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:
May. 30, 2017
Filed:
Aug. 27, 2015
SK Hynix Inc., Gyeonggi-do, KR;
Keun Do Ban, Gyeonggi-do, KR;
Hong Ik Kim, Gyeonggi-do, KR;
Jung Gun Heo, Daejeon, KR;
Cheol Kyu Bok, Seoul, KR;
SK Hynix Inc., Gyeonggi-do, KR;
Abstract
A method of forming patterns includes forming an array of pillars on an underlying layer stacked on an etch target layer, forming a separation wall layer on the pillars to provide separation walls covering sidewalls of the pillars, forming a block copolymer layer on the separation wall layer, annealing the block copolymer layer to form first domains located between the pillars, and a second domain surrounding and isolating the first domains, selectively removing the first domains to form second openings, selectively removing the pillars to form fourth openings, forming fifth openings that extend from the second and fourth openings to penetrate the underlying layer, forming a sealing pattern that covers and seals dummy openings among the fifth openings, and forming seventh openings that extend from the fifth openings exposed by the sealing pattern to penetrate the etch target layer.