发明授权
- 专利标题: Through silicon via with embedded barrier pad
- 专利标题(中): 通过硅通孔与嵌入式屏障垫
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申请号: US13457841申请日: 2012-04-27
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公开(公告)号: US08772945B2公开(公告)日: 2014-07-08
- 发明人: Yung-Chi Lin , Wen-Chih Chiou , Yen-Hung Chen , Sylvia Lo , Jing-Cheng Lin
- 申请人: Yung-Chi Lin , Wen-Chih Chiou , Yen-Hung Chen , Sylvia Lo , Jing-Cheng Lin
- 申请人地址: TW Hsin-Chu
- 专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人: Taiwan Semiconductor Manufacturing Company, Ltd.
- 当前专利权人地址: TW Hsin-Chu
- 代理机构: Slater and Matsil, L.L.P.
- 主分类号: H01L23/48
- IPC分类号: H01L23/48
摘要:
A system and method are disclosed for providing a through silicon via (TSV) with a barrier pad deposited below the top surface of the TSV, the top surface having reduced topographic variations. A bottom TSV pad is deposited into a via and then polished so the top surface is below the substrate top surface. A barrier pad is then deposited in the via, and a top TSV pad deposited on the barrier pad. The top TSV barrier pad is polished to bring the top surface of the top TSV pad about level with the substrate. The barrier pad may be less than about 1 microns thick, and the top TSV pad may be less than about 6 microns thick. The barrier pad may be a dissimilar metal from the top and bottom TSV pads, and may be selected from a group comprising titanium, tantalum, cobalt, nickel and the like.
公开/授权文献
- US20130285244A1 Through Silicon Via with Embedded Barrier Pad 公开/授权日:2013-10-31
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