sensor panel for large displays concerning the present invention. 本発明に係る大型ディスプレイ用のセンサパネルの第３の実施形態における導電パターン層とその金属細線を模式的に示す拡大説明図である。It is an expansion explanatory view showing typically the conductive pattern layer in the 3rd embodiment of the sensor panel for large-sized displays concerning the present invention, and its metal fine line. 本発明に係る大型ディスプレイ用のセンサパネルの第３の実施形態における積層シートの複数の導電パターン層を模式的に示す平面説明図である。It is a plane explanatory view showing typically a plurality of conductive pattern layers of a lamination sheet in a 3rd embodiment of a sensor panel for large displays concerning the present invention. 本発明に係る大型ディスプレイ用のセンサパネルの第３の実施形態における他の積層シートの複数の導電パターン層を模式的に示す平面説明図である。It is plane explanatory drawing which shows typically the some conductive pattern layer of the other laminated sheet in 3rd Embodiment of the sensor panel for large sized displays which concerns on this invention.

以下、図面を参照して本発明の実施形態を説明すると、本実施形態における大型ディスプレイ用のセンサパネルは、図１ないし図４に示すように、一対の積層シート１・１Ａを絶縁性接着層２により接着したセンサパネルで、各積層シート１・１Ａを、透明シート３に、絶縁性接着層２に接着する複数の導電パターン層５を配列することで形成し、各導電パターン層５を金属製のメッシュ構造としており、導電体である指のタッチ操作に伴う静電容量の変化により所定の機能を実現する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, a sensor panel for a large display according to the present embodiment includes a pair of laminated sheets 1 and 1A as an insulating adhesive layer. 2 is formed by arranging a plurality of conductive pattern layers 5 bonded to the insulating adhesive layer 2 on the transparent sheet 3 and arranging each conductive pattern layer 5 as a metal. The mesh structure is made of, and a predetermined function is realized by a change in capacitance accompanying a finger touch operation as a conductor.

一対の積層シート１・１Ａは、図１ないし図３に示すように、共に同じ大きさ・厚さに形成され、相対向して接着されており、この接着した状態で図示しない大型ディスプレイ、具体的にはプラズマディスプレイに設置される。この一対の積層シート１・１Ａは、図示しないコート層や保護ノイズ層が適宜積層され、積層シート１あるいは積層シート１Ａが指によりタッチ操作される。   As shown in FIGS. 1 to 3, the pair of laminated sheets 1 and 1A are both formed to have the same size and thickness, and are bonded to each other. It is installed in the plasma display. In the pair of laminated sheets 1 and 1A, a coat layer and a protective noise layer (not shown) are appropriately laminated, and the laminated sheet 1 or the laminated sheet 1A is touched with a finger.

絶縁性接着層２は、図１に示すように、例えば光透過性を有するアクリル系の接着剤やシリコーン系の粘着剤等からなり、一対の積層シート１・１Ａの接着時に一の積層シート１の対向面に薄くスクリーン印刷されたり、塗布されており、乾燥硬化後に１５μｍ程度の厚さに調整される。   As shown in FIG. 1, the insulating adhesive layer 2 is made of, for example, a light-transmitting acrylic adhesive or silicone-based adhesive, and one laminated sheet 1 at the time of bonding the pair of laminated sheets 1 and 1A. Is thinly screen-printed or coated on the opposite surface, and is adjusted to a thickness of about 15 μm after drying and curing.

各積層シート１・１Ａは、図１ないし図３に示すように、光透過性を有する絶縁性の透明シート３と、この透明シート３の他の透明シート３に対向する平坦な対向面に透明の接着剤層４を介し接着されて絶縁性接着層２に接着する複数の導電パターン層５とを備えた多層構造に形成される。   As shown in FIG. 1 to FIG. 3, each laminated sheet 1, 1 </ b> A is transparent on an insulating transparent sheet 3 having optical transparency and a flat opposing surface facing the other transparent sheet 3. And a plurality of conductive pattern layers 5 bonded to the insulating adhesive layer 2 through the adhesive layer 4.

