JP2015008229A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2015008229A JP2015008229A JP2013133174A JP2013133174A JP2015008229A JP 2015008229 A JP2015008229 A JP 2015008229A JP 2013133174 A JP2013133174 A JP 2013133174A JP 2013133174 A JP2013133174 A JP 2013133174A JP 2015008229 A JP2015008229 A JP 2015008229A
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Abstract
【解決手段】半導体チップ11と半導体チップ21を有するSOP1において、チップ間のワイヤ接続で、ワイヤ群6のうちワイヤ群7に最も近接するワイヤ6aとワイヤ群7のうちワイヤ群6に最も近接するワイヤ7aとのワイヤ間距離Lは、ワイヤ群6内およびワイヤ群7内のいずれのワイヤ間距離よりも大きいことにより、絶縁耐圧を確保することができる。これにより、SOP1の信頼性の向上を図ることができる。
【選択図】図1
Description
図1は実施の形態の半導体装置の構造の一例を封止体を透過して示す平面図、図2は図1のA−A線に沿って切断した構造の一例を示す断面図、図3は図1に示す半導体装置の送受信部の回路ブロックの一例を示すブロック図、図4は図1に示す半導体装置を用いたシステムブロックの一例を示す図である。また、図5は図1に示す半導体装置の各半導体チップにおけるインダクタ配置の一例を示す透過平面図、図6は図5に示すインダクタ配置の一例を拡大して示す平面図、図7は図1の半導体装置の2つの半導体チップにおけるパッド高さの一例を示す概念図、図8は図1の半導体装置における封止樹脂の耐圧と距離の関係の一例を示す耐圧概念図である。
[項1]
a)第1吊りリードによって支持された第1チップ搭載部、第2吊りリードによって支持された第2チップ搭載部、前記第1チップ搭載部に隣接して配置された複数の第1リード、および前記第2チップ搭載部に隣接して配置された複数の第2リード、を有するリードフレームを準備する工程と、
b)前記第1チップ搭載部上に第1半導体チップを搭載し、前記第2チップ搭載部上に第2半導体チップを搭載する工程と、
c)前記第1半導体チップの複数のパッドの一部と前記第2半導体チップの複数のパッドの一部とをそれぞれ複数のワイヤにより電気的に接続する工程と、
d)前記第1半導体チップの複数のパッドの一部と前記複数の第1リードとをそれぞれ複数のワイヤにより電気的に接続する工程と、
e)前記第2半導体チップの複数のパッドの一部と前記複数の第2リードとをそれぞれ複数のワイヤにより電気的に接続する工程と、
f)前記第1および第2半導体チップ、前記第1および第2吊りリードの一部、前記第1および第2チップ搭載部、前記複数の第1および第2リードの一部、および複数のワイヤを封止し、第1方向に伸びる第1辺と、前記第1方向とは実質的に直交する方向の第2方向に伸びる第2辺と、を備えた封止体を形成する工程と、
g)前記第1および第2吊りリード、および前記複数の第1および第2リードを前記リードフレームから切り離す工程と、を有し、
前記第1半導体チップは、その表面に複数の第1パッドと複数の第2パッドとが配置され、
前記第2半導体チップは、その表面に複数の第3パッドと複数の第4パッドとが配置され、
前記c)工程は、
c1)前記第1半導体チップの前記複数の第1パッドと前記第2半導体チップの前記複数の第4パッドとをそれぞれ第1ワイヤ群に含まれる複数の第1ワイヤで接続する工程と、
c2)前記第1半導体チップの前記複数の第2パッドと前記第2半導体チップの前記複数の第3パッドとをそれぞれ第2ワイヤ群に含まれる複数の第2ワイヤで接続する工程と、を含み、
