The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2023
Filed:
Jul. 12, 2021
Applicant:
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Inventors:
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03F 1/64 (2012.01); G03F 7/20 (2006.01); G03F 7/00 (2006.01);
U.S. Cl.
CPC ...
G03F 1/64 (2013.01); G03F 7/70025 (2013.01); G03F 7/70916 (2013.01); G03F 7/70983 (2013.01);
Abstract
A method for removing particles includes receiving a pellicle including a pellicle membrane, a pellicle frame and at least a particle disposed on the pellicle membrane, generating light beams to form an optical trap extending in a direction perpendicular to the pellicle membrane, and removing the particle from the pellicle membrane by the optical trap.