JP6197619B2 - 電子装置及び電子装置の製造方法 - Google Patents
電子装置及び電子装置の製造方法 Download PDFInfo
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- JP6197619B2 JP6197619B2 JP2013254372A JP2013254372A JP6197619B2 JP 6197619 B2 JP6197619 B2 JP 6197619B2 JP 2013254372 A JP2013254372 A JP 2013254372A JP 2013254372 A JP2013254372 A JP 2013254372A JP 6197619 B2 JP6197619 B2 JP 6197619B2
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Description
図1は第1の実施の形態に係る電子装置の一例を示す図である。尚、図1には、第1の実施の形態に係る電子装置の一例の要部断面を模式的に図示している。
電子部品10は、その表面10aに設けられた端子11を有している。ここでは一例として、1つの端子11を図示している。
電子部品10及び電子部品20にはそれぞれ、例えば、半導体素子(半導体チップ)、半導体素子を備える半導体パッケージ、又は回路基板を用いることができる。尚、電子部品10及び電子部品20の構成の詳細については後述する。
図2は第1の実施の形態に係る電子部品接合工程の一例を示す図である。尚、図2には、第1の実施の形態に係る電子部品接合工程の一例の要部断面を模式的に図示している。図2(A)は接合前の状態の一例を示す図、図2(B)は接合時の状態の一例を示す図、図2(C)は接合後の状態の一例を示す図である。
前述のように、例えば電子部品10及び電子部品20にはそれぞれ、半導体素子、半導体素子を備える半導体パッケージ、又は回路基板を用いることができる。半導体素子、半導体パッケージ、回路基板の構成例について、以下の図3〜図7を参照して説明する。
図3に示す半導体素子100は、トランジスタ等の素子が設けられた半導体基板110と、半導体基板110上に設けられた配線層120とを有する。
まず、図4に示す半導体パッケージ200について述べる。
続いて、図5に示す半導体パッケージ300について述べる。
続いて、図6に示す半導体パッケージ400について述べる。
図7は回路基板の構成例を示す図である。尚、図7(A)及び図7(B)にはそれぞれ、回路基板の一例の要部断面を模式的に図示している。
ここでは、接合する電子部品の一方を回路基板とし、他方を半導体パッケージとして、それらをSn−Ag系半田を用いて接合する場合を例にして説明する。
回路基板40は、その表面40aに設けられた端子41を有する。端子41は、Cu等の電極層41aと、電極層41a上に設けられた、例えばNiとAuを積層したNi/Auの電極層41bとを含む。回路基板40の端子41(電極層41b)上には、例えばSn−Ag−Cu半田の接合材60bが予め設けられる。接合材60bは、例えば、端子41上に半田ペーストを塗布したり半田をメッキにより堆積したりすることで、形成される。
図9は第2の実施の形態に係る電子装置の第1構成例を示す図である。尚、図9には、第2の実施の形態に係る電子装置の第1構成例の要部断面を模式的に図示している。
ここでは、上記第2の実施の形態と同様に、接合する電子部品の一方を回路基板とし、他方を半導体パッケージとして、それらをSn−Ag系半田を用いて接合する場合を例にして説明する。
回路基板40は、その表面40aに設けられた、Cu等の電極層41aとNi/Au等の電極層41bとを含む端子41を有する。端子41(電極層41b)上には、例えばSn−Ag−Cu半田の接合材60bが予め設けられる。
部材70Bを回路基板40下に設ける方法の1つとして、部材70B上に回路基板40を載置する方法が挙げられる。この場合、回路基板40は、単に部材70B上に載置すればよく、接着材を用いて部材70B上に接着する等して固定することを要しない。このように部材70B上に載置された回路基板40に、図11(A)〜図11(C)に示したように、接合材60a及び接合材60bが用いられ、半導体パッケージ50が接合される。接合後の構造体は、部材70B上からピックアップされる。これにより、接合部60で回路基板40と半導体パッケージ50が接合された、部材70Bを含まない電子装置1Bが得られる。
図12は第3の実施の形態に係る電子装置の第1構成例を示す図である。尚、図12には、第3の実施の形態に係る電子装置の第1構成例の要部断面を模式的に図示している。
ここでは、上記第2及び第3の実施の形態と同様に、接合する電子部品の一方を回路基板とし、他方を半導体パッケージとして、それらをSn−Ag系半田を用いて接合する場合を例にして説明する。
回路基板40は、その表面40aに設けられた、Cu等の電極層41aとNi/Au等の電極層41bとを含む端子41を有する。端子41(電極層41b)上には、例えばSn−Ag−Cu半田の接合材60bが予め設けられる。
図18に示す製造装置1000は、配置部1100、加熱部1200及び冷却部1300を備える。
〔実施例1〕