透明シート３は、例えば光や熱に対して安定のポリエチレンテレフタレート（ＰＥＴ）やアクリル等の材料を使用して厚さ１２５μｍ程度の透明な平面矩形に形成され、可撓性等が選択的に付与されており、対向面に導電パターン層５用の接着剤層４が積層される。この接着剤層４は、絶縁性接着層２同様、光透過性を有するアクリル系の接着剤やシリコーン系の粘着剤等からなり、透明シート３の対向面に薄くスクリーン印刷されたり、塗布され、乾燥硬化後に１５μｍ程度の厚さとされる。   The transparent sheet 3 is formed into a transparent planar rectangle having a thickness of about 125 μm using, for example, a material such as polyethylene terephthalate (PET) or acrylic that is stable to light and heat, and flexibility is selectively imparted. The adhesive layer 4 for the conductive pattern layer 5 is laminated on the opposite surface. This adhesive layer 4 is made of a light-transmitting acrylic adhesive, silicone adhesive, etc., like the insulating adhesive layer 2, and is thinly screen-printed or applied to the opposite surface of the transparent sheet 3, The thickness is about 15 μm after drying and curing.

複数の導電パターン層５は、一対の積層シート１・１Ａのうち、一方の積層シート１に形成される場合にはＸ方向に向けられ、他方の積層シート１Ａに形成される場合にはＹ方向に向けられる。この複数の導電パターン層５は、透明シート３の対向面に所定の間隔をおき一列に配列されることで形成され、図示しないコントローラに電気的に接続されており、所定の電圧が均一に印加されることで均一の電界を形成する。   The plurality of conductive pattern layers 5 are oriented in the X direction when formed on one laminated sheet 1 out of the pair of laminated sheets 1 and 1A, and in the Y direction when formed on the other laminated sheet 1A. Directed to. The plurality of conductive pattern layers 5 are formed by being arranged in a line at a predetermined interval on the opposing surface of the transparent sheet 3, and are electrically connected to a controller (not shown) so that a predetermined voltage is uniformly applied. As a result, a uniform electric field is formed.

各導電パターン層５は、大型ディスプレイの視認に支障が生じなければ、特に限定されるものではないが、例えば光透過性を有する絶縁性の基材６の表面に抵抗値の低い金属箔が接着剤を介して積層接着され、この金属箔が部分的にエッチング処理されることにより複数の金属細線７のメッシュ構造とされる（図４参照）。基材６は、例えばポリエチレンテレフタレート等のシート材料を使用して最終的には厚さ１２５μｍ程度の細長い直線に加工される。   Each conductive pattern layer 5 is not particularly limited as long as it does not hinder the viewing of a large display. For example, a metal foil having a low resistance value is bonded to the surface of an insulating base material 6 having optical transparency. By laminating and bonding via an agent, the metal foil is partially etched to form a mesh structure of a plurality of fine metal wires 7 (see FIG. 4). The substrate 6 is finally processed into an elongated straight line having a thickness of about 125 μm using a sheet material such as polyethylene terephthalate.

金属箔としては、特に制約されるものではないが、例えば金、銀、銅、アルミ等からなる厚さ１０μｍ程度の箔膜が使用される。また、接着剤は、絶縁性接着層２同様、アクリル系の接着剤やシリコーン系の粘着剤等からなり、基材６に薄くスクリーン印刷されたり、塗布され、乾燥硬化後に１５μｍ程度の厚さとされる。   Although it does not restrict | limit especially as metal foil, For example, the foil film | membrane about 10 micrometers in thickness which consists of gold | metal | money, silver, copper, aluminum etc. is used. The adhesive is made of an acrylic adhesive, a silicone adhesive, or the like, like the insulating adhesive layer 2, and is thinly screen-printed or applied to the substrate 6, and has a thickness of about 15 μm after drying and curing. The

このような導電パターン層５は、基材用のシートの表面に金属箔を積層接着し、この金属箔の不要部分をケミカルエッチング処理することにより、複数の金属細線７によるメッシュ構造を形成し、その後、基材用シートを所定の大きさ・長さにカットして金属メッシュ構造の基材６を得ることで製造される。   Such a conductive pattern layer 5 is formed by laminating and bonding a metal foil to the surface of the base sheet, and chemically etching an unnecessary portion of the metal foil to form a mesh structure with a plurality of fine metal wires 7, Then, it manufactures by cut | disconnecting the sheet | seat for base materials to predetermined magnitude | size and length, and obtaining the base material 6 of a metal mesh structure.

上記において、大型ディスプレイ用のセンサパネルを製造する場合には、一対の積層シート１・１Ａを製造するため、先ず、基材用のシートの表面に金属箔を積層接着してその不要部分をケミカルエッチングで除去し、複数の金属細線７によるメッシュ構造を形成し、基材用シートを所定の大きさ・長さにカットして複数の導電パターン層５を製造する。   In the above, when manufacturing a sensor panel for a large display, in order to manufacture a pair of laminated sheets 1 and 1A, first, a metal foil is laminated and bonded to the surface of the base sheet, and the unnecessary portion is chemically treated. Etching is performed to form a mesh structure with a plurality of fine metal wires 7, and the base sheet is cut into a predetermined size and length to produce a plurality of conductive pattern layers 5.

