JP2920198B2 - Connector for electrical connection - Google Patents
Connector for electrical connectionInfo
- Publication number
- JP2920198B2 JP2920198B2 JP25438692A JP25438692A JP2920198B2 JP 2920198 B2 JP2920198 B2 JP 2920198B2 JP 25438692 A JP25438692 A JP 25438692A JP 25438692 A JP25438692 A JP 25438692A JP 2920198 B2 JP2920198 B2 JP 2920198B2
- Authority
- JP
- Japan
- Prior art keywords
- elastic rubber
- resin film
- rubber layer
- electrodes
- metal
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明はランドグリッドアレ
イ、ＩＣチップなどと配線基板、サブキャリアなどとを
接続するために用いられる電気接続用コネクタに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connection connector used for connecting a land grid array, an IC chip, and the like to a wiring board, a subcarrier, and the like.
【０００２】[0002]
【従来の技術】従来のこの種のコネクタとして、異方性
導電フィルムがある。つまり図４に示すように、エポキ
シ、ウレタンなどの樹脂接着剤１１中に、金属、カーボ
ンなどの導電粒子１２を分散させて異方性導電フィルム
１３とし、このフィルム１３を介して、配線基板１４上
のパッド１５とＩＣチップ１６のパッド１７とを対向さ
せ、ＩＣチップ１６を配線基板１４に加圧すると共に加
熱することにより、図４Ｂに示すように両パッド１５，
１７間に導電粒子１２が挟みこまれ、その加圧方向、つ
まりフィルム１３の厚み方向にのみ接続される。2. Description of the Related Art As this type of conventional connector, there is an anisotropic conductive film. That is, as shown in FIG. 4, conductive particles 12 such as metal and carbon are dispersed in a resin adhesive 11 such as epoxy and urethane to form an anisotropic conductive film 13. The upper pad 15 and the pad 17 of the IC chip 16 are opposed to each other, and the IC chip 16 is pressed against the wiring substrate 14 and heated, so that both the pads 15, as shown in FIG.
The conductive particles 12 are sandwiched between 17, and are connected only in the pressing direction, that is, in the thickness direction of the film 13.
【０００３】また、特開平２−２３９５７８号公報では
超弾性金属球を島状に配列した異方性導電シートが提案
されている。この異方性導電シート１８は図５に示すよ
うに、例えばＮｉ−Ｔｉなどの材料よりなる超弾性金属
球１９がポリイミド樹脂２１の成形により、それに島状
に埋め込まれたものであり、異方性導電シート１８の表
裏に超弾性金属球１９の一部がそれぞれ露出されてい
る。Further, Japanese Patent Application Laid-Open No. 2-239578 proposes an anisotropic conductive sheet in which superelastic metal balls are arranged in an island shape. As shown in FIG. 5, the anisotropic conductive sheet 18 is formed by embedding superelastic metal spheres 19 made of a material such as Ni--Ti in an island shape by molding a polyimide resin 21. Part of the superelastic metal sphere 19 is exposed on the front and back of the conductive sheet 18.
【０００４】配線基板１４とＩＣチップ１６との間に、
この異方性導電シート１８を挿入し、配線基板１４上の
パッド１５とＩＣチップ１６のパッド１７と超弾性金属
球１９との互いの位置合わせを行った後、硬化時の収縮
率の大きな樹脂２２により加圧力を与え、超弾性金属球
１９を圧縮変形させ、電気的に接続を得る。[0004] Between the wiring board 14 and the IC chip 16,
After inserting the anisotropic conductive sheet 18 and aligning the pad 15 on the wiring board 14, the pad 17 of the IC chip 16, and the superelastic metal ball 19 with each other, a resin having a large shrinkage rate upon curing A pressing force is applied by 22 to compress and deform the superelastic metal sphere 19 to obtain an electrical connection.
【０００５】[0005]
【発明が解決しようとする課題】図４Ａ，Ｂに示した従
来の異方性導電フィルム１３は、導体間に導電粒子１２
が点在しているため、電極の狭ピッチ化において絶縁性
に問題があった。図５に示した異方性導電シート１８
は、超弾性金属球１９が規則的に配列されているため、
絶縁性に関しては異方性導電フィルム１３より優れてい
る。しかしながら、面配置された複数の電極の接続を行
う場合には、複数の超弾性金属球１９を弾性変形させる
ために、大きな加圧力を必要とする。それゆえ、樹脂２
２の収縮により加圧力を得る方法も含め、そのような大
きな加圧力を得ることは容易ではなく、接続不良を生ず
る恐れがある。The conventional anisotropic conductive film 13 shown in FIGS. 4A and 4B has conductive particles 12 between conductors.
