JP5514134B2 - 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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- JP5514134B2 JP5514134B2 JP2011028504A JP2011028504A JP5514134B2 JP 5514134 B2 JP5514134 B2 JP 5514134B2 JP 2011028504 A JP2011028504 A JP 2011028504A JP 2011028504 A JP2011028504 A JP 2011028504A JP 5514134 B2 JP5514134 B2 JP 5514134B2
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- semiconductor chip
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- semiconductor device
- die pad
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Description
先ず、本願において開示される発明の代表的な実施の形態について概要を説明する。
(a)複数の接続リード、ダイパッド、および前記ダイパッドよりも厚さが厚く、前記ダイパッドを支持する複数のダイパッドサポートリードを含み、平面形状が長方形からなる複数の単位デバイス領域を有するリードフレームを準備する工程;
(b)複数のボンディングパッドを有する第1の半導体チップを前記複数の単位デバイス領域のそれぞれに配置する工程;
(c)前記長方形の長辺に沿って前記第1の半導体チップと並ぶように、複数のボンディングパッドを有する第2の半導体チップを前記複数の単位デバイス領域のそれぞれの前記ダイパッドの表面上に配置する工程;
(d)前記複数の単位デバイス領域のそれぞれにおいて、前記第1の半導体チップの複数のボンディングパッドのうちの第1のボンディングパッド群と、前記第2の半導体チップの複数のボンディングパッドのうちの第1のボンディングパッド群とを、第1のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(e)前記第1の半導体チップの前記複数のボンディングパッドのうちの第2のボンディングパッド群と、前記複数の接続リードのうちの第1の接続リード群とを、第2のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(f)前記第2の半導体チップの前記複数のボンディングパッドのうちの第2のボンディングパッド群と、前記複数の接続リードのうちの第2の接続リード群とを、第3のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(g)前記工程(d)、(e)および(f)の後、前記複数の単位デバイス領域を、封止樹脂を用いて封止することにより、樹脂封止体を形成する工程、
ここで、前記複数の単位デバイス領域のそれぞれにおいて、前記複数のダイパッドサポートリードは、互いに対向する一対の長辺のうちの一方と他方との間を連結しており、
前記工程(g)における前記封止樹脂は、前記一対の長辺のうちの前記一方側から前記他方側に向かって供給される。
(h)前記工程(g)の後、前記リードフレーム裏面テープを剥離する工程;
(i)前記工程(h)の後、前記樹脂封止体を個々の単位デバイス領域に対応する部分に分離する工程。
(a)(x1)複数の接続リード、(x2)ダイパッド、および(x3)前記ダイパッドよりも厚さが厚く、前記ダイパッドを支持する複数のダイパッドサポートリードを含み、長方形を呈する複数の単位デバイス領域を有するリードフレームを準備する工程;
(b)第1の半導体チップを各単位デバイス領域内にダイボンディングする工程;
(c)前記第1の半導体チップとともに前記長方形の長辺方向に並ぶように、第2の半導体チップを各単位デバイス領域内の前記ダイパッドの表面上にダイボンディングする工程;
(d)各単位デバイス領域内において、前記第1の半導体チップおよび前記第2の半導体チップ上の複数のボンディングパッドのうち、対向する辺に沿って配置された第1のボンディングパッド群同士をボンディングワイヤによって接続することによって、前記第1の半導体チップおよび前記第2の半導体チップ間を相互接続する工程;
(e)前記第1の半導体チップ上の前記複数のボンディングパッドのうちの第2のボンディングパッド群と、前記複数の接続リードのうちの第1の接続リード群間をボンディングワイヤによって接続する工程;
(f)前記第2の半導体チップ上の前記複数のボンディングパッドのうちの第3のボンディングパッド群と、前記複数の接続リードのうちの第2の接続リード群間をボンディングワイヤによって接続する工程;
(g)前記工程(d)、(e)および(f)の後、各単位デバイス領域を、封止樹脂を用いてトランスファモールドすることにより、樹脂封止体を形成する工程、
