JP2004221583A - 平衡積層構造(balancedlamination)を利用したフレックス(flex)・ベースのICパッケージ構造 - Google Patents
平衡積層構造(balancedlamination)を利用したフレックス(flex)・ベースのICパッケージ構造 Download PDFInfo
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Abstract
【解決手段】このパッケージは、2つの金属層のバンプ回路と、バンプ回路の第1面上である厚さを有する第1粘着層と、ある厚さを有し、第1粘着層に接合する第1外部導電層と、バンプ回路の第2面上で第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層とを含む。本発明は、第1外部導電層の厚さとほぼ同じ厚さを有し、第2粘着層に接合する第2外部導電層も含む。
【選択図】図6
Description
前記バンプ回路の第1面上である厚さを有する第1粘着層と、
ある厚さを有し、前記第1粘着層に接合する第1外部導電層と、
前記バンプ回路の第2面上で前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層と、
前記第1外部導電層の厚さとほぼ同じ厚さを有し、前記第2粘着層に接合する第2外部導電層とを備える、集積回路パッケージ。
(2)各外部導電層の厚さが、約25ミクロン〜300ミクロンである、上記(1)に記載の集積回路パッケージ。
(3)前記導電層が銅を含む、上記(1)に記載の集積回路パッケージ。
(4)少なくとも1つの前記第1および第2外部導電層が、それを貫通して画定され、集積回路のダイを受けるウィンドウを有する、上記(1)に記載の集積回路パッケージ。
(5)前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、上記(4)に記載の集積回路パッケージ。
(6)第1面の中央部分上に、複数のz次元バイアを有する2つの金属層のバンプ回路であって、前記バイアがそれぞれ、前記バイアのそれぞれの面上に、対向する集積回路のダイを相互接続する突出したz次元相互接続バンプを有するバンプ回路と、
前記バンプ回路の前記第1面上である厚さを有する第1粘着層と、
ある厚さを有し、前記第1粘着層に接合する第1外部導電層と、
前記バンプ回路の第2面上で前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層とを備える、集積回路パッケージ。
(7)各外部導電層の厚さが、約25ミクロン〜300ミクロンである、上記(6)に記載の集積回路パッケージ。
(8)前記導電層が銅を含む、上記(6)に記載の集積回路パッケージ。
(9)少なくとも1つの前記第1および第2外部導電層が、それを貫通して画定され、集積回路のダイを受けるウィンドウを有する、上記(6)に記載の集積回路パッケージ。
(10)前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、上記(9)に記載の集積回路パッケージ。
(11)前記第1外部導電層が、それを貫通して画定され、第1集積回路のダイを受ける第1ウィンドウを有し、前記第2外部導電層が、それを貫通して画定され、第2集積回路のダイを受ける第2ウィンドウを有し、
前記第1粘着層が、その中に画定され、前記第1ウィンドウの下に配設された、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティを備え、
前記第2外部導電層が、それを貫通して画定され、第2集積回路のダイを受ける第2ウィンドウを有し、
前記第2粘着層が、その中に画定され、前記第2ウィンドウの下に配設された、前記バンプ回路の前記第2面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第2キャビティを備える、上記(6)に記載の集積回路パッケージ。
(12)各外部導電層の厚さが、約25ミクロン〜300ミクロンである、上記(11)に記載の集積回路パッケージ。
(13)前記導電層が銅を含む、上記(11)に記載の集積回路パッケージ。
(14)少なくとも1つの前記第1および第2ウィンドウが、境界と、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイとを有する、上記(11)に記載の集積回路パッケージ。
(15)対向する第1および第2集積回路のダイをパッケージし、それらを、第1面の中央部分上で、それぞれの面上に対向する集積回路のダイを相互接続する突出したz次元相互接続バンプを有する複数のz次元バイアを含むインターポーザ型バンプ回路に電気的に相互接続する方法であって、
前記バンプ回路の前記第1面上に、ある厚さを有する第1粘着層を配置するステップと、
前記バンプ回路の第2面上に、前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層を配置するステップと、
前記第1粘着層に、ある厚さを有する第1外部導電層を接合するステップと、
前記第2粘着層に、前記第1外部導電層の厚さとほぼ同じ厚さを有する第2外部導電層を接合するステップと、
前記第1集積回路のダイを受けるために、前記第1外部導電層を貫通して第1ウィンドウをエッチングするステップと、
前記第2集積回路のダイを受けるために、前記第2外部導電層を貫通して第2ウィンドウをエッチングするステップと、
前記第1ウィンドウの下の前記第1粘着層中に、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティをエッチングするステップと、前記第1ウィンドウの下の前記第1粘着層中に、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティをエッチングするステップと、
前記第1および第2集積回路のダイのC4部位上または前記第1および第2集積回路のダイにそれぞれ対向する前記バンプ回路の前記中央部分の前記突出した相互接続バンプ上あるいはその両方の上に導電ペーストまたはハンダを被着させるステップと、
前記第1ウィンドウ中および前記突出した相互接続バンプ上に前記第1集積回路のダイを配置するステップと、
前記第2ウィンドウ中および前記突出した相互接続バンプ上に前記第2集積回路のダイを配置するステップと含む、方法。
(16)各外部導電層の厚さが、約25ミクロン〜300ミクロンである、上記(15)に記載の方法。
