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JPH098220A - Multichip semiconductor device - Google Patents

Multichip semiconductor device

Info

Publication number
JPH098220A
JPH098220AJP7149217AJP14921795AJPH098220AJP H098220 AJPH098220 AJP H098220AJP 7149217 AJP7149217 AJP 7149217AJP 14921795 AJP14921795 AJP 14921795AJP H098220 AJPH098220 AJP H098220A
Authority
JP
Japan
Prior art keywords
chip
chips
semiconductor device
wiring board
terminals
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.)
Granted
Application number
JP7149217A
Other languages
Japanese (ja)
Other versions
JP2901518B2 (en
Inventor
Yoshitaka Umeki
義孝 梅木
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC CorpfiledCriticalNEC Corp
Priority to JP7149217ApriorityCriticalpatent/JP2901518B2/en
Publication of JPH098220ApublicationCriticalpatent/JPH098220A/en
Application grantedgrantedCritical
Publication of JP2901518B2publicationCriticalpatent/JP2901518B2/en
Anticipated expirationlegal-statusCritical
Expired - Lifetimelegal-statusCriticalCurrent

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Abstract

PURPOSE: To completely test semiconductor chips by only propagating signals between the semiconductor chips and leading out the signal terminal of the semiconductor chip which is not connected to solder balls to the surface of a package. CONSTITUTION: On a package in which solder balls 5 are formed in an array-like state as external terminals on the rear surface of a multilayered printed wiring board 3, two LSI chips 1A and 1B are fixed with epoxy resin 2, etc. A projecting section 7 made of the same material as that of the wiring board 3 is integrally erected from the peripheral section of the board 3. Most of the terminals of the chips 1A and 1B connect the wiring and through holes 4 of the wiring board 3 to the solder balls 5 with bonding wires 6, the terminals which are only used for the transmission of signals between the chips 1A and 1B are connected to electrode pads 9 on the projecting section 7. Therefore, all terminals can be tested even after the LSI chips 1a and 1B are sealed.

Description

Translated fromJapanese
【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、表面実装型パッケージ
の一種であるBGAパッケージを用いたマルチチップ半
導体装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-chip semiconductor device using a BGA package which is a type of surface mount type package.

【0002】[0002]

【従来の技術】従来より表面実装型多端子LSIパッケ
ージとしてQFP(Quad Flat Packag
e)がよく知られている。QFPはパッケージの四つの
側面すべてからリードピンが出ており、リードピンのピ
ン・ピッチは1.0mm,0.8mm,0.65mm,
0.5mm,0.4mm,0.3mmなどが採用されて
いる。近年のLSIの大規模化はピン数の増加を招き、
実装密度の向上をはかるべくQFPのピン・ピッチは狭
くなる傾向にあるが、QFPのピン・ピッチの微細化は
リード端子の変形等によりプリント基板への実装を困難
にしている。そこでこの問題を解決するパッケージとし
て、多層プリント基板の裏面に球状のハンダを取り付け
た表面実装型パッケージであるところのBGA(Bal
l Grid Array)が注目されてきた。以下B
GAパッケージを用いたマルチチップ半導体装置につい
て図2の断面図を用いて説明する。
2. Description of the Related Art Conventionally, a QFP (Quad Flat Package) has been used as a surface mount type multi-terminal LSI package.
e) is well known. QFP has lead pins protruding from all four sides of the package, and the lead pin pin pitch is 1.0 mm, 0.8 mm, 0.65 mm,
0.5 mm, 0.4 mm, 0.3 mm, etc. are adopted. In recent years, the scale-up of LSIs has led to an increase in the number of pins,
Although the pin pitch of the QFP tends to be narrowed in order to improve the packaging density, the miniaturization of the QFP pin pitch makes it difficult to mount it on a printed circuit board due to deformation of lead terminals. Therefore, as a package for solving this problem, a BGA (Bal) which is a surface mount type package in which spherical solder is attached to the back surface of a multilayer printed circuit board.
1 Grid Array) has received attention. Below B
A multi-chip semiconductor device using a GA package will be described with reference to the sectional view of FIG.

