JPH06176624A - Adheive anisotropic conductive heet and connecting method for electric circuit member uing it - Google Patents
Adheive anisotropic conductive heet and connecting method for electric circuit member uing itInfo
- Publication number
- JPH06176624A JPH06176624A JP35266992A JP35266992A JPH06176624A JP H06176624 A JPH06176624 A JP H06176624A JP 35266992 A JP35266992 A JP 35266992A JP 35266992 A JP35266992 A JP 35266992A JP H06176624 A JPH06176624 A JP H06176624A
- Authority
- JP
- Japan
- Prior art keywords
- mesh
- wire
- adhesive
- insulating
- conductive
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
Landscapes
- Non-Insulated Conductors (AREA)
- Conductive Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は複数の電極を有する電気
回路部材間の接続に用いる接着性異方導電シート及びこ
れを用いた電気回路部材の接続方法に関し、特に微細ピ
ッチで配列された電極を有する電気回路部材間の接続に
有効である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive anisotropic conductive sheet used for connecting electric circuit members having a plurality of electrodes and a method for connecting electric circuit members using the same, and more particularly to electrodes arranged at a fine pitch. It is effective for the connection between the electric circuit members having.
【０００２】[0002]
【従来の技術】従来、液晶表示体（ＬＣＤ）、エレクト
ロ・ルミネッセンス表示素子（ＥＬ）、プラズマ表示体
（ＰＤＰ）などとその駆動回路との接続、あるいはＦＰ
Ｃ−ＦＰＣ間やＰＣＢ−ＦＰＣ間等の回路基板間の接続
等で例示される電気回路部材間の電気的、機械的接続に
は、特公昭61-27902に例示される絶縁性接着剤中に導
電性粒子を分散させた異方導電接着剤を、接続する電極
間に挟み、熱と圧力を加え接着固定する方法が実用化さ
れ多用されていた。このほか、導電線と絶縁線とを互い
に直交させてなるメッシュを使った異方導電部材として
は、メッシュを絶縁性ゴム中に埋設し、導電線の切断
端面を電気接点とするゴムコネクタ（特公昭56-1651
0）、メッシュを絶縁性ゴム中に埋設し、導電線の屈
曲部を電気接点とするゴムコネクタ（特公昭55-33589、
実開昭59-41876）があり、導電線を回路のパターンと
して、メッシュをフィルム上の絶縁性接着剤層と貼合せ
たヒートシールコネクタ（特公平4-41477 ）等で例示さ
れるようにいくつかの提案がなされている。2. Description of the Related Art Conventionally, a liquid crystal display (LCD), an electroluminescence display element (EL), a plasma display (PDP) or the like and its drive circuit are connected, or an FP.
For the electrical and mechanical connection between the electric circuit members exemplified by the connection between the circuit boards such as between C-FPC and between PCB-FPC, use an insulating adhesive exemplified in JP-B-61-27902. A method in which an anisotropic conductive adhesive in which conductive particles are dispersed is sandwiched between electrodes to be connected, and heat and pressure are applied for adhesion and fixation has been put into practical use and widely used. In addition, as an anisotropic conductive member using a mesh in which a conductive wire and an insulated wire are orthogonal to each other, a rubber connector (special feature in which the mesh is embedded in insulating rubber and the cut end face of the conductive wire serves as an electrical contact) Kosho 56-1651
0), a rubber connector in which the mesh is embedded in insulating rubber and the bent portion of the conductive wire serves as an electrical contact (Japanese Patent Publication No. 55-33589,
59-41876), and there are several methods such as heat-seal connector (Japanese Patent Publication No. 4-41477) in which a conductive wire is used as a circuit pattern and a mesh is attached to an insulating adhesive layer on a film. Some suggestions have been made.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら前記の
方法には、接着作業時に加えられる熱及び圧力により絶
縁性接着剤が溶融流動し、それに従い導電性粒子が移動
して一ヶ所に集中し局在化することによって生ずるリー
ク不良、電極上から導電性粒子が排除され電気接続が得
られない導通不良を生じるという欠点があった。更に電
極と導電性粒子とは点接触状態であるから温度や湿度と
いう環境条件の変化によって接着剤が伸縮したり接着強
度が低下したりして電気接続が不安定になるという原理
的、構造的な欠点を有していた。また、近年では電極ピ
ッチの微細化や電気信号の高周波化が進み、電極間距離
の短縮化や低抵抗化が要求されているが、絶縁性樹脂に
カーボンブラックやＡｇなどの金属粉を混合した導電ゴ
ムや導電ペーストを使ったものは低抵抗化に限界があっ
た。また前記、のゴムコネクタやのヒートシール
コネクタは、その構成上電極間距離を１mm以下に抑える
ことができず、電極間距離の短縮化に限界があり低抵抗
化や高周波化に対応しきれないという欠点がある。However, in the above method, the insulating adhesive melts and flows due to the heat and pressure applied during the bonding work, and accordingly the conductive particles move and concentrate in one place and are localized. However, there are drawbacks such as a leakage failure caused by the formation of a conductive material and a conduction failure in which the conductive particles are removed from the electrodes and electrical connection cannot be obtained. Furthermore, since the electrodes and the conductive particles are in point contact with each other, changes in environmental conditions such as temperature and humidity cause the adhesive to expand and contract or the adhesive strength to decrease, resulting in unstable electrical connection. Had some drawbacks. In addition, in recent years, the electrode pitch has been made finer and the frequency of electric signals has been made higher, and it has been required to shorten the distance between electrodes and reduce the resistance. However, a metal powder such as carbon black or Ag is mixed with the insulating resin. Those using conductive rubber or conductive paste had a limit in reducing resistance. Further, the rubber connector and the heat seal connector described above cannot suppress the distance between the electrodes to 1 mm or less due to their constitution, and there is a limit to the reduction of the distance between the electrodes, and it is not possible to cope with low resistance and high frequency. There is a drawback that.
