Invention Grant
- Patent Title: Multi-threshold voltage (Vt) workfunction metal by selective atomic layer deposition (ALD)
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Application No.: US14627861Application Date: 2015-02-20
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Publication No.: US10109534B2Publication Date: 2018-10-23
- Inventor: Adam Brand , Naomi Yoshida , Seshadri Ganguli , David Thompson , Mei Chang
- Applicant: APPLIED MATERIALS, INC.
- Applicant Address: US CA Santa Clara
- Assignee: APPLIED MATERIALS, INC.
- Current Assignee: APPLIED MATERIALS, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Moser Taboada
- Agent Alan Taboada
- Main IPC: H01L21/3205
- IPC: H01L21/3205 ; H01L21/8238 ; H01L29/66 ; H01L29/78

Abstract:
Methods for forming a multi-threshold voltage device on a substrate are provided herein. In some embodiments, the method of forming a multi-threshold voltage device may include (a) providing a substrate having a first layer disposed thereon, wherein the substrate comprises a first feature and a second feature disposed within the first layer; (b) depositing a blocking layer atop the substrate; (c) selectively removing a portion of the blocking layer from atop the substrate to expose the first feature; (d) selectively depositing a first work function layer atop the first feature; (e) removing a remainder of the blocking layer to expose the second feature; and (f) depositing a second work function layer atop the first work function layer and the second feature.
Public/Granted literature
- US20150262828A1 MULTI-THRESHOLD VOLTAGE (Vt) WORKFUNCTION METAL BY SELECTIVE ATOMIC LAYER DEPOSITION (ALD) Public/Granted day:2015-09-17
Information query
IPC分类: