JPH05226487A - Semiconductor device - Google Patents

Semiconductor device

Info

Publication number
JPH05226487A
JPH05226487A JP4059246A JP5924692A JPH05226487A JP H05226487 A JPH05226487 A JP H05226487A JP 4059246 A JP4059246 A JP 4059246A JP 5924692 A JP5924692 A JP 5924692A JP H05226487 A JPH05226487 A JP H05226487A
Authority
JP
Japan
Prior art keywords
cap
lsi chip
wiring board
solder
semiconductor device
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
Application number
JP4059246A
Other languages
Japanese (ja)
Inventor
Kenji Kobayashi
健治 小林
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 Corp filed Critical NEC Corp
Priority to JP4059246A priority Critical patent/JPH05226487A/en
Priority to US08/016,938 priority patent/US5311402A/en
Priority to CA002089435A priority patent/CA2089435C/en
Publication of JPH05226487A publication Critical patent/JPH05226487A/en
Pending 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
    • H01L2224/73Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732Location after the connecting process
    • H01L2224/73251Location after the connecting process on different surfaces
    • H01L2224/73253Bump and layer connectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/161Cap
    • H01L2924/1615Shape
    • H01L2924/16152Cap comprising a cavity for hosting the device, e.g. U-shaped cap

Landscapes

  • Wire Bonding (AREA)

Abstract

PURPOSE:To keep a gap between an LSI chip and a cap uniform by a method wherein a U-shaped groove is provided to a wiring board so as to confront the opening edge of the cap, the opening edge of the cap is joined to the U-shaped groove through the intermediary of solder, and the part of the opening edge of the cap inserted into the U-shaped groove is adjusted in length. CONSTITUTION:An LSI chip 1 is mounted on a wiring board 2, where bump-like external connection terminals 21 are joined to LSI connecting pads 24 with solder 22. Keeping the LSI chip 1 in this state, the LSI chip 1 is hermetically sealed up with a cap 9 put on it, where a U-shaped groove 26 is provided to the wiring board 2 at a joint where they are joined together, and solder 27 is filled into the groove 26 to provide a solder pool. The edge of the cap 9 inserted into the solder pool is varied in length, whereby the inclination and height dispersion of the LSI chip 1 and the depth dispersion of the cap 9 can be absorbed. Therefore, adhesive agent filled between an LSI chip and a cap cart be easily controlled in amount, and a chip carrier is improved in reliability.

Description

【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、LSIチップに気密封
止用キャップが被冠された半導体装置に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor device in which an LSI chip is covered with a hermetically sealing cap.

【0002】[0002]

【従来の技術】従来のこの種の半導体装置としては、図
6に示すように構成されたものがある。図6は従来の半
導体装置を示す断面図で、同図に示す半導体装置はIEIC
E TRANSACTIONS.(VOL.E74,NO.8,P2333,AUGUST 199
1)に掲載されたものである。
2. Description of the Related Art As a conventional semiconductor device of this type, there is one having a structure as shown in FIG. FIG. 6 is a cross-sectional view showing a conventional semiconductor device. The semiconductor device shown in FIG. 6 is IEIC.
E TRANSACTIONS. (VOL.E74, NO.8, P2333, AUGUST 199
It was published in 1).

【0003】図6において、1はTAB LSIチップ
で、このLSIチップ1はフェイスダウンで配線基板2
上に実装されている。なお、3はTABリードを示す。
4は前記LSIチップ1と配線基板2との間に介装され
たシリコンラバーである。
In FIG. 6, reference numeral 1 is a TAB LSI chip, and this LSI chip 1 is a face-down wiring board 2
Implemented on. In addition, 3 shows a TAB lead.
Reference numeral 4 is a silicon rubber interposed between the LSI chip 1 and the wiring board 2.

【0004】5は前記LSIチップ1を気密封止するた
めのキャップで、このキャップ5は開口縁部が前記配線
基板2側にシーム溶接されている。なお、このキャップ
5の内側底部はLSIチップ1の上面に接着されてい
る。
Reference numeral 5 denotes a cap for hermetically sealing the LSI chip 1. The opening edge of the cap 5 is seam-welded to the wiring board 2 side. The inner bottom of the cap 5 is bonded to the upper surface of the LSI chip 1.

