A method of fabricating an electronic device includes the following steps: a) providing a substrate; b) forming a first strip on the substrate; c) coating an insulation layer on the first strip and the substrate while completely overlaying the first strip and the substrate with the same; d) forming a second strip on the insulation layer; e) forming conductive polymer on the insulation layer while completely overlaying the second strip with the same; f) etching the conductive polymer via plasma etching for completely removing the conductive polymer on the second strip; and g) forming a semiconductor layer on the second strip and the conductive polymer.