JP5467959B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP5467959B2 JP5467959B2 JP2010163671A JP2010163671A JP5467959B2 JP 5467959 B2 JP5467959 B2 JP 5467959B2 JP 2010163671 A JP2010163671 A JP 2010163671A JP 2010163671 A JP2010163671 A JP 2010163671A JP 5467959 B2 JP5467959 B2 JP 5467959B2
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- JP
- Japan
- Prior art keywords
- wire
- chip
- wires
- bonding
- wiring board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010931 gold Substances 0.000 claims description 8
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H01L2924/181—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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Description
前記複数のボンディングリードは、平面視において前記配線基板の上面の第1基板辺に沿って配置された複数の1列目ボンディングリードと、平面視において前記配線基板の前記上面の前記第1基板辺に沿って配置され、かつ前記複数の1列目ボンディングリードと前記第1基板辺との間に配置された複数の2列目ボンディングリードとを有しており、
前記複数のボンディングパッドは、平面視において前記チップの前記表面の第1チップ辺に沿って配置された複数の1列目ボンディングパッドと、平面視において前記チップの前記表面の前記第1チップ辺に沿って配置され、かつ前記複数の1列目ボンディングパッドよりも前記表面の中央部側に配置された複数の2列目ボンディングパッドとを有しており、
前記複数の2列目ボンディングパッドと前記複数の2列目ボンディングリードとをそれぞれ電気的に接続する前記複数の第2ワイヤのうち、前記チップの前記表面における角部に配置されたボンディングパッドに接続された角部用ワイヤの径は、前記複数の第1ワイヤ、および前記複数の第2ワイヤのうちの前記角部用ワイヤ以外のワイヤのそれぞれの径よりも太い。
<半導体装置>
図1は、本実施の形態1の半導体装置の内部構造を示す平面図、図2は、図1のA−A線に沿った断面図、図3は、図1のB−B線に沿った断面図、図4は、図1に示す半導体装置の裏面を示す平面図である。なお、図1には、封止樹脂の図示が省略されている。
図5は、配線基板1の上面を示す平面図、図6は、図5の一部(1個のボンディングリード2およびその近傍の領域)を示す拡大平面図、図7は、配線基板1の一部を示す拡大断面図、図8は、配線基板1の下面を示す平面図である。
図9は、上記配線基板1に搭載されるチップ3の表面を示す平面図、図10は、チップ3の一部の拡大断面図である。
次に、配線基板1のボンディングリード2とチップ3のボンディングパッド4を電気的に接続するワイヤ6について説明する。
次に、上記のような構成を有する本実施の形態1の半導体装置(BGA)の製造方法について説明する。図11は、半導体装置(BGA)の製造方法の一例を工程順に示すフロー図である。
図12は、半導体装置の製造に用いる大型配線基板の上面(チップ搭載面)を示す平面図、図13は、この大型配線基板の下面を示す平面図である。
半導体装置(BGA)を製造するには、まず、図15に示すように、大型配線基板20の上面に設けられた各デバイス領域22のチップ搭載領域14に接着剤5を供給した後、図16(大型配線基板20の一部を拡大して示す平面図)に示すように、各デバイス領域22の中央部(接着剤5が供給されたチップ搭載領域14)にチップ3を搭載する。チップ3の搭載は、チップ3の裏面を大型配線基板20の上面と対向させるフェイスアップ実装方式によって行う。その後、大型配線基板20を加熱し、接着剤5を硬化させることによって、各チップ3を大型配線基板20の上面に固定する。
次に、図17(大型配線基板20のデバイス領域22を拡大して示す平面図)および図18(図17のC−C線断面図)に示すように、大型配線基板20の各デバイス領域22に搭載されたチップ3の1列目のボンディングパッド4と、各デバイス領域22に形成された1列目のボンディングリード2を低ループのワイヤ6によって電気的に接続する。このワイヤ6のボンディングは、熱と超音波を利用した周知のボールボンディング法によって行い、かつボンディングパッド4側を第1ボンディングとし、ボンディングリード2側を第2ボンディングとする正ボンディング方式を採用する。すなわち、最初にワイヤ6の先端部にボール部を形成し、このボール部をボンディングパッド4に接続した後、ワイヤ6の他端をボンディングリード2に接続する。このとき使用するワイヤ6の直径は、例えば18μmである。
