WO2007057982A1 - 大きなボイドを内蔵することのないAu-Sn合金バンプおよびその製造方法 - Google Patents
大きなボイドを内蔵することのないAu-Sn合金バンプおよびその製造方法 Download PDFInfo
- Publication number
- WO2007057982A1 WO2007057982A1 PCT/JP2005/021838 JP2005021838W WO2007057982A1 WO 2007057982 A1 WO2007057982 A1 WO 2007057982A1 JP 2005021838 W JP2005021838 W JP 2005021838W WO 2007057982 A1 WO2007057982 A1 WO 2007057982A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alloy
- bump
- balance
- mass
- bumps
- Prior art date
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 85
- 239000000956 alloy Substances 0.000 title claims abstract description 85
- 229910015363 Au—Sn Inorganic materials 0.000 title claims abstract description 82
- 239000011800 void material Substances 0.000 title abstract description 19
- 238000000034 method Methods 0.000 title abstract description 4
- 239000013078 crystal Substances 0.000 claims abstract description 15
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 28
- 229910000679 solder Inorganic materials 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract 1
- 239000010931 gold Substances 0.000 description 19
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 238000001000 micrograph Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000010907 mechanical stirring Methods 0.000 description 6
- 229910001128 Sn alloy Inorganic materials 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 239000006023 eutectic alloy Substances 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 238000009689 gas atomisation Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3013—Au as the principal constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/11—Manufacturing methods
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L24/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/11—Manufacturing methods
- H01L2224/113—Manufacturing methods by local deposition of the material of the bump connector
- H01L2224/1131—Manufacturing methods by local deposition of the material of the bump connector in liquid form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
- H01L2224/13001—Core members of the bump connector
- H01L2224/13099—Material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
- H01L2224/13001—Core members of the bump connector
- H01L2224/13099—Material
- H01L2224/131—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
- H01L2224/13138—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
- H01L2224/13144—Gold [Au] as principal constituent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00011—Not relevant to the scope of the group, the symbol of which is combined with the symbol of this group
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01004—Beryllium [Be]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01006—Carbon [C]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01013—Aluminum [Al]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01015—Phosphorus [P]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01018—Argon [Ar]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01023—Vanadium [V]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01029—Copper [Cu]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01033—Arsenic [As]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/0132—Binary Alloys
- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/102—Material of the semiconductor or solid state bodies
- H01L2924/1025—Semiconducting materials
- H01L2924/1026—Compound semiconductors
- H01L2924/1032—III-V
- H01L2924/10329—Gallium arsenide [GaAs]
Definitions
- the present invention relates to an Au—Sn alloy bump that does not contain a large void, particularly a large void exceeding 30% of the bump diameter, and a method for manufacturing the same.
- Au-Sn alloy solder paste is used for bonding of semiconductor elements such as GaAs optical elements, GaAs high-frequency elements, and heat transfer elements to substrates, SAW filters that require fine and high airtightness, and package sealing of crystal oscillators, etc.
- the Au—Sn alloy powder contained in this Au—Sn alloy paste is Sn—20 mass%, and the rest is Au—Sn eutectic alloy powder having a composition of Au and inevitable impurities. It is also known that this Au—Sn eutectic alloy powder is usually obtained by gas atomization.
- a dry film layer is formed on the substrate by forming a hole in the Au—Sn alloy solder paste, and the Au—Sn alloy solder paste is buried in the hole of the dry film layer, followed by reflow treatment. It is also known to form Au—Sn alloy bumps on the substrate surface, remove the dry film layer, and use as an electrode (see Non-Patent Document 1).
- Non-Patent Document 1 10th Micro Jointing in Electronics' Symposium on Mounting Technology Vol. 10. 2004 95th: LOO page (Japan Welding Society published on February 5, 2004)
- the Sn 20% by mass described in Non-Patent Document 1, and the Au-Sn produced using a paste containing Au-Sn alloy powder having a composition consisting of Au and inevitable impurities as the rest Large voids are generated and remain inside the alloy bumps, and these large voids remain inside and use the Au-Sn alloy bumps.
