JPH11145189A - Element mounting construction and manufacture therefor - Google Patents

Element mounting construction and manufacture therefor

Info

Publication number
JPH11145189A
JPH11145189A JP30162397A JP30162397A JPH11145189A JP H11145189 A JPH11145189 A JP H11145189A JP 30162397 A JP30162397 A JP 30162397A JP 30162397 A JP30162397 A JP 30162397A JP H11145189 A JPH11145189 A JP H11145189A
Authority
JP
Japan
Prior art keywords
columnar electrode
mounting structure
electrode
pad
wiring board
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.)
Withdrawn
Application number
JP30162397A
Other languages
Japanese (ja)
Inventor
Minoru Nakakuki
穂 中久木
Satoru Itaya
哲 板谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP30162397A priority Critical patent/JPH11145189A/en
Publication of JPH11145189A publication Critical patent/JPH11145189A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/10Bump connectors; Manufacturing methods related thereto
    • H01L2224/15Structure, shape, material or disposition of the bump connectors after the connecting process
    • H01L2224/16Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
    • H01L2224/161Disposition
    • H01L2224/16151Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/16221Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/16225Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/22Secondary treatment of printed circuits
    • H05K3/24Reinforcing the conductive pattern
    • H05K3/243Reinforcing the conductive pattern characterised by selective plating, e.g. for finish plating of pads
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/40Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4007Surface contacts, e.g. bumps

Landscapes

  • Wire Bonding (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve connection reliability, by providing a columnar electrode formed on an electrode of a wiring circuit board and an element mounted by face-down bonding through connections on this columnar electrode, thereby forming a sufficient gap between a pattern formed on the element and the wiring circuit board. SOLUTION: A dry film resist 10 is laminated on the side of an element mounting surface of a wiring circuit board 1. As a plating resist, a resist 12 for a columnar electrode is formed, and a columnar electrode 6 is formed at an opening of the resist 12. The resist 12 for columnar electrode which became unnecessary is swelled and peeled off, and a wiring circuit board 1 having a columnar electrode 6 to be used as a connecting portion during element mounting is obtained. On a pad 4 on an element 3, a bump 5 is provided, the side of a forming surface for the bump 5 faces the wiring circuit board, and the columnar electrode 6 and the bump 5 are aligned each other. The bump 5 is melted by reflow or the like, the columnar electrode 6 and a pad 4 on the element 3 are electrically connected, and then the mounting of the element 3 on the wiring circuit board 1 is completed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、素子実装構造及び
その製造方法に関するものである。
The present invention relates to a device mounting structure and a method of manufacturing the same.

【0002】[0002]

【従来の技術】従来、このような分野の技術としては、
例えば、本多 進 編,「最適SMT実装技術ハンドブ
ック」,SCIENCE FORUM,1990,p.
345〜346に開示されるものがあった。図4は従来
の素子実装構造を示す図(その1)である。
2. Description of the Related Art Conventionally, techniques in such a field include:
For example, Susumu Honda, “Optimal SMT Packaging Technology Handbook”, SCIENCE FORUM, 1990, p.
345-346. FIG. 4 is a diagram (part 1) showing a conventional device mounting structure.

【0003】この図に示すように、素子43をフェース
ダウン実装する際の実装構造としては、配線基板41上
に形成された電極42Aと、素子43上に形成されたパ
ッド44とを、例えば、はんだバンプ45等により接合
し、配線基板41と素子43との電気的接続を行うもの
であった。なお、42は配線パターンである。
As shown in FIG. 1, as a mounting structure when the element 43 is mounted face down, an electrode 42A formed on a wiring board 41 and a pad 44 formed on the element 43 are, for example, The connection is made by solder bumps 45 or the like, and the wiring board 41 and the element 43 are electrically connected. In addition, 42 is a wiring pattern.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記し
た従来の素子実装構造では、素子が実装されたエポキシ
樹脂等に代表される配線基板の使用環境下における温度
変化や、素子駆動時における発熱による温度変化のため
に、素子と配線基板の熱膨張係数が異なることにより、
発生する応力が前記バンプ接続部に集中し、バンプ高さ
が十分でないために、応力を分散・吸収しきれずに、ク
ラックを生じる等の接続信頼性の低下が起こり、問題と
なっていた。
However, in the above-described conventional element mounting structure, a temperature change in a use environment of a wiring board typified by an epoxy resin or the like on which the element is mounted, or a temperature due to heat generation during element driving. Due to the change, the element and the wiring board have different thermal expansion coefficients,
Since the generated stress concentrates on the bump connection portion and the bump height is not sufficient, the stress cannot be completely dispersed and absorbed, and the connection reliability such as generation of cracks is reduced.

