JP7384918B2 - 側壁メッキ層を有する半導体パッケージ - Google Patents
側壁メッキ層を有する半導体パッケージ Download PDFInfo
- Publication number
- JP7384918B2 JP7384918B2 JP2021551936A JP2021551936A JP7384918B2 JP 7384918 B2 JP7384918 B2 JP 7384918B2 JP 2021551936 A JP2021551936 A JP 2021551936A JP 2021551936 A JP2021551936 A JP 2021551936A JP 7384918 B2 JP7384918 B2 JP 7384918B2
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- Prior art keywords
- lead
- plating
- die
- package
- bar
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- 238000007747 plating Methods 0.000 title claims description 82
- 239000004065 semiconductor Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 claims description 49
- 238000009713 electroplating Methods 0.000 claims description 22
- 238000005538 encapsulation Methods 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 3
- 238000005520 cutting process Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 239000008393 encapsulating agent Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 229910000679 solder Inorganic materials 0.000 description 7
- 238000007689 inspection Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- WABPQHHGFIMREM-RNFDNDRNSA-N lead-211 Chemical compound [211Pb] WABPQHHGFIMREM-RNFDNDRNSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H01L2924/00012—Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/00014—Technical content checked by a classifier the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Lead Frames For Integrated Circuits (AREA)
Description
102 工程
104 工程
106 工程
150 方法
152 工程
154 工程
156 工程
158 工程
200 パッケージアセンブリ
202 封入材/成形封入部
203 メッキバー
204 リード部
205 リードフレームアセンブリ
206 ダイパドル
209 非ウェッタブル側部
210 パッケージ
211 ソースリード部
213 ゲートリード部
215 タイバー
217 タイバー
219 タイバー
220 側壁
301 カッター
312 ステップカットウェッタブルフランク
402 ステップカットウェッタブルフランク、ダイ
404 ダイ、ワイヤボンド
500 電気メッキ装置
502 溶液
504 電源
506 メッキ材
508 メッキ材
Claims (19)
- 半導体パッケージを製造する方法において、
第1方向に伸延した一方のメッキバーと、同じく第1方向に伸延した他方のメッキバーとがあって、これらのメッキバーを互いに離して間を開けて配置した第1セットのメッキバー、
前記第1方向と直交する第2方向に伸延した一方のメッキバーと、同じく第2方向に伸延した他方のメッキバーとがあって、これらのメッキバーを互いに離して間を開けて配置した第2セットのメッキバー、
を構成する複数のメッキバーがあって、
