JPS6269628A - Semiconductor device and manufacture thereof - Google Patents

Semiconductor device and manufacture thereof

Info

Publication number
JPS6269628A
JPS6269628A JP21057785A JP21057785A JPS6269628A JP S6269628 A JPS6269628 A JP S6269628A JP 21057785 A JP21057785 A JP 21057785A JP 21057785 A JP21057785 A JP 21057785A JP S6269628 A JPS6269628 A JP S6269628A
Authority
JP
Japan
Prior art keywords
paste
bed
semiconductor pellet
bed part
pellet
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
JP21057785A
Other languages
Japanese (ja)
Inventor
Hideo Shin
進 日出夫
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP21057785A priority Critical patent/JPS6269628A/en
Publication of JPS6269628A publication Critical patent/JPS6269628A/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
    • H01L2224/01Means 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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/31Structure, shape, material or disposition of the layer connectors after the connecting process
    • H01L2224/32Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
    • H01L2224/321Disposition
    • H01L2224/32151Disposition the layer 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
    • H01L2224/32221Disposition the layer 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
    • H01L2224/32245Disposition the layer 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 metallic

Landscapes

  • Die Bonding (AREA)

Abstract

PURPOSE:To contrive to properly control the usage of a paste by a method wherein the size of the bed art of a lead frame is made smaller than that of a semiconductor pellet to be mounted and the spreading of the paste is limited by the size of the bed part. CONSTITUTION:A lead frame is placed on a mounting stage 16 and a paste 15 is dripped on its bed part 13. A recessed part which becomes lower in the prescribed depth is formed under the bed part 13 of the mounting stage 16, a suction hole 17 is opened in this recessed part and the suction hole 17 is connected to a vacuum pump through a hose and so on. Such a suction is performed at the same time as the time a semiconductor pellet 11 is placed on the bed part 13 or since that time ago. Hereby, it is eliminated that an excess paste extruded from the bed part 13 to the outside by placing the semiconductor pellet 11 circulates in to the upper surface of the pellet 11 on the bed part 13 and is adhered thereon. As a result, a reduction in the electrical characteristics can be prevented.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は半導体装置およびその製造方法に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a semiconductor device and a method for manufacturing the same.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

第4図に従来の半導体装置の部分断面を示す。 FIG. 4 shows a partial cross section of a conventional semiconductor device.

リードフレームのインナーリード1の中央部分にインナ
ーリード1と所定の間隔を有してベッド部2が位置して
おり、このベッド部2上に半導体ペレット3がペースト
4を介して所定位置にマウントされている。そして、こ
の半導体ペレット3上の電極とインナーリード1とが金
線、アルミニウム線等のボンディングワイヤ(図示せず
)によって接続され、半導体ペレット3、ボンディング
ワイヤ、ベッド部2を樹脂にてモールドして半導体装置
が形成される。ここで、ベッド部2は半導体ペレット3
をマウントしやすくするため、および電気的抵抗を介す
るため、通常マウントされる半導体ペレット3よりも大
きなサイズとなるように形成されている。
A bed portion 2 is located at the center of the inner lead 1 of the lead frame with a predetermined distance from the inner lead 1, and a semiconductor pellet 3 is mounted on the bed portion 2 at a predetermined position via a paste 4. ing. Then, the electrode on the semiconductor pellet 3 and the inner lead 1 are connected by a bonding wire (not shown) such as a gold wire or an aluminum wire, and the semiconductor pellet 3, the bonding wire, and the bed portion 2 are molded with resin. A semiconductor device is formed. Here, the bed part 2 is a semiconductor pellet 3
In order to facilitate mounting and to provide electrical resistance, the semiconductor pellet 3 is formed to have a larger size than the semiconductor pellet 3 that is normally mounted.

