Patent ID: 8853066

Claim:
A method for manufacturing a pixel structure, comprising: forming a first patterned conductor layer on a substrate, wherein the first patterned conductor layer comprises a gate, a scan line connected to the gate and a first conductor pattern; forming a gate insulating layer on the substrate to cover the first patterned conductor layer; sequentially forming a metal oxide material layer and an etching stop material layer on the gate insulating layer; using the first patterned conductor layer as a photomask to form a patterned photoresist layer on the etching stop material layer through a back exposure process; using the patterned photoresist layer as a mask to remove a part of the metal oxide material layer and a part of the etching stop material layer, so as to form a metal oxide channel layer and an etching stop layer above the gate, and form a metal oxide pattern and an etching stop pattern above the scan line and the first conductor pattern; forming a second patterned conductor layer on the substrate, wherein the second patterned conductor layer comprises a source, a drain and a data line connected to the source, and the source and the drain are located at two sides on the etching stop layer located above the gate; forming a passivation layer on the substrate to cover the second patterned conductor layer; using a halftone mask to form a photosensitive layer having a first opening on the passivation layer, wherein a thickness of the photosensitive layer located above the gate is greater than a thickness of the photosensitive layer located above the drain and the scan line, and the first opening exposes the passivation layer located above the first conductor pattern; using the photosensitive layer as a mask to remove a part of the passivation layer, the etching stop pattern and the metal oxide pattern to form a first contact opening, a second contact opening and a third contact opening in the passivation layer, wherein the first contact opening exposes the first conductor pattern, the second contact opening exposes the drain, and the third contact opening exposes the gate insulating layer on the scan line; removing the photosensitive layer; and forming a patterned transparent conductive layer on the passivation layer, wherein the patterned transparent conductive layer comprises a pixel electrode, and the pixel electrode is electrically connected to the drain through the second contact opening.