JP6998826B2 - 電子装置 - Google Patents
電子装置 Download PDFInfo
- Publication number
- JP6998826B2 JP6998826B2 JP2018086050A JP2018086050A JP6998826B2 JP 6998826 B2 JP6998826 B2 JP 6998826B2 JP 2018086050 A JP2018086050 A JP 2018086050A JP 2018086050 A JP2018086050 A JP 2018086050A JP 6998826 B2 JP6998826 B2 JP 6998826B2
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- semiconductor chip
- conductor member
- electronic device
- electrode
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Description
<電子装置の概要について>
図1は、実施の形態1の半導体装置PKGを配線基板PB1に実装した電子装置EDの一例を示す平面図である。図2は、図1に示す電子装置EDにおいて、図1のA1-A1線に相当する位置で切断した断面図である。図3は、図1に示す電子装置EDにおいて、図1のA2-A2線に相当する位置で切断した断面図である。図4は、図1に示す電子装置EDにおいて、図1のA3-A3線に相当する位置で切断した断面図である。図5は、図2~図4に示すキャパシタDC1の要部拡大断面図である。図6は、半導体装置PKGを下面側から見たときの、封止体MRを透視した平面透視図である。なお、図1に示した符号Xは第1方向、符号Yは第1方向X(以下、X方向と称する)に直交する第2方向(以下、Y方向と称する)を示している。すなわち、X方向とY方向とは、互いに直交する方向である。
図1に示す実施の形態1の電子装置EDに含まれる半導体装置PKGについて図1~図4を参照しながら説明する。半導体装置PKGは、樹脂封止型の半導体パッケージ形態の半導体装置であり、平面形状が略長方形のSOP(Small Outline Package)形態の半導体装置である。なお、半導体装置PKGとして、平面形状が略正方形のQFP(Quad Flat Package)を採用してもよい。
図1に示す実施の形態1の電子装置EDに含まれる配線基板PB1について図2~図4を参照しながら説明する。図2~図4に示すように、実施の形態1の配線基板PB1は、主面(上面)PB1aと、主面PB1aとは反対側の裏面PB1bと、主面PB1aと裏面PB1bとの間に配置された配線層WL1とを有している。なお、図2~図4に示すように、配線基板PB1の主面PB1aには、半導体装置PKGおよびその他の素子(図示せず)が搭載されている。
図1に示す実施の形態1の電子装置EDについて図1~図4を参照しながら説明する。図1~図4に示すように、半導体装置PKGは、封止体MRの裏面MRbが配線基板PB1の主面(上面)PB1aに対向する向きで、配線基板PB1の主面PB1a上に搭載されている。
図7は、実施の形態1の電子装置に含まれるインバータ回路を示す回路図である。図8は、実施の形態1の電子装置に含まれるノイズフィルタを示す回路図である。なお、図7において、符号CPHを付した点線で囲まれた部分が、半導体チップCPH内に形成され、符号CPLを付した点線で囲まれた部分が、半導体チップCPL内に形成され、符号CPCを付した点線で囲まれた部分が、半導体チップCPC内に形成され、符号PKGを付した一点鎖線で囲まれた部分が、半導体装置PKG内に形成されている。
次に、実施の形態1のノイズフィルタFIL1について詳細に説明する。図8は、実施の形態1のノイズフィルタFIL1を示す回路図である。
以下、本発明者が検討した検討例について説明する。図9は、検討例1の電子装置EDにおいて、図1のA1-A1線に相当する位置で切断した断面図である。図10は、検討例2の電子装置EDにおいて、図1のA1-A1線に相当する位置で切断した断面図である。図11は、検討例3の電子装置EDにおいて、図1のA1-A1線に相当する位置で切断した断面図である。
図8に示すように、実施の形態1の主要な特徴のうちの一つは、ノイズフィルタFIL1は、端子TM1と、端子TM1に接続されたリードLD1およびリード連結部LB1(図2参照)と、リード連結部LB1に接着層BD5を介して接続された金属板MP1と、リード連結部LB1と金属板MP1との間に接続されたキャパシタDC1とを含んでいることである。