【０００４】[0004]
【課題を解決するための手段】本発明は上記した従来技
術の欠点に鑑み、導電線と絶縁線とを互いに直交させメ
ッシュとしたので導電線を所定位置に固定でき、絶縁性
接着剤が溶融流動しても導電線は移動しないのでリーク
不良や導通不良が生じないという利点を有し、導電線の
配列密度をち密にすれば 0.1mmピッチ以下の電極が接続
でき、対向する電極間の距離はメッシュの厚さまで短く
できるので、低抵抗化や高周波化に有利な新規の接着性
異方導電シートと回路の接続方法を提供することを目的
とし、第１の発明は、導電線を縦糸、絶縁線を横糸とす
るメッシュの隙間が絶縁性接着剤で充填されてなる接着
性異方導電シート、第２の発明は、２枚の電気回路部材
の電極を平行に向かい合わせ、前記請求項１に記載の接
着性異方導電シートを挟み押圧し、接着する電気回路部
材の接続方法を要旨とする。In view of the above-mentioned drawbacks of the prior art, the present invention makes the conductive wire and the insulating wire orthogonal to each other to form a mesh, so that the conductive wire can be fixed at a predetermined position and the insulating adhesive is melted. Since the conductive wire does not move even if it flows, it has the advantage of not causing leakage failure or conduction failure.By making the array density of the conductive wire dense, electrodes with a pitch of 0.1 mm or less can be connected, and the distance between opposing electrodes Since the thickness of the mesh can be shortened, it is an object of the present invention to provide a novel method for connecting an adhesive anisotropic conductive sheet and a circuit, which is advantageous for low resistance and high frequency. An adhesive anisotropic conductive sheet in which a gap of a mesh having an insulating wire as a weft is filled with an insulating adhesive, and a second invention is that the electrodes of two electric circuit members are opposed to each other in parallel, Adhesive anisotropic conductive sheet described in And scissors pressed, the gist of the method for connecting an electrical circuit member for bonding.
【０００５】本発明の詳細を以下に述べる。本発明で使
用する導電線には、金属線、カーボン繊維、金属コート
した樹脂線やカーボン繊維などが用いられる。金属線は
Ａｕ、ＳＵＳなどが挙げられ、これらは腐食するおそれ
が少ないので耐腐食処理をする必要は必ずしもないが、
Ｃｕ、Ｎｉ、Ａｌ、リン青銅などの腐食するおそれのあ
る場合は、Ａｕコート、カーボンコート等の耐腐食処理
を施すのが望ましい。樹脂線の代表的な材料としては、
ポリエステル、ナイロンなどの熱可塑性樹脂が挙げられ
るが熱硬化性樹脂であってもよい。導電線の線径は0.01
〜0.40mmの間であれば特に制限はない。その理由は0.01
mm未満では線体の強度が不足しメッシュが織れず、0.40
mmを超えると配列ピッチが、0.50mmを超えて本発明の目
的とする微細ピッチの電極間の接続に適さなくなるから
である。導電線は被接続電気回路部材の電極と接続する
ものであるから、その配列ピッチが粗いと接続できる電
極ピッチが制限されるので、配列ピッチは0.01〜0.50mm
の範囲が好ましい。Details of the present invention will be described below. The conductive wire used in the present invention may be a metal wire, carbon fiber, metal-coated resin wire, carbon fiber, or the like. Examples of the metal wire include Au and SUS, and since these are less likely to corrode, it is not always necessary to perform anticorrosion treatment,
When Cu, Ni, Al, phosphor bronze or the like may be corroded, it is desirable to perform a corrosion resistance treatment such as Au coating or carbon coating. As a typical material of resin wire,
Examples of the thermoplastic resin include polyester and nylon, but thermosetting resin may be used. Conductor wire diameter is 0.01
There is no particular limitation as long as it is between 0.40 mm. The reason is 0.01
If it is less than mm, the strength of the wire is insufficient and the mesh cannot be woven.
If it exceeds mm, the array pitch exceeds 0.50 mm, and it becomes unsuitable for the connection between electrodes having a fine pitch, which is the object of the present invention. Since the conductive wire is connected to the electrode of the connected electric circuit member, the electrode pitch that can be connected is limited if the array pitch is rough, so the array pitch is 0.01 to 0.50 mm.
Is preferred.
