JPH0969599A - Resin encapsulated semiconductor device - Google Patents
Resin encapsulated semiconductor deviceInfo
- Publication number
- JPH0969599A JPH0969599A JP22239895A JP22239895A JPH0969599A JP H0969599 A JPH0969599 A JP H0969599A JP 22239895 A JP22239895 A JP 22239895A JP 22239895 A JP22239895 A JP 22239895A JP H0969599 A JPH0969599 A JP H0969599A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- resin
- semiconductor device
- leads
- insulating material
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means 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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means 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
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—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
- H01L2224/48221—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
- H01L2224/48245—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 metallic
- H01L2224/48247—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 metallic connecting the wire to a bond pad of the item
Landscapes
- Lead Frames For Integrated Circuits (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、樹脂封止型半導体
装置に関し、特に、樹脂封止後のリード成形を不要とす
る樹脂封止型半導体装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-encapsulated semiconductor device, and more particularly to a resin-encapsulated semiconductor device that does not require lead molding after resin encapsulation.
【0002】[0002]
【従来の技術】従来の樹脂封止型半導体装置において
は、樹脂封止部の外部に端子が露出しており、この端子
を介して、装置内部のチップとの電気的接続を取れる構
造になっている。DIP(Dual In−line
Package)やSOP(Small Outlin
e Package)、QFP(Quad Flat
Package)はその代表的なものであり、それぞ
れ、樹脂封止部およびリード形状に違いはあるものの、
基本的な構造に変わりはない。図5はQFPの断面図を
示したものであり、従来の樹脂封止型半導体装置の構造
を本図を用いて説明する。まず、図5において、リード
フレームのアイランド2aにチップ3を搭載し、インナ
ーリード2bとチップ3とをワイヤー4によって電気的
に接続する。その後、封止樹脂1によって、アイラン
ド、チップ、インナーリードおよびワイヤーの周囲を所
定の形状に封止する。アウターリード2cは樹脂封止後
に必要に応じて外装メッキがなされ、表面実装が可能な
形状に金型等によって成形される。2. Description of the Related Art In a conventional resin-encapsulated semiconductor device, a terminal is exposed outside a resin-encapsulated portion, and a structure is provided through which a terminal can be electrically connected to a chip inside the device. ing. DIP (Dual In-line
Package) and SOP (Small Outlin)
e Package), QFP (Quad Flat)
Package) is a typical one, and although there are differences in the resin sealing part and the lead shape,
The basic structure remains the same. FIG. 5 is a sectional view of the QFP, and the structure of a conventional resin-sealed semiconductor device will be described with reference to this drawing. First, in FIG. 5, the chip 3 is mounted on the island 2 a of the lead frame, and the inner lead 2 b and the chip 3 are electrically connected by the wire 4. After that, the periphery of the island, the chip, the inner leads, and the wire is sealed in a predetermined shape by the sealing resin 1. The outer leads 2c are externally plated as necessary after resin sealing, and are molded by a mold or the like into a shape capable of surface mounting.
【0003】しかし、樹脂封止型半導体装置の小型・高
機能化によって、アウターリードの狭ピッチ化が進み、
かつ、リード自体も細くなってきているため、リード成
形時、あるいは成形後に、任意の一辺に存在するリード
全体が一方向に揃って曲がるリードスラントが生じやす
くなったり、リード曲がりに起因したリード間ショート
あるいは、部分的なリード曲がりが発生しやすくなると
いった問題が起こる。また、半導体装置のコーナーリー
ドの変形も顕著になってくる。However, as the resin-encapsulated semiconductor device becomes smaller and has higher functionality, the outer lead pitch becomes narrower,
In addition, since the leads themselves are becoming thinner, lead slants tend to occur in which the entire leads existing on one side are bent in one direction during or after the lead is formed, or the lead spacing caused by the lead bends. There is a problem that short-circuiting or partial lead bending is likely to occur. Also, the deformation of the corner leads of the semiconductor device becomes remarkable.
