Invention Grant
- Patent Title: Extreme ultraviolet mask and method of manufacturing the same
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Application No.: US17694341Application Date: 2022-03-14
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Publication No.: US11774844B2Publication Date: 2023-10-03
- Inventor: Chih-Tsung Shih , Tsung-Chih Chien , Shih-Chi Fu , Chi-Hua Fu , Kuotang Cheng , Bo-Tsun Liu , Tsung Chuan Lee
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee Address: TW Hsinchu
- Agency: McDermott Will & Emery LLP
- Main IPC: G03F1/38
- IPC: G03F1/38 ; G03F1/46 ; G03F1/24 ; G03F1/22 ; G03F7/20

Abstract:
An extreme ultraviolet (EUV) mask includes a multilayer Mo/Si stack comprising alternating Mo and Si layers disposed over a first major surface of a mask substrate, a capping layer made of ruthenium (Ru) disposed over the multilayer Mo/Si stack, and an absorber layer on the capping layer. The EUV mask includes a circuit pattern area and a particle attractive area, and the capping layer is exposed at bottoms of patterns in the particle attractive area.
Public/Granted literature
- US20220197127A1 EXTREME ULTRAVIOLET MASK AND METHOD OF MANUFACTURING THE SAME Public/Granted day:2022-06-23
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