Invention Grant
US08592280B2 Fin field effect transistor devices with self-aligned source and drain regions
有权
Fin场效应晶体管器件具有自对准的源极和漏极区域
- Patent Title: Fin field effect transistor devices with self-aligned source and drain regions
- Patent Title (中): Fin场效应晶体管器件具有自对准的源极和漏极区域
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Application No.: US12544939Application Date: 2009-08-20
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Publication No.: US08592280B2Publication Date: 2013-11-26
- Inventor: Josephine B. Chang , Michael A. Guillorn , Wilfried Haensch , Katherine Lynn Saenger
- Applicant: Josephine B. Chang , Michael A. Guillorn , Wilfried Haensch , Katherine Lynn Saenger
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Michael J. Chang, LLC
- Agent Vazken Alexanian
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L21/336

Abstract:
Improved fin field effect transistor (FinFET) devices and methods for the fabrication thereof are provided. In one aspect, a method for fabricating a field effect transistor device comprises the following steps. A substrate is provided having a silicon layer thereon. A fin lithography hardmask is patterned on the silicon layer. A dummy gate structure is placed over a central portion of the fin lithography hardmask. A filler layer is deposited around the dummy gate structure. The dummy gate structure is removed to reveal a trench in the filler layer, centered over the central portion of the fin lithography hardmask, that distinguishes a fin region of the device from source and drain regions of the device. The fin lithography hardmask in the fin region is used to etch a plurality of fins in the silicon layer. The trench is filled with a gate material to form a gate stack over the fins. The filler layer is removed to reveal the source and drain regions of the device, wherein the source and drain regions are intact and self-aligned with the gate stack.
Public/Granted literature
- US20090302372A1 Fin Field Effect Transistor Devices with Self-Aligned Source and Drain Regions Public/Granted day:2009-12-10
Information query
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