JP2019160882A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims description 66
- 238000000034 method Methods 0.000 claims description 37
- 238000005530 etching Methods 0.000 claims description 36
- 230000001681 protective effect Effects 0.000 claims description 17
- 239000002184 metal Substances 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 19
- 229910000679 solder Inorganic materials 0.000 description 17
- 239000000758 substrate Substances 0.000 description 12
- 238000007747 plating Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- GUVLYNGULCJVDO-UHFFFAOYSA-N EPTC Chemical compound CCCN(CCC)C(=O)SCC GUVLYNGULCJVDO-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Abstract
Description
前記ダイパッドの周囲に配置された複数のリードと、
前記リードの下面および前記リードの前記ダイパッドから遠い側のリードの外側を露出する封止樹脂と、を備え、
前記リードの外側の上部には凹部が設けられ、
前記凹部と面する前記リード凹面は少なくとも順テーパー形状の傾斜面からなり、
前記リードの外側の一部が前記封止樹脂の側面よりも突出することを特徴とする半導体装置とした。
前記ダイパッド上に半導体チップを載置し、前記半導体チップと前記リードを電気的に接続する工程と、
少なくとも前記ダイパッドと前記半導体チップと前記リードとを樹脂封止して一括封入ブロックを形成する工程と、
前記一括封入ブロックの底面に保護フィルムを貼り付ける工程と、
前記一括封入ブロックの底面と反対側の上面から前記リードの一部まで、第1の幅のダイシングブレードで切削して第1切削領域を形成する第1切削工程と、
前記第1の切削工程で露出した前記リードを等方的にエッチングする第1エッチング工程と、
前記第1切削領域の底面から前記一括封入ブロックの底面まで、前記第1の幅よりも狭い第2の幅のダイシングブレードで切削する第2切削工程と、
前記保護フィルムを除去する工程と、
を備えることを特徴とする半導体装置の製造方法を用いた。
図1は、本発明の第1実施形態にかかる半導体装置の製造方法を説明する斜視図である。一括封入ブロック1は封止樹脂8の塊であって、中には半導体チップ等が封止されている。一括封入ブロック1に切断線1c,1dを格子状に図示しており、この切断線に沿って個々の半導体装置に個片化することになる。
上記工程を経て、本発明の半導体装置が得られる。
図12は、本発明の第2実施形態にかかる半導体装置の製造方法の工程断面図である。第1実施形態の図6と対比すると、第1切削領域12aの先端に、細く深い第3切削領域12cを設け、第3切削領域12cに対応するエッチング領域14がリード底面7bに達する点で第1実施形態と異なる。第1切削領域12aと第3切削領域12cを形成するためには、まず幅広の第1ダイシングブレード(ブレード厚100μm以上)でリード構成部7の薄肉部の底面付近まで切削して第1切削領域12aを形成し、次いで、第2ダイシングブレードよりも幅狭の第3ダイシングブレード(ブレード厚20μm〜30μm)で第1切削領域12aの中心部を掘り下げることで第3切削領域12cを形成する。これらの切削工程は、幅広の第1ダイシングブレード(ブレード厚100μm以上)の先端に極薄の第3ダイシングブレード(ブレード厚20μm〜30μm)を設けたダイシングブレードを用いることで同時に1つの工程で行うこともできる。
1a 樹脂底面
1b 樹脂上面
1c 切断線
1d 切断線
2 保護フィルム
3 金属バリ
4 半導体装置
5 リードフレーム
6 ダイパッド
6a ダイパッド庇部
6b ダイパッド底面
6c ダイパッド上面
7 リード構成部
7a リード庇部
7b リード底面
7c リード上面
7d リード凹面
7e リード凹部
7f リード水平面
7g リード切断面
7h リード傾斜面
7i リード垂直面
8 封止樹脂
8a 第1樹脂側面
8b 第2樹脂側面
9 リード
10 半導体チップ
11 ボンディングワイヤ
12 第1ダイシングブレード
12a 第1切削領域
12b 第1切削下面
12c 第3切削領域
13 第2ダイシングブレード
14 エッチング領域
Claims (6)
- 半導体チップを載置するダイパッドと、
前記ダイパッドの周囲に配置された複数のリードと、
前記リードの下面および前記リードの前記ダイパッドから遠い側のリードの外側を露出する封止樹脂と、を備え、
前記リードの外側の上部には凹部が設けられ、
前記凹部と面する前記リード凹面は少なくとも順テーパー形状の傾斜面からなり、
前記リードの外側の一部が前記封止樹脂の側面よりも突出することを特徴とする半導体装置。 - 前記リード凹面は順テーパーの傾斜面に加え、水平面を有することを特徴とする請求項1に記載の半導体装置。
- ダイパッドと前記ダイパッドの周囲に配置された複数のリードとを有するリードフレームを準備する工程と、
前記ダイパッド上に半導体チップを載置し、前記半導体チップと前記リードを電気的に接続する工程と、
少なくとも前記ダイパッドと前記半導体チップと前記リードとを樹脂封止して一括封入ブロックを形成する工程と、
前記一括封入ブロックの底面に保護フィルムを貼り付ける工程と、
前記一括封入ブロックの底面と反対側の上面から前記リードの一部まで、第1の幅のダイシングブレードで切削して第1切削領域を形成する第1切削工程と、
前記第1の切削工程で露出した前記リードを等方的にエッチングする第1エッチング工程と、
前記第1切削領域の底面から前記一括封入ブロックの底面まで、前記第1の幅よりも狭い第2の幅のダイシングブレードで切削する第2切削工程と、
前記保護フィルムを除去する工程と、
を備えることを特徴とする半導体装置の製造方法。 - 前記第2切削工程の後に、前記第1エッチング工程よりもエッチング量の少ない第2エッチング処理を行うことを特徴とする請求項3に記載の半導体装置の製造方法。
- 前記第1切削工程と前記第1エッチング工程の間に、前記第2の幅よりも狭いダイシングブレードで切削する第3切削工程を設け、
前記第1エッチング工程において、前記リードの底面に達するエッチングを行うことを特徴とする請求項3に記載の半導体装置の製造方法。 - 前記保護フィルムを除去する工程の後に、前記リードの表面にメッキをすることを特徴とする請求項3乃至請求項5のいずれか1項に記載の半導体装置の製造方法。
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