ここで、前記複数のダイパッドサポートリードは、それぞれ前記長方形の一対の長辺間を連結しており、前記工程(g)における前記封止樹脂は、前記一対の長辺のうちの一方の長辺側から導入される。
(h)前記工程(g)の後、前記リードフレーム裏面テープを剥離する工程;
(i)前記工程(h)の後、前記樹脂封止体を個々の単位デバイス領域に対応する部分に分離する工程。
1.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に分けて記載する場合もあるが、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、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。
実施の形態について更に詳述する。各図中において、同一または同様の部分は同一または類似の記号または参照番号で示し、説明は原則として繰り返さない。
本願で主に説明するパッケージは、薄型パッケージであり、特にその厚さが、たとえば0.5ミリメートル以下のもの(主範囲としては、0.5ミリメートル以下、0.2ミリメートル以上)を主要な対象としているが、本願発明はそれに限定されるものではなく、これ以外の厚さのものにも適用できることはいうまでもない。
図9は本願の前記一実施の形態の半導体装置の製造方法に使用されるリードフレームの概要形状を示すリードフレーム全体平面図である。図10は図9のリードフレームの単位デバイス領域4個分及びその周辺領域R5の詳細形状を示すリードフレーム部分拡大平面図である。図11は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分(リードフレームの単位デバイス領域2個分、以下同じ)のデバイス断面図(リードフレーム準備工程)である。図12は図11のダイパッド周辺領域R6の拡大断面図である。図13は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(リードフレーム裏面テープ貼り付け工程)である。図14は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(第1の半導体チップダイボンディング工程)である。図15は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(第2の半導体チップダイボンディング工程)である。図16は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(ワイヤボンディング工程)である。図17は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図9に対応する下金型上のリードフレーム全体上面図(トランスファモールド工程)である。図18は図17のY−Y’断面に対応するモールド金型およびリードフレーム全体模式断面図である。図19は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図9に対応する下金型上のリードフレーム全体上面図(モールド後のリードフレーム取り出し工程)である。図20は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図19に対応する部分のデバイス断面図(モールド後のリードフレーム取り出し工程)である。図21は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(リードフレーム裏面テープ剥離工程)である。図22は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(ダイシングテープ貼り付け工程)である。図23は本願の前記一実施の形態の半導体装置の製造方法におけるプロセス途中の図2に対応する部分のデバイス断面図(ダイシング工程)である。これらに基づいて、本願の前記一実施の形態の半導体装置の製造方法における製造プロセスを説明する。
このセクションでは、セクション1に示した図1の平面レイアウトの変形例を説明する。製造プロセスについては、セクション2に説明したところと、ほぼ同様に実行することができる。
この例では、図1の例と異なり、一対の半導体チップ2x、2yの両方が、ダイパッド4d上に、ダイボンディングされている。なお、図1の例と同様に、複数のチップをパッケージの長手方向(長辺の延びる方向)に並べて平置きしている(チップ同士の積層ではなく)。しかし、全体としての積層チップの厚さが他の単一のチップの厚さと同程度であれば、収容される複数のチップの一部又は全部が積層チップであることを排除するものではない。
この例では、図1の例と異なり、接続リード4iが長方形のパッケージの一対の長辺のみに配列されている、所謂、SON(Small Outline Non−lead)型のパッケージ(半導体装置)であってもよい。
