Patent ID: 7700483
Filing Date: 2010-04-20
Classification: H01L

Abstract:
1. A method for fabricating a pixel structure, comprising: providing a substrate having an active device formed thereon, wherein the active device has a semiconductor layer, a gate dielectric layer, and a gate, the semiconductor layer has a channel region, and a source region and a drain region disposed at two sides of the channel region, and the gate is aligned with the channel region; forming a dielectric layer to cover the active device; forming a patterned photo-resist layer on the dielectric layer, wherein the patterned photo-resist layer has a first photo-resist block and a second photo-resist block adjacent to the first photo-resist block, the second photo-resist block has openings above the source region and the drain region, and a thickness of the first photo-resist block is greater than that of the second photo-resist block; removing a part of the dielectric layer to expose the source region and the drain region by using the patterned photo-resist layer as a mask; reducing the thickness of the patterned photo-resist layer to completely remove the second photo-resist block; forming a second metal layer to cover the first photo-resist block, the dielectric layer, and the active device; removing the first photo-resist block to remove the second metal layer on the first photo-resist block therewith, wherein the second metal layer on the source region and the drain region respectively form a source and a drain; and forming a pixel electrode electrically connected to the drain.