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:
Dec. 03, 2019
Filed:
May. 05, 2017
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Inventors:
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/677 (2006.01); H01L 21/683 (2006.01); G01L 9/00 (2006.01);
U.S. Cl.
CPC ...
H01L 21/6838 (2013.01); G01L 9/0025 (2013.01);
Abstract
A transportation stage for transporting a photomask is provided. The transportation stage includes a vacuum source and a supporting plate. The supporting plate has a number of passages connected to the vacuum source. The transportation stage further includes a membrane positioned on the supporting plate. A number of through holes are formed on a middle region of the membrane and communicating with the passages. The transportation stage also includes an acoustic wave transducer positioned on the membrane and is configured generate an acoustic wave along the membrane.