JP4866779B2 - Conductive connection structure and manufacturing method thereof - Google Patents

Conductive connection structure and manufacturing method thereof Download PDF

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JP4866779B2
JP4866779B2 JP2007114087A JP2007114087A JP4866779B2 JP 4866779 B2 JP4866779 B2 JP 4866779B2 JP 2007114087 A JP2007114087 A JP 2007114087A JP 2007114087 A JP2007114087 A JP 2007114087A JP 4866779 B2 JP4866779 B2 JP 4866779B2
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JP2008270646A (en
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俊介 大家
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Toppan Forms Co Ltd
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本発明は、フレキシブル基板の配線やリジッド基板の配線同士を電気的に接続してなる導電接続構造およびその製造方法に関し、さらに詳しくは、異方性導電接着フィルム(ACF)や非導電性フィルム(NCF)などのフィルム状の接着剤を介して、フレキシブル基板の配線やリジッド基板の配線同士を電気的に接続してなる導電接続構造およびその製造方法に関する。  The present invention relates to a conductive connection structure in which wiring of a flexible substrate or wiring of a rigid substrate is electrically connected to each other and a manufacturing method thereof, and more specifically, an anisotropic conductive adhesive film (ACF) or a non-conductive film ( The present invention relates to a conductive connection structure in which wiring of a flexible substrate and wiring of a rigid substrate are electrically connected to each other via a film-like adhesive such as NCF) and a manufacturing method thereof.

従来、異方性導電接着フィルム(Anisotropic Conductive Film、ACF)や非導電性フィルム(Non−conductive Film、NCF)などのフィルム状の接着剤を介して、フレキシブル基板の配線やリジッド基板の配線同士を電気的に接続してなる導電接続構造としては、例えば、図8に示すような構造が挙げられる。
この例の導電接続構造100は、その一面101aに導電部102が設けられ、他面101bに導電性基板103が貼着された第一基材101と、その一面104aに導電部105が設けられた第二基材104および第二基材104の他面104bに設けられたICチップ106からなるチップオンフィルム(COF)107とが、フィルム状の接着剤からなる接着層108を介して接着されてなるものである。また、第一基材101の導電部102と、第二基材104の導電部105は突き合わせられて、電気的に接続されている(特許文献1参照)。
Conventionally, wiring of a flexible substrate or a rigid substrate is connected to each other through a film-like adhesive such as an anisotropic conductive adhesive film (Anisotropic Conductive Film, ACF) or a non-conductive film (NCF). As a conductive connection structure formed by electrical connection, for example, a structure as shown in FIG.
In the conductive connection structure 100 of this example, a conductive portion 102 is provided on one surface 101a, a first base material 101 having a conductive substrate 103 attached to the other surface 101b, and a conductive portion 105 is provided on one surface 104a. Further, the second substrate 104 and a chip-on-film (COF) 107 made of an IC chip 106 provided on the other surface 104b of the second substrate 104 are bonded via an adhesive layer 108 made of a film adhesive. It will be. In addition, the conductive portion 102 of the first base material 101 and the conductive portion 105 of the second base material 104 are abutted and electrically connected (see Patent Document 1).

このような導電接続構造100を製造するには、まず、第一基材101の一面101aに、スクリーン印刷などにより、ポリマー型導電インクを所定の形状に印刷し、導電部102を設ける(図9、10参照)。
次いで、第一基材101の他面101bに、接着剤を介するか、あるいは、融着することにより、導電性基板103を貼着する(図11参照)。
次いで、第一基材101の導電部102と、第二基材104の一面104aに設けられた導電部105とを突き合わせ、フィルム状の接着剤を介して、第一基材101と第二基材104とを接着することにより、導電部102と導電部105とを電気的に接続し(図12参照)、導電接続構造100を得る。
特開2003−168760号公報
In order to manufacture such a conductive connection structure 100, first, polymer-type conductive ink is printed in a predetermined shape on one surface 101a of the first base material 101 by screen printing or the like to provide a conductive portion 102 (FIG. 9). 10).
Next, the conductive substrate 103 is attached to the other surface 101b of the first base material 101 through an adhesive or by fusing (see FIG. 11).
Next, the conductive portion 102 of the first base material 101 and the conductive portion 105 provided on the one surface 104a of the second base material 104 are brought into contact with each other, and the first base material 101 and the second base material are interposed via a film-like adhesive. By bonding the material 104, the conductive portion 102 and the conductive portion 105 are electrically connected (see FIG. 12), and the conductive connection structure 100 is obtained.
JP 2003-168760 A

