Invention Grant
US07659171B2 Methods and structure for forming self-aligned borderless contacts for strain engineered logic devices
有权
用于应变工程逻辑器件形成自对准无边界接触的方法和结构
- Patent Title: Methods and structure for forming self-aligned borderless contacts for strain engineered logic devices
- Patent Title (中): 用于应变工程逻辑器件形成自对准无边界接触的方法和结构
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Application No.: US11850172Application Date: 2007-09-05
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Publication No.: US07659171B2Publication Date: 2010-02-09
- Inventor: Toshiharu Furukawa , Steven J Holmes , David V Horak , Charles W. Koburger, III
- Applicant: Toshiharu Furukawa , Steven J Holmes , David V Horak , Charles W. Koburger, III
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Yuanmin Cai
- Main IPC: H01L21/336
- IPC: H01L21/336

Abstract:
A method for forming a borderless contact for a semiconductor FET (Field Effect Transistor) device, the method comprising, forming a gate conductor stack on a substrate, forming spacers on the substrate, such that the spacers and the gate conductor stack partially define a volume above the gate conductor stack, wherein the spacers are sized to define the volume such that a stress liner layer deposited on the gate conductor stack substantially fills the volume, depositing a liner layer on the substrate, the spacers, and the gate conductor stack, depositing a dielectric layer on the liner layer, etching to form a contact hole in the dielectric layer, etching to form the contact hole in the liner layer, such that a portion of a source/drain diffusion area formed in the substrate is exposed and depositing contact metal in the contact hole.
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