【0003】小さな両面プリント配線基板3上に複数の
半導体(LSI)チップ1を搭載し、ボンディングワイ
ヤ6で基板配線と接続する。両面基板3の上面では、ソ
ルダ・レジスト10に覆われた配線が中央から端部に向
って走り、それからスルーホール4を経由して基板底面
へ移る。そして底面の端部から中央に向かって配線が走
り、ハンダ・ボール5へと至る。LSIチップ1はモー
ルド樹脂11等で封止される。端子である球状のハンダ
5は2次元のアレイ状に並ぶので、端子ピッチをQFP
よりもずっと広くとることができる。従って多ピンLS
Iのパッケージとしては、ピン・ピッチにおいても、外
形寸法においても、QFPよりBGAの方が有利といえ
る。
A plurality of semiconductor (LSI) chips 1 are mounted on a small double-sided printed wiring board 3 and are connected to board wiring by bonding wires 6. On the upper surface of the double-sided board 3, the wiring covered with the solder resist 10 runs from the center toward the end, and then moves to the bottom surface of the board through the through hole 4. Then, the wiring runs from the end portion of the bottom surface toward the center and reaches the solder ball 5. The LSI chip 1 is sealed with a mold resin 11 or the like. Since the spherical solders 5 which are terminals are arranged in a two-dimensional array, the terminal pitch is QFP.
Can be much wider than Therefore, multi-pin LS
As for the I package, BGA is more advantageous than QFP in terms of pin pitch and external dimensions.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上述し
たマルチチップ半導体装置においては、BGAパッケー
ジに搭載されている各LSIの入・出力端子はそのすべ
てが外部端子としてハンダ・ボール5に接続されるもの
ではない。例えば、第1のLSIチップと第2のLSI
チップとの信号の伝搬のみに用いられる信号端子は外部
端子として取り出す必要がないため、ユーザの要求等特
別の場合以外はハンダ・ボールには接続されない。すな
わち、第1及び第2のLSIチップ間の信号の伝搬のみ
に用いられる端子はプリント基板の配線により接続され
るが、ハンダ・ボールには接続されていない。このこと
は、2つのLSIチップがBGAパッケージ上に搭載さ
れた後において、チップ間の伝搬のみに用いられる信号
のテストを不可能にする。この為マルチチップ半導体装
置においては、搭載されたLSIの不良品を完全には除
去できないという欠点があった。
However, in the above-mentioned multi-chip semiconductor device, all the input / output terminals of each LSI mounted on the BGA package are connected to the solder balls 5 as external terminals. is not. For example, the first LSI chip and the second LSI
Since it is not necessary to take out a signal terminal used only for signal propagation with the chip as an external terminal, it is not connected to the solder ball except for special cases such as user's request. That is, the terminals used only for signal propagation between the first and second LSI chips are connected by the wiring of the printed circuit board, but are not connected to the solder balls. This makes it impossible to test signals used only for propagation between chips after the two LSI chips are mounted on the BGA package. Therefore, the multi-chip semiconductor device has a drawback in that defective products of the mounted LSI cannot be completely removed.

【0005】本発明の目的は、搭載された半導体チップ
のテストを完全に行うことのできるマルチチップ半導体
装置を提供することにある。
It is an object of the present invention to provide a multi-chip semiconductor device capable of completely testing a mounted semiconductor chip.

【0006】[0006]

【課題を解決するための手段】本発明のマルチチップ半
導体装置は、プリント配線基板の裏面に外部端子として
のハンダ・ボールが形成されたBGAパッケージ上に複
数の半導体チップを搭載したマルチチップ半導体装置に
おいて、前記半導体チップ間のみで信号の伝搬を行ない
かつ前記ハンダ・ボールに接続されていない前記半導体
チップの信号端子を前記パッケージの表面に取り出した
ことを特徴とするものである。
A multi-chip semiconductor device according to the present invention is a multi-chip semiconductor device in which a plurality of semiconductor chips are mounted on a BGA package in which solder balls as external terminals are formed on the back surface of a printed wiring board. The signal terminal of the semiconductor chip which propagates signals only between the semiconductor chips and is not connected to the solder balls is taken out to the surface of the package.

【0007】[0007]

【実施例】次に、本発明の実施例について図面を参照し
て説明する。図1は本発明の一実施例の断面図である。
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an embodiment of the present invention.