【0004】これらの問題点を解決するためには、アウ
ターリードを封止樹脂部に埋設し、その一部を露出させ
るのが有効であるとの考えから、特開昭59−2754
9に開示されている図6のような構造が提案されてい
る。アイランド2a上に搭載されたチップ3とインナー
リード2bとをワイヤー4で電気的に接続し、アイラン
ド、チップ、インナーリード、および樹脂封止後に一部
が露出するようあらかじめ加工されたアウターリード2
cを封止樹脂1で封止する。図5に示した従来の樹脂封
止型半導体装置のように、封止樹脂の外部にアウターリ
ードが突出しておらず、その大部分が封止樹脂部に埋設
されているため、樹脂封止後のリードスラントやリード
間ショート、コーナーリード変形などの不具合を防止す
ることができる。In order to solve these problems, it is effective to embed the outer leads in the encapsulating resin portion and expose a part of the outer leads.
A structure as shown in FIG. 6 disclosed in No. 9 is proposed. The chip 3 mounted on the island 2a and the inner lead 2b are electrically connected by a wire 4, and the island, the chip, the inner lead, and the outer lead 2 preliminarily processed to be partially exposed after resin sealing.
c is sealed with the sealing resin 1. Unlike the conventional resin-encapsulated semiconductor device shown in FIG. 5, since the outer leads do not project outside the encapsulation resin and most of them are embedded in the encapsulation resin part, after resin encapsulation It is possible to prevent problems such as lead slant, short circuit between leads, and deformation of corner leads.
【0005】[0005]
【発明が解決しようとする課題】アウターリードの一部
が露出するように、封止樹脂部にリードを埋設させた樹
脂封止型半導体装置によって、リードスラント、あるい
はリード間ショート、リード曲がり、コーナーリード変
形といった不具合を防止できる。しかし、ただ単に封止
樹脂の表面からアウターリードを露出させるだけでは、
次のようなことが問題となってくる。まず第一に、封止
樹脂からアウターリードを露出させるためには、樹脂封
止前に、あらかじめアウターリードを加工しておく必要
がある。図6において、チップ搭載後に加工を行なった
場合、強度の弱いワイヤー4の変形や、切断等の問題が
生じる。チップ搭載前に加工を行うと、リード幅の細い
インナーリード2bに段差があるため、樹脂封止を含め
た組立工程において容易にリードが変形してしまうとい
う問題が生じる。SUMMARY OF THE INVENTION With a resin-sealed semiconductor device in which leads are embedded in a sealing resin portion so that a part of the outer leads is exposed, a lead slant, short-circuit between leads, lead bending, corner Problems such as lead deformation can be prevented. However, by simply exposing the outer leads from the surface of the sealing resin,
The following are problems. First of all, in order to expose the outer leads from the sealing resin, it is necessary to process the outer leads in advance before the resin sealing. In FIG. 6, when processing is performed after the chip is mounted, problems such as deformation of the wire 4 having weak strength and cutting occur. If the processing is performed before mounting the chip, there is a problem that the inner lead 2b having a narrow lead width has a step, so that the lead is easily deformed in an assembly process including resin sealing.
【0006】また、リード幅の細いインナーリード2b
に段差を設けているため、インナーリード2bとアウタ
ーリード2cの段差深さ精度が得られにくい上、各リー
ドが分離していることから、各リードの段差深さにバラ
ツキが生じ、樹脂封止時に樹脂がアウターリード2cの
下面に入り込み、安定してアウターリード2cの下面を
封止樹脂から露出させることができないという問題点が
ある。Also, the inner lead 2b having a narrow lead width
Since the step difference is provided in the inner lead 2b and the outer lead 2c, it is difficult to obtain the step depth accuracy, and since each lead is separated, the step depth of each lead varies, and the resin sealing is performed. There is a problem that the resin sometimes enters the lower surface of the outer lead 2c, and the lower surface of the outer lead 2c cannot be stably exposed from the sealing resin.
【0007】本発明の目的は、封止樹脂にアウターリー
ドが埋設され、かつその一部が露出した形態を有する樹
脂封止型半導体装置において、組立工数の増加並びに組
立性の悪化を伴うことなく製造することが可能な樹脂封
止型半導体装置を提供することである。An object of the present invention is to provide a resin-encapsulated semiconductor device in which outer leads are embedded in a sealing resin and a part of which is exposed, without increasing the number of assembling steps and degrading the assemblability. An object of the present invention is to provide a resin-sealed semiconductor device that can be manufactured.
