JP7323101B2 - 電気めっきされたダイ取り付けを備える半導体デバイス - Google Patents
電気めっきされたダイ取り付けを備える半導体デバイス Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 84
- 239000002184 metal Substances 0.000 claims description 122
- 229910052751 metal Inorganic materials 0.000 claims description 122
- 239000010410 layer Substances 0.000 claims description 91
- 239000000758 substrate Substances 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 50
- 238000009713 electroplating Methods 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000002243 precursor Substances 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 230000008569 process Effects 0.000 description 34
- 239000000243 solution Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 241000272168 Laridae Species 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- -1 copper alloys Chemical compound 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- JVPLOXQKFGYFMN-UHFFFAOYSA-N gold tin Chemical compound [Sn].[Au] JVPLOXQKFGYFMN-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Description
Claims (20)
- 半導体ダイ取り付けの方法であって、
第1の繰り返しパターンの窪みを有する誘電体カバーと、前記第1の繰り返しパターンに整合する位置を有する第2の繰り返しパターンを含む金属基板とを提供することであって、前記第2の繰り返しパターンが、前記窪みに位置整合する外側リングを有する中央の複数のスルーホールアパーチャを含み、前記スルーホールアパーチャの周囲の複数の隆起トレースが、前記金属基板上の誘電体ベース層上の金属層を含む、前記提供すること、
前記外側リングにのるように、裏側金属(BSM)層頂部側を有する半導体ダイを前記複数のスルーホールアパーチャのそれぞれに挿入すること、
複数のスタックを形成するため、前記誘電体カバーを前記半導体ダイの上に配置すること、
前記誘電体カバーと前記金属基板との間の周囲に沿ってシーリングすること、
前記スタックを溶液容器内の金属電気めっき溶液に浸すことであって、前記金属基板が電力供給の負端子に接続されており、前記金属基板とは離間される導電性構造が前記電力供給の正の端子に接続されている、前記浸すこと、及び
ダイ取り付けを提供するため、前記BSM層と、前記アパーチャを区切る前記金属基板の壁との間の容積を充填するため、電気めっきされた単一金属層を堆積させるように電解めっきすること、
を含む、方法。 - 請求項1に記載の方法であって、前記金属電気めっき溶液が銅電気めっき溶液を含む、方法。
- 請求項1に記載の方法であって、前記誘電体ベース層がポリイミドを含む、方法。
- 請求項1に記載の方法であって、前記BSM層、前記金属基板、及び前記単一金属層がすべて銅を含む、方法。
- 請求項1に記載の方法であって、前記金属基板が、複数の前記金属基板を含む基板シートの一部であり、前記方法が更に、
前記複数の隆起トレースと前記半導体ダイ上のボンドパッドとの間にボンドワイヤを配置すること、
前記配置した後、第1のパッケージ化された半導体デバイス前駆物質を含む複数のパッケージ化された半導体デバイス前駆物質を形成するために前記基板シートを個片化すること、
前記複数の隆起トレース上の前記金属層に接し、前記金属基板を越えて延在する末端部を含む、少なくとも1つの屈曲部を備えるリードを追加すること、及び
第1のパッケージ化された半導体デバイスを形成するために封止を追加するためのモールド化合物を形成するようモールディングすること、
を含む、方法。 - 請求項1に記載の方法であって、前記電気めっきされた単一金属層が20μm~100μmの厚みである、方法。
- 請求項1に記載の方法であって、前記誘電体カバーがプラスチックを含む、方法。
- 請求項1に記載の方法であって、前記電気めっきが15℃~30℃の温度で行われる、方法。
- 請求項1に記載の方法であって、前記シーリングすることが、前記誘電体カバーと前記金属基板との間の前記周囲に沿ってテープを配置することを含む、方法。
- 請求項1に記載の方法であって、前記電気めっきすることが直流電気めっきすることを含む、方法。
- 請求項1に記載の方法であって、前記電気めっきすることがパルス電気めっきすることを含む、方法。
- パッケージ化された半導体デバイスであって、
中央アパーチャを有する金属基板であって、誘電体ベース層上の金属層を含む前記中央アパーチャの周囲に複数の隆起トレースを備える、前記金属基板、
前記アパーチャの頂部上に頂部側を上に取り付けられた裏側金属(BSM)層を有する半導体ダイ、
前記アパーチャの底部部分を充填するダイ取り付けを提供するために、前記BSM層と前記中央アパーチャを区切る前記金属基板の壁との間に直接にある単一の金属層、
前記複数のトレース上の前記金属層に接する少なくとも1つの屈曲部を有し、前記金属基板を越えて延在する末端部を含む、リード、
前記複数のトレースと前記半導体ダイ上のボンドパッドとの間のボンドワイヤ、及び
封止を提供するモールド化合物、
を含む、パッケージ化された半導体デバイス。 - 請求項12に記載のパッケージ化された半導体デバイスであって、前記誘電体ベース層がポリイミドを含む、パッケージ化された半導体デバイス。
- 請求項12に記載のパッケージ化された半導体デバイスであって、前記BSM層、前記金属基板、及び前記単一金属層がすべて銅を含む、パッケージ化された半導体デバイス。
- 請求項12に記載のパッケージ化された半導体デバイスであって、前記単一金属層が20~100μmの厚みである、パッケージ化された半導体デバイス。
- 請求項12に記載のパッケージ化された半導体デバイスであって、前記金属基板が0.1mmから0.3mmの厚みである、パッケージ化された半導体デバイス。
- 請求項12に記載のパッケージ化された半導体デバイスであって、前記単一金属層が電気めっきされた金属層である、パッケージ化された半導体デバイス。
- パッケージ化された半導体デバイスであって、
中央アパーチャを有する基板を含む銅であって、前記中央アパーチャの周りの複数の隆起したトレースが、誘電体ベース層上の金属層を含む、銅、
前記アパーチャの頂部上に頂部側を上に取り付けられた裏側金属(BSM)層を有する半導体ダイ、
前記アパーチャの底部部分を充填するダイ取り付けを提供するため、前記BSM層と、前記中央アパーチャを境界とする基板を含む前記銅の壁との直接的な間の単一の銅層、
前記複数のトレース上の前記金属層に接する少なくとも1つの屈曲部を有し、前記基板を含む前記銅を越えて延在する末端部を含むリード、
前記複数のトレースと前記半導体ダイ上のボンドパッドとのボンドワイヤ、及び
封止を提供するモールド化合物、
を含む、パッケージ化された半導体デバイス。 - 請求項18に記載のパッケージ化された半導体デバイスであって、前記BSM層が銅を含む、パッケージ化された半導体デバイス。
- 請求項18に記載のパッケージ化された半導体デバイスであって、前記単一銅層の厚みが20~100μmである、パッケージ化された半導体デバイス。
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