JPWO2019039335A1 - 電子部品の製造方法及び電子部品 - Google Patents
電子部品の製造方法及び電子部品 Download PDFInfo
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- JPWO2019039335A1 JPWO2019039335A1 JP2019537564A JP2019537564A JPWO2019039335A1 JP WO2019039335 A1 JPWO2019039335 A1 JP WO2019039335A1 JP 2019537564 A JP2019537564 A JP 2019537564A JP 2019537564 A JP2019537564 A JP 2019537564A JP WO2019039335 A1 JPWO2019039335 A1 JP WO2019039335A1
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- electronic component
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- 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
- H01L2224/16237—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 the bump connector connecting to a bonding area disposed in a recess of the surface of the item
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- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
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- 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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- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/17—Structure, shape, material or disposition of the bump connectors after the connecting process of a plurality of bump connectors
- H01L2224/1751—Function
- H01L2224/17515—Bump connectors having different functions
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- H01L2224/8119—Arrangement of the bump connectors prior to mounting
- H01L2224/81192—Arrangement of the bump connectors prior to mounting wherein the bump connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
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- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
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Abstract
Description
(1)電子部品の全体構成
以下、実施形態1に係る電子部品1について、図面を参照して説明する。
次に、電子部品1の各構成要素について、図面を参照して説明する。
チップ状電子部品2は、図1Aに示すように、電子部品1の第1方向D1において互いに反対側にある表面(第1主面)21及び裏面(第2主面)22を有する。より詳細には、チップ状電子部品2は、板状に形成されており、その厚さ方向において互いに反対側にある表面21及び裏面22を有する。表面21及び裏面22は、互いに背向する。また、チップ状電子部品2は、側面(外周面)23を有する。チップ状電子部品2の平面視形状(チップ状電子部品2をその厚さ方向から見たときの外周形状)は、長方形状であるが、長方形状に限らず、例えば正方形状であってもよい。
樹脂成形体3は、図1Aに示すように、チップ状電子部品2を保持するように構成されている。樹脂成形体3は、電子部品1の第1方向D1において互いに反対側にある第1面31及び第2面32を有する。より詳細には、樹脂成形体3は、板状に形成されており、その厚さ方向において互いに反対側にある第1面31及び第2面32を有する。樹脂成形体3の平面視形状(樹脂成形体3をその厚さ方向すなわち第1方向D1から見たときの外周形状)は、長方形状である。ただし、樹脂成形体3の平面視形状は、長方形状に限らず、例えば正方形状であってもよい。樹脂成形体3の平面サイズは、チップ状電子部品2の平面サイズよりも大きい。
