- 专利标题: Structures and methods for forming dynamic random-access devices
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申请号: US17477858申请日: 2021-09-17
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公开(公告)号: US11700721B2公开(公告)日: 2023-07-11
- 发明人: Sony Varghese
- 申请人: Applied Materials, Inc.
- 申请人地址: US CA Santa Clara
- 专利权人: Applied Materials, Inc.
- 当前专利权人: Applied Materials, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: KDW Firm PLLC
- 主分类号: H10B12/00
- IPC分类号: H10B12/00 ; H01L21/265 ; H01L21/3065 ; H01L21/308
摘要:
Disclosed are DRAM devices and methods of forming DRAM devices. One non-limiting method may include providing a device, the device including a plurality of angled structures formed from a substrate, a bitline and a dielectric between each of the plurality of angled structures, and a drain disposed along each of the plurality of angled structures. The method may further include providing a plurality of mask structures of a patterned masking layer over the plurality of angled structures, the plurality of mask structures being oriented perpendicular to the plurality of angled structures. The method may further include etching the device at a non-zero angle to form a plurality of pillar structures.
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