【0005】この半導体装置では、配線基板2に実装さ
れた状態でのLSIチップ1の高さ方向寸法のばらつき
や傾きは、シリコンラバー4をLSIチップ1と配線基
板2との間に緩衝材として介在させることで吸収してい
た。
In this semiconductor device, when the LSI chip 1 mounted on the wiring board 2 has a variation in the dimension in the height direction or an inclination, the silicon rubber 4 is used as a cushioning material between the LSI chip 1 and the wiring board 2. It was absorbed by intervening.

【0006】図6に示した半導体装置はLSIチップ1
がTABリード3を介して配線基板2に接続されていた
が、フェイスダウンでLSIチップを実装する半導体装
置としては図7に示すように構成されたものもある。
The semiconductor device shown in FIG. 6 is an LSI chip 1
Was connected to the wiring board 2 via the TAB lead 3, but there is also a semiconductor device configured as shown in FIG. 7 in which the LSI chip is mounted face down.

【0007】図7はフリップチップ実装方式の従来の半
導体装置の一部を拡大して示す断面図である。図7に示
した半導体装置は、第41回ECTC論文集1991年
(P704)に掲載されたものである。同図において前
記図6で説明したものと同一もしくは同等部材について
は、同一符号を付し詳細な説明は省略する。図7に示す
半導体装置では、LSIチップ1は、半田バンプ6によ
り配線基板2上に設けられた薄膜7上のパッド8に接続
されている。
FIG. 7 is an enlarged sectional view showing a part of a conventional semiconductor device of flip chip mounting type. The semiconductor device shown in FIG. 7 was published in the 41st ECTC paper collection 1991 (P704). In the figure, the same or equivalent members as those described in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted. In the semiconductor device shown in FIG. 7, the LSI chip 1 is connected to the pads 8 on the thin film 7 provided on the wiring board 2 by the solder bumps 6.

【0008】そして、AlNキャップ9を配線基板2に
半田10を介して半田付けすることによりLSIチップ
1が気密封止されている。この半導体装置では、実装後
のLSIチップ1の高さ寸法のばらつきを吸収する方法
として、LSIチップ1を載せた後の高さに合うような
キャップ9を使用していた。
The LSI chip 1 is hermetically sealed by soldering the AlN cap 9 to the wiring board 2 via the solder 10. In this semiconductor device, a cap 9 that fits the height after mounting the LSI chip 1 is used as a method of absorbing the variation in the height dimension of the LSI chip 1 after mounting.

【0009】[0009]

【発明が解決しようとする課題】図6に示した従来の半
導体装置ではシリコンラバー4を使用することによって
キャップ5とLSIチップ1との間の接着厚を一定にし
ていたが、近年のLSIチップの信号数の増加に伴い、
バンプを介してLSIチップの面全体から信号を取出す
ようなフリップチップ実装や、入出力用の微小ピンを介
してLSIチップの面全体から信号を取出す実装構造を
採用しようとすると、シリコンラバーのような弾性体で
LSIチップ下面から接続部を保護することが不可能と
なる。
In the conventional semiconductor device shown in FIG. 6, the adhesive thickness between the cap 5 and the LSI chip 1 is made constant by using the silicon rubber 4, but recent LSI chips have been used. As the number of signals in
Flip-chip mounting that picks up signals from the entire surface of the LSI chip via bumps, or mounting structure that picks up signals from the entire surface of the LSI chip via minute pins for input / output makes it look like silicon rubber. It becomes impossible to protect the connection part from the lower surface of the LSI chip by using such an elastic body.

【0010】そのような不具合は図7に示したようにL
SIチップ実装後にキャップ9の選別を行なうことによ
ってキャップ9とLSIチップ1との接着厚を一定にす
ればよい。ところが、図7に示した構造では、キャップ
9を複数種類形成しておかなければならず、コスト,歩
留りの悪化につながるという問題がある。
Such a problem is caused by L
The bonding thickness between the cap 9 and the LSI chip 1 may be made constant by selecting the cap 9 after mounting the SI chip. However, in the structure shown in FIG. 7, it is necessary to form a plurality of types of caps 9, which causes a problem of cost and yield deterioration.