しかしながら、このようにリードフレームのベッド部2
が半導体ペレット3よりも大きい場合には、半導体ペレ
ット3の全面にペースト1が塗布されない場合、あるい
は半導体ペレット3からペースト4がはみ出した場合に
不都合が生じる。すなわち、ペースト4が全面に塗布さ
れない場合には半導体ペレット3とベッド部2が完全に
導通せず半導体装置の電気特性が不良となり、一方、ペ
ースト4がはみ出した場合には余分なベース1〜が半導
体ペレット3の上面周縁部に付着し、ペースト4に含有
される不純物によって半導体ペレット3表面に形成され
たアルミニウム配線層がコロ−ジョンを起こし、信頼性
低下の原因となる。さらに、ベッド部2が大きいど、ペ
ーストの滴下位置精度や滴下量精度が要求されこれら精
度を満足するようにペーストを滴下することは困難であ
るという問題があった。
However, in this way, the bed part 2 of the lead frame
is larger than the semiconductor pellet 3, problems will occur if the paste 1 is not applied to the entire surface of the semiconductor pellet 3 or if the paste 4 protrudes from the semiconductor pellet 3. That is, if the paste 4 is not applied to the entire surface, the semiconductor pellet 3 and the bed part 2 will not be completely electrically conductive, resulting in poor electrical characteristics of the semiconductor device.On the other hand, if the paste 4 protrudes, the excess base 1~ The impurities attached to the upper surface of the semiconductor pellet 3 and contained in the paste 4 cause corrosion of the aluminum wiring layer formed on the surface of the semiconductor pellet 3, causing a decrease in reliability. Furthermore, although the bed portion 2 is large, precision in the dropping position and amount of the paste is required, and there is a problem in that it is difficult to drop the paste in a manner that satisfies these precisions.

〔発明の目的〕[Purpose of the invention]

本発明は、上記事情を考慮してなされたもので、ペース
トの塗布むらや余分なぺ・−ストによる信頼性の低下を
招くことなく、ベース1〜の使用量が適切な半導体装置
おJ:びその製造方法を提供することを目的としている
The present invention has been made in consideration of the above-mentioned circumstances, and is a semiconductor device in which an appropriate amount of base 1 to J is used without causing deterioration in reliability due to uneven paste application or excess paste. The purpose of this research is to provide a method for manufacturing the same.

〔発明の概要〕 上記目的を達成するため本発明による半導体装置は、リ
ードフレームのベッド部のサイズをマウン1〜される半
導体ペレットのυイズよりも小さくしてペーストの広が
りをベッド部のサイズで制限するようにしたことを特徴
としている。また、本発明による半導体装置の製造方法
は、ペーストが滴下されたベッド部に半導体ペレットを
マウントするに際し、ベッド部の外側にはみ出したペー
ストを真空吸引で除去して半導体ペレットへの付着を防
止したことを特徴としている。
[Summary of the Invention] In order to achieve the above object, the semiconductor device according to the present invention has the size of the bed portion of the lead frame smaller than the υ size of the semiconductor pellet to be mounted, so that the spread of the paste is controlled by the size of the bed portion. It is characterized by being restricted. Further, in the method for manufacturing a semiconductor device according to the present invention, when mounting the semiconductor pellet on the bed portion onto which the paste has been dropped, the paste protruding outside the bed portion is removed by vacuum suction to prevent it from adhering to the semiconductor pellet. It is characterized by

〔発明の実施例〕[Embodiments of the invention]

以下、図示の一実施例により本発明を説明する。 The present invention will be explained below with reference to an illustrated embodiment.

第1図に示すように、半導体ペレット11がマウントさ
れるリードフレームは、インナーリード及びアウターリ
ードが連設されたインナーリード12と、インナーリー
ド12の中央部分に所定間隔で設けられたベッド部13
を有している。この場合、ベッド部13はタイバー14
によってインナーリード12のほぼ中央部分に支持され
るものである。このベッド部13上にはベース]〜15
を介して半導体ペレット11がマウントされるが、ベッ
ド部13のサイズは半導体ベレツi・11のサイズより
も小さくなるように形成されている。従って、ベッド部
13上に滴下されるペースト15はベッド部13のサイ
ズで制限されるにうになっている。このため、ペースト
15の滴下量を正確にコントロールする必要がなくなる
。またベッド部13全面にペースト15を塗布すればい
いのでペースト15の滴下位置をコントロールする必要
がなくなる。次に、半導体ペレット11の電極とリード
フレームのリード部12のインナーリードとがボンディ
ングワイヤ(図示せず)によって接続される。半導体ペ
レッ1〜11、ボンディングワイヤ、ベッド部13およ
びインナーリード12を含む領域が例えば樹脂によって
封止されて半導体装置が形成される。
As shown in FIG. 1, the lead frame on which the semiconductor pellet 11 is mounted includes an inner lead 12 in which an inner lead and an outer lead are connected, and a bed part 13 provided at a predetermined interval in the center of the inner lead 12.
have. In this case, the bed section 13 is connected to the tie bar 14.
The inner lead 12 is supported approximately at the center thereof. On this bed part 13 is a base]~15
The semiconductor pellet 11 is mounted through the bed portion 13, and the size of the bed portion 13 is formed to be smaller than the size of the semiconductor pellet i.11. Therefore, the paste 15 dropped onto the bed section 13 is limited by the size of the bed section 13. Therefore, there is no need to accurately control the amount of paste 15 dropped. Furthermore, since the paste 15 can be applied to the entire surface of the bed portion 13, there is no need to control the dropping position of the paste 15. Next, the electrode of the semiconductor pellet 11 and the inner lead of the lead portion 12 of the lead frame are connected by a bonding wire (not shown). A region including semiconductor pellets 1 to 11, bonding wires, bed portion 13, and inner leads 12 is sealed with, for example, resin to form a semiconductor device.

