JP2019013960A - 導電性ボール及び電子装置とそれらの製造方法 - Google Patents
導電性ボール及び電子装置とそれらの製造方法 Download PDFInfo
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- H10W72/221—Structures or relative sizes
- H10W72/222—Multilayered bumps, e.g. a coating on top and side surfaces of a bump core
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- H10W72/351—Materials of die-attach connectors
- H10W72/353—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics
- H10W72/354—Materials of die-attach connectors not comprising solid metals or solid metalloids, e.g. ceramics comprising polymers
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- H10W72/921—Structures or relative sizes of bond pads
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- H10W90/722—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bump connectors between stacked chips
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Abstract
Description
図5は実施形態の導電性ボールを示す図、図6は実施形態の導電性ボールの製造方法を示す図、図7〜図10は実施形態の電子装置を説明するための図である。
Claims (11)
- 銅ボールと、
前記銅ボールの外面を被覆するニッケル層と、
前記ニッケル層の外面を被覆する銅層と、
前記銅層の外面を被覆する錫系はんだと
を有し、
前記錫系はんだと前記銅層とを合計した重量に対する前記銅層の銅の重量が0.7wt%〜3wt%であることを特徴とする導電性ボール。 - 前記錫系はんだがリフロー加熱されて、前記錫系はんだに拡散する前記銅層の銅の濃度が0.7wt%〜3wt%であることを特徴とする請求項1に記載の導電性ボール。
- 前記錫系はんだは、錫/ビスマスはんだ、錫/銀はんだ、及び錫/ビスマス/ニッケルはんだのいずれかであることを特徴とする請求項1又は2に記載の導電性ボール。
- 第1接続パッドを備えた下側電子部材と、
前記下側電子部材の上に配置され、第2接続パッドを備えた上側電子部材と、
前記下側電子部材の第1接続パッドと前記上側電子部材の第2接続パッドとを接続する導電性ボールと
を有し、
前記導電性ボールは、
銅ボールと、
前記銅ボールの外面を被覆するニッケル層と、
前記銅層の外面を被覆する錫系はんだと
を有し、
前記ニッケル層と前記錫系はんだとの間に(Cu,Ni)6Sn5層が形成されていることを特徴とする電子装置。 - 前記第1接続パッド及び前記第2接続パッドの各表面はニッケル層又は銅層であり、
前記第1接続パッドと前記錫系はんだとの間、及び前記第2接続パッドと前記錫系はんだとの間に、(Cu,Ni)6Sn5層がそれぞれ形成されていることを特徴とする請求項4に記載の電子装置。 - 前記錫系はんだは、錫/ビスマスはんだ、錫/銀はんだ、及び錫/ビスマス/ニッケルはんだのいずれかであることを特徴とする請求項4又は5に記載の電子装置。
- 銅ボールを用意する工程と、
前記銅ボールの外面を被覆するニッケル層を形成する工程と、
前記ニッケル層の外面を被覆する銅層を形成する工程と、
前記銅層の外面を被覆する錫系はんだを形成する工程と
を有し、
前記錫系はんだがリフロー加熱される際に、前記銅層の銅が前記錫系はんだに拡散して、前記錫系はんだ内の銅の濃度が0.7wt%〜3wt%になるように、前記銅層の厚みが調整されることを特徴とする導電性ボールの製造方法。 - 第1接続パッドを備えた下側電子部材と、
第2接続パッドを備えた上側電子部材と、
銅ボールと、前記銅ボールの外面を被覆するニッケル層と、前記ニッケル層の外面を被覆する銅層と、前記銅層の外面を被覆する錫系はんだとを有する導電性ボールと
を用意する工程と、
前記下側電子部材の第1接続パッドと前記上側電子部材の第2接続パッドとを、前記導電性ボールの錫系はんだをリフロー加熱して接続する工程と
を有し、
前記導電性ボールの前記ニッケル層と前記錫系はんだとの間に(Cu,Ni)6Sn5層が形成されることを特徴とする電子装置の製造方法。 - 前記導電性ボールを用意する工程において、
前記錫系はんだをリフロー加熱する際に、前記銅層の銅が前記錫系はんだに拡散して、前記錫系はんだ内の銅の濃度が0.7wt%〜3wt%になるように、前記銅層の厚みが調整されていることを特徴とする請求項8に記載の電子装置の製造方法。 - 前記下側電子部材の第1接続パッドと前記上側電子部材の第2接続パッドとを接続する工程において、
前記第1接続パッド及び前記第2接続パッドの各表面はニッケル層又は銅層であり、
前記第1接続パッドと前記錫系はんだとの間、及び前記第2接続パッドと前記錫系はんだとの間に、(Cu,Ni)6Sn5層がそれぞれ形成されることを特徴とする請求項8又は9に記載の電子装置の製造方法。 - 前記錫系はんだは、錫/ビスマスはんだ、錫/銀はんだ、及び錫/ビスマス/ニッケルはんだのいずれかであることを特徴とする請求項8乃至10のいずれか一項に記載の電子装置の製造方法。
