In a fabricating method of a touch screen panel, a conductive layer and an insulating layer are sequentially formed on a same surface of a transparent substrate. The conductive layer and the insulating layer are co-patterned using a halftone mask to form first connection patterns having separated patterns and the insulating layer being patterned on the first connection patterns to expose regions of the first connection patterns. A transparent electrode layer is formed on the transparent substrate having the first connection patterns and the insulating layer. The transparent electrode layer is patterned to form first sensing patterns connected to the first connection patterns through the exposed regions of the first connection patterns and connected along a first direction, and to form second sensing patterns disposed between the first sensing patterns, wherein the second sensing patterns are insulated from the first sensing patterns and connected along a second direction.