JP6176590B2 - Semiconductor device manufacturing apparatus and manufacturing method - Google Patents

Semiconductor device manufacturing apparatus and manufacturing method Download PDF

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JP6176590B2
JP6176590B2 JP2013210465A JP2013210465A JP6176590B2 JP 6176590 B2 JP6176590 B2 JP 6176590B2 JP 2013210465 A JP2013210465 A JP 2013210465A JP 2013210465 A JP2013210465 A JP 2013210465A JP 6176590 B2 JP6176590 B2 JP 6176590B2
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semiconductor chip
metal
semiconductor device
wiring metal
bonding
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JP2015074001A (en
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修二 足立
修二 足立
祐治 阪上
祐治 阪上
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Nissan Motor Co Ltd
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    • 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
    • H01L2224/74Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
    • H01L2224/75Apparatus for connecting with bump connectors or layer connectors
    • 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
    • H01L2224/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
    • H01L2224/8319Arrangement of the layer connectors prior to mounting
    • H01L2224/83192Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
    • 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
    • H01L2224/80Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
    • H01L2224/83Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
    • H01L2224/8338Bonding interfaces outside the semiconductor or solid-state body
    • H01L2224/83385Shape, e.g. interlocking features

Description

本発明は、半導体チップと配線金属とを接合して成る半導体装置の製造装置、及び製造方法に関するものである。   The present invention relates to a manufacturing apparatus and a manufacturing method of a semiconductor device formed by bonding a semiconductor chip and a wiring metal.

近年の半導体装置、特に、大電流密度の所謂ハイパワーモジュールと称する半導体装置においては、高温環境下でも使用可能であることが要求されている。そのため、半導体装置の実装構造においては、高温に保持されたり、高温熱サイクルを受けたりした場合の高温耐久性に優れた接合部が強く望まれている。また、環境保全の観点からすると、Pb(鉛)フリーの接合技術が必須となっている。   2. Description of the Related Art Recent semiconductor devices, particularly semiconductor devices called high power modules having a large current density, are required to be usable even in a high temperature environment. Therefore, in a mounting structure of a semiconductor device, a joint having excellent high temperature durability when held at a high temperature or subjected to a high temperature thermal cycle is strongly desired. From the viewpoint of environmental protection, a Pb (lead) -free joining technique is essential.

このような半導体装置の実装のための接合には、現状では、Sn(錫)−Ag(銀)−Cu(銅)系のはんだが広く使われているが、使用温度がはんだの融点(例えば200℃程度)以下に制限される。また、例えば、電極がCuである接合部においては、界面にCu−Sn系の脆い金属間化合物層が生成し、高温耐久性に乏しいものとなる。そのため、接合部の高温耐久性を確保するために、いろいろな試みがなされている。   Currently, Sn (tin) -Ag (silver) -Cu (copper) based solder is widely used for bonding for mounting such semiconductor devices, but the operating temperature is the melting point of the solder (for example, It is limited to about 200 ° C. or less. Further, for example, in a joint where the electrode is Cu, a Cu-Sn brittle intermetallic compound layer is generated at the interface, resulting in poor high-temperature durability. Therefore, various attempts have been made to ensure the high temperature durability of the joint.

例えば、金属ナノ粒子の活性な表面エネルギーを利用して、低温にて凝集、接合する低温接合工法が提案されている(特許文献1参照)。この接合工法を用いれば、凝集した後の接合界面はバルク金属となるため、高い、高温耐久性を有する。   For example, a low-temperature bonding method has been proposed in which active surface energy of metal nanoparticles is used to aggregate and bond at a low temperature (see Patent Document 1). If this joining method is used, the joining interface after agglomeration becomes a bulk metal, and thus has high durability at high temperatures.

特開2004−128357号公報JP 2004-128357 A

しかしながら、特許文献1に記載の低温接合工法では、金属ナノ粒子として、Au(金)、Ag(銀)といった貴金属を用い、このような金属ナノ粒子の表面に有機物を修飾したような構造をとるため、非常に高コストなものとなり、実際に適用するには現実的ではない。また、粒子が凝集した構造となり、しかも有機物が接合プロセス時にガス化して、残存することから接合部にはボイドが存在するため、継手強度のバラツキの大きいものとなるという問題がある。   However, in the low-temperature bonding method described in Patent Document 1, noble metals such as Au (gold) and Ag (silver) are used as metal nanoparticles, and the surface of such metal nanoparticles is modified with an organic substance. Therefore, it becomes very expensive and not practical to apply. In addition, there is a problem that the structure has a structure in which particles are agglomerated, and the organic matter is gasified during the joining process and remains, so that voids exist in the joint, resulting in large variations in joint strength.

なお、高温はんだとしてはこの他に、Au系の組成を有するものとして、Au−Ge(ゲルマニウム)系はんだや、Au−Sn系はんだがあるが、これらも、貴金属であるAuを用いているため、非常に高コストなものとなり、上記同様、現実的ではない。   Other high-temperature solders include Au-Ge (germanium) solders and Au-Sn solders that have an Au-based composition, but these also use precious metal Au. It becomes very expensive and is not realistic as described above.

本発明は、上記従来の状況に鑑みてなされたものであって、その目的とするところは、低コストで高温耐久性に優れた接合を可能にすると共に、その接合の際に、接合部の酸化を阻止して充分な接合強度を確保しつつ、半導体チップの上下にある電極間の沿面絶縁距離を適切に維持することができる半導体装置の製造装置を提供することにある。また、上記の半導体装置の製造装置を用いた製造方法と、その製造方法により製造した高温耐久性に優れた半導体装置を提供することにある。   The present invention has been made in view of the above-described conventional situation. The object of the present invention is to enable bonding with low temperature and excellent high-temperature durability, and at the time of the bonding, An object of the present invention is to provide a semiconductor device manufacturing apparatus capable of appropriately maintaining a creeping insulation distance between electrodes above and below a semiconductor chip while preventing oxidation and securing a sufficient bonding strength. Another object of the present invention is to provide a manufacturing method using the semiconductor device manufacturing apparatus and a semiconductor device manufactured by the manufacturing method and having excellent high-temperature durability.

本発明に係わる半導体装置の製造装置は、半導体チップの接合面と、配線金属の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材を介在させると共に、上記接合面の酸化皮膜を破壊するための微細凹凸を上記接合面及びインサート材表面の少なくとも一部に設け、接合界面の少なくとも一部において半導体チップと配線金属とを直接接合して成る半導体装置を製造するものである。   In the semiconductor device manufacturing apparatus according to the present invention, an insert material containing a metal that causes a eutectic reaction with the metal of each bonding surface is interposed between the bonding surface of the semiconductor chip and at least the bonding surface of the wiring metal, A semiconductor device in which fine irregularities for destroying the oxide film on the bonding surface are provided on at least a part of the bonding surface and the surface of the insert material, and the semiconductor chip and the wiring metal are directly bonded at least at a part of the bonding interface. To manufacture.

