JP2009105301A - 半導体パッケージ及びその製造方法、半導体パッケージを備える半導体装置 - Google Patents
半導体パッケージ及びその製造方法、半導体パッケージを備える半導体装置 Download PDFInfo
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- JP2009105301A JP2009105301A JP2007277308A JP2007277308A JP2009105301A JP 2009105301 A JP2009105301 A JP 2009105301A JP 2007277308 A JP2007277308 A JP 2007277308A JP 2007277308 A JP2007277308 A JP 2007277308A JP 2009105301 A JP2009105301 A JP 2009105301A
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Abstract
【解決手段】半導体チップ20の電極パッド21に接続されたボンディングワイヤ30を封止するモールド部50を有する半導体パッケージ10において、ボンディングワイヤ30を埋め込むと共にモールド部50を貫通して先端部がモールド部の上面50A及びモールド部の下面50Bから露出する貫通電極部40を備える。
【選択図】図1
Description
本発明の実施形態1を、図1及び図2を参照しつつ説明する。図1は、実施形態1の半導体パッケージ10の概略断面図であり、図2は、半導体パッケージ10の概略平面図である。半導体パッケージ10は、半導体チップ20と、金属バンプ25と、リード線30と、リード線接続電極35と、導電性ポスト40と、モールド部50とを備えている。
本実施形態の半導体パッケージ10及びその製造方法によれば、半導体チップ20の金属バンプ25にそれぞれ接続された各リード線30が、各導電性ポスト40に埋められ、各導面性ポスト40の上面40Aが、レジスト膜65の上面65Aから露出すると共に、各導電性ポスト40の下面40Bが、レジスト膜65の下面65Bから露出する。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、レジスト膜65の上面65A及びレジスト膜65の下面40Bから、半導体チップ20の金属バンプ25にそれぞれ電気的に接続された各導面性ポスト40の上面40A及び下面40Bを通じ、半導体チップ20の電気検査を行うことができる。
このため、本実施形態の半導体パッケージ10及びその製造方法によれば、レジスト膜65の両面(上面65A及び下面65B)から、半導体チップ20の電気検査を行うことができるため、電気検査の手順の幅を広げることができ、従来に比べて電気検査を容易に行うことができる。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、リード線30に加わる機械的ストレスを抑制することにより、リード線30が切断することを防止することができる。
このため、本実施形態の半導体パッケージ10及びその製造方法によれば、各リード線30の切断を防ぐことにより、各リード線30を通じ、半導体チップ20と導電性ポスト40との導通状態を確保することができる。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、一般的な技術を用いて導電性ポスト40を形成することにより、半導体パッケージ10の製造コストが上昇することを防ぐことができる。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、半導体パッケージ10に半導体チップ20をパッケージングする際に、半導体チップ20が破損した場合であっても、単一の半導体パッケージ10に複数の半導体チップ20を実装したMCP構造とは異なり、破損する半導体チップ20の数量を最小限に抑えることができる。
このため、本実施形態の半導体パッケージ10及びその製造方法によれば、パッケージングの際に破損したために廃棄する半導体チップ20の数量を最小限にすることができ、半導体チップ20を実装した半導体パッケージ10の製造歩留まりが低下することを抑制することができる。
そこで、本発明の半導体パッケージ10及びその製造方法によれば、被膜40Cによって、導電性ポスト40の上面40A及び下面40Bの内のいずれか一方又は双方に酸化膜が形成されることを防ぐことができ、導電性ポスト40の耐腐食性を向上させることができる。
また、本発明の半導体パッケージ10及びその製造方法によれば、被膜40Cによって、導電性ポスト40の上面40A及び下面40Bの内のいずれか一方又は双方に酸化膜が形成されることを防止すると、導電性ポスト40に対する半田の付着を促進し、半田濡れ性を向上させることができる。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、リード線接続電極35(35A〜35L)によって、導電性ポスト40とは別個に、半導体チップ20の金属バンプ25に導通する部分を確保すると、半導体チップ20の金属バンプ25に導通する部分が複数存在することになる。