しかしながら、上述の導電接続構造100およびその製造方法では、第一基材101の導電部102と、第二基材104の導電部105との間に、必要以上に接着剤が介在してしまうため、導電部102と導電部105の間の導電性が十分でない場合があるという問題があった。また、第一基材101と接着層108との接触面積が少ないため接着力が小さく、導電部102と導電部105の電気的な接続が不十分となる不具合が生じるおそれがあり、このような不具合を生じさせないために、さらに大きな接着力が要求されていた。  However, in the above-described conductive connection structure 100 and the manufacturing method thereof, an adhesive is interposed more than necessary between the conductive portion 102 of the first base material 101 and the conductive portion 105 of the second base material 104. There is a problem that the conductivity between the conductive part 102 and the conductive part 105 may not be sufficient. In addition, since the contact area between the first base material 101 and the adhesive layer 108 is small, the adhesive force is small, and there is a risk that the electrical connection between the conductive part 102 and the conductive part 105 may be insufficient. In order not to cause a problem, an even greater adhesion was required.

本発明は、前記事情に鑑みてなされたものであって、異なる基材上にそれぞれ設けられた導電部間の接続において、導電率が高く、かつ、基材間の接着力を大きくすることが可能な導電接続構造およびその製造方法を提供することを目的とする。  The present invention has been made in view of the above circumstances, and in the connection between the conductive portions respectively provided on different base materials, the electrical conductivity is high and the adhesive force between the base materials can be increased. It is an object of the present invention to provide a possible conductive connection structure and a manufacturing method thereof.

本発明の導電接続構造は、第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造であって、前記第一基材の一面とは反対の面に導電性基板が貼着され、前記接着層は前記第二基材の一面から、前記第一基材を厚み方向に貫通し、前記導電性基板に形成された凹部に渡って設けられたことを特徴とする。  In the conductive connection structure of the present invention, the first base material and the second base material are bonded via an adhesive layer made of a film adhesive, and the conductive portion provided on one surface of the first base material, A conductive connection structure in which a conductive portion provided on one surface of the second base material is electrically connected, and a conductive substrate is attached to a surface opposite to the one surface of the first base material, The adhesive layer is provided from one surface of the second base material so as to penetrate the first base material in the thickness direction and over a recess formed in the conductive substrate.

本発明の導電接続構造の製造方法は、第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造の製造方法であって、第一基材の一面全面に導電部材を設ける工程と、前記基材の一面とは反対の面に導電性基板を貼着する工程と、前記導電部材を所定形状の導電部に形成するとともに、前記第一基材を厚み方向に貫通する貫通部、および、前記導電性基板に前記貫通部に連接する凹部を形成する工程と、前記第一基材と前記第二基材とを、フィルム状の接着剤を介して接着し、前記第一基材の導電部と、前記第二基材の導電部とを電気的に接続する工程と、を少なくとも備えたことを特徴とする。  In the method for producing a conductive connection structure of the present invention, the first base material and the second base material are bonded via an adhesive layer made of a film-like adhesive, and the conductive portion provided on one surface of the first base material And a conductive connection structure manufacturing method in which a conductive portion provided on one surface of the second base material is electrically connected, the step of providing a conductive member on the entire surface of the first base material, A step of adhering a conductive substrate to a surface opposite to one surface of the base material, a through portion that penetrates the first base material in the thickness direction, while forming the conductive member in a conductive portion of a predetermined shape; and The step of forming a recess connected to the penetrating portion on the conductive substrate, and the first base material and the second base material are bonded via a film adhesive, and the first base material is electrically conductive. And a step of electrically connecting the conductive part of the second base material to the conductive part of the second base material .

