Invention Grant
- Patent Title: Planarized extreme ultraviolet lithography blank with absorber and manufacturing system therefor
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Application No.: US15405860Application Date: 2017-01-13
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Publication No.: US10012897B2Publication Date: 2018-07-03
- Inventor: Vinayak Vishwanath Hassan , Majeed Foad , Cara Beasley , Ralf Hofmann
- 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 ; G03F1/38 ; C23C16/06 ; C23C16/44

Abstract:
An extreme ultraviolet (EUV) mask blank production system includes: a substrate handling vacuum chamber for creating a vacuum; a substrate handling platform, in the vacuum, for transporting an ultra-low expansion substrate loaded in the substrate handling vacuum chamber; and multiple sub-chambers, accessed by the substrate handling platform, for forming an EUV mask blank includes: a first sub-chamber for forming a multi-layer stack, above the ultra-low expansion substrate, for reflecting an extreme ultraviolet (EUV) light; and a second sub-chamber for forming a bi-layer absorber, formed above the multi-layer stack, for absorbing the EUV light at a wavelength of 13.5 nm provides a reflectivity of less than 1.9%.
Public/Granted literature
- US20170131627A1 Planarized Extreme Ultraviolet Lithography Blank With Absorber And Manufacturing System Therefor Public/Granted day:2017-05-11
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