(17)前記導電層が銅を含む、上記(15)に記載の方法。
(18)少なくとも1つの前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、上記(15)に記載の方法。
2 中間絶縁基板
3a、3b バンプ回路層
5 ハンダ、導電ペースト
6 突出バンプ
12 バイア
13a、13b 外部導電層
14a、14b 絶縁粘着層
16 上面
25a、25b チップ・ダイ
34a、34b チップ・ウィンドウ
59 露光領域
75 キャビティ
77 フォトレジスト
78 スティフナ
81、82 アンダーフィル
83 チップ
85、86 フィレット
87 インターポーザ
Claims (18)
- 2つの金属層のバンプ回路と、
前記バンプ回路の第1面上である厚さを有する第1粘着層と、
ある厚さを有し、前記第1粘着層に接合する第1外部導電層と、
前記バンプ回路の第2面上で前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層と、
前記第1外部導電層の厚さとほぼ同じ厚さを有し、前記第2粘着層に接合する第2外部導電層とを備える、集積回路パッケージ。 - 各外部導電層の厚さが、約25ミクロン〜300ミクロンである、請求項1に記載の集積回路パッケージ。
- 前記導電層が銅を含む、請求項1に記載の集積回路パッケージ。
- 少なくとも1つの前記第1および第2外部導電層が、それを貫通して画定され、集積回路のダイを受けるウィンドウを有する、請求項1に記載の集積回路パッケージ。
- 前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、請求項4に記載の集積回路パッケージ。
- 第1面の中央部分上に、複数のz次元バイアを有する2つの金属層のバンプ回路であって、前記バイアがそれぞれ、前記バイアのそれぞれの面上に、対向する集積回路のダイを相互接続する突出したz次元相互接続バンプを有するバンプ回路と、
前記バンプ回路の前記第1面上である厚さを有する第1粘着層と、
ある厚さを有し、前記第1粘着層に接合する第1外部導電層と、
前記バンプ回路の第2面上で前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層とを備える、集積回路パッケージ。 - 各外部導電層の厚さが、約25ミクロン〜300ミクロンである、請求項6に記載の集積回路パッケージ。
- 前記導電層が銅を含む、請求項6に記載の集積回路パッケージ。
- 少なくとも1つの前記第1および第2外部導電層が、それを貫通して画定され、集積回路のダイを受けるウィンドウを有する、請求項6に記載の集積回路パッケージ。
- 前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、請求項9に記載の集積回路パッケージ。
- 前記第1外部導電層が、それを貫通して画定され、第1集積回路のダイを受ける第1ウィンドウを有し、前記第2外部導電層が、それを貫通して画定され、第2集積回路のダイを受ける第2ウィンドウを有し、
前記第1粘着層が、その中に画定され、前記第1ウィンドウの下に配設された、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティを備え、
前記第2外部導電層が、それを貫通して画定され、第2集積回路のダイを受ける第2ウィンドウを有し、
前記第2粘着層が、その中に画定され、前記第2ウィンドウの下に配設された、前記バンプ回路の前記第2面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第2キャビティを備える、請求項6に記載の集積回路パッケージ。 - 各外部導電層の厚さが、約25ミクロン〜300ミクロンである、請求項11に記載の集積回路パッケージ。
- 前記導電層が銅を含む、請求項11に記載の集積回路パッケージ。
- 少なくとも1つの前記第1および第2ウィンドウが、境界と、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイとを有する、請求項11に記載の集積回路パッケージ。
- 対向する第1および第2集積回路のダイをパッケージし、それらを、第1面の中央部分上で、それぞれの面上に対向する集積回路のダイを相互接続する突出したz次元相互接続バンプを有する複数のz次元バイアを含むインターポーザ型バンプ回路に電気的に相互接続する方法であって、
前記バンプ回路の前記第1面上に、ある厚さを有する第1粘着層を配置するステップと、
前記バンプ回路の第2面上に、前記第1粘着層の厚さとほぼ同じ厚さを有する第2粘着層を配置するステップと、
前記第1粘着層に、ある厚さを有する第1外部導電層を接合するステップと、
前記第2粘着層に、前記第1外部導電層の厚さとほぼ同じ厚さを有する第2外部導電層を接合するステップと、
前記第1集積回路のダイを受けるために、前記第1外部導電層を貫通して第1ウィンドウをエッチングするステップと、
前記第2集積回路のダイを受けるために、前記第2外部導電層を貫通して第2ウィンドウをエッチングするステップと、
前記第1ウィンドウの下の前記第1粘着層中に、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティをエッチングするステップと、前記第1ウィンドウの下の前記第1粘着層中に、前記バンプ回路の前記第1面上の前記相互接続バンプの上部部分を露出させるのに十分な深さを有する第1キャビティをエッチングするステップと、
前記第1および第2集積回路のダイのC4部位上または前記第1および第2集積回路のダイにそれぞれ対向する前記バンプ回路の前記中央部分の前記突出した相互接続バンプ上あるいはその両方の上に導電ペーストまたはハンダを被着させるステップと、
前記第1ウィンドウ中および前記突出した相互接続バンプ上に前記第1集積回路のダイを配置するステップと、
前記第2ウィンドウ中および前記突出した相互接続バンプ上に前記第2集積回路のダイを配置するステップと含む、方法。 - 各外部導電層の厚さが、約25ミクロン〜300ミクロンである、請求項15に記載の方法。
- 前記導電層が銅を含む、請求項15に記載の方法。
- 少なくとも1つの前記ウィンドウが境界を有し、前記境界から約0.5mmよりも近接して位置する縁部を有する集積回路のダイをさらに備える、請求項15に記載の方法。
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