【0011】キャップ高さとLSIチップ実装高さの調
整を行なわないと、図8に示す配線基板2からキャップ
9の内側底部(内壁)までの高さHのばらつきは±0.
03mm程度あり、前記配線基板2からフェイスダウン実
装されているLSIチップ1上面までの高さhのばらつ
きは±0.05mmあるため、LSIチップ1とキャップ
9とを接着する接着剤11の厚みは最低厚0.03mmと
すると0.03〜0.21mmとばらつくことになる。な
お、図8はキャップの寸法を変えない場合の従来の半導
体装置の一部を拡大して示す断面図である。
Unless the cap height and the LSI chip mounting height are adjusted, the variation in the height H from the wiring board 2 to the inner bottom portion (inner wall) of the cap 9 shown in FIG. 8 is ± 0.
Since the height h from the wiring board 2 to the upper surface of the LSI chip 1 mounted face down is ± 0.05 mm, the thickness of the adhesive 11 for bonding the LSI chip 1 and the cap 9 is about 0.3 mm. If the minimum thickness is 0.03 mm, it will vary from 0.03 to 0.21 mm. Note that FIG. 8 is an enlarged cross-sectional view showing a part of the conventional semiconductor device when the size of the cap is not changed.

【0012】接着剤11が厚くなると、発熱源であるL
SIチップ1から放熱面となるキャップ9の上面までの
熱抵抗が増加し、冷却効果が低下するという問題が生じ
る。また、接着剤11が厚くなると接着剤11中のボイ
ド除去が困難となり、熱抵抗の増加、熱ストレスによる
クラックの発生等、信頼性,品質も劣るという問題もあ
る。
As the adhesive 11 becomes thicker, the heat source L
There is a problem that the thermal resistance from the SI chip 1 to the upper surface of the cap 9 which is the heat dissipation surface increases, and the cooling effect decreases. Further, when the adhesive 11 becomes thick, it becomes difficult to remove voids in the adhesive 11, and there is a problem that reliability and quality are poor, such as an increase in thermal resistance and the occurrence of cracks due to thermal stress.

【0013】[0013]

【課題を解決するための手段】本発明に係る半導体装置
は、配線基板側におけるキャップの開口縁と対向する部
位にキャップの開口縁部が臨む凹溝を設け、この凹溝
に、キャップの開口縁部を半田を介して接合させたもの
である。
A semiconductor device according to the present invention is provided with a recess groove facing the opening edge of the cap on the wiring board side, and the opening edge of the cap faces the opening groove of the cap. The edges are joined via solder.

【0014】[0014]

【作用】キャップの開口縁部を凹溝内に挿入させる寸法
を変えることによって、LSIチップとキャップとの間
の間隔が変わるから、LSIチップの実装高さや傾きが
吸収される。
The gap between the LSI chip and the cap is changed by changing the dimension for inserting the opening edge of the cap into the concave groove, so that the mounting height and inclination of the LSI chip are absorbed.

【0015】[0015]

【実施例】以下、本発明の一実施例を図1および図2に
よって詳細に説明する。図1は本発明に係る半導体装置
の断面図、図2は本発明に係る半導体装置の要部を拡大
して示す断面図である。これらの図において前記図6な
いし図8で説明したものと同一もしくは同等部材につい
ては、同一符号を付し詳細な説明は省略する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a sectional view of a semiconductor device according to the present invention, and FIG. 2 is an enlarged sectional view showing a main part of the semiconductor device according to the present invention. In these figures, the same or equivalent members as those described in FIGS. 6 to 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

【0016】図1および図2に示す半導体装置は、LS
Iチップ1のバンプ状外部接続端子21が半田22を介
して配線基板2にフェイスダウンで実装されている。配
線基板2は、内部にW,Ag−Pd等の導体配線23を
有し、表面にはLSIチップ1のバンプ状外部接続端子
21と電気的に接続されるLSI接続用パッド24が設
けられ、裏面には不図示のMLS(Multi-Layer Substr
ate)等に接続される外部接続端子25が設けられてい
る。
The semiconductor device shown in FIG. 1 and FIG.
The bump-shaped external connection terminals 21 of the I chip 1 are mounted face down on the wiring board 2 via the solder 22. The wiring board 2 has conductor wirings 23 such as W and Ag-Pd inside, and an LSI connection pad 24 that is electrically connected to the bump-shaped external connection terminals 21 of the LSI chip 1 is provided on the surface. MLS (Multi-Layer Substr) not shown on the back
ate) and the like are provided with external connection terminals 25.