前記c1)およびc2)工程は、平面視ならびに前記第1方向において、前記第1ワイヤ群のうち前記第2ワイヤ群に最も近接するワイヤと前記第2ワイヤ群のうち前記第1ワイヤ群に最も近接するワイヤとのワイヤ間距離は、前記第1ワイヤ群内および前記第2ワイヤ群内のいずれのワイヤ間距離よりも大きくなるように行う半導体装置の製造方法。
項1に記載の半導体装置の製造方法において、
前記c1)工程は、
c11)前記複数の第1パッドのうちの1つのパッド上に第1スタッドバンプを形成する工程と、
c12)前記c11)工程の後、前記複数の第4パッドのうちの1つのパッド上にワイヤの一端を接続する工程と、
c13)前記c12)工程の後、前記第1スタッドバンプ上に前記ワイヤの他端を接続する工程を含む半導体装置の製造方法。
項2に記載の半導体装置の製造方法において、
前記c2)工程は、
c21)前記複数の第3パッドのうちの1つのパッド上に第2スタッドバンプを形成する工程と、
c22)前記c21)工程の後、前記複数の第2パッドのうちの1つのパッド上にワイヤの一端を接続する工程と、
c23)前記c22)工程の後、前記第2スタッドバンプ上に前記ワイヤの他端を接続する工程を含む半導体装置の製造方法。
項1に記載の半導体装置の製造方法において、
前記第1および第2チップ搭載部は、第1端部と、前記第1方向において、前記第1端部と対向する第2端部と、をそれぞれ有し、
前記第1および第2吊りリードは、前記第1および第2チップ搭載部の前記第1端部にそれぞれ接続されており、
前記c)からe)工程は、前記第1および第2チップ搭載部のそれぞれの第2端部をクランパにより押さえた状態で行う半導体装置の製造方法。
項4に記載の半導体装置の製造方法において、
前記第1および第2チップ搭載部の前記第2端部は、開放端となっている半導体装置の製造方法。
項5に記載の半導体装置の製造方法において、
前記第1半導体チップの複数のパッドの一部と前記第1吊りリードとをワイヤにより電気的に接続する工程と、前記第2半導体チップの複数のパッドの一部と前記第2吊りリードとをワイヤにより電気的に接続する工程と、を有する半導体装置の製造方法。
項5に記載の半導体装置の製造方法において、
前記封止体は、前記第1辺と交差し、前記第2方向に伸びる第2辺と、前記第2辺と対向し、前記第2方向に伸びる第4辺と、を有し、
前記第1および第2吊りリードは、平面視において、前記第4辺よりも前記第2辺に近くなるように設けられ、
前記f)工程は、前記第2辺側から前記第4辺に向かって絶縁樹脂を流して、前記封止体を形成する半導体装置の製造方法。
項7に記載の半導体装置の製造方法において、
前記f)工程は、
f1)第1キャビティを有する第1金型と、前記第1金型に対向した第2金型と、を準備する工程と、
f2)前記第1金型の前記第1キャビティ内に前記第1および第2半導体チップが位置するように前記リードフレームを位置決めする工程と、
f3)前記リードフレームを前記第1金型と前記第2金型とで挟む工程と、
f4)前記第1キャビティと繋がったゲートから前記絶縁樹脂を前記第1キャビティ内に流し込む工程を有する半導体装置の製造方法。
項4に記載の半導体装置の製造方法において、
前記c)からe)工程は、ボンディングツールを介して前記複数のワイヤのそれぞれに超音波を印加することにより行う半導体装置の製造方法。
項1に記載の半導体装置の製造方法において、
前記第1および第2半導体チップは同一の半導体チップであって、
前記b)工程は、前記第2半導体チップを、前記第1半導体チップの搭載方向に対して、180度回転させてから前記第2チップ搭載部上に搭載する半導体装置の製造方法。
項3に記載の半導体装置の製造方法において、
前記複数の第1パッドのうち、前記第1スタッドバンプが形成されるパッドの下、および前記複数の第3パッドのうち、前記第2スタッドバンプが形成されるパッドの下には、絶縁層が配置されている半導体装置の製造方法。
項11に記載の半導体装置の製造方法において、
前記絶縁層は、ポリイミドからなる層を含む半導体装置の製造方法。
項8に記載の半導体装置の製造方法において、
