Patent ID: 7382420
Filing Date: 2008-06-03
Classification: G02F

Abstract:
1. A manufacturing method of a substrate for a liquid crystal display device, comprising: a first step of forming a transparent conductive film and a metal layer on a base substrate; a second step of patterning the metal layer and the transparent conductive film to form a pixel electrode formation region, a gate electrode of a thin film transistor and a gate bus line; a third step of forming an insulating film and a semiconductor layer on an upper layer of the pixel electrode formation region, the gate electrode and the gate bus line; a fourth step of forming resist patterns on the upper layer of the gate electrode and the gate bus line; a fifth step of using the resist patterns to pattern the semiconductor layer and the insulating film, wherein in this step the semiconductor layer on the gate electrode is separated from the semiconductor layer on the gate bus line; a sixth step of removing the metal layer of the pixel electrode formation region by etching; and a seventh step of forming a drain bus line, and a drain electrode and a source electrode of the thin film transistor on the semiconductor layer, wherein the resist patterns are formed on the semiconductor layer which has not been patterned yet; and wherein almost all of the resist patterns remain until a patterning of the semiconductor layer is completed.