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发明名称
CU BALL
摘要
Cu 이외의 불순물 원소를 일정량 이상 함유해도 α선량이 적고 진구도가 높은 Cu 볼을 제공한다. 소프트 에러를 억제하여 접속 불량을 저감시키기 위해, U 및 Th의 함유량을 5ppb 이하로 하고, 순도를 99.995% 이하로 해도, α선량은 0.0200cph/㎠ 이하이다. 또한, 예상외로서도, 순도가 99.995% 이하로 한 것에 의해 Cu 볼의 진구도가 향상되었다.
申请公布号
KR20160015396(A)
申请公布日期
2016.02.12
申请号
KR20167001978
申请日期
2012.12.06
申请人
SENJU METAL INDUSTRY CO., LTD.
发明人
KAWASAKI HIROYOSHI;HATTORI TAKAHIRO;ROPPONGI TAKAHIRO;SOMA DAISUKE;SATO ISAMU
分类号
B22F1/00;B22F1/02;B23K35/02;B23K35/30;C22F1/00;C22F1/02;C22F1/08
主分类号
B22F1/00
代理机构
代理人
主权项
地址
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