发明名称 |
Semiconductor Device Having Multiple Fin Heights |
摘要 |
A semiconductor device having multiple fin heights is provided. Multiple fin heights are provided by using multiple masks to recess a dielectric layer within a trench formed in a substrate. In another embodiment, an implant mold or e-beam lithography are utilized to form a pattern of trenches in a photoresist material. Subsequent etching steps form corresponding trenches in the underlying substrate. In yet another embodiment, multiple masking layers are used to etch trenches of different heights separately. A dielectric region may be formed along the bottom of the trenches to isolate the fins by performing an ion implant and a subsequent anneal.
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申请公布号 |
US2009253266(A1) |
申请公布日期 |
2009.10.08 |
申请号 |
US20090484911 |
申请日期 |
2009.06.15 |
申请人 |
YU CHEN-HUA;YEH CHEN-NAN;HSU YU-RUNG |
发明人 |
YU CHEN-HUA;YEH CHEN-NAN;HSU YU-RUNG |
分类号 |
H01L21/302 |
主分类号 |
H01L21/302 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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