そして、半導体装置の製造装置は、上記半導体チップ及び配線金属を相対的に加圧する加圧手段と、上記半導体チップ及び配線金属を加熱する加熱手段と、上記半導体チップと配線金属との接合界面から半導体チップの外側へ排出された共晶反応溶融物及び酸化皮膜から成る排出物を所定の厚さに押圧する押圧手段とを備えた構成としており、上記構成をもって従来の課題を解決するための手段としている。   The semiconductor device manufacturing apparatus includes: a pressurizing unit that relatively pressurizes the semiconductor chip and the wiring metal; a heating unit that heats the semiconductor chip and the wiring metal; and a bonding interface between the semiconductor chip and the wiring metal. Means for solving the conventional problems with the above-mentioned configuration, comprising a pressing means for pressing the eutectic reaction melt discharged to the outside of the semiconductor chip and the discharge formed of the oxide film to a predetermined thickness It is said.

本発明に係わる半導体装置の製造方法は、半導体チップの接合面と、配線金属の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材を介在させると共に、上記接合面の酸化皮膜を破壊するための微細凹凸を上記接合面及びインサート材表面の少なくとも一部に設ける。   In the method for manufacturing a semiconductor device according to the present invention, an insert material containing a metal that causes a eutectic reaction with the metal of each bonding surface is interposed between the bonding surface of the semiconductor chip and at least the bonding surface of the wiring metal. Fine irregularities for breaking the oxide film on the joining surface are provided on at least a part of the joining surface and the insert material surface.

そして、製造方法は、上記半導体チップ及び配線金属を相対的に加圧しつつ加熱し、上記半導体チップと配線金属との接合界面に生じた共晶反応溶融物を上記酸化皮膜と共に排出物として半導体チップの外側へ排出すると共に、その排出物を所定の厚さに押圧し、接合界面の少なくとも一部において上記半導体チップと配線金属とを直接接合することを特徴としている。   In the manufacturing method, the semiconductor chip and the wiring metal are heated while being relatively pressurized, and the eutectic reaction melt generated at the bonding interface between the semiconductor chip and the wiring metal is discharged together with the oxide film as a semiconductor chip. The semiconductor chip and the wiring metal are directly bonded to each other at at least part of the bonding interface.

本発明に係わる半導体装置は、上記製造方法により製造されたもので、半導体チップと配線金属を備え、半導体チップ及び配線金属が、双方の接合界面の少なくとも一部において直接接合され、この直接接合部の周囲において、共晶反応溶融物及び酸化皮膜から成る排出物が所定の厚さに押圧された状態で存在していることを特徴としている。   The semiconductor device according to the present invention is manufactured by the above manufacturing method, and includes a semiconductor chip and a wiring metal, and the semiconductor chip and the wiring metal are directly bonded at at least a part of the bonding interface between the two, and the direct bonding portion. In the surrounding area, the eutectic reaction melt and the effluent composed of the oxide film are present in a pressed state with a predetermined thickness.

本発明の半導体装置の製造装置及び製造方法では、インサート材を介して半導体チップ及び配線金属を相対的に加圧しながら加熱することで、配線金属の接合面やインサート材表面に設けた微細凹凸により接合面の酸化皮膜を破壊すると共に、接合面とインサート材との間に共晶反応を生じさせ、低温、低加圧で酸化皮膜を除去して、半導体チップと配線金属とを強固に接合する。ここで、半導体チップや配線金属の接合面には、アルミニウム系金属を採用することができると共に、インサート材には、アルミニウム系金属と共晶反応を生じるものとして、Zu(亜鉛)を主成分とする金属を採用することができる。   In the semiconductor device manufacturing apparatus and the manufacturing method of the present invention, the semiconductor chip and the wiring metal are heated while being relatively pressed through the insert material, so that the fine unevenness provided on the bonding surface of the wiring metal and the surface of the insert material. In addition to destroying the oxide film on the bonding surface, it causes a eutectic reaction between the bonding surface and the insert material, removes the oxide film at low temperature and low pressure, and firmly bonds the semiconductor chip and the wiring metal. . Here, an aluminum-based metal can be used for the bonding surface of the semiconductor chip or the wiring metal, and the insert material is mainly composed of Zu (zinc), which causes a eutectic reaction with the aluminum-based metal. The metal to be used can be adopted.

また、半導体装置の製造装置及び製造方法では、半導体チップと配線金属との接合界面に生じた共晶反応溶融物を上記酸化皮膜と共に排出物として半導体チップの外側へ排出すると共に、その排出物を所定の厚さに押圧する。よって、インサート材は、上記の接合界面に生じた共晶反応溶融物及び酸化皮膜を排出物として半導体チップの外側へ排出し得る大きさ(体積)であり、このような大きさにすることで接合部が大気に接触してないようにする。また、排出物を所定の厚さに押圧することで、半導体チップの上下にある電極間の沿面絶縁距離が上記排出物によって短くなるのを防止する。   Further, in the semiconductor device manufacturing apparatus and manufacturing method, the eutectic reaction melt generated at the bonding interface between the semiconductor chip and the wiring metal is discharged to the outside of the semiconductor chip together with the oxide film, and discharged. Press to a predetermined thickness. Therefore, the insert material has a size (volume) that can discharge the eutectic reaction melt and the oxide film generated at the bonding interface to the outside of the semiconductor chip as discharged materials. Ensure that the joint is not in contact with the atmosphere. Further, by pressing the discharge to a predetermined thickness, the creeping insulation distance between the electrodes on the top and bottom of the semiconductor chip is prevented from being shortened by the discharge.

このようにして、半導体装置の製造装置及び製造方法によれば、貴金属やPbを用いることなく、低コストで高温耐久性に優れた接合を可能にすると共に、その接合の際に、接合部の酸化を阻止して充分な接合強度を確保しつつ、半導体チップの上下にある電極間の沿面絶縁距離を適切に維持することができる。   Thus, according to the semiconductor device manufacturing apparatus and manufacturing method, it is possible to perform bonding with low temperature and excellent high-temperature durability without using noble metal or Pb, and at the time of bonding, The creeping insulation distance between the electrodes on the upper and lower sides of the semiconductor chip can be appropriately maintained while preventing the oxidation and ensuring a sufficient bonding strength.

