JPWO2020166512A1 - 半導体装置、および、半導体装置の製造方法 - Google Patents
半導体装置、および、半導体装置の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 194
- 238000004519 manufacturing process Methods 0.000 title claims description 56
- 238000000034 method Methods 0.000 title claims description 47
- 238000007747 plating Methods 0.000 claims abstract description 256
- 229920005989 resin Polymers 0.000 claims abstract description 139
- 239000011347 resin Substances 0.000 claims abstract description 139
- 238000007789 sealing Methods 0.000 claims abstract description 81
- 238000005520 cutting process Methods 0.000 claims description 75
- 239000000463 material Substances 0.000 claims description 22
- 229910000679 solder Inorganic materials 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000005530 etching Methods 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 9
- 238000011179 visual inspection Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910020836 Sn-Ag Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910020988 Sn—Ag Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- WABPQHHGFIMREM-AKLPVKDBSA-N lead-210 Chemical compound [210Pb] WABPQHHGFIMREM-AKLPVKDBSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
Description
厚さ方向において互いに反対側を向く第1主面および第1裏面と、前記第1裏面から前記第1主面側に凹む第1凹部と、を有する第1リードと、
前記第1主面に搭載された半導体素子と、
前記半導体素子を覆う封止樹脂部と、
前記第1主面および前記第1裏面に接して形成された第1めっき層と、
第2めっき層と、
を備え、
前記第1凹部は、前記封止樹脂部から露出し、
前記第1めっき層は、前記第1裏面を覆う第1部を有し、
前記第2めっき層は、前記第1凹部および前記第1部に接して形成されている、半導体装置。
付記2.
前記第1めっき層は、前記第1凹部の形成に伴うバリの発生を抑制する、付記1に記載の半導体装置。
付記3.
前記第1めっき層は、Niを含み且つ前記第1リードに接する第1層を備える、付記1または2に記載の半導体装置。
付記4.
前記第1めっき層は、Auを含み且つ前記第2めっき層に接する第2層を備える、付記3に記載の半導体装置。
付記5.
前記第1めっき層は、Pdを含み且つ前記第1層に接する第3層を備える、付記3または4に記載の半導体装置。
付記6.
前記第2めっき層は、前記第1リードよりはんだ濡れ性が高い材料からなる、付記1ないし5のいずれか1つに記載の半導体装置。
付記7.
前記第2めっき層はSnを含んでいる、付記1ないし6のいずれか1つに記載の半導体装置。
付記8.
前記第1リードは、Cuを含んでいる、付記1ないし7のいずれか1つに記載の半導体装置。
付記9.
前記第1リードは、前記第1裏面から前記第1主面側に凹み且つ前記封止樹脂部によって覆われている第2凹部を備える、付記1ないし8のいずれか1つに記載の半導体装置。
付記10.
前記第1リードから離間した第2リードと、ボンディングワイヤとをさらに備えており、
前記第2リードは、前記厚さ方向において互いに反対側を向く第2主面および第2裏面を有するとともに、前記第2裏面から前記第2主面側に凹む第1凹部が形成されており、
前記ボンディングワイヤは、前記半導体素子と前記第2主面とに接続されており、
前記第2リードの前記第1凹部は、前記封止樹脂部から露出し、
前記第1めっき層は、前記第2裏面を覆う第2部を有し、
前記第2めっき層は、前記第2リードの前記第1凹部および前記第2部に接して形成されている、付記1ないし9のいずれか1つに記載の半導体装置。
付記11.
前記第1めっき層は、前記第1リードより前記ボンディングワイヤとの接着性がよい材料からなる、付記10に記載の半導体装置。
付記12.
前記第2リードは、前記第2裏面から前記第2主面側に凹み且つ前記封止樹脂部によって覆われている第2凹部を備える、付記10または11に記載の半導体装置。
付記13.
