发明授权
- 专利标题: Method of forming interconnection lines for semiconductor device
- 专利标题(中): 形成半导体器件互连线的方法
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申请号: US11049730申请日: 2005-02-04
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公开(公告)号: US07192864B2公开(公告)日: 2007-03-20
- 发明人: Kyoung-Woo Lee , Hong-Jae Shin , Jae-Hak Kim , Young-Jin Wee , Seung-Jin Lee , Ki-Kwan Park
- 申请人: Kyoung-Woo Lee , Hong-Jae Shin , Jae-Hak Kim , Young-Jin Wee , Seung-Jin Lee , Ki-Kwan Park
- 申请人地址: KR Gyeonggi-do
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Gyeonggi-do
- 代理机构: Volentine & Whitt, PLLC
- 优先权: KR10-2004-0009120 20040211
- 主分类号: H01L21/4763
- IPC分类号: H01L21/4763
摘要:
The present invention discloses a method of fabricating interconnection lines for a semiconductor device. The method includes forming an interlayer insulating layer on a semiconductor substrate. A via hole is formed through the interlayer insulating layer. A via filling material is formed to fill the via hole. A photoresist pattern is formed on the via filling material. The via filling material and the interlayer insulating layer are anisotropically etched using the photoresist pattern as an etch mask to form a trench. A residual portion of the via filling material is removed using two wet etch processes. After removing the residual portion of the via filling material, a conductive layer pattern is formed in the via hole and the trench.
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