電子部品1では、図1Aに示すように、チップ状電子部品2の側方に、複数(図示例では2つ)の導体ピラー4が配置されている。第1方向D1と直交する第2方向D2において、複数の導体ピラー4は、チップ状電子部品2から離れて位置している。複数の導体ピラー4は、樹脂成形体3に保持されている。
配線層5は、樹脂成形体3の第1面31側及びチップ状電子部品2の表面21側において、チップ状電子部品2と導体ピラー4とを電気的に接続している。配線層5は、チップ状電子部品2の表面21(のうち端子電極の表面)に接続されている第1端51と、導体ピラー4に接続されている第2端52とを有する。配線層5は、チップ状電子部品2の表面21と導体ピラー4の第1端面41と後述の絶縁部7の第2中間層72とに跨って配置されている。
電極8は、樹脂成形体3の第2面32側において、導体ピラー4の第2端面42と第2レジスト層10とに跨って形成されている。
第1レジスト層9は、樹脂成形体3の第1面31側において、配線層5の一部を除いて配線層5を覆うように形成されている。第1レジスト層9には、配線層5の一部を露出させる孔91が形成されている。第1レジスト層9は、樹脂成形体3の第1面31側において、配線層5と絶縁部7とに跨って形成されている。第1レジスト層9は、電気絶縁性を有する。第1レジスト層9は、配線層5よりもはんだ濡れ性が低い材料により形成されている。第1レジスト層9は、例えばポリイミド層である。
絶縁部7は、電気絶縁性を有する。絶縁部7は、複数(図示例では2つ)の第1中間層(第1絶縁部)71と、第2中間層(第2絶縁部)72と、第3中間層(第3絶縁部)73と、を備える。
シールド部6は、電磁シールドのためのシールド層として設けられている。シールド部6は、複数(図示例では2つ)の第1導体層61と、第2導体層62と、第3導体層63と、を備える。
電子部品1は、導体ピラー4の側面を囲むように導体ピラー4と同軸的に配置される導体層60を備える。つまり、電子部品1は、導体ピラー4と、導体ピラー4の側面を囲むように配置され、導体ピラー4の側面から離れている導体層60と、を含む同軸構造14を有する。導体層60は、上述のシールド部6の第1導体層61により構成されている。電子部品1では、同軸構造14が、導体ピラー4と導体層60との間に介在する中間層70を更に備える。中間層70は、上述の絶縁部7の第1中間層71により構成される電気絶縁層である。電子部品1では、樹脂成形体3が、導体層60の側面を覆っている。
第1グラウンド用配線層12は、シールド部6と電気的に接続されている。より詳細には、第1グラウンド用配線層12は、樹脂成形体3の第1面31側において、シールド部6と接しており、導体層60と電気的に接続されている。第1グラウンド用配線層12は、シールド部6のうち第1導体層61から見て第2導体層62とは反対側のあるグラウンド用導体層65と第1レジスト層9とに跨って形成されている。第1グラウンド用配線層12の材料は、例えば、Cuである。
次に、実施形態1に係る電子部品1の製造方法について、図3A〜3F、4A〜4F及び5A〜5Dを参照して説明する。
実施形態1に係る電子部品1の製造方法は、支持体120の表面121上に導体ピラー4を形成するピラー形成工程と、導体ピラー4の側面を覆う中間層70を形成する中間層形成工程と、中間層70の側面を覆う導体層60を形成する導体層形成工程と、導体層60の側面を覆う樹脂構造体30を成形する樹脂成形工程と、を備える。これにより、実施形態1に係る電子部品1の製造方法では、導体ピラー4と導体層60とを含む同軸構造14を有する電子部品1をより容易に製造可能となる。この点について更に説明する。実施形態1に係る電子部品1の製造方法では、導体ピラー4を先に形成してから、導体ピラー4の側面を覆うように中間層70を形成し、その後、中間層70の側面を覆うように導体層60を形成する。これにより、実施形態1に係る電子部品1の製造方法では、従来の電子部品の製造方法のように貫通孔に充填体を充填してから充填体に信号ビア導体(導体ビア)を形成するための貫通孔を形成するような場合と比べて、導体ピラー4のアスペクト比が高くなっても容易に同軸構造14を形成することが可能となる。また、実施形態1に係る電子部品1の製造方法により製造された電子部品1は、例えば、導体ピラー4が外部からの電磁波の影響を受けにくいという利点、導体ピラー4を通る高周波信号の伝搬ロスを少なくできるという利点がある。また、同軸構造を形成するために複数の生シート(グリーンシート)の貫通孔内にメタライズインクを印刷して、複数の生シートを積層・圧着した後、焼成するような製造方法では、同軸構造において信号ビア導体を囲んでいる信号ビア導体に対する接地ビア導体の位置がずれやすく、同軸構造の電磁シールド性能が低下する懸念がある。これに対して、実施形態1に係る電子部品1の製造方法では、導体ピラー4に対して中間層70を積層し、中間層70に導体層60を積層するので、導体ピラー4と導体層60との相対的な位置精度を向上させることが可能となり、導体ピラー4が外部からの電磁波の影響をより受けにくくなる。