【0008】[0008]
【課題を解決するための手段】本発明による樹脂封止型
半導体装置では、各外部接続端子の一面が半導体装置の
樹脂封止部に埋設され、他の一面が前記樹脂封止部から
露出しており、前記外部接続端子の樹脂封止部内に埋設
された面と、完全に樹脂封止部内部に存在し、かつ外部
接続端子につながる導体部の一面が絶縁材料によって接
着固定する。前記絶縁材料として、ポリイミドテープと
絶縁接着剤の複合材あるいは熱硬化性絶縁樹脂を使用す
る。なお、チップ搭載前に各リード間の電気的絶縁がな
されており、各リードが前記絶縁材料によってのみ連結
されている。In the resin-sealed semiconductor device according to the present invention, one surface of each external connection terminal is embedded in the resin-sealed portion of the semiconductor device, and the other surface is exposed from the resin-sealed portion. That is, the surface of the external connection terminal, which is embedded in the resin sealing portion, and the one surface of the conductor portion, which is completely inside the resin sealing portion and is connected to the external connection terminal, are bonded and fixed by an insulating material. As the insulating material, a composite material of a polyimide tape and an insulating adhesive or a thermosetting insulating resin is used. The leads are electrically insulated from each other before the chip is mounted, and the leads are connected only by the insulating material.
【0009】[0009]
【発明の実施の形態】次に、本発明について図面を参照
して説明する。図1は本発明の第1の実施の形態を示す
断面図であり、図2は図1に示した半導体装置の上面か
らの透視図である。まず、図1において、アイランド2
aに搭載されたチップ3とインナーリード2bはワイヤ
ー4によって電気的に接続されている。アウターリード
2cの先端部分はアイランドの方向に、折り曲げ加工さ
れており、アウターリード2cの先端部分とインナーリ
ード2bあるいはアウターリード2cの一部が絶縁材5
を介して接着固定されており、さらに、封止樹脂1によ
って、アウターリード2cの先端近傍の一面が露出する
ように封止されている。Next, the present invention will be described with reference to the drawings. 1 is a cross-sectional view showing a first embodiment of the present invention, and FIG. 2 is a perspective view from the top surface of the semiconductor device shown in FIG. First, in FIG. 1, the island 2
The chip 3 mounted on a and the inner lead 2b are electrically connected by a wire 4. The tip portion of the outer lead 2c is bent in the direction of the island, and the tip portion of the outer lead 2c and the inner lead 2b or a part of the outer lead 2c are made of the insulating material 5.
It is bonded and fixed via, and is further sealed by the sealing resin 1 so that one surface near the tips of the outer leads 2c is exposed.
【0010】図2は本半導体装置を上面から透視したも
のであるが、アウターリード2cの折り曲げられた部分
がインナーリード2bと絶縁材5を介して固定されてい
る様子が示されている。ここで、吊りリード2dの一部
にも絶縁材が貼り付られているが、これは、リード全体
がリードフレームから分離するのを防ぐ役割をする。ま
た、アウターリード2cの折り曲げる部分の長さに関し
ては、吊りリード2dを挟んで対向するコーナーリード
同士が接触しない長さとし、アウターリード2cの形状
は必要に応じて変更して良いものとする。FIG. 2 is a perspective view of the semiconductor device as seen from above, showing that the bent portion of the outer lead 2c is fixed to the inner lead 2b via the insulating material 5. Here, an insulating material is also attached to a part of the suspension lead 2d, but this serves to prevent the entire lead from being separated from the lead frame. The length of the bent portion of the outer lead 2c is set so that the corner leads facing each other with the suspension lead 2d in between do not contact each other, and the shape of the outer lead 2c may be changed as necessary.
