WO2004090970A1 - 配線基板およびその製造方法 - Google Patents
配線基板およびその製造方法 Download PDFInfo
- Publication number
- WO2004090970A1 WO2004090970A1 PCT/JP2004/004908 JP2004004908W WO2004090970A1 WO 2004090970 A1 WO2004090970 A1 WO 2004090970A1 JP 2004004908 W JP2004004908 W JP 2004004908W WO 2004090970 A1 WO2004090970 A1 WO 2004090970A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- plating
- wiring
- resist
- forming
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 73
- 229910000679 solder Inorganic materials 0.000 claims abstract description 83
- 238000009713 electroplating Methods 0.000 claims abstract description 52
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000007747 plating Methods 0.000 claims description 243
- 239000000463 material Substances 0.000 claims description 59
- 239000010931 gold Substances 0.000 claims description 49
- 229920005989 resin Polymers 0.000 claims description 47
- 239000011347 resin Substances 0.000 claims description 47
- 238000004519 manufacturing process Methods 0.000 claims description 41
- 238000005530 etching Methods 0.000 claims description 40
- 229910045601 alloy Inorganic materials 0.000 claims description 22
- 239000000956 alloy Substances 0.000 claims description 22
- 239000000654 additive Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 19
- 238000010030 laminating Methods 0.000 claims description 13
- 238000007772 electroless plating Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 7
- 229910001252 Pd alloy Inorganic materials 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 description 113
- 239000004065 semiconductor Substances 0.000 description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 239000011889 copper foil Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010301 surface-oxidation reaction Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241000531908 Aramides Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L24/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H05K3/46—Manufacturing multilayer circuits
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- H05K3/205—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern using a pattern electroplated or electroformed on a metallic carrier
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- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
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- H05K3/4682—Manufacture of core-less build-up multilayer circuits on a temporary carrier or on a metal foil
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49128—Assembling formed circuit to base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49147—Assembling terminal to base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49147—Assembling terminal to base
- Y10T29/49149—Assembling terminal to base by metal fusion bonding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49165—Manufacturing circuit on or in base by forming conductive walled aperture in base
Definitions
- the present invention relates to a wiring board in which one or more wiring layers are stacked, and a method for manufacturing the same.
- a projecting flip-chip connecting bump for flip-chip connection with a semiconductor element is formed on one side of the wiring layer as a first terminal portion.
- a second terminal portion is formed by plating so as to fill the openings in the solder resist covering the wiring layer.
- solder bumps are also formed on the terminals on the substrate side in order to obtain a stable bonding state with the solder bumps on the semiconductor element side. Need to be kept.
- the solder bumps on the substrate side are usually formed by supplying solder by screen printing using a metal paste with a solder paste, and then performing a reflow process, a flux removal process, and a flattening process.
- bumps are formed on a substrate by a substitution reaction between a metal and a metal salt, and bumps are formed by a chemical reaction corresponding to the finer pitch.
- a method can be mentioned, in this method, the material cost and the manufacturing cost are high, and a problem remains in the variation in the bump height.
- solder bumps are formed on the substrate side by screen printing and joined to the solder bumps on the semiconductor element side, the solder is melted by heating after joining, and then joined. At this time, there is a risk that due to variations in the height of the solder bumps on the substrate side, the bonding with the solder bumps on the semiconductor element side may be insufficient.
- solder resist is placed on the board surface and terminals are provided for bonding to the solder bumps on the semiconductor element side.
- NSMD no nS older mask definition
- failures are likely to occur due to stress, drop, and other impacts caused by heat, and reliability is reduced. As a result, poor connection due to the terminal shape may occur.
- solder resist opening diameter becomes smaller, and when the solder resist opening shape is SMD (SolderMaskdefinded), the bonding becomes incomplete unless solder is supplied.
- the form in which the area of the terminal section 721 is not limited by the solder resist 722 as shown in FIG. 7A is shown by NSMD, and as shown in FIG. 7B and FIG.
- the area defined by the solder resist 722 is referred to as SMD.
- the wall angle of the cross-sectional shape of the solder resist is set to an obtuse angle, the size of the bottom of the opening will vary depending on the thickness of the resist and the resist sensitivity, and the surface size cannot be increased when the pitch is fine. There is.
- JP-A-2001-93929 Publication 1
- Japanese Patent Application 2002-20 See Japanese Patent Publication No. 38686 (publicly known document 2).
- the present invention corresponds to these, and more specifically, a wiring board which can be directly flip-chip connected to a solder bump of a semiconductor element, and which can be reliably flip-chip connected to a solder bump of a semiconductor element, and a method of manufacturing the same
- the purpose is to provide.
