JP4979213B2 - 回路基板、回路基板の製造方法および回路装置 - Google Patents
回路基板、回路基板の製造方法および回路装置 Download PDFInfo
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- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 2
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- H01L2224/48225—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
- H01L2224/48227—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 connecting the wire to a bond pad of the item
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—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
- H01L2224/48221—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
- H01L2224/48225—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
- H01L2224/48227—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 connecting the wire to a bond pad of the item
- H01L2224/48228—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 connecting the wire to a bond pad of the item the bond pad being disposed in a recess of the surface of the item
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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
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- H01L2224/732—Location after the connecting process
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- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/1515—Shape
- H01L2924/15158—Shape the die mounting substrate being other than a cuboid
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- 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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- H01L2924/191—Disposition
- H01L2924/19101—Disposition of discrete passive components
- H01L2924/19106—Disposition of discrete passive components in a mirrored arrangement on two different side of a common die mounting substrate
Description
本形態では、図1および図2を参照して、回路基板の構造を説明する。図1(A)は回路基板10Aの断面図であり、図1(B)は回路基板10Aの凹部27の部分を拡大した断面図である。また、図1(C)は他の形態の凹部27を示す断面図である。
図3から図5を参照して、他の形態の回路基板10Bの構成を説明する。図3(A)は回路基板10Bの断面図であり、図3(B)および図3(C)は回路基板10Bの凹部27の部分を拡大した断面図である。
、接合材26を介して接続電極16B、16Cの先端部と接続されている。
本形態では、図6および図7を参照して、図1(A)に示した構成の回路基板10Aの製造方法を説明する。
開口部41B、41Cからは後の工程にて凹部27まで延在する接続孔17B、17Cが形成される。接続孔17B、17Cは半導体基板11を貫通しても良いし、貫通しなくても良い。従って、開口部41B、41Cの幅W3、W2は、例えば10μm〜40μmの範囲でよい。
本実施の形態では、図8および図9を参照して、図3に構造を示した回路基板10Bの製造方法を説明する。本形態の製造方法は、基本的には上述した第3の実施の形態と同様であり、相違点は半導体基板が積層された積層基板32を用いる点にある。この相違点を中心に、本形態の回路基板の製造方法を以下に説明する。
11 半導体基板
12 絶縁膜
13 貫通電極
14 第1導電パターン
15 第2導電パターン
16A〜16D 接続電極
17A〜17D 接続孔
18 回路素子
19 バンプ電極
20A、20B、20C 回路装置
21 外部電極
22 被覆層
23 貫通孔
25 金属細線
26 接合材
27 凹部
28 回路素子
29 金属膜
30 実装基板
31 導電路
32 積層基板
32A 第1半導体基板
32B 第2半導体基板
32C 絶縁層
36 アンダーフィル
37 封止樹脂
40A、40B エッチングマスク
41A〜41D 開口部
42 開口部
43 接着剤
44 支持基板
45 開口部
Claims (17)
- 実装基板と半導体素子との間に配置される回路基板であり、
半導体から成る半導体基板と、
前記半導体基板の一主面を部分的に窪ませた凹部と、
前記凹部が配置された領域で、前記半導体基板の他主面から前記凹部まで貫通すると共に絶縁膜により前記半導体基板と絶縁された第1接続電極と、
前記半導体基板の一主面または他主面を被覆する絶縁膜の表面に形成された導電パターンと、
