Patent ID: 9711750
Date: 2017-07-18
CPC Classifications: H01L

Claim:
1. A method of forming a conductive pattern comprising: forming a conductive material layer for forming the conductive pattern on a substrate; forming a photosensitive organic material layer on the conductive material layer; irradiating the photosensitive organic material layer through a halftone mask including a first mask region having a boundary corresponding to an edge of the conductive pattern, a second mask region, and a third mask region disposed between the first mask region and the second mask region; forming a first pattern including a first region corresponding to the first mask region and having a first thickness and a second region corresponding to the third mask region and having a second thickness smaller than the first thickness by removing the photosensitive organic material layer; etching the conductive material layer using the first pattern as a hard mask and forming the conductive pattern arranged below the first pattern and having exposed lateral surfaces; and forming a second pattern that covers the lateral surfaces of the conductive pattern by reflowing the first pattern.