- the present invention relates to a wiring portion including one or more wiring layers, a first terminal portion protruding from one side of the wiring portion, and a second terminal portion provided on the other side of the wiring portion.
- a resist forming step of forming a resist having a first terminal portion opening on a surface of a composite material comprising a multi-layered metal layer comprising the steps of: An etching step of forming a hole by etching only the first metal layer of the composite material, and forming a first terminal by electrolytic plating so as to fill the hole from the first terminal opening of the resist.
- a method for manufacturing a wiring board characterized in that: The present invention provides a method for manufacturing a wiring board, wherein the composite material is formed by laminating a first Cu layer, a 1 ⁇ 1 layer or 1: 1 layer, and a second Cu layer. is there.
- the first electrolytic plating step includes, in order, Au plating, Cu plating, or Au plating, Ni plating, or Au plating, Ni plating, Cu plating in sequence.
- Pd plating, Cu plating, or Pd plating, N.i plating, or Pd plating, Ni plating, Cu plating, or Pd alloy plating, C u plating certain platings are in order Pd-based alloy plating, Ni plating, or in order Pd-based alloy plating, Ni plating, Cu plating, or Sn plating, or in order, Sn plating, C
- a method of manufacturing a wiring board comprising u plating, or plating with an Sn-based alloy, or sequentially plating with an Sn-based alloy, followed by Cu plating.
- the present invention relates to a wiring portion including one or more wiring layers, a first terminal portion protruding from one side of the wiring portion, and a second terminal portion provided on the other side of the wiring portion.
- a method of manufacturing a wiring board comprising: forming a resist having a first terminal portion opening on a surface of a composite material comprising a first Cu layer, a Ni layer, and a second Cu layer. Forming step, a first electrolytic plating step of forming an electrolytic plating forming portion for the first terminal portion so as to fill the opening for the first terminal portion of the resist by electrolytic plating, and removing the resist.
- An additional resist is formed, and this additional resist is used as an etching resist to etch and penetrate the Ni layer and the first Cu layer to form an electrolysis-formed portion, the first Cu layer, and the Ni
- the present invention is a method for manufacturing a wiring board, wherein the composite material is made of a clad material.
- the present invention is a method for manufacturing a wiring board, wherein a wiring layer is formed by a semi-additive method in a wiring layer forming step.
- the wiring layer forming step includes: (A) a laminating step of laminating a resin material layer made of an insulating resin; and (B) a resin material layer laminated in the laminating step.
- a method of manufacturing a wiring board comprising: forming a via by etching a Cu layer formed by plating and forming a circuit portion.
- the present invention is a method for manufacturing a wiring board, wherein a wiring layer is formed using a full additive method and a subtractive method, or both a full additive method and a semi-additive method in a wiring layer forming step.
- the subtractive method refers to a method in which a conductive thin plate for forming a wiring layer such as a copper foil is selectively etched to form a wiring portion
- the full additive method is a method in which a wiring portion is selected only.
- the semi-additive method refers to a method of forming a wiring portion by removing a conductive layer formed by etching.
- this is selectively electroplated as an energizing layer to form a thick wiring section, and the thin conductive layer for energization is removed by flash etching. This is also called the semi-additive method.
- the present invention relates to a wiring portion including one or more wiring layers, a plurality of first terminal portions provided on one side of the wiring portion, and a plurality of second terminal portions provided on the other side of the wiring portion.
- the wiring layer has a resin material layer facing the first terminal portion side, and the resin material layer is exposed without providing a solder resist on the first terminal portion side of the wiring portion.
- Each of the first terminal portions has a flat portion at the tip thereof, and the flat portions of each of the first terminal portions are aligned on one plane.
- a wiring board characterized in that a surface plating layer comprising an adhesion layer or an electroless plating layer is formed.
- the electrolytic plating layer of the first terminal portion may be composed of an Au plating layer, a Cu plating layer, or an Au plating layer, a Ni plating layer, or an Au plating layer in order from the front side. , Ni plating layer, Cu plating layer, or in order Pd plating layer, Cu plating Layer, or Pd plating layer, Ni plating layer, or Pd plating layer, Ni plating layer, Cu plating layer, or Pd-based alloy plating layer, Cu plating layer, or Pd-based layer Alloy plating layer, Ni plating layer, or Pd-based alloy plating layer, Ni plating layer, Cu plating layer, or Sn plating layer, or Sn plating layer, Cu plating layer, or A wiring substrate comprising a Sn-based alloy plating layer, or a Sn-based alloy plating layer and a Cu plating layer formed in this order.