このため、本実施形態の半導体パッケージ10及びその製造方法によれば、半導体チップ20の金属バンプ25に導通する部分が複数存在することにより、半導体チップ20の金属バンプ25に対する接続の方法に多様性を持たせることができる。
そこで、本実施形態の半導体パッケージ10及びその製造方法によれば、半導体チップ20の電気検査用機器を接触させる各導電性ポスト40の上面40Aの面積及び下面40Bの面積を、リード線接続電極35(35A〜35L)が露出する面積より広くすることができる。
このため、本実施形態の半導体パッケージ10及びその製造方法によれば、半導体チップ20の電気検査用機器を接触させる各導電性ポスト40の上面40Aの面積及び下面40Bの面積を、リード線接続電極35(35A〜35L)が露出する面積より広くすることにより、電気検査用機器の接触不良を抑制することができる。
したがって、本実施形態の半導体パッケージ10及びその製造方法によれば、各導電性ポスト40に対する電気検査用機器の接触不良を抑制することができ、半導体チップ20の電気検査を確実に行うことができる。
本発明の実施形態2を、図17を参照しつつ説明する。図17は、実施形態2の半導体装置の概略断面図である。ここでは、実施形態1と同一の構成は同一の符号を付し、その説明を省略する。実施形態2の半導体装置1は、上記の半導体パッケージ10と、マザー基板70とを備えている。
本実施形態の半導体装置1では、半導体パッケージ10Bの各導電性ポスト40の下面40Bが、被膜40Cを介し、半田Hによって、半導体パッケージ10Aの各導電性ポスト40の上面40Aに固定されている。さらに、本実施形態の半導体装置1では、半導体パッケージ10Bの各導電性ポスト40の上面40Aが、被膜40Cを介し、半田Hによって、半導体パッケージ10Cの各導電性ポスト40の下面40Bに固定されている。これにより、本実施形態の半導体装置1では、半導体パッケージ10Bの上方に半導体パッケージ10Cを配置し、半導体パッケージ10Bの下方に半導体パッケージ10Aを配置し、3層に亘って半導体パッケージ10A〜10Cを積層している。
さらに、3層に亘って積層された半導体パッケージ10A〜10Cの内の最下層の半導体パッケージの10Aでは、該半導体パッケージ10Aの各導電性ポスト40の下面40Bが、半田Hによって、配線パターン71に固定されている。
そこで、本実施形態の半導体装置1によれば、各半導体パッケージ10A〜10Cの導電性ポスト40を用いることにより、マザー基板70の配線パターン71から最下層の半導体パッケージ10Aの導電性ポスト40を介し、積層された各半導体パッケージ10A〜10Cの導電性ポスト40に通じる導通路を確保することができる。
したがって、本実施形態の半導体装置1によれば、3つの半導体パッケージ10A〜10Cに対する導電路を確保しつつ3つの半導体パッケージ10A〜10Cを積層することにより、半導体パッケージの実装密度を高めることができ、半導体装置1の小型化に寄与することができる。
そこで、本実施形態の半導体装置1によれば、各導電性ポスト40の上面40Aの面積及び下面40Bの面積を、リード線接続電極35(35A〜35L)の露出面積よりも広くすることにより、被膜40Cを介して半田Hを付着させる面積を有効に確保することができる。
このため、本実施形態の半導体装置1によれば、半田Hを付着させる面積を有効に確保することにより、半田Hを用い、マザー基板70の配線パターン71から積層された各半導体パッケージ10A〜10Cの導電性ポスト40に通じる導通路の導通状態を良好に保つことができる。
そこで、本実施形態の半導体装置1によれば、前記耐腐食性の向上や前記半田濡れ性の向上に伴って、マザー基板70の配線パターン71から積層された各半導体パッケージ10A〜10Cの導電性ポスト40に通じる導通路の導通状態が良好になる。
このため、本実施形態の半導体装置1によれば、前記導通路の導通状態を良好にすることにより、半導体装置の動作を安定させることができ、半導体装置の信頼性を向上させることができる。
本発明の実施形態3を、図18を参照しつつ説明する。図18は、実施形態3の半導体装置の概略断面図である。ここでは、実施形態1及び実施形態2と同一の構成は同一の符号を付し、その説明を省略する。実施形態3の半導体装置2は、実施形態2と同様の半導体パッケージ10及び実施形態2と同様のマザー基板70に加え、接着剤層80を備えている。
本実施形態の半導体装置2によれば、接着剤層80によって、積層された3つの半導体パッケージ10A〜10C同士を互いに一体化することにより、3つの半導体パッケージ10A〜10C同士を強固に固定することができ、衝撃に対する半導体装置2の強度を向上させることができる。
また、本実施形態の半導体装置2によれば、3つの半導体パッケージ10A〜10C同士を固定することに加えて、接着剤層80によって、マザー基板70と最下層の半導体パッケージ10Aとを一体化することにより、マザー基板70と最下層の半導体パッケージ10Aとを強固に固定することができる。
そこで、本実施形態の半導体装置2によれば、3つの半導体パッケージ10A〜10C同士を固定することに加え、マザー基板70と最下層の半導体パッケージ10Aとを強固に固定することにより、衝撃に対する半導体装置2の強度を向上させることができる。
