JP6767204B2 - 電子部品搭載用基板、電子装置および電子モジュール - Google Patents
電子部品搭載用基板、電子装置および電子モジュール Download PDFInfo
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- JP6767204B2 JP6767204B2 JP2016164771A JP2016164771A JP6767204B2 JP 6767204 B2 JP6767204 B2 JP 6767204B2 JP 2016164771 A JP2016164771 A JP 2016164771A JP 2016164771 A JP2016164771 A JP 2016164771A JP 6767204 B2 JP6767204 B2 JP 6767204B2
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Description
本発明の第1の実施形態における電子装置は、図1〜図4に示すように、電子部品搭載用基板1と、電子部品搭載用基板1に搭載された電子部品2とを含んでいる。電子装置は、図4に示すように、例えば電子モジュールを構成するモジュール用基板5上にはんだ6を用いて接続される。
基体11の第1主面11aおよび側面に開口している2つの凹み部12と、2つの凹み部12の間に設けられ、第1主面11aに開口している1つのキャビティ16とを有している。第1の実施形態における電子部品搭載用基板1における絶縁基体11は、図1〜図3に示す例において、4層の絶縁層11cから形成されており、凹み部12は、第1主面11a側の1番目に設けられており、キャビティ16は、第1主面11a側の1番目〜3番目の絶縁層11cに設けられている。電極14は、第1主面11a側の2番目の絶縁層11cの表面、すなわち凹み部12の底面に設けられている。
法によって所定のパターンに印刷塗布して、絶縁基体11用のセラミックグリーンシートと同時に焼成することによって、絶縁基体11の所定位置に被着形成される。金属層13、電極14、配線導体15は、例えば、絶縁基体11用のセラミックグリーンシートに金属層13、電極14、配線導体15用のメタライズペーストをスクリーン印刷法等の印刷手段によって印刷塗布し、絶縁基体11用のセラミックグリーンシートとともに焼成することによって形成される。また、配線導体15となる貫通導体は、例えば、絶縁基体11用のセラミックグリーンシートに金型またはパンチングによる打ち抜き加工またはレーザー加工等の加工方法によって貫通導体用の貫通孔を形成し、この貫通孔に貫通導体用のメタライズペーストを上記印刷手段によって充填しておき、絶縁基体11用のセラミックグリーンシートとともに焼成することによって形成される。メタライズペーストは、上述の金属粉末に適当な溶剤およびバインダーを加えて混練することによって、適度な粘度に調整して作製される。なお、絶縁基体11との接合強度を高めるために、ガラス粉末、セラミック粉末を含んでいても構わない。
bの先端が絶縁基体11の第2主面11b側に埋設され、絶縁基体11の内部における電極および電極14の周囲における気密性を良好なものとし、凹み部12の周囲の気密性が低下することを抑制することができる電子部品搭載用基板1とすることができる。
被着される。これによって、金属層13、電極14、配線導体15が腐食することを効果的に抑制できるとともに、配線導体15とボンディングワイヤ等の接続部材3との接合、ならびに電極14とモジュール用基板5に形成された接続用の接続パッド51との接合、金属層13と蓋体4との接合を強固にできる。
長い(L1>L2かつL3>L2)と、凹み部12とキャビティ16の間の側壁全体にわたって電極14の端部14a全体が電極14の厚みを薄くかつ高密度に形成し、絶縁基体11の第2主面11b側に埋設させることができるので、絶縁基体11内部における電極および電極14の周囲における気密性を良好なものとし、凹み部12の周囲の気密性が低下することを抑制することができる電子部品搭載用基板1とすることができる。なお、電極14の長さL3が、帯状の金属層13の長さL1よりも長い(L3>L1)と、両主面側よりセラミックグリーンシートに圧力を印加する際に、金属層13に沿って均等に印加することができるので、好ましい。
次に、本発明の第2の実施形態による電子装置について、図5〜図7を参照しつつ説明する。
いる。
11・・・・絶縁基体
11a・・・第1主面
11b・・・第2主面
11c・・・絶縁層
12・・・・凹み部
13・・・・金属層
14・・・・電極
14a・・・端部
14b・・・傾斜部
15・・・・配線導体
16・・・・キャビティ
2・・・・電子部品
3・・・・接続部材
4・・・・蓋体
5・・・・モジュール用基板
51・・・・接続パッド
6・・・・はんだ
Claims (7)
- 第1主面および該第1主面に相対する第2主面を有しており、前記第1主面に開口し、凹み部を有する、平面視で矩形状の絶縁基体と、
前記凹み部の側壁上に設けられ、内側に電子部品が搭載され、蓋体が接合される枠状の金属層と、
前記凹み部の底面から前記絶縁基体の内部にかけて設けられた電極とを有しており、
該電極は端部が前記絶縁基体の内部に設けられ、前記端部は前記第2主面側に傾斜した傾斜部を有し、
平面透視において、前記凹み部の側壁と前記傾斜部とが重なっており、
前記傾斜部の先端は、前記凹み部の底面よりも第2主面側に位置していることを特徴とする電子部品搭載用基板。 - 平面透視において、前記枠状の金属層と前記傾斜部とが重なっていることを特徴とする請求項1に記載の電子部品搭載用基板。
- 平面透視において、前記傾斜部の領域が前記凹み部の側壁の領域に含まれていることを特徴とする請求項1または請求項2に記載の電子部品搭載用基板。
- 前記電極はモジュール用基板に接続される外部電極であり、
前記絶縁基体は側面を有しており、
前記凹み部は、前記側面に開口し、前記外部電極がモジュール用基板にはんだを介して接続される、はんだ溜まり部であることを特徴とする請求項1乃至請求項3のいずれかに記載の電子部品搭載用基板。 - 前記電極は電子部品が接続される接続用電極であり、
前記凹み部は前記接続用電極を介して電子部品を搭載するキャビティであることを特徴とする請求項1乃至請求項3のいずれかに記載の電子部品搭載用基板。 - 請求項1乃至請求項5のいずれかに記載の電子部品搭載用基板と、
該電子部品搭載用基板に搭載された電子部品と、
前記電子部品搭載用基板に接合された蓋体とを有することを特徴とする電子装置。 - 接続パッドを有するモジュール用基板と、
前記接続パッドにはんだを介して接続された請求項6に記載の電子装置とを有することを
特徴とする電子モジュール。
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