JP6247032B2 - 配線基板、半導体装置及び配線基板の製造方法 - Google Patents
配線基板、半導体装置及び配線基板の製造方法 Download PDFInfo
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- JP6247032B2 JP6247032B2 JP2013138202A JP2013138202A JP6247032B2 JP 6247032 B2 JP6247032 B2 JP 6247032B2 JP 2013138202 A JP2013138202 A JP 2013138202A JP 2013138202 A JP2013138202 A JP 2013138202A JP 6247032 B2 JP6247032 B2 JP 6247032B2
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- 229910000679 solder Inorganic materials 0.000 description 16
- 239000010936 titanium Substances 0.000 description 13
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/4857—Multilayer substrates
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
- H01L21/486—Via connections through the substrate with or without pins
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- 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
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
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- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- 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
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49827—Via connections through the substrates, e.g. pins going through the substrate, coaxial cables
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- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4688—Composite multilayer circuits, i.e. comprising insulating layers having different properties
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- 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
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32225—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73201—Location after the connecting process on the same surface
- H01L2224/73203—Bump and layer connectors
- H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- 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
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49866—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials
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- 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
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0183—Dielectric layers
- H05K2201/0191—Dielectric layers wherein the thickness of the dielectric plays an important role
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0352—Differences between the conductors of different layers of a multilayer
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09563—Metal filled via
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/096—Vertically aligned vias, holes or stacked vias
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3436—Leadless components having an array of bottom contacts, e.g. pad grid array or ball grid array components
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- 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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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4661—Adding a circuit layer by direct wet plating, e.g. electroless plating; insulating materials adapted therefor
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4673—Application methods or materials of intermediate insulating layers not specially adapted to any one of the previous methods of adding a circuit layer
