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:
Oct. 30, 2012
Filed:
Dec. 30, 2009
Sung Kee Park, Icheon-si, KR;
Sung Kee Park, Icheon-si, KR;
Hynix Semiconductor Inc., Icheon-si, KR;
Abstract
A method of forming patterns of a semiconductor device comprises providing a semiconductor substrate comprising a first region wherein first patterns are to be formed and a second region wherein second patterns are to be formed, each of the second patterns having a wider width than the first patterns, forming an etch target layer over the semiconductor substrate, forming first etch patterns over the etch target layer of the first and second regions, forming second etch patterns on both sidewalls of each of the first etch patterns, wherein the second etch pattern formed in the second region has a wider width than the second etch pattern formed in the first region, removing the first etch patterns, forming third etch patterns over the etch target layer of the second region, the third etch pattern overlapping part of the second pattern, and etching the etch target layer using the third etch patterns and the second etch patterns as an etch mask, to form the first and second patterns.