本発明に係わる半導体装置の製造装置及び製造方法の第1実施形態を説明する平面図(A)、半導体装置の接合前の断面図(B)、及び半導体装置の接合後の断面図(C)である。1A is a plan view illustrating a first embodiment of a semiconductor device manufacturing apparatus and manufacturing method according to the present invention, FIG. 1B is a cross-sectional view of the semiconductor device before bonding, and FIG. 2C is a cross-sectional view of the semiconductor device after bonding. It is. 図1に示す製造装置及び製造方法により製造した半導体装置を示す断面図(A)、インサート材が不足している場合を示す断面図(B)、インサート材が過多である場合を示す(C)である。Sectional drawing (A) which shows the semiconductor device manufactured with the manufacturing apparatus and manufacturing method shown in FIG. 1, sectional drawing (B) which shows the case where insert material is insufficient, and shows the case where insert material is excessive (C) It is. 本発明に係わる半導体装置の製造装置及び製造方法の第2実施形態を説明する半導体装置の接合前の断面図(A)、半導体チップ及び配線金属を加圧した状態を示す断面図(B)、及び半導体装置の接合後の断面図(C)である。Sectional view (A) before joining of semiconductor device for explaining second embodiment of manufacturing apparatus and manufacturing method of semiconductor device according to the present invention, sectional view (B) showing a state where semiconductor chip and wiring metal are pressed, FIG. 10C is a cross-sectional view after bonding the semiconductor device. 図3に示す製造装置及び製造方法における接合面温度及び圧力の変化を示すグラフである。It is a graph which shows the change of the joint surface temperature and pressure in the manufacturing apparatus and manufacturing method shown in FIG. 本発明に係わる半導体装置の製造装置の第3実施形態を説明する断面図である。It is sectional drawing explaining 3rd Embodiment of the manufacturing apparatus of the semiconductor device concerning this invention. 本発明に係わる半導体装置の製造装置の第4実施形態を説明する要部の断面図である。It is sectional drawing of the principal part explaining 4th Embodiment of the manufacturing apparatus of the semiconductor device concerning this invention.

〈第1実施形態〉
図1(A)及び(B)に示す半導体装置の製造装置は、以下に述べる構造を備えた半導体装置1を製造するものである。半導体装置1は、半導体チップ2の接合面と、配線金属3の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材4を介在させている。さらに、半導体装置1は、上記接合面の酸化皮膜を破壊するための微細凹凸5を上記接合面及びインサート材4の表面の少なくとも一部に設け、接合界面の少なくとも一部において半導体チップ2と配線金属3とを直接接合して成るものである。
<First Embodiment>
The semiconductor device manufacturing apparatus shown in FIGS. 1A and 1B manufactures a semiconductor device 1 having the structure described below. In the semiconductor device 1, an insert material 4 containing a metal that causes a eutectic reaction with the metal of each bonding surface is interposed between the bonding surface of the semiconductor chip 2 and at least the bonding surface of the wiring metal 3. Further, the semiconductor device 1 is provided with fine irregularities 5 for breaking the oxide film on the bonding surface on at least a part of the bonding surface and the surface of the insert material 4, and the semiconductor chip 2 and the wiring at least at a part of the bonding interface. It is formed by directly joining the metal 3.

図示例の半導体チップ2は、平面視で正方形状を成し、基板2Aの上下に上側電極2B及び下側電極2Cを夫々設けた三層構造である。この実施形態の半導体チップ2は、少なくとも下側電極2Cがアルミニウム系金属から成り、この下側電極2Cの下面が配線金属3との接合面である。   The semiconductor chip 2 in the illustrated example has a square shape in plan view, and has a three-layer structure in which an upper electrode 2B and a lower electrode 2C are provided above and below a substrate 2A, respectively. In the semiconductor chip 2 of this embodiment, at least the lower electrode 2C is made of an aluminum-based metal, and the lower surface of the lower electrode 2C is a joint surface with the wiring metal 3.

配線金属3は、平面視で半導体チップ1よりも充分に大きい正方形状を成すと共に、アルミニウム系合金から成るものであって、その上面に微細凹凸5が形成してあり、微細凹凸5の表面が半導体チップ2との接合面である。この微細凹凸5は、応力を集中させて酸化皮膜の破壊を促進させる機能さえあれば、その形状や数に制限はなく、例えば、断面三角形状や断面台形状の突条を並列に配置したものや、四角錐状の突部を縦横に配列したものを採用することができる。   The wiring metal 3 has a square shape that is sufficiently larger than the semiconductor chip 1 in a plan view, and is made of an aluminum-based alloy. It is a joint surface with the semiconductor chip 2. The fine unevenness 5 is not limited in its shape and number as long as it has a function of concentrating stress and promoting the destruction of the oxide film. For example, the protrusions having a triangular cross section or a trapezoidal cross section are arranged in parallel. Alternatively, a quadrangular pyramid-shaped protrusion arranged in a horizontal and vertical direction can be employed.

上記した半導体チップ2の下側電極2Cや配線金属3の素材であるアルミニウム系金属としては、純アルミニウム材(工業用純アルミニウム)やAlを主成分として80%以上含有する合金材を用いることができる。これらアルミニウム系金属から成る下側電極2Cや配線金属3の表面には、Alを主成分とする強固な酸化皮膜が生成している。 As the aluminum-based metal that is the material of the lower electrode 2C and the wiring metal 3 of the semiconductor chip 2 described above, a pure aluminum material (industrial pure aluminum) or an alloy material containing 80% or more of Al as a main component is used. it can. A strong oxide film mainly composed of Al 2 O 3 is formed on the surfaces of the lower electrode 2C and the wiring metal 3 made of these aluminum-based metals.

インサート材4は、Alと共晶反応を生じる金属を含むものであって、具体的には、Zn(亜鉛)を主成分とする金属(純亜鉛、亜鉛合金)や、Znと共晶反応を生じる金属とZnとの合金、例えばZnとAlを主成分とする合金、ZnとMg(マグネシウム)を主成分とする合金、ZnとCu(銅)を主成分とする合金、ZnとSn(錫)を主成分とする合金、ZnとAg(銀)を主成分とする合金、ZnとMgとAlを主成分とする合金、ZnとCu(銅)とAlを主成分とする合金、ZnとSn(錫)とAlを主成分とする合金、ZnとAg(銀)とAlを主成分とする合金の薄板や箔を用いることができる。なお、本発明において、「主成分」とは、上記金属の含有量の合計が80%以上であることを意味するものとする。   The insert material 4 includes a metal that causes a eutectic reaction with Al. Specifically, the insert material 4 has a metal (pure zinc, zinc alloy) containing Zn (zinc) as a main component, or a eutectic reaction with Zn. Alloys of the resulting metal and Zn, for example, alloys containing Zn and Al as main components, alloys containing Zn and Mg (magnesium) as main components, alloys containing Zn and Cu (copper) as main components, Zn and Sn (tin) ), An alloy mainly composed of Zn and Ag (silver), an alloy mainly composed of Zn, Mg and Al, an alloy mainly composed of Zn, Cu (copper) and Al, and Zn An alloy mainly composed of Sn (tin) and Al, or a thin plate or foil of an alloy mainly composed of Zn, Ag (silver), and Al can be used. In the present invention, the “main component” means that the total content of the metals is 80% or more.

