JP2014154785A - 樹脂封止型半導体装置およびその製造方法 - Google Patents
樹脂封止型半導体装置およびその製造方法 Download PDFInfo
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- JP2014154785A JP2014154785A JP2013024972A JP2013024972A JP2014154785A JP 2014154785 A JP2014154785 A JP 2014154785A JP 2013024972 A JP2013024972 A JP 2013024972A JP 2013024972 A JP2013024972 A JP 2013024972A JP 2014154785 A JP2014154785 A JP 2014154785A
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- 239000010949 copper Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
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- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
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- 239000010931 gold Substances 0.000 claims description 3
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Abstract
【解決手段】ダイパッド部上に搭載された半導体素子と、ダイパッド部にその先端部が対向して配置された複数のリード部と、半導体素子の電極とリード部とを接続した金属細線と、それらを部分的に樹脂封止した樹脂封止型半導体装置のダイパッド部の底面部とリード部のリード底面部と外側面部と上側端部を封止樹脂から露出し、リード上側端部の上に封止樹脂の無い切り欠き部を形成した後、リード底面部およびリード上側端部にメッキ層を施す。
【選択図】図5
Description
まず、ダイパッド部と、前記ダイパッド部上に搭載された半導体素子と、前記ダイパッド部に対向して配置された複数のリード部と、前記半導体素子の複数の電極と前記複数のリード部とを接続している金属細線と、前記複数のリード部が部分的に露出するように、前記ダイパッド部、前記半導体素子および前記複数のリード部を封止している封止樹脂と、を有し、前記複数のリード部は、前記封止樹脂から露出した、底面であるリード底面部と先端であるリード外側面部と上面の一部であるリード上側端部とを備えており、前記リード底面部は前記封止樹脂の底面と同一面内にあり、前記リード底面部および前記リード上側端部はメッキ層を有しており、前記リード上側端部の鉛直上方には前記封止樹脂の無い切り欠き部を介して前記封止樹脂が存在することを特徴とする樹脂封止型半導体装置とした。
また、前記リード外側面部が前記封止樹脂の側面と同一面であることを特徴とする樹脂封止型半導体装置とした。
また、前記リード底面部のメッキ層および前記リード上側端部のメッキ層は、鉛、ビスマス、スズ、銅、銀、パラジウム、金のいずれか一つの金属層もしくは2つ以上の合金層からなることを特徴とする樹脂封止型半導体装置とした。
また、前記ダイパッド部の底面部が前記封止樹脂から露出していることを特徴とする樹脂封止型半導体装置とした。
また、前記リード部が、インナーリード部とアウターリード部からなり、インナーリード部がアウターリード部よりも高くなるように折り曲げられていることを特徴とする樹脂封止型半導体装置とした。
前記フレームもしくは電鋳基板の第1面に封止シートを貼り付ける工程と、前記リード部の前記第1面と反対側の第2面に可溶性フィルムを形成する工程と、前記フレームもしくは電鋳基板の前記ダイパッド部の各々に半導体素子を搭載し、前記リード部と前記半導体素子表面の電極を金属細線で接続する工程と、前記複数のリード部のリード底面部が露出するように、前記ダイパッド部と前記半導体素子と前記リード部とを封止樹脂により樹脂封止する工程と、前記可溶性フィルムを溶解除去し、空洞部を形成する工程と、
前記フレームもしくは電鋳基板をメッキ浴に浸して前記リード底面部と前記リード上側端部にメッキ層を形成する工程と、前記第1面側から前記リード部に第1の切断を施して、前記空洞部に至る第1の溝を形成する工程と、前記第1面と反対側の第2面側から前記封止樹脂を第2の切断を施して、前記フレームから樹脂封止型半導体装置を分離する工程と、からなることを特徴とする樹脂封止型半導体装置の製造方法を用いた。
また、前記第1の切断がパンチ切断であって、前記第2の切断もパンチ切断であることを特徴とする樹脂封止型半導体装置の製造方法を用いた。
また、前記第1の切断が回転ブレード切断であって、前記第2の切断もパンチ切断であることを特徴とする樹脂封止型半導体装置の製造方法を用いた。
そして、前記回転ブレードにおける切断幅と前記パンチ切断における切断幅とが同じであって、前記空洞部の幅よりも狭いことを特徴とする樹脂封止型半導体装置の製造方法を用いた。
図1は本実施例の半導体素子搭載したフレームもしくは電鋳基板の上面図であり、図2(a)は半導体素子搭載前のフレーム上面図、図2(b)〜図4(k)は、半導体装置の製造方法を示す断面図である。本実施例の半導体装置は、図1に示すように、フレームは銅(Cu)材からなり、ダイパッド部12上に搭載された半導体素子11と、ダイパッド部12にその先端部が対向して配置された複数のリード部13とを1ユニットとして、そのユニットを複数有した構成になる。図中の破線は、半導体素子11を搭載して樹脂封止型半導体装置を構成する場合、封止樹脂16で封止する領域を示しており、また二点鎖線で示したラインは、半導体素子11を搭載した後、樹脂封止し、樹脂封止型半導体装置を構成した後、各々の半導体装置に分離する切断ラインを示している。