この例では、図24の例と異なり、接続リード4iが長方形のパッケージの一対の長辺のみに配列されている(図25に類似)。また、この例では、比較的広くなったダイパッド4dとダイパッドサポートリード4s(タブ吊りリード)が構成する枠体の占める面積がパッケージのほとんどの部分を占有するため、長方形パッケージにおいて発生しやすいパッケージの反りを大幅に低減することができる。
このセクションでは、本願発明、先の実施の形態、変形例等に関する一般的な考察並びに補足的説明を行う。
以上本発明者によってなされた発明を実施形態に基づいて具体的に説明したが、本願発明はそれに限定されるものではなく、その要旨を逸脱しない範囲において種々変更可能であることは言うまでもない。
1a パッケージの上面
1b パッケージの下面
1s パッケージの側面
2a チップの上面(デバイス面)
2x 直接取り付け半導体チップ(化合物半導体チップまたは第1の半導体チップ)
2y ダイパッド上取り付け半導体チップ(シリコン系半導体チップまたは第2の半導体チップ)
3 リードフレームの単位デバイス領域
4 リードフレーム
4d ダイパッド(チップ搭載部)
4f 枠部
4i 接続リード(インナリード)
4ig1 第1の接続リード群
4ig2 第2の接続リード群
4m 単位デバイス領域マトリクス部
4s ダイパッドサポートリード(タブ吊りリード)
4t タイバー
5 樹脂封止体(封止レジン)
5a 樹脂封止体上面
5b 樹脂封止体下面
5m 溶融レジン(樹脂)
6 ボンディングワイヤ(ボンディングワイヤ群)
6a1 ボンディングワイヤ群
6a2 ボンディングワイヤ群
6a3 ボンディングワイヤ群
6b ボンディングボール部(第1ボンディング点)
6w ウエッジボンディング部(第2ボンディング点)
7x 接着剤層または第1の接着剤層(エポキシ系ペースト層)
7y 接着剤層(エポキシ系ペースト層)
8 ボンディングメタル膜(銀膜)
9 ボンディングパッド
9a アルミニウム系ボンディングパッド
9b 金系ボンディングパッド
9g1 第1のボンディングパッド群
9g2 第2のボンディングパッド群
9g3 第3のボンディングパッド群
10 リセス領域
11 スタッドバンプ(下地バンプ)
12 ファイナルパッシベーション膜
14 リードフレーム裏面テープ(ポリイミド系粘着テープ)
15 モールド金型
15a 上金型
15b 下金型
16 ポット部
17 ランナ及びゲート部
18 レジンタブレット
19 カル部
20 モールドキャビティ
21 離型フィルム
22 プランジャ
23 エアベント
24 封止樹脂の流れ方向
31 ダイシングテープ
32 回転ブレード(ダイシングブレード)
33 ダイシング溝
R1 リード上ウエッジボンディング部周辺領域
R2 チップ上ボールボンディング部周辺領域
R3 チップ上ウエッジボンディング部周辺領域
R4 リード上ボールボンディング部周辺領域
R5 単位デバイス領域4個分及びその周辺領域
R6 ダイパッド周辺領域
Claims (20)
- 以下の工程を含む半導体装置の製造方法:
(a)複数の接続リード、ダイパッド、および前記ダイパッドよりも厚さが厚く、前記ダイパッドを支持する複数のダイパッドサポートリードを含み、平面形状が長方形からなる複数の単位デバイス領域を有するリードフレームを準備する工程;
(b)複数のボンディングパッドを有する第1の半導体チップを前記複数の単位デバイス領域のそれぞれに配置する工程;
(c)前記長方形の長辺に沿って前記第1の半導体チップと並ぶように、複数のボンディングパッドを有する第2の半導体チップを前記複数の単位デバイス領域のそれぞれの前記ダイパッドの表面上に配置する工程;
(d)前記複数の単位デバイス領域のそれぞれにおいて、前記第1の半導体チップの複数のボンディングパッドのうちの第1のボンディングパッド群と、前記第2の半導体チップの複数のボンディングパッドのうちの第1のボンディングパッド群とを、第1のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(e)前記第1の半導体チップの前記複数のボンディングパッドのうちの第2のボンディングパッド群と、前記複数の接続リードのうちの第1の接続リード群とを、第2のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(f)前記第2の半導体チップの前記複数のボンディングパッドのうちの第2のボンディングパッド群と、前記複数の接続リードのうちの第2の接続リード群とを、第3のボンディングワイヤ群を介してそれぞれ電気的に接続する工程;
(g)前記工程(d)、(e)および(f)の後、前記複数の単位デバイス領域を、封止樹脂を用いて封止することにより、樹脂封止体を形成する工程、
ここで、前記複数の単位デバイス領域のそれぞれにおいて、前記複数のダイパッドサポートリードは、互いに対向する一対の長辺のうちの一方と他方との間を連結しており、
前記工程(g)における前記封止樹脂は、前記一対の長辺のうちの前記一方側から前記他方側に向かって供給される。 - 前記1項の半導体装置の製造方法において、前記ダイパッドの裏面は、前記樹脂封止体から露出している。