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Description
なお、添付図面は、特徴を分かりやすくするために便宜上特徴となる部分を拡大して示している場合があり、各構成要素の寸法比率などが実際と同じであるとは限らない。また、断面図では、各部材の断面構造を分かりやすくするために、一部の部材のハッチングを梨地模様に代えて示し、一部の部材のハッチングを省略している。
図3に示すように、半導体装置90は、上記配線基板10と、半導体チップ91と、アンダーフィル樹脂95と、外部接続端子96とを有している。
絶縁層53の上面53Aを、その絶縁層53の貫通孔VH6の内面よりも平滑な面とした。このため、例えばスパッタ法により、絶縁層53の上面53Aに金属膜(例えば、シード層)を均一に形成することができる。さらに、絶縁層53の上面53Aは凹凸の少ない平滑面であるため、絶縁層53の上面53Aが凹凸の大きい粗化面である場合に比べて、シード層をエッチング除去する際の残渣の発生を抑制することができる。
まず、図4(a)に示す工程では、例えばコア基板20となる銅張積層板(Copper Clad Laminate:CCL)に貫通孔20Xを形成し、電解めっきやペースト充填等の方法により貫通孔20X内に貫通電極21を形成する。その後、サブトラクティブ法により、コア基板20の上面20Aに配線層22を形成するとともに、コア基板20の下面20Bに配線層23を形成する。
次に、上記半導体装置90の製造方法について説明する。
図14に示す工程では、外部接続用パッドP1上に外部接続端子96を形成する。例えば外部接続用パッドP1上に、適宜フラックスを塗布した後、外部接続端子96(ここでは、はんだボール)を搭載し、240〜260℃程度の温度でリフローして固定する。その後、表面を洗浄してフラックスを除去する。
(1)絶縁層53の上面53Aを、その絶縁層53の貫通孔VH6の内面よりも平滑な面とした。このため、例えばスパッタ法により、絶縁層53の上面53Aに金属膜(例えば、シード層100)を均一に形成することができる。したがって、粗化面にシード層100を形成する場合に比べて、シード層100を薄く形成することができる。さらに、絶縁層53の上面53Aは凹凸の少ない平滑面であるため、絶縁層53の上面53Aが凹凸の大きい粗化面である場合に比べて、シード層をエッチング除去する際の残渣の発生を抑制することができる。これらにより、絶縁層53の上面53Aに積層される配線層の微細化が進んだ場合であっても、その配線層の微細化に容易に対応することができる。
なお、上記実施形態は、これを適宜変更した以下の態様にて実施することもできる。
・上記実施形態における貫通孔VH1〜VH9及びビアV1〜V5,64,75〜77の断面形状は特に限定されない。例えば、貫通孔VH1〜VH9及びビアV1〜V5,64,75〜77を断面視略矩形状(ストレート形状)に形成するようにしてもよい。
・上記実施形態における配線基板10における配線層41,42,43,61,62及び絶縁層31,32,33,51,52,53の層数や配線の取り回しなどは様々に変形・変更することが可能である。
53 絶縁層(第1絶縁層)
53A 上面(表面)
62 配線層(第1配線層)
63 導電層
64 ビア(第1ビア)
64A 端面
64X 凹部
70 微細配線構造
71 配線層(第2配線層)
71A 上面(表面)
72,73 配線層
74 配線層(最外層の配線層)
75 ビア(第2ビア)
81 絶縁層(第2絶縁層)
82,83 絶縁層
90 半導体装置
91 半導体チップ
VH6 貫通孔(第1貫通孔)
VH7 貫通孔(第2貫通孔)
Claims (9)
- 第1配線層と、
前記第1配線層を被覆する第1絶縁層と、
前記第1絶縁層の表面に開口し、前記第1配線層の表面を露出する第1貫通孔と、
前記第1貫通孔を充填するとともに、前記第1絶縁層の表面に露出する端面を有し、前記端面に前記第1絶縁層の表面よりも前記第1配線層側に凹む凹部を有する第1ビアと、
前記第1絶縁層の表面と前記第1ビアの端面上に積層され、前記凹部を充填するとともに、前記第1ビアの端面よりも平坦な表面を有する第2配線層と、
前記第2配線層を被覆する第2絶縁層と、
前記第2絶縁層の表面に開口し、前記第2配線層の表面を露出する第2貫通孔と、
前記第2貫通孔を充填するとともに、前記第1ビアよりも小径であり、前記第2配線層を介して前記第1ビア上に積み重ねられた第2ビアと、を有し、
前記第1絶縁層の表面は、前記第1貫通孔の内面よりも表面粗度が低いことを特徴とする配線基板。 - 前記第2絶縁層の厚さが前記第1絶縁層の厚さよりも薄く、前記第2配線層の厚さが前記第1配線層の厚さよりも薄いことを特徴とする請求項1に記載の配線基板。
- 前記第2ビアは、該第2ビアの平面視中心が前記第1ビアの平面視中心と一致するように設けられていることを特徴とする請求項1又は2に記載の配線基板。
- 前記第2ビアの径は、前記第1ビアの径の1/2以下であることを特徴とする請求項1〜3のいずれか1つに記載の配線基板。
- 前記第2配線層は、前記第1配線層よりも微細な配線層であり、ライン/スペース=5μm/5μmよりも小さい配線層であることを特徴とする請求項1〜4のいずれか1つに記載の配線基板。
- 前記第2絶縁層と前記第1絶縁層とは異なる材料からなり、前記第2絶縁層は感光性を有する樹脂材からなることを特徴とする請求項1〜5のいずれか1つに記載の配線基板。
- 前記第2配線層の厚さは、前記第2絶縁層と同じ厚さ、又は前記第2絶縁層よりも薄いことを特徴とする請求項1〜6のいずれか1つに記載の配線基板。
- 前記第2配線層と前記第2絶縁層とを含む微細配線構造を有する請求項1〜7のいずれか1つに記載の配線基板と、
前記微細配線構造の最外層の配線層にフリップチップ実装された半導体チップと、
を有することを特徴とする半導体装置。 - 第1配線層を被覆するように第1絶縁層を形成する工程と、
前記第1絶縁層の表面に、前記第1配線層の表面を露出する第1貫通孔を形成する工程と、
前記第1貫通孔を充填するとともに、前記第1絶縁層の表面を被覆する導電層を形成する工程と、
前記第1絶縁層の表面から突出した前記導電層と前記第1絶縁層の表面とを研磨し、前記第1絶縁層の表面を平滑化するとともに、前記第1絶縁層の表面に露出する端面を有し、前記端面に前記第1絶縁層の表面よりも前記第1配線層側に凹む凹部を有する第1ビアを形成する工程と、
前記第1絶縁層の表面と前記第1ビアの端面上に、前記凹部を充填するとともに、前記第1ビアの端面よりも平坦な表面を有する第2配線層を形成する工程と、
前記第1絶縁層の表面上に、前記第2配線層を被覆する第2絶縁層を形成する工程と、
前記第1貫通孔の真上に位置する前記第2絶縁層の表面に、前記第2配線層の表面を露出するとともに、前記第1貫通孔よりも小径の第2貫通孔を形成する工程と、
前記第2貫通孔を充填して前記第2配線層と接続される第2ビアを形成する工程と、
を有する配線基板の製造方法。
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