【0017】また、前記配線基板2におけるキャップ9
の開口縁と対向する部位には、キャップ9の開口縁部が
全周にわたって臨む凹溝26が形成されている。この凹
溝26内には半田27が充填されている。
The cap 9 on the wiring board 2 is also provided.
A concave groove 26 is formed at a portion facing the opening edge of the cap 9 so that the opening edge of the cap 9 faces the entire circumference. Solder 27 is filled in the groove 26.

【0018】そして、前記凹溝26内に開口縁部を臨ま
せてキャップ9が半田付けされており、LSIチップ1
が気密封止されている。なお、本実施例で使用するキャ
ップ9は、放熱性の高い材質、例えばCu/W、AlN
などによって有底角筒状に形成されている。また、LS
Iチップ1はキャップ9に熱伝導性の高い接着剤28
(例えば80Au/20Sn半田)等により十分に固着
されている。
The cap 9 is soldered with the opening edge facing the inside of the groove 26.
Is hermetically sealed. The cap 9 used in this embodiment is made of a material having a high heat dissipation property, such as Cu / W or AlN.
It is formed in a bottomed rectangular tube shape. Also, LS
The I-chip 1 has an adhesive 28 with high thermal conductivity on the cap 9.
(For example, 80Au / 20Sn solder) is sufficiently fixed.

【0019】前記凹溝26の寸法は、図2に示すよう
に、例えばキャップ9の側壁9aの厚みaを0.2mmと
すると、凹溝26の開口幅bは0.3mm,深さcは0.
3mm程度にするのが適当である。なお、深さcは、キャ
ップ9とLSIチップ1の隙間dより大きく設定されて
いる。
As shown in FIG. 2, if the thickness a of the side wall 9a of the cap 9 is 0.2 mm, the opening width b of the groove 26 is 0.3 mm and the depth c is 0.
It is suitable to set it to about 3 mm. The depth c is set larger than the gap d between the cap 9 and the LSI chip 1.

【0020】LSIチップ1は、バンプ状外部接続端子
21とLSI接続用パッド24が半田22を介して半田
付けされることにより配線基板2上に実装される。この
とき、LSIチップ1の厚みや半田22での相互間の半
田量のばらつき、あるいは各バンプ状外部接続端子21
の形状や寸法の相違などによって、LSIチップ1が傾
いた状態で高さ方向寸法のばらつきが生じる。また、キ
ャップ9の寸法にもばらつきがある。
The LSI chip 1 is mounted on the wiring board 2 by soldering the bump-shaped external connection terminals 21 and the LSI connection pads 24 via the solder 22. At this time, variations in the thickness of the LSI chip 1, the amount of solder between the solders 22, or the bump-shaped external connection terminals 21
Due to the difference in shape and size, the LSI chip 1 inclines in the dimension in the height direction. Moreover, the dimensions of the cap 9 also vary.

【0021】この状態でLSIチップ1上にキャップ9
を被せて気密封止するのであるが、配線基板2のキャッ
プ9との接合部に凹溝26を形成しその中に半田27を
充填して半田プールを設けてあるので、この半田プール
内に臨むキャップ9の量を変えることによって高さ方向
のばらつきやLSIチップ1の傾き,キャップ深さのば
らつき等を吸収することが可能となる。
In this state, the cap 9 is placed on the LSI chip 1.
However, since the groove 26 is formed in the joint portion of the wiring board 2 with the cap 9 and the solder 27 is filled in the groove 26 to form a solder pool, the solder pool is provided in the solder pool. By changing the amount of the exposed cap 9, it is possible to absorb variations in the height direction, inclination of the LSI chip 1, variations in the cap depth, and the like.

【0022】これによりLSIチップ1とキャップ9と
の間に均一な狭いギャップが得られる。そのギャップ
(LSIチップ1とキャップ9との間隔)に接着剤28
を均一に充填することで、発熱源であるLSIチップ1
から放熱面となるキャップ9の上面までの熱抵抗の増加
が防止できる。また、接着剤28中のボイド発生や密着
不良も減少する。
As a result, a uniform narrow gap can be obtained between the LSI chip 1 and the cap 9. Adhesive 28 is provided in the gap (distance between the LSI chip 1 and the cap 9).
Is uniformly filled to generate heat from the LSI chip 1
It is possible to prevent an increase in thermal resistance from to the upper surface of the cap 9 which is a heat dissipation surface. In addition, the occurrence of voids in the adhesive 28 and poor adhesion are also reduced.