本発明の導電接続構造は、第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造であって、前記第一基材の一面とは反対の面に導電性基板が貼着され、前記接着層は前記第二基材の一面から、前記第一基材を厚み方向に貫通し、前記導電性基板に形成された凹部に渡って設けられたので、接着層と、第一基材および導電性基板との接触面積が大きくなり、第一基材、第二基材および導電性基板の接着力が向上する。その結果、第一基材の導電部と第二基材の導電部の密着性が向上し、これらの間の導電性も向上する。  In the conductive connection structure of the present invention, the first base material and the second base material are bonded via an adhesive layer made of a film adhesive, and the conductive portion provided on one surface of the first base material, A conductive connection structure in which a conductive portion provided on one surface of the second base material is electrically connected, and a conductive substrate is attached to a surface opposite to the one surface of the first base material, Since the adhesive layer is provided from one surface of the second base material through the first base material in the thickness direction and across the recess formed in the conductive substrate, the adhesive layer, the first base material, and The contact area with the conductive substrate is increased, and the adhesion between the first base material, the second base material, and the conductive substrate is improved. As a result, the adhesion between the conductive portion of the first base material and the conductive portion of the second base material is improved, and the conductivity between them is also improved.

本発明の導電接続構造の製造方法は、第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造の製造方法であって、第一基材の一面全面に導電部材を設ける工程と、前記基材の一面とは反対の面に導電性基板を貼着する工程と、前記導電部材を所定形状の導電部に形成するとともに、前記第一基材を厚み方向に貫通する貫通部、および、前記導電性基板に前記貫通部に連接する凹部を形成する工程と、前記第一基材と前記第二基材とを、フィルム状の接着剤を介して接着し、前記第一基材の導電部と、前記第二基材の導電部とを電気的に接続する工程と、を少なくとも備えたので、フィルム状の接着剤は、第二基材、導電部、第一基材11の貫通部および導電性基板の凹部から形成される空間を充填するように流動し、接着層を形成するから、接着剤は第一基材の導電部と第二基材の導電部との間(界面)に必要以上に存在しなくなるので、第一基材の導電部と第二基材の導電部の電気的な接続を十分に確保することができる。したがって、第一基材の導電部と第二基材の導電部の間の導電率を向上することができる。また、第一基材と第二基材の接着時に、フィルム状の接着剤は、第二基材、導電部、第一基材11の貫通部および導電性基板の凹部から形成される空間を充填するように流動し、接着層を形成するので、第一基材、第二基材および導電性基板の接着力が向上する。   In the method for producing a conductive connection structure of the present invention, the first base material and the second base material are bonded via an adhesive layer made of a film-like adhesive, and the conductive portion provided on one surface of the first base material And a conductive connection structure manufacturing method in which a conductive portion provided on one surface of the second base material is electrically connected, the step of providing a conductive member on the entire surface of the first base material, A step of adhering a conductive substrate to a surface opposite to one surface of the base material, a through portion that penetrates the first base material in the thickness direction, while forming the conductive member in a conductive portion of a predetermined shape; and The step of forming a recess connected to the penetrating portion on the conductive substrate, and the first base material and the second base material are bonded via a film adhesive, and the first base material is electrically conductive. And at least a step of electrically connecting the conductive portion of the second base material with the film. The adhesive flows so as to fill the space formed by the second base material, the conductive portion, the penetrating portion of the first base material 11 and the concave portion of the conductive substrate, and forms an adhesive layer. Electrical connection between the conductive part of the first base material and the conductive part of the second base material is eliminated more than necessary between the conductive part of the first base material and the conductive part of the second base material (interface). Can be secured sufficiently. Therefore, the electrical conductivity between the conductive part of the first base material and the conductive part of the second base material can be improved. Moreover, at the time of adhesion | attachment of a 1st base material and a 2nd base material, a film-form adhesive removes the space formed from the 2nd base material, an electroconductive part, the penetration part of the 1st base material 11, and the recessed part of an electroconductive board | substrate. Since it flows so as to fill and forms an adhesive layer, the adhesive strength of the first base material, the second base material and the conductive substrate is improved.

