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:
Apr. 14, 2025
Filed:
Mar. 08, 2022
Applicant:
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Inventors:
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 1/82 (2011.12); G03F 1/22 (2011.12); G03F 1/26 (2011.12); G03F 1/62 (2011.12);
U.S. Cl.
CPC ...
G03F 1/82 (2012.12); G03F 1/22 (2012.12); G03F 1/26 (2012.12); G03F 1/62 (2012.12);
Abstract
Methods for removing haze defects from a photomask or reticle are disclosed. The photomask is placed into a chamber which includes a hydrogen atmosphere. The photomask is then exposed to radiation. The energy from the radiation, together with the hydrogen, causes decomposition of the haze defects. The methods can be practiced on-site and quickly, without the need for wet chemicals or the need to remove the pellicle before cleaning of the photomask. A device for conducting the methods is also disclosed herein.