【0008】図1において、多層のプリント配線基板3
の裏面に外部端子としてのハンダ・ボール5がアレイ状
に形成されてなるBGAパッケージ上には、2個のLS
Iチップ1A,1Bがエポキシ樹脂2等により固着され
ている。そしてプリント配線基板3の周辺部にはプリン
ト配線基板3と同じ材料でかつプリント配線基板3と一
体的に形成された凸部7が設けられている。LSIチッ
プ1A,1Bの大部分の端子はボンディングワイヤ6に
よりプリント配線基板3の配線とスルーホール4内の導
体を介してハンダ・ボール5に接続されている。そし
て、特にLSIチップ1A,1B間の信号の伝搬のみに
用いられる端子は、基板内の配線と凸部7に設けられた
スルーホール4A中の導体を介し凸部7上に設けられた
電極パッド8に接続されている。尚図1において9はL
SIチップ1A,1Bを封止するキャップである。
In FIG. 1, a multilayer printed wiring board 3 is provided.
Two LSs are mounted on the BGA package in which the solder balls 5 as external terminals are formed in an array on the back surface of the
The I chips 1A and 1B are fixed by an epoxy resin 2 or the like. Around the periphery of the printed wiring board 3, there is provided a convex portion 7 made of the same material as the printed wiring board 3 and integrally formed with the printed wiring board 3. Most terminals of the LSI chips 1A and 1B are connected to the solder balls 5 by the bonding wires 6 via the wiring of the printed wiring board 3 and the conductors in the through holes 4. In particular, the terminal used only for signal propagation between the LSI chips 1A and 1B is an electrode pad provided on the convex portion 7 via the wiring in the substrate and the conductor in the through hole 4A provided in the convex portion 7. 8 is connected. In FIG. 1, 9 is L
It is a cap that seals the SI chips 1A and 1B.

【0009】このように構成された実施例においては、
ハンダ・ボール5に接続する必要のないLSIチップ1
A,1Bの端子をパッケージの表面の電極パッド8に接
続してある為、LSIチップを封止した後においてもこ
れらの端子を含むLSIチップ1A,1Bの全ての端子
のテストを行うことができる。従って不良のLSIチッ
プを搭載したマルチチップ半導体装置を完全に除去する
ことができる。
In the embodiment configured as above,
LSI chip 1 that does not need to be connected to solder ball 5
Since the terminals A and 1B are connected to the electrode pads 8 on the surface of the package, all terminals of the LSI chips 1A and 1B including these terminals can be tested even after the LSI chip is sealed. . Therefore, it is possible to completely remove the multi-chip semiconductor device mounted with the defective LSI chip.

【0010】尚、上記実施例においては凸部7をプリン
ト配線基板3と同じ材料で形成した場合について説明し
たが、これに限定されるものではなく、スルーホール及
び導体を形成できる樹脂やセラミック等からなる絶縁材
料を用いてもよい。又パッケージ封止にキャップ9を用
いたがモールド樹脂を用いてもよい。
In the above embodiment, the case where the convex portion 7 is formed of the same material as the printed wiring board 3 has been described. You may use the insulating material which consists of. Although the cap 9 is used for sealing the package, a mold resin may be used.

【0011】[0011]

【発明の効果】以上説明したように本発明は、プリント
配線基板端部の凸部にスルーホールと電極パッドを設
け、ハンダ・ボールに接続されていないLSIの端子を
接続することにより、BGAパッケージに搭載された半
導体チップのテストを完全に行うことができる為、不良
のマルチチップ半導体装置を完全に除去できるという効
果を有する。
As described above, according to the present invention, a through hole and an electrode pad are provided on the convex portion at the end of the printed wiring board, and the terminals of the LSI not connected to the solder balls are connected to the BGA package. Since the semiconductor chip mounted on the semiconductor device can be completely tested, the defective multi-chip semiconductor device can be completely removed.

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

【図1】本発明の一実施例の断面図。FIG. 1 is a sectional view of an embodiment of the present invention.

【図2】従来のマルチチップ半導体装置の断面図。FIG. 2 is a sectional view of a conventional multi-chip semiconductor device.