以下、上記実施の形態1の変形例(以下、変形例1)の電子装置の構成について、図14および図15を用いて説明する。図14は、変形例1の電子装置を図1のA1-A1線に相当する位置で切断した断面図である。図15は、検討例3、上記実施の形態1および変形例1のノイズフィルタを示す回路図である。
以下、実施の形態2の電子装置の構成について、図17~図20を用いて説明する。図17は、実施の形態2の半導体装置PKGを下面側から見たときの、封止体MRを透視した平面透視図を示している。図18は、図17に示す電子装置EDにおいて、図17のA2-A2線に相当する位置で切断した断面図である。図19は、図17に示す電子装置EDにおいて、図17のA3-A3線に相当する位置で切断した断面図である。図20は、実施の形態2の電子装置EDに含まれるインバータ回路を示す回路図である。
以下、実施の形態3の電子装置の構成について、図21および図22を用いて説明する。図21は、実施の形態3の電子装置を図1のA1-A1線に相当する位置で切断した断面図である。図22は、実施の形態3のキャパシタDC3aの構成を示す部分拡大断面図である。
以下、実施の形態3の変形例(以下、変形例2)の電子装置の構成について、図23および図24を用いて説明する。図23は、変形例2の電子装置を図1のA1-A1線に相当する位置で切断した断面図である。図24は、変形例2のキャパシタDC3bの構成を示す部分拡大断面図である。
以下、実施の形態4の電子装置の構成について、図25および図26を用いて説明する。図25は、実施の形態4の電子装置を図1のA1-A1線に相当する位置で切断した断面図である。図26は、実施の形態4のキャパシタDC4の構成を示す部分拡大断面図である。
以下、実施の形態5の電子装置の構成について、図27を用いて説明する。図27は、実施の形態5のノイズフィルタを示す回路図である。
第1主面を有する配線基板と、
前記配線基板の前記第1主面上に搭載された半導体装置と、
を有する電子装置であって、
前記配線基板は、
グランド電位または電源電位を供給する導体パターンが形成された第1配線層を有し、
前記半導体装置は、
複数のパッドが形成された第2主面と、前記第2主面の反対側の第2裏面と、を有する第1半導体チップと、
前記第1半導体チップが搭載され、かつ、前記第1半導体チップの第2裏面と向かい合う第3主面と、前記第3主面の反対側の第3裏面と、を有する第1チップ搭載部と、
前記複数のパッドに複数の導電性接続部材を介してそれぞれ電気的に接続された複数のリードと、
前記第1半導体チップ、前記第1チップ搭載部の少なくとも一部、前記複数の導電性接続部材、および、前記複数のリードの一部を封止し、第4主面と、前記第4主面の反対側の第4裏面とを有する封止体と、
を含み、
前記第1チップ搭載部の前記第3裏面は、前記封止体の前記第4主面側を向いており、
前記封止体の前記第4裏面は、前記配線基板の前記第1主面と向かい合っており、
前記封止体内の前記第4裏面側には、第10導体部材が形成され、
前記第10導体部材は、前記複数の導電性接続部材のうち、前記複数のパッドのうちの第1パッドと、前記複数のリードのうちの第1リードとを接続する第1導電性接続部材に接合されており、
前記第10導体部材は、開放スタブ回路を構成し、
前記第10導体部材の長さは、第1周波数における第1波長の1/4の長さである、電子装置。
第1主面を有する配線基板と、
前記配線基板の前記第1主面上に搭載された半導体装置を含む1つ以上の部品と、
を有する電子装置であって、
前記配線基板は、
グランド電位または電源電位を供給する導体パターンが形成された第1配線層を有し、
前記半導体装置は、
複数のパッドが形成された第2主面と、前記第2主面の反対側の第2裏面と、を有する第1半導体チップと、
前記第1半導体チップが搭載され、かつ、前記第1半導体チップの第2裏面と向かい合う第3主面と、前記第3主面の反対側の第3裏面と、を有する第1チップ搭載部と、
前記複数のパッドに複数の導電性接続部材を介してそれぞれ電気的に接続された複数のリードと、
前記第1半導体チップ、前記第1チップ搭載部の少なくとも一部、前記複数の導電性接続部材、および、前記複数のリードの一部を封止し、第4主面と、前記第4主面の反対側の第4裏面とを有する封止体と、
を含み、
前記第1チップ搭載部の前記第3裏面は、前記封止体の前記第4主面側を向いており、
