JP4908750B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4908750B2 JP4908750B2 JP2004341029A JP2004341029A JP4908750B2 JP 4908750 B2 JP4908750 B2 JP 4908750B2 JP 2004341029 A JP2004341029 A JP 2004341029A JP 2004341029 A JP2004341029 A JP 2004341029A JP 4908750 B2 JP4908750 B2 JP 4908750B2
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- electrode
- connection
- protruding
- semiconductor chip
- connection electrode
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- 239000004065 semiconductor Substances 0.000 title claims description 205
- 229910052751 metal Inorganic materials 0.000 claims description 94
- 239000002184 metal Substances 0.000 claims description 94
- 230000008018 melting Effects 0.000 claims description 47
- 238000002844 melting Methods 0.000 claims description 47
- 239000007787 solid Substances 0.000 claims description 42
- 229910045601 alloy Inorganic materials 0.000 claims description 28
- 239000000956 alloy Substances 0.000 claims description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010931 gold Substances 0.000 claims description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052737 gold Inorganic materials 0.000 claims description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910052738 indium Inorganic materials 0.000 claims description 7
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 27
- 230000001681 protective effect Effects 0.000 description 14
- 238000009792 diffusion process Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- -1 that is Substances 0.000 description 1
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Description
図7は、フリップチップ接続構造を有する従来の半導体装置の構造を示す図解的な断面図である。この半導体装置51は、接続面52aを有する配線基板52と、機能素子が形成された機能面53aを有し、この機能面53aを接続面52aに対向させて接続された半導体チップ53とを含んでいる。
半導体チップ53の機能面53aには、機能素子に接続された電極パッド54が形成されている。機能面53aは、表面保護膜55で覆われており、この表面保護膜55には、電極パッド54を露出させる開口55aが形成されている。そして、開口55a上には、電極パッド54の開口55aからの露出面を覆うように、拡散防止膜56が形成されている。この拡散防止膜56の厚さは、図7に示すように、表面保護膜55の厚さより薄く、拡散防止膜56は、電極パッド54や表面保護膜55の表面から実質的に突出していない。
そのため、接続部材57は、通常、配線基板52と半導体チップ53との対向方向において、接続パッド58および拡散防止膜56よりもはるかに大きな厚みを有する。
J. D. Wu et al., "Electromigration Reliability of SnAgXCuX Flip Chip Interconnects", 54th Electron. Components and Technol. Conf., 2004, p.961
