JPH03188659A - Lead frame for semiconductor integrated circuit - Google Patents

Lead frame for semiconductor integrated circuit

Info

Publication number
JPH03188659A
JPH03188659A JP32711889A JP32711889A JPH03188659A JP H03188659 A JPH03188659 A JP H03188659A JP 32711889 A JP32711889 A JP 32711889A JP 32711889 A JP32711889 A JP 32711889A JP H03188659 A JPH03188659 A JP H03188659A
Authority
JP
Japan
Prior art keywords
copper
lead frame
nickel
iron
main component
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
JP32711889A
Other languages
Japanese (ja)
Inventor
Ryuji Ueda
龍二 上田
Sotaro Toki
土岐 荘太郎
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.)
Toppan Inc
Original Assignee
Toppan Printing 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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP32711889A priority Critical patent/JPH03188659A/en
Publication of JPH03188659A publication Critical patent/JPH03188659A/en
Pending legal-status Critical Current

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  • Lead Frames For Integrated Circuits (AREA)

Abstract

PURPOSE:To obtain a lead frame suitable to a high speed semiconductor device wherein strength is high, electric conductivity is high, and thermal expansion coefficient is low, by sandwiching a metal plate whose main component is copper, between metal plate whose main component is ion and nickel, and pressure jointing to form a single plate type lead frame. CONSTITUTION:A metal plate 2 whose main component is copper is sandwiched between metal plates 1 whose main component is iron and nickel, and a lead frame 3 constituted of a single plate is formed by pressure jointing them. Otherwise, a metal plate 12 whose main component is iron and nickel is sandwiched between metal plates 11 whose main component is copper, and a lead frame 3 is formed by pressure jointing them. As the metal whose main component is copper, the following are preferable; oxygen-free copper, phosphor bronze, beryllium copper, and Corson alloy. The content of copper is desirable to be 95% or higher in any one of them. In the metal whose main component is iron and nickel, the ratio of iron and nickel is set in the range of 40-70:60-30. In any constitution, the thickness ratio of the metal plates 2, 11 and 1, 2 is set in the range of 50-20:20-40.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は半導体集積回路用リードフレームの改良に関す
る。特に、リードフレームの導電率を増〔従来の技術〕 半導体集積回路用リードフレームとは、金属の板状体よ
りなり、半導体装置の製造工程に使用される中間部材で
ある。このリードフレームは、半導体集積回路チップを
載置する支持台と、この支持台を支持する支持バーと、
将来は半導体装置のピンとなる接続導体と、上記の支持
バーと上記の接続導体とを保持する枠状の保持バーとか
ら構成されている。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in lead frames for semiconductor integrated circuits. In particular, increasing the electrical conductivity of the lead frame [Prior Art] A lead frame for a semiconductor integrated circuit is an intermediate member made of a metal plate and used in the manufacturing process of a semiconductor device. This lead frame includes a support base on which a semiconductor integrated circuit chip is placed, a support bar that supports this support base,
It consists of a connecting conductor that will become a pin of a semiconductor device in the future, and a frame-shaped holding bar that holds the support bar and the connecting conductor.

この半導体集積回路用リードフレームの材料に求められ
る要請は、機械的強度が大きく、導電率が高く、熱膨張
率が使用される半導体装置の主材料たる半導体のそれと
同等に小さいと云うことである。そして、この要請をお
〜むね満足する材料として、従来技術においては、鉄・
ニッケル合金例えば42ニッケル合金が使用されている
ことが一般である。
The requirements for materials for lead frames for semiconductor integrated circuits are that they have high mechanical strength, high electrical conductivity, and a coefficient of thermal expansion as low as that of semiconductors, which are the main materials of semiconductor devices used. . In the conventional technology, iron and
Nickel alloys, such as 42 nickel alloys, are commonly used.

従来技術に係る半導体集積回路用リードフレームの材料
の1例としての鉄・ニッケル42合金について、上記の
緒特性を下記の第1表に表記する。
Regarding iron-nickel 42 alloy as an example of a material for a lead frame for a semiconductor integrated circuit according to the prior art, the above-mentioned characteristics are shown in Table 1 below.