- the present invention is characterized in that the electroless plating layer of the first terminal is an electroless Au plating layer, or an electroless Ni plating layer and an electroless Au plating layer in this order from the surface side. It is a substrate.
- the first terminal portion that can be directly flip-chip connected to the solder bump of the semiconductor element is provided. It is possible to provide a wiring board capable of reliably performing connection.
- the first electrolytic plating step includes, in order, Au plating, Cu plating, or Au plating, Ni plating, or Au plating, Ni plating, C u plating, or Pd plating, Cu plating, or Pd plating, Ni plating, or Pd plating, Ni plating, Cu plating, or Pd-based alloy plating, Cu Plating, or Pd-based alloy plating, Ni plating, or Pd-based alloy plating, Ni plating, Cu plating, or Sn plating, or Sn plating, Cu plating, or S plating It consists of plating an n-based alloy, or sequentially plating an Sn-based alloy, followed by Cu plating, and the wiring board produced is directly connected to the solder bumps of the semiconductor element and the flip chip on the surface of the first terminal. Can connect. Therefore, at the time of connection, even if the first terminal portion is oxidized on the surface, no problem occurs on a practical level.
- the problem of surface oxidation of the first terminal portion can be further eliminated.
- all the holes for the bump formation region are formed in conformity with the thickness of the first Cu layer. Further, the surface position of the first terminal portion (bump portion) can be aligned with the surface of the Ni layer or the Ti layer.
- the positions of the protruding surfaces of the first terminal portions can be uniformly arranged without variation.
- the height of the protrusion of the first terminal portion that is, the height of the protrusion from the resin material layer when the wiring board is manufactured can be made equal to the thickness of the first Cu layer. .
- the first terminal portion (bump portion) can be formed by electrolytic plating using the Ni layer or Ti layer and the second Cu layer as current-carrying layers.
- the Ni layer or the Ti layer has a role as an etching stopper layer for etching the first Cu layer, a first base material with electrolytic plating, and a conductive layer.
- the second Cu layer functions as a supporting base material and serves as a current-carrying layer in the first electroplating.
- the workability is improved by using a plating resistant resist as the resist at the time of the first Cu layer etching.
- electroless Au plating, or electroless Ni plating and electroless Au plating are sequentially applied to the surface of the terminal portion of the first terminal portion. For this reason, the wiring board manufactured can be flip-chip connected directly to the solder bumps of the semiconductor element on the surface of the first terminal portion. At the time of connection, surface oxidation of the first terminal portion does not pose a problem.
- the first Cu layer and the Ni layer are etched to make the remaining portion of the etching a portion protruding from the resin material layer, and the surface thereof is electrolessly plated.
- the height protruding from the resin material layer can be adjusted.
- the position of the protruding surface of the first terminal portion is aligned with the surface of the Ni layer, the height of the protrusion of the first terminal portion (bump portion), that is, when the wiring board is manufactured, The height protruding from the material layer can be evenly adjusted.
- the second Cu layer not only functions as a supporting base material, but also has a role as a current-carrying layer when performing electroplating, and is a part of the first terminal portion. thickness Thereby, when the wiring board is manufactured, the height protruding from the resin material layer is controlled.
- the Ni layer has a role as an etching stopper layer when etching the second Cu layer and a current-carrying layer when performing electroplating, and the second Cu layer functions as a support base material. I do.
- a clad material is preferable from the viewpoint of productivity.
- it is not limited.
- a Ni plating layer is formed on one surface of a copper foil serving as a first Cu layer, and the Ni plating layer is formed under pressure by applying heat to the Cu foil serving as a second Cu layer.
- a Ni plating layer is formed on one surface of a Cu foil that is to be the first or second Cu layer, and a Cu plating layer that is to be the second or first Cu layer is further formed. You can do it.
- a method using a semi-additive method, a full-additive method and a subtractive method, or a method using both the full-additive method and the semi-additive method can be mentioned.
- the wiring board having the flip-chip repetition bump of the present invention has the first terminal portion directly connected to the solder bump of the semiconductor element by flip-chip bonding. Direct flip-chip connection can be reliably performed.
- the electrolytic plating layer of the first terminal portion may be an Au plating layer, a Cu plating layer, or an Au plating layer, a Ni plating layer, or an Au plating layer, a Ni plating layer, in that order from the front side.
- An electroless plating layer is formed by forming a Sn plating layer, a Cu plating layer, or an Sn alloy plating layer, or an S11 alloy plating layer and a Cu plating layer in this order. Since the first terminal portion is made of an electroless Au plating layer, or an electroless Ni plating layer and an electroless Au plating layer in this order, there is no practical problem even if the first terminal portion is oxidized.