【0023】本発明に係る半導体装置を組立てるには、
先ず、LSIチップ1を配線基板2上にAu/Snなど
の高温半田で半田付けし、次に、Sn/Pb共晶半田を
使用してLSIチップ1をキャップ9で封止する。そし
て、このようにして組立てられたチップキャリアをML
S(図示せず)等に実装する。そのときには、In系の
低融点半田を用いて外部接続端子25をMLSに半田付
けして行なう。
To assemble the semiconductor device according to the present invention,
First, the LSI chip 1 is soldered onto the wiring board 2 with high-temperature solder such as Au / Sn, and then the LSI chip 1 is sealed with the cap 9 using Sn / Pb eutectic solder. Then, the chip carrier assembled in this way is ML
It is mounted on S (not shown) or the like. At that time, the external connection terminal 25 is soldered to the MLS using an In-based low melting point solder.

【0024】なお、本実施例では凹溝26を配線基板2
に直接形成した例を示したが、図3に示すように配線基
板上に凹溝部材を固着させるようにしてもよい。図3は
凹溝を配線基板とは別体の部材に形成した他の実施例を
示す断面図である。同図において前記図1および図2で
説明したものと同一もしくは同等部材については、同一
符号を付し詳細な説明は省略する。
In this embodiment, the concave groove 26 is formed in the wiring board 2.
Although the example in which the groove member is directly formed is shown in FIG. 3, the groove member may be fixed on the wiring substrate as shown in FIG. FIG. 3 is a sectional view showing another embodiment in which the groove is formed in a member separate from the wiring board. In the figure, the same or equivalent members as those described in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

【0025】図3において、31は金属枠で、この金属
枠31は平面視ロ字状に形成されており、その上面には
凹溝26が全周にわたって設けられている。そして、こ
の金属枠31は配線基板2におけるキャップ9の開口縁
と対向する部位に銀ろう32などを介して固着されてい
る。この金属枠31の凹溝26に半田27が充填されて
半田プールが設けられている。
In FIG. 3, reference numeral 31 denotes a metal frame, which is formed in a square V shape in plan view, and a groove 26 is provided on the entire upper surface of the metal frame 31. The metal frame 31 is fixed to a portion of the wiring board 2 facing the opening edge of the cap 9 with silver solder 32 or the like. The concave groove 26 of the metal frame 31 is filled with solder 27 to provide a solder pool.

【0026】配線基板2に凹溝を設けることが困難な場
合は、本実施例の手法を採ることができる。すなわち、
本実施例では金属枠31を取付けることによって半田プ
ールを形成できるので、配線基板2に対しては特別な加
工を必要としないというメリットがある。
If it is difficult to provide the groove on the wiring board 2, the method of this embodiment can be adopted. That is,
In this embodiment, since the solder pool can be formed by attaching the metal frame 31, there is an advantage that no special processing is required for the wiring board 2.

【0027】また、上述した各実施例では、LSIチッ
プ1をフェイスダウンで実装するに当たりバンプ状外部
接続端子21を使用した例を示したが、本発明は図4に
示すように微小ピンを使用した半導体装置にも、図5に
示すようにTABリードを使用した半導体装置にも適用
することもできる。
In each of the above-described embodiments, the bump-shaped external connection terminals 21 are used for mounting the LSI chip 1 face down, but the present invention uses minute pins as shown in FIG. The present invention can be applied to the above semiconductor device as well as to the semiconductor device using the TAB lead as shown in FIG.

【0028】図4は微小ピンを使用した他の半導体装置
の例を示す断面図、図5はTABリードを使用した他の
半導体装置の例を示す断面図である。これらの図におい
て前記図1ないし図3で説明したものと同一もしくは同
等部材については、同一符号を付し詳細な説明は省略す
る。
FIG. 4 is a sectional view showing an example of another semiconductor device using a minute pin, and FIG. 5 is a sectional view showing an example of another semiconductor device using a TAB lead. In these figures, the same or equivalent members as those described in FIGS. 1 to 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

【0029】図4において33は微小ピンで、この微小
ピン33はLSIチップ1の表面電極34上に立設され
ており、先端が配線基板2のLSI接続用パッド24に
半田22を介して半田付けされている。この微小ピン3
3の寸法としては、例えば直径0.1mm,長さ2mmとさ
れている。
In FIG. 4, reference numeral 33 denotes a minute pin, which is erected on the surface electrode 34 of the LSI chip 1 and whose tip is soldered to the LSI connecting pad 24 of the wiring board 2 via the solder 22. It is attached. This small pin 3
The dimensions of 3 are, for example, 0.1 mm in diameter and 2 mm in length.