また、インサート材4は、半導体チップ2と配線金属3との接合界面に生じた共晶反応溶融物及び酸化皮膜を排出物(B)として半導体チップ1の外側へ排出し得る大きさ(体積)を有する板状の部材である。図示例のインサート材4は、半導体チップ2と配線金属3との接合部を大気に接触させないように、平面視で半導体チップ1よりもやや大きい正方形状である。   Further, the insert material 4 has a size (volume) that can be discharged to the outside of the semiconductor chip 1 as a discharge (B) from the eutectic reaction melt and oxide film generated at the bonding interface between the semiconductor chip 2 and the wiring metal 3. It is a plate-shaped member which has. The insert material 4 in the illustrated example has a square shape slightly larger than the semiconductor chip 1 in plan view so as not to bring the joint between the semiconductor chip 2 and the wiring metal 3 into contact with the atmosphere.

上記の半導体装置1を製造するための製造装置は、上記半導体チップ2及び配線金属3を相対的に加圧する加圧手段11と、上記半導体チップ2及び配線金属3を加熱する加熱手段12を備えている。また、製造装置は、上記半導体チップ2と配線金属3との接合界面から半導体チップ2の外側へ排出物(B)を所定の厚さに押圧する押圧手段13を備えている。   A manufacturing apparatus for manufacturing the semiconductor device 1 includes a pressurizing unit 11 that relatively pressurizes the semiconductor chip 2 and the wiring metal 3, and a heating unit 12 that heats the semiconductor chip 2 and the wiring metal 3. ing. In addition, the manufacturing apparatus includes pressing means 13 that presses the discharged material (B) to a predetermined thickness from the bonding interface between the semiconductor chip 2 and the wiring metal 3 to the outside of the semiconductor chip 2.

加圧手段11は、半導体チップ2の上側に配置された加圧部11Aや、加圧部11Aを昇降させる昇降駆動機構(図示せず)などで構成されている。加圧部11Aは、平面視で半導体チップ2に対応する大きさを有し、半導体チップ2の上面に接触してこれを加圧する。   The pressurizing unit 11 includes a pressurizing unit 11A disposed on the upper side of the semiconductor chip 2 and an elevating drive mechanism (not shown) that moves the pressurizing unit 11A up and down. The pressing unit 11A has a size corresponding to the semiconductor chip 2 in a plan view, and contacts and pressurizes the upper surface of the semiconductor chip 2.

加熱手段12は、半導体装置1を載置する基盤に周知の加熱源を内蔵したものである。これにより、先の加圧手段11は、加熱手段12との間で半導体チップ2及び配線金属3を相対的に加圧することとなる。   The heating means 12 has a well-known heating source built in a base on which the semiconductor device 1 is placed. As a result, the previous pressurizing unit 11 pressurizes the semiconductor chip 2 and the wiring metal 3 relatively with the heating unit 12.

押圧手段13は、加圧手段11とともに半導体チップ2に上側に配置されると共に、平面視で加圧手段11の加圧部11Aを囲繞する枠状の押圧部13Aや、押圧部13Aを昇降させる昇降駆動機構(図示せず)などで構成されている。なお、加圧手段11及び押圧手段13の昇降駆動機構は、夫々別の機構であっても良いし、共通の機構にすることも可能である。   The pressing unit 13 is disposed on the upper side of the semiconductor chip 2 together with the pressing unit 11, and lifts and lowers the frame-shaped pressing unit 13 </ b> A that surrounds the pressing unit 11 </ b> A of the pressing unit 11 in a plan view. It is comprised by the raising / lowering drive mechanism (not shown) etc. In addition, the raising / lowering drive mechanism of the pressurizing means 11 and the pressing means 13 may be different mechanisms, or may be a common mechanism.

次に、上記構成を備えた半導体装置の製造装置の動作とともに半導体装置の製造方法を説明する。
半導体装置1の製造装置及び製造方法では、半導体チップ2を配線金属3に接合するに際し、図1(B)に示すように、半導体チップ2の接合面と、配線金属3の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材4を介在させる。また、配線金属3には、接合面の酸化皮膜を破壊するための微細凹凸5が設けてある。
Next, a semiconductor device manufacturing method will be described together with the operation of the semiconductor device manufacturing apparatus having the above-described configuration.
In the manufacturing apparatus and manufacturing method of the semiconductor device 1, when the semiconductor chip 2 is bonded to the wiring metal 3, the bonding surface of the semiconductor chip 2 and at least the bonding surface of the wiring metal 3 are connected as shown in FIG. An insert material 4 containing a metal that causes a eutectic reaction with the metal of each joint surface is interposed therebetween. The wiring metal 3 is provided with fine irregularities 5 for breaking the oxide film on the joint surface.

次に、上記の製造装置及び製造方法は、加圧手段11により半導体チップ2及び配線金属3を相対的に加圧しつつ、加熱手段12により半導体チップ2及び配線金属3を加熱する。このとき、上記の製造装置及び製造方法では、アルミニウム系金属から成る半導体チップ(下側電極2C)2及び配線金属3の表面に形成されている酸化皮膜を微細凹凸5により破壊して、アルミニウム系金属とインサート材4とを接触させ、半導体チップ2と配線金属3との接合界面に、Alとインサート材4に含まれる金属との共晶反応を生じさせる。   Next, in the manufacturing apparatus and the manufacturing method, the semiconductor chip 2 and the wiring metal 3 are heated by the heating unit 12 while the semiconductor chip 2 and the wiring metal 3 are relatively pressurized by the pressurizing unit 11. At this time, in the manufacturing apparatus and the manufacturing method described above, the oxide film formed on the surfaces of the semiconductor chip (lower electrode 2C) 2 and the wiring metal 3 made of an aluminum-based metal is broken by the fine unevenness 5 to form an aluminum-based metal. The metal and the insert material 4 are brought into contact with each other, and a eutectic reaction between Al and the metal contained in the insert material 4 is caused at the bonding interface between the semiconductor chip 2 and the wiring metal 3.

