JP7240008B2 - マイクロ電子デバイスのための保護層を備えたダイ取り付け表面銅層 - Google Patents
マイクロ電子デバイスのための保護層を備えたダイ取り付け表面銅層 Download PDFInfo
- Publication number
- JP7240008B2 JP7240008B2 JP2020519728A JP2020519728A JP7240008B2 JP 7240008 B2 JP7240008 B2 JP 7240008B2 JP 2020519728 A JP2020519728 A JP 2020519728A JP 2020519728 A JP2020519728 A JP 2020519728A JP 7240008 B2 JP7240008 B2 JP 7240008B2
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- Prior art keywords
- copper
- microelectronic device
- die attach
- layer
- containing layer
- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 183
- 229910052802 copper Inorganic materials 0.000 title claims description 183
- 239000010949 copper Substances 0.000 title claims description 183
- 238000004377 microelectronic Methods 0.000 title claims description 167
- 239000010410 layer Substances 0.000 title 1
- 239000011241 protective layer Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims description 147
- 239000000758 substrate Substances 0.000 claims description 143
- 229910052751 metal Inorganic materials 0.000 claims description 75
- 239000002184 metal Substances 0.000 claims description 75
- 230000001681 protective effect Effects 0.000 claims description 64
- 238000007747 plating Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 46
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 38
- 229910000679 solder Inorganic materials 0.000 claims description 36
- 229910052759 nickel Inorganic materials 0.000 claims description 19
- 239000000654 additive Substances 0.000 claims description 17
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 15
- 229910052709 silver Inorganic materials 0.000 claims description 15
- 239000004332 silver Substances 0.000 claims description 15
- 229910052718 tin Inorganic materials 0.000 claims description 15
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- 239000011135 tin Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 32
- 238000010586 diagram Methods 0.000 description 26
- 238000007772 electroless plating Methods 0.000 description 16
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 230000003647 oxidation Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- 238000011109 contamination Methods 0.000 description 11
- 238000009713 electroplating Methods 0.000 description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 9
- 229910052721 tungsten Inorganic materials 0.000 description 9
- 239000010937 tungsten Substances 0.000 description 9
- 229910017052 cobalt Inorganic materials 0.000 description 8
- 239000010941 cobalt Substances 0.000 description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002105 nanoparticle Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910052684 Cerium Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical group [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000004924 electrostatic deposition Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- OTNVGWMVOULBFZ-UHFFFAOYSA-N sodium;hydrochloride Chemical compound [Na].Cl OTNVGWMVOULBFZ-UHFFFAOYSA-N 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
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- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