本発明の導電接続構造およびその製造方法の最良の形態について説明する。
なお、この形態は、発明の趣旨をより良く理解させるために具体的に説明するものであり、特に指定のない限り、本発明を限定するものではない。
The best mode of the conductive connection structure and the manufacturing method thereof of the present invention will be described.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the present invention unless otherwise specified.

(導電接続構造)
図1は、本発明の導電接続構造の一実施形態を示す概略断面図である。
この実施形態の導電接続構造10は、その一面11aに導電部12が設けられた第一基材11と、その一面14aに導電部15が設けられた第二基材14とが、フィルム状の接着剤からなる接着層18を介して接着されてなり、導電部12と導電部15は突き合わせられて、電気的に接続されてなるものである。また、第一基材11の他面11bには、導電性基板13が貼着され、接着層18は第二基材14の一面14aから、第一基材11を厚み方向に貫通し、導電性基板13に形成された凹部13aに渡って設けられている。さらに、第二基材14の他面14bには、ICチップ16が設けられ、第二基材14、導電部15およびICチップ16がチップオンフィルム(COF)17をなしている。
(Conductive connection structure)
FIG. 1 is a schematic cross-sectional view showing an embodiment of the conductive connection structure of the present invention.
In the conductive connection structure 10 of this embodiment, the first base material 11 provided with the conductive portion 12 on one surface 11a and the second base material 14 provided with the conductive portion 15 on the one surface 14a are film-shaped. The conductive portion 12 and the conductive portion 15 are abutted and electrically connected to each other through an adhesive layer 18 made of an adhesive. In addition, the conductive substrate 13 is attached to the other surface 11b of the first base material 11, and the adhesive layer 18 penetrates the first base material 11 in the thickness direction from the one surface 14a of the second base material 14, and is conductive. It is provided across the recess 13 a formed in the conductive substrate 13. Further, an IC chip 16 is provided on the other surface 14 b of the second base material 14, and the second base material 14, the conductive portion 15, and the IC chip 16 form a chip-on-film (COF) 17.

第一基材11には、その厚み方向に貫通する貫通部11cが設けられている。
また、第一基材11に貼着された導電性基板13には、第一基材11の貫通部11cに連接し、かつ、第一基材11と接する面13bを基端とし、貫通部11cと開口径の等しい凹部13aが設けられている。この凹部13aの深さは特に限定されないが、導電性基板13を貫通しない程度に設けられる。
また、接着層18は、第二基材14、導電部15、導電部12、第一基材11の貫通部11cおよび導電性基板13の凹部13aから形成される空間を埋めるように設けられている。
The first base material 11 is provided with a through portion 11c that penetrates in the thickness direction.
The conductive substrate 13 adhered to the first base material 11 is connected to the penetrating portion 11c of the first base material 11 and has a surface 13b in contact with the first base material 11 as a base end. A recess 13a having an opening diameter equal to 11c is provided. The depth of the recess 13a is not particularly limited, but is provided so as not to penetrate the conductive substrate 13.
The adhesive layer 18 is provided so as to fill a space formed by the second base material 14, the conductive portion 15, the conductive portion 12, the through portion 11 c of the first base material 11, and the concave portion 13 a of the conductive substrate 13. Yes.

第一基材11、第二基材14としては、ポリアミド系樹脂基材、ポリエチレンテレフタレート(PET)などのポリエステル系樹脂基材、ポリオレフィン系樹脂基材、ポリイミド系樹脂基材、エチレン−ビニルアルコール共重合体基材、ポリビニルアルコール系樹脂基材、ポリ塩化ビニル系樹脂基材、ポリ塩化ビニリデン系樹脂基材、ポリ塩化ビフェニル系樹脂基材、ポリスチレン系樹脂基材、ポリカーボネート系樹脂基材、アクリロニトリルブタジエンスチレン共重合系樹脂基材、ポリエーテルスルホン系樹脂基材などのプラスチック基材などが挙げられる。  Examples of the first base material 11 and the second base material 14 include polyamide resin base materials, polyester resin base materials such as polyethylene terephthalate (PET), polyolefin resin base materials, polyimide resin base materials, and ethylene-vinyl alcohol. Polymer substrate, polyvinyl alcohol resin substrate, polyvinyl chloride resin substrate, polyvinylidene chloride resin substrate, polychlorinated biphenyl resin substrate, polystyrene resin substrate, polycarbonate resin substrate, acrylonitrile butadiene Examples thereof include plastic substrates such as styrene copolymer resin substrates and polyethersulfone resin substrates.