厚さ方向において互いに反対側を向く主面および裏面を有するリードフレームを準備する準備工程と、
前記主面および前記裏面に第1めっき層を形成する第1めっき工程と、
前記主面に半導体素子を搭載する搭載工程と、
前記半導体素子を封止樹脂で覆う樹脂形成工程と、
前記リードフレームの前記裏面から、前記リードフレームの前記厚さ方向の途中まで切削を行うことで溝部を形成する溝部形成工程と、
前記裏面および前記溝部に第2めっき層を形成する第2めっき工程と、
前記溝部に沿って、前記厚さ方向視において前記溝部よりも幅が狭く且つそのすべてが前記溝部に重なる除去領域において前記リードフレームおよび前記封止樹脂を前記厚さ方向の全域において除去する切断工程と、
を備える、半導体装置の製造方法。
付記14.
前記溝部形成工程では、第1ブレードでのハーフカットダイシングにより前記溝部を形成し、
前記切断工程では、前記第1ブレードより薄い第2ブレードでのフルカットダイシングにより除去を行う、付記13に記載の半導体装置の製造方法。
付記15.
前記溝部形成工程では、前記厚さ方向に直交する第1方向に沿って延びる第1溝部と、前記第1溝部に直交する第2溝部とを形成する、付記13または14に記載の半導体装置の製造方法。
付記16.
前記切断工程は、前記第1溝部に沿う第1除去領域において除去を行う第1切断工程と、前記第2溝部に沿う第2除去領域において除去を行う第2切断工程とを備える、付記15に記載の半導体装置の製造方法。
1 :第1リード
110 :搭載部
111 :搭載部主面
112 :搭載部裏面
113 :搭載部凹部
120 :端子部
121 :端子部主面
122 :端子部裏面
123 :端子部端面
124 :端子部凹部
130 :連結部
131 :連結部主面
132 :連結部裏面
133 :連結部端面
2 :第2リード
210 :ワイヤボンディング部
211 :ワイヤボンディング部主面
212 :ワイヤボンディング部裏面
213 :ワイヤボンディング部凹部
220 :端子部
221 :端子部主面
222 :端子部裏面
223 :端子部端面
224 :端子部凹部
230 :連結部
231 :連結部主面
232 :連結部裏面
233 :連結部端面
3 :第3リード
310 :ワイヤボンディング部
311 :ワイヤボンディング部主面
312 :ワイヤボンディング部裏面
313 :ワイヤボンディング部凹部
320 :端子部
321 :端子部主面
322 :端子部裏面
323 :端子部端面
324 :端子部凹部
330 :連結部
331 :連結部主面
332 :連結部裏面
333 :連結部端面
41 :第1めっき層
411 :Niめっき層
412 :Pdめっき層
413 :Auめっき層
42 :第2めっき層
6 :半導体素子
60 :素子本体
61 :第1電極
62 :第2電極
63 :第3電極
71,72:ボンディングワイヤ
8 :封止樹脂部
81 :樹脂主面
82 :樹脂裏面
83 :樹脂第1側面
84 :樹脂第2側面
85,86:樹脂凹部
900 :リードフレーム
901 :主面
902 :裏面
903 :凹部
904 :溝部
904a :底面
904b :側面
905 :溝部
905a :底面
905b :側面
906 :貫通孔
911 :第1めっき層
912 :第2めっき層
920 :封止樹脂
951 :第1ブレード
952 :第2ブレード
970 :保護テープ
S1 :第1除去領域
S2 :第2除去領域
S3 :溝部形成領域
S4 :第2溝部形成領域
Claims (16)
- 厚さ方向において互いに反対側を向く第1主面および第1裏面と、前記第1裏面から前記第1主面側に凹む第1凹部と、を有する第1リードと、
前記第1主面に搭載された半導体素子と、
前記半導体素子を覆う封止樹脂部と、
前記第1主面および前記第1裏面に接して形成された第1めっき層と、