このような半導体装置の製造は、第1図、第2図に示ず
ようにまず、リードフレームをマウントステージ16上
に載置し、そのベッド部13上にペースト15を滴下し
て行なわれる。このマウントステージ16のベッド部1
3下方には所定の深さで低くなる四部が形成され、この
凹部に吸引穴17が開設されている。そして、この吸引
穴17がホース等によって図示しない真空ポンプに接続
されている。かかる吸引はベッド部13上に半導体ペレ
ット11が載置されると同時、あるいはそれ以前から行
なわれており、半導体ペレット11の載置でベッド部1
3から外側に押し出された余分のペーストがベッド部1
3上の半導体ベレット11上面まで巡り込んで付着する
ことがないから、信頼性が向上すると共にペースト15
の滴下量を多くして接着性を向上させることができる。
In manufacturing such a semiconductor device, as shown in FIGS. 1 and 2, a lead frame is first placed on a mount stage 16, and paste 15 is dropped onto the bed portion 13 of the lead frame. Bed part 1 of this mount stage 16
Below 3, four parts are formed that become lower at a predetermined depth, and a suction hole 17 is opened in this recess. This suction hole 17 is connected to a vacuum pump (not shown) via a hose or the like. Such suction is performed at the same time as the semiconductor pellet 11 is placed on the bed section 13, or even before that, and when the semiconductor pellet 11 is placed, the bed section 1
The excess paste pushed out from the bed part 1
Since the paste 15 does not go around and adhere to the upper surface of the semiconductor pellet 11 on the semiconductor pellet 3, reliability is improved and the paste 15
The adhesion can be improved by increasing the amount of dripping.

またペースト15はベッド部13の全面に塗布されてい
るので電気的特性も安定したものが得られる。
Further, since the paste 15 is applied to the entire surface of the bed portion 13, stable electrical characteristics can be obtained.

次に、この半導体装置はワイヤボンディング工程に移送
される。このワイヤボンディングに際しては、ボンディ
ングワイヤの接続性を良好に行うため、半導体ペレット
11おにびリードフレームをヒータブロックで加温して
行なう。第3図はこのワイヤボンディング時の状態を示
している。加温を行なうヒータブロック18はリードフ
レームおよび半導体ペレット11を内部に収納できるよ
うに凹部が形成されるが、凹部内にはベッド部13の外
縁よりも外側にはみ出した半導体ベレッ1−の周縁部分
を支持して加温する段部19が形成されている。半導体
ペレット114;1周縁部分の段部19に支持されるこ
とで、ワイヤボンディング時の圧力等によってクラック
が発生するのを防1にすることができる。従って、半導
体ペレット11の電極とリード部のインナーリードとの
接続が良好に行なわれる。このワイヤボンディングの後
は、樹脂を半導体ペレット11、ボンディングワイV1
インナーリードを含む領域にモールドし、半導体装置が
製造される。
Next, this semiconductor device is transferred to a wire bonding process. During this wire bonding, the semiconductor pellet 11 and the lead frame are heated with a heater block to ensure good connectivity of the bonding wire. FIG. 3 shows the state during this wire bonding. The heater block 18 that performs heating is formed with a recess so that the lead frame and the semiconductor pellet 11 can be housed therein, but inside the recess there is a peripheral edge portion of the semiconductor pellet 1- that protrudes beyond the outer edge of the bed portion 13. A stepped portion 19 is formed to support and heat the. The semiconductor pellet 114 is supported by the stepped portion 19 at the periphery, thereby preventing cracks from occurring due to pressure during wire bonding. Therefore, the electrode of the semiconductor pellet 11 and the inner lead of the lead portion are well connected. After this wire bonding, the resin is transferred to the semiconductor pellet 11 and the bonding wire V1.
A semiconductor device is manufactured by molding the area including the inner leads.