このため、図7に示す半導体装置51のように、接続パッド58と電極パッド54との間に、これらよりもはるかに大きな厚みを有する接続部材57が介在されている構成では、配線基板52と半導体チップ53との間の電気抵抗が大きなものとなる。このような大きな電気抵抗を有する半導体装置51は、動作速度が遅いため、高速デバイスへの適用が不向きである。とくに、配線基板52や半導体チップ53に微細パターンの配線(接続パッド58や電極パッド54を含む。)が形成されている場合、接続部材57の電気抵抗は無視できないものとなる。
請求項2記載の発明は、接続面と、この接続面から突出した接続電極とを有する固体装置と、機能面と、この機能面から突出した突起電極とを有し、上記機能面を上記固体装置の上記接続面に対向させて、上記機能面と上記接続面との間に所定間隔を保持して接合された半導体チップと、上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置である。
請求項3記載の発明は、接続面と、この接続面から突出した接続電極を有する固体装置と、機能面と、この機能面から突出した突起電極を有し、上記機能面と上記接続面との間に所定間隔を保持して、上記突起電極を上記接続電極に向かい合わせて接合した半導体チップと、上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置である。
請求項4記載の発明は、接続面と、この接続面から突出した接続電極を有する固体装置と、機能面と、この機能面から突出した突起電極を有し、上記機能面と上記接続面との間に所定間隔を保持して、上記突起電極を上記接続電極に接合した半導体チップと、上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置である。
BGA型半導体装置は、金属からなる接続電極が突出して形成された接続面を有する固体装置としての基板と、金属からなる突起電極が突出して形成された機能面を有し、この機能面を上記基板の上記接続面に対向させて、上記機能面と上記接続面との間に所定間隔を保持して接合された半導体チップと、上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記基板の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材とを備えていてもよく、この場合、上記機能面と上記接続面との対向方向において、上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であり、かつ、上記接続電極が上記突起電極よりも高くてもよく、この場合、上記接続電極は、上記半導体チップに対向する上面(10a,43a)と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面(10b,43b)とを有していてもよく、この場合、上記突起電極は、上記固体装置に対向する上面(13a,46a)と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面(13b,46b)とを有していてもよく、この場合、上記接続電極の上面および側面ならびに上記突起電極の上面および側面のほぼ全域が、上記接続部材に覆われていてもよい。
半導体装置は、金属からなる接続電極が突出して形成された接続面を有する固体装置としての基板と、金属からなる突起電極が突出して形成された機能面を有し、上記機能面と上記接続面との間に所定間隔を保持して、上記基板に接合された半導体チップと、上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記基板の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材とを備えていてもよく、この場合、上記接続電極の突出する高さと上記突起電極の突出する高さとの和が上記所定間隔の2分の1以上であり、かつ、上記接続電極が上記突起電極よりも高くてもよく、この場合、上記接続電極は、上記半導体チップに対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有していてもよく、この場合、上記突起電極は、上記固体装置に対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有していてもよく、この場合、上記接続電極の上面および側面ならびに上記突起電極の上面および側面のほぼ全域が、上記接続部材に覆われていてもよい。
上記BGA型半導体装置または上記半導体装置において、上記接続部材は、上記低融点金属とは異なる金属と上記低融点金属との合金からなる反応層を有してもよい。
接続電極や突起電極は、たとえば、請求項11および12に記載のように、金(Au)、銅(Cu)、もしくはニッケル(Ni)、またはこれらの合金からなるものとすることができる。一方、接続部材を構成する金属材料、すなわち、接続電極および突起電極より固相線温度が低い低融点金属としては、たとえば、請求項13記載のように、錫、鉛、もしくはインジウム、またはこれらの合金が挙げられるが、これらの金属材料の電気抵抗率は、いずれも、金、銅およびニッケルの電気抵抗率より高い。すなわち、請求項14記載のように、上記低融点金属の電気抵抗率は、上記接続電極および上記突起電極を構成する金属の電気抵抗率より高いものとすることができる。