- 1 (a) to 1 (g) are cross-sectional views showing some steps in the first embodiment of the method for manufacturing a wiring board of the present invention.
- FIGS. 1 (a) to 1 (g) are partial process sectional views following FIGS. 1 (a) to 1 (g).
- 3 (a) to 3 (d) are partial process sectional views following FIGS. 2 (a) to 2 (d).
- 4 (a) to 4 (h) are cross-sectional views showing some steps in the second embodiment of the method of manufacturing a wiring board according to the present invention.
- FIGS. 4 (a) to 4 (d) are partial cross-sectional views following FIGS. 4 (a) to 4 (h).
- FIG. 6 is a cross-sectional view of a package using a wiring board having flip-chip connection bumps of the present invention.
- FIG. 7 is a cross-sectional view for explaining a form in which a flip connection portion is provided on the side of the wiring board on which the solder resist is provided and a bonding state.
- FIGS. 1 (a) to 1 (g) are partial process cross-sectional views of a first embodiment of a method for manufacturing a wiring board of the present invention
- FIGS. 2 (a) to 2 (d) are FIGS. 1 (a) to 1 (d).
- 3 (a) to 3 (d) are partial process sectional views following FIGS. 2 (a) to 2 (d)
- FIGS. 4 (a) to 4 (d) 5H is a partial process cross-sectional view of the second embodiment of the method for manufacturing a wiring board of the present invention
- FIGS. 5A to 5D show a part following FIGS. 4A to 4H.
- FIG. 3D is a cross-sectional view of the first embodiment of the wiring board having flip-chip connection bumps of the present invention
- FIG. 5D is a wiring board having flip-chip connection bumps of the present invention. It is a sectional view of a second embodiment of the substrate, FIG. 6 is a cross-sectional view of a package using a wiring board having flip-chip connection bumps according to the present invention, and FIG. 7 is a diagram showing a bonding in a case where a flip connection portion is provided on the side of the wiring board on which a solder resist is provided. It is sectional drawing for demonstrating a state.
- reference numeral 110 denotes a (plate-like) composite material
- reference numeral 111 denotes a first Cu layer
- reference numeral 111A denotes a hole
- reference numeral 112 denotes a Ni layer
- Reference numeral 113 denotes a second Cu layer
- reference numeral 120 denotes a resist
- reference numeral 121 denotes a resist opening
- reference numeral 131 denotes an Au plating layer
- reference numeral 132 denotes an Ni plating layer.
- Reference numeral 13 3 denotes a Cu plating layer
- reference numeral 140 denotes a resin material layer
- reference numeral 141 denotes a hole (a hole for forming a via)
- reference numeral 144 denotes a resin material layer
- reference numeral 150 1
- Reference numeral 5 5 denotes an electroless Cu plating layer (also simply referred to as a Cu layer)
- reference numeral 16 0 denotes a resist
- reference numeral 170 denotes a Cu layer
- reference numeral 17 1 denotes a via portion
- reference numeral 17 5 denotes Cu.
- reference numeral 176 is a via portion
- reference numeral 180 is a solder resist
- reference numeral 181 is an opening
- reference numeral 191 is a Ni plated layer
- reference numeral 192 is a gold plated layer
- reference numeral 221 0 is a (plate-like) composite material
- 211 is the first Cu layer
- 212 is the Ni layer
- 213 is the 2nd Cu layer
- 2220 is the resistor
- Reference numeral 2221 denotes a resist opening
- reference numeral 230 denotes an electrolytic plating layer (also referred to as an electrolytic plating forming portion)
- reference numeral 240 denotes a resin material layer
- reference numeral 241 denotes a hole portion (for forming a via).
- reference numeral 245 is a resin material layer
- reference numerals 250 and 255 are electroless plating layers
- reference numeral 260 is a resist
- reference numeral 270 is a Cu layer
- reference numeral 271 is a via.
- reference numeral 275 is a Cu layer
- reference numeral 276 is a via part
- reference numeral 280 is a solder resist
- reference numeral 281 is an opening
- reference numeral 291 is an Ni plating layer
- reference numeral 292 is gold.
- Reference numeral 310 denotes a wiring board (having flip-chip connection bumps), reference numeral 310 denotes a wiring layer laminate forming portion (also referred to as a wiring portion), and reference numeral 312 denotes a flip-chip connection terminal.
- reference numeral 312 S is a protruding flat portion
- reference numeral 313 is a terminal for connection to a motherboard (also referred to as a second terminal portion)
- reference numeral 315 is solder.