Are scattered, so that there is a problem in the insulating property in narrowing the pitch of the electrodes. Anisotropic conductive sheet 18 shown in FIG.
Since the superelastic metal spheres 19 are regularly arranged,
The insulating property is superior to the anisotropic conductive film 13. However, when connecting a plurality of electrodes arranged in a plane, a large pressing force is required to elastically deform the plurality of superelastic metal spheres 19. Therefore, resin 2
It is not easy to obtain such a large pressing force, including a method of obtaining a pressing force by contraction of 2, and there is a possibility that a connection failure may occur.
【０００６】この発明の目的は従来の欠点を除去し、狭
ピッチで形成された電極の接続を信頼性良く、簡易に、
かつ比較的小さな加圧力で行うことができる電気接続用
コネクタを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the conventional disadvantages and to easily and reliably connect electrodes formed at a narrow pitch with high reliability.
Another object of the present invention is to provide an electrical connector that can be operated with a relatively small pressing force.
【０００７】[0007]
【課題を解決するための手段】この発明は貫通孔が所定
の間隔で形成されている樹脂フィルムと、その樹脂フィ
ルムの各貫通孔にそれぞれ充填された複数の金属電極
と、それら電極の両端面に形成された導電粒子を分散さ
せた弾性ゴム層とにより電気接続用コネクタを構成した
ものである。SUMMARY OF THE INVENTION The present invention provides a resin film having through holes formed at predetermined intervals, a plurality of metal electrodes filled in the respective through holes of the resin film, and both end surfaces of the electrodes. The electrical connection connector is constituted by the elastic rubber layer in which the conductive particles formed are dispersed.
【０００８】[0008]
【作 用】上記のように構成されたこの発明では、導電
性を有する弾性ゴム層が両端面に形成された金属電極
が、接続すべき両電極間に位置決めされ、これら両電極
により挾持され加圧されることにより、弾性ゴム層が変
形して両電極と圧接し、両電極の電気的接続が行われ
る。According to the present invention, a metal electrode having elastic rubber layers having electrical conductivity formed on both end surfaces is positioned between the electrodes to be connected, and is sandwiched between these two electrodes. By being pressed, the elastic rubber layer is deformed and brought into pressure contact with both electrodes, so that the two electrodes are electrically connected.
【０００９】[0009]
【実施例】この発明の一実施例を図１に示す。ガラス入
りエポキシ樹脂あるいはポリイミドなどよりなり、厚さ
が例えば３００μm 程度の樹脂フィルム３１に複数の貫
通孔３２が所定の間隔で形成される。これら貫通孔３２
はこの実施例においては格子状に配列されている。各貫
通孔３２にそれぞれ金属電極３３が充填され、樹脂フィ
ルム３１に複数の金属電極３３が形成される。金属電極
３３の材料としては例えば半田などが用いられる。FIG. 1 shows an embodiment of the present invention. A plurality of through holes 32 are formed at predetermined intervals in a resin film 31 made of glass-containing epoxy resin or polyimide and having a thickness of, for example, about 300 μm. These through holes 32
Are arranged in a lattice in this embodiment. Each through-hole 32 is filled with a metal electrode 33, and a plurality of metal electrodes 33 are formed on the resin film 31. As a material of the metal electrode 33, for example, solder or the like is used.
【００１０】各金属電極３３の両端部はそれぞれつば状
に広げられて樹脂フィルム３１の板面上に突出されてお
り、これら金属電極３３の両端面に弾性ゴム層３４がそ
れぞれ形成される。弾性ゴム層３４は例えば金属粉やカ
ーボンなどの導電粒子が分散された導電性の弾性ゴムよ
りなり、金属電極３３を覆うように半球状に形成され
る。樹脂フィルム３１の板面からの弾性ゴム層３４の突
出高さは例えば数１００μm 程度とされる。Both ends of each metal electrode 33 are spread in a brim shape and protrude from the plate surface of the resin film 31, and elastic rubber layers 34 are formed on both end surfaces of these metal electrodes 33, respectively. The elastic rubber layer 34 is made of conductive elastic rubber in which conductive particles such as metal powder and carbon are dispersed, and is formed in a hemispherical shape so as to cover the metal electrode 33. The protruding height of the elastic rubber layer 34 from the plate surface of the resin film 31 is, for example, about several 100 μm.