【0030】このように微小ピン33を使用してLSI
チップ1を配線基板2に実装することにより、LSIチ
ップ1(例えばSiで熱膨張係数3/℃)とそれを実装
する配線基板2(例えばAl23で熱膨張係数6.7/
℃)との熱膨張係数の差を吸収することができ、多種材
料の配線基板2(チップキャリア基板)に実装すること
が可能となる。
Thus, by using the minute pins 33, the LSI
By mounting the chip 1 on the wiring board 2, the LSI chip 1 (for example, Si has a thermal expansion coefficient of 3 / ° C.) and the wiring board 2 on which it is mounted (for example, Al 2 O 3 has a thermal expansion coefficient of 6.7 / ° C.).
C.) and the difference in the coefficient of thermal expansion can be absorbed, and it becomes possible to mount on the wiring substrate 2 (chip carrier substrate) made of various materials.

【0031】図5において35はTAB LSIチッ
プ、36はリードである。LSIチップ35は、リード
36が配線基板2のLSI接続用パッド24に接続(例
えばAu−Au熱圧着)されることにより配線基板2上
に実装されている。このとき、LSIチップ35の厚み
やリード36成形時のばらつきによりLSIチップ35
実装後の高さのばらつきや傾きが発生する。
In FIG. 5, reference numeral 35 is a TAB LSI chip, and 36 is a lead. The LSI chip 35 is mounted on the wiring board 2 by connecting the leads 36 to the LSI connection pads 24 of the wiring board 2 (for example, Au-Au thermocompression bonding). At this time, due to the thickness of the LSI chip 35 and variations in molding the leads 36, the LSI chip 35
After mounting, height variation and tilt occur.

【0032】ここで、従来は図6に示したようにシリコ
ンラバーをTAB LSIチップと配線基板の間に緩衝
材として介入させ、TAB LSIチップ実装時の高さ
方向寸法のばらつきと傾きを吸収していたが、ここでは
配線基板2、あるいは、配線基板2上の凹溝付き金属枠
(図示せず)に半田プールを設けてTAB LSIチッ
プ35が気密封止されるため、TAB LSIチップ3
5実装時の高さのばらつきや傾き,キャップ深さのばら
つきが吸収される。すなわち、従来使用していたシリコ
ンラバーが不必要となる。
Here, conventionally, as shown in FIG. 6, silicon rubber is used as a cushioning material between the TAB LSI chip and the wiring board to absorb the variation in the height direction and the inclination when the TAB LSI chip is mounted. However, here, since the TAB LSI chip 35 is hermetically sealed by providing a solder pool on the wiring board 2 or a metal frame (not shown) with a groove on the wiring board 2, the TAB LSI chip 3
5 Height variations and tilts during mounting, and variations in cap depth are absorbed. That is, the silicon rubber conventionally used is unnecessary.

【0033】[0033]

【発明の効果】以上説明したように本発明に係る半導体
装置は、配線基板側におけるキャップの開口縁と対向す
る部位にキャップの開口縁部が臨む凹溝を設け、この凹
溝に、キャップの開口縁部を半田を介して接合させたた
め、キャップの開口縁部を凹溝内に挿入させる寸法を変
えることによって、LSIチップとキャップとの間の間
隔が変わるから、LSIチップの実装高さや傾き、ま
た、キャップ深さのばらつきが吸収される。
As described above, the semiconductor device according to the present invention is provided with the concave groove facing the opening edge of the cap on the wiring board side, and the concave groove facing the opening edge of the cap is provided in the concave groove. Since the opening edge is joined via solder, the gap between the LSI chip and the cap is changed by changing the dimension for inserting the opening edge of the cap into the concave groove. Also, variations in cap depth are absorbed.

【0034】したがって、LSIチップとキャップとの
間の間隔を均一に保つことができるから、LSIチップ
とキャップとの間に充填する接着剤の量の管理が容易に
なる。そのため、接着剤中に気泡が発生したり、密着不
良となったりすることがなく、しかも、高い熱伝導性が
得られるようになるから、チップキャリアの信頼性が向
上する。
Therefore, since the space between the LSI chip and the cap can be kept uniform, it becomes easy to control the amount of the adhesive agent filled between the LSI chip and the cap. Therefore, bubbles are not generated in the adhesive or the adhesion is not bad, and high thermal conductivity can be obtained, so that the reliability of the chip carrier is improved.

