Invention Grant
- Patent Title: Extreme ultraviolet mask blank production system with thin absorber and manufacturing system therefor
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Application No.: US16220351Application Date: 2018-12-14
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Publication No.: US10551732B2Publication Date: 2020-02-04
- Inventor: Vinayak Vishwanath Hassan , Majeed A. 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: G03F1/54
- IPC: G03F1/54 ; G03F1/22 ; G03F1/24

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 multi-layer stack, formed above the ultra-low expansion substrate, for reflecting an extreme ultraviolet (EUV) light, and an absorber layer, formed above the multi-layer stack, for absorbing the EUV light at a wavelength of 13.5 nm includes the absorber layer has a thickness of less than 80 nm and less than 2% reflectivity.
Public/Granted literature
- US20200058213A9 Extreme Ultraviolet Mask Blank Production System With Thin Absorber And Manufacturing System Therefor Public/Granted day:2020-02-20
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