次に、上記ワイヤボンディング工程が完了した大型配線基板20を図23および図24に示す成形金型40に装着する。図23は、本実施の形態1で使用する成形金型40およびこの成形金型40に装着された大型配線基板20を示す平面図、図24は、図23のF−F線に沿った断面図である。
次に、図27に示すように、大型配線基板20の下面に形成された複数のランド16のそれぞれに半田ボール7を接続する。
次に、図28に示すように、ダイシングブレード23を用いて大型配線基板20およびその上面全体を覆う封止樹脂8を切断(ダイシング)、個片化する。大型配線基板20および封止樹脂8の切断は、図12および図13に示したダイシングラインDLに沿って行う。ここまでの工程により、前記図1〜図4に示した本実施の形態1の半導体装置(BGA)が完成する。
前記実施の形態1では、配線基板1のボンディングパッド4とチップ3のボンディングパッド4を接続する複数のワイヤ6、6bのうち、ワイヤ長が最も長いワイヤ(角部用ワイヤ)6bの径を他のワイヤ6の径より太くすることにより、隣接ワイヤ6、6b間のショートを抑制した。これに対し、本実施の形態2では、径の細いワイヤ6のみを使用し、ワイヤボンディング方法を変更することによって、隣接ワイヤ6、6間のショートを抑制する。なお、本実施の形態2で使用するワイヤ6の材料は、前記実施の形態1と同じく金である。また、ワイヤ6の直径は、例えば18μmである。以下、図29〜図33を参照しながら、本実施の形態2のワイヤボンディング方法について説明する。
前記実施の形態1では、大型配線基板20の上面に搭載された全てのチップ3において、チップ3のコーナー部(角部)に最も近い位置(チップ3の各辺の両端部)に配置された高ループのワイヤ(角部用ワイヤ)6bの径を、その他のワイヤ6の径よりも太くしたが、本発明は、これに限定されるものではない。
2 ボンディングリード(電極パッド)
2L 配線
3 半導体チップ
3P シリコン基板
3W 半導体ウエハ
4 ボンディングパッド(電極パッド)
5 接着剤
6、6b ワイヤ(ボンディングワイヤ)
7 半田ボール
8 封止樹脂
9 突起電極
10 キャピラリ
12 絶縁層
13 ソルダレジスト
14 チップ搭載領域
15 ビアホール
16 ランド
20 大型配線基板
21 枠部
22 デバイス領域
23 ダイシングブレード
30 表面保護膜
31 p型ウエル
32 素子分離溝
33 第1層Al配線
34 第2層Al配線
35 第3層Al配線
36、37、38 層間絶縁膜
39 開口
40 成形金型
41 上型
42 下型
43 ゲート
44 エアベント
45 キャビティ
50 配線基板
51 半導体チップ
52 ボンディングリード
53 ボンディングパッド
54、54h、54m ワイヤ
55 モールド金型
56 ゲート
57 キャビティ
58 封止樹脂
DL ダイシングライン
Qn nチャネル型MOSFET
Claims (5)
- 平面形状が四辺形からなる上面、前記上面に形成された複数のボンディングリード、前記上面とは反対側の下面、および前記下面に形成された複数のランドを有する配線基板と、
平面形状が四辺形からなる表面、前記表面に形成された複数のボンディングパッド、および前記表面とは反対側の裏面を有し、前記配線基板の前記上面に搭載された半導体チップと、
前記複数のボンディングパッドと前記複数のボンディングリードとをそれぞれ電気的に接続する複数のワイヤと、
前記半導体チップおよび前記複数のワイヤを封止する封止体と、を含み、
前記複数のボンディングリードは、平面視において前記配線基板の前記上面の第1基板辺に沿って配置された複数の1列目ボンディングリードと、平面視において前記配線基板の前記上面の前記第1基板辺に沿って配置され、かつ前記複数の1列目ボンディングリードと前記第1基板辺との間に配置された複数の2列目ボンディングリードとを有しており、
前記複数のボンディングパッドは、平面視において前記半導体チップの前記表面の第1チップ辺に沿って配置された複数の1列目ボンディングパッドと、平面視において前記半導体チップの前記表面の前記第1チップ辺に沿って配置され、かつ前記複数の1列目ボンディングパッドよりも前記表面の中央部側に配置された複数の2列目ボンディングパッドとを有しており、
前記半導体チップは、前記半導体チップの前記第1チップ辺が前記配線基板の前記第1基板辺と隣り合って並ぶように、前記配線基板の前記上面に搭載され、
前記複数のワイヤは、前記複数の1列目ボンディングパッドと前記複数の1列目ボンディングリードとをそれぞれ電気的に接続する複数の第1ワイヤと、前記複数の2列目ボンディングパッドと前記複数の2列目ボンディングリードとをそれぞれ電気的に接続する複数の第2ワイヤとを有しており、