【００１１】図２Ａ〜Ｅは上記のように構成された電気
接続用コネクタ３５の製造方法を工程順に示したもので
ある。樹脂フィルム３１にパンチングあるいはレーザ加
工などにより、複数の貫通孔３２を形成する（Ａ）。各
貫通孔３２に半田をスルーホールメッキし、さらにメッ
キでその中心孔を埋めつくすことによって金属電極３３
を形成する（Ｂ）。各金属電極３３の両端部はそれぞれ
貫通孔３２の径よりわずかに大きな径とされて樹脂フィ
ルム３１の板面上に突出されている。FIGS. 2A to 2E show a method of manufacturing the electrical connector 35 having the above-described structure in the order of steps. A plurality of through holes 32 are formed in the resin film 31 by punching or laser processing (A). Each through-hole 32 is plated with solder through-hole, and the center hole is filled with plating to form a metal electrode 33.
(B). Both ends of each metal electrode 33 have a diameter slightly larger than the diameter of the through-hole 32 and project from the plate surface of the resin film 31.
【００１２】金属電極３３が形成された樹脂フィルム３
１を印刷機のワークホルダ３６上に載置し、各金属電極
３３の一方の端面をそれぞれ覆うように導電粒子が分散
された導電性の液状ゴムをスクリーン印刷し、硬化させ
ることによって、各金属電極３３の一方の端面に導電性
を有する弾性ゴム層３４を半球状に形成する（Ｃ）。な
お、この種の印刷用の導電性液状ゴムは市販のものを用
いることができる。The resin film 3 on which the metal electrodes 33 are formed
1 is placed on a work holder 36 of a printing press, and screen printing and hardening of a conductive liquid rubber in which conductive particles are dispersed so as to cover one end surface of each metal electrode 33, respectively, are performed. An elastic rubber layer 34 having conductivity is formed on one end face of the electrode 33 in a hemispherical shape (C). In addition, a commercially available conductive liquid rubber for this type can be used.
【００１３】樹脂フィルム３１を表裏逆にして樹脂フィ
ルム３１上に突出している各弾性ゴム層３４に対応する
位置に座ぐり３７を施したワークホルダ３８上に載置
し、各金属電極３３の他方の端面にそれぞれ液状ゴムを
（Ｃ）と同様にして印刷し、硬化させる（Ｄ）。ワーク
ホルダ３８を取り外すことにより、樹脂フィルム３１に
充填された金属電極３２の両端面に導電性の弾性ゴム層
３４が形成され、即ち接合面が弾性ゴム層３４で構成さ
れた電気接続用コネクタ３５が完成する（Ｅ）。The resin film 31 is placed upside down on a work holder 38 provided with a counterbore 37 at a position corresponding to each elastic rubber layer 34 protruding above the resin film 31, and the other one of the metal electrodes 33. The liquid rubber is printed on each of the end faces in the same manner as in (C) and cured (D). By removing the work holder 38, a conductive elastic rubber layer 34 is formed on both end surfaces of the metal electrode 32 filled in the resin film 31, that is, an electrical connection connector 35 having a joint surface formed of the elastic rubber layer 34. Is completed (E).
【００１４】次に、図１に示した電気接続用コネクタ３
５を使用して、ランドグリッドアレイ４１と配線基板４
２との接続を行う場合を図３Ａ，Ｂを参照して説明す
る。ランドグリッドアレイ４１は電子部品（デバイス）
の一面に複数のパッド４３が互いに絶縁されて格子状に
形成されたものである。配線基板４２はガラス基板、セ
ラミック基板、アルミナ基板、あるいはガラスエポキシ
基板などよりなり、その板面にパッド４４がパッド４３
と同一ピッチで格子状に形成されている。Next, the electrical connection connector 3 shown in FIG.
5, the land grid array 41 and the wiring board 4
2A and 2B will be described with reference to FIGS. 3A and 3B. The land grid array 41 is an electronic component (device)
A plurality of pads 43 are insulated from each other and formed in a grid on one surface. The wiring substrate 42 is made of a glass substrate, a ceramic substrate, an alumina substrate, a glass epoxy substrate, or the like.
Are formed in a lattice pattern at the same pitch as.
【００１５】パッド４３と同一ピッチで格子状に配列さ
れた弾性ゴム層３４を両面にもつ電気接続用コネクタ３
５をランドグリッドアレイ４１と配線基板４２との間に
配し、パッド４３，パッド４４と一対の弾性ゴム層３４
とを互いに位置合わせし、ランドグリッドアレイ４１を
加圧して、ランドグリッドアレイ４１を電気接続用コネ
クタ３５を介して配線基板４２に押しつける。対向する
パッド４３，４４により挾持され加圧された両弾性ゴム
層３４はそれぞれ弾性変形し、それらパッド４３，４４
とそれぞれ圧接する。An electrical connector 3 having elastic rubber layers 34 arranged on both sides in a grid at the same pitch as the pads 43.