【0005】また、セラミック基板上に導電ペーストを
用いて、高さの高い柱状電極を形成する方法があるが、
セラミック基板では基板を構成するシートを高温で焼結
させるために、樹脂で構成される安価な樹脂基板には、
この方法を適用することができない。また、図5に示す
ように、実装した素子53と配線基板51との隙間をバ
ンプ接続部を含めて樹脂56で埋め込み、応力を分散さ
せ、バンプ接続部に応力が集中するのを防ぐ方法があ
る。この図において、52は配線パターン、52Aは電
極、54は素子のパッド、55ははんだバンプである。
There is also a method of forming a high columnar electrode using a conductive paste on a ceramic substrate.
In the case of ceramic substrates, in order to sinter the sheets that make up the substrate at high temperatures, inexpensive resin substrates made of resin include:
This method cannot be applied. In addition, as shown in FIG. 5, a method of embedding a gap between the mounted element 53 and the wiring board 51 with a resin 56 including a bump connection portion to disperse the stress and prevent the stress from being concentrated on the bump connection portion. is there. In this figure, 52 is a wiring pattern, 52A is an electrode, 54 is an element pad, and 55 is a solder bump.

【0006】しかしながら、特に、弾性表面波(SA
W)素子のように、素子に形成されたパターンと配線基
板との間に隙間を有する必要がある場合には、この実装
方法を採用することができない。本発明は、上記問題点
を除去し、柱状電極を形成することにより、素子に形成
されたパターンと配線基板との間に十分な隙間を形成
し、接続信頼性の向上を図り得る素子実装構造及びその
製造方法を提供することを目的とする。
However, in particular, surface acoustic waves (SA
W) When a gap needs to be provided between the pattern formed on the element and the wiring board as in the element, this mounting method cannot be adopted. The present invention is directed to an element mounting structure that eliminates the above problems and forms a columnar electrode to form a sufficient gap between a pattern formed on the element and a wiring board, thereby improving connection reliability. And a method for producing the same.

【0007】[0007]

【課題を解決するための手段】本発明は、上記目的を達
成するために、 〔1〕素子実装構造において、配線基板の電極上に形成
される柱状電極と、この柱状電極上に接続部を介してフ
ェースダウンボンディングにより実装される素子とを設
けるようにしたものである。
In order to achieve the above object, the present invention provides: [1] In an element mounting structure, a columnar electrode formed on an electrode of a wiring board and a connection portion on the columnar electrode are provided. And an element to be mounted by face-down bonding.

【0008】〔2〕上記〔1〕記載の素子実装構造にお
いて、前記フェースダウンボンディングにより実装され
る素子が弾性表面波素子である。 〔3〕素子実装構造の製造方法において、配線基板上の
電極に対してめっきレジストを形成する工程と、前記め
っきレジストに開口部を形成する工程と、前記開口部に
対してめっき法により柱状電極を形成する工程と、前記
めっきレジストを除去する工程と、フェースダウンボン
ディングにより前記柱状電極と素子上のパッドとを接続
させる工程とを施すようにしたものである。
[2] In the element mounting structure according to the above [1], the element mounted by face-down bonding is a surface acoustic wave element. [3] In the method of manufacturing an element mounting structure, a step of forming a plating resist on an electrode on a wiring board, a step of forming an opening in the plating resist, and a step of forming a columnar electrode in the opening by plating. , A step of removing the plating resist, and a step of connecting the columnar electrode and the pad on the element by face-down bonding.

【0009】〔4〕上記〔3〕記載の素子実装構造の製
造方法において、前記素子上のパッドに設けられたバン
プによって前記柱状電極と前記素子上のパッドとを電気
的に接続するようにしたものである。 〔5〕上記〔4〕記載の素子実装構造の製造方法におい
て、前記バンプをリフローによって接続するようにした
ものである。
[4] In the method of manufacturing an element mounting structure according to the above [3], the columnar electrode and the pad on the element are electrically connected by a bump provided on the pad on the element. Things. [5] The method for manufacturing an element mounting structure according to the above [4], wherein the bumps are connected by reflow.

