Patent ID: 7532270

Claim:
A method for manufacturing a liquid crystal display providing a wide viewing angle in which a display with a wide viewing angle is enabled by placing a common electrode and a pixel electrode on a protecting film of a thin film transistor and by rotating a direction of a molecular axis of a liquid crystal molecule making up of a liquid crystal layer in a hermetically sealed manner on a surface being parallel to a surface of an active matrix substrate, said method comprising the steps of forming a gate electrode metal layer on a transparent insulating substrate and forming a gate electrode by patterning using photolithography; sequentially forming an interlayer insulating film, an a−Si layer (amorphous silicon), an n+ a−Si (high concentration n-type amorphous silicon) layer, and a drain electrode metal layer on said transparent insulating substrate and forming a drain line and an island by performing patterning using photolithography employing a photo resist having a plurality of regions each having a different thickness, removing an unwanted portion of said drain electrode metal layer, and then ashing processing on portions being not exposed and performing reflow processing, and then removing a part of said n + a − Si layer and part of said a−Si layer, and then peeling said photo resist having undergone said reflow processing; forming an insulating film on said transparent insulating substrate and forming an insulating film contact hole which passes through said insulating film and is used to provide a connection to a source electrode of said island at a specified position by patterning using photolithography; and forming a transparent conductive film which becomes a pixel electrode on said transparent insulating substrate and forming said pixel electrode and said common electrode by removing unwanted portions of said transparent conductive film by patterning using photolithography and of connecting said pixel electrode to said source electrode.