Patent 7821287 was granted and assigned to AU Optronics on October, 2010 by the United States Patent and Trademark Office.
The system for display test includes a driving circuit having integrated circuit (IC) pads on the substrate and the IC pads are electrically connected to the signal lines, respectively. And the first switches are between the first test pads and the IC pads, wherein the number of the first test pads is less than the number of the IC pads.