Patent ID: 9449839
Filing Date: 2016-09-20
CPC Classification: H01L

Claim Text:
1. A method of forming a pattern on a semiconductor substrate, comprising: forming one or more layers over the semiconductor substrate; forming a first self-assembled monolayer (SAM) layer over the one or more layers, wherein the first SAM layer exhibits a first SAM pattern; patterning at least a first of the one or more layers using the first SAM layer as a first etch mask to form first pillars in the first of the one or more layers and then removing the first SAM layer; and forming a second self-assembled monolayer (SAM) layer along sidewall portions of the first pillars after the first SAM layer has been removed, wherein the second SAM layer exhibits a second SAM pattern that differs from the first SAM pattern and where the second SAM layer differs in material composition from the first SAM layer.