各ダイパッケージが集積回路ダイおよび複数のリード部を有しており、この複数のダイパッケージが列状に配列されて、底面を有した前記複数のダイパッケージの各ダイパッケージが第1縁、この第1縁に対向する第2縁、第3縁及びこの第3縁に対向する第4縁を有し、そして、前記複数のダイパッケージのそれぞれの前記ダイパッケージが、前記ダイパッケージの前記第1縁に隣接する前記第1セットの一方のメッキバーと、前記ダイパッケージの前記第2縁に隣接する前記第1セットの他方のメッキバーとの間に位置して、電気的結合を有してそれらのメッキバーに取り付けられており、さらに、前記複数のダイパッケージのそれぞれの前記ダイパッケージが、前記ダイパッケージの前記第3縁に隣接する前記第2セットの一方のメッキバーと、前記ダイパッケージの前記第4縁に隣接する前記第2セットの他方のメッキバーとの間に位置して、電気的結合を有してこれらのメッキバーに取り付けられており、
そこで、前記複数のダイパッケージのそれぞれの前記ダイパッケージは、単一の第1タイバーを介して前記ダイパッケージの前記第1縁に隣接する前記第1セットの一方のメッキバーに電気的結合するダイパドルであって、単一の第2タイバーを介して前記ダイパッケージの前記第2縁に隣接する前記第1セットの他方のメッキバーに電気的結合する前記ダイパドルを備え、そしてさらに、前記ダイパドルに電気的結合すると共に前記ダイパドルから伸びた少なくともいくつかの複数のリード部を設け、この複数のリード部のそれぞれが側壁と底面とを有しており、その上さらに、前記ダイパドルから離れて隙間を設けて配置した前記複数のリード部の少なくとも一つが、単一の第3タイバーを介して、前記ダイパッケージの前記第2縁に隣接するメッキバーである前記第1セットのメッキバーに電気的結合しており、
前記ダイパドルと前記複数のリード部とを備えたリードフレームアセンブリを用意して、
前記複数のリード部の底面、前記ダイパドルの底面、前記リードフレームアセンブリ、およびパッケージアセンブリを形成する成形封入部を露出させた状態で前記リードフレームアセンブリの少なくとも一部を成形封入部に封入して、
前記パッケージアセンブリの前記第2セットのメッキバーを完全に貫通するが、前記パッケージアセンブリの前記成形封入部に対しては、これを部分的に貫通する第1の一連の平行カットを形成して、前記複数のリード部の側壁の表面に露出部を形成して、
前記複数のリード部の前記側壁の表面の前記露出部の少なくとも一部を電気メッキして、
前記第1の一連の平行カットの幅よりも小さなカット幅で前記第1の一連の平行カットに整合する第2の一連の平行カットを行って、前記成形封入部を完全に貫通させてステップカットウェッタブル側部を形成し、そして
前記第1の一連の平行カットおよび前記第2の一連の平行カットに対して直交方向に向けて、前記成形封入部および前記第1セットのメッキバーを完全に貫通して第3の一連の平行カットを形成することを特徴とする半導体パッケージを製造する方法。
- 前記複数のリード部の第1リードセットの組が、前記複数のダイパッケージの各ダイパッケージの第3縁に隣接して位置付けされて、前記複数のリード部の第2リードセットの組が、前記複数のダイパッケージの各ダイパッケージの第4縁に隣接して位置付けされる請求項1に記載の方法。
- 前記第1リードセットの側壁が、各ダイパッケージの前記第3縁に隣接する前記第2セットの一方のメッキバーの各メッキバーに対面して互いに整合しており、そして、前記第2リードセットの側壁が、各ダイパッケージの前記第4縁に隣接する前記第2セットの他方のメッキバーの各メッキバーに対面して互いに整合する請求項2に記載の方法。
- 前記ダイパドルから離れて間を設けてある前記複数のリード部の少なくとも一つのリード部がゲートリード部である請求項1に記載の方法。
- 前記複数のリード部の少なくとも一つのリード部がソースリード部であり、このソースリード部は前記ダイパドルおよび前記ゲートリード部から離れて間を設けて配置してあり、そして、前記ソースリード部は、単一の第4タイバーを介して前記ゲートリード部に供するメッキバーと同じメッキバーに電気的結合する請求項4に記載の方法。
- 前記第2タイバーが前記ゲートリード部と前記ソースリード部との間に伸ばす請求項5に記載の方法。
- 前記ダイパドルの露出した前記底面を電気メッキして、前記複数のリード部の露出した前記底面を電気メッキする請求項1に記載の方法。
- 前記複数のダイパッケージの前記した各ダイパッケージの前記第1縁および前記複数のダイパッケージの前記した各ダイパッケージの前記第2縁が、電解メッキでない請求項1に記載の方法。
- 前記第1タイバーが前記第2タイバーの差渡し長さよりも大きな差渡し長さを有する請求項1に記載の方法。
- 半導体パッケージを製造する方法において、
