JP2012054264A - 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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- JP2012054264A JP2012054264A JP2010193161A JP2010193161A JP2012054264A JP 2012054264 A JP2012054264 A JP 2012054264A JP 2010193161 A JP2010193161 A JP 2010193161A JP 2010193161 A JP2010193161 A JP 2010193161A JP 2012054264 A JP2012054264 A JP 2012054264A
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- chip mounting
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Abstract
【解決手段】配線基板40が有するチップ搭載領域20a上に、半導体チップを、接着材を介して搭載するダイボンディング工程を有している。配線基板40は、コア層の上面に形成された複数の配線(第1配線)23a、ダミー配線(第2配線)23dを有している。また、チップ搭載領域20aは、複数の配線23a、ダミー配線23d上に配置される。また、ダイボンディング工程には、チップ搭載領域20a上の接着材配置領域上に接着材を配置する工程が含まれる。そして、複数のダミー配線23dのそれぞれは、ダイボンディング工程において、接着材が広がる方向に沿って延在している。
【選択図】図8
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。
図1は、本実施の形態の半導体装置を組み込んだ撮像システムの動作を模式的に示す説明図である。
次に、図1に示す半導体装置2の構成について、図1〜図4を用いて説明する。本実施の形態は、BGA(Ball Grid Array)型の半導体装置に適用したものであり、図2はこのBGAの上面側の内部構造を示す平面図、図3は図2のA−A線に沿った断面図である。また、図4は、図1に示す半導体チップおよび上面側の絶縁膜(ソルダレジスト膜)を取り除きコア層の上面側に形成された配線パターン例を示す平面図である。
次に、本実施の形態における半導体装置2の製造工程について、説明する。本実施の形態における半導体装置2は、図5に示す組立てフローに沿って製造される。図5は図1〜図3に示す半導体装置の組み立てフローを示す説明図である。各工程の詳細については、図6〜図24を用いて、以下に説明する。
まず、図5に示す基材準備工程S1として、図6に示すような配線基板40を準備する。図6は図5に示す基材準備工程で準備する配線基板の全体構造を示す平面図、図7は図6のB部を拡大した拡大平面図である。また、図8は、図7に示す一つのデバイス領域について、上面側の絶縁膜(ソルダレジスト膜)を取り除きコア層の上面側に形成された配線パターン例を示す拡大平面図である。
図5に示す半導体チップ準備工程S2として、図2に示す複数の半導体チップ12を準備する。本工程では、複数のチップ領域を有し、例えば、シリコンからなる半導体ウエハ(図示は省略)を準備する。その後、半導体ウエハのダイシングラインに沿って、ダイシングブレードを走らせて(図示は省略)半導体ウエハを分割し、図2に示す半導体チップ12を複数個取得する(ウエハダイシング工程)。具体的には、複数のチップ領域に、図2に示すAFEチップ12aが有する回路等がそれぞれ形成された半導体ウエハと、複数のチップ領域に、図2に示すVDRチップ12bが有する回路等がそれぞれ形成された半導体ウエハを準備する。そして各半導体ウエハをそれぞれ個片化して、複数のAFEチップ12aおよび複数のVDRチップ12bを取得する。本実施の形態では、例えば、このウエハダイシング工程において、幅の異なる複数種類(例えば2種類)のダイシングブレードを用いて複数回(例えば2回)のステップで半導体ウエハを切断する(ステップダイシング方式)。具体的には、まず、第1の幅を有するダイシングブレードにより半導体ウエハの途中まで切削する(第1のステップ)。その後、第1の幅よりも狭い第2の幅を有するダイシングブレードを用いて第1のステップで残った残部を切削して、複数の半導体チップ12に分割する。このようなステップダイシング方式を用いると、図3に示すように、半導体チップ12の表面12c側の周縁部は面取り加工が施される。本実施の形態では、面取り加工の形状は図3に示すように階段状に面取りされた形状となる。換言すれば、半導体チップ12の表面12c側の周縁部に、段差部が形成される。
次に、図5に示すダイボンディング工程S3について説明する。図9は図5に示すダイボンディング工程の第1の接着材配置工程を示す拡大平面図、図10は図9のC−C線に沿った拡大断面図、図11は、図9のD−D線に沿った拡大断面図である。
図32は、図8に示す配線基板に対する第1の比較例である配線基板の上面側の配線パターンを示す拡大平面図、図33は、図8に示す配線基板に対する第2の比較例である配線基板の上面側の配線パターンを示す拡大平面図である。