【0010】〔6〕上記〔4〕記載の素子実装構造の製
造方法において、前記バンプを金バンプとなし、超音波
ボンディングを用いて接続するようにしたものである。 〔7〕上記〔3〕記載の素子実装構造の製造方法におい
て、前記柱状電極上にめっき法により形成した接続部に
よって前記素子上のパッドと前記柱状電極とを電気的に
接続するようにしたものである。
[6] The method for manufacturing an element mounting structure according to the above [4], wherein the bumps are formed as gold bumps and connected using ultrasonic bonding. [7] The method for manufacturing an element mounting structure according to the above [3], wherein a pad on the element and the columnar electrode are electrically connected by a connecting portion formed on the columnar electrode by a plating method. It is.

【0011】[0011]

【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら詳細に説明する。図1は本発明の
第1実施例を示す素子実装構造の製造工程断面図であ
る。ここでは、モジュール化のための素子の配線基板へ
の実装方法について説明する。 (1)まず、図1(a)に示すように、従来の方法によ
り製造された外形が加工されていない配線基板1には、
素子実装面側に形成された配線パターン2と、この配線
パターン2と一体化した電極2Aがあり、配線パターン
2はスルーホール7によって、配線基板1の裏面側へ電
気的に導かれ、接続用パッド8に接続されている。ま
た、前記スルーホール7には、給電用パターン9も電気
的に接続されている。
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing a manufacturing process of an element mounting structure according to a first embodiment of the present invention. Here, a method of mounting elements for modularization on a wiring board will be described. (1) First, as shown in FIG. 1A, a wiring board 1 manufactured by a conventional method and having an unprocessed outer shape is provided with:
There is a wiring pattern 2 formed on the element mounting surface side and an electrode 2A integrated with the wiring pattern 2, and the wiring pattern 2 is electrically guided to the back surface side of the wiring board 1 by a through hole 7, and is used for connection. Connected to pad 8. A power supply pattern 9 is also electrically connected to the through hole 7.

【0012】(2)次に、図1(b)に示すように、配
線基板1の素子実装面側に、例えば、ドライフィルムレ
ジスト10をラミネートする。 (3)次に、図1(c)に示すように、柱状電極を形成
する電極2A上のみ光遮光性としたフォトマスク11
を、ドライフィルムレジスト10上に合わせて紫外線露
光を行う。
(2) Next, as shown in FIG. 1B, for example, a dry film resist 10 is laminated on the element mounting surface side of the wiring board 1. (3) Next, as shown in FIG. 1C, a photomask 11 having a light shielding property only on the electrode 2A on which the columnar electrode is formed.
Is applied to the dry film resist 10 to perform ultraviolet exposure.

【0013】(4)次に、図1(d)に示すように、例
えば、1wt%−Na2 CO3 水溶液を用いてドライフ
ィルムレジスト10を現像処理し、めっきレジストとし
て、例えば、50μmの厚さの柱状電極用レジスト12
を形成する。 (5)続いて、図1(e)に示すように、例えば、電解
めっき法により給電用パターン9に所定の電流を流すこ
とにより、前記柱状電極用レジスト12の開口部に、例
えば、40μm〜50μmの高さの柱状電極6が形成さ
れる。
(4) Next, as shown in FIG. 1 (d), the dry film resist 10 is developed using, for example, a 1 wt% -Na 2 CO 3 aqueous solution to form a plating resist having a thickness of, for example, 50 μm. Columnar electrode resist 12
To form (5) Subsequently, as shown in FIG. 1 (e), for example, a predetermined current is passed through the power supply pattern 9 by an electrolytic plating method, so that, for example, 40 μm to 40 μm A columnar electrode 6 having a height of 50 μm is formed.

【0014】(6)次に、図1(f)に示すように、例
えば、3wt%−NaOH水溶液を用いて不要となった
柱状電極用レジスト12〔図1(e)参照〕を膨潤剥離
し、素子実装の際の接続部となる柱状電極6を有する配
線基板1を得る。 (7)その後、図1(g)に示すように、配線基板1を
所定の外形サイズにするため、例えば、打ち抜き加工な
どによってスルーホール7の部分で個々の配線基板1に
切り離す。
(6) Next, as shown in FIG. 1 (f), the resist 12 for columnar electrodes (see FIG. 1 (e)) which is no longer needed is swelled and peeled off using, for example, a 3 wt% -NaOH aqueous solution. Then, the wiring substrate 1 having the columnar electrodes 6 serving as the connection portions at the time of element mounting is obtained. (7) Thereafter, as shown in FIG. 1G, the wiring board 1 is cut into individual wiring boards 1 at the through holes 7 by, for example, punching or the like in order to make the wiring board 1 have a predetermined outer size.