こうして複数の導電パターン層５を製造したら、同じ大きさにカットした透明シート３を２枚用意し、各透明シート３の対向面である片面に接着剤層４用の接着剤を塗布し、この接着剤に複数の導電パターン層５をＸ方向又はＹ方向に向け並べて積層接着し、接着剤の乾燥硬化により接着剤層４と複数の導電パターン層５とを一体化して積層シート１・１Ａを一対製造する。   When the plurality of conductive pattern layers 5 are manufactured in this way, two transparent sheets 3 cut to the same size are prepared, and the adhesive for the adhesive layer 4 is applied to one side which is the opposite surface of each transparent sheet 3. A plurality of conductive pattern layers 5 are laminated and adhered to the adhesive in the X direction or the Y direction, and the adhesive sheet 4 and the plurality of conductive pattern layers 5 are integrated by drying and curing the adhesive to form the laminated sheets 1 and 1A. Make a pair.

一対の積層シート１・１Ａを得たら、この一対の積層シート１・１Ａのいずれか一方の積層シート１・１Ａの対向面に絶縁性接着層２用の接着剤を塗布し、エアの巻き込みに注意しつつ、一対の積層シート１・１Ａを重ねて強固に接着し、ＸＹ方向の導電パターン層５を絶縁性接着層２を介して積層交差させ、その後、接着剤の乾燥硬化で絶縁性接着層２を形成すれば、大型ディスプレイ用のセンサパネルを製造することができる。   When a pair of laminated sheets 1 and 1A is obtained, an adhesive for the insulating adhesive layer 2 is applied to the opposing surface of either one of the pair of laminated sheets 1 and 1A to entrain air. Carefully, a pair of laminated sheets 1 and 1A are stacked and firmly bonded, and the conductive pattern layer 5 in the XY direction is laminated and crossed through the insulating adhesive layer 2, and then the insulating bonding is performed by drying and curing the adhesive. If the layer 2 is formed, a sensor panel for a large display can be manufactured.

上記構成によれば、抵抗値が高く、割れ易いＩＴＯ膜製の導電パターン層を使用するのではなく、抵抗値の低い金属製の導電パターン層５を使用するので、例えディスプレイが大型化しても、導電パターン層５の抵抗値を著しく低減することができ（例えば、５〜８Ω程度）、この結果、ディスプレイの小型化のみならず、大型化（例えば５０インチ以上）に大いに資することができる。   According to the above configuration, instead of using a conductive pattern layer made of an ITO film which has a high resistance value and is easy to break, a metal conductive pattern layer 5 having a low resistance value is used. The resistance value of the conductive pattern layer 5 can be remarkably reduced (for example, about 5 to 8Ω), and as a result, not only the display can be reduced in size but also greatly increased in size (for example, 50 inches or more).

また、例え細長い導電パターン層５の一部にクラックが生じても、各導電パターン層５が単なるメッシュ構造ではなく、複数の金属細線７によるメッシュ構造なので、センサパネルの屈曲にかかわらず、損傷の及んでいない金属細線７により導通を確保することができ、タッチ操作に何ら支障を来たすことがない。   Even if a crack occurs in a part of the elongated conductive pattern layer 5, each conductive pattern layer 5 is not a simple mesh structure, but a mesh structure with a plurality of fine metal wires 7. Conduction can be ensured by the fine metal wires 7 that do not reach, and there is no hindrance to the touch operation.

また、導電パターン層５を複数の金属細線７のメッシュ構造に形成することで、低抵抗となり、部分的に断線しても支障がなく、しかも、開口率が大きくなり、視認性や透過率が向上する。また、センサパネルの製造の際、複数の導電パターン層５間にも絶縁性接着層２用の接着剤が隙間なく充填されるので、エアの巻き込みを防いでホットスポットを防止し、接着力を向上させることができる。   In addition, by forming the conductive pattern layer 5 in a mesh structure of a plurality of fine metal wires 7, the resistance becomes low, there is no problem even if the wires are partially disconnected, and the aperture ratio is increased, and the visibility and transmittance are increased. improves. Further, when the sensor panel is manufactured, the adhesive for the insulating adhesive layer 2 is filled between the plurality of conductive pattern layers 5 without any gaps, so that air entrainment is prevented to prevent hot spots and adhesive force is increased. Can be improved.

