Patent ID: 8633491
Filing Date: 2014-01-21
Classification: H01L

Abstract:
1. A manufacturing method for a display device, comprising: (a) forming a semiconductor layer above a substrate; (b) forming a metallic layer on the semiconductor layer; (c) forming, on the metallic layer, an etching resist comprising a first portion and a second portion, the first portion being thicker than the second portion; (d) etching and patterning the semiconductor layer and the metallic layer through the etching resist so as to form a wiring from the metallic layer and leave the semiconductor layer under the wiring; (e) conducting an electrical test on the wiring; (f) thinning the etching resist to remove the second portion while leaving the first portion unremoved; (g) performing selective etching through the first portion, which is left unremoved, so as to leave the semiconductor layer unetched, to thereby pattern the wiring to be divided into a drain electrode and a source electrode; and (h) cutting the substrate, wherein the step (g) of patterning the wiring comprises etching the wiring to be cut at a position closer to a cutting line of the substrate with respect to the drain electrode and the source electrode, while leaving the semiconductor layer unetched.