【0011】次に、製造方法について説明する。図3は
製造工程を断面図で示したものであるが、まず、図3
(a)に示すように、アウターリード2cの先端部分に
絶縁材5を帯状に貼り付け、所定の長さ分だけアイラン
ド方向に折り曲げる。このとき、絶縁材5のアウターリ
ード2c先端部と接着されている面と反対の面がインナ
ーリードあるいはアウターリードの一部分と接着固定さ
れ、図3(b)に示すような断面形状となる。この時点
で、各リード間は電気的に独立しており、リード全体は
リードフレームの枠体とアイランド2aを連結する吊り
リード2dによって、絶縁材を介して支持されている。
絶縁材を吊りリードにまで貼り付けたのは、リードの脱
落を防止するためであり、また、絶縁材を先にアウター
リード先端部分に貼り付けたのは、折り曲げ加工時のア
ウターリード変形を抑制するためである。このようにし
て、本発明による半導体装置に使用するリードフレーム
が完成する。後は、アイランド2aにチップ3を搭載
し、インナーリードとチップの電気的接続を取った後、
アウターリードの一部が露出するように樹脂封止され図
3(c)の最終製品形態に加工される。Next, the manufacturing method will be described. FIG. 3 is a sectional view showing the manufacturing process.
As shown in (a), the insulating material 5 is attached to the tip portion of the outer lead 2c in a band shape, and is bent in the island direction by a predetermined length. At this time, the surface of the insulating material 5 opposite to the surface bonded to the distal end portion of the outer lead 2c is bonded and fixed to a part of the inner lead or the outer lead to have a cross-sectional shape as shown in FIG. 3 (b). At this point, the leads are electrically independent from each other, and the entire leads are supported by the suspension leads 2d that connect the frame body of the lead frame and the island 2a via the insulating material.
The reason why the insulation material is attached to the suspension leads is to prevent the leads from falling off, and the insulation material is attached to the tip of the outer leads first to prevent deformation of the outer leads during bending. This is because In this way, the lead frame used in the semiconductor device according to the present invention is completed. After that, after mounting the chip 3 on the island 2a and electrically connecting the inner lead and the chip,
It is resin-sealed so that a part of the outer lead is exposed, and processed into a final product form shown in FIG.
【0012】絶縁材によって、あらかじめアウターリー
ド先端部を接着固定することで、樹脂封止を含めた組立
工程全体において、リードが変形することなく、また、
インナーリード2bとアウターリード2cの間隔は絶縁
材5の厚さで決定されるため、高さ方向の精度も得られ
るから、容易にアウターリードの一部が露出した半導体
装置を組立てることが可能になる。また、図3(c)に
示すように、リードの折り曲げ部を封入金型6に押しつ
けて嵌合するようにリードフレームを設置すると、より
安定してアウターリード2cを露出させることができ
る。なお、接着固定用の絶縁材としては、ポリイミドテ
ープと絶縁接着剤との複合材および熱硬化性絶縁樹脂が
用いられる。[0012] By fixing the outer lead tip end portion with the insulating material in advance, the lead is not deformed in the entire assembly process including the resin sealing, and
Since the distance between the inner lead 2b and the outer lead 2c is determined by the thickness of the insulating material 5, accuracy in the height direction can also be obtained, so that it is possible to easily assemble a semiconductor device in which a part of the outer lead is exposed. Become. Further, as shown in FIG. 3C, if the lead frame is installed so that the bent portion of the lead is pressed and fitted to the encapsulating mold 6, the outer lead 2c can be more stably exposed. A composite material of a polyimide tape and an insulating adhesive and a thermosetting insulating resin are used as the insulating material for adhesive fixing.
【0013】図4は本発明の第2の実施の形態を示す断
面図で、チップの搭載方向を変えた場合である。絶縁材
の接着面側のアイランド上にチップを搭載した例であ
る。こうすることで、アイランド2aを除き、その他の
リードフレーム面は平面となるため、マウント装置や、
ボンディング装置の治工具類を特に改造する必要がな
く、従来の組立装置を用いて半導体装置を組立てること
ができる。FIG. 4 is a sectional view showing a second embodiment of the present invention, in which the chip mounting direction is changed. This is an example in which a chip is mounted on the island on the adhesive surface side of the insulating material. By doing so, the lead frame surface other than the island 2a becomes a flat surface, so that the mounting device,
It is not necessary to modify jigs and tools of the bonding device, and the semiconductor device can be assembled using the conventional assembling device.