【０００６】絶縁線は電気絶縁性材料であれば特に制限
はなく、例えばポリエステル、ポリエチレン、ナイロン
などの熱可塑性樹脂が挙げられる。また、耐熱性が必要
な場合はポリウレタン、ポリフェニレンサルファイド、
アラミド、ポリアリレートなどに例示される熱硬化性樹
脂や耐熱性熱可塑性樹脂を使用するとよい。形状は単
糸、収束糸、撚糸などいずれでも使用できるが、収束糸
や撚糸の場合は絶縁線の切断面が毛羽立ちやすいので、
本発明では単糸がより好ましい。線径は0.01〜1.00mmの
間であれば特に制限はない。その理由は0.01mm未満では
線体の強度が不足しメッシュが織れず、1.00mmを超える
と導電線との線径の比が著しく異なるので織り工程で導
電線が切れたり、隣接する導電線が接触してリーク不良
を生じるおそれがあるからである。The insulating wire is not particularly limited as long as it is an electrically insulating material, and examples thereof include thermoplastic resins such as polyester, polyethylene and nylon. If heat resistance is required, polyurethane, polyphenylene sulfide,
A thermosetting resin or a heat-resistant thermoplastic resin such as aramid or polyarylate may be used. The shape can be single yarn, convergent yarn, twisted yarn, etc., but in the case of convergent yarn or twisted yarn, the cut surface of the insulating wire easily fluffs, so
In the present invention, single yarn is more preferable. The wire diameter is not particularly limited as long as it is between 0.01 and 1.00 mm. The reason is that if it is less than 0.01 mm, the strength of the wire is insufficient and the mesh cannot be woven, and if it exceeds 1.00 mm, the ratio of the wire diameter to the conductive wire is significantly different, so the conductive wire is cut in the weaving process, or the adjacent conductive wire is This is because there is a possibility that they may come into contact with each other and cause a leak failure.
【０００７】本発明の接着性異方導電シートは接着時の
圧力により電気的導通を得るもので、圧力を除去した後
も導電線を電極に圧着するように、導電線あるいは絶縁
線のいずれか一方は弾性力と反復性を有するのが望まし
い。具体的には弾性率が2 ×106 、より好ましくは1 ×
106 kg/cm2以下の材料が好ましく、弾性率がこれより高
いと線体が剛直すぎて電極と導電線との密着性が悪く電
気接続の信頼性が得られない。弾性率の下限は特に制限
はないが、 0.1kg/cm2以下では線体が柔らかすぎて織編
み加工ができずメッシュを作製できない。The adhesive anisotropic conductive sheet of the present invention obtains electrical continuity by the pressure at the time of bonding, and either the conductive wire or the insulated wire can be crimped to the electrode even after the pressure is removed. It is desirable that one has elasticity and repeatability. Specifically, the elastic modulus is 2 × 10 6 , more preferably 1 ×
A material of 10 6 kg / cm 2 or less is preferable, and if the elastic modulus is higher than this, the wire body is too rigid and the adhesion between the electrode and the conductive wire is poor, and the reliability of electrical connection cannot be obtained. The lower limit of the elastic modulus is not particularly limited, but if it is 0.1 kg / cm 2 or less, the wire is too soft to be woven or knitted, and a mesh cannot be produced.
【０００８】前記した導電線を縦糸とし、絶縁線を横糸
として互いに直交するように織ってメッシュを形成す
る。メッシュの織り方は、平織、綾織、横しゃ織、朱珠
織などがありいずれの方法も使用できるが、メッシュの
構造は平織よりも綾織や朱珠織の方がより好ましい。そ
の理由は、本発明では導電線の屈曲部が電極と接触して
電気的導通を得るので、導電線の屈曲部の面積を大きく
する織り方であるほど接続の信頼性が向上し接続抵抗も
低くなるからである。また、縦糸は導電線と絶縁線とを
交互に配列させた構造であってもよい。この場合は隣の
導電線同士が接触するおそれがないという長所がある。
メッシュの厚さは線体の線径および織り方で決まり、一
般に、厚さ＝ａ×（導電線の線径＋絶縁線の線径）（こ
こでａ＝ 0.5〜 1.0）の式で算出されるから0.01〜1.40
mmが好適である。A mesh is formed by weaving the above-mentioned conductive wires as warp threads and insulating wires as weft threads so as to be orthogonal to each other. The weave of the mesh includes plain weave, twill weave, weft weave, and vermillion weave, and any method can be used, but the twill weave or vermilion weave is more preferable than the plain weave. The reason for this is that in the present invention, since the bent portion of the conductive wire comes into contact with the electrode to obtain electrical conduction, the weaving method that increases the area of the bent portion of the conductive wire improves the reliability of the connection and the connection resistance. Because it will be low. Further, the warp yarn may have a structure in which conductive wires and insulating wires are alternately arranged. In this case, there is an advantage that adjacent conductive wires do not come into contact with each other.
The thickness of the mesh is determined by the wire diameter and the weave of the wire, and is generally calculated by the formula of thickness = a x (conductive wire diameter + insulated wire diameter) (where a = 0.5 to 1.0). 0.01 to 1.40
mm is preferred.
【０００９】線体の配列ピッチは各線体の線径の 1.1〜
15.0倍、より詳しくは 1.5〜10.0倍であるのが好まし
い。その理由は、1.1 倍未満では隣合う導電線同士が接
触してリーク不良を生じたり、隙間の空間率が低下して
絶縁性接着剤の充填量が少なく電気回路部材の接着強度
が不足する。逆に15.0倍を超えると線体の密度が低いの
でメッシュが変形し易くなるからである。したがって線
体の線径と配列ピッチによって決まる隙間の空間率は、
本発明の場合は10〜90％であるのが好ましい。The array pitch of the wire rods is 1.1 to the wire diameter of each wire rod.