2己り表 強度(引張り強さ)     70Kg/旧2導電率 
           3% lAC3熱膨張率   
 5. 5 X 10−’/’C〔発明が解決しようと
する課題〕 最近、半導体装置の高速化が益り要求されるにともない
、鉄・ニッケル合金を使用した従来技術に係る半導体集
積回路用リードフレームは、電気抵抗が間く、高速半導
体集積回路用リードフレームとして使用されるには必ず
しも適しないと云う欠点が明らかになってきた。ちなみ
に、現今の高速半導体装置用のリードフレームに対する
上記特性の要請値は、下記の第2表に表記された程度と
理解されている。
2 surface strength (tensile strength) 70Kg/former 2 conductivity
3% lAC3 thermal expansion coefficient
5. 5 X 10-'/'C [Problem to be Solved by the Invention] Recently, with the increasing demand for higher speed semiconductor devices, a lead frame for a semiconductor integrated circuit according to the prior art using an iron-nickel alloy has been developed. It has become clear that these materials have low electrical resistance and are not necessarily suitable for use as lead frames for high-speed semiconductor integrated circuits. Incidentally, it is understood that the required values of the above characteristics for current lead frames for high-speed semiconductor devices are as shown in Table 2 below.

望U 強度(引張り強さ)     60Kg、/w+”導電
率          80% lAC3熱膨張率  
  3.  OX 10−’/’Cすなわち、従来技術
に係る半導体集積回路用リードフレームの材料である鉄
・ニッケル合金の特性は、上記の要請値に比べ、強度お
よび熱膨張率は、お\むね満足できるが、導電率が圧倒
的に小さい、そのため、特に、高速スイッチング素子用
リードフレーム材としては必ずしも満足し得ないと云う
欠点がある。
Desired strength (tensile strength) 60Kg, /w+” Conductivity 80% lAC3 coefficient of thermal expansion
3. OX 10-'/'C In other words, the properties of the iron-nickel alloy, which is the material of the lead frame for semiconductor integrated circuits according to the prior art, are generally satisfactory in terms of strength and coefficient of thermal expansion compared to the above required values. However, it has the disadvantage that it has an extremely low electrical conductivity, which makes it unsatisfactory especially as a lead frame material for high-speed switching elements.

本発明の目的は、従来技術に比べて他の条件を悪化する
ことなく、導電率が更に高い半導体集積回路用リードフ
レームを提供することにある。
An object of the present invention is to provide a lead frame for a semiconductor integrated circuit that has higher conductivity than the prior art without deteriorating other conditions.

〔課題を解決するための手段〕[Means to solve the problem]

上記の目的は、下記いづれの手段によっても達成される
The above object can be achieved by any of the following means.

第1の手段は、銅を主成分とする金属vi(2)を、鉄
とニッケルとを主成分とする金属板(1)をもって挟ま
れて圧着されて形成された単一の板が成形して製造する
こと\されている半導体集積回路用リードフレームによ
って達成される。
The first method is to form a single plate formed by sandwiching and crimping a metal vi (2) mainly composed of copper with a metal plate (1) mainly composed of iron and nickel. This is achieved by a lead frame for semiconductor integrated circuits manufactured by

第2の手段は、鉄とニッケルとを生成分とする金属板(
12)を、銅を主成分とする金属板(11)をもって挟
まれて圧着されて形成された単一の板が成形して製造す
ること−されている半導体集積回路用リードフレームに
よって達成される。
The second means is a metal plate containing iron and nickel (
12) is achieved by a lead frame for a semiconductor integrated circuit, which is manufactured by molding a single plate formed by sandwiching and press-bonding metal plates (11) containing copper as a main component. .

上記のいづれの構成においても、銅を主成分とする金属
には、無酸素銅・リン青銅・ベリリウム銅・コルリン合
金等が好適であるが、それぞれの好ましい組成範囲は、
銅が95%以上である。
In any of the above configurations, oxygen-free copper, phosphor bronze, beryllium copper, corrin alloy, etc. are suitable as the metal containing copper as the main component, but the preferred composition range of each is as follows:
Copper is 95% or more.

また、鉄とニッケルとを主成分とする金属の組成比範囲
は、鉄とニッケルとの比が40〜70:60〜30であ
る。
Further, the composition ratio range of the metal mainly composed of iron and nickel is such that the ratio of iron to nickel is 40 to 70:60 to 30.

さらに、上記のいづれの構成においても、銅を主成分と
する金属板(2)・ (11)の厚さと鉄とニッケルと
を主成分とする金属板(1)・(12)との厚さの比は
、60〜20:20〜40である。
Furthermore, in any of the above configurations, the thickness of the metal plates (2) and (11) whose main components are copper and the thickness of the metal plates (1) and (12) whose main components are iron and nickel. The ratio is 60-20:20-40.