前記封止体の前記第4裏面は、前記配線基板の前記第1主面と向かい合っており、
前記封止体内の前記第4裏面側には、第11導体部材が形成され、
前記第11導体部材は、前記1つ以上の部品のいずれとも電気的に接続されておらず、
前記第11導体部材は、開放スタブ回路を構成し、
前記第11導体部材の長さは、第1周波数における第1波長の1/2の長さである、電子装置。
BD,BD1,BD2,BD3,BD4,BD5,BD6,BD7,BD8,BD9,BD10,BD11,BD12,BD13,BD14,BD15 接着層
BEH 裏面電極
BEL 裏面電極
BW ワイヤ
CD 電極(導体パターン)
CE1,CE2a,CE2b,CE2c,CE2d,CE3a,CE3b,CE3c,CE3d,CE3e,CE3f,CE3g,CE3h,CE4a,CE4b 電極
CL コイル
CLC 制御回路
CP,CPC,CPH,CPL 半導体チップ
CT 制御回路
DC1,DC101,DC102,DC103,DC1a,DC1b,DC2a,DC2b,DC2c,DC2d,DC3a,DC3b,DC4 キャパシタ
DE,DE3a,DE3b,DE3c,DE3d,DE3e,DE3f,DE3g,DE3h,DE4 絶縁材(誘電体)
DP,DPC,DPH,DPL ダイパッド(チップ搭載部)
ED 電子装置
FIL,FIL1,FIL101,FIL102,FIL103,FIL1a,FIL2a,FIL2b,FIL2c,FIL2d,FIL3,FIL3a,FIL3b,FIL4,FIL5 ノイズフィルタ
IL,IL1,IL2 絶縁層
LB1,LB3 リード連結部
LD,LD1,LD2,LD3,LD4,LD5,LD6,LD7,LD8 リード
LF リードフレーム
MOT モータ
MP ミアンダ配線
MP1,MP2,MP3,MP4,MP5 金属板
MR 封止体
PB1,PB2 配線基板
PD,PDC,PDHD,PDHG,PDHS,PDLD,PDLG,PDLS パッド
PKG,PKG2 半導体装置
SD 接合材
ST 開放スタブ
TE1,TE2,TE3,TE4,TE5,TE6 端子
TL 吊りリード
TM,TM1,TM2,TM3,TM4,TM5 端子
WL1 配線層
WR102,WR103,WR1b 配線
Claims (19)
- 第1主面を有する配線基板と、
前記配線基板の前記第1主面上に搭載された半導体装置と、
を有する電子装置であって、
前記配線基板は、
導体パターンが形成された第1配線層を有し、
前記配線基板の前記第1主面には、複数の端子が配置され、
前記半導体装置は、
複数のパッドが形成された第2主面と、前記第2主面の反対側の第2裏面と、を有する第1半導体チップと、
前記第1半導体チップが搭載され、かつ、前記第1半導体チップの第2裏面と向かい合う第3主面と、前記第3主面の反対側の第3裏面と、を有する第1チップ搭載部と、
前記複数のパッドに複数の導電性接続部材を介してそれぞれ電気的に接続された複数のリードと、
前記第1半導体チップ、前記第1チップ搭載部の少なくとも一部、前記複数の導電性接続部材、および、前記複数のリードの一部を封止し、第4主面と、前記第4主面の反対側の第4裏面とを有する封止体と、
を含み、
前記第1チップ搭載部の前記第3裏面は、前記封止体の前記第4主面側を向いており、
前記封止体の前記第4裏面は、前記配線基板の前記第1主面と向かい合っており、
前記封止体内には、第1導体部材が形成されており、
前記複数のリードは、前記配線基板の前記複数の端子にそれぞれ電気的に接続されており、
前記複数の導電性接続部材のうちの第1導電性接続部材は、前記複数のパッドのうちの第1パッドと、前記複数のリードのうちの第1リードとを接続しており、
前記第1導体部材は、前記第1導電性接続部材に接合されており、
前記第1導体部材と前記導体パターンとの距離は、前記第1導電性接続部材と前記導体パターンとの距離よりも短く、
平面視において、前記第1導体部材と前記導体パターンとは、重なっており、
前記第1導体部材に供給される電位と、前記導体パターンに供給される電位とは異なっており、
前記第1導体部材と前記導体パターンとにより、第1キャパシタが構成されている、電子装置。 - 請求項1記載の電子装置において、
前記第1導電性接続部材は、前記複数のリードのいずれよりも幅広の金属板からなる、電子装置。 - 請求項1記載の電子装置において、
前記封止体の前記第4裏面と、前記配線基板の前記第1主面との間には、第1絶縁材が形成されており、