上記結果から、接着材ペースト11a(図14参照)の配置量を少なくした場合には、単にダミーパターンを形成して絶縁膜26(図14参照)の表面の平坦度を向上させても、ボイドの発生を十分に抑制できないことが判った。そこで、本願発明者は、更に検討を行い、図8に示すように、複数のダミー配線23aのそれぞれを接着材ペースト11a(図14参照)が主に広がる方向に沿って延在させることで、ボイドの発生をほぼ確実に抑制できることを見出した。
次に、図5に示すワイヤボンディング工程S4について説明する。図18は図5に示すワイヤボンディング工程の突起電極形成工程を示す拡大断面図、図19は図18のF部をさらに拡大した拡大断面図である。また、図20は図5に示すワイヤボンディング工程を示す拡大断面図である。
次に、図5に示す封止工程S5について説明する。図21は封止工程で用いる成形金型に配線基板を配置して封止用樹脂を供給した状態を示す拡大断面図である。また、図22は、図21に示すキャビティ内に封止用樹脂で満たした後、封止用樹脂を硬化させた状態を示す拡大断面図である。
次に、図5に示すベーク工程S6について説明する。
次に、図5に示すボールマウント工程S7について説明する。図23は、配線基板に複数の半田ボールを接合した状態を示す拡大断面図である。なお、図23は、図9に示すC−C線に沿った断面に対応している。
次に、図5に示す個片化工程S8について説明する。図24は図23に示す配線基板および封止体を個片化する工程を示す拡大断面図である。
例えば、前記実施の形態では、第1および第2の接着材配置工程として、図11に示すように、吐出口45aが複数に分岐したノズル45を用いてチップ搭載領域20a上(接着材と接着材配置領域11b上)の複数箇所に、接着材ペースト11aを塗布する多点塗布方式について説明した。しかし、接着材ペースト11aの塗布方式はこれに限定されず、例えば図25および図26に示す帯状塗布方式とすることができる。図25は、図9に対する変形例を示す拡大平面図、図26は図11に対する変形例を示す拡大断面図である。
また、前記実施の形態では、チップ搭載領域20b、20cそれぞれの下層に複数のダミー配線23dを配置する例について説明したが、チップ搭載領域20b、20cのうち、いずれか一方の下層に複数のダミー配線23dを形成する構成とすることもできる。この場合、後から半導体チップ12を搭載するチップ搭載領域20bに複数のダミー配線23dを形成することが好ましい。複数のダミー配線23d上に配置されたチップ搭載領域20bに後からAFEチップ12a(半導体チップ12)を搭載することにより、既に搭載されたVDRチップ12b(半導体チップ12)の表面12cに接着材ペースト11aが這い上がることを防止できるからである。
また、前記実施の形態では、複数の半導体チップ12を並べて配置する例について説明したが、配線基板40上に一つの半導体チップ12を搭載する実施態様に適用することもできる。この場合、半導体チップ12の厚さが薄くなれば、接着材ペースト11aが表面12c側に這い上がる虞があるが、前記実施の形態で説明したダイボンディング工程のうち、一方の半導体チップ12を搭載する工程を適用することで、これを防止ないしは抑制することができる。
また、前記実施の形態では、長方形の平面形状から成る半導体チップ12を搭載する例について説明したが、図27に示すように正方形の平面形状から成る半導体チップ80を搭載する半導体装置81に適用することもできる。図27は、図2に対する変形例を示す平面図である。また、図28は、図27に示す半導体装置の製造方法において、ダイボンディング工程の接着材配置工程を示す拡大平面図、図29は図28に示すチップ搭載領域の下層に形成されたダミー配線の配置例を模式的に示す説明図である。
また、前記変形例4では、半導体チップ80を、所謂、フェイスアップ実装方式により搭載する実施態様について説明したが、図30および図31に示すように、半導体チップ80をフェイスダウン実装方式で搭載する半導体装置82に適用することもできる。図30は、図27に対する変形例を示す平面図である。また、図31は図30のG−G線に沿った断面図である。
2、81、82 半導体装置
3 画像処理LSI(半導体装置)
11 接着材
11a 接着材ペースト
11b 接着材配置領域
12、80 半導体チップ
12a AFEチップ
12b VDRチップ
12c 表面(上面、主面)
12d 裏面(下面、主面)
12e 側面
12f 絶縁膜(パッシベーション膜)
13、13a、13b ワイヤ(導電性部材)
14 封止体
14a 封止用樹脂
20 配線基板
20a、20b、20c チップ搭載領域
21 コア層
21a 上面(表面)
21b 下面(裏面)
22 端子(ボンディングリード)
23 配線パターン
23a、23b 配線
23c ビア配線(配線)
23d ダミー配線(配線)
23e 給電線
23f ダミーパターン
24 ランド
25 ビア
26 絶縁膜
26a 開口部
26b 溝部(ダム部)
27 絶縁膜
27a 開口部
28 半田材
31、31a、31b、31d、31e パッド(電極パッド)
32 スタッドバンプ
33 ワイヤ
34 バンプ電極
35 半田材
40、90、91 配線基板
40a デバイス領域
40b 枠体(枠部)
45 ノズル
45a 吐出口
50 ダイシングブレード
51 樹脂フィルム(ダイシングテープ)
60 保持治具
61 キャピラリ
71 成形金型
72 上金型
72a 下面
72b キャビティ
73 下金型
73a 上面
ADC A/D変換回路
CDS ノイズ低減回路
HDR 水平ドライバ
