JP5547703B2 - 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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- JP5547703B2 JP5547703B2 JP2011227885A JP2011227885A JP5547703B2 JP 5547703 B2 JP5547703 B2 JP 5547703B2 JP 2011227885 A JP2011227885 A JP 2011227885A JP 2011227885 A JP2011227885 A JP 2011227885A JP 5547703 B2 JP5547703 B2 JP 5547703B2
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- 239000004065 semiconductor Substances 0.000 title claims description 201
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 239000000758 substrate Substances 0.000 claims description 82
- 239000011347 resin Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 39
- 229910000679 solder Inorganic materials 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 24
- 239000004020 conductor Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 230000002950 deficient Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000008393 encapsulating agent Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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Description
(a)第1表面と、前記第1表面に設けられたチップ搭載領域と、前記チップ搭載領域の周辺に沿うように前記第1表面に設けられた接続ランドと、前記第1表面とは反対側の第1裏面と、を有する第1基板を準備する工程
(b)第2表面と、前記第2表面とは反対側の第2裏面と、を有する第2基板を準備する工程
(c)前記第1基板の前記チップ搭載領域に第1半導体チップを搭載する工程
(d)前記第2基板の前記第2表面に第2半導体チップを搭載する工程
(e)前記第1半導体チップおよび前記第1基板の前記第1表面を樹脂で封止し、第1封止体を形成する工程
(f)前記第1封止体に、前記接続ランドに至る開口部を形成する工程
(g)前記第2半導体チップおよび前記第2基板の前記第2表面を樹脂で封止し、第2封止体を形成する工程
(h)前記第1基板の前記第1裏面に第1接続端子を形成する工程
(i)前記第2基板の前記第2裏面に半田バンプを形成する工程
(j)前記開口部に導電性材料を埋め込む工程
(k)前記第1基板および前記第1封止体を切断して個片化して第1半導体パッケージを準備する工程
(l)前記第2基板および前記第2封止体を切断して個片化し、第2半導体パッケージを準備する工程
(m)前記第1パッケージの第1封止体表面に露出した前記導電性材料に対して、前記第2半導体パッケージの前記半田バンプを接触させる工程
(n)前記半田バンプに対してリフローを施す工程
図1(a)はPoPの断面構造の一例である。第1の半導体パッケージ100と第2の半導体パッケージ200が積層接続された構造となっている。本実施の形態では、2層構造の半導体装置であるため、第2の半導体パッケージ200が最上段に配置された半導体パッケージとなる。ここで、第1の半導体パッケージ100は、基板11上にフリップチップ接続された半導体素子12を有し、基板11と半導体素子12の間にはアンダーフィル樹脂13が充填されている。半導体素子12の外周部には接合ランド14が設けられ、半導体素子12形成部を除く基板11全域が樹脂15により封止されている。樹脂15は半導体素子12部を含め基板11全域を覆うように形成されていてもよいが、積層型半導体装置としての薄型化を考慮した場合、図1(a)のように樹脂15は半導体素子12部を除く基板11上に形成し、半導体素子12の裏面は露出させる構成とした方が好ましい。
本実施の形態は、第1の半導体パッケージがワイヤーボンディングにより形成されている点で、第1の実施例と異なる。