そこで、半導体装置5によれば、Auワイヤ31の配線経路を変化させることにより、各リード線接続電極35(35A〜35L)を通じ、半導体チップ20の金属バンプ25を配線パターン75に導通させる経路に多様性を持たせることができる。
このため、半導体装置5によれば、半導体チップ20の金属バンプ25を配線パターン75に導通させる経路に多様性を持たせることにより、Auワイヤ31の配線の自由度を向上させることができる。
20 半導体チップ
21 電極
30 リード線
35 リード線接続電極
40 導電性ポスト
40A 導電性ポストの上面
40B 導電性ポストの下面
40C 被膜
50 モールド部
65 レジスト膜
80 接着剤層
Claims (20)
- 半導体チップの電極パッドに接続されたボンディングワイヤを封止するモールド部を有する半導体パッケージにおいて、
前記ボンディングワイヤを埋め込むと共に前記モールド部を貫通して先端部が該モールド部の上面及び該モールド部の下面から露出する貫通電極部を備えることを特徴とする半導体パッケージ。 - 前記貫通電極部は、前記モールド部を貫通すると共に電解めっきによって形成された柱状部の内部を前記ボンディングワイヤが横断する柱状導電部を備えることを特徴とする請求項1に記載の半導体パッケージ。
- 前記半導体パッケージは、単一の前記半導体チップを収容することを特徴とする請求項1に記載の半導体パッケージ。
- 前記柱状導電部が前記モールド部から露出する前記柱状導電部の露出面には、金属めっきが施されていることを特徴とする請求項2に記載の半導体パッケージ。
- 前記ボンディングワイヤに接続されて前記モールド部から露出する配線接続部を備えることを特徴とする請求項2に記載の半導体パッケージ。
- 前記柱状導電部の露出面の面積は、前記配線接続部の面積よりも広いことを特徴とする請求項4又は請求項5に記載の半導体パッケージ。
- 半導体チップの電極パッドに接続されたボンディングワイヤを封止するモールド部を有する半導体パッケージの製造方法において、
前記ボンディングワイヤを埋め込むと共に前記モールド部を貫通して先端部が該モールド部の上面及び該モールド部の下面から露出する貫通電極部を形成する貫通電極部形成ステップを備えることを特徴とする半導体パッケージの製造方法。 - 前記貫通電極部形成ステップは、前記モールド部を貫通すると共に電解めっきによって形成された柱状部の内部を前記ボンディングワイヤが横断する柱状導電部を形成するステップを備えることを特徴とする請求項7に記載の半導体パッケージの製造方法。
- 前記半導体パッケージは、単一の前記半導体チップを収容することを特徴とする請求項7に記載の半導体パッケージの製造方法。
- 前記柱状導電部が前記モールド部から露出する前記柱状導電部の露出面に金属めっきを施すステップを備えることを特徴とする請求項8に記載の半導体パッケージの製造方法。
- 前記ボンディングワイヤに接続されて前記モールド部から露出する配線接続部を形成するステップを備えることを特徴とする請求項8に記載の半導体パッケージの製造方法。
- 前記柱状導電部の露出面の面積は、前記配線接続部の面積よりも広いことを特徴とする請求項10又は請求項11に記載の半導体パッケージの製造方法。
- 半導体チップの電極パッドに接続されたボンディングワイヤを封止するモールド部を有する半導体パッケージを備える半導体装置において、
前記半導体パッケージは、前記ボンディングワイヤを埋め込むと共に前記モールド部を貫通して先端部が該モールド部の上面及び該モールド部の下面から露出する貫通電極部を備えることを特徴とする半導体装置。 - 前記貫通電極部は、前記モールド部を貫通すると共に電解めっきによって形成された柱状部の内部を前記ボンディングワイヤが横断する柱状導電部を備えることを特徴とする請求項13に記載の半導体装置。
- 前記半導体パッケージは、単一の前記半導体チップを収容することを特徴とする請求項13に記載の半導体装置。
- 前記柱状導電部が前記モールド部の上面から露出する第1露出面及び前記柱状導電部が前記モールド部の下面から露出する第2露出面のいずれか一方又は双方には、金属めっきが施されていることを特徴とする請求項14に記載の半導体装置。
- 前記ボンディングワイヤに接続されて前記モールド部から露出する配線接続部を備えることを特徴とする請求項14に記載の半導体装置。
- 前記第1露出面の面積及び前記第2露出面の面積は、前記配線接続部の面積よりも広いことを特徴とする請求項16又は請求項17に記載の半導体装置。
- 配線パターンが形成されたマザー基板と、
上層の前記半導体パッケージの前記第2露出面が、下層の前記半導体パッケージの前記第1露出面に固定されることにより積層された複数の半導体パッケージと、を備え、
前記配線パターンに、前記積層された複数の半導体パッケージの内の最下層の半導体パッケージの第2露出面を固定することを特徴とする請求項16に記載の半導体装置。 - 前記複数の半導体パッケージ同士が互いに接着され、前記マザー基板と前記最下層の半導体パッケージとが互い接着されていることを特徴とする請求項19に記載の半導体装置。
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