【0015】(8)次に、図1(h)に示すように、素
子3上のパッド4には、例えば、はんだ(錫−鉛合金)
によるバンプ5を設け、当該素子3のバンプ5形成面側
を前記外形加工された配線基板1へ対向させ、柱状電極
6とバンプ5とを位置合わせする。 (9)その後、図1(i)に示すように、例えば、リフ
ローなどによりバンプ5を溶融させ、柱状電極6と素子
3上のパッド4とを電気的に接続することにより、素子
3の配線基板1への実装が終了する。
(8) Next, as shown in FIG. 1H, the pad 4 on the element 3 is, for example, solder (tin-lead alloy)
The bumps 5 are formed, and the bump 5 forming surface side of the element 3 is opposed to the wiring board 1 having the outer shape processed, and the columnar electrodes 6 and the bumps 5 are aligned. (9) Thereafter, as shown in FIG. 1 (i), for example, the bumps 5 are melted by reflow or the like, and the columnar electrodes 6 and the pads 4 on the elements 3 are electrically connected, so that the wiring of the elements 3 is formed. The mounting on the substrate 1 is completed.

【0016】このように、第1実施例によれば、柱状電
極をめっき法により形成するようにしたので、安価な樹
脂基板による配線基板においても、任意の高さの柱状電
極を容易に形成することができ、素子と配線基板との間
に生じる応力の度合いによって、柱状電極の高さを増減
させ、応力緩和構造を有するモジュールを得ることがで
きる。
As described above, according to the first embodiment, since the columnar electrodes are formed by the plating method, the columnar electrodes having an arbitrary height can be easily formed even on a wiring board using an inexpensive resin substrate. The height of the columnar electrode can be increased or decreased depending on the degree of stress generated between the element and the wiring board, and a module having a stress relaxation structure can be obtained.

【0017】次に、本発明の第2実施例について説明す
る。図2は本発明の第2実施例を示す素子実装構造の要
部製造工程断面図である。この実施例においても、上記
した第1実施例の工程(1)から(6)まで、つまり、
配線基板1に対して、柱状電極6を形成し、個々の配線
基板1に切り離すまでの工程〔図1(a)〜(f)は、
第1実施例と同様であるので、ここでは、その説明は省
略する。
Next, a second embodiment of the present invention will be described. FIG. 2 is a sectional view showing a main part manufacturing process of an element mounting structure according to a second embodiment of the present invention. Also in this embodiment, steps (1) to (6) of the above-described first embodiment, that is,
Steps until the columnar electrode 6 is formed on the wiring board 1 and separated into individual wiring boards 1 [FIGS. 1 (a) to 1 (f)
Since it is the same as the first embodiment, the description is omitted here.

【0018】(1)図2(a)に示すように、配線基板
1に対して、柱状電極6を形成し、個々の配線基板1に
切り離す。 (2)次に、図2(b)に示すように、素子3上のパッ
ド4には、金バンプ21が形成されており、この素子3
の金バンプ21の形成面側を前記外形加工された配線基
板1へ対向させ、柱状電極6と金バンプ21とを位置合
わせする。
(1) As shown in FIG. 2A, columnar electrodes 6 are formed on the wiring board 1 and cut into individual wiring boards 1. (2) Next, as shown in FIG. 2B, a gold bump 21 is formed on the pad 4 on the element 3.
The surface on which the gold bumps 21 are formed is opposed to the wiring substrate 1 whose outer shape has been processed, and the columnar electrodes 6 and the gold bumps 21 are aligned.