- the element and the substrate are joined, large voids remain in the joint, and the large void in the joint becomes a starting point of the crack, and a reliable Au—Sn alloy solder joint cannot be obtained.
- the voids contained in the Au-Sn alloy bumps are small ⁇ voids of 30% or less of the bump diameter, it will not be the starting point of cracks, so reducing the reliability of the joints Absent. Therefore, there has been a demand for Au—Sn alloy bumps that have a large void inside, especially a large void that exceeds 30% of the bump diameter!
- the present inventors have studied to obtain a bump that does not contain a large void inside.
- the result of a study that no longer exists was obtained.
- Sn 20. 5-23. Containing 5% by mass, the balance is Au and inevitable impurity power, and Sn-rich primary phase is crystallized in the substrate at 0.5 to 30 area%.
- the Au-Sn alloy solder paste used in the method for producing an Au-Sn alloy bump without incorporating a large void according to the present invention is manufactured by the following method.
- a molten metal obtained by melting an Au—Sn alloy having a composition containing Sn: 20. 5 to 2 3.5 mass% and the remainder consisting of Au and inevitable impurities is temperature: 600 ° C. to 1000 ° C.
- stirring mechanically or after mechanical stirring pressurize the stirred molten metal at a pressure of 300 to 800 kPa.
- Injection pressure Small gas nozzle with a diameter of 1 to 2 mm at a pressure of 5000 to 8000 kPa and an inert gas is injected at a nozzle gap of 0.3 mm or less to produce a Sn-rich primary crystal phase of 0.5 to 30 area%. ! / Manufacturing Au—Sn alloy powder.
- the stirring is preferably mechanical stirring, and propeller stirring is more preferable among mechanical stirring.
- Electromagnetic stirring can also be used in combination with mechanical stirring, which can be combined with electrical stirring such as electromagnetic stirring.
- the rotational speed of the mechanical stirring is not particularly limited, but it is preferable to perform propeller stirring at 60 to: LOOr. Pm for 3 to L0 minutes.
- Sn 20. 5-23.
- the Au—Sn alloy powder obtained by gas atomizing the Au—Sn alloy melt containing 5% by mass with the balance of Au and inevitable impurities without mechanical stirring. Even if Sn-rich primary crystal phase may crystallize, the amount is very small and the amount does not exceed 0.4%.
- the bump will contain a large void that exceeds 30% of the bump diameter.
- the Au—Sn alloy powder having a structure in which the Sn-rich primary phase is crystallized in an amount of 0.5 to 30% by area and has no Au-rich primary phase is Sn: 20.5 to 23.5% by mass. It can be produced by mechanically stirring the Au—Sn alloy melt containing Au and the balance of unavoidable impurities, and atomizing the Au—Sn alloy melt thus mechanically stirred.
- the bumps obtained by applying the Au-Sn alloy solder paste, which is a mixture of this Au-Sn alloy powder and a commercially available flux, onto the substrate in the form of dots and reflow treatment reduce the number of voids in the bump. Large voids exceeding 30% of the bump diameter will not be seen at all.
- the reason for limiting the content of Sn contained in the Au- Sn alloy bump of the present invention 20 To 5 to 23.5 mass 0/0, the content of Sn contained in the bump 20. 5% If it is less than 1, the Au-rich primary crystal phase is crystallized, the melt viscosity becomes higher as the melting point becomes higher, and the gas generated during paste melting is trapped in the vicinity of the substrate, leaving voids inside the bumps.
- the content of S exceeds 23.5% by mass, a coarse Sn-rich primary phase will crystallize even if the molten metal is mechanically stirred, and the Sn-rich primary phase exceeds 30 area% as a whole. This is because it becomes preferable that the voids remain inside the bump because it becomes difficult to escape the internal force of the bump due to crystallization.
- the Sn-rich primary phase crystallized in the Au-Sn alloy powder contained in the Au-Sn alloy paste used to produce the Au-Sn alloy bump of the present invention is crystallized in an amount of 0.5 to 30 area%. The reason is that if the amount of the Sn-rich primary phase crystallized in the cross section of the Au—Sn alloy powder is less than 0.5% by area, an Au-rich primary phase is formed. On the other hand, the melting point of other eutectic structures is high, so the melt viscosity is high at the same temperature. Gas generated during melting of the paste is trapped and causes voids.
