Patent ID: 7652741

Claim:
An active matrix substrate, comprising: a display area in which first wirings and second wirings which are substantially orthogonal to one another are formed and a switching device is formed in each of pixels surrounded by the first wirings and the second wirings; and a terminal area which is provided outside the display area and includes a plurality of extraction wirings each connected with one of the first wirings and the second wirings, an insulator film formed on the extraction wirings, a first terminal provided on the insulator film, for connecting an extraction wiring with a chip mounted on the terminal area, a second terminal provided on the insulator film, for bringing the extraction wiring into contact with a probe of a prober, a first contact hole provided in the insulator film, for connecting the extraction wiring with the first terminal, and a second contact hole provided in the insulator film, for connecting an extraction wiring with the second terminal, wherein the second terminal has an area larger than the first terminal and an opening area of the second contact hole is smaller than an opening area of the first contact hole.