Invention Grant
US09337048B2 Method for disconnecting polysilicon stringers during plasma etching 有权
在等离子体蚀刻期间断开多晶硅桁条的方法

Method for disconnecting polysilicon stringers during plasma etching
Abstract:
A method of fabricating wordlines in semiconductor memory structures is disclosed that eliminates stringers between wordlines while maintaining a stable distribution of threshold voltage. A liner is deposited before performing a wordline etch, and a partial wordline etch is then performed. Remaining portions of the liner are removed, and the wordline etch is completed to form gates having vertical or tapered profiles.
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