前記第1絶縁材を構成する材料の比誘電率は、前記封止体を構成する材料の比誘電率よりも大きい、電子装置。 - 請求項1記載の電子装置において、
平面視において、前記第1導体部材の面積は、前記第1導電性接続部材の面積よりも大きい、電子装置。 - 請求項4記載の電子装置において、
平面視において、前記導体パターンの面積は、前記第1導体部材の面積よりも大きく、
前記導体パターンは、前記第1導体部材を内包している、電子装置。 - 請求項1記載の電子装置において、
前記配線基板の前記複数の端子のうちの第1端子には、電源電位が供給されており、
前記配線基板の前記複数の端子のうちの第2端子には、前記電源電位よりも低い基準電位が供給されており、
前記半導体装置の前記第1リードは、前記配線基板の前記第1端子と電気的に接続されており、
前記導体パターンは、前記配線基板の前記第2端子と電気的に接続されている、電子装置。 - 請求項6記載の電子装置において、
前記第1端子、前記第1リード、前記第1導電性接続部材、および、前記第1キャパシタは、ノイズフィルタ回路を構成している、電子装置。 - 請求項6記載の電子装置において、
前記第1半導体チップは、ハイサイドスイッチ用の第1電界効果トランジスタを含み、
前記第1パッドは、前記第1電界効果トランジスタの第1ドレインと電気的に接続される第1ドレイン電極であり、
前記第1半導体チップは、さらに、前記第2裏面上に形成され、かつ、前記第1電界効果トランジスタの第1ソースと電気的に接続される第1ソース電極を有し、
前記半導体装置は、
ロウサイドスイッチ用の第2電界効果トランジスタを含み、第5主面および前記第5主面の反対側の第5裏面を有する第2半導体チップと、
ここで、前記第2半導体チップは、さらに、前記第5主面上に形成され、かつ、前記第2電界効果トランジスタの第2ドレインと電気的に接続される第2ドレイン電極と、前記第5裏面上に形成され、かつ、前記第2電界効果トランジスタの第2ソースと電気的に接続される第2ソース電極を有し、
前記第1半導体チップおよび前記第2半導体チップのそれぞれを制御する回路を含み、第6主面と、前記第6主面の反対側の第6裏面と、を有する第3半導体チップと、
前記第2半導体チップが搭載され、かつ、前記第2半導体チップの前記第5裏面と向かい合う第7主面と、前記第7主面の反対側の第7裏面と、を有する第2チップ搭載部と、
前記第3半導体チップが搭載され、かつ、前記第3半導体チップの前記第6裏面と向かい合う第8主面と、前記第8主面の反対側の第8裏面と、を有する第3チップ搭載部と、
前記第1半導体チップの前記第1ソース電極に電気的に接続された第2リードと、
前記第2半導体チップの前記第2ドレイン電極に第2導電性接続部材を介して電気的に接続された第3リードと、
前記第2半導体チップの前記第2ソース電極に電気的に接続された第4リードと、
をさらに含み、
前記封止体は、前記第2半導体チップと、前記第3半導体チップと、前記第2チップ搭載部の少なくとも一部と、前記第3チップ搭載部の少なくとも一部と、前記第2リードの一部と、前記第3リードの一部と、前記第4リードの一部と、をさらに封止しており、
前記第2チップ搭載部の第7裏面は、前記封止体の前記第4主面側を向いており、
前記第3チップ搭載部の第8裏面は、前記封止体の前記第4主面側を向いている、電子装置。 - 請求項8記載の電子装置において、
前記第1半導体チップ、前記第2半導体チップおよび前記第3半導体チップは、インバータ回路を形成するために用いられる、電子装置。 - 請求項8記載の電子装置において、
前記第1端子と前記第2端子との間には、デカップリングキャパシタが接続されている、電子装置。 - 請求項8記載の電子装置において、
平面視において、前記封止体は、第1方向に沿って延在する第1辺と、前記第1方向に沿って延在し、かつ前記第1辺とは反対側に位置する第2辺と、を有し、
前記封止体内の前記第4裏面側には、第2導体部材、第3導体部材および第4導体部材がさらに形成され、
平面視において、前記第1導体部材と前記第2導体部材と前記第3導体部材と前記第4導体部材とは、それぞれ互いに重なっておらず、かつ、前記第1方向に沿って並んでおり、
前記第2導体部材、前記第3導体部材および前記第4導体部材のそれぞれに供給される電位と、前記導体パターンに供給される電位とは異なっており、
前記第2導体部材と前記導体パターンとにより、第2キャパシタが構成され、
前記第3導体部材と前記導体パターンとにより、第3キャパシタが構成され、
前記第4導体部材と前記導体パターンとにより、第4キャパシタが構成されている、電子装置。 - 請求項11記載の電子装置において、