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- H01L23/49—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions wire-like arrangements or pins or rods
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- H01L23/492—Bases or plates or solder therefor
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- H01L23/495—Lead-frames or other flat leads
- H01L23/49503—Lead-frames or other flat leads characterised by the die pad
- H01L23/49513—Lead-frames or other flat leads characterised by the die pad having bonding material between chip and die pad
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- H01L23/495—Lead-frames or other flat leads
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Die Bonding (AREA)
Description
Claims (20)
- マイクロ電子デバイスであって、
構成要素表面と、前記構成要素表面の反対側に位置するダイ取り付け表面とを有する基板と、
前記構成要素表面に近接して位置する構成要素と、
前記ダイ取り付け表面上の銅含有層であって、銅含有層の占有領域が前記ダイ取り付け表面の横方向外周から窪んでいる、前記銅含有層と、
前記銅含有層上のダイ取り付け材料と、
を含み、
前記銅含有層が前記ダイ取り付け材料によってパッケージ部材に取り付けられる、マイクロ電子デバイス。 - 請求項1に記載のマイクロ電子デバイスであって、
前記銅含有層が5ミクロン~10ミクロンの厚みである、マイクロ電子デバイス。 - 請求項1に記載のマイクロ電子デバイスであって、
前記銅含有層と前記ダイ取り付け表面との間に中間層を更に含む、マイクロ電子デバイス。 - 請求項3に記載のマイクロ電子デバイスであって、
前記中間層がチタンを含む、マイクロ電子デバイス。 - 請求項1に記載のマイクロ電子デバイスであって、
前記銅含有層と前記ダイ取り付け材料との間の保護金属層を更に含み、
前記保護金属層が、錫と銀とニッケルとからなる群から選択される少なくとも1つの金属を含む、マイクロ電子デバイス。 - 請求項1に記載のマイクロ電子デバイスであって、
前記ダイ取り付け材料がはんだを含む、マイクロ電子デバイス。 - 請求項1に記載のマイクロ電子デバイスであって、
前記基板が15ミクロン~300ミクロンの厚みである、マイクロ電子デバイス。 - マイクロ電子デバイスを形成する方法であって、
構成要素面と、前記構成要素面の反対側に位置するダイ取り付け面とを有する基板ウェハであって、前記基板が、前記構成要素面に近接する前記マイクロ電子デバイスの構成要素を含む、前記基板ウェハを提供することと、
前記ダイ取り付け面において前記基板ウェハから材料を除去することと、
前記ダイ取り付け面上に銅含有層を形成することであって、前記銅含有層の占有領域が前記マイクロ電子デバイスのためのエリアの横方向外周から窪まされている、前記銅含有層を形成することと、
めっきプロセスによって前記銅含有層上に保護金属層を形成することと、
を含む、方法。 - 請求項8に記載の方法であって、
前記保護金属層が、錫と銀とニッケルとからなる群から選択される少なくとも1つの金属を含む、方法。 - 請求項8に記載の方法であって、
前記基板ウェハから材料を除去することの前の前記基板ウェハの厚みが300ミクロンより大きく、前記基板ウェハから材料を除去することの後の前記基板ウェハの厚みが300ミクロン未満である、方法。 - 請求項8に記載の方法であって、
前記銅含有層を形成することが、
前記ダイ取り付け面にシード層を形成することと、
前記シード層上にめっきマスクを形成することであって、前記シード層が前記銅含有層のためのエリアを露出させる、前記めっきマスクを形成することと、
めっきプロセスによって前記めっきマスクにより露出された箇所の前記シード層上の銅をめっきすることと、
前記めっきマスクを除去することと、
を含む、方法。 - 請求項11に記載の方法であって、
前記銅含有層が5ミクロン~10ミクロンの厚みである、方法。 - 請求項11に記載の方法であって、
前記銅含有層を形成することと同時に、前記構成要素面上に銅含有ピラーの少なくとも一部を形成することを更に含む、方法。 - 請求項8に記載の方法であって、
前記銅含有層を形成することが、前記ダイ取り付け面上に銅含有材料を堆積させるアディティブ法を含む、方法。 - 請求項8に記載の方法であって、
前記基板ウェハから材料を除去することの後であり前記銅含有層を形成することの前に、前記ダイ取り付け面上に中間層を形成することを更に含み、
前記銅含有層が前記中間層上に形成される、方法。 - マイクロ電子デバイスを形成する方法であって、
構成要素表面と、前記構成要素表面と反対側に位置するダイ取り付け表面とを有する、300ミクロン未満の厚みの基板を提供することであって、前記基板が、前記構成要素表面に近接する構成要素を含み、前記基板が、前記ダイ取り付け表面上に銅含有層を有し、前記銅含有層の占有領域が、前記ダイ取り付け表面の横方向外周から窪んでおり、前記基板が、前記銅含有層上に保護金属層を有し、前記銅含有層が、前記ダイ取り付け表面と前記保護金属層との間にある、前記基板を提供することと、
ダイ取り付け材料でパッケージ部材に前記基板を取り付けることと、
を含み、
前記銅含有層が前記ダイ取り付け材料によって前記パッケージ部材に取り付けられる、方法。 - 請求項16に記載の方法であって、
前記基板をパッケージ部材に取り付けることの前に、前記保護金属層を取り除くことを更に含む、方法。 - 請求項16に記載の方法であって、
前記銅含有層が5ミクロン~10ミクロンの厚みである、方法。 - 請求項16に記載の方法であって、
前記ダイ取り付け材料がはんだを含む、方法。 - 請求項19に記載の方法であって、
前記基板をパッケージ部材に取り付けることが、はんだリフロープロセスを含む、方法。
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US15/984,343 | 2018-05-19 | ||
PCT/US2018/054415 WO2019071006A1 (en) | 2017-10-05 | 2018-10-04 | COPPER LAYER WITH CHIP FASTENING SURFACE WITH PROTECTIVE LAYER FOR MICROELECTRONIC DEVICES |
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