Patent ID: 9086632
Filing Date: 2015-07-21
Classification: B32B,G03F,Y10T

Abstract:
1. A method of fabricating a fine pattern structure, the method comprising: forming a pattern formation layer and a lower hard mask layer on a substrate having a first region and a second region; forming a first pattern including first upper hard mask pattern and a first guide pattern on the lower hard mask layer in the first region to expose portions of the lower hard mask layer; forming a second pattern including a second upper hard mask pattern and a second guide pattern; forming neutralization patterns on the exposed portions of the lower hard mask layer in the first region; forming a block co-polymer layer on the first guide patterns and the neutralization patterns in the first region and on the second guide pattern in the second region, the block co-polymer layer including first polymer blocks and second polymer blocks; removing the second polymer blocks to expose portions of the neutralization patterns; etching the neutralization patterns using the first polymer blocks as etch masks to expose portions of the lower hard mask layer in the first region without removing the second upper hard mask pattern on the lower hard mask layer in the second region; and removing the exposed portions of the lower hard mask layer to form first lower hard mask patterns exposing portions of the pattern formation layer in the first region.