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Learn More晶圓之接合方法及接合部之構造
Abstract
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Classifications
machine-classified
cpc-machine-classified
fterm-machine-classified
fterm-family-classified
Google has not performed a legal analysis and makes no representation as to the accuracy of the classifications listed.
Google has not performed a legal analysis and makes no representation as to the accuracy of the classifications listed.
Google has not performed a legal analysis and makes no representation as to the accuracy of the classifications listed.
Landscapes
TWI484532B
Taiwan
- Other languages
English - Inventor
Takeshi Fujiwara Toshiaki Okuno Katsuyuki Inoue Junya Yamamoto Kenichi Hinuma Yoshiki Ashihara Takaaki Miyaji
Google has not performed a legal analysis and makes no representation as to the accuracy or completeness of the events listed.
Description
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Claims (20)
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- 一種接合晶圓之方法,包括下列步驟:藉由將一由對於AuSn具有低可濕性之材料所形成之防擴散層堆疊於一第一晶圓上方及使一接合層從該防擴散層之邊緣縮進之方式於該防擴散層之一表面上形成該接合層,而於該第一晶圓之一表面上形成一第一接合部;於一第二晶圓之一表面上形成一第二接合部;以及在該第一晶圓與該第二晶圓彼此相對之狀況下,藉由共晶接合一AuSn焊料而接合該第一接合部與該第二接合部。
- 如申請專利範圍第1項之接合晶圓之方法,其中,該第一接合部之防擴散層係由一含有像Pt、Rh、Pd、Ir、Ru或Os之白金族金屬做為其主要成分之材料所形成。
- 如申請專利範圍第1項之接合晶圓之方法,其中,該第一接合部之接合層係由一含有Au做為其主要成分之材料所形成。
- 如申請專利範圍第1項之接合晶圓之方法,其中,在該第一晶圓之表面上形成一含有Cr做為其主要成分之黏著層。
- 如申請專利範圍第4項之接合晶圓之方法,其中,在該黏著層與該防擴散層間形成一Au層。
- 如申請專利範圍第1項之接合晶圓之方法,其中,藉由交替地堆疊Au與Sn或以一AuSn合金,在該第一接 合部及該第二接合部之至少一表面上事先形成一AuSn焊料層,以及藉由AuSn共晶接合熔化之AuSn焊料層而接合該第一接合部與該第二接合部。
- 如申請專利範圍第1項之接合晶圓之方法,其中,在於該第一晶圓之表面上形成該第一接合部的步驟中,藉由堆疊以相同於該第一接合部之順序及材料所形成之層,而於該第一晶圓之表面上形成一打開或關閉接觸點。
- 如申請專利範圍第7項之接合晶圓之方法,其中,該打開或關閉接觸點之每一層具有相同於在該第一接合部中之對應層的厚度及從該第一晶圓之表面算起的高度。
- 如申請專利範圍第1項之接合晶圓之方法,其中,一在該第二接合部中與該第二晶圓接觸之面包括一由具有高化學抗性之材料所形成之導電層,在該第二晶圓中之對應於該第二接合部之位置中形成一介層孔,以及在該介層孔中形成一貫穿佈線,以連接至由具有高化學抗性之材料所形成之該導電層。
- 如申請專利範圍第1項之接合晶圓之方法,其中,該第二接合部具有一有相對大厚度之導電層。
- 如申請專利範圍第1項之接合晶圓之方法,其中,該第二接合部之一表面包括一Au層,以及以一絕緣塗膜覆蓋該第二接合部之表面的外周圍表面及外周圍邊緣。
- 如申請專利範圍第9項之接合晶圓之方法,其中,該具有高化學抗性之材料係選自Ti、TiN、W或白金族材料中之一或多個材料。
- 如申請專利範圍第10項之接合晶圓之方法,其中,該具有相對大厚度之導電層係由選自Al、Cu、Ni、W或複晶矽中之一或多個材料所形成。
- 一種接合部之結構,包括:一防擴散層,其由對於AuSn具有低可濕性之材料所形成,該防擴散層係堆疊在一晶圓上方,一接合層,其以該接合層從該防擴散層之邊緣縮進之方式形成於該防擴散層之一表面上;以及一會因對AuSn之擴散而變差之功能層,其形成於該晶圓與該防擴散層之間。
- 如申請專利範圍第14項之接合部之結構,其中,該第一接合部之防擴散層係由一含有像Pt、Rh、Pd、Ir、Ru或Os之白金族金屬做為它的主要成分之材料所形成。
- 如申請專利範圍第14項之接合部之結構,其中,該第一接合部之功能層係一在該第一晶圓之一表面上所形成且含有Cr做為它的主要成分之黏著層。
- 如申請專利範圍第14項之接合部之結構,其中,該第一接合部之接合層係由一含有Au做為它的主要成分之材料所形成。
- 如申請專利範圍第14項之接合部之結構,其中,藉由堆疊以相同於該第一接合部之順序及材料所構成之層,而於該第一晶圓之表面上,形成一打開或關閉接觸點。
- 如申請專利範圍第18項之接合部之結構,其中,該打開或關閉接觸點之每一層具有相同於在該第一接合部中之對應層的厚度及從該第一晶圓之表面算起的高度。
- 一種電子零件,其包括在藉由申請專利範圍第1項之接合晶圓之方法所接合之一對晶圓中所形成之一電子零件結構體。