JP4372022B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4372022B2 JP4372022B2 JP2005025549A JP2005025549A JP4372022B2 JP 4372022 B2 JP4372022 B2 JP 4372022B2 JP 2005025549 A JP2005025549 A JP 2005025549A JP 2005025549 A JP2005025549 A JP 2005025549A JP 4372022 B2 JP4372022 B2 JP 4372022B2
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Description
図1は、本発明の第1の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。図2は、図1の半導体装置を一部透視して概略的に示す平面図である。図3(a)、(b)は、図1の半導体装置で使用されるパッドが一辺に設けられた半導体チップ上のパッドレイアウトの一例を示す平面図およびチップ裏面にフィルム状の絶縁性接着材(有機系絶縁膜)が付着している状態を示す側面図である。
図4は、本発明の第2の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。
第3の実施形態では、第1の実施形態の半導体装置に対して、長い方の内部リード11b群の相対的な位置がずれたり、そのリード先端近傍でのリード同士が接触することを防止するために、絶縁性接着材付きのリード固定用のテープ20を使用したものである。
図7は、第3の実施形態の変形例1に係るTSOP構造の半導体装置を概略的に示す断面図である。図8は、図7の半導体装置を一部透視して概略的に示す平面図である。
図9は、第3の実施形態の変形例2に係るTSOP構造の半導体装置を概略的に示す断面図である。図10は、図9の半導体装置を一部透視して概略的に示す平面図である。
図11は、本発明の第4の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。図11に示す半導体装置は、前述した第3の実施形態の半導体装置と比べて、同じ種類および/または同じサイズの2つの半導体チップ10,102を、それぞれのパッド配列部が近接し、かつ、ずれた状態で絶縁性接着材を介して積層(スタック)した積層構造を有する点が異なり、その他は同じであるので図5中と同一符号を付している。
図12(a)、(b)、(c)は、第5の実施形態に係るTSOP構造の半導体装置の断面構造を模式的に示す図、一部透視して模式的に示す上面図および底面図である。
図13は、本発明の半導体装置をメモリ集積回路装置、例えばNANDフラッシュメモリに適用した場合のリードフレームとそれに対応する外部端子の配列の一例を示す平面図である。ここでは、前記各実施形態で示したリードフレームと比べて、内部リード11a,11b 群の左右関係を反転させたリードフレームを示している。
図14は、本発明の半導体装置をメモリ集積回路装置、例えばNANDフラッシュメモリに適用した場合のリードフレームとそれに対応する外部端子の配列の他の例を示す平面図である。ここでは、前記各実施形態で示したリードフレームと比べて、内部リード11a,11b 群の左右関係を反転させたリードフレームを示している。
各実施形態中のリードフレームとして、例えば図13あるいは図14に示したように、内部リード11a,11b 群の最外部近辺のリード幅を太くし、フレーム側面部の吊りピン部11f と結合した状態、つまり吊りピン部同士をパッケージ内部で繋いで大きくした状態とし、チップ搭載時にチップの支持面積を大きくしておくことが好ましい。これにより、チップが片側の内部リード11b 群のみにより支えられている構造と比べて、チップ搭載時の内部リード11b 群の先端部の撓みを抑え、チップの重みによる内部リード11b 群の変形を防止することができる。
図15は、本発明の第6の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。図15の半導体装置を樹脂パッケージの裏面側から透視して概略的に示す平面図は、図2に示した平面図と同様になる。図15の半導体装置で使用されるパッドが一辺に設けられた半導体チップ上のパッドレイアウトの一例およびチップ裏面にフィルム状の絶縁性接着材(有機系絶縁膜)が付着している状態を示す平面図は、それぞれ図3(a)、(b)に示した平面図と同様になる。
図16は、本発明の第7の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。
<第8の実施形態>
第8の実施形態では、第6の実施形態の半導体装置に対して、長い方の内部リード11b群の相対的な位置がずれる、またはそのリード先端近傍でのリード同士が接触する、ことを防止するために、絶縁性接着材付きのリード固定用のテープ20を使用したものである。
図18は、第8の実施形態の変形例1に係るTSOP構造の半導体装置を概略的に示す断面図である。図8は、図18の半導体装置を樹脂パッケージ裏面側から透視して概略的に示す平面図は、図8に示した平面図と同様になる。
図19は、第8の実施形態の変形例2に係るTSOP構造の半導体装置を概略的に示す断面図である。図19の半導体装置を樹脂パッケージ裏面側から透視して概略的に示す平面図は、図10に示した平面図と同様になる。
図20は、本発明の第9の実施形態に係るTSOP構造の半導体装置を概略的に示す断面図である。図20に示す半導体装置は、前述した第8の実施形態の半導体装置と比べて、同じ種類および/または同じサイズの2つの半導体チップ10,102を、それぞれのパッド配列部が近接し、かつ、ずれた状態で絶縁性接着材を介して積層(スタック)した積層構造を有する点が異なり、その他は同じであるので図17中と同一符号を付している。
図21(a)、(b)は、第10の実施形態に係るTSOP構造の半導体装置を樹脂パッケージ裏面側から透視して模式的に示す上面図および底面図である。
Claims (2)
- それぞれ複数の内部リードが配列された少なくとも一対の内部リード群を有するリードフレームと、
素子形成面側のチップ一辺に沿って集中して配置されたボンディングパッド群を有し、前記リードフレームの一対の内部リード群のうちで長い方の内部リード群上に絶縁性接着材を介して搭載された半導体チップと、
前記一対の内部リード群のうちで前記半導体チップを搭載していない側の内部リード群と前記ボンディングパッド群の一部のボンディングパッドとを接続する第1のボンディングワイヤ群と、
前記一対の内部リード群のうちで前記半導体チップを搭載している側の内部リード群の先端部と前記ボンディングパッド群の一部のボンディングパッドとを接続する第2のボンディングワイヤ群と、
前記半導体チップを搭載している側の内部リード群のチップ搭載面とは反対面の裏面に、前記内部リード群の長さ方向と直交する方向で、かつ前記半導体チップに少なくとも一部がかかる位置に貼り付けられたリード固定用のテープと、
前記リードフレームの内部リード群、半導体チップおよびボンディングワイヤ群を封止する樹脂パッケージとを具備することを特徴とする半導体装置。 - 素子形成面側のチップ一辺に沿って集中して配置されたボンディングパッド群を有する半導体チップと、
それぞれ複数の内部リードが配列された一対の内部リード群を有するリードフレームであって、前記一対の内部リード群のうちの一方の内部リード群は前記半導体チップが搭載されるチップ搭載面を有し、前記一対の内部リード群のうちの他方の内部リード群の先端部は前記半導体チップの前記ボンディングパッド群に対向するよう配置され、前記一方の内部リード群の先端部は前記他方の内部リード群の先端部と前記半導体チップとの間に位置するよう配置されたリードフレームと、
前記他方の内部リード群と前記ボンディングパッド群の一部のボンディングパッドとを接続する第1のボンディングワイヤ群と、
前記一方の内部リード群の先端部と前記ボンディングパッド群の一部のボンディングパッドとを接続する第2のボンディングワイヤ群と、
前記半導体チップを搭載している側の内部リード群のチップ搭載面とは反対面の裏面に、前記内部リード群の長さ方向と直交する方向で、かつ前記半導体チップに少なくとも一部がかかる位置に貼り付けられたリード固定用のテープと、
前記リードフレームの内部リード群、半導体チップおよびボンディングワイヤ群を封止する樹脂パッケージとを具備することを特徴とする半導体装置。
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