(5.1)変形例1
実施形態1の変形例1に係る電子部品1aは、図6に示すように、実施形態1に係る電子部品1(図1A参照)における第1グラウンド用配線層12及び第3レジスト層11を備えていない点で、実施形態1に係る電子部品1と相違する。変形例1に係る電子部品1aに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
実施形態1の変形例2に係る電子部品1bは、図7に示すように、第1レジスト層9が配線層5全体を覆っている点、及び第1グラウンド用配線層12が第1レジスト層9全体を覆っている点で、実施形態1に係る電子部品1と相違する。変形例2に係る電子部品1bに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
実施形態1の変形例3に係る電子部品1cは、図8に示すように、第2方向D2において並ぶ2つの電子部品20cを実装できるように第2方向D2における第2グラウンド用配線層13の全長(配線長)を長くしてある点で、実施形態1に係る電子部品1と相違する。また、変形例3に係る電子部品1cは、第2グラウンド用配線層13において第2レジスト層10により覆われていない領域上に電極16を形成してある点で、実施形態1に係る電子部品1と相違する。変形例3に係る電子部品1cに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
実施形態1に係る電子部品1では、樹脂成形体3の第2面32が平面状であり、樹脂成形体3の第2面32からチップ状電子部品2の表面21までの最短距離が、第2面32から第1面31までの最短距離よりも長い。これにより、実施形態1に係る電子部品1では、低背化を図ることができる。
実施形態2に係る電子部品1dは、図10に示すように、複数(図示例では2つ)のチップ状電子部品2が設けられている点で、実施形態1に係る電子部品1(図1A参照)と相違する。実施形態2に係る電子部品1dに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
実施形態3に係る電子部品1eは、図11に示すように、実施形態1に係る電子部品1(図1A参照)におけるチップ状電子部品2が設けられていない点で、実施形態1に係る電子部品1と相違する。実施形態3に係る電子部品1eに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
実施形態4に係る電子部品1fは、図12に示すように、中間層70(第1中間層71)、第2中間層72及び第3中間層73fの他に、チップ状電子部品2の側面23及び裏面22の両方を覆う絶縁層77を備えている点で、実施形態1に係る電子部品1(図1A参照)と相違する。また、実施形態4に係る電子部品1fは、実施形態1に係る電子部品1の第3中間層73の代わりに、第3中間層73fを備えている点で、実施形態1に係る電子部品1と相違する。実施形態4に係る電子部品1fに関し、実施形態1に係る電子部品1と同様の構成要素については、同一の符号を付して説明を省略する。
以上説明した実施形態等から以下の態様が開示されていることは明らかである。
2 チップ状電子部品
21 表面
22 裏面
23 側面
3 樹脂成形体
30 樹脂構造体
31 第1面
32 第2面
301 第1面
302 第2面
4 ピラー(導体ピラー)
41 第1端面
42 第2端面
43 導電性バンプ
44 導電性バンプ
46 接合部
5 配線層
51 第1端
52 第2端
53 電極
6 シールド部
600 金属層
60 導体層
61 第1導体層
612 端面
62 第2導体層
63 第3導体層
64 第4導体層
65 グラウンド用導体層
7,7f 絶縁部
700 絶縁層
70 中間層
71 第1中間層
72 第2中間層
73,73f 第3中間層
74 第4中間層
77 絶縁層
770 絶縁膜
8 電極
9 第1レジスト層
91 孔
10 第2レジスト層
101 孔
11 第3レジスト層
111 孔
12 第1グラウンド用配線層
13 第2グラウンド用配線層
14 同軸構造
15 回路基板
16 電極
20,20c 電子部品
120 支持体
121 表面
123 ベース
124 接着層
125 導電層
200 電子部品モジュール
201 カバー層
202 間隙
203 間隙
210 電子部品モジュール
D1 第1方向
D2 第2方向
Claims (18)
- 支持体の表面上に導電性を有するピラーを形成するピラー形成工程と、
前記ピラーの側面を覆う中間層を形成する中間層形成工程と、
前記中間層の側面を覆う導体層を形成する導体層形成工程と、
前記導体層の側面を覆う樹脂構造体を成形する樹脂成形工程と、を備える
ことを特徴とする電子部品の製造方法。 - 前記樹脂成形工程よりも後で前記支持体を除去する除去工程を更に備える
ことを特徴とする請求項1に記載の電子部品の製造方法。 - 前記ピラー形成工程と前記中間層形成工程との間の部品配置工程と、
前記除去工程よりも後の配線層形成工程と、を更に備え、
前記部品配置工程では、前記ピラーの前記側面から離れた位置で、チップ状電子部品を前記支持体の前記表面上に配置し、