- Reference numeral 320 denotes a semiconductor element
- reference numeral 325 denotes a solder bump
- reference numeral 330 denotes an underfill
- reference numeral 710 denotes a semiconductor element
- reference numeral 715 denotes a solder bump
- reference numeral 720 denotes a wiring board (also an interposer).
- Reference numeral 721 denotes a terminal portion
- reference numeral 725 denotes a solder bump
- reference numeral 730 denotes a bonding portion.
- the wiring board is composed of two wiring layers 170 and 175, as shown in Fig. 3 (d).
- a wiring portion, first terminal portions 13 1, 13 2, 13 3 protrudingly provided on one side of the wiring layers 170, 175, and the other of the wiring layers 170, 175.
- second terminal portions 191, 192 provided on the side.
- Each wiring layer 170, 175 of the wiring portion has a resin material layer 140, 145 on the first terminal portion 131, 132, 133 side, and the first The terminal sections 1.31,13.2,13.3 constitute projecting flip-chip connection bumps for direct flip-chip connection with the solder bumps of the semiconductor element.
- the second terminal portions 191, 192 are formed so as to fill the openings 181, of the solder resist 180, which cover the wiring portions 170, 175.
- Each of the wiring layers 170, 175 has its resin material layer 140, 145 side facing the first terminal section 131, 132, 133 side.
- No solder resist is provided on the side of the first terminals 13 1, 13 2, 13 3, and the resin material layer 140 is exposed, and the first terminals 1 3 1, 1 3 2, 1 3 3 are provided with a flat portion 13 1 at the protruding tip, and the flat portions 1 3 1 of the terminal portions 13 1, 13 2, 13 3 are aligned on one plane. ing.
- a wiring board having such a configuration is used as an interposer for a package.
- a method for manufacturing a wiring board will be described.
- a plate-like composite material 110 (FIG. 1 (a)) formed by laminating a first Cu layer 111, a Ni layer 112, and a second Cu layer 113 in this order.
- a resist 120 is formed in a predetermined shape on the surface of the first Cu layer 111 (FIG. 1 (b)), and the first Cu layer 111 exposed from the resist opening 122 is formed. Is etched only to penetrate the predetermined region, thereby forming a hole 11A for the first terminal portion forming region. (Fig. 1 (c))
- a clad material is preferable in terms of productivity, but is not limited thereto.
- the thicknesses of the first Cu layer 111, the Ni layer 112, and the second Cu layer 113 are 50 ⁇ m to 125 ⁇ m and 1 ⁇ m, respectively. m, 18 m to 30 jum.
- a Ni plating layer 112 is formed on one surface of the copper foil to be the first Cu layer 111 or the second cu layer 113, and the second C u layer 1 13. Obtained by applying pressure and forming a Cu foil to be the first Cu layer 111.
- an Ni plating layer 112 is formed on one surface of the Cu foil to be the first and second Cu layers 111, 113, and a second to a second Cu layer 111 is formed on the Ni plating layer 112.
- the composite material 110 can also be formed by forming the Cu plating layers 1 1 1 and 1 1 3 serving as the first Cu layer.
- the resist 120 a resist that can withstand the subsequent plating step is used.
- an acrylic material is usually used as the material of the resist 120.
- alkali etching that does not etch the Ni layer is used in order to use the Ni layer 112 as an etching stopper.
- the first terminal portions 131, 1332, 1 serving as bumps for flip-chip connection are filled so as to fill the holes 111A formed in the etching step.
- 33 is formed by electroplating.
- Au plating, Ni plating, and Cu plating are performed in this order, and Au plating layer 131, Ni plating layer 132, and Cu plating layer 133 are formed in this order. And fill the hole 11A. '
- Au plating, Cu plating, or Au plating and Ni plating can be applied in that order.
- a first wiring layer 170 provided with wiring via the resin material layer 140 is formed by a semi-additive method so as to be connected to the first terminal portion.
- a resin material layer 140 made of an insulating resin is laminated on the first terminal portion forming side of the composite material 110 (FIG. 1 (f)), and the laminated resin material layer 140 is Drill holes 1 4 1 with a laser. (Fig. 1 (g))
- the resin material layer 140 for example, a material in which an epoxy resin is impregnated into an aramide fiber or a glass fiber is preferably used, but is not limited thereto.
- a method of laminating the resin material layer 140 for example, a resin material layer 140 is formed on one surface of a copper foil, and after laminating the resin material layer 140 on the composite material 110 via the resin material layer 140, A method of removing the copper foil and laminating is adopted.