すなわち、上記の製造装置及び製造方法では、微細凹凸5の先端に応力が集中するため、比較的低い加圧力によって、チップへのダメージを与えることなく酸化皮膜を破壊することができる。そして、この破壊部分を介してアルミニウム系金属とインサート材4とが接触し、この接触部を起点として生じた共晶反応が接合面全体に拡大することによって、接合面の酸化皮膜が低温度(共晶温度)で除去されるので、アルミニウム系金属同士のダイレクトな接合が可能となる。   That is, in the manufacturing apparatus and manufacturing method described above, stress concentrates on the tips of the fine irregularities 5, and therefore, the oxide film can be destroyed without damaging the chip with a relatively low applied pressure. Then, the aluminum-based metal and the insert material 4 come into contact with each other through the fracture portion, and the eutectic reaction generated from the contact portion expands to the entire joint surface, so that the oxide film on the joint surface has a low temperature ( Since it is removed at the eutectic temperature), it becomes possible to directly join aluminum-based metals.

そして、上記の製造装置及び製造方法は、この共晶反応溶融物を酸化皮膜と共に排出物(B)として半導体チップ2の外側に排出し、接合界面の少なくとも一部において半導体チップ2と配線金属3のアルミニウム系金属同士を直接接合する。この際、上記の製造装置及び製造方法では、図1(C)に示すように、半導体チップ2の外側に排出された排出物Bを押圧手段13により所定の厚さに押圧して平坦に形成する。   Then, the manufacturing apparatus and the manufacturing method described above discharge the eutectic reaction melt together with the oxide film to the outside of the semiconductor chip 2 as a discharge (B), and at least part of the bonding interface, the semiconductor chip 2 and the wiring metal 3 are discharged. These aluminum-based metals are directly joined together. At this time, in the above manufacturing apparatus and manufacturing method, as shown in FIG. 1 (C), the discharge B discharged outside the semiconductor chip 2 is pressed to a predetermined thickness by the pressing means 13 to be formed flat. To do.

なお、押圧手段13による押圧は、半導体チップ2の外側に排出された排出物Bに対して押圧部13Aを下降させ、その排出物Bを圧潰して平坦に形成しても良いし、予め下降させた押圧部13Aと配線金属3との隙間に排出物Bが排出されるようにして、その排出物Bを平坦に形成しても良い。また、排出物Bの排出と押圧部13Aの下降とがほぼ同時に行われるようにしても良い。つまり、押圧手段13は、当該製造装置の構造などに応じて、押圧部13Aの下降のタイミングを適宜選択することができ、いずれのタイミングでも排出物Bを平坦に押圧形成し得る。   Note that the pressing by the pressing means 13 may be performed by lowering the pressing portion 13A with respect to the discharge B discharged to the outside of the semiconductor chip 2 and crushing the discharge B, or may be lowered in advance. The discharged material B may be formed flat so that the discharged material B is discharged into the gap between the pressed portion 13A and the wiring metal 3. Further, the discharge B and the lowering of the pressing portion 13A may be performed almost simultaneously. That is, the pressing means 13 can appropriately select the lowering timing of the pressing portion 13A according to the structure of the manufacturing apparatus and the like, and the discharge B can be pressed and formed flat at any timing.

このように、本発明の半導体装置の製造装置及び製造方法では、インサート材4を介して半導体チップ2及び配線金属3を相対的に加圧しながら加熱することで、微細凹凸5による酸化皮膜の破壊と、接合面及びインサート材4の間の共晶反応を生じさせ、低温、低加圧で半導体チップ2と配線金属3とを強固に接合する。この際、上記の製造装置及び製造方法では、半導体チップ2や配線金属3の接合面には、アルミニウム系金属を採用し、インサート材4には、Zuを主成分とする金属を採用しているので、貴金属やPbを用いることなく、低コストで高温耐久性に優れた接合が可能になる。   Thus, in the semiconductor device manufacturing apparatus and manufacturing method of the present invention, the semiconductor chip 2 and the wiring metal 3 are heated through the insert material 4 while being relatively pressurized, whereby the oxide film is broken by the fine irregularities 5. Then, a eutectic reaction between the bonding surface and the insert material 4 is caused to firmly bond the semiconductor chip 2 and the wiring metal 3 at a low temperature and a low pressure. At this time, in the manufacturing apparatus and the manufacturing method described above, an aluminum-based metal is used for the bonding surface of the semiconductor chip 2 and the wiring metal 3, and a metal containing Zu as a main component is used for the insert material 4. Therefore, it is possible to perform bonding with low cost and excellent high-temperature durability without using noble metal or Pb.

また、上記の製造装置及び製造方法では、半導体チップ2の外側に排出された共晶反応溶融物及び酸化皮膜である排出物Bを所定の厚さに押圧することで、半導体チップ2の上下にある電極2B,2C間の沿面絶縁距離(図2に示す符号R)が排出物Bによって短くなるのを防止する。これにより、上記の製造装置及び製造方法によれば、半導体チップ2及び配線金属3の接合の際に、接合部の酸化を阻止して充分な接合強度を確保しつつ、半導体チップ2の上下にある電極2B,2C間の沿面絶縁距離(R)を適切に維持することができる。   Further, in the above manufacturing apparatus and manufacturing method, the eutectic reaction melt discharged to the outside of the semiconductor chip 2 and the discharge B that is an oxide film are pressed to a predetermined thickness so that the semiconductor chip 2 is The creeping insulation distance (reference symbol R shown in FIG. 2) between the electrodes 2B and 2C is prevented from being shortened by the discharge B. Thereby, according to said manufacturing apparatus and manufacturing method, when joining the semiconductor chip 2 and the wiring metal 3, while preventing the oxidation of a junction part and ensuring sufficient joining strength, it is the upper and lower sides of the semiconductor chip 2 The creeping insulation distance (R) between a certain electrode 2B, 2C can be maintained appropriately.

上記の製造装置及び製造方法により製造された半導体装置1は、図2(A)に示すように、半導体チップ2と配線金属3を備え、半導体チップ2及び配線金属3が、双方の接合界面の少なくとも一部において直接接合され、この直接接合部の周囲において、共晶反応溶融物及び酸化皮膜から成る排出物Bが所定の厚さに押圧された状態で存在している。   As shown in FIG. 2A, the semiconductor device 1 manufactured by the manufacturing apparatus and the manufacturing method includes the semiconductor chip 2 and the wiring metal 3, and the semiconductor chip 2 and the wiring metal 3 Directly bonded at least in part, and around the directly bonded portion, the discharge B composed of the eutectic reaction melt and the oxide film exists in a state of being pressed to a predetermined thickness.