It is preferably 15.0 times, more specifically 1.5 to 10.0 times. The reason for this is that if the ratio is less than 1.1 times, adjacent conductive wires will come into contact with each other to cause a leak failure, or the void ratio of the gap will decrease, resulting in a small filling amount of the insulating adhesive and insufficient adhesive strength of the electric circuit member. On the contrary, if it exceeds 15.0 times, the density of the wire is low and the mesh is likely to be deformed. Therefore, the void ratio determined by the wire diameter of the wire and the array pitch is
In the case of the present invention, it is preferably 10 to 90%.
【００１０】絶縁性接着剤は電気絶縁性を有するもので
あれば特に制限はなく、例えばポリエステル、ナイロン
などの熱可塑性樹脂、エポキシ、不飽和ポリエステルな
どの熱硬化性樹脂、クロロプレンゴム、ニトリルゴムな
どのゴム系接着剤、スチレン−イソプレン−スチレン共
重合体、スチレン−エチレン−ブチレン−スチレン共重
合体などの熱可塑性エラストマーなどが挙げられ、必要
に応じてこれらの２種以上を混合してもよいし、粘着性
を上げるための粘着付与剤や、電気回路部材との接着強
度を上げるためのカップリング剤などを添加してもよ
い。The insulating adhesive is not particularly limited as long as it has an electric insulating property. For example, thermoplastic resins such as polyester and nylon, thermosetting resins such as epoxy and unsaturated polyester, chloroprene rubber, nitrile rubber, etc. Rubber-based adhesives, thermoplastic elastomers such as styrene-isoprene-styrene copolymers, styrene-ethylene-butylene-styrene copolymers, and the like, and two or more of these may be mixed if necessary. However, a tackifier for increasing the tackiness or a coupling agent for increasing the adhesive strength with the electric circuit member may be added.
【００１１】絶縁性接着剤をメッシュの隙間に充填する
には、絶縁性接着剤中にメッシュを浸漬する方法、
絶縁性接着剤をナイフコーターやスクリーン印刷などで
メッシュに塗工する方法、易剥離性フィルム上に塗工
した絶縁性接着剤とメッシュを貼合せたのち易剥離性フ
ィルムを剥離する方法などがある。絶縁性接着剤の粘度
が高く作業性が劣る場合は、必要に応じて溶剤を添加
し、配合物の粘度を下げるのは任意である。To fill the gaps in the mesh with the insulating adhesive, a method of immersing the mesh in the insulating adhesive,
There is a method of applying an insulating adhesive to the mesh with a knife coater or screen printing, a method of sticking the insulating adhesive coated on the easily peelable film and the mesh, and then peeling the easily peelable film. . When the insulating adhesive has high viscosity and poor workability, it is optional to add a solvent as necessary to reduce the viscosity of the compound.
【００１２】絶縁性接着剤はメッシュの上下両面に配置
した電気回路部材を接着するものであるから、少なくと
もメッシュの隙間が絶縁性接着剤で充填される必要があ
るが、接着強度を上げるなどのため、必要に応じて絶縁
性接着剤の塗布量を増やして線体を覆う程度に厚く付与
してもよい。絶縁性接着剤の厚さはメッシュの厚さの0.
5〜 2.0倍とするのがよい。その理由は 0.5倍未満では
電気回路部材を接着できず、 2.0倍を超えると押圧時に
導電線と電極との間の絶縁性接着剤が排除できずに電気
的に導通しないおそれがあるからである。Since the insulating adhesive bonds the electric circuit members arranged on the upper and lower surfaces of the mesh, it is necessary to fill at least the gap of the mesh with the insulating adhesive, but it is necessary to increase the adhesive strength. Therefore, if necessary, the amount of the insulating adhesive applied may be increased so as to be thick enough to cover the wire. The thickness of the insulating adhesive is 0 of the mesh thickness.
It should be 5 to 2.0 times. The reason is that if it is less than 0.5 times, the electric circuit member cannot be bonded, and if it exceeds 2.0 times, the insulating adhesive between the conductive wire and the electrode cannot be removed during pressing and there is a risk that electrical conduction will not occur. .
【００１３】接着性異方導電シートで電気回路部材間を
接続する工程では、電気回路部材を絶縁性接着剤で接着
固定すると同時に、導電線の屈曲部を絶縁性接着剤の上
下両面から露出させて電極と接触させるために、押圧力
が必要となるが、過度に押圧力を与えると電気回路部材
が変形あるいは破壊したり、導電線が切断したり、導電
線が移動して隣接する導電線が接触しリーク不良を生じ
ることがあるので、押圧力を低減するために加熱や超音
波印加を併用するのは任意である。加熱や超音波を併用
すると絶縁性接着剤の流動性が向上し、屈曲部と電極と
の間から排除し易くなり、導電線と電極との電気的接続
の信頼性が向上する効果もある。さらに、絶縁性接着剤
に熱硬化性樹脂を使用した時は、熱硬化性樹脂の硬化に
必要な熱を与えるという作用もある。In the step of connecting the electric circuit members with the adhesive anisotropic conductive sheet, the electric circuit members are bonded and fixed with the insulating adhesive, and at the same time, the bent portions of the conductive wires are exposed from the upper and lower surfaces of the insulating adhesive. A pressing force is required to make contact with the electrode by contacting the electrodes, but if an excessive pressing force is applied, the electric circuit member will be deformed or destroyed, the conductive wire will be cut, or the conductive wire will move and the adjacent conductive wire will move. However, heating and application of ultrasonic waves are optional in order to reduce the pressing force. The combined use of heating and ultrasonic waves also has the effect of improving the fluidity of the insulating adhesive, making it easier to remove it from between the bent portion and the electrode, and improving the reliability of the electrical connection between the conductive wire and the electrode. Furthermore, when a thermosetting resin is used for the insulating adhesive, it also has an effect of giving heat necessary for curing the thermosetting resin.
