JP5736136B2 - チップおよびチップ−基板複合アセンブリ - Google Patents
チップおよびチップ−基板複合アセンブリ Download PDFInfo
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- JP5736136B2 JP5736136B2 JP2010178568A JP2010178568A JP5736136B2 JP 5736136 B2 JP5736136 B2 JP 5736136B2 JP 2010178568 A JP2010178568 A JP 2010178568A JP 2010178568 A JP2010178568 A JP 2010178568A JP 5736136 B2 JP5736136 B2 JP 5736136B2
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- layer
- chip
- solder
- solder layer
- substrate
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- 239000000758 substrate Substances 0.000 title claims description 30
- 239000002131 composite material Substances 0.000 title claims description 10
- 229910000679 solder Inorganic materials 0.000 claims description 82
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000013078 crystal Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000004544 sputter deposition Methods 0.000 claims description 9
- 229910000510 noble metal Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 4
- 229910000756 V alloy Inorganic materials 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000005240 physical vapour deposition Methods 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910003465 moissanite Inorganic materials 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- H01L2924/102—Material of the semiconductor or solid state bodies
- H01L2924/1025—Semiconducting materials
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- H01L2924/156—Material
- H01L2924/157—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2924/15717—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 400 C and less than 950 C
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- H01L2924/156—Material
- H01L2924/157—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2924/15738—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950 C and less than 1550 C
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Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Die Bonding (AREA)
Description
2 層集合体
3 ベース層
4 第1の中間層
5 半田層
6 貴金属層
7 半田
8 DCB基板
9 基板本体
10 銅層
G1 第1の界面
G2 第2の界面
K1 第1の接触層
K2 第2の接触層
P 孔
S1 第1の層
S2 第2の層
S3 第3の層
Claims (13)
- 半田接続部を作るための層集合体(2)が、半導体材料から形成されたチップ本体(1)の一面に設けられ、前記層集合体(2)が、一層が他の層の上に重なりかつ物理的コーティング法によって作製される複数の金属層(3、4、5、6)から形成され、半田付け可能な半田層(5)が前記層集合体(2)の表面に位置する貴金属層(6)と前記チップ本体(1)との間に設けられるチップにおいて、
前記半田層(5)が、前記コーティング法の中断によって形成される少なくとも1つの界面(G1、G2)を有し、
前記半田層(5)が、NiまたはNi/V合金から実質的に形成されており、
前記半田層(5)を形成する結晶の平均結晶サイズが、前記界面(G1、G2)から垂直に離れる少なくとも一方向に増大しており、
前記半田層(5)を形成する結晶の平均結晶サイズが、さらなる金属層に対する境界に位置する接触領域(K2)から前記界面(G2)に向かう方向に増大している、ことを特徴とするチップ。 - 前記チップ本体(1)に接する前記層集合体(2)のベース層(3)が、アルミニウムから実質的に形成されている、請求項1に記載のチップ。
- 前記半田層(5)と前記ベース層(3)との間に設けられた第1の中間層(4)が、TiもしくはCr、またはTiとWの合金から実質的に形成されている、請求項1または2に記載のチップ。
- 前記貴金属層(6)と前記半田層(5)との間に設けられた第2の中間層が、Tiから実質的に形成されている、請求項1〜3のいずれか一項に記載のチップ。
- 前記半導体材料が、Si、SiC、SiGe、GaAsの1つから実質的に形成されている、請求項1〜4のいずれか一項に記載のチップ。
- 前記半田層(5)に含まれる孔(P)の頻度が、前記界面(G1、G2)の領域で最大である、請求項1〜5のいずれか一項に記載のチップ。
- 前記半田層(5)が、Ni、Ti、W、またはNi/V合金から選択される異なる金属から作製された少なくとも2つの層を有する、請求項1〜6のいずれか一項に記載のチップ。
- 前記半田層(5)の厚さが、0.7〜1.2μmである、請求項1〜7のいずれか一項に記載のチップ。
- 前記半田層(5)の厚さが0.8〜1.0μmである、請求項8に記載のチップ。
- 前記物理的コーティング法が、PVDまたはスパッタリング法である、請求項1〜9のいずれか一項に記載のチップ。
- 請求項1〜10のいずれか一項に記載のチップが前記半田層(5)に接続された半田(7)によって基板(8)に接続されている、チップ−基板複合アセンブリ。
- 前記基板(8)がDCB基板であり、前記半田(7)が、前記DCB基板上に設けられた銅層(10)に接している、請求項11に記載のチップ−基板複合アセンブリ。
- 前記半田(7)が、SnおよびAgから実質的に形成された合金から作られている、請求項11または12に記載のチップ−基板複合アセンブリ。
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US10692830B2 (en) * | 2017-10-05 | 2020-06-23 | Texas Instruments Incorporated | Multilayers of nickel alloys as diffusion barrier layers |
US20210217919A1 (en) * | 2018-05-28 | 2021-07-15 | Ecole Polytechnique Federale De Lausanne (Epfl) | Excitonic device and operating methods thereof |
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JP2011082497A (ja) | 2011-04-21 |
CN101996954B (zh) | 2013-11-06 |
CN101996954A (zh) | 2011-03-30 |
US8354754B2 (en) | 2013-01-15 |
KR101667427B1 (ko) | 2016-10-18 |
US20110042831A1 (en) | 2011-02-24 |
EP2287899A1 (de) | 2011-02-23 |
EP2287899B1 (de) | 2014-05-07 |
KR20110018838A (ko) | 2011-02-24 |
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