发明授权
US08507969B2 Method and system for providing contact to a first polysilicon layer in a flash memory device
有权
用于提供与闪存器件中的第一多晶硅层的接触的方法和系统
- 专利标题: Method and system for providing contact to a first polysilicon layer in a flash memory device
- 专利标题(中): 用于提供与闪存器件中的第一多晶硅层的接触的方法和系统
-
申请号: US13465649申请日: 2012-05-07
-
公开(公告)号: US08507969B2公开(公告)日: 2013-08-13
- 发明人: Mark S. Chang , Hao Fang , King Wai Kelwin Ko
- 申请人: Mark S. Chang , Hao Fang , King Wai Kelwin Ko
- 申请人地址: US CA Sunnyvale
- 专利权人: Spansion LLC
- 当前专利权人: Spansion LLC
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Sterne, Kessler, Goldstein & Fox PLLC
- 主分类号: H01L29/788
- IPC分类号: H01L29/788
摘要:
A method and system for providing at least one contact in a flash memory device is disclosed. The flash memory device includes a plurality of gate stacks and at lease one component including a polysilicon layer as a top surface. The method and system further include forming a silicide on the top surface of the polysilicon layer and providing an insulating layer covering the plurality of gate stacks, the at least one component and the silicide. The method and system also include etching the insulating layer to provide at least one contact hole. The insulating layer etching step uses the silicide as an etch stop layer to ensure that the insulating etching step does not etch through the polysilicon layer. The method and system also include filling the at least one contact hole with a conductor.
公开/授权文献
信息查询
IPC分类: