Invention Grant
- Patent Title: Semiconductor devices including active regions in RAM areas with deposition determined pitch
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Application No.: US15978334Application Date: 2018-05-14
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Publication No.: US11257672B2Publication Date: 2022-02-22
- Inventor: Nan Wu
- Applicant: GLOBALFOUNDRIES U.S. Inc.
- Applicant Address: US CA Santa Clara
- Assignee: GLOBALFOUNDRIES U.S. Inc.
- Current Assignee: GLOBALFOUNDRIES U.S. Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Hoffman Warnick LLC
- Main IPC: H01L21/027
- IPC: H01L21/027 ; H01L21/475 ; H01L27/11 ; H01L21/28

Abstract:
The present disclosure provides manufacturing techniques in which the layout pattern of a RAM cell may be obtained on the basis of a single lithography step, followed by a sequence of two deposition processes, thereby resulting in a self-aligned mechanism for providing the most critical lateral dimensions for active regions. In this manner, the smallest pitch of approximately 80 nm and even less may be accomplished with superior device uniformity, while at the same time reducing overall manufacturing complexity.
Information query
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