平面視において、前記第1辺と前記第2辺との間で、かつ、前記第1半導体チップと前記第2半導体チップとの間に、前記第3半導体チップが配置され、
平面視において、前記第1半導体チップと前記第3半導体チップと前記第2半導体チップとは、前記第1方向に沿って並んでいる、電子装置。 - 請求項12記載の電子装置において、
前記第4導体部材は、前記第2導電性接続部材に接合されており、
前記第4導体部材と前記導体パターンとの距離は、前記第2導電性接続部材と前記導体パターンとの距離よりも短い、電子装置。 - 請求項13記載の電子装置において、
前記第2導電性接続部材は、前記複数のリードのいずれよりも幅広の金属板からなる、電子装置。 - 請求項1記載の電子装置において、
前記封止体内の前記第4裏面側には、前記第1導体部材に第2絶縁材を介して向かい合う第5導体部材と、前記第5導体部材に第3絶縁材を介して向かい合う第6導体部材とがさらに形成され、
前記第5導体部材に供給される電位は、前記導体パターンに供給される電位と同じであり、
前記第6導体部材に供給される電位は、前記第1導体部材に供給される電位と同じであり、
前記第1導体部材と、前記第5導体部材と、前記第6導体部材と、前記導体パターンとにより、第5キャパシタが構成されている、電子装置。 - 請求項15記載の電子装置において、
前記封止体内の前記第4裏面側には、前記第6導体部材に第4絶縁材を介して向かい合う第7導体部材と、前記第7導体部材に第5絶縁材を介して向かい合う第8導体部材と、がさらに形成され、
前記第7導体部材に供給される電位は、前記導体パターンに供給される電位と同じであり、
前記第8導体部材に供給される電位は、前記第1導体部材に供給される電位と同じであり、
前記第1導体部材と、前記第5導体部材と、前記第6導体部材と、前記第7導体部材と、前記第8導体部材と、前記導体パターンとにより、第6キャパシタが構成されている、電子装置。 - 第1主面を有する配線基板と、
前記配線基板の前記第1主面上に搭載された半導体装置と、
を有する電子装置であって、
前記配線基板の前記第1主面には、複数の端子が配置され、
前記半導体装置は、
複数のパッドが形成された第2主面と、前記第2主面の反対側の第2裏面と、を有する第1半導体チップと、
前記第1半導体チップが搭載され、かつ、前記第1半導体チップの第2裏面と向かい合う第3主面と、前記第3主面の反対側の第3裏面と、を有する第1チップ搭載部と、
前記複数のパッドに複数の導電性接続部材を介してそれぞれ電気的に接続された複数のリードと、
前記第1半導体チップ、前記第1チップ搭載部の少なくとも一部、前記複数の導電性接続部材、および、前記複数のリードの一部を封止し、第4主面と、前記第4主面の反対側の第4裏面とを有する封止体と、
を含み、
前記封止体内には、第1導体部材と、絶縁材を介して前記第1導体部材と対向して配置された第9導体部材とが形成されており、
前記複数のリードは、前記配線基板の前記複数の端子にそれぞれ電気的に接続されており、
前記複数の導電性接続部材のうちの第3導電性接続部材は、前記複数のパッドのうちの第1パッドと、前記複数のリードのうちの第1リードとを接続しており、
前記第1導体部材は、前記第3導電性接続部材を介して前記第1パッドと電気的に接続されており、
平面視において、前記第1導体部材および前記第9導体部材の面積は、前記複数のリードのいずれの面積よりも大きく、
前記第1導体部材に供給される電位と、前記第9導体部材に供給される電位とは異なっており、
平面視において、前記第1導体部材と前記第9導体部材とは、重なっており、
前記第1導体部材と前記第9導体部材とにより、第7キャパシタが構成されており、
平面視において、前記第1導体部材および前記第9導体部材の面積は、前記封止体の面積と同等以上である、電子装置。 - 請求項17記載の電子装置において、
前記第1導体部材は、前記複数のリードのいずれよりも幅広の金属板を介して、前記第1リードに接合されている、電子装置。 - 請求項17記載の電子装置において、
前記第1チップ搭載部の前記第3裏面は、前記封止体の前記第4裏面側を向いており、
前記封止体の前記第4裏面は、前記配線基板の前記第1主面と向かい合っており、
前記第9導体部材と前記第1導体部材との距離は、前記第9導体部材と前記第1リードとの距離よりも短い、電子装置。
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