- the melting point of the powder clearly shifts to a high temperature, and the ratio of the Sn-rich primary crystal phase increases and shifts from the eutectic point.
- the melting point becomes higher, the viscosity of the melt becomes higher, the fluidity decreases, and the paste melts. This is because it is preferable because the gas generated at times is trapped to cause the generation of voids.
- the more preferable range of the crystallization amount of the Sn-rich primary crystal phase crystallized in the Au—Sn alloy powder contained in the Au—Sn alloy paste used for producing the Au—Sn alloy bump of the present invention is 10-20. Area%.
- the Au-Sn alloy bump of the present invention does not contain a large void exceeding 30% of the bump diameter, cracks due to the void origin occur compared to the conventional Au-Sn alloy bump. Therefore, the reliability of the joint is excellent, the defective product occurrence rate of the semiconductor device can be reduced, and the cost can be reduced, which brings about an excellent industrial effect.
- FIG. 1 is a metallographic micrograph of a cross section of Au—Sn alloy bump 1.
- FIG. 2 is a metallographic micrograph of a cross section of Au—Sn alloy bump 2.
- FIG. 3 is a metallographic micrograph of the cross section of Au—Sn alloy bump 3.
- FIG. 4 is a metallographic micrograph of the cross section of Au—Sn alloy bump 4.
- FIG. 5 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 5.
- FIG. 6 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 6.
- FIG. 7 is a metallographic micrograph of the cross section of Au—Sn alloy bump 7.
- FIG. 8 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 8.
- FIG. 9 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 9.
- FIG. 10 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 10.
- FIG. 11 is a metallographic micrograph of the cross section of the Au—Sn alloy bump 11.
- Au—Sn alloy solder pastes 1 to 11 were prepared by mixing a commercially available RMA flux with these Au—Sn alloy powders at a flux ratio of 7 mass%.
- a dry film layer having a hole and a thickness of 70 m is formed, and the hole of the dry film layer is filled with the Au—Sn alloy solder base 1 ⁇ : L 1 and reflow treatment (preheat 150 ° CZ60 seconds + main heat 320 ° CZ60 seconds), 1000 Au—Sn alloy bumps 1 to 11 each having a diameter of 80 m and a height of 60 m were produced.
- the cross section of these Au-Sn alloy bumps 1 to: L 1 was observed with a 1000 times magnification metal microscope, and a structural photograph of the cross section was taken. The structural photographs are shown in FIGS.
- Au—Sn alloy bumps 1 to: 240 L 1 were extracted, and these 240 Au—Sn alloy bumps 1 to 11 were built into the bumps using a transmission X-ray device.
- the void diameter is determined as a ratio to the bump diameter, and the void diameter is 10% or less of the bump diameter.
- the void diameter exceeds 10% to 20% of the bump diameter.
