Thin film transistor array and fabricating method thereof

A thin film transistor array, comprising:

• a substrate;
• a plurality of scan lines disposed over the substrate;
• a plurality of data lines disposed over the substrate, wherein the substrate is defined into a plurality of pixel areas by the scan lines and the data lines;
• a plurality of thin film transistors driven by the scan lines and the data lines, wherein each thin film transistor is disposed in one of the pixel areas correspondingly;
• a plurality of common lines disposed over the substrate, wherein each common line is located between two adjacent scan lines;
• an etching stop layer disposed over the common lines, wherein the etching stop layer has a plurality of openings;
• and
• a plurality of pixel electrodes, each pixel electrode is disposed in one of the pixel areas and is electrically connected to one of the thin film transistors correspondingly, wherein a portion of each pixel electrode is coupled to one of the scan lines through one of the openings to form a storage capacitor.