- a CO 2 laser or a UV-YAG laser is used as a laser for forming the hole 141.
- electroless Cu plating is applied to the surface of the resin material layer 140 including the surface of the formed hole 141 (FIG. 2 (a)).
- a circuit formation portion was opened to form a resist 160 (FIG. 2 (b)), and then Cu exposed from the opening of the resist 160 was formed.
- Electrolytic Cu plating 170 is performed on the layer 150 using the Cu layer 150 as a conductive layer (FIG. 2 (c)). Further, the resist 160 is peeled off, and the Cu layer 150 formed by the exposed electroless plating is removed by etching to form a circuit portion. (Fig. 2 (d))
- an opening 181 which exposes the formation region of the second terminal portions 191 and 192, is provided, and a solder resist 180 is formed so as to cover the entire wiring layer 175. (Fig. 3 (b)).
- electrolytic Ni plating and electrolytic Au plating are sequentially performed using the Ni layer 111 and the second Cu layer 113 as conductive layers.
- the total thickness of the formed Ni plating layers 19 1 and Cu layers 19 2 corresponds to the thickness of the solder resist 180.
- the etching of the second Cu layer 113, the etching of the Ni layer 112, and the etching of the first Cu layer 111 are performed in this order.
- an alkaline solution is used for etching the second Cu layer 113 and the first Cu layer 111, and an excess solution is used for etching the Ni layer 112.
- a water or sulfuric acid solution is used as an etchant.
- the wiring board includes a wiring portion composed of two wiring layers 270 and 275, and a first terminal portion 230, 2 11 1, 2 1 2, 2 protruding from one side of the wiring layers 270 and 275. 95 and second terminal portions 291, 292 provided on the other side of the wiring layers 270, 275 (FIG. 5 (d)).
- Each wiring layer 270, 275 of the wiring portion has resin material layers 240, 245 on the first terminal portions 230, 211, 212, 295 side, and the first terminal portions 230, 215 1, 2, 12 and 295 constitute projecting flip-chip connecting bumps for directly flip-chip connecting to the solder bumps of the semiconductor element.
- the second terminal portions 291, 292 are formed so as to fill the openings 281 of the solder resist 280 that cover the wiring portions 270, 275.
- Each of the wiring layers 270 and 275 has its resin material layer side 240 and 245 directed to the first terminal section side 211, 221 and 295 side. No solder resist is provided on the first terminal portions 230, 211, 2112, and 295, and the resin material layer 240 is exposed.
- the first terminal portions 2 1 1, 2 1, 2 9 5 are provided with a flat portion 2 9 5 at the protruding tip thereof, and the flat portions 2 1 5 are aligned on one plane.
- a wiring board having such a configuration is used as an interposer for a package.
- a plate-like composite material 210 (FIG. 4 (a)) is prepared by sequentially laminating a first Cu layer 211, a Ni layer 212, and a second Cu layer 212. I do.
- a resist is formed on the surface of the first Cu layer 211 in a predetermined shape.
- Electrolytic plating 230 is typically a Cu plating.
- the resin is placed on the electrolytic plating part 230 side so as to be connected to the electrolytic plating part 230 serving as the-part of the first terminal part.
- a first wiring layer 270 provided via the material layer 240 and a second wiring layer 275 provided via the resin material layer 245 are formed (FIGS. 4 (e) to 5 (a)).
- an opening 281 for exposing a region for forming the second terminal portions 291 and 292 is provided, and a solder resist 280 is formed so as to cover the entire wiring layer 275 (FIG. 5).
- electrolytic plating is applied to the opening 281 of the solder resist 280 to form a second terminal portion composed of the Ni plating layer 291 and the Au plating layer 292.
- the second Cu layer 211 is removed by etching, and further added on the Ni layer 212 so as to cover only the first terminal region.
- a resist 2 12 a is formed.
- the additional resist 212 a as an etching resistant resist, the Ni layer 212 and the first Cu layer 211 are etched and penetrated, and the electrolytic plating formation portion 230, the first Cu layer The remaining portion of 211 and the remaining portion of the Ni layer 212 are formed together as a second terminal portion, and the additional register 211a is removed. (Fig. 5
- electroless Au plating is performed on the exposed surface of the Ni layer 212 to form an electroless Au plating layer 295 (FIG. 5 (d)).
- the intended wiring board is manufactured.
- a plate-like composite material obtained by laminating a u layer, a Ti layer, and a second Cu layer may be used.
- the number of wiring layers may be one, or three or more.
- the method for forming the wiring layer is not limited to the semi-additive method.