前記第1キャビティの深さは、断面視において、前記第1および第2ワイヤ群のそれぞれのワイヤのワイヤ頂点から前記封止体の上面までの距離が、前記第1半導体チップのチップ厚以上となる深さである半導体装置の製造方法。
2 ダイボンド材(接着剤)
3 封止体
3a 第1辺
3b 第2辺
3c 第3辺
3d 第4辺
3e 上面
4 第1方向
5 第2方向
6 ワイヤ群
6a ワイヤ
7 ワイヤ群
7a ワイヤ
8 外装めっき
9 第1電源系統
10 第2電源系統
11 半導体チップ
11a 表面
11b 裏面
11c,11d,11e,11f パッド
11g,11h,11i,11j 辺
11k,11m 絶縁層
12 送信部
12a 送信回路
12b コイル
12c コイル
13 受信部
13a 受信回路
14 ダイパッド
14a 上面
14b 貫通穴
14c 第1端部
14d 第2端部
14e 開放端
15 吊りリード
16 インナリード
17 アウタリード
18 ワイヤ群
18a ワイヤ
19 ワイヤ群
19a ワイヤ
20 第1スタッドバンプ
21 半導体チップ
21a 表面
21b 裏面
21c,21d,21e,21f パッド
21g,21h,21i,21j 辺
21m 絶縁層
22 送信部
22a 送信回路
22b コイル
22c コイル
23 受信部
23a 受信回路
24 ダイパッド
24a 上面
24b 貫通穴
24c 第1端部
24d 第2端部
24e 開放端
25 吊りリード
26 インナリード
27 アウタリード
28 ワイヤ群
28a ワイヤ
29 ワイヤ群
29a ワイヤ
30 第2スタッドバンプ
31 制御回路
32 駆動回路
33 モータ
34 リードフレーム
34a デバイス領域
35,36 T字リード
37 超音波ホーン
38 キャピラリ
39 クランパ
40 樹脂成形金型
40a 上型
40b 下型
40c,40d キャビティ
40e ゲート
41 封止用樹脂(絶縁樹脂)
42 SOP(半導体装置)
Claims (20)
- 外部に信号を送信する第1送信部と、外部からの信号を受信する第1受信部と、を備え、複数のパッドが配置された表面を有する第1半導体チップと、
外部に信号を送信する第2送信部と、外部からの信号を受信する第2受信部と、を備え、複数のパッドが配置された表面を有する第2半導体チップと、
前記第1半導体チップが搭載された第1上面を有する第1チップ搭載部と、
前記第2半導体チップが搭載された第2上面を有する第2チップ搭載部と、
前記第1チップ搭載部を支持する第1吊りリードと、
前記第2チップ搭載部を支持する第2吊りリードと、
前記第1チップ搭載部に隣接して配置された複数の第1リードと、
前記第2チップ搭載部に隣接して配置された複数の第2リードと、
前記第1半導体チップと前記第2半導体チップとを電気的に接続し、複数の第1ワイヤを含む第1ワイヤ群と、
前記第1半導体チップと前記第2半導体チップとを電気的に接続し、複数の第2ワイヤを含む第2ワイヤ群と、
前記第1半導体チップと前記複数の第1リードとを電気的に接続し、複数の第3ワイヤを含む第3ワイヤ群と、
前記第2半導体チップと前記複数の第2リードとを電気的に接続し、複数の第4ワイヤを含む第4ワイヤ群と、
第1方向に伸びる第1辺と、前記第1方向とは実質的に直交する方向の第2方向に伸びる第2辺と、を備え、前記第1および第2半導体チップ、前記第1および第2チップ搭載部、前記第1および第2吊りリードの一部、前記複数の第1および第2リードの一部、および前記複数の第1、第2、第3、および第4ワイヤを封止する封止体と、を有し、
前記第1半導体チップの前記表面には、前記第1送信部と電気的に接続された複数の第1パッドと、前記第1受信部と電気的に接続された複数の第2パッドと、が配置され、
前記第2半導体チップの前記表面には、前記第2送信部と電気的に接続された複数の第3パッドと、前記第2受信部と電気的に接続された複数の第4パッドと、が配置され、
前記第1半導体チップの前記複数の第1パッドと前記第2半導体チップの前記複数の第4パッドとは、前記第1ワイヤ群を介してそれぞれ電気的に接続され、