導電部12,15をなす材料としては、ポリマー型導電インク、導電性箔、金属メッキなどが用いられる。
ポリマー型導電インクとしては、例えば、銀粉末、金粉末、白金粉末、アルミニウム粉末、パラジウム粉末、ロジウム粉末、カーボン粉末(カーボンブラック、カーボンナノチューブなど)などの導電微粒子が樹脂組成物に配合されたものが挙げられる。
導電性箔としては、銅箔、銀箔、金箔、白金箔、アルミニウム箔などが挙げられる。
金属メッキとしては、銅メッキ、銀メッキ、金メッキ、白金メッキなどが挙げられる。
As a material forming the conductive portions 12 and 15, polymer type conductive ink, conductive foil, metal plating, or the like is used.
Examples of polymer-type conductive inks are those in which conductive fine particles such as silver powder, gold powder, platinum powder, aluminum powder, palladium powder, rhodium powder, carbon powder (carbon black, carbon nanotube, etc.) are blended in the resin composition Is mentioned.
Examples of the conductive foil include copper foil, silver foil, gold foil, platinum foil, and aluminum foil.
Examples of the metal plating include copper plating, silver plating, gold plating, and platinum plating.

導電性基板13としては、特に限定されず、絶縁基材の一面に金属配線やポリマー型導電インクからなる配線が設けられた配線基板、ITO基板などが挙げられる。
ICチップ16としては、特に限定されない。
The conductive substrate 13 is not particularly limited, and examples thereof include a wiring substrate in which a metal wiring or a wiring made of polymer-type conductive ink is provided on one surface of an insulating base, an ITO substrate, and the like.
The IC chip 16 is not particularly limited.

接着層18をなすフィルム状の接着剤としては、異方性導電接着フィルム(Anisotropic Conductive Film、ACF)や非導電性フィルム(Non−conductive Film、NCF)などが用いられる。  As the film-like adhesive forming the adhesive layer 18, an anisotropic conductive adhesive film (ACF), a non-conductive film (NCF), or the like is used.

この実施形態の導電接続構造10は、接着層18が第二基材14の一面14aから、第一基材11に形成された貫通部11cを貫通し、導電性基板13に形成された凹部13aに渡って設けられているので、接着層18と第一基材11および導電性基板13との接触面積が大きくなり、第一基材11、第二基材14および導電性基板13の接着力が向上する。その結果、導電部12と導電部15の密着性が向上し、これらの間の導電性も向上する。  In the conductive connection structure 10 of this embodiment, the adhesive layer 18 penetrates the through-hole 11 c formed in the first base material 11 from the one surface 14 a of the second base material 14, and the recess 13 a formed in the conductive substrate 13. Since the contact area between the adhesive layer 18 and the first base material 11 and the conductive substrate 13 is increased, the adhesive strength of the first base material 11, the second base material 14, and the conductive substrate 13 is increased. Will improve. As a result, the adhesion between the conductive portion 12 and the conductive portion 15 is improved, and the conductivity between them is also improved.

(導電接続構造の製造方法)
次に、図2〜7を参照して、この実施形態の導電接続構造の製造方法を説明する。
まず、第一基材11の一面11a全面に、ポリマー型導電インク、導電性箔、金属メッキなどからなる導電部材12Aを設ける(図2、3参照)。
次いで、第一基材11の他面11bに、接着剤を介するかあるいは融着することにより、導電性基板13を貼着する(図4参照)。
(Manufacturing method of conductive connection structure)
Next, with reference to FIGS. 2-7, the manufacturing method of the conductive connection structure of this embodiment is demonstrated.
First, a conductive member 12A made of polymer-type conductive ink, conductive foil, metal plating, or the like is provided on the entire surface 11a of the first substrate 11 (see FIGS. 2 and 3).
Next, the conductive substrate 13 is adhered to the other surface 11b of the first base material 11 through an adhesive or by fusing (see FIG. 4).