また、透明シート３の対向面に導電パターン層５を直接印刷して形成するのではなく、光透過性を有する基材用シートに金属箔を積層してエッチング処理することにより、メッシュ構造の導電パターン層５を得るので、印刷に比べ、導電パターン層５の厚みのバラツキが非常に少なくなる。さらに、導電パターン層５を高精度に製造して検出精度を著しく向上させることが可能となる。   In addition, the conductive pattern layer 5 is not directly printed on the opposing surface of the transparent sheet 3 but is formed by laminating a metal foil on a light-transmitting base material sheet and performing an etching process, thereby conducting a conductive mesh structure. Since the pattern layer 5 is obtained, the variation in the thickness of the conductive pattern layer 5 is very small compared to printing. Furthermore, the detection accuracy can be remarkably improved by manufacturing the conductive pattern layer 5 with high accuracy.

次に、図５は本発明の第２の実施形態を示すもので、この場合には、一対の積層シート１・１Ａを接着する絶縁性接着層２に、透明のスペーサビーズ１０を含有し、ＸＹ方向の導電パターン層５の積層の際、Ｘ方向の導電パターン層５とＹ方向の導電パターン層５との接触を抑制防止するようにしている。
スペーサビーズ１０は、例えば絶縁性の樹脂等を用いて形成され、絶縁性接着層２用の接着剤に多数配合される。その他の部分については、上記実施形態と略同様であるので説明を省略する。 Next, FIG. 5 shows a second embodiment of the present invention. In this case, the insulating adhesive layer 2 for bonding the pair of laminated sheets 1 and 1A contains transparent spacer beads 10, When the conductive pattern layer 5 in the XY direction is stacked, the contact between the conductive pattern layer 5 in the X direction and the conductive pattern layer 5 in the Y direction is suppressed and prevented.
The spacer beads 10 are formed using, for example, an insulating resin, and are mixed in a large number with the adhesive for the insulating adhesive layer 2. The other parts are substantially the same as those in the above embodiment, and thus description thereof is omitted.

本実施形態においても上記実施形態と同様の作用効果が期待でき、しかも、相対向する一対の積層シート１・１Ａの間にスペーサビーズ１０が介在して距離を確保するので、簡易な構成でＸＹ方向の導電パターン層５の短絡を防止することができるのは明らかである。また、絶縁性接着層２用の接着剤にスペーサビーズ１０を配合するので、例え接着剤の粘度が低く、流動性が高くても、ＸＹ方向の導電パターン層５の短絡防止が期待できる。   In the present embodiment, the same effect as the above embodiment can be expected, and the spacer beads 10 are interposed between the pair of opposed laminated sheets 1 and 1A to secure the distance. It is clear that short circuit of the conductive pattern layer 5 in the direction can be prevented. Moreover, since the spacer beads 10 are blended in the adhesive for the insulating adhesive layer 2, even if the viscosity of the adhesive is low and the fluidity is high, it can be expected to prevent a short circuit of the conductive pattern layer 5 in the XY direction.

次に、図６ないし図８は本発明の第３の実施形態を示すもので、この場合には、各導電パターン層５を、平面菱形の電極１１が短い導電性ライン１２を介し一列に並んだダイヤモンドパターンに形成し、ＸＹ方向の導電パターン層５の積層交差の際、Ｘ方向の導電パターン層５とＹ方向の導電パターン層５との重なりを抑制するようにしている。
導電パターン層５は、上記実施形態と同様、抵抗値の低い複数の金属細線７によるメッシュ構造に形成される。その他の部分については、上記実施形態と略同様であるので説明を省略する。 Next, FIGS. 6 to 8 show a third embodiment of the present invention. In this case, each conductive pattern layer 5 is arranged in a line through a conductive line 12 having a short rhombic electrode 11. It is formed in a diamond pattern, and the overlapping of the conductive pattern layer 5 in the X direction and the conductive pattern layer 5 in the Y direction is suppressed at the intersection of the conductive pattern layers 5 in the XY direction.
The conductive pattern layer 5 is formed in a mesh structure with a plurality of fine metal wires 7 having a low resistance value, as in the above embodiment. The other parts are substantially the same as those in the above embodiment, and thus description thereof is omitted.

