A method of forming a touch screen panel including first sensing electrodes in an active region of a substrate and arranged along a first direction and second sensing electrodes arranged along a second direction intersecting the first direction, the method including forming the first sensing electrodes and first connection patterns, the first connection patterns connecting the first sensing electrodes along the first direction; forming an insulating pattern capping the first sensing electrodes and the first connection patterns so that the first sensing electrodes and the first connection patterns are not exposed; and forming the second sensing electrodes between the first sensing electrodes, and second connection patterns on the insulating pattern, the second connection patterns connecting the second sensing electrodes along the second direction.