ここで、上記の如くインサート材4を用いて半導体チップ2と配線金属3とを接合する場合、図2(B)に示すように、インサート材4の供給が少ないと、半導体チップ2と配線金属3との間に隙間Sが形成されて接合中の大気遮断が不充分になり、接合部が酸化されて接合強度が低下するおそれがある。他方、図2(C)に示すように、インサート材4の供給が多いと、半導体チップ2の外側において、排出物Bが、半導体チップ2の上面に近づくように厚くはみ出した状態(符号D)になる。その結果、半導体チップ2の上下の電極2B,2C間の沿面絶縁距離Rが小さくなる。この沿面絶縁距離Rの減少は電極間の短絡を防止するうえで好ましくない。   Here, when the semiconductor chip 2 and the wiring metal 3 are bonded using the insert material 4 as described above, if the supply of the insert material 4 is small as shown in FIG. The gap S is formed between the two and the air blocking during the bonding becomes insufficient, and the bonded portion may be oxidized to reduce the bonding strength. On the other hand, as shown in FIG. 2 (C), when the supply of the insert material 4 is large, the discharge B protrudes thickly so as to approach the upper surface of the semiconductor chip 2 on the outside of the semiconductor chip 2 (symbol D). become. As a result, the creeping insulation distance R between the upper and lower electrodes 2B and 2C of the semiconductor chip 2 is reduced. This decrease in the creeping insulation distance R is not preferable for preventing a short circuit between the electrodes.

これに対して、上記の製造装置及び製造方法により製造された半導体装置1は、図2(A)に示すように、インサート材4の供給が充分であるから、半導体チップ2と配線金属3との接合中の大気遮断が充分になされ、接合部の酸化を阻止して充分な接合強度が確保される。また、共晶反応溶融物及び酸化皮膜から成る排出物Bを所定の厚さに押圧した状態にするので、半導体チップ2の上側電極2Bと排出物Bとの距離が短くなることも無く、半導体チップ2の上下にある電極2B,2C間の沿面絶縁距離Rが適切に維持されることとなる。これにより、上下の電極2B,2C間の短絡を防ぐことができる。   On the other hand, the semiconductor device 1 manufactured by the above manufacturing apparatus and manufacturing method has sufficient supply of the insert material 4 as shown in FIG. The air is sufficiently blocked during the joining, and the joining portion is prevented from being oxidized and sufficient joining strength is ensured. Further, since the discharge B made of the eutectic reaction melt and the oxide film is pressed to a predetermined thickness, the distance between the upper electrode 2B of the semiconductor chip 2 and the discharge B is not shortened, and the semiconductor The creeping insulation distance R between the electrodes 2B and 2C above and below the chip 2 is appropriately maintained. Thereby, the short circuit between the upper and lower electrodes 2B and 2C can be prevented.

以下、図3〜図6に基づいて、本発明の半導体装置の製造装置の他の実施形態を説明する。なお、以下の各実施形態において、第1実施形態と同一の構成部位は、同一符号を付して詳細な説明を省略する。   Hereinafter, another embodiment of the semiconductor device manufacturing apparatus of the present invention will be described with reference to FIGS. In the following embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

〈第2実施形態〉
図3に示す半導体装置の製造装置は、第1実施形態のものと同様の基本構成を備えると共に、加圧手段11において半導体チップ2に接触する加圧部11Aと、押圧手段12において共晶反応溶融物及び酸化皮膜である排出物Bに接触する押圧部13Aとが、加圧体Pとして一体化されている。この場合、加圧手段11及び押圧手段13は、実質的に一構成であって、共通の昇降駆動機構により加圧体Pを昇降駆動する。加圧体Pは、その下面に半導体チップ2の体積に相当する容積の凹部を有し、この凹部の底面が加圧部11Aであり、凹部の周囲が押圧部13Aである。
Second Embodiment
The semiconductor device manufacturing apparatus shown in FIG. 3 has the same basic configuration as that of the first embodiment, and the pressurizing unit 11A that contacts the semiconductor chip 2 in the pressurizing unit 11 and the eutectic reaction in the pressing unit 12. The pressing portion 13A that comes into contact with the discharged matter B that is a melt and an oxide film is integrated as a pressurizing body P. In this case, the pressurizing means 11 and the pressing means 13 have substantially one configuration and drive the pressurizing body P up and down by a common lift driving mechanism. The pressurizing body P has a concave portion having a volume corresponding to the volume of the semiconductor chip 2 on its lower surface, and the bottom surface of the concave portion is the pressurizing portion 11A, and the periphery of the concave portion is the pressing portion 13A.

上記構成を備えた半導体装置の製造装置は、図3(A)に示すように、加熱手段12上に、半導体チップ2,配線金属3及びインサート材4をセットした後、図3(B)及び図4に示すように、加圧体Pを下降させて、加圧部11Aで半導体チップ2及び配線金属3を相対的に加圧し、その状態を保持する。この際、押圧部13Aは、配線金属3との間に隙間を形成している。   As shown in FIG. 3A, the semiconductor device manufacturing apparatus having the above configuration sets the semiconductor chip 2, the wiring metal 3 and the insert material 4 on the heating means 12, and then the process shown in FIG. As shown in FIG. 4, the pressurizing body P is lowered, the semiconductor chip 2 and the wiring metal 3 are relatively pressurized by the pressurizing part 11A, and the state is maintained. At this time, the pressing portion 13 </ b> A forms a gap with the wiring metal 3.

次に、上記の製造装置は、図3(C)に示すように、加圧部11Aによる加圧を保持したままで、加熱手段12により、インサート材4が溶融する温度になるまで昇温させ、その状態を所定時間保持する。   Next, as shown in FIG. 3C, the above manufacturing apparatus raises the temperature by the heating means 12 until the temperature at which the insert material 4 is melted while holding the pressure applied by the pressure unit 11A. The state is held for a predetermined time.

これにより、製造装置は、半導体チップ(下側電極2C)2及び配線金属3の表面に形成されている酸化皮膜を微細凹凸5により破壊して、接合面とインサート材4とを接触させ、半導体チップ2と配線金属3との接合界面に、インサート材4に含まれる金属との共晶反応を生じさせる。   As a result, the manufacturing apparatus destroys the oxide film formed on the surfaces of the semiconductor chip (lower electrode 2C) 2 and the wiring metal 3 with the fine irregularities 5 to bring the bonding surface into contact with the insert material 4 and thereby the semiconductor. A eutectic reaction with the metal contained in the insert material 4 is caused at the bonding interface between the chip 2 and the wiring metal 3.