[作用] 本発明は、従来技術に係る半導体集積回路用リードフレ
ームの導電率の向上のためには、半導体集積回路用リー
ドフレームの材料として、銅と他の金属との積層体が使
用しうるとの着想のもとになされたものである。半導体
装置用のリードフレームに対する上記特性の要請値は、
銅の場合、下記の第3表に表記するとおりである。
[Function] The present invention provides that a laminate of copper and other metals can be used as a material for a lead frame for a semiconductor integrated circuit in order to improve the electrical conductivity of the lead frame for a semiconductor integrated circuit according to the prior art. This was created based on the idea. The required values for the above characteristics for lead frames for semiconductor devices are:
In the case of copper, it is as shown in Table 3 below.

芽」し支 強度(引張り強さ)    40にg/閣1導電率  
       100% lAC3熱膨張率     
17 X 10−6/”C上記の数値が示すとおり、銅
のみの場合は、強度と熱膨張率が上記の要請値を満足す
ることができない、そこで、本発明においては、従来技
術においてリードフレーム用材として一般に使用されて
いた鉄・ニッケル合金を、従来ばね材等として一般に使
用されていたリン青銅・ベリリウム銅等をもって補強し
た積層体とすれば、両者の長所のみを選択的に実現しう
る複合材が得られるであろうとの着想を得て、各種組成
の鉄・ニッケル合金と各種組成の銅合金例えば無酸素銅
・リン青銅・ベリリウム銅・コルソン合金等との各種紐
み合わせについておびだ−しい実験を繰り返し、上記の
着想が十分機能しうることを確認して、本発明を完成し
た。実験の結果確認された本発明に係る半導体集積回路
用リードフレーム材の上記の特性を下記の第4表に表記
する。
Support strength (tensile strength): 40g/kaku1 Conductivity
100% lAC3 thermal expansion coefficient
17 X 10-6/"C As shown in the above numerical values, in the case of only copper, the strength and coefficient of thermal expansion cannot satisfy the above required values. Therefore, in the present invention, the lead frame is not used in the prior art. If we create a laminate made by reinforcing the iron-nickel alloy, which is commonly used as a spring material, with phosphor bronze, beryllium copper, etc., which are conventionally used as spring materials, we can create a composite that selectively achieves only the advantages of both. With the idea that it would be possible to obtain materials, we explored various combinations of iron-nickel alloys of various compositions and copper alloys of various compositions, such as oxygen-free copper, phosphor bronze, beryllium copper, and Corson alloys. The present invention was completed by repeating new experiments and confirming that the above idea could function satisfactorily.The above characteristics of the lead frame material for semiconductor integrated circuits according to the present invention confirmed as a result of the experiments are described below. It is written in Table 4.

芽」−聚 強度(引張り強さ) 45〜65 Kg/ lff1n
”導電率       10〜80% lAC3熱膨張
率 7.0〜12 、OX 10−6/’C〔実施例〕 以下、図面を参照して、本発明の二つの実施例に係る半
導体集積回路用リードフレームについて説明する。
Bud' - Seed strength (tensile strength) 45-65 Kg/lff1n
"Electrical conductivity 10-80% lAC3 thermal expansion coefficient 7.0-12, OX 10-6/'C [Example] Hereinafter, with reference to the drawings, leads for semiconductor integrated circuits according to two embodiments of the present invention Let's explain about frames.

に 本実施例は、銅を主成分とする金属板を、鉄とニッケル
とを主成分とする金属板をもって挾み、これらを圧着し
て形成した単一の板を成形して製造した半導体集積回路
用リードフレームである。
In this example, a semiconductor integrated circuit is manufactured by sandwiching a metal plate mainly composed of copper with a metal plate mainly composed of iron and nickel, and forming a single plate by pressing these together. This is a lead frame for circuits.

第2図参照 図は本発明に係る半導体集積回路用リードフレームに使
用される金属板の断面図である。
2 is a sectional view of a metal plate used in a lead frame for a semiconductor integrated circuit according to the present invention.

図において、1はリードフレーム用金属板のライナーを
構成する鉄・ニッケル合金(例えば、鉄ニッケル42合
金)の仮である。2は上記のライナーを構成する鉄・ニ
ッケル合金の板1の間に挟まれた銅の板または銅合金(
例えば、無酸素銅・リン青銅・ベリリウム銅・コルソン
合金等)の板である。
In the figure, 1 is a temporary iron-nickel alloy (for example, iron-nickel 42 alloy) that constitutes the liner of the metal plate for the lead frame. 2 is a copper plate or copper alloy (
For example, it is a plate made of oxygen-free copper, phosphor bronze, beryllium copper, Corson alloy, etc.