【0019】(3)その後、図2(c)に示すように、
例えば、超音波ボンディング装置を用いて、ボンディン
グツール(図示なし)を素子3の裏面側に当て、超音波
を印加することにより、柱状電極6と素子3上のパッド
4とが金バンプ21を介して電気的に接続され、素子3
の配線基板1への実装が終了する。このように、第2実
施例によれば、柱状電極と素子上のパッドとを超音波ボ
ンディングを用いて金バンプで接続するようにしたの
で、例えば、リフローなどのような高温雰囲気に晒され
ることに不具合のある素子においても、容易に本発明の
素子実装構造が得られ、素子と配線基板との間に生じる
応力について応力緩和構造を有するモジュールを得るこ
とができる。
(3) Thereafter, as shown in FIG.
For example, a bonding tool (not shown) is applied to the back surface of the element 3 using an ultrasonic bonding apparatus, and ultrasonic waves are applied, so that the columnar electrode 6 and the pad 4 on the element 3 are interposed via the gold bump 21. And electrically connected to each other,
Is completed on the wiring board 1. As described above, according to the second embodiment, since the columnar electrodes and the pads on the element are connected by the gold bumps by using the ultrasonic bonding, they are exposed to a high-temperature atmosphere such as reflow. The device mounting structure of the present invention can be easily obtained even in a device having the above-mentioned problem, and a module having a stress relieving structure for a stress generated between the device and the wiring board can be obtained.

【0020】第1及び第2実施例では、素子上のパッド
に電気的接続部となるバンプを、予め形成しておく例に
ついて説明したが、これに限定されるものではない。図
3は本発明の第3実施例を示す素子実装構造の要部製造
工程断面図である。この実施例では、素子上のパッドへ
のバンプの形成を必要とせずに、本発明の素子実装構造
を得る方法について説明する。
In the first and second embodiments, an example has been described in which a bump serving as an electrical connection portion is formed in advance on a pad on an element. However, the present invention is not limited to this. FIG. 3 is a cross-sectional view of a main part manufacturing process of an element mounting structure according to a third embodiment of the present invention. In this embodiment, a method for obtaining the device mounting structure of the present invention without the need to form bumps on pads on the device will be described.

【0021】上記した第1実施例の工程(1)から
(5)まで、つまり、配線基板1に対して、柱状電極用
レジスト12に柱状電極6を形成するまでの工程〔図1
(a)〜(e)〕は、第1実施例と同様であるので、こ
こではその説明は省略する。 (1)上記したように、配線基板1に対して、柱状電極
6をめっき法で形成する。続いて、図3(a)に示すよ
うに、その柱状電極6上に接続部31を、例えば、はん
だ、金などの金属をめっき法で形成する。
The steps (1) to (5) of the first embodiment described above, that is, the steps until the columnar electrode 6 is formed on the columnar electrode resist 12 for the wiring board 1 [FIG.
(A) to (e)] are the same as those in the first embodiment, and a description thereof will not be repeated. (1) As described above, the columnar electrode 6 is formed on the wiring board 1 by the plating method. Subsequently, as shown in FIG. 3A, a connection portion 31 is formed on the columnar electrode 6 by plating a metal such as solder or gold.

【0022】(2)その後は、第1、第2実施例で示し
たように、素子3を、例えば、リフローや超音波ボンデ
ィングなどにより、図3(b)に示すように、柱状電極
6と素子3上のパッド4とを電気的に接続し、配線基板
1への素子3の実装が終了する。このように、第3実施
例によれば、柱状電極を形成した後に、続いて接続部を
めっき法で得るようにしたので、素子上のパッドに対し
て、予め接続部となるバンプを形成する必要がなくなる
ので、素子へのバンプ形成工程を省略でき、その結果、
素子の歩留まりの向上を図ることができる。
(2) Thereafter, as shown in the first and second embodiments, the element 3 is connected to the columnar electrode 6 by, for example, reflow or ultrasonic bonding as shown in FIG. The pads 4 on the element 3 are electrically connected, and the mounting of the element 3 on the wiring board 1 is completed. As described above, according to the third embodiment, after the columnar electrode is formed, the connection portion is subsequently obtained by the plating method. Therefore, a bump serving as the connection portion is formed in advance on the pad on the element. Since there is no need for this, the step of forming bumps on the device can be omitted, and
The yield of elements can be improved.

