Invention Grant
US08962224B2 Methods for controlling defects for extreme ultraviolet lithography (EUVL) photomask substrate
有权
用于控制极紫外光刻(EUVL)光掩模基板的缺陷的方法
- Patent Title: Methods for controlling defects for extreme ultraviolet lithography (EUVL) photomask substrate
- Patent Title (中): 用于控制极紫外光刻(EUVL)光掩模基板的缺陷的方法
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Application No.: US13774010Application Date: 2013-02-22
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Publication No.: US08962224B2Publication Date: 2015-02-24
- Inventor: Banqiu Wu , Ajay Kumar , Omkaram Nalamasu
- Applicant: Banqiu Wu , Ajay Kumar , Omkaram Nalamasu
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Patterson & Sheridan, LLP
- Main IPC: G03F1/00
- IPC: G03F1/00

Abstract:
Methods for providing a silicon layer on a photomask substrate surface with minimum defeats for fabricating film stack thereon for EUVL applications are provided. In one embodiment, a method for forming a silicon layer on a photomask substrate includes performing an oxidation process to form a silicon oxide layer on a surface of a first substrate wherein the first substrate comprises a crystalline silicon material, performing an ion implantation process to define a cleavage plane in the first substrate, and bonding the silicon oxide layer to a surface of a second substrate, wherein the second substrate is a quartz photomask.
Public/Granted literature
- US20140045103A1 METHODS FOR CONTROLLING DEFECTS FOR EXTREME ULTRAVIOLET LITHOGRAPHY (EUVL) PHOTOMASK SUBSTRATE Public/Granted day:2014-02-13
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