Pixel array and fabrication method thereof

A pixel array, comprising:

• a plurality of pixel driving circuits, each having:
• a first switch transistor having first, second and third terminals;
• a scan line coupled to the first terminal of the first switch transistor;
• a data line coupled to the second terminal of the first switch transistor;
• a driving transistor having first, second and third terminals, the first terminal of the driving transistor being coupled to the third terminal of the first switch transistor, the second terminal of the driving transistor being adapted to couple to a first voltage source;
• an electroluminescent device having one end coupled to the third terminal of the driving transistor and another end adapted to couple to a second voltage source;
• a storage capacitor having one end coupled to the first terminal of the driving transistor and another end coupled to a previous scan line;
• and
• a compensation capacitor coupled between the first terminals of the first switch transistor and the driving transistor;
• wherein at least two of the compensation capacitors connected to the same scan line have different capacitances.

A method for fabricating a pixel array with a plurality of pixel driving circuits for an electroluminescent device, comprising:

• forming a switch transistor having first, second and third terminals;
• forming a scan line coupled to the first terminal of the switch transistor;
• forming a data line coupled to the second terminal of the switch transistor;
• forming a driving transistor having first, second and third terminals, the first terminal of the driving transistor coupled to the third terminal of the switch transistor, and the second terminal of the driving transistor coupled to a first voltage source;
• forming an electroluminescent device having one end coupled to the third terminal of the driving transistor and another end adapted to couple to a second voltage source;
• forming a storage capacitor having one end coupled to the first terminal of the driving transistor and another end coupled to the first voltage source;
• and
• forming a compensation capacitor coupled between the first terminals of the switch transistor and the driving transistor, wherein at least two of the compensation capacitors connected to the same scan line have different capacitances.