- Examples include the method using both the full additive method and the subtractive method, or both the full additive method and the semi-additive method.
- the wiring board having the flip-chip connection bumps of the present invention one manufactured by the first embodiment of the method of manufacturing the wiring board shown in FIG. 3 (d), and FIG. 5 (d) Examples include, but are not limited to, those manufactured according to the second embodiment of the method for manufacturing a wiring board shown.
- Each of the ones shown in Fig. 3 (d) and Fig. 5 (d) has a projecting shape on one side of a wiring board on which two wiring layers are arranged, for direct flip-chip connection with solder bumps of semiconductor elements.
- the flip-chip connection bump is formed as a first terminal portion, and on the other side, a second terminal portion is formed to fill an opening of a solder resist covering the wiring portion.
- the resin material layer side is directed to the first terminal portion side, and the wiring is directed to the second terminal portion side.
- the resin material layer is exposed without providing a solder resist on the first terminal portion side, and the first terminal portion has a flat portion at the tip of the protrusion.
- the flat portion of each terminal portion is aligned on one plane, and a surface plating layer made of an electrolytic plating layer or an electroless plating layer is formed on the entire exposed surface including the side surface portion.
- the part 312 is directly flip-chip connected to the solder bump 3225 of the semiconductor element 310.
- the surface of the first terminal 312 is a gold layer, is chemically stable, does not oxidize, and may not require flux treatment.
- the wiring board according to the present invention is provided with the plated bump or the bump formed on the surface by plating, which can be directly connected to the solder bump of the semiconductor element by the flip chip as described above.
- This wiring substrate can directly flip chip-connect with the solder bumps of the semiconductor element with high reliability.
- bump formation was enabled by electroplating with high bonding reliability instead of electroless Ni plating and electroless Au plating.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Wire Bonding (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/527,169 US7325301B2 (en) | 2003-04-09 | 2004-04-05 | Method of manufacturing a wiring board |
US12/000,173 US7480151B2 (en) | 2003-04-09 | 2007-12-10 | Wiring board and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003105794A JP4268434B2 (ja) | 2003-04-09 | 2003-04-09 | 配線基板の製造方法 |
JP2003-105794 | 2003-04-09 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10527169 A-371-Of-International | 2004-04-05 | ||
US12/000,173 Division US7480151B2 (en) | 2003-04-09 | 2007-12-10 | Wiring board and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004090970A1 true WO2004090970A1 (ja) | 2004-10-21 |
Family
ID=33156892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004908 WO2004090970A1 (ja) | 2003-04-09 | 2004-04-05 | 配線基板およびその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (2) | US7325301B2 (ja) |
JP (1) | JP4268434B2 (ja) |
KR (1) | KR101011339B1 (ja) |
CN (1) | CN1701429A (ja) |
TW (1) | TW200504899A (ja) |
WO (1) | WO2004090970A1 (ja) |
Families Citing this family (17)
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US7911038B2 (en) | 2006-06-30 | 2011-03-22 | Renesas Electronics Corporation | Wiring board, semiconductor device using wiring board and their manufacturing methods |
KR101251659B1 (ko) * | 2006-09-20 | 2013-04-05 | 엘지이노텍 주식회사 | 인쇄회로기판과 인쇄회로기판을 이용한 피씨비 카드,그리고 인쇄회로기판의 제조방법 및 pcb 카드의제조방법 |
KR101251660B1 (ko) * | 2006-09-20 | 2013-04-05 | 엘지이노텍 주식회사 | 인쇄회로기판과 인쇄회로기판을 이용한 피씨비 카드,그리고 인쇄회로기판의 제조방법 및 pcb 카드의제조방법 |