本実施例においては、上記のそれぞれの金属板1・2の
厚さは、リードフレームの厚さが一般的な厚さである1
50μmの場合に、鉄・ニッケル42合金の板1の厚さ
は45μm(30%)であり、銅の板または銅合金(例
えば、無酸素銅・リン青銅・ベリリウム銅・コルソン合
金等)の板2の厚さは60IIm(40%)である、こ
れら各金属[1・2の厚さの比率は、リードフレーム自
体の厚さによっても異なるが、鉄・ニッケル合金1の厚
さが20〜40%であり、銅板または銅合金板2の厚さ
が60〜20%であることが現実的である。
In this embodiment, the thickness of each of the metal plates 1 and 2 described above is 1, which is the thickness of the lead frame generally.
In the case of 50 μm, the thickness of the iron-nickel 42 alloy plate 1 is 45 μm (30%), and the thickness of the copper plate or copper alloy plate (for example, oxygen-free copper, phosphor bronze, beryllium copper, Corson alloy, etc.) is 45 μm (30%). The thickness of the iron-nickel alloy 1 is 60IIm (40%), and the thickness of each of these metals [the ratio of the thicknesses of 1 and 2 varies depending on the thickness of the lead frame itself, but the thickness of the iron-nickel alloy 1 is 20 to 40mm. %, and it is realistic that the thickness of the copper plate or copper alloy plate 2 is 60 to 20%.

第3図参照 上記の銅の板または銅合金(例えば、無酸素銅・リン青
銅・ベリリウム銅・コルソン合金等)の板2を上記の鉄
・ニッケル合金(例えば、鉄・ニッケル42合金)の板
1をもって挟持した状態で、約500°Cに加熱し、約
50 Kg/+m++” (D圧力をもって圧接して接
合して、単一の複合板3を製造する。この複合板3の特
性は、第4表に表記したとおりである。
Refer to Figure 3. The above-mentioned copper plate or copper alloy (e.g., oxygen-free copper, phosphor bronze, beryllium copper, Corson alloy, etc.) plate 2 is replaced with the above-mentioned iron-nickel alloy (e.g., iron-nickel 42 alloy) plate 2. A single composite plate 3 is manufactured by heating the composite plate 3 while holding the composite plate 1 to about 500°C and press-welding it with a pressure of about 50 Kg/+m++ (D).The characteristics of this composite plate 3 are as follows. As shown in Table 4.

第1図参照 プレス法またはエツチング法を使用して図示するように
成形して、半導体集積回路用リードフレームを完成する
0図において、5は接続導体であり、保持バー8に支持
されている。6は、半導体チップ(図示せず)がその上
に搭載されるアイランドであり、このアイランド6は支
持バー7を介して保持バー8に一体的に連結されている
Referring to FIG. 1, a lead frame for a semiconductor integrated circuit is completed by molding as shown using a pressing method or an etching method. In FIG. 0, a connecting conductor 5 is supported by a holding bar 8. Reference numeral 6 denotes an island on which a semiconductor chip (not shown) is mounted, and this island 6 is integrally connected to a holding bar 8 via a support bar 7.

こ\で、保持バー8は額縁状の形状を有することが一般
である。上記の接続導体5の一端は、上記のアイランド
6の近傍にこれとは絶縁されて配列される。
Here, the holding bar 8 generally has a frame-like shape. One end of the connection conductor 5 is arranged near the island 6 and insulated therefrom.

2    ・ 2に 本実施例は、鉄とニッケルとを主成分とする金属板を、
銅を主成分とする金属板をもって挟み、これらを圧着し
て形成した単一の板を成形して製造した半導体集積回路
用リードフレームである。
2. In this example, a metal plate whose main components are iron and nickel is
This is a lead frame for a semiconductor integrated circuit manufactured by molding a single plate formed by sandwiching metal plates whose main component is copper and pressing them together.

第4図参照 図は本発明に係る半導体集積回路用リードフレームに使
用される金属板の断面図である。
4 is a sectional view of a metal plate used in a lead frame for a semiconductor integrated circuit according to the present invention.

図において、11はリードフレーム用金属板のライナー
を構成する銅の板または銅合金(例えば、無酸素銅・リ
ン青銅・ベリリウム銅・コルソン合金等)の板である。
In the figure, 11 is a copper plate or a copper alloy plate (for example, oxygen-free copper, phosphor bronze, beryllium copper, Corson alloy, etc.) that constitutes the liner of the metal plate for the lead frame.

