Invention Grant
- Patent Title: Self-aligned, integrated circuit contact
- Patent Title (中): 自校准,集成电路接触
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Application No.: US10854891Application Date: 2004-05-27
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Publication No.: US07646099B2Publication Date: 2010-01-12
- Inventor: Philip J. Ireland
- Applicant: Philip J. Ireland
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Schwegman, Lundberg & Woessner, P.A.
- Main IPC: H01L29/417
- IPC: H01L29/417 ; H01L23/528

Abstract:
Embodiments concern contacts for use in integrated circuits, which have a reduced likelihood of shorting to unrelated portions of an overlying conductive layer due to contact misalignment. Embodiments for forming the integrated circuit include performing a first etching process to pattern the conductive layer, where the etching compound used in the first etching process is relatively selective to the conductive layer's materials. Embodiments also include performing a second, contact related etching process that removes a portion of any misaligned contacts that were exposed by the first etching process, where the etching compound used in the second etching process is selective to the contacts' materials. The embodiments can be used to form vias and other interconnect structures as well. The modified contacts and vias are adapted for use in conjunction with memory cells and apparatus incorporating such memory cells, as well as other integrated circuits.
Public/Granted literature
- US20040217484A1 Self-aligned, integrated circuit contact Public/Granted day:2004-11-04
Information query
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