本実施の形態は、第1の半導体パッケージ上に第2の半導体パッケージを積層する工程において特徴を有するものである。したがって、他の製造工程は第1の実施の形態、または第2の実施の形態と同様であるため、その説明を省略する。
本実施の形態は、第1の半導体パッケージ上に第2の半導体パッケージを積層する工程において特徴を有するものである。したがって、他の製造工程は第1の実施の形態、または第2の実施の形態と同様であるため、その説明を省略する。
本実施の形態は、第1の半導体パッケージ上に第2の半導体パッケージを積層する工程において特徴を有するものである。したがって、他の製造工程は第1の実施の形態、または第2の実施の形態と同様であるため、その説明を省略する。
12 半導体素子
13 アンダーフィル樹脂
14 接続ランド
15 樹脂
16 開口部
17 ボール電極
18 半田ボール
19 導電体(半田バンプ)
20 マトリクス基板
21 不良部位
22 スクリーンマスク
23 半田ペースト
24 スキージ
25 熱硬化接着材剤
26 放熱ペースト
27 接続不良部
100 第1の半導体パッケージ
200 第2の半導体パッケージ
Claims (8)
- 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)第1表面と、前記第1表面に設けられた複数のチップ搭載領域と、前記複数のチップ搭載領域のそれぞれの周辺に沿うように前記第1表面に設けられた複数の接続ランドと、前記第1表面とは反対側の第1裏面と、を有し、前記複数のチップ搭載領域が格子状に配置された第1基板を準備する工程
(b)第2表面と、前記第2表面とは反対側の第2裏面と、を有する第2基板を準備する工程
(c)前記第1基板の不良部位を除いた前記複数のチップ搭載領域のそれぞれに第1半導体チップを搭載する工程
(d)前記第2基板の前記第2表面に複数の第2半導体チップを搭載する工程
(e)複数の前記第1半導体チップと、前記不良部位を含む前記第1基板の前記第1表面と、を樹脂で封止し、前記第1基板の前記第1表面と接する面とは反対側に位置する面を平滑に形成した第1封止体を形成する工程
(f)前記第1封止体に、それぞれが互いに異なる前記接続ランドに至る複数の開口部を形成する工程
(g)前記複数の第2半導体チップおよび前記第2基板の前記第2表面を樹脂で封止し、第2封止体を形成する工程
(h)前記第1基板の前記第1裏面に複数の第1接続端子を形成する工程
(i)前記第2基板の前記第2裏面に複数の半田バンプを形成する工程
(j)前記複数の開口部のそれぞれに導電性材料を埋め込む工程
(k)前記第1基板および前記第1封止体を切断して個片化して第1半導体パッケージを準備する工程
(l)前記第2基板および前記第2封止体を切断して個片化し、第2半導体パッケージを準備する工程
(m)前記第1パッケージの第1封止体表面に露出した複数の前記導電性材料に対して、前記第2半導体パッケージの前記半田バンプを接触させる工程
(n)前記半田バンプに対してリフローを施す工程 - 請求項1に記載の半導体装置の製造方法において、
前記導電性材料は、半田ペーストであり、
前記(n)工程において、前記複数の開口部に埋め込まれた前記半田ペーストと、前記第2基板の前記第2裏面に設けられた前記複数の半田バンプと、はリフローによって金属間接合を形成する半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法において、
前記(j)工程において、前記第1封止体上に配置されたスクリーンマスクを介し、スキージを用いて、前記複数の開口部内に導電性材料を埋め込む半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法において、
前記(c)工程において、前記複数の第1半導体チップは、前記複数のチップ搭載領域にフリップチップ接続により搭載される半導体装置の製造方法。 - 請求項4に記載の半導体装置の製造方法において、
前記(e)工程において、前記複数の第1半導体チップのそれぞれは、フリップチップ接続面である第1主面とは反対側の第2主面が露出するように前記樹脂により封止される半導体装置の製造方法。 - 請求項5に記載の半導体装置の製造方法において、
前記(m)工程は、前記第2基板の前記第2裏面が前記第2主面上に設けられた放熱性ペーストに接触するように積層した半導体装置の製造方法。 - 請求項5に記載の半導体装置の製造方法において、
前記(f)工程は、前記(e)工程において施される半導体装置の製造方法。 - 請求項7に記載の半導体装置の製造方法において、
前記第1基板の前記第1表面に形成された前記複数の接続ランドに相対する複数の凸部を備えた樹脂封止金型により、前記複数の第1半導体チップの前記第2主面のそれぞれと前記樹脂封止金型を接触させながら、前記樹脂封止金型の前記複数の凸部とそれぞれの前記第2主面上に前記樹脂が流れ込まないように前記樹脂を成型する半導体装置の製造方法。
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