12は上記のライナーを構成する銅の板または銅合金(
例えば、無酸素銅・リン青銅・ベリリウム銅・コルリン
合金等)の板11の間に挟まれた鉄・ニッケル合金(例
えば、鉄・ニッケル42合金)の板である。
12 is a copper plate or copper alloy (
For example, it is a plate of iron-nickel alloy (for example, iron-nickel 42 alloy) sandwiched between plates 11 of oxygen-free copper, phosphor bronze, beryllium copper, corrin alloy, etc.).

本実施例においては、上記のそれぞれの金属板11・1
2の厚さは、リードフレームの厚さが一般的な厚さであ
る150μmの場合に、鉄・ニッケル42合金の板12
の厚さは45μm(30%)であり、銅の板または銅合
金(例えば、無酸素銅・リン青銅・ベリリウム銅・コル
リン合金等)の板11の厚さは60μm(40%)であ
る。これら各金属板11−12の厚さの比率は、リード
フレーム自体の厚さによっても異なるが、鉄・ニッケル
合金12の厚さが20〜40%であり、銅板または銅合
金板11の厚さが60〜20%であることが現実的であ
る。
In this embodiment, each of the metal plates 11 and 1 described above is
The thickness of the lead frame is 150 μm, which is a common thickness, and the thickness of the iron-nickel 42 alloy plate 12 is
The thickness of the copper plate or copper alloy plate 11 (for example, oxygen-free copper, phosphor bronze, beryllium copper, corrin alloy, etc.) is 60 μm (40%). The ratio of the thickness of each of these metal plates 11-12 varies depending on the thickness of the lead frame itself, but the thickness of the iron-nickel alloy 12 is 20 to 40%, and the thickness of the copper plate or copper alloy plate 11 is 20% to 40%. is realistically 60 to 20%.

第5図参照 上記の鉄・ニッケル台金(例えば、鉄・ニッケル42合
金〕の板12を上記の銅の板または銅合金(例えば、無
酸素銅・リン青銅・ベリリウム銅・コルリン合金等)の
板11をもって挟持した状態で、約500°Cに加熱し
、約50 Kg / ml11”の圧力をもって圧接し
て接合して、単一の複合板13を製造する。この複合板
13の特性は、第5表に表記したとおりである。
Refer to Figure 5. The plate 12 of the above iron/nickel base metal (for example, iron/nickel 42 alloy) is replaced with the above copper plate or copper alloy (for example, oxygen-free copper, phosphor bronze, beryllium copper, corrin alloy, etc.). A single composite plate 13 is manufactured by holding the plates 11 together, heating them to about 500°C, and pressing and bonding them together with a pressure of about 50 kg/ml11''.The characteristics of this composite plate 13 are as follows. As shown in Table 5.

」α1表 強度(引張り強さ)     55Kg/m”導電率 
         70% lAC3熱膨張率    
 7.5X 10−’/’C以上の工程をもって製造し
た積層体を、第1実施例の場合と同様、プレス法または
エツチング法を使用して成形して、半導体集積回路用リ
ードフレームを完成する。
"α1 table strength (tensile strength) 55Kg/m" electrical conductivity
70% lAC3 thermal expansion coefficient
The laminate produced through a process of 7.5X 10-'/'C or more is molded using the pressing method or etching method as in the first embodiment to complete a lead frame for a semiconductor integrated circuit. .

〔発明の効果〕〔Effect of the invention〕

以上説明せるとおり、本発明に係る半導体集積回路用リ
ードフレームは、銅を主成分とする金属板、または、鉄
とニッケルとを主成分とする金属板を、それぞれ、鉄と
ニッケルとを主成分とする金属板、または、銅を主成分
とする金属板をもって挟んで圧着し、単一の仮とされた
金属板をもって製造されているので、強度が大きく、導
電率が高く、熱膨張率が小さく、高速半導体素子用リー
ドフレームに対する要請をお−むね満足することができ
るから、高速半導体装置用リードフレームとして好適な
半導体装置用リードフレームを提供することが可能であ
る。
As explained above, the lead frame for a semiconductor integrated circuit according to the present invention includes a metal plate mainly composed of copper, or a metal plate mainly composed of iron and nickel, respectively. It is manufactured using a single temporary metal plate that is sandwiched and crimped with a metal plate made of copper, or a metal plate whose main component is copper, so it has high strength, high electrical conductivity, and a low coefficient of thermal expansion. Since the present invention generally satisfies the requirements for a small and high-speed lead frame for semiconductor devices, it is possible to provide a lead frame for a semiconductor device suitable as a lead frame for a high-speed semiconductor device.