接続部材を構成する金属材料の固相線温度は、たとえば、60℃ないし370℃であることが好ましい。
固体装置の接続面と半導体チップの機能面との間は、請求項16記載のように、樹脂材料で封止されていることが好ましい。この樹脂材料により、機能面や、接続部材と接続電極および突起電極との接続部を保護することができるとともに、接続面や機能面に沿う面内方向の剪断応力を低減できる。
また、接続電極や突起電極が上面および側面を有する場合、この半導体装置の製造工程において、接続電極や突起電極の上面および側面が低融点金属の融液に覆われた状態とすることにより、当該融液の表面張力を効果的に利用して、固体装置に対して半導体チップを対向方向と直交する方向にセルフアライメントすることができる。
請求項15記載の発明は、上記低融点金属が、上記接続電極および上記突起電極を構成する金属より柔らかいことを特徴とする請求項1ないし14のいずれかに記載の半導体装置である。
錫、鉛、インジウムまたはこれらの合金は、金、銅またはニッケルより柔らかい。したがって、接続電極と突起電極との間に、接続部材のうち低融点金属のみからなる部分が存在していると、その部分は、接続電極や突起電極より柔らかいため、その部分に応力が集中して接続部材が破断しやすい。
上記の製造方法において、固体装置および半導体チップを加熱する温度および時間を制御することにより、低融点金属の融液が固化した後、接続電極と突起電極との間が反応層で埋められた状態とすることができる。
固体装置は配線基板であってもよく、この場合、接続電極は、配線基板上の配線に接続された接続パッドであってもよい。
請求項10記載の発明は、上記接続電極および上記突起電極は、上記接続電極と上記突起電極との接続部分の位置が、上記半導体チップ側または上記固体装置側に片寄るように、それぞれの高さが異ならせて形成されていることを特徴とする請求項9記載の半導体装置である。
図1は、本発明の第1の実施形態に係る半導体装置の構造を示す図解的な断面図である。
この半導体装置1は、接続面2aを有する配線基板2と、機能素子が形成された機能面3aを有し、この機能面3aを接続面2aに対向させて接続(フリップチップ接続)された半導体チップ3とを含んでいる。配線基板2と半導体チップ3とは、導電部材5によって、所定間隔を保つように互いに機械的に接続されている。また、配線基板2と半導体チップ3とは、導電部材5を介して電気的に接続されている。
配線基板2において接続面2aと反対側の外部接続面2bには、金属ボール4が設けられている。金属ボール4は、配線基板2の内部および/または表面で再配線されて、接続面2a側の導電部材5に電気的に接続されている。この半導体装置1は、金属ボール4を介して、実装基板に接続できる。
配線基板2の接続面2aには、接続パッド10が形成されている。接続パッド10は、たとえば、金(Au)、銅(Cu)、ニッケル(Ni)またはこれらの合金からなり、図示しない配線により、金属ボール4(図1参照)に接続されている。
半導体チップ3の機能面3aには、機能素子に接続された電極パッド11が形成されている。電極パッド11は、たとえば、アルミニウム、銅、金、またはこれらの合金からなる。また、機能面3aは、表面保護膜12で覆われており、この表面保護膜12には、電極パッド11を露出させる開口12aが形成されている。表面保護膜12は、たとえば、シリコン窒化膜、シリコン酸化膜、ポリイミドからなる。
接続パッド10は、半導体チップ3(突起電極13)に対向する上面10a、および配線基板2と半導体チップ3との対向方向にほぼ沿った側面10bを有している。同様に、突起電極13は、配線基板2(接続パッド10)に対向する上面13a、および配線基板2と半導体チップ3との対向方向にほぼ沿った側面13bを有している。突起電極13は、接続パッド10とほぼ同じ大きさおよび形状を有している。接続パッド10と突起電極13とは、接続面2aを垂直に見下ろす平面視において、ほぼ重なるように配置されている。
接続面2aからの接続パッド10の高さD1と、機能面3aからの突起電極13の高さD2との和は、接続面2aと機能面3aとの間隔D3の2分の1以上である(下記数式(1)参照)。
高さD1は、たとえば、1μm〜250μmとすることができ、高さD2は、たとえば、1μm〜250μmとすることができる。間隔D3は、たとえば、2μm〜500μmとすることができる。
低融点金属、すなわち、錫、鉛、インジウムまたはこれらの合金からなる接続部材15は、金、銅またはニッケルからなる接続パッド10や突起電極13より電気抵抗率が高い。しかし、上記数式(1)の関係により、接続面2aと機能面3aとの対向方向において、電気抵抗率が高い接続部材15の長さ(厚さ)は短い。したがって、この半導体装置1における配線基板2と半導体チップ3との間の電気抵抗は低い。このため、この半導体装置1は、高速デバイスへの適用に適している。
この半導体装置1は、配線基板2の接続パッド10と半導体チップ3の突起電極13との間に、低融点金属を介在させた状態で、配線基板2および半導体チップ3を、低融点金属の固相線温度以上(好ましくは、液相線温度以上)の温度に、所定時間加熱することにより得られる。低融点金属がその固相線温度(液相線温度)以上の温度に加熱されることにより、低融点金属の融液が生じ、この融液が固化することにより接続部材15が得られる。