そしてさらに、製造装置は、共晶反応溶融物を酸化皮膜と共に排出物Bとして半導体チップ2の外側に排出し、接合界面の少なくとも一部において半導体チップ2と配線金属3のアルミニウム系金属同士を直接接合する。この際、排出物Bは、加圧体Pの押圧部13Aと配線金属3との間の隙間に排出され、所定の厚さに押圧された状態のままで固化することとなる。   Further, the manufacturing apparatus discharges the eutectic reaction melt together with the oxide film as discharge B to the outside of the semiconductor chip 2 and directly connects the aluminum-based metals of the semiconductor chip 2 and the wiring metal 3 at least at a part of the bonding interface. Join. At this time, the discharge B is discharged into the gap between the pressing portion 13A of the pressurizing body P and the wiring metal 3, and solidifies while being pressed to a predetermined thickness.

このようにして、この実施形態の半導体装置の製造装置にあっても、先に述べた図2(A)に示すような半導体装置1が得られることとなり、貴金属やPbを用いることなく、低コストで高温耐久性に優れた接合を可能にすると共に、その接合の際に、接合部の酸化を阻止して充分な接合強度を確保しつつ、半導体チップ2の上下にある電極2B,2C間の沿面絶縁距離(図2中の符号R)を適切に維持することができる。さらに、上記の製造装置によれば、加圧手段11の加圧部11Aと、押圧手段13の押圧部13Aとを加圧体Pとして一体化したので、装置構造の簡略化を実現することができ、制御も容易に行うことができる。   In this way, even in the semiconductor device manufacturing apparatus of this embodiment, the semiconductor device 1 as shown in FIG. 2A described above can be obtained. The bonding between the electrodes 2B and 2C on the upper and lower sides of the semiconductor chip 2 can be performed at a high cost and with excellent high-temperature durability, and at the time of the bonding, the oxidation of the bonding portion is prevented to ensure sufficient bonding strength. The creeping insulation distance (R in FIG. 2) can be appropriately maintained. Furthermore, according to the manufacturing apparatus described above, the pressing unit 11A of the pressing unit 11 and the pressing unit 13A of the pressing unit 13 are integrated as the pressing body P, so that the apparatus structure can be simplified. And can be controlled easily.

〈第3実施形態〉
図5に示す半導体装置の製造装置は、第2実施形態と同様に、加圧手段11の加圧部11Aと、押圧手段13の押圧部13Aとを加圧体Pとして一体化したうえで、その加圧部11A及び押圧部13Aを上向きに配置した構成である。すなわち、図5に示す製造装置は、図3に示すものと上下逆の構成である。
<Third Embodiment>
The semiconductor device manufacturing apparatus shown in FIG. 5 is similar to the second embodiment, in which the pressurizing unit 11A of the pressurizing unit 11 and the pressing unit 13A of the pressing unit 13 are integrated as a pressurizing body P. It is the structure which has arrange | positioned the pressurization part 11A and the press part 13A upward. That is, the manufacturing apparatus shown in FIG. 5 has a configuration upside down from that shown in FIG.

上記の半導体装置の製造装置にあっても、先の実施形態と同様に、低コストで高温耐久性に優れた接合を可能にすると共に、接合部の酸化阻止による接合強度の確保や、上下の電極2B,2C間における沿面絶縁距離(図2中の符号R)の維持を実現する。また、上記の製造装置は、装置構造やその制御の簡略化を実現するほかに、加圧部11Aを形成する凹部を上向きにした加圧体Pを用いるので、半導体チップ2、配線電極3及びインサート材4の位置決めが容易であり、これらの位置決め精度の向上に伴って半導体装置1の品質向上に貢献することができる。   Even in the semiconductor device manufacturing apparatus, as in the previous embodiment, it is possible to perform bonding with low cost and excellent high-temperature durability, as well as ensuring bonding strength by preventing oxidation of the bonded portion, Maintenance of the creeping insulation distance (symbol R in FIG. 2) between the electrodes 2B and 2C is realized. In addition to the simplification of the device structure and its control, the above manufacturing apparatus uses the pressurizing body P with the concave portion forming the pressurizing portion 11A facing upward, so that the semiconductor chip 2, the wiring electrode 3 and the The positioning of the insert material 4 is easy, and it can contribute to the quality improvement of the semiconductor device 1 with the improvement of the positioning accuracy.

〈第4実施形態〉
図6に示す半導体装置の製造装置は、共晶反応溶融物及び酸化皮膜である排出物Bに対して、加圧手段11の加圧部11A及び押圧手段13の押圧部13Aの濡れ性が、配線金属3の濡れ性よりも低いものとなっている。図示例の製造装置は、先の実施形態のものと同様に、加圧部11A及び押圧部13Aを一体的に備えた加圧体Pを備えている。
<Fourth embodiment>
In the semiconductor device manufacturing apparatus shown in FIG. 6, the wettability of the pressurizing unit 11 </ b> A of the pressurizing unit 11 and the pressing unit 13 </ b> A of the pressing unit 13 with respect to the eutectic reaction melt and the discharge B that is an oxide film The wettability of the wiring metal 3 is lower. The manufacturing apparatus of the illustrated example includes a pressurizing body P integrally including a pressurizing unit 11A and a pressing unit 13A, as in the previous embodiment.

上記構成を備えた半導体装置の製造装置は、先の実施形態と同様に、低コストで高温耐久性に優れた接合を可能にすると共に、接合部の酸化阻止による接合強度の確保や、上下の電極2B,2C間における沿面絶縁距離(図2中の符号R)の維持を実現し、さらに、装置構造やその制御の簡略化を実現する。   The semiconductor device manufacturing apparatus having the above configuration enables bonding with low cost and excellent high-temperature durability, as well as securing the bonding strength by preventing oxidation of the bonded portion, Maintenance of the creeping insulation distance (symbol R in FIG. 2) between the electrodes 2B and 2C is realized, and the device structure and control thereof are simplified.

そして、製造装置は、共晶反応溶融物に対する濡れ性を、加圧部11A及び押圧部13Aの表面で低くし、且つ配線金属3の表面で高くしたので、図示のように排出物Bを押圧部13Aで押圧した際、排出物Bが、加圧体P側に付着し難くなると共に、配線金属3側に馴染むように付着する。これにより、製造された半導体装置1において、半導体チップ2の上側電極2Bから固化した排出物Bに至るまでの距離が充分に離れ、上下の電極2B,2C間の沿面絶縁距離(図2中の符号R)を維持することができる。   And since the manufacturing apparatus made low the wettability with respect to a eutectic reaction melt on the surface of the pressurization part 11A and the press part 13A, and raised it on the surface of the wiring metal 3, it presses the discharge B as shown in the figure. When pressed by the portion 13A, the discharge B is less likely to adhere to the pressurizing body P side and adheres to the wiring metal 3 side. Thereby, in the manufactured semiconductor device 1, the distance from the upper electrode 2B of the semiconductor chip 2 to the solidified discharge B is sufficiently separated, and the creeping insulation distance between the upper and lower electrodes 2B and 2C (in FIG. 2) The code R) can be maintained.

