发明授权
US06835609B1 Method of forming double-gate semiconductor-on-insulator (SOI) transistors
有权
形成双栅绝缘体上半导体(SOI)晶体管的方法
- 专利标题: Method of forming double-gate semiconductor-on-insulator (SOI) transistors
- 专利标题(中): 形成双栅绝缘体上半导体(SOI)晶体管的方法
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申请号: US10664210申请日: 2003-09-17
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公开(公告)号: US06835609B1公开(公告)日: 2004-12-28
- 发明人: Yong Meng Lee , Da Jin , Mau Lam Lai , David Vigar , Siow Lee Chwa
- 申请人: Yong Meng Lee , Da Jin , Mau Lam Lai , David Vigar , Siow Lee Chwa
- 主分类号: H01L21338
- IPC分类号: H01L21338
摘要:
A method of forming a double gated SOI channel transistor comprising the following steps. A substrate having an SOI structure formed thereover is provided. The SOI structure including a lower SOI silicon oxide layer and an upper SOI silicon layer. The SOI silicon layer is patterned to form a patterned silicon layer. A dummy layer is formed over the SOI silicon oxide layer and the patterned SOI silicon layer. The dummy layer is patterned to form a damascene opening therein exposing: a portion of the lower SOI silicon oxide layer; and a central portion of the patterned SOI silicon layer to define a source structure and a drain structure. Patterning the exposed lower SOI silicon oxide layer to form a recess. Gate oxide layer portions are formed around the exposed portion of the patterned SOI silicon layer. A planarized layer portion is formed within the final damascene opening. The planarized layer portion including a bottom gate and a top gate. The patterned dummy layer is removed to form the double gated SOI channel transistor.
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