まず、図2(a)に示すように、フレーム内に半導体素子が載置される矩形状のダイパッド部12とそのダイパッド部12に先端部が対向して配置された複数のリード部13とを1ユニットとして、そのユニットを複数有した銅材よりなるリードフレームを用意する。リードフレームの底面側には、封止シート15が貼付されており、この封止シート15はリード部13の底面に封止樹脂が回り込まないように保護し、リード部13の底面を露出させるための機能部材となっている。
12 ダイパッド部
13 リード部
14 金属細線
15 封止シート
16 封止樹脂
17 メッキ層
18 ハンダ
19a リード底面部
19b リード上側端部
19c リード外側面部
20 実装基板
21 ランド部
22 切り欠き部
23 水溶性テープ
24 空洞部
25 肉薄部
Claims (13)
- ダイパッド部と、
前記ダイパッド部上に搭載された半導体素子と、
前記ダイパッド部の少なくとも2辺に対向して配置された複数のリード部と、
前記半導体素子の表面に設けられた複数の電極と前記複数のリード部とを接続している金属細線と、
前記複数のリード部が部分的に露出するように、前記ダイパッド部、前記半導体素子および前記複数のリード部を封止している封止樹脂と、を有し、
前記複数のリード部は、前記封止樹脂から露出した、底面であるリード底面部と先端であるリード外側面部と上面の一部であるリード上側端部とを備えており、
前記リード底面部は前記封止樹脂の底面と同一面内にあり、
前記リード底面部および前記リード上側端部はメッキ層を有しており、
前記リード上側端部の鉛直上方には前記封止樹脂の無い切り欠き部を介して前記封止樹脂が存在することを特徴とする樹脂封止型半導体装置。 - 前記切り欠き部の断面は、コの字型であることを特徴とする請求項1に記載の樹脂封止型半導体装置。
- 前記ダイパッド部の底面部が前記封止樹脂から露出していることを特徴とする請求項1又は2に記載の樹脂封止型半導体装置。
- 前記リード外側面部が前記封止樹脂の側面よりも外側に突出していることを特徴とする請求項1乃至3のいずれか1項に記載の樹脂封止型半導体装置。
- 前記リード外側面部が前記封止樹脂の側面と同一面であることを特徴とする請求項1乃至3のいずれか1項に記載の樹脂封止型半導体装置。
- 前記リード底面部のメッキ層および前記リード上側端部のメッキ層は、鉛、ビスマス、スズ、銅、銀、パラジウムおよび金の中から選ばれた一つの金属からなる金属層もしくは二つ以上の金属の合金からなる合金層であることを特徴とする請求項1乃至5のいずれか1項に記載の樹脂封止型半導体装置。
- 前記複数のリード部は、それぞれインナーリード部とアウターリード部からなり、前記インナーリード部が前記アウターリード部よりも高くなるように折り曲げられていることを特徴とする請求項1乃至6のいずれか1項に記載の樹脂封止型半導体装置。
- ダイパッド部および前記ダイパッド部に対向して配置された複数のリード部を1ユニットとして、そのユニットを複数有したフレームもしくは電鋳基板を準備する工程と、
前記フレームもしくは電鋳基板の第1面に封止シートを貼り付ける工程と、
前記複数のリード部の前記第1面と反対側の第2面に可溶性フィルムを形成する工程と、
前記フレームもしくは電鋳基板の前記ダイパッド部の各々に半導体素子を搭載し、前記複数のリード部と前記半導体素子表面の電極を金属細線で接続する工程と、
前記複数のリード部のリード底面部が露出するように、前記ダイパッド部と前記半導体素子と前記複数のリード部とを封止樹脂により樹脂封止する工程と、
前記可溶性フィルムを溶解除去し、前記封止樹脂に空洞部を形成する工程と、
前記フレームもしくは電鋳基板をメッキ浴に浸して前記リード底面部とリード上側端部にメッキ層を形成する工程と、
前記第1面側から前記複数のリード部に第1の切断を施して、前記空洞部に至る第1の溝を形成する工程と、
前記第1面と反対側の第2面側から前記封止樹脂に第2の切断を施して、前記フレームから樹脂封止型半導体装置を分離する工程と、
からなることを特徴とする樹脂封止型半導体装置の製造方法。 - 前記第1の切断がパンチ切断であり、前記第2の切断が回転ブレード切断であることを特徴とする請求項8記載の樹脂封止型半導体装置の製造方法。
- 前記第1の切断がパンチ切断であり、前記第2の切断もパンチ切断であることを特徴とする請求項8記載の樹脂封止型半導体装置の製造方法。
- 前記第1の切断が回転ブレード切断であり、前記第2の切断がパンチ切断であることを特徴とする請求項8記載の樹脂封止型半導体装置の製造方法。
- 前記第2の切断による切断幅が前記第1の切断による切断幅よりも広く、前記空洞部の幅よりも狭いことを特徴とする請求項8乃至11のいずれか1項に記載の樹脂封止型半導体装置の製造方法。
- 前記第2の切断による切断幅と前記第1の切断による切断幅とが同じであって、前記空洞部の幅よりも狭いことを特徴とする請求項8乃至11のいずれか1項に記載の樹脂封止型半導体装置の製造方法。
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US9431273B2 (en) | 2016-08-30 |
KR102082941B1 (ko) | 2020-02-28 |
CN103985690A (zh) | 2014-08-13 |
CN103985690B (zh) | 2018-09-25 |
TW201448127A (zh) | 2014-12-16 |
US9275972B2 (en) | 2016-03-01 |
JP6030970B2 (ja) | 2016-11-24 |
TWI591775B (zh) | 2017-07-11 |
KR20140101686A (ko) | 2014-08-20 |
US20140225239A1 (en) | 2014-08-14 |
US20160086826A1 (en) | 2016-03-24 |
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