- 前記2項の半導体装置の製造方法において、前記複数の接続リードの裏面は、前記樹脂封止体から露出している。
- 前記3項の半導体装置の製造方法において、前記複数の接続リードの厚さは、前記複数のダイパッドサポートリードの厚さとほぼ同じである。
- 前記4項の半導体装置の製造方法において、前記ダイパッドは、その表面側からのエッチングによって薄くされている。
- 前記5項の半導体装置の製造方法において、前記工程(b)は、予め前記第1の半導体チップの裏面に設けられた第1の接着剤層を介して、前記リードフレームの裏面に貼り付けられたリードフレーム裏面テープ上に固定することによって実行される。
- 前記6項の半導体装置の製造方法において、前記第1の接着剤層の前記第1の半導体チップと反対側の面は、前記樹脂封止体から露出している。
- 前記7項の半導体装置の製造方法において、前記工程(d)は、前記第1の半導体チップ側をボールボンディングとし、前記第2の半導体チップ側をウエッジボンディングとする。
- 前記8項の半導体装置の製造方法において、前記第2の半導体チップの厚さは、前記第1の半導体チップの厚さよりも薄い。
- 前記9項の半導体装置の製造方法において、前記第1の半導体チップは、アンテナスイッチであり、前記第2の半導体チップは、前記第1の半導体チップを制御する制御チップである。
- 前記10項の半導体装置の製造方法において、前記第1の半導体チップは、化合物系半導体チップであり、前記第2の半導体チップは、シリコン系半導体チップである。
- 前記10項の半導体装置の製造方法において、前記第1の半導体チップは、GaAs系半導体チップであり、前記第2の半導体チップは、シリコン系半導体チップである。
- 前記12項の半導体装置の製造方法において、前記長方形を呈する複数の単位デバイス領域は、マトリクス状に配置されている。
- 前記13項の半導体装置の製造方法において、各単位デバイス領域の前記複数のダイパッドサポートリードの位置と、その単位デバイス領域における前記一方の長辺を挟んで隣接する隣接単位デバイス領域の複数のダイパッドサポートリードの位置は、ほぼ一致する。
- 前記14項の半導体装置の製造方法において、前記樹脂封止体は、2個以上の前記単位デバイス領域を一括封止している。
- 前記15項の半導体装置の製造方法において、更に以下の工程を含む:
(h)前記工程(g)の後、前記リードフレーム裏面テープを剥離する工程;
(i)前記工程(h)の後、前記樹脂封止体を個々の単位デバイス領域に対応する部分に分離する工程。 - 前記16項の半導体装置の製造方法において、前記工程(i)は、回転ブレードを用いたダイシングにより実行される。
- 前記17項の半導体装置の製造方法において、前記工程(h)において、前記リードフレーム裏面テープを剥離した際、前記第1の接着剤層は、前記第1の半導体チップ側に残る。
- 前記18項の半導体装置の製造方法において、前記樹脂封止体の厚さは、0.5ミリメートル以下である。
- 前記19項の半導体装置の製造方法において、個々に分離された前記樹脂封止体は、QFNパッケージである。
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US8283212B2 (en) * | 2010-12-28 | 2012-10-09 | Alpha & Omega Semiconductor, Inc. | Method of making a copper wire bond package |
US8921955B1 (en) * | 2011-02-24 | 2014-12-30 | Amkor Technology, Inc. | Semiconductor device with micro electromechanical system die |
JP5618873B2 (ja) * | 2011-03-15 | 2014-11-05 | 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 |
-
2011
- 2011-02-14 JP JP2011028504A patent/JP5514134B2/ja not_active Expired - Fee Related
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2012
- 2012-02-13 US US13/372,406 patent/US8987063B2/en active Active
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US20120208324A1 (en) | 2012-08-16 |
US8987063B2 (en) | 2015-03-24 |
US20150155227A1 (en) | 2015-06-04 |
JP2012169417A (ja) | 2012-09-06 |
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