Patent ID: 8414783
Filing Date: 2013-04-09
Classification: G06F

Abstract:
1. A method of forming double-sided patterns in a touch panel circuit, comprising: providing a substrate with a first conductive layer and a second conductive layer respectively formed on the top side and bottom side of the substrate; forming a blocking layer on a top surface of the first conductive layer for blocking ultraviolet (UV) light: forming a first photoresist layer on a top surface of the blocking layer, and a second photoresist layer on a bottom surface of the second conductive layer; exposing the first photoresist layer and the second photoresist layer to ultraviolet lights respectively, wherein the ultraviolet lights from either side of the substrate are blocked from each other by the blocking layer; developing the both sides of the substrate such that regions of the first conductive layer and the second conductive layer are exposed to be etched; and etching the exposed regions of the first conductive layer and the second conductive layer at the same time, thereby resulting in a first conductive film in the first conductive layer, and resulting in a second conductive film in the second conductive layer.