Etching compositions and method of etching by using the same
申请人:OCI COMPANY LTD.
公开号:US10640706B2
公开(公告)日:2020-05-05
The present invention relates to an etching composition, an etching method, and a method of preparing a semiconductor device using the same, and more particularly, to an etching composition comprising a compound capable of selectively removing a nitride film with a high selectivity while minimizing an etch rate of the oxide film, and a method of preparing a semiconductor device comprising an etching process using the etching composition.