本実施形態においても上記実施形態と同様の作用効果が期待でき、しかも、各導電パターン層５を単なる直線ではなく、ダイヤモンドパターンに形成するので、Ｘ方向の導電パターン層５の電極１１にＹ方向の導電パターン層５の電極１１が重なることなく隣接することとなる。したがって、ＸＹ方向の導電パターン層５の重なり領域がきわめて少なく、センサパネルの光線の透過率の大幅な向上が期待できるのは明らかである。また、導電パターン層５の検出精度を著しく向上させることもできる。   Also in this embodiment, the same effect as the above embodiment can be expected, and each conductive pattern layer 5 is formed not in a straight line but in a diamond pattern, so that the electrode 11 of the conductive pattern layer 5 in the X direction is formed in the Y direction. The electrodes 11 of the conductive pattern layer 5 are adjacent to each other without overlapping. Therefore, it is clear that the overlapping area of the conductive pattern layers 5 in the XY directions is extremely small, and a significant improvement in the light transmittance of the sensor panel can be expected. Further, the detection accuracy of the conductive pattern layer 5 can be remarkably improved.

なお、上記実施形態の絶縁性接着層２は、光透過性を有する両面粘着テープ等としても良い。また、透明シート３の片面に接着剤層４用の接着剤を塗布することなく、各導電パターン層５の裏面に接着剤を塗布して接着しても良い。また、上記実施形態では複数の導電パターン層５をそれぞれ直線に形成したが、複数の導電パターン層５の少なくとも一部を屈曲させたり、湾曲させ、複数の導電パターン層５と指との対向領域を拡大して検出精度を向上させても良い。   In addition, the insulating adhesive layer 2 of the said embodiment is good also as a double-sided adhesive tape etc. which have a light transmittance. Moreover, you may apply | coat an adhesive agent to the back surface of each conductive pattern layer 5, and may adhere | attach, without apply | coating the adhesive agent for adhesive bond layers 4 to the single side | surface of the transparent sheet 3. FIG. In the above-described embodiment, the plurality of conductive pattern layers 5 are each formed in a straight line. However, at least a part of the plurality of conductive pattern layers 5 is bent or curved, and a region where the plurality of conductive pattern layers 5 and the fingers are opposed to each other. May be expanded to improve detection accuracy.

また、上記実施形態のメッシュ構造は、目が円形、三角形、矩形、多角形等とすることができる。また、上記実施形態では一対の積層シート１・１Ａを接着する絶縁性接着層２に透明のスペーサビーズ１０を含有したが、この代わりとして、電極部分である導電パターン層５を予めコートしたり、ドット形状にスペーサを印刷することもできる。また、大型ディスプレイ用のセンサパネルは、直線的な平板構造でも良いし、円弧形の湾曲構造でも良く、又家庭用や業務用を問うものではない。   In the mesh structure of the above embodiment, the eyes can be circular, triangular, rectangular, polygonal, or the like. Moreover, in the said embodiment, although the transparent spacer bead 10 was contained in the insulating adhesive layer 2 which adhere | attaches a pair of lamination sheet 1 * 1A, as an alternative, the conductive pattern layer 5 which is an electrode part is previously coated, Spacers can also be printed in a dot shape. Further, the sensor panel for a large display may have a straight flat plate structure or an arc-shaped curved structure, and is not intended for home use or business use.

さらに、大型ディスプレイのセンサパネルを一対の積層シート１・１Ａにより形成するのではなく、一枚の透明シート３により形成することもできる。この場合、透明シート３の表裏両面に複数の導電パターン層５を光透過性の絶縁性接着層２を介しそれぞれ配列形成し、表面における複数の導電パターン層５をＸ方向又はＹ方向に向けるとともに、裏面における複数の導電パターン層５をＹ方向又はＸ方向に向け、各導電パターン層５を金属製のメッシュ構造に形成すると良い。こうすれば、大型ディスプレイのセンサパネルを薄く形成することができる。   Furthermore, the sensor panel of the large display can be formed not by the pair of laminated sheets 1 and 1A but by the single transparent sheet 3. In this case, a plurality of conductive pattern layers 5 are arranged on both the front and back surfaces of the transparent sheet 3 via the light-transmitting insulating adhesive layer 2, and the plurality of conductive pattern layers 5 on the surface are directed in the X direction or the Y direction. The plurality of conductive pattern layers 5 on the back surface may be oriented in the Y direction or X direction, and each conductive pattern layer 5 may be formed in a metal mesh structure. By doing so, the sensor panel of the large display can be formed thin.

