Invention Grant
- Patent Title: Ultra-smooth layer ultraviolet lithography mirrors and blanks, and manufacturing and lithography systems therefor
- Patent Title (中): 超光滑层紫外光刻镜和坯料,以及其制造和光刻系统
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Application No.: US14139507Application Date: 2013-12-23
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Publication No.: US09417515B2Publication Date: 2016-08-16
- Inventor: Soumendra N. Barman , Cara Beasley , Abhijit Basu Mallick , Ralf Hofmann , Nitin K. Ingle
- 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: Servilla Whitney LLC
- Main IPC: G03F1/24
- IPC: G03F1/24 ; G03F1/22 ; G03F7/20 ; G21K1/06 ; G03F7/16

Abstract:
An extreme ultraviolet mirror or blank production system includes: a first deposition system for depositing a planarization layer over a semiconductor substrate; a second deposition system for depositing an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; and a third deposition system for depositing a multi-layer stack over the ultra-smooth layer. The extreme ultraviolet blank includes: a substrate; a planarization layer over the substrate; an ultra-smooth layer over the planarization layer, the ultra-smooth layer having reorganized molecules; a multi-layer stack; and capping layers over the multi-layer stack. An extreme ultraviolet lithography system includes: an extreme ultraviolet light source; a mirror for directing light from the extreme ultraviolet light source; a reticle stage for placing an extreme ultraviolet mask blank with a planarization layer and an ultra-smooth layer over the planarization layer; and a wafer stage for placing a wafer.
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