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:
Jul. 10, 2018
Filed:
Nov. 18, 2016
Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;
Po-Ju Chen, Hsinchu, TW;
Yi-Wei Chiu, Kaohsiung, TW;
Taiwan Semiconuctor Manufacturing Co., Ltd., Hsinchu, TW;
Abstract
A method for forming a semiconductor device structure is provided. The method includes forming a mandrel masking structure over a target layer. The method also includes patterning the mandrel masking structure to form mandrel lines parallel to each other, and forming spacer structures on sidewalls of the respective mandrel lines to define first openings. Each of the spacer structures includes a first spacer and a second spacer between the first spacer and the corresponding mandrel line. The method also includes removing the mandrel lines to define second openings, and etching the target layer through the first and second openings to form a target pattern therein.