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| Application Number | Priority Date | Filing Date | Title |
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| JP2017133267A JP7014535B2 (ja) | 2017-07-07 | 2017-07-07 | 導電性ボール及び電子装置とそれらの製造方法 |
| US16/023,500 US10446513B2 (en) | 2017-07-07 | 2018-06-29 | Conductive ball having a tin-based solder covering an outer surface of the copper ball |
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| JP2017133267A JP7014535B2 (ja) | 2017-07-07 | 2017-07-07 | 導電性ボール及び電子装置とそれらの製造方法 |
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| WO2024038665A1 (ja) * | 2022-08-16 | 2024-02-22 | 日立Astemo株式会社 | 電子装置、電子装置の製造方法 |
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| JP7041477B2 (ja) * | 2017-07-05 | 2022-03-24 | 新光電気工業株式会社 | 導電性ボール及び電子装置とそれらの製造方法 |
| US11145614B2 (en) * | 2019-10-18 | 2021-10-12 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor device and method of manufacture |
| KR102461313B1 (ko) * | 2020-05-19 | 2022-11-01 | 엠케이전자 주식회사 | 리버스 리플로우용 심재를 이용한 반도체 패키지 |
| US12313478B2 (en) * | 2021-10-01 | 2025-05-27 | Sensitronics, LLC | Low drift force sensor with capacitive capability |
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| JP2010099736A (ja) * | 2008-09-25 | 2010-05-06 | Hitachi Metals Ltd | 耐落下衝撃特性に優れた接続端子用ボールおよび接続端子ならびに電子部品 |
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| JP2016106033A (ja) * | 2007-10-19 | 2016-06-16 | 株式会社日本スペリア社 | はんだ継手 |
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| JP2015072996A (ja) | 2013-10-02 | 2015-04-16 | 新光電気工業株式会社 | 半導体装置 |
| TWI637465B (zh) * | 2017-06-03 | 2018-10-01 | Siliconware Precision Industries Co., Ltd. | 電子封裝件及其製法 |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007075856A (ja) * | 2005-09-14 | 2007-03-29 | Nippon Steel Materials Co Ltd | Cuコアボール |
| JP2016106033A (ja) * | 2007-10-19 | 2016-06-16 | 株式会社日本スペリア社 | はんだ継手 |
| JP2010099736A (ja) * | 2008-09-25 | 2010-05-06 | Hitachi Metals Ltd | 耐落下衝撃特性に優れた接続端子用ボールおよび接続端子ならびに電子部品 |
| JP2013031864A (ja) * | 2011-08-01 | 2013-02-14 | Hitachi Metals Ltd | はんだボールおよびはんだボールを用いた半導体装置 |
| JP2015186826A (ja) * | 2015-06-05 | 2015-10-29 | 日立金属株式会社 | はんだボールおよび半導体装置 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024038665A1 (ja) * | 2022-08-16 | 2024-02-22 | 日立Astemo株式会社 | 電子装置、電子装置の製造方法 |
| JP2024026932A (ja) * | 2022-08-16 | 2024-02-29 | 日立Astemo株式会社 | 電子装置、電子装置の製造方法 |
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| US20190013286A1 (en) | 2019-01-10 |
| US10446513B2 (en) | 2019-10-15 |
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