- the void diameter is bump. Voids with diameters exceeding 20% to 30% or less and void diameters exceeding 30% of bump diameters were classified. The number of these classified voids was determined, and the results are shown in Table 2.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Wire Bonding (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/094,167 US8721961B2 (en) | 2005-11-21 | 2005-11-29 | Au—Sn alloy bump including no large void and method of producing same |
EP05811709A EP1953811A4 (en) | 2005-11-21 | 2005-11-29 | AU-SN ALLOY BULK WITH NON-INTEGRATED LARGE SPACE AND MANUFACTURING PROCESS THEREFOR |
CN2005800521116A CN101313396B (zh) | 2005-11-21 | 2005-11-29 | 没有内藏大孔隙的Au-Sn合金凸块及其制造方法 |
KR1020087011683A KR101235540B1 (ko) | 2005-11-21 | 2005-11-29 | 큰 보이드를 내포하지 않는 Au―Sn합금 범프 및 그제조 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-336084 | 2005-11-21 | ||
JP2005336084A JP4826735B2 (ja) | 2005-11-21 | 2005-11-21 | 大きなボイドを内蔵することのないAu−Sn合金バンプの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007057982A1 true WO2007057982A1 (ja) | 2007-05-24 |
Family
ID=38048374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021838 WO2007057982A1 (ja) | 2005-11-21 | 2005-11-29 | 大きなボイドを内蔵することのないAu-Sn合金バンプおよびその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8721961B2 (ja) |
EP (1) | EP1953811A4 (ja) |
JP (1) | JP4826735B2 (ja) |
KR (1) | KR101235540B1 (ja) |
CN (1) | CN101313396B (ja) |
TW (1) | TW200720004A (ja) |
WO (1) | WO2007057982A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2290676A4 (en) * | 2008-06-12 | 2012-01-11 | Mitsubishi Materials Corp | METHOD FOR CONNECTING A SUBSTRATE AND MOUNTING OBJECT WITH SOLDERING PASTE |
MY152833A (en) * | 2010-04-28 | 2014-11-28 | Medtronic Inc | Hermetic wafer-to-wafer bonding with electrical interconnection |
US8513120B2 (en) | 2010-04-29 | 2013-08-20 | Medtronic, Inc. | Gold-tin etch using combination of halogen plasma and wet etch |
US10612112B2 (en) | 2015-04-09 | 2020-04-07 | Electronics And Telecommunications Research Institute | Noble metal material for 3-dimensional printing, method for manufacturing the same, and method for 3-dimensional printing using the same |
KR101839876B1 (ko) * | 2015-04-09 | 2018-03-20 | 한국전자통신연구원 | 3d 프린팅용 귀금속 소재, 그 제조 방법, 및 그 소재를 이용한 3d 프린팅 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04262895A (ja) * | 1991-02-15 | 1992-09-18 | Tanaka Kikinzoku Kogyo Kk | 金属極微小球の製造方法 |
JP2003260588A (ja) * | 2002-03-08 | 2003-09-16 | Mitsubishi Materials Corp | 濡れ広がりの少ないはんだペースト用Au−Sn合金粉末 |
JP2006007288A (ja) * | 2004-06-28 | 2006-01-12 | Mitsubishi Materials Corp | はんだペースト用Au−Sn合金粉末 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4758272A (en) * | 1987-05-27 | 1988-07-19 | Corning Glass Works | Porous metal bodies |
JPS6431907A (en) * | 1987-07-27 | 1989-02-02 | Nippon Kokan Kk | Apparatus for producing metal powder |
JPH02115307A (ja) * | 1988-10-25 | 1990-04-27 | Daido Steel Co Ltd | 金属溶湯の噴霧方法及びそのための注湯装置 |
JP3446798B2 (ja) | 1996-11-29 | 2003-09-16 | 日本特殊陶業株式会社 | 接合バンプ付き配線基板 |
CN1157497C (zh) * | 2000-04-12 | 2004-07-14 | 林忠华 | 自催化镍-锡-磷合金镀液及其镀层 |
JP2001176999A (ja) * | 2000-11-27 | 2001-06-29 | Tanaka Kikinzoku Kogyo Kk | 電子部品の気密封止方法 |
JP4051661B2 (ja) * | 2001-09-28 | 2008-02-27 | 三菱マテリアル株式会社 | はんだペースト用Au−Sn合金粉末 |
JP4769469B2 (ja) * | 2004-02-20 | 2011-09-07 | 田中貴金属工業株式会社 | Au−Sn系ろう材による接合方法 |
KR101141089B1 (ko) | 2004-06-28 | 2012-05-03 | 미쓰비시 마테리알 가부시키가이샤 | 땜납 페이스트용 Au-Sn합금분말 |
