发明授权
- 专利标题： Standard cell library, method of designing semiconductor integrated circuit, semiconductor integrated circuit pattern, and semiconductor integrated circuit
- 专利标题（中）： 标准单元库，半导体集成电路设计方法，半导体集成电路图案和半导体集成电路
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申请号： US11543148申请日： 2006-10-05
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公开(公告)号： US07469389B2公开(公告)日： 2008-12-23
- 发明人: Yasunari Namba , Takahiro Yamamoto
- 申请人： Yasunari Namba , Takahiro Yamamoto
- 申请人地址： JP Chiba
- 专利权人： Kawasaki Microelectronics, Inc.
- 当前专利权人： Kawasaki Microelectronics, Inc.
- 当前专利权人地址： JP Chiba
- 代理机构： Oliff & Berridge, PLC
- 优先权： JP2005-294646 20051007
- 主分类号： G06F17/50
- IPC分类号： G06F17/50
摘要：
An exemplary cell library includes a first plurality of types of standard cells. Each of the first plurality of types of standard cells includes threshold voltage adjusting patterns. The upper and the lower boundaries of the threshold voltage adjusting patterns contact the upper and lower boundaries of the cell frame and the distances between the left and right boundaries of the threshold voltage adjusting patterns and the cell frame are set appropriately. Accordingly, it is possible to place standard cells including transistors with different threshold voltages at arbitrary positions without increasing the area of a circuit block or the design cost.
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