5 is disposed between the land grid array 41 and the wiring board 42, and the pads 43 and 44 and the pair of elastic rubber layers 34
Are aligned with each other, the land grid array 41 is pressurized, and the land grid array 41 is pressed against the wiring board 42 via the connector 35 for electrical connection. The two elastic rubber layers 34 sandwiched and pressed by the opposing pads 43 and 44 are elastically deformed, respectively.
Respectively.
【００１６】この状態で、ランドグリッドアレイ４１と
配線基板４２とを例えばねじ止め式あるいはスロットル
式などの方法により固定することにより、ランドグリッ
ドアレイ４１と配線基板４２とは電気接続用コネクタ３
５を介して機械的に互いに固定されると共に、各対応す
るパッド４３と４４とが弾性ゴム層３４，金属電極３
３，弾性ゴム層３４を通じて電気的に接続される。In this state, the land grid array 41 and the wiring board 42 are fixed to each other by, for example, a screwing method or a throttle method, so that the land grid array 41 and the wiring board 42 are connected to the electrical connector 3.
5 and mechanically fixed to each other, and each corresponding pad 43 and 44 is
3. Electrical connection is made through the elastic rubber layer 34.
【００１７】[0017]
【発明の効果】以上説明したように、この発明による電
気接続用コネクタは、樹脂フィルムに所定の間隔で形成
された各貫通孔にそれぞれ金属電極を充填し、それら金
属電極の両端面に導電粒子を分散させた弾性ゴム層を形
成したものであるから、これら金属電極及び弾性ゴム層
で構成された各接点は、接点間の絶縁性に優れ、接続す
べき電極が狭ピッチで形成されている場合においても信
頼性良く、かつ比較的小さな加圧力で簡易にそれらの接
続を行うことができる。例えば弾性ゴム層の直径を１０
０μm 程度とし、その配列ピッチを３００μm 以下の狭
ピッチとすることも可能である。As described above, in the electrical connector according to the present invention, the metal electrodes are filled in the through holes formed at predetermined intervals in the resin film, and the conductive particles are provided on both end surfaces of the metal electrodes. Since each of the contacts formed of the metal electrode and the elastic rubber layer has excellent insulation between the contacts, the electrodes to be connected are formed at a narrow pitch. Even in such a case, they can be easily and reliably connected with a relatively small pressing force. For example, if the diameter of the elastic rubber layer is 10
The pitch may be about 0 μm, and the arrangement pitch may be as narrow as 300 μm or less.
【００１８】なお、実施例に示したように金属電極の両
端部をつば状に広げて樹脂フィルム上に突出させれば、
樹脂フィルムの貫通孔に金属電極を堅固に固定すること
ができ、また弾性ゴム層を、金属電極の端面を完全に覆
うように、つまり金属電極の端面より大径に形成すれ
ば、金属電極及び樹脂フィルムに対する弾性ゴム層の密
着強度を向上させることができる。As shown in the embodiment, if both ends of the metal electrode are spread in a brim shape and projected on the resin film,
If the metal electrode can be firmly fixed to the through hole of the resin film, and the elastic rubber layer is formed so as to completely cover the end face of the metal electrode, that is, if the diameter is larger than the end face of the metal electrode, the metal electrode and The adhesion strength of the elastic rubber layer to the resin film can be improved.
【００１９】さらに、使用時の弾性ゴム層の変形を弾性
領域内とすれば、接続、開放を繰り返し行うことが可能
である。また、図５に示した従来技術においては、超弾
性金属球１９の弾性変形領域が小さいため、超弾性金属
球１９を高精度で分級し、粒径を揃えなければならず、
かつアルミナ基板のように配線基板に反りがある場合、
追従して全ての超弾性金属球１９による電気的接続を得
ることは困難である。しかし、この発明による電気接続
用コネクタでは接合面は変形量の大きい弾性ゴム層によ
り構成されるため、それら弾性ゴム層の樹脂フィルムの
板面からの突出高さを厳密に揃える必要がなく、また例
えばランドグリッドアレイや配線基板の電極形成面の平
面度が悪く、接続すべき複数の電極の位置精度が悪い場
合でも、それらを良好に接続することができる。なお、
このように弾性ゴム層を大きく変形させて使用する場合
には、例えば液状ゴム印刷時のマスクを厚くして液状ゴ
ムを印刷することにより、樹脂フィルムの板面からの弾
性ゴム層の突出高さを大きくしておけばよい。Furthermore, if the deformation of the elastic rubber layer during use is within the elastic range, connection and disconnection can be repeated. Further, in the prior art shown in FIG. 5, since the elastic deformation region of the superelastic metal sphere 19 is small, the superelastic metal sphere 19 must be classified with high accuracy to make the particle diameter uniform.