前記複数の第2ワイヤは、前記複数の第1ワイヤよりも前記配線基板の前記上面から遠い部分を有しており、
前記複数の第2ワイヤのうち、前記半導体チップの前記第1チップ辺の両端部に配置されたボンディングパッドに接続された端部用ワイヤの径は、前記複数の第1ワイヤ、および前記複数の第2ワイヤのうちの前記端部用ワイヤ以外のワイヤのそれぞれの径よりも太いことを特徴とする半導体装置。 - 前記端部用ワイヤの長さは、前記複数の第1ワイヤ、および前記複数の第2ワイヤのうちの前記端部用ワイヤ以外のワイヤの長さよりも長いことを特徴とする請求項1に記載の半導体装置。
- 前記ワイヤは、金からなることを特徴とする請求項1または2に記載の半導体装置。
- 前記半導体チップの前記表面に形成された前記複数の1列目ボンディングパッドと、前記複数の2列目ボンディングパッドは、平面視において、前記半導体チップの前記第1チップ辺に沿って千鳥状に配置されていることを特徴とする請求項1、2または3に記載の半導体装置。
- 前記配線基板の前記下面に形成された前記複数のランドのそれぞれには、外部接続端子を構成するボール電極が電気的に接続されていることを特徴とする請求項1、2、3または4に記載の半導体装置。
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CN102270619B (zh) * | 2010-06-04 | 2014-03-19 | 马维尔国际贸易有限公司 | 用于电子封装组件的焊盘配置 |
JP6025016B2 (ja) * | 2012-02-28 | 2016-11-16 | カシオ計算機株式会社 | 半導体装置及びその製造方法 |
JP2013207363A (ja) * | 2012-03-27 | 2013-10-07 | Seiko Epson Corp | 回路装置、発振装置及び電子機器 |
JP5952074B2 (ja) * | 2012-04-27 | 2016-07-13 | ラピスセミコンダクタ株式会社 | 半導体装置及び計測機器 |
JP5968713B2 (ja) * | 2012-07-30 | 2016-08-10 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP2014082468A (ja) * | 2012-09-25 | 2014-05-08 | Canon Components Inc | 基板部材及びチップの製造方法 |
JP6354467B2 (ja) * | 2014-09-01 | 2018-07-11 | 株式会社デンソー | 半導体装置 |
JP2017183511A (ja) * | 2016-03-30 | 2017-10-05 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP2018107296A (ja) | 2016-12-27 | 2018-07-05 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
JP6815880B2 (ja) * | 2017-01-25 | 2021-01-20 | 株式会社ディスコ | 半導体パッケージの製造方法 |
JP2018186197A (ja) * | 2017-04-26 | 2018-11-22 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
CN109841590B (zh) * | 2017-11-28 | 2024-11-15 | 恩智浦美国有限公司 | 用于具有j引线和鸥翼引线的集成电路装置的引线框 |
US10515880B2 (en) * | 2018-03-16 | 2019-12-24 | Nxp Usa, Inc | Lead frame with bendable leads |
WO2020248212A1 (zh) * | 2019-06-14 | 2020-12-17 | 深圳市汇顶科技股份有限公司 | 芯片封装结构和电子设备 |
US20230217591A1 (en) * | 2022-01-03 | 2023-07-06 | Mediatek Inc. | Board-level pad pattern for multi-row qfn packages |
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US20120018859A1 (en) | 2012-01-26 |
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US8710637B2 (en) | 2014-04-29 |
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