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

【図1】本発明に係る半導体装置の断面図である。FIG. 1 is a cross-sectional view of a semiconductor device according to the present invention.

【図2】本発明に係る半導体装置の要部を拡大して示す
断面図である。
FIG. 2 is an enlarged cross-sectional view showing a main part of a semiconductor device according to the present invention.

【図3】凹溝を配線基板とは別体の部材に形成した他の
実施例を示す断面図である。
FIG. 3 is a cross-sectional view showing another embodiment in which the groove is formed in a member separate from the wiring board.

【図4】微小ピンを使用した他の半導体装置の例を示す
断面図である。
FIG. 4 is a cross-sectional view showing another example of a semiconductor device using micro pins.

【図5】TABリードを使用した他の半導体装置の例を
示す断面図である。
FIG. 5 is a sectional view showing an example of another semiconductor device using a TAB lead.

【図6】従来の半導体装置を示す断面図である。FIG. 6 is a cross-sectional view showing a conventional semiconductor device.

【図7】フリップチップ実装方式の従来の半導体装置の
一部を拡大して示す断面図である。
FIG. 7 is a cross-sectional view showing a part of a conventional flip-chip mounting type semiconductor device in an enlarged manner.

【図8】キャップの寸法を変えない場合の従来の半導体
装置の一部を拡大して示す断面図である。
FIG. 8 is an enlarged cross-sectional view showing a part of the conventional semiconductor device when the size of the cap is not changed.

【符号の説明】[Explanation of symbols]

1 LSIチップ 2 配線基板 9 キャップ 26 凹溝 27 半田 28 接着剤 1 LSI Chip 2 Wiring Board 9 Cap 26 Recessed Groove 27 Solder 28 Adhesive

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 LSIチップがフェイスダウンで配線基
板に実装され、このLSIチップに、開口縁部が配線基
板側に接合されかつ内側底部がLSIチップに接合され
る気密封止用キャップを被冠させた半導体装置におい
て、配線基板側におけるキャップの開口縁と対向する部
位にキャップの開口縁部が臨む凹溝を設け、この凹溝
に、キャップの開口縁部を半田を介して接合させたこと
を特徴とする半導体装置。
1. An LSI chip is mounted face-down on a wiring board, and a cap for airtight sealing is attached to the LSI chip, an opening edge portion of which is joined to the wiring board side and an inner bottom portion of which is joined to the LSI chip. In the semiconductor device, the concave groove facing the opening edge of the cap is provided at a portion facing the opening edge of the cap on the wiring board side, and the opening edge of the cap is joined to the concave groove with solder. A semiconductor device characterized by.
JP4059246A 1992-02-14 1992-02-14 Semiconductor device Pending JPH05226487A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4059246A JPH05226487A (en) 1992-02-14 1992-02-14 Semiconductor device
US08/016,938 US5311402A (en) 1992-02-14 1993-02-12 Semiconductor device package having locating mechanism for properly positioning semiconductor device within package
CA002089435A CA2089435C (en) 1992-02-14 1993-02-12 Semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4059246A JPH05226487A (en) 1992-02-14 1992-02-14 Semiconductor device

Publications (1)

Publication Number Publication Date
JPH05226487A true JPH05226487A (en) 1993-09-03

Family

ID=13107840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4059246A Pending JPH05226487A (en) 1992-02-14 1992-02-14 Semiconductor device

Country Status (1)