前記配線層形成工程では、前記チップ状電子部品と前記ピラーとを電気的に接続する配線層を形成する
ことを特徴とする請求項2に記載の電子部品の製造方法。 - チップ状電子部品を前記支持体の前記表面上に配置する部品配置工程と、
前記除去工程よりも後の配線層形成工程と、を更に備え、
前記ピラー形成工程は、前記部品配置工程と前記中間層形成工程との間の工程であり、
前記ピラー形成工程では、前記チップ状電子部品の側面から離れた位置で、前記ピラーを前記支持体の前記表面上に配置し、
前記配線層形成工程では、前記チップ状電子部品と前記ピラーとを電気的に接続する配線層を形成する
ことを特徴とする請求項2に記載の電子部品の製造方法。 - チップ状電子部品の表面を前記支持体の前記表面に対向させて前記チップ状電子部品を前記支持体の前記表面上に配置する部品配置工程と、
前記部品配置工程と前記ピラー形成工程との間で、前記チップ状電子部品の側面及び裏面の両方を覆う絶縁層を形成する絶縁層形成工程と、
前記除去工程よりも後の配線層形成工程と、を更に備え、
前記ピラー形成工程は、前記絶縁層形成工程と前記中間層形成工程との間において前記ピラーを複数形成する工程であり、
前記ピラー形成工程では、前記複数のピラーのうち少なくとも1つのピラーの側面の少なくとも一部が前記絶縁層と隣接するように前記複数のピラーを前記支持体の前記表面上に形成する
ことを特徴とする請求項2に記載の電子部品の製造方法。 - 前記部品配置工程では、前記チップ状電子部品の表面を前記支持体の前記表面に対向させて前記チップ状電子部品を前記支持体の前記表面上に配置し、
前記中間層形成工程では、前記中間層である第1中間層と、前記支持体の前記表面のうち露出している領域を覆う第2中間層と、前記チップ状電子部品の側面のうち露出している領域及び裏面の両方を覆う第3中間層と、を一体形成する
ことを特徴とする請求項3又は4に記載の電子部品の製造方法。 - 前記中間層形成工程では、前記中間層である第1中間層と、前記支持体の前記表面のうち露出している領域を覆う第2中間層と、前記絶縁層のうち露出している領域を覆う第3中間層と、を一体形成する
ことを特徴とする請求項5に記載の電子部品の製造方法。 - 前記導体層形成工程では、前記導体層である第1導体層と、前記第2中間層を覆う第2導体層と、前記第3中間層を覆う第3導体層と、を一体形成する
ことを特徴とする請求項6又は7に記載の電子部品の製造方法。 - 前記樹脂成形工程では、前記支持体の前記表面側において前記第1導体層、前記第2導体層及び前記第3導体層を覆うように前記樹脂構造体を成形し、
前記ピラーの先端面を露出させるように前記樹脂構造体を研磨する研磨工程を更に備える
ことを特徴とする請求項8記載の電子部品の製造方法。 - 前記中間層は、電気絶縁層である
ことを特徴とする請求項1乃至9のいずれか一項に記載の電子部品の製造方法。 - 前記導体層形成工程では、CVD法又はスパッタリング法により前記導体層を形成する
ことを特徴とする請求項1乃至10のいずれか一項に記載の電子部品の製造方法。 - 前記中間層形成工程では、CVD法、スパッタリング法又はスプレーコート法により前記中間層を形成する
ことを特徴とする請求項1乃至11のいずれか一項に記載の電子部品の製造方法。 - 前記支持体は、導電層を含み、
前記ピラー形成工程では、前記導電層上に、めっきにより前記ピラーを形成する
ことを特徴とする請求項1乃至12のいずれか一項に記載の電子部品の製造方法。 - 導電性を有するピラーと、
前記ピラーの側面を囲むように配置され、前記ピラーの前記側面から離れている導体層と、
前記ピラーと前記導体層との間に介在する電気絶縁層からなる中間層と、
前記導体層の側面を覆っている樹脂成形体と、を備える
ことを特徴とする電子部品。 - 前記導体層の前記側面から離れて配置されたチップ状電子部品を更に備え、
前記樹脂成形体は、前記導体層の前記側面と、前記チップ状電子部品の側面の少なくとも一部及び裏面と、を覆っている
ことを特徴とする請求項14に記載の電子部品。 - 前記チップ状電子部品と前記ピラーとを電気的に接続している配線層を更に備える
ことを特徴とする請求項15に記載の電子部品。 - 前記中間層からなる第1中間層と第2中間層と第3中間層とを含み電気絶縁性を有する絶縁部と、
前記導体層からなる第1導体層と第2導体層と第3導体層とを含むシールド部と、を備え、
前記第2中間層は、前記配線層と前記樹脂成形体との間に位置しており、
前記第3中間層は、前記チップ状電子部品の裏面及び前記側面を覆っており、
前記第2導体層は、前記樹脂成形体と前記第2中間層との間に介在しており、
前記第3導体層は、前記樹脂成形体と前記第3中間層との間に介在しており、
前記絶縁部の誘電率及び誘電正接が、それぞれ、前記樹脂成形体の誘電率及び誘電正接よりも小さい
ことを特徴とする請求項16に記載の電子部品。 - 前記絶縁部の誘電率及び誘電正接が、それぞれ、前記チップ状電子部品において機能部を支持している基材の誘電率及び誘電正接よりも小さい
ことを特徴とする請求項17に記載の電子部品。
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