【００１４】[0014]
【作用】以下図によって本発明の接着性異方導電シート
の作用を説明する。図１（ａ）に示すように、導電線の
縦糸１と絶縁線の横糸２によりメッシュ３が織られ、
（ｂ）に示すように、メッシュ３の隙間４が絶縁性接着
剤５で充填されて接着性異方導電シート６が作製され
る。導電線と絶縁線がメッシュを形成するので導電線は
所定の位置に確実に固定される。この接着性異方導電シ
ート６を、被接続電気回路部材７、８のそれぞれの直線
状平行電極９、１０を互いに平行に向かい合わせた間に
挟んで押圧すると、（ｃ）に示すように、上に露出した
導電線１の屈曲部はその上に配置された電気回路部材７
上の電極９と接触し、下に露出した導電線１の屈曲部は
その下に配置された電気回路部材８上の電極１０と接触
し、導電線を介して対向する電極が電気的に接続され
る。導電線の縦糸１のピッチと電極７、８のピッチが等
しいときは両者の位置合わせが必要であるが、導電線の
縦糸１のピッチが両電極７、８のピッチより小さいとき
は、図２に示すように、位置合わせの必要はない。The operation of the adhesive anisotropic conductive sheet of the present invention will be described below with reference to the drawings. As shown in FIG. 1A, a mesh 3 is woven by a warp yarn 1 of a conductive wire and a weft yarn 2 of an insulated wire,
As shown in (b), the gap 4 of the mesh 3 is filled with an insulating adhesive 5 to produce an adhesive anisotropic conductive sheet 6. Since the conductive wire and the insulated wire form a mesh, the conductive wire is securely fixed in place. When the adhesive anisotropic conductive sheet 6 is sandwiched and pressed between the linear parallel electrodes 9 and 10 of the connected electric circuit members 7 and 8, respectively, as shown in (c), The bent portion of the conductive wire 1 exposed above is the electric circuit member 7 arranged thereon.
The bent portion of the conductive wire 1 which is in contact with the upper electrode 9 and which is exposed below is in contact with the electrode 10 on the electric circuit member 8 disposed thereunder, and the opposite electrodes are electrically connected via the conductive wire. To be done. When the pitch of the warp yarn 1 of the conductive wire and the pitch of the electrodes 7 and 8 are equal to each other, it is necessary to align them, but when the pitch of the warp yarn 1 of the conductive wire is smaller than the pitch of both electrodes 7 and 8, There is no need for alignment, as shown in.
【００１５】[0015]
（実施例１）縦糸として線径0.05mmで1 μm のＡｕコー
トした弾性率1 ×106kg/cm2 のＣｕ線をピッチ0.30mmで
配列し、横糸として線径0.05mmで弾性率20,000kg/cm2の
ポリエステル線の収束糸をピッチ0.20mmで配列し、平織
でメッシュを作製した。つぎに熱可塑性エラストマーで
あるスチレン−エチレン−ブチレン−スチレン共重合体
に粘着付与剤を配合して得られる絶縁性接着剤をトルエ
ンで希釈して、乾燥後の絶縁性接着剤の厚さがメッシュ
の厚さの 1.5倍になるように易剥離性フィルム上に塗工
し乾燥し、絶縁性接着剤とメッシュを貼合せたのち易剥
離性フィルムを剥離して接着性異方導電シートを作製し
た。ピッチ0.30mmの電極を20本もつＦＰＣの各電極を平
行に向かい合わせ上記接着性異方導電シートを挟み、電
極と導電線とを位置合わせして、圧力10kg/cm2、温度 1
20℃で 30sec間だけ押圧し、ＦＰＣ同士を接着固定し
た。このようにして接着した電極の接続抵抗はすべて10
Ω以下、 180°剥離強度は300g/cm以上であった。これ
を−40℃/100℃で 1,000サイクルの熱衝撃試験をした
後、再び接続抵抗と剥離強度を測定したが、初期値に対
する劣化はなく、安定した接続抵抗と信頼性がある接続
が得られた。(Example 1) 1 μm Au-coated elastic modulus 1 × 10 6 kg / cm 2 Cu wire with a diameter of 0.05 mm was arranged as a warp thread at a pitch of 0.30 mm, and as a weft thread an elastic modulus of 20,000 kg with a diameter of 0.05 mm. Convergent yarns of polyester wire of / cm 2 were arranged at a pitch of 0.20 mm, and a mesh was prepared by plain weaving. Next, the insulating adhesive obtained by blending a styrene-ethylene-butylene-styrene copolymer, which is a thermoplastic elastomer, with a tackifier is diluted with toluene, and the thickness of the insulating adhesive after drying is a mesh. Was coated on an easily peelable film to a thickness 1.5 times the thickness of the film, dried, laminated with an insulating adhesive and a mesh, and then peeled off the easily peelable film to produce an adhesive anisotropic conductive sheet. . The electrodes of the FPC having 20 electrodes with a pitch of 0.30 mm are faced in parallel and the adhesive anisotropic conductive sheet is sandwiched, and the electrodes and the conductive wires are aligned, and the pressure is 10 kg / cm 2 and the temperature is 1