【0023】なお、本発明は上記実施例に限定されるも
のではなく、本発明の趣旨に基づいて種々の変形が可能
であり、これらを本発明の範囲から排除するものではな
い。
It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

【0024】[0024]

【発明の効果】以上、詳細に説明したように、本発明に
よれば、以下のような効果を奏することができる。 (1)請求項1記載の発明によれば、柱状電極を形成す
ることにより、素子に形成されたパターンと配線基板と
の間に十分な隙間を形成し、接続信頼性の向上を図る。
As described above, according to the present invention, the following effects can be obtained. (1) According to the first aspect of the present invention, by forming the columnar electrodes, a sufficient gap is formed between the pattern formed on the element and the wiring board, and the connection reliability is improved.

【0025】(2)請求項2記載の発明によれば、前記
フェースダウンボンディングにより実装される素子が弾
性表面波素子であるので、パターンと配線基板との間に
十分な隙間を形成することができ、的確な実装を行うこ
とができる。 (3)請求項3乃至5記載の発明によれば、柱状電極を
めっき法により形成するようにしたので、安価な樹脂基
板による配線基板においても、任意の高さの柱状電極を
容易に形成することができ、素子と配線基板との間に生
じる応力の度合いによって、柱状電極の高さを増減さ
せ、応力緩和構造を有するモジュールを得ることができ
る。
(2) According to the second aspect of the present invention, since the element mounted by the face-down bonding is a surface acoustic wave element, a sufficient gap can be formed between the pattern and the wiring board. It is possible to perform accurate implementation. (3) According to the third to fifth aspects of the present invention, since the columnar electrodes are formed by plating, the columnar electrodes having an arbitrary height can be easily formed even on a wiring board using an inexpensive resin substrate. The height of the columnar electrode can be increased or decreased depending on the degree of stress generated between the element and the wiring board, and a module having a stress relaxation structure can be obtained.

【0026】(6)請求項6記載の発明によれば、柱状
電極と素子上のパッドとを超音波ボンディングを用いて
金バンプで接続するようにしたので、例えば、リフロー
などのような高温雰囲気に晒されることに不具合のある
素子においても、容易に本発明の素子実装構造が得ら
れ、素子と配線基板との間に生じる応力について応力緩
和構造を有するモジュールを得ることができる。
(6) According to the invention of claim 6, since the columnar electrode and the pad on the element are connected by the gold bump using the ultrasonic bonding, for example, a high temperature atmosphere such as a reflow is used. The element mounting structure of the present invention can be easily obtained even for an element having a problem of being exposed to the module, and a module having a stress relaxation structure for a stress generated between the element and the wiring board can be obtained.

【0027】(7)請求項7記載の発明によれば、柱状
電極を形成した後に、続いて接続部をめっき法で得るよ
うにしたので、素子上のパッドに対して、予め接続部と
なるバンプを形成する必要がなくなるので、素子へのバ
ンプ形成工程を省略でき、その結果、素子の歩留まりの
向上を図ることができる。
(7) According to the seventh aspect of the present invention, after the columnar electrode is formed, the connection portion is subsequently obtained by plating, so that the connection portion is formed in advance with respect to the pad on the element. Since there is no need to form a bump, a step of forming a bump on an element can be omitted, and as a result, the yield of the element can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1実施例を示す素子実装構造の製造
工程断面図である。
FIG. 1 is a sectional view showing a manufacturing process of an element mounting structure according to a first embodiment of the present invention.

【図2】本発明の第2実施例を示す素子実装構造の要部
製造工程断面図である。
FIG. 2 is a cross-sectional view of a main part manufacturing step of an element mounting structure according to a second embodiment of the present invention.

【図3】本発明の第3実施例を示す素子実装構造の要部
製造工程断面図である。
FIG. 3 is a cross-sectional view of a main part manufacturing step of an element mounting structure according to a third embodiment of the present invention.

【図4】従来の素子実装構造を示す図(その1)であ
る。
FIG. 4 is a diagram (part 1) showing a conventional device mounting structure.

【図5】従来の素子実装構造を示す図(その2)であ
る。
FIG. 5 is a diagram (part 2) showing a conventional element mounting structure.