ダイパドルおよび複数のリード部を有し、前記ダイパドルおよび前記リード部が底面を有し、それぞれの前記リード部が側壁を有し、前記リード部の少なくともいくつかは前記ダイパドルから伸延しかつ前記ダイパドルに電気的結合しており、前記複数のリード部の少なくとも一つのリード部は前記ダイパドルから離れて隙間を設けて配置されており、
第1方向に延びたメッキバーのそれぞれが互いに離れて配置された前記メッキバーの第1セットおよび前記第1方向に直交する第2方向に延びたメッキバーのそれぞれが互いに離れて配置された前記メッキバーの第2セットを構成する複数のメッキバーがあって、ダイパッケージを囲い且つ前記ダイパッケージに電気的結合して取り付けた前記複数のメッキバーを提供し、
単一の第1タイバーを介してメッキバーの前記第1セットの前記複数のメッキバーの一つに前記ダイパドルの第1縁を電気的結合し、
単一の第2タイバーを介してメッキバーの前記第1セットの前記複数のメッキバーの別の一つに前記ダイパドルの対向側の第2縁を電気的結合し、
メッキバーの前記第1セットの前記複数のメッキバーの一つに、前記ダイパドルから離れて間を設けて配置された前記複数のリード部の少なくとも一つのリード部を、単一の第3タイバーを介して電気的結合し、
前記複数のリード部の前記底面および前記ダイパドルの前記底面を露出させた状態で、前記ダイパッケージの少なくとも一部と前記複数のメッキバーの少なくとも一部とを成形封入部で封入し、
前記複数のメッキバーの前記第2セットのメッキバーを貫通して、且つ前記成形封入部を部分的に貫通させて、前記複数のリード部の側壁の表面の一部を露出部にするための第1の一連の平行カットを行い、
前記複数のリード部の前記側壁の表面の前記露出部の少なくとも一部を電気メッキして、
前記第1の一連の平行カットの幅よりも小さなカット幅で前記第1の一連の平行カットに整合する第2の一連の平行カットを行って、前記成形封入部を完全に貫通させてステップカットウェッタブル側部を形成し、そして
前記第1の一連の平行カットおよび前記第2の一連の平行カットに対して直交方向に向けて、前記成形封入部および前記複数のメッキバーのうち前記第1セットの前記メッキバーを完全に貫通する第3の一連の平行カットを行うことを特徴とする半導体パッケージを製造する方法。
- 前記ダイパドルから離れて間を設けて配置された前記複数のリード部の少なくとも一つのリード部がゲートリード部である請求項10に記載の方法。
- 前記複数のリード部の少なくとも一つのリード部がソースリード部であり、このソースリード部は前記ダイパドルおよび前記ゲートリード部から離れて間を設けて配置してあり、そして、前記ソースリード部は、単一の第4タイバーを介して前記ゲートリード部に接続させるメッキバーと同じメッキバーに電気的結合する請求項11に記載の方法。
- 前記第2タイバーが前記ゲートリード部と前記ソースリード部との間に伸ばされる請求項12に記載の方法。
- 前記ダイパッケージの前記第1縁および前記ダイパッケージの前記第2縁が、電解メッキでない請求項10に記載の方法。
- 前記第1タイバーが前記第2タイバーの差渡し長さよりも大きな差渡し長さを有する請求項10に記載の方法。
- 前記複数のリード部の第1リードセットの組が、間を設けて配置する前記メッキバーの前記第2セットの一つのメッキバーに隣接して位置付けられており、そして、前記複数のリード部の前記第1リードセットの組に対向する第2リードセットの組が、前記メッキバーの前記第2セットの別の一つのメッキバーに隣接して位置付けられている請求項10に記載の方法。
- 前記第1リードセットの側壁が前記第2セットのメッキバーの一方のメッキバーに対面して互いに整合して、そして、前記第2リードセットの側壁が前記第2セットのメッキバーの他方のメッキバーに対面して互いに整合する請求項16に記載の方法。
- 前記リード部は銅に電気メッキを用いて錫メッキされる請求項10に記載の方法。
- 請求項10に記載の方法にしたがって製造されたリード端子レス型デュアル・フラットパック半導体パッケージ(DFN)。
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US20230420340A1 (en) * | 2022-06-28 | 2023-12-28 | Alpha And Omega Semiconductor International Lp | Semiconductor package having wettable lead flanks and tie bars and method of making the same |
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