Invention Grant
- Patent Title: Methods for forming a memory cell having a top oxide spacer
- Patent Title (中): 形成具有顶部氧化物间隔物的存储单元的方法
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Application No.: US13428848Application Date: 2012-03-23
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Publication No.: US08384146B2Publication Date: 2013-02-26
- Inventor: Shenqing Fang , Angela Hui , Gang Xue , Alexander Nickel , Kashmir Sahota , Scott Bell , Chun Chen , Wai Lo
- Applicant: Shenqing Fang , Angela Hui , Gang Xue , Alexander Nickel , Kashmir Sahota , Scott Bell , Chun Chen , Wai Lo
- Applicant Address: US CA Sunnyvale
- Assignee: Spansion LLC
- Current Assignee: Spansion LLC
- Current Assignee Address: US CA Sunnyvale
- Main IPC: H01L29/76
- IPC: H01L29/76

Abstract:
Methods for fabricating a semiconductor memory cell that has a spacer layer are disclosed. A method includes forming a plurality of source/drain regions in a substrate where the plurality of source/drain regions are formed between trenches, forming a first oxide layer above the plurality of source/drain regions and in the trenches, forming a charge storage layer above the oxide layer and separating the charge storage layer in the trenches where a space is formed between separated portions of the charge storage layer. The method further includes forming a spacer layer to fill the space between the separated portions of the charge storage layer and to rise a predetermined distance above the space. A second oxide layer is formed above the charge storage layer and the spacer layer and a polysilicon layer is formed above the second oxide layer.
Public/Granted literature
- US20120181601A1 METHODS FOR FORMING A MEMORY CELL HAVING A TOP OXIDE SPACER Public/Granted day:2012-07-19
Information query
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