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. 12, 2016
Filed:
Jul. 03, 2014
Applied Materials, Inc., Santa Clara, CA (US);
Jeong Hyun Yoo, Gyeonggi-do, KR;
Hoon Sang Lee, Byoungjeom Dong, KR;
Byungkook Kong, San Ramon, CA (US);
APPLIED MATERIALS, INC., Santa Clara, CA (US);
Abstract
Methods for removing residual polymers formed during etching of a boron-doped amorphous carbon layer are provided herein. In some embodiments, a method of etching a feature in a substrate includes: exposing a boron doped amorphous carbon layer disposed on the substrate to a first plasma through a patterned mask layer to etch a feature into the boron doped amorphous carbon layer, wherein the first plasma is formed from a first process gas that reacts with the boron doped amorphous carbon layer to form residual polymers proximate a bottom of the feature; and exposing the residual polymers to a second plasma through the patterned mask layer to etch the residual polymers proximate the bottom of the feature, wherein the second plasma is formed from a second process gas comprising nitrogen (N), oxygen (O), hydrogen (H), and methane (CH).