本発明の半導体装置の製造装置及び製造方法は、その構成が上記各実施形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲で、各構成部位の材料、形状及び数などの細部を適宜変更することが可能である。   The semiconductor device manufacturing apparatus and manufacturing method according to the present invention are not limited to the above embodiments, and the material, shape, number, and the like of each component are within the scope of the present invention. Details can be changed as appropriate.

1 半導体装置
2 半導体チップ
2B 上側電極
2C 下側電極
3 配線金属
4 インサート材
5 微細凹凸
11 加圧手段
11A 加圧部
12 加熱手段
13 押圧手段
13A 押圧部
B 排出物
R 沿面絶縁距離
DESCRIPTION OF SYMBOLS 1 Semiconductor device 2 Semiconductor chip 2B Upper electrode 2C Lower electrode 3 Wiring metal 4 Insert material 5 Fine unevenness 11 Pressure means
11A Pressurizing part 12 Heating means 13 Pressing means 13A Pressing part B Discharge R Creeping insulation distance

Claims (7)

半導体チップの接合面と、配線金属の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材を介在させると共に、上記接合面の酸化皮膜を破壊するための微細凹凸を上記接合面及びインサート材表面の少なくとも一部に設け、接合界面の少なくとも一部において半導体チップと配線金属とを直接接合して成る半導体装置を製造するための製造装置であって、
上記半導体チップ及び配線金属を相対的に加圧する加圧手段と、
上記半導体チップ及び配線金属を加熱する加熱手段と、
上記半導体チップと配線金属との接合界面から半導体チップの外側へ排出された共晶反応溶融物及び酸化皮膜から成る排出物を所定の厚さに押圧する押圧手段とを備えたことを特徴とする半導体装置の製造装置。
An insert material containing a metal that causes a eutectic reaction with the metal of each bonding surface is interposed between the bonding surface of the semiconductor chip and at least the bonding surface of the wiring metal, and for destroying the oxide film on the bonding surface. A manufacturing apparatus for manufacturing a semiconductor device in which fine irregularities are provided on at least a part of the bonding surface and the surface of the insert material, and a semiconductor chip and a wiring metal are directly bonded at at least a part of a bonding interface,
A pressurizing means for relatively pressurizing the semiconductor chip and the wiring metal;
Heating means for heating the semiconductor chip and the wiring metal;
And a pressing means for pressing the eutectic reaction melt discharged from the bonding interface between the semiconductor chip and the wiring metal to the outside of the semiconductor chip and the discharge formed of the oxide film to a predetermined thickness. Semiconductor device manufacturing equipment.
半導体チップが、接合面にアルミニウム系金属を備えると共に、配線金属が、少なくとも接合面にアルミニウム系金属を備え、インサート材が、Znを主成分とする金属であることを特徴とする請求項1に記載の半導体装置の製造装置。   The semiconductor chip includes an aluminum-based metal on a bonding surface, the wiring metal includes at least an aluminum-based metal on the bonding surface, and the insert material is a metal mainly composed of Zn. The manufacturing apparatus of the semiconductor device of description. 加圧手段において半導体チップ又は配線金属に接触する加圧部と、押圧手段において排出物に接触する押圧部とが一体化してあることを特徴とする請求項1又は2に記載の半導体装置の製造装置。   3. The semiconductor device according to claim 1, wherein the pressing unit that contacts the semiconductor chip or the wiring metal in the pressing unit and the pressing unit that contacts the discharged material in the pressing unit are integrated. apparatus. 加圧手段の加圧部及び押圧手段の押圧部を上向きに配置したことを特徴とする請求項3に記載の半導体装置の製造装置。   4. The apparatus for manufacturing a semiconductor device according to claim 3, wherein the pressing part of the pressing means and the pressing part of the pressing means are arranged upward. 排出物に対して、加圧部及び押圧部の濡れ性が、配線金属の濡れ性よりも低いことを特徴とする請求項1又は4に記載の半導体装置の製造装置。   5. The apparatus for manufacturing a semiconductor device according to claim 1, wherein the wettability of the pressurizing part and the pressing part is lower than the wettability of the wiring metal with respect to the discharged matter. 半導体チップの接合面と、配線金属の少なくとも接合面との間に、各接合面の金属と共晶反応を生じる金属を含むインサート材を介在させると共に、上記接合面の酸化皮膜を破壊するための微細凹凸を上記接合面及びインサート材表面の少なくとも一部に設け、
上記半導体チップ及び配線金属を相対的に加圧しつつ加熱し、
上記半導体チップと配線金属との接合界面に生じた共晶反応溶融物を上記酸化皮膜と共に排出物として半導体チップの外側へ排出すると共に、排出物を所定の厚さに押圧し、
接合界面の少なくとも一部において上記半導体チップと配線金属とを直接接合することを特徴とする半導体装置の製造方法。
An insert material containing a metal that causes a eutectic reaction with the metal of each bonding surface is interposed between the bonding surface of the semiconductor chip and at least the bonding surface of the wiring metal, and for destroying the oxide film on the bonding surface. Provide fine irregularities on at least a part of the joint surface and insert material surface,
Heating the semiconductor chip and the wiring metal while relatively pressing,
The eutectic reaction melt generated at the bonding interface between the semiconductor chip and the wiring metal is discharged to the outside of the semiconductor chip as the discharge together with the oxide film, and the discharge is pressed to a predetermined thickness,
A method of manufacturing a semiconductor device, comprising: directly bonding the semiconductor chip and a wiring metal at least at a part of a bonding interface.
請求項6に記載の半導体装置の製造方法により製造された半導体装置であって、
半導体チップと配線金属を備え、半導体チップ及び配線金属が、双方の接合界面の少なくとも一部において直接接合され、この直接接合部の周囲において、共晶反応溶融物及び酸化皮膜から成る排出物が所定の厚さに押圧された状態で存在していることを特徴とする半導体装置。
A semiconductor device manufactured by the method for manufacturing a semiconductor device according to claim 6,
A semiconductor chip and a wiring metal are provided, and the semiconductor chip and the wiring metal are directly bonded at at least a part of the bonding interface between the two, and around the direct bonding portion, a discharge composed of a eutectic reaction melt and an oxide film is predetermined. A semiconductor device characterized in that the semiconductor device exists in a state where the thickness is pressed.
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