第2めっき層と、
を備え、
前記第1凹部は、前記封止樹脂部から露出し、
前記第1めっき層は、前記第1裏面を覆う第1部を有し、
前記第2めっき層は、前記第1凹部および前記第1部に接して形成されている、半導体装置。 - 前記第1めっき層は、前記第1凹部の形成に伴うバリの発生を抑制する、請求項1に記載の半導体装置。
- 前記第1めっき層は、Niを含み且つ前記第1リードに接する第1層を備える、請求項1または2に記載の半導体装置。
- 前記第1めっき層は、Auを含み且つ前記第2めっき層に接する第2層を備える、請求項3に記載の半導体装置。
- 前記第1めっき層は、Pdを含み且つ前記第1層に接する第3層を備える、請求項3または4に記載の半導体装置。
- 前記第2めっき層は、前記第1リードよりはんだ濡れ性が高い材料からなる、請求項1ないし5のいずれか1つに記載の半導体装置。
- 前記第2めっき層はSnを含んでいる、請求項1ないし6のいずれか1つに記載の半導体装置。
- 前記第1リードは、Cuを含んでいる、請求項1ないし7のいずれか1つに記載の半導体装置。
- 前記第1リードは、前記第1裏面から前記第1主面側に凹み且つ前記封止樹脂部によって覆われている第2凹部を備える、請求項1ないし8のいずれか1つに記載の半導体装置。
- 前記第1リードから離間した第2リードと、ボンディングワイヤとをさらに備えており、
前記第2リードは、前記厚さ方向において互いに反対側を向く第2主面および第2裏面を有するとともに、前記第2裏面から前記第2主面側に凹む第1凹部が形成されており、
前記ボンディングワイヤは、前記半導体素子と前記第2主面とに接続されており、
前記第2リードの前記第1凹部は、前記封止樹脂部から露出し、
前記第1めっき層は、前記第2裏面を覆う第2部を有し、
前記第2めっき層は、前記第2リードの前記第1凹部および前記第2部に接して形成されている、請求項1ないし9のいずれか1つに記載の半導体装置。 - 前記第1めっき層は、前記第1リードより前記ボンディングワイヤとの接着性がよい材料からなる、請求項10に記載の半導体装置。
- 前記第2リードは、前記第2裏面から前記第2主面側に凹み且つ前記封止樹脂によって覆われている第2凹部を備える、請求項10または11に記載の半導体装置。
- 厚さ方向において互いに反対側を向く主面および裏面を有するリードフレームを準備する準備工程と、
前記主面および前記裏面に第1めっき層を形成する第1めっき工程と、
前記主面に半導体素子を搭載する搭載工程と、
前記半導体素子を封止樹脂で覆う樹脂形成工程と、
前記リードフレームの前記裏面から、前記リードフレームの前記厚さ方向の途中まで切削を行うことで溝部を形成する溝部形成工程と、
前記裏面および前記溝部に第2めっき層を形成する第2めっき工程と、
前記溝部に沿って、前記厚さ方向視において前記溝部よりも幅が狭く且つそのすべてが前記溝部に重なる除去領域において前記リードフレームおよび前記封止樹脂を前記厚さ方向の全域において除去する切断工程と、
を備える、半導体装置の製造方法。 - 前記溝部形成工程では、第1ブレードでのハーフカットダイシングにより前記溝部を形成し、
前記切断工程では、前記第1ブレードより薄い第2ブレードでのフルカットダイシングにより除去を行う、請求項13に記載の半導体装置の製造方法。 - 前記溝部形成工程では、前記厚さ方向に直交する第1方向に沿って延びる第1溝部と、前記第1溝部に直交する第2溝部とを形成する、請求項13または14に記載の半導体装置の製造方法。
- 前記切断工程は、前記第1溝部に沿う第1除去領域において除去を行う第1切断工程と、前記第2溝部に沿う第2除去領域において除去を行う第2切断工程とを備える、請求項15に記載の半導体装置の製造方法。
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