前記導電パターンと前記半導体基板とを接続する第2接続電極と、
前記凹部に収納されると共に、前記第1接続電極を介して前記導電パターンと接続された回路素子と、
前記凹部以外の領域で前記半導体基板を貫通すると共に絶縁膜により前記半導体基板と絶縁され、前記半導体素子の電極と前記実装基板の導電路とを接続する貫通電極と、
を具備することを特徴とする回路基板。 - 前記第2接続電極を介して、前記半導体基板を接地電位または電源電位に接続することを特徴とする請求項1に記載の回路基板。
- 前記半導体基板の一主面および他主面には、前記絶縁膜で絶縁された第1導電パターンおよび第2導電パターンが形成され、
前記貫通電極により前記第1導電パターンと前記第2導電パターンが接続されることを特徴とする請求項1または請求項2に記載の回路基板。 - 前記凹部には、チップ型の前記回路素子が収納されることを特徴とする請求項1から請求項3の何れかに記載の回路基板。
- 実装基板と半導体素子との間に配置される回路基板であり、
絶縁層を介して積層された第1半導体基板および第2半導体基板から成る積層基板と、
前記積層基板の一主面を部分的に窪ませた凹部と、
前記凹部が配置された領域で、前記積層基板の他主面から前記凹部まで貫通すると共に絶縁膜により前記積層基板と絶縁された第1接続電極と、
前記積層基板の一主面または他主面を被覆する絶縁膜の表面に形成された導電パターンと、
前記導電パターンと前記第1半導体基板または前記第2半導体基板とを接続する第2接続電極と、
前記凹部に収納されると共に、前記第1接続電極を介して前記導電パターンと接続された回路素子と、
前記凹部以外の領域で前記積層基板を貫通すると共に絶縁膜により前記積層基板と絶縁され、前記半導体素子の電極と前記実装基板の導電路とを接続する貫通電極と、
を具備することを特徴とする回路基板。 - 前記凹部は、前記第1半導体基板または前記第2半導体基板を部分的に除去して設けられ、前記凹部の下面には、前記絶縁層が露出することを特徴とする請求項5に記載の回路基板。
- 前記積層基板の一主面および他主面には、前記絶縁膜で絶縁された第1導電パターンおよび第2導電パターンが形成され、
前記貫通電極により前記第1導電パターンと前記第2導電パターンが接続されることを特徴とする請求項5または請求項6に記載の回路基板。 - 前記凹部には、チップ型の前記回路素子が収納されることを特徴とする請求項5から請求項7の何れかに記載の回路基板。
- 実装基板と半導体素子との間に配置される回路基板の製造方法であり、
半導体から成る半導体基板を一主面からエッチングして、前記半導体基板を厚み方向に延在する第1接続孔を形成する工程と、
前記第1接続孔が形成された領域の前記半導体基板を、他主面からエッチングすることにより、底部に前記第1接続孔が露出して且つ回路素子が収納可能な凹部を形成する工程と、
前記半導体基板を厚み方向に途中まで延在する第2接続孔と、前記凹部以外の領域で前記半導体基板を厚み方向に貫通する貫通孔を、エッチングにより形成する工程と、
前記半導体基板の両主面、前記第1接続孔および前記貫通孔の側壁を絶縁膜で被覆する工程と、
前記絶縁膜で被覆される前記第1接続孔の内部に導電材料を形成して第1接続電極を設け、前記絶縁膜で被覆される前記半導体基板の一主面または他主面に導電パターンを設け、前記第2接続孔の内部に導電材料を形成して第2接続電極を設けることで前記導電パターンと前記半導体基板とを接続し、前記絶縁膜で被覆される前記貫通孔の内部に導電材料を形成することにより前記半導体素子の電極と前記実装基板の導電路とを接続する貫通電極を形成する工程と、
前記凹部に前記回路素子を収納すると共に、前記回路素子と前記第1接続電極とを接続する工程と、
を具備することを特徴とする回路基板の製造方法。 - 前記貫通孔は、前記凹部または前記第1接続孔を形成する工程にて同時に形成されることを特徴とする請求項9に記載の回路基板の製造方法。
- 前記第2接続孔は、前記凹部を形成する工程または前記第1接続孔を形成する工程にて同時に形成されることを特徴とする請求項9または請求項10に記載の回路基板の製造方法。
- 実装基板と半導体素子との間に配置される回路基板の製造方法であり、
第1半導体基板および第2半導体基板が絶縁層を介して積層された積層基板を用意する工程と、
前記積層基板の一主面からエッチングを行い、前記積層基板を厚み方向に延在する第1接続孔を形成する工程と、
前記第1接続孔が形成された領域の前記積層基板を、他主面からエッチングすることにより、底部に前記第1接続孔が露出して且つ回路素子が収納可能な凹部を形成する工程と、
前記積層基板を厚み方向に途中まで延在する第2接続孔と、前記凹部以外の領域で前記積層基板を厚み方向に貫通する貫通孔を、エッチングにより形成する工程と、
前記積層基板の両主面、前記第1接続孔および前記貫通孔の側壁を絶縁膜で被覆する工程と、
前記絶縁膜で被覆される前記第1接続孔の内部に導電材料を形成して第1接続電極を設け、前記絶縁膜で被覆される前記積層基板の一主面または他主面に導電パターンを設け、前記第2接続孔の内部に導電材料を形成して第2接続電極を設けることで、前記導電パターンと前記第1半導体基板または前記第2半導体基板とを接続し、前記絶縁膜で被覆される前記貫通孔の内部に導電材料を形成することにより前記半導体素子の電極と前記実装基板の導電路とを接続する貫通電極を形成する工程と、
前記凹部に前記回路素子を収納すると共に、前記回路素子と前記第1接続電極とを接続する工程と、
を具備することを特徴とする回路基板の製造方法。 - 前記凹部を形成する工程では、
前記絶縁層が露出されるまでエッチングを行うことを特徴とする請求項12に記載の回路基板の製造方法。 - 前記貫通孔は、前記凹部または前記第1接続孔を形成する工程にて同時に形成されることを特徴とする請求項12または請求項13に記載の回路基板の製造方法。
- 前記第2接続孔は、前記凹部を形成する工程または前記第1接続孔を形成する工程にて同時に形成されることを特徴とする請求項12から請求項14の何れかに記載の回路基板の製造方法。
- 請求項1から請求項4の何れかに記載された回路基板と、
前記回路基板に実装された半導体素子と、
を具備することを特徴とする回路装置。 - 請求項5から請求項8の何れかに記載された回路基板と、
前記回路基板に実装された半導体素子と、
を具備することを特徴とする回路装置。
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