FPCs were bonded and fixed by pressing at 20 ° C for 30 seconds only. The connection resistance of the electrodes bonded in this way is 10
Ω or less, 180 ° peel strength was 300 g / cm or more. After subjecting this to a thermal shock test at −40 ° C / 100 ° C for 1,000 cycles, the connection resistance and peel strength were measured again, but there was no deterioration from the initial values, and stable connection resistance and reliable connection were obtained. It was
【００１６】（実施例２）縦糸として線径0.02mmのＡｕ
線をピッチ0.04mmで配列し、横糸として線径0.03mmのポ
リフェニレンサルファイド線の単糸をピッチ0.05mmで配
列し、綾織のメッシュを作製した。エポキシ樹脂、シラ
ンカップリング剤とトルエンからなる絶縁性接着剤をナ
イフコーターでメッシュに塗工し、乾燥後の絶縁性接着
剤の厚さがメッシュの厚さの 0.7倍になるように接着性
異方導電シートを作製した。ピッチ0.15mmの電極をもつ
ＬＣＤガラス基板とＩＣチップを登載したテープキャリ
アパッケージ（ＴＣＰ）との間に上記接着性異方導電シ
ートを挿入し、電極と導電線とを位置合わせし、長さ10
0mm 、幅３mmのシールヘッドを使用し圧力50kg/cm2、温
度 190℃で 60sec間だけ押圧し、ＬＣＤガラス基板とＴ
ＣＰとを接着固定した。このように接続したＬＣＤガラ
ス基板とＴＣＰの間では、 100mm長の中の全ての電極で
接続抵抗が１Ω以下であり、90°剥離強は 500g/cm以上
で、これを−40℃/100℃で 1,000サイクルの熱衝撃試験
をした後、再び接続抵抗と剥離強度を測定したが、初期
値に対する劣化はなかった。(Example 2) Au having a wire diameter of 0.02 mm as a warp thread
Lines were arranged at a pitch of 0.04 mm, and single yarns of polyphenylene sulfide wire having a wire diameter of 0.03 mm were arranged as a weft yarn at a pitch of 0.05 mm to produce a twill mesh. Apply an insulating adhesive consisting of epoxy resin, silane coupling agent and toluene to the mesh with a knife coater, and adjust the adhesiveness so that the thickness of the insulating adhesive after drying is 0.7 times the mesh thickness. A one-way conductive sheet was produced. The adhesive anisotropic conductive sheet is inserted between an LCD glass substrate having electrodes with a pitch of 0.15 mm and a tape carrier package (TCP) on which an IC chip is mounted, the electrodes are aligned with the conductive wires, and the length is 10
Using a seal head with a width of 0 mm and a width of 3 mm, press it for 60 seconds at a pressure of 50 kg / cm 2 and a temperature of 190 ° C.
The CP and adhesive were fixed. Between the LCD glass substrate and TCP connected in this way, the connection resistance was 1Ω or less at all electrodes within 100 mm length, and the 90 ° peel strength was 500 g / cm or more, which was -40 ° C / 100 ° C. After 1,000 cycles of thermal shock test, the connection resistance and peel strength were measured again, but there was no deterioration from the initial values.
【００１７】（実施例３）縦糸として線径0.30mmのＡｕ
コートしたナイロン線をピッチ0.50mmで配列し、横糸と
して線径0.80mmのポリエステル線の撚糸をピッチ1.50mm
で配列し、４枚朱珠織でメッシュを作製した。つぎにポ
リエステル系熱可塑性樹脂に粘着付与剤と接着剤の凝集
力を高めるための亜鉛華を配合して得られる絶縁性接着
剤を加熱溶融し、その中にメッシュを浸漬して、厚さが
メッシュの厚さの 2.0倍になる接着性異方導電シートを
作製した。ピッチ 0.5mmで 200本のリード電極をもつＩ
ＣチップとＰＣＢの間に上記接着性異方導電シートを挿
入し、電極と導電線とを位置合わせして、圧力10kg/c
m2、120℃で 30sec間だけ押圧し接着固定した。このＩ
ＣチップとＰＣＢとの接続では、 200本全ての電極で接
続抵抗が10Ω以下であり、−40℃/100℃で 1,000サイク
ルの熱衝撃試験をした後再び接続抵抗と剥離強度を測定
したが、初期値に対する劣化はなく、安定した接続抵抗
と信頼性がある接着強度が得られた。(Example 3) Au having a wire diameter of 0.30 mm as warp yarn
The coated nylon wires are arranged at a pitch of 0.50 mm, and the weft threads of polyester wires with a wire diameter of 0.80 mm are arranged at a pitch of 1.50 mm.
