Invention Grant
- Patent Title: Super-self-aligned contacts and method for making the same
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Application No.: US14566249Application Date: 2014-12-10
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Publication No.: US09281371B2Publication Date: 2016-03-08
- Inventor: Michael C. Smayling
- Applicant: Tela Innovations, Inc.
- Applicant Address: US CA Los Gatos
- Assignee: Tela Innovations, Inc.
- Current Assignee: Tela Innovations, Inc.
- Current Assignee Address: US CA Los Gatos
- Agency: Martine Penilla Group, LLP
- Main IPC: H01L29/49
- IPC: H01L29/49 ; H01L21/76 ; H01L21/768 ; H01L21/8234 ; H01L23/48 ; H01L21/311

Abstract:
A number of first hard mask portions are formed on a dielectric layer to vertically shadow a respective one of a number of underlying gate structures. A number of second hard mask filaments are formed adjacent to each side surface of each first hard mask portion. A width of each second hard mask filament is set to define an active area contact-to-gate structure spacing. A first passage is etched between facing exposed side surfaces of a given pair of neighboring second hard mask filaments and through a depth of the semiconductor wafer to an active area. A second passage is etched through a given first hard mask portion and through a depth of the semiconductor wafer to a top surface of the underlying gate structure. An electrically conductive material is deposited within both the first and second passages to respectively form an active area contact and a gate contact.
Public/Granted literature
- US20150091190A1 Super-Self-Aligned Contacts and Method for Making the Same Public/Granted day:2015-04-02
Information query
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