次に、本発明の実施例を比較例と共に説明する。
〔実施例〕
先ず、導電パターン層を製造するため、基材用のシートとして厚さ１２５μｍのポリエチレンテレフタレート製のシートを用意し、この透明のシートの表面に金属箔として厚さ１０μｍの銅箔を接着剤により接着してその不要部分をケミカルエッチングし、複数の金属細線によるメッシュ構造を形成した。接着剤の乾燥硬化後の厚さは１５μｍに調整した。また、金属細線によるメッシュ構造は、パターン間の距離を０．３ｍｍとし、金属細線の線幅を１５μｍとした。 Next, examples of the present invention will be described together with comparative examples.
〔Example〕
First, in order to produce a conductive pattern layer, a sheet made of polyethylene terephthalate having a thickness of 125 μm is prepared as a sheet for a substrate, and a copper foil having a thickness of 10 μm is bonded to the surface of the transparent sheet with an adhesive. Then, the unnecessary portion was chemically etched to form a mesh structure with a plurality of fine metal wires. The thickness of the adhesive after drying and curing was adjusted to 15 μm. Moreover, the mesh structure by a metal fine wire made the distance between patterns 0.3 mm, and made the line | wire width of the metal fine wire 15 micrometers.

こうして金属製のメッシュ構造を形成したら、シートを所定の大きさ・長さにカットして透明の導電パターン層（表面抵抗値＜０．１Ω／□）を複数製造した。この複数の導電パターン層は、Ｘ方向用のタイプを６６０×６ｍｍの大きさで５本製造し、Ｙ方向用のタイプを３７０×６ｍｍの大きさで５本製造した。   After forming a metal mesh structure in this way, the sheet was cut into a predetermined size and length to produce a plurality of transparent conductive pattern layers (surface resistance value <0.1Ω / □). For the plurality of conductive pattern layers, five types for the X direction were manufactured with a size of 660 × 6 mm, and five types for the Y direction were manufactured with a size of 370 × 6 mm.

次いで、同じ大きさの透明シートを２枚用意し、各透明シートの片面に接着剤層用の接着剤を積層し、この接着剤に複数の導電パターン層をＸ方向又はＹ方向に向け一列に並べて積層接着し、接着剤の乾燥硬化により接着剤層と複数の導電パターン層とを一体化して積層シートを一対製造した。   Next, two transparent sheets of the same size are prepared, an adhesive for the adhesive layer is laminated on one side of each transparent sheet, and a plurality of conductive pattern layers are lined up in this adhesive in the X or Y direction. A pair of laminated sheets was produced by laminating and adhering to each other and integrating the adhesive layer and the plurality of conductive pattern layers by drying and curing the adhesive.

一対の積層シートを製造したら、この一対の積層シートのいずれか一方の積層シートの対向面に絶縁性接着層用の接着剤を塗布し、一対の積層シートを重ねて強固に接着するとともに、ＸＹ方向の導電パターン層を絶縁性接着層を介して直交させた後、接着剤を乾燥硬化させて厚さ１５μｍの絶縁性接着層を透明に形成することにより、３０インチ用の大型ディスプレイのセンサパネルを製造した。   After manufacturing a pair of laminated sheets, an adhesive for an insulating adhesive layer is applied to the facing surface of one of the laminated sheets, and the pair of laminated sheets are stacked and firmly bonded together, and XY The conductive pattern layer in the direction is orthogonally crossed through the insulating adhesive layer, and then the adhesive is dried and cured to form a transparent insulating adhesive layer having a thickness of 15 μm. Manufactured.

〔比較例〕
厚さ１００μｍのポリエチレンテレフタレートフィルムを用意し、このフィルムの片面に、酸化インジウムと酸化錫の混合酸化物であるＩＴＯを直流マグネトロンスパッタリング法により成膜して透明の導電性薄膜を得た。この透明の導電性薄膜は、厚さ４０ｎｍであり、表面抵抗値が１５０Ω／□であった。 [Comparative Example]
A polyethylene terephthalate film having a thickness of 100 μm was prepared, and ITO, which is a mixed oxide of indium oxide and tin oxide, was formed on one side of the film by a direct current magnetron sputtering method to obtain a transparent conductive thin film. The transparent conductive thin film had a thickness of 40 nm and a surface resistance value of 150Ω / □.

透明の導電性薄膜を得たら、この導電性薄膜をエッチングして導電パターン層を形成し、その他は実施例と同様にして３０インチ用の大型ディスプレイのセンサパネルを製造した。   When a transparent conductive thin film was obtained, the conductive thin film was etched to form a conductive pattern layer. Otherwise, a sensor panel for a large display for 30 inches was manufactured in the same manner as in the example.

製造した大型ディスプレイ用のセンサパネルの抵抗値を測定したところ、実施例の導電パターン層の場合には、Ｘ方向が６６０×６ｍｍで８Ω、Ｙ方向が３７０×６ｍｍで５Ωとなり、低い数値を示した。
これに対し、比較例の導電パターン層の場合には、６６０×６ｍｍで１６．５ｋΩであり、実に高い数値を示した。 When the resistance value of the manufactured sensor panel for a large display was measured, in the case of the conductive pattern layer of the example, the X direction was 660 × 6 mm and 8Ω, and the Y direction was 370 × 6 mm and 5Ω, indicating a low value. It was.
On the other hand, in the case of the conductive pattern layer of the comparative example, it was 16.5 kΩ at 660 × 6 mm, showing a really high numerical value.

