JP5425584B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP5425584B2 JP5425584B2 JP2009238459A JP2009238459A JP5425584B2 JP 5425584 B2 JP5425584 B2 JP 5425584B2 JP 2009238459 A JP2009238459 A JP 2009238459A JP 2009238459 A JP2009238459 A JP 2009238459A JP 5425584 B2 JP5425584 B2 JP 5425584B2
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- Wire Bonding (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Description
本願において、実施の態様の記載は、必要に応じて、便宜上複数のセクション等に分けて記載するが、特にそうでない旨明示した場合を除き、これらは相互に独立別個のものではなく、記載の前後を問わず、単一の例の各部分、一方が他方の一部詳細または一部または全部の変形例等である。また、原則として、同様の部分は繰り返しの説明を省略する。また、実施の態様における各構成要素は、特にそうでない旨明示した場合、理論的にその数に限定される場合および文脈から明らかにそうでない場合を除き、必須のものではない。
本実施の形態では電子部品がそれぞれ搭載された複数の配線基板を積層した半導体装置の例として、複数の半導体パッケージが積層されるPOP型半導体装置(以下、単にPOPと記載する)を取り上げて説明する。
図1は本実施の形態の半導体装置の全体構造を示す断面図である。図1において、POP(半導体装置)1は、メモリチップ2(電子部品、半導体チップ)が搭載されたサブパッケージ10の下層に、メモリチップ2を制御するマイコンチップ(電子部品、半導体チップ、コントローラチップ)3が搭載されたベースパッケージ20を積層配置した2段構造の積層型パッケージである。
次に、図1に示すベースパッケージ20の構造について説明する。図2は図1に示すベースパッケージの主面側の内部構造を示す透視平面図、図3は図1に示すベースパッケージの裏面側を示す平面図である。なお、図2では、主面側の各部材の配置を示すため、図1に示す封止樹脂27を取り除いた状態で示している。
次に、図1に示すサブパッケージ10の構造について説明する。図4は図1に示すサブ基板の主面側を示す平面図、図5は図1に示すサブ基板の裏面側を示す平面図である。
次に、図1に示すインタポーザ基板30の構造について説明する。図6は図1に示すインタポーザ基板の主面側を示す平面図、図7は図1に示すインタポーザ基板の裏面側を示す平面図である。
次に本実施の形態の半導体装置の製造方法について説明する。最初に本実施の形態の半導体装置の製造方法の概要について図1を用いて説明すると以下である。本実施の形態の半導体装置の製造方法は、ベース基板21に相当する基材を準備する基材準備工程を有している。また、ベース基板21に相当する基材の主面21a上にマイコンチップ3を搭載するダイボンディング工程を有している。また、ベース基板21の複数のランド23上にバンプ電極4をそれぞれ配置するバンプ電極形成工程を有している。また、マイコンチップ3の複数のパッド3dとベース基板21の複数の端子22とを複数のワイヤ26を介してそれぞれ電気的に接続するワイヤボンディング工程を有している。また、マイコンチップ3および複数のバンプ電極4を樹脂で封止し、封止樹脂27を形成する封止工程を有している。また、前記封止工程の後、複数のバンプ電極4のそれぞれの一部が露出するように、封止樹脂27の一部を除去するバンプ電極露出工程を有している。また、前記バンプ電極露出工程の後、複数のバンプ電極4のそれぞれの一部を、封止樹脂27の表面から突出させるバンプ電極突設工程を有している。また、バンプ電極突設工程の後、インタポーザ基板30に相当する基材を準備して、インタポーザ基板30を封止樹脂の表面上に搭載する基材積層工程を有している。また、ベース基板21に相当する基材の裏面21b側に半田ボール5を搭載するボールマウント工程を有している。また、ベース基板21に相当する基材上にインタポーザ基板30に相当する基材が搭載された状態で、これを切断し、個片化する個片化工程を有している。また、サブパッケージ10を準備して、インタポーザ基板30の主面30a上に搭載する、サブパッケージ搭載工程を有している。
前記実施の形態1では、半田ボールであるバンプ電極4に熱処理を施すことにより、封止樹脂27の表面27aから突出させる実施態様について説明した。しかし、積層する基板間を電気的に接続する導電性部材は、半田ボールからなるバンプ電極には限定されない。本実施の形態では、柱状の導電性部材を用いた実施態様について説明する。図26は本実施の形態の半導体装置の全体構造を示す断面図である。図27は図26に示す半導体装置の製造工程において、電極ポスト上にバンプ電極を接合して封止樹脂の表面から突出させる工程を示す要部拡大断面図である。なお、本実施の形態では、前記実施の形態1との相違点を中心に説明し、前記実施の形態1と重複する説明は原則として省略する。