前記第1半導体チップの前記複数の第2パッドと前記第2半導体チップの前記複数の第3パッドとは、前記第2ワイヤ群を介してそれぞれ電気的に接続され、
平面視ならびに前記第1方向において、前記第1ワイヤ群のうち前記第2ワイヤ群に最も近接するワイヤと前記第2ワイヤ群のうち前記第1ワイヤ群に最も近接するワイヤとのワイヤ間距離は、前記第1ワイヤ群内および前記第2ワイヤ群内のいずれのワイヤ間距離よりも大きい半導体装置。 - 請求項1に記載の半導体装置において、
前記封止体は、前記第1辺と対向する第3辺を有し、
平面視において、前記複数の第1リードは、前記第1辺に沿って配置され、
平面視において、前記複数の第2リードは、前記第3辺に沿って配置され、
平面視において、前記第1チップ搭載部は、前記複数の第1リードと前記第2チップ搭載部との間に配置され、
平面視において、前記第2チップ搭載部は、前記複数の第2リードと前記第1チップ搭載部との間に配置され、
平面視ならびに前記第2方向において、前記第1チップ搭載部と前記第2チップ搭載部との間の距離は、前記第1チップ搭載部と前記複数の第1リードとの間の距離と前記第2チップ搭載部と前記複数の第2リードとの間の距離よりも大きい半導体装置。 - 請求項2に記載の半導体装置において、
前記第1半導体チップは、前記第1方向に伸びる第1チップ辺、前記第1チップ辺に対向し、前記第1方向に伸びる第2チップ辺、前記第1チップ辺と交差し、前記第2方向に伸びる第3チップ辺、および前記第3チップ辺に対向し、前記第2方向に伸びる第4チップ辺を有し、
平面視において、前記複数の第2パッドは、前記複数の第1パッドよりも前記第1半導体チップの前記第1チップ辺に近くなるように配置されている半導体装置。 - 請求項3に記載の半導体装置において、
平面視において、前記第1半導体チップの前記第1チップ辺は、前記第2チップ搭載部に対向し、前記第1半導体チップの前記第2チップ辺は、前記複数の第1リードに対向している半導体装置。 - 請求項4に記載の半導体装置において、
前記第1および第2半導体チップは同一の半導体チップであって、
前記第2半導体チップは、前記第1半導体チップの搭載方向に対して、180度回転した状態で前記第2チップ搭載部上に搭載されている半導体装置。 - 請求項3に記載の半導体装置において、
前記第1半導体チップの前記表面には複数の第5パッドが前記第3チップ辺に沿って配置され、
前記複数の第5パッドの一部のパッドは、第5ワイヤを介して前記第1チップ搭載部の前記第1上面と電気的に接続されている半導体装置。 - 請求項6に記載の半導体装置において、
前記第1半導体チップは接着剤を介して前記第1チップ搭載部の前記第1上面上に搭載されており、
平面視において、前記第1半導体チップと前記第5ワイヤが前記第1チップ搭載部の前記第1上面と接続している部分との間の前記第1上面の領域には、貫通穴が設けられている半導体装置。 - 請求項6に記載の半導体装置において、
前記第1吊りリードは、前記封止体の前記第1辺に沿って配置され、
前記複数の第1リードの一部、および前記第1吊りリードの一部は、前記封止体の前記第1辺から露出している半導体装置。 - 請求項8に記載の半導体装置において、
前記第1吊りリードは、外部から接地電圧を供給可能なリードである半導体装置。 - 請求項6に記載の半導体装置において、
前記複数の第5パッドのうち、ワイヤが接続されてないパッドは、外部から電源電圧を供給可能なパッドである半導体装置。 - 請求項3に記載の半導体装置において、
前記第1半導体チップの前記表面には複数の第6パッドが前記第4チップ辺に沿って配置され、
前記複数の第6パッドの一部のパッドは、前記複数の第1リードの一部のリードと前記第3ワイヤ群の一部のワイヤを介して電気的に接続されている半導体装置。 - 請求項11に記載の半導体装置において、
前記複数の第6パッドの前記一部のパッドと接続されている前記リードは、前記封止体の前記第1辺から露出しており、外部から電源電圧を供給可能なリードである半導体装置。 - 請求項12に記載の半導体装置において、