１ 積層シート
１Ａ 積層シート
２ 絶縁性接着層
３ 透明シート
４ 接着剤層
５ 導電パターン層
６ 基材
７ 金属細線
１０ スペーサビーズ（スペーサ粒子）
１１ 電極 DESCRIPTION OF SYMBOLS 1 Laminated sheet 1A Laminated sheet 2 Insulating adhesive layer 3 Transparent sheet 4 Adhesive layer 5 Conductive pattern layer 6 Base material 7 Metal fine wire 10 Spacer beads (spacer particles)
11 electrodes

Claims (4)

対向する一対の積層シートを光透過性の絶縁性接着層を介して接着した大型ディスプレイ用のセンサパネルであって、
積層シートは、絶縁性の透明シートと、この透明シートの対向面に配列形成されて絶縁性接着層に接着する複数の導電パターン層とを含み、この導電パターン層を金属製のメッシュ構造としたことを特徴とする大型ディスプレイ用のセンサパネル。 A sensor panel for a large display in which a pair of opposed laminated sheets are bonded via a light-transmitting insulating adhesive layer,
The laminated sheet includes an insulating transparent sheet and a plurality of conductive pattern layers that are arranged on the opposite surface of the transparent sheet and adhere to the insulating adhesive layer, and the conductive pattern layer has a metal mesh structure. A sensor panel for large displays. 絶縁性接着層に、絶縁性を有する透明のスペーサ粒子を含有した請求項１記載の大型ディスプレイ用のセンサパネル。   The sensor panel for a large display according to claim 1, wherein the insulating adhesive layer contains transparent spacer particles having insulating properties. 一対の積層シートのうち、一の積層シートの複数の導電パターン層をＸ方向に向けるとともに、他の積層シートの複数の導電パターン層をＹ方向に向け、各導電パターン層を、平面略菱形の電極が一列に並んだダイヤモンドパターンに形成した請求項１又は２記載の大型ディスプレイ用のセンサパネル。   Of the pair of laminated sheets, a plurality of conductive pattern layers of one laminated sheet are directed in the X direction, a plurality of conductive pattern layers of other laminated sheets are oriented in the Y direction, The sensor panel for a large display according to claim 1 or 2, wherein the electrodes are formed in a diamond pattern arranged in a line. 導電パターン層を、光透過性の基材に金属箔を積層し、この金属箔を部分的に除去して複数の金属細線のメッシュ構造にすることで形成した請求項１、２、又は３記載の大型ディスプレイ用のセンサパネル。   4. The conductive pattern layer is formed by laminating a metal foil on a light-transmitting substrate and partially removing the metal foil to form a mesh structure of a plurality of fine metal wires. Sensor panel for large displays.
JP2009162360A 2009-07-09 2009-07-09 Sensor panel for large display and manufacturing method thereof Active JP5361579B2 (en)

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JP2013105453A (en) * 2011-11-16 2013-05-30 Dainippon Printing Co Ltd Protective plate and display device with protective plate
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JP2015150884A (en) * 2014-02-19 2015-08-24 富士フイルム株式会社 Laminate structure and touch panel module
JP2016505991A (en) * 2013-01-07 2016-02-25 マイクロソフト テクノロジー ライセンシング，エルエルシー Capacitive touch surface in the vicinity of the display
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KR20170037969A (en) 2014-07-31 2017-04-05 스미토모 긴조쿠 고잔 가부시키가이샤 Conductive substrate for touch panel, and method of manufacturing conductive substrate for touch panel
KR20170046661A (en) 2014-08-27 2017-05-02 스미토모 긴조쿠 고잔 가부시키가이샤 Electrode substrate film and manufacturing method therefor
KR20170048362A (en) 2014-08-27 2017-05-08 스미토모 긴조쿠 고잔 가부시키가이샤 Laminate film, electrode substrate film, and manufacturing method therefor
JP2017097671A (en) * 2015-11-25 2017-06-01 株式会社ジャパンディスプレイ Detection device and display device
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US9762235B2 (en) 2012-03-02 2017-09-12 Novalia Ltd Touch-sensitive input device
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KR20180132625A (en) 2016-04-05 2018-12-12 스미토모 긴조쿠 고잔 가부시키가이샤 Conductive substrate
KR20190030659A (en) 2016-07-12 2019-03-22 스미토모 긴조쿠 고잔 가부시키가이샤 LAMINATE SUBSTRATE, ELECTRONALLIC SUBSTRATE, LAMINATE SUBSTRATE PROCESS AND METHOD
US10752985B2 (en) 2014-10-29 2020-08-25 Sumitomo Metal Mining Co., Ltd. Laminate film and electrode substrate film, and method of manufacturing the same