【符号の説明】[Explanation of symbols]

1 配線基板 2 配線パターン 2A 電極 3 素子 4 パッド 5 バンプ 6 柱状電極 7 スルーホール 8 接続用パッド 9 給電用パターン 10 ドライフィルムレジスト 11 フォトマスク 12 柱状電極用レジスト 21 金バンプ 31 接続部(めっき法による) DESCRIPTION OF SYMBOLS 1 Wiring board 2 Wiring pattern 2A Electrode 3 Element 4 Pad 5 Bump 6 Column electrode 7 Through hole 8 Connection pad 9 Power supply pattern 10 Dry film resist 11 Photo mask 12 Column electrode resist 21 Gold bump 31 Connection part (by plating method) )

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】(a)配線基板の電極上に形成される柱状
電極と、(b)該柱状電極上に接続部を介してフェース
ダウンボンディングにより実装される素子とを具備する
ことを特徴とする素子実装構造。
1. A semiconductor device comprising: (a) a columnar electrode formed on an electrode of a wiring board; and (b) an element mounted on the columnar electrode by face-down bonding via a connection portion. Device mounting structure.
【請求項2】 請求項1記載の素子実装構造において、
前記フェースダウンボンディングにより実装される素子
が弾性表面波素子であることを特徴とする素子実装構
造。
2. The device mounting structure according to claim 1, wherein
An element mounting structure, wherein the element mounted by the face-down bonding is a surface acoustic wave element.
【請求項3】(a)配線基板上の電極に対してめっきレ
ジストを形成する工程と、(b)前記めっきレジストに
開口部を形成する工程と、(c)前記開口部に対してめ
っき法により柱状電極を形成する工程と、(d)前記め
っきレジストを除去する工程と、(e)フェースダウン
ボンディングにより前記柱状電極と素子上のパッドとを
接続させる工程とを施すことを特徴とする素子実装構造
の製造方法。
3. A step of: (a) forming a plating resist on an electrode on a wiring board; (b) forming an opening in the plating resist; and (c) plating the opening by plating. A step of forming a columnar electrode by the following steps: (d) a step of removing the plating resist; and (e) a step of connecting the columnar electrode and a pad on the element by face-down bonding. Manufacturing method of mounting structure.
【請求項4】 請求項3記載の素子実装構造の製造方法
において、前記素子上のパッドに設けられたバンプによ
って前記柱状電極と前記素子上のパッドとを電気的に接
続することを特徴とする素子実装構造の製造方法。
4. The method according to claim 3, wherein the columnar electrode and the pad on the element are electrically connected by a bump provided on the pad on the element. Manufacturing method of element mounting structure.
【請求項5】 請求項4記載の素子実装構造の製造方法
において、前記バンプをリフローによって接続すること
を特徴とする素子実装構造の製造方法。
5. The method for manufacturing an element mounting structure according to claim 4, wherein the bumps are connected by reflow.
【請求項6】 請求項4記載の素子実装構造の製造方法
において、前記バンプを金バンプとなし、超音波ボンデ
ィングを用いて接続することを特徴とする素子実装構造
の製造方法。
6. The method for manufacturing an element mounting structure according to claim 4, wherein said bumps are formed as gold bumps and connected using ultrasonic bonding.
【請求項7】 請求項3記載の素子実装構造の製造方法
において、前記柱状電極上にめっき法により形成した接
続部によって前記素子上のパッドと前記柱状電極とを電
気的に接続することを特徴とする素子実装構造の製造方
法。
7. The method for manufacturing an element mounting structure according to claim 3, wherein a pad on the element and the columnar electrode are electrically connected by a connection portion formed on the columnar electrode by a plating method. Manufacturing method of the element mounting structure.
JP30162397A 1997-11-04 1997-11-04 Element mounting construction and manufacture therefor Withdrawn JPH11145189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30162397A JPH11145189A (en) 1997-11-04 1997-11-04 Element mounting construction and manufacture therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30162397A JPH11145189A (en) 1997-11-04 1997-11-04 Element mounting construction and manufacture therefor

Publications (1)

Publication Number Publication Date
JPH11145189A true JPH11145189A (en) 1999-05-28

Family

ID=17899181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30162397A Withdrawn JPH11145189A (en) 1997-11-04 1997-11-04 Element mounting construction and manufacture therefor

Country Status (1)

Country Link
JP (1) JPH11145189A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007053395A (en) * 2006-10-16 2007-03-01 Oki Electric Ind Co Ltd Semiconductor device and method of manufacturing semiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007053395A (en) * 2006-10-16 2007-03-01 Oki Electric Ind Co Ltd Semiconductor device and method of manufacturing semiconductor device
JP4498336B2 (en) * 2006-10-16 2010-07-07 Okiセミコンダクタ株式会社 Semiconductor device and manufacturing method of semiconductor device

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