Patent ID: 8243218
Filing Date: 2012-08-14
Classification: G02F

Abstract:
1. A method for manufacturing a liquid crystal display device comprising: forming a metal having a low resistance from one of Al, Cr, Cu, Mo, and Al alloy on a first substrate having first and second regions by a sputtering method; forming a gate line, a gate electrode, a neighboring gate line, and a storage capacitor electrode spaced apart from the gate electrode on the first substrate by patterning the metal, wherein the storage capacitor electrode is a portion of the neighboring gate line; forming a first insulating layer on the entire surface of the first substrate including the gate electrode and the storage capacitor electrode; depositing a photoresist material on the first insulating layer; removing the photoresist material above the storage capacitor electrode by exposure and developing processes to expose the first insulating layer on the storage capacitor electrode; etching the first insulating layer using the patterned photoresist material as a mask so that the first insulating layer is formed on an entire surface of the first substrate except an upper portion of the storage capacitor electrode; and forming a second insulator layer on the entire surface of the first substrate including the first insulator layer; forming a semiconductor layer, an ohmic contact layer, and source and drain electrodes on the second insulating layer in the second region; forming a conductive layer of the same material as the source and drain electrodes on the second insulating layer in the first region, wherein the conductive layer overlaps the storage capacitor electrode except both side portions of the storage capacitor electrode; forming a passivation layer on the entire surface of the first substrate including the conductive layer and the source and drain electrodes; forming contact holes to expose the drain electrode and the conductive layer by a photo-etching process; and forming a pixel electrode electrically connected to the drain electrode and the conductive layer through the contact hole, wherein the storage capacitor is formed by the conductive layer connected to the pixel electrode and the storage capacitor electrode that is a portion of the neighboring gate line, wherein only the second insulating layer is disposed between the conductive layer and the storage capacitor electrode, and wherein a width of the conductive layer disposed between the pixel electrode and the second insulating layer is longer than a width of the pixel electrode inside the contact hole to expose the conductive layer, and is shorter than a width of the storage capacitor electrode that is a portion of the neighboring gate line.