〔発明の効果〕〔Effect of the invention〕

以上のとおり本発明によれば、リードフレームのベッド
部をマウントされる半導体ペレットよりも小さなサイズ
にしたから、ペースl−litを多くして接着性を向上
させることができる。また、本発明の111造方法によ
れば、半導体ペレットを載置することによりベッド部の
外側にはみ出した余分のペーストを吸引力で除去するよ
うにしたから、ペーストが半導体ペレットの上面まで付
着することがなく、かつ電気的特性の低下を防止でき、
信頼性を向4ニさせることができる。
As described above, according to the present invention, since the bed portion of the lead frame is made smaller in size than the semiconductor pellet to be mounted, it is possible to increase the pace l-lit and improve adhesiveness. Furthermore, according to the 111 manufacturing method of the present invention, excess paste protruding from the outside of the bed section is removed by suction when the semiconductor pellet is placed, so that the paste adheres to the top surface of the semiconductor pellet. and can prevent deterioration of electrical characteristics.
Reliability can be improved fourfold.

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

第1図、第2図は本発明による半導体装置のマウン1一
時の状態を示す断面図および平面図、第3図は同半導体
装置のワイヤボンディング時の状態を示す断面図、第4
図は従来の半導体装置の断面図である。 11・・・半導体ペレット、12・・・リード部、13
・・・ベッド部、1/I・・・タイバー、15・・・ペ
ース1〜.16・・・マウントステージ、18・・・ヒ
ータブロック。 第 1 図 第2図 旧 第3 図 第4図
1 and 2 are a cross-sectional view and a plan view showing the state of the semiconductor device according to the present invention when the mount 1 is in a temporary state, FIG. 3 is a cross-sectional view showing the state of the semiconductor device during wire bonding, and FIG.
The figure is a cross-sectional view of a conventional semiconductor device. 11... Semiconductor pellet, 12... Lead part, 13
...Bed part, 1/I...Tie bar, 15...Pace 1~. 16...Mount stage, 18...Heater block. Figure 1 Figure 2 Old Figure 3 Figure 4

Claims (1)

【特許請求の範囲】 1、リードフレームのベッド部上に半導体ペレットをペ
ーストを介してマウントした半導体装置において、 前記ベッド部のサイズが前記半導体ペレットのサイズよ
りも小さいことを特徴とする半導体装置。 2、リードフレームのベッド部にペーストを滴下し、前
記ベッド部よりも大きなサイズの半導体ペレットを前記
ベッド部上に載置し、前記ベッド部の外側に押し出され
た余分のペーストを真空吸引により除去することにより
、前記ベッド部に前記半導体ペレットをマウントするこ
とを特徴とする半導体装置の製造方法。
[Claims] 1. A semiconductor device in which a semiconductor pellet is mounted on a bed portion of a lead frame via paste, wherein the size of the bed portion is smaller than the size of the semiconductor pellet. 2. Drop the paste onto the bed part of the lead frame, place a semiconductor pellet larger than the bed part on the bed part, and remove the excess paste pushed out to the outside of the bed part by vacuum suction. A method for manufacturing a semiconductor device, comprising: mounting the semiconductor pellet on the bed portion.
JP21057785A 1985-09-24 1985-09-24 Semiconductor device and manufacture thereof Pending JPS6269628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21057785A JPS6269628A (en) 1985-09-24 1985-09-24 Semiconductor device and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21057785A JPS6269628A (en) 1985-09-24 1985-09-24 Semiconductor device and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS6269628A true JPS6269628A (en) 1987-03-30

Family

ID=16591613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21057785A Pending JPS6269628A (en) 1985-09-24 1985-09-24 Semiconductor device and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS6269628A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0628997A3 (en) * 1993-06-10 1995-09-06 Texas Instruments Inc Semiconductor device with small die pad and method of making same.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0628997A3 (en) * 1993-06-10 1995-09-06 Texas Instruments Inc Semiconductor device with small die pad and method of making same.

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