JP6377981B2 - 電子装置 - Google Patents
電子装置 Download PDFInfo
- Publication number
- JP6377981B2 JP6377981B2 JP2014143164A JP2014143164A JP6377981B2 JP 6377981 B2 JP6377981 B2 JP 6377981B2 JP 2014143164 A JP2014143164 A JP 2014143164A JP 2014143164 A JP2014143164 A JP 2014143164A JP 6377981 B2 JP6377981 B2 JP 6377981B2
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- Prior art keywords
- layer
- wire
- bonding pad
- electronic device
- bonding
- Prior art date
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- 239000004065 semiconductor Substances 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 41
- 239000011241 protective layer Substances 0.000 claims description 38
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- 239000011347 resin Substances 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 33
- 238000002161 passivation Methods 0.000 claims description 31
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 229910052737 gold Inorganic materials 0.000 claims description 8
- 239000010408 film Substances 0.000 description 62
- 229910052751 metal Inorganic materials 0.000 description 35
- 239000002184 metal Substances 0.000 description 35
- 230000002093 peripheral effect Effects 0.000 description 34
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- 238000010586 diagram Methods 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
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- 238000005304 joining Methods 0.000 description 4
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- 239000000463 material Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910018565 CuAl Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
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- 230000002250 progressing effect Effects 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Wire Bonding (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
図1〜図20を用いて、本発明の第1実施形態について説明する。
図22を用いて、本発明の第2実施形態について説明する。
図23、図24を用いて、本発明の第3実施形態について説明する。
図25、図26を用いて、本発明の第4実施形態について説明する。
11 半導体基板
13 第1導電層
131 ボンディングパッド
131A パッド表面
131B パッド裏面
131E 延出部
131M 金属薄膜層
131R 接合領域
131α 第1ボンディングパッド
131β 第2ボンディングパッド
133 配線メタル
139 クラック
14 第2導電層
141 緩衝部
141A 緩衝部表面
141B 緩衝部裏面
141C 周縁
143 配線部分
15 第3導電層
151 第1配線部位
153 第2配線部位
16 第4導電層
161 第1配線膜
163 第2配線膜
165 第3配線膜
170 支持ビア
171 第1ビア
172 第2ビア
173 第3ビア
174 第4ビア
177 連絡部
18 絶縁層
19 保護層
191 パッシベーション膜
191A SiN層
191B SiO2層
193 ポリイミド層
19A 開口
19Aa 内縁
21 Pd層
211 表面
22 Ni層
221 表面
23 Cu層
231 表面
29 Al層
3 ワイヤ
31 ボンディング部分
311 底面
312 側面
312A 第1曲面部
312B 第2曲面部
313A 境界
313B 境界
314 被押し付け面
314A 第1部分
314B 第2部分
314C 屈曲部
316 周面
319 ボール
33 ボンディング部位
35 橋絡部
39 混入金属
5 リードフレーム
51 主電極
52 副電極
521 Cu部
521A Cu部
522 Ag層
522A Ag層
7 封止樹脂
8 キャピラリ
81 ホール内面
82 押し付け部
821 第1押し付け領域
822 第2押し付け領域
A10,A11,A12,A13 電子装置
L1 ボール径
L2,L3,L4 直径
L5,L6,L7 最大高低差
Z 厚さ方向
Claims (19)
- 電子素子と、
前記電子素子にボンディングされたワイヤと、を備え、
前記電子素子は、前記ワイヤがボンディングされたボンディングパッドを含み、
前記ボンディングパッドは、Pd層を含み、
前記Pd層は、前記ワイヤに直接接しており、
前記Pd層の表面の最大高低差は、40nm以下である、電子装置。 - 前記Pd層の表面には、前記ワイヤが直接接している、請求項1に記載の電子装置。
- 前記Pd層の表面の最大高低差は、30nm以下である、請求項1ないし請求項2のいずれかに記載の電子装置。
- 前記Pd層の表面の最大高低差は、20nm以下である、請求項1ないし請求項3のいずれかに記載の電子装置。
- 前記Pd層の表面の最大高低差は、10nm以下である、請求項1ないし請求項4のいずれかに記載の電子装置。
- 前記Pd層の厚さは、0.1〜1μmである、請求項1ないし請求項5のいずれかに記載の電子装置。
- 電子素子と、
前記電子素子にボンディングされたワイヤと、を備え、
前記電子素子は、前記ワイヤがボンディングされたボンディングパッドを含み、
前記ボンディングパッドは、Pd層を含み、
前記Pd層は、前記ワイヤに直接接しており、
前記ボンディングパッドは、Ni層を更に備え、
前記Pd層は、前記ワイヤおよび前記Ni層の間に位置しており、
前記Ni層の表面は、前記Pd層に接しており、且つ、最大高低差が40nm以下である、電子装置。 - 前記Pd層の表面の最大高低差は、40nm以下である、請求項7に記載の電子装置。
- 前記Ni層の厚さは、1〜5μmである、請求項7に記載の電子装置。
- 前記ボンディングパッドは、Cu層を更に備え、
前記Ni層は、前記Pd層および前記Cu層の間に位置しており、
前記Cu層の表面は、前記Ni層に接しており、且つ、最大高低差が40nm以下である、請求項7ないし請求項9のいずれかに記載の電子装置。 - 前記Cu層の厚さは、2〜12μmである、請求項10に記載の電子装置。
- 前記電子素子および前記ワイヤを封止する封止樹脂を更に備える、請求項1ないし請求項11のいずれかに記載の電子装置。
- 前記電子素子は、半導体素子を有する半導体基板を含む、請求項12に記載の電子装置。
- 前記半導体基板は、Siよりなる、請求項13に記載の電子装置。
- 前記ワイヤはCu、Au、あるいは、Agよりなる、請求項1ないし請求項14のいずれかに記載の電子装置。
- 前記電子素子は、絶縁性の保護層を含み、
前記保護層は、前記ボンディングパッドを露出させている、請求項1ないし請求項15のいずれかに記載の電子装置。 - 前記保護層には、開口が形成されており、
前記開口からは、前記ボンディングパッドが露出している、請求項16に記載の電子装置。 - 前記保護層は、パッシベーション膜を有し、
前記パッシベーション膜は、SiNおよびSiO2の少なくともいずれかよりなる、請求項16または請求項17に記載の電子装置。 - 前記パッシベーション膜は、互いに積層されたSiN層およびSiO2層を有する、請求項18に記載の電子装置。
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