, And a mesh was made with 4 pieces of pearl weave. Next, an insulating adhesive obtained by blending a tackifier and zinc white for increasing the cohesive strength of the adhesive with a polyester-based thermoplastic resin is melted by heating, and a mesh is immersed in the insulating adhesive to obtain a thickness of An adhesive anisotropic conductive sheet having a mesh thickness of 2.0 times was prepared. I with 200 lead electrodes with a pitch of 0.5 mm
Insert the above-mentioned adhesive anisotropic conductive sheet between the C chip and PCB, align the electrode and the conductive wire, and apply pressure of 10kg / c.
Adhesion was fixed by pressing for 30 seconds at m 2 at 120 ° C. This I
In the connection between the C chip and the PCB, the connection resistance was 10Ω or less at all 200 electrodes, and the connection resistance and peel strength were measured again after a 1,000-cycle thermal shock test at -40 ℃ / 100 ℃. There was no deterioration with respect to the initial value, and stable connection resistance and reliable adhesive strength were obtained.
【００１８】（比較例１）線径が0.05mmで弾性率が4 ×
106kg/cm2 のタングステン線を用意し、このタングステ
ン線に厚さ1 μm のＡｕコートした導電線を縦糸とし、
一方タングステン線に厚さ1 μm のフェノール樹脂コー
トした絶縁線を横糸とし、その他は実施例１と同様の接
着性異方導電シートを作製し、実施例１と同様のＦＰＣ
同士を接着して固定したところ、20本の電極中５本の接
続抵抗が10Ωを超え、安定した接続抵抗が得られなかっ
た。(Comparative Example 1) The wire diameter is 0.05 mm and the elastic modulus is 4 ×.
Prepare a tungsten wire of 10 6 kg / cm 2 and use 1 μm thick Au-coated conductive wire as the warp thread for this tungsten wire.
On the other hand, a tungsten wire was used as an insulating wire coated with a phenol resin having a thickness of 1 μm as a weft, and an adhesive anisotropic conductive sheet similar to that of Example 1 was produced, and the same FPC as that of Example 1 was prepared.
When the two electrodes were bonded and fixed to each other, the connection resistance of 5 out of 20 electrodes exceeded 10Ω, and a stable connection resistance could not be obtained.
【００１９】（比較例２）乾燥後の絶縁性接着剤の厚さ
がメッシュの厚さの 0.4倍である他は実施例２と同様の
接着性異方導電シートを作製し、ＬＣＤガラス基板とＴ
ＣＰとを接着して固定した。得られた接続体は、90°剥
離強度が 200g/cm以下で安定した接着強度が得られず、
電極と導電線の接続が不安定で、接続抵抗が１Ωを超え
る不良率は45％に達し安定した接続抵抗が得られなかっ
た。(Comparative Example 2) An adhesive anisotropic conductive sheet was prepared in the same manner as in Example 2 except that the thickness of the insulating adhesive after drying was 0.4 times the thickness of the mesh. T
CP was adhered and fixed. The obtained connector has a 90 ° peel strength of 200 g / cm or less and stable adhesive strength cannot be obtained.
The connection between the electrode and the conductive wire was unstable, and the failure rate at which the connection resistance exceeded 1Ω reached 45%, and stable connection resistance could not be obtained.
【００２０】（比較例３）横糸として線径 2.0mmのポリ
エステル線の撚糸をピッチ 3.0mmで配列する以外は実施
例３と同様の接着性異方導電シートを作製し、ＩＣチッ
プとＰＣＢとを接着して固定した。この場合、 200本全
ての電極で接続抵抗が10Ω以下であり、 180°剥離強度
は300g/cm以上であったが、隣り合うＡｕコートしたナ
イロン線同士が接触し、隣接するリード電極間で導通し
てしまうリーク不良が発生した。(Comparative Example 3) An adhesive anisotropic conductive sheet was prepared in the same manner as in Example 3 except that a twisted yarn of a polyester wire having a diameter of 2.0 mm was arranged as a weft at a pitch of 3.0 mm, and an IC chip and a PCB were prepared. Adhered and fixed. In this case, the connection resistance of all 200 electrodes was 10Ω or less, and the 180 ° peel strength was 300g / cm or more, but the adjacent Au-coated nylon wires contacted each other and there was conduction between adjacent lead electrodes. A leak failure occurred.
【００２１】[0021]
【発明の効果】本発明の接着性異方導電シートでは、導
電線が移動しないので接着作業時にリーク不良や導通不
良を生じることがない。さらに導電部材が線であるから
電極との接触面積が増大し、接続の信頼性が向上し接続
抵抗が低抵抗になる。また、本発明は接着剤で電気回路
部材を接着するので保持部品が不要となり、電気機器の
軽量化、薄型化にも効果がある。さらに、本発明の接着
性異方導電シートはメッシュの厚さ程度の短い距離で電
気的な導通を得られるので、電気信号の高速化にも対応
できるという優位性をもつ。In the adhesive anisotropic conductive sheet of the present invention, since the conductive wire does not move, leakage failure or conduction failure does not occur during the bonding work. Further, since the conductive member is a wire, the contact area with the electrode is increased, the reliability of connection is improved, and the connection resistance is reduced. In addition, since the present invention adheres the electric circuit member with an adhesive, a holding component is not required, and it is effective in reducing the weight and thickness of the electric device. Further, since the adhesive anisotropic conductive sheet of the present invention can obtain electrical conduction in a short distance of about the thickness of the mesh, it has an advantage of being able to cope with high-speed electric signals.