次いで、レーザーあるいはエッチングにより、導電部材12Aを所定形状の導電部12に形成するとともに、第一基材11を厚み方向に貫通する貫通部11c、および、導電性基板13に貫通部11cに連接する凹部13aを形成する(図5参照)。
次いで、異方性導電接着フィルム(ACF)や非導電性フィルム(NCF)などのフィルム状の接着剤を介して、第一基材11と、別途作製したチップオンフィルム(COF)17の第二基材14とを接着するとともに、第一基材11の導電部12と第二基材14の導電部15とを電気的に接続し、導電接続構造10を得る(図6、7参照)。
なお、第二基材14の導電部15の形成方法は、導電部12と同様であってもよく、あるいは、ポリマー型導電インクのスクリーン印刷などによる方法であってもよい。
Next, the conductive member 12A is formed on the conductive portion 12 having a predetermined shape by laser or etching, and the penetrating portion 11c that penetrates the first base material 11 in the thickness direction and the conductive substrate 13 are connected to the penetrating portion 11c. A recess 13a is formed (see FIG. 5).
Next, the first substrate 11 and the second chip-on-film (COF) 17 that is separately produced are passed through a film-like adhesive such as an anisotropic conductive adhesive film (ACF) or a non-conductive film (NCF). While adhering the base material 14, the conductive part 12 of the first base material 11 and the conductive part 15 of the second base material 14 are electrically connected to obtain the conductive connection structure 10 (see FIGS. 6 and 7).
In addition, the formation method of the electroconductive part 15 of the 2nd base material 14 may be the same as that of the electroconductive part 12, or the method by screen printing etc. of a polymer type conductive ink may be sufficient.

この実施形態の導電接続構造の製造方法は、第一基材11の一面11a全面に導電部材12Aを設けた後、この導電部材12Aを所定形状の導電部12に形成するとともに、第一基材11を厚み方向に貫通する貫通部11c、および、導電性基板13に貫通部11cに連接する凹部13aを形成し、フィルム状の接着剤を介して、第一基材11と第二基材14とを接着するので、フィルム状の接着剤は、第二基材14、導電部15、導電部12、第一基材11の貫通部11cおよび導電性基板13の凹部13aから形成される空間を充填するように流動し、接着層18を形成するから、この接着剤は導電部12と導電部15との間(界面)に必要以上に存在しなくなるので、導電部12と導電部15の電気的な接続を十分に確保することができる。したがって、導電部12と導電部15の間の導電率を向上することができる。また、第一基材11と第二基材14の接着時に、フィルム状の接着剤は、第二基材14、導電部15、導電部12、第一基材11の貫通部11cおよび導電性基板13の凹部13aから形成される空間を充填するように流動し、接着層18を形成するので、第一基材11、第二基材14および導電性基板13の接着力が向上する。  In the manufacturing method of the conductive connection structure of this embodiment, after providing the conductive member 12A on the entire surface 11a of the first base material 11, the conductive member 12A is formed on the conductive portion 12 having a predetermined shape, and the first base material 11 11 through the thickness direction, and a recess 13a connected to the through-hole portion 11c in the conductive substrate 13, and the first base material 11 and the second base material 14 through a film adhesive. Therefore, the film-like adhesive forms a space formed by the second base material 14, the conductive portion 15, the conductive portion 12, the through portion 11 c of the first base material 11 and the concave portion 13 a of the conductive substrate 13. Since the adhesive layer 18 is formed by flowing so as to be filled, the adhesive does not exist more than necessary between the conductive portion 12 and the conductive portion 15 (interface). Secure enough connections That. Therefore, the electrical conductivity between the conductive part 12 and the conductive part 15 can be improved. In addition, when the first base material 11 and the second base material 14 are bonded, the film adhesive includes the second base material 14, the conductive part 15, the conductive part 12, the through part 11 c of the first base material 11, and the conductive property. Since it flows so that the space formed from the recessed part 13a of the board | substrate 13 may be filled and the contact bonding layer 18 is formed, the adhesive force of the 1st base material 11, the 2nd base material 14, and the electroconductive board | substrate 13 improves.

