发明授权
US07189615B2 Single mask MIM capacitor and resistor with in trench copper drift barrier
有权
单掩模MIM电容器和电阻器具有沟槽铜漂移屏障
- 专利标题: Single mask MIM capacitor and resistor with in trench copper drift barrier
- 专利标题(中): 单掩模MIM电容器和电阻器具有沟槽铜漂移屏障
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申请号: US11037530申请日: 2005-01-18
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公开(公告)号: US07189615B2公开(公告)日: 2007-03-13
- 发明人: Satyavolu Srinivas Papa Rao , Darius Lammont Crenshaw , Stephan Grunow , Kenneth D. Brennan , Somit Joshi , Montray Leavy , Phillip D. Matz , Sameer Kumar Ajmera , Yuri E. Solomentsev
- 申请人: Satyavolu Srinivas Papa Rao , Darius Lammont Crenshaw , Stephan Grunow , Kenneth D. Brennan , Somit Joshi , Montray Leavy , Phillip D. Matz , Sameer Kumar Ajmera , Yuri E. Solomentsev
- 申请人地址: US TX Dallas
- 专利权人: Texas Instruments Incorporated
- 当前专利权人: Texas Instruments Incorporated
- 当前专利权人地址: US TX Dallas
- 代理商 Peter K. McLarty; W. James Brady, III; Frederick J. Telecky, Jr.
- 主分类号: H01L21/8242
- IPC分类号: H01L21/8242
摘要:
The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier (124) is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier (124) mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface (125) of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).
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