【符号の説明】[Explanation of symbols]

1A,1B LSIチップ 2 エポキシ樹脂 3 プリント配線基板 4,4A スルーホール 5 ハンダ・ボール 6 ボンディングワイヤ 7 凸部 8 電極パッド 9 キャップ 10 ソルダ・レジスト 11 モールド樹脂 1A, 1B LSI chip 2 Epoxy resin 3 Printed wiring board 4, 4A Through hole 5 Solder ball 6 Bonding wire 7 Convex portion 8 Electrode pad 9 Cap 10 Solder resist 11 Mold resin

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 H01L 23/538Continuation of front page (51) Int.Cl.6 Identification code Office reference number FI technical display location H01L 23/538

Claims (5)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】 プリント配線基板の裏面に外部端子とし
てのハンダ・ボールが形成されたBGAパッケージ上に
複数の半導体チップを搭載したマルチチップ半導体装置
において、前記半導体チップ間のみで信号の伝搬を行な
いかつ前記ハンダ・ボールに接続されていない前記半導
体チップの信号端子を前記パッケージの表面に取り出し
たことを特徴とするマルチチップ半導体装置。
1. In a multi-chip semiconductor device in which a plurality of semiconductor chips are mounted on a BGA package having solder balls as external terminals formed on the back surface of a printed wiring board, signals are propagated only between the semiconductor chips. A multi-chip semiconductor device characterized in that the signal terminal of the semiconductor chip not connected to the solder ball is taken out on the surface of the package.
【請求項2】 プリント配線基板には周辺部を囲む凸部
が形成されている請求項1記載のマルチチップ半導体装
置。
2. The multi-chip semiconductor device according to claim 1, wherein the printed wiring board is provided with a convex portion surrounding a peripheral portion.
【請求項3】 凸部はプリント配線基板と同一材料又は
セラミックから構成されている請求項2記載のマルチチ
ップ半導体装置。
3. The multi-chip semiconductor device according to claim 2, wherein the convex portion is made of the same material as the printed wiring board or ceramic.
【請求項4】 半導体チップはキャップ又は樹脂により
封止されている請求項1記載のマルチチップ半導体装
置。
4. The multi-chip semiconductor device according to claim 1, wherein the semiconductor chip is sealed with a cap or a resin.
【請求項5】 ハンダボールに接続されていない半導体
チップの信号端子は、凸部に形成されたスルーホール中
の導体を介して凸部上の電極パッドに接続されている請
求項2記載のマルチチップ半導体装置。
5. The multi according to claim 2, wherein the signal terminals of the semiconductor chip which are not connected to the solder balls are connected to the electrode pads on the protrusions through the conductors in the through holes formed in the protrusions. Chip semiconductor device.
JP7149217A1995-06-151995-06-15 Multi-chip semiconductor deviceExpired - LifetimeJP2901518B2 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP7149217AJP2901518B2 (en)1995-06-151995-06-15 Multi-chip semiconductor device

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP7149217AJP2901518B2 (en)1995-06-151995-06-15 Multi-chip semiconductor device

Publications (2)

Publication NumberPublication Date
JPH098220Atrue JPH098220A (en)1997-01-10
JP2901518B2 JP2901518B2 (en)1999-06-07

Family

ID=15470419

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP7149217AExpired - LifetimeJP2901518B2 (en)1995-06-151995-06-15 Multi-chip semiconductor device

Country Status (1)

CountryLink
JP (1)JP2901518B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6674160B1 (en)1999-03-182004-01-06Nec Electronics CorporationMulti-chip semiconductor device
US7087455B2 (en)2003-01-292006-08-08Matsushita Electric Industrial Co., Ltd.Semiconductor device and manufacturing method for the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5791586A (en)*1980-11-291982-06-07Tokyo Shibaura Electric CoHybrid integrated circuit device
JPS57124456A (en)*1981-01-261982-08-03Mitsubishi Electric CorpSemiconductor device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5791586A (en)*1980-11-291982-06-07Tokyo Shibaura Electric CoHybrid integrated circuit device
JPS57124456A (en)*1981-01-261982-08-03Mitsubishi Electric CorpSemiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US6674160B1 (en)1999-03-182004-01-06Nec Electronics CorporationMulti-chip semiconductor device
US7087455B2 (en)2003-01-292006-08-08Matsushita Electric Industrial Co., Ltd.Semiconductor device and manufacturing method for the same

Also Published As

Publication numberPublication date
JP2901518B2 (en)1999-06-07

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