PGA 増幅回路
TG タイミングジェネレータ
VDR 垂直ドライバ
Claims (14)
- 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)上面および前記上面とは反対側の下面を有するコア層と、前記コア層の前記上面に形成された複数の第1および第2配線と、前記コア層の前記上面に形成され、かつ前記複数の第1配線と電気的に接続された複数のボンディングリードと、前記複数の第1および第2配線を覆い、かつ前記複数のボンディングリードを露出するように、前記コア層の前記上面に形成された上面側絶縁膜と、前記コア層の前記下面に形成され、かつ前記複数のボンディングリードとそれぞれ電気的に接続された複数のランドと、前記複数のランドを露出するように、前記コア層の前記下面に形成された下面側絶縁膜と、を備えた配線基板を準備する工程;
(b)前記コア層の前記上面上に設けられ、かつ、平面形状が長方形から成る第1チップ搭載領域における第1接着材配置領域に、流動性を有する第1接着材を配置する工程;
(c)平面形状が長方形から成り、第1表面、前記第1表面に形成された複数の第1電極パッド、前記第1表面とは反対側の第1裏面を有する第1半導体チップを、前記第1接着材を介して前記配線基板の前記第1チップ搭載領域上に搭載し、前記第1接着材配置領域の周囲に前記第1接着材を広げる工程;
ここで、
前記第1チップ搭載領域は、前記複数の第1および第2配線を有しており、
前記(b)工程では、前記第1チップ搭載領域において、互いに対向する2つの短辺のそれぞれの中央を結ぶ第1中央線上に配置され、かつ、前記第1中央線に沿って延びる前記第1接着材配置領域に前記第1接着材を配置し、
前記複数の第2配線のそれぞれは、前記(c)工程において、前記第1接着材が広がる方向に沿って延在している。 - 請求項1において、
前記複数の第2配線のそれぞれは、前記複数の第1配線および前記複数のボンディングリードとは、接続されていない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2配線のそれぞれは、前記第1チップ搭載領域の前記短辺に沿って延在してい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2配線それぞれの厚さは、前記複数の第1配線それぞれの厚さと同じであ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、
前記配線基板は、前記コア層の前記上面で、かつ、前記第1チップ搭載領域の下層に、前記第2配線を形成する第2配線配置領域と、前記第2配線を形成しない第2配線非配置領域と、を有し、
前記第2配線配置領域の隣り合う前記複数の第1配線間の距離は、前記第2配線非配置領域の隣り合う前記複数の第1配線間の距離よりも広い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、
前記複数の第2配線それぞれの延在方向の延長線上には別の前記第2配線は隣り合って配置されていないことを特徴とする半導体装置の製造方法。 - 請求項1において、
前記複数の第2配線の一部は、屈曲部を有していることを特徴とする半導体装置の製造方法。 - 請求項1において、
前記複数の第2配線の一部は、それぞれ前記第1チップ搭載領域の前記短辺に向かって延在していることを特徴とする半導体装置の製造方法。 - 請求項1において、
前記複数の第2配線は、平面視において、前記第1チップ搭載領域内に配置され、前記第1チップ搭載領域の外側までは延在していないことを特徴とする半導体装置の製造方法。 - 請求項1において、
前記(c)工程では、
前記第1半導体チップの前記第1裏面と前記配線基板の前記第1チップ搭載領域が対向するように前記第1半導体チップを搭載することを特徴とする半導体装置の製造方法。 - 請求項1において、
前記(b)工程では、前記第1接着材配置領域の複数箇所に前記第1接着材を配置することを特徴とする半導体装置の製造方法。 - 請求項1において、
前記(a)工程で準備する前記配線基板は、平面形状が長方形から成り、かつ、前記コア層の前記上面側に配置される第2チップ搭載領域を有し、
前記第2チップ搭載領域の有する四辺のうちの一つの長辺は、前記第1チップ搭載領域の有する四辺のうちの一つの長辺と対向するように並べて配置され、
さらに、
(d)前記第2チップ搭載領域上に第2接着材を配置する工程と、
(e)平面形状が長方形から成り、第2表面、前記第2表面に形成された複数の第2電極パッド、前記第2表面とは反対側の第2裏面を有する第2半導体チップを、前記第2接着材を介して前記配線基板の前記第2チップ搭載領域上に搭載する工程と、
を有し、
前記(c)工程は、前記(e)工程の後で行うことを特徴とする半導体装置の製造方法。 - 請求項12において、
前記(a)工程で準備する前記配線基板は、前記第2チップ搭載領域の下層に、前記複数の第1および第2配線が形成され、
前記(d)工程では、前記第2チップ搭載領域の有する四辺のうち、対向する短辺それぞれの中央を結ぶ第2中央線上に配置され、かつ、前記第2中央線に沿って延びる第2接着材配置領域に前記第2接着材を配置し、
前記(e)工程は、前記(d)工程で配置した前記第2接着材を、前記第2接着材配置領域の周囲に広げる工程を含み、