And if the wiring board is warped like alumina board,
It is difficult to follow and obtain electrical connection by all the superelastic metal spheres 19. However, in the connector for electrical connection according to the present invention, since the joint surface is constituted by the elastic rubber layer having a large deformation amount, it is not necessary to strictly adjust the height of the elastic rubber layer protruding from the plate surface of the resin film, and For example, even when the flatness of the electrode formation surface of the land grid array or the wiring substrate is poor and the positional accuracy of a plurality of electrodes to be connected is poor, they can be connected well. In addition,
When the elastic rubber layer is used by being largely deformed as described above, for example, the height of the elastic rubber layer protruding from the plate surface of the resin film by printing the liquid rubber by thickening the mask during liquid rubber printing. Should be increased.
【図１】この発明による電気接続用コネクタの一実施例
を示す断面斜視図。FIG. 1 is a sectional perspective view showing an embodiment of an electrical connector according to the present invention.
【図２】この発明による電気接続用コネクタの一実施例
の製造方法を示す断面図。FIG. 2 is a sectional view showing a method of manufacturing an embodiment of the electrical connection connector according to the present invention.
【図３】Ａはこの発明による電気接続用コネクタの一実
施例を用いた接続前の状態を示す断面図、ＢはＡの接続
後の状態を示す断面図。3A is a sectional view showing a state before connection using an embodiment of the electrical connector according to the present invention, and FIG. 3B is a sectional view showing a state after connection of A. FIG.
【図４】従来の異方性導電フィルムを用いた接続を示す
断面図。FIG. 4 is a cross-sectional view showing a connection using a conventional anisotropic conductive film.
【図５】従来提案されている異方性導電シートを用いた
接続を示す断面図。FIG. 5 is a cross-sectional view showing connection using a conventionally proposed anisotropic conductive sheet.
３１ 樹脂フィルム ３２ 貫通孔 ３３ 金属電極 ３４ 弾性ゴム層 ３５ 電気接続用コネクタ DESCRIPTION OF SYMBOLS 31 Resin film 32 Through hole 33 Metal electrode 34 Elastic rubber layer 35 Electrical connector
Claims (1)
脂フィルムと、 その樹脂フィルムの上記各貫通孔にそれぞれ充填された
複数の金属電極と、 それら電極の両端面に形成された導電粒子を分散させた
弾性ゴム層と、 を具備する電気接続用コネクタ。1. A resin film having through holes formed at predetermined intervals, a plurality of metal electrodes respectively filled in the through holes of the resin film, and conductive particles formed on both end surfaces of the electrodes. And an elastic rubber layer in which is dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25438692A JP2920198B2 (en) | 1992-09-24 | 1992-09-24 | Connector for electrical connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25438692A JP2920198B2 (en) | 1992-09-24 | 1992-09-24 | Connector for electrical connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06104035A JPH06104035A (en) | 1994-04-15 |
| JP2920198B2 true JP2920198B2 (en) | 1999-07-19 |
Family
ID=17264266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25438692A Expired - Fee Related JP2920198B2 (en) | 1992-09-24 | 1992-09-24 | Connector for electrical connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2920198B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004206914A (en) | 2002-12-24 | 2004-07-22 | Hitachi Ltd | Land grid array connector and connected structure |
| JP5750101B2 (en) * | 2010-05-11 | 2015-07-15 | ポリマテック・ジャパン株式会社 | connector |
| JP2012124105A (en) * | 2010-12-10 | 2012-06-28 | Fujitsu Ltd | Lga type receptacle, electronic equipment and manufacturing method thereof |
| CN107069261A (en) * | 2017-05-24 | 2017-08-18 | 桂林恒昌电子科技有限公司 | Ultra-fine spacing integrated circuit connector |
-
1992
- 1992-09-24 JP JP25438692A patent/JP2920198B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06104035A (en) | 1994-04-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990309 |
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| LAPS | Cancellation because of no payment of annual fees |