发明授权
- 专利标题: Process for forming a high density semiconductor device
- 专利标题(中): 用于形成高密度半导体器件的工艺
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申请号: US09236186申请日: 1999-01-22
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公开(公告)号: US06204112B1公开(公告)日: 2001-03-20
- 发明人: Ashima Bhattacharyya Chakravarti , Satya Narayan Chakravarti , James G. Ryan
- 申请人: Ashima Bhattacharyya Chakravarti , Satya Narayan Chakravarti , James G. Ryan
- 主分类号: H01L218242
- IPC分类号: H01L218242
摘要:
A method for forming an integrated circuit device, and the product thereby produced, are disclosed. The disclosed method includes the steps of obtaining a substrate with a patterned gate conductor and cap insulator, forming a dielectric masking layer having at least one opening, and, using the opening in the dielectric masking layer as a mask, forming a trench capacitor which is self-aligned to the cap insulator edge. The method is particularly useful for a producing a DRAM device having a dense array region with self-aligned deep trench storage capacitors connected by buried straps.
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