前記実施の形態1では、半田からなるバンプ電極4に熱処理を施すことにより、封止樹脂27の表面27aから突出させる実施態様について説明した。本実施の形態では、バンプ電極4を突出させる別の製造方法について説明する。なお、本実施の形態では、前記実施の形態1との相違点を中心に説明し、前記実施の形態1と重複する説明は原則として省略する。
2 メモリチップ
2a 主面
2b 裏面
2c パッド
3 マイコンチップ
3a 主面
3b 裏面
3c 側面
3d パッド
4 バンプ電極
5 半田ボール
6 半田ボール
10 サブパッケージ
11 サブ基板
11a 主面
11b 裏面
11c チップ搭載領域
12 端子
13 ランド
14 ワイヤ
15 封止樹脂
20 ベースパッケージ
21 ベース基板
21a 主面
21b 裏面
21c チップ搭載領域
22 端子
23 ランド
24 ランド
25 配線
26 ワイヤ
27 封止樹脂
27a 表面
28 ベース基板
28a 製品形成領域
28b 枠部
28c 隙間
28d 絶縁膜
29 接着材
29a 表面
29b 裏面
30 インタポーザ基板
30a 主面
30b 裏面
31 ランド
32 ランド
32a ランド本体部
32b ニッケル膜
32c 金膜
33 ソルダレジスト膜
34 配線基板
35 接合材
40 コレット
41 成形金型
42 上金型
42a 下面
42b キャビティ
43 下金型
43a 上面
43b 窪み部
44 フィルム
45 ゲート部
46 エアベント部
47 ポット部
48 樹脂タブレット
48a 封止用樹脂
49 プランジャ
50 一括封止構造体
51 積層配線基板
52 ダイシングテープ
53 ダイシングブレード
61 電極ポスト
62 半田材
65 一括封止構造体
72 バンプ
73 アンダフィル樹脂
G1、G2 隙間
Claims (9)
- 以下の工程を含むことを特徴とする半導体装置の製造方法:
(a)主面、前記主面に形成された複数のボンディングリード、前記複数のボンディングリードよりも前記主面の周縁部側に形成された複数の第1ランド、前記主面とは反対側の裏面、および前記裏面に形成された複数の第2ランドを有する第1配線基板を準備する工程;
(b)前記第1配線基板の前記複数の第1ランド上に複数の第1導電性部材をそれぞれ配置する工程;
(c)主面、前記主面に形成された複数の電極パッド、および前記主面とは反対側の裏面を有する第1半導体チップを、前記第1配線基板の前記主面に搭載する工程;
(d)前記第1半導体チップの前記複数の電極パッドと前記第1配線基板の前記複数のボンディングリードとを複数の第2導電性部材を介してそれぞれ電気的に接続する工程;
(e)前記第1半導体チップおよび前記複数の第1導電性部材を樹脂で封止し、封止体を形成する工程;
(f)前記(e)工程の後、前記複数の第1導電性部材のそれぞれの一部が露出するように、前記封止体の一部を除去する工程;
(g)前記(f)工程の後、前記複数の第1導電性部材のそれぞれの一部を、前記封止体の表面から突出させる工程、
ここで、
前記(f)工程では、前記封止体の前記表面を研削することで、前記封止体の前記一部を除去し、
前記(g)工程では、熱処理を施すことで、前記複数の第1導電性部材のそれぞれの一部を、前記封止体の前記表面から突出させる。 - 請求項1において、
前記熱処理を施した後、冷却し、前記複数の第1導電性部材の一部をそれぞれ前記封止体の表面から突出させ、前記封止体から前記複数の第1導電性部材の一部を引き離すことを特徴とする半導体装置の製造方法。 - 請求項2において、
前記複数の第1導電性部材は、バンプ電極であることを特徴とする半導体装置の製造方法。 - 請求項3において、
前記複数の第1導電性部材は、半田材からなることを特徴とする半導体装置の製造方法。 - 請求項4において、
前記(g)工程では、前記熱処理を施す際に、前記複数の第2ランドの表面に、複数の半田ボールをそれぞれ接合することを特徴とする半導体装置の製造方法。 - 請求項5において、さらに以下の工程を含むことを特徴とする半導体装置の製造方法:
(h)前記(g)工程の後、主面、前記主面に形成された複数の端子、前記主面とは反対側の裏面、および前記裏面に形成され、前記複数の端子とそれぞれ電気的に接続される複数の第3ランドを有する第2配線基板を前記封止体上に搭載し、前記複数の第1導電性部材と、前記複数の第3ランドをそれぞれ電気的に接続する工程。 - 請求項6において、
前記第2配線基板の前記主面上には、前記複数の端子と電気的に接続される第2半導体チップが搭載されていることを特徴とする半導体装置の製造方法。 - 請求項2において、
前記第1導電性部材は、ボール状電極であることを特徴とする半導体装置の製造方法。 - 請求項8において、
前記第1導電性部材は、半田材からなることを特徴とする半導体装置の製造方法。
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