Country Link
JP (1) JPH05226487A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5628919A (en) * 1993-12-13 1997-05-13 Matsushita Electric Industrial Co., Ltd. Methods for producing a chip carrier and terminal electrode for a circuit substrate
US6075289A (en) * 1996-10-24 2000-06-13 Tessera, Inc. Thermally enhanced packaged semiconductor assemblies
US6218730B1 (en) * 1999-01-06 2001-04-17 International Business Machines Corporation Apparatus for controlling thermal interface gap distance
EP1168429A1 (en) * 2000-06-28 2002-01-02 Telefonaktiebolaget L M Ericsson (Publ) Integrated circuit chip and method for mounting an integrated circuit chip to a circuit board
US6703702B2 (en) * 2001-07-30 2004-03-09 Fujitsu Hitachi Plasma Display Limited IC chip mounting structure and display device
EP1501341A2 (en) * 2003-07-25 2005-01-26 Robert Bosch Gmbh Arrangement for carrying electrical conductors
US6991969B2 (en) * 2003-02-19 2006-01-31 Octavian Scientific, Inc. Methods and apparatus for addition of electrical conductors to previously fabricated device
KR100708038B1 (en) * 2001-04-20 2007-04-16 앰코 테크놀로지 코리아 주식회사 Mounting structure of semiconductor chip and its method
CN100373599C (en) * 2005-09-29 2008-03-05 威盛电子股份有限公司 Non-lug type chip encapsulation
JP2013507602A (en) * 2009-10-09 2013-03-04 イーエイーディーエス、ドイチュラント、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング Sealed high frequency front end
JP2013105878A (en) * 2011-11-14 2013-05-30 Ibiden Co Ltd Electronic component and manufacturing method of the same
US9052355B2 (en) 2008-03-13 2015-06-09 Translarity, Inc. Wafer prober integrated with full-wafer contactor
JP2019036784A (en) * 2017-08-10 2019-03-07 太陽誘電株式会社 Electronic component and method of manufacturing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05114662A (en) * 1991-08-20 1993-05-07 Fujitsu Ltd Electronic part airtight sealing case and sealing method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05114662A (en) * 1991-08-20 1993-05-07 Fujitsu Ltd Electronic part airtight sealing case and sealing method thereof

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640051A (en) * 1993-12-13 1997-06-17 Matsushita Electric Industrial Co., Ltd. Chip package, a chip carrier, a terminal electrode for a circuit substrate and a chip package-mounted complex
US5628919A (en) * 1993-12-13 1997-05-13 Matsushita Electric Industrial Co., Ltd. Methods for producing a chip carrier and terminal electrode for a circuit substrate
US6075289A (en) * 1996-10-24 2000-06-13 Tessera, Inc. Thermally enhanced packaged semiconductor assemblies
US6354485B1 (en) 1996-10-24 2002-03-12 Tessera, Inc. Thermally enhanced packaged semiconductor assemblies
US6218730B1 (en) * 1999-01-06 2001-04-17 International Business Machines Corporation Apparatus for controlling thermal interface gap distance
GB2345577B (en) * 1999-01-06 2004-02-04 Ibm Electronic chip assembly
EP1168429A1 (en) * 2000-06-28 2002-01-02 Telefonaktiebolaget L M Ericsson (Publ) Integrated circuit chip and method for mounting an integrated circuit chip to a circuit board
KR100708038B1 (en) * 2001-04-20 2007-04-16 앰코 테크놀로지 코리아 주식회사 Mounting structure of semiconductor chip and its method
US6703702B2 (en) * 2001-07-30 2004-03-09 Fujitsu Hitachi Plasma Display Limited IC chip mounting structure and display device
US6991969B2 (en) * 2003-02-19 2006-01-31 Octavian Scientific, Inc. Methods and apparatus for addition of electrical conductors to previously fabricated device
EP1501341A2 (en) * 2003-07-25 2005-01-26 Robert Bosch Gmbh Arrangement for carrying electrical conductors
EP1501341A3 (en) * 2003-07-25 2005-06-22 Robert Bosch Gmbh Arrangement for carrying electrical conductors
CN100373599C (en) * 2005-09-29 2008-03-05 威盛电子股份有限公司 Non-lug type chip encapsulation
US9052355B2 (en) 2008-03-13 2015-06-09 Translarity, Inc. Wafer prober integrated with full-wafer contactor
US9612278B2 (en) 2008-03-13 2017-04-04 Translarity, Inc. Wafer prober integrated with full-wafer contacter
JP2013507602A (en) * 2009-10-09 2013-03-04 イーエイーディーエス、ドイチュラント、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング Sealed high frequency front end
US8971056B2 (en) 2009-10-09 2015-03-03 Eads Deutschland Gmbh Hermetically sealed radio-frequency front end
JP2013105878A (en) * 2011-11-14 2013-05-30 Ibiden Co Ltd Electronic component and manufacturing method of the same
JP2019036784A (en) * 2017-08-10 2019-03-07 太陽誘電株式会社 Electronic component and method of manufacturing the same

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