本発明の導電接続構造の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 本発明の導電接続構造の製造方法の一実施形態を示す概略断面図である。It is a schematic sectional drawing which shows one Embodiment of the manufacturing method of the electrically conductive connection structure of this invention. 従来の導電接続構造の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the conventional conductive connection structure. 従来の導電接続構造の製造方法の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the manufacturing method of the conventional conductive connection structure. 従来の導電接続構造の製造方法の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the manufacturing method of the conventional conductive connection structure. 従来の導電接続構造の製造方法の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the manufacturing method of the conventional conductive connection structure. 従来の導電接続構造の製造方法の一例を示す概略断面図である。It is a schematic sectional drawing which shows an example of the manufacturing method of the conventional conductive connection structure.

符号の説明Explanation of symbols

10・・・導電接続構造、11・・・第一基材、12・・・導電部、13・・・導電性基板、14・・・第二基材、15・・・導電部、16・・・ICチップ、17・・・チップオンフィルム、18・・・接着層。 DESCRIPTION OF SYMBOLS 10 ... Conductive connection structure, 11 ... 1st base material, 12 ... Conductive part, 13 ... Conductive substrate, 14 ... 2nd base material, 15 ... Conductive part, 16 * ..IC chip, 17 ... chip on film, 18 ... adhesive layer.

Claims (2)

第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造であって、
前記第一基材の一面とは反対の面に導電性基板が貼着され、前記接着層は前記第二基材の一面から、前記第一基材を厚み方向に貫通し、前記導電性基板に形成された凹部に渡って設けられたことを特徴とする導電接続構造。
The first base material and the second base material are bonded via an adhesive layer made of a film adhesive, and the conductive portion provided on one surface of the first base material and provided on the one surface of the second base material A conductive connection structure in which the conductive part is electrically connected,
A conductive substrate is attached to a surface opposite to one surface of the first base material, and the adhesive layer penetrates the first base material in a thickness direction from one surface of the second base material, and the conductive substrate A conductive connection structure characterized in that the conductive connection structure is provided across a recess formed in the substrate.
第一基材と第二基材が、フィルム状の接着剤からなる接着層を介して接着され、前記第一基材の一面に設けられた導電部と、前記第二基材の一面に設けられた導電部とが電気的に接続されてなる導電接続構造の製造方法であって、
第一基材の一面全面に導電部材を設ける工程と、前記基材の一面とは反対の面に導電性基板を貼着する工程と、前記導電部材を所定形状の導電部に形成するとともに、前記第一基材を厚み方向に貫通する貫通部、および、前記導電性基板に前記貫通部に連接する凹部を形成する工程と、前記第一基材と前記第二基材とを、フィルム状の接着剤を介して接着し、前記第一基材の導電部と、前記第二基材の導電部とを電気的に接続する工程と、を少なくとも備えたことを特徴とする導電接続構造の製造方法。

The first base material and the second base material are bonded via an adhesive layer made of a film adhesive, and the conductive portion provided on one surface of the first base material and provided on the one surface of the second base material A method for manufacturing a conductive connection structure in which a conductive part is electrically connected,
A step of providing a conductive member on the entire surface of the first base material, a step of attaching a conductive substrate to a surface opposite to the one surface of the base material, and forming the conductive member on a conductive portion of a predetermined shape, Forming a penetrating portion penetrating the first base material in the thickness direction, a step of forming a concave portion connected to the penetrating portion in the conductive substrate, and forming the first base material and the second base material into a film shape. And a step of electrically connecting the conductive part of the first base material and the conductive part of the second base material. Production method.

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