平面サイズ35mm×35mmの半導体パッケージの背面に、その半導体パッケージと同等サイズのCuプレート(部材)を装着した。そして、このCuプレートを装着した半導体パッケージと、回路基板とを、Sn−3.0Ag−0.5Cu(Ag:3.0wt%,Cu:0.5wt%)の半田ボールを用いて接合した。接合は、N2雰囲気(酸素濃度100ppm以下)中、最大温度245℃、217℃以上で2分間の条件で行った。
平面サイズ35mm×35mmの半導体パッケージの背面に、その半導体パッケージと同等サイズのAlプレート(部材)を装着した。そして、このAlプレートを装着した半導体パッケージと、回路基板とを、Sn−3.0Ag−0.5Cu(Ag:3.0wt%,Cu:0.5wt%)の半田ボールを用いて接合した。接合は、N2雰囲気(酸素濃度100ppm以下)中、最大温度245℃、217℃以上で2分間の条件で行った。
平面サイズ35mm×35mmの半導体パッケージの背面に、その半導体パッケージと同等サイズのCuプレート(部材)を装着した。そして、このCuプレートを装着した半導体パッケージと、回路基板とを、Sn−57Bi−1.0Ag(Bi:57wt%,Ag:1.0wt%)の半田ボールを用いて接合した。接合は、N2雰囲気(酸素濃度100ppm以下)中、最大温度210℃、139℃以上で3分間の条件で行った。
回路基板の背面に、その回路基板と同等サイズのCuプレート(部材)を装着した。そして、このCuプレートを装着した回路基板と、平面サイズ35mm×35mmの半導体パッケージとを、Sn−57Bi−1.0Ag(Bi:57wt%,Ag:1.0wt%)の半田ボールを用いて接合した。接合は、N2雰囲気(酸素濃度100ppm以下)中、最大温度210℃、139℃以上で3分間の条件で行った。
平面サイズ35mm×35mmの半導体パッケージと、回路基板とを、Sn−57Bi−1.0Ag(Bi:57wt%,Ag:1.0wt%)の半田ボールを用いて接合した。接合は、N2雰囲気(酸素濃度100ppm以下)中、最大温度210℃、139℃以上で3分間の条件で行い、冷却時に半導体パッケージに対して選択的にN2の吹き付けを行った。
(付記1) 第1端子を備える第1電子部品と、
前記第1端子に対向する第2端子を備える第2電子部品と、
前記第1端子と前記第2端子を接合し、前記第1端子と前記第2端子の対向方向に延在された柱状の第1化合物を含有する接合部と
を含むことを特徴とする電子装置。
前記部分は、第1元素と、前記第1元素とは異なる第2元素とを含み、
前記第1化合物は、前記第1元素と前記第2元素とを含む金属間化合物であることを特徴とする付記1に記載の電子装置。
前記部分は、第1元素と、前記第1元素とは異なる第2元素とを含み、
前記第1化合物及び前記第2化合物は、前記第1元素と前記第2元素とを含む金属間化合物であることを特徴とする付記3に記載の電子装置。
(付記6) 前記第1部材は、前記第2電子部品と離間していることを特徴とする付記5に記載の電子装置。
(付記8) 第1端子を備える第1電子部品を準備する工程と、
第2端子を備える第2電子部品を準備する工程と、
前記第1端子と前記第2端子を対向させ、接合材を用いて前記第1端子と前記第2端子を接合する工程と
を含み、
前記接合材を用いて前記第1端子と前記第2端子を接合する工程は、
前記接合材を加熱し溶融する工程と、
前記第1電子部品を前記第2電子部品よりも高温にした状態で、前記接合材を冷却し凝固する工程と
を含むことを特徴とする電子装置の製造方法。
前記接合材を用いて前記第1端子と前記第2端子を接合する工程は、前記第1部材が設けられた前記第1電子部品の前記第1端子と、前記第2電子部品の前記第2端子とを接合する工程を含むことを特徴とする付記8に記載の電子装置の製造方法。
前記第1部材を除去する工程は、前記接着材の接着力を低下させて前記第1部材を前記第1電子部品から除去する工程を含むことを特徴とする付記10に記載の電子装置の製造方法。
前記配置部の後段に設けられ、前記第1端子と前記第2端子の間の前記接合材が加熱により溶融され、溶融された前記接合材によって前記第1端子と前記第2端子が接続される加熱部と、
前記加熱部の後段に設けられ、前記第1端子と前記第2端子の間の溶融された前記接合材が冷却により凝固される冷却部と
を含み、
前記冷却部は、
前記冷却部内の雰囲気温度を調整する第1温度調節装置と、
前記第1電子部品と前記第2電子部品のうち一方の温度を選択的に調節可能な第2温度調節装置と
を備えることを特徴とする電子装置の製造装置。
10,20 電子部品
10a,20a,40a,50a 表面
11,21,41,51,121a,211a,311a,420a,431a,511a,630a 端子
30,60 接合部
30a,60a,60b 接合材
31,61 化合物
32,62 部分
40,500,600 回路基板
40b 下面
41a,41b,51a,51b 電極層
50,200,300,400 半導体パッケージ
50b 上面
60c 接合部位
70A,70B 部材
80a,80b,351 接着材
91 送風
92 加熱
100,220,320,420 半導体素子
110 半導体基板
110a 素子分離領域
120,430 配線層
121,211,311,431,511 導体部
122,212,312,432,512 絶縁部
130 MOSトランジスタ
131 ゲート絶縁膜
132 ゲート電極
133 ソース領域
134 ドレイン領域