【図１】（ａ）は本発明の接着性異方導電シートを構成
するメッシュの平面図、（ｂ）は（ａ）のメッシュに絶
縁性接着剤を充填した本発明の接着性異方導電シートの
Ｘ−Ｘ線に沿う縦断面図、（ｃ）は本発明の接着性異方
導電シートにより電気回路部材を接続したときの縦断面
図である。FIG. 1A is a plan view of a mesh constituting the adhesive anisotropic conductive sheet of the present invention, and FIG. 1B is an adhesive anisotropic conductive film of the present invention in which the mesh of FIG. 1A is filled with an insulating adhesive. FIG. 3C is a vertical cross-sectional view of the sheet taken along the line XX, and FIG. 6C is a vertical cross-sectional view of when the electric circuit member is connected by the adhesive anisotropic conductive sheet of the present invention.
【図２】本発明の他の例の接着性異方導電シートにより
電気回路部材を接続したときの縦断面図である。FIG. 2 is a vertical cross-sectional view when an electric circuit member is connected by an adhesive anisotropic conductive sheet of another example of the present invention.
１…縦糸 ５…絶縁性接着剤 ２…横糸 ６…接着性異方導電シート ３…メッシュ ７、８…電気回路部材 ４…隙間 ９、１０…電極 DESCRIPTION OF SYMBOLS 1 ... Warp yarn 5 ... Insulating adhesive 2 ... Weft yarn 6 ... Adhesive anisotropic conductive sheet 3 ... Mesh 7, 8 ... Electric circuit member 4 ... Gap 9, 10 ... Electrode
Claims (2)
シュの隙間が絶縁性接着剤で充填されてなる接着性異方
導電シート。1. An adhesive anisotropic conductive sheet obtained by filling a gap between meshes having conductive wires as warp yarns and insulating wires as weft yarns with an insulating adhesive.
い合わせ、前記請求項１に記載の接着性異方導電シート
を挟み押圧し、接着する電気回路部材の接続方法。2. A method of connecting electric circuit members, wherein electrodes of two electric circuit members are opposed to each other in parallel, and the adhesive anisotropic conductive sheet according to claim 1 is sandwiched and pressed to adhere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35266992A JPH06176624A (en) | 1992-12-10 | 1992-12-10 | Adheive anisotropic conductive heet and connecting method for electric circuit member uing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35266992A JPH06176624A (en) | 1992-12-10 | 1992-12-10 | Adheive anisotropic conductive heet and connecting method for electric circuit member uing it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06176624A true JPH06176624A (en) | 1994-06-24 |
Family
ID=18425632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35266992A Pending JPH06176624A (en) | 1992-12-10 | 1992-12-10 | Adheive anisotropic conductive heet and connecting method for electric circuit member uing it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06176624A (en) |
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| US7841862B2 (en) | 2003-02-28 | 2010-11-30 | J.S.T. Mfg. Co., Ltd. | Dielectric sheet |
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| GB2419477A (en) * | 2003-07-14 | 2006-04-26 | Tribotek Inc | Systems and methods for connecting electrical components |
| US7125281B2 (en) | 2003-07-14 | 2006-10-24 | Tribotek, Inc. | Systems and methods for connecting electrical components |
| US7097495B2 (en) | 2003-07-14 | 2006-08-29 | Tribotek, Inc. | System and methods for connecting electrical components |
| WO2005009096A3 (en) * | 2003-07-14 | 2005-02-24 | Tribotek Inc | Systems and methods for connecting electrical components |
| GB2419477B (en) * | 2003-07-14 | 2007-05-09 | Tribotek Inc | Systems and methods for connecting electrical components |
| US7140916B2 (en) | 2005-03-15 | 2006-11-28 | Tribotek, Inc. | Electrical connector having one or more electrical contact points |
| US7458827B2 (en) | 2005-07-18 | 2008-12-02 | Methode Electronics, Inc. | Electrical connector |
| US7214106B2 (en) | 2005-07-18 | 2007-05-08 | Tribotek, Inc. | Electrical connector |
| JP2007284726A (en) * | 2006-04-13 | 2007-11-01 | Shinko Wire Co Ltd | Electrical corrosion preventive application method for reinforced concrete structure and electrical corrosion preventive structure |
| KR101011903B1 (en) * | 2008-07-14 | 2011-02-01 | 박상구 | Method of manufacturing Anisotropic conductive sheet |
| US20130014969A1 (en) * | 2011-07-15 | 2013-01-17 | Cheng-Chien Hsu | Structure of casing of electronic device |
| US10315464B2 (en) * | 2013-07-30 | 2019-06-11 | Kordsa Global Endustrivel Iplik Ve Kord Bezi Sanayi Ve Ticaret Anonim Sirketi | Cap ply reinforcement strip in pneumatic tire |
| KR20200029038A (en) * | 2017-10-24 | 2020-03-17 | 엔지케이 인슐레이터 엘티디 | Wafer placing table and its manufacturing method |
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