また、接続パッド10や突起電極13の上面10a,13aおよび側面10b,13bが低融点金属の融液に覆われた状態とすることにより、当該融液の表面張力を効果的に利用して、配線基板2に対する半導体チップ3のセルフアライメントを行うことができる。
この半導体装置21は、図2に示す半導体装置1の接続部材15の代わりに、接続部材22を備えている。接続部材22は、接続パッド10と突起電極13との間を埋め(満たし)、接続パッド10の側面10bと突起電極13の側面13bとを覆うように形成された反応層22aと、この反応層22aの側方を覆う未反応層22bとを含む。
図2を参照して、錫、鉛、インジウムまたはこれらの合金である低融点金属は、金、銅およびニッケルより柔らかい。したがって、半導体装置1のように、接続パッド10と突起電極13との間に、接続部材15のうち実質的に低融点金属のみからなる部分が存在していると、その部分は接続パッド10や突起電極13より柔らかいため、その部分に応力が集中して破断しやすい。
図4は、本発明の第3の実施形態に係る半導体装置の構造を示す図解的な断面図である。
配線基板32において第1半導体チップ33が接合された面とは反対側の面には、外部接続部材としての半田ボール35が設けられている。配線基板32のボンディングワイヤ37が接続された電極パッドは、配線基板32の表面や内部で再配線されて、半田ボール35に接続されている。
図5は、半導体装置31の導電部材38付近を拡大して示す図解的な断面図である。
第1半導体チップ33の機能面33aには、機能素子に接続された電極パッド41が形成されている。また、機能面33aは、表面保護膜42で覆われており、この表面保護膜42には、電極パッド41を露出させる開口42aが形成されている。開口42aからの電極パッド41の露出面上には、表面保護膜42の表面から突出する突起電極43が形成されている。
突起電極43は、第2半導体チップ34(突起電極46)に対向する上面43a、および第1半導体チップ33と第2半導体チップ34との対向方向にほぼ沿った側面43bを有している。同様に、突起電極46は、第1半導体チップ33(突起電極43)に対向する上面46a、および第1半導体チップ33と第2半導体チップ34との対向方向にほぼ沿った側面46bを有している。突起電極43と突起電極46とは、ほぼ同じ大きさおよび形状を有している。突起電極43と突起電極46とは、機能面33a,34aを垂直に見下ろす平面視において、ほぼ重なるように配置されている。
突起電極43の上面43aおよび側面43b、ならびに突起電極46の上面46aおよび側面46bは、そのほぼ全域が接続部材47に覆われている。これにより、半導体装置31の信頼性が向上されているとともに、突起電極43と突起電極46との接続強度が向上されている。
D4+D5≧(1/2)・D6 (2)
すなわち、機能面33aと機能面34aとの対向方向において、電気抵抗率が高い接続部材47の長さ(厚さ)は短い。したがって、この半導体装置31における第1半導体チップ33と第2半導体チップ34との間の電気抵抗は低い。
この半導体装置31Aにおいて、機能面33aからの突起電極43の高さD7と、機能面34aからの突起電極46の高さD8との和は、機能面33aと機能面34aとの間隔D9の2分の1以上である(下記数式(3)参照)。
また、この半導体装置31Aでは、機能面34aからの突起電極46の高さD8は、機能面33aからの突起電極43の高さD7より大きくされている(D7<D8)。
この半導体装置31Aに温度サイクルが与えられると、導電部材38の熱膨張係数とアンダーフィル層36の熱膨張係数との差により、導電部材38に応力が加わる。この応力は、機能面33a,34aに垂直な方向に関して、対向する機能面33aと機能面34aとの中間部C(図6に一点鎖線で示す。)で最大となる。
図6に示す半導体装置31Aにおいて、機能面33aからの突起電極43の高さD7と、機能面34aからの突起電極46の高さD8とは異なっていればよく、機能面33aからの突起電極43の高さD7が、機能面34aからの突起電極46の高さD8より大きくされていてもよい(D7>D8)。
2 配線基板
2a 接続面
3 半導体チップ
3a,33a,34a 機能面
10 接続パッド
10a 接続パッドの上面
10b 接続パッドの側面
13,43,46 突起電極
13a,43a,46a 突起電極の上面
13b,43b,46b 突起電極の側面
15,22,47 接続部材
22a 反応層
33 第1半導体チップ
34 第2半導体チップ
D1 接続面からの接続パッドの高さ
D2,D4,D5,D7,D8 機能面からの突起電極の高さ
D3 接続面と機能面との間隔
D6,D9 機能面と機能面との間隔
Claims (16)
- 金属からなる接続電極が突出して形成された接続面を有する固体装置と、
金属からなる突起電極が突出して形成された機能面を有し、この機能面を上記固体装置の上記接続面に対向させて、上記機能面と上記接続面との間に所定間隔を保持して接合された半導体チップと、
上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、