-
2005
- 2005-11-21 JP JP2005336084A patent/JP4826735B2/ja active Active
- 2005-11-28 TW TW094141743A patent/TW200720004A/zh unknown
- 2005-11-29 KR KR1020087011683A patent/KR101235540B1/ko active IP Right Grant
- 2005-11-29 CN CN2005800521116A patent/CN101313396B/zh active Active
- 2005-11-29 EP EP05811709A patent/EP1953811A4/en not_active Withdrawn
- 2005-11-29 WO PCT/JP2005/021838 patent/WO2007057982A1/ja active Application Filing
- 2005-11-29 US US12/094,167 patent/US8721961B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04262895A (ja) * | 1991-02-15 | 1992-09-18 | Tanaka Kikinzoku Kogyo Kk | 金属極微小球の製造方法 |
JP2003260588A (ja) * | 2002-03-08 | 2003-09-16 | Mitsubishi Materials Corp | 濡れ広がりの少ないはんだペースト用Au−Sn合金粉末 |
JP2006007288A (ja) * | 2004-06-28 | 2006-01-12 | Mitsubishi Materials Corp | はんだペースト用Au−Sn合金粉末 |
Non-Patent Citations (2)
Title |
---|
COLLECTED PAPERS OF 10TH SYMPOSIUM ON MICROJOINING AND ASSEMBLY TECHNOLOGY IN ELECTRONICS, vol. 10, 5 February 2004 (2004-02-05), pages 95 - 100 |
See also references of EP1953811A4 |
Also Published As
Publication number | Publication date |
---|---|
US8721961B2 (en) | 2014-05-13 |
US20080304999A1 (en) | 2008-12-11 |
CN101313396B (zh) | 2010-05-12 |
EP1953811A1 (en) | 2008-08-06 |
TW200720004A (en) | 2007-06-01 |
JP2007136523A (ja) | 2007-06-07 |
KR101235540B1 (ko) | 2013-02-21 |
CN101313396A (zh) | 2008-11-26 |
EP1953811A4 (en) | 2009-04-01 |
JP4826735B2 (ja) | 2011-11-30 |
TWI341225B (ja) | 2011-05-01 |
KR20080069187A (ko) | 2008-07-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7135171B2 (ja) | はんだ組成物 | |
WO2006001422A1 (ja) | はんだペースト用Au-Sn合金粉末 | |
US9095936B2 (en) | Variable melting point solders | |
JP2005319470A (ja) | 鉛フリーはんだ材料、電子回路基板およびそれらの製造方法 | |
JP5584909B2 (ja) | 接続構造体 | |
WO2010098357A1 (ja) | 金属フィラー、低温接続鉛フリーはんだ、及び接続構造体 | |
WO2007057982A1 (ja) | 大きなボイドを内蔵することのないAu-Sn合金バンプおよびその製造方法 | |
JP2011147982A (ja) | はんだ、電子部品、及び電子部品の製造方法 | |
TW202027899A (zh) | 混合合金焊膏、其製造方法以及焊接方法 | |
JP2011062736A (ja) | 鉛フリー高温用接合材料 | |
JP4811663B2 (ja) | ボイド発生の少ないSn−Au合金はんだペースト | |
JP6888900B2 (ja) | Au−Sn合金はんだペースト、Au−Sn合金はんだ層の製造方法、及びAu−Sn合金はんだ層 | |
WO2012120733A1 (ja) | Pbフリーはんだペースト | |
JP4811661B2 (ja) | ボイド発生の少ないAu−Sn合金はんだペースト | |
JP2009226472A (ja) | ピン転写用Au−Sn合金はんだペースト | |
KR20150088811A (ko) | Au-Sn-Bi 합금 분말 페이스트, Au-Sn-Bi 합금 박막 및 그 성막 방법 | |
JP2017177122A (ja) | 高温Pbフリーはんだペースト及びその製造方法 | |
JP2010062256A (ja) | バンプ付き半導体チップの製造方法 | |
JP5003551B2 (ja) | ペースト用Pb−Snはんだ合金粉末およびPb−Snはんだ合金ボール | |
KR101141089B1 (ko) | 땜납 페이스트용 Au-Sn합금분말 | |
JP4872764B2 (ja) | ボイド発生の少ないAu−Sn合金はんだペースト | |
US20040096688A1 (en) | Lead-free joining material and joining method using the same | |
JP4780466B2 (ja) | Auメッキ処理基板用Sn−Au合金はんだペースト | |
JP6511773B2 (ja) | Au−Sn合金はんだペースト、Au−Sn合金はんだペーストの製造方法、Au−Sn合金はんだ層の製造方法 | |
JP2004095907A (ja) | ハンダ接合構造およびハンダペースト |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580052111.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1020087011683 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12094167 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005811709 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005811709 Country of ref document: EP |