135 スペーサ
210,310 パッケージ基板
230 封止層
240 ダイアタッチ材
250 ワイヤ
330 被覆材
340 バンプ
341 アンダーフィル材
350 熱界面材料
410 樹脂層
610 コア基板
620 絶縁層
630 導体パターン
640 ビア
1000 製造装置
1100 配置部
1200 加熱部
1300 冷却部
1310,1320,1330 温度調節装置
Claims (8)
- 第1端子を備える第1電子部品と、
前記第1端子に対向する第2端子を備える第2電子部品と、
前記第1端子と前記第2端子を接合し、前記第1端子と前記第2端子の対向方向に延在された柱状の第1化合物と、前記第1化合物を覆う部分とを有する接合部と
を含み、
前記部分は、Ag及びSnを含み、
前記第1化合物は、Ag 3 Snであり、前記接合部の筋金として機能することを特徴とする電子装置。 - 前記接合部は、前記第1化合物と、前記第1端子と前記第2端子の対向方向に延在された柱状の第2化合物とを有し、前記第2化合物は、Ag 3 Snであり、前記接合部の筋金として機能することを特徴とする請求項1に記載の電子装置。
- 前記第1電子部品に設けられ、第1熱容量を有する第1部材を更に含むことを特徴とする請求項1又は2に記載の電子装置。
- 第1端子を備える第1電子部品を準備する工程と、
第2端子を備える第2電子部品を準備する工程と、
前記第1端子と前記第2端子を対向させ、接合材を用いて前記第1端子と前記第2端子を接合する工程と
を含み、
前記接合材を用いて前記第1端子と前記第2端子を接合する工程は、
前記接合材を加熱し溶融する工程と、
前記第1電子部品を前記第2電子部品よりも高温にした状態で、前記接合材を冷却し凝固して、前記第1端子と前記第2端子の対向方向に延在された柱状の第1化合物と、前記第1化合物を覆う部分とを有する接合部を形成する工程と
を含み、
前記部分は、Ag及びSnを含み、
前記第1化合物は、Ag 3 Snであり、前記接合部の筋金として機能することを特徴とする電子装置の製造方法。 - 前記第1電子部品を準備する工程後に、前記第1電子部品に、第1熱容量を有する第1部材を設ける工程を更に含み、
前記接合材を用いて前記第1端子と前記第2端子を接合する工程は、前記第1部材が設けられた前記第1電子部品の前記第1端子と、前記第2電子部品の前記第2端子とを接合する工程を含むことを特徴とする請求項4に記載の電子装置の製造方法。 - 前記接合材を用いて前記第1端子と前記第2端子を接合する工程後に、前記第1部材を除去する工程を更に含むことを特徴とする請求項5に記載の電子装置の製造方法。
- 前記接合材を冷却し凝固する工程は、前記第1電子部品が前記第2電子部品よりも高温になるように、前記第1電子部品と前記第2電子部品のうち、前記第2電子部品を選択的に冷却する工程を含むことを特徴とする請求項4に記載の電子装置の製造方法。
- 第1端子を備える第1電子部品と、第2端子を備える第2電子部品とが、前記第1端子と前記第2端子が接合材を介して対向されて配置される配置部と、
前記配置部の後段に設けられ、前記第1端子と前記第2端子の間の前記接合材が加熱により溶融され、溶融された前記接合材によって前記第1端子と前記第2端子が接続される加熱部と、
前記加熱部の後段に設けられ、前記第1端子と前記第2端子の間の溶融された前記接合材が冷却により凝固され、前記第1端子と前記第2端子の対向方向に延在された柱状の第1化合物と、前記第1化合物を覆う部分とを有する接合部が形成される冷却部と
を含み、
前記部分は、Ag及びSnを含み、
前記第1化合物は、Ag 3 Snであり、前記接合部の筋金として機能し、
前記冷却部は、
前記冷却部内の雰囲気温度を調整する第1温度調節装置と、
前記第1電子部品と前記第2電子部品のうち一方の温度を選択的に調節可能な第2温度調節装置と
を備え、前記第1温度調節装置、又は、前記第1温度調節装置及び前記第2温度調節装置を用い、前記第1電子部品と前記第2電子部品とを異なる温度に調整することを特徴とする電子装置の製造装置。
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US9812418B2 (en) | 2017-11-07 |
CN106887418A (zh) | 2017-06-23 |
CN104701281A (zh) | 2015-06-10 |
CN104701281B (zh) | 2017-07-14 |
US9530745B2 (en) | 2016-12-27 |
US20170012013A1 (en) | 2017-01-12 |
CN107424983A (zh) | 2017-12-01 |
CN107039379A (zh) | 2017-08-11 |
US9761552B2 (en) | 2017-09-12 |
JP2015115363A (ja) | 2015-06-22 |
US9490232B2 (en) | 2016-11-08 |
US20150162312A1 (en) | 2015-06-11 |
US20160247776A1 (en) | 2016-08-25 |
US20170062373A1 (en) | 2017-03-02 |
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