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:
Feb. 08, 2022
Filed:
Oct. 17, 2019
Applicant:
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Inventors:
Tsiao-Chen Wu, Hsinchu County, TW;
Pei-Cheng Hsu, Taipei, TW;
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 1/24 (2012.01); G03F 1/80 (2012.01); G03F 1/40 (2012.01);
U.S. Cl.
CPC ...
G03F 1/24 (2013.01); G03F 1/40 (2013.01); G03F 1/80 (2013.01);
Abstract
A reflective mask includes a substrate, a light absorbing layer over the substrate, a reflective layer over the light absorbing layer, and an absorption pattern over the reflective layer. The reflective layer covers a first portion of the light absorbing layer, and a second portion of the light absorbing layer is free from coverage by the reflective layer.