【0014】[0014]
【発明の効果】以上説明したように本発明は、アウター
リードを折り曲げ加工し、アウターリードの先端部分と
インナーリードあるいはアウターリードの一部を絶縁材
により接着固定するため、樹脂封止を含む組立工程でア
ウターリードを全く変形させることなく、容易にアウタ
ーリードの一部を露出させた樹脂封止型半導体装置を製
造できるという効果を有する。As described above, according to the present invention, the outer lead is bent and the tip portion of the outer lead and the inner lead or a part of the outer lead are adhered and fixed by the insulating material. There is an effect that a resin-sealed semiconductor device in which a part of the outer lead is exposed can be easily manufactured without deforming the outer lead at all in the process.
【図1】本発明の第1の実施の形態を示す半導体装置の
断面図である。FIG. 1 is a cross-sectional view of a semiconductor device showing a first embodiment of the present invention.
【図2】図1の透視平面図である。2 is a perspective plan view of FIG. 1. FIG.
【図3】(a)〜(c)は本発明の半導体装置の製造工
程を示す断面図である。3A to 3C are cross-sectional views showing a manufacturing process of a semiconductor device of the present invention.
【図4】本発明の第2の実施の形態を示す半導体装置の
断面図である。FIG. 4 is a cross-sectional view of a semiconductor device showing a second embodiment of the present invention.
【図5】従来の半導体装置の断面図である。FIG. 5 is a cross-sectional view of a conventional semiconductor device.
【図6】従来のリード埋設型半導体装置の断面図であ
る。FIG. 6 is a sectional view of a conventional lead-embedded semiconductor device.
1 封止樹脂 2 リードフレーム 2a アイランド 2b インナーリード 2c アウターリード 2d 吊りリード 3 チップ 4 ワイヤー 5 絶縁材 6 封入金型 1 Sealing Resin 2 Lead Frame 2a Island 2b Inner Lead 2c Outer Lead 2d Suspension Lead 3 Chip 4 Wire 5 Insulation Material 6 Encapsulation Mold
Claims (3)
脂封止部に埋設され、他の一面が前記樹脂封止部から露
出しており、前記外部接続端子の樹脂封止部内に埋設さ
れた面と、完全に樹脂封止部内部に存在し、かつ外部接
続端子につながる導体部の一面が絶縁材料によって接着
固定されていることを特徴とする樹脂封止型半導体装
置。1. One surface of each external connection terminal is embedded in a resin encapsulation portion of a semiconductor device, and the other surface is exposed from the resin encapsulation portion and embedded in the resin encapsulation portion of the external connection terminal. The resin-sealed semiconductor device is characterized in that the other surface and the one surface of the conductor portion which is completely inside the resin-sealed portion and is connected to the external connection terminal are bonded and fixed by an insulating material.
と絶縁接着剤の複合材あるいは熱硬化性絶縁樹脂を使用
したことを特徴とする請求項1記載の樹脂封止型半導体
装置。2. The resin-encapsulated semiconductor device according to claim 1, wherein a composite material of a polyimide tape and an insulating adhesive or a thermosetting insulating resin is used as the insulating material.
がなされており、各リードが前記絶縁材料によってのみ
連結されていることを特徴とする請求項1記載の樹脂封
止型半導体装置。3. The resin-sealed semiconductor device according to claim 1, wherein the leads are electrically insulated from each other before mounting the chip, and the leads are connected only by the insulating material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7222398A JP2679687B2 (en) | 1995-08-30 | 1995-08-30 | Resin-sealed semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7222398A JP2679687B2 (en) | 1995-08-30 | 1995-08-30 | Resin-sealed semiconductor device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0969599A true JPH0969599A (en) | 1997-03-11 |
JP2679687B2 JP2679687B2 (en) | 1997-11-19 |
Family
ID=16781756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7222398A Expired - Fee Related JP2679687B2 (en) | 1995-08-30 | 1995-08-30 | Resin-sealed semiconductor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2679687B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02170456A (en) * | 1988-12-22 | 1990-07-02 | Canon Electron Inc | Mounting of integrated circuit structure body |
-
1995
- 1995-08-30 JP JP7222398A patent/JP2679687B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02170456A (en) * | 1988-12-22 | 1990-07-02 | Canon Electron Inc | Mounting of integrated circuit structure body |
Also Published As
Publication number | Publication date |
---|---|
JP2679687B2 (en) | 1997-11-19 |
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