上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置。 - 接続面と、この接続面から突出した接続電極とを有する固体装置と、
機能面と、この機能面から突出した突起電極とを有し、上記機能面を上記固体装置の上記接続面に対向させて、上記機能面と上記接続面との間に所定間隔を保持して接合された半導体チップと、
上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、
上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置。 - 接続面と、この接続面から突出した接続電極を有する固体装置と、
機能面と、この機能面から突出した突起電極を有し、上記機能面と上記接続面との間に所定間隔を保持して、上記突起電極を上記接続電極に向かい合わせて接合した半導体チップと、
上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、
上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置。 - 接続面と、この接続面から突出した接続電極を有する固体装置と、
機能面と、この機能面から突出した突起電極を有し、上記機能面と上記接続面との間に所定間隔を保持して、上記突起電極を上記接続電極に接合した半導体チップと、
上記接続電極および上記突起電極より固相線温度が低い低融点金属を含み、上記固体装置の上記接続電極と上記半導体チップの上記突起電極とを接続する接続部材であって、上記接続電極または上記突起電極を構成する金属と上記低融点金属との合金からなる反応層と、上記反応層の側方を覆い上記低融点金属からなる未反応層とを有する接続部材とを備え、
上記接続電極の高さと上記突起電極の高さとの和が上記所定間隔の2分の1以上であることを特徴とする半導体装置。 - 上記接続電極は、上記半導体チップに対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有し、
上記突起電極は、上記固体装置に対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有し、
上記接続電極の上面および側面ならびに上記突起電極の上面および側面のほぼ全域が、上記接続部材に覆われていることを特徴とする請求項1ないし4のいずれかに記載の半導体装置。 - 上記接続電極は、上記半導体チップに対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有し、
上記突起電極は、上記固体装置に対向する上面と、上記固体装置と上記半導体チップとの対向方向にほぼ沿った側面とを有し、
上記反応層は、上記接続電極の側面および上記突起電極の側面を覆っていることを特徴とする請求項1ないし5のいずれかに記載の半導体装置。 - 上記反応層は、上記接続電極と上記突起電極との間を埋めるように配置されていることを特徴とする請求項1ないし6のいずれかに記載の半導体装置。
- 上記接続電極と上記突起電極とが同じ材料からなることを特徴とする請求項1ないし7のいずれかに記載の半導体装置。
- 上記固体装置は、上記半導体チップとは別の半導体チップであることを特徴とする請求項1ないし8のいずれかに記載の半導体装置。
- 上記接続電極および上記突起電極は、上記接続電極と上記突起電極との接続部分の位置が、上記半導体チップ側または上記固体装置側に片寄るように、それぞれの高さが異ならせて形成されていることを特徴とする請求項9記載の半導体装置。
- 上記接続電極が、金、銅、もしくはニッケル、またはこれらの合金からなることを特徴とする請求項1ないし10のいずれかに記載の半導体装置。
- 上記突起電極が、金、銅、もしくはニッケル、またはこれらの合金からなることを特徴とする請求項1ないし11のいずれかに記載の半導体装置。
- 上記低融点金属が、錫、鉛、もしくはインジウム、またはこれらの合金からなることを特徴とする請求項1ないし12のいずれかに記載の半導体装置。
- 上記低融点金属の電気抵抗率が、上記接続電極および上記突起電極を構成する金属の電気抵抗率より高いことを特徴とする請求項1ないし13のいずれかに記載の半導体装置。
- 上記低融点金属が、上記接続電極および上記突起電極を構成する金属より柔らかいことを特徴とする請求項1ないし14のいずれかに記載の半導体装置。
- 上記機能面と上記接続面との間が、封止樹脂で封止されていることを特徴とする請求項1ないし15のいずれかに記載の半導体装置。
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CNA2005800267666A CN101002313A (zh) | 2004-11-25 | 2005-09-01 | 半导体装置 |
KR1020077001900A KR101151542B1 (ko) | 2004-11-25 | 2005-09-01 | 반도체 장치 |
PCT/JP2005/015979 WO2006057097A1 (ja) | 2004-11-25 | 2005-09-01 | 半導体装置 |
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