前記複数の第6パッドのうち、ワイヤが接続されていないパッドは、外部から接地電圧を供給可能なパッドである半導体装置。 - 請求項1に記載の半導体装置において、
断面視において、前記第1および第2ワイヤ群のそれぞれのワイヤのワイヤ頂点から前
記封止体の上面までの距離は、前記第1半導体チップのチップ厚以上である半導体装置。 - 請求項3に記載の半導体装置において、
前記第1送信部は、送信回路、前記送信回路と電気的に接続された第1コイル、および前記第1コイル上に配置され、前記第1コイルとは電気的に絶縁され、前記複数の第1パッドのうちの一部のパッドと電気的に接続された第2コイルを備え、
平面視において、前記第2コイルと接続されたパッドは、その周囲を前記第2コイルに囲まれるように配置された半導体装置。 - 請求項15に記載の半導体装置において、
断面視において、前記第1コイルと前記第2コイルとの間には絶縁層が配置されている半導体装置。 - 請求項16に記載の半導体装置において、
前記絶縁層は、ポリイミドからなる層を含む半導体装置。 - 請求項1に記載の半導体装置において、
前記第1受信部は受信回路を備え、前記受信回路は前記複数の第2パッドのうちの一部のパッドと電気的に接続されている半導体装置。 - a)第1吊りリードによって支持された第1チップ搭載部、第2吊りリードによって支持された第2チップ搭載部、前記第1チップ搭載部に隣接して配置された複数の第1リード、および前記第2チップ搭載部に隣接して配置された複数の第2リード、を有するリードフレームを準備する工程と、
b)前記第1チップ搭載部上に第1半導体チップを搭載し、前記第2チップ搭載部上に第2半導体チップを搭載する工程と、
c)前記第1半導体チップの複数のパッドの一部と前記第2半導体チップの複数のパッドの一部とをそれぞれ複数のワイヤにより電気的に接続する工程と、
d)前記第1半導体チップの複数のパッドの一部と前記複数の第1リードとをそれぞれ複数のワイヤにより電気的に接続する工程と、
e)前記第2半導体チップの複数のパッドの一部と前記複数の第2リードとをそれぞれ複数のワイヤにより電気的に接続する工程と、
f)前記第1および第2半導体チップ、前記第1および第2吊りリードの一部、前記第1および第2チップ搭載部、前記複数の第1および第2リードの一部、および複数のワイヤを封止し、第1方向に伸びる第1辺と、前記第1方向とは実質的に直交する方向の第2方向に伸びる第2辺と、を備えた封止体を形成する工程と、
g)前記第1および第2吊りリード、および前記複数の第1および第2リードを前記リードフレームから切り離す工程と、を有し、
前記第1半導体チップは、その表面に複数の第1パッドと複数の第2パッドとが配置され、
前記第2半導体チップは、その表面に複数の第3パッドと複数の第4パッドとが配置され、
前記c)工程は、
c1)前記第1半導体チップの前記複数の第1パッドと前記第2半導体チップの前記複数の第4パッドとをそれぞれ第1ワイヤ群に含まれる複数の第1ワイヤで接続する工程と、
c2)前記第1半導体チップの前記複数の第2パッドと前記第2半導体チップの前記複数の第3パッドとをそれぞれ第2ワイヤ群に含まれる複数の第2ワイヤで接続する工程と、を含み、
前記c1)およびc2)工程は、平面視ならびに前記第1方向において、前記第1ワイヤ群のうち前記第2ワイヤ群に最も近接するワイヤと前記第2ワイヤ群のうち前記第1ワイヤ群に最も近接するワイヤとのワイヤ間距離は、前記第1ワイヤ群内および前記第2ワイヤ群内のいずれのワイヤ間距離よりも大きくなるように行う半導体装置の製造方法。 - 請求項19に記載の半導体装置の製造方法において、
前記c1)工程は、
c11)前記複数の第1パッドのうちの1つのパッド上に第1スタッドバンプを形成する工程と、
c12)前記c11)工程の後、前記複数の第4パッドのうちの1つのパッド上にワイヤの一端を接続する工程と、
c13)前記c12)工程の後、前記第1スタッドバンプ上に前記ワイヤの他端を接続する工程を含む半導体装置の製造方法。
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