KR101360600B1 (ko) * | 2007-02-05 | 2014-02-10 | 엘지이노텍 주식회사 | 수동소자의 솔더링 실장을 위한 구조를 가지는인쇄회로기판과 인쇄회로기판을 이용한 피씨비 카드 및그의 제조방법 |
KR101542478B1 (ko) * | 2007-08-15 | 2015-08-06 | 테세라, 인코포레이티드 | 도전성 포스트를 갖는 상호접속 소자의 제조 방법 |
KR100979818B1 (ko) * | 2007-12-13 | 2010-09-06 | 삼성전기주식회사 | 인쇄회로기판 제조방법 |
KR101525158B1 (ko) * | 2009-03-12 | 2015-06-03 | 삼성전자 주식회사 | 인쇄회로기판 조립체 및 그 제조방법 |
KR101032704B1 (ko) * | 2009-04-14 | 2011-05-06 | 삼성전기주식회사 | 인쇄회로기판 제조방법 |
JP5147779B2 (ja) * | 2009-04-16 | 2013-02-20 | 新光電気工業株式会社 | 配線基板の製造方法及び半導体パッケージの製造方法 |
US8390083B2 (en) * | 2009-09-04 | 2013-03-05 | Analog Devices, Inc. | System with recessed sensing or processing elements |
KR101089647B1 (ko) * | 2009-10-26 | 2011-12-06 | 삼성전기주식회사 | 단층 패키지 기판 및 그 제조방법 |
JP5433543B2 (ja) * | 2010-09-27 | 2014-03-05 | ローム株式会社 | 半導体装置 |
WO2012051340A1 (en) | 2010-10-12 | 2012-04-19 | Analog Devices, Inc. | Microphone package with embedded asic |
JP5800674B2 (ja) * | 2011-10-25 | 2015-10-28 | 日本特殊陶業株式会社 | 配線基板及びその製造方法 |
US9847462B2 (en) | 2013-10-29 | 2017-12-19 | Point Engineering Co., Ltd. | Array substrate for mounting chip and method for manufacturing the same |
US9666558B2 (en) | 2015-06-29 | 2017-05-30 | Point Engineering Co., Ltd. | Substrate for mounting a chip and chip package using the substrate |
KR102612326B1 (ko) * | 2018-11-15 | 2023-12-12 | 산에이카가쿠 가부시키가이샤 | 비아 배선 형성용 기판, 비아 배선 형성용 기판의 제조 방법 및 반도체 장치 실장 부품 |
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JP2000183223A (ja) * | 1998-12-16 | 2000-06-30 | Dainippon Printing Co Ltd | 配線部材の製造方法と配線部材 |
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JP2001185653A (ja) * | 1999-10-12 | 2001-07-06 | Fujitsu Ltd | 半導体装置及び基板の製造方法 |
JP3629178B2 (ja) * | 2000-02-21 | 2005-03-16 | Necエレクトロニクス株式会社 | フリップチップ型半導体装置及びその製造方法 |
JP3968554B2 (ja) * | 2000-05-01 | 2007-08-29 | セイコーエプソン株式会社 | バンプの形成方法及び半導体装置の製造方法 |
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TWI312166B (en) * | 2001-09-28 | 2009-07-11 | Toppan Printing Co Ltd | Multi-layer circuit board, integrated circuit package, and manufacturing method for multi-layer circuit board |
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TWI250834B (en) * | 2004-11-03 | 2006-03-01 | Phoenix Prec Technology Corp | Method for fabricating electrical connections of circuit board |
-
2003
- 2003-04-09 JP JP2003105794A patent/JP4268434B2/ja not_active Expired - Fee Related
-
2004
- 2004-04-05 CN CNA2004800012094A patent/CN1701429A/zh active Pending
- 2004-04-05 US US10/527,169 patent/US7325301B2/en not_active Expired - Fee Related
- 2004-04-05 WO PCT/JP2004/004908 patent/WO2004090970A1/ja active Application Filing
- 2004-04-05 KR KR1020057004986A patent/KR101011339B1/ko not_active Expired - Fee Related
- 2004-04-08 TW TW093109759A patent/TW200504899A/zh not_active IP Right Cessation
-
2007
- 2007-12-10 US US12/000,173 patent/US7480151B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS59208756A (ja) * | 1983-05-12 | 1984-11-27 | Sony Corp | 半導体装置のパツケ−ジの製造方法 |
JPH0394459A (ja) * | 1989-09-06 | 1991-04-19 | Shinko Electric Ind Co Ltd | 半導体装置およびその製造方法 |
JPH11135551A (ja) * | 1997-10-31 | 1999-05-21 | Sony Corp | 半導体装置及び半導体素子の実装方法 |
JP2000183223A (ja) * | 1998-12-16 | 2000-06-30 | Dainippon Printing Co Ltd | 配線部材の製造方法と配線部材 |
Also Published As
Publication number | Publication date |
---|---|
US20080106880A1 (en) | 2008-05-08 |
KR20050120747A (ko) | 2005-12-23 |
JP4268434B2 (ja) | 2009-05-27 |
US7480151B2 (en) | 2009-01-20 |
CN1701429A (zh) | 2005-11-23 |
TWI333250B (ja) | 2010-11-11 |
US20060011382A1 (en) | 2006-01-19 |
JP2004311847A (ja) | 2004-11-04 |
KR101011339B1 (ko) | 2011-01-28 |
TW200504899A (en) | 2005-02-01 |
US7325301B2 (en) | 2008-02-05 |
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