Patent ID: 7768590
Filing Date: 2010-08-03
Classification: G02F

Abstract:
1. A method of manufacturing an active matrix substrate having on a substrate, a thin film transistor in which a gate electrode connected to a scanning signal line, and a source electrode connected to a data signal line, and a drain electrode connected to a drain side circuit are formed through a lower insulating film, and a pixel electrode connected to the drain side circuit through a contact hole formed in an upper insulating film, the method comprising the steps of: forming a short-circuit wiring for connecting the data signal line or the source electrode to the drain electrode or the drain side circuit; forming the upper insulating film as an upper layer of the short-circuit wiring; forming an opening for contact hole formation in the upper layer insulating film; forming an opening for short-circuit wiring separation at a region above the short-circuit wiring in the upper insulating film; forming a transparent conductive film on the upper insulating film and inside the openings to form a contact hole; and removing at least the transparent conductive film inside the opening for short-circuit wiring separation and the short-circuit wiring below the opening for short-circuit wiring separation to perform patterning of the pixel electrode and separation of the short-circuit wiring.