Patent ID: 7781272
Filing Date: 2010-08-24
Classification: G02F,H01L

Abstract:
1. A method for manufacturing a pixel structure of a liquid crystal display (LCD), the LCD comprising a substrate, on which a plurality of pixel areas and pad areas are defined, each of the pixel areas comprising a control area and a capacitance area, the method comprising the steps of: (a) forming a thin-film transistor (TFT) structure having a gate electrode, a source electrode and a drain electrode on the control area and a capacitance structure having a conductive portion on the capacitance area, wherein the source electrode, the drain electrode and the conductive portion are made of a patterned poly-silicon layer; (b) forming an intermediate dielectric layer overlaying the TFT structure, the capacitance structure, and a pad structure formed on the pad area; (c) forming a transparent electrode layer overlaying the intermediate dielectric layer; (d) removing some portions of the transparent electrode layer and the intermediate dielectric layer for partially exposing the source electrode, the drain electrode, the conductive portion and the pad structure; (e) forming a patterned metallic layer including first, second and third metallic structures, wherein the first metallic structure electrically connects with the source electrode, the second metallic structure electrically connects with the drain electrode, the transparent electrode and the conductive portion, and the third metallic structure electrically connects with the pad structure; and (f) forming a patterned passivation layer overlaying the patterned metallic layer, and partially exposing the transparent electrode layer on the capacitance area.