Patent ID: 6599786
Filing Date: 2003-07-29
Classification: H01L

Abstract:
A method of fabricating an array substrate for an active matrix type liquid crystal display device, the method comprising:a) forming a plurality of gate lines and gate electrodes by depositing a first metallic material on a substrate and then patterning the first metallic material using a first mask; b) forming a first insulating layer on the substrate, having gate lines, and gate electrodes formed in step a; c) forming a plurality of data lines, source electrodes, drain electrodes, and capacitor electrodes by depositing a semiconductor layer, an ohmic contact layer and a second metallic material sequentially on the first insulating layer, and then patterning the second metallic material and the ohmic contact layer in a single step using a second mask; d) forming a passivation layer having a plurality of first and second contact holes by depositing a second insulating layer on the data lines, the source electrodes, the drain electrodes and the capacitor electrodes, and then patterning the second insulating layer using a third mask, wherein, the first contact holes expose a portion of the drain electrode, and wherein, the second contact holes expose a portion of the capacitor electrodes; and e) forming a plurality of pixel electrodes by depositing a transparent conductive layer on the passivation layer, and then patterning the transparent conductive layer using a fourth mask, wherein, the pixel electrodes contact the drain electrodes through the first contact holes and contact the capacitor electrodes through the second contact holes.