发明申请
- 专利标题: METHODS AND STRUCTURES FOR A SPLIT GATE MEMORY CELL STRUCTURE
- 专利标题(中): 一种分离栅细胞结构的方法和结构
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申请号: US13929924申请日: 2013-06-28
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公开(公告)号: US20150001606A1公开(公告)日: 2015-01-01
- 发明人: Cheong Min Hong , Sung-Taeg Kang
- 申请人: Cheong Min Hong , Sung-Taeg Kang
- 主分类号: H01L29/423
- IPC分类号: H01L29/423 ; H01L29/788 ; H01L29/49 ; H01L29/66 ; H01L29/792
摘要:
A method of forming a split gate memory cell structure using a substrate includes forming a gate stack comprising a select gate and a dielectric portion overlying the select gate. A charge storage layer is formed over the substrate including over the gate stack. A first sidewall spacer of conductive material is formed along a first sidewall of the gate stack extending past a top of the select gate. A second sidewall spacer of dielectric material is formed along the first sidewall on the first sidewall spacer. A portion of the first sidewall spacer is silicided using the second sidewall spacer as a mask whereby silicide does not extend to the charge storage layer.
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