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

第1図は、本発明の第1実施例に係る半導体集積回路用
リードフレームの平面図である。 第2図は、本発明の第1実施例に係る半導体集積回路用
リードフレームの製造工程の説明図である。 第3図は、本発明の第1実施例に係る半導体集積回路用
リードフレームに使用する金属板の断面図である。 第4図は、本発明の第2実施例に係る半導体集積回路用
リードフレームの製造工程の説明図である。 第5図は、本発明の第2実施例に係る半導体集積回路用
リードフレームに使用する金属板の断面図である。 1・12・・・鉄・ニッケル合金板、 2・11・・・銅の板または銅合金板、3 ・13・・
・本発明の実施例に係る半導体集積回路用リードフレー
ムに使用する金属 板、 5・・・接続導体、 6・・・アイランド、 7・・・支持バー 8・・・保持バー
FIG. 1 is a plan view of a lead frame for a semiconductor integrated circuit according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of the manufacturing process of a lead frame for a semiconductor integrated circuit according to the first embodiment of the present invention. FIG. 3 is a sectional view of a metal plate used in a lead frame for a semiconductor integrated circuit according to a first embodiment of the present invention. FIG. 4 is an explanatory diagram of the manufacturing process of a lead frame for a semiconductor integrated circuit according to a second embodiment of the present invention. FIG. 5 is a sectional view of a metal plate used in a lead frame for a semiconductor integrated circuit according to a second embodiment of the present invention. 1.12... Iron/nickel alloy plate, 2.11... Copper plate or copper alloy plate, 3.13...
・Metal plate used in the semiconductor integrated circuit lead frame according to the embodiment of the present invention, 5... Connection conductor, 6... Island, 7... Support bar 8... Holding bar

Claims (1)

【特許請求の範囲】 [1]銅を主成分とする金属板(2)が、鉄とニッケル
とを主成分とする金属板(1)をもって挟まれて圧着さ
れて形成された単一の板が成形されてなる ことを特徴とする半導体集積回路用リードフレーム。 [2]鉄とニッケルとを主成分とする金属板(12)が
、銅を主成分とする金属板(11)をもって挟まれて圧
着されて形成された単一の板が成形されてなる ことを特徴とする半導体集積回路用リードフレーム。
[Claims] [1] A single plate formed by sandwiching and press-bonding a metal plate (2) mainly composed of copper with a metal plate (1) mainly composed of iron and nickel. A lead frame for a semiconductor integrated circuit, characterized by being formed by molding. [2] A single plate is formed by sandwiching and crimping a metal plate (12) mainly composed of iron and nickel with a metal plate (11) mainly composed of copper. A lead frame for semiconductor integrated circuits featuring:
JP32711889A 1989-12-19 1989-12-19 Lead frame for semiconductor integrated circuit Pending JPH03188659A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32711889A JPH03188659A (en) 1989-12-19 1989-12-19 Lead frame for semiconductor integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32711889A JPH03188659A (en) 1989-12-19 1989-12-19 Lead frame for semiconductor integrated circuit

Publications (1)

Publication Number Publication Date
JPH03188659A true JPH03188659A (en) 1991-08-16

Family

ID=18195503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32711889A Pending JPH03188659A (en) 1989-12-19 1989-12-19 Lead frame for semiconductor integrated circuit

Country Status (1)

Country Link
JP (1) JPH03188659A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0629436A (en) * 1992-07-13 1994-02-04 Hitachi Metals Ltd Material for lead frame
US5367191A (en) * 1991-09-18 1994-11-22 Fujitsu Limited Leadframe and resin-sealed semiconductor device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242653A (en) * 1984-05-16 1985-12-02 Daido Steel Co Ltd Composite material for lead frame

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242653A (en) * 1984-05-16 1985-12-02 Daido Steel Co Ltd Composite material for lead frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367191A (en) * 1991-09-18 1994-11-22 Fujitsu Limited Leadframe and resin-sealed semiconductor device
US5753535A (en) * 1991-09-18 1998-05-19 Fujitsu Limited Leadframe and resin-sealed semiconductor device
JPH0629436A (en) * 1992-07-13 1994-02-04 Hitachi Metals Ltd Material for lead frame

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