Patent ID: 6624871
Filing Date: 2003-09-23
Classification: G02F

Abstract:
A method of removing pattern defects in a liquid crystal display, wherein the liquid crystal display comprises:a gate wire on a substrate, the gate wire including a gate electrode and a gate line; a gate insulating layer covering an exposed surface of the substrate, including the gate wire; a data wire on the gate insulating layer, the data wire including a data line, a source electrode, and a drain electrode; an active layer on the gate insulating layer, the active layer constituting a thin film transistor with the gate, source, and drain electrodes; a passivation layer covering an exposed surface of the substrate, except for an exposed portion of the data wire; and a pixel electrode on the passivation layer, the pixel electrode connected to the exposed portion of the data wire, the method comprising: forming an etch-stop layer covering the data wire and the thin film transistor, the etch-stop layer covering a portion of the pixel electrode, and the pixel electrode has a function as an additional etch-stop layer; exposing at least one pattern defect by etching the passivation layer, using the etch-stop layer and pixel electrode as an etch mask, wherein the etch-stop layer and the pixel electrode function together and simultaneously as a composite etch-stop layer; removing the pattern defect; and removing the etch-stop layer; having a feature that a pixel electrode is formed on an upper surface of a passivation layer.