Patent ID: 7855112
Filing Date: 2010-12-21
Classification: H01L

Abstract:
1. A fabrication method of a pixel structure, comprising: providing a substrate; forming a semiconductor layer and a first conductive layer on the substrate in sequence; patterning the semiconductor layer and the first conductive layer to form a semiconductor pattern and a data line pattern, wherein the semiconductor pattern is composed of the semiconductor layer, and the data line pattern is composed of the semiconductor layer and the first conductive layer; forming a gate insulation layer and a second conductive layer on the substrate in sequence; patterning the gate insulation layer and the second conductive layer to form a gate pattern and a scan line pattern connected, wherein the gate pattern is composed of the gate insulation layer and the second conductive layer, the gate pattern is located on the semiconductor pattern and exposes a portion of the semiconductor pattern, and the exposed portion of the semiconductor pattern is located on two sides of the gate pattern; forming a source region, a drain region, a channel region, and a lightly doped region in the semiconductor pattern, wherein the source region and the drain region are respectively located on two sides of the gate pattern, the channel region is located under the gate pattern, and the lightly doped region is located between the channel region and the source region and between the channel region and the drain region; forming a third conductive layer on the substrate; patterning the third conductive layer to form a source pattern and a drain pattern, wherein the source pattern and the drain pattern are respectively located on two sides of the gate pattern and respectively connected to the source region and the drain region, and the source pattern is further electrically connected to the data line pattern; forming a protective layer on the substrate; patterning the protective layer to form a contact window to expose the drain pattern; and forming a pixel electrode on the protective layer, wherein the pixel electrode is electrically connected to the drain pattern through the contact window.