前記第2チップ搭載領域の下層に配置された前記複数の第2配線のそれぞれは、前記(e)工程において、前記第1接着材が広がる方向に沿って延在している。 - 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)上面および前記上面とは反対側の下面を有するコア層と、前記コア層の前記上面に形成された複数の第1および第2配線と、前記コア層の前記上面に形成され、かつ前記複数の第1配線と電気的に接続された複数のボンディングリードと、前記複数の第1および第2配線を覆い、かつ前記複数のボンディングリードを露出するように、前記コア層の前記上面に形成された上面側絶縁膜と、前記コア層の前記下面に形成され、かつ前記複数のボンディングリードとそれぞれ電気的に接続された複数のランドと、前記複数のランドを露出するように、前記コア層の前記下面に形成された下面側絶縁膜と、を備えた配線基板を準備する工程;
(b)前記コア層の前記上面側に設けられ、かつ、平面形状が四角形から成るチップ搭載領域内の接着材配置領域に、流動性を有する接着材を配置する工程;
(c)平面形状が四角形から成り、表面、前記表面に形成された複数の電極パッド、前記表面とは反対側の裏面を有する半導体チップを、前記接着材を介して前記配線基板の前記チップ搭載領域上に搭載し、前記接着材配置領域の周囲に前記接着材を広げる工程;
ここで、
前記チップ搭載領域は、前記複数の第1および第2配線を有しており、
前記複数の第2配線のそれぞれは、前記チップ搭載領域の有する四辺のうち、前記接着材配置領域から最も近い辺に向かって延在していることを特徴とする半導体装置の製造方法。
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KR100985084B1 (ko) * | 2005-10-06 | 2010-10-04 | 후지쯔 세미컨덕터 가부시키가이샤 | 반도체 장치의 제조 방법 |
JP2008218848A (ja) | 2007-03-07 | 2008-09-18 | Renesas Technology Corp | 半導体装置および半導体装置の製造方法 |
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- 2011-08-30 KR KR1020110087423A patent/KR101811063B1/ko active IP Right Grant
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JP2003092374A (ja) * | 2001-09-18 | 2003-03-28 | Hitachi Ltd | 半導体装置およびその製造方法 |
JP2004259755A (ja) * | 2003-02-24 | 2004-09-16 | Renesas Technology Corp | 半導体装置の製造方法 |
JP2005223156A (ja) * | 2004-02-05 | 2005-08-18 | Oki Electric Ind Co Ltd | ダイスボンド装置及びダイスボンド方法 |
JP2006032872A (ja) * | 2004-07-22 | 2006-02-02 | Sony Corp | 回路基板及び半導体装置 |
JP2006041019A (ja) * | 2004-07-23 | 2006-02-09 | Sanyo Electric Co Ltd | 回路装置およびその製造方法 |
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JP2014187343A (ja) * | 2013-02-22 | 2014-10-02 | Renesas Electronics Corp | 半導体チップ及び半導体装置 |
JP6029756B2 (ja) * | 2013-07-10 | 2016-11-24 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
WO2020230404A1 (ja) * | 2019-05-15 | 2020-11-19 | ソニーセミコンダクタソリューションズ株式会社 | 半導体パッケージ、半導体パッケージの製造方法、および、電子装置 |
JP7462620B2 (ja) | 2019-05-15 | 2024-04-05 | ソニーセミコンダクタソリューションズ株式会社 | 半導体パッケージ、半導体パッケージの製造方法、および、電子装置 |
Also Published As
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US8574963B2 (en) | 2013-11-05 |
CN102386112A (zh) | 2012-03-21 |
TWI525719B (zh) | 2016-03-11 |
JP5503466B2 (ja) | 2014-05-28 |
TW201209941A (en) | 2012-03-01 |
US20120052628A1 (en) | 2012-03-01 |
KR20120021278A (ko) | 2012-03-08 |
KR101811063B1 (ko) | 2017-12-20 |
CN102386112B (zh) | 2015-12-16 |
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