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JP2011129112A (en) * 2009-11-20 2011-06-30 Fujifilm Corp Conductive sheet, method of using the same, and capacitive touch panel
US8766105B2 (en) 2009-11-20 2014-07-01 Fujifilm Corporation Conductive sheet, method for using conductive sheet, and capacitive touch panel
JP2011113149A (en) * 2009-11-24 2011-06-09 Fujifilm Corp Conductive sheet, use method for the same and capacitance type touch panel
JP2013521563A (en) * 2010-03-03 2013-06-10 ミレナノテク シーオー．，エルティーディー． Capacitive touch panel and manufacturing method thereof
US9244573B2 (en) 2010-03-03 2016-01-26 Miraenanotech Co., Ltd. Capacitive touch panel including embedded sensing electrodes
JP2013525913A (en) * 2010-04-28 2013-06-20 ドンジン セミケム カンパニー リミテッド Touch panel and manufacturing method thereof
JP2012006377A (en) * 2010-05-28 2012-01-12 Fujifilm Corp Method for producing conductive sheet and method for producing touch panel
JP2012198740A (en) * 2011-03-22 2012-10-18 Panasonic Corp Touch panel and display device including touch panel
WO2012157559A1 (en) * 2011-05-13 2012-11-22 富士フイルム株式会社 Conductive sheet and touch panel
JP2012238278A (en) * 2011-05-13 2012-12-06 Fujifilm Corp Conductive sheet and touch panel
JP2012238276A (en) * 2011-05-13 2012-12-06 Fujifilm Corp Conductive sheet and touch panel
WO2012157557A1 (en) * 2011-05-13 2012-11-22 富士フイルム株式会社 Conductive sheet and touch panel
JP2013004076A (en) * 2011-06-14 2013-01-07 Samsung Electro-Mechanics Co Ltd Touch panel and manufacturing method for the same
WO2013035370A1 (en) * 2011-09-09 2013-03-14 Sharp Kabushiki Kaisha Capacitive touch sensor panel, capacitive touch sensor system including same, and information input-output device
CN103782262A (en) * 2011-09-09 2014-05-07 夏普株式会社 Capacitive touch sensor panel, capacitive touch sensor system including same, and information input-output device
JP2013105453A (en) * 2011-11-16 2013-05-30 Dainippon Printing Co Ltd Protective plate and display device with protective plate
GB2520793B (en) * 2012-03-02 2016-11-02 Novalia Ltd Touch-sensitive input device
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GB2499851B (en) * 2012-03-02 2016-11-02 Novalia Ltd Touch-sensitive input device
GB2499851A (en) * 2012-03-02 2013-09-04 Novalia Ltd Touch-sensitive input device
JP2013182542A (en) * 2012-03-03 2013-09-12 Juhn Jong Lin Capacitive touch control device
JP2016505991A (en) * 2013-01-07 2016-02-25 マイクロソフト テクノロジー ライセンシング，エルエルシー Capacitive touch surface in the vicinity of the display
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WO2015115528A1 (en) 2014-01-31 2015-08-06 住友金属鉱山株式会社 Conductive substrate, conductive substrate laminate, method for producing conductive substrate, and method for producing conductive substrate laminate
US10168842B2 (en) 2014-01-31 2019-01-01 Sumitomo Metal Mining Co., Ltd. Conductive substrate, conductive substrate laminate, method for producing conductive substrate, and method for producing conductive substrate laminate
WO2015125562A1 (en) * 2014-02-19 2015-08-27 富士フイルム株式会社 Multilayer structure and touch panel module
JP2015150884A (en) * 2014-02-19 2015-08-24 富士フイルム株式会社 Laminate structure and touch panel module
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US10764997B2 (en) 2014-08-27 2020-09-01 Sumitomo Metal Minning Co., Ltd. Laminate film and electrode substrate film, and method of manufacturing the same
US10026524B2 (en) 2014-08-27 2018-07-17 Sumitomo Metal Mining Co., Ltd. Electrode substrate film and method of manufacturing the same
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US10579199B2 (en) 2015-11-25 2020-03-03 Japan Display Inc. Detection device including conductive thin wires
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